Dissertations / Theses: 'Containment'

1

Roth, Lucia Barbara. "Optimal containment." kostenfrei, 2009. https://mediatum2.ub.tum.de/node?id=958434.

APA, Harvard, Vancouver, ISO, and other styles

2

Bradley, Michael Ian. "Quantitative bioprocess containment validation." Thesis, University College London (University of London), 2000. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.395529.

Full text

APA, Harvard, Vancouver, ISO, and other styles

3

Carter, Carol Lee. "Hospital cost containment in Massachusetts." Thesis, Massachusetts Institute of Technology, 1986. http://hdl.handle.net/1721.1/72249.

Full text

Abstract:

Thesis (Ph. D.)--Massachusetts Institute of Technology, Dept. of Urban Studies and Planning, 1986.
MICROFICHE COPY AVAILABLE IN ARCHIVES AND ROTCH.
Includes bibliographical references.
by Carol Lee Carter.
Ph.D.

APA, Harvard, Vancouver, ISO, and other styles

4

Renner, Casey A. (Casey Adam). "Or else : cataclysm and containment." Thesis, Massachusetts Institute of Technology, 2008. http://hdl.handle.net/1721.1/42451.

Full text

Abstract:

Thesis (M. Arch.)--Massachusetts Institute of Technology, Dept. of Architecture, 2008.
Page 110 blank.
Includes bibliographical references (p. 108-109).
An analysis of the figure-ground relationships of central Minneapolis, Calgary, or Montreal must inevitably include the emergence of and pervasiveness of interior pedestrian walkways - no longer can the street/building relationship be viewed as binary or even sharing the same ground plane. The third condition, neither distinctly figure nor ground and either elevated or buried, in some ways functions as an autonomous unit detached from the city grid yet is intricately attached from building to building as climate protection. The accumulated effect of seamless sequences of corridors renders autonomous and free-standing structures obsolete. Introversion becomes de-contextual (or creates its own interior context), yet it is nevertheless a direct product of its environment as a form of retreat or protection - it is simultaneously a product of, and a removal from a harsh context. As a progressive form of urbanism, potentially allowing for increased circulation, density, and climate protection, Interior Urbanism must be considered under its own merits as a public realm and infrastructural opportunity. While traditional ideas of urban morphology inform this new situation, it is also an aberration of historical methods of city-building. This thesis is a stress-test of hermetically sealed architecture and urbanism and its inherent opportunities and limitations. If our ideas of enclosure and definition of figures pervade notions of our cities, an interior and bound condition falls victim to excessive constraints and must find a way to expand beyond its rigid confines and multiply an otherwise bounded space. This project speculates on the potential of urbanism through accumulations of multiple, localized gestures, and on opportunities to increase the seemingly limited dimension of the interior.
by Casey A. Renner.
M.Arch.

APA, Harvard, Vancouver, ISO, and other styles

5

Potter, Lara Jennifer. "Containment migration through consolidating soils." Thesis, University of Cambridge, 1996. https://www.repository.cam.ac.uk/handle/1810/272690.

Full text

APA, Harvard, Vancouver, ISO, and other styles

6

Aldridge, R. J. "Computerised plant layout for hazards containment." Thesis, University of Nottingham, 1986. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.371268.

Full text

APA, Harvard, Vancouver, ISO, and other styles

7

Ferris, L. E. "Microbial population balancing for containment specification." Thesis, University College London (University of London), 1995. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.307653.

Full text

APA, Harvard, Vancouver, ISO, and other styles

8

Liendo, Martha Louise. "Preferential Arrangement Containment in Strict Superpatterns." Digital Commons @ East Tennessee State University, 2012. https://dc.etsu.edu/etd/1428.

Full text

Abstract:

Most results on pattern containment deal more directly with pattern avoidance, or the enumeration and characterization of strings which avoid a given set of patterns. Little research has been conducted regarding the word size required for a word to contain all patterns of a given set of patterns. The set of patterns for which containment is sought in this thesis is the set of preferential arrangements of a given length. The term preferential arrangement denotes strings of characters in which repeated characters are allowed, but not necessary. Cardinalities for sets of all preferential arrangements of given lengths and alphabet sizes are found, as well as cardinalities for sets where reversals fall into the same equivalence class and for sets in higher dimensions. The minimum word length and the word length necessary for a strict superpattern to contain all preferential arrangements for alphabet sizes two and three are also detailed.

APA, Harvard, Vancouver, ISO, and other styles

9

Akbarnejad, Nesheli Babak. "Rock mechanics aspects of blowout self-containment." [College Station, Tex. : Texas A&M University, 2006. http://hdl.handle.net/1969.1/ETD-TAMU-1835.

Full text

APA, Harvard, Vancouver, ISO, and other styles

10

Ortez, Garay Cristian A. "Risk Evaluation of a Mercury Containment System." FIU Digital Commons, 2011. http://digitalcommons.fiu.edu/etd/535.

Full text

Abstract:

A probabilistic risk assessment model using GOLDSIM software was developed to evaluate the uncertainty of selected hydrological and soil parameters on mercury releases from a mercury containment system, which will be constructed within the Environmental Management Waste Management Facility in the Bear Creek Valley at the Oak Ridge Reservation in Tennessee. The main objective was to determine the concentrations and risk of exceeding the drinking water standard of mercury in a selected receptor well. A series of simulations were then conducted for various design periods, with emphasis on 10,000 years to determine those concentrations and risks. Experimental data for selected parameters such as dry bulk density, partition coefficient, and porosity and infiltration rate were represented by Probability Density Functions in support of Monte Carlo analyses. A sensitivity analysis showed that concentrations and risk are, for instance, most sensitive to porosity in the unsaturated zone. The simulations suggest that all herein estimates of concentrations and risks of mercury in drinking water should be well below established limits.

