Cognitive radio (CR) network is an excellent solution to the spectrum scarcity problem. Cooperative spectrum sensing (CSS) has been widely used to precisely detect of primary user (PU) signals. The trustworthiness of the CSS is vulnerable to spectrum sensing data falsification (SSDF) attack. In an SSDF attack, some malicious users intentionally report wrong sensing results to cheat the fusion c...

There exists no methodical standard for conflict analysis in the selection of optimal rule refinements. Current rule base refinement systems select the best rule refinements out of a set of competing ones by using heuristics rather than exact optimization procedures. In order to come up with an Operations Research approach to the optimal refinement of rule bases, an analysis of rule refinement ...

In clinical trials comparing several treatments, it is often the case that the response variance varies from treatment to treatment. This paper discusses the optimal treatment allocation scheme in this situation. For the one-objective scenario, i.e:, pariwise comparison of all treatments, three allocation rules, namely, the optimal rule, the equal allocation rule and the naive rule, are given a...

In this paper, we obtain the optimal selection rule for ordering uncertain prospects for all individuals with decreasing absolute risk averse utility functions. The optimal selection rule minimizes the admissible set of alternatives by discarding, from among a given set of altematives. those that are inferior (for each utility function in the restricted class) to a member of the given set. We s...

The ultimate goal of monetary policy is to achieve price stability and high output. In this regard, central banks usually change the interest rate, liquidity, and money base in order to apply monetary policies. The John B. Taylor rule is one of the rules known in the transmission of monetary policy.[1] Based on this rule and given the output gap and inflation gap, the central bank increases or ...

Two prominent ideas in the study of decision-making have been that organisms behave near-optimally, and that they use simple heuristic rules. These principles might be operating in different types of tasks, but this possibility cannot be fully investigated without a direct, rigorous comparison within a single task. Such a comparison was lacking in most previous studies, because a) the optimal d...