Rozprawy doktorskie na temat „Bistable”
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Ye, Hua. "Bistable cylindrical space frames". Thesis, University of Cambridge, 2007. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.613062.
Pełny tekst źródłaMuñoz, Aaron A. "Developments toward a micro Bistable Aerial Platform : analysis of the Quadrantal Bistable Mechanism". [Tampa, Fla] : University of South Florida, 2008. http://purl.fcla.edu/usf/dc/et/SFE0002742.
Pełny tekst źródłaMuñoz, Aaron A. "Developments Toward a Micro Bistable Aerial Platform: Analysis of the Quadrantal Bistable Mechanism". Scholar Commons, 2008. https://scholarcommons.usf.edu/etd/419.
Pełny tekst źródłaVan, Dommelen Ronnie Francis. "Bistable distributed feedback laser diodes". Thesis, National Library of Canada = Bibliothèque nationale du Canada, 1999. http://www.collectionscanada.ca/obj/s4/f2/dsk1/tape8/PQDD_0020/MQ48293.pdf.
Pełny tekst źródłaHarris, Peter. "Bistable laminates for energy harvesting". Thesis, University of Bath, 2017. https://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.760884.
Pełny tekst źródłaBrinkmeyer, Alex. "Time-dependent bistable morphing structures". Thesis, University of Bristol, 2014. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.629647.
Pełny tekst źródłaCinti, Eleonora <1982>. "Bistable elliptic equations with fractional diffusion". Doctoral thesis, Alma Mater Studiorum - Università di Bologna, 2010. http://amsdottorato.unibo.it/3073/.
Pełny tekst źródłaSprague, Robert Wendell 1957. "THERMALLY EVAPORATED BISTABLE THIN FILM ETALONS". Thesis, The University of Arizona, 1987. http://hdl.handle.net/10150/276517.
Pełny tekst źródłaandrews, George A. "Spontaneous pulse formation in bistable systems". W&M ScholarWorks, 2004. https://scholarworks.wm.edu/etd/1539623432.
Pełny tekst źródłaGarcía, Rodríguez Pedro Ernesto. "Noise-induced reversals in bistable visual perception". Doctoral thesis, Universitat Pompeu Fabra, 2012. http://hdl.handle.net/10803/83867.
Pełny tekst źródłaEn este trabajo, son considerados una serie de modelos para frecuencia neuronal ampliamente aceptados en percepción bi-estable, con el objetivo de evaluar las implicaciones de los resultados recientemente reportados en Pastukhov & Braun (2011). Estos autores han cuantificado no solamente aspectos más conocidos sobre el fenómeno (media y dispersión de las distribuciones de dominancia), sino también efectos de historia que habían sido ignorados hasta el presente. Por medio de simulaciones computacionales, se demuestra rigurosamente que la dependencia de la historia del proceso perceptual encontrada por Pastukhov & Braun (2011) efectivamente restringe la región válida de parámetros que es adecuada para reproducir los datos empíricos. Concretamente, que solamente pequeñas regiones del espacio de parámetros disponible, y que se encuentran dentro de una región dinámica bi-estable caracterizada por dos atractores, son realmente adecuadas, tanto para rivalidad binocular (BR) como para estímulos de estructura por movimiento (KDE). Resulta importante destacar que los resultados permanecen válidos de un modelo a otro, independientemente de los detalles de implementación neuronal. La plausibilidad biológica de la región de parámetros encontrada para cada modelo es entonces considerada, en el contexto de las ampliamente conocidas proposiciones de Levelt. Con tal objetivo, hacemos uso de un algoritmo de suma pesada para extraer valores medios de la regiones de parámetros correspondientes a cada sujeto. Este algoritmo constituye una importante mejora a la metodología propuesta por Shpiro et al. (2007) para ajustar modelos de frecuencia neuronal a datos comportamentales de percepción bi-estable. Es entonces mostrado como cada mecanismo neuronal considerado es clara- mente diferente en su capacidad para reproducir las proposiciones de Levelt. Por ejemplo, modelos conteniendo procesos lentos de retroalimentación negativa da- dos por adaptación de frecuencia de disparo Wilson (2003); Shpiro et al. (2007), sin importar si están descritos por funciones lineales Shpiro et al. (2007) or no lineales Curtu et al. (2008)) de la actividad, consiguen reproducir de modo razonable la segunda proposición de Levelt. Por el contrario, una notable discrepancia entre modelo y resultados empíricos es encontrada cuando tales procesos están dados por la presencia de depresión sináptica de larga duración. El presente trabajo culmina con un estudio sobre la capacidad de los mencionados modelos para reproducir los efectos de resonancia que ocurren al variar la frecuencia externa de modulación Kim et al. (2006). Es de destacar que en nuestro caso, un efecto de resonancia es encontrado respecto a la dispersión del ruido, lo cual indica la presencia de una verdadera resonancia del tipo estocástico. Este efecto es claramente demostrado para estos modelos, por primera vez, en el presente trabajo. Previas estimaciones de la dispersión del ruido (20 − 30 % de la señal de entrada) y su localización (variables de adaptación) son analizadas. Se demuestra que un incremento de la sensibilidad a incluso muy pequeñas señales de menos del 10% puede ser encontrada en estos modelos, con sólo incluir la variable de ruido como parte de la corriente neta que alimenta la neurona.
