Academic literature on the topic 'Effect of boundary Conditions'

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Journal articles on the topic "Effect of boundary Conditions"

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Chaiyaput, S., and M. Sugimoto. "Effect of Boundary Conditions in Segmental Lining Model on its Sectional Force." Lowland Technology International 18, no. 1 (2016): 9–22. http://dx.doi.org/10.14247/lti.18.1_9.

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Bertolotti, Fabio P., and Ronald D. Joslin. "Effect of Far-Field Boundary Conditions on Boundary-Layer Transition." Journal of Computational Physics 118, no. 2 (1995): 392–95. http://dx.doi.org/10.1006/jcph.1995.1109.

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Khodayari, Arezoo, Seth C. Olsen, Donald J. Wuebbles, and Daniel B. Phoenix. "Aviation NOx-induced CH4 effect: Fixed mixing ratio boundary conditions versus flux boundary conditions." Atmospheric Environment 113 (July 2015): 135–39. http://dx.doi.org/10.1016/j.atmosenv.2015.04.070.

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Finn, Bridgid, and David B. Miele. "Boundary Conditions of the Remembered Success Effect." Journal of Applied Research in Memory and Cognition 10, no. 4 (2021): 621–41. http://dx.doi.org/10.1016/j.jarmac.2021.07.009.

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Finn, Bridgid, and David B. Miele. "Boundary conditions of the remembered success effect." Journal of Applied Research in Memory and Cognition 10, no. 4 (2021): 621–41. http://dx.doi.org/10.1037/h0101866.

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Biswas, Debabrata. "Effect of boundary conditions on fluctuations measures." Physical Review E 57, no. 4 (1998): R3699—R3702. http://dx.doi.org/10.1103/physreve.57.r3699.

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Niu, Qian, and D. J. Thouless. "Quantum Hall effect with realistic boundary conditions." Physical Review B 35, no. 5 (1987): 2188–97. http://dx.doi.org/10.1103/physrevb.35.2188.

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Saharian, Aram, and Giampiero Esposito. "Casimir effect with non-local boundary conditions." Journal of Physics A: Mathematical and General 39, no. 18 (2006): 5233–47. http://dx.doi.org/10.1088/0305-4470/39/18/032.

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Wang, Chun Lei, Wen Bin Su, Hua Peng, Yuan Hu Zhu, Jian Liu, and Ji Chao Li. "Boundary Condition Effect on Thermoelectric Coefficients." Materials Science Forum 743-744 (January 2013): 116–19. http://dx.doi.org/10.4028/www.scientific.net/msf.743-744.116.

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nfluence of physical boundary conditions on the thermoelectric transportation coefficients has been analyzed starting form Onsager equations. Four boundary conditions have been considered: electric short, i.e, the chemical potential difference is zero; electric open, or electric current free; isothermal, i.e., no temperature difference; adiabatic, or heat flux free. Four kinds of thermoelectric equations have been derived with different boundary conditions. It was found that the influence of boundary cannot be ignored when figure-of-merit is near and larger than 1.0. This results could be useful in designing thermoelectric device with high performance thermoelectric materials.
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Schüler, Anne, Katharina Scheiter, and Florian Schmidt-Weigand. "Boundary Conditions and Constraints of the Modality Effect." Zeitschrift für Pädagogische Psychologie 25, no. 4 (2011): 211–20. http://dx.doi.org/10.1024/1010-0652/a000046.

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Abstract.The modality effect in multimedia learning suggests that pictures presented together with spoken text lead to better learning outcomes than pictures presented together with written text. Although the modality effect has been demonstrated in a number of empirical studies, there is an emerging body of evidence that speaks against its universal validity. Rather, it might occur only when specific boundary conditions are given. Therefore, the aim of the current special issue is to offer a platform to publish studies that contribute to identifying these possible boundary conditions. In the introduction to this special issue, firstly a context for the articles of the special issue is provided by describing in more detail the theoretical framework for the modality effect that can be used to derive different explanations for its occurrence. Secondly, because the studies reported in this special issue failed to observe the modality effect when according to the theoretical framework and the pre-existing empirical evidence a modality effect had to be expected, problems associated with interpreting null effects are discussed. Thirdly, the main findings of each of the contributing articles are discussed. Overall, the studies presented in this special issue indicate that the modality effect is not as ubiquitous as one might assume. Hence, the modality principle, that is the recommendation to use narrated rather than written multimedia presentations, should be considered with care.
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Dissertations / Theses on the topic "Effect of boundary Conditions"