APA, Harvard, Vancouver, ISO, and other styles

11

Lotan, Gurit. "Physicians and cost containment : issues of disclosure." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 1997. http://www.collectionscanada.ca/obj/s4/f2/dsk1/tape11/PQDD_0007/MQ44207.pdf.

Full text

APA, Harvard, Vancouver, ISO, and other styles

12

Hu, Lenny Lingyi. "Sexuality and containment, Ling Mengchu's erotic stories." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 1999. http://www.collectionscanada.ca/obj/s4/f2/dsk1/tape9/PQDD_0011/NQ50039.pdf.

Full text

APA, Harvard, Vancouver, ISO, and other styles

13

Fares, Tony Yussef. "Digital rights management for smart containment objects." Access electronically, 2005. http://www.library.uow.edu.au/adt-NWU/public/adt-NWU20060511.151012/index.html.

Full text

APA, Harvard, Vancouver, ISO, and other styles

14

Ransom, Nathan A. "Multi-threat containment with dynamic wireless neighborhoods /." Online version of thesis, 2008. http://hdl.handle.net/1850/7760.

Full text

APA, Harvard, Vancouver, ISO, and other styles

15

Ratzlaff, Steven Abraham. "Optimal well location in contaminant plume containment." Thesis, Georgia Institute of Technology, 1991. http://hdl.handle.net/1853/20017.

Full text

APA, Harvard, Vancouver, ISO, and other styles

16

Fastlund, Niklas. "The subgraph containment problem in random graphs." Thesis, Uppsala universitet, Algebra och geometri, 2015. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-260377.

Full text

APA, Harvard, Vancouver, ISO, and other styles

17

Unsworth, Hugh P. "Cementitious materials in waste containment, leach studies." Thesis, University of Dundee, 1996. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.337409.

Full text

APA, Harvard, Vancouver, ISO, and other styles

18

Bru-Domínguez, Eva. "Beyond containment : corporeality in Mercè Rodoreda's literature." Thesis, University of Birmingham, 2011. http://etheses.bham.ac.uk//id/eprint/2982/.

Full text

Abstract:

This thesis examines constructions of corporeality in three novels by the Catalan author Mercè Rodoreda: El carrer de les Camèlies (1966), Mirall trencat (1974) and La mort i la primavera (1986), and the short stories: ‘Aquella paret, aquella mimosa’, ‘Una fulla de gerani blanc’ and ‘La meva Cristina’. The study is concerned with locating the author’s formulations of the body in relation to the Catalan socio-historical context and argues that by rendering corporeal representation problematic Rodoreda enters into dialogue with Catalonia’s own historical past, often challenging culturally specific social, sexual, political and aesthetic precepts. The thesis primarily draws on visual and spectatorship theory, urban and spatial studies and feminist analyses in order to explore the idea of the politically, culturally and gender coded body as limit or border. It covers four main areas of analysis: the idea of the body as surface, image and texture and the practices of viewing that objectify the body; the relationship between the body and domestic and urban space; the culturally and politically constructed body as limit; and the concept of the abject or open body which in Rodoreda’s literature is often the consequence of either social, visual or physical violence.

APA, Harvard, Vancouver, ISO, and other styles

19

Razzall, Lucy Mary Frances. "Containers and containment in early modern literature." Thesis, University of Cambridge, 2013. https://www.repository.cam.ac.uk/handle/1810/283917.

Full text

APA, Harvard, Vancouver, ISO, and other styles

20

Pavliuk, O. I. "The U.S. policy towards Iran: containment options." Thesis, БДМУ, 2017. http://dspace.bsmu.edu.ua:8080/xmlui/handle/123456789/17365.

Full text

APA, Harvard, Vancouver, ISO, and other styles

21

Yelimeli, Guruprasad Arun. "Computer Virus Spread Containment Using Feedback Control." Thesis, University of North Texas, 2004. https://digital.library.unt.edu/ark:/67531/metadc4675/.

Full text

Abstract:

In this research, a security architecture based on the feedback control theory has been proposed. The first loop has been designed, developed and tested. The architecture proposes a feedback model with many controllers located at different stages of network. The controller at each stage gives feedback to the one at higher level and a decision about network security is taken. The first loop implemented in this thesis detects one important anomaly of virus attack, rate of outgoing connection. Though there are other anomalies of a virus attack, rate of outgoing connection is an important one to contain the spread. Based on the feedback model, this symptom is fed back and a state model using queuing theory is developed to delay the connections and slow down the rate of outgoing connections. Upon implementation of this model, whenever an infected machine tries to make connections at a speed not considered safe, the controller kicks in and sends those connections to a delay queue. Because of delaying connections, rate of outgoing connections decrease. Also because of delaying, many connections timeout and get dropped, reducing the spread. PID controller is implemented to decide the number of connections going to safe or suspected queue. Multiple controllers can be implemented to control the parameters like delay and timeout. Control theory analysis is performed on the system to test for stability, controllability, observability. Sensitivity analysis is done to find out the sensitivity of the controller to the delay parameter. The first loop implemented gives feedback to the architecture proposed about symptoms of an attack at the node level. A controller needs to be developed to receive information from different controllers and decision about quarantining needs to be made. This research gives the basic information needed for the controller about what is going on at individual nodes of the network. This information can also be used to increase sensitivity of other loops to increase the effectiveness of feedback architecture.

APA, Harvard, Vancouver, ISO, and other styles

22

Pralle, Sarah Beth. "Conflict expansion and containment in forestry politics /." Thesis, Connect to this title online; UW restricted, 2001. http://hdl.handle.net/1773/10748.

Full text

APA, Harvard, Vancouver, ISO, and other styles

23

Pike, Scott Mason. "Distributed resource allocation with scalable crash containment." Connect to this title online, 2004. http://rave.ohiolink.edu/etdc/view?acc%5Fnum=osu1092857584.

