Dissertations / Theses on the topic 'COPs'
Create a spot-on reference in APA, MLA, Chicago, Harvard, and other styles
Consult the top 50 dissertations / theses for your research on the topic 'COPs.'
Next to every source in the list of references, there is an 'Add to bibliography' button. Press on it, and we will generate automatically the bibliographic reference to the chosen work in the citation style you need: APA, MLA, Harvard, Chicago, Vancouver, etc.
You can also download the full text of the academic publication as pdf and read online its abstract whenever available in the metadata.
Browse dissertations / theses on a wide variety of disciplines and organise your bibliography correctly.
Rusch, Thomas, Patrick Mair, and Kurt Hornik. "COPS Cluster Optimized Proximity Scaling." WU Vienna University of Economics and Business, 2015. http://epub.wu.ac.at/4465/1/COPS.pdf.
Full textSeries: Discussion Paper Series / Center for Empirical Research Methods
Karle, Thomas. "Steuerung und Aktionsvisualisierung des CoPS-Stuttgart Teams." [S.l. : s.n.], 2000. http://www.bsz-bw.de/cgi-bin/xvms.cgi?SWB8862162.
Full textNathan, Lawrence Albert. "COPS for windows : a small-scale, networked, information system /." Thesis, Monterey, Calif. : Springfield, Va. : Naval Postgraduate School ; Available from National Technical Information Service, 1995. http://handle.dtic.mil/100.2/ADA303868.
Full textClarke, Nancy. "The effects of replacing cops and searchers with technology." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 1999. http://www.collectionscanada.ca/obj/s4/f2/dsk1/tape9/PQDD_0018/MQ49330.pdf.
Full textDeodhar, Abhijit Anant. "COPS: A Framework for Consumer Oriented Proportional share Scheduling." Thesis, Virginia Tech, 2007. http://hdl.handle.net/10919/33232.
Full textMaster of Science
Jouirou, Manel. "Les conditions de développement des communautés de pratique (COPS)." Paris 9, 2007. https://portail.bu.dauphine.fr/fileviewer/index.php?doc=2007PA090046.
Full textThe present study aims at providing support in understanding communities of practice (CoPs) development conditions. We decided to focus this study on communities of practice intentionally created. A qualitative research has been performed in order to confirm and enrich the literature review results. We identify factors influencing learning and sharing knowledge through communities of practice. We found that organizational, community, technological and individual aspects affect the development of these organizational forms. We also found that competition between communities of practice and other existing groups, the lack of human contact and “Top-Down” creation way are the most important factors which limit the development of these organizational forms. The identification of conditions under which a community of practice may be successful allows organization to understand the reasons of successful or unsuccessful communities of practice and how to develop them effectivel
Nadelmann, Ethan Avram. "Cops across borders : the internationalization of US criminal law enforcement /." University Park, Pa. : Pennsylvania State Univ. Press, 1993. http://www.gbv.de/dms/spk/sbb/recht/toc/278585531.pdf.
Full textMoellinger, Terry. ""There's A Man With A Gun Over There": Cops And The Counterculture." Thesis, University of North Texas, 2001. https://digital.library.unt.edu/ark:/67531/metadc3041/.
Full textGeraldi, Joana G. "Reconciling order and chaos in multi-project firms empirical studies on CoPS producers." Göttingen Sierke, 2008. http://d-nb.info/989236862/04.
Full textSkinns, Layla. "Cops, councils and crime and disorder : a critical review of three community safety partnerships." Thesis, University of Cambridge, 2005. https://www.repository.cam.ac.uk/handle/1810/226720.
Full textNygren, Clara. "On Meyniel's conjecture and the Zig-Zag Theorem : Cops and robbers on random graphs." Thesis, Umeå universitet, Institutionen för matematik och matematisk statistik, 2020. http://urn.kb.se/resolve?urn=urn:nbn:se:umu:diva-175951.
Full textGamboa, Nadia. "DDT, a historical review." Revista de Química, 2014. http://repositorio.pucp.edu.pe/index/handle/123456789/100129.
Full textDDT is closely linked to the twentieth century. Its production, use and marketing are now banned because it is a persistent organochlorine pollutant controlled by the Stockholm Convention.
Colbran, Marianne. "Watching the cops : a case study of production processes on television police drama "The Bill"." Thesis, London School of Economics and Political Science (University of London), 2011. http://etheses.lse.ac.uk/408/.
Full textLewis, Michael T. "Setting Cops Up for Failure: The Possible Implications of Police Accountability Through Body-worn Cameras." Youngstown State University / OhioLINK, 2020. http://rave.ohiolink.edu/etdc/view?acc_num=ysu1588957264650721.
Full textHaberman, Cory P. "COPS ON DOTS DOING WHAT? THE DIFFERENTIAL EFFECTS OF POLICE ENFORCEMENT ACTIONS IN HOT SPOTS." Diss., Temple University Libraries, 2015. http://cdm16002.contentdm.oclc.org/cdm/ref/collection/p245801coll10/id/338119.
Full textPh.D.
