Dissertations / Theses on the topic 'Multi-concept'
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Jones, Martin. "A novel concept of series connected multi-phase, multi-motor drive systems." Thesis, Liverpool John Moores University, 2005. http://researchonline.ljmu.ac.uk/5654/.
Full textBlattmann, Marc [Verfasser], Hans [Akademischer Betreuer] Zappe, Çağlar [Akademischer Betreuer] Ataman, and Andreas [Akademischer Betreuer] Seifert. "Concept for a multi-modal endoscopic imaging system." Freiburg : Universität, 2017. http://d-nb.info/1148929363/34.
Full textKotze, Johan. "A concept model for a multi-fingered prosthetic hand." Master's thesis, University of Cape Town, 1997. http://hdl.handle.net/11427/9500.
Full textThe various attempts by individuals to replace the hand has led to some ingenious and practical designs, but if compared to the real hand these designs are still light years behind. Till recently the most functional prostheses developed were body powered because of the simple, light weight designs. The designs for these hands have not changed must in the last few decades indicating that the design has reached its functional limit. This and the latest technology have initiated designers ' renewed interest in externally powered prostheses. Existing externally powered hands only have one degree of freedom which limits the function of hands considerably whereas practical multi-fingered hands would provide a new dimension to the functionality of prosthetic hands. For this project a concept model for a multi-fingered prosthetic hand was developed using Lego as design medium. The objective was to develop and test mechanisms as well as control strategies which can be used in a real prosthetic hand. A proper study of the human hand was done to determine its basic anatomy as well as its functioning. An extensive literature study on prosthetic and robotic hands was also done to evaluate existing designs and determine the level of existing technology. Special emphasis was laid on the anatomical design of the human hand which led to a model with a unique design. The model incorporates a tendon driven finger mechanism instead of the traditional linkage systems. This design provides an adaptable closing finger trajectory providing better grip. The model also provide actuation to all five fingers contrary to the three fingers of existing hands. This is achieved by a simple differential mechanism driving the last three fingers semi-independently with one actuator. The model also provides abduction of all fingers as well as opposition of the thumb improving the hands versatility. The hand is controlled using a personal computer and two interface boxes. Software was developed in Visual Basic to provide the user with a control analogue to that of a real myoelectric prosthesis.
Fabbris, Olivier. "Optimisation multi-physique et multi-critère des coeurs de RNR-Na : application au concept CFV." Thesis, Grenoble, 2014. http://www.theses.fr/2014GRENI055/document.
Full textNuclear reactor core design is a highly multidisciplinary task where neutronics, thermal-hydraulics, fuel thermo-mechanics and fuel cycle are involved. The problem is moreover multi-objective (several performances) and highly dimensional (several tens of design parameters).As the reference deterministic calculation codes for core characterization require important computing resources, the classical design method is not well suited to investigate and optimize new innovative core concepts. To cope with these difficulties, a new methodology has been developed in this thesis. Our work is based on the development and validation of simplified neutronics and thermal-hydraulics calculation schemes allowing the full characterization of Sodium-cooled Fast Reactor core regarding both neutronics performances and behavior during thermal hydraulic dimensioning transients.The developed methodology uses surrogate models (or metamodels) able to replace the neutronics and thermal-hydraulics calculation chain. Advanced mathematical methods for the design of experiment, building and validation of metamodels allows substituting this calculation chain by regression models with high prediction capabilities.The methodology is applied on a very large design space to a challenging core called CFV (French acronym for low void effect core) with a large gain on the sodium void effect. Global sensitivity analysis leads to identify the significant design parameters on the core design and its behavior during unprotected transient which can lead to severe accidents. Multi-objective optimizations lead to alternative core configurations with significantly improved performances. Validation results demonstrate the relevance of the methodology at the predesign stage of a Sodium-cooled Fast Reactor core
Ho, Ghee Wee. "The concept of captaincy in a military multi-aircrew environment." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 1999. http://www.collectionscanada.ca/obj/s4/f2/dsk1/tape10/PQDD_0002/NQ43426.pdf.
Full textKavurucu, Yusuf. "An Ilp-based Concept Discovery System For Multi-relational Data Mining." Phd thesis, METU, 2009. http://etd.lib.metu.edu.tr/upload/12610688/index.pdf.
Full textDonovan, Kenneth. "Askesis : a multi-disciplinary study investigating a first century Christian concept." Thesis, Cardiff University, 2011. http://orca.cf.ac.uk/54477/.
Full textAl, Alshaikh Modhi. "Dynamic multi-concept user profile modelling in research paper recommender systems." Thesis, University of Brighton, 2018. https://research.brighton.ac.uk/en/studentTheses/8860a703-0d0b-49ef-aa00-ecece40d21d8.
