Thematische Bibliographien / SOLVER FOUNDATION

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Auswahl der wissenschaftlichen Literatur zum Thema „SOLVER FOUNDATION“

Autor: Grafiati

Veröffentlicht am 25. Juni 2021

Zuletzt aktualisiert am 9. Februar 2022

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Zeitschriftenartikel zum Thema "SOLVER FOUNDATION"

Fiedler, Josef, und Tomáš Koudelka. „Nonlinear Behaviour of Concrete Foundation Slab“. Applied Mechanics and Materials 821 (Januar 2016): 495–502. http://dx.doi.org/10.4028/www.scientific.net/amm.821.495.

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A layered model is used for nonlinear analysis of a foundation concrete slab. Calculation is performed using interaction with elastic Winkler-Pasternak subsoil model and considering plastic yielding of slab layers. Two Drucker-Prager yield criterions define a nonlinear material model for concrete. Computation is done by the SIFEL solver using the Finite Element Method.

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Liao, Ming Cheng, Zhen Ya Xiao und Yao Qing Gong. „Soil-Structure Interactions of Tube-in-Tube System of Tall Buildings Based on ODE Solver“. Applied Mechanics and Materials 204-208 (Oktober 2012): 1118–24. http://dx.doi.org/10.4028/www.scientific.net/amm.204-208.1118.

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A new analytical method for the analysis of interactions between the superstructure and foundation and foundation soil of a tall building is formulated. The computational model of a structural system and its foundation are simplified equivalently and continuously into a three-dimensional model, a combination of thin-walled tubes on a semi-infinite elastic subgrade. The various stiffness coefficients for evaluating elastic strain energy stored in foundation soil are as well derived by using the principle of energy equivalency. Some satisfying conclusions are obtained by the interaction analysis for the tube-in-tube structural system adopted by Guangdong Guomao Building.

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Svinicki, M. D. „A theoretical foundation for discovery learning.“ Advances in Physiology Education 275, Nr. 6 (Dezember 1998): S4. http://dx.doi.org/10.1152/advances.1998.275.6.s4.

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The processes of discovery learning are well grounded in current theories of learning. This article describes how cognitive learning theory supports the components of the discovery learning model. Three main characteristics of discovery learning that relate it to cognitive theory are 1) an emphasis on active learning, 2) the development of meaningful learning, and 3) the capacity to change attitudes and values toward the subject and the self as problem solver.

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Arboleda Molina, Orlando, und Steven Sotelo. „Construcción de aplicativos de programación por restricciones en Microsoft Solver Foundation y Windows Azure“. Scientia et technica 21, Nr. 4 (30.12.2016): 336. http://dx.doi.org/10.22517/23447214.11571.

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A nivel empresarial y académico se requiere la construcción de aplicativos para resolver problemas de optimización de restricciones, y que estos puedan ser ofrecidos como servicios en la nube. En el presente artículo se modela y resuelve un problema de optimización de restricciones, correspondiente al problema de transporte, usando para su modelamiento y posterior publicación como servicio en la nube, solo tecnología .Net, aplicable a problemas computacionalmente complejos de restricciones, usando Microsoft Solver Foundation que permite la construcción de poderosos aplicativos genéricos de pocas líneas de código, los cuales pueden ser fácilmente publicados como servicios web en Windows Azure.

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Lohar, Hareram, Anirban Mitra und Sarmila Sahoo. „Mode switching phenomenon in geometrically nonlinear free vibration analysis of in-plane inhomogeneous plates on elastic foundation“. Curved and Layered Structures 5, Nr. 1 (01.07.2018): 156–79. http://dx.doi.org/10.1515/cls-2018-0012.

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Abstract Effect of geometric nonlinearity onfree vibration behaviour of a non-uniform in-plane inhomogeneousplate on elastic foundation is carried out with an emphasis on mode switching phenomenon. The formulation is semianalytic displacement based and it is carried out in two distinct steps. First, the static problem is solved to find out the unknown displacement field by using minimum total potential energy principle. Secondly, subsequent dynamic problem is set up as an eigenvalue problem on the basis of the known displacement field. The governing set of equations in dynamic problem is obtained by using Hamilton’s principle. In static analysis, unknown co-efficient of the governing equations are solved using an iterative method, which is direct substitution with relaxation method. The dynamic problem is solved with the help of intrinsic Matlab solver. The results of the present method are validated with existing data. Backbone curve corresponding to different combinations of systemparameters are presented in non-dimensional plane.Mode switching is observed to occur in certain specific situation. The linear and nonlinear mode shapes are also furnished to support the presence of switching phenomenon.

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Saleem, Ayhan H., und Jowhar R. Mohammad. „Simulation of Mosul Dam Break Using Finite Volume Method“. Polytechnic Journal 10, Nr. 2 (30.12.2020): 10–20. http://dx.doi.org/10.25156/ptj.v10n2y2020.pp10-20.