Full text

Abstract:

Thesis (Ph. D.)--Ohio State University, 2004.
Title from first page of PDF file. Document formatted into pages; contains xiv, 154 p.; also includes graphics, map. Includes bibliographical references (p. 148-154). Available online via OhioLINK's ETD Center

APA, Harvard, Vancouver, ISO, and other styles

24

Chakrovorty, Ritam. "LIGHTWEIGHT TESTBED FOR EVALUATING WORM CONTAINMENT SYSTEMS." OpenSIUC, 2010. https://opensiuc.lib.siu.edu/theses/188.

Full text

Abstract:

Treacherous worms can compromise thousands of hosts in a very short time. Mitigating these worm threat requires prompt and effective containment strategies. Containing the fast propagating worm is a difficult task and hence is a ongoing area of interest for many researchers. Many containment systems have been proposed including anomaly detection, address blacklisting and signature-based content filtering. Meanwhile recently developed worm models enable us to develop a testbed to accurately and quickly evaluate the efficiency of these defense mechanisms. In this thesis, we present a testbed which utilizes software agents to achieve large scale simulation and maintain functionality of each individual host. In addition, our proposed containment systems are evaluated using this testbed in terms of security and performance tradeoff. For the purpose of evaluation, the testbed is firstly exposed to analyze normal network and worm behavior pursued by multiple containment tactics. Our results indicate that a dynamic containment system achieves better performance and security. We believe our testbed is an effective tool to explore and evaluate varying worm containment systems.

APA, Harvard, Vancouver, ISO, and other styles

25

Costain, Andrew J. "The development and analysis of a mobile explosive containment unit for on-board aircraft protection." Thesis, Virginia Tech, 2014. http://hdl.handle.net/10919/50521.

Full text

Abstract:

This body of work examines the process involved in researching a mobile explosive containment unit for use on board a commercial aircraft. If a device with unknown origin were discovered on board a commercial aircraft an explosive containment unit could be used to dispose of it thereby preventing the passengers and the hardware from incurring any harm. A methodology was developed to help understand and effectively capture the properties of nominal explosives, the detonation pulse, ensuing shock and pressure waves. This methodology was developed with the purpose of mitigating these explosive effects. The information concerning the material properties, shape and sizes of an explosive containment unit were all analyzed to identify one optimal containment unit. This containment unit was utilized extensively in modeling to determine a range of possible materials and reinforcement methods, for reducing the total weight of the unit. Upon optimizing the containment unit numerical analysis was performed on a fuselage section of a narrow body commercial aircraft with the containment unit. The containment unit was successful in arresting the explosion before it was able to cause harm to its surroundings. The success of these containment units proves that the methodology discussed and developed here is capable of rabidly developing and analyzing explosive containment units to fit a wide variety of needs.
Master of Science

APA, Harvard, Vancouver, ISO, and other styles

26

Hartnick, Angelo. "Effects of thermal stresses on Pressurised Water Reactor nuclear containment vessels following a Loss of Coolant Accident with assimilated containment filtered venting system." Master's thesis, Faculty of Engineering and the Built Environment, 2021. http://hdl.handle.net/11427/32718.

Full text

Abstract:

In a nuclear power plant, the last barrier under normal and accident operations is the containment building. This is normally constructed from concrete reinforced with steel bars, which are prestressed to enhance the overall capability to withstand thermodynamic stresses like over-pressurisation and high temperatures. The failure of this final barrier will lead to the release of radioactivity to the surrounding environment. To examine the effects of thermo-hydraulic stresses on PWR containment following a LOCA, a model is proposed with simulated scenarios performed at the Koeberg Nuclear Power Station as a case study. The accidents were simulated using the Koeberg engineering simulator to obtain the output data. The scenario for the proposed model correlates the critical mass flow from a double-ended guillotine break to the containment pressure and temperature increase. Different containment filtered venting systems (CFVS) are also investigated in this study as severe accident management systems. CFVS have historically been included in boiling water reactor (BWR) designs, but following the Fukushima Daiichi nuclear accident, they are being introduced as severe accident management systems to manage the threat of containment over-pressurisation in pressurised water reactors (PWR). Finally, the rate of change in containment pressure and temperature is analysed and compared to literature, with the incorporation of a simulated filtered venting system to the PWR containment building.

APA, Harvard, Vancouver, ISO, and other styles

27

Pjetraj, Walter M. "Conflict containment in the Balkans : testing extended deterrence /." Thesis, Monterey, Calif. : Springfield, Va. : Naval Postgraduate School ; Available from National Technical Information Service, 1995. http://handle.dtic.mil/100.2/ADA297658.

Full text

APA, Harvard, Vancouver, ISO, and other styles

28

Narayanan, Anandhi. "Global model for iodine behaviour in reactor containment." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 2000. http://www.collectionscanada.ca/obj/s4/f2/dsk1/tape3/PQDD_0020/MQ53344.pdf.

Full text

APA, Harvard, Vancouver, ISO, and other styles

29

Cadzow, Jenny. "The subversion and containment of Mrs Gaskell's Ruth /." Title page only, 1996. http://web4.library.adelaide.edu.au/theses/09AR/09arc126.pdf.

Full text

APA, Harvard, Vancouver, ISO, and other styles

30

Costa, M. "End-to-end containment of internet worm epidemics." Thesis, University of Cambridge, 2007. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.598013.

