Academic literature on the topic 'RSI monitor'
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Journal articles on the topic "RSI monitor"
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Rodriguez, Cristian G., Borja Mateos-Prieto, and Eduard Egusquiza. "Monitoring of Rotor-Stator Interaction in Pump-Turbine Using Vibrations Measured with On-Board Sensors Rotating with Shaft." Shock and Vibration 2014 (2014): 1–8. http://dx.doi.org/10.1155/2014/276796.
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Current trends in design of pump-turbines have led into higher rotor-stator interaction (RSI) loads over impeller-runner. These dynamic loads are of special interest having produced catastrophic failures in pump-turbines. Determining RSI characteristics facilitates the proposal of actions that will prevent these failures. Pressure measurements all around the perimeter of the impeller-runner are appropriate to monitor and detect RSI characteristics. Unfortunately most installed pump-turbines are not manufactured with in-built pressure sensors in appropriate positions to monitor RSI. For this reason, vibration measurements are the preferred method to monitor RSI in industry. Usually vibrations are measured in two perpendicular radial directions in bearings where valuable information could be lost due to bearing response. In this work, in order to avoid the effect of bearing response on measurement, two vibration sensors are installed rotating with the shaft. The RSI characteristics obtained with pressure measurements were compared to those determined using vibration measurements. The RSI characteristics obtained with pressure measurements were also determined using vibrations measured rotating with shaft. These RSI characteristics were not possible to be determined using the vibrations measured in guide bearing. Finally, it is recommended to measure vibrations rotating with shaft to detect RSI characteristics in installed pump-turbines as a more practical and reliable method to monitor RSI characteristics.
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Struzik, Artur, Grzegorz Juras, Bogdan Pietraszewski, and Andrzej Rokita. "Effect of drop jump technique on the reactive strength index." Journal of Human Kinetics 52, no. 1 (September 1, 2016): 157–64. http://dx.doi.org/10.1515/hukin-2016-0003.
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AbstractThe basic drill of plyometric training aimed at improving lower limb power and jump height is a drop jump. This exercise can be performed using different techniques, which substantially affects jump variables. Therefore, the aim of this study was to compare the values of the reactive strength index (RSI) for countermovement drop jumps (CDJs) and bounce drop jumps (BDJs). The study was carried out in a group of 8 male youth basketball players. The tests were conducted using the AMTI BP600900 force plate to measure ground reaction forces and the Noraxon MyoMotion system to record kinematic data. Each player performed two CDJs and two BDJs from the height of 15, 30, 45 and 60 cm. The RSI was calculated as a ratio of jump height and contact time. Moreover, the RSI was determined for the amortization and take-off phases separately. Significant differences (p < 0.05) between RSI values for CDJs and BDJs were recorded for jumps from 30, 45 and 60 cm. Differences in RSI values for jumps from 15 cm were not significant. Furthermore, CDJ height values were significantly higher (p < 0.05) than the values recorded for BDJs. Times of contact, amortization and take-off during BDJs were significantly shorter (p < 0.05) than the respective values obtained for CDJs. Therefore, the use of the RSI to monitor plyometric training should be based on the drop jump technique that is commonly performed by basketball players.
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Putra, Andika Bagus Nur Rahma, M. Ihwanudin, Erwin Komara Mindarta, Poppy Puspitasari, and M. Mirza Abdillah Pratama. "Occupational Health And Safety (OHS) management for employees on the risk of diseases due to the intensity of computer use in the workplace/industry." MATEC Web of Conferences 204 (2018): 01016. http://dx.doi.org/10.1051/matecconf/201820401016.
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The research objectives of this study are: (1) urgent problems faced by employees when using computers; (2) computer components at risk of causing physical illness; and (3) mapping of disease experienced by OHS related employees on the computer. The subjects of this study are employees in three places of work / industry how many in Malang that work with computers with a duration of at least nine hours per day. The results of this study include: 1) the urgent problems experienced by the employees of the computer user include comfort (60%), position / feet distance (60%), monitor position at the work table (55%), mouse position (55%), (70%), rest breaks (75%), sitting position (70%), work desk condition (15%), room condition (25%), and rest break time (35%); 2) components on the computer that are at risk of causing computer-related OHS diseases that are computer CPU box (5%), computer monitor (25%), computer keyboard (10%), computer mouse (20%), computer cables (10%), and computer desk-chairs (30%); and 3) high-risk diseases suffered by employees of computer users include sicca-syndrome (55%), astenopia (70%), headache-comp (85%), Repetitive Strain Injuries (RSI) syndrom (55%), and Carpal tunnel syndrome (30%).
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García-Ávila, Fernando, Lía Ramos-Fernández, and César Zhindón-Arévalo. "Estimation of corrosive and scaling trend in drinking water systems in the city of Azogues, Ecuador." Ambiente e Agua - An Interdisciplinary Journal of Applied Science 13, no. 5 (October 1, 2018): 1. http://dx.doi.org/10.4136/ambi-agua.2237.
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The quality of drinking water flowing in a distribution network can possess corrosive characteristics that may cause the material degradation of pipes and accessories. This problem can result in reduction of the service life of pipes and create a major public health problem. The agreement between the physical-chemical water quality analysis and national standards are not enough to confirm the balance of the water quality in terms of corrosion. In order to predict pipe corrosion in water distribution system networks, the corrosive trend was evaluated using the Langelier (LSI), Ryznar (RSI), and Larson-Skold (LRI) indexes based on measurements of pH, temperature, total dissolved solids, alkalinity, calcium hardness, sulfate and chloride. This study was setup with 180 samples collected in six zones of the distribution network, from July to December of 2017, according to the standard methods for the analysis of drinking water. The results indicate a variation of the LSI from -1.22 to -1.68; RSI from 9.75 to 10.52 and LRI from 0.46 to 0.77. A linear model was fitted for each index to predict the corrosion with the water quality conditions of this study case. Therefore, the drinking water of the city of Azogues, Ecuador has a corrosive tendency from significant to severe. Corrosion indices were calculated to provide useful information on the water's corrosiveness. These results indicate the need to constantly monitor the corrosion rate in the distribution network and conduct a laboratory study to adjust effective parameters such as pH, in order to control corrosion.
