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Helmi Gunawan
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Simetris
Published by Sekolah Tinggi Teknologi Ronggolawe Cepu
ISSN : 16937066     EISSN : 2686312X     DOI : https://doi.org/10.51901/simetris.v14i2.124
Core Subject : Engineering,
Civil Engineering, Building, Construction & Architecture Control & Systems Engineering Electrical & Electronics Engineering Industrial & Manufacturing Engineering Mechanical Engineering
SIMETRIS: The Journal of Technology and Applied Science is a scientific journal published regularly every six months, namely June and December. SIMETRIS: Journal of Technology and Science Accepts articles from various groups covering the study and application of theory, research results, interesting conceptual ideas in the fields of engineering and applied science. The editorial team will decide on the selection of articles to be published after receiving the results from the expert editing team. Authors will be given input from the expert editing team. SIMETRIS: Journal of Technology and Applied Science contains research articles or literature studies in Indonesian and English.
Arjuna Subject : Teknik (semua kategori) - Teknik (Lain-Lain)
Articles 3 Documents
 1 
Search results for , issue "Vol 9 No 2 (2015): SIMETRIS" : 3 Documents clear
SISTEM INFORMASI KEPEGAWAIAN BERBASIS WEB (Studi Kasus: Sekolah Tinggi Teknologi Ronggolawe Cepu) Azizah Fajr; Joko Handoyo
SIMETRIS Vol 9 No 2 (2015): SIMETRIS
Publisher : Sekolah Tinggi Teknologi Ronggolawe Cepu

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Abstract

Employees is an important subject in an organization. In the absence of a good employee, your organization will be difficult todevelop because of the strength of any organization lies in its employees who manage and handle it. In fixing the system regulating themanagement of staffing at the high school of Technology Cepu Ronggolawe needed a fast, precise and accurate. To avoid ineffectiveness, thedeficiency, and to improve performance in serving the prospective employees, then the required development of the system by changing intoa web-based information systems.Using the approach through several stages for analyzing and designing the system, the process is developed through the use of thecycle of activities and users specifically Analyzer (structured), that is the method of SDLC (System Development Life Cycle) and the waterfallmodel consists of the planning phase of the system, analysis, design, coding, testing, and maintenance. Testing instruments done through testfunctionality and black box testing. In this system for the creation of web-based programs online using Laravel programming language andMySQL by using the Sublime Text 2.Staffing information system is expected to ease the staffing section in the Cepu STTR Staffing process data. The end result of testfunctionality of information systems personnel declared worthy in terms of functionality, with 100% results on black box testing to testing ofsuitability characteristics and accurancy.
STUDI EKSPERIMEN PENGARUH KUAT ARUS TERHADAP KEKUATAN TARIK DAN KEKERASAN HASIL LASAN LOGAM PIPA ALUMINIUM SERI 5000 (AlMg5) Ali Achmadi
SIMETRIS Vol 9 No 2 (2015): SIMETRIS
Publisher : Sekolah Tinggi Teknologi Ronggolawe Cepu

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Abstract

Welding technology is one part that can not be separated in manufacturing technology. In general,welding can be interpreted as a metallurgical bond in a metal or alloy metal connection which iscarried out when the metal is liquid. Now welding is the implementation of a very important job inproduction technology with metal raw materials. In this study aims to determine how the influence ofstrong currents on mechanical properties in MIG welding. that is by changing the welding currentstrength of 70 A, 90 A and 110 A and using a reverse polarity DC welding machine. After weldingwith varying currents, tensile and hardness testing are carried out. From these stages it will be knownthe extent of the strong influence of the flow of MIG welding results. The test results show that weldingwith a strong current of 70 A has the highest average tensile strength compared to a current strengthof 90 A and 110 A that is equal to 121.25 N / mm2. Furthermore, for hardness testing, the highesthardness data is found on the welding metal with a strong current of 70 A with a value of 96.6 HRB.From the results of tensile testing and hardness testing, the current strength factor greatly influencesthe results of welds (tensile strength and hardness). Here the 70 A strong current can produce betterwelding strength than 90 A and 110 A.
SISTEM INFORMASI LABORATORIUM KALIBRASI MIGAS (Studi Kasus: Pusat Pengembangan Sumber Daya Manusia Minyak Dan Gas Bumi Cepu) Joko Handoyo
SIMETRIS Vol 9 No 2 (2015): SIMETRIS
Publisher : Sekolah Tinggi Teknologi Ronggolawe Cepu

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Abstract

As an institution engaged in calibration services at the Center for Oil and Gas Human Resource Development Cepu, the Oil and Gas CalibrationLaboratory needs to continually make breakthroughs or steps so as to improve service to customers. A faster service time and an accountableand credible system are some prerequisites for improving service. In the improvement of calibration services at the Oil and Gas CalibrationLaboratory with the emphasis on information systems, a relatively fast, precise and accurate system is needed. To avoid inefficiency,inefficiency and to improve performance in serving the applicants, it is necessary to design the information system of Oil and Gas CalibrationLab. By using the approach through several stages to analyze and design the system, the process is developed through the use of a cycle ofactivity analyzer and user in a specific (structured), the method SDLC (System Development Life Cycle) with waterfall model. In this systemfor making program online using PHP and MySQL programming language by using CodeIgniter. This information system consists ofcomponents applying for calibration, data input process until calibration certificate information. So that this information system can assist inthe process of calibration service and make agenda report receipt of goods quickly, accurately and easily.

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