Judul: A Queue Evaluation and Production Improvement of Cheese Curd Trolley Movement (A Case Study in A Cheese Industry).
Abstrak: Antrian merupakan sebuah proses yang dimulai dengan kedatangan costumer ke fasilitas pelayanan dan harus menunggu karena belum menerima pelayanan, kemudian dilayani dan akhirnya meninggalkan fasilits pelayanan tersebut. Penelitian ini mengevaluasi antrian trolley keju mentah yang terjadi diarea grinding dan memberikan saran perbaikan pada perusahan. Sistem antrian yang dianalisa yaitu sistem antrian jalur tunggal satu fasilitas pelayanan dengan metode antrian baku. Hasil penelitian menunjukan bahwa terdapat sekitar 2 trolley dalam sistem yang mengantri setiap jamnya dengan rata-rata waktu mengantri selama 8.57 menit. Untuk mengurangi jumlah dan waktu antrian, alternative yang dipilih adalah menambah satu grinder sehingga waktu rata-rata waktu trolley mengantri dalam sistem menjadi 3.35 menit dan hanya 1 trolley yang mengantri. Namun pemilihan alternative tersebut menimbulkan beberapa dampak yaitu penurunan allowance dari 198.91 menjadi 164.54%, penurunan utilitas dari 65% menjadi 33% yang mana meningkatkan biaya mengganggur menjadi Rp466.244/hari dan biaya yang dikeluarkan untuk membeli grinder sebesar Rp14.106.021/bulan. Setiap dampak kemudian di evaluasi dan didapat informasi bahwa penurunan allowanace tersebut masih dapat diterima sehingga tidak diperlukan perluasan area, kemudian penurunan utilitas dapat ditingkatkan menjadi 43% dengan meningkatkan laju kedatangan menjadi 17 trolley/jam sehingga biaya mengganggur berkurang menjadi Rp396.656/hari dan hasil evaluasi dari pembelian grinder menunjukan omset yang bisa dihasilkan dari penambahan grinder mencapai Rp789.966.667/hari sehingga pembelian grinder baru dapat menjadi saran untuk perusahaan.
Keyword: antrian, dampak, evaluasi

Judul: Analisis Sistem Antrian Pada Industri Pengolahan Roti (Studi Kasus Di PT Nippon Indosari Corpindo)
Abstrak: Productivity is one of important thing to be concerned in industrial development efforts because the productivity value becomes an indicator of company efficiency and effectiveness. Achievement of high productivity is determined from the continuity of production process or production balancing. Production balancing is determined by service velocity and arrival velocity or the existence of bottleneck due to queuing. The queue occured when the arrival of raw materials exceed than production capacity and at the time when arrival time faster than service time so that the following materials which arrived could not be serviced directly because of busyness services. In the bread processing industry PT Nippon Indosari Corpindo, production processed with semi-automatic system which combined between machine and operator so that there are a variety of service rate with probabilistic patterns. Therefore, production queuing of company needs to be analyzed to anticipate any additional costs due to material damage during production process. In the bread processing industry, it will cause over-fermentation and then will reduce the quality of product because of waiting time materials. If that condition continues, the material loss in company will be larger. Therefore, need a simulation to be developed with queuing theory. The research purposes was identifying queuing models that occurs in a production line, analyzing queuing system performance, identifying causing factors of queue and developing queuing models scenario. This research is limited to queuing system analysis and development models in sweet bread line PT Nippon Indosari Corpindo from raw material which arrived into first production station until the end of production station. This sweet bread line had 16 service stations that consisted of machine or room service and operator service. Sixteen stations was mixing sponge stations, first fermentation, mixing dough, floor time, dividing, rounding, intermediate proofing, filling, make up, panning, second fermentation, baking, depanning, cooling, packaging and crating. There was 6 stations using operators that was filling station (1 operator), make-up (4 operators), panning (2 operators at ripped bread items and 1 operator at filled bread items), baking (1 operator), depanning (1 operator) and crating (2 operators).
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Judul: Mitochondrial DNA Gene Organization and Phylogenetic Relationship of Naja siamensis
Abstrak: Naja siamensis is one of Asiatic cobra in the Family of Elapidae, known as a cryptic snake. It has many morphological variations that lead to misidentification. Misidentification can cause the wrong concept in developing antivenom types due to high snakebite cases occur in Thailand. Thus, an accurate species identification using a molecular approach is crucially required. Mitochondrial DNA has been used widely in snake molecular studies. These studies were aimed to determine the arrangement of the N. siamensis partial mitochondrial genes using reptile-oriented primers and to reveal the phylogenetic relationship among other species of Asian cobra. DNA extraction was carried out based on the standard DNA salting-out protocol and was conducted by bioinformatics analysis using BLASTn and MEGA 6 software. Gene annotation was performed against N. kaouthia complete genome. A total of 3121 bp of N. siamensis mtDNA genes were sequenced consisting of partial of six regions: 16S rRNA, ND1, tRNA-Ile, CRII region, tRNA-Leu, tRNA-Gln, and COI genes. The mtDNA gene organization of N. siamensis was predicted to has a similar pattern with the common Elapidae mtDNA gene organization. This study showed that there is a monophyletic form in Naja genus and N. kaouthia is the closest species with N. siamensis based on partial 16S rRNA and ND1 gene.
Keyword: 16S rRNA, Elapidae, ND1, phylogenetic relationship