Jurnal Nasional Teknologi Komputer

SISTEM PENGELOLAAN KEUANGAN BERBASIS WEB UNTUK OPTIMALISASI FOODCOURT BESTIE DRINK

2025-05-03T10:15:47+07:00

Foodcourt Bestie Drink merupakan salah satu usaha kuliner yang masih mengandalkan pencatatan keuangan secara manual melalui kertas atau kwitansi pembayaran. Sistem manual tersebut rentan terhadap kesalahan pencatatan, kehilangan data, dan kesulitan dalam melakukan rekapitulasi transaksi harian maupun bulanan. Untuk mengatasi permasalahan tersebut, penelitian ini bertujuan merancang dan membangun sistem informasi pengelolaan keuangan berbasis web yang dapat membantu dalam proses pencatatan penjualan, pengeluaran, serta penyajian laporan keuangan secara real-time. Metode pengembangan sistem yang digunakan adalah waterfall, dimulai dari tahap analisis kebutuhan, perancangan sistem, implementasi, hingga pengujian. Sistem dikembangkan menggunakan bahasa pemrograman PHP dengan basis data MySQL, dan diuji menggunakan metode black box untuk memastikan semua fungsi berjalan sesuai dengan yang diharapkan. Hasil dari penelitian ini menunjukkan bahwa sistem yang dikembangkan dapat mengurangi kesalahan pencatatan, mempercepat proses rekap data keuangan, serta memberikan kemudahan akses bagi pemilik usaha dalam memantau kondisi keuangan usahanya secara digital dan efisien.

DEVELOPMENT APLICATION Pengembangan Aplikasi Sembol sebagai Solusi Distribusi Sembako Berbasis Teknologi Digital

2025-06-02T14:45:02+07:00

Distribusi sembako (sembilan bahan pokok) secara efisien dan merata menjadi tantangan besar di tengah kebutuhan masyarakat perkotaan yang terus meningkat. Perkembangan teknologi digital menawarkan solusi inovatif untuk mengatasi masalah tersebut, salah satunya melalui aplikasi berbasis e-commerce. Penelitian ini bertujuan untuk merancang, mengembangkan, dan mengimplementasikan aplikasi Sembol sebagai platform distribusi sembako yang terintegrasi. Aplikasi ini dirancang untuk memberikan akses yang lebih mudah, cepat, dan aman bagi konsumen, serta menawarkan mekanisme distribusi yang efisien bagi pemasok dan pengecer sembako. Metodologi yang digunakan meliputi analisis kebutuhan pengguna, desain antarmuka yang mudah digunakan, dan pengujian sistem untuk memastikan stabilitas dan kinerja aplikasi. Studi kasus dilakukan di daerah perkotaan dengan populasi yang tinggi untuk mengukur dampak implementasi Sembol terhadap efektivitas distribusi sembako. Hasil penelitian menunjukkan bahwa aplikasi Sembol mampu meningkatkan efisiensi distribusi hingga 35% dibandingkan dengan metode konvensional, mengurangi biaya logistik, dan meningkatkan kepuasan pengguna. Kesimpulannya, inovasi teknologi melalui aplikasi Sembol berpotensi menjadi solusi berkelanjutan dalam rantai pasok sembako di era digital, sekaligus mendukung peningkatan aksesibilitas sembako bagi masyarakat luas

Minat Siswa Kelas 1 SMA dalam Ekstrakurikuler Futsal Dengan Metode Unified Theory of Acceptance and Use of Technology (UTAUT)

2025-07-03T10:08:59+07:00

Penelitian ini bertujuan untuk menganalisis minat siswa kelas 1 SMA Swasta Al Maksum yang terletak di Desa Cinta Rakyat dalam mengikuti kegiatan ekstrakurikuler futsal, dengan pendekatan Unified Theory of Acceptance and Use of Technology (UTAUT). UTAUT merupakan sebuah model teoritis yang dikembangkan untuk menjelaskan niat dan perilaku pengguna dalam menerima serta menggunakan teknologi. Dalam konteks penelitian ini, model UTAUT digunakan untuk melihat bagaimana faktor-faktor seperti performance expectancy (harapan terhadap kinerja), effort expectancy (kemudahan penggunaan), social influence (pengaruh sosial), dan facilitating conditions (kondisi pendukung) berkontribusi terhadap minat siswa dalam mengikuti ekstrakurikuler futsal. Penelitian ini menggunakan pendekatan kuantitatif dengan metode survei. Data dikumpulkan melalui penyebaran kuesioner kepada 64 siswa kelas 1, terdiri dari 32 siswa laki-laki dan 32 siswa perempuan. Analisis data dilakukan dengan regresi linier berganda untuk menguji sejauh mana pengaruh masing-masing variabel dalam model UTAUT terhadap minat siswa. Hasil penelitian menunjukkan bahwa performance expectancy dan social influence memiliki pengaruh yang signifikan dan positif terhadap minat siswa dalam mengikuti ekstrakurikuler futsal. Sebaliknya, effort expectancy dan facilitating conditions menunjukkan pengaruh yang tidak terlalu dominan. Temuan ini menunjukkan bahwa persepsi terhadap manfaat kegiatan futsal dan dorongan dari lingkungan sosial, seperti teman sebaya dan guru, menjadi faktor utama dalam meningkatkan minat siswa. Penelitian ini memberikan kontribusi bagi pihak sekolah dalam menyusun strategi pengembangan ekstrakurikuler yang lebih efektif, menarik, dan sesuai dengan kebutuhan siswa, khususnya dalam mendorong partisipasi aktif pada kegiatan futsal.

Penerapan Framework Codeigniter Pada Sistem Reservasi Wedding Decoration Menggunakan Pendekatan Model UML

2025-07-21T18:49:36+07:00

Perkembangan teknologi informasi telah membuka peluang bagi layanan penyewaan tenda dan dekorasi pernikahan untuk bertransformasi menuju sistem digital. Di Erina Tenda Jepara, salah satu tantangan utama yang dihadapi adalah kurangnya efisiensi dalam proses pengiriman gambar dekorasi dan harga paket yang masih bergantung pada cara manual, yang menghambat kelancaran dalam pemesanan. Untuk mengatasi permasalahan ini, penelitian ini bertujuan untuk merancang dan membangun sistem reservasi wedding decoration menggunakan pendekatan model UML dengan penerapan framework Codeigniter serta Bootstrap untuk antarmuka pengguna, dan MySQL untuk pengelolaan basis data. Metode pengembangan yang digunakan adalah Waterfall, yang mencakup tahapan analisis, desain, implementasi, pengujian, dan pemeliharaan. Harapannya, sistem yang dikembangkan dapat mempermudah pelanggan dalam mengakses gambar dekorasi dan harga paket secara langsung, serta meningkatkan efisiensi pengelolaan data pemesanan bagi pihak manajemen. Dengan demikian, proses pemesanan dapat berlangsung dengan lebih cepat, terorganisir, dan efisien.

PERANCANGAN WEBSITE PEMINJAMAN DAN PENGEMBALIAN BUKU PADA PERPUSTAKAAN DI SMK NEGERI 1 BINJAI

2025-07-23T12:59:33+07:00

Perpustakaan memiliki peran strategis dalam mendukung proses pembelajaran di era digital, khususnya dalam menyediakan
akses informasi dan memperluas wawasan siswa. Namun, pengelolaan perpustakaan di SMK Negeri 1 Binjai masih dilakukan
secara manual menggunakan kartu peminjaman dan pencatatan melalui Microsoft Excel, sehingga kurang efisien dan
menyulitkan dalam proses sirkulasi buku dan pembuatan laporan. Penelitian ini bertujuan untuk merancang dan membangun
website sistem informasi peminjaman dan pengembalian buku pada perpustakaan SMK Negeri 1 Binjai guna meningkatkan
efisiensi pengelolaan data dan pelayanan kepada pengguna. Metode yang digunakan dalam pengembangan sistem ini mengacu
pada studi pustaka serta analisis kebutuhan fungsional dan non-fungsional perpustakaan. Sistem yang dirancang berbasis web,
dilengkapi dengan fitur katalog buku, manajemen anggota, serta proses peminjaman dan pengembalian secara online. Hasil
perancangan ini diharapkan dapat meningkatkan efektivitas pengelolaan sumber daya informasi, mempercepat proses
pelayanan, serta mendorong peningkatan minat baca siswa. Dengan penerapan teknologi informasi yang tepat, perpustakaan
sekolah dapat menjadi sarana pembelajaran yang lebih modern, efisien, dan responsif terhadap kebutuhan pengguna.

APLIKASI PELAYANAN PUSKESMAS DI BINJAI SELATAN DENGAN FITUR METODE SERVICE QUALITY BERBASIS WEB

2025-06-20T10:19:35+07:00

Puskesmas sebagai fasilitas kesehatan tingkat pertama memiliki peran strategis dalam memberikan layanan kepada
masyarakat. Namun, di Puskesmas Binjai Selatan masih terdapat kendala seperti keterbatasan informasi layanan, antrean
pendaftaran yang panjang, serta kurangnya media untuk menyampaikan kritik dan saran. Penelitian ini bertujuan untuk
merancang dan mengembangkan aplikasi pelayanan Puskesmas berbasis web dengan penerapan metode Service Quality guna
mengukur dan meningkatkan kualitas layanan secara menyeluruh. Aplikasi ini dibangun menggunakan bahasa pemrograman
web, basis data MySQL, dan dirancang menggunakan pemodelan Unified Modeling Language (UML). Sistem dirancang
dengan dua aktor utama, yaitu administrator dan masyarakat, yang memungkinkan pengelolaan data pelayanan, akses
informasi, pendaftaran daring, serta evaluasi terhadap kualitas layanan. Melalui pendekatan ini, aplikasi diharapkan dapat
meningkatkan efektivitas pelayanan, mempercepat proses administrasi, dan meningkatkan kepuasan masyarakat terhadap
layanan Puskesmas.

Rancang Bangun Web Profil Pada Prodi Filsafat Universitas Pembangun Pancabudi

2025-07-18T15:27:03+07:00

The use of information technology in the world of education is very important to increase the effectiveness of academic services and the promotion of study programs. This research aims to design and build a website-based information system in the Philosophy Study Program, Panca Budi Development University. The method used is software development with an object-oriented analysis and design (OOAD) approach, starting from needs analysis, design, and implementation to system testing. The results of the study show that the developed website is able to provide profile information, news, activities, galleries, and contacts online, making it easier to access information for students, lecturers, prospective students, and the general public. This website also functions as an effective digital promotional medium and supports the digitization of academic services in the study program environment. System testing shows a high level of user satisfaction with the ease of access and completeness of information.

Perancangan Sistem Penjualan Baju Pada Toko Asia Fashion Berbasis Website

2025-07-28T14:17:51+07:00

Perkembangan teknologi informasi telah mendorong berbagai sektor usaha untuk beralih ke sistem berbasis digital, termasuk dalam kegiatan penjualan, Toko Asia Fashion yang bergerak di bidang penjualan baju sebelumnya masih menggunakan sistem manual dalam proses transaksi dan kurang efisien. Penelitian ini bertujuan untuk merancang sistem penjualan baju berbasis website yang dapat membantu mempercepat dan mempermudah proses transaksi, pengelolaan data produk, serta pelaporan penjualan, Metode pengembangan sistem yang digunakan adalah model waterfall yang terdiri dari tahapan analisis, desain, implementasi, dan pengujian. Sistem dibangun menggunakan Bahasa pemrograman PHP dan basis data MySQL. Hasil penelitian menunjukan bahwa sistem yang dirancang mampu memberikan kemudahan bagi pelanggan dalam melakukan pemesanan produk secara online, serta mempermudah admin toko dalam mengelola stok barang, trasanksi, dan laporan penjualan.