Full text

Abstract:

Worms – programs that self-replicate automatically over computer networks – are a serious threat to hosts connected to the Internet. They infect hosts by exploiting software vulnerabilities, and they can use their victims for many malicious activities. Past outbreaks show that worms can spread too fast for humans to respond, hence worm containment must be automatic. We propose Vigilante: a new end-to-end architecture to contain worms automatically. In Vigilante, hosts detect worms by instrumenting vulnerable programs to analyze infection attempts. We introduce dynamic data-flow analysis: a broad-coverage host-based algorithm that can detect unknown worms, by tracking the flow of data from network messages, and disallowing unsafe uses of that data. We also show how to integrate other host-based detection mechanisms into the Vigilante architecture. Upon detection, hosts generate self-certifying alerts (SCAs), a new type of security alert that can be inexpensively verified by any vulnerable host. Using SCAs, hosts can cooperate to contain an outbreak, without having to trust each other. Vigilante broadcasts SCAs over an overlay network that propagates alerts rapidly and resiliently. Hosts receiving an SCA protect themselves by generating filters with vulnerability condition slicing: an algorithm that performs dynamic analysis of the vulnerable program to identify control-flow conditions that lead to successful attacks. These filters block the worm attack, including all mutations that follow the execution path identified by the SCA, while introducing a negligible performance overhead. Our results show that Vigilante can contain fast spreading worms that exploit unknown vulnerabilities without false positives. Vigilante does not require any changes to hardware, compilers, operating systems or the source code of vulnerable programs; therefore, it can be used to protect software as it exists today in binary form.

APA, Harvard, Vancouver, ISO, and other styles

31

Dragovic, Boris. "CASPEr : containment-aware security for pervasive computing environments." Thesis, University of Cambridge, 2006. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.614043.

Full text

APA, Harvard, Vancouver, ISO, and other styles

32

Borrie, Lee Adam. ""Wild Ones: Containment Culture and 1950s Youth Rebellion"." Thesis, University of Canterbury. American Studies, 2007. http://hdl.handle.net/10092/1003.

Full text

Abstract:

My study seeks to fill a void in Cold War historiography by situating the emergence of 1950s youth culture in the context of containment culture, evaluating the form and extent of youth's cultural 'rebellion'. The pervasive cultural discourse of 'containment', which operated as both a foreign policy to restrict the Soviet Union's sphere of influence and a domestic policy to stifle political dissent, mandated that America propagate an image of social harmony and political plurality during the early years of the Cold War. Yet the emergence of a rebellious youth culture in the middle of the 1950s challenges the notion that America was a 'consensus society' and exposes the limitations and fissures of the white middle class hegemony that the containment narrative worked to legitimate. In examining the rise of rock n roll, the emergence of the drive-in theatre as a "teen space," and the significance of "style" to the galvanization of 1950s youth culture, this study examines the ways in which youth culture of the period variously negotiated, resisted, and accommodated containment culture.

APA, Harvard, Vancouver, ISO, and other styles

33

Cherry, Christopher Lee Albert. "Development of novel containment systems for freeze-drying." Thesis, Cardiff Metropolitan University, 2013. http://hdl.handle.net/10369/4744.

Full text

Abstract:

This thesis investigates the novel use of paper and Tyvek sterilisation pouches as containment systems to perform various applications of freeze-drying. Their effect on the freeze-drying of a pharmaceutical protein, mass and heat transfer, sterile freeze-drying and containment of microorganisms were examined. Ovine derived Immunoglobulin G (IgG) specific for fluorescein was used as a model biopharmaceutical protein and a range of assays developed to quantify its biological activity, aggregation, turbidity, residual moisture and reconstitution time. IgG was formulated using different carbohydrates and analysed using freeze-drying microscopy to allow precise development of optimum freeze-drying cycles. The IgG was freeze-dried using these cycles and the function and structure of the IgG was shown to be unaffected. Freeze-drying cycles were modified to investigate the effect paper and Tyvek pouches had on the IgG which showed no change in activity or structure. However, pouches decreased sublimation rates and increased process time. Resistance to water vapour, and the subsequent effect on mass and heat transfer during the freeze-drying process, imposed by paper and Tyvek sterilisation pouches, Gore Lyoguard, product dry layer and freeze-drying stoppers were investigated. Pouches presented greater resistance to water vapour movement than the dry product layer, Lyoguard and stoppers. Increasing resistance decreases mass transfer, increases pressure inside the pouches thereby increasing the heat transfer coefficient. A process simulation using nutrient rich media was performed where vials were packaged aseptically and transported to a freeze-drier in a normal laboratory environment. The vials showed no growth of contaminating microorganisms after incubation. In addition, pouches containing nutrient rich media were challenged with aerosolised Saccharomyces cerevisiae and also showed no growth of contaminating microorganisms after incubation. Finally, pouches were demonstrated to be able to contain Escherichia coli during freeze-drying thus preventing contamination of the freeze-drier and the environment.

APA, Harvard, Vancouver, ISO, and other styles

34

Reglar, John Michael. "Experimental and computational studies of ventilation and containment." Thesis, University of Bristol, 2000. http://hdl.handle.net/1983/6bbda635-022d-4dda-a784-9979f0b14412.

Full text

APA, Harvard, Vancouver, ISO, and other styles

35

Masendeke, Rugare B. "Parametric study of stiffened steel containment shell structures." Master's thesis, University of Cape Town, 2008. http://hdl.handle.net/11427/19019.

Full text

Abstract:

Includes bibliographical references. .
A FEM-based parametric study is undertaken to investigate the buckling behavior of meridionally and circumferentially stiffened steel cylindrical and conical shell frustum subjected to different load cases. This situation arises in different steel shell applications such as storage vessels (liquid, solid and gas) and in certain configurations of industrial process facilities. The stiffeners are flat strips of rectangular section welded on to the outer surface of the shell, either over the whole length of the shell meridian or around the circumference of the shell. It is required to establish how the elastic buckling load and mode shapes vary with respect to certain key parameters of the problem. The parameters of interest in the study include the number of stiffeners around the shell circumference and along the meridian, the stiffener-depth to shell-thickness ratio, and the stiffener depth-to-width ratio. This thesis reports the findings of the parametric study and also presents some results of experimental tests on laboratory small-scale models of stiffened cylindrical and conical frusta.

