Judul: Spatial Autoregressive Poisson Model for Detecting Influential Factors on the Number of patients with Malnutrition in the Province of East Java
Abstrak: One indicator of poverty can be seen from the large of people with malnutrition. Genesis residents suffer from malnutrition in the Province of East Java is a rare occurrence, so the incidence of people suffering from malnutrition can be assumed to follow a Poisson distribution. Although the incidence of people suffering from malnutrition including a rare occurrence, but malnutrition is a serious problem that requires special handling because it has led to the decline in resource quality. For that use spatial autoregressive Poisson models to detect factors that influence the number of people with malnutrition. Based on the results of this study was obtained that the factors that influence the number of people with malnutrition are spatial and non-spatial. Spatial factor that predispose to a particular location is the location of the neighbors. This means that the number of people with malnutrition in a region or a nearby location will affect the number of malnourished people in the surrounding locations. While non-spatial factors that influence the number of people with malnutrition are the number of families residing in the slums, the area of land use structure is not enough irrigation, the number of health workers living in rural or village, and the number of per capita gross regional domestic product. The coefficient of determination for the SAR Poisson model was 0.57. Based on the scan statistic method obtained four clusters of hotspot areas.
Keyword: 

Judul: Factors Determination that Influence Food Insecurity in Central Java Using Spatial Panel Data Analysis
Abstrak: Food insecurity refers to the consequence of inadequate consumption of nutritious food at region, society or household, considering the physiological use of food by the body as being within the domain of nutrition and health. Sutawi (2008) explained that availability and achievability on aggregate scale, Indonesia citizen is appertained food secure. However, household with food insecure still found in almost whole provinces with high proportion. So, it is necessary to do a research to determine factors that influence food insecurity in a province by calculating spatial effect of inter-regency or municipality. In this research, food insecurity that will be analyzed is food insecurity in Central Java using spatial panel data analysis. Cross-section unit in this research is 35 regencies or municipalities in Central Java province which was observed for 4 years (2007-2010) as time series unit.The analysis result in this research show that fixed effect model with SAR are better used for modelling food insecuity in Central Java. This model show that production of paddy (X2) and local government original receipt of regency or municipality (X3) influence percentage of citizen with food insecure that consume calorie under basic requirement 2100 kkal/capita/day (Y) with R2 95.88%. Coefficient of λ indicates that spatial autoregressive effect significant in influencing percentage of citizen with food insecure in Central Java.
Keyword: 

Judul: Ulasan Eterifikasi Gliserol dan Isopropil Alkohol Menggunakan Katalis Karbon Aktif dari Ampas Tebu
Abstrak: Gliserol merupakan produk samping pembuatan biodiesel dari reaksi transesterifikasi, dapat dikonversi menjadi eter gliserol yang berpotensi sebagai aditif bahan bakar diesel. Penelitian ini bertujuan menyintesis senyawa mono-, di-, dan tri-isopropil eter gliserol dari reaksi eterifikasi gliserol dan isopropil alkohol dengan karbon aktif teraktivasi sebagai katalis menggunakan data primer dan sekunder. Katalis karbon aktif yang teraktivasi asam akan berubah. Perubahan tersebut antara lain adalah meningkatnya ukuran pori, keasaman, dan luas permukaan. Penggunaan katalis karbon aktif teraktivasi asam selama 24 jam menghasilkan produk yang lebih spesifik, dengan jumlah katalis 5%. Kajian pustaka menunjukkan bahwa karbon aktif dari ampas tebu memiliki aktivitas katalitik yang baik dalam konversi gliserol. Konversi gliserol mencapai 80% dalam waktu yang relatif singkat (4 jam). Gugus sulfonat dapat dimasukkan ke dalam karbon dari ampas tebu. Kehadiran gugus sulfonat dalam struktur yang fleksibel dan hidrofilik kemungkinan menjadi faktor peningkatan kinerja katalitik dari karbon.
Keyword: ampas tebu, eterifikasi, gliserol, karbon aktif