Full textCanhilal, Sukriye Kubra. "Enhancing the understanding of expatriate adjustment: concept and multi-sample empirical support." Doctoral thesis, Universitat Ramon Llull, 2014. http://hdl.handle.net/10803/283189.
Full textA medida que las organizaciones, independientemente de su tamaño, buscan más oportunidades para convertirse en multinacionales, la importancia de los expatriados se incrementa. Aunque la expatriación no es un concepto nuevo, la identidad de los expatriados, tal como es conocida, se está ajustando a las nuevas demandas de las nuevas generaciones. Tras la II Guerra Mundial, se inició el fenómeno de la expatriación cuando las empresas empezaron a enviar a sus empleados a trabajar en sus filiales en el extranjero. Sin embargo, con la nueva generación ha surgido un nuevo tipo de expatriados: los que han decidido serlo por sí mismos, eso es, personas que han optado por ir a trabajar en el extranjero sin el apoyo de una organización matriz ubicada en sus respectivos países de origen. Esta tesis busca comprender las diferencias entre los expatriados de las empresas y los expatriados por decisión propia, presentando tres papers que toman en consideración distintas muestras y diversos métodos. Cada capítulo tiene sus propias conclusiones y limitaciones, y en el capítulo final de la tesis se resumen, comparan y contrastan las conclusiones de cada uno de estos papers. Las conclusiones generales revelan que los expatriados por decisión propia y los expatriados de las empresas parecen diferir en la forma de entender el “éxito”, así como en sus motivaciones por marchar al extranjero, aunque ambos afrontan unas dificultades similares en cuando al idioma y la conciliación con su pareja. Estas conclusiones son ilustradas con citas de los entrevistados.
A mesura que les organitzacions, independentment de la seva grandària, cerquen oportunitats per convertir-se en multinacionals, la importància dels expatriats s’incrementa. I, si bé l’expatriació no és un concepte nou, la identitat dels expatriats, tal com era coneguda fins ara, s’està ajustant a les noves demandes de les noves generacions. Després de la II Guerra Mundial, es va iniciar el fenomen de l’expatriació quan les empreses van començar a enviar els seus empleats a treballar a les filials que tenien a l’estranger. Tanmateix, amb la nova generació ha sorgit un nou tipus d’expatriats: els que han decidit ser-ho per si mateixos, és a dir, persones que han optat per anar a treballar a l’estranger sense el suport d’una organització matriu situada als seus països d’origen respectius. Aquesta tesi cerca comprendre les diferències entre els expatriats de les empreses i els expatriats per decisió pròpia, presentant tres papers que prenen en consideració diferents mostres i diversos mètodes. Cada capítol té les seves pròpies conclusions i limitacions, i al capítol final de la tesi es resumeixen, es comparen i es contrasten les conclusions de cada un dels papers. Les conclusions generals revelen que els expatriats per decisió pròpia i els expatriats de les empreses sembla que difereixen en la forma d’entendre l’“èxit”, com també en les seves motivacions per anar a l’estranger, si bé tant els uns com els altres afronten unes dificultats semblants pel que fa a l’idioma i a la conciliació amb la parella. Aquestes conclusions són il•lustrades amb citacions dels entrevistats.
Bouzaouache, Riadh. "Importance du concept "made-in" dans un contexte d’évaluation multi-attributs/multi-produits : effet modérateur des variables de personnalité." Mémoire, Université de Sherbrooke, 1990. http://hdl.handle.net/11143/9040.
Full textSeeger, J., and K. Wolf. "Multi-objective design of complex aircraft structures using evolutionary algorithms." Sage, 2011. https://publish.fid-move.qucosa.de/id/qucosa%3A38441.
Full textChaturvedula, Sri Ramya. "Designing multi-core architecture using folded torus concept to minimize the number of switches." Thesis, Wichita State University, 2011. http://hdl.handle.net/10057/5163.
Full textThesis (M.S.)--Wichita State University, College of Engineering, Dept. of Electrical Engineering and Computer Science.
Byun, Byungki. "On discriminative semi-supervised incremental learning with a multi-view perspective for image concept modeling." Thesis, Georgia Institute of Technology, 2012. http://hdl.handle.net/1853/43597.
Full textMunsie, Steven D. "Multi-dimensional self-concept in junior high school students : issues of gender, intelligence and program effects." Thesis, McGill University, 1992. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=56766.