APA, Harvard, Vancouver, ISO, and other styles

36

Amy, Caleb(Caleb A. ). "Thermal energy grid storage : liquid containment and pumping." Thesis, Massachusetts Institute of Technology, 2020. https://hdl.handle.net/1721.1/128992.

Full text

Abstract:

Thesis: Ph. D., Massachusetts Institute of Technology, Department of Mechanical Engineering, 2020
Cataloged from student-submitted PDF of thesis.
Includes bibliographical references (pages 149-158).
As the cost of renewable energy falls below fossil fuels, the key barrier to widespread sustainable electricity has become availability on demand. Energy storage can enable dispatchable renewables, but only with drastic cost reductions compared to current batteries. In this thesis, I investigate an electricity storage concept that stores electricity as sensible heat in an extremely hot liquid (>2000°C) and uses multi-junction photovoltaics (MPV) as a heat engine to convert it back to electricity on demand hours, or days, later. In addition to a technoeconomic analysis, this thesis focuses experimentally on heating, liquid containment, and pumping. The transfer of the storage liquid is key because it enables conversion to and from electricity and compact, efficient heat transfer. However, operating at these extreme temperatures introduces many practical challenges, so several novel solutions related to containment and pumping are investigated including high-performance heaters, sealing a large multi-part tank with affordable materials, and pumping above 2000°C. The key result is that although affordable silicon can be contained in affordable graphite and pumped at these temperatures, temperature variation in the system causes it the graphite infrastructure to rapidly dissolve and ultimately fail in a matter of hours. Alternative embodiments are proposed with recommendations on areas of future work. The key takeaway from the technoeconomic modeling is that integrating low-cost thermal storage with an inexpensive heat engine can enable an economical approach to electricity storage, even without high round trip efficiencies. Thus, despite the challenges, future work is warranted.
by Caleb Amy.
Ph. D.
Ph.D. Massachusetts Institute of Technology, Department of Mechanical Engineering

APA, Harvard, Vancouver, ISO, and other styles

37

Houston, Graham James Leslie. "Understanding buckling containment features for aerospace panel design." Thesis, Queen's University Belfast, 2016. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.706978.

Full text

Abstract:

To improve aircraft structural performance requires practical design changes and better incorporation of advanced technologies. Instability failure modes typically constrain aerospace panel designs because buckling occurs at stresses less than that of material yield. Buckling containment features, small stiffeners located between the primary stiffeners/stringers, provide the ability to significantly improve panel-buckling stresses and thus exploit the full potential of available materials. Inclusion of buckling containment features into industrial panel sizing procedures is constrained by the current inability to robustly predict and understand the complex buckling behaviour. To aid inclusion requires a novel design approach that facilitates the extraction of understanding and selection of the optimum design. The project develops a finite element modelling methodology that permits robust buckling behaviour prediction of plates with buckling containment features. A novel design chart presents compression and shear loading buckling behaviour predictions that are applicable to both high load intensity wing and low load intensity fuselage applications. Interrogation of the design charts enhances current understanding of how plates with buckling containment features buckle. An experimental verification indicates the finite element modelling methodology to be accurate to within approximately 20% and 7% for initial and collapse buckling behaviour respectively. These deviations result from differences between the configuration of the finite element modelling methodology, the design of the test specimens, and the experimental setup. The work develops the first theoretical compression buckling framework for predicting PBCF buckling behaviour subject to compression loading. A verification process against predictions finite element analysis indicates a correlation error of less than 5% when considering structure of aspect ratio greater than three. Furthermore, using regression analysis and finite element analysis, the work develops a computationally efficient closed-form means to predict PBCF buckling behaviour that is suitable for inclusion into early (conceptual/preliminary) aerospace panel sizing procedures.

APA, Harvard, Vancouver, ISO, and other styles

38

Yang, Lan. "Influence minimization and rumor containment in social networks." Electronic Thesis or Diss., Aix-Marseille, 2019. http://www.theses.fr/2019AIXM0571.

Full text

Abstract:

Cette thèse porte sur l'endiguement des rumeurs et la minimisation de l'influence dans les réseaux sociaux. Dans la première partie, nous formalisons deux problèmes distincts de minimisation d'influence sous le modèle à LTM, c'est-à-dire la minimisation des pertes avec perturbation (LMD) et la minimisation de la diffusion avec cible garantie (DMGT). Pour le problème LMD, nous montrons qu'il est équivalent à la résolution d'un problème de programmation linéaire en nombres entiers. Pour le problème DMGT, nous fournissons une technique pour rechercher une solution optimale qui fonctionne pour les cas particuliers et discutons d'une heuristique simple pour trouver une solution dans le cas général. La maîtrise des rumeurs est analysée dans les deuxième et troisième parties de cette thèse en adoptant différentes stratégies de contrôle des rumeurs. Nous adoptons d'abord la stratégie du contrepoids en diffusant une information correcte. Nous proposons une version compétitive et généralisée, c'est-à-dire LT1DT. Le problème de la minimisation de la propagation des rumeurs (MRS) est abordé et s'est avéré difficile pour notre modèle généralisé. En raison de la dureté théorique du problème MRS, nous présentons trois heuristiques différentes et définissons leurs versions contraintes pour souligner l’effet de proximité pour résoudre le problème MRS. Pour contrôler la propagation de la rumeur, nous considérons ensuite la stratégie de perturbation du réseau en bloquant un ensemble de noeuds. Nous proposons ensuite une formulation non linéaire du problème d'identification des top-k-bloquants et introduisons quelques techniques mathématiques pour linéariser la formulation non linéaire
This thesis mainly focuses on the rumor containment and influence minimization problems in social networks. In the first part, we formalize two different influence minimization problems generalizing the scenarios under the LTM model, i.e., the Loss Minimization with Disruption (LMD) and the Diffusion Minimization with Guaranteed Target (DMGT). For the LMD problem, we show that it is equivalent to solving an integer linear programming problem. For the DMGT problem, we provide a technique to search for an optimal solution that works in some particular cases and discuss a simple heuristic to find a solution in the general case.Rumor containment is analyzed in the second and third parts of this thesis by investigating different rumor control strategies. We first adopt the counterbalance strategy by spreading truth. We propose a competitive and generalized version of the LTM, i.e., LT1DT. The problem of minimizing rumor spread (MRS) is addressed. To cope with the computational complexity of the MRS problem, we present three different heuristics and define their constrained versions to highlight the proximity effect for solving the MRS problem. To control the rumor spread, we then consider the network disruption strategy by blocking a set of nodes. We then propose a non-linear formulation of the top-k blockers identification problem in the LTM based on the notion of cohesiveness and introduce some mathematical techniques to linearize the non-linear formulation. The complexity of the integer linear programming can be further reduced by showing that given a seed set, the evolution process in the whole network is equivalent to that in its active sub-network

