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Dissertations / Theses on the topic 'Leakage'

Author: Grafiati

Published: 4 June 2021

Last updated: 25 July 2025

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1

Frid, Matilda. "Corpus Leakage." Thesis, Konstfack, Ädellab/Metallformgivning, 2014. http://urn.kb.se/resolve?urn=urn:nbn:se:konstfack:diva-4680.

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We understand the world around us through categorization and classification. But things are morecomplex than that, life is mixed up, flowing and unable to stick to labels. The main purpose ofcorpus is to contain, organize and control food and beverages. Corpus objects are also socialmarkers that have a tradition of being elitist; in both choice of material and in that they imply acertain way of usage. Corpus objects are heavily loaded with tradition and rituals. However, eatingis a common experience, it is an everyday ritual and often something we do with others. How andwhat we eat is an expre

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2

Khandka, Rupak Kumar. "Leakage behind casing." Thesis, Norwegian University of Science and Technology, Department of Petroleum Engineering and Applied Geophysics, 2007. http://urn.kb.se/resolve?urn=urn:nbn:no:ntnu:diva-1633.

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<p>Achieving zonal isolation by cementing annulus space between casing and well bore is an important job in many oil wells. Gas leakage in the annulus has been recognised as a major completion problem in the oil well. A successful cement job results in complete zonal isolation on a permanent basis. To achieve these goals, various factors such as well security, casing centralization, effective mud removal, and gas migration must be considered in the design. The design of the cement must be such that it prevents micro-annuli formation, stress cracking, corrosive fluid invasion, fluid migration,

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3

Gulati, Kanupriya. "Computing leakage current distributions and determination of minimum leakage vectors for combinational designs." Texas A&M University, 2003. http://hdl.handle.net/1969.1/3991.

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Analyzing circuit leakage and minimizing leakage during the standby mode of oper- ation of a circuit are important problems faced during contemporary circuit design. Analysis of the leakage profiles of an implementation would enable a designer to select between several implementations in a leakage optimal way. Once such an im- plementation is selected, minimizing leakage during standby operation (by finding the minimum leakage state over all input vector states) allows further power reduc- tions. However, both these problems are NP-hard. Since leakage power is currently approaching about half

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4

Johansson, Emil, and Kim Myhrman. "GSM/WCDMA Leakage Detection System." Thesis, Linköpings universitet, Elektroniksystem, 2011. http://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-66963.

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Ericsson in Linkoping houses one of the largest test laboratories within thewhole Ericsson Company. Mainly, the laboratories contain equipment forGSM, WCDMA and LTE. To test these systems, a quite large number ofRadio Base Stations are needed. The RBS's are housed in a proportionatelysmall area. Instead of sending signals through the air, cables are used totransfer the RF signals. In this way the equipment communicating witheach other are well speci ed. However this may not be the case if leakageoccur.This thesis work is about developing a system for monitoring the radioenvironment and detect

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5

Pettersson, Anders. "Development of water leakage detectors." Thesis, Linköpings universitet, Institutionen för teknik och naturvetenskap, 2008. http://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-95257.

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One of the highest costs in many apartments for insurance companies is due to water leakage. To prevent leakage from causing damage a detector can be placed in the sensitive areas to warn if a leakage should occur. This kind of installations does however lead to high installation costs, especially in already finished buildings, since they require a lot of wiring for communication. By using a wireless detector these costs could be lowered. In order for this to be achieved a sensor which is suitable to detect such water leakage has been connected to a wireless ZigBee transmitter which in turn is

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6

Khan, Mohammed Ajaz. "Leakage flow in labyrinth seals." Thesis, University of Bradford, 1991. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.482781.

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7

Rushton, Guy James. "High-pressure turbine shroud leakage." Thesis, University of Cambridge, 2004. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.616194.

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8

Demargne, Albert André Jean. "Aerodynamics of stator-shroud leakage." Thesis, University of Cambridge, 2001. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.620983.

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9

Shamout, Mohammad Nawwar. "Leakage detection in pipe networks." Thesis, University of Manchester, 2002. https://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.525479.

