This dissertation offers new capabilities of bit-level liveness verification in general and an in-depth formal analysis of communication fabrics with the objective of their scalable bit-level response verification. We show that the operations of industrially relevant hardware systems (communication fabrics in our case studies) can naturally give rise to a well-founded ordering in their state spaces. We provide an algebraic analysis of a set of industrially relevant communication fabrics. The analysis offers a rigorous mathematical justification of the Chatterjee-Kishinevsky invariants and their connection to the underlying network topology.

关键词：可缩放模型；模型检测；安全性；活性

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This thesis explores differences at the neuronal level between BMI operation and natural reaching.And in the end describes our progress in building an adaptive BMI system that takes into account the changes in neural activity that occurs in closed-loop, as well as our efforts in improving the long-term reliability of the system.

关键词：脑机接口；神经活动；信息编码；局部场电位

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Among all the harsh environment applications, high temperature applications have drawn lots of attention due to the emerging activity in automotive, turbine engine, space exploration and deep-well drilling telemetry. Silicon carbide has become the candidate for these harsh environment applications because of its wide bandgap, excellent chemical and thermal stability, and high breakdown electric field strength.

关键词：恶劣环境；碳化硅；场效应晶体管

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In late 2012, the Energy Systems Integration Facility (ESIF) is opening at the U.S. Department of Energy's (DOE) National Renewable Energy Laboratory (NREL). The facility includes 19 laboratories with a wide range of capabilities, and will give NREL and partnering organizations the opportunity to research electricity integration projects before deploying them in the field. The ESIF also includes visualization labs to help researchers understand the data collected during project experiments.

关键词：光机电；电力系统；可视化；可再生能源

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The first part of this thesis focuses on improving energy consumption of stream applications on multicore machines by exploiting the modularity and the static properties of Synchronous Dataflow (SDF). In the second part of this thesis, we focus on those compilation issues of stream programs.

关键词：高层抽象；多核机器；流程序；同步数据流；调度

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Power system simulations involving solution of thousands of stiff differential and algebraic equations (DAE) are extremely computationally intensive and yet crucial for grid security and reliability. Online simulation of minutes to hours for a large number of contingencies requires computational efficiency several orders of magnitude greater than what is todays state-of-the-art. We have developed an optimized simulator for single contingency analysis using efficient numerical algorithms implementation for solving DAE, and scaled it up for large-scale con-tingency analysis using MPI. A prototype parallel high speed extended term simu-lator (HSET) on in-house high performance computing (HPC) resources at Iowa State University (ISU) (namely Cystorm Supercomputer) is being developed. Since the simulation times across contingencies vary considerably, we have focused our efforts towards development of efficient scheduling algorithms through work stealing for maximal resource utilization and minimum overhead to perform faster than real time analysis. This chapter introduces a novel implementation of dynamic load balancing algorithm for dynamic contingency analysis. Results indicate potential for significant improvements over the state-of-the-art methods especially master-slave based load balancing typically used in power system community. Simulations of thousands of contingencies on a large real system were conducted and computational savings and scalability results are reported

关键词：光机电；电力系统；动态调度；应变分析

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We argue the wireless mesh networks are poorly equipped to serve as a meaningful countermeasure against largescale blackouts due to their intrinsically poor scaling properties and projects in this space must consider safety of both users and network operators as a first-order design priority. From these two insights, we frame a definition of dissent networks to capture the essential requirements for blackout circumvention solutions.

关键词：大规模停电；网络设计；解决方案

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This dissertation presents my recent work toward leveraging formal methods for NoC design and QoS verification.In particular, it addresses the problems of (1) verifying end-to-end latency bounds in a mesh network using abstraction; (2) scalable latency verification using compositional inductive proofs; and(3) optimal buffer sizing based on bounded model checking.

关键词：片上网络；服务质量；形式验证；服务质量合成

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Our approach can be decomposed roughly into two phases: a generalization phase, that learns from a training sequence an automaton generating similar sequences, and a supervision phase that enforces a speci_cation on the generated sequence, imposing constraints on the music in both the pitch and rhythmic domains. The supervision uses a measure adapted from Normalized Compression Distances (NCD) to estimate the divergence between generated melodies and the training melody and employs strategies to bound this divergence. An empirical evaluation is presented on a sample set of Jazz music.

关键词：即兴创作；即兴创作控制；安全监控；差异监控；爵士乐

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The information technology (IT) world has changed fundamentally and drastically from running software applications on a single computer with a single CPU to now running software as services in distributed and parallel computing environment. Power system operation has been also shifted from being solely based on off-line planning study to more and more real-time market-driven. Facing these challenges, we will discuss in this chapter how to design power system analysis and simulation software to take advantage of the new IT technologies and to meet the real-time application requirements, using the InterPSS project as a concrete example.

关键词：光机电；电力系统；分布式；仿真

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