E-Journal Politeknik Negeri Cilacap
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An Intelligent System for Light and Air Conditioner Control Using YOLOv8
Get PDFHigh energy consumption in classrooms is a significant concern, often resulting from inefficient lighting and air conditioning systems. Specifically, the problem lies in the lack of automated control mechanisms that adjust energy use based on real-time occupancy data. This study aims to develop and evaluate a system that employs a camera integrated with the YOLOv8 algorithm to detect human presence and optimize energy usage by controlling lights and air conditioning. The system\u27s performance was assessed in three different classroom environments: two large and one small. The system\u27s accuracy for occupancy detection varied from 13.64% to 100%, depending on lighting conditions and room size. Light control accuracy was highest in the classrooms with consistent lighting, reaching 99.77%. Air conditioning control achieved perfect accuracy of 100% in the classroom with a SHARP brand AC, with a maximum remote-control range of 7 meters. These findings indicate that the system\u27s performance is influenced by lighting conditions and room size, with smaller rooms showing better results. The system demonstrates promising potential for reducing energy consumption in classroom settings, thereby contributing to more sustainable energy practices
The Influence of the Tiktok Application on Cyberbullying Behavior : Case Study: Students of SMP Negeri 5 Depok
Get PDFCyberbullying is threatening, insulting, or intimidating behavior carried out through online media. This cyberbullying behavior is vulnerable to being carried out or felt by teenagers who are still easily instigated by bad actions around them. Therefore, this study aims to determine what effects the TikTok application has on cyberbullying behavior in adolescents and to find out the causes and handling solutions for cyberbullying behavior. The research was conducted using the Technology Acceptance Model (TAM) method and the descriptive quantitative method. The research was conducted from June 11 to June 21, 2024, with a sample size of 91 students determined using the proportionate stratified random sampling method. The results of hypothesis testing with the t-test state that perceived usefulness has no effect on real conditions of use, then perceived ease of use and behavior to continue using positively affect real conditions of use. Meanwhile, attitude towards use harms the real conditions of use. The f-test states that all variables have a simultaneous effect. Meanwhile, the R-Square test states that perceived usefulness, perceived ease of use, attitude towards use, and behavior to continue using contribute 62.4% to the real conditions of us
Pengaruh Tiga Jenis Garam Terhadap Kualitas Mutu Sensori, Kadar Air dan pH Ikan Asin Layang (Decapterus sp.): Pengaruh Tiga Jenis Garam Terhadap Kualitas Mutu Sensori, Kadar Air dan pH Ikan Asin Layang (Decapterus sp.)
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Ikan merupakan salah satu komoditi hewani yang memiliki kandungan gizi yang lengkap seperti; protein, karbohidrat, lemak, vitamin dan mineral, yang sangat dibutuhkan dalam tubuh manusia, namun ikan mudah mengalami pembusukan (perishable food). Agar ikan sampai ke tangan konsumen dalam keadaan baik diperlukan upaya untuk menghambat peroses pembusukan dengan cara pengawetan. Salah satunya dengan menggunakan garam.Tujuan penelitian ini adalah untuk mengetahui pengaruh tiga jenis garam berbeda terhadap kadar air dan mutu sensori ikan asin layang. Penelitian ini menggunakan metode RAK (rancangan acak kelompok) untuk uji sensori, RAL (rancangan acak lengkap) untuk uji kadar air, pH dan rendemen untuk menentukan berat awal dan berat akhir pada tiap perlakuan. Perlakuan yang di terapkan adalah pengaruh kosentrasi berbagai jenis garam pada pembuatan ikan asin kering yang terdiri atas lima taraf masing – masing yaitu ikan asin dengan penambahan tiga jenis garam sebanyak 15 % dari berat ikan. Adapun perlakuan dalam penelitian ini yaitu P1= garam halus, P2= garam garapan, P3= garam batu, yang di ulangi sebanyak lima kali. Berdasarkan hasil penelitian, maka dapat ditarik kesimpulan bahwa perlakuan tiga jenis garam berpengaruh terhadap hasil uji kadar air, uji pH dan hasil uji sensori penampakan. Sedangkan hasil uji sensori aroma, tekstur, tingkat kesukaan dan jamur tidak memberikan pengaruh yang nyata. Ikan layang asin yang terbaik terdapat pada perlakuan P3 karena memiliki nilai rata-rata sensori tertinggi dibandingkan perlakuan lainnya dan memiliki nilai kadar air dan pH yang telah memenuhi Standar Nasional Indonesia (SNI).
