E-Journal Politeknik Negeri Cilacap
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Steganografi Video Digital dengan Algoritma LSB (Least Significant Bit) dan Rijndael
Get PDFSteganography is the science and art of hiding information so that confidential information cannot be known by others, except the sender and receiver. This research is designed to create a steganography system on video with mp4 format. The message is inserted in one of the video frames, first encrypted with the Rijndael algorithm. The method of inserting messages in the video frame is the Least Significant Bit (LSB) method. Extraction of frames on video using ffmpeg software. Qualitative testing used to identify changes in video frames with human senses. Quantitative testing was carried out by testing six videos with different resolutions, while there were five inserted messages with varying Byte lengths. The frame that has been inserted with a message is measured for noise with the Peak Signal to Noise Ratio (PNSR). The test results show that the LSB method cannot be used for message insertion whose Byte size is greater than the capacity of the cover video. There is a change in image quality if the size of the inserted message bytes is getting bigger
Optimasi Parameter Gravitasi Shot Peening Terhadap Kekasaran, Kekerasan dan Struktur Mikro ST 45 dengan Metode Taguchi
Get PDFShot peening is a surface treatment method at low temperature by shooting steel balls that are continuously adjusted for pressure and speed until plastic deformation is produced. The optimal parameter of the shot peening process was tested with the taguchi distribution. The factors and levels used are processing time, shooting distance and air pressure used in the shot peening process. Observations were made by looking at changes in surface roughness, thickness reduction, hardness levels, wear and changes in the microstructure of ST 45 steel material. The greatest hardness of 240.39 HVN was obtained at 10 minutes, a distance of 10 cm and a pressure of 9 kg / cm². The results of the surface wear test with the smallest value of 0.00039 mm³ / kg.m were obtained at 5 minutes, a distance of 10 cm and a pressure of 7 kg / cm². The results of the microstructure test showed that the change in the grain size of the microstructure of the material became flatter and smaller, the gravity shot peening method improved the mechanical properties of the ST 45 material
Penentuan Karyawan Terbaik Home Industry Ramayana Menggunakan Metode Analytical Hierarchy Process (AHP)
Get PDFEmployees in the company are the main resources required to be able to provide the best service and optimal performance. The selection of the best employees in a company is very important because it will determine the company\u27s progress in the future. A home industry in East Kotawaringin Regency has 3 permanent employees. This Ramayana cracker business owner wants to know the best performance of his 3 employees, one of the effective ways in selecting employees is by implementing a decision support system and by using the Analytical Hierarchy Process (AHP) method, we make this research to help business owners to their problem is solved. This study aims to complete practical decision making and have alternative choices for decision-makers, in order to choose the best employees in their home industry. The results of this study are aimed at home industry business owners in order to find out the best employees in this Ramayana home industry business
Perbaikan Keandalan Sistem Distribusi
Get PDFEnergi listrik merupakan komoditi utama untuk menunjang kehidupan manusia di era digital saat ini. Penyaluran energi listrik dilakukan melalui pusat pembangkit besar di sejumlah lokasi. Sejak tiga dekade terakhir, terdapat banyak penelitian yang memfokuskan pada penggunaan DG untuk minimasi kerugian jarigan dan regulasi tegangan namun, sedikit yang memfokuskan kepada keandalan dari sistem jaringan distribusi energi listrik. Penelitian ini bertujuan untuk mengetahui dampak yang dihasilkan jika mengkoneksikan DG ke jaringan distribusi energi listrik. Data uji yang digunakan adalah system distribusi radial IEEE 33-bus. Algoritma PSO digunakan sebagai optimasi penentuan lokasi dan kapasitas dari DG. Hasil penelitian menunjukkan bahwa terdapat perbedaan system jaringan distribusi radial tanpa DG, dengan 1 DG dan 2 DG. Total rugi-rugi system distribus tanpa DG adalah 208,52 KW dan 334,38 KVAr, sedangkan 1 DG menghasilkan rugi-rugi 1,94% dari total rugi-rugi dan 2 DG menghasilkan 1,09% dari total rugirugi. Indicator keandalan system SAIDI tanpa DG yakni 4,7 jam/pelanggan.tahun dan mengalami perbaikan sebesar 27% dengan 2 DG. Sedangkan, inkator keandalan system SIAFI tanpa DG yakni 1,47 frekuensi/pelangggan.tahun mengalami perbaikan sebesar 4% dari dengan 2 DG. Sehingga dapat disimpulkan bahwa penambahan DG dengan algoritma optimasi PSO menunjukkan hasil berupa pengurangan rugi-rugi, perbaikan profil tegangan disetiap bus, serta perbaikan keandalan sistem distribusi
