检索结果-内蒙古大学图书馆

Proceedings of the XIVth Triennial Congress of the International Ergonomics Association and 44th Annual Meeting of the Human Factors and Ergonomics Association, 'Ergonomics for the New Millennnium'

作者： Burns, Catherine M. Cognitive Engineering Laboratory Department of Mechanical Engineering University of Toronto Toronto Canada Advanced Interface Design Laboratory Dept. of Systems Design Engineering University of Waterloo Waterloo Ont. N2L 3G1 Canada

The abstraction hierarchy (Rasmussen, 1985) is a modelling framework proposed for the design of displays to aid problem-solving. The model links information along two dimensions - means-end links of abstraction, and part-whole links of decomposition. While these links connect the model, little research has directly explored the perceptual support of these links. Based on one abstraction hierarchy for a simulated power plant, we designed three graphical displays that provided differential perceptual support for means-end links. The displays provided space-time, only spatial, or only temporal integration of means-end links. Subjects performed a link-spanning information search task using one of the displays. Significant differences were found in search accuracy and in the types of errors that occurred when using the three displays. This research sheds light on the integration of means-end information in ecological displays and demonstrates a novel information search task for evaluating large ecological displays.

关键词： Abstracting

来源：评论

学校读者我要写书评

暂无评论

A Work Domain Analysis for Network Management

引用

Proceedings of the Human Factors and Ergonomics Society Annual Meeting 2000年第4期44卷 469 - 472页

作者： Catherine M. Burns Ed Barsalou Cynthia Handler Johnson Kuo Kevin Harrigan Advanced Interface Design Lab Department of Systems Design Engineering University of Waterloo Department of Computer Science University of Waterloo

Computer networks are pervasive and critical to the operation of today's businesses. While most of us take computer networks for granted, network managers who must configure, operate, and fix faults in computer networks face a daunting task that becomes more complex everyday. Ecological interface design has been shown to be a promising approach for complex systems such as power plants or petrochemical systems. Computer networks are a very different work domain characterized by rapid technological change, extreme decentralization, and the existence of “soft” components. This paper presents the first work domain analysis of this new domain creating an abstraction hierarchy for general signal transfer systems and general computing networks. It shows how the abstraction hierarchy can be applied to this new domain and presents the initial work on an ecological interface design for network management.

关键词：

来源：评论

学校读者我要写书评

暂无评论

A work domain analysis for virtual private networks

A work domain analysis for virtual private networks

引用

IEEE International Conference on systems, Man and Cybernetics

作者： J. Kuo C.M. Burns Advanced Interface Design Lab Department of Systems Design Engineering University of Waterloo Canada

For businesses, virtual private networking has become a new method of building corporate communication networks. In addition to providing improved flexibility, security and global reach, virtual private networks (VPNs) can offer substantial cost-savings by reducing the dependence on expensive, private leased-line networks and troublesome remote-access solutions. Unfortunately, the deployment and management of such systems may come at a high cost. Depending on the nature of the business relationship between the enterprise and the Internet Service Provider (ISP), the network manager may have to deal with the increasingly daunting task of configuring, operating, and fixing security leaks and other faults in the system as the communication needs of the organization expand and change. However, a new design technique known as ecological interface design (EID) has been shown to be a promising approach for supporting operator tasks in complex work domains, such as nuclear power plants or petrochemical systems. A distinguishing feature of this approach is that display interfaces are designed by first conducting a work domain analysis (WDA), which focuses on identifying the important goals and environmental constraints that govern system behavior. By visually portraying the relationships between system goals, constraints, and the state of physical components in a structured manner, the problem-solving activities of operators can be effectively supported during abnormal or unanticipated situations. Due to the problem-solving nature of VPN management, interfaces for network management tools can be made more effective through the application of EID principles.

