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Littérature scientifique sur le sujet « Measurement monitoring »

Auteur : Grafiati

Publié le 23 septembre 2023

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Articles de revues sur le sujet "Measurement monitoring"

Standing, J. R., et S. R. Buss. « Measurement and monitoring ». Quarterly Journal of Engineering Geology and Hydrogeology 53, n^o 3 (16 juillet 2020) : 349–51. http://dx.doi.org/10.1144/qjegh2020-119.

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Markuze, Yu I., Anh Cuong Le, Thi Thu Nguyen et Hai Nam Dinh. « Monitoring coarse measurement errors and initial data ». Geodesy and Cartography 937, n^o 7 (20 août 2018) : 11–16. http://dx.doi.org/10.22389/0016-7126-2018-937-7-11-16.

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Rough errors are a consequence of the observer’s miscalculations, device malfunctions, their displacements at the time of measurement, incorrect measurement techniques chosen, rapid and sharp deterioration of external conditions and other causes. That is why, one of the problems in the theory of mathematical processing geodetic measurements is culling measurements containing gross errors. In the last two decades received recursion equalization has been widespread. It enables evaluating the unknown while new measurements are added to the network and measurements with gross errors are deleted [3, 4]. In the article, a complementary recurrent equalization is developed. It is original, convenient and recommended for wide application in production.

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Kapalo, Peter, Orest Voznyak, Vasyl Zhelykh, Hanna Klymenko et Khrystyna Myroniuk. « AIR QUALITY MONITORING IN A SELECTED CLASSROOM ». Theory and Building Practice 2022, n^o 1 (20 juin 2022) : 71–79. http://dx.doi.org/10.23939/jtbp2022.01.071.

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As part of the research entitled "Experimental determination of the optimal amount of air in a selected room in Ukraine based on measurements of carbon dioxide concentration", an experimental measurement was performed in a selected school room in Ukraine. The aim of the experimental measurement was to determine the course of air temperature, relative humidity and carbon dioxide concentration during the teaching process. From the carbon dioxide concentration curves, it is possible to calculate the required ventilation intensity in the room. This article documents the results of measuring the air temperature and the carbon dioxide concentration in the room, as well as the reactions of people in the room to the air quality.

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Hicks, J. M. « In situ monitoring. » Clinical Chemistry 31, n^o 12 (1 décembre 1985) : 1931–35. http://dx.doi.org/10.1093/clinchem/31.12.1931.

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Abstract In situ monitoring has been increasingly accepted during the past five years. This approach has been applied to measurement of gas tensions such as pO2 and pCO2, to pH and ions, to the assessment of jaundice by measurement of bilirubin, and to analysis for 14CO2 after administration of labeled antipyrine and aminopyrine, for evaluation of hepatic damage. Various techniques have been developed for in situ monitoring: transcutaneous measurements, implantable sensors, ingestible radio-sensitive pills, and breath analysis. Here I review some of these approaches and their limitations. These limitations include the sparsity of circumstances under which the technique can be applied and the probable increase in health-care costs.

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Makarov, G. N. « Three-alternative measurement monitoring ». Measurement Techniques 33, n^o 6 (juin 1990) : 530–33. http://dx.doi.org/10.1007/bf00977906.

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Shakher, Chandra. « OS01W0261 Opto-electronic techniques for measurement/monitoring of vibration ». Abstracts of ATEM : International Conference on Advanced Technology in Experimental Mechanics : Asian Conference on Experimental Mechanics 2003.2 (2003) : _OS01W0261. http://dx.doi.org/10.1299/jsmeatem.2003.2._os01w0261.

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Lima, Frederico, Almothana Albukhari, Rui Zhu et Ulrich Mescheder. « Contactless Sleep Monitoring Measurement Setup ». Proceedings 2, n^o 13 (20 novembre 2018) : 1083. http://dx.doi.org/10.3390/proceedings2131083.

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In this work, a contactless measurement setup based on a low-cost weighing scale sensor is presented. The positioning of the sensor is a key point in our work with ballistocardiographic (BCG) measurements. This was demonstrated using a strain-gauge sensor placed at the head of the mattress to record the BCG signals, while an unsupervised machine learning algorithm was implemented to detect respiratory and cardiac cycles from patients laying in different postures. Comparison of BCG with electrocardiography (ECG) has shown the ability to detect, at least, 75% of every single heartbeat with the suggested setup and algorithm irrespective of patient’s postures.

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Holt, David W. « Monitoring mycophenolic acid ». Annals of Clinical Biochemistry : International Journal of Laboratory Medicine 39, n^o 3 (1 mai 2002) : 173–83. http://dx.doi.org/10.1258/0004563021902035.

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The immunosuppressive agent mycophenolate mofetil is a prodrug for the active compound mycophenolic acid. Following organ transplantation, it is used mostly in combination with other immunosuppressive drugs, but it has also been used as primary therapy. Although in the pivotal clinical studies the drug was given in fixed doses, there has been substantial interest in the measurement of mycophenolic acid in plasma as a guide to optimizing therapy. Data have emerged which indicate that the metabolism of the compound is more complex than was originally thought and that variability in exposure to the drug, assessed by area under the time-concentration curve, is an important determinant of efficacy. This article highlights basic pharmacokinetic and pharmacodynamic data for mycophenolic acid, which underlie the rationale for its measurement. These data are then set in the context of providing a routine service for the measurement of the drug with either of the analytical techniques currently available - immunoassay or high performance liquid chromatography. There are a number of issues regarding the clinical interpretation of mycophenolic acid measurements which are yet to be resolved. Centres contemplating the introduction of such a service will need to keep abreast of a rapidly evolving literature.

