JURNAL POLITEKNIK NEGERI SRIWIJAYA
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Analisis Rasio Likuiditas dan Solvabilitas untuk Menilai Kinerja Keuangan PT Indofarma Tbk Periode 2019-2023
Full text linkPenelitian ditujukan untuk menilai kinerja keuangan PT Indofarma Tbk selama periode 2019–2023 dengan memanfaatkan rasio likuiditas dan solvabilitas sebagai indikator kinerja keuangan perusahaan. Rasio likuiditas yang dianalisis mencakup cash ratio dan current ratio, sedangkan rasio solvabilitas yang dianalisis adalah rasio total modal sendiri terhadap total aset. Analisis dilakukan atas pedoman Surat Keputusan Menteri BUMN No. Kep-100/MBU/2002 dengan pendekatan deskriptif kuantitatif, menggunakan data sekunder dari laporan keuangan tahunan perusahaan. Hasil menunjukkan bahwa likuiditas perusahaan tergolong kurang sehat karena nilai cash ratio dan current ratio tidak memenuhi standar yang ditetapkan selama lima tahun terakhir. Di sisi lain, dari perspektif solvabilitas, perusahaan juga menunjukkan kondisi yang tidak sehat karena rasio total modal sendiri terhadap total aset hanya mencapai standar di 2019. Temuan ini mengindikasikan adanya masalah dalam pengelolaan arus kas, modal kerja, dan struktur permodalan yang perlu segera diperbaiki melalui strategi keuangan yang lebih efektif
Characterization Product of Bio-char and Bio-oil from Pyrolysis of Castor Bean and Rubber Seed Shell
Full text linkIndonesia has abundant biomass resources, agricultural waste such as rubber seed shells and castor beans are one of them. One way to process biomass into alternative energy is by pyrolysis method. Pyrolysis is a process in which chemical compounds are broken or the chemical structure of organic matter is broken through a heating process in a reactor without oxygen or with little oxygen. Most pyrolysis uses only one raw material. In this case, to determine the optimal pyrolysis product, observations were made on variations in operating temperature and variations in the ratio of the two materials with operating temperatures of 350°C and 250°C variations in raw material composition (100:0, 75:25, 50:50, 25:75, 0:100), with the addition of natural zeolite catalyst. Product analysis includes % yield of pyrolysis products (bio-char, bio-oil, syngas), proximate analysis of bio-char, calorific value, flash point and CH4 content contained in syngas. The results of this study show the influence of operating temperature variations where the operating temperature of 350°C is most optimal in obtaining % yield of bio-oil and syngas, but for the most optimal operating temperature in obtaining biochar yield is at 250°
Enhanced Green Diesel Production from Hydrotreating of Used Cooking Oil via In-Situ Hydrogen Generated from Ethanol
Full text linkUsed cooking oil has great potential as a raw material in the production of renewable fuels, particularly green diesel. This study aims to increase the yield of green diesel from used cooking oil through an in-situ ethanol hydrotreating process using a NiMo/γ-Al₂O₃ catalyst. This process utilizes ethanol as an internal hydrogen donor (in-situ) to replace the need for external hydrogen in the hydrodeoxygenation process. The variables studied include ethanol concentration (5%, 10%, and 15%) and reactor temperature (340°C, 370°C, 400°C, 430°C, and 460°C). Product characteristics were analyzed through density tests, kinematic viscosity, flash point, cetane number, and GC-MS. The results showed that the optimal conditions were achieved at an ethanol concentration of 15% and a temperature of 460°C, yielding 60.025% green diesel, a density of 763.197 kg/m³, a viscosity of 2.682 mm²/s, and a flash point of 61°C. However, the cetane number obtained was still below the minimum SNI standard of 70. This process demonstrates significant potential for converting oil waste into environmentally friendly fuel, while also supporting the reduction of dependence on fossil fuels
Digitalisasi Perpustakaan SMA Al – Amalul Khair Palembang Melalui Implementasi Aplikasi SLIMS dan Infrastruktur Jaringan
Full text linkPerpustakaan memainkan peran penting dalam pengembangan pendidikan, menyediakan sumber daya informasi yang diperlukan untuk mendukung proses belajar mengajar. Namun, masih banyak perpustakaan di Indonesia yang mengelola koleksi dan peminjaman buku secara konvensional, yang mengakibatkan proses menjadi kurang efisien dan kurangnya aksesibilitas informasi bagi pengguna. SMA Al – Amalul Khair Palembang adalah salah satu institusi pendidikan yang menghadapi tantangan dalam mengelola perpustakaan mereka secara optimal. Oleh karena itu, kegiatan pengabdian kepada masyarakat ini bertujuan untuk melakukan digitalisasi perpustakaan SMA Al-Amalul Khair dengan mengimplementasikan Sistem Informasi Manajemen Perpustakaan (SLIMS) serta memperkuat infrastruktur jaringan yang ada. Tahapan kegiatan ini meliputi instalasi perangkat keras dan perangkat lunak yang diperlukan untuk SLIMS, pelatihan kepada Staf perpustakaan untuk mengoperasikan sistem baru, serta digitalisasi koleksi buku yang ada. Urgensi dari kegiatan ini adalah untuk meningkatkan efisiensi dan transparansi layanan perpustakaan, mempermudah proses peminjaman, serta menyediakan akses informasi yang lebih cepat dan mudah bagi pengguna. Hasil yang diperoleh dari pengabdian ini menunjukkan bahwa implementasi SLIMS dan penguatan infrastruktur jaringan berhasil meningkatkan kualitas layanan perpustakaan, mengurangi waktu yang diperlukan untuk peminjaman, serta mempercepat proses pencarian dan peminjaman buku. Kegiatan ini memberikan dampak positif tidak hanya dalam aspek sosial dan pendidikan, tetapi juga dalam pengelolaan sumber daya perpustakaan yang lebih terorganisir dan efisie