Full textSubjects were 85 students in grades 7 and 8 attending a large comprehensive high school, 40 of whom participated in a specialized Talented and Gifted (TAG) program. The remaining 45 were drawn from the regular school population and constituted a comparison group. Measurements included the Piers-Harris Childrens' Self-Concept scale and the Otis-Lennon Mental Ability Test.
Results indicated no significant differences between groups on measures of general or social self-concept. On measures of academic self-concept, TAG students scored significantly higher than students from the regular program. With regard to gender effects, no significant differences emerged between males and females on measures of self-concept. Finally, no significant differences were determined on measures of self-concept between TAG participants scoring higher on measures of IQ and achievement and those scoring lower. Educational implications and suggestions for future research are discussed.
Abefelt, Fredrik. "Synchronized audio playback over WIFI and Ethernet : A proof of concept multi-room audio playback system." Thesis, KTH, Skolan för informations- och kommunikationsteknik (ICT), 2015. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-187345.
Full textHuvuduppgift med detta examensarbete har varit att utveckla ett synkroniserat ljuduppspelningssystem, vilket kan spela upp ljud samtidigt på flera enheter, enheterna är anslutna med antingen med Wi-Fi eller Ethernet. Två olika tillvägagångsätt har undersökts för att utveckla systemet, ett redan färdigt system och ett system baserat på ett ramverk med öppen källkod. Det utvecklade systemet kan utföra synkroniserad uppspelning på fem olika enheter och kan använda Blueetooth enheter och olika mediaspelare som ljudkälla.
Rocereto, Joseph F. Suri Rajneesh. "Consumer self-concept and retail store loyalty : the effects of consumer self-concept on consumer attitude and shopping behavior among brand-specific and multi-brand retail stores /." Philadelphia, Pa. : Drexel University, 2007. http://hdl.handle.net/1860/2521.
Full textGilkey, Craig M. "Proof of concept integration of a single-level service-oriented architecture into a multi-domain secure environment." Thesis, Monterey, Calif. : Naval Postgraduate School, 2008. http://bosun.nps.edu/uhtbin/hyperion-image.exe/08Mar%5FGilkey.pdf.
Full textThesis Advisor(s): Irvine, Cynthia E. "March 2008." Description based on title screen as viewed on May 1, 2008. Includes bibliographical references (p. 129-132). Also available in print.
Oelker, Anne [Verfasser], Janos [Akademischer Betreuer] Urai, and Gioacchino [Akademischer Betreuer] Viggiani. "Deformation properties of Boom Clay : Implementation of a multi-scale concept / Anne Oelker ; Janos Urai, Gioacchino Viggiani." Aachen : Universitätsbibliothek der RWTH Aachen, 2019. http://d-nb.info/1220729086/34.
Full textRiemer, Diana [Verfasser]. "Multi-aspect full-system server model and optimization concept as a simulation-based approach (MFSMOS) / Diana Riemer." Paderborn : Universitätsbibliothek, 2018. http://d-nb.info/1160301271/34.
Full textFrancisco, sousa alves Luciano. "Series-connected SiC-MOSFETs : A Novel Multi-Step Packaging Concept and New Gate Drive Power Supply Configurations." Thesis, Université Grenoble Alpes, 2020. http://www.theses.fr/2020GRALT050.
Full textThis work investigates new gate drive power supply configurations and a novel multi-steppackaging concept in order to improve the performance of series-connected SiC-MOSFETs. The new gate drive configurations are proposed in order to reduce noise currents that circulate in the control part of the electrical system. Furthermore, a new gate drive power supply is proposed to increase the dv/dt of the switching cell. These improvements, i.e., noise current reduction and dv/dt boosting, are achieved by modifying the impedance of the gate drive circuitry. The novel multi-step packaging concept is proposed in order to improve the voltage sharing performance. The proposed package geometry considers optimal dielectric isolation for each device leading to a multi-step geometry. It has a significant impact on the parasitic capacitances introduced by the packaging structure that are responsible for voltageunbalances. The new gate driver configurations and the proposed multi-step packaging concepts are introduced and analysed thanks to equivalent models and time domain simulations. Then, experimental set-ups are performed to confirm that the proposed concepts are better than traditional ones in terms of voltage balancing, switching speed and conducted EMI reduction
Tumati, Saini. "A Combined Approach to Handle Multi-class Imbalanced Data and to Adapt Concept Drifts using Machine Learning." University of Cincinnati / OhioLINK, 2021. http://rave.ohiolink.edu/etdc/view?acc_num=ucin1623240328088387.
Full textTroendly, Gregory M., Sheng S. Chen, William G. Nickum, and Michael L. Forman. "Embedded Parallel Processing for Ground System Process Control." International Foundation for Telemetering, 1995. http://hdl.handle.net/10150/611599.