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Mosul dam is an earth-fill embankment located north of Iraq on the Tigris River forming a reservoir with 11.11 km3 water storage capacity which is the largest dam in the country. The dam is built on a rock bed foundation, in which the dissolution process is dynamic in the zone where gypsum and anhydrite layers present. During the construction development seepage locations were found in the dam foundation and the grouting process is in progress until now to control this problem. Therefore, the possibility of the Mosul dam break is highlighted by previous studies. In this research, a FORTRAN code based on the finite volume method is modified to solve the two-dimensional shallow water equations and simulating the Mosul dam break. The computational domain discretized using unstructured triangular mesh. The solver applied Harten lax van leer with contact (HLLC) wave approximate Riemann solver to calculate the cell interface fluxes, and the semi-implicit scheme employed to solve the friction source term. The numerical scheme applied to two benchmark test cases, and the results showed that the presented model was robust and accurate especially in handling wet/dry beds, mixed flow regimes, discontinuities, negative water depths, and complex topography. The results of this study demonstrate that flood waves may reach the center of Mosul city in < 6 h and water depth may rise to 34 m after 7 h of Mosul dam breaking. Finally, the simulation results of the Mosul dam break were used to prepare an emergency action plan.

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Mihami, Fatima-zahra, und Volker Roeber. „AN EFFICIENT AND ROBUST GPGPU-BASED SHALLOW WATER MODEL“. Coastal Engineering Proceedings, Nr. 36v (28.12.2020): 47. http://dx.doi.org/10.9753/icce.v36v.waves.47.

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We present an efficient and robust numerical model for the solution of the Shallow Water Equations with the objective to develop the numerical foundation for an advanced free surface flow solver. The numerical solution is based on an explicit Finite Volume scheme on a staggered grid to ensure the conservation of mass and momentum across flow discontinuities and wet-dry transitions. This leads to an accurate numerical solution at low computational cost without the need for Riemann solvers. The efficiency of the lean numerical structure is further optimized through a CUDA-GPU implementation.Recorded Presentation from the vICCE (YouTube Link): https://youtu.be/xMnK_r7Tj1Q

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Sadeghi, J., A. Khajehdezfuly, M. Esmaeili und D. Poorveis. „An Efficient Algorithm for Nonlinear Analysis of Vehicle/Track Interaction Problems“. International Journal of Structural Stability and Dynamics 16, Nr. 08 (25.08.2016): 1550040. http://dx.doi.org/10.1142/s0219455415500406.

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In this paper, a new algorithm for solving the vehicle/track dynamic interaction problem is developed, aimed at reducing the computational cost. The algorithm called Advanced Solver Algorithm (ASA) uses the full Newton–Raphson incremental-iterative method in conjunction with the Newmark integration scheme to solve the equilibrium equations of the coupled vehicle/track system in time domain. Considering the track as a beam resting on a viscoelastic foundation and each vehicle as a wagon with ten degrees of freedom, the governing differential equations of motion of the vehicle/track system were derived. The wheel/rail contact was considered as a nonlinear Hertz spring and consequently the vehicle/track nonlinear dynamic interaction problem was solved. A comparison between the results of the ASA and those of the most advanced algorithm available was made to evaluate the efficiency of the ASA. It is confirmed that using the ASA can result in 40–70 % of reduction in computational cost.

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Yang, Guang Jun, Jian Jun Liu und Jing Sun. „Computational Aeroacoustic Simulation of Landing Gear“. Applied Mechanics and Materials 421 (September 2013): 110–15. http://dx.doi.org/10.4028/www.scientific.net/amm.421.110.

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RANS / NLAS numerical simulation method is adopted in this paper to carry out study on the aerodynamic noise analysis of basic landing gear configuration. Reynolds average N-S equation is solved with nonlinear turbulence model to establish the landing gear initial flow field, based on which, the NLAS (nonlinear acoustic solver) processed the turbulence fluctuation reconstruction to obtain the near-field acoustic characteristics of landing gear. Combined with the flow characteristics and the associated noise spectrum analysis, aerodynamic noise characteristics of landing gear are achieved. The work in this paper can provide useful research foundation on the following noise reduction design of landing gear.

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Xie, Xiang Dong, Xuan Wang und Li Qin. „The Influence of Static Response of Super Tall Building Mega-Frame Structure Caused by Changes of Frame Rigidities“. Applied Mechanics and Materials 166-169 (Mai 2012): 277–81. http://dx.doi.org/10.4028/www.scientific.net/amm.166-169.277.

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The superstructure and its foundation of a super tall building mega-frame structure are simplified equivalently and continuously to a stiffened-thin-wall tube on semi-infinite elastic subgrade. And the influences of static response on super tall building mega-frame structure caused by changes of frame rigidity are computed and analyzed with the three-dimensional model by semi-analytical approach based on ODE(Ordinary Differential Equation) Solver, considering the interactions of subgrade, foundation and superstructure. Then some valuable conclusions are obtained through analyzing the reasonable results of the numerical example.

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Dissertationen zum Thema "SOLVER FOUNDATION"

Nicholson, John Corbett. „Design of wind turbine tower and foundation systems: optimization approach“. Thesis, University of Iowa, 2011. https://ir.uiowa.edu/etd/1042.