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10

Jayakumar, Nikhil. "Minimizing and exploiting leakage in VLSI." [College Station, Tex. : Texas A&M University, 2007. http://hdl.handle.net/1969.1/ETD-TAMU-1249.

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11

Ozkan, Tulay. "Leakage Control By Optimal Valve Operation." Phd thesis, METU, 2008. http://etd.lib.metu.edu.tr/upload/3/12609419/index.pdf.

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The main function of a water distribution system is to supply water in sufficient quantity at appropriate pressure with an acceptable quality and as economically as possible. Water leakage in distribution networks may account from 5% to 50% and even larger of the total water delivered. The amount of leakage in a network is directly related to system service pressure. Therefore, reductions in high service pressures will result in considerable reductions in leakage. A methodology for leakage reduction has been presented in context of a developed computer program, LEAKSOL with two sub-programs.

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12

Stavenes, Thomas. "Subsea Hydraulic Leakage Detection and Diagnosis." Thesis, Norges teknisk-naturvitenskapelige universitet, Institutt for marin teknikk, 2010. http://urn.kb.se/resolve?urn=urn:nbn:no:ntnu:diva-11620.

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The motivation for this thesis is reduction of hydraulic emissions, minimizing of process emergency shutdowns, exploitation of intervention capacity, and reduction of costs. Today, monitoring of hydraulic leakages is scarce and the main way to detect leakage is the constant need for filling of hydraulic fluid to the Hydraulic Power Unit (HPU). Leakage detection and diagnosis has potential, which would be adressed in this thesis. A strategy towards leakage detection and diagnosis is given. The strategy defines three approaches, define an approach, explore the approach and propose a solution. Re

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13

Birek, L. "Leakage forecasting with fuzzy evolving techniques." Thesis, Coventry University, 2016. http://curve.coventry.ac.uk/open/items/33903146-10c8-45d7-9867-79ed974edb10/1.

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The amount of water lost in various leakage events in water networks in the UK not only generates economic loses for the water management companies, but more importantly, threatens supplies to households and businesses in times of severe drought.

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14

Wang, Frank Yi-Fei. "Preventing data leakage in web services." Thesis, Massachusetts Institute of Technology, 2018. http://hdl.handle.net/1721.1/120410.

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Thesis: Ph. D., Massachusetts Institute of Technology, Department of Electrical Engineering and Computer Science, 2018.<br>Cataloged from PDF version of thesis.<br>Includes bibliographical references (pages 77-86).<br>Web services like Google, Facebook, and Dropbox are a regular part of users' lives. However, using these applications can cause sensitive data leakage both on the server and client. On the server-side, applications collect and analyze sensitive user data to monetize it. Consequently, this sensitive data can leak through data breaches or can be accessed by malicious service provid

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15

Davies, John Bleddyn. "CO2 sequestration : the risk of leakage." Thesis, Cardiff University, 2013. http://orca.cf.ac.uk/60057/.

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The Utsira Sand is a major North Sea Saline aquifer. It is currently being utilised as a CO2 sequestration reservoir for the Sleipner project, and its large estimated storage capacity and proximity to suitable infrastructure ensures that it is an attractive prospect for further storage projects. As a forerunning CCS project it is the subject for scrutiny from environmental, industrial and governmental regulatory bodies, with the key concern being the confinement of the CO2 within the reservoir. Regulations are in place to ensure that operators monitor closely the migration of the CO2 plume wit

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16

Dlamini, Moses Thandokuhle. "Combating Data Leakage in the Cloud." Thesis, University of Pretoria, 2020. http://hdl.handle.net/2263/73245.

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The increasing number of reports on data leakage incidents increasingly erodes the already low consumer confidence in cloud services. Hence, some organisations are still hesitant to fully trust the cloud with their confidential data. Therefore, this study raises a critical and challenging research question: How can we restore the damaged consumer confidence and improve the uptake and security of cloud services? This study makes a plausible attempt at unpacking and answering the research question in order to holistically address the data leakage problem from three fronts, i.e. conflict-aware vi

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17

Kathuria, Tarun. "Gate-level Leakage Assessment and Mitigation." Thesis, Virginia Tech, 2019. http://hdl.handle.net/10919/101862.

