Academic literature on the topic 'Indirect Measurement Systems'

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Journal articles on the topic "Indirect Measurement Systems"

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Oskolkov, Alexander, Igor Bezukladnikov, and Dmitriy Trushnikov. "Indirect Temperature Measurement in High Frequency Heating Systems." Sensors 21, no. 7 (2021): 2561. http://dx.doi.org/10.3390/s21072561.

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One of the biggest challenges of fused deposition modeling (FDM)/fused filament fabrication (FFF) 3D-printing is maintaining consistent quality of layer-to-layer adhesion, and on the larger scale, homogeneity of material inside the whole printed object. An approach for mitigating and/or resolving those problems, based on the rapid and reliable control of the extruded material temperature during the printing process, was proposed. High frequency induction heating of the nozzle with a minimum mass (<1 g) was used. To ensure the required dynamic characteristics of heating and cooling processes
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Kyuregyan, S. G. "Analytic construction of the elements of indirect measurement systems." Measurement Techniques 38, no. 8 (1995): 865–69. http://dx.doi.org/10.1007/bf00978384.

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Alberdi-Muniain, A., N. Gil-Negrete, and L. Kari. "Indirect energy flow measurement in magneto-sensitive vibration isolator systems." Applied Acoustics 74, no. 4 (2013): 575–84. http://dx.doi.org/10.1016/j.apacoust.2012.09.011.

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Dindorf, Ryszard, and Piotr Wos. "Test of measurement device for the estimation of leakage flow rate in pneumatic pipeline systems." Measurement and Control 51, no. 9-10 (2018): 514–27. http://dx.doi.org/10.1177/0020294018808681.

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Background: Indirect measurements of flow rate serve to determine air consumption, leakage values and characteristics of compressed air systems (CASs). Method: A new method of indirect flow rate measurement in a pneumatic pipeline system was developed. The method enables to measure the controlled leakage in a branch line and was used to construct automatic measuring systems auditing the compressed air systems piping. Results: First, the leak-testing instrument LT-I 200 was designed, constructed, and tested as portable measurement device for the estimation of air leakage flow rate in pneumatic
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Levine, James A. "Measurement of energy expenditure." Public Health Nutrition 8, no. 7a (2005): 1123–32. http://dx.doi.org/10.1079/phn2005800.

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AbstractMeasurement of energy expenditure in humans is required to assess metabolic needs, fuel utilisation, and the relative thermic effect of different food, drink, drug and emotional components. Indirect and direct calorimetric and non-calorimetric methods for measuring energy expenditure are reviewed, and their relative value for measurement in the laboratory and field settings is assessed. Where high accuracy is required and sufficient resources are available, an open-circuit indirect calorimeter can be used. Open-circuit indirect calorimeters can employ a mask, hood, canopy or room/chamb
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Puzovic, Slavisa, Branko Koprivica, Alenka Milovanovic, and Milic Djekic. "Analysis of measurement error in direct and transformer-operated measurement systems for electric energy and maximum power measurement." Facta universitatis - series: Electronics and Energetics 27, no. 3 (2014): 389–98. http://dx.doi.org/10.2298/fuee1403389p.

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Analysis of error in measuring electric energy and maximum power within direct and half-indirect measurement system at the voltage of 0.4kV is presented in the paper. The analysis involved all the elements of the measurement system, i.e. calibration and testing of the transformer-operated and direct digital energy meters and measuring current transformers. This equipment was also used for measurements in the transformer substation aiming at error analysis at measurements made under the real conditions. The results obtained show significant negative measurement error introduced by the energy me
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Pennock, B. E., and M. Donahoe. "Indirect calorimetry with a hood: flow requirements, accuracy, and minute ventilation measurement." Journal of Applied Physiology 74, no. 1 (1993): 485–91. http://dx.doi.org/10.1152/jappl.1993.74.1.485.

