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Dissertations / Theses on the topic 'Synergetika'
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Balúch, Pavel. "Synergetika a samoorganizace v ekonomice." Master's thesis, Vysoké učení technické v Brně. Ústav soudního inženýrství, 2012. http://www.nusl.cz/ntk/nusl-232672.
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The master thesis focuses at analysis and research of synergy and self-organization in economics. The motivation for the thesis was joining Czech Republic and other nine countries to the European Union on May 1st, 2004. The primary aim was to analyse the problem and on a model example,assuming "ceteris paribus", confirm or refute the thought, that joining the European Union has positive synergic effect for newcomers. The second meaning of synergy is solved as a sub-problem in the master thesis, where the use of synergy in logistics was analysed and opportunities improving the current situation were suggested.
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Zuijderhoudt, Rob. "Op zoek naar synergie omgaan met onoplosbare problemen /." [S.l.] : Amsterdam : Rob Zuijderhoudt ; Universiteit van Amsterdam [Host], 2007. http://dare.uva.nl/document/48833.
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Neumann-Cosel, Alexa von. "Change-Management systemtheoretisch betrachtet : ein synergetisches Handlungsmodell /." Hamburg : Kovač, 2006. http://www.verlagdrkovac.de/3-8300-2476-2.htm.
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Oitzl, Paul. "Modell für die kurzfristige Aktienkursprognose mit Hilfe der Kapitalmarktsynergetik." Hamburg Diplomica-Verl, 2002. http://d-nb.info/988007851/04.
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Stöttner, Max Thomas. "Entwicklung eines synergetischen Modells zur Abbildung von investitionsbedingten Kapazitätsveränderungen eines Bergwerks /." Clausthal-Zellerfeld : GDMB-Medienverl, 2005. http://bvbr.bib-bvb.de:8991/F?func=service&doc_library=BVB01&doc_number=014565428&line_number=0001&func_code=DB_RECORDS&service_type=MEDIA.
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Güßmann, Martin. "Selbstorganisation zwischen Mannigfaltigkeiten euklidischer und nichteuklidischer Geometrie durch Kooperation und Kompetition." [S.l. : s.n.], 2006. http://nbn-resolving.de/urn:nbn:de:bsz:93-opus-27928.
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Nicholson, John C. "Numerical optimization of synergetic maneuvers." Thesis, Monterey, Calif. : Springfield, Va. : Naval Postgraduate School ; Available from National Technical Information Service, 1994. http://handle.dtic.mil/100.2/ADA283398.
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Spriesterbach, Thomas P. "Performance analysis of non-coplanar synergetic maneuvers." Thesis, Monterey, California. Naval Postgraduate School, 1991. http://hdl.handle.net/10945/26690.
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Wang, Ziwei. "Synergetic Junction of Interregional Transit in Shanghai 2030." University of Cincinnati / OhioLINK, 2016. http://rave.ohiolink.edu/etdc/view?acc_num=ucin1460653793.
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Dündar, Ali Erkarslan Önder. "A critical approach on "synergetic geometry" of Buckminster fuller/." [s.l.]: [s.n.], 2005. http://library.iyte.edu.tr/tezler/master/endustriurunleritasarimi/T000431.pdf.
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Thesis (Master)--İzmir Institute of Technology,İzmir, 2005Keywords: Synergetic geometry, complementarity, tensegrity, system and synergy, dymaxion, geodesic. Includes bibliographical references (leaves. 77).
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Castiblanco, Quiroga Gladys Julieth. "On the synergetic interactions between termite soldiers and workers." Universidade Federal de Viçosa, 2016. http://www.locus.ufv.br/handle/123456789/11858.
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Uma resposta comum de animais sociais à pressão de predação é alocar alguns indivíduos para a função de defesa. Em cupins, a evolução da casta de soldados, parece ter ocorrido como uma resposta extrema a predação, uma vez que são morfofisiologicamente adaptados à defesa, estéreis e incapazes de se alimentarem sozinhos. No entanto, Vários estudos têm mostrado a participação ativa da casta de soldados em tarefas de exploração do espaço como forrageio. Ditas observações são relevantes pois a alta contribuição dos operários em defesa sugere que os soldados tem um grau de redundância nas colônias de cupins. Tal redundância parece ocorrer em Cornitermes cumulans, no qual os operários são mais participativos que os soldados na defesa do ninho. Aqui nós hipotetizamos que uma forma de diminuir o custo da casta de soldados é que eles sejam capazes de fazer mais do que só defender. Especificamente, prevemos que tal contribuição deve ser otimizar estratégias de busca. No experimento de caminhamento com C. cumulans encontramos que a velocidade média de deslocamento dos operários cresce não-linearmente com a presença de sol- dados. Esse resultado e a presença de padrões de movimento altamente coerentes com vôo de Lévy sugerem que os soldados reforçam a capacidade exploratória dos operários em C. cumulans. A eficiência na exploração do espaço na presença de soldados pode estar contribuindo na entrada de recursos na colônia e na diminuição da mortalidade. Assim, nossos resultados mostram uma vantagem intrínseca de ter soldados na colônia, o que pode diminuir o custo dos soldados nas colônias de cupins.
A common response to predation pressure in social animals has been to allocate some individuals to defence tasks. In termites, the evolution of soldier caste was the most extreme anti-predatory response, because they are highly specialized in defence, sterile and incapable of perform self-maintenance. However, many studies have shown the active role of soldiers in tasks of space exploration like foraging. Such observations are important because the high contribution of workers in defence suggest some redundancy rate of soldier caste in termite colonies. The redundancy seems occurs in Cornitermes cumulans, where the workers being more responsive to threats than soldiers. Here we hypothesized that one way to diminish the cost of soldiers is that they are capable to do more than only defence. Specifically, we anticipate that soldiers are capable to optimize the search strategy of the workers. In the walking experiment with C. cumulans we find that the mean speed of the workers increases nonlinear with the number of soldiers. This result and the pre- sence of patterns highly coherent with Lévy flight motion suggests that the soldiers strengthen the exploratory capacity of workers in C. cumulans. In doing so, soldiers are expected to provide significant contributions to the intake of resources and to decreasing mortality in the colony. Then, our results propose an intrinsic advantage of have soldiers in the colony, and this may diminish the cost of soldiers in termite colonies.
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Rad, Roland. "Bakterielle Virulenzfaktoren und genetische Faktoren des Menschen bei der Entstehung von schweren histologischen Veränderungen der Magenmukosa während der Helicobacter-pylori-Infektion." [S.l.] : [s.n.], 2004. http://deposit.ddb.de/cgi-bin/dokserv?idn=973068167.
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Gehrau, Volker, Katrin Döveling, Denise Sommer, and Sally Dunlop. "Antagonistic and Synergetic Impacts of Conversation on Nonpersuasive Media Effects." Sage, 2014. https://tud.qucosa.de/id/qucosa%3A35474.
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This article elaborates the role of interpersonal communication in media effects. Based on an extensive literature review, two lines of arguments are illustrated: the antagonistic and the synergetic position. The literature provides theoretical and empirical support for both positions especially in the field of persuasive media input. To complete the view, two experiments with nonpersuasive media input are presented. The first experiment addresses the role of conversations in cognitive news effects. The synergetic position is supported: conversation leads to elaboration and more profound recall of media content. The second experiment deals mainly with emotional media effects in entertainment. No general impact of conversation on media effects was demonstrated. Nonetheless, the authors find evidence that conversations about the media engender a more critical and reserved stance toward the media content and protagonists. The article concludes with a discussion of the implications for further research into the field.
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Lu, Ming. "Synergetic Attenuation of Stray Magnetic Field in Inductive Power Transfer." Diss., Virginia Tech, 2017. http://hdl.handle.net/10919/78621.
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Significant stray magnetic field exists around the coils when charging the electric vehicles (EVs) with inductive power transfer (IPT), owning to the large air gap between the transmitter and receiver. The methods for field attenuation usually introduce extra losses and reduce the efficiency. This study focuses on the synergetic attenuation of stray magnetic field which is optimized simultaneously with the efficiency. The optimization is realized with Pareto front.