Kata kunci: Garam, Ikan layang asin, Kadar air, Kadar pH, Mutu sensori
 
Analisis Pembentukan Endapan pada Transportasi Gas Alam Pengaruh Tekanan, Temperatur, dan pH.
Get PDFNatural gas production areas and processing sites for use in the residential and industrial sectors are separated by a long distance. Contaminants such as H2S and CO2 are present when natural gas is transported. The reaction process that occurs in the pipe walls will experience a reduction in material. A process that occurs repeatedly over a long time will form deposits at the bottom of the pipe. This research investigates the sludge produced by the pigging process every month. The sludge characters are identified using SEM and XRD testing, while the condensate is examined using XRF testing. The XRF results show that the presence of Cl- in the condensate increases the anodic reaction in the corrosion process. Condensate has a pH of 5-6, which will cause corrosion around internal piping. Sludge produces Fe3O4, FeS, and FeCO3. Fe3O4 is more dominant than FeS and FeCO3. More FeS is produced by % mol H2S than by % CO2. Because of the existing FeS, the particles formed are irregular
Biokonversi Sampah Organik Kulit Pisang Menggunakan Larva Black Soldier Fly (BSF)
Get PDFWaste is goods considered unused and thrown away by the previous owner/user, but under certain conditions and processing the waste can still be used. An example is organic waste, organic waste is waste that can undergo weathering or what is usually called decomposition and break down into smaller, odorless materials. This research aims to analyze the effect of feeding rate on larval nutritional quality, residue yield quality and banana peel waste reduction index using the bioconversion method. Bioconversion is a waste processing process that involves microorganisms to convert organic waste into products that have market value. This research used Black Soldier Fly (BSF) larvae as a bioconverter for selected organic waste, namely banana peel waste. The variables used in this study consisted of variations in the number of different feeding rates with 4 variations, namely 40, 60, 80 and 100 mg/larva/day for 15 days, where each variation was given 3 containers and each container contained 2000 BSF larvae. The research results that will be obtained are environmental conditions during the bioconversion process and the value of the waste reduction index or WRI
Pengujian Kuat Tarik dan Kekerasan pada Alkyd Resin dari Kombinasi Palm Fatty Acid Distillate dan Urea Formaldehid Terbutilasi
Get PDFThe utilization of polymers, particularly alkyd resin, across various industries is increasing due to its superior characteristics such as flexibility and strength. Palm Fatty Acid Distillate (PFAD) and tert-butylated urea formaldehyde are two commonly used raw materials in the production of these polymers. This study aims to evaluate the mechanical properties, particularly tensile strength and hardness, of coating materials made from a combination of PFAD-based alkyd resin and tert-butylated urea-formaldehyde. The synthesis of the resins carried out with various material composition and involves an oxalic acid as catalyst, followed by testing the tensile strength and hardness of the coating material.. The results indicate that variations in the composition of materials and the use of catalysts affect the mechanical characteristics of the materials. Changes in material composition may result in variations in tensile strength, while the use