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Flow-dilution-based hood systems for indirect calorimetry eliminate the conventional mouthpiece or mask of sealed-circuit systems allow measurements with improved patient comfort. This feature is particularly relevant when measurements are made over long periods of time or are repeated often. The flow of air pulled through the hood into the calorimeter in these systems is necessary to clear CO2 from inside the hood. The errors in these systems are greater than those in the sealed-circuit systems and are proportional to the flow. We show that the CO2 concentration within the hood at steady stat
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Seale, James L., and William V. Rumpler. "Synchronous direct gradient layer and indirect room calorimetry." Journal of Applied Physiology 83, no. 5 (1997): 1775. http://dx.doi.org/10.1152/jappl.1997.83.5.1775.

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Rumpler, James L., and William V. Seale. Synchronous direct gradient layer and indirect room calorimetry. J. Appl. Physiol. 83(5): 1775–1781, 1997.—A dual direct/indirect room-sized calorimeter is used at the Beltsville Human Nutrition Research Center to measure heat emission and energy expenditure in humans. Because the response times of a gradient layer direct calorimeter and an indirect calorimeter are not equivalent, the respective rate of heat emission and energy expenditure cannot be directly compared. A system of equations has been developed and tested that can correct the respective ou
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Veselov, O. V. "Indirect measurement of state variables for the diagnostics of electromechanical systems." Measurement Techniques 50, no. 7 (2007): 758–62. http://dx.doi.org/10.1007/s11018-007-0145-9.

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VOSS, HENNING U., JENS TIMMER, and JÜRGEN KURTHS. "NONLINEAR DYNAMICAL SYSTEM IDENTIFICATION FROM UNCERTAIN AND INDIRECT MEASUREMENTS." International Journal of Bifurcation and Chaos 14, no. 06 (2004): 1905–33. http://dx.doi.org/10.1142/s0218127404010345.

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We review the problem of estimating parameters and unobserved trajectory components from noisy time series measurements of continuous nonlinear dynamical systems. It is first shown that in parameter estimation techniques that do not take the measurement errors explicitly into account, like regression approaches, noisy measurements can produce inaccurate parameter estimates. Another problem is that for chaotic systems the cost functions that have to be minimized to estimate states and parameters are so complex that common optimization routines may fail. We show that the inclusion of information
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Dissertations / Theses on the topic "Indirect Measurement Systems"

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Metcalf, Kristen M. "Accelerometer positioning issues and contemporary analysis methods." Diss., University of Iowa, 2018. https://ir.uiowa.edu/etd/6210.

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Purpose: Accelerometry is commonly used to objectively measure physical activity (PA), however, differential data collection methods and analysis techniques yield dissimilar outcomes. The aims of this research were to (1) understand how accelerometer output varies among accelerometers worn on the non-dominant wrist (NDW), dominant wrist (DW), and hip; (2) develop site-specific algorithms to predict activity type classification, activity intensity classification, and estimates of metabolic intensity; and (3) compare the algorithms in a free-living setting. Methods: Forty participants (16.8 – 64
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Grozdek, Marino. "Load Shifting and Storage of Cooling Energy through Ice Bank or Ice Slurry Systems modelling and experimental analysis /." Doctoral thesis, Stockholm : Skolan för industriell teknik och management, Kungliga Tekniska högskolan, 2009. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-11119.

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Linder, Jonas. "Indirect System Identification for Unknown Input Problems : With Applications to Ships." Doctoral thesis, Linköpings universitet, Reglerteknik, 2017. http://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-134126.

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System identification is used in engineering sciences to build mathematical models from data. A common issue in system identification problems is that the true inputs to the system are not fully known. In this thesis, existing approaches to unknown input problems are classified and some of their properties are analyzed.  A new indirect framework is proposed to treat system identification problems with unknown inputs. The effects of the unknown inputs are assumed to be measured through possibly unknown dynamics. Furthermore, the measurements may also be dependent on other known or measured inpu
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Sá, Denis Fabrício Sousa de. "MODELOS BASEADOS EM REDES NEURAIS ARTIFICIAIS COM APLICAÇÃO EM CONTROLE INDIRETO DE TEMPERATURA." Universidade Federal do Maranhão, 2015. http://tedebc.ufma.br:8080/jspui/handle/tede/295.