Penerapan Teknologi Budidaya Ikan Air Tawar Dengan Metode Maxiras dan Aquaponic (Studi Kasus: Kelompok Tani Ikan Desa Kalijaran)
Get PDFPlant cultivation in the village of Kalijaran focuses on rice plants and fish farming with ponds. Some weaknesses of the ground pool are the condition of the soil that is prone to leakage, the ground pool is also difficult to control predatory animals, water discharge as well as water pressure, especially during heavy rain. Community service activities are carried out by applying the method of maxiras, namely carrying out the preparation of tools and materials, installation, training, mentoring and evaluation which are expected to enable more varied plants cultivation and more optimal fishery products, for example using the Ras Maxi method during agricultural activities with the aquaponic method. The purpose of this activity is to be able to create a creative community to cultivate fish and at the same time grow plants using the Maxi Race method. The result of this activity is an increase in the knowledge and skills of fish farmer groups about aquaculture with the Ras Maxi method so that the community can be more economically independent and creative
Penerapan Metode Simpleks pada Usaha Dagang Bintang Tiurma
Get PDFBintang Tiruma Trade Business is a Trading Business (TB) that is engaged in trade, namely the production of furniture such as minimalist doors and panel doors. Along with business development accompanied by intense competition, many problems arise and also affect TB, one of which is related to the availability of raw materials. Available raw materials have a limited amount that affects the production process. In order to maintain the development of production, it takes several stages in order to allocate raw materials and increase profits. The combination of the simplex method in processing data and the use of POM-QM software for Windows 5.0 for data analysis can be used as a solution in solving this problem. The result is that this method can speed up and simplify the calculation in determining the maximum profit obtained from the sale of minimalist doors and panel doors made within 1 (one) week. In addition, this greatly helps Bintang Tiurma TB to overcome the constraints of the availability of raw materials
Analisis Jatuh Tegangan dan Rugi-rugi Akibat Pengaruh Penggunaan Distributed Generation Pada Sistem Distribusi Primer 20 KV
Get PDFSistem distribusi adalah sistem tenaga listrik yang menyalurkan energi listrik dari sisi pembangkitan sampai ke konsumen, dengan menggunakan jaringan tegangan menengah sampai dengan tegangan rendah. Akibat menempuh jarak yang cukup jauh dari Gardu Induk untuk bisa sampai ke konsumen, dan pada saat penyalurannya memerlukan arus yang cukup besar. Menyebabkan terjadinya penurunan kualitas aliran daya sehingga terjadi jatuh tegangan, dan terdapat rugi-rugi yang pada saat penyaluran energi listrik tersebut. Distributed Generation (DG) sendiri merupakan sistem pembangkitan energi listrik berdaya kecil yang dibangkitkan dekat dengan pusat-pusat beban, tentunya pengaruh dari pemasangan DG pada dekat pusat beban harus dapat meningkatkan kualitas penyaluran tenaga listrik. Penelitian ini bertujuan mendapatkan nilai analisis perbandingan interkoneksi penggunaan atau tanpa penggunaan DG guna menghasilkan kualitas daya energi listrik pada saluran, serta mendapatkan besar nilai rugi energi yang dinyatakan dalam bentuk rupiah. Hasil penelitian menunjukkan interkoneksi DG dengan studi kasus PLTMH Aek Silang, dan PLTMH Aek Sibundong menghasilkan nilai jatuh tegangan sebesar 365,5 V tanpa menggunakan DG, sebesar 5,3 V dan 268,07 V menggunakan DG. Nilai rugi-rugi aktif didapat sebesar 17,52 kW, 11.620,18 kW, dan 17.032 kW, sedangkan nilai rugi-rugi reaktif sebesar 2,36 kVAR, 1.579,65 kVAR, dan 2.338,73 kVAR. Untuk besar rugi rupiah didapatkan nilai sebesar Rp 19.860, Rp 100.863, dan Rp 120.723. Simpulan dari hasil analisis menunjukkan bahwa penggunaan DG pada penyulang dapat memperbaiki kualitas daya dari penyaluran tenaga listrik