Au, Ping Tong. "Mechanically stabilized bistable FLCD on flexible substrates /". View abstract or full-text, 2006. http://library.ust.hk/cgi/db/thesis.pl?ECED%202006%20AU.
Pełny tekst źródłaAnderson, Jeffrey K. "Piezoresistive Sensing of Bistable Micro Mechansim State". Diss., CLICK HERE for online access, 2005. http://contentdm.lib.byu.edu/ETD/image/etd1074.pdf.
Pełny tekst źródłaSyvertsson, Simon. "Bistable differentiation in an isogenic cell population". Thesis, University of Newcastle upon Tyne, 2015. http://hdl.handle.net/10443/3002.
Pełny tekst źródłaYuan, Guohui. "Switching characteristics of bistable semiconductor ring lasers". Thesis, University of Bristol, 2008. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.492549.
Pełny tekst źródłaBetts, David. "Modelling and optimisation of bistable composite laminates". Thesis, University of Bath, 2012. https://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.549838.
Pełny tekst źródłaZhang, Boshu. "Bistable and multi-stable thin-walled structures". Thesis, University of Oxford, 2017. https://ora.ox.ac.uk/objects/uuid:05e0e48f-2da6-4d53-914a-cc1b46b9e87d.
Pełny tekst źródłaKim, Sukkeun. "Stochastic chaos and resonance in bistable systems /". Digital version accessible at:, 1999. http://wwwlib.umi.com/cr/utexas/main.
Pełny tekst źródłaKnott, Geoffrey. "New forms of bistable composite slit tube". Thesis, University of Surrey, 2018. http://epubs.surrey.ac.uk/848818/.
Pełny tekst źródłaMasters, Nathan D. "A Self-Retracting Fully-Compliant Bistable Micromechanism". BYU ScholarsArchive, 2003. https://scholarsarchive.byu.edu/etd/86.
Pełny tekst źródłaGomm, Troy Alan. "Development of In-Plane Compliant Bistable Microrelays". BYU ScholarsArchive, 2003. https://scholarsarchive.byu.edu/etd/81.
Pełny tekst źródłaMairesse, Benjamin. "Robustness of Bistable Switches in Gene Regulatory Networks". Thesis, KTH, Reglerteknik, 2007. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-106248.
Pełny tekst źródłaAlqasimi, Ahmad. "Design Of Shape Morphing Structures Using Bistable Elements". Scholar Commons, 2015. http://scholarcommons.usf.edu/etd/5897.
Pełny tekst źródłaLi, Bei. "All-optical functions using bistable semiconductor ring lasers". Thesis, University of Bristol, 2009. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.508062.
Pełny tekst źródłaNeilson, Matthew. "Flow effects in bistable nematic liquid crystal devices". Thesis, University of Strathclyde, 2008. http://oleg.lib.strath.ac.uk:80/R/?func=dbin-jump-full&object_id=21943.
Pełny tekst źródłaGalbraith, Ian. "Diffractive and diffusive phenomena in optically bistable devices". Thesis, Heriot-Watt University, 1985. http://hdl.handle.net/10399/1614.
Pełny tekst źródłaMullings, Jason Andrew. "Spatio-temporal behaviour of optically bistable InSb etalons". Thesis, Heriot-Watt University, 1995. http://hdl.handle.net/10399/1337.
Pełny tekst źródłaIurasov, Volodymyr. "Contrôle passif en vibroacoustique avec absorbeur dynamique bistable". Thesis, Aix-Marseille, 2018. http://www.theses.fr/2018AIXM0034.
