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Academic literature on the topic 'Parameter Interactions'

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Published: 4 June 2021
Last updated: 1 February 2022

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Journal articles on the topic "Parameter Interactions"

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Sadeghi, J., M. Khurshudyan, M. Hakobyan, and H. Farahani. "Hubble Parameter Corrected Interactions in Cosmology." Advances in High Energy Physics 2014 (2014): 1–16. http://dx.doi.org/10.1155/2014/129085.

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We make steps in a new direction by considering fluids with EoS of more general formF(ρ,P)=0. It is thought that there should be interaction between cosmic fluids, but this assumption for this stage carries only phenomenological character opening a room for different kinds of manipulations. In this paper we will consider a modification of an interactionQ, where we accept that interaction parameterb1(order of unity) inQ=3Hb1ρis time dependent and presented as a linear function of Hubble parameterHof the formb0+btH, wherebandb0are constants. We consider two different models including modified Chaplygin gas and polytropic gas which have bulk viscosity. Then, we investigate problem numerically and analyze behavior of different cosmological parameters concerning fluids and behavior of the universe.
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Memišević, Vesna, Anders Wallqvist, and Jaques Reifman. "Reconstituting protein interaction networks using parameter-dependent domain-domain interactions." BMC Bioinformatics 14, no. 1 (2013): 154. http://dx.doi.org/10.1186/1471-2105-14-154.

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Liu, Chengbu, Haiquan Hu, and Xiaohua Yang. "A practicable parameter describing magnetic interactions." Chemical Physics Letters 349, no. 1-2 (November 2001): 89–94. http://dx.doi.org/10.1016/s0009-2614(01)01199-x.

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Eichenhüller, Bernd, Ulf Engel, and Manfred Geiger. "Microforming and investigation of parameter interactions." Production Engineering 4, no. 2-3 (March 2, 2010): 135–40. http://dx.doi.org/10.1007/s11740-010-0214-9.

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Thakur, Rahul Kumar, Bhupendra Nath Tiwari, and Rahul Nigam. "Parameter space stability of multiple soft interactions." Nuclear Physics A 1002 (October 2020): 121978. http://dx.doi.org/10.1016/j.nuclphysa.2020.121978.

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Beven, K. J., and S. W. Franks. "Functional similarity in landscape scale SVAT modelling." Hydrology and Earth System Sciences 3, no. 1 (March 31, 1999): 85–93. http://dx.doi.org/10.5194/hess-3-85-1999.

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Abstract. In this study, it is shown that the complexity of Soil Vegetation Atmosphere Transfer (SVAT) models leads to an equifinality of functional behaviour - many parameterizations from many areas of the parameter space lead to very similar responses. Individual parameters derived by calibration (i.e. model inversion) against limited measurements are, therefore, highly uncertain. Due to the non-linear internal behaviour of SVAT models, aggregation of uncertainly known parameter fields to parameterize landscape scale variability in surface fluxes will yield highly uncertain predictions. A disaggregation approach suggested by Beven (1995) requires that the land surface be represented by a linear sum of a number of representative parameterizations or functional types. This study explores the nature of the parameter space in terms of a simple definition of functional behaviour. Parameter interactions producing similar predicted behaviours are investigated through application of Principal Component Analyses. These reveal the lack of a dominant global interaction indicating the presence of highly complex parameter interactions throughout the feasible parameter space.
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Dritschel, David G. "A general theory for two-dimensional vortex interactions." Journal of Fluid Mechanics 293 (June 25, 1995): 269–303. http://dx.doi.org/10.1017/s0022112095001716.

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A general theory for two-dimensional vortex interactions is developed from the observation that, under slowly changing external influences, an individual vortex evolves through a series of equilibrium states until such a state proves unstable. Once an unstable equilibrium state is reached, a relatively fast unsteady evolution ensues, typically involving another nearby vortex. During this fast unsteady evolution, a fraction of the original coherent circulation is lost to filamentary debris, and, remarkably, the flow reorganizes into a set of quasi-steady stable vortices.The simplifying feature of the proposed theory is its use of adiabatic steadiness and marginal stability to determine the shapes and separation distance of vortices on the brink of an inelastic interaction. As a result, the parameter space for the inelastic interaction of nearby vortices is greatly reduced. In the case of two vortex patches, which is the focus of the present work, inelastic interactions depend only on a single parameter: the area ratio of the two vortices (taking the vorticity magnitude inside each to be equal). Without invoking adiabatic steadiness and marginal stability, one would have to contend with the additional parameters of vortex separation and shape, and the latter is actually an infinitude of parameters.
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Douglas, Jack F., Robin Curtis, Prasad S. Sarangapani, Steven D. Hudson, Ronald L. Jones, and Jai A. Pathak. "Hard Spheres with Purely Repulsive Interactions Have Positive Diffusion Interaction Parameter, k D." Biophysical Journal 113, no. 3 (August 2017): 753–54. http://dx.doi.org/10.1016/j.bpj.2017.03.043.

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White, Mary Anne. "1996 Noranda Award Lecture Thermal properties of solids: Étude in three-part anharmony." Canadian Journal of Chemistry 74, no. 11 (November 1, 1996): 1916–21. http://dx.doi.org/10.1139/v96-216.