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Michel, Chris, et Sina Keller. « Advancing Ground-Based Radar Processing for Bridge Infrastructure Monitoring ». Sensors 21, n^o 6 (20 mars 2021) : 2172. http://dx.doi.org/10.3390/s21062172.

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In this study, we further develop the processing of ground-based interferometric radar measurements for the application of bridge monitoring. Applying ground-based radar in such complex setups or long measurement durations requires advanced processing steps to receive accurate measurements. These steps involve removing external influences from the measurement and evaluating the measurement uncertainty during processing. External influences include disturbances caused by objects moving through the signal, static clutter from additional scatterers, and changes in atmospheric properties. After removing these influences, the line-of-sight displacement vectors, measured by multiple ground-based radars, are decomposed into three-dimensional displacement components. The advanced processing steps are applied exemplarily on measurements with two sensors at a prestressed concrete bridge near Coburg (Germany). The external influences are successfully removed, and two components of the three-dimensional displacement vector are determined. A measurement uncertainty of less than 0.1 mm is achieved for the discussed application.

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Evans, Sue M., Peter A. Cameron, Paul Myles, Johannes Stoelwinder et John J. McNeil. « Measurement, monitoring and clinical governance ». Medical Journal of Australia 183, n^o 10 (novembre 2005) : 543. http://dx.doi.org/10.5694/j.1326-5377.2005.tb07162.x.

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Thèses sur le sujet "Measurement monitoring"

Bruce, Julie. « Measurement and monitoring of surgical adverse events ». Thesis, University of Aberdeen, 2004. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.408939.

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The aim of this thesis is to investigate the validity of the measurement and the monitoring of surgical adverse events. Objectives: 1. To select surgical adverse events for detailed evaluation; 2. To investigate events with different epidemiological characteristics and attributes to assess the validity of their measurement and monitoring. Three events were selected: surgical wound infection, anastomotic leak and chronic post-surgical pain. Methods: Four systematic reviews and two epidemiological studies were conducted to investigate surgical wound infection, anastomotic leak and chronic post-surgical pain. A total of 41 definitions of wound infection were identified in the surgical literature, with little evidence of formal theoretical assessment of validity and reliability. Modified versions of Centres for Disease Control (CDC) definitions are currently used by UK nosocomial surveillance systems, although the impact of these modifications has not been evaluated. A total of 56 definitions for anastomotic leak were found. Although a national surgical consensus group proposed a definition for anastomotic leak, no evidence of its use was found in the surgical literature. The cohort study of 435 patients undergoing gastrointestinal surgery found that patients with anastomotic leak had poorer long-term survival at four years postoperatively, although patient numbers were small. The systematic review of chronic pain after cardiac study identified six prevalence studies worldwide, none of which used ‘standard’ definitions proposed by the International Association of the Study of Pain (IASP). A total of 1080 patients undergoing cardiac surgery at one regional cardiothoracic centre were assessed at two years postoperatively; the cumulative prevalence of chronic pain was 39% using a definition based on timing, location and pain characteristics.

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Panzardi, Enza. « Measurement systems for industrial plants condition monitoring ». Doctoral thesis, Università di Siena, 2019. http://hdl.handle.net/11365/1072401.

