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Pengembangan Sistem Informasi Laboratorium Kesehatan Andre Febrianto; Radhinka Bagaskara; Muhammad Artha Jabatsudewa Maras; Muhammad Rizky Hikmatullah; Syamsyarief Baqaruzi
Jutisi : Jurnal Ilmiah Teknik Informatika dan Sistem Informasi Vol 12, No 1: April 2023
Publisher : STMIK Banjarbaru

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35889/jutisi.v12i1.1179

During its development, the Provincial Health Laboratory of Lampung encountered a number of challenges, including a manual registration process, a lack of integration of laboratory test findings into a single container, and other manual administrative tasks. The Laboratory Information System was designed using the scrum development deploy with waterfall methodology with a step-by-step process beginning with customer data input, action recording, analysis verification, confirmation from laboratory doctors, and output in the form of information regarding examination fees, reports on results of clinical and non-clinical laboratory examinations, results recapitulation and history of laboratory examinations, statistical reports on examination results, financial reports, and daily logs. The outcomes of this Laboratory Information System meet the needs of all stakeholders in terms of enhancing the quality of services at health institutions, particularly health laboratories in the province of Lampung.Keywords: Laboratory Information System; Scrum Model; Health service quality. AbstrakDalam perjalanannya Laboratorium Kesehatan Provinsi Lampung yang dikembangkan memiliki beberapa kendala yang dihadapi antara lain proses registrasi yang masih manual, pencatatan hasil uji laboratorium yang belum terintegrasi dalam satu wadah dan kegiatan administrasi manual lainnya. Sistem Informasi Laboratorium (SIL) yang dirancang menggunakan metodologi Waterfall dalam pengembangan Scrum dengan proses tahapan dimulai dari input data pelanggan, pencatatan tindakan, verifikasi analisis, konfirmasi dari dokter yang ada di laboratorium, dan luaran berupa informasi mengenai biaya pemeriksaan, laporan hasil pemeriksaan laboratorium klinis dan non klinis, rekapitulasi hasil dan riwayat pemeriksaan laboratorium, laporan statistik hasil pemeriksaan, laporan keuangan, laporan pendapatan harian/mingguan/bulanan/tahunan, laporan setoran kas, statistik laporan pendapatan, laporan pemakaian reagen, laporan pengguna layanan (pelanggan), pengambilan hasil laboratorium oleh pelanggan, laporan turn around time, rekapitulasi data pelanggan, rekapitulasi data dokter, dan rekapitulasi data analis. Hasil SIL ini menjawab kebutuhan kepada semua pemangku kepentingan terkait peningkatan mutu layanan pada fasilitas kesehatan khususnya laboratorium kesehatan di Provinsi Lampung.

IMPLEMENTASI SISTEM INFORMASI BERBASIS WEB PADA UNIT KERJA PENGADAAN BARANG DAN JASA (UKPBJ) INSTITUT TEKNOLOGI SUMATERA Andre Febrianto; Ilham Firman Ashari; Muhammad Rizky Hikmatullah; Radhinka Bagaskara; Syamsyarief Baqaruzi; Fikri Halim Ch
JSR : Jaringan Sistem Informasi Robotik Vol 7, No 1 (2023): JSR: Jaringan Sistem Informasi Robotik
Publisher : AMIK Mitra Gama

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.58486/jsr.v7i1.221

Institut Teknologi Sumatera (ITERA), sebagai salah satu Perguruan Tinggi Negeri di Indonesia, mengelola proses pengadaan barang/jasa secara mandiri untuk menunjang proses belajar mengajar dan operasional lainnya. Kegiatan pengadaan barang/jasa dinaungi oleh Unit Kerja Pengadaan Barang dan Jasa (UKPBJ) ITERA dan berlandaskan pada Peraturan Presiden Nomor 12 Tahun 2021 tentang perubahan atas Peraturan Presiden Nomor 16 Tahun 2018 yang mengatur pengadaan Barang/Jasa Pemerintah. Sebagian besar anggaran ITERA dibelanjakan dengan metode pengadaan langsung, seperti halnya yang dilakukan di tingkat Kementerian, Lembaga, dan Pemerintah Daerah. Oleh karena itu, UKPBJ ITERA sangat bergantung pada metode pengadaan langsung untuk menyerap anggaran. Pada pelaksanaanya, proses pengajuan dan monitoring pelaksanaan pengadaan barang dan jasa yang ada di lingkungan ITERA sejauh ini masih menggunakan cara konvensional. Penelitian ini menghasilkan pembuatan sistem informasi berbasis web dengan menggunakan framework Vue Js di sisi client dan framework Laravel di sisi server untuk memecahkan permasalahan yang ada. Dalam penelitian ini, sistem informasi manajemen pengadaan UKPBJ ITERA akan dikembangkan dengan harapan dapat meningkatkan pelayanan pengadaan barang dan jasa yang cepat, efektif, dan efisien. Hasil dari implementasi adalah melakukan pencatatan dan monitoring terhadap proses pengadaan dengan pendekatan test driven development dikelompokkan secara tiga tahap diantaranya unit testing, code generation, dan refactoring yang akan diterapkan secara berulang pada masing-masing 21 user story dalam hal ini aktornya adalah Ketua UKPBJ ITERA, Pejabat Pembuat Komitmen, Pejabat Pengadaan, Tim HPS, Tim Kontrak, Tim Teknis, dan Unit di ITERA.Kata Kunci: UKPBJ, Pengadaan, Sistem informasi, pencatatan, monitoring

