In this paper, we investigate po-purity using finitely presented S-posets, and give some equivalent conditions under which an S-poset is absolutely po-pure. We also introduce strongly finitely presented S-posets to characterize absolutely pure S-posets. Similar to the acts, every finitely presented cyclic S-posets is isomorphic to a factor S-poset of a pomonoid S by a finitely generated right con...

The color in the aleurone cells of maize early attracted the attention cf geneticists as affording ideal material for testing the segregation of characters in the second generation of hybrids. The first cases that were investigated led to the idea of only one unit o r factor being involved in the production of an aleurone color. With the progress of investigation, however, it became necessary t...

This commentary highlights the discrepancy between traditional pediatric norms of children’s behavior and evolved abilities exhibited by children in modern societies, accentuated technological advancements. The author suggests a global reassessment developmental to provide more accurate references for pediatricians when evaluating child development behavior.

Individual actions such as the purchase of a machine or the changing or a price are often discrete and infrequent. Macroeconomic models, however, often ignore this intermittent behavior. In this paper, we present conditions under which a representative agent model, which ignores discrete adjustment on the individual level, is observationally equivalent to a model that takes discrete adjustment ...

Using an example from animal cognition, I argue that the problems of bias—inherent in choosing null hypotheses or setting Bayesian priors—can sometimes be avoided altogether by collecting more and better observational data before up tests any sort.

We analyze the optimal coverage level for an unreliable insurance contract if a utility-maximizing policyholder can transfer intrinsic nonperformance risk to several co-insurers. Our discussion starts with demand model under default and introduction of multiple risk-sharing instrument called co-insurance policy. Subsequently, we examine interrelation between recovery rate level, utility policyh...