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A renewed commitment in the United States and abroad to electricity from renewable resources, such as wind, along with the recent deployment of very large turbines that rise to new heights, makes obtaining the most efficient and safe designs of the structures that support them ever more important. Towards this goal, the present research seeks to understand how optimization concepts and Microsoft Excel's optimization capabilities can be used in the design of wind turbine towers and foundations. Additionally, this research expands on the work of previous researchers to study how considering the tower and foundation as an integral system, where tower support conditions are not perfectly rigid, affects the optimal design. Specifically, optimization problems are formulated and solved with and without taking into account the effect of deflections, resulting from the foundation's rotational and horizontal stiffness, on natural frequency calculations. The general methodology used to transcribe the design of wind turbine towers and foundations into an optimization problem includes: 1) collecting information on design requirements and parameter values 2) deciding how to analyze the structure 3) formulating the optimization problem 4) implementation using Microsoft Excel. Key assumptions include: 1) use of an equivalent lumped mass method for estimating natural frequency 2) International Electrotechnical Commission (IEC) 61400-1 extreme loading condition controls design (i.e. fatigue loading condition is not considered) 3) extreme loads are obtained from manufacturer provided structural load document that satisfies loading cases outlined in IEC 61400-1 4) wind forces on the tower are calculated in accordance with IEC 61400-1 5) optimization variables are continuous. The sum of the tower material and fabrication cost and the total foundation cost is taken as the objective function. Important conclusions from this work include: 1) optimization concepts and Microsoft Excel's optimization capabilities can be used to obtain reasonable conceptual level designs and cost estimates 2) detailed designs and cost estimates could be achieved using a solver capable of handling discrete optimization problems 3) considering the tower and foundation as an integral system results in a more expensive, but safer, design 4) for the assumed parameter values, the constraint on the tower's natural frequency was found to control the tower design and the bearing capacity constraint was found to control the foundation design 5) relaxing or tightening the limit on the natural frequency will result in the greatest benefit or penalty, respectively, on the optimum solution.

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Бабушкин, Б. Д., und B. D. Babushkin. „Разработка web-приложения решения задачи оптимизации состава многокомпонентной плавильной шихты : магистерская диссертация“. Master's thesis, б. и, 2021. http://hdl.handle.net/10995/99885.

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Магистерская диссертация посвящена разработке web-приложения решения задачи оптимизации состава многокомпонентной плавильной шихты. В ходе работы рассмотрены основные этапы разработки программного обеспечения: анализ предметной области; создание архитектуры программного обеспечения; разработка алгоритмического обеспечения и справочной документации; подготовка дистрибутива. В процессе выполнения работы реализованы все цели и задачи, стоящие перед проектом. Основными пользователями системы являются специалисты инженерно-технологического персонала доменных цехов, студенты. Научная новизна полученных в работе результатов заключается в применении нового метода эффективной организации и ведения специализированного алгоритмического и программного обеспечения решения задачи оптимизации расчета многокомпонентной плавильной шихты, ориентированного на повышение эффективности управления процессами получения качественных сплавов с использованием современных методов обработки информации: использование гибкой методологии разработки (Agile) и таск-трекера Atlassian JIRA для ведения проекта, взаимодействия с заказчиком во время разработки, отслеживания ошибок, визуального отображения задач и мониторинга процесса их выполнения; функциональное моделирование процессов для реализации web-приложения решения задачи оптимизации затрат на перевозку продукции на основе методологии IDEF0 и средства реализации Ramus Educational; использование методики коллективного владения программным кодом на основе сервиса (удаленного репозитория) Atlassian Bitbucket. Практическая значимость результатов заключается в том, что разработанное программное обеспечение позволит: производить расчёт оптимального состава многокомпонентной плавильной шихты; инженерно-технологическому персоналу литейных цехов металлургических предприятий сократить время на выполнение расчетов состава многокомпонентной плавильной шихты за счет реализации эргономичного web-интерфейса; специалистам отдела сопровождения информационных систем предоставляет условия для снижения трудозатрат на сопровождение, совершенствование и развитие системы с учетом пожеланий пользователей. Результаты работы могут быть использованы также в учебном процессе для обучения бакалавров и магистрантов по направлению «Информационные системы и технологии».
The master's thesis is devoted to the development of a web application for solving the problem of optimizing the composition of a multicomponent melting mixture. In the course of the work, the main stages of software development were considered: analysis of the subject area; creation of software architecture; development of algorithmic support and reference documentation; distribution kit preparation. In the process of performing the work, all the goals and objectives of the project have been realized. The main users of the system are specialists of the engineering and technological personnel of blast-furnace shops, students. The scientific novelty of the results obtained in the work lies in the application of a new method of effective organization and maintenance of specialized algorithmic and software for solving the problem of optimizing the calculation of a multicomponent melting charge, focused on increasing the efficiency of control of the processes of obtaining high-quality alloys using modern information processing methods: use of flexible development methodology (Agile) and the Atlassian JIRA task tracker for project management, interaction with the customer during development, tracking errors, visual display of tasks and monitoring the process of their implementation; functional modeling of processes for the implementation of a web-application for solving the problem of optimizing the costs of transportation of products based on the IDEF0 methodology and Ramus Educational tools; using the method of collective ownership of the program code based on the service (remote repository) Atlassian Bitbucket. The practical significance of the results lies in the fact that the developed software will allow: to calculate the optimal composition of the multicomponent melting mixture; to the engineering and technological personnel of foundries of metallurgical enterprises to reduce the time for performing calculations of the composition of a multicomponent melting mixture by implementing an ergonomic web interface; for specialists of the information systems support department, it provides conditions for reducing labor costs for maintaining, improving and developing the system, taking into account the wishes of users. The results of the work can also be used in the educational process for training bachelors and undergraduates in the direction of "Information systems and technologies".

