Judul: Investment Opportunity and Strategy in Developing Laccifer Lacca KERR Cultivation Bussines : Case Study at KPH Probolinggo Perum Perhutani Unit II East Java
Abstrak: Shellac flea Laccifer lacca Kerr is a kind of fitofag insect, which is living at Kesambi Tree (Schleichera oleosa Merr). During its life cycle, shellac flea has been producing secretion in liquid form, known as LAK and having many uses, such as varnish/polish, food cover, drug capsule, cassette ribbon, etc. In 2005, Perum Perhutani has produced 60 547 kg LAK pellets, but has not fulfilled yet market demand. Cultivation technique is still conducted in a very sampling, and easy to be studied. Investment in developing shellac flea is also profitable, and promising. There are two choices of management schemes in it cultivate, the first is by infecting shellac flea to the host tree when the tree is 15 years old (project I) and the second is by infecting shellac flea when the tree is 4 years old (project I). Financially, the Project II is more beneficial than Project I, so that the investment for project II is reasonable to be done. The value of NPV + 22 321 052 395, IRR 16.9%, BCR 1.55 and Net B/C 3.71 with discounted payback period for 10 year 8 months. SWOT analyzing was used in design strategy to face the competition in business world. Strategy of SO (Strength Opportuniy) in SWOT analyzing could be applied in Perum Perhutani to develop shellac flea cultivation in the future.
Keyword: 

Judul: Business Model Design and Financial Feasibility Analysis for UPLCT
Abstrak: Rajungan merupakan salah satu komoditas hasil laut yang memiliki potensi pengolahan yang besar dari hasil daging dan cangkangnya. Pemanfaatan cangkang atau limbah padat rajungan dapat diolah menjadi berbagai jenis produk dengan nilai tambahnya yang berbeda-beda. Limbah padat yang dihasilkan dari pengolahan rajungan memiliki jumlah sebanyak 60% dari total berat rajungan. Hal ini menunjukkan bahwa potensi dari cangkang rajungan ini sangat besar dan perlu dimanfaatkan dengan baik. Permasalahan saat ini dari cangkang rajungan adalah penyebarannya yang tidak merata dan jumlahnya yang beragam. Proyek desain utama ini bertujuan mendesain model bisnis yang kolaboratif yang dapat menyediakan bahan baku cangkang sesuai dengan kebutuhan industri pengolah cangkang. Hasil validasi prototipe menunjukkan bahwa rancangan solusi yang diberikan diterima dan dapat menjawab permasalahan yang ada. Berdasarkan hasil penelitian juga dapat diambil kesimpulan bahwa UPLCT layak untuk dijalankan dilihat dari aspek finansial dengan kriteria nilai NPV lebih dari 0 (Rp201.257.103), IRR lebih dari Suku Bunga Dasar Kredit (SBDK) ritel BRI (8,25%) yaitu 14,67%, B/C Ratio lebih dari 1 (1,3), dan payback period kurang dari asumsi umur proyek 20 tahun (4,93 tahun)., Blue swimming crab is one of the marine product commodities that has great processing potential from its meat and shells. The utilization of crab shells can be processed into various types of products with different added values. The solid waste generated from crab processing accounts for as much as 60% of the total crab weight. This shows that the potential of this crab shell is very large and needs to be utilized properly. The current problem of crab shells is their uneven distribution and varying amounts. This main design project aims to design a collaborative business model that can provide shell raw materials according to the needs of the shell processing industry. The prototype validation results show that the solution design provided is accepted and can answer existing problems. Based on the research results it can also be concluded that UPLCT is feasible to run from a financial perspective with criteria for an NPV value of more than 0 (Rp201,257,103), IRR is more than BRI's retail prime lending rate (SBDK) (8.25%), namely 14.67%, the B/C ratio is more than 1 (1.3), and the payback period is less than the assumed project life of 20 years (4.93 years).
Keyword: Crab shell, Financial, Feasibility

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.
Keyword: