Many portfolio optimization problems deal with allocation of assets which carry a relatively high market price. Therefore, it is necessary to determine the integer value of assets when we deal with portfolio optimization. In addition, one of the main concerns with most portfolio optimization is associated with the type of constraints considered in different models. In many cases, the resulted p...

Investment decision making is one of the key issues in financial management. Selecting the appropriate tools and techniques that can make optimal portfolio is one of the main objectives of the investment world. This study tries to optimize the decision making in stock selection or the optimization of the portfolio by means of the artificial colony of honey bee algorithm. To determine the effect...

Pollen beetles (Brassicogethes spp.) are the main pests of oilseed rape (OSR, Brassica napus) in Europe and responsible for massive yield losses. Upcoming pesticide resistances highlight need other means crop protection, such as natural pest control. Sown flower fields aim to counteract decrease insect biodiversity agricultural landscapes by providing resources ecosystem service providers. Howe...

Among all aspects of IT Portfolio Management (ITPM), we find the key concept of efficient frontier to be the most applicable illustration for managing IT resources as multiple heterogeneous IT portfolios. To better assist decision-makers (e.g., senior executives) in selecting the most qualified IT portfolio choice, we propose a new IT Portfolio Efficient Frontier model that incorporates decisio...

Investors use different approaches to select optimal portfolio. so, Optimal investment choices according to return can be interpreted in different models. The traditional approach to allocate portfolio selection called a mean - variance explains. Another approach is Markov chain. Markov chain is a random process without memory. This means that the conditional probability distribution of the nex...

Risk identification, impact assessment, and response planning constitute three building blocks of project risk management. Correspondingly, three types of interactions could be envisioned between risks, between impacts of several risks on a portfolio component, and between several responses. While the interdependency of risks is a well-recognized issue, the other two types of interactions remai...

The paradigm shift from testing the outcome to assessing the learning of process shines a light on the alternative assessment approaches, among which portfolio-assessment has sparked researchers’ interest in writing instruction. This study aimed at investigating the effect of portfolio-assessment on Iranian EFL students’ writing achievement through the process-centered approach to writi...

The following are highlights from Circulation: Heart Failure Topic Review. This series will summarize the most important articles, as selected by the editors, that have published in the Circulation portfolio. The objective of this series is to provide our readership with a timely comprehensive selection of important papers that are relevant to the heart failure audience. The studies included in...

Climate ethics is an emerging field. This paper serves as a critical introductory overview. It focuses on five areas of discussion that are particularly relevant to substantive climate policy: the treatment of scientific uncertainty, responsibility for past emissions, the setting of mitigation targets, and the places of adaptation and geoengineering in the policy portfolio .  2010 John Wiley &...

The following are highlights from Circulation: Heart Failure Topic Review. This series will summarize the most important manuscripts, as selected by the editors, that have been published in the Circulation portfolio. The objective of this series is to provide our readership with a timely comprehensive selection of important papers that are relevant to the heart failure audience. The studies inc...