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Жужгов, А. И., und A. I. Zhuzhgov. „Разработка web-приложения решения задачи оптимизации затрат на перевозку продукции : магистерская диссертация“. Master's thesis, б. и, 2021. http://hdl.handle.net/10995/99886.

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Объектом исследования является процесс транспортных перевозок. Предметом исследования выступают пункты потребления и пункты производства, автоматизация системы расчета оптимальной стоимости перевозки. Поставленные задачи: 1. Возможность ввода, корректировки и сохранения вариантов расчёта по оптимизации. 2. Отображение результатов расчета в графическом виде на пользовательской форме. Целью данной работы является создание информационного Web-приложения, который позволит рассчитывать оптимальную стоимость перевозки продукции, предоставлять пользователю результаты расчета в графическом виде. Научная новизна полученных в работе результатов заключается в применении нового метода эффективной организации и ведения специализированного алгоритмического и программного обеспечения решения задачи оптимизации затрат на перевозку продукции, ориентированного на повышение эффективности управления процессами грузоперевозок с использованием современных методов обработки информации: использование гибкой методологии разработки (Agile) и таск-трекера Atlassian JIRA для ведения проекта, взаимодействия с заказчиком во время разработки, отслеживания ошибок, визуального отображения задач и мониторинга процесса их выполнения; функциональное моделирование процессов для реализации web-приложения решения задачи оптимизации затрат на перевозку продукции на основе методологии IDEF0 и средства реализации Ramus Educational; использование методики коллективного владения программным кодом на основе сервиса (удаленного репозитория) Atlassian Bitbucket. Практическая значимость результатов заключается в том, что разработанное программное обеспечение позволит: производить расчёт оптимальной себестоимости транспортных перевозок для любого количества пунктов производства; специалистам транспортно-логистического операционного отдела сократить время на формирование отчетных документов, сократить время поиска необходимой фактической отчетной информации за счет реализации эргономичного web-интерфейса; специалистам отдела сопровождения информационных систем предоставляет условия для снижения трудозатрат на сопровождение, совершенствование и развитие системы с учетом пожеланий пользователей. Результаты работы могут быть использованы также в учебном процессе для обучения бакалавров и магистрантов по направлению «Информационные системы и технологии».
The object of the research is the process of transportation. The subject of the research is points of consumption and points of production, automation of the system for calculating the optimal cost of transportation. Assigned tasks: 1. Possibility of entering, adjusting and saving options for the calculation of optimization. 2. Displaying the calculation results in a graphical form on the user form. The purpose of this work is to create an information Web-application that will allow you to calculate the optimal cost of transportation of products, provide the user with the results of the calculation in a graphical form. The scientific novelty of the results obtained in the work lies in the application of a new method of effective organization and maintenance of specialized algorithmic and software solutions for the optimization of the cost of transportation of products, focused on improving the efficiency of management of cargo transportation processes using modern information processing methods: the use of flexible development methodology (Agile) and the Atlassian JIRA task tracker for project management, interaction with the customer during development, tracking errors, visual display of tasks and monitoring the process of their implementation; functional modeling of processes for the implementation of a web-application for solving the problem of optimizing the costs of transportation of products based on the IDEF0 methodology and Ramus Educational tools; using the method of collective ownership of the program code based on the service (remote repository) Atlassian Bitbucket. The practical significance of the results lies in the fact that the developed software will allow: to calculate the optimal cost of transportation for any number of points of production; for specialists of the transport and logistics operations department, to reduce the time for the formation of reporting documents, to reduce the time to search for the necessary actual reporting information due to the implementation of an ergonomic web interface; for specialists of the information systems support department, it provides conditions for reducing labor costs for maintaining, improving and developing the system, taking into account the wishes of users. The results of the work can also be used in the educational process for training bachelors and undergraduates in the direction "Information systems and technologies".

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Nogueira, Leila de Mello Yañez. „Estabilidade versus flexibilidade: a dicotomia necessária à inovação na gestão de recursos humanos em uma organização pública, estatal eestratégica como Bio-Manguinhos / Fiocruz“. reponame:Repositório Institucional da FIOCRUZ, 2009. https://www.arca.fiocruz.br/handle/icict/2500.

