Pengendalian Persediaan terhadap Distribusi Beras Raskin pada Perum Bulog Divre Jabar

Agricultural development in Indonesia is one of the important aspects of national development in term national income contribution. The one of problems in agricultural development is how to manage the stock, especially Raskin. Several aspects that important to note in case of Raskin management are: to safe the base price of grain purchase, Raskin distribution for poor people, to keep national stock for emergencies and another public purpose to control the market price. This study apply quantitative method with analysis data method using partial regression statistics to find out the influence of stock control toward Raskin distribution in Perum Bulog Divre Jabar. The result of this research show if the value of stock control is 0.017K<0.05, Ho is rejected and Ha is accepted. It means Raskin stock control has significant influence toward the distribution in Perum Bulog Divre Jabar

Figure of Merit for Dark Energy Constraints from Current Observational Data

Choosing the appropriate figure of merit (FoM) for dark energy (DE) constraints is key in comparing different DE experiments. Here we show that for a set of DE parameters {f_i}, it is most intuitive to define FoM = 1/\sqrt{Cov(f1,f2,f3,...)}, where Cov(f1,f2,f3,...) is the covariance matrix of {f_i}. The {f_i} should be minimally correlated. We demonstrate two useful choices of {f_i} using 182 SNe Ia (compiled by Riess et al. 2007), [R(z_*), l_a(z_*), \Omega_b h^2] from the five year Wilkinson Microwave Anisotropy Probe (WMAP) observations, and SDSS measurement of the baryon acoustic oscillation (BAO) scale, assuming the HST prior of H_0=72+/-8 km/s Mpc^{-1} and without assuming spatial flatness. We find that the correlation of (w_0,w_{0.5}) [w_0=w_X(z=0), w_{0.5}=w_X(z=0.5), w_X(a) = 3w_{0.5}-2w_0+3(w_0-w_{0.5})a] is significantly smaller than that of (w_0,w_a) [w_X(a)=w_0+(1-a)w_a]. In order to obtain model-independent constraints on DE, we parametrize the DE density function X(z)=\rho_X(z)/\rho_X(0) as a free function with X_{0.5}, X_{1.0}, and X_{1.5} [values of X(z) at z=0.5, 1.0, and 1.5] as free parameters estimated from data. If one assumes a linear DE equation of state, current data are consistent with a cosmological constant at 68% C.L. If one assumes X(z) to be a free function parametrized by (X_{0.5}, X_{1.0}, X_{1.5}), current data deviate from a cosmological constant at z=1 at 68% C.L., but are consistent with a cosmological constant at 95% C.L.. Future DE experiments will allow us to dramatically increase the FoM of constraints on (w_0,w_{0.5}) and of (X_{0.5}, X_{1.0}, X_{1.5}). This will significantly shrink the DE parameter space to enable the discovery of DE evolution, or the conclusive evidence for a cosmological constant.Comment: 7 pages, 3 color figures. Submitte

Supply Chain N Logistik dalam Kaitannya dengan Ketahanan Pangan di Pedesaan

Rural contribution of to the Indonesian economy more and more diminish, this is due to a lack of public understanding to run business activity in rural. Lack of rural contribution in Indonesia could be impact to the competitiveness of Indonesia in the era of the MEA (AEC). This study is examines the development of supply chains in rural to support agricultural enterprises by building an effective supply chain begin from farmer suppliers, distributors and retailers.There must be cooperation with the various parties involved in the supply chain activities.The results from this study show that the manage of logistics the agricultural product can not stand alone but must be managed together with the components of the supply chain so that primacy to compete the agricultural product Indonesia can superior from other countries