There has been a continuing growth in urbanisation in developing countries, and governments’ face a major challenge in ensuring that city dwellers are able to procure sufficient food. Street foods are sold in almost every country in the world. In most towns and cities in Ghana, selling of...

The study focuses on the HIV/AIDS in Khartoum state during the period (2003-2007). The main objectives are to study the situation of HIV/AIDS in Khartoum state through a sample of 1439 of volunteers for the three selected blood testing and counseling centers in Khartoum, Omdurman, and Khartoum...

The present paper introduces results of an analysis conducted on data collected from Khartoum state for the yea 2009. It aims to apply statistical models for the HIV/AIDS data in Khartoum state centers of testing blood and counseling. AIDS is recognized as an emerging disease only in the early...

Based on the simple model of the deposit the methodology of finding the optimal solution for bilateral monopoly (BM) of lignite mine and power plant is shown taking into account pit optimisation. It is proposed to treat lignite price negotiation as a kind of game. In the first stage...

The United States has state of the art technology and world renowned expertise in medical treatment, yet in terms of healthcare it shows a dramatically poor performance in relation to the other industrialized countries. This situation is surprising, since one would expect that a free market...

Every minute, at least one woman dies from pregnancy and childbirth complications; a further 20 suffer injury, infection or disease. Despite medical advances, and years of policy declarations, this tragic situation remains particularly severe in developing countries, violating a fundamental...

This paper summarizes reactions to the theory of contestable markets and industry structure. The reactions came immediately after the theory was published. The summary finds that the proposed theory stands on sound grounds. However, empirically the theory leaves much to be desired especially for...

A substantial number of studies have extended the work on universal properties in physical systems to complex networks in social, biological, and technological systems. In this paper, we present a complex networks perspective on interfirm organizational networks by mapping, analyzing and...

The impact of quality on the demand facing health care providers has important implications for the industrial organization of health care markets. In this paper we study the consumers' choice of general practitioner (GP) assuming they are unable to observe the true quality of GP services. A...

This paper describes how state-of-the-art methods of choice modeling can be used to analyze consumer choice behavior in "competitive" health insurance markets. I use the insurance choices of senior citizens in the U.S. as an example. I then consider the issue of whether consumers benefit when we...