Relevant bibliographies by topics / Computer engineering, n.e.c

Academic literature on the topic 'Computer engineering, n.e.c'

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Published: 10 December 2022
Last updated: 28 January 2023

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Journal articles on the topic "Computer engineering, n.e.c"

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Wang, A. T. "Finite-Simulation Error Bounds for Estimated K-Year Forces." Journal of Offshore Mechanics and Arctic Engineering 111, no. 4 (November 1, 1989): 273–77. http://dx.doi.org/10.1115/1.3257095.

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Computer simulations have been used frequently to calculate design loads associated with a specific return period for offshore structures. However, two important questions persistently confront engineers who simulate load events on computers to estimate k-year forces: 1) How accurate is the estimated k-year force (say, 100-yr force) obtained through a computer simulation of n years (e.g., n = 1000) compared to that which would result from a much longer simulation? 2) When can we stop a computer simulation? Or how many simulation years are needed to reach a specified level of reliability for a certain k-year force? This paper presents solutions to these two questions under the assumption that the input parameters are completely known and the formulas used to compute loads are one hundred percent correct. Given a confidence level C (e.g., C = 80 or 90 percent) and an arbitrary but fixed number of simulation years, a method is identified to find an estimated k-year force and an error bound α, such that Pr(|estimator−k-yearforce|<α)>C (1) In addition, when the required confidence C and error bound α are given, a procedure is given to stop a computer simulation as soon as inequality (1) is satisfied. These results are not dependent on the statistical distribution of the underlying force distribution. Therefore, one does not have to assume that forces are of a specific probability distribution (such as lognormal, exponential, etc.).
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Ohtani, H., and M. Hillert. "Calculation of VCN and TiCN phase diagrams." Calphad 17, no. 1 (January 1993): 93–99. http://dx.doi.org/10.1016/0364-5916(93)90037-c.

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Kouba, R., K. Rayane, and M. Keddam. "Thermodynamic reassessment of Fe-N and Fe-N-C systems." Calphad 71 (December 2020): 102197. http://dx.doi.org/10.1016/j.calphad.2020.102197.

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Cai, Haoyuan, Qi Ye, and Dong-Ling Deng. "Sample complexity of learning parametric quantum circuits." Quantum Science and Technology 7, no. 2 (March 1, 2022): 025014. http://dx.doi.org/10.1088/2058-9565/ac4f30.

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Abstract Quantum computers hold unprecedented potentials for machine learning applications. Here, we prove that physical quantum circuits are probably approximately correct learnable on a quantum computer via empirical risk minimization: to learn a parametric quantum circuit with at most n c gates and each gate acting on a constant number of qubits, the sample complexity is bounded by O ~ ( n c + 1 ) . In particular, we explicitly construct a family of variational quantum circuits with O(n c+1) elementary gates arranged in a fixed pattern, which can represent all physical quantum circuits consisting of at most n c elementary gates. Our results provide a valuable guide for quantum machine learning in both theory and practice.
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Grujicic, M., L. Kaufman, and W. S. Owen. "The (V,Nb)(C,N) precipitate/austenite equilibrium in the Fe-C-N-V-Nb-Mn system." Calphad 10, no. 1 (January 1986): 37–47. http://dx.doi.org/10.1016/0364-5916(86)90008-8.

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Miki, Nobuyuki, and Oono Hideki. "A Study on Equivalent C/N Degradation of Digital Terrestrial Television Broadcasting and C/N of Carrier." Journal of the Institute of Image Information and Television Engineers 54, no. 1 (2000): 127–30. http://dx.doi.org/10.3169/itej.54.127.

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Wang, Guoming. "Efficient quantum algorithms for analyzing large sparse electrical networks." Quantum Information and Computation 17, no. 11&12 (September 2017): 987–1026. http://dx.doi.org/10.26421/qic17.11-12-5.

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Analyzing large sparse electrical networks is a fundamental task in physics, electrical engineering and computer science. We propose two classes of quantum algorithms for this task. The first class is based on solving linear systems, and the second class is based on using quantum walks. These algorithms compute various electrical quantities, including voltages, currents, dissipated powers and effective resistances, in time poly(d, c,log(N), 1/λ, 1/e), where N is the number of vertices in the network, d is the maximum unweighted degree of the vertices, c is the ratio of largest to smallest edge resistance, λ is the spectral gap of the normalized Laplacian of the network, and e is the accuracy. Furthermore, we show that the polynomial dependence on 1/λ is necessary. This implies that our algorithms are optimal up to polynomial factors and cannot be significantly improved.
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Glazoff, Michael V., Michael C. Gao, Laurent Capolungo, Michael P. Brady, Gabriel O. Ilevbare, Yukinori Yamamoto, Qing-Qiang Ren, Jonathan D. Poplawsky, Jianguo Yu, and Feng Zhang. "Concurrent Precipitation of Nb(C,N) and Metastable M23C6 in Alloy 347H at 700°C and 750°C: Computer Simulations and Comparison to Experiment." JOM 74, no. 4 (February 4, 2022): 1444–52. http://dx.doi.org/10.1007/s11837-021-05140-9.

