this research aims to design the portfolio entrepreneurship model and to analyze the effect of social capital, prior experience and knowledge, the entrepreneur’s financial resources, as well as human capital on portfolio entrepreneurship and also to investigate the effect of portfolio entrepreneurship on recognition of new opportunities, as well as business growth and development. the research ...

Investing in existing customers is widely accepted as a promising strategy because it is believed to be less costly than attracting new ones. Recent research by Reinartz et al. [39] provides indications, however, that it could also be profitable to simultaneously focus on a customer segment being more transaction-oriented. In this contribution – using the example of an e-tailer – we specificall...

Using pooled cross-sectional data from the Surveys of Consumer Finances, and new panel data from TIAA-CREF, we examine the empirical relationship between age and portfolio choice, focusing on the observed relationship between age and the fraction of wealth held in the stock market. We illustrate and discuss the importance of the well-known identification problem that prevents unrestricted estim...

We consider the portfolio delegation problem in a world with potentially incomplete contingent claim markets. A principal hires an agent to manage a portfolio. When the agent has limited liability (that is, there is a lower bound on the compensation contract), she may have an incentive to take on excessive risk. With complete markets, the precise nature of the risk the agent may take on is a la...

The current research aims to identify the barriers faced by candidates during implementation of e- portfolio in an educational environment. How implement e-portfolio at College Education, Sultan Qaboos University light theory diffusion innovation. sample consisted 122 out 233 field-training from undergraduate students all disciplines University. applied descriptive approach, and tool is a quest...

The usefulness of stress tests as risk management tool crucially depends on the choice of stress scenarios: if the scenario is too implausible, the stress test results will be ignored by management. Unfortunately, there is no generally accepted standard how to choose scenarios. Many institutions apply some standardized scenarios derived from extreme market moves in the past. A substantial drawb...

Pricing of options on stocks that are driven by multi-dimensional coupled price-temporal infinitely divisible fluctuations. We model the price of a stock via a Langévin equation with multi-dimensional fluctuations coupled both in the price in time. We generalise previous models in that we assume that the fluctuations conditioned on the time step are assumed to be compound Poisson processes with...

We model the price of a stock via a Langévin equation with multi-dimensional fluctuations coupled both in the price in time. We generalize previous models in that we assume that the fluctuations conditioned on the time step are compound Poisson processes with operator stable jump intensities. We derive exact relations for Fourier transforms of the jump intensity in case of different scaling ind...

Predictions about investor portfolio holdings can provide powerful tests of asset pricing theories. In the context of Markowitz portfolio selection problem, this paper develops an algorithm which determines the structural parameters in both the investor's return-generating process and the utility function based upon the actual portfolio choices made by each investor. We refer to this problem as...

Introduction: The portfolio can be seen as a tool for assessmentof a variety of learning activities that differ in content, usage, andassessment. The portfolio not only meets the learner’s educationalneeds but also the political and public reassurance demand thatthe health professional has achieved the required competency ofthe curriculum that allows him or her to practice safely with orwithout...