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Qi, Haixia, Bingyu Zhu, Lingxi Kong, Weiguang Yang, Jun Zou, Yubin Lan, and Lei Zhang. "Hyperspectral Inversion Model of Chlorophyll Content in Peanut Leaves." Applied Sciences 10, no. 7 (March 26, 2020): 2259. http://dx.doi.org/10.3390/app10072259.
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The purpose of this study is to determine a method for quickly and accurately estimating the chlorophyll content of peanut plants at different plant densities. This was explored using leaf spectral reflectance to monitor peanut chlorophyll content to detect sensitive spectral bands and the optimum spectral indicators to establish a quantitative model. Peanut plants under different plant density conditions were monitored during three consecutive growth periods; single-photon avalanche diode (SPAD) and hyperspectral data derived from the leaves under the different plant density conditions were recorded. By combining arbitrary bands, indices were constructed across the full spectral range (350–2500 nm) based on blade spectra: the normalized difference spectral index (NDSI), ratio spectral index (RSI), difference spectral index (DSI) and soil-adjusted spectral index (SASI). This enabled the best vegetation index reflecting peanut-leaf SPAD values to be screened out by quantifying correlations with chlorophyll content, and the peanut leaf SPAD estimation models established by regression analysis to be compared and analyzed. The results showed that the chlorophyll content of peanut leaves decreased when plant density was either too high or too low, and that it reached its maximum at the appropriate plant density. In addition, differences in the spectral reflectance of peanut leaves under different chlorophyll content levels were highly obvious. Without considering the influence of cell structure as chlorophyll content increased, leaf spectral reflectance in the visible (350–700 nm): near-infrared (700–1300 nm) ranges also increased. The spectral bands sensitive to chlorophyll content were mainly observed in the visible and near-infrared ranges. The study results showed that the best spectral indicators for determining peanut chlorophyll content were NDSI (R520, R528), RSI (R748, R561), DSI (R758, R602) and SASI (R753, R624). Testing of these regression models showed that coefficient of determination values based on the NDSI, RSI, DSI and SASI estimation models were all greater than 0.65, while root mean square error values were all lower than 2.04. Therefore, the regression model established according to the above spectral indicators was a valid predictor of the chlorophyll content of peanut leaves.
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Chaabene, Helmi, Olaf Prieske, Melanie Lesinski, Ingo Sandau, and Urs Granacher. "Short-Term Seasonal Development of Anthropometry, Body Composition, Physical Fitness, and Sport-Specific Performance in Young Olympic Weightlifters." Sports 7, no. 12 (November 30, 2019): 242. http://dx.doi.org/10.3390/sports7120242.
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The aim of this study is to monitor short-term seasonal development of young Olympic weightlifters’ anthropometry, body composition, physical fitness, and sport-specific performance. Fifteen male weightlifters aged 13.2 ± 1.3 years participated in this study. Tests for the assessment of anthropometry (e.g., body-height, body-mass), body-composition (e.g., lean-body-mass, relative fat-mass), muscle strength (grip-strength), jump performance (drop-jump (DJ) height, countermovement-jump (CMJ) height, DJ contact time, DJ reactive-strength-index (RSI)), dynamic balance (Y-balance-test), and sport-specific performance (i.e., snatch and clean-and-jerk) were conducted at different time-points (i.e., T1 (baseline), T2 (9 weeks), T3 (20 weeks)). Strength tests (i.e., grip strength, clean-and-jerk and snatch) and training volume were normalized to body mass. Results showed small-to-large increases in body-height, body-mass, lean-body-mass, and lower-limbs lean-mass from T1-to-T2 and T2-to-T3 (∆0.7–6.7%; 0.1 ≤ d ≤ 1.2). For fat-mass, a significant small-sized decrease was found from T1-to-T2 (∆13.1%; d = 0.4) and a significant increase from T2-to-T3 (∆9.1%; d = 0.3). A significant main effect of time was observed for DJ contact time (d = 1.3) with a trend toward a significant decrease from T1-to-T2 (∆–15.3%; d = 0.66; p = 0.06). For RSI, significant small increases from T1-to-T2 (∆9.9%, d = 0.5) were noted. Additionally, a significant main effect of time was found for snatch (d = 2.7) and clean-and-jerk (d = 3.1) with significant small-to-moderate increases for both tests from T1-to-T2 and T2-to-T3 (∆4.6–11.3%, d = 0.33 to 0.64). The other tests did not change significantly over time (0.1 ≤ d ≤ 0.8). Results showed significantly higher training volume for sport-specific training during the second period compared with the first period (d = 2.2). Five months of Olympic weightlifting contributed to significant changes in anthropometry, body-composition, and sport-specific performance. However, hardly any significant gains were observed for measures of physical fitness. Coaches are advised to design training programs that target a variety of fitness components to lay an appropriate foundation for later performance as an elite athlete.
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Ni, Yang, Li, Zhao, and He. "Decreasing Trend of Geohazards Induced by the 2008 Wenchuan Earthquake Inferred from Time Series NDVI Data." Remote Sensing 11, no. 19 (September 20, 2019): 2192. http://dx.doi.org/10.3390/rs11192192.
