地方本科院校校园广播网络建设的探讨——以凯里学院为例

对传统校园广播网络的优缺点进行分析,比较当今各大厂家推出的各种校园广播网络方案,从地方本科院校的实际出发,提出地方本科院校校园广播网络的建设思路：采用数字音频广播网络技术的专业智能广播软件实现自动化播音和智能化管理,利用有线电视调频智能广播网络连接校区的各个功能区,在各功能区采用传统广播网络广播.     

A new solution to wireless sensor network density control problem

1 Introduction a At present, the research work on wireless sensor networks is based on the assumption that the energy of a sensor node is provided by the battery and can not be regenerated. The lifetime of the node is limited and ephemeral. Hence research…     

Relays and relations: tracking a policy initiative for improving teacher professionalism

This paper offers a new way of exploring some of the complexities inherent in attempts by policy makers and others to promote educational change. The focus of this study is on the current drive in education policy to alter the basis of teacher professionalism through the application of principles of lifelong learning to teachers’ professional development. Drawing upon data from two studies of the Chartered Teacher (CT) initiative in Scotland the paper examines the formation of successive transmission points as material relays of relations during the process of implementing this policy objective. It explores how three key discursive elements of a professional standard for accomplished teaching: collaborative action, critical reflection and enquiry, and teacher leadership, were progressively recontextualised during the introduction of CT status in schools. The findings indicate some of the conceptual and political struggles involved at the critical junctures where policy implementation requires the movement of a discourse from one social context to another. The paper suggests that a discursive analysis of how a centrally mandated initiative is transmitted can help to promote an understanding of the complexities of this process and increase critical awareness of the issues at stake for those involved.     

概率布尔网络的动态行为研究

概率布尔网络是布尔网络的拓展。布尔网络和概率布尔网络已经广泛应用于生物系统模拟中。运用马尔科夫链模拟概率布尔网络的动态行为及采用消除趋势波动分析（DFA）方法,分析概率布尔网络的长程相关性特性发现,概率布尔网络的动态行为具有长程相关性,大部分概率布尔网络能呈现1/f波动,且产生1/f波动的噪声值和范围比布尔网络的大。     

知识网络组织之间相互信任的影响因素及建立机制研究

采用前因变量和后果变量的模式,对知识网络中相互信任的影响因素进行了分类概括,以满足博弈论推断出的相互信任建立前提条件为出发点,从影响因素着手,推断出知识网络中组织之间相互信任的四类建立机制,并构建出对应的模型图,最后通过案例分析对文中观点加以检验.     

802.11s无线Mesh网络中协作多样性感知的路由度量和协作路由协议

提出了802.11s无线Mesh网络中协作多样性感知的路由度量,并提出了适应无线Mesh网络特点的协作式路由协议(CDARP)与协作媒体访问控制协议(CMAC).通过构建协作虚拟节点、计算协作链路度量,CDARP-CMAC能够选择最合理的路径进行协作数据传输.实验结果表明,与最优路径的协作机制相比,CDARP-CMAC协议提高了网络有效吞吐量5％～13％;同时降低了数据包丢包率5％～10％.     

Creating value in ecosystems: Crossing the chasm between knowledge and business ecosystems

Policy makers take initiatives to stimulate knowledge ecosystems in technology hotspots. It is implicitly assumed that these ecosystems will lead to value networks through which the participating companies can realize a competitive advantage. Value networks refer to business ecosystems where the value proposition is offered by a group of companies which are mutually complementary. The strategy literature suggests that business ecosystems lead to competitive advantages for each of the partners in the ecosystem. Based on a unique hand-collected database of 138 innovative start-ups in the region of Flanders, we analyze the knowledge and business ecosystem and the financial support network. We find that the knowledge ecosystem is well structured and concentrated around a number of central actors while the business ecosystem is almost non-existent at the local level. Further, we find that the financial support network is almost 100% publicly backed and fails to bridge the knowledge and business ecosystem. The implications for policy makers who tend to focus on the development of local ecosystems are discussed.     

基于核心能力的企业战略网络--网络经济时代的企业战略管理模式

本文认为战略网络是网络经济时代新的战略思想，它与传统的战略思想有本质的区别，我们必须将战略网络思想整合于战略管理之中。作者将企业能力理论与战略网络思想想结合定性推导出一个完整的企业战略管理模型，提出了网络经济时代的企业战略管理模式——基于核心能力的企业战略网络管理模式及其理论框架，以指导企业有效地实施网络战略管理。     

Multi-layer self-organizing polynomial neural networks and their development with the use of genetic algorithms

In this paper, we introduce a new architecture of genetic algorithms (GA)-based self-organizing polynomial neural networks (SOPNN) and discuss a comprehensive design methodology. Let us recall that the design of the “conventional” PNNs uses an extended group method of data handling (GMDH) and exploits polynomials (such as linear, quadratic, and modified quadratic functions) as well as considers a fixed number of input nodes (as being selected in advance by a network designer) at polynomial neurons (or nodes) located in each layer. The proposed GA-based SOPNN gives rise to a structurally optimized structure and comes with a substantial level of flexibility in comparison to the one we encounter in conventional PNNs. The design procedure applied in the construction of each layer of a PNN deals with its structural optimization involving the selection of preferred nodes (or PNs) with specific local characteristics (such as the number of input variables, the order of the polynomial, and a collection of the specific subset of input variables) and addresses specific aspects of parametric optimization. An aggregate performance index with a weighting factor is proposed in order to achieve a sound balance between approximation and generalization (predictive) abilities of the network. To evaluate the performance of the GA-based SOPNN, the model is experimented with using chaotic time series data. A comparative analysis reveals that the proposed GA-based SOPNN exhibits higher accuracy and superb predictive capability in comparison to some previous models available in the literature.     

基于情景化偏好的移动社交网络信息服务自适应建模研究

构建了移动社交网络基于情景化用户偏好的自适应适配信息服务系统模型,提出了移动社交网络的自适应服务发现方案。解决移动社交网络信息服务的发现与推送的延迟问题,实现高效的移动社交网络信息服务推送,对移动社交网络信息服务资源、知识资源进行科学管理。