Pełny tekst źródłaThe work presented in this thesis is dedicated to the study of a continuous bistable absorber based on the principle of Nonlinear Energy Sink (NES) and its use for the vibration mitigation of a many-degree-offreedom mechanical systems under acoustic excitation. The analytical model of the linear behavior of the absorber and its complete numerical model were presented, analyzed and validated by series of experiments. The complexity of the Targeted Energy Transfer (TET) between the absorber and the primary system did not allow a simple analytical description. We have chosen to concentrate this study on the experimental and numerical exploration of the absorber coupled to mechanical systems under harmonic and random excitations, as well as on the identification of the mechanisms of energy transfer. The coupled system have shown very rich dynamics as it possessed different regimes of TET, which were earlier described in literature for other types of NES. This project was funded by Saint-Gobain. The absorber was adapted for the application foreseen by the industrial supervisors of the PhD: the vibration control of partitioning double walls under acoustic excitation so that to improve the acoustic isolation provided by the system. The qualitative knowledge on the absorber dynamics obtained from the experimental and numerical results, as well as the analogy with the other types of NES, permitted the creation of an absorber which corresponds to the problematic. The ways for the further optimization and development of the absorber were identified and preliminary simulations were provided
Giddings, Peter F. "Piezoelectrically actuated bistable composite laminates for structural morphing". Thesis, University of Bath, 2010. https://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.538161.
Pełny tekst źródłaEkström, Lars Johan. "Welding of bistable fibre-reinforced thermoplastic composite pipelines". Thesis, University of Cambridge, 2005. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.614933.
Pełny tekst źródłaKaplan, David Louis. "Characterizing chaos in a hybrid optically bistable device". Diss., The University of Arizona, 1988. http://hdl.handle.net/10150/184440.
Pełny tekst źródłaPirrera, Alberto. "Bistable structures for morphing applications using anisotropic shells". Thesis, University of Bristol, 2011. http://hdl.handle.net/1983/2ca5dda6-993e-45c0-8378-40a10aa489a0.
Pełny tekst źródłaVolte, Alix. "Photo-induced cooperativity in bistable volume-changing materials". Thesis, Rennes 1, 2020. http://www.theses.fr/2020REN1S037.
Pełny tekst źródłaThe field of ultrafast structural dynamics is based on remarkable developments of available pulse sources, from THz to x-rays. Currently, pump-probe techniques operate on the femtosecond time scales, i.e. faster than atomic motions. Typically, a laser pump pulse drives a system onto an electronically excited state, while the structural dynamics temporal evolution is tracked with a delayed probe pulse. Moreover, laser light sources can generate intense pulses with a number of photons approaching the number of potentially photo-excited species. Such pulses can induce highly excited states, involving a macroscopic number of atoms or molecules and driving the system far from equilibrium. These precursor effects may be followed by the establishment of a new electronic and structural order and thus may bring about a phase transition of the excited system. This represents a new approach to direct materials functionalities: timely acting on an atomic or molecular excited state, rather than switching from an equilibrium state to another by tuning a static control parameter. Moreover, such induced atomic displacements may occur in a collective coherent motion, in a fundamentally different way from incoherent thermal excitation.The goal of this PhD was to explore through ultrafast x-ray diffraction some aspects of the coupled strain-transformation dynamics, in the frame of phase transitions induced by a laser pulse in volume-changing materials. This project stands between the field of photo-induced phase transitions, the physics of photo-acoustics and non-linear wave phenomena, as well as the study of the elastic field effects in correlated electrons materials. We expect this photo-induced elastic cooperative process to be particularly efficient in bistable materials showing significant volume change at the transition, as those investigated here. It is the case of spin crossover materials, where cooperativity is governed by long-range elastic field arising from the swelling of molecules between the two spin states. Other promising candidate materials to explore the universality of photo-induced elastic cooperativity are Mott insulators exhibiting resistive switching, and metal oxide nano-crystals with a bistable regime at room temperature
Axelrod, Kevin Connor. "Bistable dynamics in microbial ecology and systems biology". Thesis, Harvard University, 2016. http://nrs.harvard.edu/urn-3:HUL.InstRepos:33493470.
Pełny tekst źródłaBiophysics
Cherry, Brian B. "Characterizing the Three-Dimensional Behavior of Bistable Micromechanisms". Diss., CLICK HERE for online access, 2008. http://contentdm.lib.byu.edu/ETD/image/etd2274.pdf.
Pełny tekst źródłaTawfik, Samer Anwar. "Stability and morphing characteristics of bistable composite laminates". Diss., Atlanta, Ga. : Georgia Institute of Technology, 2008. http://hdl.handle.net/1853/24702.