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The occurrence of aftershocks and geohazards (landslides, collapses, and debris flows) decreases with time following a major earthquake. The 12 May 2008 Wenchuan Earthquake in Sichuan, China, provides the opportunity to characterize the subsequent spatiotemporal evolution of geohazards. Following the 12 May 2008 Wenchuan Earthquake, the incidence of geohazards first increased sharply, representing a “post-earthquake effect”, before starting to decrease. We compared the spatial distribution of the area affected by vegetation damage (AVD) triggered by large and medium-scale geohazards (LMG). We studied the interval prior to the 12 May 2008 Wenchuan Earthquake (2001–2007), the co-seismic period (2008), and the post-earthquake interval (2009–2016) and characterized the trend of decreasing geohazards at a macro scale. In vegetated areas, geohazards often seriously damage the vegetation, resulting in pronounced contrasts with the surrounding surface in terms of color tone, texture, morphology, and Normalized Difference Vegetation Index (NDVI) which are evident in remote sensing images (RSI). In principle, it is possible to use the strong positive correlation between AVD and geohazards to determine indirectly the resulting vegetation and to monitor its spatiotemporal evolution. In this study we attempted to characterize the process of geohazard evolution in the region affected by the 12 May 2008 Wenchuan Earthquake during 2001–2016. Our approach was to analyze the characteristics of areas with reduced vegetation coverage caused by LMG. Our principal findings are as follows: (i) Before the Wenchuan Earthquake (during 2001–2007), there was no evidence for a linear increase in the number of LMG with time; thus, the geological environment was relatively stable and the geohazards were mainly induced by rainfall events. (ii) The 12 May 2008 Wenchuan Earthquake was the main cause of a surge in geohazards in 2008, with the characteristics of seismogenic faults and strong aftershocks determining the spatial distribution of geohazards. (iii) Following the 12 May 2008 Wenchuan Earthquake (during 2009–2016) the incidence of geohazards exhibited an oscillating pattern of attenuation, with a decreasing trend of higher-grade seismic intensity. The intensity of geohazards was related to rainfall and seismogenic faults, and also to the number, magnitude and depth of new earthquakes following the 12 May 2008 Wenchuan Earthquake. Our results provide a new perspective on the temporal pattern of attenuation of seismic geohazards, with implications for disaster prevention and mitigation and ecological restoration in the areas affected by the 12 May 2008 Wenchuan Earthquake.
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Bollu, P., P. Gurung, T. Mehta, A. Monegro, S. Manjamalai, M. Goyal, M. Thakkar, and P. Sahota. "0619 To Rely or No to Rely: Understanding the Demographics and Polysomnographic Features of False Negative Home Sleep Apnea Testing." Sleep 43, Supplement_1 (April 2020): A237. http://dx.doi.org/10.1093/sleep/zsaa056.616.
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Abstract Introduction The current gold standard for a definitive diagnosis of OSA is an in-center Polysomnography (PSG). Home Sleep Apnea Testing(HSAT) has become an important tool in identifying high-risk populations. One of the limitations of the study is the lack of Electroencephalographic (EEG) data. This prevents the inclusion of Respiratory Effort Related Arousals (RERAs). We attempted to identify the patients whose HSAT showed an REI of less than 5 but are at risk for having sleep apnea based on the presence of airflow and thoraco-abdominal fluctuations. Methods Patients in this study were those that underwent HSAT from September 2016 till June of 2019. The studies reviewed and interpreted by board certified Sleep Specialists. Studies were done using nox-T3 sleep monitor and Nomad portable Home Sleep Testing type III devices-Both are type 3 Portable Monitors. Only those patients whose REI in their HSAT less than 5 were included in this study. All these patients had multiple airflow fluctuations in their HSAT that raised the suspicion for the presence of RERAs. None of these patients had significant hypoxemia in the HSAT.Airflow fluctuations were defined by the presence of fluctuations in the signal in the airflow channel along with increasing thoracoabdominal channels. Those patients with REI of less than 5 and without airflow fluctuations were excluded from the study. Results A total of 178 patients were recommended to undergo an in-center polysomnogram. Of those, 92 patients completed their polysomnogram with 59 patients ending up with a diagnosis of sleep apnea while 33 did not suggesting a false negative rate of 64.13%. Of those who were positive, 39 were females while 20 were males. Both groups did not differ significantly. Females had a median BMI of 32.9(28.19 for males), a median ESS of 11(8 in males) and a median RDI of 14.8(13.25). Conclusion Our study shows that both Home Sleep apnea testing can have a high proportion of false-negative results in patients exhibiting thoraco-abdominal and airflow fluctuations. The interpreting physicians should understand the limitations of the HSAT and should have a low threshold to recommend an in-center polysomnogram. Support None.
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Leduc, Cédric, Jason Tee, Mathieu Lacome, Jonathon Weakley, Jeremy Cheradame, Carlos Ramirez, and Ben Jones. "Convergent Validity, Reliability, and Sensitivity of a Running Test to Monitor Neuromuscular Fatigue." International Journal of Sports Physiology and Performance 15, no. 8 (September 1, 2020): 1067–73. http://dx.doi.org/10.1123/ijspp.2019-0319.
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Purpose: To investigate the convergent validity, reliability, and sensitivity over a week of training of a standardized running test to measure neuromuscular fatigue. Methods: Twenty male rugby union players were recruited for the study, which took place during preseason. The standardized running test consisted of four 60-m runs paced at ~5 m·s−1 with 33 seconds of recovery between trials. Data from micromechanical electrical systems were used to calculate a running-load index (RLI), which was a ratio between the mechanical load and the speed performed during runs. RLI was calculated by using either the entire duration of the run or a constant-velocity period. For each type of calculation, either an individual directional or the sum of the 3 components of the accelerometer was used. A measure of leg stiffness was used to assess the convergent validity of the RLI. Results: Unclear to large relationships between leg stiffness and RLI were found (r ranged from −.20 to .62). Regarding reliability, small to moderate (.47–.86) standardized typical errors were found. The sensitivity analysis showed that the leg stiffness presented a very likely trivial change over the course of 1 week of training, whereas RLI showed very likely small to a most likely large change. Conclusions: This study showed that RLI is a practical method to measure neuromuscular fatigue. In addition, such a methodology aligns with the constraint of elite team-sport setup due to its ease of implementation in practice.
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Lee, JuHyoung, Hyeonguk Yoon, Sungmin Lee, and Jaeheon Lee. "Resizing effect of image and ROI in using control charts to monitor image data." Korean Journal of Applied Statistics 30, no. 3 (June 30, 2017): 487–501. http://dx.doi.org/10.5351/kjas.2017.30.3.487.
Full textDissertations / Theses on the topic "RSI monitor"
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Ržonca, Michal. "On-line korekce dráhy robotu na základě dat ze snímače vzdálenosti." Master's thesis, Vysoké učení technické v Brně. Fakulta strojního inženýrství, 2021. http://www.nusl.cz/ntk/nusl-443251.
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The main aim of this master’s thesis is to provide online path correction of 6 – axis robot leaded by an external distance measuring sensor interface. First part is describing the actual state and required options of some robot manufacturers. Next part justifies selection and is describing the real robotic cell. Third part is focused on programming of path correction of Kuka KR16 based on generated signal and also based on signal from distance sensor interface. There is also described the communication between PLC and robot and how to display data from robot to HMI. Last part is focused on data analysis and is describing some problems discovered by application of path correction.
