Academic literature on the topic 'Study signals'

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Journal articles on the topic "Study signals"

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Cheng, Xiu Zhi, Zhen Yu, and Guang Zhu. "Experimental Study of Mine AE Signal Based on Wavelet Analysis." Applied Mechanics and Materials 148-149 (December 2011): 1127–30. http://dx.doi.org/10.4028/www.scientific.net/amm.148-149.1127.

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Because the wavelet transform can characterize the local signals in time and frequency domain, in the coal mine’s sound signals’ process, an audio signal processing based on wavelet analysis is proposed, the audio signal P wave is isolated and determined by wavelet transform, at the same time, the earthquake source can be located. Through the research of the mine AE signal’s activity patterns, the sound monitoring technology to forecast the mine power disaster is achieved.
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Mace, Douglas, Mark Finkle, and Sara Pennak. "Daytime Photometric Requirements for Pedestrian Signals." Transportation Research Record: Journal of the Transportation Research Board 1605, no. 1 (January 1997): 41–48. http://dx.doi.org/10.3141/1605-06.

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Forty-eight senior citizens participated in a field study of the visibility of letters and symbols in pedestrian traffic signals. Subjects were asked to identify signal messages from distances of 18.3 m and 29.3 m, with signal voltage set at 100 percent, 75 percent, and 50 percent of full power. Incandescent, fiber-optic, and light-emitting diode commercially available pedestrian signals were tested, including 22.9-cm and 30.5-cm rectangular signal housings and two round red-amber-green signals with symbol masks. Each subject was asked to identify the signal’s location in the test stimuli array, to name the signal’s display configuration (Walk, Don’t Walk, walking person, or hand), and to assess the signal’s brightness on a five-point scale. Analyses also were conducted on the percentage of responses about “too bright” signals and subject uncertainty about the signal message. Testing was conducted only on bright sunny days but did not include the worst-case condition of direct sunlight on the signal face. The analysis of recognition, uncertainty, and “too bright” responses suggested that a signal intensity of 25 cd minimizes the frequency of both “too bright” and uncertain responses regardless of size, distance, or technology, or whether the message is symbol or text. The data further suggest that 22.9-cm incandescent signals provide sufficient visibility with less phantom effect than 30.5-cm signals.
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Wang, Er Lie, Hui Yan Chen, Gang Tao, and Yu Hui Hu. "Study on Data Acquisition for Heavy Off-Road Vehicle AT Testing." Applied Mechanics and Materials 155-156 (February 2012): 765–69. http://dx.doi.org/10.4028/www.scientific.net/amm.155-156.765.

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Based on the analysis of the testing automatic transmission (AT), the AT’s solenoid valve control signals conditioning circuits and revolving speed F/V converter conditioning circuits are designed, and the data acquisition system is designed based on virtual instrument. The system is composed of the PCI-6024E data acquisition card, signal conditioning circuits and computer, and the acquisition procedure is programmed in graphical language LabVIEW. Finally, the data acquisition system has been verified on vehicle test bench which loads ZF-Ecomat 6HP500 AT. Controlling signals of switching solenoid valves, duty cycle signal of proportional solenoid valve, accelerator aperture signal, oil pressure signals and speed signals are collected, it turns out that the data acquisition system has good feasibility.
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Li, Dang, Jun Lu Wang, Yong Li, Jian Hua Li, and Pin Rong Lin. "A Preliminary Study on CSAMT Anti-Jamming Transmitter System." Advanced Materials Research 962-965 (June 2014): 317–21. http://dx.doi.org/10.4028/www.scientific.net/amr.962-965.317.

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On the basis of the relevant identification theory of pseudo-random code signal, the signals of CSAMT are divided into three parts according to the frequency of the signal. The signals which are susceptible to 50Hz interference signal and its harmonic components should be set by pseudo-random code way. Others are set by single square waveform way. The Control and signal generation software of the transmitter system is built on the advanced virtual instrument platform, LabVIEW. The hardware of the transmitter system is mainly composed of host computer, data acquisition card, high-speed optocoupler, IGBT driver module and four IGBT switches. The data acquisition card generate PWM signals, the high-speed optocoupler isolates low-voltage part and high-voltage part. IGBT drive module and four IGBT switches constitute high-voltage part. Entire transmitter system is suitable for different environments and research tasks, the transmit frequency are adjustable, and the pseudo-random code signal has strong capability to suppress the interference signals. The control software on host computer is simple and clear. There is good prospect for the use.
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Blum, T., and I. Inasaki. "A Study on Acoustic Emission from the Orthogonal Cutting Process." Journal of Engineering for Industry 112, no. 3 (August 1, 1990): 203–11. http://dx.doi.org/10.1115/1.2899576.