In this dissertation, three methods are discussed for the field attenuation. The first method is to tune the physical parameters of the winding, such as the inner radii, outer radii, distribution of the turns, and types of the litz wires. The second method is to add metal shields around the IPT coils, in which litz wires are used as shields to reduce the shielding losses. The third method is to control the phases of winding currents, which avoids increasing the size and weight of the IPT coils.
To attenuate the stray magnetic field by tuning the physical parameters, the conventional method is to sweep all the physical parameters in finite-element simulation. This takes thousands of simulations to derive the Pareto front, and it's especially time-consuming for three-dimensional simulations. This dissertation demonstrates a faster method to derive the Pareto front. The windings are replaced by the lumped loops. As long as the number of turns for each loop is known, the efficiency and magnetic field are calculated directly from the permeance matrices and current-to-field matrices. The sweep of physical parameters in finite-element simulation is replaced by the sweep of the turns numbers for the lumped loops in calculation. Only tens of simulations are required in the entire procedure, which are used to derive the matrices. An exemplary set of coils was built and tested. The efficiency from the matrix calculation is the same as the experimental measurement. The difference for stray magnetic field is less than 12.5%.
Metal shields attenuate the stray magnetic field effectively, but generates significant losses owning to the uneven distribution of shield currents. This dissertation uses litz wires to replace the conventional plate shield or ring shield. Skin effect is eliminated so the shield currents are uniformly distributed and the losses are reduced. The litz shields are categorized to two types: shorted litz shield and driven litz shield. Circuit models are derived to analyze their behaviors. The concept of lumped-loop model is applied to derive the Pareto front of efficiency versus stray magnetic field for the coils with litz shield. In an exemplary IPT system, coils without metal shield and with metal shields are optimized for the same efficiency. Both the simulation and experimental measurement verify that the shorted litz shield has the best performance. The stray magnetic field is attenuated by 65% compared to the coils without shield.
This dissertation also introduces the method to attenuate the stray magnetic field by controlling the phases of winding currents. The magnetic field around the coils is decomposed to the component in the axial direction and the component in the radial direction. The axial component decreases with smaller phase difference between windings' currents, while the radial component exhibits the opposite property. Because the axial component is dominant around the IPT coils, decreasing the phase difference is preferred. The dual-side-controlled converter is applied for the circuit realization. Bridges with active switches are used for both the inverter on the transmitter side and the rectifier on the receiver side. The effectiveness of this method was verified both in simulation and experiment. Compared to the conventional series-series IPT with 90° phase difference between winding currents, stray magnetic field was attenuated by up to 30% and 40% when the phase differences of winding currents are 50° and 40°, respectively.
Furthermore, an analytical method is investigated to calculate the proximity-effect resistance of the planar coils with ferrite plate. The objective of this method is to work together with the fast optimization which uses the lumped-loop model. The existence of the ferrite plate complicates the calculation of the magnetic field across each turn which is critical to derive the proximity-effect resistance. In this dissertation, the ferrite plate is replaced by the mirrored turns according to the method of image. The magnetic fields are then obtained from Ampere's Law and Biot-Savart Law. Up to 200 kHz, the difference of the proximity-effect resistance is less than 15% between calculation and measurement.Ph. D.
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Rémillard, Jasmine. "Cloud climatology and microphysics at Eureka using synergetic radar/lidar measurements." Thesis, McGill University, 2009. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=32392.
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Despite their importance in Earth's radiation budget and atmospheric models, Arctic clouds remain poorly documented and understood. The deployment of a cloud radar and a high spectral resolution lidar at Eureka (80°N) in August 2005 offers a unique data set for the study of Arctic clouds. In this project, synergetic retrievals were developed and applied to two years of data in order to provide a first climatology of the clouds and their microphysics at this remote location. Results show an annual cycle in cloud coverage. They are mostly detected in the low levels or in single-layer, especially in winter due to a temperature inversion and cloud top radiative cooling. An analysis of the winds also demonstrated that different wind directions relate to different cloudiness conditions, while a strong channelling from the topography is present in the low levels. Moreover, liquid phase particles were detected all year round, with a minimum occurrence in winter due to colder temperatures. Turbulence and high relative humidity seem to maintain supercooled liquid, especially when ice crystals were also present. Precipitation was mostly identified during summer months, often in the form of virga, although falling snow might have been missed due to the difficulty to distinguish it from glaciated clouds. Finally, results show that satellite validation is possible using Eureka's data, but only under homogeneous conditions and when the instruments characteristics (like the sampling and sensitivity) are taken into account.Malgré leur importance dans le budget radiatif terrestre et les modèles atmosphériques, les nuages arctiques restent mal documentés et incompris. Le déploiement d'un radar millimétrique et d'un lidar à haute résolution spectrale à Eureka (80°N) en août 2005 offre un ensemble unique de données pour l'étude des nuages arctiques. Dans ce projet, des algorithmes synergétiques furent développés et appliqués à deux ans de données pour fournir une première climatologie des nuages et de leur microphysique à cet emplacement éloigné. Les résultats montrent un cycle annuel dans l'étendue des nuages. Ils sont surtout détectés dans les bas niveaux ou en une couche, particulièrement en hiver à cause de l'inversion thermique et du refroidissement radiatif du haut des nuages. Une analyse des vents a démontré que différentes directions sont reliées à différentes conditions nuageuses, alors qu'une forte canalisation des vents due à la topographie est présente dans les bas niveaux. De plus, la phase liquide fut détectée à l'année longue, avec une occurrence minimale en hiver causée par des températures plus froides. De la turbulence et un haut taux d'humidité semblent maintenir les particules liquides surfondues, particulièrement quand des cristaux de glace sont aussi présents. Les précipitations furent principalement identifiées durant l'été, surtout sous forme de virga, bien que la difficulté à distinguer la neige des nuages glacés a pu influencer les résultats. Finalement, la validation d'un satellite est possible grâce aux données d'Eureka, mais seulement sous des conditions homogènes et si les caractéristiques instrumentales
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Geldenhuys, Annelise. "Synergetic Liminality : rebranding the village as a restaurant complex within Sunnyside." Diss., University of Pretoria, 2014. http://hdl.handle.net/2263/45282.
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Gassanly, Murad. "Theory-synergetic approach in IR : case-study of BTC and SGC pipelines." Thesis, Cardiff University, 2018. http://orca.cf.ac.uk/110891/.
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This thesis is a proposal for a theory-synergetic approach to multi-theoretical pluralism in International Relations. It represents an application of IR paradigmatic matrix upon the substantive problem-field of international oil politics – an empirical case-study used here to demonstrate how theory-synergetic analysis might be applied to attain a deeper, more holistic understanding of the given puzzle than would be possible within a single-paradigm research mode. Theory-synergetic approach is grounded in IR disciplinary discourse and is called to respond to the challenges of the latest Great Debate – a maelstrom of competing epistemological, ontological and normative contestations, with profound foundational implications for the future of IR as social scientific project. However, it is argued here that theoretical diversity has knowledge-producing and maximising potential and pluralism does not impede academic progress. Focus on empirical convergences between theoretical accounts normally posited separately provides the broad analytical framework for activating theoretical synergy. By bringing these insights to bear upon questions and issues in international oil politics it is shown that synergetic analysis allows for more complex, multidimensional and multi-layered understanding of the problem-field than single-paradigm research. It is shown that applying different theoretical models upon the same substantive problem-field reveals different realities of that same problem field; yet the resultant synergetic whole is greater than the sum of its constituent paradigmatic parts.
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Lundgren, Tobias. "Synergetic Building Integrated Agriculture in the design of a multi-functional building." Thesis, KTH, Arkitektur, 2021. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-298802.
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This thesis has as the main objective to investigate how to mitigatenegative impacts of urban environments and industrial agriculturethrough architectural design. The applied methodology is based inSynergetic Building Integrated Agriculture (SBIA) in combinationwith strict sustainability requirements (ecological, economical andsocial). Through the qualitative study of SBIA and built case studies it waspossible to identify the common factors and state-of-art technologyto be integrated in the design. This synergetic design proposal thus highlights the importance of amultidisciplinary approach for a successful future implementation ofsustainable SBIA design.