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Osth, Adam F. "Create or differentiate? Testing the boundary conditions of differentiation." The Ohio State University, 2011. http://rave.ohiolink.edu/etdc/view?acc_num=osu1321390746.

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Park, Kyeong M. "Boundary conditions of font size effects." Thesis, The University of Alabama in Huntsville, 2016. http://pqdtopen.proquest.com/#viewpdf?dispub=10130786.

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<p> Prior research has shown that people perceive items in a larger font size as being more memorable than items in a smaller font size. This perception leads to higher judgments of learning (JOLs; i.e., confidence ratings regarding the likelihood of recalling an item) for larger font size items than smaller font size items. Yet other research has shown that people recalled more when the information was presented in a smaller font than when it was presented in a larger font size. The present study examined if there are boundary conditions of font sizes affecting JOLs and actual recall performance. As we expected, the results show that JOLs increased as a function of the size category. The results also show that font size impacted recall performance such that items in the Smallest size category were recalled at a higher rate than items in the other three font size categories.</p>
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Hilton, Kelsey. "The effect of boundary conditions and architecture on the response of cancellous bone." Master's thesis, University of Cape Town, 2018. http://hdl.handle.net/11427/29542.

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The investigation presented herein was performed to determine the effect of boundary conditions and architectural parameters on the mechanical properties of bovine cancellous bone. 124 cylindrical cancellous samples (7.5 mm height) were harvested from a total of 9 bovine humeri. Mechanical properties of these samples were determined using compression tests performed at three, quasi-static strain rates, namely: 10−3 , 10−2 and 10−1 s −1 .The specimen conditions investigated were standard specimens (with marrow, 10 mm diameter), defatted specimens (without marrow, 10 mm diameter), structurally confined specimens (with marrow and a confining collar, 10 mm diameter) and bone confined specimens (with marrow, 20 mm and 28 mm diameters). Each specimen was scanned using a µCT scanner (Phoenix, voxel size 80 µm, 70 kV, 350 µA, acquisition time of 500 ms per image). The images were used to determine the architectural parameters for each specimen, which were calculated using algorithms developed during the study. These algorithms were validated against existing software (BoneJ) which is available to calculate cancellous bone architectural parameters. The results of the compression testing showed little dependence of mechanical properties on strain rate. The results of the defatted and structurally confined specimens showed a decrease in scatter with the elimination and reduction, respectively, of flow of the marrow within the trabecular network. This suggests that although marrow does not strengthen bone at quasi-static strain rates, the flow of marrow disrupts the trabecular network. The bone confinement results showed significantly increased mechanical strength of the inner 10 mm core compared to the whole sample. Apparent modulus was found to be 58% and 60% higher in the central core of the sample for 20 mm and 28 mm samples respectively. This suggests that doubling the diameter effectively removes the edge effects, with any additional diameter increase having no effect. Inner core yield strength was 58% higher in the 20 mm samples, and roughly 96% higher in the 28 mm samples compared to full specimen yield strength. This suggested that post-yield behaviour requires a further increase in overall diameter to sufficiently remove the edge effects due to the boundary condition. University of Cape Town Department of Mechanical Engineering The results of the architectural parameters suggested a linear correlation between the mechanical properties and parameters bone volume versus total volume and trabecular number. An exponential relationship was found to exist between the mechanical properties and mean trabecular separation. No correlation was found between mechanical properties and mean trabecular thickness. It was also concluded that specimen condition affects the relationship between mechanical properties and architectural parameters. Therefore, to effectively predict the response of cancellous bone, specimen condition should be used in conjunction with at least two architectural parameters, preferably bone volume versus total volume and mean trabecular separation.
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Jiang, Mingxiao. "Scale and boundary conditions effects in fiber-reinforced composites." Diss., Georgia Institute of Technology, 2000. http://hdl.handle.net/1853/16373.

