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Letteratura scientifica selezionata sul tema "Sound – Transmission"

Autore: Grafiati

Pubblicato: 4 giugno 2021

Ultima modifica: 25 luglio 2025

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Articoli di riviste sul tema "Sound – Transmission"

1

Mansy, Hansen A., Robert A. Balk, William H. Warren, et al. "Pneumothorax effects on pulmonary acoustic transmission." Journal of Applied Physiology 119, no. 3 (2015): 250–57. http://dx.doi.org/10.1152/japplphysiol.00148.2015.

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Pneumothorax (PTX) is an abnormal accumulation of air between the lung and the chest wall. It is a relatively common and potentially life-threatening condition encountered in patients who are critically ill or have experienced trauma. Auscultatory signs of PTX include decreased breath sounds during the physical examination. The objective of this exploratory study was to investigate the changes in sound transmission in the thorax due to PTX in humans. Nineteen human subjects who underwent video-assisted thoracic surgery, during which lung collapse is a normal part of the surgery, participated i

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2

Volkomor, Vitalii. "Innovative Sound Technologies of Spatial Sound Transmission: a Retrospective of Sound Installations." Bulletin of KNUKiM. Series in Arts, no. 43 (December 22, 2020): 75–81. https://doi.org/10.31866/2410-1176.43.2020.220085.

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The purpose of the article is to determine the peculiarities of the development of the art of sound installation in the context of the concepts of acoustic space in the second half of the 20th – beginning of the 21st century. Research Methodology. The interdisciplinary methodology of critical spatial analysis and critical research in music has been applied to study the concepts of space and place, which became the basis for the practice of sound installation in the middle of the 20th century and the beginning of the 21st; systemic and evolutionary methods that have contributed to the con

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3

Fullerton, Jeffrey, and Alexander Maurer. "Horizontal impact sound transmission measurements." INTER-NOISE and NOISE-CON Congress and Conference Proceedings 264, no. 1 (2022): 900–908. http://dx.doi.org/10.3397/nc-2022-832.

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Impact sound transmission is typically considered for the floor/ceiling assembly that separates vertically stacked spaces. This is the context that ASTM E492 laboratory testing and ASTM E1007 field testing are performed. However, impact sounds often have the potential for causing significant flanking transmission through structural connections of the floor system to surrounding spaces. A common concern for possible impact sound transmission can occur with hard flooring finishes that are not isolated from the floor structure to adjacent spaces. For this condition, while it is possible to achiev

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4

Greene, Nathaniel T., Juanantonio Ruiz, Ted Argo, Andrew D. Brown, and David A. Anderson. "High level sound transmission through cadaver human ears—On the influence of bone conduction and hearing protective devices." Journal of the Acoustical Society of America 154, no. 4_supplement (2023): A351. http://dx.doi.org/10.1121/10.0023766.

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High level sound exposure can cause substantial injury to the auditory system, motivating efforts to predict and prevent this injury. Measurement techniques using acoustic manikins are effective for low and moderate sound levels, but nonlinear effects in the middle ear and alternate sound transmission pathways to the inner ear limit their utility at higher sound pressure levels. Here, we describe results from a series of measurements made in cadaveric human ears conducted in our laboratory over the last several years. We quantified sound transmission to the inner ear by measuring the differenc

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5

Abrams, R. M., S. K. Griffiths, X. Huang, J. Sain, G. Langford, and K. J. Gerhardt. "Fetal Music Perception: The Role of Sound Transmission." Music Perception 15, no. 3 (1998): 307–17. http://dx.doi.org/10.2307/40285770.

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The fetal sound environment is now known to be rich and varied. Playback of tapes made from intrauterine recordings of sounds reveals some muffling, suggesting an attenuation of high-frequency sounds at the surface of the abdominal wall and during transmission through abdominal and uterine tissues and fluids. The present experiments show how the spectral features of synthesized musical sounds are altered once they reach the ear of the fetal sheep. Below 300 Hz, intrauterine sound pressure levels are nearly identical to those recorded outside the ewe. Between 315 and 2500 Hz, the attenuation in

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6

Zhang, Ruojun, Guibo Wang, Xiaoming Zhou, and Gengkai Hu. "A decoupling-design strategy for high sound absorption in subwavelength structures with air ventilation." JASA Express Letters 2, no. 3 (2022): 033602. http://dx.doi.org/10.1121/10.0009919.

