Judul: Redesign of the Layout of the Vegetable Commodity Postharvest Process Facility at the Cisarua Vegetable House
Abstrak: Rumah Sayur Cisarua memiliki fasilitas proses yang merupakan bantuan dari JICA (Japan International Cooperation Agency). Permasalahan tata letak di Rumah Sayur Cisarua yaitu adanya aliran bahan backtracking, terdapat cross contamination di antara ruang receiving dan ruang pengemasan, serta belum adanya pengaturan tata letak mesin dan peralatan. Tujuan penelitian ini adalah melakukan re-desain fasilitas proses di Rumah Sayur Cisarua. Metode yang digunakan yaitu SLP (Systematic Layout Planning). Hasil re-desain fasilitas proses memiliki aliran bahan yang lebih teratur dan total jarak penanganan bahan lebih kecil dari kondisi awal yaitu dengan peningkatan efisiensi 7,86%. Sementara re-desain tata letak fasilitas menghasilkan lima alternatif. Alternatif I memiliki total jarak penanganan bahan 44.131,83 m per minggu dan total biaya penanganan bahan Rp 307.652 per minggu, alternatif II memiliki total jarak penanganan bahan 43.420,8 m per minggu dan total biaya penanganan bahan Rp 302.055 per minggu, alternatif III memiliki total jarak penanganan bahan 41.651,43 m per minggu dan total biaya penanganan bahan Rp 291.193 per minggu, alternatif IV memiliki total jarak penanganan bahan 34.022,37 m per minggu dan total biaya penanganan bahan Rp 242.651 per minggu, serta alternatif V memiliki total jarak penanganan bahan 34.019,49 m per minggu dan total biaya penanganan bahan Rp 242.626 per minggu.
Keyword: re-desain, sayur, SLP, tata letak, layout, redesign, vegetable

Judul: Redesign of the Layout of Production Facilities at the Bread Production House in Cipanas District
Abstrak: The bread production house in Cipanas sub-district is one of the fostered businesses of IPB and Astra International which was developed by seven villages including Batulawang Village, Ciloto Village, Cimacan Village, Cipanas Village, Palasari Village, Sindanglaya Village, and Sindangjaya Village. The bread production house was inaugurated in March 2022 and is still in the preparation and development stage. Things that must be improved regarding the production facility layout are the placement of the toilet door that is not in accordance with the CPPB- IRT rules, the placement of equipment that does not pay attention to the movement of the material flow so that there is backtracking, and the placement of proofing stations and baking stations that are far apart from each other resulting in longer distanc for workers. This study aims to create an alternative layout of a new production facility layout that can improve the weaknesses of the previous layout. The method used is an engineering design approach which includes the stages of exploration, problem verification, ideation, prototype development, and prtotype validation. The production facility layout redesign was carried out usuing the CORELAP algorithm. The result of the selected production facility layout provide a total displacement distance in one production batch of 90,92 m with material handling costs of Rp.77.471,00.
Keyword: CORELAP, distance efficiency, layout, material handling costs

Judul: Approximation of the Median of Poisson Distribution Using the Relation of Poisson-Gamma Distribution
Abstrak: A major drawback of median is that median cannot usually be defined in closed form, even in the cases where their distribution functions are known. This study gives an approximation of the closed form for the median of the Poisson distribution by using the relation of Poisson-Gamma distribution. The approximation uses elementary techniques based on the monotonicity of certain sequences involving tail probabilities of the Poisson distribution and the Central Limit Theorem. Furthermore, a closed form expression for the mean absolute deviation 􀜧|􀜰􀰒 􀵆 􀜯􀝁􀝀􁈺􀜰􀰒􁈻| is also studied. The median is relevant because of the fact that it minimizes the mean absolute deviation of a Poisson random variable (􀜰􀰒􁈻 by considering median as central tendency.
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