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Pham, Thanh Tung. "Multiscale modelling and simulation of slip boundary conditions at fluid-solid interfaces." Phd thesis, Université Paris-Est, 2013. http://tel.archives-ouvertes.fr/tel-00980155.

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In most applications concerning a fluid flowing over a solid surface, the no-slip velocity condition was widely used because it is simple and produces the results in agreement with experiments. However, this dynamical boundary condition is not appropriate when the flow under consideration is at a micro or nano length scale.In order to model this effect at the macroscopic scale, the Navier boundary conditions have been introduced, with the slip length as a parameter. When the fluid is a gas, this length is related to the tangential momentum accommodation coefficient (TMAC) and the mean free path, according to the Maxwell model. The aim of this work is to systematically address this model using a multi-scale approach and to extend it by incorporating both the morphology and the anisotropy of a surface. The thesis consists of five chapters. In Chapter 1, the basics of the kinetic theory of gases, the Boltzmann equation and related solutions (Navier-Stokes-Fourier, Burnett, Grad, Direct Simulation Monte Carlo ...) are briefly presented. The models of gas-wall interaction and slip models introduced in the fluid mechanics are also recalled. The chapter ends with a description of the computational method used for the molecular dynamics simulations performed in this work. Chapter 2 is dedicated to the development of a simple technique to simulate the pressure driven flows. The principle is to rely on the atomistic formulas of the stress tensor (Irving Kirkwood, Method of Plane, Virial Stress) and to modify the periodic conditions by maintaining the difference between the kinetic energy of the ingoing and outgoing particles of the simulation domain. Several types of channels are studied with this technique. The results (temperature, velocity ...) are discussed and compared. Chapter 3 deals with the study of the gas-wall interaction potential by the ab-initio method. The code CRYSTAL 09 is used to obtain the potential between an atom of argon (Ar) and a surface of platinum (Pt) <111> as a function of distance. Then the gas-wall potential is decomposed into binary potential and approached by an analytic function. This function is then implemented in a MD code to simulate the gas-wall collisions and determine the TMAC coefficient. In Chapter 4, the effect of morphology is studied. The multi-body Quantum Sutton Chen (QSC) potential is used for Pt <100> solid and the binary potential proposed in the previous chapter for the Ar-Pt couple is employed. The QSC potential is needed to reproduce the surface effects that affect the final results. Different surfaces are treated : smooth, nanostructured surface and, random surface obtained by Chemical vapor deposition (CVD). The TMAC is determined using a generalized approach, i.e. depending on the angle of incident flux of gas atoms on the surface. The surface anisotropy and the scattering kernel are also examined. In Chapter 5, we propose a model of anisotropic slip for fluids based on accommodation tensor. The model is obtained by the analytical approximate calculations developed in the framework of the kinetic theory. We thus generalize Maxwell's equation by showing that the slip length tensor is directly related to the accommodation tensor. The model is in good agreement with the MD results. Thanks to our MD simulations, we develop a suitable technique for reproducing the anisotropy of the accommodation tensor. The thesis ends with a conclusion section in which we suggest some perspectives for a continuation of this work
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Thomas, B. M. "The effect of boundary conditions on the failure of thin plates subjected to impulsive loading." Master's thesis, University of Cape Town, 1995. http://hdl.handle.net/11427/11618.

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Bibliography: leaves 64-65.<br>This report presents the results of an investigation into the effects of edge boundary conditions on the failure of thin plates subjected to impulsive loading. In previous investigations the discrepancy between experimental results and theoretical solutions and effects observed at the edges of deformed plates have brought the method of securing the plate into question. This investigation examines the effect of edge boundary conditions by comparing the results of previous experiments where the plates were secured by clamping - with experiments where the plates are built-in (integral) with their supports.
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Cervantes, Michel. "Effects of boundary conditions and unsteadiness on draft tube flow." Doctoral thesis, Luleå tekniska universitet, Strömningslära och experimentell mekanik, 2003. http://urn.kb.se/resolve?urn=urn:nbn:se:ltu:diva-16887.

