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For USV (unmanned surface vessels) cruise trajectory problem, this paper makes the research for two different drive models under the wind and waves disturbances of trajectory tracking control. Firstly, the characteristics of the USV is analyzed, then establishes the full drive and underactuated drive motion models of USV under the wind and waves disturbances environment. Secondly, a series of constraints...
There are some different traits about the collaborative technological innovation between the core enterprise and general partner among the technological alliance. Based on the Ngo et al (2008), this paper analyzes the innovation cost, the competition level and the co-opetitive relationships from Stackelberg game theoretical approach, and comes to the following conclusions: when the core enterprise...
Instead of the traditional factorization of the scalar Green's function by using scalar addition theorem in the low-frequency fast multipole algorithm (LF-FMA), we adopt the vector addition theorem (VAT) for the factorization of the dyadic Green's function to realize memory savings for large scale problems. We validate this factorization and use it to develop a low-frequency vector fast multipole...
Multiple non-traditional resources based energy system is used against a range of energy risks and environmental issues. The present study aims to develop a sustainability indicator for evaluating the sustainability of hybrid renewable energy (HRE) system. The indicator will reflect the Triple Bottom Lines (TBL) based definition of sustainability, including the meanings of environmental, economic...
This paper proposes a new method for valuing a major public investment project. The method allows also the study and determination of the optimal time to begin the investment. Such a project needs long-term investment, requires tools of analysis able to collect and systematize the future uncertainty, which is present in the evolution of the problem variables. Valuation is difficult and must take into...
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