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Negli ultimi decenni, il mercato mondiale dell’energia ha dovuto far fronte ad una richiesta di produzione sempre crescente e ad un costante mutamento del settore industriale, sempre più attento all’impatto ambientale e all’innovazione tecnologica. Oltre agli impianti per la produzione di energia da fonti rinnovabili, quelli a ciclo combinato o a cogenerazione basati su turbine a gas sono i più diffusi, in quanto garantiscono maggiore rendimento e minori emissioni, a parità di energia prodotta rispetto agli altri impianti a combustione disponibili nel settore. Inoltre, offrono una maggiore flessibilità operativa consentendo una migliore modulabilità del carico. In questo contesto, una sempre maggiore spinta innovativa ha coinvolto gli operatori del settore nel mettere a punto nuove tecnologie di controllo e monitoraggio degli impianti per garantire una maggiore affidabilità e rimanere competitivi a lungo termine. A tale scopo, sono diverse le tecniche che possono essere implementate per raccogliere informazioni sulle condizioni operative delle macchine, consentendo quindi un rilevamento e una manutenzione precoce dei guasti che posso avere un forte impatto sulla produttività e sulla riduzione complessiva dei costi. Il mio lavoro di tesi si inserisce in questo contesto applicativo. L’obiettivo finale è stato quello di sviluppare delle tecniche di monitoraggio innovative e a basso costo basate sul principio di induzione elettrostatica per il rilevamento di detriti solidi, generati da guasti o malfunzionamenti, nel percorso dei gas di scarico di una turbomacchina. In questo lavoro vengono presentati diversi sistemi innovativi di monitoraggio basati sull’utilizzo di sensori elettrostatici e amplificatori di carica, con prestazioni migliorate che possono essere impiegati anche in altre applicazioni che coinvolgono processi di combustione o in impianti industriali che impiegano tubazioni per il trasporto pneumatico. Il sistema di rilevamento consiste in uno o più sensori elettrostatici montati all’interno del condotto di scarico della turbomacchina i quali rilevano le particelle con carica elettrostatica presenti nel flusso di gas. L’amplificatore di carica ha il compito di convertire il segnale di carica in un segnale di tensione adatto ad essere acquisito e processato da un sistema appositamente implementato. La tecnica di misura implementata sfrutta le informazioni fornite dal modello fisico usato per descrivere il problema di misura e le caratteristiche geometriche del set-up scelto per i sensori per ricostruire la traiettoria, il livello di carica, la posizione e la velocità della particella carica rilevata. Il sistema di misura realizzato è stato caratterizzato in un ampio intervallo di condizioni operative e studiato sia dal punto di vista teorico che sperimentale. In particolare, è stato sviluppato un sistema di misura basato su array circolari di tre sensori elettrostatici per il quale si riesce ad ottenere un errore relativo inferiore all’1% sulla stima dei parametri necessari alla ricostruzione della traiettoria, della velocità e della carica della particella in movimento rilevata. Inoltre, dalla caratterizzazione teorica dell’accuratezza di misura del sistema emerge come quest’ultima sia indipendente dalla direzione assunta dalla particella in movimento rispetto alla disposizione dei sensori, garantendo un’accuratezza isotropica planare. Inoltre, rimanendo nello stesso ambito applicativo, una parte di questo lavoro ha riguardato lo studio e la realizzazione di una sonda capacitiva triassiale. La particolarità del dispositivo proposto è quella di essere realizzato per essere depositato direttamente sul componente dell’impianto da monitorare e per questo definita: "on-component. Un prototipo del sensore è stato realizzato con tecnologia serigrafica e il suo comportamento caratterizzato in frequenza, dimostrando caratteristiche comparabili alle comuni sonde triassiali ("bulk").

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Monserrat, Hernández Oriol. « Deformation measurement and monitoring with Ground-Based SAR ». Doctoral thesis, Universitat Politècnica de Catalunya, 2012. http://hdl.handle.net/10803/81557.

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The Ground-Based Synthetic Aperture Radar (GB-SAR) is a relatively new technique, which in the last ten years has gained interest as deformation measurement and monitoring tool. The GB-SAR technique is based on an imaging radar-based sensor, which o ers high sensitivity to small displacements, in the region of sub-millimetres to millimetres, long-range measurements, which can work up to some kilometres, and massive deformation measurement capability. These features confer to the GB-SAR technique interesting advantages with respect to other point-wise deformation measurement techniques. The process of estimating deformation from the GB-SAR data is not straightforward: it requires complex data processing and analysis tools. This dissertation is focused on these tools, covering the whole deformation estimation process. This thesis collects the main research results achieved on this topic during my work at the Active Remote Sensing Unit of the Institute of Geomatics. Two di erent approaches for measuring deformation with GB-SAR data are described and discussed. The irst one is the interferometric approach, based on the exploitation of the phase component of the GB-SAR data, which is the commonly used GB-SAR method. The second one is a non-interferometric approach, which exploits the amplitude component of the GB-SAR data, o ering an interesting alternative way to exploit the GB-SAR data. This dissertation has two main objectives. The first one is presenting, step by step, a complete interferometric GB-SAR procedure for deformation measuring and monitoring. The second one is presenting two new algorithms, which represent the most innovative part of this thesis. The first algorithm faces the phase unwrapping problem, providing an automatic solution for detecting and correcting unwrapping errors, which is called 2+1D phase unwrapping. The second algorithm is the base of the above mentioned non- interferometric approach, which overcomes some of the most critical limitation of GB-SAR interferometry, at the expense of getting less precise deformation estimates. The dissertation is divided in 6 chapters. The first one is the introduction, while the second one provides an overview of GB-SAR interferometry, introducing the main aspects that are the basics of the subsequent chapters. Chapter 3 describes a complete GB-SAR processing chain. Chapters 4 and 5 contain the most original part of the dissertation, i.e. the 2D+1 phase unwrapping algorithm, and the non-interferometric approach. Finally, in Chapter 6 the conclusions are discussed and further research is proposed.
El radar terrestre d’obertura sintètica (GB-SAR) és una tècnica relativament nova que, en els últims deu anys, ha guanyat interès com a eina per a mesurar i monitorar deformacions. La tècnica GB-SAR es basa en un sistema radar amb capacitat per proporcionar imatges, que ofereix una alta sensibilitat a petits desplaçaments, d’ordre mil·limètric o submil·limètric, que és capaç de mesurar a llargues distàncies (alguns km) i que té una alta capacitat per fer mesures massives. Aquestes característiques donen a la tècnica interessants avantatges respecte a altres tècniques clàssiques de mesura de deformacions, típicament basades en mesures puntuals. Derivar mesures de deformació a partir de dades GB-SAR no és un procés senzill, ja que requereix uns procediments complexos de processat i anàlisi de dades. Aquesta tesi es centra en aquests processos. Aquesta tesi recull alguns dels resultats més destacats de la investigació que he desenvolupat sobre aquest tema a la unitat de Teledetecció Activa de l'Institut de Geomàtica. Al llarg del document es descriuen dues aproximacions diferents per mesurar deformacions amb GB-SAR. Una es basa en la explotació de la tècnica de la interferometria, és a dir explotant la component de la fase de les imatges GB-SAR: és la tècnica GB-SAR usada habitualment. La segona, anomenada tècnica no-interferomètrica, es basa en la component de l’amplitud de les dades GB-SAR i ofereix una interessant alternativa a la primera. La tesi acompleix dos objectius principals. En primer lloc presenta un procediment complet per la mesura i monitoratge de deformacions mitjançant interferometria GB-SAR. En segon lloc, descriu dos nous algorismes que resolen problemes específics de la interferometria clàssica aplicada al GB-SAR i que representen la part més innovadora d’aquesta tesi. El primer algorisme aborda un dels problemes oberts de la interferometria, el phase unwrapping, proposant un mètode automàtic per detectar-ne i corregir-ne els errors. El segon algorisme proposa un nou mètode per a l'explotació de les dades GB-SAR per mesurar deformacions sense utilitzar la interferometria. La estructura de la tesi consisteix en sis capítols. Després de la introducció, el Capítol 2 proporciona una visió general de la interferometria GB-SAR, introduint els conceptes principals utilitzats en la tesi. En el tercer capítol es descriu una cadena de processament basada en GB-SAR interferomètric. Els capítols quart i cinquè contenen la part més original de la tesi: l'algorisme de phase unwrapping i el mètode no-interferomètric per la mesura de deformacions. Finalment, es discuteixen les conclusions principals i es proposen futures línies d’investigació.

