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JURNAL TEKNOLOGI TECHNOSCIENTIA
Published by Institut Teknologi Nasional Yogyakarta
ISSN : 27148025     EISSN : 27148025     DOI : https://doi.org/10.34151/technoscientia
Core Subject : Science, Engineering,
Earth & Planetary Sciences Engineering
Focus and Scope JURNAL TEKNOLOGI TECHNOSCIENTIA sebagai wahana publikasi karya ilmiah/penelitian di bidang teknologi atau rekayasa, meliputi: 1. Teknik Kimia 2. Teknik Industri 3. Teknik Mesin 4. Teknik Elektro 5. Teknik Informatika 6. Teknik Geologi 7. Teknik Lingkungan
Arjuna Subject : Energi (semua kategori) - Energi (Lain-Lain)
Articles 16 Documents
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Search results for , issue "technoscientia vol 4 no 2 februari 2012" : 16 Documents clear
ANALISA CHROME DEPOSIT DAN HARDNESS PADA PROSES HARD CHROME DENGAN VARIASI ARUS UNTUK RODA GIGI SEPEDA MOTOR Basuki Widodo; Wahyu Panji Asmoro
JURNAL TEKNOLOGI TECHNOSCIENTIA Technoscientia Vol 4 No 2 Februari 2012
Publisher : Lembaga Penelitian & Pengabdian Kepada Masyarakat (LPPM), IST AKPRIND Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.34151/technoscientia.v4i2.125

Abstract

Most of common public equalizes term chrome metal bedding type cum all. When we call elektroplating which meraka intention is chrome. Chrome is metal bedding but in the application of his(its is applied in the form of solit like: mobil/motor, engine block awning, bumper and other aksesoris. Fundamental bedding applies nipple plating, that is layering metal with nipple base material this thing aim to get smooth equiamplitude surface and gleams. Just nipple doesn't make equiamplitude surface of metal arranged in layers gleams. After arranged in layers with chrome then equiamplitude surface of metal arranged in layers gleams glittering like at a mirror. In bedding of hard chrome it is important to know how big level of hardness to be gotten better bedding result, besides need to be known thickness of deposit so that can protect substance from friction with other substance. At this research done various current when bedding process of hard chrome. Current applied is 15 Amperes, 20 Amperes, 25 Amperes at temperature 450 C. Is expected with existence of various current can yield level of varying hardness and thickness, so that knowable influence various current at process chrome at gear product. From result of research it is got that ever greater of current given increasingly downwards level of the hardness. So do with the thickness is ever greater is current which in giving, increasingly the chrome layer thick.
KANTIN KEJUJURAN BERBASIS TEKNOLOGI INFORMASI Andayati, Dina
JURNAL TEKNOLOGI TECHNOSCIENTIA Technoscientia Vol 4 No 2 Februari 2012
Publisher : Lembaga Penelitian & Pengabdian Kepada Masyarakat (LPPM), IST AKPRIND Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.34151/technoscientia.v4i2.499

Abstract

Honesty cafeteria is now widely applied in schools, in order to educate students to learn about honesty. Honesty cafeteria formed upon the cooperation of Corruption Eradication Commission (KPK) and the AGO, in the framework of education as early as possible to students to be honest, to anticipate the act of corruption. Honesty cafeteria is a canteen that sells snacks and drinks. Unguarded honesty cafeteria, canteen available at the cash box, which is useful to accommodate the payment and when there is change, students take for change from inside the box. Honesty cafeteria-based information technology is one solution to minimize the dishonesty that occurs, because with honesty cafeteria system manually then there is still a lot of dishonesty. In honesty cafeteria manually box containing the money, opened freely by the students. While the use of information technology-based honesty cafeteria, the box containing the money could be locked because they do not need a refund.
MODEL INTEROPERABILITAS ANTAR APLIKASI E-GOVERNMENT Istiyanto, Jazi Eko; Sutanta, Edhy
JURNAL TEKNOLOGI TECHNOSCIENTIA Technoscientia Vol 4 No 2 Februari 2012
Publisher : Lembaga Penelitian & Pengabdian Kepada Masyarakat (LPPM), IST AKPRIND Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.34151/technoscientia.v4i2.501

