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A universal solution to -to- mode converters in highly oversized circumferentially corrugated circular waveguides is proposed based on the nonuniform rational B-spline technique. A 35-GHz -to- mode converter of radius 16 mm is designed by the method and predicted to have a conversion bandwidth of 7.9% when the mode conversion efficiency...
A military decision maker is typically confronted by the task of determining optimal course of action under some constraints in a complex uncertain situation. Thus, a new class of Combinational Constraint Optimization Problem (CCOP) is formalized. The object of CCOP is modeled by Influence net, and the constraints of CCOP relate to resource and collaboration. CCOP comprising Pseudo-Boolean and Boolean...
Risk control is of great importance for software project management. However, the software risk control currently depends on the manager's subjective judgments, and lacks quantitative supporting tools. In this paper a software risk control optimization model is presented. By forming project strategy and increasing activities' costs, the objective of maximizing the expected value of project's capital...
Information systems outsourcing has been one of the critical issues in information systems management. Various strategies to IS outsourcing have emerged. Although many articles have appeared on outsourcing, few have extended the discussion beyond simple cost and benefit analysis. Vendor selection is a difficult problem which includes both tangible and intangible factors. Until now, there are no effective...
The parallel AN/AO process, first proposed by the authors to efficiently use denitrifying phosphorus removing bacteria, was briefly introduced in the paper. Key operational parameters i.e. influent feed ratio of AN unit vs. AO unit, internal mixed liquid suspended solids (MLSS) return ratio (IMRR), external sludge return ratio (ESRR), sludge retention time (SRT) and hydraulic retention time (HRT)...
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