Pełny tekst źródłaCommittee Chair: Erian Armanios; Committee Member: D. Stefan Dancila; Committee Member: Juan R. Cruz; Committee Member: Massimo Ruzzene; Committee Member: Rami Haj-Ali
Manrique, Juarez Maria Dolores. "Micro and nanoactuators based on bistable molecular materials". Thesis, Toulouse 3, 2017. http://www.theses.fr/2017TOU30244/document.
Pełny tekst źródłaMicroelectromechanical systems (MEMS) are micrometric devices able to transform a mechanical signal into an electrical one and vice-versa. In the past years they have been successfully employed in different fields of our everyday life for sensing, transducing different forms of energy and for actuating purposes thanks to their low energy dissipation, fast response and high sensibility. Even if recent technological progress has allowed a considerable miniaturization of these devices, several challenges remain. In particular the integration of smart actuating materials at the nanometric scale remains arduous because in most cases they lose their actuating properties at reduced sizes. In this context, this thesis work aimed for exploring the possibility of using molecular spin crossover materials for the development of electromechanical actuators. To this aim we have conceived silicon microcantilevers, which have been coated by various spin crossover molecules using either thermal evaporation or spray-coating methods. The MEMS have been characterized at variable temperature and pressure both in dynamical and static modes using a single experimental setup. The results prove that spin crossover molecules can be successfully integrated into silicon MEMS devices using different fabrication processes and their actuation can be achieved using either a thermal energy source or light irradiation. In parallel, this work has allowed us to extract relevant mechanical properties of spin crossover materials (Young's modulus, Poisson's ratio), which have been largely unknown previously
Hanna, Brandon Holbrook. "Modeling and Testing of Bistable Waterbomb Base Configurations". BYU ScholarsArchive, 2014. https://scholarsarchive.byu.edu/etd/4336.
Pełny tekst źródłaBaker, Michael S. "On-Chip Actuation of Compliant Bistable Micro-Mechanisms". BYU ScholarsArchive, 2003. https://scholarsarchive.byu.edu/etd/52.
Pełny tekst źródłaJasaitis, Valdas. "Computer modeling of self-ordered fronts under oscillating zero-mean forces". Doctoral thesis, Lithuanian Academic Libraries Network (LABT), 2012. http://vddb.laba.lt/obj/LT-eLABa-0001:E.02~2012~D_20120302_090624-00150.
Pełny tekst źródłaSavaime susidarančių lokalizuotų struktūrų valdymas deterministiškai (reguliariai) arba stochastiškai (atsitiktinai) osciliuojančiais laukais, kurių vidutinė vertė yra nulis, yra plačiai paplitęs įvairiose terpėse. Disertacijoje nagrinėjami savame susidarantys bistabilūs frontai disipatyviose sistemose, kurios aprašomos netiesinėmis parabolinėmis diferencialinėmis lygtimis su dalinėmis išvestinėmis. Disertacijos tikslas yra ištirti kryptingo bistabilių frontų dreifo valdymo nuliniais laukais galimybes, taikant kompiuterinį modeliavimą bei analitinius metodu. Tikslui pasiekti buvo sudaryti matematinis bei skaitinis modeliai, sukurta programinė įranga ir skaitiškai ištirtos savaiminių bistabilių frontų valdymo galimybės, naudojant periodinius, kvaziperiodinius ir stochastinius nulinius laukus.
Jasaitis, Valdas. "Savaiminių frontų osciliuojančiuose nuliniuose laukuose kompiuterinis modeliavimas". Doctoral thesis, Lithuanian Academic Libraries Network (LABT), 2012. http://vddb.laba.lt/obj/LT-eLABa-0001:E.02~2012~D_20120302_090834-15056.
Pełny tekst źródłaSpatio-temporal control of the self-ordered structures by use of the time-dependent oscillatory fields of zero-time average, either deterministic (temporally regular) or noisy (temporally irregular) ones, has today become a fundamental field of multidisciplinary research in a wide variety of the highly nonlinear systems of the different physical origin. The self-ordered bistable fronts in the essentially dissipative systems of the reaction-diffusion type, that are formulated by parabolic partial differential equations, are investigated in the dissertation. The objective of the research is to investigate new possibilities of controlling the directed net motion of the self-ordered bistable fronts by the deterministic and stochastic zero-mean ac forces using computer modeling and analytic tools. In order to achieve the objective mathematical and numerical models were applied, computer software was created and new possibilities of controlling the directed net motion of bistable fronts by use of the zero-average periodic, quasi-periodic and bounded noise fields were investigated.
