Judul: Arahan Pengembangan Agribisnis Komoditas Ubi Kayu Dalam Rangka Pengembangan Wilayah di Kabupaten Cianjur Wilayah Selatan Provinsi J awa Barat
Abstrak: Cianjur Regency has 92.534 ha of dry land areas designated for cultivation, and 52% of dry land is located in the southern area (Bappeda Cianjur Reg@r, 2011). The dry land is commonly used for such purposes as household yards'::I:rainfed agriculture, upland/plantation and open grassland, while the remaiing is bare land therefore the dry land has not been used optimally. The main 8Jmmodities of dry land farming are cassava, maize, upland rice, and beans. The dW land in southern Cianjur is cultivated by intercropping. Cianjur is center of casSava production. The harvested cassava in Cianjur reached 7.881 ha in 2012 and 6􀁻26 ha in 2013, 37% of the area is located in the southern area. Cassava comrm;nly processed for directly consumed food products, such as tape and chips. At sO.§:hern Cianjur, cassava is also processed into pearl tapioca and chips for indus@al raw material supplier. Cianjur regency government through Cianjur Reger! Decree Number 520/ KEP-240 DISTAN/ 2012 established 4 districts at South;}=ianjur (Cidaun, Sindang Barang, Cibinong and Agrabinta) as center of cassa􀁼. Cassava has important role to meet the food needs and industrial devel􀁽ment. Cassava value added could be realized through agribusiness devel􀁾ment therefore contribute to regional development. [IlAccording to the text above, it is necessary to know how large the cassava produ8tion potential which determined by considering the availability of suitable land 􀁿d cassava productivity of intercropping patterns cultivation. Therefore it can be estimated industry requirement to absorb all cassava production for raw material. It is important to analyze financial feasibility of the cassava industry in order to assess the profit and region value added. It's expected that the subject above could formulate cassava agribusiness direction in order to regional development in southern part of cianjur regency. The objective of the study were: 1) to analyze the land suitability and land availability for the development of cassava based on spatial techniques in Geographic Information Systems; 2) to analyze cassava farm business by intercropping cultivation; 3) to analyze farmers opinion and experts opinion on the development of cassava agribusiness 4) to analyEij financial feasibility of cassava processing technologies and its cont􀂀tion to Cianjur regency value, and 5) to formulate cassava agribusiness direJ§>n in order to regional development. -,Availability dry land for Cassava farming in Cianjur southern region was 10.05»ha or 11,36% of the suitability land. The two largest area of availability landtmere marginally suitable (S3) at shrub (25,14%) and marginally suitable at dry l􀂁@ (20,16%). Cassava in South Cianjur is commonly cultivated on dry land by i􀀃rcropping. Two patterns of intercropping commonly used by farmers was inten:;Cjlpping of cassava-upland rice-peanut and cassava-chili-maize and ginger. RetuAA: cost ratio was greater than one. for various patterns of intercropping cassaGJ. with other commodities. It showed that the benefit was higher than the cost so intercropping of cassava and other commodities was profitable. The high􀂂return cost ratio was 4.18 for intercropping cassava (mangu variety) with :::J < CD -, CJ) r-+ '< Chilli, maize and ginger. Meanwhile, the highest productivity was 35 ton per hectare for intercropping cassava (mangu variety) with peanuts. Cassava industry products considered for
Keyword: value added, dry land farming, farm business, intercropping, the suitability ����� and availability land

Judul: Analisis pendapatan dan efisiensi teknis usahatani padi lahan kering dengan pendekatan stochastic frontier :  di Desa Tanggeung, Kecamatan Tanggeung, Kabupaten Cianjur, Jawa Barat
Abstrak: Meningkatnya angka pertumbuhan penduduk Indonesia merupakan salah satu tantangan berat yang dihadapi oleh sektor pertanian. Jumlah penduduk yang semakin meningkat ini memiliki efek berbanding lurus dengan permintaan terhadap konsumsi pangan, salah satunya pada peningkatan permintaan padi. Pada tahun 2003, total produksi padi nasional mencapai 51.49 juta ton, dimana 95 persen diantaranya berasal dari lahan beririgasi (irrigatted land) dengan hasil rata-rata sebesar 4.69 ton/ha dan 5 persen dihasilkan dari lahan-lahan kering dengan rata-rata produksi 2.47 ton/ha (Badan Pusat Statistik, 2004). Lahan pertanian terdiri dari sawah beririgasi (irrigated land) sebesar 26.63 persen, tadah hujan (rainfed) sebesar 7.58 persen dan lahan kering dataran tinggi (upland) mencapai 66 persen dari total potensi lahan pertanian di Indonesia. Dari data ini terlihat bahwa Indonesia memiliki potensi dalam pengembangan pertanian di lahan kering dataran tinggi (Syaukat, 2004). Propinsi Jawa Barat sebagai salah satu sentra produksi padi di Indonesia memiliki potensi luas lahan sawah yang cukup luas dengan kualitas yang bagus, selain itu, Jawa Barat memiliki potensi sumberdaya upland yang cukup besar, yakni 32 persen dari total luas area pertanian. Kabupaten Cianjur merupakan salah satu kabupaten dengan potensi sumberdaya upland terluas di Jawa Barat. Pada tahun 2003 luas lahan kering yang ditanami padi di Kabupaten Cianjur menurun sebesar 25 persen, berdasarkan gambaran ini perlu dilihat keragaan usahatani lahan kering, tingkat pendapatan dan efisiensinya. Modal dan tenaga kerja merupakan faktor yang mempengaruhi produksi secara langsung. Karakteristik petani lahan kering adalah rendahnya modal yang dimiliki sehingga pruduktivitas usahataninya rendah karena kebutuhan input-input yang dibutuhkan usahatani padi tersebut tidak dapat dipenuhi. Selain itu petani juga menganggap usahataninya sebagai usaha sampingan sehingga pengelolaannnya menjadi tidak optimal. ...
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Judul: Estimating Parameter and the Convergence of Parameter Estimator of Poisson Hidden Markov Model
Abstrak: Model hidden Markov terdiri dari sepasang proses stokastik yaitu proses observasi dan proses yang memengaruhi observasi. Proses stokastik yang memengaruhi observasi ini diasumsikan membentuk rantai Markov dan tidak diamati. Model Poisson hidden Markov (MPHM) adalah salah satu model hidden Markov diskret dan proses observasinya jika diketahui proses yang memengaruhinya diasumsikan menyebar Poisson., A hidden Markov model (HMM) consists of a pair of stochastic processes, that is the observation process and process that affected observation. The stochastic process which causes this observation is assumed to form a Markov chain and is not observed. Poisson hidden Markov models (PHMM) is one of the discrete HMM and the observation process given the cause is assumed having a Poisson distribution.
Keyword: Poisson hidden Markov model, Forward-Backward algorithm, Expectation Maximization algorithm