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A strategy based on the decoupling design of two elementary structures, both made of coiled-up channels, is proposed. One channeling structure is designed for blocking sound transmission, while the other element is used for absorbing sounds at low-transmission frequencies. Based on this strategy, the sound-absorbing sample with air ventilation is fabricated and its high-absorption capability is demonstrated experimentally. The expanding of sound absorption bandwidth by combining different absorptive channels into the sample structure is also demonstrated. The proposed method provides a new rou

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7

Kurosawa, Yoshio, Ji Chengyao, Tsuyoshi Yamashita, et al. "FE analysis of porous material covers for automotive parts." INTER-NOISE and NOISE-CON Congress and Conference Proceedings 268, no. 5 (2023): 3260–66. http://dx.doi.org/10.3397/in_2023_0467.

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Some automobile transmissions (AT, CVT, etc.) generate noise, and a soundproof material cover is attached to the transmission body reduce the noise by offering sound absorption and insulation. However, the sound radiating from the cover may affect the transmission of vibrations. In this study, we attached a simply shaped cover to a jig to represent a transmission body and measured the vibration acceleration and sound pressure level when the jig was vibrated. The jig and cover were modeled by FEM, and vibroacoustic analysis was performed. The material of the cover was felt or grow wool, and sou

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8

Kiyokawa, Hiroshi, and Hans Pasterkamp. "Volume-dependent variations of regional lung sound, amplitude, and phase." Journal of Applied Physiology 93, no. 3 (2002): 1030–38. http://dx.doi.org/10.1152/japplphysiol.00110.2002.

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Acoustic imaging of the respiratory system demonstrates regional changes of lung sounds that correspond to pulmonary ventilation. We investigated volume-dependent variations of lung sound phase and amplitude between two closely spaced sensors in five adults. Lung sounds were recorded at the posterior right upper, right lower, and left lower lobes during targeted breathing (1.2 ± 0.2 l/s; volume = 20–50 and 50–80% of vital capacity) and passive sound transmission (≤0.2 l/s; volumes as above). Average sound amplitudes were obtained after band-pass filtering to 75–150, 150–300, and 300–600 Hz. Cr

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9

Di, Hao, Xinpei Li, Yasuhiro Oikawa, and Shoichi Kiya. "Generative model-based transmission health monitoring of construction machinery in real factory." Journal of the Acoustical Society of America 154, no. 4_supplement (2023): A142. http://dx.doi.org/10.1121/10.0023058.

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In real factory production processes, transmission systems occasionally produce abnormal noises that deviate from their normal sound patterns. Detecting these anomalies is crucial for identifying the underlying causes and ensuring the quality of products. The traditional health monitoring of the transmission system in construction machinery relies on the expertise of skilled workers. In order to enhance detection capabilities during instances of abnormal noise occurrence, conserve human resources, and provide a technological foundation for future automation in production, we propose a transmis

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10

Ren, Juan, Qingjun Liu, Ting Chen, and Pingye Deng. "Analytic model research of sound propagation in pipe wall with sound absorption." MATEC Web of Conferences 355 (2022): 01016. http://dx.doi.org/10.1051/matecconf/202235501016.

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There are a lot of principles for sound transmission in the pipeline for whether sound transmission structure or noise reduction structure. Even in ultrasonic testing, there is a large number of principles for using pipeline sound transmission. Based on the sound propagation model and the boundary conditions of pipe wall sound absorption, the sound propagation equation for pipe wall sound absorption is given by establishing mathematical model and solving mathematical equation in this paper. When the distribution of sound field along the cross-section of the pipe (outlet) is ignored, the transm

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Tesi sul tema "Sound – Transmission"

1

Liu, Biong. "Sound transmission through aircraft panels /." Stockholm, 2005. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-494.

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2

Wilson, Robin. "Sound transmission through double walls." Thesis, Heriot-Watt University, 1992. http://hdl.handle.net/10399/1312.