Although hot spots policing has become one of the most promising policing strategies, the empirical evidence on the effectiveness of hot spots policing does not suggest what police should be doing in crime hot spots. To date, police enforcement actions – pedestrian investigations, traffic enforcement, and arrests – still dominate American policing. Yet empirical studies of these actions have not: focused on micro-geographic areas, employed multiple measures of police enforcement actions, or empirically compared the effectiveness of different enforcement actions. Given these gaps in the literature, a mixed-methods study sought to answer four research questions. (1) Do four police enforcement actions focused on offenders or potential offenders reduce violent crime in hot spots? The four police enforcement actions examined were pedestrian investigations, traffic enforcement events, quality of life arrests, and violent crime arrests. (2) Are any one of these four police enforcement actions more effective than the others? (3) When police commanders allocate resources to crime hot spots, what do police commanders think they are doing? (4) What are police commanders’ rationales for what they do in crime hot spots? The first two questions were answered using official data from the Philadelphia Police Department. A purposive sample of 169 high crime street blocks and intersections was drawn and longitudinal data analyses examined the effects of police enforcement actions on monthly violent crime counts from 2009 to 2013 (n = 10,140). Wald Tests were used to test for the differential effectiveness of the four enforcement actions. Qualitative methods answered the remaining two research questions. Field observations of crime strategy meetings (May, 2014 to August, 2014) and interviews with police commanders (November, 2014 to February, 2015) were conducted. The quantitative results found total enforcement and pedestrian stop levels in the previous or same month linked to higher expected monthly violent crime counts. The positive effect of pedestrian stops was significantly larger than the effects of traffic enforcement or quality of life arrests. Despite the positive relationship between police enforcement and violent crime, the qualitative results provided insight into what police commanders thought they were doing in crime hot spots. Three themes emerged from the qualitative data: (1) “locking down” crime hot spots, (2) disrupting high risk offenders, and (3) educating potential victims. Police commanders rationalized these beliefs with four explanations of their effectiveness: (1) making offenders “think twice”, (2) denying potential offenders and victims certain places in order to reduce crime opportunities, (3) getting high risk offenders “off the street”, and (4) target hardening. Drawing on theorizing for how police enforcement actions might actually link to higher levels of crime (Grabosky, 1996) and methodological concerns raised by Taylor (2015), five possible explanations for the observed positive relationships among police enforcement actions and violent crime are provided: (1) an anticipatory effect, (2) over-deterrence, (3) escalation, (4) unintended enticement and self-fulfilling prophecies, and (5) temporal scaling. The anticipatory effect explanation centers on the police correctly anticipating outbreaks of violent crime but violent crime still not being reduced due to (1) dosage, (2) the overuse of enforcement, (3) police legitimacy, (4) temporal displacement or two components the study’s design (5) imprecise measurement and (6) lack of a proper counterfactual. Additionally, police enforcement actions may inadvertently reduce guardianship though over-deterrence, escalate competition among rival offenders, or inform potential offenders of crimes they could or “should” be committing. Finally, the study’s temporal scale (i.e., months) may not be fine enough to capture the actual cycling of how increased enforcement actions produce lower violent crime levels. The qualitative data are drawn upon to possibly support these explanations. Additionally, the pros and cons of police commanders’ perspectives on the use and effectiveness of enforcement actions are discussed in context of the criminological theory and crime control literatures. Finally, the results are discussed in terms of their implications for crime control theory and policy.
Temple University--Theses
Labbouz, Laurent. "Interactions entre le champ de vapeur d'eau et les systèmes précipitants." Phd thesis, Université Blaise Pascal - Clermont-Ferrand II, 2013. http://tel.archives-ouvertes.fr/tel-00869951.
Full textHall, Davin. "Cops and Robbers in Cincinnati: A Spatial Modeling Approach for Examining the Effects of Aggressive Policing." University of Cincinnati / OhioLINK, 2007. http://rave.ohiolink.edu/etdc/view?acc_num=ucin1186669531.
Full textSchwitalla, Thomas [Verfasser], and Volker [Akademischer Betreuer] Wulfmeyer. "Model evaluation and data assimilation impact studies in the framework of COPS / Thomas Schwitalla. Betreuer: Volker Wulfmeyer." Hohenheim : Kommunikations-, Informations- und Medienzentrum der Universität Hohenheim, 2012. http://d-nb.info/1027353991/34.
Full textFarias, Cardoso Pedro Klecius. "Lagestion de la QoS dans les réseaux cellulaires et sans fil." Paris 6, 2005. http://www.theses.fr/2005PA066052.
Full textGregory, Robyn V., and robyng@whest org au. "Corrupt cops, crooked docs, prevaricating pollies and 'mad radicals' : a history of abortion law reform in Victoria, 1959-1974." RMIT University. Social Science and Planning, 2004. http://adt.lib.rmit.edu.au/adt/public/adt-VIT20090925.104458.
Full textJohnson, Charles L. "Information sharing among cops progress & barriers witnessed in a case study of the H.I.T.S. program in Washington State /." Pullman, Wash. : Washington State University, 2008. http://www.dissertations.wsu.edu/Dissertations/Fall2008/c_johnson_112008.pdf.
Full textTitle from PDF title page (viewed on Jan. 22, 2009). "Department of Political Science." Includes bibliographical references (p. 267-280).
Gomez, David C. "SHOULD COPS BE SPIES? EVALUATING THE COLLECTION AND SHARING OF NATIONAL SECURITY INTELLIGENCE BY STATE, LOCAL AND TRIBAL LAW ENFORCEMENT." Monterey California. Naval Postgraduate School, 2013. http://hdl.handle.net/10945/32825.
Full textPresidential commissions, the Congress, and numerous national law enforcement groups have noted that the unfettered collection and sharing of intelligence is key to the prevention and mitigation of terrorism in the United States. The sharing of classified national security intelligence collected by the United States Intelligence Community with nonfederal law enforcement is, however, problematic, particularly since the tragic events of September 11, 2001. This thesis examines problems associated with the collection and sharing of classified national security intelligence with and by state, local and tribal law enforcement. It explores four policy options for the collection and sharing of national security intelligence, including Intelligence-led Policing, Nationwide Suspicious Activities Reporting Initiative; the FBIs Joint Terrorism Task Force; the National Counterterrorism Center/National Fusion Center; and the British Special Branch system. It recommends an American adaptation of the British Security Service and Metropolitan Police Service Special Branch model meant to improve the sharing of classified national security intelligence vital to the protection of the homeland. The recommendations in this thesis are designed to promote a debate on the utility and feasibility of classified national security intelligence collection within the homeland by state, local and tribal law enforcement.
