In this paper, we compare the force expressions in both comoving synchronous and Ellis coordinate systems Friedman-Robertson-Walker spacetime order to understand how transformation affects inertial forces. We also studied negative energy problem system. The Penrose process is possible outside apparent horizon due fact that line element has off-diagonal term. However, only movement towards infin...

Table 1. Experimental values of the Cm half-life (in years). Reference Author(s) Value Measurement method 1954Fr19 Friedman et al. 17.9 (5) α-activity relative to Cm 1954St33 Stevens et al. 19.2 (6) α-activity relative to Cm 1961Cao1 Carnall et al. 17.59 (6) Specific activity 1968Be26 Bentley 18.099 (32) a 2π α-counting 1972Ke29 Kerrigan and Dorsett 18.13 (4) Calorimetry 1982Po14 Polyukhov et a...

This paper describes a method for imputation in general contingency tables when the imputations are subject to both analytic (edit) constraints and probabilistic distributional constraints. The model extends edit ideas in Fellegi and Holt (1976) and Winkler and Chen (2002). The model extends missing-at-random imputation ideas in Little and Rubin (1987). Some of the ideas are related to Friedman...

This paper describes a method for imputation in general contingency tables when the imputations are subject to both analytic (edit) constraints and probabilistic distributional constraints. The model extends edit ideas in Fellegi and Holt (1976) and Winkler and Chen (2002). The model extends missing-at-random imputation ideas in Little and Rubin (1987). Some of the ideas are related to Friedman...

the purpose of this study was to evaluate the rate of using standards of designing electronic courses in educational contents of state-virtual universities in iran. the method of the study was a descriptive-survey one. the statistical population was the educational content of electronic courses in state-virtual universities such as university of science and technology, and shiraz university. da...