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Peixoto, Roberta Pereira. "Monitor educacional (TV Pendrive): a tecnologia nas aulas de língua inglesa da escola pública." Instituto de Letras, 2013. http://repositorio.ufba.br/ri/handle/ri/15536.
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O ensino da língua inglesa, que hoje ostenta o status de língua franca global, sempre foi marcado pelo pioneirismo em relação ao uso de tecnologias. Tal como o conhecimento de uma língua estrangeira (LE) facilita o acesso ao mundo globalizado, as novas tecnologias,especialmente a internet, favorecem o desenvolvimento mais amplo e mais dinâmico do cada vez mais complexo processo de aquisição de línguas no ambiente instrucional. O contexto da escola pública brasileira é historicamente marcado pelo discurso sobre a impossibilidade de se aprender uma LE devido, entre tantas alegações, à carência de estrutura nesse espaço educacional. Esta pesquisa qualitativa de cunho etnográfico tem como objetivo geral analisar como a tecnologia de informação e comunicação está sendo usada nas aulas de línguas estrangeiras, no caso, inglês, na rede estadual de ensino, a partir da implementação do projeto Monitor Educacional (ME), da Secretaria da Educação do Estado da Bahia, e como esta iniciativa reflete na prática docente. Os fundamentos teóricos buscam contextualizar o leitor a respeito do inglês no mundo e as implicações políticas, culturais e ideológicas de seu ensino,bem como sobre a relação entre as novas tecnologias e o ensino de línguas. Inicialmente, foi feito um diagnóstico sobre a utilização do ME no estado com a participação de 66 (sessenta e seis) professores, oriundos de 30 (trinta) municípios baianos. A partir desta descrição, foram selecionados 4 (quatro) professores, lotados em unidades de ensino nos municípios de Elísio Medrado, Salvador e Itaberaba, para a realização das duas etapas seguintes da coleta de dados: o registro etnográfico das aulas e a gravação das entrevistas semiestruturadas. A experiência desses professores demonstrou a partir da análise dos dados gerados que o ME é visto como uma ação significativa para o contexto da escola pública e proporciona discussões e reflexões relevantes sobre o uso das novas tecnologias no ensino de línguas (materna ou estrangeira), contribuindo, não apenas para a materialização de uma proposta inovadora de ensino de inglês como LE em tal realidade, mas também, sob a perspectiva da Linguística Aplicada, para o debate voltado para a necessidade de demandarem-se políticas de educação linguística que se provem eficientes e efetivas nos seus resultados e que sejam capazes de contribuir, acima de tudo, para a formação cidadã dos aprendizes da escola pública, garantindo-lhes, de fato e de direito, o acesso pleno à língua de comunicação global da contemporaneidade.
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Chun-KaiFeng and 馮俊凱. "Camera Capture and Signal Energy Detection for GPS RFI Monitor." Thesis, 2014. http://ndltd.ncl.edu.tw/handle/57532361260737618614.
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碩士國立成功大學
民航研究所
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SUMMARY In order to confirm existence of GPS (Global Positioning System) interference and try to identify possible interference sources, this work respectively used the AGC (Automatic Gain Control) theory and the modified energy detector measurement with IF (Intermediate Frequency) signal on the GPS receiver frontend for real time GPS RFI (Radio Frequency Interference) monitors. Based on the results of experiments, the existence of GPS interference was confirmed and some possible sources of interference were identified near our university. In the future, the proposed GPS interference monitor scheme could be implemented at airport vicinity to protect the GPS spectrum from possible interferences to harden aviation satellite navigation service. INTRODUCTION The civil aviation organizations worldwide are implementing next generation communication, navigation, surveillance, and air traffic management (CNS/ATM), and the enabling technology of this CNS/ATM system is the GPS, for instance, the time synchronization of the air data network and the air communication network, and aircraft navigation for approach and landing. However, the transmitting power of GPS signal is extremely low and thus vulnerable to intentional or unintentional RFIs. Because GPS is the enabling technology of the modern civil aviation applications, there would be a significant impact on the aviation operations if GPS service is degraded. Thus, the objectives of this work are to confirm the existence of GPS interference and try to identify possible sources of GPS interference sources in our daily life. METHODS The AGC theory and the modified energy detector measurement with IF signal were applied on the GPS receiver frontend for real time GPS RFI (Radio Frequency Interference) monitors. Any signal that was closed to the GPS L1 band might be able to pass the band-pass filter of one GPS frontend, and the noise floor would be therefore raised such that the receiver could not acquire or track the GPS satellite. Based on the prior work, the AGC in the receiver frontend gave an indication of the noise level that was received by the frontend. Therefore, with the calibration of daily satellites AGC patterns at the same location, the large changes in the AGC could be identified as possible RFI events. The use of AGC for RFI monitoring was attractive because no additional component was needed to add to the receiver hardware. The AGC function is a simple mechanism that be used on detecting interference. But only few receivers could output this AGC information, the other method based on the signal energy measurement which called the modified energy detector measurement method was proposed. In addition, our GPS RFI monitor system had the real-time processing part and the post-processing part. The real-time processing part was developed by the applications of multi-thread and was presented in the implemented GUI (Graphical User Interface). The post-processing part included the analyses of time-frequency characteristics and user positioning. The time-frequency analysis applied the WELCH algorithm to the PSD (Power Spectral Density) measurement, and the user positioning analysis presented the acquisition and tracking result in baseband. RESULTS AND DISCUSSION In this work, the focus was on detecting and analyzing the moving vehicles which might carry possible GPS interference sources on the roads nearby our university. The monitor system first recorded the IF data while the possible GPS interference event took place, and then the system generated the corresponding time-frequency plots to evaluate the characteristics of the possible GPS interference. In addition, the possible intentional GPS interference source was the major interest of this work, so the detection scheme included a video camera to capture the pictures of the surrounding area when the detection was triggered. These pictures as well as the corresponding time-frequency plots would be very helpful to classify the possible GPS interference source. Finally, the GPS SDR (Software Defined Radio) receiver was used to change the receiver parameters and structures to verify the impacts of the various interference on GPS signal processing and the resulting user positioning performance. Figures 1 and 2 were the experimental results by the monitor system with AGC detector and the modified energy detector. Figure 1 showed the interference event that blocked all GPS satellite signals for at least 80 seconds and Figure 2 illustrated the possible source of interference of interest on the road. CONCLUSION The objectives of this work were the design of GPS RFI detection scheme that could identify some moving vehicles which might carry possible GPS interference sources on the roads. A GPS RFI monitor system was developed which included a GPS SDR receiver with the AGC based detector and the energy based RFI detector to detect possible interference events and a video camera recorded the corresponding video stream simultaneously with RFI events. As shown in the experimental results, the developed GPS RFI monitor system successfully detected and identified the possible GPS RFI sources on the roads around our university. Finally, the impacts of the detected GPS RFI event on the GPS signal processing and the resulting positioning performance were presented in this thesis as well.
