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VIEWING URBAN DISRUPTIONS FROM A DECISION INFORMATICS PERSPECTIVE   总被引:2,自引:2,他引:2  
1. Introduction Urban infrastructures are the focus of terrorist acts because, quite simply, they produce the most visible impact, if not casualties. From the September 11, 2001 (i.e., “9/11”) attack on New York City’s World Trade Center to the more recent March 11, 2004, attack on Madrid’s commuter trains, it is obvious that urban centers are indeed vulnerable to such hideous acts. A systemic or holistic approach to securing the infrastructure systems that underpin an urban center isr…  相似文献   

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This paper describes the first phase, 'finding out', of a systemic participatory action research intervention in the management systems of a rural community development organization in the KwaZulu-Natal province of South Africa. The aims of the intervention were to (a) improve the management system of this organization, and (b) evaluate the usefulness of particular systems methodologies for the improvement of management systems of organizations involved in community development in under-resourced rural contexts. The second phase, "implementation," needs to be completed and thoroughly evaluated before any final conclusions can be drawn about the suitability of the chosen systems framework for Third World type rural contexts. However, the second phase is, at the time of writing, underway and all indications are that an interpretive ('Soft') Systems Methodology, combined with insights from a more functionalist ('hard') approach (with methods chosen through a Critical Systems Thinking framework) holds much promise for participatory systemic interventions in these contexts.  相似文献   

4.
Contemporary approaches to ethics are centred upon utilitarian and formal ethics. Yet, these are not capable of counteracting the moral crisis in our society. We must move beyond self-interest or merely doing what is specified in codes, to Samaritan ethics, which means attending to the needs of our neighbour even when he is unable to repay us. This ethic has systemic properties; therefore, it can be incorporated into an appropriate systems science framework that includes the humanities and the historical mode of reasoning. Furthermore, rather than social, economic and political manipulation, education—in the classical humanist tradition—should be the appropriate method to help implement such ethics into our societies.  相似文献   

5.
In recent decades, there has been increased awareness of the need for systemic change in education. In systemic change, it is of the greatest importance that stakeholders examine and clarify their individual values and articulate shared values and state them clearly. This is necessary because values underlie visions, guide choices, decisions, and actions made in the course of design and, eventually, serve as practical tools in evaluating a system and its programs. This study explores the importance of articulating values in the design of educational systems. Given the importance of the clarification of values consented to by stakeholders and the lack of previous in-depth studies, the paper concludes that it is urgent to develop systemic and comprehensive value categories to aid in articulating core values and to serve as guidelines for applying these values in educational systems design.  相似文献   

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Variety engineering was the term coined by Stafford Beer to describe the management of the system of constraints placed on an organisation. Successful variety engineering involves working with the demands of Ashby’s Law of Requisite Variety; matching regulatory variety with that of the situation being regulated. Money is an important mechanism for variety engineering: the allocation of financial resources helps amplify variety; its withdrawal attenuates. This paper argues that budgeting, the conventional approach to the management of financial resources, demonstrably does not have requisite variety. This fact could be manifest in a range of undesirable patterns of behaviour. The practice of budgeting has not, however, been seriously challenged by systems theorists nor alternative mechanisms proposed. This paper sets to remedy this by describing how the cybernetic regulation of the flow of financial resources can be incorporated into the framework provided by Beer’s Viable Systems Model.  相似文献   

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The paper presents the application of augmented reality for aiding product design and development of machinery systems.Augmented reality technology integrates an interactive computer-generated word with an interactive real word in such a way that they appear as one environment.AR technology can enhance a user's perception of the real world with information that is not actually part of the scene but is relevant to the user's present activity.Presented in the AR system is a mode for changing views of data-...  相似文献   

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The biocybernetic approach as a basis for planning our environment   总被引:1,自引:0,他引:1  
In this paper, Professor Vester introduces the readers ofSystems Practice to his biocybernetic approach to systems planning, an approach that he has shown to be fruitful both in concrete applications and in many best-selling didactic publications, including children's books and games. Based on this approach he proposes a “cybernetic senstivity model,” a conceptual framework for ecologically sound systems design based on a biocybernetic redefinition of conventional techniques of systems modeling and simulation. The author explains the basic structure of the model and presents eight pertinent biocybernetic principles of good-systems practice. (Editor).  相似文献   

