课堂师生互动 提高课堂效率

在当今这个知识腾飞的年代,掌握知识的多少已经不是教学的最终目标,如何学会知识这才是最重要的。新课改理念下的师生互动就是克服传统课堂中的单一枯燥的教学行为,打破课堂的沉闷,让学生在一种愉悦亢奋的状态中主动学习、积极思考。基础教育的任务不仅仅是传授知识,更重要的是让学生学会学习,培养可持续的学习动机和终身学习的愿望和能力。本文通过对师生互动的前提、师生互动的保证、师生互动的基础、师生互动的内在动力、师生互动的修养、师生互动的提问等几个方面来阐述如何落实师生互动,提高课堂效率,使师生互动的价值在数学课中真正显现出来。     

我国生产性服务业与制造业互动需求结构及发展态势

本研究采用投入产出法与比较分析方法,对典型国家(或地区)的生产性服务业与制造业的互动需求结构进行分析。研究发现,经济发展水平、服务业发展水平、生产性服务业性质、制造业性质四方面是影响生产性服务业与制造业需求结构的重要因素。本文从四要素发展特点总结了生产性服务业与制造业需求的国际发展态势,即随着经济发展水平与服务业发展水平的提高,生产性服务业由对制造业需求显著转为对自身需求显著,而生产性服务业内部由以非知识密集型服务业为主导逐步转向以知识密集型服务业为主导。结合我国现状,本文最后提出了推动我国两类产业互动发展的若干政策建议。     

基于“服务交互”视角“中国服务”的餐饮特色培育研究

培育中国特色的餐饮服务对于本土餐饮品牌的经营与发展意义重大。本文在"中国服务"的内涵基础上,阐明"中国服务"的餐饮特色的内涵与特征;明确使"中国服务"成为走向世界的、独具中国特色的服务品牌,是培育"中国服务"的餐饮特色的核心目标,也是餐饮业发展的长远之计;基于"服务交互"的视角,为培育"中国服务"的餐饮特色,打造中国特色餐饮品牌的管理实践提供方法指导。旨在为餐饮业服务品质的提升,尤其是为本土中高端餐饮品牌的健康发展提供有益的参考。     

要素价格扭曲与经济失衡之间的互动关系研究

劳动力、资本、能源三种生产要素价格扭曲与宏观经济失衡之间存在互动关系。通过建立超越对数生产函数,估算改革开放以来中国劳动力、资本、能源三种生产要素价格的绝对和相对扭曲程度,继而建立VAR模型,考察各内生变量之间的脉冲响应关系。研究表明,要素价格扭曲和宏观经济失衡之间存在相互强化的互动关系。应从调整供给结构、增加政府民生支出、改革要素价格形成机制、提高生产效率等多方面着手,实现宏观经济再平衡。     

Managing interaction for learning and value creation in exchange relationships

Firms create value by establishing and maintaining appropriate exchange relationships. However, beyond the generally recognized importance of trust and commitment, there is a lack of specific cues as to how such value creation can be managed. In an attempt to gain more insight this study examines the success formulas in three different types of interactions in exchange relationships. The purpose is to investigate how different types of interactions can be managed so that buyer firms make important contributions to the development of their suppliers' capabilities. The study empirically examines how inter-organizational management facilitates value creation in three different types of interactions in exchange relationships: unilateral learning, unilateral development, and bilateral learning. This study uses a partial least squares analysis (PLS) to analyze survey data from 142 exchange relationships in the seafood industry. The main contribution to the literature is the assessment of how various types of inter-organizational management promote value-creation initiatives (such as information supply and coaching), and ultimately, value creation.     

Information interaction capabilities: conceptualisation and instrument development

The twenty-first century has seen the rise of a new wave of technological change and industrial revolution. The next-generation Information Technology (IT) is radically shifting the core competence of corporation, meaning of value creation, and sources of a competitive advantage. In this situation, it is imperative for firms to build a new core competence. Based on the resource-based theory, this paper describes the competence of firms in the information interaction area, frames the concept and classification systems of information interaction capabilities (IICs), develops the scale of IICs, and tests the relationship between IICs and competitive advantages using empirical data in China. In short, the paper identifies that IICs are an important competence in the environment of the next-generation IT. Conceptualising IICs provides a foundation for bridging information interaction and strategy research. IICs provide a holistic approach to building the new core competence and achieving competitive advantages.     

