Browsing by Subject "Design Theory"
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Item Exploring project collaboration systems in the building industry(Texas A&M University, 2006-10-30) Laepple, Eberhard SebastianThe use of Web-Based-Collaboration-Systems (WBCS) continues to grow as part of information technology development in the Architecture-Engineering-Construction (AEC) industry. WBCS provide different media channels to support collaboration across geographical distributed teams. However, many companies are still hesitant to integrate WBCS. This research provides an understanding of how WBCS are used in practice. Most distinctively, it obtained practice data from several major US architecture firms and examined about 30,000 transactions produced during actual design and planning projects as practicing architects, engineers and consultants used WBCS. The study investigated what information was used and exchanged among participants during the different design stages. This was related to the different media channels of WBCS. The raw project data has been coded and transformed into secondary data through computer-supported content analysis. Based upon categories from previous literature, such as communication, coordination and design theories, the data has been analyzed for sender, receiver, channel and content of information transmitted. The content has been characterized into work tasks, information handling behavior and design activities. Additional interviews with industry professionals produced information that had not been documented through WBCS and that corroborated the analytical findings. The combination of theory, quantitative, and qualitative analysis has been synthesized into a portrait of WBCS usage that was validated through triangulation. The analysis of digital records of design communication from practice through content analysis is a new research methodology in AEC. The evidence supporting design methods theory shows the changes in tasks and information handling in regards to the project phases. It indicates that the most frequent loops of design activity are Evaluation- Analysis-Synthesis and Evaluation-Synthesis-Evaluation. It documents the actual usage of WBCS based on descriptive statistics and Markov models. WBCS was used primarily as a document repository and calendaring tool. The remote team members used it more frequently than centrally located participants. The study shows the limitations of WBCS: none of the verbal communication was captured. More significant, the entire email exchange took place outside the WBCS. WBCS was used very extensively, if the implementation of the system supported the organizational structure and vice versa.Item Machine Learning Based Classification of Textual Stimuli to Promote Ideation in Bioinspired Design(2013-08-09) Glier, Michael WBioinspired design uses biological systems to inspire engineering designs. One of bioinspired design?s challenges is identifying relevant information sources in biology for an engineering design task. Currently information can be retrieved by searching biology texts or journals using biology-focused keywords that map to engineering functions. However, this search technique can overwhelm designers with unusable results. This work explores the use of text classification tools to identify relevant biology passages for design. Further, this research examines the effects of using biology passages as stimuli during idea generation. Four human-subjects studies are examined in this work. Two surveys are performed in which participants evaluate sentences from a biology corpus and indicate whether each sentence prompts an idea for solving a specific design problem. The surveys are used to develop and evaluate text classification tools. Two idea generation studies are performed in which participants generate and record solutions for designing a corn shucker using either different sets of biology passages as design stimuli, or no stimuli. Based 286 sentences from the surveys, a k Nearest Neighbor classifier is developed that is able to identify helpful sentences relating to the function ?separate? with a precision of 0.62 and recall of 0.48. This classifier could potentially double the number of helpful results found using a keyword search. The developed classifier is specific to the function ?separate? and performs poorly when used for another function. Classifiers developed using all sentences and participant responses from the surveys are not able to reliably identify helpful sentences. From the idea generation studies, we determine that using any biology passages as design stimuli increases the quantity and variety of participant solutions. Solution quantity and variety are also significantly increased when biology passages are presented one at a time instead of all at once. Quality and variety are not significantly affected by the presence of design stimuli. Biological stimuli are also found to lead designers to types of solution that are not typically produced otherwise. This work develops a means for designers to find more useful information when searching biology and demonstrates several ways that biology passages can improve ideation.