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1. Introduction The services industry provides services notgoods (Hughes and Mitchell et al., 1993). Thisindustry is moving towards globalization(Kathawala and Abdou, 2003). In 1870 theservice sector employed slightly more than 20%of the U.S.…  相似文献   

11.
Safety of patients in anesthesia has always been one of the major concerns of the anesthetist. It is clear from studies of safety in general that many accidents and critical incidents occur as the result of latent systemic failures to which a great number of factors contribute (Reason, 1990). An ideal way to approach this problem would be within a systemic framework, such as teleonics, developed by Járos and his co-workers (Cloete, 1999; Járos and Cloete, 1987, 1993). In this framework the events and procedures in anesthesia are considered to be part of a very complex network of process systems (teleons). It is postulated that teleonic uncertainty (telentropy) in this complex network is a factor that might lead to accidents. In a previous paper presented to the World Congress at Toronto in 2000, the principles of teleonics were described in a mathematico symbolic way (Horváth et al., 2000). This paper contains selected examples of application of these principles to the identification of possible systemic causes of accidents in anesthesia.  相似文献   

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Concerns about our current public education systems have given rise to a variety of reform efforts. During the past several years, efforts have begun to emphasize the importance of systems thinking and a “systemic” approach for bringing about fundamental educational reform. In spite of the promise of system design as a model for systemic change, it has been largely ignored by its intended clients, the educational leadership. This paper explores some of the reasons for this and proposes a number of actions that need to be taken if system design is to become a viable approach.  相似文献   

13.
Community indicators have been a frequent focus of the scholarly literature. There has been little exploration, however, in relation to rural communities, especially in developing countries. This reflects the special challenges associated with the complexity of rural systems, and the difficulties involved in developing appropriate and systemic indicators for rural communities. Identifying indicators that help the community to monitor progress towards sustainable outcomes requires a framework that is both practical and holistic. This paper introduces a participatory systemic framework for identifying community indicators, which respects the principles of complexity and honours the sense of ownership present in the communities. This framework is an iterative, sharing, co-learning engagement process that extends from creating a shared vision and extracting its core messages, to identifying indicators of progress and determining what actions to try. Importantly, this framework enables us to rank the indicators identified by communities with reference to ‘leverage points’, the best places to intervene in the social-environmental system for transformational change. This framework provides a potential pathway for sustainable rural development and perhaps also for organisations and urban communities.  相似文献   

14.
The Journal Systemic Practice and Action Research (SPAR) aims to encourage into print authors and practitioners of systemic thinking and practice from all kinds of background. In this note we describe both the publishing world into which SPAR has emerged and the systemic and inclusive thinking behind the journal’s publishing policy. We set out our manifesto for a fair and open approach to academic publishing. “A rich and diverse set of potential bibliometric and scientometric predictors of research performance quality and importance are emerging today—from the classic metrics (publication counts, journal impact factors and individual article/author citation counts) to promising new online metrics such as download counts, hub/authority scores and growth/decay chronometrics. In and of themselves, however, metrics are circular: They need to be jointly tested and validated against what it is that they purport to measure and predict, with each metric weighted according to its contribution to their joint predictive power. The natural criterion against which to validate metrics is expert evaluation by peers; a unique opportunity to do this is offered by the 2008 UK Research Assessment Exercise, in which a full spectrum of metrics can be jointly tested, field by field, against peer rankings.” (Harnard 2008)  相似文献   

15.
This paper proposes a particle swarm optimization(PSO) based particle filter(PF) tracking framework,the embedded PSO makes particles move toward the high likelihood area to find the optimal position in the state transition stage,and simultaneously incorporates the newest observations into the proposal distribution in the update stage.In the proposed approach,likelihood measure functions involving multiple features are presented to enhance the performance of model fitting.Furthermore,the multi-feature weights are self-adaptively adjusted by a PSO algorithm throughout the tracking process.There are three main contributions.Firstly,the PSO algorithm is fused into the PF framework,which can efficiently alleviate the particles degeneracy phenomenon.Secondly,an effective convergence criterion for the PSO algorithm is explored,which can avoid particles getting stuck in local minima and maintain a greater particle diversity.Finally,a multi-feature weight self-adjusting strategy is proposed,which can significantly improve the tracking robustness and accuracy.Experiments performed on several challenging public video sequences demonstrate that the proposed tracking approach achieves a considerable performance.  相似文献   