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Side-channel leakage, caused by imperfect implementation of cryptographic algorithms in hardware, has become a serious security threat for connected devices that generate and process sensitive data. This side-channel leakage can divulge secret information in the form of power consumption or electromagnetic emissions. The side-channel leakage of a crytographic device is commonly assessed after tape-out on a physical prototype. This thesis presents a methodology called Gate-level Leakage Assessment (GLA), which evaluates the power-based side-channel leakage of an integrated circuit at design tim

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18

Ahrabi, Nina. "Low Leakage Asymmetric Stacked Sram Cell." Thesis, University of North Texas, 2014. https://digital.library.unt.edu/ark:/67531/metadc500021/.

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Memory is an important part of any digital processing system. On-chip SRAM can be found in various levels of the memory hierarchy in a processor and occupies a considerable area of the chip. Leakage is one of the challenges which shrinking of technology has introduced and the leakage of SRAM constitutes a substantial part of the total leakage power of the chip due to its large area and the fact that many of the cells are idle without any access. In this thesis, we introduce asymmetric SRAM cells using stacked transistors which reduce the leakage up to 26% while increasing the delay of the cell

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19

Suryawardani, I. Gusti Ayu Oka. "Tourism leakage of accommodation in Bali." Thesis, Paris 1, 2015. http://www.theses.fr/2015PA010071/document.

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Le tourisme est le fer de lance de l'économie balinaise. Mais, les fruits de cette économie du tourisme ne bénéficient pas à toutes les classes de la société balinaise. Cela est dû, entre autres, au manque à gagner lorsque cette industrie importe par exemple des produits ou des services pour répondre aux besoins des touristes (alimentation pour la restauration par exemple). Le calcul du manque à gagner pour l'économie balinaise n’a jamais été fait auparavant. Pour cela, cette recherche est nécessaire. Les objectifs de la recherche étaient : de calculer le manque à gagner pour l'économie balina

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20

Peddiraju, Naga Venkata Satya Pravin Kumar. "Modeling of cryogen leakage through composite laminates." Thesis, Texas A&M University, 2004. http://hdl.handle.net/1969.1/1329.

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Cryogenic composites ﬁnd critical application in the manufacture of fuel tanks for reusable launch vehicles due to signiﬁcant reduction in overall structural weight of the tank. These fuel tanks contain pressurized cryogen such as hydrogen at cryogenic temperatures. Exposure to varying temperatures and mechanical loads resulting from ﬂight cycle, containment of pressurized cryogen causes thermo-mechanical loading of the composite. The thermo-mechanical loading cycles combined with anisotropy of the composite and mismatch in the thermal and mechanical properties of ﬁbers and matrix lead to tran

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21

Qi, Te. "Inverse modeling to predict effective leakage area." Thesis, Georgia Institute of Technology, 2012. http://hdl.handle.net/1853/45942.

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The purpose of this research is to develop a new approach to estimate the effective leakage area using the inverse modeling process as an alternative to the blower door test. An actual office building, which is the head quarter of Energy Efficiency Hub, was used as an example case in this study. The main principle of the inverse modeling process is comparing the real monitor boiler gas consumption with the result calculated from the EnergyPlus model with a dynamic infiltration rate input to find the best estimation of the parameter of effective leakage area (ELA). This thesis considers only t

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22

Haynes, Jonathan Mark. "Axial piston pump leakage modelling and measurement." Thesis, Cardiff University, 2007. http://orca.cf.ac.uk/55178/.

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This thesis is concerned with the dominant leakage characteristics of an axial piston pump. Results have been obtained from a combination of analysis, Computational Fluid Dynamics (CFD) and experimental work, and have added to existing knowledge in this field. The measurement of slipper leakage within an axial piston pump is impossible due to additional leakage from the pistons and between the cylinder barrel and port plate. It may only be determined by analysis and this aspect has been studied via a new CFD simulation. Further progress has been made experimentally on slipper leakage. A new te

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23

Markov, Stanislav Nikolaev. "Gate leakage variability in nano-CMOS transistors." Thesis, University of Glasgow, 2009. http://theses.gla.ac.uk/771/.