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Comprehensive experiments have been conducted to determine the influence of cutting conditions on the generation of Acoustic Emission (AE) signals while machining S45C steel. The simultaneous observation of AE-sensor signals and tool dynamometer signals provides extensive data on the orthogonal cutting process. Theoretical relationships drawn between the energy content of the AE-signal and the plastic work of deformation in the primary and secondary cutting zone will be discussed with these data. In addition, shortcomings of the established theory will be highlighted. A relationship between the AE-signals generated and the strain rate will be estimated. The influence of flank wear on the generation of AE signals will be emphasized. Finally, the feasibility of utilizing AE in tool wear sensing will be pointed out while comparing AE-signal generation and machining force measurements for the orthogonal cutting process.
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Wang, Da Long, Zheng Bin Wu, and Jian Wang. "Study of Effects of Differential via on Signal Integrity." Advanced Materials Research 805-806 (September 2013): 1011–16. http://dx.doi.org/10.4028/www.scientific.net/amr.805-806.1011.

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If characteristic impedance along a transmission line mismatch on a printed circuit board, high-speed signal has serious signal integrity problems. When signal path of a differential pair jumps layers, mismatched impedance between differential via and differential line will affect the signal integrity. The models of a coupled transmission line and via are presented in this paper. Impedance matching of the coupled transmission line and differential via for differential signals is studied. The effects of differential via dimensions on differential signals is simulated and analyzed.
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Dou, Zheng, Weidong Song, and Wenxu Zhang. "Study on the Characteristics of LFM Signals, BC Signals and Their Mixed Modulation Signals." International Journal of Communications, Network and System Sciences 10, no. 08 (2017): 196–205. http://dx.doi.org/10.4236/ijcns.2017.108b021.

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Zhou, Hui. "Study of Combining DVB-SH Signals from Satellite and Terrestrial Repeater." International Journal of Future Computer and Communication 3, no. 4 (2014): 287–90. http://dx.doi.org/10.7763/ijfcc.2014.v3.313.

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Gao, Guang Chun, Kai Xiong, Li Na Shang, Sheng Ying Zhao, and Cui Zhang. "Study on Over-Complete Dictionaries for Sparse Representations of Signals." Applied Mechanics and Materials 157-158 (February 2012): 796–99. http://dx.doi.org/10.4028/www.scientific.net/amm.157-158.796.

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In recent years there has been a growing interest in the study of sparse representation of signals. The redundancy of over-complete dictionary can make it effectively capture the characteristics of the signals. Using an over-complete dictionary that contains prototype signal-atoms, signals are described as linear combinations of a few of these atoms. Applications that use sparse representation are many and include compression, regularization in inverse problems, Compressed Sensing (CS), and more. Recent activities in this field concentrate mainly on the study of sparse decomposition algorithm and dictionary design algorithm. In this paper, we discuss the advantages of sparse dictionaries, and present the implicit dictionaries for signal sparse presents. The overcomplete dictionaries which combined the different orthonormal transform bases can be used for the compressed sensing. Experimental results demonstrate the effectivity for sparse presents of signals.
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Mursaev, A. N., S. V. Zinkin, and D. A. Novichkov. "Theoretical study of methods of finding signals and synchronization of the earth stations of satellite communications." Informatization and communication, no. 2 (February 16, 2021): 7–14. http://dx.doi.org/10.34219/2078-8320-2021-12-2-7-14.

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When using spread-spectrum signals, the problem of searching by frequency and delay must be solved before the signal is processed. For demodulation of simple signals with AM, CHM and FM, it is fundamentally necessary to provide only a frequency search, and clock synchronization can be carried out after the first decision circuit, i.e. in the signal conversion equipment, usually placed in the interface equipment or channel-forming equipment. The paper presents a theoretical analysis of the methods of the search of signals and synchronization in earth stations - search and tracking of singaporemetro signals with an expanded range and features auto scan and auto-tracking frequency when receiving simple signals.
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Dissertations / Theses on the topic "Study signals"

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Oliver, Morris Bernard. "Audible pedestrian signals: a feasibility study." Thesis, Virginia Tech, 1989. http://hdl.handle.net/10919/44130.