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HÖRNING, Marcel. "Controlling excitable waves in heart tissue: Synergetic approach with experiment and theory." 京都大学 (Kyoto University), 2010. http://hdl.handle.net/2433/120643.
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Bryant, Stephen Peter. "Practice-led research into music : a synergetic trifecta of glissandi, microtonality, and isorhythms." Thesis, University of Central Lancashire, 2016. http://clok.uclan.ac.uk/18594/.
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The contribution to knowledge, and the core of the research, is a tonal foundation based on glissandi using compositional techniques derived from synergy of glissandi, microtonality, and isorhythm. The techniques are performed on specially constructed guitars in 18, 24, 30, and 36 tet (tone equal temperament). Guitar based musical artefacts demonstrating some possible techniques are arranged on two compact discs: CD1 ‘Experimental Miniatures’ and CD2 ‘After Twelve’.
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Hiatt, Michael John. "Synergetic Algal Infrastructure: Investigating the Benefits of Algae Production in an Airport Environment." The Ohio State University, 2013. http://rave.ohiolink.edu/etdc/view?acc_num=osu1366241697.
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Torres-Oviedo, Gelsy. "Robust muscle synergies for postural control." Diss., Atlanta, Ga. : Georgia Institute of Technology, 2007. http://hdl.handle.net/1853/22691.
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Thesis (Ph. D.)--Biomedical Engineering, Georgia Institute of Technology, 2007.Committee Chair: Ting, Lena H.; Committee Member: Chang, Young-Hui; Committee Member: Lee, Robert H.; Committee Member: Nichols, T. Richard; Committee Member: Wolf, Steve L.
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Vinuesa, Ricardo. "Synergetic computational and experimental studies of wall-bounded turbulent flows and their two-dimensionality." Thesis, Illinois Institute of Technology, 2013. http://pqdtopen.proquest.com/#viewpdf?dispub=3574934.
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The study of canonical flows, such as channels, pipes, or boundary layers, is essential for a deeper understanding of the physical mechanisms present in wall-bounded turbulence. Of particular importance in flows delimited by solid walls is the near-wall region where a large fraction of the drag stems from velocity fluctuations in a thin boundary layer adjacent to surfaces. In that context it is interesting to recognize that globally about 10% of all energy is used to overcome turbulent drag in one way or another. The goal of this study is to clarify our understanding in these areas by combining computations and experiments of turbulent duct flows and boundary layers. Oil film interferometry (OFI) and static pressure measurements were carried out over the range 200 < Reτ < 800 (where Reτ is the friction Reynolds number, based on duct half-height h and friction velocity u τ) in an adjustable-geometry duct flow facility. Three-dimensional effects were studied by considering different aspect ratio (AR) configurations. Contrary to the accepted understanding in the field of turbulence research, we found that an aspect ratio of at least 24 is required in order to obtain "high-AR duct conditions" , and a development length of around 200 duct full-heights (for low and intermediate Reynolds numbers) is necessary for appropriate flow development.
The three-dimensional effects present in the flow, i.e., side-wall boundary layers and secondary motions, are also studied by means of direct numerical simulations (DNSs). The spectral element code Nek5000, developed by Fischer et al. (2008), is used to compute turbulent duct flows with aspect ratios from 1 to 10 in streamwise-periodic boxes of length 25h (long enough to capture the longest streamwise structures) and Reynolds numbers Reτ,c = 180 and 330. While preparing the duct simulations, we also considered the necessary averaging times for converged statistics in simulations of wall turbulence; as a result, a set of guidelines regarding sampling times and intervals is also given. We find that the conditions often computed in z-periodic channels cannot be reproduced experimentally, even at very high aspect ratios such as 48, and therefore conclude that "computational channels" and "experimental high-AR ducts" are two different flows. The implications of these findings on wind tunnel experiments (with aspect ratios typically ranging from 3 to 16), and the large volume of available "two-dimensional" zero pressure gradient boundary layer data, are also assessed in this study. We therefore recommend the computational and experimental study of turbulent pipe flows, since this is the only case where matching canonical conditions can be obtained both in DNS computations and experimental facilities.
In addition, we re-analyze currently available Pitot tube corrections for ZPG turbulent boundary layer measurements, and propose new forms with coefficients dependent on inner-scaled Pitot tube diameter, [special characters omitted]. Reynolds number and probe size effects are both introduced in these coefficients, yielding excellent collapse of data over a much wider range of Pitot tube diameters (from 0.2 to 12.82 mm), and very good agreement with reference hot-wire and PIV data. We developed a new correcting scheme, called κ B—Musker, which is able to provide the highest possible accuracy in probe position when applied to profile measurements of wall-bounded flows.
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Wang, Lu [Verfasser], and Reinhard [Akademischer Betreuer] Köhler. "Quantitative and Synergetic Studies on Lexical Units in Chinese / Lu Wang ; Betreuer: Reinhard Köhler." Trier : Universität Trier, 2014. http://d-nb.info/1197806954/34.
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Flecht, Tobias. "Thermal modelling of the PICSAT nanosatellite platform and synergetic prestudies of the CIRCUS nanosatellite." Thesis, Luleå tekniska universitet, Institutionen för system- och rymdteknik, 2016. http://urn.kb.se/resolve?urn=urn:nbn:se:ltu:diva-59925.
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In the present paper, which was written in collaboration with the Observatory of Paris, thermal models of two CubeSat missions were created. The first goal of this work was to create a nodal simulation of the PicSat satellite to verify the survivability of the system within the extreme space environment. In a second step suitable countermeasures were suggested, if parts of the satellite exceeded a critical temperature limit. Additionally, the impacts of three failure modes were investigated. The second goal was to perform thermal pre-studies of different satellite configurations of the CIRCUS satellite based on the model of PicSat. The simulation conducted in this work showed that PicSat fulfils its thermal requirements, except for three components. Out of the failure modes considered in this study, only an error of the attitude determination and control systems (ADCS) showed a critical impact on the thermal state of PicSat. As the outcome of the pre-studies of CIRCUS, two of the considered configurations were recommended for further analysis. The results of this work will contribute to the future development of the PicSat and CIRCUS missions.Dans le cadre de ce mémoire, qui a été rédigé en collaboration avec l'Observatoire de Paris, les modèles thermiques de deux missions CubeSat ont été créés. Le premier objectif de ce projet était de d\'velopper une simulation nodale du satellite PicSat afin de vérifier la capacité de survie du système dans les conditions hostiles de l'espace. Dans un second temps, des mesures correctives ont été suggérées si la température de certaines sections du satellite venait à excéder une limite critique. En outre, les impacts de trois défaillances ont été analysés. Le second objectif était de réaliser des pré-études thermiques pour différentes configurations du satellite CIRCUS basées sur le modèle de PicSat. Les simulations réalisées dans le cadre de ce projet ont montré que PicSat remplit ses exigences thermiques, à l'exception de trois composants. Des différentes défaillances étudiées, seule une erreur du système de détermination et de contrôle d'attitude (Attitude Determination and Control System ADCS) a montré un impact critique sur l'état thermique de PicSat. A l'issue des pré-études de CIRCUS, deux des configurations étudiées ont été recommandées pour être l'objet d'une analyse plus avancée. Les résultats de ce projet contribueront au développement à venir des missions des satellites PicSat et CIRCUS.
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Detrell, Domingo Gisela. "Analysis and simulation of a synergetic environmental control and life support system for long duration spaceflight." Doctoral thesis, Universitat Politècnica de Catalunya, 2015. http://hdl.handle.net/10803/348260.
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Manned missions carried out in the last decades were either close to Earth or short missions. In contrast, Space Agencies future plans include manned exploration missions to asteroids, the Moon and finally Mars. The expected mission durations rise significantly and the greater distance from Earth makes a resupply or rescue mission almost impossible. These future plans make it necessary to develop a new Environmental Control and Life Support System (ECLSS), which ensures the survival of the astronauts for such missions. These frame conditions will impose a high degree of closure and a high reliability for the ECLSS.
