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Infotekmesin
Published by Politeknik Negeri Cilacap
ISSN : INFOTEKMES     EISSN : 26859858     DOI : -
Core Subject : Science, Engineering,
Computer Science & IT Electrical & Electronics Engineering Mechanical Engineering
INFOTEKMESIN is a peer-reviewed open-access journal with e-ISSN 2685-9858 and p-ISSN: 2087-1627 published by Pusat Penelitian dan Pengabdian Masyarakat (P3M) Politeknik Negeri Cilacap. The journal invites scientists and engineers to exchange and disseminate theoretical and practice-oriented in the various topics include, but not limited to Informatics, electrical Engineering, and mechanical Engineering.
Arjuna Subject : -
Articles 669 Documents
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OPTIMALISASI ALGORITMA C4.5 MENGGUNAKAN ALGORITMA GENETIKA UNTUK PREDIKSI KELULUSAN SISWA SMKN 2 CIMAHI Castaka Agus Sugianto; Nadya Selvi Pujiyanita
Infotekmesin Vol 10 No 2 (2019): Infotekmesin: Juli 2019
Publisher : P3M Politeknik Negeri Cilacap

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35970/infotekmesin.v10i2.35

Abstract

SMK 2 Cimahi is an educational institution Vocational high school in Cimahi. Vocational high schools play an important role in creating the best graduates for the needs of the workforce. The graduation process is the latest activity of student management. Student graduation criteria for national exams must meet minimum scores, complete all subjects, take school exams, national exams, and competency tests. In the 2015 class of 300 students, students who did not pass the national exam were 1 student, in the 2016 class of 299 students, students who did not pass the national exam were 1 student, whereas in the 2017 class totaling 302 students 100% students graduate on time. However in the coming year, it is still unknown whether students will be 100% graduated or not. Therefore this study was conducted to predict student graduation using the C4.5 algorithm + Genetic Algorithm. C4.5 algorithm has an accuracy rate of 99.78%, precision of 99.78%, 100% recall and 1 second execution time. While the C4.5 + genetic algorithm has an accuracy rate of 99.78%, precision of 99.78%, 100% recall AUC 0.500, and 36 second execution time and after T-test testing between the C4.5 Algorithm and C4 Algorithm .5 +, Genetic Algorithm is said to be significant if alpha = 0.050. The results of this study obtained alpha = 1,000.
RANCANG BANGUN VENTURI SCRUBBER TERHADAP PENURUNAN EMISI JELAGA
Infotekmesin Vol 10 No 1 (2019): Infotekmesin: Januari 2019
Publisher : P3M Politeknik Negeri Cilacap

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35970/infotekmesin.v10i1.10

Abstract

The industrial world and vehicles that currently exist make the pollution level increase. Often we see thick smoke rising out of the factory chimney, the thick smoke is a waste of gas released by the environmental factory. The scrubber system is a collection of various air pollution control devices that can be used for particles and / or gases from industrial output gas streams. The term scrubber is also used to describe a system that injects or enters a dry active ingredient or liquid into a dirty gas stream to clean acid gas. The design of the venturi scrubber aims to design a venturi scrubber to reduce soot emissions on direct injection diesel engines, get a standard venturi scrubber design and reduce soot levels. This design begins with determining the alternative design, determining the venturi dimensions and the material that will be used to build the venturi scrubber. The result of this step is a working drawing that is ready to be realized through machining. Next is to make the components based on the design results in the previous step. These components are then assembled into a tool. The final step is to do the venturi design test according to the venturi type standard and the size requirements that are in the ISO 5167-4 standard. Making a venturi scrubber design program using Delphi-7 software with pressure drop data, liquid to gas ratio, diameter ratio, pipe diameter, throat diameter, renold number and type of flow that occurs and design using Solidworks 2010.
RANCANG BANGUN RASIO GEAR TERHADAP KECEPATAN PENGEROLAN PIPA
Infotekmesin Vol 9 No 01 (2018): Infotekmesin, Januari 2018
Publisher : P3M Politeknik Negeri Cilacap

