Judul: Perancangan Tata Letak Pabrik Pengolahan Tepung Ubi Jalar (Ipomoea batatas).
Abstrak: Sweet potato productivity is not balanced with proper utilization. The current utilization sweet potato in Indonesia are still many processed into refined products household. Sweet potato potential can be maximized when processed into semi-finished materials that sweet potato flour is more economically valuable. Sweet potato flour industry has not been quite a lot and still dominated by small and medium industries. Problems which are commonly among other processed that are not hygienic, fluctuating product quality, and sewage treatment potluck. The problems is caused by there is no awareness of owners implement systems plant layout. This research aims to make the design plant layout of the processing plant sweet potato flour that has layout and material flow so that the process is faster dan tidy. The research is divided into two stages, the planning and implementation stages of the design plant layout. Design of plan layout made at the planning stages. From the design plant layout then caried out the aplication form of trial production. Ends with technological analysis and product analysis. Result of the analysis set Ciampea worthy as the plant site. Based on the selection process of the production and selection of equipment generating plant with an installed capacity of 107 kg/day and a maximum capacity of 214 kg/day. Design the layout using a systemic approach to see the connection between the activity and the relationship between space. The result of design layout is factory site plan along with the material flow from the receipt of raw materials to product storage (Lampiran 5). Based on the result of product analysis indicates that the product has been produced according to the standard flour products dan standard sweet potato flour product in Indonesia.
Keyword: design, layout, plant layout, flour, sweet potato

Judul: Design of layout Production Room and Equipment at the Purple Potato Chips Production House in Ciloto Village
Abstrak: Unit usaha keripik ubi ungu Desa Ciloto merupakan unit usaha yang memproduksi keripik yang saat ini mulai banyak digemari masyarakat, sebagai makanan ringan (snack). Terdapat beberapa masalah pada tata letak ruang produksi yaitu terdapat dwifungsi ruang produksi dengan pesantren, ketidaksesuaian allowance, area kerja terpisah, adanya backtracking, dan higienitas tempat produksi. Permasalahan tersebut menyebabkan produksi keripik ubi ungu belum maksimal dan belum memenuhi standar CPPOB (Cara Produksi Pangan Olahan Yang Baik). Penelitian ini bertujuan memberikan rekomendasi usulan tata letak kepada rumah produksi keripik ubi ungu Desa Ciloto. Metode yang digunakan dalam perancangan ulang tata letak pada penelitian ini adalah BLOCPLAN (Block Layout Overview with Layout Planning). Hasil dari penelitian berupa prototipe tata letak ruang produksi sejumlah 5 departemen/ruang produksi keripik ubi ungu dengan luas total ruang produksi sebesar 53,63 m2 total jarak penanganan bahan 78,48 m dan efisiensi tata letak sebesar 0,87., The Purple Sweet Potato Chips business unit in Ciloto Village is a business unit that produces chips which are now starting to be popular with the public, as snacks. There are several problems in the layout of the production room, namely there is a dual function of the production room with a boarding school, inappropriate allowances, separate work areas, backtracking, and hygiene of the production site. This problem causes the production of purple sweet potato chips has not been maximized and has not met the CPPOB standard (Good Processed Food Production Methods). This study aims to provide recommendations for the layout of the purple sweet potato chips production house in Ciloto Village. The method used in redesigning the layout in this study is BLOCPLAN (Block Layout Overview with Layout Planning). The results of the study were in the form of a prototype production room layout of 5 departments/rooms for purple sweet potato chips production with a total production area of 53.63 m2, a total material handling distance of 78.48 m and a layout efficiency of 0.87.
Keyword: BLOCPLAN, CPPOB, Purple Sweet Potato Chips, Layout

Judul: Metrik Einstein (Anti-) Self-Dual Berdimensi Empat dengan Metode Cartan
Abstrak: Gravitational field equation can be formulated in differential forms (differential geometry), which describes gravity as a manifestation of the curvature of space-time. Curvature of space-time is characterized by a metric that satisfies the gravitational field equation. With differential forms it can be formulated the (anti-) self-dual Einstein equation, which is a modification of the Cartan structure in (anti-) self-dual basis. Calculation of (anti-) self-dual metric with (anti-) self-dual Einstein equation is simpler than the calculation using Christoffel symbols.
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