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Kapturkiewicz, Andrzej, and Anna Kamecka. "Luminescence properties of [Ir(C^N)2(N^N)]+ complexes: relations between DFT computation results and emission band-shape analysis data." RSC Advances 11, no. 47 (2021): 29308–22. http://dx.doi.org/10.1039/d1ra05430a.

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Heryana, Yayan Heryana. "Analysis of Orifice in Biodiesel Reactor with Hydrodynamic Cavitation System using Computational Fluid Dynamics." Jurnal Keteknikan Pertanian 10, no. 1 (May 18, 2022): 85–94. http://dx.doi.org/10.19028/jtep.010.1.85-94.

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Reactor technology for the transesterification process of vegetable oils or animal fats with methanol has been widely developed to obtain biodiesel products that comply with standards but at the lowest cost. The hydrodynamic cavitation reactor with orifice type is a choice for this purpose. This research aims to determine the optimal orifice design from several orifice designs tested through CFD simulation. Computer simulations performed on orifices A, B, C and D using the Schnerr and Sauer models show that orifice C is optimal for cavitation at an absolute inlet pressure of 3x105 N/m2 with the use of methanol as fluid. The parameters studied in the computer simulation are velocity, pressure, turbulent kinetic energy and vapor volume fraction. At the absolute inlet pressure of 3x105 N/m2, the maximum speed is 28.69 m/s, the minimum pressure is 12266 N/m2, the maximum vapor volume fraction is 0.98, and the maximum turbulent kinetic energy is 12.75 m2/s2. The results of simulation were compared with experiments conducted on a hydrodynamic cavitation reactor using orifices C and D. Measurements of the velocity and pressure parameters showed that there were no significant deviations between the results of the computer simulation and the experiment.
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Dissertations / Theses on the topic "Computer engineering, n.e.c"

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Yang, Xuejun. "Random testing of open source C compilers." Thesis, The University of Utah, 2015. http://pqdtopen.proquest.com/#viewpdf?dispub=3704288.

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Compilers are indispensable tools to developers. We expect them to be correct. However, compiler correctness is very hard to be reasoned about. This can be partly explained by the daunting complexity of compilers.

In this dissertation, I will explain how we constructed a random program generator, Csmith, and used it to find hundreds of bugs in strong open source compilers such as the GNU Compiler Collection (GCC) and the LLVM Compiler Infrastructure (LLVM). The success of Csmith depends on its ability of being expressive and unambiguous at the same time. Csmith is composed of a code generator and a GTAV (Generation-Time Analysis and Validation) engine. They work interactively to produce expressive yet unambiguous random programs. The expressiveness of Csmith is attributed to the code generator, while the unambiguity is assured by GTAV. GTAV performs program analyses, such as points-to analysis and effect analysis, efficiently to avoid ambiguities caused by undefined behaviors or unspecified behaviors.

During our 4.25 years of testing, Csmith has found over 450 bugs in the GNU Compiler Collection (GCC) and the LLVM Compiler Infrastructure (LLVM). We analyzed the bugs by putting them into different categories, studying the root causes, finding their locations in compilers' source code, and evaluating their importance. We believe analysis results are useful to future random testers, as well as compiler writers/users.

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Jiang, Yuandong. "Large Scale Distributed Semantic N-gram Language Model." Wright State University / OhioLINK, 2011. http://rave.ohiolink.edu/etdc/view?acc_num=wright1316200173.

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Tanga, Rajan M. "Computer aided software engineering tool for generating C code." Ohio : Ohio University, 1988. http://www.ohiolink.edu/etd/view.cgi?ohiou1182872759.

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He, Jiliang. "Silyhydrazines : chemistry and pyrolytic conversion to Si-N-C ceramic materials." Thesis, McGill University, 1995. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=29044.