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Made available in DSpace on 2011-05-04T12:36:29Z (GMT). No. of bitstreams: 0 Previous issue date: 2009
Este trabalho propõe analisar o fenômeno da terceirização desenvolvido ao longo das duas últimas décadas em Bio-Manguinhos. Trata-se de um estudo de caso realizado na unidade de produção de vacinas e reagentes para diagnóstico da Fundação Oswaldo Cruz. Inicialmente foi realizado um estudo de cenário, analisando a política de gestão do trabalho desenvolvida pelo Estado brasileiro para as instituições públicas. A seguir, a análise passou a verificar a inserção da Fiocruz nessas políticas, desde a sua criação e no decorrer de vigência de diferentes formas de contratação, alternando da extrema rigidez para a total flexibilidade sempre com foco na gestão do trabalho, e, como essas políticas se refletiram no desempenho de Bio-Manguinhos. Baseado no contexto da conformação do Estado e na análise do desempenho da unidade, o trabalho critica a falta de planejamento e de prospecção dessas políticas, que favoreça a inovação de processos, produtos e procedimentos e o desempenho pleno de uma unidade de produção de insumos para a saúde, tão necessários ao atendimento das necessidades da população brasileira. Critica também, a ausência de um modelo de Estado consolidado que sirva de arcabouço à formulação dessas políticas. Devido às fortes críticas dos órgãos de controle acerca da extrapolação dos limites da terceirização praticada nas últimas duas décadas e à falta de definição clara desses marcos legais, o trabalho apresenta uma metodologia baseada nas atribuições dos cargos do plano de carreiras da Fiocruz e culmina com a apresentação de uma matriz de atribuições passíveis de serem realizadas por contratação indireta. Conclui pela necessidade de convivência de dois quadros de trabalhadores: um permanente formado por servidores, estáveis e de carreira e outro flexível, executado por contratação indireta, de caráter eventual, temporário ou de apoio às atividades relacionadas à missão de Bio-Manguinhos. O trabalho ainda sugere a aplicação da mesma metodologia às demais unidades da Fiocruz e que a instituição afirme, frente aos órgãos de controle, quais atividades que ela precisa manter no quadro de servidores permanente e quais ela quer delegar a terceiros sem contudo, ferir a legislação vigente. Por fim, constata-se que a metodologia apresentada ameniza, mas não resolve o problema, dessa forma, recomenda-se à Fiocruz buscar mecanismos que altere o modelo de gestão pelo qual está submetida a fim de viabilizar as duas formas de incorporação de mão-de-obra.

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Schwamenfeld, Steven. „"The foundation of British strength" national identity and the British common soldier /“. 2007. http://etd.lib.fsu.edu/theses/available/etd-11132007-112402.

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Thesis (Ph. D.)--Florida State University, 2007.
Advisor: Jonathan Grant, Florida State University, College of Arts and Sciences, Dept. of History. Title and description from dissertation home page (viewed March 18, 2008). Document formatted into pages; contains v, 209 pages. Includes bibliographical references.

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Bücher zum Thema "SOLVER FOUNDATION"

Foundation and structural problems: Solved by microcomputer. Oxford: BSP Professional Books, 1991.

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E, Backman Dana, Hrsg. Foundations of astronomy. Australia: Brooks/Cole Cengage Learning, 2011.

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Foundations of astronomy. Belmont, Calif: Wadsworth Pub. Co., 1990.

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Foundations of Astronomy. Belmont, CA: Thomson Brooks/Cole, 2008.

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Seeds, Michael A. Foundations of astronomy. 6. Aufl. Pacific Grove, CA: Brooks/Cole, 2000.

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Foundations of astronomy. Belmont, Calif: Wadsworth Pub. Co., 1986.

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Seeds, Michael A. Foundations of astronomy. 7. Aufl. Australia: Brooks/Cole, 2003.

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Seeds, Michael A. Foundations of astronomy. 3. Aufl. Belmont, Calif: Wadsworth Pub. Co., 1992.

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Seeds, Michael A. Foundations of astronomy. 4. Aufl. Belmont, CA: Wadsworth Pub. Co., 1997.

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Seeds, Michael A. Foundations of astronomy. Belmont, Calif: Wadsworth Pub., 1994.

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Mehr Quellen

Buchteile zum Thema "SOLVER FOUNDATION"

Petke, Justyna. „Solver performance on tractable CSPs: empirical evaluation“. In Artificial Intelligence: Foundations, Theory, and Algorithms, 25–41. Cham: Springer International Publishing, 2015. http://dx.doi.org/10.1007/978-3-319-21810-6_3.

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Machina, Mark J. „Choice Under Uncertainty: Problems Solved and Unsolved“. In Foundations of Insurance Economics, 49–82. Dordrecht: Springer Netherlands, 1992. http://dx.doi.org/10.1007/978-94-015-7957-5_2.

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You, Shu-Hung, Robert Bruce Findler und Christos Dimoulas. „Sound and Complete Concolic Testing for Higher-order Functions“. In Programming Languages and Systems, 635–63. Cham: Springer International Publishing, 2021. http://dx.doi.org/10.1007/978-3-030-72019-3_23.

