Academic literature on the topic 'Leakage quantification'

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Journal articles on the topic "Leakage quantification"

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Meland, E., N. F. Thornhill, E. Lunde, and M. Rasmussen. "Quantification of valve leakage rates." AIChE Journal 58, no. 4 (2011): 1181–93. http://dx.doi.org/10.1002/aic.12630.

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Rutsch, M., J. Rieckermann, and P. Krebs. "Quantification of sewer leakage: a review." Water Science and Technology 54, no. 6-7 (2006): 135–44. http://dx.doi.org/10.2166/wst.2006.616.

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One of the goals of the APUSS project (assessing infiltration and exfiltration on the performance of urban sewer systems) is to assess sewer exfiltration, in order to support cities and operators to define problem-oriented rehabilitation strategies. In this paper, we review various methods currently used for the estimation of exfiltration and discuss data needs and applicability for rehabilitation planning. Although each approach has its individual advantages and drawbacks, we identified pressure tests and tracer methods to have the highest potential for decision support in rehabilitation plan
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Hafner, Sasha D., Charlotte Rennuit, Palle J. Olsen, and Johanna M. Pedersen. "Quantification of leakage in batch biogas assays." Water Practice and Technology 13, no. 1 (2018): 52–61. http://dx.doi.org/10.2166/wpt.2018.012.

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Abstract Avoiding leaks is essential for accurate measurement of biogas production by batch assays. Here we present a simple method for detecting leaks and correcting results, based on the change in bottle mass during incubation. Three experiments were carried out using pure chemicals, wastewater sludge, and other complex substrates to test and demonstrate the method, and leaks were detected in all three. The frequency and magnitude of leakage was related to headspace pressure and the number of times bottle septa had been punctured. Comparison to an independent estimate of leakage in two exper
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Agala, Alaa, Muhammad A. Khan, Feiyang He, and Abdulaaziz Alnuman. "Leakage Quantification in Metallic Pipes under Different Corrosion Exposure Times." Processes 12, no. 7 (2024): 1529. http://dx.doi.org/10.3390/pr12071529.

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The combined effects of aqueous corrosion, stress factors, and seeded cracks on leakage in cast iron pipes have not been thoroughly examined due to the complexity and difficulty in predicting their interactions. This study seeks to address this gap by investigating the interdependencies between corrosion, stress, and cracks in cast iron pipes to optimise the material selection and design in corrosive environments. Leakage experiments were conducted under simulated localised corrosive conditions and internal pressure, revealing that leakage increased from 0 to 25 mL with crack sizes of 0.5 mm,
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Henders, Sabine, and Madelene Ostwald. "Forest Carbon Leakage Quantification Methods and Their Suitability for Assessing Leakage in REDD." Forests 3, no. 1 (2012): 33–58. http://dx.doi.org/10.3390/f3010033.

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Zong, Fu Xing, Ai She Shui, and Hui Wang. "Influence Factors Analysis of Oil Depot Valve Internal Leakage Quantitative Inspection Using Acoustic Emission." Advanced Materials Research 1030-1032 (September 2014): 1318–22. http://dx.doi.org/10.4028/www.scientific.net/amr.1030-1032.1318.

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This paper aims at the oil depot valve internal leakage quantitative inspection using acoustic emission. On the basis of giving the valve internal leakage quantitative model, the main factors which effected quantification of leakage rates are theoretical analyzed and the relative error estimation model is presented. The influence of main factors on the accuracy of leakage quantitative model and the correctness of the relative error estimation model are verified by experiments. Finally, research mentality on how to improve leakage quantitative model is proposed.
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CLARKSON, MICHAEL R., and FRED B. SCHNEIDER. "Quantification of integrity." Mathematical Structures in Computer Science 25, no. 2 (2014): 207–58. http://dx.doi.org/10.1017/s0960129513000595.