Randall, Marcus Christian, and n/a. "A General Modelling System and Meta-Heuristic Based Solver for Combinatorial Optimisation Problems." Griffith University. School of Environmental and Applied Science, 1999. http://www4.gu.edu.au:8080/adt-root/public/adt-QGU20051116.120133.
Full textVieira, Sérgio Alexandre Braz. "Realização de uma arquitectura diffServ com configuração transparente de QOS." Master's thesis, FCT - UNL, 2009. http://hdl.handle.net/10362/1985.
Full textO foco desta dissertação é o estudo de métodos para a construção e configuração de redes com garantia de qualidade de serviço (QoS – “Quality of Service”) baseados na abordagem de serviços diferenciados (DiffServ). Pretende-se que a configuração da rede seja feita de forma transparente para o utilizador, aproveitando os pacotes de sinalização SIP (“Session Initiation Protocol”) utilizados em várias aplicações multimédia. A dissertação inclui também um enquadramento teórico, no qual se analisam o uso da Internet para serviços de voz (VoIP –“Voice over Internet Protocol”) e a estrutura do núcleo do sistema universal de telecomunicações móveis (UMTS – “Universal Mobile Telecommunications System”) para serviços multimédia (IMS –“Internet Protocol Multimedia Subsystem”). Ainda no âmbito da dissertação, foi elaborado um protótipo utilizando máquinas Linux que consiste numa rede DiffServ com dois tipos de nós: os encaminhadores de fronteira (ER – “Edge Routers”), que efectuam a negociação com os clientes (utilizando SIP); e os encaminhadores nucleares (CR – “Core Routers”), que distribuem os pacotes de acordo com a classe de serviço. A configuração dos CRs é feita dinamicamente em função da carga na rede, utilizando o protocolo COPS (“Common Open Policy Service”). A arquitectura realizada é compatível com os serviços VoIP e com o núcleo do UMTS para o serviço IMS.
Randall, Marcus. "A General Modelling System and Meta-Heuristic Based Solver for Combinatorial Optimisation Problems." Thesis, Griffith University, 1999. http://hdl.handle.net/10072/367399.
Full textThesis (PhD Doctorate)
Doctor of Philosophy (PhD)
School of Environmental and Applied Science
Science, Environment, Engineering and Technology
Full Text
Fehrlund, Christian, and Daniel Vujdinovic. "Sourcingstrategier för komplexa produkter och system." Thesis, KTH, Industriell ekonomi och organisation (Inst.), 2011. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-33647.
Full textThis thesis deals with how the sourcing process of complex systems in the Swedish Defence Materiel Administration (FMV) can be structured by examining the parameters that are important to consider when outsourcing a process. FMV's strategies are based on reducing internal operations and to place greater obligations on providers of system solutions to thereby reduce the need for internal resources. Therefore an important question to answer is whether FMV or a single supplier should take the role of a systems integrator. The report deals with the process of making a make-or-buy decision and when and why it is justified to assign responsibility for systems to a single supplier. McIvors model for outsourcing is used to answer the question of how FMV can make the decision regarding make-or-buy by applying the model to three current projects. The strategic supply wheel is then used to determine which parameters are important to satisfy both internally and externally when processes are outsourced, depending on the priorities of the project. The strategic supply wheel which is used to determine these parameters consists of five areas of interest to a strategic sourcing organization. The analysis of the theoretical model is made from the perspective of complex products and systems, but current theories of consumer goods can not always be related to military equipment without requiring some sort of modification. It turns out in the analysis that two of the model's five areas, organizational structure and knowledge and competence, have less of an impact on the make-or-buy decision. In the context of complex products and systems, it appears that strategic sourcing assumes that these two areas are tailored to their industry. It turns out that some parts of the strategic supply wheel can not be directly applied to the defence industry which differs greatly from the continuous purchasing of less complex materials. III The analysis shows that FMV to the greatest extent possible, should try to transfer system responsibility to the industry, as long as the market risk relating to the number of suppliers are low. Depending on how the individual projects' priorities between acquisition time and costs differs, different parameters have to be considered when outsourcing the role of systems integrator. It turns out that the strategic supply wheel has to be adapted for use at a state institution that acquires complex products and systems, and where orders are done intermittently and not continuously. Finally, McIvors outsourcing model is combined with the analysis of the strategic supply wheel to provide a structured approach to the sourcing process of complex products and systems that can be implemented at FMV.
Stewart, Ashley Shafii. "Development of a framework for the sustainability of professional CoPs in education, health and industry : a multiple discovery led case study approach." Thesis, University of the West of Scotland, 2014. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.627744.
Full textDUVET, LUDOVIC. "Instrumentation pour l'etude in-situ des atmospheres neutres et ionises planetaires et cometaires : idm (ion dynamics monitor) et cops (comet pressure sensor)." Paris 6, 2001. http://www.theses.fr/2001PA066296.
Full textGómez, Gutiérrez Anna. "Contaminants orgànics persistents a la conca mediterrània. El cas del delta de l'Ebre." Doctoral thesis, Universitat Autònoma de Barcelona, 2008. http://hdl.handle.net/10803/5811.
Full textEls resultats d'aquesta tesi s'han organitzat en tres capítols. En el primer d'ells s'estudia l'estat de la contaminació i la dinàmica dels COPs en el delta de l'Ebre. L'anàlisi de les mostres recollides (novembre de 2002 - octubre de 2003) mostrà com encara es produeixen aportacions no controlades de DDT al delta. Aquestes entrades poden ser la conseqüència de l'arrossegament de partícules enriquides mobilitzades des de diferents indrets de la conca i/o el resultat de les activitats agrícoles. La variabilitat estacional i geogràfica del lindà també indica l'existència d'aportacions recents. D'altra banda, les crescudes del riu provoquen un important augment de la descàrrega de COPs, bàsicament a la fase particulada, a causa de l'augment de l'escolament, la lixiviació, l'arrossegament de sòls i la remobilització dels sediments (ex. material dipositat als embassaments). Així, els períodes d'avinguda són claus en el còmput total de la descàrrega de COPs a la Mediterrània.
