The classical portfolio problem is a problem of distributing capital to a set of securities. By generalizing the set of securities to a set of investment strategies (or security-rule pairs), this study proposes an investment strategy portfolio problem, which becomes a problem of distributing capital to a set of investment strategies. Since the investment strategy portfolio problem can be formul...

This paper reported on a decision support system (DSS) for strategic planning on pig farms. The DSS was based . on a stochastic simulation model of investment decisions (ISM). ISM described a farm with one loan and one building using 23 variables. The simulation model calculated the results of a strategic plan for an individual pig farm over a time horizon of a maximum of 20 years for a given s...

Optimal resource allocation in security has been a significant challenge for critical infrastructure protection. Numerous studies use game theory as the method of choice, because of the fact that an attacker can often observe the defender’s investment in security and adapt his choice of strategies accordingly. However, most of these models do not explicitly consider deterrence, with the result ...

We analyze information security investment decisions by two firms that possess imperfectly substitutable information assets. Information assets are imperfectly substitutable if information at each firm is valuable and becomes more valuable when combined. When compared to optimal investment decisions made by a central planner, we find diametrically opposite results in the case where these decisi...

As in most developing countries, farm households Ethiopia are often engaged several income diversification activities to mitigate risks and uncertainties faced by agriculture address poverty food insecurity. The benefits of have been widely documented the literature. However, little econometric evidence exists on drivers among Ethiopia. paper addresses this information gap investigating choice ...

We report on a set of 40 semi-structured interviews with information security executives and managers at a variety of firms and government agencies. The purpose of the interviews was to learn more about how organizations make cybersecurity investment decisions: how much support they receive to execute their mission, how they prioritize which threats to defend against, and how they choose betwee...

Security investment problems are mostly highly-nonlinear and have huge operations, hence quantitative investment is applied to make decisions frequently. Considering the example of Medicine plate in Chinese stocks, fundamental indicators and technical indicators are combined, and then investment decisions are made and optimized stepwise based on rough set model, where generical gorithm is appli...

Offshore wind farms with high installed capacities and located further from the shore are starting to be built by northern European countries. Furthermore, it is expected that by 2020, several dozens of large offshore wind farms will be built in the Baltic, Irish and North seas. These wind farms will be constituted of a considerable number of turbines packed together. Due to shadowing effects b...

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...