关键词： Virtual private networks Business communication Communication system security Problem-solving Communication networks Costs Web and internet services Power system security Power generation Petrochemicals

来源：评论

学校读者我要写书评

暂无评论

Errors in Searching for Abstraction Hierarchy Information

引用

Proceedings of the Human Factors and Ergonomics Society Annual Meeting 2000年第1期44卷 270 - 273页

作者： Catherine M. Burns Cognitive Engineering Laboratory Department of Mechanical and Industrial Engineering University of Toronto Toronto CanadaNow at the Advanced Interface Design Laboratory Department of Systems Design Engineering University of Waterloo Waterloo Ontario Canada N2L 3G1

The abstraction hierarchy (Rasmussen, 1985) is a modelling framework proposed for the design of displays to aid problem-solving. The model links information along two dimensions — means-end links of abstraction, and part-whole links of decomposition. While these links connect the model, little research has directly explored the perceptual support of these links. Based on one abstraction hierarchy for a simulated power plant, we designed three graphical displays that provided differential perceptual support for means-end links. The displays provided space-time, only spatial, or only temporal integration of means-end links. Subjects performed a link-spanning information search task using one of the displays. Significant differences were found in search accuracy and in the types of errors that occurred when using the three displays. This research sheds light on the integration of means-end information in ecological displays and demonstrates a novel information search task for evaluating large ecological displays.

关键词：

来源：评论

学校读者我要写书评

暂无评论

A maintainability model for industrial software systems using design level metrics

A maintainability model for industrial software systems usin...

引用

Working Conference on Reverse engineering

作者： S. Muthanna K. Kontogiannis K. Ponnambalam B. Stacey Department of Electrical & Computer Engineering University of Waterloo Waterloo ONT Canada Nortel SEAL Laboratory University of Waterloo Ottawa Canada Department of Systems Design Engineering University of Waterloo Waterloo ONT Canada

ISBN: (纸本)0769508812

Software maintenance is a time consuming and expensive phase of a software product's life-cycle. The paper investigates the use of software design metrics to statistically estimate the maintainability of large software systems, and to identify error prone modules. A methodology for assessing, evaluating and, selecting software metrics for predicting software maintainability is presented. In addition, a linear prediction model based on a minimal set of design level software metrics is proposed. The model is evaluated by applying it to industrial software systems.

关键词： Computer industry Software systems Software design Software maintenance Software metrics Software quality Maintenance engineering design engineering Seals Predictive models

来源：评论

学校读者我要写书评

暂无评论

Cost, quality, and environments tradeoffs for printed circuit board assembly

引用

engineering Economist 2000年第3期45卷 206-231页

作者： Thurston, Deborah L. Alvarado, Jorge Mangun, Donna Hoffman III, William F. Decision Systems Laboratory University of Illinois Urbana-Champaign United States University of Illinois Department of Mechanical and Industrial Engineering United States Department of Civil and Environmental Engineering University of Illinois Urbana-Champaign United States Design for Environment Programs Motorola Advanced Technology Center Motorola Labs United States

After exhausting all '"pollution prevention pays" opportunities, further efforts towards environmental protection often engender some type of cost to the manufacturer. Then, designers must weigh tradeoffs between environmental impacts and equally pressing needs to reduce costs, improve product quality, and reduce cycle time: all while meeting customer demands, which are the driving force behind the design process. Although there is a growing market for "green"' products as customers' desire to be environmentally responsible increases, it is extremely difficult to accurately assess the customer's actual willingness to pay for environmental protection. This paper first briefly reviews methods for assessing customer preferences. Then, it presents a decision model for use by design engineers to assist in making these tradeoffs between cost, quality, and environmental impact in which customer preferences can be reflected in weighting factors assigned by the design engineer. Qualitative HOQ information is used as a starting point to derive a mathematical programming formulation for multi-objective optimization. Finally, an illustrative example for printed circuit board assembly is provided.

关键词： Costs

来源：评论

学校读者我要写书评

暂无评论

Scanning Patterns with Ecological Displays when Abstraction Levels are Separated

引用

Proceedings of the Human Factors and Ergonomics Society Annual Meeting 1999年第3期43卷 163 - 167页

Ecological interface design (EID) has shown success as an approach for interface design in the case of a process control microworld. However, in applying the EID approach to larger systems, questions of navigation and integration of abstract information arise. In this study, three ecological displays were developed for an industry-scale simulated power plant from an abstraction-decomposition model of that plant. In one of the displays, the abstraction levels were temporally separated. In the other two displays the abstraction levels were temporally integrated. When using the temporally separated display, subjects developed distinct temporal scanning patterns along the abstraction dimension. The nature and characteristic of the scanning patterns suggests that functional integration is an important design element when designing large ecological displays.

