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131.
经济学对企业边界决定的回答是不完全的。由于资本、环境等客观现象必须通过信息表达, 信息因而成为整合决定企业边界的各种因素的有效途径。因此, 在信息视角下, 企业就是一个信息获取、处理和使用的机制, 企业的边界是由企业的信息能力大小决定的。  相似文献   
132.
当代国际贸易与国际直接投资的交叉发展趋势   总被引:6,自引:0,他引:6  
传统上,人们将国际贸易与国际直接投资视作两种不同的经济现象,并分别加以研究。但是随着经济全球化的日益深入,二者之间的联系越来越密切,表现出相互促进和相互补充的交叉发展特征。从发展趋势来看,贸易与投资的联系将会得到进一步加强,并且作为经济全球化的两种重要表现而具有越来越强的不可分割性。国际贸易与国际直接投资理论的相互融合、相互间的影响及现实表现出这一特征和趋势。  相似文献   
133.
分析了应用型本科传统毕业设计模式的现状和存在的问题,指出选题质量是毕业设计(论文)质量的源头、应从源头上把住质量关,提出了"学科交叉、产学研结合"的毕业设计(论文)新模式,并进行了研究与实践,取得了初步成效,同时确定了下一步改革思路.  相似文献   
134.
The boundaries between communities of teaching and educational research are very persistent. Boundaries can be conceptualized as sociocultural differences, leading towards discontinuity in action or interaction. Boundary crossing refers to the efforts made to establish continuity. The purpose of this article is to provide a better understanding of how these boundaries can be crossed by teachers who are also PhD students in a national PhD program for educational research in the context of science education. Sixteen teacher researchers as well as their professors and school principals were interviewed. Additionally, two stories were studied of two teacher researchers who seemed successful in crossing boundaries between the two communities. Many differences were found between the two communities, not all of them being boundaries. Specific personal characteristics - such as communication skills and flexible switching – seemed to facilitate boundary crossing, just like particular contextual factors such as school teams with open learning climates and supportive supervisors. All 16 teacher researchers contributed to better science teaching in their own practices, while eight teacher researchers had been able to share insights from their PhD projects with others.  相似文献   
135.
利用锥上的不动点定理讨论时标上一类奇异动力方程边值问题的正解.  相似文献   
136.
用km,n表示完全二部图,用k4,m\e1,e2表示完全二部图k4,n去掉两条边e1、e2.本文确定了K4,n\e1,e2的交叉数为州z(4,n)-2[n/2]+2.K4,n\e1,e2.  相似文献   
137.
考虑如下边值问题-u″=λ^2u+αf(u)+g(|u'|) (1)u(0)=u(1)=0 (2)正解的存在性,其中λ>0,α≥0为参数;f∈C(R,R+),g∈C(R+,R+),满足g(s)>0,s>0;lims→0f(s)/s=0,lims→0g(s)/s=0,∫∞sds/α+g(s)=∞,α>0,∫ds/g(s)<∞.在上述条件下,我们证明了,对任一0<λ<π,α≥0,边值问题(1)-(2)至少存在一个正解,对λ≥ττ边值问题(1)-(2)没有正解.  相似文献   
138.
五笔字型输入法,是电脑用户最喜欢,输入速度最快的方法.本文所探讨的五笔字型快速输入法为王永民教授所创立,笔者只是根据实践中的体会,从学习和掌握这种方法的角度提出一个快速输入的学习思路.  相似文献   
139.
This paper points out that globalization has raised fundamental questions about knowing and learning and that it is essential for educators to engage in collective knowledge generation by crossing community boundaries. Drawing on the theoretical framework of Activity Theory, this paper reports on a study on the expansive learning that was afforded by a school–university partnership as university tutors, mentor teachers and student teachers engaged in a new activity system mediated by lesson study. The study showed that in the course of resolving contradictions that were inherent in the boundary zone, they negotiated the mediating tool and consequently, the activity system was transformed from helping student teachers learn to teach into learning for all participants. This paper concludes that it is essential for teachers and teacher educators to develop the capability to engage in expansive learning through tackling ill-defined problems in boundary zones.  相似文献   
140.
In response to the increased construction of digital scholarship infrastructure in academic libraries this article articulates a new staffing model for the management of digital platforms in the academic library environment. Based on two cases, this article discusses the increased use of digital infrastructure in pedagogy by Library Special Collections at UCLA, and the workflow pressures these infrastructures created that challenge traditional staff roles. Digital infrastructures are then framed as types of boundary object, catering to multiple communities of practice. In order to tend to these boundary infrastructures, a new staffing model has been introduced—that of the boundary staff—whose primary purpose would be to support these hybrid infrastructures and more effectively integrate them into the general library environment. This approach to digital project collaboration can set the stage for more flexible and innovative digital instruction, building on the current skillsets of library staff to facilitate new modes of faculty and librarian partnerships.  相似文献   
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