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"Monitor-Based In-Field Wearout Mitigation for CMOS RF Integrated Circuits." Doctoral diss., 2017. http://hdl.handle.net/2286/R.I.46353.
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abstract: Performance failure due to aging is an increasing concern for RF circuits. While most aging studies are focused on the concept of mean-time-to-failure, for analog circuits, aging results in continuous degradation in performance before it causes catastrophic failures. In this regard, the lifetime of RF/analog circuits, which is defined as the point where at least one specification fails, is not just determined by aging at the device level, but also by the slack in the specifications, process variations, and the stress conditions on the devices. In this dissertation, firstly, a methodology for analyzing the performance degradation of RF circuits caused by aging mechanisms in MOSFET devices at design-time (pre-silicon) is presented. An algorithm to determine reliability hotspots in the circuit is proposed and design-time optimization methods to enhance the lifetime by making the most likely to fail circuit components more reliable is performed. RF circuits are used as test cases to demonstrate that the lifetime can be enhanced using the proposed design-time technique with low area and no performance impact. Secondly, in-field monitoring and recovering technique for the performance of aged RF circuits is discussed. The proposed in-field technique is based on two phases: During the design time, degradation profiles of the aged circuit are obtained through simulations. From these profiles, hotspot identification of aged RF circuits are conducted and the circuit variable that is easy to measure but highly correlated to the performance of the primary circuit is determined for a monitoring purpose. After deployment, an on-chip DC monitor is periodically activated and its results are used to monitor, and if necessary, recover the circuit performances degraded by aging mechanisms. It is also necessary to co-design the monitoring and recovery mechanism along with the primary circuit for minimal performance impact. A low noise amplifier (LNA) and LC-tank oscillators are fabricated for case studies to demonstrate that the lifetime can be enhanced using the proposed monitoring and recovery techniques in the field. Experimental results with fabricated LNA/oscillator chips show the performance degradation from the accelerated stress conditions and this loss can be recovered by the proposed mitigation scheme.Dissertation/Thesis
Doctoral Dissertation Electrical Engineering 2017
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"Mindfulness and Wearing a Fitbit Activity Monitor Increases Levels of Physical Activity." Master's thesis, 2014. http://hdl.handle.net/2286/R.I.24985.
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abstract: Interest in health and wellness has significantly increased in today's society. Living a healthy and active lifestyle is suggested to promote overall physical and psychological well-being. This study explored the effects of wearing a Fitbit Zip activity monitor and the impact of expressing mindfulness on levels of physical activity. It was predicted that expressing mindfulness, as measured by the use of present-tense language during the daily emotional writing task, would moderate the relationship between wearing a Fitbit Zip activity monitor and change in physical activity. Specifically, it was hypothesized daily monitoring would only lead to increased activity among those higher in mindful language. Over the course of five days, participants were asked to wear a Fitbit Zip and to complete a daily questionnaire and writing task at the end of each evening. On the last day of the study, participants completed a follow-up assessment, which suggested that the combination of wearing a Fitbit Zip activity monitor and expressing more mindfulness throughout the week increased levels of physical activity. An important issue for future research is to conduct this study for a longer period of time in order to get more variability in the data. However, despite the limitations of the design, these findings suggest that activity monitoring may be a promising way to promote healthy lifestyle change.Dissertation/Thesis
M.S. Psychology 2014
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"Acute Glycemic Response to Different Strategies of Breaking Up Sedentary Time." Doctoral diss., 2019. http://hdl.handle.net/2286/R.I.54848.
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abstract: Most studies that explored the health benefits of interrupting sitting time focused on using different modalities (i.e., comparing walking vs standing breaks)33,36,59. However, experimental studies that directly compare patterns of interrupting sitting time through standing only are needed to advance the field. This study aimed to (i) determine if there is a difference in glucose response between continuous sitting (CS) and two intermittent standing regimes (high frequency, low duration breaks (HFLD) and low frequency, high duration breaks (LFHD)) and (ii) to determine if there is a difference in glucose response between the two strategies (HFLD vs. LFHD).
Ten sedentary employees (mean±SD age 46.8±10.6 years; 70% female) with impaired fasting glucose (mean glucose= 109.0±9.8 mg/dL) participated. Eligible participants were invited to three 7.5 hour laboratory visits where they were randomized to perform each study conditions: (i) CS, (ii) HFLD and (iii) LFHD. Standardized meals (breakfast and lunch) were given with each meal providing 33% of the participant’s total daily caloric needs following a typical American diet (50-60% carbohydrates, 25-30% fat, and 10-20% protein). Participants wore an activPAL device to measure compliance with the sit-stand condition and a continuous glucose monitor to measure post-prandial glucose response. Post-prandial mean glucose, incremental area under the curve and mean amplitude glycemic excursion between conditions were evaluated using linear mixed models.
Participants demonstrated high compliance with the study condition. The results indicated that the mean glucose of the HFLD condition were significantly lower (p< .01) than the CS condition with mean difference of -7.70 (-11.98, -3.42) mg/dL·3.5h and -5.76 (-9.50, -2.03) mg/dL·7h for lunch and total time, respectively. Furthermore, the mean post-prandial glucose during lunch and total time were significantly lower in the HFLD condition compared to the LFHD condition with mean difference of -9.94 (-14.13, -5.74) mg/dL·3.5h and -6.23 (-9.93, -2.52) mg/dL·7h, respectively. No differences were found between the CS and LFHD conditions.