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AbstractHigher-order functions have become a staple of modern programming languages. However, such values stymie concolic testers, as the SMT solvers at their hearts are inherently first-order.This paper lays a formal foundations for concolic testing higher-order functional programs. Three ideas enable our results: (i) our tester considers only program inputs in a canonical form; (ii) it collects novel constraints from the evaluation of the canonical inputs to search the space of inputs with partial help from an SMT solver and (iii) it collects constraints from canonical inputs even when they are arguments to concretized calls. We prove that (i) concolic evaluation is sound with respect to concrete evaluation; (ii) modulo concretization and SMT solver incompleteness, the search for a counter-example succeeds if a user program has a bug and (iii) this search amounts to directed evolution of inputs targeting hard-to-reach corners of the program.

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Sifneos, Peter E. „Learning to Solve Emotional Problems: A Controlled Study of Short-Term Anxiety-Provoking Psychotherapy“. In Novartis Foundation Symposia, 87–99. Chichester, UK: John Wiley & Sons, Ltd., 2008. http://dx.doi.org/10.1002/9780470719664.ch6.

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Neimark, Juri I. „Kepler laws and the two-body problem solved by Newton“. In Foundations of Engineering Mechanics, 319–35. Berlin, Heidelberg: Springer Berlin Heidelberg, 2003. http://dx.doi.org/10.1007/978-3-540-47878-2_28.

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Hook, Genine A. „Epistemological Foundations“. In Sole Parent Students and Higher Education, 17–33. London: Palgrave Macmillan UK, 2016. http://dx.doi.org/10.1057/978-1-137-59887-5_2.

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Montenegro, Manuel, Olha Shkaravska, Marko van Eekelen und Ricardo Peña. „Interpolation-Based Height Analysis for Improving a Recurrence Solver“. In Foundational and Practical Aspects of Resource Analysis, 36–53. Berlin, Heidelberg: Springer Berlin Heidelberg, 2012. http://dx.doi.org/10.1007/978-3-642-32495-6_3.

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Uhliarik, Ivor. „Foundations of a DPLL-Based Solver for Fuzzy Answer Set Programs“. In Studies in Computational Intelligence, 99–117. Cham: Springer International Publishing, 2019. http://dx.doi.org/10.1007/978-3-030-16469-0_6.

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Maurel, Marie-Christine. „Biological Foundations of Life“. In Planets Outside the Solar System: Theory and Observations, 331–64. Dordrecht: Springer Netherlands, 1999. http://dx.doi.org/10.1007/978-94-011-4623-4_22.

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Carusi, A. „NEO, The Spaceguard System and the Spaceguard Foundation“. In Collisional Processes in the Solar System, 333–49. Dordrecht: Springer Netherlands, 2001. http://dx.doi.org/10.1007/978-94-010-0712-2_22.

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Konferenzberichte zum Thema "SOLVER FOUNDATION"

Li, Yuzhu, Muk Chen Ong, Ove Tobias Gudmestad und Bjørn Helge Hjertager. „Numerical Analysis of Steep Wave-Induced Seabed Response and Liquefaction Around Gravity-Based Offshore Foundations“. In ASME 2018 37th International Conference on Ocean, Offshore and Arctic Engineering. American Society of Mechanical Engineers, 2018. http://dx.doi.org/10.1115/omae2018-77046.

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Gravity-based offshore foundations generally consist of a bottom slab and one or more cylindrical shafts on top of it. The geometry of the structure can strongly affect the flow pattern, dynamic wave pressure and further soil response and the liquefaction risk in the vicinity of the foundation. In this work, gravity-based foundations with bottom slabs of cylindrical shape and hexagonal prismatic shape are investigated. An integrated wave-structure-seabed interaction model applied in this work is developed in Open-FOAM, incorporating a nonlinear wave solver, a linear elastic structure solver and an anisotropic Biot’s poroelastic soil solver consisting of consolidation and liquefaction modules. Soil consolidation behavior in the presence of the foundations is investigated. It is found that the corners of the hexagonal foundation cause stress concentration in the soil. Therefore the initial effective stress around the hexagon corners is relatively high. Then, fully nonlinear waves modelled by fifth-order stream functions are simulated. Wave-induced pressure distributions and momentary liquefaction depths around the foundations are predicted.

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Navarro, Juan Carlos, und Jaime Chavarriaga. „Using microsoft solver foundation to analyse feature models and configurations“. In 2016 8th Euro American Conference on Telematics and Information Systems (EATIS). IEEE, 2016. http://dx.doi.org/10.1109/eatis.2016.7520125.

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Li, Yuzhu, Tian Tang und Muk Chen Ong. „A 3D Wave-Structure-Seabed Interaction Analysis of a Gravity-Based Wind Turbine Foundation“. In ASME 2017 36th International Conference on Ocean, Offshore and Arctic Engineering. American Society of Mechanical Engineers, 2017. http://dx.doi.org/10.1115/omae2017-61640.