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The harmonic oscillator is a useful starting point for understanding many intermolecular interactions, and it successfully predicts many properties. However, anharmonic terms in the interaction potential are responsible for several observed phenomena. This review summarizes our recent experimental investigations of three thermal properties of molecular solids that result from anharmonic intermolecular interactions, viz. thermal expansion, Grüneisen parameters, and thermal conductivity. Key words: anharmonicity, thermal expansion, Grüneisen parameter, thermal conductivity.
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HASLEHURST, L., and N. N. EKERE. "PARAMETER INTERACTIONS IN STENCIL PRINTING OF SOLDER PASTE." Journal of Electronics Manufacturing 06, no. 04 (December 1996): 307–16. http://dx.doi.org/10.1142/s0960313196000251.

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Dissertations / Theses on the topic "Parameter Interactions"

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Gamsizkan, Halil. "A Qcd Analysis Of High Energy Neutrino-nucleon Interactions." Master's thesis, METU, 2003. http://etd.lib.metu.edu.tr/upload/1006428/index.pdf.

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In this thesis, a leading-order QCD analysis of structure functions in neutrinonucleon interactions is performed. From the CCFR nucleon structure function data, the QCD parameter Lambda has been extracted. This measurement also corresponds to a measurement of the strong coupling constant. Two fits to the data have been performed, the nonsinglet-only fit and the singlet-nonsinglet combined fit. The result for Lambda was found to be 289 +62 ¡
59 §
76 MeV, where the errors are statistical and systematical, respectively. This result is compared to the world-wide measurements of this quantity. In order to verify the agreement, also the logarithmic slopes of the QCD model and the structure function data are calculated and compared.
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Iorio, Antony William, and iantony@gmail com. "Rotationally Invariant Techniques for Handling Parameter Interactions in Evolutionary Multi-Objective Optimization." RMIT University. Computer Science and Information Technology, 2008. http://adt.lib.rmit.edu.au/adt/public/adt-VIT20081203.100151.

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In traditional optimization approaches the interaction of parameters associated with a problem is not a significant issue, but in the domain of Evolutionary Multi-Objective Optimization (EMOO) traditional genetic algorithm approaches have difficulties in optimizing problems with parameter interactions. Parameter interactions can be introduced when the search space is rotated. Genetic algorithms are referred to as being not rotationally invariant because their behavior changes depending on the orientation of the search space. Many empirical studies in single and multi-objective evolutionary optimization are done with respect to test problems which do not have parameter interactions. Such studies provide a favorably biased indication of genetic algorithm performance. This motivates the first aspect of our work; the improvement of the testing of EMOO algorithms with respect to the aforementioned difficulties that genetic algorithms experience in the presence of para meter interactions. To this end, we examine how EMOO algorithms can be assessed when problems are subject to an arbitrarily uniform degree of parameter interactions. We establish a theoretical basis for parameter interactions and how they can be measured. Furthermore, we ask the question of what difficulties a multi-objective genetic algorithm experiences on optimization problems exhibiting parameter interactions. We also ask how these difficulties can be overcome in order to efficiently find the Pareto-optimal front on such problems. Existing multi-objective test problems in the literature typically introduce parameter interactions by altering the fitness landscape, which is undesirable. We propose a new suite of test problems that exhibit parameter interactions through a rotation of the decision space, without altering the fitness landscape. In addition, we compare the performance of a number of recombination operators on these test problems. The second aspect of this work is concerned with developing an efficient multi-objective optimization algorithm which works well on problems with parameter interactions. We investigate how an evolutionary algorithm can be made more efficient on multi-objective problems with parameter interactions by developing four novel rotationally invariant differential evolution approaches. We also ask whether the proposed approaches are competitive in comparison with a state-of-the-art EMOO algorithm. We propose several differential evolution approaches incorporating directional information from the multi-objective search space in order to accelerate and direct the search. Experimental results indicate that dramatic improvements in efficiency can be achieved by directing the search towards points which are more dominant and more diverse. We also address the important issue of diversity loss in rotationally invariant vector-wise differential evolution. Being able to generate diverse solutions is critically important in order to avoid stagnation. In order to address this issue, one of the directed approaches that we examine incorporates a novel sampling scheme around better individuals in the search space. This variant is able to perform exceptionally well on the test problems with much less computational cost and scales to very high decision space dimensions even in the presence of parameter interactions.
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Mistry, Zubin, Venkata Harish Babu Manne, Andrea Vacca, Etienne Dautry, and Martin Petzold. "A numerical model for the evaluation of gerotor torque considering multiple contact points and fluid-structure interactions." Technische Universität Dresden, 2020. https://tud.qucosa.de/id/qucosa%3A71111.

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This paper presents a numerical model for the evaluation of the actual torque in Gerotor units. The model consists of two major modules: the pre-processor module and the HYGESim module. The preprocessor module consists of the geometric and the mechanical module. The geometric pre-processor module considers the CAD geometry of Gerotor with tolerances as input and it provides as output the geometric features needed to evaluate the rotor loading and the flow features. The mechanical preprocessor module evaluates the forces of interaction at the contact points between the rotors. The flow displaced by the unit is evaluated using a lumped parameter model whereas the lubricating gaps are evaluated by solving the Reynolds Equation. The main novel aspects consist of the evaluation of the frictional losses at various interfaces. An Elasto-Hydrodynamic Lubrication (EHL) approach is used to evaluate the frictional losses at the contact points between the rotors. Tests on a prototype Gerotor unit are performed for the model validation, particularly as pertains to the features of the shaft torque. Additionally, the paper comments on the distribution of the different torque loss contributions associated with the operation of the unit taken as reference.
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Kolhatkar, Tanmay. "Nonlinear dynamic interactions between a rigid attachment bolted to a thin-walled sheet metal structure." The Ohio State University, 2020. http://rave.ohiolink.edu/etdc/view?acc_num=osu1587124580918153.

