Contemporary discourses in Information Systems Research: Methodological inclusiveness in a sample of Information Systems Journals

We propose a framework to reflect on the development of four information systems (IS) paradigms, arguing that this field has followed a similar path to that of Management Sciences (MS). The framework comprises four IS paradigms/discourses: (1) positivist/normative; (2) soft/interpretive; (3) critical/pluralistic; and (4) constructivist/2nd order cybernetics. The paper characterizes these approaches to IS by using four key terms: System; Organisation; Management and Information, exploring the way these concepts are perceived through the lens of the four paradigms. The paper reports on the nature of current IS trends, from an initial survey of six top IS journals identifying articles adhering to the interpretive, critical and constructivist paradigms published between 1999 and 2009. Results indicate that IS is moving towards research practice in which interpretive, critical and constructivist discourses are utilised. Implications of the proposed framework and publication trends, together with some points for further research, are offered.     

基于多核系统的视频特征提取程序并行化及性能优化方法

基于多核系统,对4种视频特征的提取程序分别研究了并行算法和性能优化方法.实验结果表明,通过的并行化和性能优化,当使用8个核时,这4种视频特征提取程序的处理速度平均提高到原始串行程序的17倍.此外,对实验结果进行了深入的性能分析,寻找和剖析了多核系统的性能瓶颈,为进一步提高多核系统的性能提供了依据和建议.     

Industry Norms as Predictors of IT Outsourcing Behaviors

How do firm-specific factors impact strategic IT decisions such as IT outsourcing? Do non-financial factors influence these decisions? Whereas prior IT outsourcing research has focused primarily on normative, economic drivers of IT outsourcing, we find evidence of firm-specific non-financial factors influencing IT outsourcing decisions. We focus on the social influence perspective and use IT outsourcing decisions as exemplars of strategic IT decisions. Using a data sample of 77 outsourcing contracts from the automotive industry from 1995 to 2010, we find that even after controlling for financial factors, industry average levels of outsourcing can be used to distinguish strategic outsourcing behaviors of firms for IT enabled services. Firms with above-average levels of IT outsourcing tended to further increase outsourcing, a behavior consistent with perceived Red Queen competitive pressures. Firms with below-average levels of IT outsourcing showed no measurable trends of either increasing or decreasing outsourcing levels. This suggests that firm-specific factors influence IT outsourcing decisions and deviations from non-financial industry norms can indicate how firms make strategic IT decisions.     

宁波市综合中学“四通”体系的构建

宁波综合中学要依托＂繁荣商埠,东海明珠＂的美誉,要以近两年宁波＂普职融通班＂为主要基础,在育人、教材、课程和毕业方面创设特色,才可能进入浙江省高中教育的前列。     

具有有向切换拓扑结构的二阶多智能体系统的领导随从一致

该文旨在研究具有非线性动力学特征和时变耦合时滞的二阶多智能体系统的领导随从一致性问题,所研究的系统具有切换的拓扑结构.基于Lyapunov泛函理论和线性矩阵不等式的方法,本文给出了一类领导随从一致的充分性条件,并通过具体实例验证所给判据的有效性.     

兰开斯特与图书情报学

图书情报学家兰开斯特教授在其数十载学术生涯中硕果累累。文章通过梳理兰开斯特教授多本经典著作,结合后人对其著作的文献计量分析和h指数分析,探讨其学术思想,以促进深化国内图书情报学的理论和实践研究。     

Information retrieval in the workplace: A comparison of professional search practices

Legal researchers, recruitment professionals, healthcare information professionals, and patent analysts all undertake work tasks where search forms a core part of their duties. In these instances, the search task is often complex and time-consuming and requires specialist expertise to identify relevant documents and insights within large domain-specific repositories and collections. Several studies have been made investigating the search practices of professionals such as these, but few have attempted to directly compare their professional practices and so it remains unclear to what extent insights and approaches from one domain can be applied to another. In this paper we describe the results of a survey of a purposive sample of 108 legal researchers, 64 recruitment professionals and 107 healthcare information professionals. Their responses are compared with results from a previous survey of 81 patent analysts. The survey investigated their search practices and preferences, the types of functionality they value, and their requirements for future information retrieval systems. The results reveal that these professions share many fundamental needs and face similar challenges. In particular a continuing preference to formulate queries as Boolean expressions, the need to manage, organise and re-use search strategies and results and an ambivalence toward the use of relevance ranking. The results stress the importance of recall and coverage for the healthcare and patent professionals, while precision and recency were more important to the legal and recruitment professionals. The results also highlight the need to ensure that search systems give confidence to the professional searcher and so trust, explainability and accountability remains a significant challenge when developing such systems. The findings suggest that translational research between the different areas could benefit professionals across domains.     

苏区社会变迁中的非正式制度分析——基于对宗族改造的反思

当乡村作为革命的嚆矢时,宗族被视为革命的羁绊而成为打击对象。在其后苏区的社会整合中,中共力图通过基层政权建设使宗族走向国家。然而考察苏区整个历史变迁过程,农民的宗族意识并没有完全消除,宗族势力还时隐时现,且在苏区沦陷后很快又得以恢复。通过对宗族改造的考察,我们发现,在社会变迁过程中,产生于自然经济基础之上的文化传统、意识形态等非正式制度具有巨大的弹性,要消弭其对社会发展的消极影响,需要一个长期的、连续的冲击。     

邓小平法制思想初探

邓小平的法制思想丰富精深,其中最基本的内容是：加快立法工作,逐步完善各项法律制度的思想;严格执法,保证宪法和各项法律的贯彻落实的思想;建设一支“执法公正、品德合格”的高素质的政法队伍的思想;一个国家,两种制度并存的法律思想;通过法制教育,提高全体公民的法律意识的思想。     

Computation of the Simplest Normal Forms for Resonant Double Hopf Bifurcations System Based on Lie Transform

The simplest normal form of resonant double Hopf bifurcation was studied based on Lie operator. The coefficients of the simplest normal forms of resonant double Hopf bifurcation and the nonlinear transformations in terms of the original system coefficients were given explicitly. The nonlinear transformations were used for reducing the lower- and higher-order normal forms, and the rank of system matrix was used to determine the coefficient of normal form which could be reduced. These make the gained normal form simpler than the traditional one. A general program was compiled with Mathematica. This program can compute the simplest normal form of resonant double Hopf bifurcation and the non-resonant form up to the 7th order.