Full textEmbedded parallel processing provides unique advantages over sequential and symmetrical processing architectures. During the past decade, the architecture of ground control systems has evolved from utilizing sequential embedded processors to modular parallel, distributed, and/or symmetrical processing. The concept of utilizing embedded parallel processing exhibits key features such as modularity, flexibility, scalability, host independence, non-contention of host resources, and no requirement for an operating system. These key features provide the performance, reliability and efficiency while at the same time lowering costs. Proper utilization of embedded parallel processing on a host computer can provide fault tolerance and can greatly reduce the costs and the requirement of utilizing high-end workstations to perform the same level of real-time processing and computationally intensive tasks.
Preston, Christina. "Gaining insight into educators' understanding of digital technologies : three models for the analysis of multi-dimensional concept maps." Thesis, University College London (University of London), 2011. http://discovery.ucl.ac.uk/10019964/.
Full textThompson, Carl Anthony. "Quality : a multi-method exploration of the social construction of a contested concept in the National Health Service." Thesis, University of York, 1998. http://etheses.whiterose.ac.uk/13991/.
Full textVan, Wynen Susan Elaine. "A Journey of Missional Intent : Organizational Strategy in the Context of God’s Mission." Thesis, University of Pretoria, 2001. http://hdl.handle.net/2263/78502.
Full textThesis (PhD)--University of Pretoria, 2020.
Biblical and Religious Studies
PhD
Unrestricted
Mohamad, Radziah. "Unity in diversity : an exploration of the suports concept as a design approach to housing in multi-ethnic Malaysia." Thesis, Massachusetts Institute of Technology, 1992. http://hdl.handle.net/1721.1/68740.
Full textSchaffner, Michael Andrew. "Designing systems for many possible futures : the RSC-based method for affordable concept selection (RMACS), with multi-era analysis." Thesis, Massachusetts Institute of Technology, 2014. http://hdl.handle.net/1721.1/90796.
Full textCataloged from PDF version of thesis.
Includes bibliographical references (pages 175-178).
The current downward trend in funding for U.S. defense systems seems to be on a collision course with the state of the practice in systems engineering, which typically results in the increased pace and scale of capabilities and resultantly increased cost of complex national defense systems. Recent advances in the state of the art in systems engineering methodology can be leveraged to address this growing challenge. The present work leverages advanced constructs and methods for early-phase conceptual design of complex systems, when committed costs are still low and management influence is still high. First, a literature review is presented of the topics relevant to this work, including approaches to the design of affordable systems, assumptions and methods of exploratory modeling, and enabling techniques to help mitigate the computational challenges involved. The types, purposes, and limits of early-phase, exploratory models are then elucidated. The RSC-based Method for Affordable Concept Selection (RMACS) is described, which comprises nine processes in the three main thrusts of information gathering, evaluation, and analysis. The method is then applied to a naval ship case example, described as the Next-Generation Combat Ship, with representational information outputs and discussions of affordability with respect to each process. The ninth process, Multi-Era Analysis (MERA), is introduced and explicated, including required and optional informational components, temporal and change-related considerations, required and optional activities involved, and the potential types of outputs from the process. The MERA process is then applied to a naval ship case example similar to that of the RMACS application, but with discrete change options added to enable a tradespace network. The seven activities of the MERA process are demonstrated, with the salient outputs of each given and discussed. Additional thoughts are presented on MERA and RMACS, and 8 distinct areas are identified for further research in the MERA process, along with a brief description of the directions that such research might take. It is concluded that the affordability of complex systems can be better enabled through a conceptual design method that incorporates MERA as well as metrics such as Multi-Attribute Expense, Max Expense, and Expense Stability. It is also found that affordability of changeable systems can be better enabled through the use of existing path-planning algorithms in efficient evaluation and analysis of long-term strategies. Finally, it is found that MERA enables the identification and analysis of path-dependent considerations related to designs, epochs, strategies, and change options, in many possible futures.
by Michael Andrew Schaffner.
S.M.
Curry, Dion. "Multi-level governance frameworks in British Columbia and Scotland, or how I learned to stop worrying and love the concept." Thesis, University of Sheffield, 2011. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.555891.
Full textSakellariou, Evy. "Front End and New Product Concept Development: An insider action research study of FMCG products in a multi-national organization." Thesis, University of Surrey, 2008. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.502510.
Full textRautiainen, M. (Mika). "Content-based search and browsing in semantic multimedia retrieval." Doctoral thesis, University of Oulu, 2006. http://urn.fi/urn:isbn:9514283007.