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Guo, Dongsheng. « Power transformer condition monitoring with partial discharge measurement ». Thesis, Glasgow Caledonian University, 2006. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.443183.

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Tri, Rachmanto. « Monitoring of biodiesel transesterification process using impedance measurement ». Thesis, Liverpool John Moores University, 2014. http://researchonline.ljmu.ac.uk/4337/.

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Alternative diesel fuels have been the subject of extensive investigation. Fatty acid methyl ester (FAME) based Biodiesel manufactured from vegetable oils or animal fats is an excellent candidate to replace common diesel fuel being renewable, non-toxic and often giving rise to reduced exhaust gas emissions. The transesterification process has been commonly and widely used to produce biodiesel from vegetable oil or animal fat. Vegetable oils or animal fats generally have viscosities higher than standard diesel oil. This means that it is necessary to reduce the viscosity by means of reacting vegetable oil with alcohol in the presence of a suitable catalyst. The target product for this reaction is methyl ester, with glycerol and potentially soap produced as by products with the process of transesterification. Methylester (Biodiesel) is produced by converting triglycerides to alkylesters. A batch transesterification process has two significant mechanisms, and exhibits a mass transfer controlled region that precedes a second order kinetically controlled region. In order to control the conversion process it is useful to employ process monitoring. In particular monitoring of the mass transfer processes that limits the initial reaction rates could prove to be beneficial in allowing for process optimization and control. This thesis proposes the use of a new method of biodiesel process monitoring using low frequency (15kHz) impedance sensing which is able to provide information regarding the progress of mass transfer and chemical reaction during biodiesel production. An interdigitated (ID) sensor has been used to monitoring the biodiesel process The ID sensor is of simple construction and consists of two sets of interleaved electrodes (fingers). The two sets of electrodes are separated by a gap and when an AC excitation voltage is applied across the interleaved electrodes an oscillating electric field is developed. The response of the fluid surrounding the sensor to the applied excitation was then used to determine progress of the chemical reaction by evaluating the real and complex impedance. A significant and unambiguous change in the components of impedance has been shown to occur during mixing (mass transfer) and transesterification. The impedance measurements gained during transesterification were then used for the development of a system model. A systematic approach was used to select mathematical models and system identification techniques were evaluated. The system identification investigation used real process measurement data in conjunction with the Matlab system identification toolbox.

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Cherednichenko, O. Yu, Yu Gontar et A. Matveyev. « Towards monitoring and evaluation information system development ». Thesis, NTU "KhPI", 2017. http://repository.kpi.kharkov.ua/handle/KhPI-Press/38250.

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Kumar, Abhishek. « Network Data Streaming : Algorithms for Network Measurement and Monitoring ». Diss., Available online, Georgia Institute of Technology, 2005, 2005. http://etd.gatech.edu/theses/available/etd-11172005-143837/.

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Thesis (Ph. D.)--Computing, Georgia Institute of Technology, 2006.
Dr. Mostafa Ammar, Committee Member ; Dr. Mark Crovella, Committee Member ; Dr. Constantinos Dovrolis, Committee Member ; Dr. Ellen Zegura, Committee Chair ; Dr. Jun Xu, Committee Chair. Vita. Includes bibliographical references.

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Araujo, Cespedes Fabiola. « Respiratory Monitoring System Based on the Thoracic Expansion Measurement ». Scholar Commons, 2012. http://scholarcommons.usf.edu/etd/3953.

