Judul: Ordinal Logistic Regression Model and Biplot Analysis to Determine Factors Influencing Backward Region Status.
Abstrak: The functions of State Ministry of Acceleration of Development in Backwards Regions are to formulate national policy in the field of development in backwards region sector, to implement the policy, to organize stated-owned properties or assets, to supervise the implementation of its duty, to submit the evaluation report, suggestion and consideration in its assignment and function to the President. In order to reach these objectives, the government needs to understand the prior concern so development will be effective and efficient. Therefore, it is important to analyze the relevant factors that influence the backward region status. The objective of this research were to determine factors influencing the backward region status to provide good policy and appropriate allocation of assets or fund. Ordinal logistic regression and biplot were used to analyze the status of backward regions with 33 explanatory variables. The explanatory variables identified as significant factors were the percentage of poor people, poverty index, the percentage of malnutrition children under five, live expectancy, the percentage of access to health infrastructure, average number of drop out elementary school students, the percentage of family using electricity, the percentage of rural areas without nonpermanent market, average distance between “kantor desa”(village office) and “kantor kabupaten”(district office), and the percentage of rural areas with critical land. To analyze the regional disparity (between east and west), biplot was implemented and the variables were clustered according to the regional differences.
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Judul: Relationship Among Budget Structure and Tipology of Regional problems for Optimazing Regional Development Performance.
Abstrak: The financial crisis beginning in medio 1997 that led to economic turbulence has exerted a negative impact on the economic condition. This condition made development performance became quite low and instable. The misallocation of budget also influenced regional development performance. This fenomena create idea that needs a study about relationship between budget structure and tipology of regional problems for optimizing regional development performance. The purpose of the research are (1) to identify profile of development performances; (2) to measure disparity development among regencies/municipalities in the provinces of West Java and Banten; (3) to measure the correlation among budget structure, tipology problems and development performance; (4) to find principal indicators of development performance. These research use the analytical tool such as: (1) Tabulation Analysis; (2) Location Quotient; (3) Williamson's Index; (4) Correlation and (5) Natural Logarithmic Regression. The result of this research indicates that (1) The structure of economics among regencies/municipalities have led sectors in West Java and Banten. Some regencies/municipalities led in manufacture industries, such as Bekasi (82.87 percent), Bogor (49.27 percent), Purwakarta (44.80 percent), Cilegon (61.84 percent), and Tangerang (56.28 percent). Some regencies/municipalities give large contribution in agriculture sectors such as Subang (42.89 percent), Garut (40.96 percent), Cirebon (37.47 percent), Lebak (40.35 percent), and Pandeglang (36.13 percent); (2) There are lack of development among regencies/municipalities. Williamson's Indices for West Java and Banten are 0.4158 and 0.5846. The figures indicate that disparity of development in Banten is higher than that in West Java; (3) The correlation between growth of Gross Domestic Regional Product (GDRP) and illiteracy rate shows negative coefficient (-0.8) with P-Value 0.000; (4) In the whole are relationship among performance of development, structure of budget and tipology of regional problems. The regression coefficient of allocation of education budget is 0.419. Meanwhile the regression coefficient rate of illiteracy is -0.580. This model have P-Value, Multiple R and R Square respectively 0.000, 0.913 and 0.834. All of the result of the research conclude that (1) The Improving of the matching among the budget patern and tipology regional problems will optimize regional development performance (2) The available of competence human resources will speed the regional development performance.(3) The Larger contribution of education budget will increase the regional development performance.
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Judul: Pengaruh Suhu terhadap Pembentukan Kalsium Fosfat Tersubstitusi Fluor pada Kondisi Supersaturasi
Abstrak: Fluorapatit telah disintesis menggunakan metode hidrotermal dengan variasi suhu hidrotermal (160 ºC, 180 ºC, 200 ºC, 220 ºC). Sumber kalsium berupa CaO didapat dari hasil kalsinasi cangkang telur ayam, sedangkan sumber fosfor dan fluor yang digunakan adalah (NH4)2HPO4 dan NH4F. Fluorapatit dikarakterisasi dengan XRD, FTIR dan SEM-EDX. Hasil XRD menunjukkan bahwa sampel fluorapatit sudah terbentuk. Namun, terdapat impuritas berupa Ca(OH)2 akibat proses nukleasi yang kurang sempurna. Pertambahan suhu hidrotermal tidak memberikan pengaruh yang signifikan terhadap intensitas puncak-puncak fluorapatit. Spektra FTIR juga mendukung data XRD bahwa fluorapatit telah terbentuk yang ditunjukkan oleh gugus fungsi OH- dan PO43- pada seluruh sampel. Disamping itu, Citra SEM menunjukkan bahwa seluruh sampel memiliki morfologi yang seragam dengan bentuk tidak beraturan, menyerupai bunga karang, dan membentuk aglomerasi dengan ukuran partikel berkisar antara 1.285 μm sampai 1.615 μm.
Keyword: fluorapatit, FTIR, hidrotermal, SEM-EDX, XRD