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The present research focuses on flow properties of the elbow draft tube. This element has a major function in low head turbines, since up to half of the losses may arise there at part load. The use of computational fluid dynamic (CFD) to redisign a draft tube necessitates detailed knowledged of the boundary conditions. They are generally not available and qualified guesses must be made. This applies in particular to the radial velocity at the inlet. A method to estimate this component in swirling flow from experimental values of the axial and tangential velocities is derived. The method uses a two dimensional non- viscous description of the flow, the Squire-Long formulation. It is tested against swirling flow in a diffuser and applied to the Turbine-99 draft tube flow. As several other boundary conditions are difficult to estimate and many input parameters are available to perform a simulation, the use of factorial design is proposed as an alternative to design simulations in a systematic, objective and quantitative way. The method allows the deternmination of the main and joint effects of input parameters on the numerical simulation. The input parameters may be experimental uncertainty on boundary conditions, unknown boundary conditions, grid and turbulence models. The method is applied to the Turbine-99 test case, where the radial velocity, the surface roughness, the turbulence length scale and the grid were the factors investigated. The inlet radial velocity is found to have a major effect on the pressure recovery. The flow in water turbines is highly unsteady due to the runner blade rotation, guide vanes and stay vanes. Unsteady pressure measurements on a Kaplan prototype point out unsteadiness in the high and low pressure regions of the turbine. Since model and prototype are not running in dynamically similar conditions, the influence of unsteadiness on the losses is of interest. The derivation of the variation of the mechanical energy for the mean, oscillating and turbulent fields point out the contribution of unsteadiness to the losses and the turbulent production. Application to turbulent channel flow reveals that the contribution is a function of the amplitude of the oscillation, the frequency and the friction velocity. Turbulent pulsating flow in a generic model of the rectangular diffuser found at the end of elbow draft tube is studied in detail with laser Doppler anemometry (LDA). Three frequencies, corresponding to the quasi-steady, relaxation and quasi-laminar regimes with an amplitude of about 10% are investigated. The results indicate no alteration of the mean flow by the excitation of a single frequency. Furthermore. the existence of the different regimes, as found in turbulent pulsating turbulent pipe and channel flows, is confirmed.<br>Godkänd; 2003; 20061108 (haneit)
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Cervantes, Michel J. "Effects of boundary conditions and unsteadiness on draft tube flow /." Luleå, 2003. http://epubl.luth.se/1402-1544/2003/11/index.html.

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Cherman, Aleksey, Srimoyee Sen, Michael L. Wagman, and Laurence G. Yaffe. "Exponential reduction of finite volume effects with twisted boundary conditions." AMER PHYSICAL SOC, 2017. http://hdl.handle.net/10150/624042.

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Flavor-twisted boundary conditions can be used for exponential reduction of finite volume artifacts in flavor-averaged observables in lattice QCD calculations with SU (N-f) light quark flavor symmetry. Finite volume artifact reduction arises from destructive interference effects in a manner closely related to the phase averaging which leads to large N-c volume independence. With a particular choice of flavor-twisted boundary conditions, finite volume artifacts for flavor-singlet observables in a hypercubic spacetime volume are reduced to the size of finite volume artifacts in a spacetime volume with periodic boundary conditions that is four times larger.
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Gu, Lian Sheng. "Effects of boundary conditions on the propagation of quasi-detonation waves." Thesis, McGill University, 1987. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=63863.

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Books on the topic "Effect of boundary Conditions"

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Ganesh, Raman, and United States. National Aeronautics and Space Administration., eds. Initial condition effect on pressure waves in an axisymmetric jet. National Aeronautics and Space Administration, 1988.

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Lewis Research Center. Institute for Computational Mechanics in Propulsion., ed. On high-order radiation boundary conditions. National Aeronautics and Space Administration, Institute for Computational Mechanics in Propulsion, Langley Research Center, 1995.