Johansen, Sigurd Hagen. "Modelling and Analysis of a Synthetic Bistable Genetic Switch". Thesis, Norges teknisk-naturvitenskapelige universitet, Institutt for bioteknologi, 2011. http://urn.kb.se/resolve?urn=urn:nbn:no:ntnu:diva-12652.
Pełny tekst źródłaChoueifati, Joseph Georges. "Design and modeling of a bistable spherical compliant micromechanism". [Tampa, Fla.] : University of South Florida, 2007. http://purl.fcla.edu/usf/dc/et/SFE0002290.
Pełny tekst źródłaCreyts, Don Stafford IV. "Design and fabrication of a MEMS magnetic bistable valve". Thesis, Georgia Institute of Technology, 2001. http://hdl.handle.net/1853/17950.
Pełny tekst źródłaSmith, Chester. "Modeling and Parameter Study of Bistable Spherical Compliant Mechanisms". Scholar Commons, 2011. http://scholarcommons.usf.edu/etd/3356.
Pełny tekst źródłaRichardson, Harvey John. "Theoretical studies of cross talk between InSb bistable elements". Thesis, Heriot-Watt University, 1989. http://hdl.handle.net/10399/942.
Pełny tekst źródłaQiu, Jin 1974. "An electrothermally-actuated bistable MEMS relay for power applications". Thesis, Massachusetts Institute of Technology, 2003. http://hdl.handle.net/1721.1/8002.
Pełny tekst źródłaIncludes bibliographical references (p. 91-92).
This thesis first develops a bistable mechanism that does not rely on internal stress or hinges for its bistability, which is then combined with transient electrothermal actuation and contact structure to develop a MEMS relay for power switching. The relay components, fabricated by a through etch of a silicon wafer using deep reactive ion etch (DRIE), move laterally in the plane of the wafer. The synthesis, analysis, design, fabrication and testing of the relay are all described in this thesis. The bistable mechanism comprises two parallel cosine curved clamped-clamped beams that are also clamped together at their centers. If designed properly it exhibits a second stable deflected shape that is nearly a mirror image of its as-fabricated shape mirrored through the centerline connecting its clamped ends. Both theoretical and finite-element analyses are applied to the modeling, design and optimization of the force-displacement characteristic of the curved beam mechanism. The analyses results agree well with experimental measurement after accounting for fabrication variations. If fabricated properly, the mechanism is mechanically robust; some mechanisms have been switched between their bistable states one million times without sign of failure. The bistable mechanism is combined with two contacts to form a crossbar relay. The contact structure is designed with flat shape and additional compliance; and proper metalization process is developed for its DRIE etched sidewalls; both contributing to a more reliable and low resistance contact. Because of bistability this relay requires no actuation power in either its on or off states. Therefore, transient electrothermal actuators to switch its states are designed, partially with a mechanical model developed for cantilevers subjected to both lateral and axial forces.
(cont.) These actuators typically require 1-ms 50-V pulses to switch the relay. In the off state, the relay contacts stand off more than 200 V. In the on state the best relay contacts exhibit a total resistance of 60 mfQ and a current carrying capacity of 3 A. The relay can switch at a maximum 5 Hz rate. These characteristics make it a good candidate for power protection applications.
by Jin Qiu.
Ph.D.
Choi, Jang Wook Heath James R. "Bistable [2]rotaxane based molecular electronics : fundamentals and applications /". Diss., Pasadena, Calif. : California Institute of Technology, 2007. http://resolver.caltech.edu/CaltechETD:etd-05242007-194737.
Pełny tekst źródłaYeung, Fion Sze Yan. "Bistable twisted nematic liquid crystal display using photoalignment technology /". View abstract or full-text, 2004. http://library.ust.hk/cgi/db/thesis.pl?ELEC%202004%20YEUNG.
Pełny tekst źródłaVigreux, Caroline. "Résonance Magnétique Electronique Bistable dans les solides : recherche de nouveaux matériaux et premiers pas vers la réalisation d'ensembles de systèmes bistables couplés". Paris 6, 1999. http://www.theses.fr/1999PA066521.
Pełny tekst źródłaJensen, Brian D. "Identification of Macro- and Micro-Compliant Mechanism Configurations Resulting in Bistable Behavior". BYU ScholarsArchive, 2003. https://scholarsarchive.byu.edu/etd/83.
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