We investigate the complexity of counting the number of integer points in tropical polytopes, and the complexity of calculating their volume. We study the tropical analogue of the outer parallel body and establish bounds for its volume. We deduce that there is no approximation algorithm of factor α = 2 for the volume of a tropical polytope given by n vertices in a space of dimension m, unless P...

conclusions based on the path analysis model, working condition and socioeconomic status directly and indirectly influence birth weight. thus, as well as attention to treatment and health care (biological aspect), special attention must also be paid to mothers’ socioeconomic factors. results the final path model fitted well (cfi =1, rmsea=0.00) and showed that among direct paths, working condit...

Background: Recent evidence has indicated a deterioration in reproductive health of men in many countries over the past few decades, particularly a decrease in semen quality and an increase in prevalence of prostate cancer. The human male has a relatively low fertility potential as compared to other mammals. Thus, the human male may be at greater risk from reproductive toxicants. For example, t...

We propose and analyze variational source conditions (VSC) for the Tikhonov regularization method with $L^p$-penalties applied to an ill-posed operator equation in a Banach space. Our analysis is b...