Perbandingan Metode Teorema Bayes dan Dempster Shafer Menentukan Status Gunung Berapi

2025-07-31T21:29:51+07:00

Penelitian ini membahas perbandingan dua metode dalam sistem pakar yang digunakan untuk menganalisis status aktivitas gunung berapi. Gunung berapi merupakan struktur geologis yang terbentuk akibat pergerakan magma dari dalam bumi ke permukaan melalui erupsi, yang biasanya disertai pelepasan lava, gas, dan material vulkanik lainnya. Sistem pakar dalam konteks ini bertujuan mentransformasikan pengetahuan seorang ahli ke dalam bentuk algoritma komputasional yang mampu melakukan diagnosis secara otomatis. Dua metode yang dianalisis dalam penelitian ini adalah Teorema Bayes dan Dempster Shafer. Tujuan utama dari studi ini adalah mengevaluasi efektivitas kedua metode dalam menentukan status gunung berapi dan mengidentifikasi metode yang paling akurat untuk diimplementasikan dalam aplikasi sistem pakar. Hasil analisis menunjukkan bahwa metode Dempster Shafer memiliki tingkat akurasi sebesar 98%, lebih tinggi dibandingkan dengan metode Teorema Bayes dalam konteks data gejala yang diuji. Temuan ini menunjukkan bahwa Dempster Shafer lebih unggul dalam klasifikasi status gunung berapi pada kasus ini, serta memberikan kontribusi terhadap pengembangan sistem pakar yang andal dalam mendukung pengambilan keputusan di bidang geologi dan mitigasi bencana alam

Pembuatan Robot EA MART Sebagai Expert Advisor Dalam Pasar Forex Menggunakan MQL4

2025-06-04T11:30:03+07:00

EA MART adalah salah satu Expert Advisor yang menggunakan strategi Martingale yang melakukan perdagangan secara otomatis di dalam pasar Forex, dengan bantuan broker. Expert Advisor ini dibuat dengan alasan banyaknya keluhan rugi karena money management yang kurang baik atau terlambat entry market karena kurang-nya waktu meng-analis pasar ataupun chart. “Pembuatan EA MART menggunakan MQL4 ”. Broker yang digunakan adalah OctaFX MT4 sebagai platform Trading nya. EA ini meliputi kegiatan jual beli mata uang di forex dengan satuan mata uang yang di gunakan adalah US DOLAR di berbagai currency yang sudah di sediakan Broker-nya. Metode yang digunakan pada penelitian ini adalah Rapid Application Development (RAD) yang dimulai dengan perancangan kebutuhan, kemudian tahap desain sistem, tahap pengembangan dan yang terakhir implementasi yaitu pengujian EA. EA MART telah di uji melalui Broker OctaFX MT4. Pengujian dilakukan dengan back test dengan hasil memuaskan yaitu rasio profit 60% dan loss rasio 40%, tergantung penggunaan lots dan MaxTrade.

Pengaruh Penggunaan Inverter terhadap Pompa Sirkulasi di PT. Unilever Oleochemical Indonesia

2025-06-04T15:11:53+07:00

Pompa sirkulasi mengalirkan cairan pendingin di dalam sistem pendingin secara terus-menerus untuk menyerap panas dari peralatan-peralatan yang membutuhkan pendinginan pada proses produksi di dove plant. Pengendali kecepatan putar pompa sirkulasi tersebut menggunakan inverter. Metode penelitian yang digunakan adalah metode kuantitatif. Penelitian ini bertujuan untuk menganalisa pengaruh penggunaan inverter terhadap pompa sirkulasi serta melakukan perbandingan pemakaian daya listrik pompa sirkulasi menggunakan inverter dan tanpa inverter. Hasil penelitian menunjukkan jumlah kecepatan putar motor berbanding lurus dengan frekuensi dan daya listrik motor. Perbandingan rata-rata dalam 1 hari pemakaian daya listrik pompa sirkulasi menggunakan inverter sebesar 6,56 kW sedangkan pemakaian daya listrik pompa sirkulasi tanpa inverter sebesar 10,98 kW. Penghematan pemakaian daya listrik yang didapat pompa sirkulasi menggunakan inverter sebesar 4,42 kW per hari. Pemakaian daya listrik pompa sirkulasi yang menggunakan inverter jauh lebih hemat dibandingkan pompa sirkulasi tanpa inverter dikarenakan penggunaan inverter dapat mengatur kecepatan putar motor yang mengakibatkan tegangan keluaran dan arus motor tidak selalu dalam kondisi maksimal dan konstan, sehingga pemakaian daya listrik jauh lebih rendah.

PENERAPAN METODE SOCIAL COMMERCE BERBASIS WEBSITE PADA SISTEM PENJUALAN GALERI KOPERASI DAN UMKM WUBI (WANITA UNGGUL BINJAI)

2025-05-08T15:01:23+07:00

Dengan menggunakan metode social commerce berbasis web, penelitian ini bertujuan untuk mengatasi kendala pemasaran digital yang dihadapi oleh Koperasi WUBI (Wanita Unggul Binjai) dan UMKM. Semua aspek transaksi digital dimungkinkan oleh platform yang dikembangkan, mulai dari memilih produk, mengisi formulir pesanan, memilih metode pengiriman, hingga pembayaran dan verifikasi administrasi bukti transfer. Analisis kebutuhan, desain antarmuka, implementasi fitur, pengujian, dan pemeliharaan adalah langkah-langkah dalam pengembangan sistem menggunakan pendekatan Waterfall. Untuk meningkatkan interaksi dan jangkauan pengguna, situs web terintegrasi dengan media sosial Instagram. Hasil implementasi menunjukkan bahwa sistem ini telah berhasil meningkatkan efisiensi transaksi, menyederhanakan manajemen pesanan, serta meningkatkan daya saing pasar dan digital koperasi dan UMKM. Oleh karena itu, penelitian ini membantu usaha kecil dan menengah di kawasan ini mempercepat transformasi digital.

Rancangan Sistem Informasi Pengolahan Event Kampus Berbasis Web Menggunakan Metode Waterfall

2025-07-04T10:54:56+07:00

Perkembangan teknologi informasi yang pesat menuntut adanya sistem digital yang efisien dan terintegrasi dalam berbagai sektor, termasuk di lingkungan kampus. Laporan ini membahas perancangan dan implementasi Sistem Informasi Pengelolaan Event Kampus berbasis web yang bertujuan untuk menggantikan proses manual dalam manajemen event seperti seminar, pelatihan, dan kegiatan organisasi kemahasiswaan. Sistem ini dirancang dengan metode Waterfall yang mencakup tahapan analisis kebutuhan, perancangan, implementasi, pengujian, dan dokumentasi. Fitur utama yang disediakan antara lain manajemen event, pendaftaran peserta, pencatatan kehadiran, laporan kegiatan, dan dokumentasi galeri. Dengan penerapan sistem ini, proses pengelolaan event menjadi lebih cepat, efisien, dan terdokumentasi secara baik, sekaligus meningkatkan transparansi dan profesionalisme penyelenggara. Sistem dikembangkan menggunakan teknologi open-source seperti HTML, CSS, PHP, JavaScript, dan MySQL. Hasil implementasi menunjukkan bahwa sistem mampu memenuhi kebutuhan pengguna dan mendukung kegiatan event internal kampus secara optimal.

Analisis Sentimen terhadap Kurikulum Merdeka di MTS Al Ishlah Medan Menggunakan Algoritma Naïve Bayes

2025-05-19T19:21:30+07:00

Kurikulum Merdeka merupakan salah satu inovasi pendidikan terbaru di Indonesia yang bertujuan meningkatkan kebebasan belajar peserta didik dan otonomi guru dalam menyusun pembelajaran. Namun, implementasinya menimbulkan beragam tanggapan dari para pelaku pendidikan. Penelitian ini bertujuan untuk menganalisis sentimen siswa dan guru terhadap penerapan Kurikulum Merdeka di MTS Al Ishlah Medan. Dengan menggunakan algoritma Naïve Bayes, data komentar diklasifikasikan menjadi sentimen positif dan negatif. Data diperoleh melalui kuesioner, wawancara, dan observasi, kemudian diolah menggunakan teknik preprocessing teks seperti tokenisasi, normalisasi, stopword removal, TF-IDF, dan pelabelan menggunakan kamus InSetLexicon. Hasil analisis terhadap 60 komentar menunjukkan bahwa 75% memiliki sentimen positif dan 25% negatif. Evaluasi model menunjukkan nilai akurasi sebesar 83% atau 0.83, precision dan recall masing-masing serta F1-score 91% atau 0.91 untuk kelas negatif. Temuan ini menunjukkan bahwa mayoritas responden merespon Kurikulum Merdeka secara positif. Penelitian ini memberikan masukan yang berguna bagi institusi pendidikan dan pembuat kebijakan dalam mengevaluasi efektivitas kurikulum baru ini.

A SISTEM PENDATAAN PELANGGARAN SISWA PADA KANTOR BIMBINGAN KONSELING DI MADRASAH TSANAWIYAH AL WASHLIYAH MEDAN KRIO BERBASIS WEBSITE

2025-06-02T14:28:15+07:00

Pencatatan data pelanggaran siswa yang dilakukan secara manual sering kali menyebabkan kesulitan dalam pencarian data, monitoring, dan proses evaluasi oleh pihak Bimbingan Konseling. Oleh karena itu, penelitian ini bertujuan untuk merancang dan membangun Sistem Pendataan Pelanggaran Siswa berbasis website di Kantor Bimbingan Konseling Madrasah Tsanawiyah Al Washliyah Medan Krio. Penelitian ini menggunakan metode pengembangan sistem Waterfall yang terdiri dari lima tahapan utama: analisis kebutuhan, perancangan sistem, implementasi, pengujian, dan pemeliharaan. Sistem ini dirancang agar mempermudah guru BK dalam mencatat, mengakses, serta menindaklanjuti data pelanggaran siswa secara digital, cepat, dan akurat. Proses perancangan mencakup pembuatan antarmuka pengguna yang intuitif dan struktur basis data yang efisien untuk mendukung pengelolaan informasi. Hasil pengujian menunjukkan bahwa sistem mampu berjalan dengan baik sesuai kebutuhan fungsional dan non-fungsional yang telah ditentukan. Sistem juga memberikan manfaat nyata dalam meningkatkan efisiensi kerja dan ketepatan dalam pendataan pelanggaran siswa. Dengan adanya sistem ini, proses pendataan dan evaluasi di lingkungan Bimbingan Konseling menjadi lebih profesional dan terorganisir secara digital. Penelitian ini diharapkan dapat menjadi solusi teknologi informasi yang dapat diterapkan pada lembaga pendidikan lainnya untuk mendukung pengelolaan data secara optimal.