Full textDiBiasio, Christopher M. (Christopher Michael). "Concept synthesis and design optimization of meso-scale, multi-degree-of-freedom precision flexure motion systems with integrated strain-based sensors." Thesis, Massachusetts Institute of Technology, 2010. http://hdl.handle.net/1721.1/61518.
Full textThis electronic version was submitted by the student author. The certified thesis is available in the Institute Archives and Special Collections.
Cataloged from student-submitted PDF version of thesis.
Includes bibliographical references (p. 171-178).
The purpose of this research was to generate the knowledge required to 1) identify where and how to best place strain-based sensors in multi-degree-of-freedom (MDOF) flexure systems and 2) design a flexure system with optimal topology/size/shape for precision equipment and instrumentation. The success of many application areas (e.g. probe-based nanomanufacturing) hinges on the ability to design and realize low-cost, high-performance MDOF nanopositioners. The repeatability and accuracy of precision flexure-based instruments depends upon the performance of the flexure mechanism (e.g. bearings, actuators, and structural elements) and a metrology system (e.g. sensors). In meso-scale MDOF nanopositioners the sensing system must be integrated into the structure of the nanopositioner. The only viable candidate for small-scale, low-cost sensing is strain-based sensors; specifically piezoresistive sensors. Strain-based sensing introduces strong coupling and competition between the metrology and mechanical subsystems because these subsystems share a load path. Traditional tools for flexure system and compliant mechanism synthesis are not capable of simultaneously optimizing the mechanical and sensing subsystems. The building block synthesis approach developed in this work is the only tool capable of designing compliant mechanisms with integrated strain based sensing. Building block modeling allows for rapid synthesis and vetting of concepts. This approach also allows the designer to check concept feasibility, identify performance limits and tradeoffs, and obtain 1st order estimates of beam geometry. In short, this enables one to find an optimal design and set first order design parameters. The utility of the preceding is demonstrated via a case study. A meso-scale 6-DOF nanopositioner was designed via the building block synthesis approach. Polysilicon piezoresistors were surface micromachined onto a microfabricated silicon nanopositioner. The nanopositioner was actuated with moving magnet Lorentz force actuators. The final prototype costs less than $300 US and was found to have 10's of [mu]m range, nm-level resolution, and a 100 Hz 1st mode. The accuracy of the sensing system as determined by existing metrology equipment is better than 17% in-plane and better than 30% out-of-plane.
by Christopher M. DiBiasio.
Ph.D.
Costin-Weiterschan, Saskia, and Chrysoula Matiou. "Value Stream in the Reverse Supply Chain : Case Study of the Second-Hand Concept of a Swedish Multi-Brand Fashion Retailer." Thesis, Högskolan i Borås, Akademin för textil, teknik och ekonomi, 2017. http://urn.kb.se/resolve?urn=urn:nbn:se:hb:diva-12584.
Full textOellig, Claudia [Verfasser], and Wolfgang [Akademischer Betreuer] Schwack. "High-throughput planar solid phase extraction : a new clean-up concept in multi-residue analysis of pesticides / Claudia Oellig. Betreuer: Wolfgang Schwack." Hohenheim : Kommunikations-, Informations- und Medienzentrum der Universität Hohenheim, 2014. http://d-nb.info/1058399942/34.
Full textBaldwin, Fern S. "Future Depression Associated with Developmental Trajectories of Global Self-worth and Multi-dimensional Self-concept in Low-income Urban African American Adolescents." Thesis, The George Washington University, 2017. http://pqdtopen.proquest.com/#viewpdf?dispub=10254720.
Full textSelf-worth is commonly used as a barometer for psychological well-being in adolescence. As low-income urban African American youth are often exposed to contexts that may undervalue their worth (e.g., racial discrimination), positive self-perception may be especially crucial for their well-being. The current study focused on the development of global self-worth and two self-concept domains (i.e., social acceptance and physical appearance) within a large sample of African American adolescents. Analyses sought to: (a) identify classes of adolescents who demonstrate different trajectory classes of self-worth and domain-specific self-concept; (b) examine if gender predicts class membership; and (c) examine links between class membership and depression.
Participants were a community sample of 610 urban and predominantly low income African American adolescents who reported their global self-worth, perceived social acceptance and physical appearance from grade 6 through 12. Depressive symptoms were reported in the year following grade 12. Growth mixture modeling was used to identify latent classes of children who showed different patterns of change in global self-worth and domain-specific self-concepts from grade 6 through 12. Additional analyses explored whether gender predicted class membership, and if class membership predicted depressive symptoms in the year following grade 12.