APA, Harvard, Vancouver, ISO, and other styles

39

Lee, Haehoon. "Development of triple liner system for waste containment facilities." 京都大学 (Kyoto University), 2005. http://hdl.handle.net/2433/144619.

Full text

Abstract:

Kyoto University (京都大学)
0048
新制・課程博士
博士(地球環境学)
甲第11910号
地環博第7号
新制||地環||2(附属図書館)
23690
UT51-2005-N744
京都大学大学院地球環境学舎地球環境学専攻
(主査)教授嘉門雅史, 教授松井三郎, 助教授勝見武
学位規則第4条第1項該当

APA, Harvard, Vancouver, ISO, and other styles

40

Ragnesand, Simon. "Estimating Query Containment by querying a single database instance." Thesis, KTH, Skolan för datavetenskap och kommunikation (CSC), 2016. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-187257.

Full text

Abstract:

This paper examines the possibility of simply querying a database as a fast approximation for the query containment problem and measures its accuracy compared with a proper solver. The algorithm for a Correct Query Containment solver, which is used for comparisons sake, as well as the approximative algorithm is laid out. The database that was used to approximate query containment is also discussed. The results are discussed as well as the areas that this method can be applied to. Further ways to increase the accuracy is discussed. The results show that while the method has some potential the accuracy can be poor. A genetic algorithm is used to increase the accuracy for one set of queries, but the results failed to carry over to other sets of queries.

APA, Harvard, Vancouver, ISO, and other styles

41

Wåreus, Linus, and Max Wällstedt. "Comparison and Implementation of Query Containment Algorithms for XPath." Thesis, KTH, Skolan för datavetenskap och kommunikation (CSC), 2016. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-186467.

Full text

Abstract:

This thesis investigates the practical aspects of implementing Query Containment algorithms for the query language XPath. Query Containment is the problem to decide if the results of one query are a subset of the results of another query for any database. Query Containment algorithms can be used for the purpose of optimising the querying process in database systems. Two algorithms have been implemented and compared, The Canonical Model and The Homomorphism Technique. The algorithms have been compared with respect to speed, ease of implementation, accuracy and usability in database systems. Benchmark tests were developed to measure the execution times of the algorithms on a specific set of queries. A simple database system was developed to investigate the performance gain of using the algorithms. It was concluded that The Homomorphism Technique outperforms The Canonical Model in every test case with respect to speed. The Canonical Model is however more accurate than The Homomorphism Technique. Both algorithms were easy to implement, but The Homomorphism Technique was easier. In the database system, there was performance to be gained by using Query Containment algorithms for a certain type of queries, but in most cases there was a performance loss. A database system that utilises Query Containment algorithms for optimisation would for every issued query have to evaluate if such an algorithm should be used.
Denna rapport undersöker de praktiska aspekterna av att implementera Query Containment-algoritmer för queryspråket XPath. Query Containment är problemet att avgöra om resultaten av en query är en delmängd av resultaten av en annan query, oavsett databas. Query Containment-algoritmer kan användas för ändamålet att optimera queryingprocessen i databassystem. Två algoritmer har implementerats och jämförts, The Canonical Model och The Homomorphism Technique. Algoritmerna har jämförts med avseende på hastighet, lätthet att implementera, exakthet och användbarhet i riktiga databassystem. Prestandatester utvecklades för att mäta exekveringstider för algoritmerna på specifikt framtagna queries. Ett enkelt databassystem utvecklades för att undersöka prestandavinsten av att använda algoritmerna. Slutsatsen att The Homomorphism Technique presterar bättre än The Canonical Model i samtliga testfall med avseende på hastighet drogs. The Canonical Model är dock mer exakt än The Homomorphism Technique. Båda algoritmerna var lätta att implementera, men The Homomorphism Technique var lättare. I databassystemet fanns det en prestandavinst i att använda Query Containment-algoritmer för en viss typ av queries, men i de flesta fall var det en prestandaförlust. Ett databassystem som använder Query Containment-algoritmer för optimering bör för varje query avgöra om en sådan algoritm ska användas.

APA, Harvard, Vancouver, ISO, and other styles

42

Kwon, Sung Moon. "The Effects of Urban Containment Policies on Commuting Patterns." Thesis, Portland State University, 2015. http://pqdtopen.proquest.com/#viewpdf?dispub=3711693.