Rancang Bangun Aplikasi Pembelajaran yang di Personalisasikan Berdasarkan Mata Kuliah Studi Kasus Program Studi Sistem Komputer UNPAB

2025-07-29T00:13:53+07:00

Teknologi digital telah mendorong perubahan signifikan dalam dunia pendidikan tinggi, termasuk dalam strategi pengajaran pada berbagai mata kuliah. Salah satu pendekatan inovatif yang muncul adalah Personalized Learning System (PLS), yaitu sistem pembelajaran yang dirancang untuk menyesuaikan materi, metode, dan kecepatan belajar berdasarkan karakteristik individual mahasiswa. Penelitian ini bertujuan untuk merancang sebuah sistem pembelajaran personal khusus untuk mata kuliah Jaringan Komputer, serta menganalisis potensi dan tantangan implementasi Personalized Learning Systems di lingkungan perguruan tinggi. Penelitian ini diharapkan dapat mendukung transformasi digital pendidikan tinggi yang lebih inklusif, adaptif, dan berorientasi pada kebutuhan individu mahasiswa serta menjadi bahan evalusi terhadap sistem pembelajaran personal yang ada. Hasil penelitian menunjukkan bahwa penerapan aplikasi pembelajaran pada mata kuliah Jaringan Komputer yang menggunakan metode Personalized Learning System memberikan dampak positif terhadap motivasi belajar dan performa akademik mahasiswa. Aplikasi ini merekomendasikan integrasi Personalized Learning System ke dalam kurikulum berbasis teknologi untuk mendukung pembelajaran yang lebih adaptif, efektif, dan berkelanjutan di tingkat perguruan tinggi.

Perancangan Sistem Informasi Serah Terima Barang Masuk dan Keluar di BPBD Kota Medan Berbasis Web

2025-06-08T14:28:39+07:00

Penelitian ini bertujuan untuk merancang dan membangun sistem informasi serah terima barang masuk dan keluar berbasis web pada Badan Penanggulangan Bencana Daerah (BPBD) Kota Medan. Sistem ini dikembangkan sebagai solusi terhadap proses manual yang selama ini digunakan, yang sering menimbulkan ketidakteraturan, keterlambatan, dan kesalahan dalam pencatatan. Metode pengumpulan data dilakukan melalui observasi, wawancara, dan studi pustaka. Hasil dari penelitian ini adalah sistem informasi yang dapat mencatat aktivitas serah terima barang secara digital, dengan fitur pengelolaan data barang, pencatatan transaksi masuk dan keluar, serta pelaporan. Implementasi sistem ini menunjukkan peningkatan efisiensi dan akurasi dalam pengelolaan barang, sekaligus mendukung transparansi dan akuntabilitas. Dengan demikian, sistem ini diharapkan dapat menunjang kinerja BPBD Kota Medan dalam penanganan logistik kebencanaan secara lebih efektif.

Rancang Bangun Sistem Kendali Monitoring Suhu Mesin Heat Press Berbasis Arduino Uno dan Sensor LM35 pada Mansyur Jersey

2025-05-27T11:32:55+07:00

Penelitian ini bertujuan untuk merancang dan membangun sistem kendali dan monitoring suhu pada mesin heat press berbasis Arduino Uno, menggunakan sensor LM35 sebagai pendeteksi suhu, LCD I2C sebagai tampilan informasi, serta LED indikator dan buzzer sebagai penanda status mesin. Sistem ini dirancang agar operator tidak perlu terus-menerus memantau layar utama mesin, sehingga dapat meningkatkan efisiensi kerja. LED merah menyala saat suhu masih dalam tahap pemanasan (<150°C), sedangkan LED hijau dan buzzer aktif berfungsi sebagai indikator kesiapan ketika suhu telah mencapai 150°C. Hasil pengujian menunjukkan bahwa sistem ini mampu memberikan informasi suhu secara real-time dan akurat. Namun, ditemukan kendala berupa fluktuasi pembacaan suhu yang menyebabkan tampilan pada LCD berubah-ubah secara cepat. Untuk mengatasi hal ini, dilakukan perbaikan sistem dengan menerapkan tegangan referensi internal 1.1V pada Arduino, serta menambahkan filter rata-rata pembacaan sensor agar suhu yang ditampilkan lebih stabil. Dengan adanya sistem ini, operator dapat lebih efisien dalam bekerja tanpa harus terus-menerus memeriksa suhu secara manual. Penerapan sistem ini diharapkan dapat meningkatkan akurasi pemantauan suhu, mengurangi kesalahan dalam proses penyablonan, serta mendukung kelancaran produksi di PT. Mansyur Jersey.

Sentimen Analisis Pada Ulasan Aplikasi Indodana di Google Play Store Menggunakan Algoritma Logistic Regression, Naive Bayes dan Support Vector Machine

2025-05-31T22:32:33+07:00

Penelitian ini bertujuan mengevaluasi sentimen pengguna berdasarkan ulasan aplikasi Indodana di Play Store, menggunakan algoritma Logistic Regression, Naive Bayes, dan Support Vector Machine (SVM). Tujuan utama studi ini adalah mengidentifikasi dan mengklasifikasikan ulasan sentimen positif atau negatif, serta mengevaluasi efektivitas sentimen analisis pada produk Paylater dan Pinjaman Online (Pinjol) untuk melihat potensi ketertarikan pengguna terhadap layanan yang ditawarkan. Selain itu, penelitian ini bertujuan untuk membandingkan keakuratan dan performa masing-masing algoritma, guna menentukan algoritma yang paling efektif dalam menganalisis sentimen. Setelah menerapkan algoritma Logistic Regression menghasilkan akurasi 92,01%, presisi 92,12%, recall 91,87%, dan f1-score 91,96%. Sementara itu, algoritma Naive Bayes, diperoleh hasil dengan hasil akurasi 80,91% , presisi 80,69%, recall 80,36% , dan f1-score 80,54%.Di sisi lain, algoritma SVM mencatatkan nilai akurasi 92,63%, presisi 92,17%, recall 91,98%, dan f1-score 92,06%. Pernyataan ini menunjukkan bahwa dalam penelitian ini, algoritma SVM memiliki performa yang lebih baik dibandingkan Logistic Regression, dan Naive Bayes. Diharapkan hasil penelitian ini dapat memberikan pemahaman yang lebih mendalam dan berguna untuk pengembangan aplikasi Indodana serta aplikasi-aplikasi serupa, dengan membantu perusahaan memahami umpan balik pengguna secara lebih mendetail. Dengan demikian, penelitian ini dapat berkontribusi pada perumusan strategi pemasaran yang lebih tepat sasaran serta peningkatan kualitas produk dan layanan yang lebih baik. Penelitian ini juga diharapkan dapat menjadi referensi untuk penelitian selanjutnya di bidang sentimen analisis pada Paylater dan Pinjaman Online, sehingga dapat memberikan nilai tambah bagi perusahaan-perusahaan yang bergerak di sektor keuangan digital.

Cluster Pelanggan Listrik PLN UP3 Binjai Dengan Metode K-Means

2025-07-07T14:33:56+07:00

PLN UP3 Binjai faces challenges in understanding customer characteristics in each rayon so the service strategy is not fully effective. This study aims to group electricity user areas based on customer type and installed power so that PLN can develop a more targeted and efficient service strategy. The method used in this study is clustering with the K-Means algorithm, with customer data for 2024 from 9 rayons analyzed using the MATLAB R2014b application. Grouping is done with 3, 4 and 5 clusters. The results of grouping 3 clusters produce a variance value of 1.0890, in grouping 4 clusters it produces a variance value of 0.8047 and in grouping 5 clusters it produces a variance value of 0.6093. The results of the Grouping that has been carried out show that 5 clusters provide the most optimal results with the smallest variance value of 0.6093 which shows that the distribution of data between clusters is more homogeneous and representative. Each cluster shows a different combination pattern of rayon, installed power and customer type, which can be used as a basis for developing a more effective service strategy.

Keywords: Electricity Customers, Electricity Power, K-Means Clustering.

Perancangan Ui/Ux Aplikasi Penjualan Makanan Berbasis Mobile Pada Umkm Angkringan Berkah Menggunakan Metode Design Thinking

2025-05-09T16:11:54+07:00

Perkembangan teknologi digital telah membawa perubahan besar dalam berbagai sektor, termasuk industri kuliner dan UMKM. UMKM Angkringan Berkah menghadapi tantangan dalam meningkatkan efisiensi operasional dan daya saingnya melalui penerapan teknologi berbasis mobile. Penelitian ini bertujuan untuk merancang UI/UX aplikasi penjualan makanan berbasis mobile dengan pendekatan Design Thinking guna meningkatkan pengalaman pengguna dan efektivitas transaksi digital. Metode Design Thinking diterapkan melalui tahapan empati, definisi masalah, ideasi, pembuatan prototipe, dan pengujian. Hasil penelitian menunjukkan bahwa desain UI/UX yang dikembangkan berhasil meningkatkan kemudahan penggunaan aplikasi, mempercepat proses pemesanan, dan memberikan pengalaman pengguna yang lebih baik. Pengujian usability menunjukkan tingkat kepuasan yang tinggi dari pengguna dalam navigasi dan interaksi dengan aplikasi. Perbandingan dengan penelitian sebelumnya mengonfirmasi efektivitas metode Design Thinking dalam menciptakan desain yang lebih intuitif dan ramah pengguna. Meskipun terdapat beberapa keterbatasan dalam fitur tambahan, penelitian ini memberikan kontribusi penting dalam digitalisasi UMKM kuliner. Hasil penelitian ini dapat menjadi acuan bagi pengembang aplikasi serupa dalam meningkatkan aspek usability dan fungsionalitas di masa depan.

Perancangan Ui/Ux Website Promosi Dan Penjualan Di Maripro Photo Studio Dengan Menggunakan Metode Human Centered Desain

2025-05-09T16:33:28+07:00

Perkembangan ilmu pengetahuan dan teknologi telah mendorong setiap sektor untuk memanfaatkan informasi secara cepat, tepat, dan akurat. Dalam industri jasa kreatif, pemanfaatan teknologi informasi seperti website menjadi strategi penting untuk meningkatkan promosi dan penjualan. Maripro Photo Studio, sebagai pelaku usaha fotografi lokal di Medan, masih terbatas dalam pemasaran digital karena hanya mengandalkan WhatsApp dan Instagram. Penelitian ini bertujuan untuk merancang antarmuka pengguna (UI) dan pengalaman pengguna (UX) website promosi dan penjualan berbasis pendekatan Human Centered Design (HCD). Metode ini terdiri dari lima tahapan, yaitu observasi, definisi, ideasi, prototipe, dan pengujian, yang difokuskan pada kebutuhan dan kenyamanan pengguna akhir. Data dikumpulkan melalui observasi langsung, wawancara dengan pihak studio, serta studi literatur terkait desain UI/UX dan digital marketing. Hasil dari proses perancangan menunjukkan bahwa website yang dibangun memiliki tampilan menarik, navigasi yang mudah, dan mampu menyampaikan informasi secara efektif. Evaluasi melalui usability testing terhadap pengguna menunjukkan skor rata-rata yang tinggi pada aspek kemudahan penggunaan, estetika, aksesibilitas, dan kepuasan pengguna. Kesimpulannya, website ini dapat menjadi solusi digital yang meningkatkan jangkauan pemasaran dan kualitas layanan Maripro Photo Studio. Selain itu, hasil penelitian ini juga dapat dijadikan acuan dalam pengembangan sistem serupa pada sektor industri kreatif lainnya.

