Judul: Perilaku produksi dan konsumsi rumahtangga petani padi di Sulawesi Tenggara
Abstrak: The objectives of this study are : (1) to analyse the profit efficiency and factors affecting inefficiency of profit for paddy and non-paddy farming based on the technology and wetland agro-ecosystem, (2) to assess the response of output supply and input demand toward the changes of output and input prices based on wetland agro-ecosystem, (3) to asses the response of farm households’ consumption toward the changes of output and input price and the households’ income based on the wetland agro-ecosystem and profit efficiency, and (4) to compare the response of farmer households’ consumption as pure consumer and their response as producer and consumer based on wetland agro-ecosystem, and the profit efficiency. The stochastic frontiers profit function, and output and input share functions were used to analyse the production behavior, whilst, the Almost Ideal Demand System Model was used to analyse the consumption behavior. The research findings showed that the rice farm households for irrigated lands with improving technology have the highest profit efficiency compared to others. Inefficient profit was influenced by the experices of farmers in farming, education level and the number of family member. The parameter estimation results by employing output and input share function showed that there was the greater impact of rice price toward output supply and inputs demand compared to fertilizer price. Meanwhile, the household expenditure share function showed that the rice farmers around the area of research were responsive for price changes of rice because rice is a main commodity, but they were less responsive on price changes of fertilizer. Aventhough they were responsive on the changes of rice price, but it became less sensitive when they were as producers and consumers. The policy implications and further research suggestions are: (1) to increase the productivity and profitability of rice farming still require wisdom specific technology and irrigation facilities development, (2) to enhance farmers' income needs to improve the price policy through improving the Government Purchasing Price standard of rice, and (3) for further research, the nutrient content of fertilizer should be considered on the production analysis, and the types of farm household and the kinds of data should be expanded, as well as, the distinguish type of purchased food should be based on the nutrient content by using the farm households model.
Keyword: Southeast Sulawesi, Almost Ideal Demand System

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.
Keyword: 

Judul: Cycle Hamilton pada Graf Lengkap, Graf Regular, dan Graf 2-Connected 4-Regular Berorder Kurang dari Sepuluh.
Abstrak: Suatu graf disebut graf Hamilton apabila graf tersebut memuat cycle Hamilton, yaitu cycle yang melewati setiap vertex tepat satu kali. Menentukan keberadaan cycle Hamilton pada suatu graf dapat menggunakan syarat cukup yang berupa teorema-teorema yang telah diperkenalkan sejak tahun 1950-an. Beberapa syarat cukup yang dibahas dalam karya ilmiah ini adalah syarat cukup yang berhubungan dengan graf lengkap dan graf regular. ,,,
Keyword: graf Hamilton, graf regular, graf lengkap, graf 2-connected 4-regular.