Judul: Optimization Facility Location with Transfer Product Between Facilities
Abstrak: Penentuan lokasi fasilitas yang tepat bagi suatu perusahaan dapat meningkatkan efisiensi biaya distribusi sehingga memaksimumkan keuntungan. Lokasi fasilitas dengan biaya distribusi terkecil akan dipilih untuk meminimumkan biaya distribusi. Namun, pada masalah lokasi fasilitas dengan kapasitas terbatas, fasilitas tersebut memungkinkan tidak dapat memenuhi permintaan pelanggan. Penulisan ini menyajikan adanya transfer produk antarfasilitas untuk memenuhi permintaan pelanggan dengan biaya yang lebih kecil. Hal ini disebut dengan Facility Location Problem with Capacity Transfer (FLPCT). Pada model ini, pendistribusian dapat menggunakan alokasi multiple sourcing, yaitu pelanggan dapat dilayani dari beberapa lokasi fasilitas. Selain itu, fasilitas dapat menjadi titik transshipment yaitu fasilitas yang telah menerima produk hasil transfer dapat mengirimkan produk lagi ke fasilitas lain. Optimasi sistem distribusi dilakukan dengan mempertimbangkan biaya tetap, biaya distribusi dan biaya transfer. Penulis menggunakan metode eksak dengan bantuan software LINGO 18.0 untuk menyelesaikan simulasi numerik dan diperoleh hasil yang lebih optimal dengan adanya transfer produk., Determining the right facility location for a company can increase the efficiency of distribution costs to maximize profits. The location of the facility with the smallest distribution costs will be chosen to minimize distribution costs. However, the problem of the location of facilities with limited capacity, these facilities may not be able to meet customer demand. This paper presents a product transfer between facilities to fulfill customer demand at a small cost. It is called the Facility Location Problem with Capacity Transfer (FLPCT). In this model, distribution can use multiple sourcing allocation, where customers can be served from several facility locations. In addition, facilities can become transshipment points, which means facilities that have received transferred products can send the product again to another facility. Optimization attempted of the distribution system to consider by considering fixed costs, distribution costs, and transfer costs. The author uses the exact method with the help of LINGO 18.0 software to complete numerical simulations and obtain more optimal results with the transfer of products.
Keyword: capacitated facility, facility location, integer programming, product transfers, transshipment

Judul: Penentuan Lokasi Gudang dan Rute Pendistribusian Menggunakan Integer Programming
Abstrak: Distributing is one of important activities in a company. The efficiency of distribution costs can increase company profits. In this context the problems faced by the company are to reduce distribution costs including the determination of the warehouse location and the distribution route. In this paper, two mathematical models are studied. Those are the model for determining the warehouse location and the distribution route. Models are formulated in term of integer programming. In implementation, we consider a logistic company which has 1 distribution center, 2 warehouses, 3 suppliers, 40 customers, and 24 trucks with different capacities. The company plans to establish at most 3 new warehouses. It is demonstrated that, by using the models, two new locations of warehouse are recommended and an optimal distribution route is provided.
Keyword: warehouse location, distribution routing, distribution

Judul: Ornithonyssus Bursa (Berlese, 1888) Famili Macronyssidae yang Menyerang Unggas Dan Penaggulangannnya
Abstrak: Ornithonyssus bursa adalah tungau penghisap darah pada unggas di daerah tropis dan subtropis. Tungau ini relatif kecil, dengan panjang tubuh antara 700-1000 mikron dan lebarnya 250-490 mikron. Tubuhnya bulat berwarna coklat kekuningan sebelum menghisap darh dan berwarna merah setelah menghisap darah dari induk semangnya.
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