ANALISIS PENINGKATAN KEANDALAN SISTEM JARINGAN DISTRIBUSI 20 KV MENGGUNAKAN METODE IDENTIFIKASI TITIK PANAS DI UNIT LAYANAN PELANGGAN (ULP ) WOHA

2025-05-16T10:14:47+07:00

PT. PLN (Persero) merupakan perusahaan dengan sistem jaringan distribusi yang cukup luas dan selalu bertambah jumlah jaringan distribusinya. Perusahaan ini tergolong sangat baik dalam meningkatkan mutu pelayanan kepada pelanggannya. Khususnya kebutuhan pelanggan dalam bentuk energi listrik di area wilayah Nusa Tenggara Barat. Dengan jaringan sistem distribusi yang ada, analisis keandalan dapat diketahui dari bagaimana kualitas sistem distribusi terhadap gangguan yang terjadi. Untuk meningkatkan kualitas pendistribusian energi listrik, maka kinerja sistem jaringan distribusi menjadi hal pokok yang akan selalu dijaga dalam menyalurkan listrik ke pelanggan. Dalam peningkatan kualitas penyaluran sistem distribusi yaitu perhitungan indeks kehandalan berdasarkan frekuensi gangguan rata-rata (SAIFI) dan lama gangguan rata-rata (SAIDI) sebagai acuan dalam kehandalan jaringan distribusi.

ANALISIS PEREMAJAAN KWH METER PRABAYAR TERHADAP KEANDALAN SISTEM TENAGA LISTRIK

2025-05-18T20:36:17+07:00

Measuring and Limiting Devices (APP) or kWh meters have a very significant role in securing PT.PLN (Persero) income. kWh Meter acts as a transaction point between PT.PLN (Persero) as a producer and customers as consumers, therefore the accuracy of the kWh Meter in measuring energy consumption used by customers plays an important role as company income, because from all PT.PLN (Persero) business processes from generation, transmission, to distribution, only energy measured in the customer's kWh Meter will be the electricity bill that must be paid by the customer as a consumer to PT.PLN (Persero) as a producer. To obtain real measurement results with good quality, consistent preparation and evaluation are needed in its implementation, if not implemented properly it will result in losses for the company in the form of losses caused by the kWh Meter being jammed or damaged and still installed at the customer's transaction point. Therefore, APP must be managed properly and correctly by competent and highly dedicated officers. APP maintenance is carried out with the aim of avoiding measurement discrepancies by APP which ultimately cause excess or shortage of bills.

PERBANDINGAN KINERJA PEMBANGKIT LISTRIK TENAGA ANGIN DAN TENAGA SURYA DI KAWASAN PESISIR

2025-05-18T20:50:23+07:00

The increasing global energy demand demands the development of sustainable renewable energy sources. Indonesia has great potential in utilizing solar and wind energy, especially in coastal areas. This study compares the performance of Solar Power Plants (PLTS) and Wind Power Plants (PLTA) based on energy efficiency, stability of electricity supply, costs, and environmental impacts. The research method used is a quantitative approach with direct measurements of solar radiation intensity and wind speed. The results show that PLTA has a higher efficiency (35%) than PLTS (18%), but its electrical power is more volatile. PLTS is more stable and has lower investment and maintenance costs than PLTA. In terms of the environment, PLTA has the potential to cause disturbances, while PLTS poses challenges in managing solar panel waste. By considering all aspects, the combination of PLTS and PLTA in a hybrid system is the optimal solution to increase the efficiency and confidentiality of electricity supply in coastal areas

INTEGRASI MADRASAH DIGITAL UNTUK PRESENSI DAN DAFTAR NILAI PADA MTSS YP AL AZHAR

2025-05-20T15:55:23+07:00

The development of information and communication technology (ICT) has penetrated various aspects of life, including the world of education. The integration of digital madrasah in the attendance system and grade management at MTsS YP Al Azhar. The research method used is a qualitative approach with a case study, involving observation, interviews, and literature study as data collection techniques. The results showed that the implementation of the digital system has improved the efficiency of the attendance process and management of student grades, facilitated access to information for teachers and parents, and reduced the use of paper. However, there are obstacles such as limited training for educators and technology infrastructure that has not been optimized. The conclusion of this study is that the integration of digital technology at MTsS YP Al Azhar has a positive impact on education management, although further efforts are needed in increasing the capacity of human resources and providing supporting infrastructure.

ANALISIS PENGGUNAAN MOTOR INDUKSI PADA SISTEM KONVEYOR INDUSTRI

2025-05-26T10:28:06+07:00

In the modern industrial world, conveyor systems are important components that support the efficiency and sustainability of the production process. The use of induction motors as conveyor drives has become the main choice because of its durability, energy efficiency, and relatively low operational costs. This study aims to analyze the performance of induction motors, especially three-phase induction motors, in belt conveyor systems in industrial environments. The method used is a quantitative descriptive approach by analyzing technical parameters such as motor power, efficiency, power factor, torque, and operational and maintenance data. The results of the study show that a three-phase induction motor with a power of 1.5 kW provides more stable and efficient performance than a single-phase motor of 0.75 kW, both in terms of energy consumption, torque efficiency, and operational efficiency. The efficiency of the three-phase motor is recorded at 88% with energy consumption of ±85 kWh per month in a work cycle of ±200 hours. With a maximum torque of 6.0 Nm, the motor is able to overcome inertia loads optimally. It is concluded that the selection of three-phase induction motors that are in accordance with the needs of the conveyor system can improve energy efficiency and extend the operational life of industrial equipment.

Perancangan Aplikasi Database Sistem Pengelolahan Arsip Digital Berbasis Web Mobile Menggunakan Algoritma Levensthein (Studi Kasus : SMA PLUS TARUNA AKTERLIS MEDAN)

2025-06-02T10:50:05+07:00

Archive management that is still done manually at SMA Plus Taruna Akterlis Medan often causes difficulties in searching and archiving documents efficiently. Therefore, this study aims to design and build a web-based mobile digital archive management system using the Levenshtein Algorithm to improve document search efficiency. This system was developed using the PHP programming language and MySQL database, and implementing object-based system analysis modeling, such as Use Case Diagrams, Class Diagrams, and Activity Diagrams. The Levenshtein Algorithm is used in this system to improve the accuracy of document searches based on the similarity of keywords entered by the user, thus facilitating the archive search process. The prototype system developed allows users to manage archive data digitally, including recording incoming and outgoing letters. The implementation of this system is expected to increase the effectiveness and efficiency of archive management in the school environment.

Analisis Dampak Harmonisa terhadap Efisiensi Energi pada Pengoperasian Inverter Air Conditioner

2025-06-02T14:11:50+07:00

This research analyzes harmonic characteristics and their impact on energy efficiency in inverter air conditioner operation, as well as evaluates the effectiveness of harmonic mitigation methods. Using a MATLAB/Simulink-based simulation approach, the inverter AC system was modeled under various load levels and operating conditions. Results show that Total Harmonic Distortion (THD) of current is inversely proportional to load level, with the highest THD (30.3%) occurring at 25% load and the lowest (4.5%) at 100% load. Dominant harmonics were identified at orders 3, 5, and 7, contributing significantly to power losses. At low loads, harmonic distortion causes efficiency reduction of up to 10% and decreases the Coefficient of Performance (COP) by approximately 12%. Implementation of passive filters consisting of single-tuned filters for 5th order (250 Hz), 7th order (350 Hz) harmonics, and a high-pass filter for higher-order harmonics (>550 Hz) effectively reduces current THD by 70-80% and harmonic losses by up to 90%, significantly improving system efficiency and COP. The greatest efficiency improvement occurs at low loads, with COP increasing from 9.2 to 10.2 at 25% load. This research provides a foundation for developing power quality standards and more effective harmonic mitigation strategies to enhance energy efficiency in inverter AC systems.

ANALISA IMPLEMENTASI SISTEM PENGADUAN LAYANAN PELANGGAN INIDHOME PADA WITEL MEDAN

2025-06-02T15:35:03+07:00

This study discusses the implementation of QR Code service as a customer complaint system on Indihome, a flagship product of PT Telkom Indonesia. This service aims to simplify the process for customers to report internet issues without needing to contact the call center or visit the office. By scanning the QR Code, customers can easily fill out a complaint form that is directly linked to repair technicians. The results show that the QR Code service enhances efficiency and responsiveness in handling customer complaints, as well as providing convenience for users who no longer face the burden of call charges. However, challenges remain for long-term customers who are less familiar with this technology. This study also highlights the importance of effective socialization to both staff and customers to ensure the service is fully utilized in the future.

Pengembangan Aplikasi Sembol sebagai Solusi Distribusi Sembako Berbasis Teknologi Digital

2025-06-02T16:17:12+07:00

Distribution of basic necessities (nine basic commodities) efficiently and evenly is a major challenge amidst the increasing needs of urban communities. The development of digital technology offers innovative solutions to overcome this problem, one of which is through e-commerce-based applications. This study aims to design, develop, and implement the Sembol application as an integrated basic necessities distribution platform. This application is designed to provide easier, faster, and safer access for consumers, as well as offer an efficient distribution mechanism for basic necessities suppliers and retailers. The methodology used includes user needs analysis, user-friendly interface design, and system testing to ensure application stability and performance. Case studies were conducted in urban areas with high populations to measure the impact of Sembol implementation on the effectiveness of basic necessities distribution. The results of the study showed that the Sembol application was able to increase distribution efficiency by up to 35% compared to conventional methods, reduce logistics costs, and increase user satisfaction. In conclusion, technological innovation through the Sembol application has the potential to be a sustainable solution in the basic necessities supply chain in the digital era, while also supporting increased accessibility of basic necessities for the wider community.

ANALISIS MINOR INSPECTION PLTGU UNIT 1 PT. PLN NUSANTARA POWER UP BELAWAN TERHADAP PENINGKATAN NILAI EKONOMIS

2025-06-03T11:13:00+07:00

This study aims to analyze the impact of minor inspection implementation on increasing the economic value of PLTGU Unit 1 PT. PLN Nusantara Power UP Belawan, in this case PLTGU Unit 1 is the name of the GT 1.1 generator, the limitations of this study are directed at the performance parameters of the generator such as, specific gas consumption (SGC), heat rate, thermal efficiency, and net power output, to determine the impact of minor inspection implementation on increasing economic value. The results of the study showed that after minor inspection, there was a decrease in the specific gas consumption (SGC) value from 0.0120 mmBTU/kWh to 0.0119 mmBTU/kWh, a decrease in the heat rate value from 3,043.85 kCal/kWh to 3,027.76 kCal/kWh, an increase in thermal efficiency from 28.25% to 28.40%, in terms of electrical energy production, there was an increase in net power output from the previous 94,310 kWh to 94,390 kWh, this indicates an increase in net power output which contributes to increasing the availability of electricity supply to the system. Thus, minor inspection has been proven to provide a real contribution to increasing the economic value of the power plant, and is recommended to be carried out routinely according to the maintenance schedule.

Desain dan Pengembangan Aplikasi Penjualan Berbasis Website di Float Smoothies Shop Medan

2025-06-03T15:00:06+07:00

The development of information technology drives digitalization in various sectors, including the culinary business. Medan Float Smoothies Store still uses a conventional sales system, which causes various obstacles in order recording, stock management, and financial reporting. Therefore, this study aims to design and develop a website-based sales system to improve operational efficiency. The research method used is Research and Development (R&D) with the Software Development Life Cycle (SDLC) Waterfall model approach. The results of the study show that the implementation of a PHP and MySQL-based system has succeeded in replacing manual processes, increasing transaction accuracy, and expanding market reach through online ordering features. With this system, customers can easily view products, make transactions, and get stock information in real time. The benefits of this study are increasing business efficiency, reducing transaction errors, and providing a more practical shopping experience for customers.

