Encontrados 20 documentos, a visualizar página 1 de 2

The fisheries dissipative effect modelling through dynamical systems and chaos ...

It is presented a very simple mathematical model to study the dissipative effect in fisheries, based in dynamical systems and in its approach through chaos theory. Actually, due to constant misconducts, forgetting their consequences and only prosecuting easy profits, the risk of extinction is very real for fisheries resources. From it results the importance of this kind of models.

Convex Sets Strict Separation in Hilbert Spaces

Convex sets separation is very important in convex programming, a very powerful mathematical tool for operations research, management and economics, for example. The target of this work is to present Theorem 3.1 that gives sufficient conditions for the strict separation of convex sets.

The Partnership as a Factor of Sustainable Growth for the Companies in the Info...

In the last decade, some companies in the field of information technology had been significant growth while others have not reached the same results. We also observed that some of these companies began to adopt strategies with a focus on partnership. There are a number of questions about the partnership as a factor of sustainable growth for the companies in the information technology Sector. This article presen...

Unemployment Modelled Through M

Using results on the M; G; ∞ queue busy period, it is presented an application of this queue system in the unemployment periods parameters and distribution function study.

Modelling enforcement and compliance in fisheries: a survey

Monitoring and enforcement considerations have been largely ignored in the study of fishery management. This paper discusses this issue with a formal model to show the impacts of costly, imperfect enforcement of law on the behaviour of fishing firms and fisheries management. Theoretical analysis combines a standard bio-economic model of fisheries(Gordon/Schaefer) with Becker’s theory of Crime and Punishment.

A note on “anticommons” on aquaculture projects approval

A set of texts on the theory of anti-commons have been published in the last decades concerning the study of property rights. When “anti-commons” emerge resources are prone to be underused because there are too many rights of exclusion. This may be seen in many areas, either social or economic. In Portugal, the processes of aquaculture projects approval depend on too many people (and institutions) decisions. Th...

The concept of weak convergence in Hilbert spaces

Chaos in humanities and social sciences: an approach

Social and political events and chaos theory - the "drop of honey effect"

The applications of chaos theory began first by natural sciences and then follow to the humanities and social sciences. Since the beginning got rapidly a developing field. Chaos is extremely complex and difficult to be identified in the real life. But using the available information, it is possible, anyway, up to a certain extent, to find specific mathematical relationships for problems to be solved. In this wo...

“Crime and punishment”: the ethical fundaments in the control regime of common ...

Monitoring and enforcement in fisheries have been largely neglected in the study of management in this field. A formal model of fisheries law enforcement is presented to show how fishing companies perform their activities and how fisheries policies are affected by costly, imperfect enforcement of fisheries law. The model developed combines standard Economics of Fisheries analysis (Gordon/Schaefer model) and the...