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Made available in DSpace on 2016-08-17T14:52:39Z (GMT). No. of bitstreams: 1 DISSERTACAO_DENIS FABRICIO SOUSA DE SA.pdf: 2409581 bytes, checksum: 4de5274676a1f75ffe2a1f6b46b1388c (MD5) Previous issue date: 2015-04-10<br>Coordenação de Aperfeiçoamento de Pessoal de Nível Superior<br>The representation of dynamic systems or plants via mathematical models occupies an important position in control system design that allow the performance evaluation of the controller during his development stage. These models are also used as an alternative to solve the problem of the hardness or impracticabili
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Cerqueira, Marcio Mendes. "Observadores de Estados para Sistemas de Medição Indireta e Controle RLQD-GA." Universidade Federal do Maranhão, 2010. http://tedebc.ufma.br:8080/jspui/handle/tede/432.

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Made available in DSpace on 2016-08-17T14:53:08Z (GMT). No. of bitstreams: 1 Marcio Mendes Cerqueira.pdf: 4042726 bytes, checksum: a65c6a7174271eecc553e3a5b0ceb33a (MD5) Previous issue date: 2010-02-05<br>Conselho Nacional de Desenvolvimento Científico e Tecnológico<br>Motivated by the necessity of efficient algorithms, it s presented the development of a methodology for the design and analysis of state observers in open and closed loops that are dedicated to monitoring and control of dynamic systems. The development of observers are based on OE models, description in state space and Kalma
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Arias, Jaime. "Energy Usage in Supermarkets - Modelling and Field Measurements." Doctoral thesis, Stockholm : Division of Applied Thermodynamics and Refrigeration, Department of Energy Technology, Royal Institute of Technology, 2005. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-217.

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Aimi, Vinícius. "Proposta e validação de uma nova metodologia para medição automatizada de folgas de trabalho em sistemas de direção automotiva." reponame:Biblioteca Digital de Teses e Dissertações da UFRGS, 2010. http://hdl.handle.net/10183/25038.

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Todos os anos, milhões de reais são gastos para cobrir os custos de garantia de caixas de direção que apresentam problemas de ruído e inconvenientes são causados nas linhas de montagem das grandes montadoras devido a este mesmo problema. Parte destas ocorrências se devem a um ruído específico chamado de Rattle Noise originado por uma operação de regulagem incorreta do bujão de ajuste. Em caixas de direção cujo “design” não permite uma medição direta da regulagem do sistema de ajuste, não existe um meio de avaliar a qualidade da operação e garantir que todas as peças estejam dentro das especifi
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Criscioni, Ferreira Patricia Fabiola. "Application of an open circuit indirect calorimetry system for gaseous exchange measurements in small ruminant nutrition." Doctoral thesis, Universitat Politècnica de València, 2016. http://hdl.handle.net/10251/64069.

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[EN] The main objective of this Thesis was to study the energy metabolism in small ruminants under different nutrition sceneries. As methodology we utilized indirect calorimetry instead of direct calorimetry or feeding trials. Within indirect calorimetry we worked with a portable open circuit gas exchange system with a head hood. This open circuit respiration system permitted completed the whole energy balance and evaluate the efficiency of utilization of the energy of the diet for different physiological circumstances as milk production in dairy goats or maintenance in sheep. Besides, we coul
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Wang, Chu-Gen. "An automated parameter measurement scheme for indirect field oriented induction machine drive systems." 1985. http://catalog.hathitrust.org/api/volumes/oclc/13354016.html.