In this thesis, firstly, the different ECLSS technology/component options are presented, and its suitability for a long duration human spaceflight is analyzed. From all technologies the most promising, regenerative systems for atmosphere, water and waste management are selected in order to examine them as part of a complete ECLSS.
Different approaches to evaluate the reliability of complex systems are analyzed. Since the failure of a component within the system does not necessarily lead a failure of the entire ECLSS, as the system is able to compensate for some failures, the Stochastic Dynamic Discrete Simulation (SDDS) method is selected. To carry out an SDDS, a robust and adaptable ECLSS model simulation is required. A new software is developed, based on the simulation tool Environment for Life-Support Systems Simulation and Analysis (ELISSA) from the Institute of Space Systems -
University of Stuttgart. As a result of a stochastic simulation a list of failure times is obtained, which can be treated using the Maximum Likelihood Estimation (for parametric models) or the Kaplan-Meier method (for non-parametric models), to define the reliability of the system. The input data required to apply the SDDS are the reliabilities of each possible component of the ECLSS.
The reliability of each component is defined by the failure rate or its parts. It can be seen, that the use of redundancies (spare parts) is essential for long duration missions, as the reliability of the system without them after 60 days is lower than 50%. The analysis of all components, including their spare parts, is carried out with the Multi-Opbjective Optimization Problem to achieve a high reliability with the lowest possible mass.
Both methodologies, SDDS and MOOP have been implemented creating the user-friendly new software RELISSA. Finally, as an example, RELISSA is used to analyze a manned Mars mission. With this analysis, technologies currently in use (on board ISS) are compared with new technologies (currently under development), with the potential to reduce the system mass. The results clearly show that the new technologies can significantly reduce the mass of the system, for results of similar reliability. With these results, the need of development efforts of ECLSS technologies for manned missions beyond Low Earth Orbit is corroborated.Les missions tripulades realitzades en les últimes dècades, van ser missions properes a la Terra o de curta durada. Per contra, els plans futurs de les Agències Espacials inclouen missions d'exploració tripulades a asteroides, la Lluna o Mart. La durada esperada d'aquestes missions s'incrementa significament i la major distància de la Terra fa que una missió d’abastiment o rescat sigui pràcticament impossible. Aquests futurs plans fan necessari el desenvolupament d'un nou Sistema de Control Ambiental i Suport a la Vida (ECLSS - Environmental Control and Life Support System), que asseguri la supervivència dels astronautes per a aquestes missions . Aquestes condicions imposen un alt nivell de tancament del sistema i una alta fiabilitat per al ECLSS. En aquesta tesi, es presenten les diferents opcions tecnològiques, components i s’analitza la seva viabilitat per a missions tripulades de llarga durada. De totes les tecnologies, se seleccionen els sistemes regeneratius més prometedors per a la gestió de l’atmosfera, l'aigua i els residus, per tal d'analitzar-los com a part de l'ECLSS. S'analitzen diferents mètodes per tal d'avaluar la fiabilitat de sistemes complexos . Com que la fallada d'un component del sistema no implica necessàriament una fallada de tot l'ECLSS, ja que el sistema és capaç de compensar algunes fallades, se selecciona el mètode de simulació dinàmica- estocàstica (SDDS - Stochastic Dynamic Discrete Simulation). Per a dur a terme l'SDDS, es necessita un model de simulació ECLSS robust i adaptable. Es desenvolupa un nou software, basat en l'eina de Simulació de l'Institut de Sistemes Espacials - Universitat de Stuttgart, Environm ent for Life-Support Systems Simulation and Analysis (ELISSA). Com a resultat de la simulació estocàstica, s'obté una llista de temps de fallada, a partir de la qual, amb el mètode de Màxima Versemblança (per a models paramètrics ) o de Kaplan-Meier (per a models no paramètrics ) es defineix la fiabilitat del sistema. Les dades d'entrada necessàries per aplicar l'SDDS són les fiabilitats de cada un dels possibles com ponents de l'ECLSS. La fiabilitat de cada component es defineix a partir de la taxa de fallada de les seves parts. Es pot observar que l'ús de redundàncies (peces de recanvi) és essencial per a missions de llarga durada, ja que la fiabilitat del sistema sense recanvis disminueix més del 50% passats 60 dies. L'anàlisi de tots els components, incloent-hi les peces de recanvi, es realitza a partir del problema d'optimització d'objectius múltiples (MOOP - Multi-Opbjective Optimization Problem ), per tal d'obtenir una altra fiabilitat amb la menor massa possible. Les dues metodologies , SDDS i MOOP, s'han implementat creant un nou software, user-friendly, RELISSA. Finalment, com exemple, s'ha utilitzar RELISSA per analitzar una missió tripulada a Mart. Amb aquesta anàlisi es comparen tecnologies actualment en ús (a l'Estació Espacial Internacional) i noves tecnologies (actualment en desenvolupament) amb el potencial de reduir la massa del sistema. Els resultats mostren clarament que les noves tecnologies poden reduir significament la massa dels sistema, per a resultats similars de fiabilitat. Amb aquests resultats, es corrobora la necessitat de dedicar esforços de desenvolupament en tecnologies ECLSS per a missions tripulades més enllà de l'òrbita baixa terrestre (LEO - Low Earth Orbit).
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Wahl, Ariane [Verfasser], and Christiane [Akademischer Betreuer] Schiersmann. "Selbstorganisation fördern in der beruflichen Beratung. Die Synergetik als metatheoretisches Rahmenkonzept zur Fundierung eines integrativen Beratungsansatzes / Ariane Wahl ; Betreuer: Christiane Schiersmann." Heidelberg : Universitätsbibliothek Heidelberg, 2018. http://d-nb.info/1177252732/34.
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Huang, Yu-Chieh [Verfasser]. "Multistep Crystallization via Biomolecular and Ionic Additives : Bidirectional Synergetic Interactions in Protein-Directed Mineralization / Yu-Chieh Huang." Konstanz : KOPS Universität Konstanz, 2019. http://d-nb.info/119926654X/34.
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Bottein, Thomas. "Synergetic combination of top-down and bottom-up lithography processes for large scale nanostructures applied to photonics." Thesis, Aix-Marseille, 2018. http://www.theses.fr/2018AIXM0175/document.
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Le but de cette thèse est d'adopter une approche hybride par la combinaison des méthodes de lithographie ascendantes et descendantes pour la fabrication de nanostructures avec des propriétés structurales et optiques d’intérêt. Cette approche multidisciplinaire est un domaine vaste ou les combinaisons prometteuses sont nombreuses mais restent inexplorées jusqu'à présent. Ces travaux vont s’intéresser aussi bien à la chimie des matériaux qu'aux techniques de nanofabrication de salle blanche afin d'apporter des solutions pratiques aux problèmes actuels rencontrés en nanofabrication. Plus précisément, nous nous intéressons à l’étude de certaines techniques de lithographies (en particulier à la nano-impression) et démontrons la possibilité d’améliorer la cadence de fabrication en obtenant des nanostructures sur une échelle de plusieurs centimètres carrés. Les nanostructures fabriquées sont principalement utilisées comme résonateurs de Mie pour leurs propriétés optiques et leur capacité à modifier la lumière incidente. Des démonstrateurs de plusieurs millimètres carrés sont réalisés et montrent des propriétés optiques intéressantes soulignant la viabilité de notre approcheThe scope of this thesis is to adopt a hybrid approach through the synergetic combination of bottom-up and top-down lithography methods to fabricate nanostructures with interesting structural and optical properties. This multidisciplinary approach is a vast fruitful field where many combinations are promising but remains unexplored so far. By taking interest in, and bringing together, both materials chemistry and clean-room nanofabrication techniques, this work tries to find practical solutions to tackle some of the current challenges in nanofabrication. In details, we focus on the study of selected lithography techniques (in particular nanoimprint) and demonstrate the possibility to increase the fabrication throughput and obtain nanostructures on a centimeter scale. The nanofabricated structures are then mainly used as Mie resonators for their optical properties and their ability to modify incoming light. Demonstrators of several millimeters are produced and are shown to exhibit interesting optical properties; emphasizing the feasibility of our approach
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Detrell, Gisela [Verfasser]. "Analysis and Simulation of a Synergetic Environmental Control and Life Support System for Long Duration Spaceflight / Gisela Detrell." München : Verlag Dr. Hut, 2016. http://d-nb.info/1103872303/34.