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Richter, Annerose. "Der Einfluss von Haltungsbedingungen auf Parameter der Tiergesundheit unter besonderer Berücksichtigung von Atemwegserkrankungen in fünf Schweinemastbetrieben im Raum Thüringen." Doctoral thesis, Universitätsbibliothek Leipzig, 2015. http://nbn-resolving.de/urn:nbn:de:bsz:15-qucosa-171103.

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Hintergrund und Zielstellung: Im Zuge der Intensivierung der Schweinemast kommen Atemwegsinfektionen und deren klinische Auswirkungen auf die Tiere, in Verbindung mit möglichen Wechselwirkungen zu den Umgebungsfaktoren, eine entscheidende Bedeutung für die Tiergesundheit und Wirtschaftlichkeit der Betriebe zu. Daher war es Ziel dieser Arbeit, unter Feldbedingungen festzustellen, inwieweit Korrelationen zwischen Parametern des Stallklimas, dem Nachweis potentiell pathogener Infektionserreger des Respirationstraktes, klinischem Befund der Tiere, dem Lungenbefund am Schlachtband und den Leistungsfaktoren bestehen. Material und Methoden: Über den Zeitraum von einem Jahr wurden fünf Schweinemastbetriebe in Thüringen, mit Betriebsgrößen im Bereich von 2480 bis 22 000 Mastplätzen hinsichtlich Tiergesundheit, insbesondere der Atemwegsgesundheit und Stallklima untersucht. Betriebskenndaten über Stallbau, Belegungsdichte, Lüftungs- und Heiztechnik sowie Fütterungs, -Tränke- und Impfregime wurden aufgenommen. Für die Untersuchungen wurden pro Betrieb zwei Abteile ausgewählt. Dabei lagen die betriebsabhängigen Abteilgrößen zwischen 159 bis 751 Tieren. In diesen Abteilen wurden bei einer Stichprobengröße von zehn Tieren in zwei Mastperioden, Sommer und Winter, zu jeweils drei Zeitpunkten (Vormast, Mittelmast und Endmast) 840 Blutproben entnommen und bezüglich der lungenpathogenen Erreger PRRSV, PCV 2, SIV sowie APP untersucht. PRRSV und PCV 2 betreffend, wurde sowohl auf Virus mittels in house-PCR-Untersuchungen gepoolter Proben, als auch serologisch auf Antikörper mittels ELISA untersucht. Für den Erreger SIV erfolgte eine serologische Untersuchung auf Antikörper mittels HAH sowie für APP mittels ELISA. Des Weiteren kam es in den entsprechenden Abteilen zur Durchführung stallklimatischer Messungen, wobei die Stallklimaparameter Lufttemperatur, Relative Luftfeuchte, Luftgeschwindigkeit sowie die Beleuchtungsstärke mithilfe von Geräten der Firma Testo sowie die Konzentrationen von CO2, O2, NH3und H2S mithilfe eines Multiwarn-Mehrgasmessgeräts der Firma Dräger ermittelt wurden. Gleichzeitig erfolgte eine klinische Befunderhebung in den Gruppen, mit der Bildung eines Klinikscores mit Schwerpunkt Lungengesundheit, sowie die Aufnahme der Leistungsparameter: durchschnittliche tägliche Zunahme, Mortalität der Gruppe und dem Tierbehandlungsindex, aus denen ein Leistungsscore ermittelt wurde. Im Zuge der Schlachtung wurden 9921 Schlachtkörper, insbesondere das Geschlinge und die Lungen, makroskopisch beurteilt und daraus ein modifizierter Organboniturscore, auf Grundlage des Organbefundindex nach Blaha gebildet. Alle Score-Bewertungen erfolgten nach Punkten und gaben somit eine Aussage zum Tiergesundheitsstatus der Betriebe. Höhere Punktzahlen entsprachen einem schlechterem Gesundheits- bzw. Leistungsstatus. Somit konnten Wechselwirkungen zwischen den Ergebnissen der Blutuntersuchungen, den Stallklimaparametern, dem Klinik- und Leistungsscore sowie dem Organboniturscore mittels statistischer Auswertung hergestellt werden, wobei die einzelnen Bestände sowohl betriebsübergreifend als auch auf Bestandsebene untersucht wurden. Aufgrund durchgeführter Umbaumaßnahmen in drei Beständen wurde ein Vergleich alter und neuer Betriebsteile in die Betrachtungen mit einbezogen. Ergebnisse: Keiner der Betriebe wies eine vollständige Erregerfreiheit auf, was für die endemische Verbreitung der Infektionserreger, insbesondere PRRSV, PCV 2 sowie APP spricht. SIV wurde lediglich in einem Bestand nachgewiesen. Serokonversionen hinsichtlich PRRSV gingen signifikant mit vermehrtem Husten der Tiere (p = 0,027) und einer höheren klinischen Gesamtpunktzahl (p = 0,016) einher. Bei Virusnachweis zeigte sich mit p = 0,047 eine signifikant schlechtere Lungengesundheit. Hinsichtlich des Stallklimas bestand für die Parameter Temperatur, Relative Luftfeuchte, CO2 Gehalt sowie den Schadgasgehalten der Stallluft ein starker Bezug zu den unterschiedlichen Mastperioden Sommer und Winter, mit vorrangig schlechteren Werten in der Winterperiode. Diese Klimaparameter lagen oftmals über den Grenz- bzw. Regelwertbereichen, mit Auswirkungen auf die Atemwegsgesundheit. Mit Ausnahme des Parameters NH3 ergaben sich bestandsübergreifend mit p ≤ 0,01 signifikante Zusammenhänge zu den klinischen Befunden (höhere Teilpunkzahlen Lungengesundheit korrelieren mit ρ = 0,250 zum CO2-sowie mit ρ = 0,222 zum H2S-Gehalt der Stallluft, negativ mit ρ = −0,396 zur Temperatur) sowie NH3 inbegriffen (mit einer Korrelation von ρ = 0,401) zu den Pneumoniebefunden. Ebenfalls bestandsübergreifend zeigte sich ein signifikanter Zusammenhang zwischen der Infektion von APP (p = 0,038) sowie PRRSV (p = 0,001) und einer erhöhten Anzahl an Pleuritiden. Des Weiteren zeigten sich mit einer Signifikanz von p ≤ 0,01 in Verbindung mit verstärkten klinischen Symptomen auch signifikant mehr makroskopisch sichtbare Pneumonien bei der Schlachtung (Korrelation der Gesamtpunktzahl Klinik mit ρ = 0,297). Bestandsabhängig wurden beim Vorhandensein multipler Erregerspektren im Betrieb erhöhte Lungenbefunde ermittelt. Beziehungen der Klima- und Klinikparameter sowie der Lungenbefunde zu den Leistungsparametern, konnten nur in geringem Maße festgestellt werden. So wurden beispielsweise keine Korrelationen zwischen den Schadgasparametern und der durchschnittlichen Masttagszunahme festgestellt. Hier scheint der genetische Aspekt einen starken Einfluss zu besitzen. Schlussfolgerungen: Anhand der Untersuchungen konnten sowohl einzelbetrieblich als auch betriebsübergreifend Signifikanzen zwischen den einzelnen Parametern festgestellt werden. Die gegenseitige Beeinflussung und Abhängigkeit aller Faktoren ist jedoch immer herdenabhängig und variiert, je nach Bestandsdynamik.
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Staśto, Anna. "QCD analysis of deep inelastic lepton-hadron scattering in the region of small values of the Bjorken parameter x." Thesis, Durham University, 1999. http://etheses.dur.ac.uk/4515/.