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Lin, Bing-Fong, and 林秉豐. "Design of an Indirect-Contact ECG Measurement System Using Dual Movable Electrodes." Thesis, 2015. http://ndltd.ncl.edu.tw/handle/8jfacn.

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碩士<br>國立臺灣科技大學<br>電子工程系<br>103<br>In this thesis, an indirect-contact electrocardiography (IDC-ECG) measurement system using dual movable electrodes has been developed, and it can reduce motion artifacts and increase signal quality effectively. A “Quality Index” algorithm has also been proposed to assess signal quality. If signal quality is bad, we can avoid bad signal from calculating QRS wave, heart rate and heart rate variability to get more correct results. In the experiments, we design three actions such as sitting stable, moving forward and backward, turning left and right, moving front
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Book chapters on the topic "Indirect Measurement Systems"

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Müller, P. C. "Indirect Measurement of Nonlinear Effects by State Observers." In Nonlinear Dynamics in Engineering Systems. Springer Berlin Heidelberg, 1990. http://dx.doi.org/10.1007/978-3-642-83578-0_26.

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de Oliveira Souza, Paôla, José Maria Parente de Oliveira, and Letícia Helena Januário. "Indirect Measurement of Blood Pressure and Arm’s Body Composition in Women: Identification of Rules and Patterns Using Statistics and Data Mining." In Advances in Intelligent Systems and Computing. Springer International Publishing, 2019. http://dx.doi.org/10.1007/978-3-030-16187-3_7.

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Zaman, M., K. Kleineidam, L. Bakken, et al. "Methane Production in Ruminant Animals." In Measuring Emission of Agricultural Greenhouse Gases and Developing Mitigation Options using Nuclear and Related Techniques. Springer International Publishing, 2021. http://dx.doi.org/10.1007/978-3-030-55396-8_6.

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AbstractAgriculture is a significant source of GHGsglobally and ruminant livestock animals are one of the largest contributors to these emissions, responsible for an estimated 14% of GHGs (CH4and N2O combined) worldwide. A large portion of GHG fluxes from agricultural activities is related to CH4 emissions from ruminants. Both direct and indirect methods are available. Direct methods include enclosure techniques, artificial (e.g. SF6) or natural (e.g. CO2) tracer techniques, and micrometeorological methods using open-path lasers. Under the indirect methods, emission mechanisms are understood, where the CH4 emission potential is estimated based on the substrate characteristics and the digestibility (i.e. from volatile fatty acids). These approximate methods are useful if no direct measurement is possible. The different systems used to quantify these emission potentials are presented in this chapter. Also, CH4 from animal waste (slurry, urine, dung) is an important source: methods pertaining to measuring GHG potential from these sources are included.
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Zaman, M., K. Kleineidam, L. Bakken, et al. "Methodology for Measuring Greenhouse Gas Emissions from Agricultural Soils Using Non-isotopic Techniques." In Measuring Emission of Agricultural Greenhouse Gases and Developing Mitigation Options using Nuclear and Related Techniques. Springer International Publishing, 2021. http://dx.doi.org/10.1007/978-3-030-55396-8_2.