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Three integrity measures are introduced: contamination, channel suppression and program suppression. Contamination is a measure of how much untrusted information reaches trusted outputs; it is the dual of leakage, which is a measure of information-flow confidentiality. Channel suppression is a measure of how much information about inputs to a noisy channel is missing from the channel outputs. And program suppression is a measure of how much information about the correct output of a program is lost because of attacker influence and implementation errors. Program and channel suppression do not h
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Gao, Pengfei, Hao Geng, Lijian Yang, and Yuming Su. "Research on the Forward Solving Method of Defect Leakage Signal Based on the Non-Uniform Magnetic Charge Model." Sensors 23, no. 13 (2023): 6221. http://dx.doi.org/10.3390/s23136221.

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Pipeline magnetic flux leakage inspection is widely used in the evaluation of material defect detection due to its advantages of having no coupling agent and easy implementation. The quantification of defect size is an important part of magnetic flux leakage testing. Defects of different geometrical dimensions produce signal waveforms with different characteristics after excitation. The key to achieving defect quantification is an accurate description of the relationship between the magnetic leakage signal and the size. In this paper, a calculation model for solving the defect leakage field ba
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Dudic, Slobodan, Ivana Ignjatovic, Dragan Seslija, Vladislav Blagojevic, and Miodrag Stojiljkovic. "Leakage quantification of compressed air on pipes using thermovision." Thermal Science 16, suppl. 2 (2012): 555–65. http://dx.doi.org/10.2298/tsci120503191d.

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Nondestructive testing methods are increasingly in use. With these methods it is possible to obtain the desired information about the system, without altering or damaging it in any way. This paper examines the possibilities of applying these methods in the quantification of losses incurred by leaking of compressed air from the system in the terms of increasing energy efficiency of the system. The emphasis is on the application of ultrasound detector and IR (infrared) thermographic camera. The potentials and limitations of these technologies are analyzed for leakage quantification on a steel pi
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Kim, Ju-Won, and Seunghee Park. "Magnetic flux leakage–based local damage detection and quantification for steel wire rope non-destructive evaluation." Journal of Intelligent Material Systems and Structures 29, no. 17 (2017): 3396–410. http://dx.doi.org/10.1177/1045389x17721038.

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A magnetic flux leakage method was applied to detect damage when inspecting steel wire rope. A multi-channel magnetic flux leakage sensor head was fabricated using Hall sensors and permanent magnets to adapt to the wire rope. Three types of artificial damage were created on a wire rope specimen. The magnetic flux leakage sensor head scanned the damaged specimen to measure the magnetic flux density while the damage was expanding in three steps. Signal processing processes including the enveloping process based on Hilbert transform were performed to clarify the flux leakage signal due to the dam
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Dissertations / Theses on the topic "Leakage quantification"

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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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Jia, Ruoyu. "CDM Leakage Quantification Methods : A content analysis of CDM methodologies linked to 15 sectoral scope." Thesis, Linköpings universitet, Institutionen för tema, 2014. http://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-108879.

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The paper sheds light upon a specific issue: carbon leakage. Leakage can be understood as an unanticipated net carbon loss or gain, attributable to a climate policy, or reduction activities. Benign leakage effects are harmless. Unsettling are the ones that pose a threat to project’s environmental integrity. The Clean Development Mechanism (CDM) is no exception to such risk. In order to investigate leakage and the corresponding leakage calculation methods addressed in the CDM projects, a qualitative content analysis is conducted on 203 methodologies. Methodology documents serve as ideal textual
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Cheng, Wei. "What can information guess ? : Towards information leakage quantification in side-channel analysis." Electronic Thesis or Diss., Institut polytechnique de Paris, 2021. http://www.theses.fr/2021IPPAT044.