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Gate leakage variability in nano-scale CMOS devices is investigated through advanced modelling and simulations of planar, bulk-type MOSFETs. The motivation for the work stems from the two of the most challenging issues in front of the semiconductor industry - excessive leakage power, and device variability - both being brought about with the aggressive downscaling of device dimensions to the nanometer scale. The aim is to deliver a comprehensive tool for the assessment of gate leakage variability in realistic nano-scale CMOS transistors. We adopt a 3D drift-diffusion device simulation approach

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24

Kendall, Haydn G. "Investigation of leakage flux in transformer tanks." Thesis, Cardiff University, 1988. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.329641.

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25

Lewis, Leo Vivian. "Deformation and leakage of aeroengine casing flanges." Thesis, University of Nottingham, 1988. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.320346.

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26

Laughlin, William Edward. "Angiogenesis and vascular leakage in diabetic retinopathy." Thesis, University College London (University of London), 2018. http://discovery.ucl.ac.uk/10043874/.

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Diabetic retinopathy (DR) is the most common microvascular complication of diabetes and a leading cause of blindness. Increased vascular permeability in the retina following blood-retinal barrier (BRB) breakdown is a clinically significant event and a major cause of vision loss. VEGF blockade, despite being the only treatment to improve visual acuity, has a limited effectiveness for a majority of patients. A significant proportion of patients develop resistance to treatment, which implies that other factors are also involved in the pathology of this disease. There is currently a major unmet cl

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27

Sihler, Joachim 1971. "A low-leakage 3-way silicon microvalve." Thesis, Massachusetts Institute of Technology, 2004. http://hdl.handle.net/1721.1/27105.

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Thesis (Ph. D.)--Massachusetts Institute of Technology, Dept. of Mechanical Engineering, 2004.<br>Includes bibliographical references (leaves 127-136).<br>This thesis presents an electrostatically actuated silicon microvalve designed for use in a miniature gas chromatography system for sample preparation and injection. In contrast to prior art, this design combines an integrated low voltage electrostatic microactuator as well as tight sealing capability. The device uses only silicon and silicon dioxide, which allows it to be used in a gas chromatography system for a wide range of chemically co

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28

Durschlag, Hannah (Hanna Rebekah). "Air leakage of Insulated Concrete Form houses." Thesis, Massachusetts Institute of Technology, 2012. http://hdl.handle.net/1721.1/72627.

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Thesis (S.M. in Building Technology)--Massachusetts Institute of Technology, Dept. of Architecture, 2012.<br>This electronic version was submitted by the student author. The certified thesis is available in the Institute Archives and Special Collections.<br>Cataloged from student-submitted PDF version of thesis.<br>Includes bibliographical references (p. 59-63).<br>Air leakage has been shown to increase building energy use due to additional heating and cooling loads. Although many construction types have been examined for leakage, an exploration of a large number of Insulated Concrete Form (I

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29

Smith, Adam (Adam Davidson) 1977. "Maintaining secrecy when information leakage is unavoidable." Thesis, Massachusetts Institute of Technology, 2004. http://hdl.handle.net/1721.1/28744.

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Thesis (Ph. D.)--Massachusetts Institute of Technology, Dept. of Electrical Engineering and Computer Science, 2004.<br>Includes bibliographical references (p. 109-115).<br>(cont.) We apply the framework to get new results, creating (a) encryption schemes with very short keys, and (b) hash functions that leak no information about their input, yet-paradoxically-allow testing if a candidate vector is close to the input. One of the technical contributions of this research is to provide new, cryptographic uses of mathematical tools from complexity theory known as randomness extractors.<br>Sharing a

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30

Reid, Kevin John. "Effect of leakage flows on turbine performance." Thesis, University of Cambridge, 2006. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.613838.

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31

Wampler, Christopher. "Information leakage in encrypted IP video traffic." Thesis, Georgia Institute of Technology, 2014. http://hdl.handle.net/1853/54287.