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We present the new framework based on BFKL and DGLAP evolution equations in which the leading in(Q(_2)) and in(l/x) terms are treated on equal footing. We introduce a pair of coupled integro-difFerential equations for the quark singlet and the unintegrated gluon distribution. The observable structure functions are calculated using high energy factorisation approach. We also include the sub-leading in (l/x) effects via consistency constraint. We argue that the use of this constraint leads to more stable solution to the Pomeron intercept than that based on the NLO calculation of the BFKL equation alone and generates resummation to all orders of the major part of the subleading in (l/x) effects. The global fit to all available deep inelastic data is performed using a simple parametrisation of the non-perturbative region. We also present the results for the longitudinal structure function and the charm component of the F(_2) structure function. Next; we extend this approach to the low Q(^2) domain. At small distances we use the perturbative approach based on the unified BFKL/DGLAP equations and for large distances we use Vector Meson Dominance Model and, for the higher mass qq states, the additive quark approach. We show the results for the total cross section and for the ratio of the longitudinal and transverse structure functions. Finally, we calculate the dijet production and consider the decorrelation effects in the azimuthal distributions caused by the diffusion in the transverse momentum k(_r) of the exchanged gluon. Using the gluon distribution which is fixed by the fit to the DIS data we are able to make absolute predictions. We show the results for the dF(_r)/dɸ, the total cross section and also the distributions in Q(^2) as well as in the longitudinal momentum fraction of the gluon. Our theoretical predictions are confronted with the measurements made using ZEUS detector at HERA.
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Lapp, Alain. "Synthese, conformation et interactions de molecules lineaires et ramifiees de polydimethylsiloxane : mise en evidence de lois d'universalite." Université Louis Pasteur (Strasbourg) (1971-2008), 1987. http://www.theses.fr/1987STR13108.

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Synthese du polydimethylsiloxane etudie et etude de l'hydrosilation se produisant au cours de la reticulation en solution semidiluee, relation entre la longueur de correlation et la concentration. Interactions a trois corps dans le styrene, solvant theta du pdmsi
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Caniparoli, Jean-Philippe. "Etude par resonance magnetique nucleaire des conformations et des interactions moleculaires dans les mesophases lyotropes : application a des problemes de solubilisation." Paris 6, 1988. http://www.theses.fr/1988PA066117.

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Etude par rmn, de l'ordre et de la dynamique moleculaire des phases lyotropes de systemes binaires agent de surface a double chaine/eau: parametres d'ordre eleves, probabilites conformationelles, temps de correlation des mouvements moleculaires tres anisotropes en fonction de la tete polaire (phosphate ou ammonium); faible influence de la longueur de la chaine. Etude de l'ordre et de la dynamique de petites molecules en solution dans le systeme dibutylphosphate de sodium/eau en phase lamellaire: influence importante du caractere hydrophile ou hydrophobe du solute. Localisation des solutes non complexants dans le cristal liquide d'apres la relaxation induite par un ion paramagnetique
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Meesala, Vamsi Chandra. "Nonlinear Effects in Contactless Ultrasound Energy Transfer Systems." Diss., Virginia Tech, 2021. http://hdl.handle.net/10919/101752.