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A new synthetic route to silylhydrazine molecules and polymers has been developed by the heterodehydrocoupling of organosilanes with hydrazines. A dimethyltitanocene catalyst has been employed to facilitate the dehydrocoupling reaction. The dehydrocoupling was shown to proceed by stepwise replacement of Si-H with hydrazino groups. The controlled hydrolysis of Ph$ sb2$Si(NHNHMe)$ sb2$ formed a hydrazinodisiloxane. Cyclizations of Ph$ sb2$Si(NHNHMe)$ sb2$ to form cyclic silylhydrazines were achieved by the reaction with n-BuLi/Ph$ sb2$SiCl$ sb2,$ or MeI (or HCl or Ph$ sb2$SiCl$ sb2),$ or thermolysis. Crystal structures of Ph$ sb2$Si(NHNR)(NRNH)SiPh$ sb2$ (R = H, Me) reveal chair (R = H) and twist-boat (R = Me) conformations of the Si$ sb2$N$ sb4$ ring, respectively. Planar and pyramidal nitrogen geometries were found to coexist in a hydrazino unit. A preceramic polymer, synthesized by the polymerization of MeHSiCl$ sb2$ with hydrazine in an appropriate ratio, was pyrolyzed to Si$ sb3$N$ sb4$/SiC$ rm sb{x}$N$ rm sb{y}$ in 67-80% ceramic yields. It is proposed that the structural unit of this polymer is a tetraazadisilacyclohexane bridged by MeHSi groups. This assignment is based on $ sp{1}$H and $ sp{29}$Si NMR measurements, as well as by comparison with the well-defined reaction product of Me$ sb2$Si(NHNH) $ sb2$SiMe$ sb2$ with MeHSiCl$ sb2.$ The pyrolysis was carried out from room temperature to 1500$ sp circ$C under argon and studied by using thermogravimetric analysis, solid-state $ sp{29}$Si NMR spectroscopy, infrared spectroscopy, x-ray powder diffraction, and elemental analysis. Serial structural changes were characterized in the pyrolyzed solid products. The ceramic product of this polymer at 1100$ sp circ$C was found to possess a quasi-metallic electrical conductivity ($ sigma$ = 10$ sp3$ ($ Omega$cm)$ sp{{-}1}),$ and was evaluated as an electrode material.
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Morse, Benjamin 1979. "A C/C++ front end for the Daikon dynamic invariant detection system." Thesis, Massachusetts Institute of Technology, 2002. http://hdl.handle.net/1721.1/29653.

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Thesis (M.Eng. and S.B.)--Massachusetts Institute of Technology, Dept. of Electrical Engineering and Computer Science, 2002.
Includes bibliographical references (p. 73-75).
This thesis details the implementation and performance of a Daikon front end for the C and C++ languages. The Daikon dynamic invariant detection suite is a system designed to extract formal specifications from programs, in the form of information about their variables and their relationships to each other. The system consists of a front end and the analysis engine. The front end instruments the source code of a target program, inserting code that outputs the values of the program's variables when run. The user compiles and runs the instrumented program, generating a trace file that contains variable values. This data is then sent to Daikon proper, which performs analysis on it and reports invariants about the program variables. Daikon is a useful tool that can discover invariants that current static methods cannot find. While the invariant analysis tool is language independent, the front ends -- tools that instrument of the user code -- must be written for every language to be instrumented. There is a huge base of pre-existing code written in C/C++ for which invariants can be discovered. C and C++ are also widely deployed, comprise a large segment of software currently in development, and are therefore valuable candidates for analysis. The key difficulty in instrumenting a type-unsafe language like C is that the instrumented program has to determine what variables are valid, and to what extent; so that it does not output garbage values or cause a segmentation fault by dereferencing an invalid pointer.
by Benjamin Morse.
M.Eng.and S.B.
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Guo, Philip Jia. "A scalable mixed-level approach to dynamic analysis of C and C++ programs." Thesis, Massachusetts Institute of Technology, 2006. http://hdl.handle.net/1721.1/36767.

