El nanche es una especie que desarrolla en condiciones de trópico, con suelos marginales. La investigación se planteó el objetivo evaluar la variación morfológica frutos silvestre. Para desarrollo recorrieron los alrededores del municipio Cuajinicuilapa, Guerrero, México; donde ubicaron 200 árboles producción frutos, éstos recogieron suelo y trasladaron al Laboratorio Facultad Medicina Veterina...

Suaeda iranshahrii Akhani & Freitag, previous specimens cited as S. maritima,is described as a new species of sect. Brezia endemic to the coasts of the Persian Gulf; it is subdivided into the type variety distributed along the Persian side and var. arabica Freitag from the Arabian shore. The new species is named in honour of Dr. Musa Iranshahr, the eminent Iranian botanist to whom this Festschr...

Four large lysimeters on the San Dimas Experimental Forest, each filled with similar parent material and planted with monocultures of native species in 1946, provide a unique opportunity to quantify short-term effects of plant species on soil properties. The four species under which soils were investigated are scrub oak (Quercus dumosa Nutt.) , chamise (Adenostoma fasciculatum Hook. and Am.), c...

Econometrics has become an integral part of training in modern economics and business. Together with microeconomics and macroeconomics, econometrics has been taught as one of the three core courses in most undergraduate and graduate economic programs in North America. In China, the importance of econometrics has been increasingly recognized and econometric tools and methods have been widely emp...

Many important probabilistic models in queuing theory, insurance and nance deal with partial sums of a negative mean stationary process (a negative drift random walk), and the law of the supremum of such a process is used to calculate, depending on the context, the ruin probability, the steady state distribution of the number of customers in the system or the value at risk. When the stationary ...

The martingale di¤erence sequence hypothesis is important in economics and …nance, as illustrated by (e.g.) the e¢ cient market hypothesis. Moreover, from a statistical point of view, before modeling the conditional mean dynamics, one may …rst like to know whether the dynamics in mean does exist and is statistically signi…cant. Furthermore, if the dynamics in mean exists, one may like to know w...

The orchid-bee faunas (Hymenoptera: Apidae: Euglossina) of the three largest forest remnants in the "Centro de Endemismo Pernambuco", northeastern Brazil, namely Estação Ecológica de Murici (ESEC Murici), RPPN Frei Caneca, and a forest preserve belonging to Usina Serra Grande, in the states of Alagoas and Pernambuco, were surveyed using seventeen different scents as baits to attract orchid-bee ...

In this study, the relation between consumer credit and real economic activity during the Great Moderation is studied in a dynamic stochastic general equilibrium model. Our model economy is populated by two diff erent household types. Investors, who hold the economy’s capital stock, own the fi rms and supply credit, and workers, who supply labor and demand credit to fi nance consumption. Furthe...