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Servis, Dimitris C. "Sound transmission at pipe joints." Thesis, Heriot-Watt University, 1991. http://hdl.handle.net/10399/782.

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4

Johnson, Martin Eric. "Active control of sound transmission." Thesis, University of Southampton, 1996. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.243189.

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5

Uno, Paul John. "Transmission loss of building facades." Thesis, The University of Sydney, 1987. https://hdl.handle.net/2123/26011.

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This thesis has been written in an endeavour to review the current available literature on the transmission loss of building facades. Tests were also carried out to compare laboratory results and theory with results obtained in practice, and to get a feeling for the difficulties involved.

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Phillips, Timothy Jason Nirmal. "Sound Transmission Loss of Sandwich Panels." Thesis, University of Canterbury. Department of Mechanical Engineering, 2012. http://hdl.handle.net/10092/9210.

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The sound transmission loss characteristics of plywood based sandwich panels were investigated. Measurements were made of the sound transmission loss of a range of materials and used as a baseline for comparison while a sound transmission loss optimisation method was developed. A unique test rig was built and calibrated to determine selected mechanical properties of materials of interest. The results of sound transmission loss and material properties measurements were used to select an appropriate prediction model, which was then used in conjunction with a mathematical optimisation model to de

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Smith, R. Sean. "Sound transmission through lightweight parallel plates." Thesis, Heriot-Watt University, 1997. http://hdl.handle.net/10399/1290.

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This thesis examines the transmission of sound through lightweight parallel plates, (plasterboard double wall partitions and timber floors). Statistical energy analysis was used to assess the importance of individual transmission paths and to determine the overall performance. Several different theoretical models were developed, the choice depending on the frequency range of interest and method of attachment of the plates, whether point or line, to the structural frame. It was found that for a line connected double wall there was very good agreement between the measured and predicted results,

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8

Pavasovic, Vladimir, and vpavasovic@wmgacoustics com au. "The radiation of Sound from Surfaces at Grazing Angles of Incidence." RMIT University. Applied Sciences, 2006. http://adt.lib.rmit.edu.au/adt/public/adt-VIT20060911.115939.

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It is difficult to predict the sound radiation from large factory roofs. The existing infinite panel theories of sound insulation are not sufficient when the sound radiates at grazing angles. It has been shown that the reason for the collapse of the theory is the well known result for the radiation efficiency. This research will present a simple analytic strip theory, which agrees reasonably well with numerical calculations for a rectangular panel. Simple analytic strip theory has lead to the conclusion that it is mainly the length of the panel in the direction of radiation, rather than its

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9

Leung, Aiken Hon. "Investigation on sound transmission through pulmonary parenchyma." Thesis, Oxford Brookes University, 2000. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.327681.

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10

Cowan, Andre James. "Sound Transmission Loss of Composite Sandwich Panels." Thesis, University of Canterbury. Mechanical Engineering, 2013. http://hdl.handle.net/10092/7879.

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This thesis examines the sound transmission loss (STL) through composite sandwich panel systems commonly used in the marine industry. Experimental, predictive and optimisation methods are used to evaluate the acoustic performance of these systems and to improve their acoustic performance with noise treatment. The complex nature of the material properties of composite sandwich panels was found to be dependent not only on the physical properties but also the frequency of incident noise. Young’s modulus was found to reduce with increasing frequency as has been predicted in the literature which is

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Libri sul tema "Sound – Transmission"

1

Quirt, J. D. Controlling sound transmission into buildings. National Research Council Canada, Division of Building Research, 1985.

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2

Martin, Heiko Jan. Sound transmission rooms--a comparison. Technische Universiteit Eindhoven, 1986.

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3

Daina, Augaitis, Lander Dan 1953-, Walter Phillips Gallery, and Banff Centre for the Arts., eds. Radio rethink: Art, sound, and transmission. Walter Phillips Gallery, 1994.

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4

Center, Langley Research, ed. Model-scale sound propagation experiment. National Aeronautics and Space Administration, Langley Research Center, 1988.