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Lewis Research Center. Institute for Computational Mechanics in Propulsion., ed. On high-order radiation boundary conditions. National Aeronautics and Space Administration, Institute for Computational Mechanics in Propulsion, Langley Research Center, 1995.

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P, Chen C., and George C. Marshall Space Flight Center., eds. Studies on effects of boundary conditions in confined turbulent flow predictions. National Aeronautics and Space Administration, Scientific and Technical Information Branch, 1985.

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J, Clark Bruce, Groeneweg John F, and United States. National Aeronautics and Space Administration., eds. High-speed propeller noise predictions: Effects of boundary conditions used in blade loading calculations. National Aeronautics and Space Administration, 1987.

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J, Clark Bruce, Groeneweg John F, and United States. National Aeronautics and Space Administration., eds. High-speed propeller noise predictions: Effects of boundary conditions used in blade loading calculations. National Aeronautics and Space Administration, 1987.

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J, Clark Bruce, Groeneweg John F, and United States. National Aeronautics and Space Administration., eds. High-speed propeller noise predictions: Effects of boundary conditions used in blade loading calculations. National Aeronautics and Space Administration, 1987.

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Fuentes, H. R. Effects from influent boundary conditions on tracer migration and spatial variability features in intermediate-scale experiments. Division of Waste Management, Office of Nuclear Material Safety and Safeguards, U.S. Nuclear Regulatory Commission, 1987.

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Wood, William A. Aerothermodynamic calculations on X-34 at Mach 6 wind tunnel conditions. National Aeronautics and Space Administration, Langley Research Center, 1999.

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Center, Langley Research, ed. Aerothermodynamic calculations on X-34 at Mach 6 wind tunnel conditions. National Aeronautics and Space Administration, Langley Research Center, 1999.

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Book chapters on the topic "Effect of boundary Conditions"

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Bushnell, D. "Effect of boundary conditions and eccentric loading." In Computerized buckling analysis of shells. Springer Netherlands, 1989. http://dx.doi.org/10.1007/978-94-009-5063-4_4.

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Zlotnik, V., and G. Ledder. "Effect of Boundary Conditions on Dipole Flow." In Computational Methods in Water Resources X. Springer Netherlands, 1994. http://dx.doi.org/10.1007/978-94-010-9204-3_110.

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Renner, Michael J., and Mark R. Rosenzweig. "Boundary Conditions for Environmental Effects." In Recent Research in Psychology. Springer New York, 1987. http://dx.doi.org/10.1007/978-1-4612-4766-1_4.

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Sracic, Michael W., and William J. Elke. "Effect of Boundary Conditions on Finite Element Submodeling." In Nonlinear Dynamics, Volume 1. Springer International Publishing, 2018. http://dx.doi.org/10.1007/978-3-319-74280-9_16.

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Chen, Junkai, Wenxue Gao, Xiangjun Hao, Zheng Wei, Xiaojun Zhang, and Zhaochen Liu. "Multilateral Boundary Blasting Theory of High and Steep Slope in Open Pit Mine and Its Application." In Lecture Notes in Civil Engineering. Springer Singapore, 2022. http://dx.doi.org/10.1007/978-981-19-1260-3_32.

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AbstractAt present, the blasting theory of high and steep rock slope mainly focuses on flat terrain, ignoring the influence of micro-terrain boundary factors on blasting effect, which leads to excessive blasting energy and affects the stability of slope. Therefore, based on the theory of multilateral boundary rock blasting, this paper deduces the calculation formula of blasting charge for high and steep rock slope under multilateral boundary conditions, and verifies it with field test. The results show that: (1) The multilateral boundary charge calculation formula directly includes micro-topography boundary conditions and blasting effect, and the rock blasting theory is based on the interaction of blasting energy provided by explosives and potential energy in medium, which effectively improves the energy utilization rate of explosives. (2) The influence of surplus blasting energy on the surrounding environment under different boundary conditions is controlled, and the explosive explosion effect is effectively controlled, so that a stable high and steep slope of open pit mine is formed after blasting.
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Medovar, Yu A., and I. O. Yushmanov. "Boundary Conditions Effect on the Accuracy of Groundwater Head Evaluation." In Groundwater Updates. Springer Japan, 2000. http://dx.doi.org/10.1007/978-4-431-68442-8_60.