Perancangan UI/UX Aplikasi Mobile Penjualan Kue dan Roti Menggunakan Metode Design Thinking (Studi Kasus: UMKM Ghonim Kue)

2025-06-10T10:17:18+07:00

MSMEs are the backbone of the national economy, but many have yet to adapt to digital technology. MSMEs “Ghonim Kue” face challenges in reaching a wide range of customers because they still rely on conventional sales systems. This research aims to design the user interface (UI) and user experience (UX) of Ghonim Kue mobile application using the Design Thinking method. With several processes in it, among others, empathize, define, ideate, prototype, and testing are processes in implementing the design thinking method. The creation of this application uses Figma software as a mobile display designer and is tested using the System Usability Scale (SUS). The test results of 26 users showed a SUS score of 66.15 which is included in the “Adjective scale Good and Accepbility Marginal High” category. This design is expected to be a digital solution that can increase the competitiveness of Ghonim Kue MSMEs in the era of digital transformation.

RANCANGAN BANGUN APLIKASI PEMBELAJARAN ONLINE (E-LEARNING) Di SMK TRITECH INFORMATIKA MEDAN BERBASIS WEB DENGAN METODE WATERFALL

2025-06-10T10:27:02+07:00

The rapid development of information technology has encouraged educational institutions to adopt digital-based learning systems to enhance the effectiveness of the teaching and learning process. This study aims to design and develop a web-based online learning (e-learning) application at SMK Tritech Informatika Medan using the Waterfall software development method. The application is designed to facilitate teachers and students in conducting online learning activities, such as uploading materials, submitting assignments, participating in discussions, and evaluating learning outcomes. The Waterfall method was chosen because it provides a structured and systematic approach to system development, consisting of the following phases: requirements analysis, system design, implementation, testing, and maintenance. Each phase is carried out sequentially to ensure the system’s accuracy and stability. Testing was conducted to evaluate system functionality based on user needs, including login features, user data management, uploading materials and assignments, as well as interaction through comments. The result of this study is a web-based e-learning application that can be accessed via the internet by teachers, students, and administrators. The developed system was proven to function properly during testing, with all features working as intended. This application effectively and efficiently supports the learning process and is expected to serve as an alternative solution in supporting education digitalization at SMK Tritech Informatika Medan.

PERANCANGAN SISTEM E-LEARNING KURSUS ONLINE BERBASIS WEB MENGGUNAKAN LARAVEL

2025-06-11T15:34:23+07:00

The advancement of information technology has significantly impacted the field of education, particularly in the implementation of online learning (e-learning). This study aims to design and develop a web-based e-learning system for online courses using the Laravel framework. The system is designed to facilitate interactive learning between instructors and course participants, featuring user management (admin, teacher, student), course management, learning materials, payment transactions, and student progress tracking. The system development methodology follows the SDLC (System Development Life Cycle) approach, which includes requirements analysis, system design, implementation, and testing stages. Laravel was chosen as the framework because it supports structured, secure, and efficient web application development. The result of this research is a responsive and user-friendly e-learning system that effectively supports distance learning. This system is expected to serve as an alternative solution for providing an online course learning platform that is flexible and accessible anytime and anywhere.

Desain UI/UX pada Website PT.Serasi Media Teknologi Menggunakan Metode Design Thinking

2025-06-12T09:16:41+07:00

The purpose of this study is to apply the Design Thinking methodology to evaluate the UI/UX design on the mobile website platform of PT Serasi Media Teknologi. Effective UI/UX design can improve user experience and maximize the use of online platforms. The Design Thinking method is used to understand user needs and develop innovative solutions. It is expected that the results of this study will contribute to the development of a more effective and user-friendly mobile-based website platform. This study uses a qualitative approach by conducting observations and interviews to understand user needs. The findings of the study indicate that effective UI/UX design can improve user satisfaction and maximize the use of online platforms. This study offers recommendations for improving the UI/UX design for the mobile-based website platform of PT Serasi Media Teknologi.

Implementasi Convolutional Neural Network (CNN) untuk Klasifikasi Jenis Jerawat Berbasis Web Menggunakan Streamlit

2025-06-14T12:08:53+07:00

Acne vulgaris is one of the most common skin problems, particularly on the facial area, and it negatively affects the quality of life of sufferers both physically and mentally. The prevalence of acne continues to rise globally and nationally, especially among adolescents and young adults. This study aims to classify types of acne using the Convolutional Neural Network (CNN) method and to implement the results into an interactive web-based application using Streamlit, in order to facilitate users in independently detecting acne.The dataset used consists of 360 acne images collected from Google and Kaggle, which were categorized into four acne types: whiteheads, blackheads, pustules, and nodules before being split into training and testing datasets. This study employs three CNN architectures: InceptionV3, VGG16, and EfficientNetB0. Training was carried out in two stages with a learning rate of 0.0001 during the initial phase and 0.000005 during the fine-tuning phase, across a total of 50 epochs. The models were trained using the Adam optimizer, along with callbacks such as EarlyStopping, ModelCheckpoint, and ReduceLROnPlateau to prevent overfitting and enhance training efficiency.Model performance was evaluated using a confusion matrix. The evaluation results showed that the VGG16 architecture achieved the highest accuracy at 97%, followed by InceptionV3 with 96%, while EfficientNetB0 only reached 26% accuracy. The best-performing model was then integrated into a Streamlit-based application featuring a simple interface that allows users to upload facial images, detect acne types, and receive initial treatment recommendations.

Penerapan Secure Coding Sebagai Cyber Security Based Pada PT. Industri Karet Deli

2025-06-16T17:21:54+07:00

Cyber security is a crucial aspect in maintaining the integrity, confidentiality, and availability of a company's information systems. PT. Industri Karet Deli, as one of the national manufacturing companies that has implemented digital systems in its operations, faces significant challenges in terms of potential cyber threats. This study aims to apply secure coding principles as the basis for strengthening cyber security systems. The methods used include identifying security vulnerabilities in the company's internal applications, evaluating the source code, and implementing secure coding practices in accordance with OWASP (Open Web Application Security Project) standards. The research results show that the systematic implementation of secure coding can reduce system vulnerabilities by up to 60% compared to before implementation. These findings emphasize the importance of integrating security from the early stages of software development to create systems that are resilient to cyber attacks. Recommendations from this study include regular training for development teams and the adoption of code review policies as part of the continuous system development process.

Perencanaan Penerangan Jalan Umum (PJU) Menggunakan Energi Baru dan Terbarukan di Desa Tanjung Gusta, Dusun III, Kecamatan Sunggal

2025-06-18T09:45:22+07:00

Indonesia has great potential in renewable energy, especially solar energy, due to its geographical location in the tropics. This study aims to plan an efficient and sustainable Street Lighting (PJU) system in Tanjung Gusta Village, Sunggal District, by utilizing new and renewable energy (EBT). Tanjung Gusta Village has a need for adequate street lighting to improve safety, mobility, and quality of life for the community. The research method includes a field survey to analyze conditions, calculation of lighting needs based on applicable standards, and design of a PJU system using EBT. The results of the study indicate that a PJU system with solar power is the most suitable solution for Tanjung Gusta Village, considering the availability of resources. The planning of this solar PJU system includes selecting the type of lamp to be used, determining the capacity of solar panels and batteries, and calculating the optimal layout and height of lamp posts.

RANCANGAN DAN IMPLEMENTASI SISTEM PERPUSTAKAAN CERDAS BERBASIS SMART CARD DENGAN TEKNOLOGI NEAR FIELD COMMUNICATION (NFC) PADA POLITEKNIK PENERBANGAN MEDAN

2025-06-25T10:57:01+07:00

In today's digital era, efficient and modern library management has become an essential need for educational institutions. Medan Aviation Polytechnic as one of the institutions under the Ministry of Transportation, requires a library system that can optimize the borrowing and returning processes, as well as enhance services to users. This study aims to design and implement a smart library system based on smart card technology using Near Field Communication (NFC). The developed system utilizes smart cards as library membership cards integrated with NFC technology to facilitate access to the library system. The research methodology includes literature review, system design, implementation, and system testing. The test results show that all smart cards were successfully detected by the system, and only registered cards were allowed access. The maximum reading distance of the NFC reader was 4 cm, with an average access time of 0.42 seconds. The system also accurately classified book borrowing based on study programs. All system features functioned properly and received a high level of user satisfaction, with an average score of 4.59 out of 5, indicating that the system meets user needs, improves service quality, and modernizes library management.

Analisis Kinerja Lightning Arrester (LA) pada Pemancar Radio Di Gedung RRI Medan

2025-07-07T14:15:04+07:00

This study aims to evaluate how well lightning arresters protect the radio transmitter system in the RRI Medan Building from voltage surge disturbances caused by lightning strikes. Measurement of grounding resistance, field observation, and interviews with relevant technicians are all procedures used. The results of the study indicate that a grounding system with a resistance of less than 5 ohms can reduce voltage surges to a protection level of 99%. Choosing the distance of the arrester installation and conducting periodic maintenance are two important components in maintaining a reliable lightning protection system. It is expected to improve the safety of the device and the continuity of radio broadcasting services in extreme weather situations.

Analisis Lingkungan dan Sosial atas Implementasi Penerangan Jalan Umum Berbasis PLTS

2025-07-10T06:59:36+07:00

Public Street Lighting (PJU) based on Solar Power Plants (PLTS) is one of the renewable energy solutions that is starting to be widely applied in Indonesia, especially in areas that have not been reached by conventional electricity networks. This study aims to examine the environmental and social impact of the implementation of PJU PLTS in two regions with different characteristics. The method used is qualitative descriptive with the support of quantitative data, through interviews, observations, and questionnaire dissemination. The results of the study show that PJU PLTS is able to reduce carbon emissions, improve the visual quality of the night environment, and create a safe and productive space for the community. Social impacts include increasing a sense of security, growing night-time economic activities, and strengthening the social cohesion of citizens. However, challenges such as lack of technical education and community participation are still to be found. This study recommends increasing citizen involvement, battery waste management, and strengthening project sustainability monitoring. These findings reinforce the importance of a sustainable and inclusive approach in renewable energy projects at the local level.

Kajian Perencanaan Pembangkit Listrik Tenaga Surya Untuk Budidaya Ikan

2025-07-11T07:48:27+07:00

Sukaraya Village, Pancur Batu District, has great potential in the fisheries cultivation sector. Activities such as aeration and water pumping require reliable and efficient energy sources. Solar Power Plants (PLTS) are a sustainable solution that can overcome these obstacles, considering the abundant availability of sunlight in this area. This study aims to design an optimal PLTS system to support fish farming operations in Sukaraya Village. The design is carried out by considering the power needs of the fisheries system, the potential of solar energy, and the efficiency and reliability of the PLTS components. Based on the research results, the PLTS components consist of 15 pcs of 100 Wp polycrystalline solar panels, a 100 A solar charge controller, 4 12V 150Ah batteries, and an inverter capacity of 7000A. The results of calculations in the PLTS planning can distribute electricity with a load capacity of 5,760Wh. The results of the calculation of the overall cost required in the planning of a solar power plant for fish farming are Rp. 51,912,967

Analisis Efesiensi Energi Berbasis Konsumsi Daya Pada Tiga Generasi Teknologi Lampu

2025-07-11T07:53:00+07:00

The problem of limited energy and high household electricity consumption in Indonesia encourages the importance of implementing energy-efficient lighting technology. The still high use of energy-wasting incandescent lamps indicates the low energy literacy of the community in choosing efficient types of lamps. This study aims to analyze and compare the energy efficiency of three generations of lamp technology, namely incandescent lamps, compact fluorescent lamps (CFLs), and LED lamps, with an experimental approach. Testing was carried out using a wattmeter, lux meter, and infrared thermometer in a closed room with controlled conditions. Each type of lamp was tested with a light output equivalent to ±800 lumens. The test results showed that LED lamps had the lowest power consumption of 10 watts with the highest efficiency of 80 lumens per watt and a surface temperature of 45°C. CFLs have a power consumption of 15 watts with an efficiency of 53.3 lumens per watt and a temperature of 70°C. Meanwhile, incandescent lamps consume 60 watts with an efficiency of only 13.3 lumens per watt and a surface temperature of 120°C. Simulation of household use shows that the use of LEDs can save electricity costs of up to 112,500 rupiah per month compared to incandescent lamps. The results of this study provide empirical evidence that LEDs are the most efficient lighting solution in terms of energy, cost, and safety of use for the household sector.