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Thesis (M. Eng.)--Massachusetts Institute of Technology, Dept. of Electrical Engineering and Computer Science, 2006.
Includes bibliographical references (p. 107-112).
This thesis addresses the difficult task of constructing robust and scalable dynamic program analysis tools for programs written in memory-unsafe languages such as C and C++, especially those that are interested in observing the contents of data structures at run time. In this thesis, I first introduce my novel mixed-level approach to dynamic analysis, which combines the advantages of both source- and binary-based approaches. Second, I present a tool framework that embodies the mixed-level approach. This framework provides memory safety guarantees, allows tools built upon it to access rich source- and binary-level information simultaneously at run time, and enables tools to scale to large, real-world C and C++ programs on the order of millions of lines of code. Third, I present two dynamic analysis tools built upon my framework - one for performing value profiling and the other for performing dynamic inference of abstract types - and describe how they far surpass previous analyses in terms of scalability, robustness, and applicability. Lastly, I present several case studies demonstrating how these tools aid both humans and automated tools in several program analysis tasks: improving human understanding of unfamiliar code, invariant detection, and data structure repair.
by Philip Jia Guo.
M.Eng.
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Saha, Sagnik M. Eng Massachusetts Institute of Technology. "Adding Support for MC/DC instrumentation in the Green Hills C/C++ compiler." Thesis, Massachusetts Institute of Technology, 2019. https://hdl.handle.net/1721.1/121681.

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This electronic version was submitted by the student author. The certified thesis is available in the Institute Archives and Special Collections.
Thesis: M. Eng., Massachusetts Institute of Technology, Department of Electrical Engineering and Computer Science, 2019
Cataloged from student-submitted PDF version of thesis.
Includes bibliographical references (pages 49-50).
This thesis presents the design and implementation of Modified Condition / Decision Coverage (MC/DC) instrumentation in the Green Hills C/C++ compiler. When a specfic option is enabled, the compiler now identied each boolean expression and annotates the generated binary with special instructions. When a test suite is run, these extra instructions emit logging information. A separate program then uses that information to determine and display the degree of coverage achieved. Taken together, my tools allow a user to run any program and determine the extent of MC/DC coverage achieved by their tests.
by Sagnik Saha.
M. Eng.
M.Eng. Massachusetts Institute of Technology, Department of Electrical Engineering and Computer Science
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Liburd, Soyini (Soyini Denise) 1980. "An N-version electronic voting system." Thesis, Massachusetts Institute of Technology, 2004. http://hdl.handle.net/1721.1/28441.

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Thesis (M. Eng.)--Massachusetts Institute of Technology, Dept. of Electrical Engineering and Computer Science, 2004.
Includes bibliographical references (p. 103-109).
The ballot battles of the 2000 US Presidential Election clearly indicate that existing voting technologies and processes are not sufficient to guarantee that every eligible voter is granted their right to vote and implicitly to have that vote counted, as per the fifteenth, nineteenth, twenty fourth and twenty sixth amendments to the US constitution [1-3]. Developing a voting system that is secure, correct, reliable and trustworthy is a significant challenge to current technology [3, 4]. The Secure Architecture for Voting Electronically (SAVE) demonstrates that N-version programming increases the reliability and security of its systems, and can be used to increase the trustworthiness of systems. Further, SAVE demonstrates how a viable practical approach to voting can be created using N-version programming. SAVE represents a significant contribution to voting technology research because of its design, and also because it demonstrates the benefits of N-version programming and introduces these benefits to the field of voting technology.
by Soyini D. Liburd.
M.Eng.
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Rudd, Robert Andrew M. Eng Massachusetts Institute of Technology. "An improved scalable mixed-level approach to dynamic analysis of C and C++ programs." Thesis, Massachusetts Institute of Technology, 2010. http://hdl.handle.net/1721.1/61250.

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Thesis (M. Eng.)--Massachusetts Institute of Technology, Dept. of Electrical Engineering and Computer Science, 2010.
Cataloged from PDF version of thesis.
Includes bibliographical references (p. 85-86).
In this thesis, I address the challenges of developing tools which use a mixed-level approach to dynamic binary analysis. The mixed-level approach combines advantages of both source- based and binary-based approaches to dynamic analysis, but comes with the added challenge of dealing with the implementation details of a specific implementation of the target language. This thesis describes the implementation of three existing tools which use the mixed-level approach: Fjalar, a C/C++ dynamic analysis framework, Kvasir, A C/C++ value profiling tool, and Dyncomp, a tool for inferring the abstract types of a C or C++ program. Additionally, this thesis describes the steps I took in increasing the maintainability and portability of these tools. I investigated and documented platform specific dependencies; I documented the process of merging in upstream changes of Valgrind, the Dynamic Binary Instrumenter Fjalar is built on, to aid Fjalar in keeping in-sync with Valgrind bug-fixes; and I implemented a tool for debugging Dyncomp errors.
by Robert Andrew Rudd.
M.Eng.
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Dagher, Issam J. "Gradient based fuzzy c-means algorithm." FIU Digital Commons, 1994. http://digitalcommons.fiu.edu/etd/2652.