This study provides evidence favoring the use of frequent interruptions in sitting time to improve glycemic control of prediabetic individuals. In contrast, less frequent, although longer bouts of standing resulted in similar post-prandial glucose profile to that of the continuous sitting condition despite total standing time being equal to the LFHD condition.Dissertation/Thesis
Doctoral Dissertation Physical Activity, Nutrition and Wellness 2019
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"Monitors-Based Measurement of Sedentary Behaviors and Light Physical Activity in Adults." Doctoral diss., 2017. http://hdl.handle.net/2286/R.I.44437.
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abstract: Having accurate measurements of sedentary behaviors is important to understand relationships between sedentary behaviors and health outcomes and to evaluate changes in interventions and health promotion programs designed to reduce sedentary behaviors. This dissertation included three projects that examined measurement properties of wearable monitors used to measure sedentary behaviors. Project one examined the validity of three monitors: the ActiGraph GT3X+, activPAL™, and SenseWear 2. None of the monitors were equivalent with the criterion measure of oxygen uptake to estimate the energy cost of sedentary and light-intensity activities. The ActivPAL™ had the best accuracy as compared with the other monitors. In project two, the accuracy of ActiGraph GT3X+and GENEActiv cut-points used to assess sedentary behavior were compared with direct observation during free-living conditions. New vector magnitude cut-points also were developed to classify time spent in sedentary- and stationary behaviors during free-living conditions. The cut-points tested had modest overall accuracy to classify sedentary time as compared to direct observation. New ActiGraph 1-minute vector cut-points increased overall accuracy for classifying sedentary time. Project 3 examined the accuracy of the sedentary sphere by testing various arm elevation- and movement-count configurations using GENEActiv and ActiGraph GT3X+ data obtained during free-living conditions. None of the configurations were equivalent to the criterion measure of direct observation. The best configuration of the GENEActiv was: worn on the dominant wrist at 15 degrees below the horizontal plane with a cut-point <489 for each 15-second interval. The best configuration for the ActiGraph was: worn on the non-dominant wrist at 5° below the horizontal plane with a cut-point of <489 counts for each 15-second interval. Collectively, these findings indicate that the wearable monitors and methods examined in this study are limited in their ability to assess sedentary behaviors and light intensity physical activity. Additional research is needed to further understand the scope and limitations of wearable monitors and methods used to assess sedentary behaviors and light intensity physical activity.Dissertation/Thesis
Doctoral Dissertation Physical Activity, Nutrition and Wellness 2017
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"Strength Braining: An Innovation Countering Fifth-Grade Underachievement in Mathematics Through Growth Mindset and Self-Regulation." Doctoral diss., 2020. http://hdl.handle.net/2286/R.I.57063.
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abstract: The problem of practice addressed in this mixed methods action research study is the underachievement of fifth-grade students in mathematics. This study explores the effects of an innovation designed to help students develop a growth mindset by utilizing self-regulation strategies to improve academic growth in mathematics. Students’ underachievement in mathematics has been illustrated by both state and international assessments. Throughout the decades, mathematics instruction and reforms have varied, but overall students’ psychological needs have been neglected. This innovation was designed to develop students’ psychological characteristics regarding facing challenges in mathematics. For this purpose, two guiding theories were utilized to frame this research study, Dweck’s mindset theory and self-regulation theory. To address the research questions of this study, pre- and post-questionnaire data, observational data and student work was analyzed. Results of the qualitative data indicated that the innovation positively impacted students’ mindsets and use of self-regulation strategies. However, quantitative data indicated the innovation had no effect on students’ use of self-regulation strategies or academic growth, and a negative impact on students’ mindsets.Dissertation/Thesis
Doctoral Dissertation Educational Leadership and Policy Studies 2020
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"Temperature Compensated, High Common Mode Range, Cu-Trace Based Current Shunt Monitors Design and Analysis." Doctoral diss., 2011. http://hdl.handle.net/2286/R.I.9189.
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abstract: Sensing and controlling current flow is a fundamental requirement for many electronic systems, including power management (DC-DC converters and LDOs), battery chargers, electric vehicles, solenoid positioning, motor control, and power monitoring. Current Shunt Monitor (CSM) systems have various applications for precise current monitoring of those aforementioned applications. CSMs enable current measurement across an external sense resistor (RS) in series to current flow. Two different types of CSMs designed and characterized in this paper. First design used direct current reading method and the other design used indirect current reading method. Proposed CSM systems can sense power supply current ranging from 1mA to 200mA for the direct current reading topology and from 1mA to 500mA for the indirect current reading topology across a typical board Cu-trace resistance of 1 ohm with less than 10 µV input-referred offset, 0.3 µV/°C offset drift and 0.1% accuracy for both topologies. Proposed systems avoid using a costly zero-temperature coefficient (TC) sense resistor that is normally used in typical CSM systems. Instead, both of the designs used existing Cu-trace on the printed circuit board (PCB) in place of the costly resistor. The systems use chopper stabilization at the front-end amplifier signal path to suppress input-referred offset down to less than 10 µV. Switching current-mode (SI) FIR filtering technique is used at the instrumentation amplifier output to filter out the chopping ripple caused by input offset and flicker noise by averaging half of the phase 1 signal and the other half of the phase 2 signal. In addition, residual offset mainly caused by clock feed-through and charge injection of the chopper switches at the chopping frequency and its multiple frequencies notched out by the since response of the SI-FIR filter. A frequency domain Sigma Delta ADC which is used for the indirect current reading type design enables a digital interface to processor applications with minimally added circuitries to build a simple 1st order Sigma Delta ADC. The CSMs are fabricated on a 0.7µm CMOS process with 3 levels of metal, with maximum Vds tolerance of 8V and operates across a common mode range of 0 to 26V for the direct current reading type and of 0 to 30V for the indirect current reading type achieving less than 10nV/sqrtHz of flicker noise at 100 Hz for both approaches. By using a semi-digital SI-FIR filter, residual chopper offset is suppressed down to 0.5mVpp from a baseline of 8mVpp, which is equivalent to 25dB suppression.Dissertation/Thesis
Ph.D. Electrical Engineering 2011
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"Determining the Integrity of Applications and Operating Systems using Remote and Local Attesters." Doctoral diss., 2011. http://hdl.handle.net/2286/R.I.9147.