Rancang Bangun Sistem Informasi Pengelolaan Aset PT Pengusaha Muda Perkasa Dengan Framework Codeigniter

2025-07-13T08:22:12+07:00

Pengelolaan aset yang efektif dan efisien menjadi faktor penting dalam mendukung operasional perusahaan, termasuk di PT Pengusaha Muda. Permasalahan yang dihadapi perusahaan ini antara lain adalah pencatatan aset yang masih dilakukan secara manual, kurangnya integrasi data, dan tingginya risiko kehilangan informasi. Untuk mengatasi hal tersebut, penelitian ini merancang dan membangun sistem informasi pengelolaan aset berbasis web dengan menggunakan framework CodeIgniter. Metodologi yang digunakan adalah pendekatan waterfall, yang terdiri dari tahap analisis kebutuhan, perancangan sistem, implementasi, pengujian, dan pemeliharaan. Hasil dari penelitian ini adalah sebuah sistem informasi yang mampu mencatat, mengelola, dan menyajikan data aset secara real-time, lengkap dengan fitur pencatatan aset, pelacakan status, pengelompokan, dan laporan aset. Pengujian sistem dilakukan dengan metode black box dan menunjukkan bahwa seluruh fungsi sistem berjalan sesuai dengan kebutuhan pengguna. Dengan adanya sistem ini, PT Pengusaha Muda dapat meningkatkan efisiensi dan akurasi dalam pengelolaan asetnya.

Desain dan Pembangunan Aplikasi Augmented Reality untuk Pengenalan Huruf Alphabet secara Interaktif pada Siswa dan Siswi Raudhatul Athfal Al Hasan Kota Binjai

2025-07-13T10:08:07+07:00

Humans today are very dependent on technology. Technology is a basic need of every individual. Raudhatul Athfal Al-Hasan has not utilized technology optimally in the teaching and learning process. Researchers have a goal to design and build Augmented Reality (AR) applications for interactive introduction of alphabet letters. The method used is Marker Based Tracking. This application is designed so that children can understand the material and use it easily in classroom learning activities. The focus of the research lies on the design and development of Augmented Reality (AR) applications. The users gave a positive assessment. The average System Usability Scale (SUS) score reached 80.8. The value is equivalent to Grade B. The application quality assessment is in the Excellent category. The level of user acceptance is in the Acceptable category. The results show that the application provides significant benefits in the learning process.

Analisis Pengaruh Beban Peralatan Bengkel Terhadap Intensitas Konsumsi Energi (IKE) Di PT.Buana Jaya Lestari

2025-07-14T21:16:28+07:00

This study analyzes the Energy Consumption Intensity (ECI) at the multi-story motorcycle workshop of PT. Buana Jaya Lestari in Medan to identify energy consumption characteristics and optimization potential. The research method used energy audits, direct measurements, and historical energy consumption data analysis over a 12-month period. The research object is a multi-story workshop with a total area of 1,850 m² distributed across three floors with different functions. The results of the study show a total ECI of 100.67 kWh/m²/year, which meets the national standard for commercial buildings with partial air conditioning. Energy consumption distribution per floor varies significantly: floor 1 (138.09 kWh/m²/year), floor 2 (99.84 kWh/m²/year), and floor 3 (48.00 kWh/m²/year). The air conditioning system dominates energy consumption with a contribution of 42.1%, followed by the lighting system (23.9%), workshop equipment (20.0%), and support systems (14.0%). The most influential factors are external ambient temperature (correlation 0.85) and the number of vehicles served (correlation 0.78). Energy savings potential reaches 13.4% or 24,878 kWh/year through optimization of the air conditioning system and retrofitting of the lighting system. Implementing energy conservation strategies can result in financial savings of Rp 37,317,000/year, a reduction in CO₂ emissions of 17.41 tons CO₂eq/year, and a decrease in the Energy Performance Index (EPI) to 87.25 kWh/m²/year.

Implementasi Sistem IoT Monitoring Kualitas Udara Dalam Kelas Untuk Kenyamanan Pengguna Ruangan

2025-07-14T21:29:09+07:00

This study aims to design and buiId an Internet of Things (IoT)based air quality monitoring system that can be applied in classrooms to support the comfort and health of room users. This system integrates the NodeMCU ESP8266 microcontroIIer with a DHT11 temperature and humidity sensor, and an MQ-135 air quality sensor. The environmental data obtained is displayed in real-time via the Blynk application and an OLED LCD screen, making it easy to monitor without having to be on site. The design process was carried out using the Research and Development (R&D) method approach, which includes the stages of identifying needs, designing, implementing, and testing the system in the fieId. The test results show that the system is able to provide accurate and stable data with temperature and humidity measurement deviations that are still within tolerance limits. This system is expected to be a simple but effective solution to maintain classroom air circulation, while increasing awareness of the importance of air quaIity in educational environments.

Evaluasi Sifat Mekanik Sambungan Saw Material BS 1501 223 490B Melalui Uji Destruktif

2025-07-15T08:54:48+07:00

his study aims to evaluate the mechanical properties of welded joints produced using the Submerged Arc Welding (SAW) method on BS 1501 223 490B steel material. The evaluation was carried out through destructive testing, including tensile test, bend test, and Charpy impact test. The tensile test revealed a maximum tensile strength of 584.39 N/mm² on the All Weld specimen, with an elongation of 26.23%. In the Transverse test, fracture occurred in the base metal, indicating that the weld joint had superior quality compared to the parent material. The bend test on both Face Bend and Root Bend specimens showed visually "Satisfactory" results, with maximum stress reaching 2,122.55 N/mm². The Charpy V-notch impact test indicated an average absorbed energy of 109.98 Joules at room temperature, demonstrating good toughness under impact loading. The results confirm that welded joints produced by the SAW method on BS 1501 223 490B steel exhibit excellent strength, ductility, and toughness, making them suitable for structural and high-pressure applications. This study reinforces the effectiveness of the SAW method in producing high-quality joints in the metal fabrication industry.

ANALISIS PERUBAHAN POLA OPERASI TERHADAP SUSUT TENAGA LISTRIK SISTEM DISTRIBUSI PLN ULP IMANDI

2025-07-18T09:20:48+07:00

Losses are a natural phenomenon that cannot be avoided, because they are absolute and certain to occur in the distribution of electric power. Technical losses are influenced by the type of cross-section, cross-sectional area, natural factors such as temperature, and so on. In this study, the author analyzes changes in operating patterns against losses at PT PLN ULP Imandi with a spindle system or can be supplied from other feeders. In ULP Imandi there are 3 feeders, namely SO1, SLO7, and OB2, each of which is supplied from a different GI (main substation). The purpose of this study is to analyze the technical losses that occur in ULP Imandi so that a value is obtained with the help of ETAP software which can then be used as a reference for evaluation. ULP Imandi has a feeder length of 207.22 kms with a AAAC 50mm2 cross-section of 60.093 kms, AAAC 95 mm2 of 84.273 kms, and AAACS 150 mm2 of 62.854 kms. With this data, the ideal loss value for ULP Imandi is 119,448 kWh/month.

Analisis Kinerja Sistem Proteksi Arus Lebih Pada PT. Sri Intan Karplas Industry

2025-07-18T10:07:17+07:00

This research explains the positive impact of the overcurrent relay (OCR) protection system, which functions to protect against excessive currents at PT. Sri Intan Karplas Industri. Overcurrent protection is the primary means of keeping equipment safe from problems such as short circuits and overloads. This research was conducted by observing specific situations and collecting field data, including test data and calculations on the MCGG82 OCR. Testing showed that the OCR relay was still suitable for use because the difference between the tripping time during testing and the calculated time was within 5%. This research also demonstrated that the OCR system is excellent at protecting against excessive currents, which can help protect electrical power systems in industrial environments.

Peningkatan Nilai Sistem Pertanahan Pada Tower Transmisi SUTT 70 kV PLTMG Flores – Labuan Bajo

2025-07-20T10:06:11+07:00

The construction of the 70 kV SUTT Rangko - Labuan Bajo transmission line has faced challenges in the grounding work. According to SPLN T5.012_2020, there are specific grounding requirements for the tower structures and cable parts of SUTT towers. Flores Island has mountainous and hilly terrain, with several active volcanoes, which often results in high and fluctuating soil resistivity. Improving the grounding value at the SUTT 70 kV Rangko - Labuan Bajo towers to meet SPLN T5.012_2020 standards is essential for enhancing the reliability of electrical installations and systems in Flores. Routine maintenance of the grounding system is necessary because it is crucial for protecting tower components, especially during lightning strikes. For the tower grounding improvement, the counterpoise method was used. Initial measurements showed that the grounding resistance at four tower points did not meet the required standard. This paper discusses improving the grounding value at these four towers using the counterpoise method, namely by adding stick rods to each tower leg until the required standard value is met (≤ 3 Ω for the five towers near the substation and a maximum of 10 Ω in other areas).

Analisis Gangguan Hubung Singkat dan Koordinasi Proteksi di Jaringan 20 KV PLTD Aneuk Laot ULP Sabang Dengan Simulasi ETAP 21.0.1

2025-07-21T09:40:41+07:00

Electricity plays a vital role in human life, so serious efforts are needed to ensure its reliable distribution. One of the main issues in electrical systems is short-circuit faults, which can cause equipment damage and widespread power outages. To minimize the impact of such faults, a protection system that is reliable, adequate, and well-coordinated is essential. A good protection system must meet several criteria, such as proper selectivity, the ability to quickly respond to disturbances to reduce equipment damage, high sensitivity to detect even the smallest faults based on regulated current levels, and efficient coordination and backup in case the main protection fails. It must also remain stable against external disturbances. To achieve reliable protection coordination, simulation is necessary. One tool that can be used is ETAP 21.0.1 software. ETAP helps in modeling the electrical network, calculating short-circuit currents, and evaluating the performance of primary and secondary protection coordination. The simulation results show that short-circuit current values vary at each busbar point depending on the system impedance and network configuration. Through this simulation, settings like the Time Multiplier Setting (TMS) and pickup current can be adjusted to improve relay coordination, making it more selective and reliable. This study provides valuable insight into the reliability and safety of the electricity distribution operating system in the Sabang ULP area.

ANALISIS PENGUJIAN KAPASITAS BATERAI 220 VDC UNTUK KEANDALAN PLTGU UNIT PEMBANGKITAN (UP) BELAWAN

2025-07-21T09:56:21+07:00

This study aims to analyze the capacity of a 220 VDC battery used in the acoustic system of the Gas and Steam Power Plant (PLTGU) at the Belawan Generating Unit (UP). Batteries have an important role as a backup energy source in maintaining the continuity of the electrical operational system, especially in emergency conditions. The research method includes testing the battery capacity by measuring current, voltage, and discharge time under various load conditions. The test results show that battery capacity can vary depending on temperature, age, and previous charging conditions. The data obtained are explained to rotate the battery performance in supporting the PLTGU system. This conclusion provides recommendations for routine maintenance and battery replacement, to ensure the electrical system at the Belawan UP continues to function optimally. This research is expected to be a reference for PLTGU managers in improving the efficiency of the power plant system.

