从多视角认识数学学习的本质特征

基于对学习本质现代意义的理解和数学学习基本特点的把握,数学学习的本质特征可以从以下视角认识:数学学习是数学模型建构的过程;数学学习是不断提出问题与解决问题的过程;数学学习是发展数学能力的过程;数学学习是再创造的过程.     

企业持续竞争优势来源:人力资源还是人力资源管理

不少学者从人力资源的特性出发指出人力资源是企业持续竞争优势的来源。本文认为,这种观点混淆了人力资源和人力资源管理活动,或者把表象的特征归结为根源。人力资源仅仅代表了企业竞争优势的可能性,而人力资源管理活动使这种可能性转化为现实,是企业持续竞争优势的来源。明确持续竞争优势来源于人力资源管理而不是人力资源,对企业管理具有非常重要的意义,即高素质的人力资源永远代替不了有效的人力资源管理,做好人力资源管理工作才是更重要的。     

论教师的教育法意识

教师的教育法意识是教师主体和客体的统一，是教师法律、法规实践与个体心理相互作用的产物。培养和强化教师的教育法意识，并形成相应的素质，对真正实现依法治教的目标有着重要作用。因此，必须建立完备的教育法制；加强教师管理，规范教育教学活动。     

企业战略业绩评价模型应用与实证研究--一种针对行业背景的内部业绩评价模式

利用因子分析法所建立的战略业绩评价模型，可以评价各企业在行业中的竞争优势和劣势以及相对竞争地位，实证研究的结论证明这种评价模型是有效的。但评价主体对样本企业和评价数据的选择影响评价结果的可靠性。     

单向可替代报童问题的最优在线订货策略

针对需求信息未知的情形,建立了单周期具有单向可替代性的两产品在线订货报童模型,设计了有效的在线订货策略并进行竞争分析,给出了该问题的最优竞争比以及对应的最优订货量。最后通过对相关算例的分析,表明本文所设计的在线策略具有合理性和有效性。     

企业生态系统竞争共生战略模型

运用企业生态系统和生态位理论,建立企业生态系统竞争共生战略模型,分析企业从竞争到合作、到竞争共生的平衡条件,为我国企业获取竞争优势提供了新的可操作性思路。     

Protein adsorption on the poly（L-lactic acid） surface modified by chitosan and its derivatives

Surface modification of biomaterials has been adopted over the years to improve their biocompatibility. In this study, aiming to promote hydrophilicity and to introduce natural recognition sites onto poly（L-lactic acid） （PLLA） films, chitosan and its derivatives, carboxymethyl chitosan（CMC） and N-methylene phosphonic chitosan （NPC）, were used to modify the surface of PLLA films by an entrapment method. Radiolabeled （^125I） proteins were used to measure the amount of protein adsorbed to PLLA surfaces. Fibronectin （Fn） was used to study the protein adsorption on the modified PLLA surfaces, including isotherm adsorption and adsorption kinetics of single protein, competitive adsorption of binary proteins system and serum multi-proteins and the desorption behavior in serum solution. The results showed that in the isotherm adsorption, Fn had a larger adsorption capacity on the CS-modified surface at lower concentrations, but had a high adsorption capacity at CMC-modified surface at higher concentrations. In the study of absorption kinetics, Fn had a fastest adsorption equilibrium and a highest equilibrium adsorption capacity at the CS-modified surface, while it was opposite at the PCS-modified surface. When BSA and serum were added, it had the greatest effect on the adsorption of Fn on the PCS-modified surface. After 6 hours soaking in the desorpUon study, Fn had reached desorption equilibrium on all the modified surfaces, which had different effects on the desorption rate and the remaining percentage of Fn.     

格式塔与意识领域——论古尔维奇对胡塞尔先验现象学的批判与重构

古尔维奇(1901-1973)是20世纪20年代至70年代现象学运动中最重要的哲学家之一。其所创立的格式塔现象学具有非常重要的理论价值,它最终启发梅洛.庞蒂创建了身体现象学。为了解决意识的同一性问题,古尔维奇创造性地运用格式塔感知理论对胡塞尔现象学进行了批判性改造,这主要体现在他对胡塞尔感知现象学和意向相关项理论的批评和重构中。由于对格式塔结构的倚重,古尔维奇最终创建了一个没有先验自我概念的现象学,即格式塔现象学。     

Analyses of location-price game on networks with stochastic customer behavior and its heuristic algorithm

<正> In this paper,a two-stage model is developed to investigate the location strategy andthe commodity pricing strategy for a retail firm that wants to enter a spatial market with multiplecompetitive facilities,where a competitor firm is already operating as a monopoly with several outlets.Expected market shares are calculated based on the stochastic customer behavior on networks.Theauthors provide a sufficient condition for the existence of equilibrium prices in the price game for thefirst time.The existence and uniqueness of the pure strategy Nash equilibrium price with a specifiedutility function are proved in the subgame.A metaheuristic based on tabu search is proposed tosearch the optimal location-price solution of the model.In addition,the authors provide two numericalexamples to illustrate how to obtain the optimal solution and conduct sensitivity analysis.The analysisshows that the best location decision is robust for the follower firm,price game is more intense whenincomes of consumers are lower or there are more substitution products,and neither chain retail gainsfrom the price competition.     

CDIO理论在《电工学》实验教学改革中的应用

＂电工学＂实验是＂电工学＂课程教学的重要实践环节,本文基于CDIO工程理论对该实验课程进行了教学改革。文章从完善实验教材、改革教学方法、引入辅助手段、建立开放实验室和增加科研训练等内容,详细介绍CDIO工程理论在实验课程改革中的运用,实践中取得了较好的教学效果,极大地提高了学生的学习积极性及创新实践能力。