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Littérature scientifique sur le sujet « Monitoring overhead »

Auteur : Grafiati

Publié le 9 mars 2023

Mis à jour le 10 mars 2023

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Articles de revues sur le sujet "Monitoring overhead"

Sugama, Yoji, Toshihide Kishi et Nobuyuki Ishioka. « 1B31 Development of an Overhead Contact Line Equipment Monitoring System(Condition Monitoring-Vehicle) ». Proceedings of International Symposium on Seed-up and Service Technology for Railway and Maglev Systems : STECH 2015 (2015) : _1B31–1_—_1B31–9_. http://dx.doi.org/10.1299/jsmestech.2015._1b31-1_.

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Huang, Xiaowan, Justin Seyster, Sean Callanan, Ketan Dixit, Radu Grosu, Scott A. Smolka, Scott D. Stoller et Erez Zadok. « Software monitoring with controllable overhead ». International Journal on Software Tools for Technology Transfer 14, n^o 3 (29 décembre 2010) : 327–47. http://dx.doi.org/10.1007/s10009-010-0184-4.

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Dobrynin, E. V., T. V. Boshkareva et O. V. Tabakov. « An Overhead Line Voltage Monitoring System ». Russian Electrical Engineering 91, n^o 3 (mars 2020) : 191–94. http://dx.doi.org/10.3103/s1068371220030074.

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Kumar, Naveen, Bruce R. Childers et Mary Lou Soffa. « Low overhead program monitoring and profiling ». ACM SIGSOFT Software Engineering Notes 31, n^o 1 (janvier 2006) : 28–34. http://dx.doi.org/10.1145/1108768.1108801.

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Liu, Dongbo, et Zhichao Liu. « An Adaptive Cloud Monitoring Framework Based on Sampling Frequency Adjusting ». International Journal of e-Collaboration 16, n^o 2 (avril 2020) : 12–26. http://dx.doi.org/10.4018/ijec.2020040102.

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In a cloud platform, the monitoring service has become a necessary infrastructure to manage resources and deliver desirable quality-of-service (QoS). Although many monitoring solutions have been proposed in recent years, how to mitigate the overhead of monitoring service is still an opening issue. This article presents an adaptive monitoring framework, in which a traffic prediction model is introduced to estimate short-term traffic overhead. Based on this prediction model, a novel algorithm is proposed to dynamically change the sampling frequency of sensors so as to achieve better tradeoffs between monitoring accuracy and overhead. Also, a monitoring topology optimization mechanism is incorporated which enables to make more cost-effective decisions on monitoring management. The proposed framework is tested in a realistic cloud and the results indicate that it can significantly reduce the communication overhead when performing monitoring tasks for multiple tenants.

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Popiolek, Pedro Freire, Karina dos Santos Machado et Odorico Machado Mendizabal. « Low overhead performance monitoring for shared infrastructures ». Expert Systems with Applications 171 (juin 2021) : 114558. http://dx.doi.org/10.1016/j.eswa.2020.114558.

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Hussain, T. M., T. N. Saadawi et S. A. Ahmed. « Overhead infrared sensor for monitoring vehicular traffic ». IEEE Transactions on Vehicular Technology 42, n^o 4 (1993) : 477–83. http://dx.doi.org/10.1109/25.260764.

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Feng, Chao, Rui Yang, Xianhui Cao, Weike Liu, Shuyuni He, Kejian Ouyang, Zhiwei Jia, Yi Xie et Jun Wang. « Online monitoring and early warning technology for the status of earth wire for overhead line ». Journal of Physics : Conference Series 2196, n^o 1 (1 février 2022) : 012020. http://dx.doi.org/10.1088/1742-6596/2196/1/012020.

