Browsing Doctoral Theses by Title
Now showing items 17662-17681 of 22187
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The S. cerevisiae calponin homologue SCP1 regulates stability and organization of the actin cytoskeleton
(Massachusetts Institute of Technology, 2003)Calponins and transgelins are members of a conserved family of actin-associated proteins widely expressed from yeast to humans. While a role for calponin in muscle cells has been described, the biochemical activities and ... -
Sacred politics : religious leaders and conflict in Israel
(Massachusetts Institute of Technology, 2019)My dissertation examines why religious leaders adopt nationalist positions and how these positions contribute to the duration of an ongoing conflict. I propose a general framework of sacred politics that incorporates the ... -
Safe trajectory planning of autonomous vehicles
(Massachusetts Institute of Technology, 2006)This thesis presents a novel framework for safe online trajectory planning of unmanned vehicles through partially unknown environments. The basic planning problem is formulated as a receding horizon optimization problem ... -
SafeJava : a unified type system for safe programming
(Massachusetts Institute of Technology, 2004)Making software reliable is one of the most important technological challenges facing our society today. This thesis presents a new type system that addresses this problem by statically preventing several important classes ... -
Safety of a multi-vehicle system in mixed communication environments
(Massachusetts Institute of Technology, 2007)Recent news events and statistics demonstrate the frequent occurrence of pile-up crashes on highways. A predominant reason for the occurrence of such crashes is that current vehicles (including those equipped with an ... -
Safety of light water reactor fuel with silicon carbide cladding
(Massachusetts Institute of Technology, 2013)Structural aspects of the performance of light water reactor (LWR) fuel rod with triplex silicon carbide (SiC) cladding - an emerging option to replace the zirconium alloy cladding - are assessed. Its behavior under accident ... -
Safety verification and control for collision avoidance at road intersections
(Massachusetts Institute of Technology, 2018)Car crashes cause a large number of fatalities and injuries, with about 33,000 people killed and 2.3 million injured in the United States every year. To prevent car crashes, the government and automotive companies have ... -
Safety-driven early concept analysis and development
(Massachusetts Institute of Technology, 2015)As aerospace systems become increasingly complex and the roles of human operators and autonomous software continue to evolve, traditional safety-related analytical methods are becoming inadequate. Traditional hazard analysis ... -
Salt effects on micellization, micellar growth, and phase behavior of aqueous solutions of nonionic surfactants
(Massachusetts Institute of Technology, 1993) -
Salvage cartographies : mapping, futures, and landscapes in northwest British Columbia
(Massachusetts Institute of Technology, 2016)This dissertation examines how the proliferation of digital mapping technologies and the contraction of government research institutions have reformatted contests over resources, sovereignty, and local belonging in the ... -
Sample-based motion planning in high-dimensional and differentially-constrained systems
(Massachusetts Institute of Technology, 2010)State of the art sample-based path planning algorithms, such as the Rapidly-exploring Random Tree (RRT), have proven to be effective in path planning for systems subject to complex kinematic and geometric constraints. The ... -
Sampling and quantization for optimal reconstruction
(Massachusetts Institute of Technology, 2011)This thesis develops several approaches for signal sampling and reconstruction given different assumptions about the signal, the type of errors that occur, and the information available about the signal. The thesis first ... -
Sampling error and environmental noises in passive microwave rainfall retrieval from space
(Massachusetts Institute of Technology, 1996) -
Sampling in computer vision and Bayesian nonparametric mixtures
(Massachusetts Institute of Technology, 2014)The field of computer vision focuses on understanding and reasoning about the visual world. Due to the complexity of this problem, researchers often focus on one specific component of this large task, such as segmentation ... -
Sampling in human cognition
(Massachusetts Institute of Technology, 2010)Bayesian Decision Theory describes optimal methods for combining sparse, noisy data with prior knowledge to build models of an uncertain world and to use those models to plan actions and make novel decisions. Bayesian ... -
Sampling time-resolved phenomena
(Massachusetts Institute of Technology, 2018)Broadly speaking, time-resolved phenomena refers to three dimensional capture of a scene based on the time-of-flight principle. Since speed and and time are proportional quantities, knowing time-of-flight allows one to ... -
Sampling-based algorithms for dimension reduction
(Massachusetts Institute of Technology, 2007)Can one compute a low-dimensional representation of any given data by looking only at its small sample, chosen cleverly on the fly? Motivated by the above question, we consider the problem of low-rank matrix approximation: ... -
Sampling-based Algorithms for Fast and Deployable AI
(Massachusetts Institute of Technology, 2021-09)We present sampling-based algorithms with provable guarantees to alleviate the increasingly prohibitive costs of training and deploying modern AI systems. At the core of this thesis lies importance sampling, which we use ... -
Sampling-based algorithms for optimal path planning problems
(Massachusetts Institute of Technology, 2012)Sampling-based motion planning received increasing attention during the last decade. In particular, some of the leading paradigms, such the Probabilistic RoadMap (PRM) and the Rapidly-exploring Random Tree (RRT) algorithms, ... -
Sampling-based algorithms for stochastic optimal control
(Massachusetts Institute of Technology, 2014)Controlling dynamical systems in uncertain environments is fundamental and essential in several fields, ranging from robotics, healthcare to economics and finance. In these applications, the required tasks can be modeled ...