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Recently,some new characteristics of complex networks attract the attentions of scientistsin different fields,and lead to many kinds of emerging research directions.So far,most of the researchwork has been limited in discovery of complex network characteristics by structure analysis in large-scalesoftware systems.This paper presents the theoretical basis,design method,algorithms and experiment results ofthe research.It firstly emphasizes the significance of design method of evolution growth for networktopology of Object Oriented(OO)software systems,and argues that.the selection and modulationof network models with various topology characteristics will bring un-ignorable effect on the processof design and implementation of OO software systems.Then we analyze the similar discipline of“negation of negation and compromise”between the evolution of network models with different topologycharacteristics and the development of software modelling methods.According to the analysis of thegrowth features of software patterns,we propose an object-oriented software network evolution growthmethod and its algorithms in succession.In addition,we also propose the parameter systems for OOsoftware system metrics based on complex network theory.Based on these parameter systems,it cananalyze the features of various nodes,links and local-world,modulate the network topology and guidethe software metrics.All these can be helpful to the detailed design,implementation and performanceanalysis.Finally.we focus on the application of the evolution algorithms and demonstrate it by a casestudy.Comparing the results from our early experiments with methodologies in empirical software engi-neering,we believe that the proposed software engineering design method is a computational softwareengineering approach based on complex network theory.We argue that this method should be greatlybeneficial for the design,implementation,modulation and metrics of functionality,structure and per-formance in large-scale OO software complex system.  相似文献   

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针对传统基于文本的系统工程方法中存在设计文档变更难度大、工程模型可读性差、模型复用性不强等问题,提出了基于美国国防部体系架构(department of defense architecture framework,DoDAF)的基于模型的系统工程(model-based systems engineering,MBS...  相似文献   

18.
We explore problems involving the measurement of the performance of a system. We outline two systemic approaches that have come from different epistemological positions: one from the interpretivist paradigm (soft systems methodology) and the other from the cybernetic paradigm (viable systems model). These two systemic methodologies that have tackled problems involving performance measurement are considered and discussed: (a) Checkland’s systems ideas of ‘managing and controlling’ a system throughout a set of three measures of performance: efficacy, efficiency and effectiveness; and (b) Beer’s concepts of Actuality, Capability, Potentiality of the firm and his claims that the performance of a system needs to be quantifiable and resumed on ‘pure’ numbers which should reflect the survivability of the firm. A parallel is drawn between the two approaches concluding that although the paradigms underpinning them are in some way different, the practicalities of these approaches to control, measure and improve the performance of a system are very similar. A case involving the measurement of a proposed research strategic plan for a Manchester Metropolitan University Business School’s department is used to illustrate the systemic approaches.  相似文献   

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社会主义新农村乡风文明建设是一项系统工程。探索与把握乡风文明之系统特征,对深化其理论认识,提高其实践成效,都具有重要的意义。乡风文明之系统特征主要为,内在结构的层次性、蕴含内容的开放性、体系核心的主体性、发展环境的适应性、系统整体的统一性。  相似文献   

20.

This paper explores the risk factors threatening Zimbabwean Information Technology (IT) projects and build a systemic model demonstrating how the identified risk factors are interconnected. Drawn on systemic thinking, a soft systems approach called Interactive Management (IM) was adopted to identify the risk factors. The Interactive Management session involved the relevant stakeholders to interactively produce the systemic model through four major phases: idea generation, idea clarification, idea structuring, and interpretation of the structured ideas. The output of the Interactive Management process is a digraph showing the causal relationships between the identified risks. Six risk drivers were identified through the Interactive Management process: limited computer literacy, poor communication, lack of executive support, complexity of design, bureaucracy, and employee turnover. The constructed model demonstrates how the identified risk factors are interconnected. It also shows that non-linear relationships exist between risk factors. The output from this exploration has the potential to be used as a starting point to mitigate the risks impacting on Zimbabwean IT projects. Different from the output of frequently used approaches, the risk drivers identified in the systemic model inform decision makers to exploit the effective strategies in preventing other risks from materializing.

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