Abstract

Interoperability between information systems is an urgent problem to be solved in the development of e-Gov in Indonesia. This is caused by the need for increasing the data multisectoral policy-making in order to solve problems involving data from the inter-related sectors. While the state government application in the current environment, are still largely sectoral, in isolation, can not communicate with each other, and heterogeneous. Interoperability between e-Gov applications become important things to be sought the solution to the problem of developing e-Gov in Indonesia are not protracted. This paper is a review of the literature reveals the development of e-Gov in Indonesia, the interoperability problems encountered, and how the model of interoperability between e-Gov built to implement a web services models.
PERANCANGAN MODEL PENGUKURAN KINERJA CORPORATE SOCIAL RESPONSIBILITY PADA PENGEMBANGAN BISNIS UKM PADA PT.YTL JAWA TIMUR Nurmianto, Eko; Wessiani, Naning Aranti; Munawaroh, Maidatul
JURNAL TEKNOLOGI TECHNOSCIENTIA Technoscientia Vol 4 No 2 Februari 2012
Publisher : Lembaga Penelitian & Pengabdian Kepada Masyarakat (LPPM), IST AKPRIND Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.34151/technoscientia.v4i2.504

Abstract

Sustainable CSR in SME business development within industry is as an important challenge which could not be postponed. Performance measurement method of Performance Prism used to measure the Performance of CSR on SME business development at PT.YTL Jawa Timur. Performance Prism is one of an integrated methods which consist of all aspects,i.e; stakeholder satisfaction, contribution, strategy, process and capability. Performance measurement design is also supported by several method such as Analytic Hierarchy Process (AHP), scoring system with Objective Matrix (OMAX) and Traffic Light System (TLS). The design of CSR Performance measurement in SME business development at PT YTL Jawa Timur with Performance Prism resulted in 37 key Performance indicator (KPI), among others 13 KPI on stakeholder community, 10 KPI on stakeholder KLUCIL, 8 KPI on stakeholder instructur and 6 KPI on stakeholder regulator. From the calculating of Performance measurement using OMAX represent that Performance of CSR in SME business development is 6.72 which means that CSR Performance on SME business development has not optimal yet.
SISTEM VIRUS BATCH SEDERHANA Fatkhiyah, Erfanti; Isa, Doddy Muhammad
JURNAL TEKNOLOGI TECHNOSCIENTIA Technoscientia Vol 4 No 2 Februari 2012
Publisher : Lembaga Penelitian & Pengabdian Kepada Masyarakat (LPPM), IST AKPRIND Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.34151/technoscientia.v4i2.506

Abstract

Virus growth is currently very rapid and the type of virus that has circulated is also very diverse. One of those is a batch virus, a virus that uses simple commands in DOS. Batch virus did not differ with other viruses, only the manufacturing process does not require advanced programming language. With just some command line, virus of this type can be a simple virus that are simply annoying, or a virus that is quite dangerous. The process of making batch virus is quite simple, just disable, enable, and disable the facility in the operating system, and copying files. Examples of making batch virus of file extension exe by displaying one of the icons. Examples of simple batch virus has been created and tested into the Windows operating system, it can be quite successful, and targeted attacks are mostly Windows registry, but did not rule out also to attack the existing files, eg file documents , pictures, etc., which can cause the files are unusable, disappear, and so forth.
PENGARUH WAKTU KONTAK DAN UKURAN ADSORBEN TERHADAP PEMURNIAN BIOETANOL DARI KULIT NANAS Setyawati, Harimbi; Rahman, Nanik Astuti; -, Solekah
JURNAL TEKNOLOGI TECHNOSCIENTIA Technoscientia Vol 4 No 2 Februari 2012
Publisher : Lembaga Penelitian & Pengabdian Kepada Masyarakat (LPPM), IST AKPRIND Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.34151/technoscientia.v4i2.508

Abstract

The use of food as an alternative feedstock fuels, bioethanol, can threaten food security if not done wisely in its management. To cope with that then developed the fermentation of food waste that still contain carbohydrates, in this study used pineapple rinds juice as raw material for bioethanol. Ethanol produced still contains a little ethanol, despite the rise of distilled ethanol does not increase levels of purification process that takes another alternative, namely adsorption. Adsorbent used is a synthetic zeolite. From the results showed that the adsorption process can be increased ethanol content.
PENJADWALAN PRODUKSI PADA SISTEM MANUFAKTUR REPETITIVE MAKE TO ORDER FLOW SHOP MELALUI PENDEKATAN THEORY OF CONSTRAINTS Sodikin, Imam; Mashuri, Aang
JURNAL TEKNOLOGI TECHNOSCIENTIA Technoscientia Vol 4 No 2 Februari 2012
Publisher : Lembaga Penelitian & Pengabdian Kepada Masyarakat (LPPM), IST AKPRIND Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.34151/technoscientia.v4i2.510