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The purpose of this reasearch was to develop a respiratory monitoring system using a reflective object sensor based belt to measure the thoracic expansion of a neonatal for future application at the medical center of the Universidad Evangelica Boliviana (UEB). This medical center, being founded by the UEB University, is dedicated to help and serve the poor and currently has no respiratory monitoring system. The methodology used was first to build and test the respiratory sensor belt and test the relationship between the blet expansion and the voltage generated. The, to incorporate the respiratory sensor belt in a system that would allow individual testing as well as group testing in a wireless network. The system was simulated using an expandable plastic container that was expanded and extracted periodically, registering the results in a MATLAB software. The system gave successful results and generated the frequency results of each cycle, average frequency and deviation frequency. The system demonstrated to be reliable and to have repeatable results.

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Begg, David William. « Advanced strain measurement techniques for monitoring full scale structures ». Thesis, University of Portsmouth, 1992. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.316720.

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Bisht, Saurabh Singh. « Vibration Measurement Based Damage Identification for Structural Health Monitoring ». Diss., Virginia Tech, 2010. http://hdl.handle.net/10919/77301.

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The focus of this research is on the development of vibration response-based damage detection in civil engineering structures. Modal parameter-based and model identification-based approaches have been considered. In the modal parameter-based approach, the flexibility and curvature flexibility matrices of the structure are used to identify the damage. It is shown that changes in these matrices can be related to changes in stiffness values of individual structural members. Using this relationship, a method is proposed to solve for the change in stiffness values. The application of this approach is demonstrated on the benchmark problem developed by the joint International Association of Structural Control and American Society of Civil Engineers Structural Health Monitoring task group. The proposed approach is found to be effective in identifying various damage scenarios of this benchmark problem. The effect of missing modes on the damage identification scheme is also studied. The second method for damage identification aims at identifying sudden changes in stiffness for real time applications. It is shown that the high-frequency content of the response acceleration can be used to identify the instant at which a structure suffers a sudden reduction in its stiffness value. Using the Gibb's phenomenon, it is shown why a high-pass filter can be used for identifying such damages. The application of high-pass filters is then shown in identifying sudden stiffness changes in a linear multi-degree-of-freedom system and a bilinear single degree of freedom system. The impact of measurement noise on the identification approach is also studied. The noise characteristics under which damage identification can or cannot be made are clearly identified. The issue of quantification of the stiffness reduction by this approach is also examined. It is noted that even if the time at which the reduction in stiffness happens can be identified, the quantification of damage requires the knowledge of system displacement values. In principle, such displacements can be calculated by numerical integration of the acceleration response, but the numerical integrations are known to suffer from the low frequency drift error problems. To avoid the errors introduced due to numerical integration of the acceleration response, an approach utilizing the unscented Kalman filter is developed to track the sudden changes in stiffness values. This approach is referred to as the adaptive unscented Kalman filter (AUKF) approach. The successful application of the proposed AUKF approach is shown on two multi-degree of freedom systems that experience sudden loss of stiffness values while subjected to earthquake induced base excitation.
Ph. D.

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Livres sur le sujet "Measurement monitoring"

W, Ley Thomas, Washington State University. Cooperative Extension., Oregon State University. Extension Service., University of Idaho. Cooperative Extension System. et United States. Dept. of Agriculture., dir. Soil water monitoring & measurement. [Olympia, Wash.] : Washington State University Cooperative Extension, 1994.

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Wallace, Wanda A. Performance measurement and risk monitoring. Boston : RIA Group/Warren, Gorham & Lamont, 1997.

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L, Nimis P., Scheidegger Christoph et Wolseley P. A, dir. Monitoring with lichens : Monitoring lichens. Dordrecht : Kluwer Academic, 2002.

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Vasilenko, V. N. Monitoring zagri͡a︡znenii͡a︡ snezhnogo pokrova. Leningrad : Gidrometeoizdat, 1985.

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Hyde, Anthony T. Radiation monitoring methods. Visalia, Calif : Sampson Pub. Co., 2007.

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S, Zaĭt͡s︡ev A., et Soviet Union. Kabinet Ministrov. Komitet gidrometeorologii., dir. Monitoring zagri͡a︡znenii͡a︡ atmosfery v gorodakh. Leningrad : Gidrometeoizdat, 1991.

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Organization, World Meteorological, dir. Manual on water-quality monitoring. Geneva, Switzerland : Secretariat of the World Meteorological Organization, 1988.

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M, Younos Tamim, dir. Advances in water monitoring research. Highlands Ranch, Colo : Water Resources Publications, 2002.

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G, Clarke Andrew, dir. Industrial air pollution monitoring. London : Chapman & Hall, 1998.

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Chapitres de livres sur le sujet "Measurement monitoring"

Corcione, Nadia, Francesca Dalla Corte et Tommaso Mauri. « Measurement of Pleural Pressure ». Dans Cardiopulmonary Monitoring, 485–91. Cham : Springer International Publishing, 2021. http://dx.doi.org/10.1007/978-3-030-73387-2_33.

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Alexopoulos, Konstantinos D., Sheldon Magder et Gordan Samoukovic. « Measurement of Cardiac Output ». Dans Cardiopulmonary Monitoring, 283–308. Cham : Springer International Publishing, 2021. http://dx.doi.org/10.1007/978-3-030-73387-2_20.