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35970/infotekmesin.v9i01.9

Abstract

The basic principle of metal formation is a process that is done by giving shape changes on the workpiece. This shape change can be done by providing an outer force resulting in plastic deformation. The application of this metal formation can be seen in some examples such as rolling, bending, forging, extruding, wire drawing, deep drawing, and so on. In the process of formation of this metal is also used tooling (bending) whose function gives style to the workpiece, and direct the change of shape. Knowing the speed of the power forwarding system on the pipe roller machine starting from the power source until power is used as the work cycle, and to know the type of belt, the length of the belt used on the pipe roll machine. From this research can be concluded that: (1) In bending the thickness of 4 mm pipe the required power is 582.4 N with power of 0.4 hp then the motor required 1 hp, the diameter of the pulley used is 2 inch for motoran and 8 inch for the pivot reducer, belt used type B with length 44 inch, (2) To reach the rotation of ± 2 rpm ie pulley diameter used with the ratio of pulley ratio is 1: 4, the reducer is used with the value I = 60 and sprocket ratio 1: 3.
Knowledge Management Dalam Pemilihan Teknologi Administrasi P3M Politeknik Negeri Cilacap Cahya Vikasari
Infotekmesin Vol 11, No 1 (2020): Infotekmesin: Januari 2020
Publisher : P3M Politeknik Negeri Cilacap

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35970/infotekmesin.v11i1.108

Abstract

Application of technology is expected to simplify administrative work management. Cilacap State Polytechnic has P3M unit in charge of managing research and community service conducted by lecturers. Intellectual capital in P3M units that are easily lost, internal communication problems in P3M units that can inhibit knowledge and work sharing and the occurrence of errors’ duplication in P3M archive activities are some obstacles that occur during data management process. The technology application in the concept of knowledge management by considering the number of participants and the duration of the conversation is needed, therefore it can be concluded that the technology which can be used is presentation, computer share, chat, email, application. Applications made are suited to the needs of the data management application in the P3M unit. Successful application of technology can use the concept of ACKM and is applied in tertiary institutions.
PENERAPAN METODE PROTOTYPE DALAM PERANCANGAN APLIKASI E-LAPOR BENCANA BPBD SUMEDANG BERBASIS ANDROID Fathoni Mahardika; Yopi Hidayatul Akbar
Infotekmesin Vol 10 No 1 (2019): Infotekmesin: Januari 2019
Publisher : P3M Politeknik Negeri Cilacap

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35970/infotekmesin.v10i1.24

Abstract

The disaster that occurred in Sumedang district was the main concern of the services provided by the BPBD of Sumedang Regency, the handling of disasters that was fast and precise became the motto of BPBD. But in practice there are many obstacles, one of which is the lack of community participation in disaster reporting and many other technical constraints. Whereas with this reporting BPBD can quickly and responsively handle the disaster. E-disaster report based on Android BPBD Sumedang district is present as an electronic disaster reporting service to overcome problems in the BPBD of Sumedang district. This e-disaster report was built using a prototype software design methodology. This methodology is very suitable for software that continues to grow such as Android-based software. With this disaster report, people can easily report disasters. The location of the disaster can also be detected with the GPS feature on the Android smartphone. The community only needs to attach a photo of the event and the description of the incident and the report will be processed immediately by the investigating officer. With this application, Sumedang District people can participate in disaster reporting, and the BPBD of Sumedang District can be helped in carrying out the handling and handling of disasters quickly and precisely in Sumedang District.
RANCANG BANGUN ALAT PEMARUT DAN PEMERAS SANTAN KELAPA DENGAN MENGGUNAKAN 1 MOTOR PENGGERAK UNTUK MENINGKATKAN EFEKTIFITAS Akhmad Syakhroni; Sukarno Budi Utomo
Infotekmesin Vol 9 No 02 (2018): Infotekmesin, Juli 2018
Publisher : P3M Politeknik Negeri Cilacap

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35970/infotekmesin.v9i02.15

Abstract

There are many of food processing of raw materials are still using a separate tools of coconut grater and squeezer, which causes a long production process. Basically the grater machines on the market only can be used to scrape away the coconut meat. While the tool for extracting the coconut milk is still using coconut sieve and squeezed by hand. The Research initiated with a survey into traditional markets and entrepreneurs of coconut grater services around Semarang. The survey aimed to identify the tools used in the market and the needs of potential users. The survey obtained data of customer’s need that will be used as a reference for developing the concept of making tools. Anthropometric data needed to design the dimensions of the tool, with the purpose of the tool made will be ergonomics and comfortable to be used by the operator. Grater and Squeezer of Coconut Milk Tool which designed has dimensions of 105 cm height and 74 cm width. It has parts: the framework, grater, bleeder screw, motor, gear box, water container, and a pulley / wheel.
Optimasi Parameter Pemesinan Menggunakan Metode Taguchi Untuk Meningkatkan Kualitas Kebulatan Pada Pembubutan Internal Material S45C Joko Setia Pribadi; Yulianto Yulianto; Bayu Aji Girawan
Infotekmesin Vol 11, No 1 (2020): Infotekmesin: Januari 2020
Publisher : P3M Politeknik Negeri Cilacap