ANALISIS SISTEM HIBRIDA TEGANGAN PLN VS TEGANGAN PANEL SURYA 30 WP PADA OTOPED ELECTRIC VEHICLE (EV) Yesi Oktaviani; Syamsyarief Baqaruzi; Heriansyah -
Power Elektronik : Jurnal Orang Elektro Vol 11, No 1 (2022): POWER ELEKTRONIK
Publisher : Politeknik Harapan Bersama Tegal

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30591/polektro.v11i1.2676

Tingkat pertumbuhan populasi manusia diiringi dengan meningkatnya teknologi untuk mempermudah pekerjaan manusia salah satunya adalah transportasi. Dengan mulai diterapkannya teknologi ramah lingkungan, banyak bermunculan alat transportasi berbasis motor listrik. Otoped Electric Vehicle (OTEV) adalah salah satu alat transportasi yang menggunakan aki sebagai sumber power untuk menggerakkannya. Diperuntukkan untuk di luar ruangan sehingga dinilai efektif dengan menggunakan sumber energi cahaya matahari sebagai sumber cadangan selain dari PLN. Sumber pengecasan menggunakan sistem hibrid antara PV dan PLN yang diatur oleh relay dan kontak pada handle gas. Ketika kontak pada posisi on, sumber pengecasan dapat dilakukan menggunakan PLN. Dan ketika kontak dalam posisi off, sumber pengecasan akan terhubung dengan panel surya. Pada hasil pengujian telah berhasil diterapkan sesuai dengan yang telah direncanakan.

Deficit Threshold Optimization of an Automatic Transfer Switch for Hybrid Grid-Photovoltaic Systems in Tropical Climates Syamsyarief Baqaruzi; Cuk Supriyadi Ali Nandar; Ali Muhtar; Muhammad Rizky Hikmatullah; Norzanah Rosmin
JET (Journal of Electrical Technology) Vol 11, No 1 (2026): EDISI FEBRUARI
Publisher : Universitas Islam Sumatera Utara

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30743/jet.v11i1.13295

The rising demand for dependable power supply in tropical areas, characterized by frequent grid instability, requires the use of automated transfer switches (ATS) in hybrid photovoltaic (PV)-grid systems. This study assesses the efficacy of an Arduino Mega 2560-based Automated Testing System (ATS) coupled with a 100 Wp polycrystalline photovoltaic panel and a 12 V 100 Ah battery in the tropical climate of Lampung, Indonesia, over a span of 15 consecutive days in January. The process encompasses hardware design, the construction of a control algorithm based on a multi-objective cost function incorporating risk factors, field data gathering, and MATLAB simulation. The findings indicate that the system attains 80% grid independence based on day count and exceeds 95% based on total energy, accompanied with a minimal switching frequency of 0.2 occurrences per day, signifying stable operation devoid of chattering. A significant contribution is the optimization of the shortfall threshold: adjusting the threshold from 0 Wh to –10 Wh decreases grid reliance from three days to one day, enhancing PV utilization from 80% to 93.3% without adding battery capacity. The relationship between irradiance and photovoltaic energy is robust (r = 0.94, R² = 0.88), with an average system efficiency of 10.04%, which is plausible for polycrystalline panels in hot, humid environments, including cable, inverter, and heat losses. The boxplot analysis verifies the absence of overlap between energy balances on photovoltaic days and grid days, hence affirming the reliability of ATS judgments. In conclusion, the suggested ATS featuring an adjustable deficit threshold is an economical and dependable option for telecommunication infrastructure in tropical developing areas.