Analisis Penggunaan Pembangkit Listrik Tenaga Surya Sebagai Suplai Cadangan Energi Pada Mesin Mixer Donat (Studi Kasus Di CV Youlanda)

2025-07-21T20:24:01+07:00

The need for stable electricity supply is a major challenge for Micro, Small, and Medium Enterprises (MSMEs), especially when disruptions occur in the main grid. This study examines the utilization of a small-scale Solar Power Generation System (PLTS) as a backup energy source to operate a donut mixer machine at CV Youlanda. The system consists of two solar panels with a combined power of 40 Wp, two 12V 8Ah batteries, a 1000W inverter, and a 20A charge controller (SCC). The research was conducted through direct field measurements to assess the performance and efficiency of the system under varying weather conditions. The observations show that in sunny weather, the system can generate about 200 Wh per day, which is sufficient to run two cycles of the mixer. The actual energy consumption per cycle was measured at 65.61 Wh. The total system efficiency was 2.63%, including panel efficiency of 8%, battery storage efficiency of 77%, and load efficiency of 42.71%. However, in cloudy weather, the available energy is only enough for about 8 minutes of operation. These findings indicate that, despite its limitations, small-scale PLTS remains a viable alternative energy solution that is cost-effective, environmentally friendly, and suitable for light operational needs in the MSME sector.

Rancang Bangun Sistem Konsentrator Cahaya Matahari Dengan Lensa Fresnel Untuk Meningkatkan Intensitas Cahaya Matahari Pada Panel Solar Cell

2025-07-22T10:05:31+07:00

Solar energy is one of the potential and environmentally friendly renewable energy sources. However, the efficiency of sunlight absorption by solar panels is often affected by the intensity of light received. This study aims to design and build a solar light concentrator system using a Fresnel lens to increase the intensity of light received by the solar panel. The issues addressed in this research include how to design a device with a Fresnel lens that can focus sunlight and how the use of this lens affects the electrical power generated by the solar panel. The research method includes the mechanical design of the concentrator system, installation of the Fresnel lens, and testing of light intensity and the output power of the solar panel before and after the lens application. This study is limited to the analysis of increased intensity and electrical power, without considering cost aspects or economic efficiency.

Perancangan Media Pembelajaran Hewan Berkaki Empat Berbasis Augmented Reality Untuk Siswa Paud Harapan Bunda Dengan Metode Design Thinking

2025-07-22T12:33:40+07:00

This study is to design an interactive learning media about four-legged animals based on Augmented Reality (AR) for students of PAUD Harapan Bunda. Conventional learning methods are often less effective in attracting the interest of early childhood learning, so innovation in learning media is needed. The Design Thinking approach is used in the development of this media, including the stages of Empathize, Define, Ideate, Prototype, and Test. The Empathize stage is carried out through observation and interviews with teachers and students to understand the needs and challenges of learning. The Define stage identifies the main problem, namely the lack of interesting and immersive media. At the Ideate stage, various AR learning media concepts are developed. Then, the Prototype stage involves building an AR application that allows students to see 3D models of four-legged animals in the real environment through mobile devices. The Test stage is carried out by direct trials on PAUD Harapan Bunda students to evaluate the effectiveness and ease of use of the media. The results of the study are expected to show that this AR learning media can significantly increase the motivation, understanding, and learning experience of PAUD Harapan Bunda students regarding four-legged animals.

Desain UI&UX Aplikasi Web Pemesanan Dekorasi Miss Eka Gallery Dengan Metode User-Centered Design

2025-07-22T20:02:11+07:00

Miss Eka Gallery is a decoration service business for various events such as weddings and birthdays that currently still uses conventional ordering methods through direct communication or social media. This ordering method often results in delayed responses, misinformation, and difficulties in order management. Therefore, this study was conducted to design a website application with optimal UI (User Interface) and UX (User Experience) design so that customers can easily view the decoration catalog, place orders, and get confirmation in real-time. The method used in this study is User-Centered Design (UCD) with a design thinking approach consisting of five stages, namely empathize, define, ideate, prototype, and test. Data were obtained through observation and questionnaires to application users to understand their needs, complaints, and preferences. The design results show that the developed web application prototype can display the decoration catalog well, simplify the ordering process, and provide easy service confirmation to customers. Based on testing using the System Usability Scale (SUS) and User Experience Questionnaire (UEQ) on 14 respondents, it was found that most users still felt less helped, especially in the aspects of navigation and clarity of decoration information. Respondents also suggested adding features such as a chatbot, QRIS payment methods, and a photo gallery of on-site decorations. The results showed that interactive and user-friendly UI/UX design can increase customer satisfaction. Further research is recommended to develop these additional features to optimize the application and meet user expectations.

Kajian Perencanaan Pembangkit Listrik Tenaga Surya Untuk Budidaya Ikan

2025-07-24T07:42:56+07:00

Desain dan Pengembangan Aplikasi Penjualan Berbasis Website di Float Smoothies Shop Medan

2025-07-24T12:17:02+07:00

The development of information technology is driving digitalization in various sectors, including the culinary business. Medan Float Smoothies still uses a conventional sales system, which creates various obstacles in order recording, stock management, and financial reporting. Therefore, this study aims to design and develop a website-based sales system to improve operational efficiency. The research method used is Research and Development (R&D) with a Software Development Life Cycle (SDLC) Waterfall model approach. The results show that the implementation of the PHP and MySQL-based system has successfully replaced manual processes, improved transaction accuracy, and expanded market reach through the online ordering feature. With this system, customers can easily view products, make transactions, and obtain real-time stock information. The benefits of this research are increased business efficiency, reduced transaction errors, and provided a more practical shopping experience for customers.

Analisis Gangguan Rotor Pada Motor Filter Open Circulating Cooling Water (OCCW) Di Sistem Pendingin PLTU Pangkalan Susu Unit 1 Dan 2

2025-07-25T10:37:38+07:00

The Open Circulating Cooling Water (OCCW) filter motor is a critical component in the power plant cooling system that functions to filter seawater before it is used to cool equipment such as the Heat Exchanger Close Circulating Cooling Water System, Hydrogen Generator Cooler, and Turbine Lubricating Oil Cooler.This study aims to analyze the rotor disturbance in the OCCW filter motor and develop solutions to improve the reliability of the cooling system.The analysis was conducted using predictive maintenance methods with vibration analysis techniques based on ISO 10816-3 standards, interviews with operators, direct observations, and operational documentation at the Pangkalan Susu Power Plant Unit 1 and 2. Vibration measurements showed abnormal values at bearing 1H (8.4 mm/s) and bearing 2H (7.5 mm/s), exceeding the ISO 10816-3 standard limit (≤7.1 mm/s) and falling into the "danger" category. Spectrum analysis identified damage to the rotor bearing with a dominance of Ball Pass Frequency Outer Race (BPFO) at 2.2 x order. Replacing the bushing with an SKF 6306-Z/C3 bearing successfully reduced the vibration values to the normal range (0.56-1.01 mm/s). The implementation of bearings as a replacement for the bushing proved effective in addressing the OCCW filter motor rotor disturbance, preventing unit derating of 80 MW, and saving financial losses of up to IDR 865,280,000 per occurrence with an investment cost of only IDR 7,970,000.

Analisis Pengaruh Beban Peralatan Bengkel Terhadap Intensitas Konsumsi Energi (IKE) di PT. Buana Jaya Lestari

2025-07-25T10:49:02+07:00

DETEKSI SHORT CIRCUIT PADA INSTALASI LISTRIK RUMAH TINGGAL BERBASIS ARDUINO

2025-07-25T11:24:55+07:00

This research aims to design and test a prototype short circuit detection system for residential electrical installations based on the Arduino Uno microcontroller. The system employs the ACS712 current sensor to detect current surges and uses a relay module to automatically disconnect only the affected circuit. The test results show that the system can accurately detect short circuits with an average response time of 35 milliseconds. It also provides fault location information through an LCD display, improving the efficiency of technical handling. Sensor calibration indicates acceptable accuracy, with measurement deviation under 7%. This system is effective in enhancing residential electrical safety and minimizing the impact of faults on other circuits

Implementasi Metode ROC dan SMART dalam Sistem Pendukung Keputusan Pemilihan Lokasi Cabang Bimbingan Belajar AlphaKids Generation

2025-07-25T20:50:51+07:00

Strategic location selection is a crucial factor in the success of business expansion, including in the education sector such as tutoring institutions. AlphaKids Generation, as a growing tutoring center, requires an objective and structured system to determine new branch locations. This study aims to design a decision support system based on the Rank Order Centroid (ROC) and Simple Multi Attribute Rating Technique (SMART) methods to assist the location selection process. The ROC method is used to determine the weight of criteria based on their priority, while the SMART method evaluates location alternatives based on performance scores and assigned weights. The system was developed using the Rapid Application Development (RAD) approach and implemented on a web-based platform. The results show that location A5 (Jl. Karya Jaya) is the best alternative, achieving the highest score of 1.000. This system supports decision-makers in selecting the most appropriate location through a quantitative and objective analysis.

ANALISIS KINERJA HELM PELINDUNG DIRI PADA PEKERJA INDUSTRI MENGGUNAKAN SENSOR LIGHT DEPENDENT RESISTOR UNTUK MINIMALISIR KECELAKAAN

2025-07-29T08:40:48+07:00

Industry is a sector that requires special attention regarding worker safety. To increase the level of safety, the use of Personal Protective Equipment (PPE) connected to sensors is an innovative smart solution. By utilizing Internet of Things technology, the PPE system can provide real-time information regarding worker conditions and the work environment. Worker helmets are equipped with LDR sensors, which function to provide warnings to workers who are not wearing helmets and send information to the field supervision center via the Telegram application These sensors confirm the presence of workers and provide information about their activities. The LDR sensors are connected to a central monitoring system that enables real-time monitoring and rapid response to workers who are not wearing PPE helmets. This solution not only provides maximum protection against the risk of accidents, but also increases efficiency in safety management in industry. With automatic notifications and connection to a central system, this solution is a proactive step towards a safer and more efficient work environment in the industrial sector.

ANALISIS KINERJA KENDALI OTOMATIS GREENHOUSE PIGGYBACK BERBASIS PLC DENGAN METODE IRIGASI SUMBU (WICK SYSTEM)

2025-07-30T14:07:29+07:00

This study aims to analyze the performance of an automated control system in a piggyback greenhouse that implements a Programmable Logic Controller (PLC) as the control center, using a wick irrigation system for the plants. A piggyback greenhouse is a multi-story greenhouse concept designed for space efficiency in urban agriculture. This system utilizes soil moisture, temperature, and light sensors to monitor environmental conditions, along with actuators such as water pumps and ventilation systems controlled by a PLC. The wick irrigation method was chosen for its efficiency and energy savings, as water is absorbed by the plants through capillary action. Tests were conducted in several environmental scenarios to assess the response and stability of the automated control system. The test results showed that the system was able to consistently maintain soil moisture within the optimal range of 60–80%, with an average response time of 3 seconds for pump activation. Furthermore, the use of a PLC allows for flexibility in control logic settings and operational efficiency. Overall, the PLC-based piggyback greenhouse system with wick irrigation has proven effective in improving agricultural environmental control and supporting small-scale precision agriculture concepts. This research can serve as a basis for further development in the application of automation technology in the modern urban agricultural sector.