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Bhatnagar, Nayantara, Sam Greenberg, and Dana Randall. "The Effect of Boundary Conditions on Mixing Rates of Markov Chains." In Approximation, Randomization, and Combinatorial Optimization. Algorithms and Techniques. Springer Berlin Heidelberg, 2006. http://dx.doi.org/10.1007/11830924_27.

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Juárez-Aubry, Benito A., and Ricardo Weder. "Quantum Field Theory with Dynamical Boundary Conditions and the Casimir Effect." In Theoretical Physics, Wavelets, Analysis, Genomics. Springer International Publishing, 2023. http://dx.doi.org/10.1007/978-3-030-45847-8_12.

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Harpaz, Amos, Attay Kovetz, and Giora Shaviv. "The Effects of Boundary Conditions on Stellar Evolution." In Circumstellar Matter. Springer Netherlands, 1987. http://dx.doi.org/10.1007/978-94-009-3887-8_118.

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Aslam, Mohammed, Praveen Nagarajan, and Mini Remanan. "Effect of Boundary Conditions in Damage Detection of Aluminum Beams Using PZT." In Lecture Notes in Mechanical Engineering. Springer Singapore, 2019. http://dx.doi.org/10.1007/978-981-13-8767-8_65.

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Conference papers on the topic "Effect of boundary Conditions"

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Matuska, Tomas, and Viacheslav Shemelin. "Effect of Boundary Conditions on Glazed Flat-Plate Solar Collector Performance Test Results." In EuroSun 2024: 15th International Conference on Solar Energy for Buildings and Industry. International Solar Energy Society, 2024. https://doi.org/10.18086/eurosun.2024.07.12.

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Antila, Eero, Kalle Lehto, and Ossi Kaario. "Effect of Turbulence Boundary Conditions to CFD Simulation." In SAE 2011 World Congress & Exhibition. SAE International, 2011. http://dx.doi.org/10.4271/2011-01-0835.

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SAHARIAN, ARAM, and GIAMPIERO ESPOSITO. "SCALAR CASIMIR EFFECT WITH NON-LOCAL BOUNDARY CONDITIONS." In Proceedings of the MG11 Meeting on General Relativity. World Scientific Publishing Company, 2008. http://dx.doi.org/10.1142/9789812834300_0508.

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Arda, Mustafa, and Metin Aydogdu. "Nonlocal effect on boundary conditions of cantilever nanobeam." In INTERNATIONAL CONFERENCE OF NUMERICAL ANALYSIS AND APPLIED MATHEMATICS ICNAAM 2019. AIP Publishing, 2020. http://dx.doi.org/10.1063/5.0026430.

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Gerolymos, G., E. Sauret, and I. Vallet. "Effect of Boundary-Conditions in Shock-Wave/Turbulent-Boundary-Layer Interaction Computations." In 33rd AIAA Fluid Dynamics Conference and Exhibit. American Institute of Aeronautics and Astronautics, 2003. http://dx.doi.org/10.2514/6.2003-3465.

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Zuber, Jean-Bernard, and V. B. Petkova. "Boundary conditions in conformal and integrable theories." In Non-perturbative Quantum Effects 2000. Sissa Medialab, 2000. http://dx.doi.org/10.22323/1.006.0038.

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Doikou, Anastasia. "''New'' boundary conditions in integrable lattice models." In Non-perturbative Quantum Effects 2000. Sissa Medialab, 2000. http://dx.doi.org/10.22323/1.006.0054.

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Wachiraporn, Suppakorn, Auckpath Sawangsuriya, and Wilailak Sramoon. "Effect of Boundary Conditions on Dynamic Cone Penetrometer Test." In The 3rd World Congress on Civil, Structural, and Environmental Engineering. Avestia Publishing, 2018. http://dx.doi.org/10.11159/icgre18.109.