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A clustering algorithm based on the Fuzzy c-means algorithm (FCM) and the gradient descent method is presented. In the FCM, the minimization process of the objective function is proceeded by solving two equations alternatively in an iterative fashion. Each iteration requires the use of all the data at once. In our proposed approach one datum is presented at a time to the network and the minimization is proceeded using the gradient descent method. Compared to FCM, the experimental results show that our algorithm is very competitive in terms of speed and stability of convergence for large number of data.
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Books on the topic "Computer engineering, n.e.c"

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Darnell, Peter A. Software engineering in C. New York: Springer-Verlag, 1988.

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Darnell, Peter A. C, a software engineering approach. New York: Springer-Verlag, 1990.

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E, Margolis Philip, ed. C, a software engineering approach. 3rd ed. New York: Springer, 1996.

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B, D'Orazio T., ed. C programming for engineering and computer science. New York: WCR/McGraw-Hill, 1999.

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Engineering problem solving with C. 3rd ed. Upper Saddle River, NJ: Pearson/Prentice Hall, 2005.

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Engineering problem solving with C. 4th ed. Boston: Pearson, 2013.

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A, Ingber Jeanine, ed. Engineering problem solving with C++. 3rd ed. Boston: Pearson, 2012.

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C for electronics and computer engineering technology. Englewood Cliffs, N.J: Prentice Hall, 1990.

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veler, Gerd Ku. Informatik fu r Ingenieure und Naturwissenschaftler: Grundlagen, Programmieren mit C/C++, Grosses C/C++-Praktikum. 6th ed. Wiesbaden: Vieweg + Teubner in GWV Fachverlage GmbH, 2009.

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Ince, D. Object-oriented software engineering with C++. London: McGraw-Hill Book Co., 1991.

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Book chapters on the topic "Computer engineering, n.e.c"

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Lai, Zhong Hong, Jae Ho Jeon, Jing Chuan Zhu, and Zhong Da Yin. "Mo-Si-C-N Multi-Layer Anti-Oxidation Coating on C/C Composites." In Key Engineering Materials, 1899–902. Stafa: Trans Tech Publications Ltd., 2007. http://dx.doi.org/10.4028/0-87849-456-1.1899.

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Emamy-Khansary, M. Reza. "Cuts, c-Cuts, and c-Complexes over the n-Cube." In Lecture Notes in Computer Science, 603–6. Berlin, Heidelberg: Springer Berlin Heidelberg, 2011. http://dx.doi.org/10.1007/978-3-642-21527-8_67.

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Jang, Chul Sik, Young Rae Cho, Myung Chang Kang, Won Sub Chung, and Kwang Ho Kim. "Microstructure and Mechanical Properties of Cr-C-N, Cr-Si-N and Cr-Si-C-N Coatings by a Hybrid Coating System." In Key Engineering Materials, 2224–27. Stafa: Trans Tech Publications Ltd., 2007. http://dx.doi.org/10.4028/0-87849-410-3.2224.

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Fiedor, Jan, Zdeněk Letko, João Lourenço, and Tomáš Vojnar. "On Monitoring C/C++ Transactional Memory Programs." In Mathematical and Engineering Methods in Computer Science, 73–87. Cham: Springer International Publishing, 2014. http://dx.doi.org/10.1007/978-3-319-14896-0_7.

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Faruque, Saleh. "N-Ary Coded Modulation." In SpringerBriefs in Electrical and Computer Engineering, 85–104. Cham: Springer International Publishing, 2016. http://dx.doi.org/10.1007/978-3-319-41202-3_7.

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Scheinker, Alexander, and Miroslav Krstić. "Non-C $$^{2}$$ ES." In SpringerBriefs in Electrical and Computer Engineering, 55–63. Cham: Springer International Publishing, 2016. http://dx.doi.org/10.1007/978-3-319-50790-3_5.

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Ahmad, Nurul Haszeli, Syed Ahmad Aljunid, and Jamalul-lail Ab Manan. "Taxonomy of C Overflow Vulnerabilities Attack." In Software Engineering and Computer Systems, 376–90. Berlin, Heidelberg: Springer Berlin Heidelberg, 2011. http://dx.doi.org/10.1007/978-3-642-22191-0_33.

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Li, Xu-Guang, Silviu-Iulian Niculescu, and Arben Çela. "Invariance Property for Critical Imaginary Roots with Index $$n=1$$ n = 1." In SpringerBriefs in Electrical and Computer Engineering, 63–72. Cham: Springer International Publishing, 2015. http://dx.doi.org/10.1007/978-3-319-15717-7_7.