基于知识权力和知识交互行为的产业集群多重知识网络演化分析

针对产业集群知识网络中客观存在但却未受关注的知识权力,结合自适应知识交互行为,采用多主体建模与仿真方法,分析知识权力的动态变化导致的产业集群多重知识网络演化。结果表明:知识权力差距及知识交互行为是促使产业集群多重知识网络形成及演化的基础,产业集群多重知识网络的演化过程具有典型的阶段性特征,其网络结构呈现出网络节点密集性与稀疏性相结合、强联结与弱联结并存、度分布高度异质性的特征。利用实际产业集群网络验证仿真结果,证明了该仿真模型的可信性。     

一种基于纠缠交换的远程量子链路建立策略

提出一种以纠缠交换作为核心技术的远程量子链路建立策略,建立了基于链路状态矩阵的量子链路模型并分析了纠缠交换的实现和矩阵表示。提出了链路协议栈以及端到端的建立策略,分析了矩阵控制下的纠缠交换和纠缠纯化流程,计算得出了在基于自动重传请求(ARQ)协议经典信息辅助下的链路时延和吞吐量与节点数、误帧率、平均距离、操作成功率之间的定量关系。仿真结果表明：处于同一状态区间内的链路性能随节点数呈现出较为一致和平缓的变化;不同区间内的链路性能差异较为显著,在节点平均距离为1 km、经典信息误帧率为0、纠缠保真度为0.98的情况下,当节点数分别为32、33和34时,链路时延分别为1.0770 ms、1.0903 ms和1.6690 ms,链路吞吐量分别为0.9285 kb/s、0.9172 kb/s和0.5992 kb/s。     

Evaluating the potential of agent-based modelling to capture consumer grocery retail store choice behaviours

Evolving consumer behaviours with regards to store and channel choice, shopping frequency, shopping mission and spending heighten the need for robust spatial modelling tools for use within retail analytics. In this paper, we report on collaboration with a major UK grocery retailer to assess the feasibility of modelling consumer store choice behaviours at the level of the individual consumer. We benefit from very rare access to our collaborating retailers’ customer data which we use to develop a proof-of-concept agent-based model (ABM). Utilising our collaborating retailers’ loyalty card database, we extract key consumer behaviours in relation to shopping frequency, mission, store choice and spending. We build these observed behaviours into our ABM, based on a simplified urban environment, calibrated and validated against observed consumer data. Our ABM is able to capture key spatiotemporal drivers of consumer store choice behaviour at the individual level. Our findings could afford new opportunities for spatial modelling within the retail sector, enabling the complexity of consumer behaviours to be captured and simulated within a novel modelling framework. We reflect on further model development required for use in a commercial context for location-based decision-making.     

感知/传输帧结构下基于有效容量的多功率分配策略

传统认知无线网络功率分配时,一般假定主用户（Primary User,PU)状态在一帧内不发生变化,并且未考虑传输时延的问题。在下一代移动网络中,由于主用户活跃程度的提高以及严格的时延要求,上述问题是功率资源分配时亟需考虑的重要方面。针对这种问题,以最大化认知用户可获得的有效容量为目标,采用基于感知/传输帧结构的四状态三功率传输策略,从而满足时延约束要求,且考虑了主用户的活跃程度。建立了系统以及状态转移模型,设计了使用服务质量(Quality of Service,QoS)约束的平均信道有效容量优化函数,采用Lagrangian方法详细分析推导了最佳有效容量的理论近似值,并对影响有效容量的不同因素进行了仿真分析。与传统的传输策略相比,在保证主用户正常通信的前提下,采用所提算法,认知用户的有效容量得到了显著提高。