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Oladimeji, Peter Olusoji. "The role of tyrosyl phosphorylated PAK1 in the synergetic effect of estrogen and prolactin in breast cancer cells." University of Toledo / OhioLINK, 2015. http://rave.ohiolink.edu/etdc/view?acc_num=toledo1438797559.
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Huy, Christoph Verfasser], Winfried [Gutachter] [Palmowski, and Günter [Gutachter] Schiepek. "Lernprozessbegleitung als Förderung von Selbstorganisationsprozessen : Konzeption und Erprobung eines Modells vor dem Hintergrund der Theorie der Synergetik / Christoph Huy ; Gutachter: Winfried Palmowski, Günther Schiepek." Erfurt : Universität Erfurt, 2020. http://d-nb.info/1225298687/34.
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Hankinson, Marie Regina. "The lived experience in relation to the educational needs of nurses caring for induced hypothermia patients." Diss., NSUWorks, 2017. https://nsuworks.nova.edu/hpd_con_stuetd/25.
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Background: Ongoing educational development is essential to ensure the effectiveness of professional nurses’ learning experiences. Understanding the ways in which workplace learning occurs is fundamental to enabling nurse educators to deliver that knowledge. Induced hypothermia was introduced as a new treatment modality in 2005 and education surrounding the care of the hypothermia patient is lacking in the literature. Purpose: The purpose of this study is to illuminate how nurses learn new knowledge in the clinical setting. Theoretical Framework: The learning theory chosen for this study is the three dimensions of learning by Illeris (2004). Methods: Semistructured interviews were conducted with each participant in one individual, face-to-face session to examine the lived experiences of nurses providing care to induced hypothermia patients. A hermeneutic phenomenology method was chosen based on the work of van Manen. Hycner’s methodological approach was utilized to analyze data. Results: In this study, four learning areas emerged which corresponded to Illeris’ (2003b) three dimensions of learning, including cognitive, emotional, and environmental-social dimensions. The main theme described by every nurse interviewed was the necessity to have hands-on experience to feel competent in their care for induced hypothermia patients. The unit had a special identity because of their unique work of providing hypothermia care and one nurse explained, “We are making history.” Conclusions: Nurses preferred hands-on learning or experiential learning and they helped construct their learning environment. Nurse educators and nurse leaders fueled this synergetic learning process.
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Bovchaliuk, Valentyn. "Aerosols properties as retrieved from the GARRLIC synergetic approach applied to multi wavelength Raman LiDAR observations performed over Lille and Dakar sites." Thesis, Lille 1, 2016. http://www.theses.fr/2016LIL10145/document.
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Les aérosols sont une composante très variable de l’atmosphère terrestre et font l’objet d’une attention croissante de la communauté scientifique et de la société. Depuis 2005, le LOA développe une activité reconnue en instrumentation, observation et inversion LiDAR pour la mesure des profils verticaux des paramètres descriptifs de ces aérosols. Depuis 2011, cette nouvelle thématique est soutenue par le projet européen ACTRIS (Aerosol Cloud and Trace gas Infrastructure) et le Labex CaPPA (Chemical And Physical Processes in the Atmosphere). Le premier objectif de cette thèse visait à déployer un nouveau LiDAR multi-longueur d’onde-Raman-polarisé, LILAS, d’une part sur la plateforme de mesures atmosphériques de l’université de Lille et d’autre part sur la station de géophysique de l’IRD à Dakar dans le cadre de la campagne de terrain SHADOW-2. Le second objectif visait à restituer puis étudier les propriétés optiques et microphysiques des couches aérosols détectées. Une méthodologie d’inversion innovante GARRLIC/GRASP a été mise en oeuvre et améliorée pour interpréter une série d’évenements aérosols (pollution locale, poussières minérales d’origine désertique transportées jusqu’à Lille mais également observés à Dakar, proche des zones sources). Cette nouvelle technique d’inversion combine les mesures primaires issues de la photométrie solaire (epaisseur optique et luminance spectrales) avec les profils de retrodiffusion LiDAR à 355, 532 et 1064 nm. Les propriétés des aérosols ambiants étant également fonction de l’humididité atmosphérique, une dernière partie a porté sur la mesure du profil de rapport de mélange de la vapeur d’eau accessible à partir de LILASAerosol particles are a highly variable component of the atmosphere and are now studied by a wide community. Since 2005, LOA is developing a recognized expertize in LiDAR observation devoted to aerosols profiling. Since 2011 this activity is supported by ACTRIS (Aerosol Cloud and Trace gas Infrastructure) and CaPPA (Chemical And Physical Processes in the Atmosphere) projects. The first objective of this work was to built, set up and characterize a new multi-wavelength Raman Polarized LiDAR (LILAS) operating at LOA observation platform located on the Campus. This system has also been operated during the SHADOW-2 field campaign (2015-2016) at Dakar (IRD station, Senegal). The second objective of the thesis consisted in developing aerosols retrievals and analyzing aerosols retrievals in term of optical and microphysical properties. An innovating synergetic approach (GARRLIC/GRASP) has been used and improved to interpret several aerosol events (local pollution, mineral dust transported to Lille and mineral dust detected at Dakar, close to sources). This new technique is combining primary data obtained from sun/sky photometer (spectral AOD and spectral radiance) and elastic LiDAR backscattering profiles (355, 532 and 1064 nm). Ambient aerosols properties being also sensitive to the atmospheric humidity, a last part of the work has be devoted to profiling water vapor mixing ratio from LILAS night time data
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Jelínková, Daniela. "Zhodnocení existence synergických efektů u vybraných konsolidujících subjektů." Master's thesis, Vysoké učení technické v Brně. Fakulta podnikatelská, 2016. http://www.nusl.cz/ntk/nusl-241579.
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The diploma thesis focuses on the assessment of synergistic effect in a consolidated entity. The thesis is necessary to select appropriate indicators for the analysiss of the achievement of synergy. It is evaluated whether the consolidated group achieved a synergistic effect of the acquisition based on the evaluation indicators and other available informations.
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Simo, Tala Jules Voguelin. "Analyse des structures tourbillonnaires et des mécanismes de transfert thermique dans les échangeurs de chaleur multi-rangs de tubes ailetés : Amélioration et optimisation des performances thermoaérauliques." Thesis, Valenciennes, 2012. http://www.theses.fr/2012VALE0015.
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Dans cette thèse, nous analysons l’écoulement et les transferts thermiques convectifs dans des modèles géométriques d’échangeurs de chaleur multi-rangs de tubes à ailettes planes continues. Dans un premier temps, les phénomènes Aérauliques qui s’y développent sont mis en évidence par des mesures PIV et LDA. Une étude locale de la génération, du développement, de l’évolution spatiale etde la dissipation des enroulements tourbillonnaires produits dans l’échangeur est effectuée. Dans un second temps, des simulations numériques U-RANS sont réalisées et validées par comparaison de la structuration de l’écoulement et de la dynamique tourbillonnaire aux mesures expérimentales. Dansun troisième temps, l’influence de ces tourbillons sur le transfert thermique est mise en exergue. Les performances d’échange sont caractérisées selon une analyse de synergie entre le champ de vitesse, les gradients de vitesse et de température ainsi qu’en évaluant les irréversibilités thermoaérauliques produites dans l’écoulement. Dans un quatrième temps, une analyse de l’influence de la forme du tube sur les performances thermoaérauliques locales et globales de l’échangeur est effectuée selon le premier et le second principe de la Thermodynamique. Les transferts thermiques, les pertes visqueuses ainsique les taux de production d’entropie thermique et visqueuse dans le fluide sont évalués. Enfin une méthode d’optimisation géométrique globale basée sur l’analyse factorielle de TAGUCHI est utilisée pour sélectionner les paramètres les plus influents sur les performances thermoaérauliques globales dans l’optique d’une conception optimisée des surfaces d’échange pour une application à la climatisationferroviaireIn this thesis, we analyze the flow and convective heat transfer in multi-row plain fin and tube heat exchangers. The aeraulic phenomena that occur in these devices are first highlighted by means of PIV and LDA measurements. A local study of horseshoe vortices production, development, spatial evolution and dissipation is therefore performed. Secondly, Unsteady RANS modeling of the flow is carried out by means of numerical simulations and the results are validated by comparing theflow structure and the vortex dynamics with experimental data. In a third step, the influence of these vortices on heat transfer is highlighted. The thermalhydraulic performances are characterized on the basis of an analysis of synergy between the velocity field, velocity gradients and temperature gradients.The thermal and viscous entropy rate generated in the flow are locally characterized. In a fourth step, an analysis of the influence of the tube pattern on thermalhydraulic performances is performed by considering the first and the second law of thermodynamics. The convective heat transfer and wallviscous friction losses are evaluated as well as thermal and viscous entropy production rates. Finally an overall geometrical optimization process based on the factorial analysis of TAGUCHI is used to select the major parameters that affect the thermalhydraulic performances aiming to optimize the design ofmultirow plain fin-and-tube heat exchangers for HVAC applications in rail transport
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Duverger, Agathe. "Valorisation par flottation des minerais à faible teneur en uranium : étude de la texture et des effets synergiques des réactifs de flottation." Thesis, Université de Lorraine, 2013. http://www.theses.fr/2013LORR0285/document.