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Ultrasound acoustic energy transfer (UAET) is an emerging contactless technology that offers the capability to safely and efficiently power sensors and devices while eliminating the need to replace batteries, which is of interest in many applications. It has been proposed to recharge and communicate with implanted medical devices, thereby eliminating the need for invasive and expensive surgery and also to charge sensors inside enclosed metal containers typically found in automobiles, nuclear power plants, space stations, and aircraft engines. In UAET, energy is transferred through the reception of acoustic waves by a piezoelectric receiver that converts the energy of acoustic waves to electrical voltage. It has been shown that UAET outperforms the conventional CET technologies that use electromagnetic waves to transfer energy, including inductive coupling and capacitative coupling. To date, the majority of research on UAET systems has been limited to modeling and proof-of-concept experiments, mostly in the linear regime, i.e., under small levels of acoustic pressure that result in small amplitude longitudinal vibrations and linearized piezoelectricity. Moreover, existing models are based on the "piston-like" deformation assumption of the transmitter and receiver, which is only accurate for thin disks and does not accurately account for radiation effects. The linear models neglect nonlinear effects associated with the nonlinear acoustic wave propagation as well as the receiver's electroelastic nonlinearities on the energy transfer characteristics, which become significant at high source strengths. In this dissertation, we present experimentally-validated analytical and numerical multiphysics modeling approaches aimed at filling a knowledge gap in terms of considering resonant acoustic-piezoelectric structure interactions and nonlinear effects associated with high excitation levels in UAET systems. In particular, we develop a reduced-order model that can accurately account for the radiation effects and validate it by performing experiments on four piezoelectric disks with different aspect ratios. Next, we study the role of individual sources of nonlinearity on the output power characteristics. First, we consider the effects of electroelastic nonlinearities. We show that these nonlinearities can shift the optimum load resistance when the acoustic medium is fluid. Next, we consider the nonlinear wave propagation and note that the shock formation is associated with the dissipation of energy, and as such, shock formation distance is an essential design parameter for high-intensity UAET systems. We then present an analytical approach capable of predicting the shock formation distance and validate it by comparing its prediction with finite element simulations and experimental results published in the literature. Finally, we experimentally investigate the effects of both the nonlinearity sources on the output power characteristics of the UAET system by considering a high intensity focused ultrasound source and a piezoelectric disk receiver. We determine that the system's efficiency decreases, and the maximum voltage output position drifts towards the source as the source strength is increased.
Doctor of Philosophy
Advancements in electronics that underpinned the development of low power sensors and devices have transformed many fields. For instance, it has led to the innovation of implanted medical devices (IMDs) such as pacemakers and neurostimulators that perform life-saving functions. They also find applications in condition monitoring and wireless sensing in nuclear power plants, space stations, automobiles and aircraft engines, where the sensors are enclosed within sealed metal containers, vacuum/pressure vessels or located in a position isolated from the operator by metal walls. In all these applications, it is desired to communicate with and recharge the sensors wirelessly. Such a mechanism can eliminate the need for invasive and expensive surgeries to replace batteries of IMDs and preserve the structural integrity of metal containers by eliminating the need for feed through wires. It has been shown that ultrasound acoustic energy transfer (UAET) outperforms conventional wireless power transfer techniques. However, existing models are based on several assumptions that limit their potential and do not account for effects that become dominant when a higher output power is desired. In this dissertation, we present experimentally validated numerical and theoretical investigations to fill those knowledge gaps. We also provide crucial design recommendations based on our findings for the efficient implementation of UAET technology.
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Arvidsson, Therese. "Train–Bridge Interaction : Literature Review and Parameter Screening." Licentiate thesis, KTH, Bro- och stålbyggnad, 2014. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-144843.

