Judul: Optimisasi Manajemen Produksi Berbasis Fuzzy Goal Programming (Studi Kasus pada Perusahaan Minuman Ringan)
Abstrak: Every company wants to regulate the production of each product in order to provide optimum benefit for the company. To optimize the benefits need to consider the cost and used production equipment. So that the objectives are not limited to optimization of profits but also consider the desire of decision makers in the company. This research will analyze production management optimization-based fuzzy goal programming (FGP). By reason of FGP consider the decision maker wishes to determine any restrictions on the objective function value that exists. Companies to be analyzed is the PT. Bangun Wenang Baverages Company (BWBC) which is a soft drink company. The objective function to be analyzed is profit maximization, minimization of working time machine, minimization the cost of raw materials, and minimization the cost of labor. In FGP models, each of the objective function is converted into the form of constraints with fuzzy membership functions respectively. For analysis of the optimal solution, FGP formed into a model such as linear programming. Further sensitivity analysis was performed after the optimal solution is obtained, to see the changes in each interval availability of resources to maintain optimal conditions. Model optimization and sensitivity analysis is a part in the decision support system for the company in its production planning. This study provides the results of the FGP can accommodate the decision-makers desires in each objective function. This model provides an optimal solution for the company based on the decision-makers desire. For PT. BWBC, the model established in this study provide an optimal solution for the company in its production planning based on the decision-maker wishes fourth objective function that is it.
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Judul: Optimisasi Penjadwalan Produksi Menggunakan Integer Linear Programming: Studi Kasus di PG.Bungamayang PT Buma Cima Nusantara.
Abstrak: Salah satu masalah dalam proses produksi adalah hal-hal yang terkait dengan penjadwalan produksi. Dalam produksi gula masalah ini ditemukan mulai dari proses di tingkat kebun sampai dengan proses di tingkat pabrik. Penjadwalan yang tidak baik menimbulkan ketidaktepatan waktu kedatangan tebu dengan waktu produksi pabrik. Kenyataan ini mengakibatkan terjadinya peningkatan jam henti giling pabrik, dan penurunan kadar gula/rendemen tebu yang telah ditebang. Karya ilmiah ini memformulasikan masalah penjadwalan produksi dalam bentuk model linear programming (LP) dan integer linear programming (ILP). Model ini diimplementasikan pada kasus pabrik gula Bungamayang. Hasil implementasi model memberikan solusi dalam bentuk banyaknya truk minimum truk yang diperlukan dalam proses produksi per hari yaitu sebanyak 243 unit yang terdiri atas 137 unit truk kecil dan 106 unit truk besar.
Keyword: flow shop, integer linear programming, pabrik gula, penjadwalan, penjadwalan produksi

Judul: Posisi Filogenetik Kura-Kura Carettochelys Insculpta  (Reptillia: Testudinata)
Abstrak: Carettochelys insculpta is an endemic freshwater turtle of southern Papua and northern Australia. Phylogenetic position of this turtle is remain unresolved until now. Most of the research conducted show close relationships of C. insculpta and members of Trionychidae family. However, some of the research show distance between C. insculpta and members of Trionychidae family. This research is conducted to analyze phylogenetic relationship between C. insculpta and other members of Testudinata using 12S rRNA, 16S rRNA, and both gene as markers. DNA samples were obtained from three different organisms of C. insculpta. Two species used as outgroups were Alligator mississippiensis and Iguana iguana. Phylogenetic analysis was carried out using Neighbor-Joining method with Felsenstein 1981 (F81) modeltest. A polytomy tree of Testudinata was produced by using 12S rRNA gene. However, analysis using 16S rRNA and both genes as markers confirmed that C. insculpta was located between the Chelonidae and the Trionychidae family.
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