Academic Inputs

Robust portfolio selection with polyhedral ambiguous inputs

 Ambiguity in the inputs of the models is typical especially in portfolio selection problem where the true distribution of random variables is usually unknown. Here we use robust optimization approach to address the ambiguity in conditional-value-at-risk minimization model. We obtain explicit models of the robust conditional-value-at-risk minimization for polyhedral and correlated polyhedral am...

Primary Inputs

New inputs

Unless we look anew at agriculture in terms of the balances between wider benefits and impacts and link this to current and future societal drivers, we will continue to pay lip service to the concept of sustainability without ever developing ways to achieve it, they argue. Part of the problem in facing the future is the remarkable past achievements. In recent decades there has been a huge growt...

Inputs and Outputs in Islamic Banking System

Evaluation of performance and productivity is among the fundamental concepts inmanagement. In order to achieve their goals, organizations must evaluate theirperformance. One of the important stages of performance appraisal is evaluation oforganization’s efficiency. Banks, financial and credit institutions are among the mostimportant organizations of every economic system, because every activity...

THE EFFECT OF MEASURED SCHOOL INPUTS ON ACADEMIC ACHIEVEMENT: EVIDENCE FROM THE 1920s, 1930s AND 1940s BIRTH COHORTS

The study presented here uses data from the NORC General Social Surveys to explore the effects of measurable school characteristics on student achievement. What separates this study from many others is the use of aggregate data on older cohorts, usually associated with research on the influence of school inputs on earnings. We fmd substantively large effects, similar in size to those found in m...