Full text

Abstract:

During the past several decades, most U.S. metropolitan areas have experienced strong suburbanization of housing and jobs (i.e., urban sprawl). The sprawl that arises from urban growth has become a big issue in many metropolitan areas in the U.S. In response, there has been increased interest in urban containment policies. There are contrasting views (planning-oriented vs. market-oriented) of urban sprawl and urban containment policies. Planning-oriented scholars asserted the problems of `geographic sprawl (GS)' and the positive effects of urban containment polices, while market-oriented scholars asserted the problems of `economic sprawl (ES)' and the negative or negligible effects of urban containment policies. Therefore, this dissertation analyzed whether urban containment policies affect urban sprawl, employment center formation, and urban commuting.

The results of this dissertation indicate that urban containment policies play an important role in affecting urban sprawl, employment center formation, and urban commuting, as well as explaining the contrasting views (planning-oriented vs. market-oriented) of urban containment policies. Implementing urban containment policies can produce positive effects such as compact development, which can promote J-H balance. However, as seen in the relationship between urban containment policies, urban sprawl and housing values, stronger urban containment policies can produce negative effects, such as traffic congestion and an increase in housing prices.

APA, Harvard, Vancouver, ISO, and other styles

43

Mercer, Judith F. "Containment of the spacecraft finite element model correlation process." Thesis, University of Surrey, 2017. http://epubs.surrey.ac.uk/842377/.

Full text

Abstract:

Mathematical finite element models (FEMs) of spacecraft are relied upon for the prediction of loads experienced during launch and flight events. It is essential that the spacecraft is able to survive the launch environment without sustaining damage which could inhibit its ability to carry out its mission. Therefore, ensuring that these FEMs give a realistic representation of the physical spacecraft structural dynamics is an important task. To achieve a high level of confidence in the FEM in question, a correlation activity is conducted. This is the process of applying various metrics to compare computational results, from analysis of the FEM, with corresponding data derived from measurements taken of the physical hardware during vibration testing. Subsequently, updates are applied to the FEM where necessary to achieve an acceptable level of correlation. It is possible for spacecraft FEM correlation exercises to take a considerable amount of time and effort without necessarily achieving an appreciable improvement in the final FEM. As such, this project has been conducted to address the need to ensure that the procedures being applied are as effective and efficient as possible. Various aspects of the spacecraft FEM correlation process have been investigated separately, and interactions between the different stages in the process have also been considered. Two large, unique, scientific spacecraft have been used as example applications in order to carry out these studies. As well as making use of computational results from the spacecraft FEMs, this project has also included comparisons to the results from the corresponding base-shake sine-sweep test campaigns conducted on these structures. A number of noteworthy, and industrially beneficial, findings relating to the effectiveness of the spacecraft FEM correlation process have resulted from these studies: the most appropriate techniques of modal parameter estimation for the considered spacecraft applications have been established; the potential benefits and relative merits of different pre-test sensor placement procedures have been explored; inaccuracies introduced through the use of a commonly applied FEM reduction method have been demonstrated and a superior alternative identified. In addition, the efficiency of the correlation and update process has also been addressed. This has mainly been achieved through investigations concerning the applicability of commonly used target mode selection criteria to spacecraft applications, and the potential benefits of a less widely applied method which takes into consideration the expected loading scenarios to be experienced by the considered structures.

APA, Harvard, Vancouver, ISO, and other styles

44

Hwang, Jyh-Tzong. "Experimental evaluation of a passive water cooled containment concept." Thesis, Massachusetts Institute of Technology, 1994. http://hdl.handle.net/1721.1/28127.

Full text

APA, Harvard, Vancouver, ISO, and other styles

45

Smith, Sinéad Eleanor. "Impact of climate change on contaminated land containment systems." Thesis, University of Cambridge, 2007. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.613405.

Full text

APA, Harvard, Vancouver, ISO, and other styles

46

Dolphyn, Bradley P. "Laminar cracking in post-tensioned concrete nuclear containment buildings." Diss., Georgia Institute of Technology, 2016. http://hdl.handle.net/1853/55017.

Full text

Abstract:

As a critical public safety-related structure, the long-term integrity of post-tensioned concrete containment buildings (PCCs) is necessary for continued operation of the reactors they house. In 2009, during preparations for a steam generator replacement, extensive subsurface laminar cracking was identified in a portion of the Crystal River 3 (CR3) PCC in Florida, and the plant was permanently shut down in 2013. This study investigates potential contributing factors to the identified cracking with particular focus on the effects of high early-age temperatures on the cracking risk of the concrete, on the development of the concrete properties, and on the late-age structural behavior of the concrete. Two planar, full-scale mock-ups of a portion of the CR3 PCC were constructed and instrumented with temperature and strain gauges to monitor the thermal and mechanical behavior during representative concrete curing and post-tensioning loading. Standard- and match-cured concrete specimens were tested for determination of the time- and temperature-dependent development of thermal and mechanical concrete properties, and hydration parameters were determined for the mock-up cement paste for modeling the heat generation in the concrete. These properties and parameters were utilized in 3D finite element analysis of the mock-ups in COMSOL Multiphysics and compared with experimental results. Non-destructive evaluation via shear wave tomography was conducted on the mock-ups to identify flaws and determine the effectiveness of the methods for identifying delaminations between post-tensioning ducts approximately 10 inches beneath the concrete surface. Though early-age thermal stresses were determined not to have caused cracking in the mock-ups, the high early-age concrete temperatures resulted in decreased late-age mechanical properties that were shown to contribute to greater concrete cracking risk when the mock-up was post-tensioned. Tensile stresses exceeding the tensile strength of the concrete were identified along the post-tensioning ducts when biaxial post-tensioning loads were applied in finite element analysis, but the stresses decreased rapidly with increased distance from the ducts. Through parametric modeling, increasing the tensile strength of the concrete was identified as an effective means of reducing the cracking risk in PCCs. Additionally, relationships between the mechanical properties for the standard- and match-cured specimens were identified that could enable prediction of in-place or match-cured concrete properties based only on the results of tests on fog-cured specimens.