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Mészáros, András, and Miklós Telek. "Markov Decision Process and Linear Programming Based Control of MAP/MAP/N Queues." In Computer Performance Engineering, 179–93. Cham: Springer International Publishing, 2014. http://dx.doi.org/10.1007/978-3-319-10885-8_13.

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Liu, Wen Jun, Yong Zheng, and Wei Hao Xiong. "Microstructures and Mechanical Properties of Nano-Composite Ti(C,N)-Based Cermets." In Key Engineering Materials, 1214–17. Stafa: Trans Tech Publications Ltd., 2007. http://dx.doi.org/10.4028/0-87849-410-3.1214.

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Conference papers on the topic "Computer engineering, n.e.c"

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Rasin, Ahmed Tasnim, and Sharif Mohammad Mominuzzaman. "Comparison of photoresponse characteristics between nitrogen and phosphorous doped n-C/p-Si heterostructure." In 2008 International Conference on Electrical and Computer Engineering. IEEE, 2008. http://dx.doi.org/10.1109/icece.2008.4769328.

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Alam, A., S. Ahmed, M. K. Alam, and Quazi D. M. Khosru. "C-V characteristics of n-channel double gate MOS structures incorporating the effect of interface states." In 2008 International Conference on Electrical and Computer Engineering. IEEE, 2008. http://dx.doi.org/10.1109/icece.2008.4769251.

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Lilley, David G. "A General Excel/VBA Computer Code for Rapid Calculation of Temperature and Product Species With C-H-O-N-S Fuels." In ASME 2006 International Design Engineering Technical Conferences and Computers and Information in Engineering Conference. ASMEDC, 2006. http://dx.doi.org/10.1115/detc2006-99562.

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A general calculation procedure has being developed that permits very rapid calculation of general fuel-air combustion with many parameter variations. The program calculations are via Excel/VBA with immediate graphics of the parameter effects on the results. Thus, an extensive range of parameter effects may be quickly investigated and assessed. The very-general fuel is specified by way of its C-H-O-N-S content and additional water content and the “air” by way of the volume percent of oxygen, and the other component of “air” (nitrogen and/or carbon dioxide), each specified by the user. The temperature of each inlet (fuel and “air”) is specified by the user. The methodology and computer code takes as input also the equivalence ratio. Then, results of adiabatic flame temperature are calculated along with the equilibrium product species both with and without dissociation. Alternatively, the products temperature may be specified and the heat transfer in the combustor is then calculated. The computer code is very user friendly, with automatic nested loops for parameter variation and automatic generation of graphs, which are particularly useful in assessing the particular process under consideration.
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Subramanian, Raghavendran, and Kazem Kazerounian. "Improved Molecular Model of a Peptide Unit for Proteins." In ASME 2006 International Design Engineering Technical Conferences and Computers and Information in Engineering Conference. ASMEDC, 2006. http://dx.doi.org/10.1115/detc2006-99315.

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Pauling, Corey and Branson in their seminal paper in 1951 reported numerical values for the bond lengths and bond angles for a peptide unit in proteins. These values became the standard model for several decades after that. This classic peptide model was either confirmed or improved upon by other researchers over the years, by using more advanced X-Ray diffraction equipments. In this paper, we have made an attempt to calibrate the values of these bond lengths and bond angles based on a systematic and deterministic approach applied to a collection of proteins defined structurally in the Protein Data Bank (PDB). Our method is based on the assumption that a peptide chain is a serial chain of identical rigid bodies connected by revolute joints (i.e. dihedral angles). The proposed procedure first computes the best estimate for the dihedral angles in the presence of inaccuracies in the atoms’ coordinates data. Then these values are used to find the conformation of the peptide chain using the calibrated model of the peptide unit. Through an optimization process, the structural error (RMSD of all atoms) between the resultant conformation and the PDB data is minimized to yield the best values for the bond length and bond angles in the calibrated peptide unit. Our numerical experiments indicate that by making small changes in the Pauling-Corey peptide model parameters (0.15% to 8.7%) the structural error is reduced significantly (3.0% to 57.4%). The optimum values for the bond angles and bond lengths are as follow: Bond Lengths: N-C(A): 1.4721Å, C(A)-C: 1.6167Å, C-N: 1.2047Å, C=O: 1.1913Å and N-H: 0.9621Å. Bond Bending Angles: N-C(A)-C: 109.6823°, C(A)-C=0: 119.518°, C(A)-C-N: 114.5553°, O=C-N: 125.9233°, C-N-H: 123.5155°, C-N-C(A): 121.5756°, C(A)-N-H: 114.901°. Peptide bond torsion angle: ω: 179.4432°.
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Abhary, Kazem, and Ahmad Nourbakhsh. "Computer-Aided Analysis of Free Transverse-Vibration of Stepped Beams." In ASME 2002 International Design Engineering Technical Conferences and Computers and Information in Engineering Conference. ASMEDC, 2002. http://dx.doi.org/10.1115/detc2002/dac-34054.

