Judul: Spatial Regression Approach in Determining Factors Affecting Percentage of Human Trafficking Victims inWest Java.
Abstrak: The spatial dimension plays a key role in many social phenomenons such as poverty, pollution, disease, crime and others. Social phenomenon in certain areas is influenced by the social phenomenon in other locations. One of the interesting social phenomenons that will be studied in this research is human trafficking in West Java. The aims of this study are to identify the spatial effects on percentage of human trafficking victims, and to determine the factors which affected percentage of human trafficking victims in West Java in 2010. The existence of spatial relationship information between district/municipality led to need to accommodate the spatial variability in the model, so that the model used were spatial regression models. Based on the analysis, spatial effect influential significantly the percentage of human trafficking victims. The hotspot for human trafficking victims were Cimahi Municipality, Bandung Municipality and Bandung District. The best model to accommodate spatial effect in this study was General Spatial Model (GSM) with AIC-value=-361.46 and R2a=71.34%. Based on GSM obtained the indepen-dent variables or factors which significantly affected percentage of human trafficking victims in West Java in 2010 for α=0.05 as follows: the average of population with divorce status, the average of population with local migrant status, and the average of population with maximum education in Junior High School.
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Judul: Model regresi spasial untuk deteksi faktor-faktor kemiskinan di Provinsi Jawa Timur
Abstrak: Poverty is one of the biggest problems in Indonesia. An approach to overcome this problem is to determine the factors that affect poverty usually using ordinary least square regression model (OLS). However, poverty is not only influenced by explanatory variables but also by various aspects related to surrounding locations. Therefore, this research employed spatial regression models, i.e. Spatial Autoregressive Models (SAR), Spatial Error Models (SEM), and Spatial General Models (SGM). Contiguity matrix is as spatial weighting matrix. The model selection criteria are the coefficient of determination (R2), slope regression of dependent variable to its estimator and the value of RMSE (Root Mean Square Error). The results show that SAR is better regression model than OLS and the factors that affect poverty are the percentage of people who did not complete primary school (SD), the percentage of people who drink another kind of water instead of drinking water, and the percentage of people who live in unhealthy houses with floor area at least 8 m2 per capita.
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Judul: Karakteristik Anatomi Skelet Kepala Buaya senyulong (Tomistoma schlegelii).
Abstrak: Buaya sepit atau senyulong (Tomistoma schlegelii) merupakan jenis buaya asli Indonesia yang berhabitat di sungai-sungai Sumatera, Kalimantan, dan juga pedalaman Sulawesi. Salah satu ciri khas buaya senyulong adalah bentuk moncong yang runcing dan sempit, namun hingga saat ini informasi mengenai struktur skelet kepala buaya senyulong sangat terbatas. Penelitian ini bertujuan untuk mempelajari karakteristik anatomi skelet kepala buaya senyulong yang dikatikan dengan fungsi dan perilakunya. Penelitian dilakukan secara eksploratif dengan melakukan pengamatan, pencatatan, dan pengambilan gambar dari skelet kepala buaya senyulong. Skelet kepala berukuran panjang 70 cm, lebar 29 cm, dan tingggi 17 cm dengan permukaan kasar pada os nasale, os frontale, os maxilla, os mandibula, os lacrimale, os jugale. Jumlah gigi pada buaya ini sebanyak 78 buah, terdiri dari 4 buah gigi premaxila, 16 buah gigi maxila, dan 19 buah gigi mandibula. Pada regio orbitalis ditemukan dua pasang fenestrae temporales yang berkembang baik. Fenestra supratemporale merupakan lubang oval yang membentang di sepanjang os parietale. Fenestra infratemporale berbentuk segitiga dan dibatasi oleh os squamosum, os postorbitale, os jugulare, dan os quadratum. Os mandibula hewan ini mempunyai symphysis mandibularis yang panjang yaitu garis yang melintang di corpus mandibulae. Secara fungsional ukuran symphysis mandibularis berkaitan dengan adaptasi hewan terhadap diet makan.
Keyword: kepala, moncong, Tomistoma schlegelii