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Abstract Overhead lines for wind power transmission in the southern region have the characteristics of large tower-line elevation, across thick ice areas, harsh natural environments, and difficult maintenance. Unpredictable line breakage accidents often occur, affecting the stability of the social power supply. This paper designs and introduces a technology based on intelligent perception technique for online monitoring of the earth wire, which can realize long-term real-time online monitoring of the state of the earth wire of overhead lines and solve the problem of line monitoring from wind power transmission and fault inspection and troubleshooting. Now the test and monitoring work of an overhead transmission line has been completed during the ice period, and the test results show that the technology has good monitoring performance.

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Listyuhin, V. A., E. A. Pecherskaya, O. A. Timokhina et V. V. Smogunov. « System for monitoring the parameters of overhead power lines ». Journal of Physics : Conference Series 2086, n^o 1 (1 décembre 2021) : 012059. http://dx.doi.org/10.1088/1742-6596/2086/1/012059.

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Abstract The analysis of disturbances (accidents) on overhead power transmission lines and methods and means of the overhead power transmission lines parameters monitoring was carried out. It is shown that the most promising direction for ensuring the required indicators of the reliability of power supply is the development and implementation of information and measurement systems at the facilities of the power supply network complex. The structure of an intelligent information-measuring system for measuring parameters characterizing the state of wires, external factors influencing the state of power lines is proposed. The proposed decision support system will make it possible to promptly identify defective sections of overhead lines, increase the level of technological management of electrical networks.

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Mohapatra, Seli, Prafulla Kumar Behera, Prabodh Kumar Sahoo, Manoj Kumar Ojha, Chetan Swarup, Kamred Udham Singh, Saroj Kumar Pandey, Ankit Kumar et Anjali Goswami. « Modified Ring Routing Protocol for Mobile Sinks in a Dynamic Sensor Network in Smart Monitoring Applications ». Electronics 12, n^o 2 (5 janvier 2023) : 281. http://dx.doi.org/10.3390/electronics12020281.

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The stationary hierarchical network faces considerable challenges from hotspots and faster network breakdowns, especially in smart monitoring applications. As a solution to this issue, mobile sinks were recommended since they are associated with huge and balanced ways to transfer data and energy across the network. Again, due to the mobile sink node advertisement around the network latency and the energy utilization overheads introduced across the network, ring routing reduces the control overhead while preserving the benefits of the mobile sink, thereby optimizing the energy and improving the network life span. Consequently, we suggested a novel, distributed advanced ring routing strategy, in this work, for the mobile wireless sensor network. Extensive simulations and performance evaluation, in comparison to previous distributed mobile approaches, reveal a 37% and 40% boost in the network throughput and end-to end delay, respectively. Additionally, the lifespan of a network is determined by the control overhead and energy demand.

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Thèses sur le sujet "Monitoring overhead"

Ritzmann, Deborah. « Synchrophasor-based overhead line impedance monitoring ». Thesis, University of Reading, 2017. http://centaur.reading.ac.uk/74320/.

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Thermal limits of overhead transmission lines create network constraints that can result in curtailment of renewable energy generation. Thermal limits are conventionally static and based on worst-case, non-cooling ambient weather conditions, leading to under-utilization of overhead lines. Utilization can be increased and network constraints reduced by rating overhead lines dynamically, based on actual conductor temperature. Installation and maintenance of temperature and weather sensors along an overhead line is expensive and laborious. A more cost-effective solution is to derive average conductor temperature from overhead line impedance parameters, which can be calculated from measurements of electrical signals at each line end. Synchronized phasor measurement technology is becoming increasingly available in substations to capture voltage and current signals with high accuracy and reporting rates. It is known that the substation instrumentation channel can introduce significant systematic errors to the phasor measurements, which in turn cause inaccurate line impedance parameter and temperature values. This thesis presents novel methods for accurate, real-time monitoring of overhead line impedance parameters using synchronized phasor measurements that have systematic errors. In contrast to previous research, the time-variance and temperature dependence of line resistance as well as compensation of systematic errors is taken into account in the system model to increase parameter estimation accuracy. In addition, an algorithm for the selection of the best parameter estimates from different measurement sets is given. The effectiveness of the novel methods is demonstrated in several case studies on measurement data from simulations and an actual overhead line. The results show that the identified correction factors compensate systematic measurement errors, leading to a reduction in impedance parameter estimation errors of at least one order of magnitude compared to existing methods. Furthermore, the accuracy of real-time estimation of average conductor temperature was increased by at least one order of magnitude relative to previously proposed methods.

