Judul: Analisis kinerja kelembagaan pangan local terhadap peningkatan ketahanan pangan rumahtangga miskin di Kasepuhan Sinar Resmi Kabupaten Sukabumi
Abstrak: Ketahanan pangan merupakan sektor yang rentan terhadap kemiskinan. Hal ini dapat dilihat dari tingkat kerawanan pangan dan status gizi buruk yang meningkat di daerah dengan tingkat kemiskinan yang tinggi. Namun, di Kasepuhan Sinar Resmi yang masyarakatnya tergolong miskin dengan sistem kelembagaan lokal yang baik tingkat kerawanan pangan dan status gizi buruk tidak terlalu signifikan. Oleh karena itu, diperlukan penelitian untuk mengetahui dampak adanya kelembagaan terhadap peningkatan ketahanan rumahtangga miskin di masyarakat Kasepuhan, Kabupaten Sukabumi yang dilaksanakan selama bulan April 2011 dengan menggunakan data primer dan sekunder. Analisis data yang digunakan dalam penelitian ini adalah deskriptif dan biaya transaksi.
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Judul: Peranan PUAP dan Raskin Dalam Perilaku Ekonomi dan Ketahanan Pangan Rumahtangga Petani (Kasus di Kecamatan Sadang, Kabupaten Kebumen)
Abstrak: The aim of this research is to descriptive performance of economic household and food security also analyze role of PUAP in paddy production and role of raskin in food consumption so that programs can improve agriculture household food security. This research used survey method to paddy peasant that received PUAP and raskin. To analyze performance of household food security used descriptive analysis by food availability, ratio food expenditure of total household revenue and number of energy sufficiency indicators. And to analyze role of PUAP and raskin in agriculture household food security used agriculture household model that consisted of 14 structural equations and 7 identities. The result indicated that paddy production used to household consumption so that for non food and human resources investment expenditure used income from non agriculture activity. Food security problem of 75% household sampel is food purchasing power that indicated by highly ratio food expenditure of total household revenue so that number of energy sufficiency have not been able to fulfill. PUAP not only has increased production so that increased food availability, but also increased non food expenditure. Raskin has reduced food expenditure but increased number of PUAP and raskin has decreased number of energy sufficiency. According to analysis result, production input subsidy will be effectice and efisien to increased paddy production so will improve household food availability and increase peasant revenue. Number of raskin need to increase adjusted to real rice need of household and also need high protein subsidy to increase number of energy sufficiency.
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Judul: The Exploration of Discrete Logarithm over Finite Field GF(3m)
Abstrak: The security of many public~key algorithms is based on the problem of finding discrete logarithms. The generalized discrete logarithm problem is the following: given a finite cyclic group G of order n, a generator a of G, and an element fl E G, find the integer x, 0 ~ x ~ n - 1, such that 0: = fl. Algorithm for discrete logarithm problem focused on Menezes et al. (1997) that consist of exhaustive search algorithm, the baby-step giant-step algorithm, Pollard's rho algorithm, Pohlig-Hellman algorithm, and index-calculus algorithm. These algorithms are explorated to be used in discrete logarithm problem over finite field GF(3m ). The exploration also produces some algorithms, i.e. naif negative algorithm, baby-step mother-step algorithm, baby-step mother free-step algorithm, and baby-step free-step algorithm. All algorithms implemented using Maple 11. The Pohlig-Hellman and baby-step giant-step algorithms are efficient enough to be used in discrete logarithm problem over finite field GF(3m ) for m < 20.
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