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35970/infotekmesin.v11i1.104

Abstract

The proper use of machining parameters in order to improve general quality is expected to optimize the results of the machining process including the use of the Taguchi experimental design. Several controlled parameters are carried out that are the cutting and feed speed, and cutting depth with three levels in the internal turning process of S45C steel material. Experiments were carried out using the Taguchi experimental matrix L9(34). The turning results are rounded and the variance and signal to noise ratio analysis are carried out in accordance with the proposed Taguchi design. The results obtained, the cutting speed and the identified cutting depth factors affect the roundness of the internal turning results. The results of the analysis of variance on the S/N ratio with smaller and better quality characters and based on hypothesis testing, is that the cutting speed and significant cutting depth parameters with a 90% confidence level affect roundness. The conditions of the cutting speed of 200 [m/min], the feed speed of 0.05 [mm/rev], and the cutting depth of 0.25 [mm] are the optimum parameters obtained.
PERANCANGAN APLIKASI PENJAMINAN MUTU SEBAGAI DATA PENDUKUNG BENCHMARKING PERGURUAN TINGGI
Infotekmesin Vol 9 No 01 (2018): Infotekmesin, Januari 2018
Publisher : P3M Politeknik Negeri Cilacap

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35970/infotekmesin.v9i01.6

Abstract

One of information system management that can ease and support information and decision making that needed by medium and upper level management is to provide the easy of acces towards information within or outside that relates with the organization’s goal. This study was conducted in the higher education that has organization structure includes lower, medium and upper level management. The method that used was software delevoping method, i.e. waterfall. The result of this study is this information system can be used to support data menagement of quality assurance for support benchmarking of the higher education, obtain information of the higher education activities that agree with target or visi and mission, and also compare the progress of each unit in the higher education. Therefore, from the exsist studies, it can be easy for the executive boards to make policy and decision for running the higher education.
FUNGSI GLCM PADA BACKPROPAGATION UNTUK IDENTIFIKASI SIDIK JARI Jani Kusanti; Tri Irianto Tjendrowasono
Infotekmesin Vol 10 No 2 (2019): Infotekmesin: Juli 2019
Publisher : P3M Politeknik Negeri Cilacap

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35970/infotekmesin.v10i2.40

Abstract

The use of fingerprints for identification has been done a lot, both in the police for investigations, in government for absences, in population and much more. To identify fingerprints, various methods are widely used which purpose is to produce a better level of accuracy. This is as reference to find out how important the function of the method will be used before the identification process is applied. The renewal of this research prioritizes how far the function of GLCM (GRAY LEVEL CO-OCCURRENCE MATRIX) is useful to improve the accuracy of fingerprint identification using the backpropagation method. The test results showed that GLCM can affect the increase in accuracy to 83%.
ANALISA PENGGUNAAN SILICON CONTROLLED RECTIFIER PADA ELEKTROPLATING TEMBAGA/BAJA KARBON RENDAH Vicky Prasetia; Roy Aries Permana T
Infotekmesin Vol 10 No 1 (2019): Infotekmesin: Januari 2019
Publisher : P3M Politeknik Negeri Cilacap

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35970/infotekmesin.v10i1.19

Abstract

Electroplating is one of the engineering improvements in the characteristics of metal materials. Copper coating is a pre-coating before further coating for steel. The surface area of the material is in line with the strong current requirements required for the normal coating process. However, too much current flowing into the cathode results in erosion at the anode. Silicon Controlled Rectifier (SCR) is a component made of semiconductor silicon. It has a function as a controller or switch. Silicon Controlled Rectifiers can be used to reduce coating currents in copper electroplating. The setting of the coating current can be done on copper electroplating of low carbon steel cathodes with a cross-sectional area of 7500 mm2 of 4.5 A; 5 A; 6 A; 6.5 A and 6.7 A. The best copper coating results with a 10 minute coating time are shown in the current 6.5 A with a coating mass of 1.11 grams and 1.06 grams. This proves the need for a reduction in the maximum flow so that optimal coating is achieved.

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