Rancang Bangun Mesin Pemotong Pipa Dengan Pergerakan Torch Otomatis Untuk Optimasi Proses Plasma Cutting
Get PDFThe development of the industrial world that is increasingly making the production process in an industry or factory requires increasingly developing technology and materials and tools that are easy to obtain so that the production process can run smoothly. One component needed in the industrial world is a material in the form of a pipe. Some industries still do the pipe cutting process using oxy acetylene welding which still uses hand and saw saws. This is certainly not effective because the pipes have different size and thickness. To cut the pipe using oxy acetylene welding will produce less neat pieces because the process is still manual by hand and must rotate the pipe, so we need a tool to facilitate the cutting process. Pipe cutting machine using plasma cutting is a machine made to facilitate the pipe cutting process. The process of cutting pipes is cutting tools that move around to produce pieces of pipe. With this machine, it can help speed up students in the process of cutting pipes without having to rotate the pipe to be cut. The purpose of the skeletal design of the pipe cutting machine using plasma cutting is to count the elements of the machine, determine the frame of the machine, determine the design concept of the machine and make the design of the draw frame. In making this machine the author uses the design method approach of VDI 222, drawing software using Solidworks 2017 and working drawings using ISO standards. The results of the concept design evaluation decision are, the framework uses 40 x 40 x 3mm hollow iron with an estimated production time used is 15.32 hours or equal to 2 working days if it is done in 1 day for 8 hours. Then the bill of material in making the frame on this machine spent 53 parts. The best cutting results are obtained from cutting 8 mm thick pipes with a speed of 10 rpm. So from the planning, the framework on the pipe cutting machine using plasma cutting, can function properly. so we need a tool to facilitate the cutting process
Fabrikasi Tempat Sampah Pintar Dengan Pemilahan dan Pemadatan Otomatis
No full textSampah telah menjadi persoalan yang paling utama hingga saat ini. Pengelolaan sampah terutama sampah plastik, yang tidak optimal bisa menyebabkan pencemaran lingkungan dan juga penyusutan lahan. Pengelolaan sampah di Indonesia dilakukan dengan sistem end of pipe, sehingga terjadi penumpukan sampah di tiap lokasi pengumpulan. Tempat sampah pintar ini dibuat khusus untuk sampah plastik yang nanti akan dikompresi sehingga dihasilkan sampah dengan volume yang lebih kecil dan dapat mengurangi proses penyusutan lahan. Pada tempat sampah ini terdapat tiga sistem utama. Sistem pemilahan sampah, sistem pemantauan daya tampung tempat sampah, dan sistem pemanas sampah. Hasil dari Ketiga sistem tersebut adalah tempat sampah pintar dapat bekerja secara optimal dengan rata-rata error kurang dari 5 persen
Game Edukasi Pengenalan Negara-Negara ASEAN Untuk Siswa SMP Kelas VIII Berbasis Android
Get PDFTechnological developments are booming. Game or game use is particularly helpful in the learning process. At a time when materials are familiar with the countries of asean students will be more likely to get bored because the state map introduction, the capital and naturalness are only in the books, the need for a learning medium to be used by teachers so that students do not get bored quickly. The purpose of research is to make teachers easier in delivery of materials and easier students to study asean\u27s introduction materials. The educational game was developed using multimedia development life cycle, as the result of the MDLC method (multimedia development life cycle), a introduction to countries in the asean program that matches the 2013 curriculum. The survey of 30 respondents scored an average of 92.19%, thereby falls into a category strongly in favor of the "educational introduction to asean state for siosswa middle school vii for android based" to be adopted as an alternative mediu