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5

Center, Langley Research, ed. Model-scale sound propagation experiment. National Aeronautics and Space Administration, Langley Research Center, 1988.

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6

Center, Langley Research, ed. Model-scale sound propagation experiment. National Aeronautics and Space Administration, Langley Research Center, 1988.

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7

Center), Joint Acoustic Propagation Experiment Workshop (1993 Langley Research. Joint Acoustic Propagation Experiment (JAPE-91) Workshop: Proceedings of a workshop jointly sponsored by the National Aeronautics and Space Administration, Washington, D.C., and the University of Mississippi, Oxford, Mississippi, and held in Hampton, Virginia, April 28, 1993. National Aeronautics and Space Administration, Office of Management, Scientific and Technical Information Program, 1993.

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8

S, Bolton J., and United States. National Aeronautics and Space Administration., eds. A study of methods to predict and measure the transmission of sound through the walls of light aircraft: Semi-annual status report:reporting period 5/15/87-11/15/87. Purdue University, 1988.

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9

P, Filippi, ed. Acoustics: Basic physics, theory, and methods. Academic Press, 1999.

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P, Gardonio, ed. Sound and structural vibration: Radiation, transmission and response. 2nd ed. Elsevier/Academic, 2007.

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Capitoli di libri sul tema "Sound – Transmission"

1

Speaks, Charles E. "Sound Transmission." In Introduction to Sound. Springer US, 1992. http://dx.doi.org/10.1007/978-1-4899-7196-8_8.

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2

Mechel, Fridolin P. "Sound Transmission." In Formulas of Acoustics. Springer Berlin Heidelberg, 2004. http://dx.doi.org/10.1007/978-3-662-07296-7_8.

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3

Miles, Ronald N. "Sound Transmission Loss." In Mechanical Engineering Series. Springer International Publishing, 2019. http://dx.doi.org/10.1007/978-3-030-22676-3_3.

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4

Ando, Yoichi. "Sound Transmission Systems." In Concert Hall Acoustics. Springer Berlin Heidelberg, 1985. http://dx.doi.org/10.1007/978-3-642-69810-1_2.

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Miles, Ronald N. "Sound Transmission Loss." In Mechanical Engineering Series. Springer International Publishing, 2023. http://dx.doi.org/10.1007/978-3-031-33009-4_3.

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Coates, Rodney F. W. "Sound Transmission Fundamentals." In Underwater Acoustic Systems. Macmillan Education UK, 1990. http://dx.doi.org/10.1007/978-1-349-20508-0_1.

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7

Rindel, Jens Holger. "Flanking transmission." In Sound Insulation in Buildings. CRC Press, 2017. http://dx.doi.org/10.1201/9781351228206-12.

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8

Moravcsik, Michael J. "The Transmission and Storage of Sound." In Musical Sound. Springer US, 2002. http://dx.doi.org/10.1007/978-1-4615-0577-8_16.

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Xie, Bosun. "Storage and transmission of spatial sound signals." In Spatial Sound. CRC Press, 2022. http://dx.doi.org/10.1201/9781003081500-13.

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Nilsson, Anders, and Bilong Liu. "Sound Transmission Loss of Panels." In Vibro-Acoustics, Volume 2. Springer Berlin Heidelberg, 2015. http://dx.doi.org/10.1007/978-3-662-47934-6_13.

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Atti di convegni sul tema "Sound – Transmission"

1

GUY, RW, and A. DE MEY. "SOUND INTENSITY MEASUREMENT OF SOUND TRANSMISSION LOSS." In Reproduced Sound 1985. Institute of Acoustics, 2024. http://dx.doi.org/10.25144/22525.

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2

ROBERTS, M. "AN ACOUSTICAL MODEL FOR TRANSMISSION LINE WOOFER SYSTEMS." In Reproduced Sound 1990. Institute of Acoustics, 2024. http://dx.doi.org/10.25144/21412.

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3

DARLINGTON, P., KP ROUNGKVIST, MS NIELSEN, and GC NICHOLSON. "A LOUDSPEAKER SYSTEM WITH ACTIVE TRANSMISSION LINE LINE LOADING." In Reproduced Sound 1992. Institute of Acoustics, 2024. http://dx.doi.org/10.25144/20876.