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In order to prevent the future risk of soil and structural failures, it is essential to evaluate the dynamic seabed soil behaviors in the vicinity of the offshore foundations under dynamic wave loadings. Three-dimensional (3D) numerical analysis is conducted on the interaction between waves, seabed soil and a gravity-based wind turbine foundation. An OpenFOAM based numerical code developed by Tang [1]for wave-structure-seabed interaction is applied. The nonlinear waves are modeled by solving the Navier-Stokes equations for incompressible flow. The dynamic structural response of the foundation is computed using a linear elasticity solver. The transient responses of the seabed are solved by an anisotropic poro-elastic soil solver. The dynamic interaction between different physical domains is implemented by boundary condition coupling and updating in the integrated FVM based framework. The dynamic wave pressure on the structure and the seabed, the elastic responses of the structure and the changes of the pore pressure, shear stress and seepage flow structure in the seabed are investigated. Highest wave-induced shear stress along the foundation is predicted by solving the deformable structure model. For the seabed soil in the vicinity of the foundation, it is found that the presence of the foundation affects the soil responses by amplifying the wave induced shearing effect on the underlying seabed. Vertical distributions of the pore pressure in the seabed beneath the foundation are investigated with different angles relative to the wave propagation direction. A parametric study of isotropic and anisotropic soil permeability is performed and demonstrates that for the simulated soil in this work, the consideration of the anisotropic permeability is suggested.

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Paulsen, Bo Terp, Henrik Bredmose, Harry B. Bingham und Signe Schløer. „Steep Wave Loads From Irregular Waves on an Offshore Wind Turbine Foundation: Computation and Experiment“. In ASME 2013 32nd International Conference on Ocean, Offshore and Arctic Engineering. American Society of Mechanical Engineers, 2013. http://dx.doi.org/10.1115/omae2013-10727.

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Two-dimensional irregular waves on a sloping bed and their impact on a bottom mounted circular cylinder is modeled by three different numerical methods and the results are validated against laboratory experiments. We here consider the performance of a linear-, a fully nonlinear potential flow solver and a fully nonlinear Navier-Stokes/VOF solver. The validation is carried out in terms of both the free surface elevation and the inline force. Special attention is paid to the ultimate load in case of a single wave event and the general ability of the numerical models to capture the higher harmonic forcing. The test case is representative for monopile foundations at intermediate water depths. The potential flow computations are carried out in a two-dimensional vertical plane and the inline force on the cylinder is evaluated by the Morison equation. The Navier-Stokes/VOF computations are carried out in three-dimensions and the force is obtained by spatial pressure integration over the wettet area of the cylinder. In terms of both the free surface elevation and the inline force, the linear potential flow model is shown to be of limited accuracy and large deviations are generally seen when compared to the experimental measurements. The fully nonlinear Navier-Stokes/VOF computations are accurately predicting both the free surface elevation and the inline force. However, the computational cost is high relative to the potential flow solvers. Despite the fact that the nonlinear potential flow model is carried out in two-dimensions it is shown to perform just as good as the three-dimensional Navier-Stokes/VOF solver. This is observed for both the free surface elevation and the inline force, where both the ultimate load and the higher harmonic forces are accurately predicted. This shows that for moderately steep irregular waves a Morison equation combined with a fully nonlinear two-dimensional potential flow solver can be a good approximation.

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Schløer, Signe, Bo Terp Paulsen und Henrik Bredmose. „Application of CFD Based Wave Loads in Aeroelastic Calculations“. In ASME 2014 33rd International Conference on Ocean, Offshore and Arctic Engineering. American Society of Mechanical Engineers, 2014. http://dx.doi.org/10.1115/omae2014-24684.

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Two fully nonlinear irregular wave realizations with different significant wave heights are considered. The wave realizations are both calculated in the potential flow solver Ocean-Wave3D and in a coupled domain decomposed potential-flow CFD solver. The surface elevations of the calculated wave realizations compare well with corresponding surface elevations from laboratory experiments. In aeroelastic calculations of an offshore wind turbine on a monopile foundation the hydrodynamic loads due to the potential flow solver and Morison’s equation and the hydrodynamic loads calculated by the coupled domain decomposed potential-flow CFD solver result in different dynamic forces in the tower and monopile, despite that the static forces on a fixed monopile are similar. The changes are due to differences in the force profiles and wave steepness in the two solvers. The results indicate that an accurate description of the wave loads is very important in aeroelastic calculations especially in cases where the aerodynamic loads and damping are insignificant.

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Vita, Luca, Frederik Zhale, Uwe S. Paulsen, Troels F. Pedersen, Helge A. Madsen und Flemming Rasmussen. „A Novel Concept for Floating Offshore Wind Turbines: Recent Developments in the Concept and Investigation on Fluid Interaction With the Rotating Foundation“. In ASME 2010 29th International Conference on Ocean, Offshore and Arctic Engineering. ASMEDC, 2010. http://dx.doi.org/10.1115/omae2010-20357.

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This paper describes the recent developments regarding a new concept for deep sea offshore vertical axis wind turbines. The concept utilizes a cylindrical foundation rotating in the water. The 2D Navier-Stokes solver EllipSys2D has been used to investigate the interaction between the rotating foundation and a water flow stream passing the turbine. Lift and drag forces, and the friction moment on the rotating foundation of the turbine have been computed. The calculations are repeated for different operating conditions of the wind turbine on a range of rotational speeds. The Reynolds number, based on the diameter of the foundation, is 5×106.