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This method simulates a stepped beam by substructuring it into its n spans and treating each of which as a uniform continuous beam, clamped to its adjacent spans. Thus, at each step of the stepped beam, the two adjacent spans have identical displacements, slopes, bending moments and shearing forces. Theoretically speaking, these boundary conditions along with those of the extreme ends (total of 4n), when applied to the vibration equation of corresponding spans, generate a set of 4n simultaneous equations whose solution generates the natural frequencies of the stepped beam, as well as the constants of the vibration equation of all spans. The mathematical algorithm furnished herein degenerates the above-mentioned 4n simultaneous equations into groups of four at a time and solves them one after the other. The algorithm is programmed in VISUAL C++, and its accuracy is justified via application to a five-span stepped-beam.
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Ruan, Sipu, Gregory S. Chirikjian, and Jianzhong Ding. "Lower Bounds of the Allowable Motions of One N-Dimensional Ellipsoid Contained in Another." In ASME 2018 International Design Engineering Technical Conferences and Computers and Information in Engineering Conference. American Society of Mechanical Engineers, 2018. http://dx.doi.org/10.1115/detc2018-85851.

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This paper studies the representations of a subset of the allowable motions for an N-dimensional ellipsoid inside another slightly larger ellipsoid without collision based on the idea of the Kinematics of Containment. As an extension to the previous work on the closed-form lower bounds, this paper proposes another two lower bounds based on the first-order algebraic condition of containment and the closed-form Minkowski difference between two ellipsoids respectively. Querying processes for a specific configuration of the moving ellipsoid and the calculations of the volume of the proposed lower bounds in configuration space (C-space) are introduced. Examples for the proposed lower bounds in 2D and 3D Euclidean space are implemented and the corresponding motion volumes in C-space are compared with different shapes of the ellipsoids. Finally a case study of the application on automated assembly is introduced.
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Medichalam, Madhu S., Jami J. Shah, and Roshan D’Souza. "N-Rep: A Neutral Feature Representation to Support Feature Mapping and Data Exchange Across Applications." In ASME 2004 International Design Engineering Technical Conferences and Computers and Information in Engineering Conference. ASMEDC, 2004. http://dx.doi.org/10.1115/detc2004-57712.

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The proliferation of different feature based systems has made feature data exchange an important issue. Unlike geometry data exchange, where different representations use the same fundamental concepts; the most popular being B-Rep and CSG [Shah et al. 88], different feature representation schemes use different concepts to represent features corresponding to the application and domain. Therefore, feature data transfer between applications not only involves transfer of instance data but also transformation of feature concepts. This paper presents N-Rep, an application independent declarative language, for feature definition that includes topology, topological relationships, geometry, geometric relationships, parameters and parametric relationships. N-Rep has been designed to serve three roles, viz., (a) to generate feature recognition algorithms for recognizing features from geometry, (b) to generate feature producing procedures to be used in design by feature approaches, and (c) to serve as a neutral feature data exchange medium between representations.
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Gonzalez-Perez, Ignacio, Alfonso Fuentes, Faydor L. Litvin, and Kenichi Hayasaka. "Computerized Design of Muti-Gear Drives for Function Generation." In ASME 2009 International Design Engineering Technical Conferences and Computers and Information in Engineering Conference. ASMEDC, 2009. http://dx.doi.org/10.1115/detc2009-86252.

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A new approach for generation of functions based on application of a multi-gear drive is proposed. The approach provides solution to the functional Ψ(α) = gn(gn−1(⋯(g1(α)))) wherein Ψ(α) is the function assigned for generation and gi(α), i = 1,⋯,n, is the transmission function of pair i of conjugated non-circular gears. The specifics characteristics of the proposed approach are: (a) integrated impact by application of n synchronized gear drives, (b) favourable shape of centrodes, and (c) observation of limits of pressure angle. The developed theory is illustrated with several detailed numerical examples.
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Pop, Petru A. "Influence of Equivalence Dynamic Parameters Variation About Behavior Structure of Milling Machine Tools." In ASME 2007 International Design Engineering Technical Conferences and Computers and Information in Engineering Conference. ASMEDC, 2007. http://dx.doi.org/10.1115/detc2007-34050.