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La demande en énergie grandissante, les gisements d'uranium à faible teneur pourront être ceux exploités dans le futur. Le traitement conventionnel de minerais d'uranium utilise peu de procédés minéralurgiques de concentration permettant la réduction de consommation de réactifs de lixiviation. Le but de ce travail est de développer un procédé de valorisation visant l'amélioration du procédé d'exploitation (lixiviation alcaline en tas) prenant en compte la variabilité minéralogique et texturale du minerai. Le gisement de Trekkopje, est composé d'une calcrète et d'une gypscrète. Le minéral porteur de l'uranium est la carnotite (K2(UO2)2[VO4]2.3H2O). Les minéraux de gangue sont composés de silicates tels que le quartz, les feldspaths, les micas et de minéraux du calcium, la calcite et le gypse (analyses en DRX, ICP-MS). Un traitement d'images MEB a permis d'étudier les propriétés texturales et la surface exposée des inclusions dans les amas d'argiles (cf. Figure 1). Dans la calcrète broyée à -200 µm, 50 % de l'ensemble de la carnotite est en moyenne associée aux amas d'argiles, composés à 98 % de palygorskite, 2% d'illite, de montmorillonite et d'interstratifiés (analyses DRX et microsonde électronique de Castaing). La taille des grains de carnotite est à 95 % inférieure à 70 µm. La calcite est la principale inclusion dans les amas d'argiles avec un taux moyen d'inclusion de 12% tandis que celui de la carnotite s'élève à 5%. Le pourcentage de surface exposée moyen de ces minéraux, dans les amas, est de 6 % et de 3 %, respectivement, ceci indiquant que les inclusions ne devraient pas influencer le comportement des particules mixtes d'argile. Cependant, les essais de flottation sur minerai n'ont pas vérifié cette hypothèse. Trois voies de séparation minérales ont été proposées en fonction de l'aptitude des minéraux à consommer le réactif de lixiviation : les minéraux calciques des silicates, la palygorskite des minéraux de gangue et la carnotite des minéraux de gangue. Une étude des propriétés électrocinétiques en électrophorèse des silicates et des minéraux calciques a été réalisée afin de choisir les collecteurs et l'intervalle de pH optimal à une flottation sélective. Un pH basique proche de la neutralité est révélé optimal pour la séparation des minéraux de gangue avec des collecteurs cationiques ou anioniques en s'appuyant sur les valeurs de PIE des minéraux : silicates pH 1-2, palygorskite pH 3, francolite pH 3-4 et minéraux du calcium pH 9-10. Les isothermes d'adsorption des amines primaires avec un réactif nonionique obtenues par chromatographie gazeuse mettent en évidence leur coadsorption sur la surface des silicates à pH 8. La présence du réactif non ionique permet la formation d'une couche d'adsorption plus dense sur la surface minérale déduite des déplacements des bandes de vibration symétriques et asymétriques des groupements CH2, CH3 sur les spectres infrarouge en réflexion diffuse. La palygorskite est séparée de l'ensemble de minéraux calciques et silicates purs à pH 8, avec un mélange de collecteurs tels qu'une amine primaire et un alcool aliphatique sans utiliser de déprimants spécifiques. Une séparation nette entre minéraux du calcium et des silicates est réalisée à pH 8 en combinant l'oléate de sodium avec le même réactif nonionique. Des effets synergiques des mélanges de réactifs ioniques avec un réactif non ionique ont été mis en évidence avec un abaissement de la consommation en réactif ionique de deux à dix fois. Les essais de flottation en cellule mécanique de laboratoire de 1L sur le minerai ont confirmé les résultats obtenus en flottation des minéraux purs avec les collecteurs anioniques. L'élimination des minéraux du calcium (produit flotté contenant 25 % de l'uranium), des silicates (produit non flotté contenant 75 % de l'uranium) en utilisant une combinaison d'oléate de sodium et d'un alcool aliphatique est la voie de séparation par flottation retenue [...]Due to the energy growing demand, uranium low grade ores may be those exploited in the future. Uranium ores conventional treatment doesn't often use mineral processing such as concentration methods for reducing leaching reagent consumption. The aim of this work is to develop an upgrading process to improve the operating process (alkaline heap leaching) taking into account the mineralogical and textural variability of the ore. The Trekkopje deposit is composed of calcrete and a gypscrete. The uranium bearing mineral is carnotite (K2 (UO2)2 [VO4]2.3H2O). The gangue minerals are composed by silicates, such as quartz, feldspars, micas and Ca-minerals, calcite and gypsum (XRD and ICP-MS analysis). A SEM image processing was used to study the textural properties and the exposed free surface of mineral inclusions in clay clusters. In calcrete milled to -200 µm, 50 % of all carnotite is associated with clay clusters, which are composed by 98 % of palygorskite, 2 % of illite, montmorillonite, and interbedded clays (XRD and microprobe analysis). The carnotite grain size is 95% less than 70 µm. Calcite is the main inclusion in clay clusters. Indeed, the calcite inclusions average rate in the clay clusters is 12 % and 5 % for carnotite inclusion. And the free exposed surface percentage of these minerals in clay clusters is 3 % and 6 %, thus indicating that the inclusions should not affect the behavior of mixed clay particles. However, ore flotation essays didn't verify this hypothesis. Three minerals separation have been proposed based on the mineral ability to consume leaching reagents: separating Ca-minerals from silicates, palygorskite from gangue minerals and carnotite from gangue minerals. A study of silicates and Ca-minerals electrokinetic properties (electrophoresis) was carried out to select the collectors and the optimum pH range for selective flotation. Basic pH near neutral was proved to be optimal for the separation of gangue minerals with cationic or anionic collectors (silicates IEP - pH 1-2, palygorskite IEP - pH 3, francolite IEP - pH 3-4 and IEP minerals calcium - pH 9 - 10). The adsorption isotherms of the primary amines with a nonionic reagent obtained by gay chromatography highlight their coadsorption on the silicates surface at pH 8. The presence of nonionic reagent allows to the formation of a compact layer on the mineral surface, derived from the displacement of the symmetric and asymmetric vibration groups CH2, CH3 of the infrared diffuse reflectance spectra. Palygorskite is separated from the pure Ca-minerals and silicates at pH 8, with a mixture of a primary amine and a nonionic reagent such as collectors, without using specific depressant. A clear separation of Ca-minerals and silicates is carried out at pH 8 by combining sodium oleate with aliphatic alcohols. The synergistic effects of ionic and nonionic reagents were highlighted with an ionic reagents consumption reduction by two to ten fold. The ore flotation tests have confirmed the results obtained in pure mineral flotation with anionic collectors. The removal of Ca-minerals (floated product containing 20 % of uranium), silicates (nonfloated product containing 80 % of uranium) using a combination of sodium oleate and an aliphatic alcohol is the separation by flotation chosen solution. This study led to exploitable results in solving the problem by coupling multi-scale approaches
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Švásta, Ondřej. "Vybudování sítě malých vinařských podniků." Master's thesis, Vysoké učení technické v Brně. Fakulta podnikatelská, 2011. http://www.nusl.cz/ntk/nusl-223289.