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Knight, E. A., et J. R. Pugh. « Automated measurement ». Dans Sensor Systems for Environmental Monitoring, 268–95. Dordrecht : Springer Netherlands, 1997. http://dx.doi.org/10.1007/978-94-009-1571-8_8.

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Ferla, Maurizio, Gabriele Nardone, Arianna Orasi, Marco Picone, Pierpaolo Falco et Enrico Zambianchi. « Sea Monitoring Networks ». Dans Measurement for the Sea, 211–35. Cham : Springer International Publishing, 2022. http://dx.doi.org/10.1007/978-3-030-82024-4_9.

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Rembovsky, Anatoly M., Alexander V. Ashikhmin, Vladimir A. Kozmin et Sergey M. Smolskiy. « Measurement of Radio Signals and Interferences Parameters ». Dans Radio Monitoring, 269–95. Cham : Springer International Publishing, 2018. http://dx.doi.org/10.1007/978-3-319-74277-9_6.

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Lazebnik, George E., et Gregory P. Tsinker. « Soil Pressure Measurement Methods : Measurement Specifics and Instruments ». Dans Monitoring of Soil-Structure Interaction, 1–22. Boston, MA : Springer US, 1998. http://dx.doi.org/10.1007/978-1-4615-5979-5_1.

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Zhou, Jian-Fang, et Jian-Xin Zhou. « Lung Volume Measurement ». Dans Respiratory Monitoring in Mechanical Ventilation, 177–205. Singapore : Springer Singapore, 2021. http://dx.doi.org/10.1007/978-981-15-9770-1_4.

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Scarrett, Douglas, et Jan Wilcox. « Performance measurement and monitoring ». Dans Property Asset Management, 279–96. Fourth edition. | Abingdon, Oxon ; New York, NY : Routledge, 2018. : Routledge, 2018. http://dx.doi.org/10.1201/9781315628943-10.

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Ammons, David N., et Dale J. Roenigk. « Performance measurement and monitoring ». Dans Tools for Decision Making, 38–59. 3^e éd. London : Routledge, 2021. http://dx.doi.org/10.4324/9781003129431-5.

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Meidert, Agnes S., et Bernd Saugel. « Evaluation of Devices for Measurement of Blood Pressure ». Dans Cardiopulmonary Monitoring, 273–81. Cham : Springer International Publishing, 2021. http://dx.doi.org/10.1007/978-3-030-73387-2_19.

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Actes de conférences sur le sujet "Measurement monitoring"

« Comparative Assessment of Distributed Strain Measurement Technologies ». Dans Structural Health Monitoring. Materials Research Forum LLC, 2021. http://dx.doi.org/10.21741/9781644901311-3.

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Abstract. Fibre optic (FO) distributed strain sensing technology has introduced a significant new capability for structural health monitoring (SHM). FO sensing (FOS) offers a simpler installation process with improved resistance to corrosion and electromagnetic interference compared to traditional electrical resistance foil strain gauges (FSGs) which unlike FOS is limited to single point measurements. Previous FO distributed strain measurement studies at the Defence Science and Technology Group showed good correlation between strain measurements derived from a proprietary continuous fibre grating system and FSGs. This paper compares a commercially available, non-proprietary FO sensing system and digital image correlation (DIC) against industry standard FSGs and finite element analysis (FEA) predictions.

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Nakashima, T. « Development of deflection measurement method using smart cables with distributed fiber optic sensors ». Dans Structural Health Monitoring. Materials Research Forum LLC, 2023. http://dx.doi.org/10.21741/9781644902455-30.

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Abstract. The monitoring behavior of civil engineering structures under and after construction secures the quality and safety of structures. There is a possibility that spot measurements, which were frequently adopted in the past, fail to notice local deformation generated in non-measured points and such local deformation is sometimes generated in the ground and the concrete. Therefore, we paid attention to displacement measurement technology using fiber optic sensors capable of performing the distributed measurement. We considered measuring long civil engineering structures with a displacement accuracy of ±1 mm and conducted demonstration experiments to investigate this feasibility. In the experiment, we utilized 3DSensors (45 m and 170 m) that have the sufficient characteristic for application to civil engineering structures, such as high workability for the ground and structures and the actual achievements of field experiments, and the TW-COTDR system capable of performing measurements with high accuracy and at long distance. As a result, we demonstrated to measure the deflection of 2.5 mm with high accuracy.

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GHYABI, MEHRDAD, et DAVID LATTANZI. « A COMPARISON BETWEEN THREE VISION-BASED DISPLACEMENT MEASUREMENT METHODS IN LAB-SCALE STRUCTURAL EXPERIMENTS ». Dans Structural Health Monitoring 2021. Destech Publications, Inc., 2022. http://dx.doi.org/10.12783/shm2021/36258.