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Batty, Eric Richard. « A novel transmission line monitoring method ». Thesis, University of Nottingham, 2000. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.326654.

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Hussin, Mohd Fahmi. « Voltage transducer for fault monitoring on high voltage overhead lines ». Thesis, Cardiff University, 2014. http://orca.cf.ac.uk/65731/.

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Overhead lines are the backbone of electrical power transmission. In most cases, the overhead line provides the best economic and practical solution for energy transmission. Nevertheless, overhead lines suffer more faults due to the vulnerability of the overhead lines to adverse weather condition, transient overvoltage and falling trees. An extensive literature review of existing condition monitoring and impulse a voltage measurement technique of overhead lines are covered in this work, and ultimately leads to the development of the proposed voltage transducer. Although conventional transducers such as voltage transformers and voltage dividers are widely used for monitoring and voltage measurement, yet they have several drawbacks in terms of their size and cost. These are the key factors that limit their widespread deployment for monitoring and measuring voltage on overhead lines and, in particular, rural areas. The proposed transducer is based on a non-contact capacitive voltage probe developed at Cardiff University. However, the proposed transducer uses a high voltage conductor rather than the ground as a measurement reference. The proposed transducer is based on a cylindrical-shaped in order to avoid sharp edges, which can initiate a partial discharge effect. Commercial numerical field computation software packages are used to assist in the development of the proposed transducer for simulation of the electric field distributions around the HV conductor and the transducer. The computed electric field magnitudes obtained on the sensing probe surface are then used for calibration of the proposed transducer. The proposed transducer is developed using low cost materials and tested in a laboratory environment with a low amplitude impulse supply using a surge generator and the corresponding output voltage amplitude obtained from the transducer was validated against a low ac voltage supply using variable output voltage source. The effects of variation in the input voltage, the integrating capacitor inserted between the HV conductor and the sensing probe and height of the transducer above ground on the output voltage amplitude are also investigated. The developed transducer is subsequently tested in field experiments using test overhead lines with low and high voltage supplies. Only a single-phase measurement setup was used in this test as there is only one voltage transducer fabricated in this work. Therefore, each phase of the overhead line was tested individually. Results obtained from the laboratory and field experiments have demonstrated the suitability of the developed transducer for measuring both ac and impulse voltages, which would be useful for fault monitoring on the high voltage overhead lines. However, the computed results obtained from the simulation demonstrated the presence of end-effects at the transducer sensing probe edges. Therefore, an improved design was proposed in this work by introducing a floating electrode between the sensing probe and the guard electrode, with the aim to reduce the fringing effects by preventing the sensing probe from sensing unwanted electric field. The physical development of this improved transducer design is yet to be initiated, and is thus proposed for future work.

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Ochoa, Gallardo Ricardo. « Reducing post-silicon coverage monitoring overhead with emulation and statistical analysis ». Thesis, University of British Columbia, 2015. http://hdl.handle.net/2429/54393.