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This report represents a concentrated effort that determines the feasibility of audible pedestrian signals. These signals are devices which give auditory cues to help the visually impaired cross safely at difficult intersections. Surveys were sent out to over 100 organizations, audible signal manufacturers, and cities who have knowledge of the devices, and responses were analyzed. The devices were found to be feasible but only at certain complex and confusing intersections. Twelve criteria for the installation of the devices were developed as were twelve criteria for the operation of the devices. Buzzers, constant tones, bird calls, and voice signals were examined by obtaining information from traffic engineers who had experience with each sound. It was determined that intermittent tones were the most effective for human localization. For the most widely used devices, cost data were developed for the products, installation, and maintenance. A partial listing of the U.S. and foreign cities which have the devices was compiled along with a partial listing of audible signal manufacturers. The problems the visually impaired face as well as their suggested solutions are listed. Topics for further study include the use of hand-held devices which activate sound signals at intersections and the development of tone schemes for 4-leg and multi-leg intersections which are not north south and east-west. An additional topic for future study is the development of tone schemes for traffic circles.
Master of Science
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LeDew, Christopher. "SAFETY EFFECTS OF TRAFFIC SIGNAL INSTALLATIONS ON STATE ROAD INTERSECTIONS IN NORTHEAST FLORIDA." Master's thesis, University of Central Florida, 2006. http://digital.library.ucf.edu/cdm/ref/collection/ETD/id/3446.

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The purpose of this thesis is to explore how the installations of traffic signals affect crash experience at intersections, to identify those factors which help predict crashes after a signal is installed, and to develop a crash prediction model. It is the intent of this thesis to supplement the Manual on Uniform Traffic Control Devices Signal Warrant procedure and aid the traffic engineer in the signal installation decision making process. Crash data, as well as operational and geometric factors were examined for 32 state road intersections in the northeast Florida area before and after signal installation. Signal warrant studies were used as sources for traffic volumes, geometric information and crash history, before signal installation. The Florida Department of Transportation's Crash Analysis Reporting System (CARS) was used to gather crash data for the time period after signal installation. On average, the 32 intersections experienced a 12% increase in the total number of crashes and a 26% reduction in crash rate after signals were installed. The change in the number of crashes was not significant, but the rate change was significant with 90% confidence. Angle crash frequency dropped by 60% and the angle crash rate dropped by 66%, both are significant. Left-turn crashes dropped by 8% and their rate by 16%, although neither was significant. Rear-end crashes increased by 86% and the rear-end crash rate decreased by 5%. Neither of these changes was statistically significant. When crash severity was examined, it was found that the number of injury crashes increased by 64.8% and the rate by only 0.02%. Neither change was significant. Both the number of fatal crashes and the rate decreased by 100% and were significant. Property Damage Only (PDO) crashes increased by 96%, after signalization, but this change was not significant. The PDO rate, however, decreased by 46.5% and is significant. Operational factors such as AADT, turning movement counts, and speed limits; and geometric factors such as medians, turn lanes and numbers of lanes were considered to determine their effect on crashes at signalized intersections. Smaller roads, with low AADT, fewer lanes, and a rural character were found to benefit from signalization more than busier urbanized roads, in terms of crash rate reduction. The AADT, roadway cross section, number of lanes, medians, speed limit and left turn volume were all found to be important factors influencing crash rates. This thesis recommends: 1) the use of crash prediction models to supplement the MUTCD Crash Warrant, 2) the addition of a left-turn warrant to the MUTCD signal warranting procedure, and 3) development of an intersection database containing crash data as well as operational and geometric information to aid in future research.
M.S.C.E.
Department of Civil and Environmental Engineering
Engineering and Computer Science
Civil Engineering
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Corr, Patrick H. "A study in the processing of speech signals." Thesis, Queen's University Belfast, 1987. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.356880.

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Hamad, G. E. M. M. "A study of undesired signals in microwave circuits." Thesis, University of Kent, 1989. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.235354.

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Franz, Mark L. "Local agency traffic sign retroreflectivity case study and model of observed traffic sign light intensity." Morgantown, W. Va. : [West Virginia University Libraries], 2009. http://hdl.handle.net/10450/10473.

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Thesis (M.S.)--West Virginia University, 2009.
Title from document title page. Document formatted into pages; contains viii, 85 p. : ill. (some col.), col. map. Includes abstract. Includes bibliographical references (p. 79-82).
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Malachias, Nickolaos. "Doppler shift and spread study for ionospherically propagated signals." Thesis, Monterey, Calif. : Springfield, Va. : Naval Postgraduate School ; Available from National Technical Information Service, 1994. http://handle.dtic.mil/100.2/ADA284610.

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Strange, John. "VOICE AUTHENTICATIONA STUDY OF POLYNOMIAL REPRESENTATION OF SPEECH SIGNALS." Master's thesis, University of Central Florida, 2005. http://digital.library.ucf.edu/cdm/ref/collection/ETD/id/4015.