PENGARUH FREE CASH FLOW, KEBIJAKAN DIVIDEN, DAN ESG TERHADAP RETURN SAHAM
Full text linkThe purpose of this study is to empirically prove the effect Free Cash Flow, Dividend Policy, and ESG on Stock Return. This is a quantitative study with a population consisting of all companies on the IDX LQ45 index for the period 2019-2023. Sampling was conducted using a nonprobability sampling approach with purposive sampling. The data was processed using E-views. The results of this study show that simultaneously, free cash flow, dividend policy, and ESG have a significant positive effect on stock returns. Partially, free cash flow has a significant positive effect on stock returns, while dividend policy and ESG do not have a significant effect on stock returns.
Keywords: Free Cash Flow, Dividend Policy, ESG, Stock Retur
ANALISIS BREAK EVEN POINT (BEP) SEBAGAI ALAT PERENCANAAN LABA JANGKA PENDEK PADA UMKM KCHARIS JAYA PALEMBANG
Full text linkThis final report aims to analyse the application of the Break Even Point (BEP) method as a short-term profit planning at UMKM Kcharis Jaya Palembang. The main problem of this MSME is that there is no detailed classification of fixed costs and variable costs and no break even point analysis has been carried out as a basis for making useful decisions on sales and profit planning, especially short-term profits. The data collection methods of this final report are observation, interviews, documents and triangulation. The analysis focused on the classification of fixed costs, variable costs and sales to calculate BEP, Margin of Safety (MoS), and profit targets for 2022, 2023 and 2024. The results show that the application of BEP helps MSMEs to improve cost efficiency, knowing the minimum sales limit to avoid losses. The Margin of Safety (MoS) calculation shows the level of sales security, develops the right sales strategy and strengthens the basis for decision making in obtaining optimal short-term profits. Meanwhile, the profit target provides a reference for the sales volume to achieve the expected profit.
Keywords: Break Even Point, Margin of Safety, Profit Target, Short Term Profit Plannin
PERANCANGAN SISTEM SMART GRID BERBASIS INTERNET OF THINGS UNTUK PENGELOLAAN LISTRIK YANG EFISIEN
Full text linkThe use of energy in Indonesia is influenced by various factors, including history, economics, and geography, with a high dependence on fossil fuels despite declining oil reserves. The transition to clean energy sources, particularly solar energy through solar panels, has become a primary focus. Solar panels, which use semiconductor-based photovoltaic cells, serve to convert sunlight into electrical energy. The need for sustainable electricity drives the implementation of smart grid systems based on IoT technology, which enhances the efficiency and reliability of electricity distribution. This research explores the use of solar panels as an alternative power source by assessing the power output and efficiency of the system. The application of IoT allows for better automation and energy management. The research methods include needs analysis, system design, and the implementation of IoT technology for real-time monitoring. The results indicate that IoT-based smart grid systems can improve electricity management efficiently and sustainably.Penggunaan energi di Indonesia dipengaruhi oleh berbagai faktor, termasuk sejarah, ekonomi, dan geografi, dengan ketergantungan yang tinggi pada bahan bakar fosil meskipun cadangan minyak menurun. Transisi menuju sumber energi bersih, terutama energi surya melalui panel surya, menjadi fokus utama. Panel surya, yang menggunakan sel photovoltaic berbahan semikonduktor, berfungsi mengubah sinar matahari menjadi energi listrik. Kebutuhan akan listrik berkelanjutan mendorong penerapan sistem smart grid berbasis teknologi IoT, yang meningkatkan efisiensi dan keandalan distribusi energi listrik. Penelitian ini mengeksplorasi penggunaan panel surya sebagai sumber listrik alternatif dengan menilai output daya dan efisiensi sistem. Penerapan IoT memungkinkan otomatisasi dan pengelolaan energi yang lebih baik. Metode penelitian meliputi analisis kebutuhan, perancangan sistem, dan implementasi teknologi IoT untuk pemantauan real-time. Hasil penelitian menunjukkan bahwa sistem smart grid berbasis IoT dapat meningkatkan pengelolaan listrik secara efisien dan berkelanjutan
PEMANTAUAN KEKERUHAN DAN NILAI TOTAL DISSOLVED SOLIDS KUALITAS AIR AKUARIUM MENGGUNAKAN METODE FUZZY LOGIC MAMDANI
Full text linkThe quality of aquarium water is crucial for the health of fish and other organisms. Turbidity and Total Dissolved Solids (TDS) are two main factors affecting water quality. This study aims to develop an automatic system to control aquarium water quality using the Mamdani Fuzzy Logic method. This method was chosen for its ability to handle uncertain or incomplete data. We defined fuzzy membership functions for turbidity (clear, murky, very murky) and TDS (low, medium, high), and created rules to control the pump status (On/Off). Using the centroid defuzzification method, the system provides clear decisions for regulating the pump. The results show that this system is effective in controlling the aquarium pump based on turbidity and TDS, thus improving water quality and reducing sudden changes in these parameters.
