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Dina Mariani
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Universitas Muhammadiyah Semarang FT-FMIPA Building, 7nd Floor. Department of Electrical Engineering Jl. Kedungmundu Raya No. 18, Kota Semarang, Prov. Jawa Tengah, Indonesia 50273 Phone: 085299398663 Email: mediaelektrika@unimus.ac.id
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MEDIA ELEKTRIKA
Published by Universitas Muhammadiyah Semarang
ISSN : 19797451     EISSN : 2579972X     DOI : 10.26714/me.14.2.2021.62-75
Core Subject : Science, Engineering,
Control & Systems Engineering Electrical & Electronics Engineering Energy Engineering
Media Elektrika is an electrical engineering journal that gives concerns on sciences related to electrical engineering. It includes the following fields: Electrical power engineering Electronics Telecommunication Control Informatics and computer technology
Arjuna Subject : Teknik (semua kategori) - Teknik Listrik dan Elektro
Articles 5 Documents
 1 
Search results for , issue "Vol 7, No 2 (2014): MEDIA ELEKTRIKA" : 5 Documents clear
PENGEMBANGAN MODEL CUSTOMER RELATIONSHIP MANAGEMENT MENGGUNAKAN TEKNOLOGI SMS GUNA MENINGKATKAN KEPATUHAN AKSEPTOR KB Trismianto Asmo Sutrisno; Surati Ningsih
MEDIA ELEKTRIKA Vol 7, No 2 (2014): MEDIA ELEKTRIKA
Publisher : PSTE UNIMUS

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (311.941 KB) | DOI: 10.26714/me.7.2.2014.%p

Abstract

Penelitian ini bertujuan untuk mengembangkan model aplikasi dengan pendekatan Customer Relationship Management (CRM) menggunakan teknologi Short Message Service (SMS) guna meningkatkan kepatuhan akseptor Keluarga Berencana (KB) khususnya akseptor KB suntik untuk datang berkunjung sesuai dengan jadwal. Penelitian ini menerapkan pendekatan menggunakan metode System Development Life Cycle (SDLC) atau Daur Hidup Pengembangan Sistem dengan model Waterfall. Sedangkan pengembangan perangkat lunak yang berupa model pembelajaran dengan visualisasi ini dilaksanakan dengan tahapan:  1) analisis kebutuhan perangkat lunak, 2) desain, 3) pembuatan kode program, 4) pengujian dan 5) luaran penelitian berupa sebuah sistem model aplikasi dengan pendekatan CRM menggunakan teknologi SMS dan draft publikasi ilmiah. Langkah penelitian akan dilakukan pengumpulan data dengan metode survey dengan cara observasi lapangan dan wawancara kepada narasumber serta studi pustaka. Observasi dan wawancara dilakukan guna memperoleh data yang akurat tentang kontrasepsi KB khususnya kontrasepsi suntik, penetapan jadwal kunjungan ulang serta informasi pendukung lainnya. Selanjutnya mengolah data-data yang telah diperoleh untuk diolah menggunakan pendekatan SDLC dengan model Waterfall. Terakhir melakukan kuisioner dengan tipe tertruktur untuk memperoleh data sejauh mana manfaat yang dirasakan oleh akseptor KB dengan adanya model aplikasi berbasis CRM dalam meningkatkan kepatuhan akseptor KB tersebut dalam teratur melakukan kunjungan pemeriksaan KB. Kata Kunci: Akseptor, Customer Relationship Management, CRM, KB, SMS  
EFEKTIFITAS PEMANFAATAN PASIR PANTAI BERKALSIUM TINGGI SEBAGAI MATERIAL PENGISI BAHAN ISOLASI RESIN EPOKSI UNTUK ISOLATOR LISTRIK M. Toni Prasetyo
MEDIA ELEKTRIKA Vol 7, No 2 (2014): MEDIA ELEKTRIKA
Publisher : PSTE UNIMUS

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (890.894 KB) | DOI: 10.26714/me.7.2.2014.%p