En el segon dels capítols s'estudià el perfil vertical estratificat del riu a la seva desembocadura com un exemple dels estuaris de falca salina desenvolupats a la Mediterrània. La falca salina a l'Ebre provoca un canvi en la dinàmica vertical de diferents variables fisicoquímiques, de la matèria orgànica i dels COPs. La floculació induïda pel canvi salí vertical provoca un augment de la quantitat de partícules en suspensió a la falca salina i la barreja de partícules de diversos orígens (orgànic i mineral). Aquest material es barreja a la vegada amb el material marí i les partícules suspeses pateixen una disminució general de les concentracions de COPs. Tanmateix, la falca salina actua com una zona de retenció dels COPs ja que el seu moviment lent i la baixa renovació de l'aigua fan que els contaminants es mantinguin a l'estuari. D'altra banda, tot i que la interfície vertical entre l'aigua dolça - falca salina juga un paper molt important en la transformació i l'acumulació de la matèria orgànica, no s'han detectat màxims molts evidents de COPs en aquesta zona.
Finalment, l'últim capítol presenta una visió més global i s'analitza l'abast i el risc ecològic de la utilització dels COPs a tota la conca mediterrània. Es realitzà una recopilació i valoració de la informació existent sobre COPs als sediments marins superficials com a indicadors i integradors del nivell de contaminació de la conca. Tot i les limitacions trobades en el recull d'informació (manca de dades per les costes est i sud de la conca, inexistència de procediments de mostreig i d'anàlisi normalitzats i manca de guies de qualitat ecotoxicològica) es van observar algunes tendències. Des del punt de vista geogràfic, s'ha demostrat com la contaminació per COPs als sediments mediterranis és un problema localment important en algunes zones urbanes/industrials, àrees de descàrrega de rius i zones semitancades (ports i llacs costaners). Malgrat això, les concentracions i el seu risc ecològic associat decreixen ràpidament en les zones de mar obert. Temporalment, tot i la gran variabilitat, s'observa una disminució general de les concentracions de COPs des dels anys setanta fins a l'actualitat.
Persistent Organic Pollutants (POPs) are compounds which have shown to be toxic, persistent, bioaccumulable and susceptible to atmospheric transport to remote areas where they have never been produced or used. This Thesis deals with the contamination of the Mediterranean Sea by a selection of POPs: hexachlorobenzene (HCB), hexachlorocyclohexanes (HCHs), dichlorodiphenyltrichloroethane (DDT) and its derivatives (DDE and DDD) and polychlorinated biphenyls (PCBs).
Results of this Thesis have been organized in three different chapters. The first chapter is focused on the contamination by POPs and their dynamics in the Ebro Delta. The analysis of collected samples (November 2002 - October 2003) have shown that even today, some DDT inputs are occurring in the Ebro Delta. These inputs can be related to the mobilization of enriched particles from several places in the basin and/or to agricultural activities. In the case of lindane, the seasonal and spatial variability also seems to indicate the existence of recent inputs of this pesticide in the area. On the other hand, the rises of the river flow leads to a significant increase in POP transport downstream, basically in the particulate phase, as a result of the increase in runoff, lixiviation, dragging of soils and the mobilization of sediments (ex. sediment stored in the dams). Flood episodes are thus contributing greatly to the total amounts of POPs annually discharged by the river into the Mediterranean.
In the second chapter, the stratified vertical profile of the river in the mouth was studied as an example of the salt wedge estuaries developed in the Mediterranean. The salt wedge in the Ebro produces a great change in the vertical profiles of various physicochemical variables, as well as the concentrations of organic matter and POPs. Flocculation caused by the salinity gradient leads to an increase of suspended organic matter in the salt wedge and the mixing of particles from different sources (organic and mineral). In the salt wedge, this material is also mixed with marine suspended particulate matter and the concentrations of POPs in the suspended solids decrease. However, the salt wedge entraps a large amount of POPs due to the low renewal levels and lack of movement and, thus, keeps the pollutants in the estuary. Although the interface between fresh and salty waters has a crucial role in the transformation and accumulation of organic matter, the results do not show important maxima of POPs in this region.
Finally, in the last chapter, from a more general standpoint, an assessment of POPs contamination and ecological risk in the Mediterranean was conducted, using the superficial sediments as indicators. In spite of all the limitations on gathering the existing information (lack of data in the eastern and southern Mediterranean, non-existence of standardised sampling and analytical procedures and ecotoxicological quality standards), some trends can be discerned. Geographically, it has been proved that POPs pollution in the Mediterranean sediments is a local problem and important in some urban and industrial locations, river discharge areas and semi-enclosed zones (harbours and coastal lagoons). In spite of this, the concentrations and their ecological risk are falling rapidly in open sea areas. Temporally, despite the great variability of data, a general decrease of POPs concentrations since the 1970s can be seen.
Nikoloski, Zoran. "Graph-theoretic Approach to Modeling Propagation and Control of Network Worms." Doctoral diss., University of Central Florida, 2005. http://digital.library.ucf.edu/cdm/ref/collection/ETD/id/3164.
Full textPh.D.
School of Computer Science
Engineering and Computer Science
Computer Science
Bishop, James. "Managing technical knowledge to enhance organisational best practice." Thesis, Loughborough University, 2009. https://dspace.lboro.ac.uk/2134/4657.
Full textAl, Azali Ralla. "Communities of practice, knowledge creation, and corporate sustainability : a study of Bahrain service industry." Thesis, Curtin University, 2010. http://hdl.handle.net/20.500.11937/237.