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New railway lines are continuously being constructed and existing lines are upgraded. Hence, there is a need for research directed towards efficient design of the supporting structures. Increasingly advanced calculation methods can be motivated, especially in projects where huge savings can be obtained from verifying that existing structures can safely support increased axle loads and higher speeds. This thesis treats the dynamic response of bridges under freight and passenger train loads. The main focus is the idealisation of the train load and its implications for the evaluation of the vertical bridge deck acceleration. To ensure the running safety of train traffic at high speeds the European design codes set a limit on the vertical bridge deck acceleration. By considering the train–bridge interaction, that is, to model the train as rigid bodies on suspension units instead of constant moving forces, a reduction in bridge response can be obtained. The amount of reduction in bridge deck acceleration is typically between 5 and 20% for bridges with a span up to 30 m. The reduction can be higher for certain train–bridge systems and can be important also for bridge spans over 30 m. This thesis aims at clarifying for which system parameter combinations the effect of train–bridge interaction is important. To this end, a thorough literature survey has been performed on studies in train–track–bridge dynamics. The governing parameters in 2D train–bridge systems have been further studied through a parameter screening procedure. The two-level factorial methodology was applied to study the effect of parameter variations as well as the joint effect from simultaneous changes in several parameters. The effect of the choice of load model was thus set in relation to the effect of other parameter variations. The results show that resonance can arise from freight train traffic within realistic speed ranges (< 150 km/h). At these resonance peaks, the reduction in bridge response from a train–bridge interaction model can be considerable. From the screening of key parameters it can furthermore be concluded that the amount of reduction obtained with a train–bridge interaction model depends on several system parameters, both for freight and passenger train loads. In line with the European design code’s guidelines for dynamic assessment of bridges under passenger trains an additional amount of damping can be introduced as a simplified way of taking into account the reduction from train–bridge interaction. The amount of additional damping is today given as function of solely the bridge span length, which is a rough simplification. The work presented in this thesis supports the need for a refined definition of the additional damping.
Nya järnvägslinjer byggs kontinuerligt och befintliga linjer uppgraderas. Det finns därför ett behov av forskning inriktad på effektiv design av de bärande konstruktionerna. Alltmer avancerade beräkningsmetoder kan vara motiverade, särskilt i projekt där stora besparingar kan erhållas från att verifiera att befintliga konstruktioner kan bära ökade axellaster och högre hastigheter. Föreliggande avhandling behandlar broars dynamiska respons under belastning av gods- och passagerartåg. Huvudfokus är att studera modelleringsalternativ för tåglasten och vilka konsekvenser de har för utvärderingen av brobanans vertikala acceleration. För att garantera trafiksäkerhet vid höga tåghastigheter definierar de europeiska normerna en maximalt tillåten vertikal acceleration i brobanan. Genom att beakta tåg-bro-interaktion, där tågkomponenterna modelleras som avfjädrade stela kroppar istället för konstanta punktlaster, kan en minskning av brons respons erhållas. Reduktionen av brobanans acceleration är typiskt mellan 5 och 20% för broar med en spännvidd på upp till 30 m. Minskningen kan vara högre för vissa tåg-brosystem och kan vara viktigt också för spännvidder över 30 m. Denna avhandling syftar till att klargöra för vilka kombinationer av tåg-broparametrar effekten av tåg-bro-interaktion är viktig. I detta syfte har en omfattande litteraturstudie genomförts inom området tåg-spår-brodynamik. De styrande parametrarna i 2D tåg-brosystem har studerats vidare i en parameterstudie. Två-nivå faktorförsök har tillämpats för att studera effekten av parametervariationer samt den ytterligare effekten av samtidiga förändringar i flera parametrar. Effekten av valet av lastmodell sattes därmed i relation till effekten av andra parametervariationer. Resultaten visar att resonans kan uppstå från godstrafik inom ett realistiskt hastighetsintervall (< 150 km/h). Vid dessa resonanstoppar kan en betydande minskning av broresponsen erhållas med en tåg-bro-interaktionsmodell. Från studien av nyckelparametrar kan man vidare dra slutsatsen att reduktionen som erhålls med en tåg-bro-interaktionsmodell beror på flera systemparametrar, både för gods- och passargerartåg. Enligt de europeiska normernas rekommendationer för dynamisk kontroll av broar för passagerartrafik kan en ökad brodämpning introduceras som ett förenklat sätt att ta hänsyn till minskningen från tåg-bro-interaktion. Mängden tilläggsdämpning anges idag som en funktion av enbart brons spännvidd, vilket är en grov förenkling. Det arbete som presenteras i denna avhandling visar på behovet av en förbättrad definition av tilläggsdämpningen.

QC 20140429

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Books on the topic "Parameter Interactions"

1

Tripathi, Ratikanta. Universal parameterization of absorption cross sections. Hampton, Va: National Aeronautics and Space Administration, Langley Research Center, 1997.

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Tripathi, Ratikanta. Universal parameterization of absorption cross sections: Light systems. Hampton, Va: National Aeronautics and Space Administration, Langley Research Center, 1999.

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CRC handbook of polymer-liquid interaction parameters and solubility parameters. Boca Raton: CRC Press, 1990.

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Fedorov, K. N. Klimaticheski znachashchie fizicheskie parametry okeana. Leningrad: Gidrometeoizdat, 1986.

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Pavlov, Sergey. Methods of catastrophe theory in the phenomenology of phase transitions. ru: INFRA-M Academic Publishing LLC., 2020. http://dx.doi.org/10.12737/1004276.

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The monograph is devoted to describing the methods of catastrophe theory and building on the basis of these methods, phenomenological models of phase transitions in solids. Methods of constructing structurally stable normal forms of functions, including functions that are imposed on the symmetry conditions. The classification of phenomenological models of phase transitions for two interacting one-component order parameter, two-component and three-component order parameters the number of control parameters varied in the experiment. Theoretical dependence of the anomalies of the physical properties of the models are compared with experimental data in ferroelectrics, magnetic materials, solid solutions of rare earth metals, multiferroics and other solids that are experiencing phase transitions. For professionals in the field of solid state physics and phase transitions.
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Phoenix, Robert Michael. Characterisation of multiple metal ion-ligand interactions of biological significance using diffusion parameters. Wolverhampton: University of Wolverhampton, 1997.

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Stark, Timothy D. Hyperbolic stress-strain parameters for structured/cemented silts. [Vicksburg, Miss: U.S. Army Engineer Waterways Experiment Station, 1996.

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Wymann, Adrian. Die Selbstdarstellung in narrativen Interviews als Parameter von Kommunikationskulturen. [Bern]: Universität Bern, Institut für Sprachwissenschaft, 1990.

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Martin, Loren John. Systematic manipulation of complex magnetic field parameters and pharmacological interactions to produce analgesia in wistar rats. Sudbury, Ont: Laurentian University, School of Graduate Studies, 2004.

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Perrin, C. J. interactions between chemical parameters and periphytic algae in streams at the Endako Mine, British Columbia: Draft report. Vancouver, B.C: Limnotek Research and Development, 1993.

