Since its discovery shortly after the International Geophysical Year, the terrestrial magnetosphere has been under intensive study with satellites and ground-based instrumentation. We have a fairly good picture of its main structural features and the dynamic behavior of its multiple…

References on historical and recent earthquakes in Oaxaca City, or that have caused in other localities of the Oaxaca state from 1542 until 1988, are reviewed. Macroseismic data are used to define sets of similar earthquakes. On the basis of…

Acknowledgement: I have express my deep homage to all people who have made this paper a manifested reality from a latent intent. I have put all concerted efforts and protracted endeavors to recordial evidence the contributions. Inadvertently and in deliberately…

Abstract: We give a consubstantiated and consolidated model for the items classified in the paper and discuss various aspectionalities and attributions of the system as stability analysis, Solutional behaviour, and asymptotic analysis. Concomitant theorems are derived. Physical interpretation is provided…

Postulation predication, conclusive presumption, differential presuppositions, underscored decidedly axiomatic statement whether someone's belief is true is not a prerequisite for (its) belief. On the other hand, if something is actually known, then it categorically cannot be false. For example, if…

The paper investigates the pricing of derivative securities with calendar-time maturities.

In the presence of moral hazard, received agency theory predicts the Marshallian inefficiency of agricultural tenancy contracts, meaning that inputs per hectare on sharecropped land will differ from that on owned land. in this paper, we test for the presence…

Learning English has become a mandatory skill that many people should have. There are many reasons why people decide to study English as a second language, for example: to improve their financial situation, travel around the world, work abroad, communicatewith…

There is a great importance in the learning of English as a second language, although it has embraced difficulties such as the lack of participation in the classroom. So that, this study rose from the need to address a problem…

In this article we study the effect of uncertainty on an entrepreneur who must choose the capacity of his business before knowing the demand for his product. The unit profit of operation is known with certainty but there is no…