Judul: Food Coping Strategy Rumah Tangga Yang Tinggal Di Wilayah Rawan Pangan Dan Gizi Kabupaten Banjarnegara, Propinsi Jawa Tengah
Abstrak: According to Food Insecurity Atlas, Banjarnegara is included of insecurity food area. In this area, there are food security household and food insecurity household. Food insecurity household is need the strategy to maintain the food intake. The general objective of this study is to analyze household food coping strategy in food insecurity area, Banjarnegara, Central Java. The specific objectives are to identify sosio-economic characteristics of household, to identify history of food insecurity in food security and food insecurity household, to analyze correlation of food coping strategy level with socio-economic characteristics of household and levels of household security. A descriptive analytic study with cross sectional approach was conducted on 2 areas (Pejawaran and Punggelan) of Banjarnegara. Sample was chosen with simple random sampling which consists of 300 household with children 2-5 years old. Data collected include : socio-economic characteristics of household, history of food insecurity,household food coping strategy, level of household food security, and nutritional status of under-five children. Descriptive analytic was carried to all variables followed by bivariate test using Spearman correlation. In correlated analysis, sosio-economic characteristics (parents education level, total of expenditure ), was significantly negative correlated with level of food coping strategy. The age of mother was significantly positive correlated with level of food coping strategy. Level of household food security was significantly negative correlated with level of food coping strategy.
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Judul: Keterkaitan antara tingkat ketahanan pangan rumah tangga dengan status gizi anggota keluarga di wilayah Kabupaten Banjarnegara Propinsi Jawa Tengah
Abstrak: According to situation of food and nutrient analysis in Province of Central Java, Regency of Banjarnegara include food insecurity area in Indonesia. Food insecurity showed low of household consumption level in that area. Low of household consumption level in household food insecurity cause bad impact, especially nutritional status of household member. The aim of this study is to understand the correlation of household food security with nutritional status of household member, especially in food insecurity area. A descriptive analytic study with cross sectional approach was conducted on 2 areas (Pejawaran and Punggelan) of Banjarnegara. Sample was chosen with simple random sampling which consists of 300 household with children 2-5 years old. Data collected include: sosio-economics household characteristic, household consumption level, history of household food security, and nutritional status of household member. Descriptive analytic was carried to all variables followed by bivariate test using Pearson and Spearman correlation. Measurement of household food security in this study used household overall energy intake. In correlated analyses, large of household was significantly negative with · household food security. Parent's education level and nutritional knowledge was significantly positive with household food security. Measurement of household insecurity with qualitative method was not sensitive to measured household food insecurity but specific to measured household food security. Household food security was significantly positive correlated with nutritional status of under-five children and adult.
Keyword: Measurement of food security and insecurity, Nutritional, Household member

Judul: Hamiltonian formulation for linear waves motion in two layers fluid
Abstrak: The surface wave could be considered as a wave that separates two fluids, namely water and air. Based on this assumption, it is introduced the interfacial wave, a wave between two layers of fluid with different density. The formulation of interfacial waves motion begins with deriving the base equation of irrotational ideal fluid. Furthermore, according to irrotational fluid assumption, the base equation can be stated in velocity potential. In this derivation, the fluids domain is assumed to be restricted by rigid lid boundary conditions, both at the upper and lower limit. Therefore, the interfacial waves motion can be explained in a hamiltonian formulation. In the hamiltonian formulation, total energy is defined as the sum of kinetic and potential energy. The hamiltonian system is obtained from reduction of kinetic energy by using the Dirichlet Neumann Operator. The resulted kinetic energy equation is nonlinear. Therefore, this form is linearized by first part of the Taylor expansion. This linearization gives a dispersion relation of linear wave. Based on this dispersion relation, the phase speed of the linear wave depends on the density ratio of the two layers fluid.
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