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A subset of speech recognition is the use of speech recognition techniques for voice authentication. Voice authentication is an alternative security application to the other biometric security measures such as the use of fingerprints or iris scans. Voice authentication has advantages over the other biometric measures in that it can be utilized remotely, via a device like a telephone. However, voice authentication has disadvantages in that the authentication system typically requires a large memory and processing time than do fingerprint or iris scanning systems. Also, voice authentication research has yet to provide an authentication system as reliable as the other biometric measures. Most voice recognition systems use Hidden Markov Models (HMMs) as their basic probabilistic framework. Also, most voice recognition systems use a frame based approach to analyze the voice features. An example of research which has been shown to provide more accurate results is the use of a segment based model. The HMMs impose a requirement that each frame has conditional independence from the next. However, at a fixed frame rate, typically 10 ms., the adjacent feature vectors might span the same phonetic segment and often exhibit smooth dynamics and are highly correlated. The relationship between features of different phonetic segments is much weaker. Therefore, the segment based approach makes fewer conditional independence assumptions which are also violated to a lesser degree than for the frame based approach. Thus, the HMMs using segmental based approaches are more accurate. The speech polynomials (feature vectors) used in the segmental model have been shown to be Chebychev polynomials. Use of the properties of these polynomials has made it possible to reduce the computation time for speech recognition systems. Also, representing the spoken word waveform as a Chebychev polynomial allows for the recognition system to easily extract useful and repeatable features from the waveform allowing for a more accurate identification of the speaker. This thesis describes the segmental approach to speech recognition and addresses in detail the use of Chebychev polynomials in the representation of spoken words, specifically in the area of speaker recognition. .
M.S.
Department of Mathematics
Arts and Sciences
Mathematics
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Zhan, Xin S. M. Massachusetts Institute of Technology. "A study of seismoelectric signals in measurement while drilling." Thesis, Massachusetts Institute of Technology, 2005. http://hdl.handle.net/1721.1/35084.

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Thesis (S.M.)--Massachusetts Institute of Technology, Dept. of Earth, Atmospheric, and Planetary Sciences, 2005.
Includes bibliographical references (leaves 93-98).
An LWD acoustic wave can move the excess charge in the electric double layer along the borehole wall to generate a streaming electric field. This thesis is an experimental and theoretical investigation of the electric field induced by the multipole LWD acoustic wave. The main goal of this thesis is to understand the mechanism in the seismoelectric conversion under the LWD geometry and prove the absence of the tool mode in the LWD-acoustic-wave induced electric signals. In this experimental study, we measured the seismoelectric signals excited by an acoustic multipole source in the scaled logging-while-drilling model. We put the scaled tool in a sandstone borehole to perform LWD seismoelectric and acoustic measurements. Monopole and dipole acoustic and the induced electric signals were recorded separately under exactly the same settings. The recorded acoustic and seismoelectric signals were analyzed in both time and frequency domains using a semblance method. We found no tool mode components in the electric signals by examining both the waveforms and the time and frequency domain semblances.
(cont.) The underlying mechanism is the electric double layer (EDL) at the steel water interface is much weaker than the one at the formation water interface. Thus, in the LWD seismoelectric signal, there should be no component with an apparent velocity of tool mode. Since only formation acoustic modes have their corresponding components in the electric signal, we calculated the coherence of the two kinds of signals in the frequency domain. By applying the coherence curve to filter the acoustic signals, we can eliminate the tool modes and pick out the formation acoustic modes. In the theoretical study, we developed a Pride-theory-based model for the LWD-acoustic-wave induced electric field. The electric field strength is calculated at the electrode positions along the borehole wall, analogous to what was done in the experiment. The electric boundary conditions, which are the continuity of the electric field at the borehole wall and disappearance at the LWD tool surface, reveal the underlying mechanism in the LWD seismoelectric conversion which is also the basis of our lab experiment. The absence of the tool modes in the synthetic waveforms of the electric field coincides with what we have observed in the experimental study.
(cont.) Both the experiment and the theoretical results confirm that measuring the seismoelectric signal generated by an acoustic multipole source during the LWD process can be an effective way to eliminate the tool wave contamination on the LWD acoustic measurements. This thesis research shows that seismoelectric logging-while-drilling may be a potential new method in formation property evaluation.
by Xin Zhan.
S.M.
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Hotokezaka, Kenta. "Theoretical study of signals from binary neutron star mergers." 京都大学 (Kyoto University), 2014. http://hdl.handle.net/2433/188486.

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Adolfsson, Tobias, and Axel Dellenby. "Pre-study of optical LED units for shunting signals." Thesis, KTH, Hälsoinformatik och logistik, 2021. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-296561.