Abstract

Insulation materials that commonly used in air insulation, which, is operated at high voltage, are the porcelain, glass, and polymer materials. One of the insulating polymer materials that are used is epoxy resin because it has several advantages compared to that. However, this insulation material has a degradation of the surface due to environmental and cause insulation coated with dirt and chemicals in the long time. Material that was used in this research was epoxy resin polymer isolation using of comparison values (base material diglycidyl ether of bisphenol-A: hardener material metaphenylene diamine) were 1:1, with the increase of silane and high calcium coastal sand as filler by the value of 10%, 20%, 30%, 40%, and 50%. Research was done in laboratory according to standard IEC 587: 1984. In this study, the effect of variation in stoichiometry to the hydrophobic contact angle value, leakage current waveforms, and surface degradation caused by erosion and tracking processes and tracking time were analyzed. From the results of the research, it was obtained that the epoxy resin that was used in this research are categorized as hydrofobik and partially wetted. The increase concentration of silane dan high calcium coastal sand as filler caused the increase in contact angle which meant the increase in surface insulation resistance, so that leakage currents flew on the surface not easily and slow down the aging or the degradation decreasing on the surface of insulating material. Concentration value of filler that had the optimal performance of the tracking process and erosion was 40%. Keywords : Angle of contact, epoxy resin, hidropobik, leaky current, materials filler
PROFIL SURJA HUBUNG KARENA PROSES ENERGIZED PADA SALURAN TRANSMISI 500 KV - Yuniarto
MEDIA ELEKTRIKA Vol 7, No 2 (2014): MEDIA ELEKTRIKA
Publisher : PSTE UNIMUS

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (382.95 KB) | DOI: 10.26714/me.7.2.2014.%p

Abstract

Transient over voltage that happened because switching surge have to be paid attention to don't cause the damage equipments of insulation coordination system. This research aim to perceive the transient over voltage at the end of 500 kv transmission line caused energized process by using EMTP (Electromagnetic Transients Program) as toll to simulate the energized process. Data for this research was taken from 500 kv transmission line Ungaran-Pedan. From this research was expected can become a reference for power company in planning insulation coordination at transmission line. Result of research show that transient over voltage at the end of 500 kv transmission line caused energized process reach more or less twice its nominal voltage Keywords : energized, karateristik, transient over voltage, EMTP
PEMANFAATAN SAMPAH SAYUR PASAR DALAM PRODUKSI LISTRIK MELALUI MICROBIAL FUEL CELLS (UTILIZATION OF MARKET VEGETABLE WASTE IN ELECTRICITY PRODUCTION THROUGH MICROBIAL FUEL CELLS) Muhamad Imaduddin; - Hermawan; - Hadiyanto
MEDIA ELEKTRIKA Vol 7, No 2 (2014): MEDIA ELEKTRIKA
Publisher : PSTE UNIMUS

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (495.617 KB) | DOI: 10.26714/me.7.2.2014.%p

Abstract

The presence of organic market vegetable waste is so abundant. One of utilization of vegetable market waste is processed into compost. However, compost has difficulties in marketing so it is only used on a small scale and it gives impact to the environment such as acidification and eutrophication. On the other hand, the threat of energy and fuel-crisis makes activities related to renewable energy into something urgent to be done. One of the renewable energy alternatives is Microbial Fuel Cells (MFCs). MFCs are bioelectrochemical system spontaneously converting biomass into electricity through metabolic activity of microorganisms. The purpose of study is to apply MFCs as an application of voltaic cells in producing electricity using slurry phase of vegetable waste as substrate. Variations performed on the slurry phase comparison: water are 1: 2; 1: 1 and 2: 1, and the addition of EM4. Operations were conducted for 21 days. Production of the greatest voltage is at R1+ reactor (1:2 with addition of EM4) and reached 1180 mV. An electric current is 5.1 μA, and the electric power is 6.02 Mwatt, and the power density is 462.92 mWatt/m2. The presence of water in MFCs role in the mechanism of vegetable waste degradation. The tendency of increase in the electrical energy at the beginning of the operation of the reactor showed an increase in cellular synthesis of microorganisms. Declining electric energy is influenced of pH as microorganisms living place and the formation process of attached media at the electrode. Keywords:  Vegetable Market Waste, Electricity, Microbial Fuel Cells.
JARINGAN SYARAF TIRUAN SEBAGAI METODE PERAMALAN BEBAN LISTRIK HARIAN DI PT. PISMATEX PEKALONGAN M. Subhan Maulidin; Luqman Assaffat
MEDIA ELEKTRIKA Vol 7, No 2 (2014): MEDIA ELEKTRIKA
Publisher : PSTE UNIMUS

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (632.322 KB) | DOI: 10.26714/me.7.2.2014.%p

Abstract

ABSTRACT Load electricity forecasting of industry can provide an information support to the Top Management and other stakeholders in terms of estimating and monitoring the power requirements and effort in providing it. With the artificial neural network method as an electrical load forecasting method using the short-term power load forecasting in the industrial sector, is expected load forecasting in this study had an average error is small. Research on the daily electricity load forecasting in PT. Pismatex Pekalongan using neural networks with daily electricity load data per hour for one week study. The Result of this study is MAPE of 7.23%. Keywords: Short-Term Forecasting, Electricity Charges, Neural Network

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