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Capturing structural displacement time-histories under service conditions or controlled load tests provides critical information for structural condition assessments. Measuring displacements directly is often impractical due to inherent technical and experimental difficulties, particularly for field inspection of in-service structures. Therefore, quantifying displacements indirectly from localized acceleration or strain measurements has been the dominant measurement approach for decades, despite numerical and logistical implementation challenges. More recently, the development of high-resolution imaging sensors, along with the emergence of high-performance digital image processing techniques, has led to the emergence of computer vision-based displacement tracking methods. These methods, generally referred to as “optical flow field measurements”, have been demonstrated to work effectively under a variety of laboratory and full-scale field conditions. The measurements are generally less accurate than those obtained from installed sensor arrays, but they have the advantage of providing dense displacement field measurements and do not require direct sensor installation. These approaches can be categorized into three major categories: dense flow, target or invariant feature tracking, and phase-based flow. This paper provides a comparative analysis of these three measurement paradigms for structural monitoring applications. A series of illustrative laboratory experiments are used to highlight key benefits and differences between different approaches.

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Hovorka, Susan. « Measurement, Monitoring, and Verification ». Dans CCS Symposium (organized by Baker Hughes). US DOE, 2019. http://dx.doi.org/10.2172/1765836.

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BALLISAT, ALEXANDER, PAUL WILCOX et ANTHONY CROXFORD. « Model Based Optimisation of Ultrasonic Corrosion Measurement ». Dans Structural Health Monitoring 2019. Lancaster, PA : DEStech Publications, Inc., 2019. http://dx.doi.org/10.12783/shm2019/32205.

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Brown, R. A. « Engine health monitoring ». Dans IEE Colloquium on Software in Measurement. IEE, 1996. http://dx.doi.org/10.1049/ic:19960868.

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Roy, Arjun, Deepak Bansal, David Brumley, Harish Kumar Chandrappa, Parag Sharma, Rishabh Tewari, Behnaz Arzani et Alex C. Snoeren. « Cloud Datacenter SDN Monitoring ». Dans IMC '18 : Internet Measurement Conference. New York, NY, USA : ACM, 2018. http://dx.doi.org/10.1145/3278532.3278572.

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van der Zee, P. « Measurement of tissue parameters ». Dans Medical Optical Tomography : Functional Imaging and Monitoring, sous la direction de Gerhard J. Mueller. SPIE, 1993. http://dx.doi.org/10.1117/12.2283754.

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NYIKAYARAMBA, GIFT, et BORIS MURMANN. « Towards On-Chip Measurement of S-Parameters for Ultrasonic Guided-Wave SHM : Damage Localization in Aluminum Using S-Parameter Measurements ». Dans Structural Health Monitoring 2019. Lancaster, PA : DEStech Publications, Inc., 2019. http://dx.doi.org/10.12783/shm2019/32246.

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JAHANBIN, MARK, SRIDHAR SANTHANAM, JEONG-BEOM IHN et ALISON MCMILLAN. « Application of Ultrasonic Guided Waves for Surface Roughness Measurement ». Dans Structural Health Monitoring 2019. Lancaster, PA : DEStech Publications, Inc., 2019. http://dx.doi.org/10.12783/shm2019/32304.

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Rapports d'organisations sur le sujet "Measurement monitoring"

Everett, Stephanie, Yingge Xiong, Jon Fricker et Kumares Sinha. Measurement and Monitoring of the Performance of Highway Investment. Purdue University, décembre 2013. http://dx.doi.org/10.5703/1288284315218.

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Fourie et Tullmin. L51912 Corrosion-CP Monitoring of Locations Remote from a Test Station. Chantilly, Virginia : Pipeline Research Council International, Inc. (PRCI), avril 2002. http://dx.doi.org/10.55274/r0010624.

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It is accepted that many situations exist on pipelines where a significant length of the pipeline (typically 2000 ft to 5 miles) is either totally inaccessible or access is so difficult or expensive that monitoring is not done at the required frequency. The need for finding a technique to allow the corrosion engineer to monitor CP levels of inaccessible locations from an accessible remote location has therefore been identified. A study to investigate all possible techniques available to achieve the above objective and to analyze typical scenarios requiring this approach has therefore been undertaken. Numerous techniques varying from pipe-to-soil type measurements, above ground current attenuation measurements, direct measurement of pipeline current, and measurement of the AC impedance response of the inaccessible section of pipeline were identified. In addition, some novel remote monitoring methods applicable to hostile inaccessible locations were identified. Analysis of these techniques in relation to the problem lead to the development of an algorithm to facilitate the choice of possible techniques under specific conditions.

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Hart, James, Nasir Zulfiqar et Carl Popelar. L52289 Use of Pipeline Geometry Monitoring to Assess Pipeline Condition. Chantilly, Virginia : Pipeline Research Council International, Inc. (PRCI), décembre 2008. http://dx.doi.org/10.55274/r0010254.