Full textPlanche, Céline. "Développement et évaluation d'un modèle tridimensionnel de nuage mixte à microphysique détaillée : application aux précipitations orographiques." Phd thesis, Université Blaise Pascal - Clermont-Ferrand II, 2011. http://tel.archives-ouvertes.fr/tel-00622980.
Full textFaubert, Joël. "Zombies and Survivors." Thesis, Université d'Ottawa / University of Ottawa, 2020. http://hdl.handle.net/10393/41077.
Full textSlagter-Jäger, Jacoba G. "CopA and CopT: The Perfect RNA Couple." Doctoral thesis, Uppsala University, Department of Cell and Molecular Biology, 2003. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-3465.
Full textAntisense RNAs regulate gene expression in many bacterial systems. The best characterized examples are from prokaryotic accessory elements such as phages, plasmids and transposons. Many of these antisense RNAs have been identified as plasmid copy number regulators where they regulate the replication frequency of the plasmid by negative feedback. Instability and fast binding kinetics is crucial for the regulatory efficiency of these antisense RNAs.
In this thesis, the interaction of the cis-encoded antisense RNA CopA with its target CopT was studied in detail using in vivo reporter gene fusion expression and different in vitro methods, such as surface plasmon resonance, fluorescence resonance energy transfer, and gel-shift assays.
Formation of inhibitory complexes differs from simple hybridization reactions between complementary strands. E.g., the binding pathway of CopA and CopT proceeds through a hierarchical order of steps. It initiates by reversible loop-loop contacts, resulting in a helix nucleus of two or three base pairs. This is followed by rapid unidirectional helix progression into the upper stems, resulting in a four-way helical junction structure. It had been suggested that the loop of CopT carries a putative U-turn, a structure first found in tRNA anticodon loops. We showed that this putative U-turn is one of the structural elements of CopA/CopT required to achieve fast binding kinetics. Furthermore, the hypothetical U-turn structure determines the direction of helix progression when the kissing complex progresses to a four-way helical junction structure. Another structural element in CopT is the helical stem adjacent to the recognition loop. This stem is important to present the recognition loop appropriately to provide a scaffold for the U-turn.
Furthermore, the role of protein Hfq in the interaction of antisense/target RNA was investigated, since several trans-encoded antisense RNAs had been shown to need this protein to exert their function. In contrast, studies of two cis-encoded antisense RNA systems showed that these antisense RNAs do not rely on Hfq for activity. In this study it was also shown that MicF, a trans-encoded antisense RNA which is dependent on Hfq, is greatly stabilized by this protein.
Jurado, Cojo Elena. "Modelling the ocean-atmosphere exchanges of Persistent Organic Pollutants (POPs)." Doctoral thesis, Universitat Politècnica de Catalunya, 2006. http://hdl.handle.net/10803/6397.
Full textAquesta tesi doctoral està centrada en la modelització dels processos de transferència de COPs entre l'atmòsfera i els oceans a escales regionals i globals. Per primera vegada, dades derivades de satèl·lits s'han acoblat amb models multimèdia de contaminants i de caixes de nivell I-III, donant lloc a estimacions d'acord amb un factor de dos amb les measures en molts dels casos. Així mateix, s'ha mostrat la variabilitat dels processos de deposició i la importància de considerar processos biogeoquímics a gran escala quan s'avalua la dinàmica dels COPs. Estimacions globals del procés de deposició atmosfèrica dominant, i fluxes d'enfonsament i subducció també s'han dut a terme. S'ha vist que la difusió aire-aigua és la ruta predominant de introducció de contaminants a oceans per a COPs predominantment en la fase gas. En canvi, la deposició seca i humida és dominant per certes regions i per a contaminants que tendeixen a sorbir-se fortament a aerosols. D'altra banda, la metodologia desenvolupada s'ha implementat per a estimar els bescanvis atmosfera-oceà de carboni orgànic total. Sorprenentment aquestes estimacions apunten a fluxes elevats que podrien ajudar a tancar els balanços globals de carboni.
El destí dels contaminants a curta escala i un cop han entrat a la columna d'aigua s'ha investigat mitjançant un model dinàmic 0-D i un model acoblat hidrodinàmic-contaminant 1-D. S'ha recalcat el paper dels sediments en el reciclatge de contaminants i dels fluxes atmosfèrics. Així mateix s'ha vist que la influència dels sediments és especialment important per a aigües poc profundes (< 20 m) i la profunditat a la qual difonen en la columna d'aigua s'explica amb la interacció entre fluxes turbulents i d'enfonsament. Així doncs, en aquesta tesi i per primera vegada s'ha dut a terme un analisi exhaustiu de la turbulència vertical en la dinàmica dels COPs
Tots aquests resultats es presenten en forma d'articles científics que han estat ja publicats o en procés de publicació.
Persistent organic pollutants (POPs), such as PCB, PCDD/FS and PAHs, are a group of chemicals targeted for reduction, or already banned, because of their persistence, potential for long-range transport and their ability to bioaccumulate in food-webs. Atmospheric transport and subsequent deposition has been described as the major process by which they impact remote oceanic areas. Additionally in the air-water interface, which accounts about the 70% of the Earth surface, take place many vital processes that determine the role of the oceans as a sink and as a reservoir of POPs. However the interpretation of these processes encounters difficulties because of the lack of measurements in the remote oceanic areas, and the lack of understanding of the dominant mechanisms at different spatial and temporal scales.
This PhD-thesis focuses on the modelling of the transfer processes of POPs between the atmosphere and the oceans at regional and global scales. Satellite derived data has been coupled with multimedia box-contaminant models of level I-III for the first time, yielding estimations in agreement within a factor of two with measurements, in most cases. Moreover, it is shown the noteworthy variability of atmospheric depositional fluxes and the importance of considering large biogeochemical processes in the oceans when evaluating the dynamics of POPs. Global estimations of the dominant atmospheric depositional, sinking and subduction fluxes have been also performed. It is seen that diffusive air-water exchange is the predominant route of introduction of contaminants to the oceans for POPs predominantly in the gaseous phase. However, dry and wet deposition become dominant in certain ocean regions and for compounds that sorb strongly to aerosols. Furthermore the developed methodology has also been implemented to estimate the atmosphere-ocean exchanges of total organic carbon. Surprisingly, these estimations point to high fluxes which could help to close the carbon budgets in the global carbon models.