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abstract: This research describes software based remote attestation schemes for obtaining the integrity of an executing user application and the Operating System (OS) text section of an untrusted client platform. A trusted external entity issues a challenge to the client platform. The challenge is executable code which the client must execute, and the code generates results which are sent to the external entity. These results provide the external entity an assurance as to whether the client application and the OS are in pristine condition. This work also presents a technique where it can be verified that the application which was attested, did not get replaced by a different application after completion of the attestation. The implementation of these three techniques was achieved entirely in software and is backward compatible with legacy machines on the Intel x86 architecture. This research also presents two approaches to incorporating software based "root of trust" using Virtual Machine Monitors (VMMs). The first approach determines the integrity of an executing Guest OS from the Host OS using Linux Kernel-based Virtual Machine (KVM) and qemu emulation software. The second approach implements a small VMM called MIvmm that can be utilized as a trusted codebase to build security applications such as those implemented in this research. MIvmm was conceptualized and implemented without using any existing codebase; its minimal size allows it to be trustworthy. Both the VMM approaches leverage processor support for virtualization in the Intel x86 architecture.Dissertation/Thesis
Ph.D. Computer Science 2011
Books on the topic "RSI monitor"
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Voyage du roi au camp de Saint-Omer et dans les départements du Nord: Septembre 1827 : extrait du Moniteur. Steenvoorde: Foyer culturel de l'Houtland, 1993.
Find full textBook chapters on the topic "RSI monitor"
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Bhattacharya, Sarani, and Debdeep Mukhopadhyay. "Who Watches the Watchmen?: Utilizing Performance Monitors for Compromising Keys of RSA on Intel Platforms." In Lecture Notes in Computer Science, 248–66. Berlin, Heidelberg: Springer Berlin Heidelberg, 2015. http://dx.doi.org/10.1007/978-3-662-48324-4_13.
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Rachlin, Robert. "How to Use Ratios to Monitor ROI Performance." In Return on Investment Manual, 38–48. Routledge, 2019. http://dx.doi.org/10.4324/9781315503813-3.
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Khanuja, Harmeet Kaur, and Dattatraya Adane. "To Monitor and Detect Suspicious Transactions in a Financial Transaction System Through Database Forensic Audit and Rule-Based Outlier Detection Model." In Organizational Auditing and Assurance in the Digital Age, 224–55. IGI Global, 2019. http://dx.doi.org/10.4018/978-1-5225-7356-2.ch012.
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The objective of this chapter is to monitor database transactions and provide information accountability to databases. It provides a methodology to retrieve and standardize different audit logs in a uniform XML format which are extracted from different databases. The financial transactions obtained through audit logs are then analyzed with database forensic audit. The transactions are examined, detected, and classified as per regulations and well-defined RBI antimony laundering rules to obtain outliers and suspicious transactions within audit logs. Bayesian network is used in this research to represent rule-based outlier detection model which identifies the risk level of the suspicious transactions.
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Seetharaman, K. "A Fully Automated Crop Disease Monitoring and Management System Based on IoT." In Deep Learning Applications and Intelligent Decision Making in Engineering, 192–211. IGI Global, 2021. http://dx.doi.org/10.4018/978-1-7998-2108-3.ch008.
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In recent years, the IoT has evolved and plays a significant role in many fields like smart city, precision farm, traffic signal control system, and so on. In this chapter, an IoT-based crop disease management (CDM) system is proposed that adopts statistical methods for identifying disease, recognizing a right pesticide, and recommending a right pesticide to farmers. The proposed CDM system monitors the agricultural crops with the help of a CCD camera. The camera continuously photographs the crops and sends them to a Raspberry PI processor, which is placed at a workstation and it is connected to the camera with the help of IoT components. The proposed CDM system analyses the crop leaf images, such as removes noise; segments region of interest (RoI), that is, diseased part of the leaf image; extracts features from the RoI; and identifies the disease and takes appropriate measures to control the disease. The proposed IoT-based CDM system was experimented, and the results obtained encourage both the farmers and the researchers in this field.
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Nisar, Humaira, Zhen Yao Lim, and Kim Ho Yeap. "A Simple Non-Invasive Automated Heart Rate Monitoring System Using Facial Images." In Advances in Bioinformatics and Biomedical Engineering, 100–122. IGI Global, 2016. http://dx.doi.org/10.4018/978-1-4666-8811-7.ch005.
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In this chapter we will discuss a simple non invasive automated heart rate monitoring method. Commonly heart rate is measured by using heart rate monitor devices. Many patients do not feel comfortable when they use contact devices for diagnostic purposes. Our algorithm gives a non-invasive way of heart rate measurement. The first step is to record a video. After 5 frames of the video are captured, the face is detected. A total of 300 frames will be used for further processing. At this stage, ROI (part of forehead) will be cropped out automatically. All image frames are in RGB color model, so these will be separated into 3 channels. For analysis, graph normalization is applied, which uses mean and standard deviation. Fast Fourier transform is used to plot the power spectrum of the traces. This power spectrum will have a peak if the heart rate is detected. We used RGB, HSI, YCbCr, YIQ, and CIE LAB color models for analysis. The best result is achieved with RGB color model followed by CIELab. The average accuracy is 95.32%.
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Han, Jungong, Lykele Hazelhoff, and Peter H. N. de With. "Neonatal Monitoring Based on Facial Expression Analysis." In Neonatal Monitoring Technologies, 303–23. IGI Global, 2012. http://dx.doi.org/10.4018/978-1-4666-0975-4.ch014.
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Prematurely born infants are observed in a Neonatal Intensive Care Unit (NICU) for medical treatment. These infants are nursed in an incubator, where their vital body functions such as heart rate, respiration, blood pressure, oxygen saturation, and temperature are continuously monitored. However, the existing monitoring system is lack of the measurement for visual expression of the neonatal. Therefore, valuable information about the well being of the patient (e.g., pain and discomfort) may pass unnoticed. This chapter aims at designing a prototype of an automated video monitoring system for the detection of discomfort in newborns by analyzing their facial expression. The system consists of several algorithmic components, ranging from the face detection, ROI determination, facial feature extraction, to behavior stage classification. To further adapt this system to the real hospital environment, the authors also intend to address the problem of locating the face regions under varying lighting conditions. To this end, an adaptive face detection technique based on gamut mapping is presented. The authors have evaluated the prototype system on recordings of a healthy newborn with different conditions, and we show that our algorithm can operate with approximately 88% accuracy.