Abstract

PT. Jaya Pulau Bintan, Bangka is a company that produces rubber in the form of semi-finished materials. Companies experiencing difficulties in meeting consumer demand is continuous, because the rubber product manufacturing process is very complicated and time consuming. The research method used in addressing the problems the company is the method of scheduling a flow shop with the approach of theory of constraint in repetitive manufacturing systems make to order. The result of data processing by using 2 production scheduling system, namely FCFS scheduling with makespan yield of 18.96 days. While the TOC scheduling with makespan obtained by 16.02 days in order to obtain savings of 2.94 days. Scheduling production with the TOC proposed because it has a greater throughput and successfully utilize the resources constraints, especially at work stations more effectively and efficiently.
ANALISA PERBANDINGAN PENGUKURAN TEKANAN ANNULUS TEORI DAN LANGSUNG PADA PROSES PENGEBORAN MINYAK BUMI Muhajir, Khairul; Sentono, Sugijarto Prawiro; Taufik, Esa
JURNAL TEKNOLOGI TECHNOSCIENTIA Technoscientia Vol 4 No 2 Februari 2012
Publisher : Lembaga Penelitian & Pengabdian Kepada Masyarakat (LPPM), IST AKPRIND Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.34151/technoscientia.v4i2.511

Abstract

In oil drilling process, the application of pressure measurements in in space between formation borehole and drill pipe (annulus) is very important. The correlation of predicted and measured annulus pressures is a very complex. The engineer’s knowledge of oil drilling process is very important to understand annulus pressure change and their effects will influence the accuracy of annulus pressure predictions. Factors that should be considered include the monitoring and collection of rig-site information such as density, viscosity of mud, drilling depth, flow rate, and drill pipe rotation. The author collects the data and made the analysis with supporting documents. The research concludes that there are differences between predicted and measured annulus pressure. The most dominant factor is mud density that measured on surface and the one in the bore hole. The mud density in the borehole is influences by another material from rubbish and cutting. The equation is not corrected by the influences of that another material. The higher of percentage of rubbish in the bore hole will be caused the higher of mud density; hence the ECD and annulus pressure will be higher also. The amount of rubbish also influenced by viscosity, flow rate, and drill pipe rotation.
MODELLING AND NN CONTROL OF A TWO-LINK FLEXIBLE ROBOT MANIPULATOR Khairudin, Mohammad
JURNAL TEKNOLOGI TECHNOSCIENTIA Technoscientia Vol 4 No 2 Februari 2012
Publisher : Lembaga Penelitian & Pengabdian Kepada Masyarakat (LPPM), IST AKPRIND Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.34151/technoscientia.v4i2.514

Abstract

This paper presents investigations into the development of neural network (NN) control of a two-link flexible robot manipulator with load 0.5 kg. A dynamic model of the system is derived using a combined Euler-Lagrange and assumed mode methods (AMM). The controller reduces nonlinearities problem that can be efficiently solved using NN control. The system responses namely hub angular position and deflection responses and end-point acceleration at both links are obtained and analysed. The performances of the controllers are assessed in terms of the input tracking controller capability of the system. Moreover, the robustness of the NN control schemes is discussed. Finally, a comparative assessment of the control strategies is presented. The results show that NN controller performs give increasing profiles that compared with PID control.
PRODUKSI MINYAK BIJI KAPUK DALAM USAHA PEMAN FAATAN BIJI KAPUK SEBAGAI SUMBER MINYAK NABATI Yuniwati, Murni
JURNAL TEKNOLOGI TECHNOSCIENTIA Technoscientia Vol 4 No 2 Februari 2012
Publisher : Lembaga Penelitian & Pengabdian Kepada Masyarakat (LPPM), IST AKPRIND Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.34151/technoscientia.v4i2.516

Abstract

Kapok tree (Ceiba pentandra) is a member of small class Malvales, family Malvaceae. The plant is native to the shout America, Central of America and Caribia. It grow well at the tropical region. In fact the kapok seed contains fatty acid with higher economic value which is called kapok oil. Oil of kapok seed can be obtained from solid-liquid extraction methode. In this investigation, the extraction of kapok seed was carried out in the stirred tank with ethanol as a solvent. Extract was distilled to separate kapok seed oil from solvent. The variable of investigation were extraction temperature , stirring speed, ratio between solvent volume and mass of kapok seed , and size of kapok seed. Tthe extracted oil was analyzed by using gas chromatography to determine the fatty acid composition. The optimum condition of kapok seed extraction were obtained at boiling point of ethanol ± 78 oC, stirring speed 400 rpm, ratio between solvent volum and mass of kapok seed is 16mL: 1gr, and size of kapok seed (-30 / 40 ) mesh or average diameter 0,065 cm. The corelation between mass transfer coefficient and these variables is shown in the dimensionless equation below : Sh = 0,132 Re(0,5004). Sc 0,651. with the average error 0,95 %

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