Judul: Regional Study for Small Industry Development Based on Supreme Commodities of Agriculture in Majalengka Regency.
Abstrak: Agriculture is a basic sector in Majalengka Regency, but it still has a weak sectoral linkages with agro-processing industries. On the other hand, a region development requires the presence of a synergistic integration among economic sectors to avoid stagnation state. This study aimed to : (1) identify the comparative-competitive of agricultural leading commodities based on acreage, (2) identify the land suitability for commodity development; (3) identify the villages based for small industries agro-processing, (4) identify the villages having high level of the facilities services and accessibility for supporting industry; (5) determine the sites for small industries and its commodity development. The analytical methods used were analysis of the location quotient (LQ), shift share analysis (SSA), schallogram analysis and land suitability analysis. The study focused on commodities of agricultural i.e. corn, mango, soybean, bananas and melinjo. The results showed that corn was superior in six districts, mango was superior in 13 districts, soybean was superior in one district and bananas was superior in two districts. However, no district was superior to melinjo. There were 21,837 ha of land that phisically suitable for corn, 53,049 ha for mango, 4,074 ha for soybean and 15,837 ha for banana. There were 179 villages classified as basic for small agro-processing industries. Villages with the high level of facilities services and accessibility consisted of 44 villages. There were 7 industrial villages and 8 industrial areas (consisted of several villages), that could be developed as a small industries in the region based on agricultural supreme commodities. The priority areas for commodity development comprise 2,827 hectares for corn, 15,221 hectares for mango, 3,328 hectares for soybean and 304 hectares for bananas.
Keyword: agro-processing industry, comparative-competitive advantage, land suitability, Majalengka, regional study

Judul: Pembangunan subsektor tanaman bahan makanan dalam pengembangan wilayah di Kabupaten Majalengka
Abstrak: Food crops subsector is expected to be a strategic sector for regional development in Majalengka regency in the future because it based on local resources. The purposes of this study are : (1) identifying condition and potency of food crops subsector in Majalengka regency, (2) identifying the role of food crops subsector in regional economy, (3) identifying superior commodities, (4) exploring perceptions of stakeholders regarding food crops development priorities (5) formulating the direction of food crops subsector development for regional development in Majalengka. The data analysis used are Location Quotient (LQ), Shift Share, Input-Output (I-O), Analytical Hierarcy Process (AHP), land suitability and avaibility evaluation. The result showed that food crops subsector is a basis sector with some commodities have superiority in planting area, harvesting area, production and number of trees. Food crops subsector has the highest contribution in gross regional domestic product (GDP) up to 23,80% and contributed to total output up to 16,23%. However, it has low linkages with other sectors. An analysis result in macro, meso and micro levels showed that paddy, corn, soybean, mangos, banana and melinjo are superior commodities in Majalengka regency. Based on stakeholders perception, three of the priority commodities are paddy, corn, and mangos. While, the priority of agribusiness subsystem is on farming system and supporting aspects of the priorities is improving human resources. The direction in the development of food crops subsector are to improve the performance and enhance the role and linkages with other sector.
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Judul: Bifurkasi Hopf Pada Sistem Persamaan Van Der Pol Dengan Gaya Luar Yang Periodik
Abstrak: Dalam penelitian terhadap suatu tabung triode tertutup, Van der Pol menemukan suatu model berupa persamaan diferensial tak linear yang selanjutnya dikenal dengan persamaan Van der Pol. Dalam tulisan ini dipelajari persamaan van der Pol tanpa gaya luar dan dengan gaya luar yang berupa fungsi periodik. Dengan pengskalaan waktu diturunkan sistem persamaan Van der Pol yang lebih sederhana yang selanjutnya dianalisis kestabilannya. Dalam bentuk persamaan Van der Pol tanpa gaya luar, eksistensi limit cycle dapat ditunjukkan dengan Teorema Lienard. Sedangkan untuk sistem persamaan Van der Pol yang melibatkan gaya luar yang periodik, eksistensi limit cycle dipengaruhi oleh perubahan nilai parameter tertentu. Untuk beberapa nilai parameter sistem tidak mempunyai limit cycle. Dalam kondisi ini sistem tersebut mempunyai suatu titik tetap yang bersifat sadel. Penentuan eksistensi limit cycle untuk sistem persamaan Van der pol dengan melibatkan gaya luar yang periodik dilakukan dengan bifurkasi Hopf.
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