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Alstom wanted to investigate the possibility of adapting its light emitting diode (LED) technology for shunting signals in train traffic. The LED technology uses 50V, but Alstom wants to adapt it for 12V. The LED technology is energy efficient but needs to be adapted for existing signal interlocking by drawing a higher current. This meant that the possibility of reactive power compensation was investigated to obtain lower thermal dissipation in dwarf signal. The essay presents a couple of possible solutions. One of the solutions is to raise the voltage by using a booster converter to use the existing 50V LED unit. Capacitors were reviewed to be used in reactive power compensation to increase current supply. One of the solutions then became a capacitor bank. Simulations indicated that a booster converter and a capacitor bank can be used to adapt the circuit. However, some modifications must be made.
Alstom ville undersöka möjligheten att anpassa sin lysdiodsteknik för dvärgsignaler i tågtrafiken. Lysdiodstekniken använder 50V men Alstom vill anpassa den för 12V. Lysdiodtekniken är strömsnål och behöver anpassas för befintliga signalställverk genom att dra en högre ström. Detta innebar att möjligheten för reaktiv kompensering undersöktes för att få en låg värmeutvecklingen i dvärgsignalen. I uppsatsen presenteras ett par möjliga lösningar. En av lösningarna för spänningen är en step-up omvandlare för att nyttja 50Vs enheten. Det gjordes också en genomgång av kondensatorer för att nyttjas i reaktivkompensering för att öka strömförbrukningen. En av lösningarna blev då ett kondensatorbatteri. Det kunde konstateras med matematisk simulering att step-up omvandlare och ett kondensatorbatteri kan användas för att anpassa kretsen dock måste vissa modifieringar utföras.
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Books on the topic "Study signals"

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Clearman, Brian. A first study in transportation markings, the U.S. 2nd ed. Saint Benedict, Or: Mount Angel Abbey, 1992.

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Hartle, Allyson J. Minnesota rail-highway grade crossing safety improvement study. Saint Paul, Minn. (395 John Ireland Blvd., St. Paul 55155): Minnesota Dept. of Transportation, Office of the Commissioner, 1992.

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Stevenson, David. The information contenet of dividends and the corroboration effect of earnings and divided signals: A UK study. (s.l: The Author), 2001.

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Puckett, Jay Alan. Study of the effects of wind power and vortex-induced vibrations to establish fatigue design criteria for high-mast poles. Fargo, N.D.]: Mountain-Plains Consortium, 2011.

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Dawar, Niraj. Cultural universals in marketing: A study of consumers' use of brand name, price, physical appearance, and retailer reputation as signals of product quality. Fontainebleau: INSEAD, 1992.

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Manfredi, Claudia, ed. Models and analysis of vocal emissions for biomedical applications: 5th International Workshop: December 13-15, 2007, Firenze, Italy. Florence: Firenze University Press, 2007. http://dx.doi.org/10.36253/978-88-5518-027-6.

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The MAVEBA Workshop proceedings, held on a biannual basis, collect the scientific papers presented both as oral and poster contributions, during the conference. The main subjects are: development of theoretical and mechanical models as an aid to the study of main phonatory dysfunctions, as well as the biomedical engineering methods for the analysis of voice signals and images, as a support to clinical diagnosis and classification of vocal pathologies. The Workshop has the sponsorship of: Ente Cassa Risparmio di Firenze, COST Action 2103, Biomedical Signal Processing and Control Journal (Elsevier Eds.), IEEE Biomedical Engineering Soc. Special Issues of International Journals have been, and will be, published, collecting selected papers from the conference.
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Biomedical signal analysis: A case-study approach. New York, NY: Wiley-Interscience, 2002.

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Rangayyan, Rangaraj M. Biomedical signal analysis: A case-study approach. [Piscataway, NJ]: IEEE Press, 2002.

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Manfredi, Claudia, ed. Models and Analysis of Vocal Emissions for Biomedical Applications. Florence: Firenze University Press, 2013. http://dx.doi.org/10.36253/978-88-6655-470-7.

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The MAVEBA Workshop proceedings, held on a biannual basis, collect the scientific papers presented both as oral and poster contributions, during the conference. The main subjects are: development of theoretical and mechanical models as an aid to the study of main phonatory dysfunctions, as well as the biomedical engineering methods for the analysis of voice signals and images, as a support to clinical diagnosis and classification of vocal pathologies.
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Manfredi, Claudia, ed. Models and Analysis of Vocal Emissions for Biomedical Applications. Florence: Firenze University Press, 2009. http://dx.doi.org/10.36253/978-88-6453-096-3.