of catalysts influences the hardness of the materials. An increase in the amount of tert-butylated urea formaldehyde leads to an increase in tensile strength in some compositions, but in certain compositions, weaknesses in the bond between alkyd resin and tert-butylated urea formaldehyde result in a decrease in tensile strength. For instance, at a mole ratio of tert-butylated urea formaldehyde to butanol of 1:1, the highest tensile strength obtained was 50 MPa, while at a ratio of 2:1, the tensile strength decreased to 40 MPa.Penggunaan polimer, khususnya alkyd resin dalam berbagai industri semakin meningkat karena karakteristik unggulnya seperti fleksibilitas dan kekuatan. Palm Fatty Acid Distillate (PFAD) dan urea formaldehid terbutilasi adalah dua bahan baku yang umum digunakan dalam pembuatan polimer tersebut. Penelitian ini bertujuan untuk mengevaluasi sifat mekanis, terutama kuat tarik dan kekerasan dari bahan pelapis yang terbuat dari campuran alkyd resin berbasis PFAD dan urea-formaldehid terbutilasi yang ramah lingkungan. Pembuatan resin dilakukan dengan berbagai variasi komposisi bahan dan melibatkan penggunaan katalis asam oksalat, serta diikuti dengan pengujian kuat tarik dan kekerasan bahan pelapis tersebut. Hasil penelitian menunjukkan bahwa variasi dalam komposisi bahan dan penggunaan katalis mempengaruhi karakteristik mekanis material tersebut. Perubahan komposisi bahan dapat menyebabkan variasi dalam kekuatan tarik, sedangkan penggunaan katalis berpengaruh pada kekerasan material. Peningkatan jumlah urea formaldehid terbutilasi mengakibatkan peningkatan kuatan tarik pada beberapa komposisi, namun pada komposisi tertentu, kelemahan ikatan antara alkid resin dan urea formaldehid terbutilasi menyebabkan penurunan kuatan tarik. Sebagai contoh, pada rasio mol urea formaldehid terbutilasi: butanol sebesar 1:1, diperoleh hasil kuat tarik tertinggi sebesar 50 MPa, sedangkan pada rasio 2:1, hasil kuat tarik menurun menjadi 40 MPa
The Green Campus Building\u27s Rooftop Photovoltaic System Design Project
Get PDFUniversitas Jenderal Achmad Yani, whose major campus is in Cimahi City, is constructing a large-scale campus development, the size of which is directly proportionate to the quantity of energy consumed. This increase in electrical energy consumption can be minimized by utilizing environmentally friendly renewable energy sources to supply loads and reduce the use of existing energy from the grid (PT. PLN). This context supports a design proposal for the production of photovoltaic-based photovoltaic on the Universitas Jenderal Achmad Yani campus, particularly in two buildings with exceptional roof potential. In this paper, the modeling carried out aims to help supply renewable energy-based electrical energy. The design of PV on Grid Installation Engineering in Buildings at Universitas Jenderal Achmad Yani carried out in this paper includes PV placement layout, PV construction, and simulation using PVsyst. The rooftop-type grid-connected PV is modeled in the Faculty of Health Sciences and Technology (FHST) Building and the Rectorate Building, which are composed of PV panels, inverters, and other supporting components. Grid PV design and simulation modeling on the roofs of FITKES and Rectorate Buildings resulted in a total installable PV capacity of 420 kWp, an annual average Performance Ratio of 80.6%, and an average potential energy output of 702 MWh/year. This energy potential is undoubtedly proposed to fulfill future electricity needs.