Modelling Optimisation of Distributed PV-Battery Charge and Discharge Modes Using Systems for Improved Sustainable Energy Management Syamsyarief Baqaruzi; Amrina Mustaqim; Ali Muhtar; Muhammad Rizky Hikmatullah; Rahmat Fadhilah; Andika Munandar; Edo Kharisma Army; Setiadi Wira Buana; Rizqi Wahyudi; Muhammad Rifqi Dwi S
Engineering Science Letter Vol. 5 No. 01 (2026): Engineering Science Letter
Publisher : The Indonesian Institute of Science and Technology Research

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.56741/IISTR.esl.001508

This study examines the simulation of charge and discharge modes of lithium-ion batteries in a distributed photovoltaic system using MATLAB/ Simulink modeling. The objective is to analyze the integration of solar panels with battery-based energy storage systems to optimize performance and efficiency. The methodology involves mathematical modeling of photovoltaic cells based on p-n junctions, with key parameters such as temperature (15–30°C) and irradiance (1000 W/m²), along with the design of a Solar Charge Controller (SCC) to regulate energy flow. Simulations were conducted on four 150 W photovoltaic panels under varying environmental conditions, integrated with parallel-connected 12 V 250 Ah batteries. Results show a system efficiency of 87% at 25°C and 1000 W/m² irradiance, with panel output voltages aligning with mathematical equations (0.15 A error). Discharge mode analysis, accounting for system losses (inverter 5%, SCC 3%, wiring 2%), confirms the battery can supply a 5 Ω load for approximately 2.00 hours at 45% State of Charge (SOC), representing a 9.5% reduction from the ideal calculation. Simulations also compare SCC performance using DC and photovoltaic sources, demonstrating consistency in energy flow regulation. Validation results indicate the Simulink model’s accuracy in representing real-world characteristics, though MATLAB code simulations exhibit higher precision. The study highlights the importance of SCC control and SOC management to enhance battery lifespan and stability in renewable hybrid energy systems. Implications include potential applications.

Deficit Threshold Optimization of an Automatic Transfer Switch for Hybrid Grid-Photovoltaic Systems in Tropical Climates Syamsyarief Baqaruzi; Cuk Supriyadi Ali Nandar; Ali Muhtar; Muhammad Rizky Hikmatullah; Norzanah Rosmin
JET (Journal of Electrical Technology) Vol 11, No 1 (2026): EDISI FEBRUARI
Publisher : Universitas Islam Sumatera Utara

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30743/jet.v11i1.13295

The rising demand for dependable power supply in tropical areas, characterized by frequent grid instability, requires the use of automated transfer switches (ATS) in hybrid photovoltaic (PV)-grid systems. This study assesses the efficacy of an Arduino Mega 2560-based Automated Testing System (ATS) coupled with a 100 Wp polycrystalline photovoltaic panel and a 12 V 100 Ah battery in the tropical climate of Lampung, Indonesia, over a span of 15 consecutive days in January. The process encompasses hardware design, the construction of a control algorithm based on a multi-objective cost function incorporating risk factors, field data gathering, and MATLAB simulation. The findings indicate that the system attains 80% grid independence based on day count and exceeds 95% based on total energy, accompanied with a minimal switching frequency of 0.2 occurrences per day, signifying stable operation devoid of chattering. A significant contribution is the optimization of the shortfall threshold: adjusting the threshold from 0 Wh to –10 Wh decreases grid reliance from three days to one day, enhancing PV utilization from 80% to 93.3% without adding battery capacity. The relationship between irradiance and photovoltaic energy is robust (r = 0.94, R² = 0.88), with an average system efficiency of 10.04%, which is plausible for polycrystalline panels in hot, humid environments, including cable, inverter, and heat losses. The boxplot analysis verifies the absence of overlap between energy balances on photovoltaic days and grid days, hence affirming the reliability of ATS judgments. In conclusion, the suggested ATS featuring an adjustable deficit threshold is an economical and dependable option for telecommunication infrastructure in tropical developing areas.

