Search

Abstract This paper studies the imaging scheduling issue for China's L-band differential interferometric synthetic aperture radar (InSAR) satellite formation which can work in different observation modes to satisfy different imaging requests. Previous imaging scheduling mainly focuses on maximizing the total revenue of selected targets but ignores that different types of targets actually have different demands. Therefore, a constraint satisfaction model which classifies targets into three types according to targets' size and number of observations is established, meanwhile, three objective functions are considered to satisfy demands of different types of targets. Furthermore, an imaging scheduling method based on improved non-dominated sorting genetic algorithm III (NSGA-III) is proposed to obtain a set of well-converged and well-diversified non-dominating solutions. New Niche-Preservation operation with the same penalty value for convergence and diversity performance is adopted in NSGA-III. Numerical comparison simulations on walking fish group (WFG) test suits and three imaging scheduling instances of different size show the superiority of the proposed methodology. [ABSTRACT FROM AUTHOR]

Abstract: This paper proposes two quadratic-constrained DEA models for evaluation of mutual funds performance, from a perspective of evaluation based on endogenous benchmarks. In comparison to previous studies, this paper decomposes two vital factors for mutual funds performance, i.e. risk and return, in order to define mutual funds’ endogenous benchmarks and give insights and suggestions for managements. Of the two quadratic-constrained DEA models, one is a partly controllable quadratic-constrained programming. The approach is illustrated by a sample of twenty-five actual mutual funds operating in the Chinese market. It identifies the root reasons of inefficiency and ways for improving performance. The results show that although the market environment in year 2006 was much better than that in 2005, average efficiency score declines in year 2006 due to relaxing of system risk control. The majority of mutual funds do not show persistence in efficiency ranking. The most important conclusion is that the ranking of mutual funds in China depends mostly on system risk control. [ABSTRACT FROM AUTHOR]

Abstract: This paper presents an analytical framework to estimate the Total Allowable Area for Coastal Reclamation (TAACR) to provide scientific support for the implementation of a coastal reclamation restriction mechanism. The logic of the framework is to maximize the net benefits of coastal reclamation subject to a set of constraints. Various benefits and costs, including the ecological and environmental costs of coastal reclamation, are systematically quantified in the framework. Model simulations are developed using data from Tongan Bay of Xiamen. The results suggest that the TAACR in Tongan Bay is 5.67 km2, and the area of the Bay should be maintained at least at 87.52 km2. [Copyright &y& Elsevier]

Abstract: Delivering low-carbon communities requires an understanding of community practices and technologies, strategies and constraints associated with and accessed by communities. However, little research to date has investigated the application of green technologies as well as green strategies in achieving low-carbon communities. This paper first reviewed low-carbon technologies and strategies in the previous literatures and then examines how these technologies and strategies are addressed in two ongoing low-carbon communities. By comparing the differences of adopting various low-carbon technologies and strategies in the two cases, it is found that green strategies are not as valued as green technologies in the current stage of low-carbon communities in China. The ten One Planet Living principles are not fully considered and comprehensively implemented, and there is also lack of a clear and harmonious inter-sector working mechanism within and between energy, transport, waste management and water management sectors. Recommendations are proposed to provide a vehicle for a more effective and efficient use of green technologies as well as green strategies to reduce carbon emissions in low-carbon communities. Research findings in the study may therefore provide valuable references to guide low-carbon community development. [Copyright &y& Elsevier]

Abstract: In China and the rest of the world, family businesses as a unique mode of operation in the economic development of countries has played an important role. This paper studies on the basis of family business research in our country, then bases on the principal - agent relationship, a mathematical model by maximizing the return on the family business is analyzed. Analysts believe that the family business owners and professional managers are to meet the risk-neutral when there is an optimal operation of professional managers, family businesses can maximize returns; and two constraints are given because of the existence of incentive mechanism. [Copyright &y& Elsevier]