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AbstractSeveral approaches exist for measuring greenhouse gases (GHGs), mainly CO2, N2O, and CH4, from soil surfaces. The principle methods that are used to measure GHG from agricultural sites are chamber-based techniques. Both open and closed chamber techniques are in use; however, the majority of field applications use closed chambers. The advantages and disadvantages of different chamber techniques and the principal steps of operation are described. An important part of determining the quality of the flux measurements is the storage and the transportation of the gas samples from the field to the laboratory where the analyses are carried out. Traditionally, analyses of GHGs are carried out via gas chromatographs (GCs). In recent years, optical analysers are becoming increasingly available; these are user-friendly machines and they provide a cost-effective alternative to GCs. Another technique which is still under development, but provides a potentially superior method, is Raman spectroscopy. Not only the GHGs, but also N2, can potentially be analysed if the precision of these techniques is increased in future development. An important part of this chapter deals with the analyses of the gas concentrations, the calculation of fluxes, and the required safety measures. Since non-upland agricultural lands (i.e. flooded paddy soils) are steadily increasing, a section is devoted to the specificities of GHG measurements in these ecosystems. Specialised techniques are also required for GHG measurements in aquatic systems (i.e. rivers), which are often affected by the transfer of nutrients from agricultural fields and therefore are an important indirect source of emission of GHGs. A simple, robust, and more precise methodof ammonia (NH3) emission measurement is also described.
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Kuijpers, A. H. W. M., W. Schwanen, and E. Bongini. "Indirect Rail Roughness Measurement: The ARRoW System within the LECAV Project." In Notes on Numerical Fluid Mechanics and Multidisciplinary Design. Springer Japan, 2012. http://dx.doi.org/10.1007/978-4-431-53927-8_67.

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Warsza, Zygmunt L., and Jacek Puchalski. "Estimation of Uncertainties of Multivariable Indirect Measurements of Two DC Electrical Circuits." In Advances in Intelligent Systems and Computing. Springer International Publishing, 2019. http://dx.doi.org/10.1007/978-3-030-13273-6_58.

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Warsza, Zygmunt Lech, and Jacek Puchalski. "Estimation of Uncertainties in Indirect Multivariable Measurements: Part 1. Case of Correlated Quantities." In Advances in Intelligent Systems and Computing. Springer International Publishing, 2020. http://dx.doi.org/10.1007/978-3-030-40971-5_29.

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Warsza, Zygmunt Lech, and Jacek Puchalski. "Estimation of Uncertainties in Indirect Multivariable Measurements: Part 2. Influence of the Processing Function Accuracy." In Advances in Intelligent Systems and Computing. Springer International Publishing, 2020. http://dx.doi.org/10.1007/978-3-030-40971-5_30.

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Alvarez, Diego, Rafael C. González, Antonio López, and Juan C. Alvarez. "Comparison of Step Length Estimators from Wearable Accelerometer Devices." In Encyclopedia of Healthcare Information Systems. IGI Global, 2008. http://dx.doi.org/10.4018/978-1-59904-889-5.ch034.

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Video-based gait analysis, and other measurement devices such as force-plates, electrogoniometers, or electrodes to measure EMG signals are adequate for laboratory studies but are not designed for usability in ambulatory applications. Conversely, accelerometers provide easily portable systems that supply real-time data, which is why they are widely used in ambulatory diagnostic devices. However, such systems do not provide direct measure of several spatio-temporal parameters of interest such as step length, walking distance, or walking velocity. Instead, they have to be estimated with a mathematical model from indirect sensor measurements. Specifically, in this chapter we are concerned with the accelerometry- based estimation of the step length in straight-line human walking.
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Huang, Wenhao David, and Steven R. Aragon. "An Integrated Evaluation Approach for E-Learning Systems in Career and Technical Education." In Handbook of Research on E-Learning Applications for Career and Technical Education. IGI Global, 2009. http://dx.doi.org/10.4018/978-1-60566-739-3.ch031.

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As E-learning is gaining popularity in higher education, its evaluation becomes more critical than ever, to ensure the achievement of intended learning outcome. The effectiveness of E-learning system evaluation under current practices, however, remains questionable. One reason for such uncertainty is the lack of direct measurement while learning occurs since most evaluation data is collected after the learning process. Thus this chapter proposes an integrated evaluation approach for E-learning systems based on Cognitive Load Theory and grounded in the 4C/ID-model. Both direct and indirect measurements will be deployed in the integrated approach in the context of cognitive load. Furthermore all evaluation data can be translated into practical E-learning design solutions by triangulating with the 4C/ID-model. This chapter also suggests that future evaluation framework on E-learning should include factors from attitudinal and social aspects of learning process.
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Conference papers on the topic "Indirect Measurement Systems"

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Kamran, M. Ahmad, and Keum-Shik Hong. "Indirect measurement of brain activation using fNIRS." In 2013 13th International Conference on Control, Automaton and Systems (ICCAS). IEEE, 2013. http://dx.doi.org/10.1109/iccas.2013.6704193.