Universitas Jenderal Achmad Yani yang terletak di Kota Cimahi, saat ini sedang dalam pembangunan kampus berskala besar dimana kegiatan masif ini akan berbanding lurus dengan besarnya konsumsi energi listrik yang digunakan. Kenaikan konsumsi energi listrik ini dapat diminimalisir dengan adanya pemanfaatan sumber energi terbarukan yang ramah lingkungan untuk menyuplai beban dan mengurangi penggunaan energi eksisting dari jaringan PT. PLN. Latar belakang tersebut mendorong suatu usulan desain pembuatan PLTS jenis berbasis fotovoltaik di kampus Universitas Jenderal Achmad Yani, khususnya di dua gedung yang memiliki potensi atap yang ideal. Dalam makalah ini, pemodelan yang dilakukan bertujuan untuk membantu suplai energi listrik berbasis energi terbarukan. Rancang Bangun Rekayasa Instalasi PV on Grid pada Gedung di Universitas Jenderal Achmad Yani yang dilakukan dalam makalah ini meliputi tata letak penempatan PV, konstruksi PV, dan Simulasi dengan menggunakan PVsyst. PLTS terhubung jaringan jenis atap dimodelkan di Gedung Fakultas Ilmu dan Teknologi Kesehatan (FITKES) dan Gedung Rektorat yang disusun atas panel PV, inverter, dan komponen pendukung lainnya. Pemodelan desain dan simulasi PV On Grid telah dilakukan di atap Gedung FITKES dan Rektorat dengan menghasilkan total kapasitas PV yang dapat diinstal sebesar 420 kWp, dengan hasil Performance Ratio rata - rata tahunan sebesar 80,6% dan memiliki potensi output energi rata-rata mencapai 702 MWh/Tahu
Upgrading Bahan Bakar Jumputan Padat (BBJP) Sebagai Co firing Sistem Tenaga Uap Melalui Thermal Drying dan Fermentasi
Get PDFThe waste sorting process produces organic and inorganic waste. It can be converted into Solid Recovered Fuel with the addition of a maximum of 20% plastic, which can be used for co-firing coal combustion in steam power systems. High humidity levels and the condition of organic waste with its various constituent components require drying and other treatments to increase the calorie content. Types of organic waste treatment, methods of drying, and decomposition of organic waste went through a fermentation process. The research aims to identify the effect of fermentation, addition of biomass, and plastic shreds of BBJP products on density, ash content, chlorine, and calorific value. Dimensions of organic waste powder at a level of 50 mesh and plastic shreds of 5-10 mesh are aimed at increasing the pellet/SRF bond. Mechanical testing data in the form of compression testing resulted in a level of resistance that exceeded pellet strength requirements and increased by 67%. Chlorine and sulfur levels are approaching the limit, but ash levels are still high. The calorific value of pellets in the fermented organic waste specimen treatment produces a higher calorific value compared to other treatments. Research on converting waste into co-firing fuel in solid form with the criteria for calorific value and physical properties that comply with the technical requirements for co-firing steam-powered systems can still be optimized to produce fuel with a higher calorie content. Reducing chlorine, sulfur, and ash levels is done for a low-carbon and environmentally friendly combustion process
Penerapan Multi-Palette Color untuk Pemberian Saran Pemilihan Warna Tema Desain Visual Vektor
Get PDFIn graphic design, many creative applications offer many templates. This design platform is suitable for creative designers and hobbyists such as marketers, bloggers, social media managers, etc. In a design workflow, users select a template and replace elements with their resources. Instead of creating one color palette for all elements, researchers extract multiple color palettes from each visual element in a graphic document and then combine them into a set of colors. Researchers design sample color schemes to complement color sets and we recommend colors that might be determined based on the color context in a multi-palette. Researchers conducted model training and created a color recommendation system for a collection of vector visual designs. The proposed color recommendation method is targeted to be a color prediction medium, as well as a color recommendation system on vector media. The results of this study are in the form of color recommendations for vector graphic design based on a multi-palette of visual elements.
 
Desain Pisau Pengurai dan Sistem Pengayak serta Uji Produk Mesin Pengolah Sabut Kelapa sebagai Bahan Mentah Komposit
Get PDFThis research aims to design a decomposing blade, sieving system, and test machine products. The method for completing coconut fiber processing machines consists of three stages, namely the design and production process stages, as well as machine product testing. This research produces the following data, namely the design of the untangling knife which is a combination of the functions of the coir untangling knife for random and woven results. Calculation of the equilibrium moment on the shaft obtained a value of ð‘…ð‘‰ðµ is 28.68 N and the reaction at point A was ð‘…ð‘‰ð´ is 28.32 N, with the diameter of the shaft used in the coconut fiber sieving machine transmission system being Ø28 mm. Fiber uniformity is obtained from twice decomposition processes, whereas the level of fiber/powder uniformity is influenced by the long sieving process time and also the high rotational speed of the sieve