Analyses indicated that a one-class solution fit best for global self-worth: overall, this sample showed high and increasing development of global self-worth. However, there was heterogeneity in the development of self-concept related to social acceptance and physical appearance, each demonstrating a two-class solution. For both domains, the majority of adolescents placed in a high and increasing trajectory class. A second group of adolescents demonstrated moderate and stable growth of social acceptance and physical appearance. Youth placed in the high and increasing physical appearance trajectory class were more likely to be male. Symptoms of depression were significantly higher in the year following grade 12 in the trajectory class of social acceptance marked by lower self-perception ratings. Results shed light on specific patterns amongst African American adolescents that may require intervention, and provide a foundation for examination of determinants and outcomes of domain-specific self-perceived competence.
Jeanmougin, Martin. "Relations entre espèces et habitats : de la théorie aux enjeux appliqués." Thesis, Paris, Muséum national d'histoire naturelle, 2017. http://www.theses.fr/2017MNHN0016/document.
Full textThe loss of biodiversity is largely acknowledged by the scientific community but also by the public and politicians. Most research on biodiversity loss is focused on climate change effects, and neglects the main factor of biodiversity loss: habitat destruction. The aim of this thesis is to study species-habitats relationships with a particular focus on the different components of these relationships. In a first part, the thesis deals with the history and the evolution of the concept of habitat in ecology. Particularly, it highlights a complex construction of this concept. For instance, the analysis shows a dichotomy around the definition of the concept of habitat with on one hand, a species-centered approach and on the other hand, a community-centered approach. These definitions are still used nowadays by the different actors of conservation, from scientists to politicians, but with different degrees of importance. Then, through the prism of landscape ecology, the thesis is interested in spatial scale issues via a study of arthropods species distribution in French landscapes. Results show that the spatial scales of species responses to landscapes measures are highly variable. This result holds true whatever the representation of landscape used in the analysis. However, theory would predict some consistencies in spatial scales of response, for example in relation to ecological traits of species. Hence, the spatial scale of relationship between a species and its landscape, which is considered as the scale of perception and interaction of the species with its environment, seems difficult to characterize using usual methodology developed in landscape ecology. Species-habitats relationships can be quantified using specialization measurement. In the next part of the thesis, we try to understand how specialist species are spread along a continuous gradient of habitat and in particular, the role of heterogeneous environments in driving observed patterns of specialization. In this theoretical context, the hypothesis of complementation, which states that particular species need some environmental heterogeneity to strive, cannot be verified. Even if some species prefer heterogeneous landscape, they cannot be classified as specialists. These species seems to be generalists that are excluded from more homogeneous landscape due to competition rather than real specialists that are more often found in these landscapes. These results shed a new light on rules of assemblage of species communities, particularly along a continuous gradient of habitat.Finally, in a last part, the importance of the concept of habitat in conservation public policies is studied. An evaluation of the “habitat” part of the European Habitats Directive is proposed. Different criteria, related to the application, construction, legitimacy and outcomes of the directive were used to evaluate the policy. Through some concrete examples and an extensive literature analysis, this work allows identifying important knowledge gaps in the directive that imped evaluation criteria. Results show a discrepancy between scientific aspects and their application in the directive, questioning the opportunity to use the habitat level to answer to conservation issues. To conclude, this thesis, focused on the concept of habitat, allows identifying important theoretical and applied knowledge gaps that imped a better understanding of species-habitats relationships. This work offers new perspectives and challenges the way we usually think, as scientists, these relationships
Fiener, Peter [Verfasser]. "Concept and Effects of a Multi-Purpose Grassed Waterway : Long-Term Measuring and Mathematical Modeling of Runoff Reduction and Sediment Trapping / Peter Fiener." Aachen : Shaker, 2004. http://d-nb.info/1172609934/34.
Full textGeorget, Elodie. "Preuve de concept d'une liaison radio mer-air d'une balise autonome de petites dimensions - Projet BELOCOPA : conception d'antennes multi-bande sur substrat souple." Thesis, Aix-Marseille, 2014. http://www.theses.fr/2014AIXM4728.