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With increasing design complexity, post-silicon validation has become a critical problem. In pre-silicon validation, coverage is the primary metric of validation effectiveness, but in post-silicon, the lack of observability makes coverage measurement problematic. On-chip coverage monitors are a possible solution, where a coverage monitor is a hardware circuit that sets to one when the coverage event of interest occurs. However, prior research has shown that the overhead is prohibitive for anything beyond a small number of coverage monitors. In this thesis, I explore techniques that reduce the number of instrumented coverage monitors, while still being able to imply full coverage with high probability. These techniques use a deterministic forward feature selection algorithm with the objective functions based on statistical information. For gathering the required statistical information, the method relies on emulation, where all coverage monitors of interest are instrumented on a version of the design. On this emulator, such as an FPGA, I stress the design with randomly generated tests to collect the data from the instrumented coverage monitors. I propose three objective functions for the feature selection algorithm: the first estimates the probability of a coverage monitor being set during a test; the next objective function builds a Bayesian Network (BN), then takes advantage of the relationship information between nodes (coverage monitors), which the network provides; the last objective function directly estimates the conditional probability of coverage from the gathered data. I demonstrate these techniques on a non-trivial system-on-chip, by measuring the code coverage achieved after executing randomly generated test programs. Depending on the objective function, results show a 67.7% to 95.5% reduction in the number of required coverage monitors. In the ASIC implementation, this would translate into an impact of 0.33-1.96% in silicon area overhead and 0.40-2.70% in static power overhead. These results show my technique works, by proving it is possible to track a smaller number of coverage events that statistically represent the whole set.
Applied Science, Faculty of
Electrical and Computer Engineering, Department of
Graduate

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Habtemariam, Filmon A. « HIGH-FREQUENCY IMPEDANCE CHARACTERISTICS AND HEALTH CONDITION MONITORING OF OVERHEAD POWER LINES ». University of Akron / OhioLINK, 2016. http://rave.ohiolink.edu/etdc/view?acc_num=akron1472735633.

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Lindberg, Elisabeth. « The overhead line sag dependence on weather parameters and line current ». Thesis, Uppsala universitet, Institutionen för geovetenskaper, 2011. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-168528.

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As the demand for energy increases, as well as the demand for renewable energy, Vattenfall, as network owner, receives many requests to connect new wind power to the grid. The limiting factor for how much wind power that can be connected to the grid is in this case the maximum current capacity of the overhead lines that is based on a line temperature limit. The temperature limit is set to ensure a safety distance between the lines and the ground. This master thesis project is a part of a research project at Vattenfall Research and Development that is examining the possibilities of increasing the allowed current on overhead lines in order to be able to connect more wind power to the existing network. Measured data from two overhead lines in southern Sweden is analyzed and the internal relations between the measured parameters are examined. The measured parameters are overhead line sag, line temperature, ambient temperature, solar radiation, wind speed and line current. The results indicate that there is a big load margin that could be utilized to increase the maximum current as long as further work could show that low winds at line height correlates with low wind at nacelle height. The results show that the sag versus line temperature is approximately linear within the measured temperature range. This means that a real-time-monitoring system measuring the line temperature should give adequate knowledge of the line position to ensure the safety distance. A model for the line temperature as a function of insolation, current, ambient temperature and wind speed has been estimated for one of the lines. Simulations show that a sudden increase in current at a worst-case scenario would give the operators about ten minutes to react before the line reaches the temperature limit.

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Robson, Stephen. « An integrated monitoring and communication device for use on 11 kV overhead lines ». Thesis, Cardiff University, 2012. http://orca.cf.ac.uk/42930/.

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In this thesis, an integrated monitoring device for use on 11 kV overhead lines has been developed. Uniquely, the devices use an optimised form of Power Line Communication to enable a low latency communication network. It is shown that such a network is able to facilitate new and improved applications and offer tangible benefits to the network operator.

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CORNEJO, OLIVARES OSCAR EDUARDO. « In-The-Field Monitoring of Interactive Applications ». Doctoral thesis, Università degli Studi di Milano-Bicocca, 2019. http://hdl.handle.net/10281/241251.