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Van Buren, Eric. „Effect of Foundation Modelling Methodology on the Dynamic Response of Offshore Wind Turbine Support Structures“. In ASME 2011 30th International Conference on Ocean, Offshore and Arctic Engineering. ASMEDC, 2011. http://dx.doi.org/10.1115/omae2011-49492.

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When preliminarily investigating offshore wind turbine tower concepts it is common to develop optimization software for determining the best possible structural layout. This type of optimization procedure requires a large number of iterations to determine the best possible design and can be quite time consuming, particularly if the dynamic performance of each structure is to be investigated using an aero-hydro-servo-elastic type solver. When performing this type of “dynamic optimization” it is convenient to simply assume fixed boundary conditions at the soil-structure interface and ignore the dynamic properties of the foundation. Using fixed conditions allows for each of the layouts to be compared quickly and makes the computer models simple to create and more efficient in computation than if the foundation is included. Alternatively, the foundations of offshore wind turbine support structures can be represented with several different methods of varying complexity and detail. The most widely used method is the use of a distributed spring model commonly known as the p-y method. This approach is the primary method in most offshore wind turbine design standards for determining the static and cyclic reaction of offshore piles. In this work, two offshore wind support structure layouts are modeled and analyzed in the wind turbine analysis program HAWC2. Dynamic time series analyses under operating conditions are carried out for each tower with fixed conditions and with foundation models based on the p-y method in order to determine the appropriateness of utilizing fixed foundation conditions for optimization procedures.

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Bredmose, H., J. Skourup, E. A. Hansen, E. D. Christensen, L. M. Pedersen und A. Mitzlaff. „Numerical Reproduction of Extreme Wave Loads on a Gravity Wind Turbine Foundation“. In 25th International Conference on Offshore Mechanics and Arctic Engineering. ASMEDC, 2006. http://dx.doi.org/10.1115/omae2006-92258.

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A fully nonlinear 3D Navier Stokes solver with VOF (Volume of Fluid) treatment of the free surface is used to reproduce two extreme laboratory wave impacts on a gravity wind turbine foundation. The wave climate is irregular waves with a current. Numerical results for inline force, overturning moment and run-up are compared to measurements. The extreme wave loads for the two events are associated with slamming onto the under side of a horizontal platform placed 9.1m above the still water level. For such impacts, the computed wave loads are strongly sensitive to the shape of the incoming waves. A comparison with a Morison-type estimation of the wave loads shows that this much simpler approach can reproduce the overall trend of the wave load history, but not the extreme moment.

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Christensen, Erik Damgaard, Henrik Bredmose und Erik Asp Hansen. „Transfer of Boussinesq Waves to a Navier-Stokes Solver: Application to Wave Loads on an Offshore Wind Turbine Foundation“. In ASME 2009 28th International Conference on Ocean, Offshore and Arctic Engineering. ASMEDC, 2009. http://dx.doi.org/10.1115/omae2009-79629.

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Wave load and wave run-up is a very important issue to offshore wind turbine foundations. These are often installed in relatively shallow water on for instance sand banks. Therefore the non-linear shoaling and subsequently the force and run-up are important to address. The paper presents a method to combine a Boussinesq model with a CFD model. This gives an accurate tool to estimate wave loads on the foundations at acceptable computational times.

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Ulrich, Christian, und Thomas Rung. „Multi-Physics SPH Simulations of Launching Problems and Floating Body Interactions“. In ASME 2012 31st International Conference on Ocean, Offshore and Arctic Engineering. American Society of Mechanical Engineers, 2012. http://dx.doi.org/10.1115/omae2012-83367.

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The paper reports on the predictive prospects of the Smoothed-Particle-Hydrodynamics (SPH) method for jacket launching and foundation installation simulations. The type of considered applications usually involves the interaction between floating structures (e.g. barges and jackets) as well as structures and seabeds. Such scenarios pose challenges to mesh-based solvers, particle methods like SPH therefore are of advantage. The presented procedure captures floating body motions using a quaternion based 6DOF motion solver. Fluid/Soil interaction is predicted by an adequate suspension model. An efficient parallelization strategy is applied together with a dynamic variable resolution approach to handle large computational domains and structural details requiring a rather fine discretization.

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Berichte der Organisationen zum Thema "SOLVER FOUNDATION"

Strahs, G., und C. Tombari. Laying the Foundation for a Solar America: The Million Solar Roofs Initiative. Office of Scientific and Technical Information (OSTI), Oktober 2006. http://dx.doi.org/10.2172/893443.

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von Reis, K., A. S. Waegel und M. Totten. Solar Energy Research and Education Foundation. Final reports by task. Office of Scientific and Technical Information (OSTI), Dezember 1997. http://dx.doi.org/10.2172/10108883.

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Demchyna, Bohdan, und Iurii Kunanets. Commissioning of Sole Micropiles with Foundation Slabs into Compatible Construction During the Foundation Strengthening of an Existing Building. Intellectual Archive, Juni 2020. http://dx.doi.org/10.32370/ia_2020_06_19.

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Hylla, Nick J. The Solar Endowment: A PV Investment Roadmap for Universities and Foundations. Office of Scientific and Technical Information (OSTI), Juni 2018. http://dx.doi.org/10.2172/1460371.

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