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The MAVEBA Workshop proceedings, held on a biannual basis, collect the scientific papers presented both as oral and poster contributions, during the conference. The main subjects are: development of theoretical and mechanical models as an aid to the study of main phonatory dysfunctions, as well as the biomedical engineering methods for the analysis of voice signals and images, as a support to clinical diagnosis and classification of vocal pathologies.
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Book chapters on the topic "Study signals"

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Jindal, Shilpa, and Neena Gupta. "OCDMA: Study and Future Aspects." In Signals and Communication Technology, 125–67. New Delhi: Springer India, 2014. http://dx.doi.org/10.1007/978-81-322-2129-6_8.

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Martinho, Kátia Silva, Vanessa Del Bianco de Bento, Grazieila Ulbricht Benvenga, Viviane Aparecida Marcondes, and Leoni Villano Bonamin. "Hepatic Cell Growth Models for the Study of Ultra High Dilutions." In Signals and Images, 83–96. Dordrecht: Springer Netherlands, 2008. http://dx.doi.org/10.1007/978-1-4020-8535-2_6.

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Guilford, Tim. "Studying Warning Signals in the Laboratory." In Ethoexperimental Approaches to the Study of Behavior, 87–103. Dordrecht: Springer Netherlands, 1989. http://dx.doi.org/10.1007/978-94-009-2403-1_5.

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Ramón, Fidel, Jesús Hernández-Falcón, and Theodore H. Bullock. "Brain Electrical Signals in Unrestrained Crayfish." In Modern Approaches to the Study of Crustacea, 7–13. Boston, MA: Springer US, 2002. http://dx.doi.org/10.1007/978-1-4615-0761-1_2.

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Hakkert, A. S., D. Mahalel, and S. A. Asante. "A Comparative Study of Roundabout Capacity Procedures." In Intersections without Traffic Signals II, 93–106. Berlin, Heidelberg: Springer Berlin Heidelberg, 1991. http://dx.doi.org/10.1007/978-3-642-84537-6_8.

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Said, Siwar Ben Hadj, Karine Guillouard, and Jean-Marie Bonnin. "A Comparative Study on Security Implementation in EPS/LTE and WLAN/802.11." In Signals and Communication Technology, 457–89. Berlin, Heidelberg: Springer Berlin Heidelberg, 2013. http://dx.doi.org/10.1007/978-3-642-36169-2_14.

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Stoddart, D. Michael, A. J. Bradley, and K. L. Hynes. "Olfactory Biology of the Marsupial Sugar Glider — A Preliminary Study." In Chemical Signals in Vertebrates 6, 523–28. Boston, MA: Springer US, 1992. http://dx.doi.org/10.1007/978-1-4757-9655-1_80.

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Harris, Rachel L., Elissa Z. Cameron, and Stewart C. Nicol. "A Field Study of Wild Echidna Responses to Conspecific Odour." In Chemical Signals in Vertebrates 14, 71–80. Cham: Springer International Publishing, 2019. http://dx.doi.org/10.1007/978-3-030-17616-7_6.

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Planutis, Kestutis, Marina Planutiene, and Randall F. Holcombe. "Coculture Methodologies for the Study of Wnt Signals." In Methods in Molecular Biology, 255–61. Totowa, NJ: Humana Press, 2008. http://dx.doi.org/10.1007/978-1-59745-249-6_20.

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Khan, Salman Mohd, Mohd Parvez, Siddharth Bhardwaj, and Abid Ali Khan. "Comparative Study of ANN Algorithms for EMG Signals." In Design Science and Innovation, 637–43. Singapore: Springer Singapore, 2021. http://dx.doi.org/10.1007/978-981-15-9054-2_74.

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Conference papers on the topic "Study signals"

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Fei, Hongzi, Long Liu, Xuemin Li, and Xiuzhen Ma. "Study on Feature Extraction Method for Diesel Engine Valve Faults." In ASME 2016 Internal Combustion Engine Division Fall Technical Conference. American Society of Mechanical Engineers, 2016. http://dx.doi.org/10.1115/icef2016-9344.

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Valve faults diagnosis technique of a diesel engine is studied deeply in this paper. The experiment of valve clearance and air leakage faults are done in a diesel engine, and cylinder head vibration and transient speed signals are measured synchronously on normal and fault conditions respectively. These signals are used to feature extraction. In order to avoid the leakage and aliasing of vibration signal’s frequent spectrum, resample method based on order tracking is proposed, and vibration signal was transformed from time domain to crank angle domain accurately. Considering the non-stationary characteristic of vibration signal, a series of intrinsic mode functions with different scales were obtained using the empirical mode decomposition method, and fault features parameters were extracted through 3D Hilbert spectrums of the intrinsic mode functions. Experimental results show that the method can effectively extract fault features of diesel engine and use them to realize the valve system faults diagnosis further.
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Oner, Poyraz Alper, Serkan Gurkan, Ayhan Istanbullu, and Seydi Dogan. "Digital signal processing and classification study for electrooculogram signals." In 2015 Medical Technologies National Conference (TIPTEKNO). IEEE, 2015. http://dx.doi.org/10.1109/tiptekno.2015.7374538.