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Le tecniche di monitoraggio possono estrarre dati accurati sul comportamento dei sistemi software. Se utilizzati nel campo, possono rivelare come le applicazioni si comportano in contesti del mondo reale e come i programmi sono effettivamente esercitati dai loro utenti. Tuttavia, la raccolta, l'elaborazione e la distribuzione dei dati sul campo devono essere eseguiti senza interruzioni e in modo non invasivo mentre gli utenti interagiscono con le loro applicazioni. Per limitare l'intrusività del monitoraggio sul campo, un approccio comune consiste nel ridurre la quantità di dati raccolti (ad esempio, in pochi eventi e in crash dump), che tuttavia possono influire gravemente sull'efficacia delle tecniche che sfruttano i dati sul campo. Questa tesi di dottorato indaga il trade-off tra il monitoraggio sul campo e il degrado dell'esperienza utente nelle applicazioni interattive, cioè le applicazioni che richiedono input dell'utente per continuare le sue operazioni. In particolare, abbiamo identificato due grandi sfide: capire come l'utente percepisce il sovraccarico del monitoraggio e studiare come raccogliere dati in modo non intrusivo senza perdere troppe informazioni. In breve, forniamo tre contributi principali. In primo luogo, presentiamo uno studio empirico volto a quantificare se e in che misura il sovraccarico di monitoraggio introdotto in un'applicazione interattiva è percepito dagli utenti. I risultati riportati possono essere sfruttati per progettare attentamente le procedure di analisi in esecuzione sul campo. In particolare, abbiamo scoperto che gli utenti non percepivano differenze significative per un overhead dell'80% e raramente percepivano un overhead del 140%. In secondo luogo, introduciamo un framework di monitoraggio per ricavare dati a runtime completi senza influire sulla qualità dell'esperienza utente. La tecnica produce un automa a stati finiti che mostra i possibili usi dell'applicazione dagli eventi osservati sul campo. Dal modello, è anche possibile estrarre tracce accurate e complete che potrebbero essere utilizzate per supportare varie attività, come il debugging, la riproduzione e la profilazione di errori di campo. Infine, presentiamo una strategia per ridurre ulteriormente l'impatto del monitoraggio limitando l'attività svolta in parallelo con le operazioni degli utenti: la strategia ritarda il salvataggio di eventi da archiviare in fasi di inattività dell'applicazione per ridurre l'impatto sull'esperienza utente. L'approccio riduce considerevolmente l'impatto del monitoraggio sulle operazioni degli utenti producendo tracce estremamente accurate. I risultati ottenuti in questo dottorato la tesi può abilitare una serie di soluzioni di test e analisi che sfruttano in modo estensivo i dati sul campo.
Monitoring techniques can extract accurate data about the behavior of software systems. When used in the field, they can reveal how applications behave in real-world contexts and how programs are actually exercised by their users. However, the collection, processing, and distribution of field data must be done seamlessly and unobtrusively while users interact with their applications. To limit the intrusiveness of field monitoring a common approach is to reduce the amount of collected data (e.g., to rare events and to crash dumps), which, however, may severely affect the effectiveness of the techniques that exploit field data. This Ph.D. thesis investigates the trade-off between field monitoring and the degradation of the user experience in interactive applications, that is, applications that require user inputs to continue its operations. In particular, we identified two big challenges: to understand how the user perceives monitoring overhead and, to study how to collect data in a non-intrusive way without losing too much information. In brief, we provide three main contributions. In the first place, we present an empirical study aimed at quantifying if and to what extent the monitoring overhead introduced in an interactive application is perceived by users. The reported results can be exploited to carefully design analysis procedures running in the field. In particular, we realized that users do not perceive significant differences for an overhead of 80\% and seldom perceived an overhead of 140\%. Secondly, we introduce a monitoring framework for deriving comprehensive runtime data without affecting the quality of the user experience. The technique produces a finite state automaton that shows possible usages of the application from the events observed in the field. From the model, it is also possible to extract accurate and comprehensive traces that could be used to support various tasks, such as debugging, field failures reproduction and profiling. Finally, we present a strategy to further reduce the impact of monitoring by limiting the activity performed in parallel with users' operations: the strategy delays the saving of events to file to idle phases of the application to reduce the impact on the user experience. The approach considerably decreases the impact of monitoring on user operations producing highly accurate traces. The results obtained in this Ph.D. thesis can enable a range of testing and analysis solutions that extensively exploit field data.