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Book chapters on the topic "Parameter Interactions"

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Thoroddsen, S. T. "Drop Impacts on Liquid Layers: Some New Phenomena at the Edges of Parameter Space." In Drop-Surface Interactions, 307–10. Vienna: Springer Vienna, 2002. http://dx.doi.org/10.1007/978-3-7091-2594-6_16.

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Burkard, H. "Measurement of the ξ-Parameter in μ-Decay." In Fundamental Interactions in Low-Energy Systems, 35–42. Boston, MA: Springer US, 1985. http://dx.doi.org/10.1007/978-1-4684-4967-9_3.

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Robbins, Peter A. "Design and Analysis of Experiments for Studying Hypoxic-Hypercapnic Interactions in Respiratory Control." In Modeling and Parameter Estimation in Respiratory Control, 83–89. Boston, MA: Springer US, 1989. http://dx.doi.org/10.1007/978-1-4613-0621-4_9.

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Hermann, Thomas, Stella Paschalidou, Dirk Beckmann, and Helge Ritter. "Gestural Interactions for Multi-parameter Audio Control and Audification." In Lecture Notes in Computer Science, 335–38. Berlin, Heidelberg: Springer Berlin Heidelberg, 2006. http://dx.doi.org/10.1007/11678816_37.

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Qiu, Yue, Qian Gong, and Xiaodong Gong. "Study on Optimal Parameter Setting of Word Size and Word Spacing in Chinese Text of Desktop-Computer Touch Screen." In Design, User Experience, and Usability: Designing Interactions, 297–312. Cham: Springer International Publishing, 2018. http://dx.doi.org/10.1007/978-3-319-91803-7_22.

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Rummel, Ward D., Brent K. Christner, and Donald L. Long. "Assessment of Eddy Current Probe Interactions with Defect Geometry and Operating Parameter Variations." In Review of Progress in Quantitative Nondestructive Evaluation, 705–12. Boston, MA: Springer US, 1987. http://dx.doi.org/10.1007/978-1-4613-1893-4_79.

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Gan, Thian Yew, and Getu Fana Biftu. "Effects of model complexity and structure, parameter interactions and data on watershed modeling." In Water Science and Application, 317–29. Washington, D. C.: American Geophysical Union, 2003. http://dx.doi.org/10.1029/ws006p0317.

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Gooch, Jan W. "Interaction Parameter." In Encyclopedic Dictionary of Polymers, 392. New York, NY: Springer New York, 2011. http://dx.doi.org/10.1007/978-1-4419-6247-8_6374.

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Tadros, Tharwat. "Interaction Parameter." In Encyclopedia of Colloid and Interface Science, 634. Berlin, Heidelberg: Springer Berlin Heidelberg, 2013. http://dx.doi.org/10.1007/978-3-642-20665-8_107.

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Mukherjee, Sanchita, Manas Mondal, and Dhananjay Bhattacharyya. "Variation of Stacking Interactions Along with Twist Parameter in DNA and RNA: DFT-D Studies." In Advanced Computing and Communication Technologies, 3–15. Singapore: Springer Singapore, 2016. http://dx.doi.org/10.1007/978-981-10-1023-1_1.

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Conference papers on the topic "Parameter Interactions"

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Zhang, Yaogong, Jun Xu, Yanyan Lan, Jiafeng Guo, Maoqiang Xie, Yalou Huang, and Xueqi Cheng. "Modeling Parameter Interactions in Ranking SVM." In CIKM'15: 24th ACM International Conference on Information and Knowledge Management. New York, NY, USA: ACM, 2015. http://dx.doi.org/10.1145/2806416.2806595.

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AbdusSalam, Shehu S., Pyungwon Ko, and Deog Ki Hong. "A Full 24-Parameter MSSM Exploration." In SUPERSYMMETRY AND THE UNIFICATION OF FUNDAMENTAL INTERACTIONS. AIP, 2008. http://dx.doi.org/10.1063/1.3051939.

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Velasco-Sevilla, L., Pyungwon Ko, and Deog Ki Hong. "Supersymmetric parameter space of family symmetries." In SUPERSYMMETRY AND THE UNIFICATION OF FUNDAMENTAL INTERACTIONS. AIP, 2008. http://dx.doi.org/10.1063/1.3051961.

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Metcalf, Chelsea A., Farhaan Fowze, Tuba Yavuz, and Jose Fortes. "Extracting configuration parameter interactions using static analysis." In 2016 IEEE 24th International Conference on Program Comprehension (ICPC). IEEE, 2016. http://dx.doi.org/10.1109/icpc.2016.7503728.

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Ceclan, Andrei, Constantin Barbulescu, Dan D. Micu, and Levente Czumbil. "Magnetic Field Synthesis and Parameter Regularization by Fuzzy Inference." In 2008 Conference on Human System Interactions. IEEE, 2008. http://dx.doi.org/10.1109/hsi.2008.4581470.

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Mahmoudi, Farvah, Pyungwon Ko, and Deog Ki Hong. "Flavor Data Constraints on the SUSY Parameter Space." In SUPERSYMMETRY AND THE UNIFICATION OF FUNDAMENTAL INTERACTIONS. AIP, 2008. http://dx.doi.org/10.1063/1.3051922.

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Zhang, Zhiqiang, and Jian Zhang. "Characterizing failure-causing parameter interactions by adaptive testing." In the 2011 International Symposium. New York, New York, USA: ACM Press, 2011. http://dx.doi.org/10.1145/2001420.2001460.