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Les algorithmes cryptographiques jouent un rôle prédominant pour établir une connectivité sécurisée dans notre société numérique actuelle. Ces calculs traitent des informations sensibles telles que des clés de chiffrement, qui sont généralement très exposées lors de la manipulation, ce qui représente une menace énorme pour la sécurité des informations sensibles dans les composants cryptographiques et l'ensemble des systèmes connectés. Dans le domaine de la sécurité des systèmes embarqués, l'analyse des canaux auxiliaires est l'une des techniques les plus puissantes contre les implémentations c
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Beaubien, Stanley Eugene <1965&gt. "The mapping and quantification of CO2 leakage and its potential impact on groundwater quality." Doctoral thesis, Università Ca' Foscari Venezia, 2014. http://hdl.handle.net/10579/6509.

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The present study relates to CO2 leakage from the deep subsurface towards the atmosphere. Work involved writing a computer code to study the impact of different sampling strategies and densities on the capability of a gas flux survey to find and quantify the leakage of CO2, with simulations being performed using both synthetic and real data. In addition, the potential impact of a CO2 leak on drinking water quality was studied by measuring groundwater chemistry along a transect through a major natural CO2 leakage area. The research detailed here relates to both natural leaking systems as well a
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Cunat, Pierre. "Détection et évaluation des fuites à travers les ouvrages hydrauliques en remblai, par analyse des températures réparties, mesurées par fibre optique." Phd thesis, Université de Grenoble, 2012. http://tel.archives-ouvertes.fr/tel-00721827.

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Les fuites au travers des ouvrages hydrauliques en remblai sont les signes précurseurs d'un dysfonctionnementdu dispositif d'étanchéité de l'ouvrage pouvant entraîner leur rupture. La détectionprécoce des fuites et leur quanti_cation est donc primordiale.Les méthodes géophysiques et thermométriques à grand rendement apportent des éléments deréponse pour la détection des fuites, le long des ouvrages à long linéaire, mais l'estimation de leurvitesse, nécessaire à l'évaluation de la dangerosité des fuites, n'est pas encore satisfaisante.Cette étude porte sur la détection et quanti_cation des fuit
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Cohen, Grégory. "Caractérisation, quantification et modélisation du transport et des interactions du CO₂ dans une zone vadose carbonatée : application à une fuite diffuse de CO₂ en contexte de séquestration géologique." Thesis, Bordeaux 3, 2013. http://www.theses.fr/2013BOR30022/document.

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Le réchauffement climatique est lié aux augmentations des concentrations de gaz à effet de serre dans l'atmosphère terrestre et en particulier aux émissions anthropiques de CO₂. La séquestration géologique a la capacité et la longévité potentielles pour diminuer de façon significative les émissions anthropiques de CO₂. Cette séquestration à grande profondeur induit des risques de fuite des réservoirs géologiques. Parmi les scénarios de fuite envisagés, celui d'une fuite diffuse est le plus inquiétant puisque sans surveillance, cette fuite pourrait perdurer et entrainer des séquelles sur l'envi
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Rhino, Kévins. "Caractérisation, quantification et modélisation des processus de transfert et des interactions CO₂-eau-roche en milieu poreux non saturé en contexte de forage lors d'un stockage géologique." Thesis, Bordeaux 3, 2017. http://www.theses.fr/2017BOR30040/document.

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Le stockage géologique du carbone est l’une des techniques les plus prometteuses pour réduire le taux de CO₂ dans l’atmosphère. La séquestration géologique possède la capacité et la longévité potentielles pour diminuer les émissions de CO₂ vers l’atmosphère. Dans le cadre d’injections à l’échelle industrielle, les réservoirs carbonatés peuvent faire partie des sites aptes à stocker du CO₂. Toutefois, ces injections à grandes profondeurs sont sujettes à des risques de fuites du piège géologique lui-même ou des infrastructures liés à l’exploitation du site de stockage. Ainsi, il existe principal
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Li, Chun-Hsien, and 李俊賢. "Computer-Assisted Quantification of Fluorescein Leakage of Choroidal Neovascularization." Thesis, 2007. http://ndltd.ncl.edu.tw/handle/35196943020278090463.