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Najafi, Syed Ahmed Ali. « Energy Harvesting From Overhead Transmission Line Magnetic Fields ». University of Akron / OhioLINK, 2019. http://rave.ohiolink.edu/etdc/view?acc_num=akron1548448189459464.

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Komaragiri, Shalini Sushmitha. « A SAG monitoring device based on a cluster of code-based GPS receivers : a thesis presented to the faculty of the Graduate School, Tennessee Technological University / ». Click to access online, 2009. http://proquest.umi.com/pqdweb?index=0&did=2000377771&SrchMode=1&sid=2&Fmt=6&VInst=PROD&VType=PQD&RQT=309&VName=PQD&TS=1277472835&clientId=28564.

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Livres sur le sujet "Monitoring overhead"

Diagnostics of Electrical Equipment Faults and Power Overhead Transmission Line Condition by Monitoring Systems : Short-Circuit Testing of Power Transformers. Nova Science Publishers, Incorporated, 2016.

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Gugerty, Mary Kay, et Dean Karlan. The Retail Donor Perspective. Oxford University Press, 2018. http://dx.doi.org/10.1093/oso/9780199366088.003.0015.

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This chapter teases apart the information shortfalls in the philanthropy market for individual donors. Donors that want to use the CART principles to evaluate nonprofit organizations have little information to go on to do so. Few organizations put forward genuine measures of impact. And the rating information that is out there is often misleading. Retail donors are left to sway back and forth in the wake of informal impressions, nonprofit-driven public relations, isolated tales of success, and fortuitous personal connections. The chapter argues that existing nonprofit rating systems do not address the core problem since they typically focus on transparency, overhead, or other factors that may or may not be correlated to actual program impact. ImpactMatters, co-founded by Goldilocks co-author Dean Karlan, uses the CART principles to develop “impact audits” that evaluate nonprofits’ quality of impact evidence, cost to create impact, quality of monitoring systems, and extent of learning and iteration.

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Energy management : Inadequate DOE monitoring of contractors' acquisitions from affiliates : report to the Chairman, Committee on Governmental Affairs, U.S. Senate. Washington, D.C : The Office, 1994.

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Chapitres de livres sur le sujet "Monitoring overhead"

Wonisch, Daniel, Alexander Schremmer et Heike Wehrheim. « Zero Overhead Runtime Monitoring ». Dans Software Engineering and Formal Methods, 244–58. Berlin, Heidelberg : Springer Berlin Heidelberg, 2013. http://dx.doi.org/10.1007/978-3-642-40561-7_17.

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Chrząszcz, Jerzy. « Zero-Overhead Monitoring of Remote Terminal Devices ». Dans Studies in Big Data, 103–13. Cham : Springer International Publishing, 2018. http://dx.doi.org/10.1007/978-3-319-77604-0_8.

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Nataraj, Aroon, Matthew Sottile, Alan Morris, Allen D. Malony et Sameer Shende. « TAUoverSupermon : Low-Overhead Online Parallel Performance Monitoring ». Dans Euro-Par 2007 Parallel Processing, 85–96. Berlin, Heidelberg : Springer Berlin Heidelberg, 2007. http://dx.doi.org/10.1007/978-3-540-74466-5_11.

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Voevodin, Vadim, Konstantin Stefanov et Sergey Zhumatiy. « Overhead Analysis for Performance Monitoring Counters Multiplexing ». Dans Lecture Notes in Computer Science, 461–74. Cham : Springer International Publishing, 2022. http://dx.doi.org/10.1007/978-3-031-22941-1_34.

