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All Journal J@TI (TEKNIK INDUSTRI) REKAYASA International Journal of Science, Engineering and Information Technology Bulletin of Social Informatics Theory and Application
Hakam Muzakki
Industrial Engineering Departement Diponegoro University Jl. Prof. Sudarto, SH Tembalang Semarang 50239 Telp. 0247460052
Agriculture, Biological Sciences & Forestry Civil Engineering, Building, Construction & Architecture Computer Science & IT Electrical & Electronics Engineering Engineering Industrial & Manufacturing Engineering Mechanical Engineering Physics Social Sciences

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RANCANG ULANG MESIN FERMENTASI ROTI DENGAN PENDEKATAN REKAYASA NILAI DAN ANALITICAL HIRARCHY PROCESS DIGUNAKAN SEBAGAI PEMBOBOTAN ALTERNATIVE Muzakki, Hakam
J@ti Undip : Jurnal Teknik Industri Volume 8, No.2, Mei 2013
Publisher : Departemen Teknik Industri, Fakultas Teknik, Universitas Diponegoro

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (372.084 KB) | DOI: 10.12777/jati.8.2.123-132

Abstract

Dalam makalah ini dibahas mengenai rekayasa ulang mesin fermentasi dengan beberapa alternatif rancangan dan komponen untuk meningkatkan kinerja dari mesin, serta juga dibahas mengenai analisa biaya dari masing-masin rancangan sehingga harga dari mesin yang baru lebih terjangkau oleh home industri. Agar pembahasan makalah ini lebih fokus maka studi kasus dilakukan pada perusahaan home industri roti UD XYZ di kabupaten Bangkalan. Metode dan teknik yang digunakan dalam merancang ulang mesin fermentasi roti pada home industry UD XYZ dengan pendekatan rekayasa nilai, sistem pakar dipergunakan untuk langkah informasi, langkah kreative, dan penetuan kriteria dan pembobotan. fishbone diagram dan Pareto diagram dipergunakan untuk tahap identifikasi dan kreative. AHP dipergunakan untuk pembobotan dan penentuan kriteria atau alternatif. Alternatif 1 merupakan rancangan yang paling baik dibandingkan dengan alternatif-alternatif yang lain, dan mempunyai kinerja hampir dua kali lipat dibandingkan dengan mesin awal. Kata kunci : mesin fermentasi roti, rekayasa nilai, analitical hyrarchy process   Abstract This paper is discussed about redesign fermentation machine by some design alternatives and componens to improve performance of machine, it is also explained about cost analysis each design so the price of machine is cheaper so the home industries can buy it. To focuse, this paper has token in a home indutry. It is UD XYZ in Bangkalan distric. Teknique and method has been used to redesign fermentation cake at the home industry UD XYZ by value engineering, expert system is used to information stage, creative stage, and criteria decission stage and wight. Fishbone diagram and pareto diagram are used to identification and creative stage. AHP is used to wight and creative or alternative decission. Alternative 1, one of some alternative, is the best alternative when compared with another and it has more than the old machine. Keyword : baerd fermentation machine, value engineering , analitical hyrarchy process  
Pemilihan Tipe Produk Unggulan dengan Menggunakan Metode Linear Programming dan Peramalan Permintaan Menggunakan Time Series Muzakki, Hakam
Rekayasa Vol 2, No 1: April 2009
Publisher : Universitas Trunojoyo Madura

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (3332.468 KB) | DOI: 10.21107/rys.v2i1.2196

Abstract

One weaknees in Small and Medi um Enterpri se offurniture, the reasearch didn't calculate some materia l requirements which need ed by SME's intuition and also experiment (trial and error) . The result of the research expected SME' sfurniture improved management sy stem and inventory system  in order  to compete among  of 2.426  SME  others  118 industrial fUrniture   (Deprindag fa tim, 2003). Some of s tage to improve system and management operation required f easible methorie to evaluated. Optimal solution by LINDO got to pro d uce and sold  120 unit doors, 84 unit table, 33 unit cuboard and chair and hanger produced only order . Forecast methode used decomposi tion better than winter's due to error degree, datas obtained  in demmend  2007 up to 2008.Keywords: SME's Furniture, Linier Programming, Time Series
A novel framework of e-participation for smart cities Yusuf, Muhammad; Alamsyah, Nurwahyu; Syarif, Muh.; Muntasa, Arif; Muzakki, Hakam
Bulletin of Social Informatics Theory and Application Vol. 3 No. 2 (2019)
Publisher : Association for Scientific Computing Electrical and Engineering

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31763/businta.v3i2.213

Abstract

The smart city is an exciting concept for improving the quality of the city. However, a smart city needs participation from citizens and all related stakeholders to use the technologies effectively in order to achieve the goal and solve the problems. Even though the city already has high-tech infrastructures, participation still required to provide ideas, inputs, and roles within the development of smart city concepts. This research aims to describe and analyze the current state of the e-Participation frameworks and propose a novel framework for smart cities. The analysis will go through a systematic literature review. Hopefully, this study makes contributions by providing a novel framework of e-Participation for smart cities. This research has implications for theory and practice. For theory, the novel framework can be added to the body of knowledge of e-participation, e-government, and smart cities fields. For practice, the framework will be useful for practitioners, policymakers, people and other stakeholders related to the smart city governance to increase citizen participation through technology-based services.
Optimization of Welding Parameters and Cooling Media on the Mechanical Properties of SMAW Welding on CNP Channel Steel Material using Taguchi Method Mubarok, Khamdi; Izzudin, Mohammad Nur; Muzakki, Hakam; Anwar, Muhammad Nurul
International Journal of Science, Engineering, and Information Technology Vol 7, No 02 (2023): IJSEIT Volume 07 Issue 02 29 July 2023
Publisher : Universitas Trunojoyo Madura

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21107/ijseit.v7i02.21612

Abstract

CNP channel steel, commonly referred to as lightweight C-channel steel, is a steel bar characterized by its 'C' shaped cross-section, produced through the cooling process of steel plates or strips. This type of steel holds significant importance in construction, as the strength of its connections plays a critical role in its load-bearing capacity. In this research, a low carbon steel, specifically CNP channel steel with a 3 mm thickness, was selected as the base material. The welding parameters included varying welding currents (70 A, 80 A, and 90 A), welding speeds (2 mm/s, 3 mm/s, and 4 mm/s), and different cooling media (NaCl solution, mineral water, and lubricant). Following the welding process, tensile tests were conducted to evaluate the mechanical properties of the welded joints. The Taguchi Orthogonal Array L9(33) method, comprising 9 experiments with 3 replications, was utilized to determine the optimal combination of parameters. The results show that the highest tensile strength recorded was 38.75 N/mm² in the combination of a welding current of 80 A, welding speed of 4 mm/s, and cooling media using mineral water. On the other hand, the lowest tensile strength recorded was 12.70 N/mm² (70 A, 3 mm/s, NaCl solution). The welded joints indicated that 16 specimens experienced brittle fractures, while 11 specimens exhibited ductile fractures. Brittle fractures mainly occurred at the welding joints, while ductile fractures were found in the base material. Based on the Taguchi method, the optimal parameter values were identified a welding current of 90 A, a welding speed of 4 mm/s, and using lubricant as the cooling media which welding current holds the highest percentage of contribution.
Co-Authors Alamsyah, Nurwahyu Anwar, Muhammad Nurul Arif Muntasa Izzudin, Mohammad Nur Mubarok, Khamdi Muhammad Yusuf Syarif, Muh.