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碩士<br>國立中正大學<br>資訊工程所<br>95<br>Choroidal neovascularization means abnormal blood vessels are developing under the retina, and it is a leading cause of blindness. It is time-consuming for the physician looking for CNV from fluorescein angiographic images. Therefore, we developed a semi-automated system which can segment the area of CNV and extract information which is useful for quantification. We analyzed image capture to know how image degradation happened, and then we adopted an algorithm to restore image degradation. Illumination correction was achieved by estimating the background of the r
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Chen, Shin-Hong, and 陳信宏. "Segmentation and Quantification of Cerebrospinal Fluid Leakage in Magnetic Resonance Myelography." Thesis, 2015. http://ndltd.ncl.edu.tw/handle/99962549623568975917.

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碩士<br>國立雲林科技大學<br>工業工程與管理系<br>103<br>Spontaneous Intracranial Hypotension is a rarely seen disease. In the past years, most references of Cerebrospinal Fluid (CSF) leakage are qualitative method, only few references are quantitative method, but these quantitative methods are indirect measurements, and that can’t know the leakage location. This study develops a quantitative method and direct way to measure the Cerebrospinal Fluid leakage region. Because of Heavily T2-weighted MR myelography background characteristic is unknown, and that will influence output of image segmentation. So experiment
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BEAUBIEN, Stanley Eugene. "The mapping and quantification of CO2 leakage and its potential impact on groundwater quality." Doctoral thesis, 2015. http://hdl.handle.net/11573/762205.

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Il presente lavoro di ricerca è finalizzato allo studio del rilascio in atmosfera di CO2 proveniente da sorgenti sottosuperficiali profonde. Il lavoro riguarda lo sviluppo di un codice dedicato alla modellizzazione delle modalità e densità di campionamento nelle misure di flusso superficiale (utilizzando dati sintetici e reali), al fine di comprendere come tali parametri possano influenzare la capacità di identificare e quantificare il rilascio (leakage) di CO2. Inoltre, nel corso della ricerca, è stato anche valutato il potenziale impatto di tali “perdite” di CO2 sulla qualità delle acque, a
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Book chapters on the topic "Leakage quantification"

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Vavilis, Sokratis, Milan Petković, and Nicola Zannone. "Data Leakage Quantification." In Lecture Notes in Computer Science. Springer Berlin Heidelberg, 2014. http://dx.doi.org/10.1007/978-3-662-43936-4_7.

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Wibmer, Michael, Debmalya Biswas, and Florian Kerschbaum. "Leakage Quantification of Cryptographic Operations." In On the Move to Meaningful Internet Systems: OTM 2010. Springer Berlin Heidelberg, 2010. http://dx.doi.org/10.1007/978-3-642-16934-2_50.

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Gouttière, Alexandre, Dirk Wunsch, Virginie Barbieux, and Charles Hirsch. "Quantification of Operational and Geometrical Uncertainties of a 1.5-Stage Axial Compressor with Cavity Leakage Flows." In Advances in Uncertainty Quantification and Optimization Under Uncertainty with Aerospace Applications. Springer International Publishing, 2021. http://dx.doi.org/10.1007/978-3-030-80542-5_7.

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Alzakri Ekhwan, Ir, A. R. Othman, Andre Franzen, M. F. Othman, and Azliza Ishak. "Leakage Quantification of Bolted Flange Joint Subjected to Different Bolt Sizes and External Load." In Lecture Notes in Mechanical Engineering. Springer Nature Singapore, 2022. http://dx.doi.org/10.1007/978-981-19-1939-8_57.

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Van Ransbeeck, Peter, M. Vermeulen, B. Van Der Smissen, et al. "Experimental and Numerical Flow Modeling towards Refinement of Three-dimensional Echocardiography for Heart Valve Leakage Quantification." In IFMBE Proceedings. Springer Berlin Heidelberg, 2009. http://dx.doi.org/10.1007/978-3-540-89208-3_634.