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Alivelu Manga, N., Surya Teja Manupati, N. S. C. Viswanadh, P. Sriram et D. V. S. G. Varun. « Design of Progressive Monitoring Overhead Water Tank ». Dans Lecture Notes in Electrical Engineering, 267–79. Singapore : Springer Nature Singapore, 2023. http://dx.doi.org/10.1007/978-981-19-5936-3_25.

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Farzaneh, Masoud, et William A. Chisholm. « Systems for Monitoring and Predicting Ice Accretion and Shedding ». Dans Techniques for Protecting Overhead Lines in Winter Conditions, 73–112. Cham : Springer International Publishing, 2022. http://dx.doi.org/10.1007/978-3-030-87455-1_3.

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Rezinkina, Marina M., Yevgen I. Sokol, Artur O. Zaporozhets, Oleg G. Gryb, Ihor T. Karpaliuk et Sergiy V. Shvets. « Monitoring of Energy Objects Parameters with Using UAVs ». Dans Control of Overhead Power Lines with Unmanned Aerial Vehicles (UAVs), 1–8. Cham : Springer International Publishing, 2021. http://dx.doi.org/10.1007/978-3-030-69752-5_1.

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Halász, Balint G., Bálint Németh, Levente Rácz, Dávid Szabó et Gábor Göcsei. « Monitoring of Actual Thermal Condition of High Voltage Overhead Lines ». Dans IFIP Advances in Information and Communication Technology, 265–73. Cham : Springer International Publishing, 2018. http://dx.doi.org/10.1007/978-3-319-78574-5_25.

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Wu, Chun Wah Wallace, Deepak Kumar, Borzoo Bonakdarpour et Sebastian Fischmeister. « Reducing Monitoring Overhead by Integrating Event- and Time-Triggered Techniques ». Dans Runtime Verification, 304–21. Berlin, Heidelberg : Springer Berlin Heidelberg, 2013. http://dx.doi.org/10.1007/978-3-642-40787-1_18.

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Meng, Xin, Jinghan He, Xiaojun Wang et Guomin Luo. « A Novel Real-Time Tension Monitoring Method for Overhead Contact System ». Dans Lecture Notes in Electrical Engineering, 171–78. Berlin, Heidelberg : Springer Berlin Heidelberg, 2014. http://dx.doi.org/10.1007/978-3-642-53751-6_17.

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Actes de conférences sur le sujet "Monitoring overhead"

Keen, P. M. « Monitoring overhead line equipment ». Dans IEE Seminar Current Collections for High Speed Trains. IEE, 1998. http://dx.doi.org/10.1049/ic:19981002.

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Callanan, Sean, Daniel J. Dean, Michael Gorbovitski, Radu Grosu, Justin Seyster, Scott A. Smolka, Scott D. Stoller et Erez Zadok. « Software monitoring with bounded overhead ». Dans Distributed Processing Symposium (IPDPS). IEEE, 2008. http://dx.doi.org/10.1109/ipdps.2008.4536433.

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Okanovic, Dusan, Milan Vidakovic et Zora Konjovic. « Towards performance monitoring overhead reduction ». Dans 2013 IEEE 11th International Symposium on Intelligent Systems and Informatics (SISY 2013). IEEE, 2013. http://dx.doi.org/10.1109/sisy.2013.6662557.

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Kumar, Naveen, Bruce R. Childers et Mary Lou Soffa. « Low overhead program monitoring and profiling ». Dans The 6th ACM SIGPLAN-SIGSOFT workshop. New York, New York, USA : ACM Press, 2005. http://dx.doi.org/10.1145/1108792.1108801.

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Phillpotts, R. « Monitoring discontinuities in the 25 kV overhead ». Dans IEE Seminar Condition Monitoring for Rail Transport Systems. IEE, 1998. http://dx.doi.org/10.1049/ic:19980982.