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This diploma thesis drafts concept of winery based on business network of small wineries using synergetic effect. Critical analysis of macro and micro environment together with explorative research of small wineries was used as a starting point. Based on obtained information, concept of mentioned winery is proposed as an outcome of this thesis.
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Testov, Vladimir A. "On Evaluation Problem of the Quality of Educational Models." Saechsische Landesbibliothek- Staats- und Universitaetsbibliothek Dresden, 2012. http://nbn-resolving.de/urn:nbn:de:bsz:14-qucosa-81008.
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The current approach to assessing the educational quality applicable to assessing objects and processes formed and realized in producing spheres is widely spread. However, as education is a much more complicated anthropological, social and cultural object in comparison to that of production, the above mentioned approach is least effective. In education both \"strong\" and \"weak\" models are used.
There do not exist measurement instruments for accurate assessing mild results. Self control, expert assessing method and portfolio are being put forward.
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Oteafy, Sharief M. A. "Global Resource Utilization for Synergetic Wireless Sensor Networks." Thesis, 2013. http://hdl.handle.net/1974/8216.
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In a domain with diverse multi-disciplinary views of what a Wireless Sensor Network (WSN) is, tracking progress and developing efficient WSNs is inherently a complex process. The main motivation of this work is advancing state-of-the-art WSNs by adaptively utilizing their components, and enlisting the utility of resources in network vicinity. As WSNs increase in density and expand in scale, we continue to witness an increase in overlapped deployments that serve independent applications. In most scenarios, new networks are deployed for new applications without considering previous or neighboring WSNs.
This thesis presents the resource reuse (RR-WSN) paradigm. Adopting a generic framework for resource utilization, we achieve synergy between heterogeneous sensing systems. We abstract the view of a WSN in terms of functional capabilities, and offer a component-based view to boost sensor node (SN) potential and contribution to WSN operation. Thus SNs provide resources. On the other hand, we formally derive a set of functional requirements per application. The design and deployment of WSNs thus converges to an optimal assignment of functional requirements to resources.
Two mainstream designs of WSNs are addressed in this thesis. The first involves WSNs with static deployments of nodes, whereby multiple applications run on networks in a given vicinity, yet the resources and applications share an owner (e.g., on a University Campus). We then present a Binary Integer Programming formulation to find the optimal assignment of resources to these functional requirements, while minimizing the energy impact of running each functional request.
We further extend our scope to include WSNs that depend on transient nodes, such as smartphones, in a dynamic (DRR-WSN) paradigm, which could contribute significantly to the resource pool. Intuitively, multiple-owners are involved as resource providers and require different applications. Thus, we address the valuation of resources as they are shared across network owners. We finally present a maximal matching problem of finding the lowest cost for running each application, based on the available resource pool in the vicinity required. Extensive performance evaluation depicts the impact of RR-WSN design on WSN operation and longevity in various scenarios.Thesis (Ph.D, Computing) -- Queen's University, 2013-08-27 04:44:14.556
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Padhee, Srikant Sekhar. "A Synergetic Micromechanics Model For Fiber Reinforced Composites." Thesis, 2011. http://etd.iisc.ernet.in/handle/2005/2381.
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Composite materials show heterogeneity at different length scales. hence concurrent multiscale analysis is the only reliable method to analyze them. But unfortunately there is no concurrent multi-scale strategy that is efficient, and accurate while addressing all kinds of problems. This lack of reliability is partly because there is no micro-mechanical model which inherently keeps all relevent global information with it. This thesis tries to fill this gap. The
presented micro-mechanical model not only homogenizes the micro-structure but also keeps the global information with it. Most of the micro-mechanical models in the literature extract the Representative Volume Element (RVE) from the continuum for analysis which results in loss of information and accuracy. In the present approach also, the RVE has been extracted
from the continuum but with the major difference that all the macro/meso-scopic parameters are accounted for. Five macro/meso-scopic one dimensional parameters have been defined which completely define the effect of continuum. 11 for one dimensional stretch, _1 for torsion, __ (_ = 2, 3) for bending and _33 for uniform pressurization due to the presence
of the continuum. Further, the above macro/meso-scopic parameters are proven, by the asymptotic, theory to be constant at a cross section but vary, in general, over the length of the fiber. Hence, the analysis is valid for any location and is not restricted to any local domain.
Three major problems have been addressed:
• Homogenization and analysis of RVE without any defects
• Homogenization and analysis of RVE with fiber-matrix de-bonding
• Homogenization and analysis of RVE with radial matrix cracking.
Variational Asymptotic Method (VAM) has been used to solve the above mentioned problems
analytically. The results have been compared against standard results in the literature and
against 3D FEA.
At the end, results for “Radial deformation due to torsion” problem will be presented
which was solved “accidentally.”
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Haberstock, Sandra. "Synergetik des Autogenen Training : nicht-lineare, adaptive Methoden zur Identifizierung vegetativer Rhythmen /." 2005. http://bvbr.bib-bvb.de:8991/F?func=service&doc_library=BVB01&doc_number=014576954&line_number=0001&func_code=DB_RECORDS&service_type=MEDIA.
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許書維. "Synergetic Effect of Ni/V2O3 Catalysts to Optimize Carbon Dioxide Methanation." Thesis, 2011. http://ndltd.ncl.edu.tw/handle/54880127855657297261.
Full textAbstract:
碩士國立交通大學
應用化學系碩博士班
99
The synergetic effect between Ni and V2O3 in carbon dioxide methanation was investigated using compositions, different loading, reaction temperature, amount of catalysts and synthetic routes. The catalysts were characterized by powder X-ray diffraction (PXRD), inductively coupled plasma-atomic emission spectrometer (ICP-AES), X-ray photoelectron spectroscopy (XPS) and temperature programmed reduction (TPR). Formation of Ni–V–O solid solution was confirmed by XPS and TPR studies. The optimal Ni/(Ni + V2O3) molar percent for the highest methane yield is found to be 40. The conversion of carbon dioxide to methane was increased as the amount of loading catalysts increased. Catalysts with Ni/(Ni + V2O3) molar percent of 40 were synthesized by sol-gel, hydrothermal and impregnation methods to study their catalytic activity for carbon dioxide methanation. The results indicate that catalyst prepared by sol-gel method exhibits better performance compared with other methods due to its well-dispersed particles that optimized the amount of triple phase boundaries (TPB) between gas phase and the catalyst. The catalyst with Ni/(Ni + V2O3) molar percent of 40 showed the best activity among other catalysts with the carbon dioxide conversion ~93(1) %, the selectivity of methane ~100(1) % at 400ºC, and very stable catalytic activity for 55 hours.
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Parng, Yuh-Jiuan, and 龐玉涓. "Identifying Potentially Defaulting Firms from the Corporate Governance Perspective – A Synergetic Approach." Thesis, 2010. http://ndltd.ncl.edu.tw/handle/29233552429434956060.