关键词：

来源：评论

学校读者我要写书评

暂无评论

Work Domain Analysis for Intentional systems

引用

Proceedings of the Human Factors and Ergonomics Society Annual Meeting 1999年第3期43卷 333 - 337页

作者： John R. Hajdukiewicz Catherine M. Burns Kim J. Vicente Robert G. Eggleston Cognitive Engineering Laboratory Department of Mechanical and Industrial Engineering University of Toronto Advanced Interface Design Laboratory Department of Systems Design Engineering University of Waterloo Air Force Research Laboratory Human Effectiveness Directorate Wright-Patterson Air Force Base

Work domain analysis (WDA) is an approach developed by Rasmussen (1985) for representing the structure of complex work environments. Many examples of the approach have surfaced in the literature, predominantly of physically coupled causal systems (e.g., process control). For causal systems, the environment is strongly constrained by the laws of nature. This approach can also be used for representing intentional systems (e.g., military command and control), although there is some controversy on this issue. For intentional systems, the environment is strongly constrained by actors' intentions, values, and priorities of practice. This paper discusses the differences between causal and intentional systems and provides direction on how to proceed with a WDA for intentional systems. A WDA is presented for emergency ambulance dispatch management and military command and control to illustrate the approach. Finally, a discussion of the implications and future research recommendations are presented.

关键词：

来源：评论

学校读者我要写书评

暂无评论

Neural networks: the state of the art

Neural networks: the state of the art

引用

International Conference on Microelectronics, ICM

作者： M.S. Kamel Pattern Analysis and Machine Intelligence Laboratory Department of Systems Design Engineering University of Waterloo Waterloo ONT Canada

Artificial neural networks (ANNs) have demonstrated their success in many applications due to their ability to solve some problems with relative ease of use and the model-free property they enjoy. ANNs can solve problems without the need to understand or learn the analytical and statistical properties of the problem nor the solution steps. Research in ANNs has resulted in a variety of models and learning algorithms. In this paper, a brief review of recent advances in the field is presented. The paper then focuses on the recent work conducted by the author's group on modular neural networks. In particular, the paper discusses the different modular structures, modes of interactions, capabilities, co-operation among modules and fusion of their decisions. Performance of these models has proven to be superior to nonmodular neural networks.

关键词： Neural networks Artificial neural networks Computer errors Multilayer perceptrons Supervised learning Feedback Pattern analysis Machine intelligence System analysis and design design engineering

来源：评论

学校读者我要写书评

暂无评论

Multiple classifier hierarchical architecture for handwritten Arabic character recognition

Multiple classifier hierarchical architecture for handwritte...

引用

International Joint Conference on Neural Networks (IJCNN)

作者： N.M. Wanas M.R. El-Sakka M.S. Kamel Pattern Analysis and Machine Intelligence Laboratory Department of Systems Design Engineering University of Waterloo Waterloo ONT Canada

Combining decisions from several classifiers can be used to improve on the results of handwritten characters recognition. There are different methods to combine these decisions, most of which are static. We present an architecture that integrates learning into the voting scheme used to aggregate individual decisions. The focus of the work is to make the decision fusion a more adaptive process. This approach makes use of feature detectors responsible for gathering information about the input to perform adaptive decision aggregation. The approach is tested on handwritten Arabic character recognition. The results showed an improvement over any individual classifier, as well as different static classifier combining schemes.

关键词： Character recognition Voting Handwriting recognition Neural networks Bayesian methods Pattern recognition Aggregates Optical character recognition software Decision making Multi-layer neural network

来源：评论

学校读者我要写书评

暂无评论

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

请选择保存的检索档案：

请选择收藏分类：

通借通还

建议与咨询 留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

请选择保存的检索档案： 新增检索档案 确定 取消

请选择收藏分类： 新增自定义分类 确定 取消

通借通还

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

请选择保存的检索档案：

请选择收藏分类：