Full textThis thesis is part of the BELOCOPA project FUI-2011 (BELOCOPA means Ejected Buoy to LOcalize and COllect the data of a crashed plane in sea). It was about designing and developing an on-board, removable and autonomous, equipment to localize quickly and precisely an aircraft crashed in the sea, and to collect by telecommunication the main flight data from a patrol boat. The aim of this thesis, in the Fresnel Institute, was the study and the realization of the main antenna of the beacon. This antenna had to be very flexible with small dimensions to be folded and integrated in a reduced space of the beacon, and had to be strong during its deployment after the ejection of the plane. The aim of the first part of the work was to characterize in term of permittivity the different dielectric materials included in the composition of the beacon, namely the substrates of the antennas and the radome. The second part of the thesis was on the design of multi-band antennas working in dipolar modes on the frequency plan of the specification of the project. The characteristic of these antennas is to be very flexible. This flexibility was obtained realizing metal radiating pattern on a polyamide material. Several patterns have been studied and tested to get the final antenna with meander working at three different resonance frequencies. Following this study, a prototype of the final antenna integrated in the radome is the last link of the prototype of the distress beacon BELOCOPA
Himbele, John. "Contribution à l'étude d'un insert dipolaire supraconducteur à haute température critique pour accélérateur des particules, utilisent le concept de câble multi-rubans torsadé." Thesis, Université Grenoble Alpes (ComUE), 2016. http://www.theses.fr/2016GREAT108/document.
Full textThis Ph.D. deals with a high Tc superconducting (HTS) dipole insert using a twisted stacked cable for a particle accelerator in the framework of EuCARD2 project in CERN. The HTS dipole insert is the only possibility today to go above 16 T for the future high-energy particle accelerator. Two specifications of these HTS insert are large operating currents (> 10 kA) and high background fields (> 13 T) leading to severe operating conditions. To meet these expectations, a first Twisted Stacked/ Block-type HTS insert is proposed based on analytical, numerical and experimental approaches. The works are mainly classified into dipole insert design and twisted stacked cable design. This Ph.D. ends with the best solution for Twisted Stacked/ Block-type HTS insert using partially-insulated cable
Nguyen, Viet Dung [Verfasser], and András [Akademischer Betreuer] Bárdossy. "Multi-objective automatic calibration of hydrodynamic models - development of the concept and an application in the Mekong Delta / Nguyen Viet Dung. Betreuer: András Bárdossy." Stuttgart : Universitätsbibliothek der Universität Stuttgart, 2012. http://d-nb.info/1019328533/34.
Full textNguyen, Viet-Dung [Verfasser], and András [Akademischer Betreuer] Bárdossy. "Multi-objective automatic calibration of hydrodynamic models - development of the concept and an application in the Mekong Delta / Nguyen Viet Dung. Betreuer: András Bárdossy." Stuttgart : Universitätsbibliothek der Universität Stuttgart, 2012. http://nbn-resolving.de/urn:nbn:de:bsz:93-opus-68318.
Full textPISTONI, CARLO. "Perché le persone si impegnano nell’azione collettiva? Uno studio multi-metodo per esplorare il punto di vista degli attivisti italiani." Doctoral thesis, Università Cattolica del Sacro Cuore, 2021. http://hdl.handle.net/10280/97411.
Full textThe literature studying why people engage in collective action shows two main limitations: 1) the use of a top-down, researcher-centered research approach and 2) the lack of active involvement of people from a participatory, co-constructed perspective. This shows the need to apply a bottom-up approach with the active involvement of activists. The present work is a concurrent multi-method qualitative research design in which two research methodologies were combined: constructivist Grounded Theory (Study 1) and Concept Mapping (Study 2), starting from the research question: what are the motivations that lead activists today to engage in collective action? Study 1 highlighted, through individual semi-structured interviews, the processual components that lead people to engage in collective action. Study 2, through a focus on the activist community and through a participatory approach, uncovered the motivations that lead activists to engage and how to incentivize this engagement. Results suggest how scholars and professionals can no longer study and work in the collective action context only from the individual acting in a group point of view, but instead should involve community work: in the context, in the associations and with people who are part of it.
Stumpf, Alexander [Verfasser], Stryk Oskar [Akademischer Betreuer] von, and Maren [Akademischer Betreuer] Bennewitz. "An Integrated Concept for Footstep Planning and Navigation for Different Types of Multi-Legged Robots in Challenging Environments / Alexander Stumpf ; Oskar von Stryk, Maren Bennewitz." Darmstadt : Universitäts- und Landesbibliothek, 2021. http://d-nb.info/1225865743/34.
Full textTABART, CHRISTIAN. "Un nouveau concept de radiometre micro-onde pour l'observation de la terre : analyse simultanee d'un ensemble d'empreintes au sol au moyen d'une antenne multi-faisceaux." Paris 6, 1991. http://www.theses.fr/1991PA066643.
Full textSchreinemachers, Pepijn. "The (ir)relevance of the crop yield gap concept to food security in developing countries : with an application of multi agent modeling to farming systems in Uganda /." Göttingen : Cuvillier, 2006. http://bvbr.bib-bvb.de:8991/F?func=service&doc_library=BVB01&doc_number=015865906&line_number=0001&func_code=DB_RECORDS&service_type=MEDIA.