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Ben Hamouda, Mohamed Fethi, Souha Sari, and Luis Araguas-Araguas. "Use of Geochemical Tracers for the Characterization and Quantification of Water Leakage at the Joumine Dam Site, Tunisia." In Regional Geology Reviews. Springer International Publishing, 2023. http://dx.doi.org/10.1007/978-3-031-18747-6_10.

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Szielasko Klaus, Tschuncky Ralf, Altpeter Iris, Dobmann Gerd, and Boller Christian. "Real-Time Monitoring of Crack Growth Behaviour During Impact and Compact Tension Test with Non-Destructive Testing." In Studies in Applied Electromagnetics and Mechanics. IOS Press, 2014. https://doi.org/10.3233/978-1-61499-354-4-238.

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The basic-safety-principle concerning components in German nuclear power plants (NPP) requires a high material quality in terms of characteristic toughness values. For this purpose, at present, notched-bar impact tests are carried out for example for the determination of the brittle fracture transition temperature. Compact tension tests are performed to determine mechanical and technological characteristics such as the fracture toughness, crack initiation, the crack growth. Because of the scattering in the data, the quantification of the failure behavior in the transition zone of the toughness
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Conference papers on the topic "Leakage quantification"

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Simek, James. "Oblique Field Magnetic Flux Leakage Survey Complements Axial Field Data." In CORROSION 2011. NACE International, 2011. https://doi.org/10.5006/c2011-11302.

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Abstract Pipeline operators worldwide have implemented integrity management programs in an effort to improve operation and maintenance efficiency along with continued safe operation of their systems. Several types of monitoring and data collection activities are incorporated into these programs, with inline inspection tools providing data for detection and quantification of features that may impact the integrity of the pipeline system. Magnetic flux leakage tools are among the most widely used in pipeline systems, typically providing information for metal loss features. The tool configurations
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Desoky, A., C. O'Conner, P. Harris, and S. Hall. "Quantification Of Leakage In Microvessels Using Entropy." In 1989 Medical Imaging, edited by Samuel J. Dwyer III, R. Gilbert Jost, and Roger H. Schneider. SPIE, 1989. http://dx.doi.org/10.1117/12.953216.

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Garafolo, Nicholas G., and Christopher C. Daniels. "The Quantification of Seal-Interface Leakage of an Elastomer Face Seal." In ASME 2011 International Mechanical Engineering Congress and Exposition. ASMEDC, 2011. http://dx.doi.org/10.1115/imece2011-63620.

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Current gas leak rate prediction methods for elastomeric face seals rely heavily on the assumption that all leakage is permeation, rather than leakage across the seal interface [1–3]. To date, there has been no definitive evidence that this is indeed the case. It is essential to investigate the magnitude of interface leakage to facilitate the validation of the current compressible permeation model and to quantify the interfacial leakage for the design of future state-of-the-art face seals. To this end, a series of leak rate experiments is presented on a square-ring seal, manufactured from sili
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Wimmer, Christian. "Experimental Quantification of Gasket Conformability." In ASME 2010 Pressure Vessels and Piping Division/K-PVP Conference. ASMEDC, 2010. http://dx.doi.org/10.1115/pvp2010-26017.

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A measuring method is suggested for quantifying the conformability of gasket materials to macro-irregularities. A series of measurements was performed using this method. In it, the leakage rate achieved on a sealing surface with a considerable, defined irregularity was measured. Results for different gasket materials make it possible to make comparisons and draw conclusions. Finally, the relationship between the surface hardness of the gasket and conformability is discussed.
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Bredeson, Samuel D., Philip R. Troyk, Sungjae Suh, and M. Bak. "Identification and quantification of electrical leakage pathways in floating microelectrode arrays." In 2013 35th Annual International Conference of the IEEE Engineering in Medicine and Biology Society (EMBC). IEEE, 2013. http://dx.doi.org/10.1109/embc.2013.6609807.