The fate of contaminants on the short-time scale and once they enter the water column has been investigated by means of a 0-D dynamic model and a 1-D dynamic coupled contaminant-hydrodynamic model. It is stressed the role of sediments recycling contaminants and the atmospheric based fluxes. The influence of sediments is especially important for shallow water columns (< 20 m). The extent to which they diffuse in the water column is explained by the interplay between sinking and turbulent fluxes. In this thesis and for the first time a novel and comprehensive analysis of the vertical turbulence to the dynamics of POPs has been performed.
All these results have been published in scientific literature, are in press for publication or under review.
Moradi, Luca. "Salume arricchito in acidi grassi polinsaturi omega-3: controllo di parametri chimici qualitativi e compositivi in relazione ad un possibile incremento di ossidabilita’ della frazione lipidica durante la shelf-life." Bachelor's thesis, Alma Mater Studiorum - Università di Bologna, 2013. http://amslaurea.unibo.it/4978/.
Full textNamazi, Majid. "Learning in Combinatorial Constraint Optimisation." Thesis, Griffith University, 2022. http://hdl.handle.net/10072/419082.
Full textThesis (PhD Doctorate)
Doctor of Philosophy (PhD)
School of Info & Comm Tech
Science, Environment, Engineering and Technology
Full Text
Merlet, Christophe. "Initiation de la convection au-dessus des Vosges et de la Forêt Noire au cours de la campagne COPS : approche multi-instrumentale appliquée au 15 juillet 2007." Paris 6, 2013. http://www.theses.fr/2013PA066734.
Full textStorms prediction is one of the major problems of weather forecasting, regarding both the anticipation of situations in which convective phenomena are observed and cases for which convection does not initiate. The COPS (Convective and orographically-induced Precipitation Study) campaign which took place during the summer of 2007 over the Vosges and the Black Forest was an opportunity to use a complete multi- instrumental dataset to study the mesoscale variability of water vapor in the lower troposphere, and its impact on the initiation and inhibition of convection. The present work is focused particularly on dry layers observed many times in pre- convective conditions during the campaign. Based on the case study of 15 July 2007, the work details the processes that govern these dry layers and the role they play in the inhibition of convection. These processes involve regional advection of dry structures as well as more local processes related mainly to the impact of the topography on the impinging flow as well as diurnal orographic forcing. The analysis of the synoptic origin of dry air masses impacting the COPS region was also studied. Work around this case study also highlighted the worth of GPS tomography to study the spatial and temporal variability of water vapor at the regional scale. Similarly, the limited area model Meso-NH was used to assist in the interpretation process as well as to calculate air masses back-trajectories. A critical analysis of the representation of the dry layers in the model was also performed
Koenig, Samuel. "Bioaccumulation of persistent organic pollutants (POPs) and biomarkers of pollution in Mediterranean deep-sea organisms / Bioacumulación de contaminantes orgánicos persistentes (COPs) y biomarcadores en organismos del mar Mediterráneo profundo." Doctoral thesis, Universitat de Barcelona, 2012. http://hdl.handle.net/10803/104150.
Full textDurante mucho tiempo, el mar profundo se consideraba como el único medio exento de impacto antropogénico. Sin embargo, en las últimas décadas varios estudios han demostrado que el mar profundo no es tan prístino como se había pensado y que podría de hecho actuar como sumidero para contaminantes persistentes. Esta tesis tiene como objetivo de estudiar la bioacumulación de contaminantes orgánicos persistentes (COPs) en organismos del mar Mediterráneo profundo y los posibles efectos adversos que les pueden ocasionar. Con este fin, se determinaron los niveles de COPs legados como los bifenilos policlorados (PCBs), diclodifeniltricloroetano (DDTs), hexaclorociclohexanos (HCHs), y el penta- y hexaclorobenzeno (PeCB, HCB) y también de COPs emergentes como los polibromodifenil éteres (PBDEs). Además, se analizaron otros tipos de contaminantes como el mercurio (Hg) en musculatura y los metabolitos de hidrocarburos aromáticos policíclicos (PAHs) y alquilfenoles (APs) en bilis. Los posibles efectos negativos asociados con la exposición a estos contaminantes se determinaron mediante biomarcadores enzimáticos y de expresión génica, incluyendo enzimas de citocromo P450 (CYPs), glutatión-S-transferasa (GST), carboxilesterasa (CbE), glutatión peroxidasa (GPX), glutatión reductasa (GR) y catalasa (CAT). Los resultados obtenidos indicaron que los organismos de las zonas profundas del Mediterráneo están potencialmente expuestos a múltiples tipos de contaminantes de los cuales algunos pueden causar efectos adversos. En este contexto, este estudio es el primero en investigar los niveles de COPs legados y los emergentes PBDEs en organismos de gran profundidad del Mediterráneo. Además, se analizó por primera vez la presencia de metabolitos de APs en una especie abisal aportando información relevante respeto a la presencia y destino de estos contaminantes en el medio marino. Un objetivo importante de esta tesis consistía en investigar la contaminación del cañón de Blanes, ya que los cañones submarinos podrían actuar como vía de transporte preferencial de contaminantes asociados a partículas debido a su proximidad de la costa y su estructura geomorfológica. En este sentido, los resultados sugirieron que los organismos que habitan la zona de la cabecera del cañón de Blanes presentan un riesgo mayor de sufrir efectos adversos asociados a la exposición a COPs.
