Judul: Analisis pengaruh food coping strategy terhadap ketahanan pangan rumahtangga petani di kabupaten Lebak Banten
Abstrak: The general objective of this research was to analyze the influence of score of food coping strategy toward household food security. The particular objectives of this research were to: 1) Identify household food security; 2) identify the characteristics food access of sample (size of family, father’s education, father’s occupation, family’s income, education and nutritional knowledge of the mothers, and social support); 3) Identify the food coping strategy in farmer’s household; 4) Identify the person who do the food coping strategy in farmer’s household; 5) Analyze the correlation between score of food coping strategy and household food security; 6) Analyze the influence factors of household food security. The research was conducted by using cross sectional study design from April to May 2009 in Kabupaten Lebak Banten. Sample was chosen by purposive sampling resulting in 101 households. The results show that 63.4% samples in household’s level were in food secure condition and 25.7% samples were in serious food insecure condition. Half of samples (49.5%) included in the small households (with 4 members of household or less). Generally, in age, most of the paterfamilias (57.4%) were in medium adult category (40 – 59 years). The dissemination of mother’s age were in the early adult category, that is 46.5% and 47.5% of mothers were in the medium adult category. Almost of all the mother (87.1%) included in low nutritional knowledge group. Spearman Correlation Test shows that the score of coping strategy have no significant correlation with household food security and the size of household has negative significant correlation with household food security (r=-0.270; p<0.01). The number of farm areas that owned by the farmer’s households have positive significant correlation with their household food security (r=0.309; p<0.01). It means that larger farm area that owned by the farmer’s household implied the better condition of household food security. However, Pearson Correlation Test shows that consumption of energy has negative significant correlation with score of coping strategy (r=-0.208; p=<0.05). It means that the higher score of coping strategy implied little in consumption of energy. It shows the decrease of food security condition. Regretion Test shows the factors that influence the household food security, for instance, number of farm area that owned by farmer household, poverty status, size of household, score of coping strategy, and alocation of food expenditure.
Keyword: 

Judul: Analisis jalur faktor-faktor yang mempengaruhi ketahanan pangan rumahtangga di Kabupaten Lebak, Provinsi Banten
Abstrak: The objective of this research were to: 1) identificate household socio economic characteristics and food acses, 2) analyze household consumption level and household food security level, 3) analyze relation of socio economic factors and household food security, 4) analyze impact of direct factors and indirect factors to household food security. This research was conducted by using cross sectional design. The location was in Pasindangan and Banjarsari Village, Cileles and Warunggunung Subdistrict, Lebak Distric that chosen purposively with concideration that farmer's household. The sample were 101 househholds. The result of the research shows that almost all (62.4%) household were household food security, household food insecurity in heavy level (7%), household food insecurity in moderate level (5%), and household food insecure (26%). factors that significantly relation with household food security were size of household, own of land, and household expenditure per capita. Direct factor that influence household food security was household expenditure expenditure per capita. Indirect factors that influence household food security were size of household – household expenditure per capita – household food security.
Keyword: 

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.
Keyword: