We study the terms of credit in a competitive market in which sellers (lenders) are willing to repeatedly …nance the purchases of buyers (borrowers) by engaging in a credit relationship. The key frictions are: (i) the lender is unable to observe the borrower’s ability to repay a loan; (ii) the borrower cannot commit to any long-term contract; (iii) it is costly for the lender to contact a borro...

investment plays a vital role on economic growth. one of the main objectives of all countries is to achieve sustainable economic growth and development. nowadays, a considerable amount of activities performed by the managers and investors in general is to make a portfolio of assets effectively meeting demand goals. in this study, mean-variance markowitz model by cardinality constraints and also...

Introduction All health systems exercise some form of purchasing, which, in its most basic form, constitutes the allocation of funds to provider organizations. When purchasing goes beyond the simple reimbursement of products and services and is aligned to societal healthcare needs and wishes, it has the potential to play a key role in determining a health system’s overall performance. However, ...

Educational technology (edtech) products are ubiquitous in schools, but a paucity of research has evaluated their impact on education outcomes. Herein we describe a platform (i.e., LearnPlatform) that enables users to integrate and analyze data to rigorously evaluate the impacts of edtech. The platform also enables users to mine large and diverse datasets to identify patterns and trends in edte...

The professional Electronic Leadership Portfolio (ELP) is an effective method for the promotion of Information and Communication Technology (ICT) in the educational arena, both as a model for aspiring leaders and as a model for the necessary development of skills in teachers. Furthermore, the ELP provides a framework for future measurement of leadership skills and development as well as providi...

The study here focuses on portfolio construction of mid cap companies, its optimization and throws up some important topics for further research. Issues discussed include the key inputs necessary to perform optimization, Markowitz Model, Single Index Model methods evaluation overvaluation undervaluation securities.

The success of quantitative approaches to portfolio choice crucially depends on the considered return model. Experts however do not agree on which return model is most appropriate. This controversy about the model specification introduces uncertainty in the optimal portfolio choice. We will not meddle in the discussion on which model specification is most appropriate. Instead we consider the ad...