This paper investigates the implications of matching and searching in inter rm trade. From a schematic model, whereby rms nd long-term trading partners by successive matches, we derive some important propositions. Trade between matched rms generates an expected economic pro t, depending on match quality, while trade between searching rms may be conducted at a short-term loss, being a form of ca...

Hormone-mediated maternal effects generate variation in offspring phenotype. In birds, maternal egg testosterone (T) exerts differential effects on offspring traits after hatching, suggesting that mothers experience a trade-off between contrasting T effects. However, there is very little information on T pre-natal effects. In the yellow-legged gull (Larus michahellis), we increased yolk T conce...

The energetic resources in an organism's environment are essential for executing a wide range of life-history functions, including immunity and reproduction. Most energetic budgets, however, are limited, which can lead to trade-offs among competing functions. Increasing reproductive effort tends to decrease immunity in many cases, and increasing total energy via supplemental feedings can elimin...

on one hand, iran due to the low annual rainfall and lack of appropriate spatial and temporal distribution in precipitation is considered as an arid and semi-arid country experiencing stress and water scarcity; on the other hand, 90% of annual water consumption has been allocated to agriculture sector in iran and efficiency and productivity of water consumption do not enjoy favorable status in ...

The Trade Offs approach is an advanced tool for the improvement of the discrimination of Data Envelopment Analysis (DEA) models, Meta Malmquist Index was defined by Maria Portella and et. al (2008). In this paper we compute the Meta Malmquist Index in Trade Offs model in DEA and we compare, obtaining results, of Meta Malmquist Index in different models of DEA, Variable Return to Scale (VRS), Co...

We examine a standard, gravity model of international commerce, augmented to include political as well as institutional influences on bilateral trade. Using annual data from 1980-2001, we estimate regression coefficients and residual dependencies using a hierarchy of models in each year. Rather than gauge the generalizability of these patterns via traditional measures of statistical significanc...

In this paper we develop a speci cation of requirements and conceptual design of a decision support system for the maintenance of the lamps in tra c regulation systems Requirements and design are both speci ed using semiformal techniques in TRADE Toolkit for Requirements and Design Engineering The decision support system is non trivial and provides an existing need in a company that works in th...

IN T RODUC T ION Desmopressin (1-desamino-8-D-arginine vasopressin), Figure 1, (trade names: DDAVP, Stimate, Minirin) is a peptide containing nine amino acids, a form of the normal human hormone arginine vasopressin that reduces urine production. It may be taken nasally, intravenously, or as a tablet. Desmopressin is most commonly prescribed for the treatment of diabetes insipidus or nocturnal ...

the Web: Wildlife Trade on the Internet. International Fund for Animal Welfare, London. 41 p. http://www.ifaw.org. KOCH, V., W.J. NICHOLS, H. PECKHAM & V. DE LA TOBA. 2006. Estimates of sea turtle mortality from poaching and bycatch in Bahía Magdalena, Baja California Sur, Mexico. Biological Conservation 128: 327-334. MARQUEZ-M., R. 1990. FAO species catalogue. Vol. 11: Sea Turtles of the World...