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GTETD 檢索結果共 3958 筆,本頁資料從第 157 筆到第 168 筆

The effect of stress on Lamb wave propagation is relevant to both nondestructive evaluation and structural health monitoring because of changes in received signals due to both the associated strain and the acoustoelastic effect. A homogeneous plate that is initially isotropic becomes anisotropic under biaxial stress, and dispersion of propagating waves becomes direction....

By Navneet Gandhi-Electrical and Computer Engineering-GIT-masters-2010-08-30
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The prevalence of concrete and cement-based materials in the civil infrastructure plus the risk of failure makes structural health monitoring an important issue in the understanding of the complete life cycle of civil structures. Correspondingly, the field of nondestructive evaluation (NDE) has been maturing and now concentrates on the detection of flaws and defects, as....

By Dennis Patrick Schurr-Civil & Environmental Engineering-GIT-masters-2010-08-30
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After decades of standstill in intercity passenger rail in the United States, the Obama administration recently started major initiatives to implement high-speed ground transportation projects that are expected to improve the nations transportation system significantly, addressing most prevailing issues like congestion and energy prices while having positive effects on ....

By Dominik Ziemke-Civil & Environmental Engineering-GIT-masters-2010-08-30
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The number and scope of data driven streaming applications is growing. Such streaming applications are promising targets for effectively utilizing multi-cores because of their inherent amenability to pipelined parallelism. While existing methods of orchestrating streaming programs on multi-cores have mostly been static, real-world applications show ample variations in e....

By Farhana Afroz Aleen-Computing-GIT-masters-2010-08-30
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The ankle sprain is a common injury in basketball. A mechanism for this injury occurs when landing improperly from a jump. The concept of wedge and flare designs in shoes is (1) to offer benefit in reducing the potential for an ankle sprain while (2) not hindering performance or usability concerning basketball movements that are needed for successful play. The purpose w....

By Dale Sang Hyun Kim-Industrial Design-GIT-masters-2010-08-30
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My research centers upon designing transformative learning environments and supporting technologies. Kitchen Science Investigators (KSI) is an out-of-school transformative learning environment we designed to help young people learn science through cooking. My dissertation considers the question, 'How can we design a learning environment in which children discover the ut....

By Tamara Lynnette Clegg-Computing-GIT-doctoral-2010-08-30
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Growing need for application of electronics at temperatures beyond their rated limit, (usually > 150 oC) and the non availability of high temperature compatible electronics necessitates thermal management solutions that should be compact, scalable, reliable and be able to work in environments characterized by high temperature (150 -250 oC), mechanical shock and vibratio....

By Ashish Sinha-Mechanical Engineering-GIT-doctoral-2010-08-30
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The design of chromophores targets materials with optoelectronic properties necessary for advanced applications. Organic materials possess properties which emerge from the collective impact of the constituent backbone and substituents as well as their connectivity (i.e. molecular architecture), necessitating the exploration of novel conjugated architectures. This thesis....

By Anthony Joseph Zucchero-Chemistry and Biochemistry-GIT-doctoral-2010-08-30
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Novel surgical strategies for spinal disc repair are currently being developed that require materials that (1) possess the appropriate mechanical properties to mimic the tissue the material is replacing or repairing and (2) maintain their mechanical function for long durations without negatively affecting the tissue response of adjacent tissue (i.e. bone). Polymers form....

By Kathryn Elizabeth Smith-bioengineering program-GIT-doctoral-2010-08-27
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The skin serves as a semi-permeable barrier that protects the body from pathogens and water loss. The stratum corneum, the upper 10-15 µm layer of skin, is the primary barrier layer. Due to its structure, only drugs that are lipophilic and with a low molecular weight (<500 Da) can penetrate intact skin. This study examines the use of microdermabrasion as a method of re....

By Samantha Nacole Andrews-Biomedical Engineering-GIT-doctoral-2010-08-27
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This dissertation focuses on developing a predictive method for determining the dynamic densification behavior of thermite powder mixtures consisting of equivolumetric mixtures of Ta + Fe2O3 and Ta + Bi2O3. Of primary importance to these highly reactive powder mixtures is the ability to characterize the stress at which full compaction occurs, the crush strength, which c....

By David Anthony Fredenburg-Materials Science & Engineering-GIT-doctoral-2010-08-27
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The main objective of this research is to examine the performance, power noise, and thermal trade-offs in modern traditional (2D) and three-dimensionally-integrated (3D) architectures and to present design automation tools and physical design methodologies that enable higher reliability while maintaining microarchitectural performance for these systems. Five main resear....

By Michael Benjamin Healy-Electrical and Computer Engineering-GIT-doctoral-2010-08-27
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