Judul: Vehicle Routing Problem pada Distribusi Sayuran Organik
Abstrak: Pengendalian permasalahan yang terjadi pada distribusi sayuran organik dapat diselesaikan dengan Multiple Trip Vehicle Routing Problem for Multiple Product and Compartments with Time Windows (MTVRPMPCTW) dan diselesaikan dengan salah satu metode eksak, yaitu Integer Linear Programming. Aplikasi model dilakukan terhadap tiga kasus berbeda, pelayanan 5 lokasi dengan rute tunggal, pelayanan 10 lokasi dengan rute majemuk, dan pelayanan 15 lokasi dengan rute majemuk serta adanya time windows yang harus terpenuhi. Pada kasus 10 lokasi dan 15 lokasi, kendaraan yang telah selesai mengantarkan sayuran organik harus kembali ke depot dan dapat melakukan lebih dari satu kali proses distribusi apabila masih terdapat lokasi yang belum dilayani. Setiap lokasi pada seluruh kasus dapat memesan lebih dari satu jenis sayuran organik. Produk yang dikirim akan ditempatkan di kompartemen yang spesifik agar produk tidak saling bercampur. Solusi yang diperoleh berupa rute pendistribusian sayuran organik yang meminimumkan total biaya distribusi, serta semakin bertambahnya lokasi maka semakin bertambah pula waktu komputasi yang diperlukan., The distribution problem of organic vegetables can be solved by the Multiple Trip Vehicle Routing Problem for Multiple Products and Compartments with Time Windows (MTVRPMPCTW) and solved by one exact method, namely Integer Linear Programming. The application of the model is carried out on three different cases, service for 5 locations with a single trip, service for 10 locations with multiple trip, and service for 15 locations with multiple trip and there are time windows that must be met. In the case of 10 locations and 15 locations, vehicles that have finished delivering organic vegetables must return to the depot and can carry out more than one distribution process if there are still locations that have not been served. Each location in all cases can order more than one type of organic vegetable. Products sent will be placed in a specific compartment so that the products do not mix with each other. The solution obtained is in the form of an organic vegetable distribution route that minimizes the total distribution cost, and the more locations, the more computational time required.
Keyword: distribution route, exact method, MTVRPMPCTW, organic vegetables

Judul: Penyelesaian Vehicle Routing Problem pada Pendistribusian Sayuran Dataran Tinggi Menggunakan Algoritme Genetika (Studi Kasus PT Saung Mirwan)
Abstrak: Vehicle routing problem (VRP) is an important issue on a transportation system that aims at minimizing the total vehicle mileage to reduce vehicle operating cost to a minimum. Vehicle routing problem belongs to the class of non-polynomial hard (NP-hard), which generally uses a heuristic approach to find a solution. In this time, Vehicle routing problem resolution will be applied to the distribution of highland vegetables from PT. Saung Mirwan as the vegetable distribution center. The problems that often arise in the distribution of highland plain vegetables is to how minimize the total of transportation costs without sacrificing the goal completion time to reduce the risk of the decline in the quality of vegetables during the trip. Issues will become increasingly complex if the vehicle routing problem is flexible to changes that occur in the limit or the value of decision variables. The problems encountered in this case include heterogeneous multi fleet VRP, single source, single trip, and multi-product. Therefore, this research used genetic algorithm optimization method (GA) to solve the problem. Genetic algorithm is one of the heuristic methods, which is analogous to the process of evolution by natural selection phase, crossover and mutation. In this paper a simulation is performed by searching the optimum solution to the location of the distribution as the destination points. Optimum solutions are obtained in the form of division of highland vegetable distribution channels that meet the existing constraints. As a solution, there was reduction of the distribution time of about 1 hour 58 minutes or an increase in time efficiency by approximately 32.22% and a reduction of the fleet utilization by 1 fleet or an increase of fleet efficiency by 14.28%.
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Judul: Embriogenesis ikan buta (Astyanax fasciatus)
Abstrak: Ikan buta Astyanax fasciatus adalah spesies ikan unik dari famili Characidae yang menempati perairan dalam gua di Wilayah La Cueva Chica-San Luis Potasi-Mexico. Ikan ini memiliki mata yang tereduksi (Blind Cavefish) dan warna kulit merah muda, pucat serta mengkilap.
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