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Kazakov, Dmitri. "Galactic Dark Matter & SUSY Parameter Space." In SUSY06: THE 14TH INTERNATIONAL CONFERENCE ON SUPERSYMMETRY AND THE UNIFICATION OF FUNDAMENTAL INTERACTIONS. AIP, 2007. http://dx.doi.org/10.1063/1.2735259.

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Khanam, Tahmina, Kaushik Deb, and Kang-Hyun Jo. "Baggage detection and classification using human body parameter & boosting technique." In 2017 10th International Conference on Human System Interactions (HSI). IEEE, 2017. http://dx.doi.org/10.1109/hsi.2017.8004996.

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Ganian, Robert, Tomáš Peitl, Friedrich Slivovsky, and Stefan Szeider. "Fixed-Parameter Tractability of Dependency QBF with Structural Parameters." In 17th International Conference on Principles of Knowledge Representation and Reasoning {KR-2020}. California: International Joint Conferences on Artificial Intelligence Organization, 2020. http://dx.doi.org/10.24963/kr.2020/40.

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We study dependency quantified Boolean formulas (DQBF), an extension of QBF in which dependencies of existential variables are listed explicitly rather than being implicit in the order of quantifiers. DQBF evaluation is a canonical NEXPTIME-complete problem, a complexity class containing many prominent problems that arise in Knowledge Representation and Reasoning. One approach for solving such hard problems is to identify and exploit structural properties captured by numerical parameters such that bounding these parameters gives rise to an efficient algorithm. This idea is captured by the notion of fixed-parameter tractability (FPT). We initiate the study of DQBF through the lens of fixed-parameter tractability and show that the evaluation problem becomes FPT under two natural parameterizations: the treewidth of the primal graph of the DQBF instance combined with a restriction on the interactions between the dependency sets, and also the treedepth of the primal graph augmented by edges representing dependency sets.
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Reports on the topic "Parameter Interactions"

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O'Brien, William J., Jeffrey Seibert, Brian Vogel, and Patricia W. Young. On Achieving Network LPI (Link Parameter Interactions) for Spread Spectrum Communications. Fort Belvoir, VA: Defense Technical Information Center, October 1985. http://dx.doi.org/10.21236/ada163985.

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Koetke, D. D., R. W. Manweiler, and T. D. Shirvel Stanislaus. High sensitivity tests of the standard model for electroweak interactions. [Lepton-family-number-violating decay; Michel [rho] parameter]. Office of Scientific and Technical Information (OSTI), January 1993. http://dx.doi.org/10.2172/6832260.

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Bloomsburg, G., J. Finnie, D. Horn, B. King, and J. Liou. Abstracts and parameter index database for reports pertaining to the unsaturated zone and surface water-ground water interactions at the Idaho National Engineering Laboratory. Office of Scientific and Technical Information (OSTI), May 1993. http://dx.doi.org/10.2172/10103992.

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McFarquhar, Greg. Determining Best Estimates and Uncertainties in Cloud Microphysical Parameters from ARM Field Data: Implications for Models, Retrieval Schemes and Aerosol-Cloud-Radiation Interactions. Office of Scientific and Technical Information (OSTI), December 2015. http://dx.doi.org/10.2172/1233352.

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Oh, Youngman. Role of IGFBP-3/IGFBP-3 Receptor Interaction in Normal and Malignant Mammary Growth: A Potential Diagnostic Parameter and New Strategy for Endocrine Therapy. Fort Belvoir, VA: Defense Technical Information Center, September 2000. http://dx.doi.org/10.21236/ada392333.

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Amzeri, Achmad, B. S. DARYONO, and M. SYAFII. GENOTYPE BY ENVIRONMENT AND STABILITY ANALYSES OF DRYLAND MAIZE HYBRIDS. SABRAO Journal of Breeding and Genetics, September 2020. http://dx.doi.org/10.21107/amzeri.2020.2.

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The phenotypic analysis of new candidate varieties at multiple locations could provide information on the stability of their genotypes. We evaluated the stability of 11 maize hybrid candidates in five districts in East Java Province, Indonesia. Maize hybrids with high yield potential and early maturity traits derived from a diallel cross were planted in a randomized complete block design with two checks (Srikandi Kuning and BISI-2) as a single factor with four replicates. The observed traits were grain yield per hectare and harvest age. The effects of environment, genotype, and genotype × environment interaction on yield were highly significant (P < 0.01). KTM-1, KTM-2, KTM-4, KTM-5, and KTM-6 showed higher average grain yield per hectare than the checks (Srikandi Kuning = 8.49 ton ha−1 and BISI-2 = 7.32 ton ha−1) at five different locations. The average harvest age of 11 candidates was less than 100 days. KTM-4 and KTM-5 had production yields that were higher than the average yield of all genotypes in all environments (Yi > 7.78 tons ha−1) and were considered stable on the basis of three stability parameters, i.e., Finlay–Wilkinson, Eberhart–Russell, and additive main effect multiplicative interaction (AMMI). KTM-2 had the highest yield among all tested genotypes (9.33 ton ha−1) and was considered as stable on the basis of AMMI but not on the basis of Finlay–Wilkinson and Eberhart–Russell. KTM-1 performed well only in Pamekasan, whereas KTM-6 performed well only in Sampang. Thus, these two genotypes could be targeted for these specific locations.
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