The authors look at online tip exchanges as parts of gift economies created by the players and designers of console and online role-playing games in Taiwan. A group of experienced players and tip contributors agreed to be interviewed about the mechanisms and processes of providing free strategy guides on the Internet. Their comments reveal needs for social approval and networking in addition to...

oil industry is the largest economic sector in the country. but despite the insurance role in the energy insurance sector, the insurance industry’s share in the oil and energy presents an inappropriate combination. latest analysis and surveys show that during the last three years the premium experience a negative growth in each year with respect to its previous year and it also shows the premiu...

What is considered to be fair depends on context-dependent expectations. Using a modified version of the Ultimatum Game, we demonstrate that both fair behavior and perceptions of fairness depend upon beliefs about what one ought to do in a situation— that is, upon normative expectations. We manipulate such expectations by creating informational asymmetries about the offer choices available to t...

abstract background and purpose:vector-borne diseases such as malaria and leishmaniasis are still a public health problem in iran. one of the effective ways to prevent of these diseases is to improve the vector control program. we carried out this study for assessment managers of school knowledge, attitude and practice regarding vector control programs. materials and methods:a cross-sectional s...

BACKGROUND This article sought to elucidate how aspects of poverty and culture may contribute to race- and ethnicity-based disparities in cutaneous melanoma outcomes. METHODS We identified published studies addressing the social determinants of melanoma. Selected review articles included US-based studies comprised of patients representing adults, children, and adolescents. RESULTS African A...

A company or organization requires special unique strategies to achieve organizational goals which not only do bring about macro-and long-term goals, but also create competitive status for the organization. However, developing different strategies will not guarantee the organization’s success, but the implementation of strategy is the most important step in the entire life of strategic managem...

Abstract The purpose of this article is to present a system dynamics (SD) model for studying the ‎interconnections among human being weight, eating habit, exercise, body fat, take-in medication, drugs-uses, and the health problems in general. Due to the fact that all of these factors have direct and indirect impacts on the expenses that insurance company have to pay this author is proposing a ...