大学竞争战略:核心能力与组织创新

核心能力(Core Competence)是大学竞争优势的根源,以核心能力为基础的竞争是当今大学竞争的新范式。大学是资源与能力的集合体,大学核心能力来源于资源与能力的有机复合。核心能力培育与发展过程是大学将静态的资源存量变为动态的资本增殖的过程,组织创新(Organizational Innovation)则是组织资本投资。大学组织创新就是为了促进核心能力和学术生产力的提高,通过改变组织的战略、结构和文化来实现组织资源的潜在价值的过程。     

论中国共产党长期执政的道德合理性

巩固中国共产党长期执政的道德基础,解决人心向背问题是关键。新时期中国共产党加强执政能力建设,巩固、扩大党的执政基础,必须从多方面奠定党长期执政的道德合理性基础,必须始终坚持走群众路线。只有全面贯彻马克思列宁主义、毛泽东思想、邓小平理论、“三个代表”重要思想和党的十六届四中、五中全会精神,真正做到“立党为公、执政为民”,不断增强党执政的道德合理性,才能切实提高党的执政能力。     

健美操运动在高职校园文化建设中的作用

健美操运动作为高职体育教学中不可或缺的一部分,把健身、音乐、表演、娱乐,以及社交融于一体,将以自己独特的艺术魅力为高职校园文化建设做出巨大的贡献。     

One-dimensional coupled model for landfill gas and water transport in layered unsaturated soil cover systems

Cover systems are used to prevent water infiltration into a waste body. They also play an important role in controlling landfill gas transport from the waste body to the atmosphere. It is important to assess the flux of landfill gas at the surface of a cover system by considering the coupled effects of rainwater infiltration and gas transport in the cover soils. We have developed a 1D mathematical model for coupled transient gas and water transport in unsaturated cover soils. The coupled model was solved by the finite element method. Results obtained by the proposed model agreed well with experimental data. Based on the proposed solution, the influences of gas pressure, gas permeability, and the thickness of the cover soils on soil gas concentration profiles were investigated. The difference in soil gas concentration reached up to 31% as the thickness of cover increased from 1 to 2 m. Gas concentration at a depth of 0.2 m decreased by 6% as the amplitude of atmospheric gas pressure fluctuation increased from 20 to 100 Pa. The gas concentration increased by only 3% when gas permeability increased by a factor of 2 for a relatively long period of gas migration (e.g., 60 h) under the given conditions. Results suggest that both diffusion and advection should be considered when estimating gas transport in unsaturated cover soils. The numerical model can be used in the design of cover systems in relation to gas breakthrough time, breakthrough concentration, and flux.     

Data-driven optimal switching of switched systems

Switched systems are complicated due to the switching among the subsystems. When the subsystem models are unknown, control problems on switched systems turn to be more intractable. In this paper, the optimal switching problems are investigated for continuous-time switched autonomous systems with unknown dynamics and a finite-horizon cost function. Firstly, a novel data-driven optimal scheduling approach is proposed based on the estimated insertion gradients. Secondly, aiming at switched systems with a prescribed switching sequence, a data-driven optimal switching time approach is proposed based on the estimated derivatives of the cost with respect to the switching times. The two approaches take advantages of plenty state data containing necessary information instead of the system models. Furthermore, the errors of the approaches are analysed and bounded. Finally, simulation results of two examples are given to show the validity of the two approaches.     

“黑箱理论”视阈下阳光体育开展审视与立体式阳光体育长效发展模式构建

采用文献资料、访谈调查等研究方法,借鉴"黑箱理论",从阳光体育开展的"输出端"和"输入端"两个视角进行分析研究五年来阳光体育的实施效果和影响因素。基于调查存在的问题,提出建构包括学校、家庭和社会在内的全方位、多层次、宽领域的立体式阳光体育长效发展模式,为下一阶段阳光体育运动的开展提供理论参考。