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Demortier, Luc. "Dealing with Data: Signals, Backgrounds, and Statistics." In Proceedings of the 2008 Theoretical Advanced Study Institute in Elementary Particle Physics. WORLD SCIENTIFIC, 2010. http://dx.doi.org/10.1142/9789812838360_0007.

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Thews, R. L. "Nonlinear Behavior of Quarkonium Formation and Deconfinement Signals." In NEW STATES OF MATTER IN HADRONIC INTERACTIONS:Pan American Advanced Study Institute. AIP, 2002. http://dx.doi.org/10.1063/1.1513696.

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Wang, Likun, Dongjie Tan, Yongjun Cai, SongGuang Fu, Jian Li, and Shijiu Jin. "Study on Method of Recognizing Characteristics of Pipeline Leakage Acoustic Signals." In 2006 International Pipeline Conference. ASMEDC, 2006. http://dx.doi.org/10.1115/ipc2006-10262.

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Wavelet package and neural network are used to recognize the characteristics of pipeline leakage acoustic signals. Acoustic signals produced by pressure variation of pipelines can be detected by the acoustic sensors installed on the pipelines. The detecting accuracy can be increased with recognizing the acoustic signals correctly. The method to detect acoustic signals by combining the wavelet package and neural network is introduced in this paper. The signal is decomposed with wavelet package firstly, then the decomposed coefficients in each frequency band are obtained through reconstruction. As a result, the parameters of the new sequences reconstructed on every decomposed node are acquired, and then these parameters are input to BP neural network to recognize the fault reason intelligently. At the end of the paper, field experiment data and their analyzed results are studied. The experimental results are provided to show that the proposed method can increase the accuracy efficiently.
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Castiglioni, Paolo, Andrea Faini, Gianfranco Parati, and Carolina Lombardi. "Fractal analysis of cardiorespiratory signals for sleep stage classification." In 2014 8th Conference of the European Study Group on Cardiovascular Oscillations (ESGCO). IEEE, 2014. http://dx.doi.org/10.1109/esgco.2014.6847530.

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Loveless, Steven, Zhihong You, Tathagata Chatterjee, and Badarish Subbannavar. "Failure Analysis Case Study of Inductively Coupled Cross-Chip Signals." In ISTFA 2016. ASM International, 2016. http://dx.doi.org/10.31399/asm.cp.istfa2016p0223.

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Abstract This paper discusses a failure analysis case study in a highly integrated mixed signal device caused by inductive coupling of on-chip signals. The techniques utilized and the approach to root cause analysis are discussed in depth. The interactions between the device design and failure mechanism are identified in detail. Focus is placed on drawing conclusions from the sum of individual data points, and the discussion provides an analytical path by which similar failures can be isolated and specific device sensitivities can be identified.
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Li, Wei, Guang Dai, Yali Wang, and Feifei Long. "Study of Tank Acoustic Emission Testing Signals Analysis Method Based on Wavelet Neural Network." In ASME 2011 Pressure Vessels and Piping Conference. ASMEDC, 2011. http://dx.doi.org/10.1115/pvp2011-57342.

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Acoustic emission technology is mostly used in corrosion detection of the atmospheric vertical storage tank bottom, but the evaluation results are always affected by the complex sound sources. In this paper, wavelet neural network is used to identify the acoustic emission signals from different types of tanks. Using wavelet transform and threshold denoising to denoise the detection signals, after wavelet packet decomposition, each node’s energy distribution and the feature vectors of extracted corrosion signals of the tank floor are selected as the input. At last, the compact-type wavelet neural network is chosen to recognize different AE signals. The result of magnetic flux leakage test proves that this method can improve acoustic emission signal analysis precision and achieve the accurate corrosion evaluation based on AE technology.
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Reljin, Irini S., Ana M. Gavrovska, and Milorad P. Paskas. "Review of some new methods for analyzing vital heart signals." In 2014 8th Conference of the European Study Group on Cardiovascular Oscillations (ESGCO). IEEE, 2014. http://dx.doi.org/10.1109/esgco.2014.6847512.

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Aciu, Lia Elena, Petre Ogrutan, Mihai Scutaru, and Adrian Mailat. "Study of high frequency signals behavior." In 2010 12th International Conference on Optimization of Electrical and Electronic Equipment (OPTIM). IEEE, 2010. http://dx.doi.org/10.1109/optim.2010.5510553.