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Li, Xinyan, Yuefeng Du, and Cong Wang. "RangeQC: A Query Control Framework for Range Query Leakage Quantification and Mitigation." In 2023 IEEE 43rd International Conference on Distributed Computing Systems (ICDCS). IEEE, 2023. http://dx.doi.org/10.1109/icdcs57875.2023.00017.

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An, L., and N. Sepehri. "Hydraulic actuator leakage quantification scheme using extended Kalman filter and sequential test method." In 2006 American Control Conference. IEEE, 2006. http://dx.doi.org/10.1109/acc.2006.1657415.

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Hale, Stan. "Validation of Valve Leak Quantification With Non-Intrusive Acoustic Emission Technology." In ASME/NRC 2014 12th Valves, Pumps, and Inservice Testing Symposium. American Society of Mechanical Engineers, 2014. http://dx.doi.org/10.1115/nrc2014-5016.

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In the late 1980s and early 90s, several companies tested a range of acoustic devices for monitoring valve leakage during the check-valve diagnostic system research performed at the Utah State Water Research Laboratory as part of two separate nuclear-industry-sponsored initiatives. The acoustic sensor technology and analysis techniques evaluated were found helpful but no progress was made in non-intrusively quantifying the leak rate through the valves tested during these programs. Around that same time, oil &amp; gas companies in the UK were experimenting with detection and quantification of v
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Okolo, Chukwunonso K., and Turgut Meydan. "Axial magnetic field sensing for pulsed magnetic flux leakage hairline crack detection and quantification." In 2017 IEEE SENSORS. IEEE, 2017. http://dx.doi.org/10.1109/icsens.2017.8233983.

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De Almeida, Paulo, Elliane Correia, and Sonia Quintas. "Detection and Quantification of Gas Leakage by Infrared Technology in TEPA Block 17 FPSOs." In SPE International Conference and Exhibition on Health, Safety, Environment, and Sustainability. Society of Petroleum Engineers, 2020. http://dx.doi.org/10.2118/199519-ms.

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Reports on the topic "Leakage quantification"

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Thomas, R., Brandon Schwartz, Curtis Oldenburg, et al. NRAP Recommended Practices for Containment Assurance and Leakage Risk Quantification. Office of Scientific and Technical Information (OSTI), 2022. http://dx.doi.org/10.2172/1906399.

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Duguid, Andrew, Robert Butsch, J. Cary, et al. Quantification of Wellbore Leakage Risk Using Non-destructive Borehole Logging Techniques. Office of Scientific and Technical Information (OSTI), 2014. http://dx.doi.org/10.2172/1164292.

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Koduru, Smitha, and Jason Skow. PR-244-153719-R01 Quantification of ILI Sizing Uncertainties and Improving Correction Factors. Pipeline Research Council International, Inc. (PRCI), 2018. http://dx.doi.org/10.55274/r0011518.

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Operators routinely perform verification digs to assess whether an inline inspection (ILI) tool meets the performance specified by the ILI vendors. Characterizing the actual ILI tool performance using available field and ILI data is a difficult problem due to uncertainties associated with measurements and geometric classification of features. The focus of this project is to use existing ILI and excavation data to develop better approaches for assessing ILI tool performance. For corrosion features, operators are primarily interested in quantifying magnetic flux leakage (MFL) ILI tool sizing err
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Ting, Wang, and Jeff Sutherland. PR-469-143708-R02 In-line Inspection and Assessment for Pipeline Girth Weld Defects. Pipeline Research Council International, Inc. (PRCI), 2018. http://dx.doi.org/10.55274/r0011487.

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During 2010 to 2012, the United States reported a total of eight girth weld failures and economic loss amounted to $4,382,000 [Summarized from data provided by PHMSA, http://www.phmsa.dot.gov/pipeline/library/data-stats/flagged-data-files]. PRCI has several projects (current and historic) that investigate various integrity concerns of vintage girth weld defects. Globally, the integrity of girth welds of oil and gas pipelines has increased as a concern due to failures with high consequences. A primary integrity issue to pipelines that has been the motivation of this project, considers defects o
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