Benmerikhi, Mohamed. "La coordination dans les organisations temporaires à forte intensité de connaissances : variations autour d’un projet de type “complex product systems”." Thesis, Lille, 2019. http://www.theses.fr/2019LIL1A013.
Full textAlthough coordinating was addressed extensively in organizations and projects, it is much less studied in complex product systems (COPS) projects. Using a knowledge perspective, this compilation thesis addresses different research issues inherent to the process of coordinating using a qualitative longitudinal single case study design. Theoretically, we depict the multi-level character of coordination arguing in favour of a blend of emergent and planned coordination mechanisms. We then empirically demonstrate how, viewed as an artefact, a project management practice standard (the PMBOK Guide) ensures the coordination of spatially dispersed communities of practice. Thus, we characterize such relationship between an artefact and communities of practice as one of mutual constitution and co-evolution. We zoom in to a project participants level to depict the process of developing interdependencies by closing knowledge gaps. This results in dynamic shifts in actor and task interdependencies showing a flow of causality reciprocally between actors and tasks. Finally, we show that knowledge barriers to coordination are characteristic of COPS projects, and we outline how project participants overcome them using different artefacts imbricated with social action. This analysis provides empirical support for the idea that emergent processes of knowledge creation offer a complementary explanation for coordination problems. Thus, the present thesis provides a novel understanding of coordinating in COPS projects with notable contributions to the literature in project management as well as that on strategic management
Singleton, Chloe. "Metal binding studies of CopZ and CopA from Bacillus subtilis." Thesis, University of East Anglia, 2007. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.439937.
Full textSirakaya, Hatice Sinem. "A Comparision Of Object Oriented Size Evaluation Techniques." Master's thesis, METU, 2003. http://etd.lib.metu.edu.tr/upload/721183/index.pdf.
Full textLOC&rdquo
, &ldquo
OOPS&rdquo
, &ldquo
Use Case Points Method&rdquo
, &ldquo
J.Kammelar&rsquo
s Sizing Approach&rdquo
and &ldquo
Mark II FP&rdquo
) are applied to a project whose requirements are defined by means of use cases. Size and effort estimations are made and compared with the actual results of the project.
Ventura, Håkan. "Diameter : Next generations AAA protocol." Thesis, Linköping University, Department of Electrical Engineering, 2001. http://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-1195.
Full textThe need for AAA protocols in the world are increasing and todays most common protocols RADIUS and TACACS+, cannot cope with the fast advances in fields benefiting from the use of AAA protocols. This is why IETF has developed the protocol Diameter as a next generations AAA protocol. The objective of this thesis is to account for the work conducted with Diameter as well as to determine if it is going to become the major AAA protocol of the next generation. In this thesis, I describe what Diameter is, its close integration with the Mobile IP protocol and its other uses. As Diameter is based on RADIUS an introduction to AAA and RADIUS is given in order to comprehend where we are today and where we are going as well as to why. I also compare today’s protocols (RADIUS, TACACS+, Kerberos and COPS) against the next generations AAA protocol Diameter. From this comparison, the Mobile IP integration capabilities and an analysis of the support of the Diameter protocol I have come to the conclusion that Diameter is going to become the major AAA protocol of the next generation.
Ortiz, Almirall Xavier. "Eliminació de contaminants orgànics persistents d’oli de peix." Doctoral thesis, Universitat Ramon Llull, 2011. http://hdl.handle.net/10803/31962.
Full textEn la presente tesis doctoral se han estudiado diversos métodos para la eliminación de contaminantes orgánicos persistentes en aceites de pescado con finalidad alimentaria. Se han desarrollado los métodos de análisis necesarios para la correcta determinación de estos compuestos en la matriz de estudio. Se han evaluado con detalle las etapas de purificación de la muestra, fraccionamiento de los analitos y análisis instrumental. El método ha sido validado con resultados satisfactorios, y se ha comprobado su buen funcionamiento mediante ejercicios de intercalibraje, así como la realización de diversos estudios con muestras reales de aceite de pescado. Se ha estudiado la eliminación de los contaminantes persistentes mediante adsorbentes sólidos con base silícica y carbonacea. Las condiciones experimentales han estado estudiadas en profundidad mediante diseños de experiencias y de evolución. Los mejores resultados se han obtenido con carbón activo, que demuestra una elevada eficacia en la eliminación de PCDD/Fs, dl-PCBs y HCB. Se ha estudiado la eliminación de los contaminantes orgánicos persistentes mediante técnicas de degradación fotoquímica. Inicialmente se ha fotodegradado cada familia de contaminantes por separado, para poder estudiar más a fondo las condiciones necesarias para su eliminación. Posteriormente se ha estudiado la degradación simultánea de los analitos de interés en aceite de pescado. Esta técnica se ha mostrado efectiva en la eliminación de DDT, PBDEs, HCB y PCBs similares a dioxinas. Paralelamente a los estudios de eliminación mediante adsorbentes sólidos y técnicas fotoquímicas, se ha comprobado la calidad de los aceites de pescado antes y después del tratamiento. El proceso de adsorción en sólidos no afecta significativamente a la calidad del aceite, mientras que las técnicas fotoquímicas degradan una parte de los ácidos grasos insaturados. Se ha estudiado la eliminación de contaminantes orgánicos persistentes en aceites de pescado mediante la combinación de las dos técnicas estudiadas anteriormente, con una primera etapa de degradación fotoquímica y una segunda etapa de adsorción. Se han comparado los resultados finales de eliminación que se obtienen con cada uno de los métodos desarrollados. La adsorción en carbón activo es el proceso más adecuado para la eliminación de COPs en aceite de pescado. Se ha realizado un estudio de los niveles diastereoisoméricos y enantioméricos de un contaminante emergente –HBCD- en aceite de pescado. Se ha evaluado su capacidad de eliminación de la matriz de estudio mediante adsorbentes con base carbonacia y degradación fotoquímica, siendo principalmente eliminado por la segunda vía.