Analisis Efesiensi Energi Berbasis Konsumsi Daya Pada Tiga Generasi Teknologi Lampu

2025-07-30T14:22:47+07:00

APLIKASI MONITORING MANAJEMEN OPERASIONAL PERKEBUNAN SAWIT BERBASIS WEB

2025-07-30T19:43:32+07:00

The oil palm plantation sector in Indonesia faces significant operational efficiency challenges due to manual record-keeping, limited field activity monitoring, and suboptimal resource management, potentially leading to decreased yields and productivity. This research aims to develop a "Web-Based Oil Palm Plantation Operational Management Monitoring Application" for the AM4 Oil Palm Plantation in Alur Meranti Hamlet, Besitang District. The system is designed to provide accurate digital data recording and reporting, integrated with real-time field activity monitoring (including fertilization and maintenance), and integrated resource management. Utilizing the waterfall methodology, system development involved in- depth requirements analysis, design, implementation, testing, and maintenance. The results indicate that this application significantly enhances operational efficiency, data accuracy, and supports more effective managerial decision-making based on real-time data, surpassing the focus of previous research. This success demonstrates the substantial potential of information technology in optimizing oil palm plantation management, contributing to increased productivity and operational sustainability. Furthermore, the implementation of this web-based system is expected to minimize human error in data entry, provide a centralized database for easier access and analysis, and foster a more proactive approach to plantation management. By enabling real-time insights into crucial operational aspects, the application empowers plantation managers to make timely adjustments, optimize resource allocation, and ultimately boost overall output. This innovation serves as a model for other plantations grappling with similar challenges, highlighting the transformative power of digital solutions in modern agriculture.

Implementasi Sistem Informasi Pelayanan Kantor Urusan Agama Kecamatan Babalan Berbasis Website

2025-07-30T20:23:05+07:00

The advancement of information technology has driven many institutions to improve their services, including the Office of Religious Affairs (KUA). In this study, the author designed and developed a web-based information system aimed at supporting digital services at the KUA of Babalan District. This system is designed to facilitate three main services: family consultation registration, marriage dispensation letter requests, and applications for certificates of unmarried status. The system was developed using the Waterfall approach, which involves a series of stages from needs identification to testing and maintenance. Technically, the system utilizes PHP as the programming language, MySQL for database management, and Tailwind CSS to create a simple and user-friendly interface. Based on the testing results, the system has proven to be effective in accelerating service processes, reducing data entry errors, and making it easier for the public to access services online. Additionally, the system provides convenience for administrators, particularly in verifying documents. Overall, this system demonstrates significant potential in supporting the digitalization of services within the KUA environment.

RANCANG BANGUN WEBSITE UNTUK MEDIA PROMOSI PADA UMKM KUNYAHAN MEDAN

2025-07-31T21:22:10+07:00

The rapid advancement of information technology has encouraged Micro, Small, and Medium Enterprises (MSMEs) to adopt digital media as an effective promotional strategy. Kunyahan Medan MSME, which specializes in producing traditional Medan snacks, still relies on promotions through bazaars, hotels, and social media, without an official website that could expand its market reach digitally. This study aims to design and develop a promotional website using Laravel and MySQL, applying the Waterfall methodology. The web development stages include requirements analysis, system design, implementation, testing, and maintenance. The website is built with two user roles: visitors and administrators. Key features include a product list, product details, contact page, and WhatsApp chatbot integration to facilitate direct communication with customers. Testing using the Blackbox method showed that all features functioned properly and were responsive across various devices. This study demonstrates that website development using the Waterfall method can be an effective and efficient solution to support digital promotion for MSMEs, contribute to expanding digital market reach, improve the quality of delivered information, and provide a better digital interaction experience for customers.

Penerapan Sistem Informasi Deteksi Stunting Dengan Menggunakan K-means Clustering Berbasis Web

2025-08-01T10:48:33+07:00

Stunting is a serious problem in the field of child health in Indonesia caused by chronic malnutrition, especially in the first 1,000 days of life. To overcome this problem, an efficient and accurate early detection method is needed to accelerate intervention. This study aims to develop a web-based information system that is able to group toddler data and identify potential risks of stunting using the K-means clustering algorithm. The system was developed with a waterfall approach and uses anthropometric attributes such as weight, height, age, and gender as clustering parameters. The grouping results are displayed in the form of tables and graphic visualizations to facilitate analysis. This system is designed to be easily accessible to health workers and policy makers, so that it can support more targeted decision making in efforts to overcome stunting.

Rancang Bangun Sistem Keamanan Kampus Politeknik Negeri Medan Berbasis IoT dengan Deteksi Gerakan dan Pengawasan Jarak Jauh

2025-08-01T11:20:57+07:00

This research aims to design and build a security system at the Medan State Polytechnic Campus based on the Internet of Things (IoT) which is equipped with motion detection and remote surveillance features. The system is designed to improve campus security by utilizing sensor technology and internet connectivity that allows real-time monitoring. In this study, motion sensors were installed in strategic areas on campus to detect suspicious activity. The data from the sensor will be sent to the server and processed to provide notifications to users through the mobile application when unusual movements are detected. The system is also equipped with remotely accessible surveillance cameras, allowing users to monitor the situation on campus anytime and anywhere. Research methods include system design, hardware and software programming, and system testing to ensure its performance and reliability. The test results showed that the system could detect movement with high accuracy and send notifications in less than a second. The remote surveillance feature also works well, giving users direct access to view live video footage. The conclusion of this study is that the designed IoT-based security system is effective in improving the security of the Polmed Campus. It is hoped that this system can be widely applied in other educational institutions to support the safety of students and staff. This research also opens up opportunities for further development in IoT-based security technologies.

Sistem Pemantauan Kualitas Udara Berbasis IoT di Lingkungan Kampus Politeknik Negeri Medan

2025-08-01T13:24:09+07:00

This research aims to design and implement an Internet of Things (IoT)-based air quality monitoring system in the Medan State Polytechnic Campus. Given the importance of air quality for the health and comfort of the academic community, the system is designed to monitor air quality parameters such as PM2.5 concentration, CO2, and temperature in real-time. The developed system uses sensors integrated with microcontrollers and wireless communication modules to transmit data to the cloud platform. The collected data will be analyzed and displayed through a mobile application, which allows users to access air quality information at various locations within the campus directly. The test results show that the system can provide accurate data with a fast response rate, as well as the ability to identify patterns of changes in air quality. Feedback from users shows that this system is very helpful in raising awareness of the importance of air quality and its impact on health. The conclusion of this study is that the implementation of an IoT-based air quality monitoring system in the Medan State Polytechnic Campus can contribute positively to maintaining the health of the academic community and supporting efforts to sustain the campus environment.

Rancang Bangun Sistem Pendeteksi Kebocoran Gas Berbasis Internet of Things di Lingkungan Rumah Tangga

2025-08-01T13:30:18+07:00

This research aims to design and build an Internet of Things (IoT)-based gas leak detection system aimed at improving safety in the household environment. Gas leaks, which can potentially lead to fires and explosions, require quick and efficient detection. The developed system uses gas sensors connected to microcontrollers to monitor the concentration of hazardous gases, such as methane and propane, in real-time. Data from the sensor is sent via a wireless communication module to the mobile app, which allows users to receive instant notifications if a gas leak is detected. The test results show that the system is capable of detecting leaks with high accuracy and fast response times. Field trials also indicate that the system functions effectively in a wide range of environmental conditions. Feedback from users shows that the developed mobile app is easy to use and provides clear information about the status of gas leaks. This study concludes that IoT-based gas leak detection systems can be an effective solution to improve safety in households. It is hoped that this system can be widely applied to protect the public from the risk of gas leaks.

Analisis Pengujian Pemutus Tenaga (PMT) 150 KV Bay Penghantar Tanjung Pura di Gardu Induk Pangkalan Brandan

2025-08-04T12:30:37+07:00

Biannual preventive-maintenance results (2022 & 2024) for the 150 kV Tanjung Pura line bay circuit breaker at Pangkalan Brandan Substation confirm reliable performance. Offline tests with Kyoritsu 3125 (5 kV) and ISA CBA-2000/Megger evaluated insulation resistance, contact resistance, operating time and contact synchronization against SPLN 52-1:1984, KEPDIR 0520-2.K/DIR/2014 and OEM limits (≤120 % FAT, ≤120 ms for 150 kV).

Insulation far exceeded 1 MΩ/kV: 315–428 GΩ (62 600–85 600 MΩ/kV) in 2022 and 181–190 GΩ (36 200–38 000 MΩ/kV) in 2024; the drop is within safe bounds and linked to instrument variance and insulator surface condition. Contact resistance stayed low at 36.0–38.7 µΩ (<40 µΩ), although resistive loss rose from 0.13–0.139 W to 0.435–0.468 W due to higher load current. Opening time was 37.3–38.9 ms and closing time 68.2–72.6 ms, both compliant. Contact synchronization measured 0.3–0.8 ms open and 3–3.4 ms close, well below the 10 ms limit.

The breaker is operationally healthy. Recommendations: periodic instrument calibration, pre-test insulator cleaning, strict adherence to SOPs and safety standards, and improved crew coordination for future consistency and safety.

Penerapan Smart Grid pada Sistem Distribusi Listrik di Sumatera Utara: Analisis Efisiensi Energi, Keandalan Pasokan, dan Tantangan Implementasi Teknologi Modern di Era Transisi Energi

2025-08-04T21:22:13+07:00

The rapid growth of electricity demand demands an efficient and reliable electricity distribution system. Conventional distribution systems in Indonesia still face various obstacles such as high power losses, low supply fulfillment, and uneven network infrastructure. Smart grids are present as an innovative solution through the integration of information and communication technology (ICT) in distribution systems, which allows real-time monitoring and control of power flow. This study aims to examine the effect of smart grid implementation on the efficiency and efficiency of electricity distribution systems, as well as identify the challenges and benefits of implementing them in Indonesia. The research method used is a descriptive qualitative approach based on literature studies from various journals, technical reports, and related policies. The results of the study show that smart grids are able to reduce losses by 3–6% and significantly reduce SAIDI and SAIFI values. In addition, this system increases consumer participation through demand response and facilitates the integration of renewable energy. The main obstacles identified include high investment costs, limited regulations, and low public awareness of this technology. These findings are expected to be a reference in developing a more modern and sustainable electricity distribution system in Indonesia.

Sistem Informasi Perpustakan Berbasis Web Pada Sd 028303 Binjai Barat

2025-08-07T12:32:03+07:00

School libraries play an important role in supporting the learning process, especially at the elementary school level. As a learning resource center, the library provides a variety of reading materials that support the learning activities of both students and teachers. However, library management that is still carried out manually—such as recording book loans and returns using logbooks—often causes several problems, including recording errors, delays in data searches, and difficulties in report preparation. This condition requires a technology-based solution that can improve the efficiency and accuracy of library data management.

This study aims to design and develop a web-based library information system to be used at SD Negeri 028303 Binjai Barat. The development method used is the prototyping model, which allows users to provide direct feedback on the early version (prototype) of the system being developed. This method was chosen to ensure the system truly aligns with users' needs in the field. The system includes key features such as user login, book data management, member data management, loan and return transactions, as well as automated transaction reporting.

The implementation results show that the system functions well as expected. It is capable of speeding up library services, minimizing recording errors, and providing convenience for staff and students in accessing information. Therefore, the implementation of this web-based library information system can significantly improve the quality of library services and support a more effective teaching and learning process at SD Negeri 028303 Binjai Barat.