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This paper has presented a study about behavior structure at universal precision milling machine for tool-shop by the variation of machine’s Equivalence Dynamic Parameters (EDP). These parameters of milling machine: equivalent mass – m [kg], equivalent damping constant – c [N/ms−1], equivalent stiffness – k [N/m], have been determined by experimental tests and from calculations, obtaining a exactly range values for each parts. All these had been calculated in function of eigenvalues of milling machine-ωn, which had been determined by experimental tests and mathematical model of dynamic milling process. For that, has been created an original program “Study mck”, which is used by SIMULINK program from MATLAB R14.v7.01 system. Then were executed 11 simulation tests, which were done by certain combinations of m, c, k values and cutting forces parameters, recorded approximately 300 diagrams. The results were significant has determined the chatter frequency very close to eigenvalues of machine by an original method, which had confirmed the experimental measures and analytical calculus and certain solution for improving the dynamic structure of milling machine by its equivalent dynamic parameters.
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Ahmed, Tousif, Maha Bhouri, Samer Kahwaji, Dominic Groulx, and Mary Anne White. "Experimental Investigation of Thermal Management of Tablet Computers Using Phase Change Materials (PCMs)." In ASME 2016 Heat Transfer Summer Conference collocated with the ASME 2016 Fluids Engineering Division Summer Meeting and the ASME 2016 14th International Conference on Nanochannels, Microchannels, and Minichannels. American Society of Mechanical Engineers, 2016. http://dx.doi.org/10.1115/ht2016-7067.

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This paper presents a study of thermal management of tablet computers (tablet PCs) using phase change materials (PCMs) encapsulated in aluminized laminated film under continuous operation. The experimental setup consists of original tablet PC parts and a simplified dummy printed circuit board (PCB) with a thermal response similar to the original PCB. Two PCMs were used in the experiments, n-eicosane and PT-37 (a commercial PCM from PureTemp). These PCMs have similar melting temperatures (n-eicosane – 35.6 °C; PT-37 – 36.3 °C) but different latent heats of fusion (n-eicosane – 236 kJ/kg; PT-37 – 206 kJ/kg). Two encapsulations with different sizes (6″ × 2.6″, 7″ × 1.5″) but the same thickness (0.0792″ (2 mm)) were used in this study. The effects of inclination and power input level on the thermal behavior of the tablet were investigated. Experiments showed that PCM encapsulated in laminate film led to lower back cover temperature for constant heat flux applications. As much as a 20 °C temperature reduction of the back cover hotspot was achieved with encapsulated PCM. It was also observed that better thermal behavior was achieved both by the melting of PCMs and heat spreading through the laminate film. It was found that the rate of PCM melting is directly related to the power input. No significant effect on PCM melting and temperature history was observed in relation to the system inclination.
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Reports on the topic "Computer engineering, n.e.c"

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Tarko, Andrew P., Mario A. Romero, Vamsi Krishna Bandaru, and Cristhian Lizarazo. TScan–Stationary LiDAR for Traffic and Safety Applications: Vehicle Interpretation and Tracking. Purdue University, 2022. http://dx.doi.org/10.5703/1288284317402.

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To improve traffic performance and safety, the ability to measure traffic accurately and effectively, including motorists and other vulnerable road users, at road intersections is needed. A past study conducted by the Center for Road Safety has demonstrated that it is feasible to detect and track various types of road users using a LiDAR-based system called TScan. This project aimed to progress towards a real-world implementation of TScan by building two trailer-based prototypes with full end-user documentation. The previously developed detection and tracking algorithms have been modified and converted from the research code to its implementational version written in the C++ programming language. Two trailer-based TScan units have been built. The design of the prototype was iterated multiple times to account for component placement, ease of maintenance, etc. The expansion of the TScan system from a one single-sensor unit to multiple units with multiple LiDAR sensors necessitated transforming all the measurements into a common spatial and temporal reference frame. Engineering applications for performing traffic counts, analyzing speeds at intersections, and visualizing pedestrian presence data were developed. The limitations of the existing SSAM for traffic conflicts analysis with computer simulation prompted the research team to develop and implement their own traffic conflicts detection and analysis technique that is applicable to real-world data. Efficient use of the development system requires proper training of its end users. An INDOT-CRS collaborative process was developed and its execution planned to gradually transfer the two TScan prototypes to INDOT’s full control. This period will be also an opportunity for collecting feedback from the end user and making limited modifications to the system and documentation as needed.
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