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361 results on '"McAdams, Daniel"'

182. Design theory and methodology

Author

McAdams, Daniel A.

Subjects
Industrial design -- Conferences, meetings and seminars, Business, Engineering and manufacturing industries
Abstract

The mission of the DTM Committee is to facilitate and enhance the development of design theories and the methods that grow from them. The 24th International Conference on Design Theory [...]

Published
2012

196. Distributed Ideation: Idea Generation in Distributed Capstone Engineering Design Teams.

Author

Glier, Michael W., Schmidt, Susanne R., Linsey, Julie S., and Mcadams, Daniel A.

Subjects
BUILDING stones, BRAINSTORMING, MECHANICAL engineering, STUDENTS
Abstract

This paper documents two studies in distributed idea generation at Texas A&M. The first study is a controlled two-factor experiment wherein three-person groups of mechanical engineering capstone design students generate solutions to a simple design problem using either brainstorming or a modified 635 method in either a distributed or collocated team. Eight groups participated in the experiment; two were assigned to each of the four experimental conditions. The ideas produced are evaluated in terms of quantity, quality, novelty, and variety, using a series of metrics described in the paper. The modified 635 method produced the highest quantity of non-redundant ideas; the team's distribution had no significant effect on the number of ideas they produced. Distributed teams using the modified 635 method generated the highest quality ideas, while collocated teams using the same method produced the most variety. Collocated brainstorming teams generated the most novel ideas. The other study presented in this paper documents the performance of two globally distributed Mechanical Engineering capstone design teams. These student teams are composed of members from Texas A&M College Station and Texas A&M Qatar in Doha Qatar. The two teams participate in a controlled ideation experiment to generate possible solutions to their respective design problem; a third team with all its members in College Station also participates in the experiment. The teams generate ideas using the modified 635 method. This experiment confirms that the modified 635 method is a viable ideation technique for distributed teams and seems to confirm that the quantity of ideas generated with the method is not dependent on the team's distribution. Furthermore, instructors for the globally distributed teams observe that the teams performed on par with typical collocated capstone design teams. [ABSTRACT FROM AUTHOR]

Published
2011

197. A Framework and Representation for Universal Product Design.

Author

McAdams, Daniel A. and Kostovich, Vincent

Subjects
PRODUCT design, UNIVERSAL design, COMMERCIAL products, PEOPLE with disabilities
Abstract

This paper presents a product analysis framework for improving research and practice in universal design—a term commonly used to describe goods and services that are usable both by persons with a disability and by typical users. Seventeen percent of the U.S. population has some form of a disability. Nevertheless, many companies are unfamiliar with approaches to achieving universal design. A key element of the framework presented here is the combination of activity diagrams and functional models. The framework is applied in the analysis of 20 pairs of products that satisfy a common high-level need, but are different in that one of the products is intended for fully able users while the other is intended for persons with a disability or with reduced functioning. Discoveries based on the analysis include categorizing the differences between typical and universal products as functional, morphological, or parametric. Additionally, it appears that simple products can be made more accessible through parametric changes, whereas more complex products require functional additions and changes. [ABSTRACT FROM AUTHOR]

Published
2011

198. Aberration correction for improving the performance of a DMHL system

Author

McAdams, Daniel R. and Cole, Daniel G.

Abstract

Dynamic maskless holographic lithography (DMHL) is a new micro-manufacturing technique that has no moving parts. The laser light used for patterning is directed in all three dimensions with a hologram displayed on a liquid-crystal spatial light modulator (SLM). Optical aberrations, like spherical aberration due to refractive index mismatch between the photoresist and the immersion oil of the high-NA objective or astigmatism due to the deformations in the surface of the SLM, can degrade the performance of the system. Degraded performance includes a decrease in potential patterning volume and pattern fidelity and an increase in patterning time. This paper presents a way to correct for these aberrations using Zernike polynomials. The optimal Zernike coefficients are found by maximizing a sharpness metric. The effect of aberration correction on the DMHL process is quantified by measuring the patterning volume. DMHL manufactured features made with this aberration correction method show a marked improvement over features made without correction. It is even possible to correct for misaligned optics with this method.

Published
2012
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199. In memory of Clive L. Dym.

Author

McMahon, Chris, Liu, Ying, McAdams, Daniel, Brown, David C., Jin, Yan, and Birmingham, William P.

Subjects
ENGINEERING design, PRODUCT design, DECISION making
Published
2016
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