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Wadood, S. A., Justin T. Schultz, A. Nick Vamivakas, and C. R. Stroud. "Investigating the effect of remote boundary conditions on photodetection." In Conference on Coherence and Quantum Optics. OSA, 2019. http://dx.doi.org/10.1364/cqo.2019.w6a.24.

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Walker, David, and Luciano Castillo. "The effect of the initial conditions on turbulent boundary layers." In 15th AIAA Computational Fluid Dynamics Conference. American Institute of Aeronautics and Astronautics, 2001. http://dx.doi.org/10.2514/6.2001-2912.

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Reports on the topic "Effect of boundary Conditions"

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Fedotov, A. Effect of Boundary Conditions at the Walls of a Beam Pipe on Present SNS Space-Charge Simulations. Office of Scientific and Technical Information (OSTI), 2000. http://dx.doi.org/10.2172/1157255.

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Wibowo, J., B. Amadei, S. Sture, and R. H. Price. Effect of boundary conditions on the strength and deformability of replicas of natural fractures in welded tuff: Data analysis. Office of Scientific and Technical Information (OSTI), 1994. http://dx.doi.org/10.2172/145258.

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Fuentes, H. R., W. L. Polzer, and E. P. Springer. Effects from influent boundary conditions on tracer migration and spatial variability features in intermediate-scale experiments. Office of Scientific and Technical Information (OSTI), 1987. http://dx.doi.org/10.2172/59985.

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Wibowo, J., B. Amadei, S. Sture, A. B. Robertson, and R. H. Price. Effect of boundary conditions on the strength and deformability of replicas of natural fractures in welded tuff; Data report: Yucca Mountain Site Characterization Project. Office of Scientific and Technical Information (OSTI), 1993. http://dx.doi.org/10.2172/140062.

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Schiller, Brandon, Tara Hutchinson, and Kelly Cobeen. Cripple Wall Small-Component Test Program: Wet Specimens II (PEER-CEA Project). Pacific Earthquake Engineering Research Center, University of California, Berkeley, CA, 2020. http://dx.doi.org/10.55461/ldbn4070.

