This study is an attempt to determine how much individuals should invest in social communication, depending on the type of relationships they may form. Two simple models of social relationships are considered. In both models, individuals emit costly signals to advertise their "quality" as potential friends. Relationships are asymmetrical or symmetrical. In the asymmetrical condition (first mode...

In the current practice of industrial research and development (R&D) management tools are playing an increasing important role. The growing need for alignment of R&D with business objectives, market-driven strategies and investment risk reduction are the drivers for employing portfolio management techniques. This paper proposes use of a financial portfolio management approach as a tool enabling...

This paper investigates the role of social identification in investment decisions. Social identity is an aspect of self-image based on in-group preferences and a perception of belonging to a social group. We collected survey data from retail clients of the only two banks in the Netherlands that exclusively offer socially responsible investment products and savings accounts. Our data show that a...

The study of memory for event duration in pigeons has, for the most part, centered on an unusual behavioral phenomenon and an interesting theoretical explanation for it. A typical experiment on memory for event duration involves trials initiated by a sample stimulus that is either short or long in duration (e.g., 2 vs. 10 sec of houselight) and that is later followed by the simultaneous present...

This paper explores the general-equilibrium impact of social security portfolio diversiŽ cation into private securities, either through the trust fund or private accounts. The analysis depends critically on heterogeneities in saving, production, assets, and taxes. Limited diversiŽcation weakly increases interest rates, reduces the expected return on short-term investment (and the equity premium...

Abstract In this study , the relationship between investment components in sport and social capital is examined and the population in this research consists of 55 marketing consultant of Iranian soccer league sports sponsors. The research tool is also a questionnaire and for data analysis the statistical software spss and structural equation modeling method graphics Amos were used. In theoret...

the purpose of this study was to determine factors influencing people participation in rural reclamations plans.the research method was descriptive-correlation and data collected using questionnaire. statistical population of the research comprised 3400 villagers at hoveize county. 246 members was randomly selected using cochran formula and applying random sampling method. validity of the instr...