During the present doctoral thesis several methods for the elimination of persistent organic pollutants from fish oil have been studied. Analytical methodologies for the determination of these compounds in fish oil have been developed. Sample purification, fractionation of the analytes and instrumental determination steps have been deeply studied. The method has been validated with satisfactory results, and its performance has been verified through its participation in several intercalibration exercises and studies with real fish oil samples. Elimination of persistent organic pollutants with silicon and carbon-based adsorbents has been studied. The experimental conditions have been studied in depth with an experimental design, to finally optimize the adsorption method using an evolutionary design. Best results have been obtained with the active carbon, showing high efficiency of the removal of PCDD/Fs, dioxin-like PCBs and HCB. Elimination of persistent organic pollutants with photochemical degradation techniques has been studied. Initially, each family of pollutants has been photodegraded separately, to determine its degradation conditions, as well as degradation mechanisms and by-products. Later, simultaneous photodegradation of the analytes has been studied in fish oil. This technique has shown high efficiency on the degradation of DDT, PBDEs, HCB and dioxin-like PCBs. The quality of the oils before and after the treatments with solid adsorbents and photochemical degradation has also been studied. The adsorption process does not significantly affect the quality of the oils, while photochemical techniques can degrade the unsaturated fatty acids. Elimination of persistent organic pollutants in fish oil combining adsorption in solids and photochemical degradation has been studied. Results obtained with each of the developed methodologies (adsorption, photodegradation and combined method) were compared. Adsorption in active carbon is the most suitable process for COPs elimination in fish oil. Finally, diastereoisomeric and enantiomeric levels of an emerging pollutant –hexabromocyclododecane (HBCD)- in fish oil have been studied. Its elimination has been evaluated with carbon-based adsorbents and photochemical degradation, being mainly eliminated with the photodegradation techniques.
Tridon, Frédéric. "Mesure des précipitations à l'aide d'un radar en bande X non-cohérent à haute résolution et d'un radar en bande K à visée verticale. Application à l'étude de la variabilité des précipitations lors de la campagne COPS." Phd thesis, Université Blaise Pascal - Clermont-Ferrand II, 2011. http://tel.archives-ouvertes.fr/tel-00777843.
Full textBlom, Johanna Petronella. "The ideal of an integrated national qualifications framework." Thesis, University of Pretoria, 2007. http://hdl.handle.net/2263/25652.
Full textThesis (PhD (Education Management and Policy Studies))--University of Pretoria, 2007.
Education Management and Policy Studies
unrestricted
Rayroux, Pascale. "Consentement, liberté de disposer de son coprs et licéité des conventions relatives au corps humain." Paris 2, 1993. http://www.theses.fr/1993PA020055.
Full textMc, Inerney Fionn. "Jeux de domination et d’identification dans les graphes." Thesis, Université Côte d'Azur (ComUE), 2019. http://www.theses.fr/2019AZUR4049.
Full textIn this thesis, 2-player games on graphs and their algorithmic and structural aspects are studied. First, we investigate two dynamic dominating set games: the eternal domination game and its generalization, the spy game. In these two games, a team of guards pursue a fast attacker or spy in a graph with the objective of staying close to him eternally and one wants to calculate the eternal domination number (guard number in the spy game) which is the minimum number of guards needed to do this. Secondly, the metric dimension of digraphs and a sequential version of the metric dimension of graphs are then studied. These two problems are those of finding a minimum subset of vertices that uniquely identify all the vertices of the graph by their distances from the vertices in the subset. In particular, in the latter, one can probe a certain number of vertices per turn which return their distances to a hidden target and the goal is to minimize the number of turns in order to ensure locating the target. These games and problems are studied in particular graph classes and their computational complexities are also studied. Precisely, in Chapter 3, the NP-hardness of the spy game and the guard numbers of paths and cycles are first presented. Then, results for the spy game on trees and grids are presented. Notably, we show an equivalence between the fractional variant and the "integral" version of the spy game in trees which allowed us to use Linear Programming to come up with what we believe to be the first exact algorithm using the fractional variant of a game to solve the "integral" version. In Chapter 4, asymptotic bounds on the eternal domination number of strong grids are presented. In Chapter 5, results on the NP-completeness of the Localization game under different conditions (and a variant of it) and the game in trees are presented. Notably, we show that the problem is NP-complete in trees, but despite this, we come up with a polynomial-time (+1)-approximation algorithm in trees. We consider such an approximation to be rare as we are not aware of any other such approximation in games on graphs. Lastly, in Chapter 6, results on the metric dimension of oriented graphs are presented. In particular, the orientations which maximize the metric dimension are investigated for graphs of bounded degree, tori, and grids
Michon, Bernard. "L'espace des sciences et techniques des activites physiques et sportives : recours au corps et effets de coprs." Université Marc Bloch (Strasbourg) (1971-2008), 1993. http://www.theses.fr/1993STR20011.
Full textAccording to the logic of the evidence and refering to pierre bourdieu's critical structuralism, the analysis of the space of sciences and technics relative to physical and athletic activities (space which is not presupposed as a "field"), requires to construct the concept of body capital and it shows that the social trajectories of the agents participate in determining its social identity in the prolongation of the previous formations relative to the athletic and physical education teaching. As an element of the teaching system, this space, which is of recent emergence, which is more or less defined and which is the scene of a relative pluralism, participates to the social reproduction according to "the causality of the probable". Place of conflicts between different social groups in order to dominate it, this space which represents essentially the middle class, pulls numbers of its properties out of its position and it seems to be dependent on the athletic and physical education in the demonstration of the corps effects. Through the analysis of the candidates, the students, the alumni, the teachers in physical education, and the teachers in the sciences and technics relative to physical and athletic activities, this research rebuilds a trajectory which allows to bring evidence of recourses to the body for a social becoming and effects of socials positions as stages of an individual trajectory