Judul: Prototipe Rancang Bangun Sistem Informasi dan Komunikasi Online Usaha Kecil Menengah (UKM) Agroindustri Berbasis Web
Abstrak: Usaha kecil dan menengah (UKM) agroindustri mempunyai peran besar dalam pembangunan ekonomi nasional. Tujuan penelitian ini adalah merancang suatu sistem informasi dan komunikasi online yang dapat membantu masyarakat untuk memperoleh informasi mengenai UKM agroindustri. Sistem informasi AGROIND v 1.0 menyajikan informasi tentang bahan baku, produk, pemilihan teknologi, komponen biaya, analisis laba-rugi, kriteria kelayakan, komunikasi online, serta informasi tambahan mengenai UKM agroindustri. Penelitian dilakukan dengan teknik pendekatan sistem, terdiri dari analisis kebutuhan, formulasi permasalahan, identifikasi sistem, dan verifikasi sistem. Verifikasi meliputi pengujian sistem dengan sebuah sampel data komoditas jamur tiram dan produk olahan kerupuk jamur tiram. Hasil perhitungan analisis keuangan untuk contoh produk kerupuk jamur tiram adalah NPV sebesar Rp264 126 863, payback period selama 2.82 tahun, dan net benefit/cost sebesar 1.63. Penyediaan data untuk AGROIND v.1.0 dapat dikembangkan untuk komoditas serta produk olahan agroindustri lainnya.
Keyword: Bogor Agricultural University, Institut Pertanian Bogor, IPB, Small and Medium Enterprises, Information systems, Online communication, Website, Financial feasibility

Judul: Prototipe Rancang Bangun Sistem Informasi dan Komunikasi Online Usaha Kecil Menengah (UKM) Agroindustri Berbasis Web.
Abstrak: Small and medium agroindustrial enterprises had a potential role in national economic development. The purpose of this research was to design a system of information and online communication that could provide people on gaining information about small and medium agroindustrial enterprises. The information systems called AGROIND v.1.0 provided information on raw materials, products, technology selection, cost of investment, benefit and cost analysis, feasibility study, online communication, and some additional information about small and medium agroindustrial enterprises. This research used system approach, consist of needs analysis, problem formulation, system identification, and modeling verification. Oyster mushroom and mushroom crackers industry data were used for model verification. The results of financial analysis showed that NPV was Rp264 126 863, payback period was 2.82-year, and benefit cost ratio was 1.63. AGROIND v.1.0 should be developed for other agro-processed commodities and products by added other validated data.
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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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