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Reports on the topic "Study signals"

1

Tesny, Neal, and Andrea K. Mark. Feasibility Study on Producing Chaotic Signals. Fort Belvoir, VA: Defense Technical Information Center, August 1995. http://dx.doi.org/10.21236/ada297807.

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Wakita, Toshihiro, Koji Ozawa, Chiyomi Miyajima, Kei Igarashi, Katsunobu Ito, Kazuya Takeda, and Fumitada Itakura. Study on Driver Identification Method Using Driving Behavior Signals. Warrendale, PA: SAE International, September 2005. http://dx.doi.org/10.4271/2005-08-0569.

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Hristov, Tihomir. Study of EM Signals Propagation Through Marine Atmospheric Boundary Layer. Fort Belvoir, VA: Defense Technical Information Center, September 2002. http://dx.doi.org/10.21236/ada627368.

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Debever, Claire. Study of How Environmental Fluctuations Influence the Coherence of Acoustic Signals. Fort Belvoir, VA: Defense Technical Information Center, March 2009. http://dx.doi.org/10.21236/ada496165.

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Essex, Jonathan, and Catalina Gallego Lopez. Rapid desk-based study: Understanding the relative strength of climate signals compared to other expected development results. Evidence on Demand, November 2014. http://dx.doi.org/10.12774/eod_hd.july2014.essexjetal.

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Richards, Paul G., Won-Young Kim, Mike Hagerty, Vitaly Khalturin, and Tatyana G. Rautian. Integrated Study of Seismic and Infrasonic Signals From Sources in Southern Siberia, Eastern Kazakhstan and Western China. Fort Belvoir, VA: Defense Technical Information Center, October 2004. http://dx.doi.org/10.21236/ada427771.

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Hristov, Tihomir. Study of EM Signals Propagation through Marine Atmospheric Boundary Layer and Static Pressure Measurements in Marine Atmospheric Boundary Layer During CBLAST. Fort Belvoir, VA: Defense Technical Information Center, September 2003. http://dx.doi.org/10.21236/ada630187.

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Smith, Jijo K., Howell Li, and Darcy M. Bullock. Populating SAE J2735 Message Confidence Values for Traffic Signal Transitions Along a Signalized Corridor. Purdue University, 2019. http://dx.doi.org/10.5703/1288284317322.

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The communication between connected vehicles and traffic signal controllers is defined in SAE Surface Vehicle Standard J2735. SAE J2735 defines traffic signal status messages and a series of 16 confidence levels for traffic signal transitions. This paper discusses a statistical method for tabulating traffic signal data by phase and time of day and populating the SAE J2735 messages. Graphical representation of the red-green and green-yellow transitions are presented from six intersections along a 4-mile corridor for five different time of day timing plans. The case study provided illustrates the importance of characterizing the stochastic variation of traffic signals to understand locations, phases, and time of day when traffic indications operate with high predictability, and periods when there are large variations in traffic signal change times. Specific cases, such as low vehicle demand and occasional actuation of pedestrian phases are highlighted as situations that may reduce the predictability of traffic signal change intervals. The results from this study also opens up discussion among transportation professionals on the importance of consistent tabulation of confidence values for both beginning and end of green signal states. We believe this paper will initiate dialog on how to consistently tabulate important data elements transmitted in SAE J2735 and perhaps refine those definitions. The paper concludes by highlighting the importance of traffic engineers and connected vehicle developers to work together to develop shared visions on traffic signal change characteristics so that the in-vehicle use cases and human-machine interface (HMI) meet user expectations.
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Bell, Jack, Rik Law, Howell Li, Ben Anderson, and Darcy M. Bullock. New Opportunities for Automated Pedestrian Performance Measures. Purdue University, 2021. http://dx.doi.org/10.5703/1288284317351.

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Pedestrian safety is an important concern when evaluating intersections. Previous literature has shown that exclusive pedestrian phases improve safety, but at the expense of imposing greater pedestrian and motorist delay. However, outside of crash data, there are no easily implementable performance measures for pedestrians at traffic signals. This study proposes two performance metrics: (1) a time-to-jaywalk measure, and (2) the Conflict Occupancy Ratio (COR) for evaluating concurrent pedestrian signal phasing with turning vehicles. The COR quantifies conflicts between turning vehicles and pedestrians in the crosswalk. The COR is based upon a commercially deployed video detection system that correctly identified the presence of pedestrians to within two per cycle in this study. This performance is likely sufficient for the current application, but as the technology matures it will provide a scalable screening tool to identify intersections that have opportunities for capacity adjustments or warrant further direct field investigation.
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Whattam, J. W. 300 Area signal cable study. Office of Scientific and Technical Information (OSTI), September 1994. http://dx.doi.org/10.2172/10185186.

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