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We show that information leakage occurs in video over IP traffic, including for encrypted payloads. It is possible to detect events occurring in the field of view of a camera streaming live video through analysis of network traffic metadata including arrival time between packets, packets sizes, and video stream bandwidth. Event detection through metadata analysis is possible even when common encryption techniques are applied to the video stream such as SSL or AES. We have observed information leakage across multiple codes and cameras. Through timestamps added to the x264 codec, we establish a

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32

Mistry, Jatin N. "Leakage power minimisation techniques for embedded processors." Thesis, University of Southampton, 2013. https://eprints.soton.ac.uk/348805/.

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Leakage power is a growing concern in modern technology nodes. In some current and emerging applications, speed performance is uncritical but many of these applications rely on untethered power making energy a primary constraint. Leakage power minimisation is therefore key to maximising energy efficiency for these applications. This thesis proposes two new leakage power minimisation techniques to improve the energy efficiency of embedded processors. The first technique, called sub-clock power gating,can be used to reduce leakage power during the active mode. The technique capitalises on the ob

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33

Muralidharan, Nair Mithun. "Statistical Leakage Estimation Using Artificial Neural Networks." University of Cincinnati / OhioLINK, 2014. http://rave.ohiolink.edu/etdc/view?acc_num=ucin1413471610.

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34

Nsanzubuhoro, Rene. "Pressure-based leakage characterisation of bulk pipelines." Doctoral thesis, Faculty of Engineering and the Built Environment, 2019. http://hdl.handle.net/11427/30938.

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Water losses in distribution systems are a huge problem internationally and also in South Africa where more than a third of the water entering the water supply networks is lost through pipe leaks. With water demand increasing due to population growth and urbanisation, water resources are under greater stress and water supply failures are becoming more common. A great deal of work has been done over the past two decades on managing water losses in distribution systems. The Water Loss Task Force of the International Water Association (IWA) played a leading role in this effort, with the “IWA wate

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35

Martin, Daniel P. "Leakage resilient symmetric cryptography : theory and practice." Thesis, University of Bristol, 2016. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.702904.

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36

Alneyadi, Sultan Saif. "Data Leakage Prevention Using Statistical Semantics Analysis." Thesis, Griffith University, 2016. http://hdl.handle.net/10072/366590.

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Protecting confidential data from being leaked into the public domain is a growing concern among organisations and individuals. Traditionally, data confidentiality has been preserved utilising common security procedures contained within ‘Information Security Policies’, which have limited scope to be individually tailored, along with conventional security mechanisms such as firewalls, virtual private networks and intrusion detection systems. Unfortunately, these standard mechanisms lack the necessary pro-activeness and dynamism required in today’s world of ever-changing technology and innovativ

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37

LUO, Huajiang. "Information leakage and sharing in decentralized systems." Digital Commons @ Lingnan University, 2018. https://commons.ln.edu.hk/otd/35.

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This thesis presents two essays that explore firms’ incentive to share information in a multi-period decentralized supply chain and between competing firms. In the first essay, we consider a two-period supply chain in which one manufacturer supplies to a retailer. The retailer possesses some private demand information about the uncertain demand and decides whether to share the information with manufacturer. If an information sharing agreement is achieved, the retailer will share the observed demand information truthfully to the manufacturer. Then the selling season with two periods starts. In

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38

Hansen, Douglas Dale. "Analytic modeling of leakage in confined aquifer systems /." Diss., ON-CAMPUS Access For University of Minnesota, Twin Cities Click on "Connect to Digital Dissertations", 2002. http://www.lib.umn.edu/articles/proquest.phtml.

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39

Gopalan, Ranganath. "Leakage power driven behavioral synthesis of pipelined asics." [Tampa, Fla.] : University of South Florida, 2005. http://purl.fcla.edu/fcla/etd/SFE0001064.

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40

Chen, Bo. "Role of blood-brain barrier leakage during stroke." Diss., [La Jolla] : University of California, San Diego, 2010. http://wwwlib.umi.com/cr/ucsd/fullcit?p3403853.

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41

Yildirim, Ender. "Design And Implementation Of Low Leakage Mems Microvalves." Phd thesis, METU, 2011. http://etd.lib.metu.edu.tr/upload/12613771/index.pdf.