APA, Harvard, Vancouver, ISO, and other styles

47

Lee, Elizabeth. "Patterns, Containment, and Meaning in Hugo Wolf's Mörike-Lieder." Thesis, University of Oregon, 2014. http://hdl.handle.net/1794/18321.

Full text

Abstract:

This dissertation focuses upon patterns and concepts of containment within selected Lieder from Hugo Wolf's Mörike collection. More specifically, I focus upon melody as a way of understanding how these found patterns and movements within melodic containers provide meaning. I focus on the melody for two reasons. First, my research here is the first to present such a detailed analysis of the melody. Second, the manuscripts of the Mörike-Lieder indicate that the melodic line was often an important referential point for Wolf. In my analysis, I focus upon six songs: "Der Knabe und das Immlein," "Ein Stündlein wohl vor Tag," "Frage und Antwort," "Lebe wohl," "An eine Äolsharfe," and "Das verlassene Mägdlein." Two central questions guide my analysis. First and most important, how can our knowledge of musical patterns reveal meaning within selected songs of the collection? Each song analyzed presents numerous melodic patterns that enhance our understanding of the poems. Second, how can these patterns lead to a better understanding of some of the ways that the individual songs of the collection relate to one another? As we will with the analysis of "Der Knabe und das Immlein," "Ein Stündlein wohl vor Tag," "Frage und Antwort," and "Lebe wohl," I propose that these four songs form two pairs. Here, the pair of "Frage und Antwort" and "Lebe wohl" create a newly identified song pair. The analysis follows a four-pronged approach applying Steve Larson's theory of musical forces, Candace Brower's theory of musical meaning, George Lakoff and Mark Johnson's cognitive metaphor theory, and Schenkerian analysis. Looking at the Mörike-Lieder from this vantage point will allow us to see how melodies flow in such a way as to suggest motions or metaphors as they relate to the poetic ideas. Known as the "Poet's Composer," I hope to illustrate that Wolf portrayed great sensitivity when setting the poetry and created unique links between specific songs.
2015-03-29

APA, Harvard, Vancouver, ISO, and other styles

48

Kühlbrandt, C. "Containment : an examination of Roma health mediation in Romania." Thesis, London School of Hygiene and Tropical Medicine (University of London), 2017. http://researchonline.lshtm.ac.uk/4645511/.

Full text

Abstract:

This thesis critically examines the ways in which “Roma health” is physically and discursively enacted in communities. Following a year of participant observation of the Roma health mediation programme in Romania, I borrow productive elements from post-colonial and intersectional theories to analyse the tensions and ambivalences that arise from interactions between mediators, community members, health professionals, and local authorities. Beginning with the case of a community which was rehoused in shipping containers after being evicted from their homes, the “container” emerges as an apposite metaphor which I have used to structure my thesis. The thesis investigates the “contained” nature of many segregated communities and how this influences their material and health conditions, as well as asking how this affects the construction of “Roma” communities. I analyse attempts at “containing” ethnicity within a categorical binary of “Roma” and “non-Roma”, while observing how the contestation and negotiation of this binary, along with its implicit hierarchies produces “leaky” categories. The thesis attends to the “containment” of health, exploring how in regard to hygiene, vaccination and reproductive health, participants map concepts of “good” and “bad” patients onto Roma ethnicity. In this context mediators are often constructed as actors who transform “bad patients” into “good patients.” I show how mediators use their involvement in creating “good patients” to produce local meanings of “citizenship” and “non-citizenship”, and how people responded by participating, resisting, negotiating, or perpetuating their positions within these classifications. Finally, while acknowledging the important contribution that health mediators bring to accessing health care, I discuss the mediators’ role in promoting a neoliberal approach to governing Roma communities. I suggest that Roma health mediation could learn from dialogical and emancipatory approaches to participatory interventions in health, which aim for transformative encounters between parties while also fostering critical consciousness and aiming to change communities’ structural environment.

APA, Harvard, Vancouver, ISO, and other styles

49

Bruzek, Alison K. (Allison Kim). "Maximum containment : the most controversial labs in the world." Thesis, Massachusetts Institute of Technology, 2013. http://hdl.handle.net/1721.1/83835.

Full text

Abstract:

Thesis (S.M. in Science Writing)--Massachusetts Institute of Technology, Dept. of Comparative Media Studies, 2013.
Cataloged from PDF version of thesis.
Includes bibliographical references (pages 40-51).
In 2002, following the September 11th attacks and the anthrax letters, the United States allocated money to build two maximum containment biology labs. Called Biosafety Level 4 (BSL-4) facilities, these labs were built to research new vaccines, diagnostics, and treatments for emerging infectious diseases, potential biological weapons, and to contribute to the nation's biodefense. These labs were not the first dramatic reaction to the threat of biowarfare and are in fact, one product of a long history of the country's contentious relationship with biological weapons. Of the two labs created, Boston University Medical Center's National Infectious and Emerging Disease Laboratories (NEIDL) has remained the more controversial given the urban community it resides in. However, increasingly the mandate of these labs has been expanded from biodefense to all infectious disease, regardless of their potential probability for use as a weapon. These include looking at pathogens that could potentially cause a pandemic like SARS, ebola, or smallpox. The repurposing of these labs could make them an invaluable contributor to the United States public health system.
by Alison K. Bruzek.
S.M.in Science Writing

APA, Harvard, Vancouver, ISO, and other styles

50

Umbel, Marissa. "Containment Source Terms for Sodium-Cooled Fast Reactor Accidents." The Ohio State University, 2011. http://rave.ohiolink.edu/etdc/view?acc_num=osu1306506275.

Full text

APA, Harvard, Vancouver, ISO, and other styles

Dissertations / Theses on the topic 'Containment'

Create a spot-on reference in APA, MLA, Chicago, Harvard, and other styles