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Luo, X. "An indirect measurement method of control wheel force." In CSAA/IET International Conference on Aircraft Utility Systems (AUS 2020). Institution of Engineering and Technology, 2021. http://dx.doi.org/10.1049/icp.2021.0435.

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Zhang, Feng, Xiangjuan Li, and Mingshi Luo. "An Indirect Measurement Method for Electrical Impedance Scanning." In 2014 Fifth International Conference on Intelligent Systems Design and Engineering Applications (ISDEA). IEEE, 2014. http://dx.doi.org/10.1109/isdea.2014.46.

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Wang, Cong-Yu, Shun-Chieh Yu, Yu-Chen Lin, and Yuan-Hsiang Lin. "Fatigue detection system based on indirect-contact ECG measurement." In 2016 International Conference on Advanced Robotics and Intelligent Systems (ARIS). IEEE, 2016. http://dx.doi.org/10.1109/aris.2016.7886623.

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Burlamaqui, Aquiles, Luiz Marcos Garcia Goncalves, Samuel Azevedo, et al. "Indirect group interaction in interpeceptives virtual environments." In 2008 IEEE Conference on Virtual Environments, Human-Computer Interfaces and Measurement Systems. IEEE, 2008. http://dx.doi.org/10.1109/vecims.2008.4592759.

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da Fonseca Neto, Joao V., Renan Lima Pereira, Marcio Cerqueira Mendes, and Gustavo A. Andrade. "The design of Indirect Measurement Systems based on OE models." In 2008 3rd International Conference on Sensing Technology (ICST 2008). IEEE, 2008. http://dx.doi.org/10.1109/icsenst.2008.4757135.

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Lee, Dong-hwan, and Wonyong Sung. "Direct and indirect measurement of inter-cell capacitance in NAND flash memory." In 2014 IEEE Workshop on Signal Processing Systems (SiPS). IEEE, 2014. http://dx.doi.org/10.1109/sips.2014.6986078.

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Beer, Maik, Olaf Schrey, Bedrich J. Hosticka, and Rainer Kokozinski. "Dead time effects in the indirect time-of-flight measurement with SPADs." In 2017 IEEE International Symposium on Circuits and Systems (ISCAS). IEEE, 2017. http://dx.doi.org/10.1109/iscas.2017.8050357.

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Ming, Dong, Xiuyun Liu, Yuegang Dai, Baikun Wan, Yong Hu, and K. D. K. Luk. "Indirect biomechanics measurement on shoulder joint moments of walker-assisted gait." In 2009 IEEE International Conference on Virtual Environments, Human-Computer Interfaces and Measurements Systems (VECIMS). IEEE, 2009. http://dx.doi.org/10.1109/vecims.2009.5068917.

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Albakri, Mohammad I., and Pablo A. Tarazaga. "Part Authentication Using Indirect Electromechanical Impedance Measurements." In ASME 2020 Conference on Smart Materials, Adaptive Structures and Intelligent Systems. American Society of Mechanical Engineers, 2020. http://dx.doi.org/10.1115/smasis2020-2334.

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Abstract Motivated by its success as a structural health monitoring solution, electromechanical impedance measurements have been utilized as a means for non-destructive evaluation of conventionally and additively manufactured parts. In this process, piezoelectric transducers are either directly embedded in the part under test or bonded to its surface. While this approach has proven to be capable of detecting manufacturing anomalies, instrumentation requirements of the parts under test have hindered its wide adoption. To address this limitation, indirect electromechanical impedance measurement,
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