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This thesis presents analysis, design, implementation, and testing of electrostatically actuated MEMS microvalves. The microvalves are specifically designed for lab-on-a-chip applications to achieve leakage ratios below 0.1 at pressure levels in the order of 101 kPa. For this purpose, two different microvalves are presented in the study. In the proposed designs, electrostatic actuation scheme is utilized to operate the microvalves in normally open and normally closed modes. Characterization of normally open microvalves show that, microvalves with radii ranging between 250

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42

Bartos, Elias, and Kristian Ahlberg. "Minimizing of Drain Leakage on a Scania Retarder." Thesis, KTH, Fordonsdynamik, 2011. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-48587.

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To enhance the drivability and increase safety a major part of Scania’svehicles is fitted with a retarder. The retarder is a complementary brake system that assists the vehicles mechanical brakes. When running a retarder some oil leakage can occur. The main source to the leakage is oil sump ventilation but there is also some contribution from the solenoid valve block that controls the retarder. Test results from the test rig shows that with rather simple methods the oil leakage in form of oil mist can be captured. The efficiency of for instance concept 1 with half the volume and a chicane inte

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43

Johansson, Andreas. "Model-based leakage detection in a pressurized system." Licentiate thesis, Luleå tekniska universitet, Signaler och system, 1999. http://urn.kb.se/resolve?urn=urn:nbn:se:ltu:diva-17121.

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Fault detection and isolation is a potentially powerful tool for achieving security and effective maintenance in various types of processes. The motivation for performing leakage detection in the coal injection plant is mainly the inflammability of pulverized coal. A leakage of air into an injection vessel could have catastrophic consequences. Nonlinear physical gray-box models of the plant are developed. Values of the unknown parameters are estimated by identification. Observers are constructed for these models and the residual is shown to be an estimate of the leakage flow.The Generalized Li

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44

Eliasson, Kerstin. "Urinary leakage and physical activity in young women /." Stockholm : Karolinska institutet, 2005. http://diss.kib.ki.se/2005/91-7140-530-5/.

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45

Durgadoo, Jonathan [Verfasser]. "Controls and impact of Agulhas leakage / Jonathan Durgadoo." Kiel : Universitätsbibliothek Kiel, 2013. http://d-nb.info/1042440271/34.

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46

Palafox, Pepe. "Gas turbine tip leakage flow and heat transfer." Thesis, University of Oxford, 2006. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.427699.

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47

Borg, Andreas, and Christopher Karlsson. "A study of air leakage around window constructions." Thesis, Linköpings universitet, Kommunikations- och transportsystem, 2015. http://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-119964.

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Det finns flera kritiska punkter i en byggnad där luft kan ta sig in, exempelvis genomföringar i klimatskalet för elrör och vattenrör, anslutningar i klimatskalet i form av dörrar och fönster samt skarvar i byggandens tätskikt. Tätningen kring just fönster är en av de detaljer som det tilldelas mest resurser till. Två grundläggande moment är avgörande för hur stort luftläckage det kan bli; hur tätskiktet avslutas kring fönsteröppningen och vilken tätningsprincip som används. Med detta som en grund har syftet med den här studien varit att ta fram vilka fler parametrar kring en fönsterkonstrukti

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48

Mahzari, Pedram. "Prevention of CO2 leakage from underground storage reservoirs." Thesis, Heriot-Watt University, 2016. http://hdl.handle.net/10399/3152.

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49

Ye, Xin. "Side Channel Leakage Analysis - Detection, Exploitation and Quantification." Digital WPI, 2015. https://digitalcommons.wpi.edu/etd-dissertations/47.

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Nearly twenty years ago the discovery of side channel attacks has warned the world that security is more than just a mathematical problem. Serious considerations need to be placed on the implementation and its physical media. Nowadays the ever-growing ubiquitous computing calls for in-pace development of security solutions. Although the physical security has attracted increasing public attention, side channel security remains as a problem that is far from being completely solved. An important problem is how much expertise is required by a side channel adversary. The essential interest is to ex

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50

Kang, Eugene K. (Eugene Kim) 1976. "Control of tip-leakage flows using periodic excitation." Thesis, Massachusetts Institute of Technology, 2000. http://hdl.handle.net/1721.1/80620.

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