Forecasting of Using Electricity Consumption at ITERA (Institut Teknologi Sumatera) until 2025, to Improve Application of Renewable Energy in Lampung Province Syamsyarief Baqaruzi; Ali Muhtar; Deny Juanda Puradimaja
Journal of Sustainability Perspectives Vol 1, No 3 (2021)
Publisher : Universitas Diponegoro

Institut Teknologi Sumatera (ITERA) is a new campus located in Lampung province- Indonesia. It is almost 6 years old, within large data on the total population human activity in this 275-hectare campus around 9500 persons, so that necessary to forecasting energy demand in the future, ITERA can project programs that are in line with the Indonesian government, specifically increasing using of renewable energy. which the government has a national energy policy in 2025 of 23%. Mostly in Lampung province, the electricity produced is still dominated by fossil energy (e.g., coal, diesel, etc), therefore as a campus with a technological background, ITERA must be able to bring a paradigm shift to be used from electricity consumption in the surrounding areas. The results of this study will project electricity usage in ITERA over the next 5 year, where electricity usage in ITERA 2019 is 2.472 GWh or 6,775 KWh/day, expected with a development strategy to implementing the efficiency of green energy, so that can meet the challenges of reducing CO2 emissions and energy-saving behavior, also keep sustainable impact for Indonesia.

The Effect of Halbach Array Configuration on Permanent-Magnet Synchronous Generator (PMSG) Outer-Runner Syamsyarief Baqaruzi; Afit Afit Miranto; Dede Wahyuda
International Journal of Engineering, Science and Information Technology Vol 1, No 2 (2021)
Publisher : Malikussaleh University, Aceh, Indonesia

Permanent-Magnet Synchronous Generator it can provide highly reliable power generation with small in size, no copper losses in the rotor circuit, no need for external excitation. We designed and simulated the PMSG with 12 slots and 8 poles with an alternating polarity magnet configuration: NN-SS-NN-SS-NN-SS-NN-SS-NN-SS-NN magnetic flux per pole in the outer stator and the inner stator has been assumed to be constant, following sizes and materials described in this paper. The generator's number of poles is determined by stacking several sections of the magnet side by side and grouping opposite poles in a continuous pattern. the initial design of the PMSG 12 slots and 8 poles outer-runner compare to see how the halbach array configuration changes the output parameter, it will be included. Proportional to the load size and speed The larger the magnetic flux generated by the movement of the magnetic field, the higher the rpm, and the heavier the coil magnetic flux obtained, the higher the induced voltage. This research use five speed variations varying from 1000 to 5000 rpm and load variation from 5 ohm, 15 ohm, 30 ohm, 60 ohm, and 100 ohm. With the effect that the flux distribution is voltage generated at a 5 ohm load only increases at 1000 rpm, while the increase in torque produces an increase in the amount of input power at 30 ohm, which is equal to both the speed and the amount of torque, where the input power increases at all speeds at a load of 30 ohm. This also arises when the output power generated at a load of 30 ohm increases by a high efficiency of over 86%.

LSTM-Based Daily Power Forecasting for a 1 MWp PV System in Tropical Indonesia: Toward Operational Optimization Ali Muhtar; Syamsyarief Baqaruzi; Putty Yunesti
Jurnal Elektronika dan Telekomunikasi Vol. 26 No. 1 (2026)
Publisher : National Research and Innovation Agency

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.55981/jet.777

Variations in solar irradiance and module temperature significantly affect the performance and operational efficiency of large-scale photovoltaic (PV) power systems, especially in tropical regions. This study investigates the application of a Long Short-Term Memory (LSTM) network for accurate real-time power prediction in a 1 MWp PV power plant at Institut Teknologi Sumatera (ITERA), Indonesia. Unlike traditional approaches and conventional artificial neural networks (ANN), LSTM networks can effectively capture long-term temporal dependencies and highly nonlinear patterns in PV output data. A five-minute resolution dataset, including actual power output, solar irradiance, and module temperature, was collected throughout March 2025 for model training, with validation performed using independent data from April. The developed LSTM model achieved a mean absolute error (MAE) of 42.8 kW (approximately 4–6% of maximum plant capacity) and a coefficient of determination (R²) of 0.84 during active hours (05:00–19:00) on the validation dataset. These findings indicate that the model performs well not only on the training data, but also maintains strong generalization to unfamiliar data. The proposed approach enables reliable real-time power prediction, supporting applications such as energy forecasting, inverter control, dispatch planning, and anomaly detection in PV systems. This work provides a practical and scalable solution for improving the adaptability and integration of solar power plants in dynamic tropical environments, contributing to the advancement of AI-driven sustainable energy systems.

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