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This report is one of a series of reports documenting the methods and findings of a multi-year, multi-disciplinary project coordinated by the Pacific Earthquake Engineering Research Center (PEER and funded by the California Earthquake Authority (CEA). The overall project is titled “Quantifying the Performance of Retrofit of Cripple Walls and Sill Anchorage in Single-Family Wood-Frame Buildings,” henceforth referred to as the “PEER–CEA Project.” The overall objective of the PEER–CEA Project is to provide scientifically based information (e.g., testing, analysis, and resulting loss models) that measure and assess the effectiveness of seismic retrofit to reduce the risk of damage and associated losses (repair costs) of wood-frame houses with cripple wall and sill anchorage deficiencies as well as retrofitted conditions that address those deficiencies. Tasks that support and inform the loss-modeling effort are: (1) collecting and summarizing existing information and results of previous research on the performance of wood-frame houses; (2) identifying construction features to characterize alternative variants of wood-frame houses; (3) characterizing earthquake hazard and ground motions at representative sites in California; (4) developing cyclic loading protocols and conducting laboratory tests of cripple wall panels, wood-frame wall subassemblies, and sill anchorages to measure and document their response (strength and stiffness) under cyclic loading; and (5) the computer modeling, simulations, and the development of loss models as informed by a workshop with claims adjustors. This report is a product of Working Group 4 (WG4): Testing, whose central focus was to experimentally investigate the seismic performance of retrofitted and existing cripple walls. This report focuses stucco or “wet” exterior finishes. Paralleled by a large-component test program conducted at the University of California, Berkeley (UC Berkeley) [Cobeen et al. 2020], the present study involves two of multiple phases of small-component tests conducted at the University of California San Diego (UC San Diego). Details representative of era-specific construction, specifically the most vulnerable pre-1960s construction, are of predominant focus in the present effort. Parameters examined are cripple wall height, finish style, gravity load, boundary conditions, anchorage, and deterioration. This report addresses the third phase of testing, which consisted of eight specimens, as well as half of the fourth phase of testing, which consisted of six specimens where three will be discussed. Although conducted in different phases, their results are combined here to co-locate observations regarding the behavior of the second phase the wet (stucco) finished specimens. The results of first phase of wet specimen tests were presented in Schiller et al. [2020(a)]. Experiments involved imposition of combined vertical loading and quasi-static reversed cyclic lateral load onto ten cripple walls of 12 ft long and 2 or 6 ft high. One cripple wall was tested with a monotonic loading protocol. All specimens in this report were constructed with the same boundary conditions on the top and corners of the walls as well as being tested with the same vertical load. Parameters addressed in this report include: wet exterior finishes (stucco over framing, stucco over horizontal lumber sheathing, and stucco over diagonal lumber sheathing), cripple wall height, loading protocol, anchorage condition, boundary condition at the bottom of the walls, and the retrofitted condition. Details of the test specimens, testing protocol, including instrumentation; and measured as well as physical observations are summarized in this report. Companion reports present phases of the tests considering, amongst other variables, impacts of various boundary conditions, stucco (wet) and non-stucco (dry) finishes, vertical load, cripple wall height, and anchorage condition. Results from these experiments are intended to support advancement of numerical modeling tools, which ultimately will inform seismic loss models capable of quantifying the reduction of loss achieved by applying state-of-practice retrofit methods as identified in FEMA P-1100,Vulnerability-Base Seismic Assessment and Retrofit of One- and Two-Family Dwellings.
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Wibowo, J., B. Amadei, S. Sture, A. B. Robertson, and R. H. Price. Effect of boundary conditions on the strength and deformability of replicas of natural fractures in welded tuff: Comparison between predicted and observed shear behavior using a graphical method; Yucca Mountain Site Characterization Project. Office of Scientific and Technical Information (OSTI), 1993. http://dx.doi.org/10.2172/140081.

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Scudder, Jack. Final Scientific/Technical Report for "Role of Electron Kinetic Effects on the Macroscopic Structure and Evolution of Collisionless Reconnection in Simulations with Open Boundary Conditions". Office of Scientific and Technical Information (OSTI), 2011. http://dx.doi.org/10.2172/1004611.

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8

King, David. GenCade Lateral Boundary Conditions. Coastal and Hydraulics Laboratory (U.S.), 2017. http://dx.doi.org/10.21079/11681/21469.

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Fuchs, Marcel, Ishaiah Segal, Ehude Dayan, and K. Jordan. Improving Greenhouse Microclimate Control with the Help of Plant Temperature Measurements. United States Department of Agriculture, 1995. http://dx.doi.org/10.32747/1995.7604930.bard.

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A model of the energy balance of a transpiring crop in a greenhouse was developed in a format suitable for use in climate control algorithms aimed at dissipating excess heat during the warm periods. The model's parameters use external climatic variables as input. It incorporates radiation and convective transfer functions related to the operation of control devices like shading screens, vents, fans and enhanced evaporative cooling devices. The model identified the leaf boundary-layer resistance and the leaf stomatal and cuticular resistance as critical parameters regulating the temperature of the foliage. Special experiments evaluated these variables and established their relation to environmental factors. The research established that for heat load conditions in Mediterranean and arid climates transpiring crops maintained their foliage temperature within the range allowing high productivity. Results specify that a water supply ensuring minimum leaf resistance to remain below 100 s m-1, and a ventilation rate of 30 air exchanges per hour, are the conditions needed to achieve self cooling. Two vegetable crops, tomato and sweet pepper fulfilled maintained their leaf resistance within the prescribed range at maturity, i.e., during the critical warm season. The research evaluates the effects of additional cooling obtained from wet pad systems and spray wetting of foliage.
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Hale, J. K., and C. Rocha. Varying Boundary Conditions with Large Diffusivity,. Defense Technical Information Center, 1985. http://dx.doi.org/10.21236/ada158643.

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