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Shilin, A. A., N. S. Kuznetsova et D. N. Avdeyuk. « Intelligent Reflectometer for Monitoring Overhead Power Lines ». Dans 2018 International Conference on Industrial Engineering, Applications and Manufacturing (ICIEAM). IEEE, 2018. http://dx.doi.org/10.1109/icieam.2018.8728576.

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Zhao, Xinming, Thomas Keutel, Marc Baldauf et Olfa Kanoun. « Energy harvesting for overhead power line monitoring ». Dans 2012 IEEE 9th International Multi-Conference on Systems, Signals and Devices (SSD). IEEE, 2012. http://dx.doi.org/10.1109/ssd.2012.6198106.

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Harada, S., et S. Kusumi. « Monitoring of overhead contact line based on contact force ». Dans IET International Conference on Railway Condition Monitoring. IEE, 2006. http://dx.doi.org/10.1049/ic:20060067.

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Lees, M. I. « Lightning strike location for overhead lines ». Dans IEE Half Day Colloquium on Operational Monitoring of Distribution and Transmission Systems. IEE, 1997. http://dx.doi.org/10.1049/ic:19970292.

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Frolec, Jakub, et Miroslav Husak. « Wireless sensor system for overhead line ampacity monitoring ». Dans Microsystems (ASDAM). IEEE, 2010. http://dx.doi.org/10.1109/asdam.2010.5667024.

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Rapports d'organisations sur le sujet "Monitoring overhead"

Harkema, Marcel, Dick Quartel, Rob van der Mei et Bart Gijsen. JPMT : A Java Performance Monitoring Tool. Centre for Telematics and Information Technology (CTIT), 2003. http://dx.doi.org/10.3990/1.5152400.

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This paper describes our Java Performance Monitoring Toolkit (JPMT), which is developed for detailed analysis of the behavior and performance of Java applications. JPMT represents internal execution behavior of Java applications by event traces, where each event represents the occurrence of some activity, such as thread creation, method invocation, and locking contention. JPMT supports event filtering during and after application execution. Each event is annotated by high-resolution performance attributes, e.g., duration of locking contention and CPU time usage by method invocations. JPMT is an open toolkit, its event trace API can be used to develop custom performance analysis applications. JPMT comes with an event trace visualizer and a command-line event trace query tool for scripting purposes. The instrumentation required for monitoring the application is added transparently to the user during run-time. Overhead is minimized by only instrumenting for events the user is interested in and by careful implementation of the instrumentation itself.

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APPLICATION OF HYDRAULIC SYNCHRONOUS LIFTING TECHNOLOGY IN THE CONSTRUCTION OF LONG-SPAN HYBRID STEEL STRUCTURES. The Hong Kong Institute of Steel Construction, août 2022. http://dx.doi.org/10.18057/icass2020.p.070.

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The aim of this study was to solve technical problems, such as uneven structures, multiple lifting points, high accuracy control requirements, and multi-disciplinary collaborative work, in the process of lifting and hoisting long-span hybrid steel structures based on the lifting work of a steel roof and steel beams of the Hunan Radio and Television studio F. First, after conducting research on the comparison and selection of the construction scheme, lifting process, quality control and other aspects, a floor assembly + hydraulic lifting + overhead supplementary bar construction plan was proposed. The large-section steel beam and truss hybrid structure system with different bottom chord elevations was divided into two units for synchronous lifting, with weights of 715 tons and 340 tons, lifting heights of 21.5 metres and 15 metres, and a maximum span of 50.4 metres , Second, the maximum vertical displacement, maximum stress ratio of the members, lifting reaction force frame and overall stability of the hybrid structure during the lifting process were analysed, and the results showed that they all met the requirements. Finally, the monitoring data of the field construction process were in good agreement with the numerical calculation results, further verifying the rationality and feasibility of hydraulic synchronous lifting technology, which can provide guidance and a reference for the construction of similar long-span hybrid steel structures.

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