The Journal of ERW and Mine Action Issue 7.1 (2003)

Research, Development and Technology in Mine Actio

Complexity reduction in automotive design and development

Thesis (S.M.)--Massachusetts Institute of Technology, System Design & Management Program, 2005.Includes bibliographical references (p. 117-118).Automobiles are complex products. High product complexity drives high levels of design and process complexity and complicatedness. This thesis attempts to reduce complicatedness in the automotive vehicle design and development process utilizing systems engineering tools including the design structure matrix (DSM) and axiomatic design concepts. The title of the thesis is a misnomer; complexity in automotive design and development is not "going away", but through the use of system engineering tools it is believed that the complicatedness of automotive design can be reduced and the consequences of decisions can be better understood at earlier stages in product development. A holistic view of the complexity and complicatedness challenge is considered, in order to identify high leverage points and generic insights that can be carried forward to future product development efforts. The goal is to translate generalized learning and systems thinking to the application of systems tools and processes that enable an understanding of complexity, in order to design better operating policies that guide positive change in systems. The analysis starts with considerations across the automotive enterprise, then the focus sharpens to the early stages of the product development process. Then a more detailed level of abstraction is considered when the automotive chassis tuning process and the interactions between the vehicle dynamics and noise and vibration (NVH) attributes are considered. The automotive rear suspension design is used to illustrate the concepts at the detailed level of abstraction. A rear suspension system case study is included, as it met a number of the challenges inherent in large-scale systems; it provides the elements of a technical challenge(cont.) and the integration of business and engineering issues, while encompassing detailed and broad issues that across different parts of the organization. The analysis demonstrates that the complicatedness of systems can be reduced and complexity can be managed through the use of the design structure matrix and axiomatic design concepts. Recommendations are made to foster improved decision-making that will result in improved automobiles and include the following: start simply with the application of these concepts on the critical few interactions that drive system performance, manage information explicitly, account and provision for risks in the development process, and reduce complexity and complicatedness through reuse.by Ronald J. Ziegler.S.M

Market entry mode of higher education internationalization: a case study of a post-1992 university

The aim of this research is to examine higher education (HE) internationalization in terms of international recruitment and academic collaboration with the focus on a single institution case study. The research investigates how the case study university conducts HE internationalization, identifies key implementation issues of HE internationalization, and develops an education-specific market entry dynamic framework. The discussion of the difference in the process of internationalization across faculties is also included. This research adopts the interpretivist philosophy and inductive approach, with focus of a single institution. Based on the positions and job responsibilities, the total of 20 interviewees from three key departments (Corporate, Department 2 and Faculty) were selected and 22 semi-structured interviews were conducted. The total of 329 pages of interview transcripts were analyzed. Other types of data collection include observation and secondary documentary data. The answers from each group were used in a comparative analysis, resulting in an overlap pattern structure that indicates the level of the university's internal integration. Data analysis strategies include content analysis, critical discourse analysis (CDA), colour coding, and categorization of meaning. The market entry dynamic framework is the main outcome of this research. This framework provides a number of education-specific modes of entry and programme delivery methods to guide institutions' internationalization. The implementation issues raised in this research indicate that the university's internal integration has a major impact on HE internationalization. These issues highlight the areas where the university needs to improve. Faculty-specific factors explain the difference in the process of internationalization across the four faculties at the case study university, and explain the reasons why the levels of internationalization are different among these faculties. This dynamic framework contributes to rich understanding of HE internationalization in terms of international recruitment and academic collaboration at the present case study, and creates a sound basis for further studies across the HE sector. Since there is only one university involved in this research, the associated research generalizability is low. Therefore, further research in this area is encouraged to test the generalizability of this framework at other universities through quantitative population studies

Evaluating human-centered approaches for geovisualization

Working with two small group of domain experts I evaluate human-centered approaches to application development which are applicable to geovisualization, following an ISO13407 taxonomy that covers context of use, eliciting requirements, and design. These approaches include field studies and contextual analysis of subjects' context; establishing requirements using a template, via a lecture to communicate geovisualization to subjects and by communicating subjects' context to geovisualization experts with a scenario; autoethnography to understand the geovisualization design process; wireframe, paper and digital interactive prototyping with alternative protocols; and a decision making process for prioritising application improvement. I find that the acquisition and use of real user data is key; that a template approach and teaching subjects about visualization tools and interactions both fail to elicit useful requirements for a visualization application. Consulting geovisualization experts with a scenario of user context and samples of user data does yield suggestions for tools and interactions of use to a visualization designer. The complex and composite natures of both visualization and human-centered domains, incorporating learning from both domains, with user context, makes design challenging. Wireframe, paper and digital interactive prototypes mediate between the user and visualization domains successfully, eliciting exploratory behaviour and suggestions to improve prototypes. Paper prototypes are particularly successful at eliciting suggestions and especially novel visualization improvements. Decision-making techniques prove useful for prioritising different possible improvements, although domain subjects select data-related features over more novel alternative and rank these more inconsistently. The research concludes that understanding subject context of use and data is important and occurs throughout the process of engagement with domain experts, and that standard requirements elicitation techniques are unsuccessful for geovisualization. Engagement with subjects at an early stage with simple prototypes incorporating real subject data and moving to successively more complex prototypes holds the best promise for creating successful geovisualization applications