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All Journal World Chemical Engineering Journal Majalah Ilmiah Pengkajian Industri (JIML) JOURNAL OF INNOVATIVE MATHEMATICS LEARNING
Ade Irman, Ade
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Aerospace Engineering Chemical Engineering, Chemistry & Bioengineering Education Engineering Industrial & Manufacturing Engineering Mathematics Transportation Other

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Discovery Learning Model and Props of Statistical Kenik In Improving The Mathematical Communication Ability of Junior High School Students Gustiani, Dini Sri; Irman, Ade; Fadhillah, Fika Muji
(JIML) JOURNAL OF INNOVATIVE MATHEMATICS LEARNING Vol 2, No 1 (2019): VOLUME 2 NUMBER 1, MARCH 2019
Publisher : IKIP Siliwangi

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (310.081 KB) | DOI: 10.22460/jiml.v2i1.p29-38

Abstract

The purpose of this study is to examine the achievement and improvement of junior high school students' mathematical communication ability using discovery learning models and props of statistical kenik compared to students who use ordinary learning, and student activities during learning using discovery learning models and props of statistical kenik to take place. This study used a quasi-experimental design. The experimental group obtained learning with discovery learning models and props of statistical kenik and control groups obtained regular learning. The instrument used was a test of mathematical communication ability. The population in this study were all eighth grade students of SMP Negeri 2 Cilamaya Kulon Karawang. With the sample subjects were eighth grade students as many as two classes from the five existing classes randomly selected. The results of this study are: (1) There is achievement and improvement of mathematical communication ability between students whose learning uses discovery learning models and props of statistical kenik compared to students who use ordinary learning; (2) Learning by using discovery learning models and visual aids shows that the learning process is more effective in mathematical problems solving and students can find statistical material concepts.
DEVELOPING SUPPLY CHAIN NETWORK WITH PIECEWISE LINEAR TRANSPORTATION COST FOR A SMALL-AND-MEDIUM ENTERPRISE (SME) IN CILEGON Kurniawan, Bobby; Irman, Ade; Gunawan, Akbar; Umyati, Ani; Febianti, Evi; Wahyuni, Nuraida; Ferdinant, Putro Ferro; Ekawati, Ratna; Fellek Getu Tadesse
Majalah Ilmiah Pengkajian Industri Vol. 15 No. 2 (2021): Majalah Ilmiah Pengkajian Industri
Publisher : Deputi TIRBR-BPPT

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Abstract

This study proposed a supply chain network for determining suppliers’ location in which the transportation costs are a piecewise linear function. The supply chain network consists of a production facility, suppliers, and customers. These types of costs are found in the fields of transportation, logistics, and purchasing discount. First, the supply chain network is formulated as the mixed-integer non-linear programming (MINLP) because piecewise linear transportation cost makes the model non-linear. Then, the model is transformed into a mixed-integer programming (MIP) model using the convex-combination method to overcome this nonlinearity. The model was used for solving the problem faced by a small and medium enterprise (SME) in Cilegon. The MIP was solved using the CPLEX software. Sensitivity analysis was carried to provide the SME with several alternatives in handling the suppliers’ location problem
Design of Laboratory Scale Oil Distillation Machine Satria, Dhimas; Rosyadi, Imron; Irman, Ade; Lusiani, Rina; Haryadi, Haryadi; Siregar, Abdul Rahman
World Chemical Engineering Journal VOLUME 1 NO. 3 DECEMBER 2016
Publisher : Chemical Engineering Department, Engineering Faculty, Universitas Sultan Ageng Tirtayasa

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.62870/wcej.v1i3.945

Abstract

In Indonesia there are 4,000 old oil wells are not exploited again by Pertamina becauseit is not economical, some old wells exploited and processed in the traditional way.Their traditional oil processing has not significantly give a role to the income of localcommunities, as the mining process that is not managed by modern technologyresulting in a weak bargaining position. This study aims to participate in the welfare ofthe community in areas rich in oil resources and also support the energy security bydeveloping technologies distillationof crude oil into diesel by exploiting oil wellsparents who are not exploited again by Pertamina that will improve the bargainingposition (bargaining power), increase revenue, reduce unemployment and poverty andhas created a system of social safety nets and insurance against society.The methodused is the method of Pahl and Beitz, which consists of the Planning and TaskClarification, Conceptual Design, Embodiment Design, and Detail Design.The results ofthe research are the best variant for the design of machines fractional distillation ofpetroleum laboratory scale variant 1 (Boiler cylinder - 0.5 inch Pipe - Tubes distillationcylinder - gas stove), by reason of the appropriate size pipe diameter and more securethan the variance other variants. While the dimensions obtained from the draft is 1.31m 2 for a total dimension of the tower area (AT) and 408 mm for diameter Total Tower(DT), and 3 mm for the reactor tube wall thickness. In addition, the test results of oilthat has been processed using distillation machine laboratory scale show still makesdiesel specifications in accordance with standards established by the Government,namely the specifications for specific gravity, viscosity, water content, maximumheating and visual appearance.
Co-Authors Abdul Rahman Siregar, Abdul Rahman Ani Umyati Bobby Kurniawan Dhimas Satria Evi Febianti Fadhillah, Fika Muji Fellek Getu Tadesse Gunawan, Akbar Gustiani, Dini Sri Haryadi - Imron Rosyadi Nuraida Wahyuni Putro Ferro Ferdinant Ratna Ekawati Rina Lusiani