Full textAbstract:
博士雲林科技大學
管理研究所博士班
98
Identifying potentially defaulting corporations is a challenge for most financial professionals. Besides the financial reporting, the evaluation of corporate governance (CG) mechanisms constitutes an alternative strategy for singling out these companies. Furthermore, it is even crucial for financial professionals or regulators to understand the relative ranking of seriousness for the potential defaulting companies while making auditing and/or supervising decisions. In order to resolve this urgent problem which is of the most importance after the incidence of the global financial turmoil between 2008-2009, this research proposes a synergetic approach which provides a more logically sound serial methodologies. Firstly, construct a logistic regression model to filtrate critical criteria both in CG and financial performance in defaulting firms; secondly, apply the classification and regression tree (CART) technique to emulate the yes/no identification pattern of human being via the decision tree structure to predict the defaulting status of a firm; then lastly, adopt the fuzzy multicriteria decision analysis (FMCDA) method to have in depth understanding of the relative ranking of the seriousness in firms getting defaulted. The fruitful results of this research include: 1) providing further literature review and comment about the influence of the corporate governance on the defaulting status of firms, especially, after the financial turmoil in the period of 2008-2009; 2) identifying the set of significant impact factors/criteria that cause defaulting firms, which includes the size of board of directors (BOD), seats in BOD held by managers, seats in BOD controlled by family group, total shares held by family group, ratio of shares pledged in BOD, and a firm that changes its CPA in three years prior to the default, total assets, and total debt to total assets; 3) developing a synergetic approach which comprises three analytical phases to lead to logical evidence about the “possibility/seriousness” of the potential defaulting firms and successfully explores that the CAP changes prior to default year plays influentially role in the final rankings among the risky firms. The contributions are of the most referential value for decision makers in auditing evaluation, financial risk judgment and supervising practice.
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Liu, Yen-wei, and 劉彥維. "An Evaluation of Investment Potential on Green Energy Industry – A Synergetic Approach." Thesis, 2013. http://ndltd.ncl.edu.tw/handle/97147376056493735536.
Full textAbstract:
碩士亞洲大學
會計與資訊學系碩士班
101
In the wake of global climate change and natural resource destruction and depletion, sustainable energy has turned into human’s important future vision. Synchronized with the global path, Taiwan government also has implemented several sustainable energy policies. With the guide and the policies from the government, also the consumer demand for environment-friendly commodity, more and more companies have stepped into green energy industry. According to the Green Energy Industry Information Net, there are 404 firms in green industry, 113 firms are listed on either TSE or OTC or about to list. Viewing from the trend, there will be an expectation from either government or the market. For most public investors who intend to discover potential stars for their fortune, an early evaluation and prediction system is crucial. To suffice the aforementioned targets, the objective of this paper is to develop a two-phase approach for identifying potential firms from the industry, finance and corporate governance aspects. The two-phase approach will: 1) explore not only the impact attributes of firm value by logistic regression model, but furthermore, The results show the company seniority, capital expenditures, revenue growth and corporate governance composite indicator has significant, 2) generate rankings of the 29 firms who has excellent performance in the last three years based on analytic hierarchy process(AHP). After sorting the top ten firms to verify the closing prices go down in 2012, 6 firms ranking position change within the two .The results can assist not only understand the whole green industry but also be the final reference support for investment decisions.
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Ho, Tien, and 何恬. "The Effect of Synergetic and Redundant Interaction among Spectral Bands in Mandarin Speech." Thesis, 2006. http://ndltd.ncl.edu.tw/handle/77584794850694601647.
Full textAbstract:
碩士國立陽明大學
復健科技輔具研究所
94
Two listening experiments were designed to evaluate the interaction of spectral bands in Mandarin speech recognition. The experiments aimed to identify if there is any synergetic and redundant effect of spectral frequency bands in monosyllabic Mandarin words. In experimentⅠ, twenty normal hearing subjects listened monosyllables through 20 band-pass filters, which have center frequency ranging from 125 to 10000 Hz, 1/3 octave bandwidth and filter slope of 100 dB/octave. The purpose of experiment I was to identify the intelligibility of spectral frequency bands in Mandarin speech. In experiment Ⅱ, 20 subjects listened monosyllables with the combination of 2 or 3 individual bands for investigating the synergetic or redundant interactions. The perceptual outcomes of the second experiment were compared to the product of combined 2 or 3 bands. To identify what kind of the interaction within spectral frequency bands in Mandarin words. The results indicated that the contribution of each band to recognition of Mandarin monosyllables was not independent, and the recognition of Mandarin tones, consonants and vowels showed different redundant and synergetic effects.
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Xie, Yu. "Study of Ice Cloud Properties from Synergetic Use of Satellite Observations and Modeling Capabilities." 2010. http://hdl.handle.net/1969.1/ETD-TAMU-2010-12-8801.
Full textAbstract:
The dissertation first investigates the single-scattering properties of inhomogeneous ice crystals containing air bubbles. Specifically, a combination of the ray-tracing technique and the Monte Carlo method is used to simulate the scattering of light by randomly oriented large hexagonal ice crystals containing spherical or spheroidal
air bubbles. The effect of the air bubbles within ice crystals is to smooth the phase functions, diminish the 22° and 46° halo peaks, and reduce the backscatter in comparison with the case of bubble-free ice crystals. Cloud reflectance look-up tables were generated at the wavelengths of 0.65 μm and 2.13 μm to examine the impact of accounting for air
bubbles in ice crystal morphology on the retrieval of ice cloud optical thickness and effective particle size.
To investigate the effect of the representation of aggregates on electromagnetic scattering calculations, an algorithm is developed to efficiently specify the geometries of aggregates and to compute some of their geometric parameters such as the projected area. Based on in situ observations, aggregates are defined as clusters of hexagonal plates with a chain-like overall shape. An aggregate model is developed with 10 ensemble members,
each consisting of between 4-12 hexagonal plates. The scattering properties of an individual aggregate ice particle are computed using the discrete dipole approximation or an Improved Geometric Optics Method, depending upon the size parameter. The aggregate model provides an accurate and computationally efficient way to represent all aggregates occurring within ice clouds.
We developed an algorithm to determine an appropriate ice cloud model for application to satellite-based retrieval of ice cloud properties. Collocated Moderate Resolution Imaging Spectroradiometer and Multi-angle Imaging SpectroRadiometer (MISR) data are used to retrieve the optical thicknesses of ice clouds as a function of
scattering angle in the nine MISR viewing directions. The difference between cloud optical thickness and its averaged value over the nine viewing angles can be used to
validate the ice cloud models. Using the data obtained on 2 July 2009, an appropriate ice cloud model is determined. With the presence of all the uncertainties in the current operational satellite-based retrievals of ice cloud properties, this ice cloud model has excellent performance in terms of consistency in cloud property retrievals with the nine MISR viewing angles.
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Zimin, Denys [Verfasser]. "Synergetic effects of polymer-surfactant mixtures on solid-liquid interfaces / vorgelegt von Denys Zimin." 2004. http://d-nb.info/970165064/34.
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"Investigation of the synergetic antioxidant effects of gold nanoparticles capped with aqueous soybean extracts." Thesis, 2015. http://hdl.handle.net/10210/13849.
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Lin, Shih-che, and 林世哲. "A synergetic model for operant behavior under fixed-interval and mixed fixed-interval reinforcement schedules." Thesis, 2008. http://ndltd.ncl.edu.tw/handle/17870896404094925172.
Full textAbstract:
碩士國立中正大學
心理學所
96
Issues about operant behavior of organisms have been studied for many years. Researchers used temporal operant methods (e.g. FI, VI, mixed-FI) to investigate interval timing and behavior variations in animals. For example, in fixed-interval (FI) reinforcement schedule organisms exhibit a temporal control of responding. The response rate increases as a function of time elapsed since the delivery of the previous reinforcement. This type of responding dynamics can be seen in a cumulative record as a concave-upward curve, which is called the “scalloped-curve”. Several theoretical timing models, e.g. the SET (Gibbon, 1977), the BeT (Killen and Fetterman, 1988), and the LeT (Machado, 1997), have been developed to describe the temporal patterns of behaviors. However, these models merely simulated the averaged responses acquired across multiple trials in one session. They didn’t touch the issue about the real time dynamics of the lever-pressing responses in reinforcement schedules. In the present study, a nonlinear dynamic model based on the synergetic concepts is proposed. The synergetic model is applied to simulate not only the averaged response numbers in the FI and mixed-FI schedules, but also produce some typical types of behavioral dynamics seen in a kind of phase space reconstruction, the extended return map (ERM). The simulation of the synergetic model is compared with the performance of the LeT. It is found that the synergetic model not only can reproduce the averaged response curve in both schedules, but also is capable of simulating the dynamics of FI and mixed-FI responding revealed in the ERM-patterns.