Conference papers on the topic "RSI monitor"
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Feng, Chun-Kai, Thomas Johnson, Shau-Shiun Jan, and Dennis Akos. "Assessment of camera capture for GPS RFI monitor." In 2014 IEEE/ION Position, Location and Navigation Symposium - PLANS 2014. IEEE, 2014. http://dx.doi.org/10.1109/plans.2014.6851502.
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Harrison, Harold D., Li Cheng, Dawei Wang, and Jianhua Li. "Monitoring the Stress Free Temperature of a Complex Segment of Track." In 2012 Joint Rail Conference. American Society of Mechanical Engineers, 2012. http://dx.doi.org/10.1115/jrc2012-74039.
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A 1.25 km segment of a heavy haul coal line was instrumented with Rail Stress Monitors (RSM) [1–7] and monitored throughout a winter-summer swing in ambient conditions. The track segment included a reverse curve spanning elevated, at-grade, and tunnel conditions that transitioned to a turnout. Natural events along with track maintenance activity punctuated the seasonal shifts in Stress Free Temperature (SFT).
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Harrison, William L., and Gerard Allwein. "Semantics-Directed Prototyping of Hardware Runtime Monitors." In 2018 International Symposium on Rapid System Prototyping (RSP). IEEE, 2018. http://dx.doi.org/10.1109/rsp.2018.8631992.
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Jongsun Ahn, Kyungho Yoo, Deuk Jae Cho, Sang Hyun Park, Sangkyung Sung, Taesam Kang, and Young Jae Lee. "Development of prototype Reference Station and Integrity Monitors (RSIM) for maritime application." In 2008 International Conference on Control, Automation and Systems (ICCAS). IEEE, 2008. http://dx.doi.org/10.1109/iccas.2008.4694598.
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Zhang, Xueliang, Chunbing Shao, Ximing Tang, Cheng Yang, and Huixing Feng. "Application of RSE-M2010 on In-Service Inspection of Taishan EPR Project." In 2013 21st International Conference on Nuclear Engineering. American Society of Mechanical Engineers, 2013. http://dx.doi.org/10.1115/icone21-15842.
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The latest edition of French In-service Inspection Rules RSE-M2010, incorporating the up-to-date upstream French regulations, orders and requirements for pressure equipments, and taking into account both of the radioactive risk and industrial risk in nuclear power plant (NPP), has been adopted as the applicable rule for in-service inspection (ISI) of EPR units. In RSE-M2010, the previously used benchmark for classification Safety Class has been replaced by the Nuclear Pressure Equipments Class (ESPN Class), and the category of pressure equipments has been introduced to monitor the industry risks of NPP pressure equipments, making it much more precise and convenient to define the scope of equipments which subjected to ISI and corresponding ISI requirements on frequency and methods. This paper described the main differences of the ISI requirements in RSE-M2010 and previous edition of RSE-M, also introduced practices of applying RSE-M2010 when preparing the ISI program of Taishan EPR units. Based on the application practice of RSE-M2010 on Taishan EPR project, some proposals for future improvement of this code are presented. Preliminary thinking for future implementation of EPR ISI activities has also been described.
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Bailon-Ruiz, Rafael, Simon Lacroix, and Arthur Bit-Monnot. "Planning to Monitor Wildfires with a Fleet of UAVs." In 2018 IEEE/RSJ International Conference on Intelligent Robots and Systems (IROS). IEEE, 2018. http://dx.doi.org/10.1109/iros.2018.8593859.
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Peynot, T., and S. Lacroix. "A probabilistic framework to monitor a multi-mode outdoor robot." In 2005 IEEE/RSJ International Conference on Intelligent Robots and Systems. IEEE, 2005. http://dx.doi.org/10.1109/iros.2005.1545287.
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Fusheng Tan, Jun Yang, Jianming Huang, Tinggang Jia, Weidong Chen, and Jingchuan Wang. "A navigation system for family indoor monitor mobile robot." In 2010 IEEE/RSJ International Conference on Intelligent Robots and Systems (IROS 2010). IEEE, 2010. http://dx.doi.org/10.1109/iros.2010.5653526.
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Kitetu, Martin, and Alois Mbutura. "Regional Energy Supply Index (RESI): Using Open Source Data To Monitor Electricity Reliability Across Sub-Saharan Africa." In 2020 IEEE PES/IAS PowerAfrica. IEEE, 2020. http://dx.doi.org/10.1109/powerafrica49420.2020.9219864.
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Alicic, Raif, and Senad Smaka. "A New Approach to Determine the Optimal Number and Arrangement of Power Quality Monitors for Voltage Sag Detection." In 2019 IEEE 5th International forum on Research and Technology for Society and Industry (RTSI). IEEE, 2019. http://dx.doi.org/10.1109/rtsi.2019.8895534.
Full textReports on the topic "RSI monitor"
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McInerney, Michael K., and John M. Carlyle. : Demonstration of Acoustic Sensing Techniques for Fuel-Distribution System Condition Monitoring : Final Report on Project F07-AR07. Engineer Research and Developmenter Center (U.S.), January 2021. http://dx.doi.org/10.21079/11681/39560.
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Leaks in fuel storage tanks and distribution piping systems have been identified as a mission-critical problem by the Department of Defense and the U.S. Army. Fuel system leaks are often hard to locate and virtually inaccessible for efficient repair because the piping is often installed under a concrete pad or tarmac. Leak repair could cost up to $2,000, and the cost of cleanup and re-mediation for fuel spills can exceed $50,000. In this project an acoustic remote sensing system was installed to monitor an Army heliport refueling system to determine whether it could detect and accurately locate fuel leaks using computer software technolo-gies to distinguish acoustic leakage signatures from normal fuel system operational noise. Demonstration and validation efforts were disadvantaged by the fact that no fuel leaks occurred in the monitored system for the duration of the project. However, the monitoring system did identify several unusual acoustic events within the fueling system and interpret them as indications of intermittent malfunctions of a check valve and a fuel pump. The 30-year ROI is about 6.42. Further work is required before the technology can be fully implemented: its ability to detect fluid leaks must be proven, and the system specifications must be certified through an EPA third party.