Full textValenzuela-Del, Rio Jose Eugenio. "Bayesian adaptive sampling for discrete design alternatives in conceptual design." Diss., Georgia Institute of Technology, 2013. http://hdl.handle.net/1853/50263.
Full textRajnoha, Martin. "Fenomén emergencie v komplexných informačných systémoch." Master's thesis, Vysoká škola ekonomická v Praze, 2011. http://www.nusl.cz/ntk/nusl-81964.
Full textNica, Cristina. "Exploring sequential data with relational concept analysis." Thesis, Strasbourg, 2017. http://www.theses.fr/2017STRAD032/document.
Full textMany sequential pattern mining methods have been proposed to discover useful patterns that describe the analysed sequential data. Several of these works have focused on efficiently enumerating all closed partially-ordered patterns (cpo-patterns), that makes their evaluation a laboured task for experts since their number can be large. To address this issue, we propose a new approach, that is to directly extract multilevel cpo-patterns implicitly organised into a hierarchy. To this end, we devise an original method within the Relational Concept Analysis (RCA) framework, referred to as RCA-SEQ, that exploits the structure and properties of the lattices from the RCA output. RCA-SEQ spans five steps: the preprocessing of the raw data; the RCA-based exploration of the preprocessed data; the automatic extraction of a hierarchy of multilevel cpo-patterns by navigating the lattices from the RCA output; the selection of relevant multilevel cpo-patterns; the pattern evaluation done by experts
Nohava, Lena. "Concepts for Wearable Technology in MR : Lightweight Flexible Radio Frequency Coils and Optical Wireless Communication Flexible multi-turn multi-gap coaxial RF coils: design concept and implementation for Magnetic Resonance Imaging at 3 and 7 Tesla Perspectives in Wireless Radio Frequency Coil Development for Magnetic Resonance Imaging." Thesis, université Paris-Saclay, 2020. http://www.theses.fr/2020UPAST069.
Full textThis PhD thesis work was conducted at the BioMaps laboratory at the Université Paris-Saclay and the Center for Medical Physics and Biomedical Engineering (CMPBME) at the Medical University of Vienna.To improve diagnostic value in MRI, shorter acquisitions, more efficient patient handling and improved image quality are needed. Wearable technology with optimized hardware reduces weight, increases flexibility, and could be wireless, thereby improving sensitivity, comfort, safety, and usability.In this work, flexible self-resonant coaxial transmission line resonators were investigated. Coaxial coils with multiple turns and gaps enable size optimization depending on the target application. The design was first studied in silico. Numerous prototypes were constructed and their performance was tested on the bench and in 3 and 7 T MRI. Coaxial coils were shown to be robust against bending, have no SAR penalty and improve SNR and transmit efficiency when form-fitted.A review of wireless MR, associated hardware developments and data transmission technology is given.An optical wireless communication module for sensor data transmission was demonstrated experimentally.Wearable coaxial coils offer an attractive alternative to standard coils due to low weight and flexibility. With wireless motion sensors diagnostic value in e.g. breast, knee, or cardiac MRI could be increased
Cui, Licong. "Ontology-guided Health Information Extraction, Organization, and Exploration." Case Western Reserve University School of Graduate Studies / OhioLINK, 2014. http://rave.ohiolink.edu/etdc/view?acc_num=case1401709795.
Full textBramford, Sofie, and Jessica Sundström. "Köpcentrum - Ett framtida multikoncept : Varumärkesbyggande med hjälp av sinnen och upplevelser." Thesis, Linnéuniversitetet, Institutionen för marknadsföring (MF), 2014. http://urn.kb.se/resolve?urn=urn:nbn:se:lnu:diva-31869.
Full textShopping centers are not a new phenomenon; even ancient Rome had their shopping centers. Today, the market for shopping centers is larger than ever before and it is constantly growing. In the last couple of years a new competitor emerged on the market, e-commerce. It has been called a threat to shopping centers but could it also be a possibility? During our studies at Linnaeus University we have learned about sensory marketing, customer experiences and branding as a way of distinguishing oneself at the market. Therefore these subjects have become a focus of the thesis. Furthermore, since the establishing process for shopping centers are between six and seven years we have adopted a futuristic perspective. The purpose of the study is to examine and analyze the branding process, the importance of the senses and the competition of shopping centers. The research has a qualitative approach in order to create greater understanding of the subject. Six interviews were conducted with people with knowledge of the subject. The result of the study is mainly focused upon shopping centers becoming multi-concepts in the future, where everything from doctors to grocery stores and auto mechanics can be found.