Tuliskan abstrak Anda dalam bahasa Inggris (Maksimal 200 kata, font Times New Roman ukuran 10, rata kiri kanan/Justify)Kualitas air di akuarium sangat penting untuk kesehatan ikan dan organisme lainnya. Kekeruhan dan Total Dissolved Solids (TDS) adalah dua faktor utama yang mempengaruhi kualitas air. Penelitian ini bertujuan mengembangkan sistem otomatis untuk mengontrol kualitas air akuarium dengan menggunakan metode Fuzzy Logic Mamdani. Metode ini dipilih karena kemampuannya dalam menangani data yang tidak pasti atau tidak lengkap. Kami mendefinisikan fungsi keanggotaan fuzzy untuk kekeruhan (jernih, keruh, sangat keruh) dan TDS (rendah, sedang, tinggi), serta membuat aturan untuk mengontrol status pompa (On/Off). Dengan metode defuzzifikasi centroid, sistem memberikan keputusan yang jelas untuk mengatur pompa. Hasil penelitian menunjukkan bahwa sistem ini efektif dalam mengontrol pompa akuarium berdasarkan kekeruhan dan TDS, sehingga meningkatkan kualitas air dan mengurangi perubahan mendadak dalam parameter tersebut
Sistem Monitoring Dan Prediksi Konsumsi Listrik Menggunakan Metode Long Short-Term Memory (LSTM) Berbasis Internet Of Things (IOT)
Full text linkThe development of Internet of Things (IoT) technology enables real-time and efficient measurement and monitoring of electricity consumption. This study aims to design and develop an IoT-based electricity consumption monitoring and control system equipped with a prediction feature using the Long Short-Term Memory (LSTM) algorithm. The system uses the PZEM-004T sensor to measure electrical parameters such as voltage, current, power, and energy, which are then transmitted via the MQTT protocol using an ESP32 microcontroller. Electricity consumption data is displayed on a mobile application and stored in a Supabase database. In addition to monitoring features, the system also provides control over electrical devices through a relay, as well as user-configurable scheduling and consumption limit settings. The electricity consumption prediction feature is developed to provide estimated monthly bills or estimated time until prepaid electricity tokens run out, based on historical data. The implementation results show that the system is capable of performing real-time monitoring and control, as well as providing informative visualizations of consumption history in graphical form. This system is expected to help users manage their power consumption more wisely and efficiently
PERANCANGAN JEMBATAN AIR MERANJAT – BATAS KOTA KAYU AGUNG KABUPATEN OGAN ILIR SUMATERA SELATAN
Full text linkThe Air Meranjat Bridge - Batas Kota Kayu Agung, Ogan Ilir Regency, South Sumatera connects the Indralaya - Kayu Agung cross Sumatra road. The design of the Air Meranjat bridge includes the upper structure and lower structure using the Practical Guide to Bridge Technical Planning method 2021. From the design results obtained the dimensions of the prestressed girder 1.7 m x 0.7 m and a length of 40.6 m, Pillars with dimensions of 3.929 m x 4 m and a length of 11 m, Abutment with dimensions of 6.35 m x 5 m and a length of 10.6 m, Piles used diameter 0.5 m 24 m depth. The cost for the construction of the Air Meranjat Bridge is Rp.10.555.155.490,000 with an implementation time of 202 days.Jembatan Air Meranjat – Batas Kota Kayu Agung Kabupaten Ogan Ilir Sumatera Selatan menghubungkan jalan lintas Sumatera Indralaya – Kayu Agung. Perancangan jembatan Air Meranjat ini meliputi struktur atas dan struktur bawah dengan metode Panduan Praktis Perencanaan Teknis Jembatan Tahun 2021. Dari hasil perancangan diperoleh dimensi gelagar prategang 1,7 m x 0,7 m dan panjang 40,6 m, Pilar dengan dimensi 3,929 m x 4 m dan panjang 11 m, Abutment dengan dimensi 6,35 m x 5 m dan panjang 10,6 m, Tiang pancang yang digunakan diameter 0,5 m kedalaman 24 m. Biaya yang diperlukan pada pembangunan jembatan Air Meranjat ini sebesar Rp. 10.555.155.490,000 dengan lama waktu pelaksanaan 202 hari