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Describes an algorithm is developed for deducing the longitudinal or axial strain from geometry pig measurements of a laterally displaced pipeline; often caused by geohazards. The development is limited to those lateral displacements of the pipeline that results in a predominantly transverse loading; i.e., the induced transverse component of the loading is much greater than its axial component. The emphasis is upon evaluating inelastic straining that accompanies large lateral displacement of the pipeline. The induced extensional strain is found to vary linearly with the change in curvature of the pipeline. The validity of the approach is established through favorable comparisons of the predictions for the extensional strains with those determined from buried pipeline finite element simulations of various displaced pipe configurations, pipe geometries, and loading amplitudes. Since the algorithm relies only upon measurements of the geometry of the displaced pipeline, it is independent of the pipe's and soil's material properties, pipe-soil interaction, and the loading conditions. Benefit: The efficacy of the algorithm is demonstrated by performing a large matrix of finite element simulations of displaced pipelines of different geometries subjected to block subsidence, landslides intersecting the pipeline at varying angles, fault crossings at different angles and different loading states, and comparing the analytical strains with the strains deduced from digital pig measurements of the curvature of the deformed pipeline. In this regard, the finite element simulations serve the role of surrogate geometry pig measurements. These comparisons are used to establish the resolution of the change in curvature measurement required of a geometry pig to produce a reliable estimate for the longitudinal strain in a displaced pipeline. An error analysis is also performed to establish the relative error as a function of the curvature measurement gage length, a characteristic feature-length, and the abruptness of the displaced shape of the pipeline.

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Everhart-Erickson, Michael Charles. Video-Based Dynamic Measurement & ; Analysis for Structural Health Monitoring. Office of Scientific and Technical Information (OSTI), avril 2018. http://dx.doi.org/10.2172/1435550.

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Charlton, William S. Noble Gas Measurement and Analysis Technique for Monitoring Reprocessing Facilities. Office of Scientific and Technical Information (OSTI), septembre 1999. http://dx.doi.org/10.2172/15210.

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Dhillon, Nathan, Andrew Hannay et Robin Workman. Next Generation Monitoring Systems. TRL, juillet 2022. http://dx.doi.org/10.58446/npwb2214.

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Survey vehicles, operating at traffic-speed, are deployed across the road network to assess the condition of road pavements. These apply high-quality (and high cost) equipment to measure condition. However, significant progress has been made in the development of low-cost sensors and data collection units that may have potential for application in highways. This project has aimed to understand the capabilities of this emerging technology. The project explores the technologies and combines a Raspberry-Pi based Data Acquisition System, compact camera, GPS, inertial measurement system, Wifi and 4G GSM comms and a low-cost Solid State LiDAR into a prototype device. The total cost is a few hundred pounds. Trials characterise the prototype system. Although the solid-state LiDAR sensors are not found to be robust in this application, the remaining sensors show strong potential for use in road condition assessment. A wider trial of the prototype system in a potential application – the measurement of roughness (IRI) on developing world road networks – was carried out in El Salvador. The prototype shows comparable performance with alternatives, combined with higher levels of practicality and capability, and the potential for higher levels of consistency through a common low-cost measurement platform. In the light of this research, it is felt that, following refinements to the prototype, the initial application for the device would be for condition surveys in developing world nations.

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Dasberg, Shmuel, Jan W. Hopmans, Larry J. Schwankl et Dani Or. Drip Irrigation Management by TDR Monitoring of Soil Water and Solute Distribution. United States Department of Agriculture, août 1993. http://dx.doi.org/10.32747/1993.7568095.bard.

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Drip irrigation has the potential of high water use efficiency, but actual water measurement is difficult because of the limited wetted volume. Two long-term experiments in orchards in Israel and in California and several field crop studies supported by this project have demonstrated the feasibility of precise monitoring of soil water distribution for drip irrigation in spite of the limited soil wetting. Time Domain Reflectometry (TDR) enables in situ measurement of soil water content of well defined small volumes. Several approaches were tried in monitoring the soil water balance in the field during drip irrigation. These also facilitated the estimation of water uptake: 1. The use of multilevel moisture probe TDR system. This approach proved to be of limited value because of the extremely small diameter of measurement. 2. The placement of 20 cm long TDR probes at predetermined distances from the drippers in citrus orchards. 3. Heavy instrumentation with neutron scattering access tubes and tensiometers of a single drip irrigated almond tree. 4. High resolution spatial and temporal measurements (0.1m x 0.1m grid) of water content by TDR in corn irrigated by surface and subsurface drip. The latter approach was accompanied by parametric modelling of water uptake intensity patterns by corn roots and superimposed with analytical solutions for water flow from point and line sources. All this lead to general and physically based suggestions for the placement of soil water sensors for scheduling drip irrigation.

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Johnson, Aaron N., Rodney A. Bryant, Tamae Maeda Wong, James R. Whetstone, Toralf Dietz, Donald Giel, David Elam Jr. et al. Measurement Challenges and Metrology for Monitoring CO2 Emissions from Smokestacks – Workshop Summary. National Institute of Standards and Technology, janvier 2016. http://dx.doi.org/10.6028/nist.sp.1201.

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Stephen Seong Lee. Innovative Coal Solids-Flow Monitoring and Measurement Using Phase-Doppler and Mie Scattering Techniques. Office of Scientific and Technical Information (OSTI), janvier 2010. http://dx.doi.org/10.2172/984318.

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Daw, Joshua, Lance Hone, Andrew Casella, Matthew Prowant, Chris Hutchinson, Morris Good, Robert Montgomery et Pradeep Ramuhalli. Second Annual Progress Report on Ultrasonic Sensors for TREAT Fuel Condition Measurement and Monitoring. Office of Scientific and Technical Information (OSTI), novembre 2019. http://dx.doi.org/10.2172/1668673.

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