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4

STEINBRECHER, T. "SPEECH TRANSMISSION INDEX: TOO WEAK IN TIME AND FREQUENCY?" In Reproduced Sound 2008. Institute of Acoustics, 2023. http://dx.doi.org/10.25144/17682.

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LI, FF. "THE COMPLEXITY OF SPEECH INTELLIGIBILITY MEASUREMENTS IN PACKETISED TRANSMISSION CHANNELS." In Reproduced Sound 2003. Institute of Acoustics, 2023. http://dx.doi.org/10.25144/18183.

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WISE, S. "LATENCY IN MULTICHANNEL DIGITAL AUDIO TRANSMISSION SYSTEMS AND ITS PRACTICAL EFFECTS." In Reproduced Sound 2000. Institute of Acoustics, 2024. http://dx.doi.org/10.25144/18681.

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Erofeev, Vladimir, and Dmitriy Monich. "Reduction of resonant sound transmission and inertial sound transmission through sandwich panels." In 13TH INTERNATIONAL SCIENTIFIC CONFERENCE ON AERONAUTICS, AUTOMOTIVE AND RAILWAY ENGINEERING AND TECHNOLOGIES (BulTrans-2021). AIP Publishing, 2022. http://dx.doi.org/10.1063/5.0099413.

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FLATTÉ, SM. "SOUND TRANSMISSION THROUGH A FLUCTUATING OCEAN." In Sound Propagation and Underwater Systems 1978. Institute of Acoustics, 2024. http://dx.doi.org/10.25144/23598.

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WISE, S. "AUDIO VISUAL SIGNAL TRANSMISSION OVER CAT 5 (OR BETTER) CABLING FOR TODAY AND TOMORROW." In Reproduced Sound 1999. Institute of Acoustics, 2024. http://dx.doi.org/10.25144/18837.

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Tiikoja, Heiki, Hans Rämmal, Mats Abom, and Hans Boden. "Sound Transmission in Automotive Turbochargers." In SAE 2011 Noise and Vibration Conference and Exhibition. SAE International, 2011. http://dx.doi.org/10.4271/2011-01-1525.

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Rapporti di organizzazioni sul tema "Sound – Transmission"

1

Rudder, Fred F. Airborne sound transmission loss characteristics of woodframe construction. U.S. Department of Agriculture, Forest Service, Forest Products Laboratory, 1985. http://dx.doi.org/10.2737/fpl-gtr-43.

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Carey, William M. Investigation of Complex Range-Dependent Shallow Water Sound Transmission. Defense Technical Information Center, 2008. http://dx.doi.org/10.21236/ada532974.

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3

Sun, Xin, Kevin L. Simmons, and Mohammad A. Khaleel. Characterization of Sound Transmission Loss of Laminated Glass with Analytical and Experimental Approaches. Office of Scientific and Technical Information (OSTI), 2005. http://dx.doi.org/10.2172/883220.

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4

Alexander. PR-201-144503-R01 Guidelines for Using Composite Systems to Repair High Pressure Pipelines. Pipeline Research Council International, Inc. (PRCI), 2016. http://dx.doi.org/10.55274/r0010860.

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This document, Guidelines for Using Composite Systems to Repair High Pressure Gas and Liquid Transmission Pipelines, was prepared for the Pipeline Research Council International, Inc. to provide direction for operators of high pressure transmission pipelines in using composite repair technologies. This guideline document provides technically sound and supported guidance to pipeline operators for the selection, design, and installation of composite repairs that allow the continued safe operation of the repaired pipelines. The guideline also provides essential elements for gaining regulatory acc

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Hart, Carl R., D. Keith Wilson, Chris L. Pettit, and Edward T. Nykaza. Machine-Learning of Long-Range Sound Propagation Through Simulated Atmospheric Turbulence. U.S. Army Engineer Research and Development Center, 2021. http://dx.doi.org/10.21079/11681/41182.

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Conventional numerical methods can capture the inherent variability of long-range outdoor sound propagation. However, computational memory and time requirements are high. In contrast, machine-learning models provide very fast predictions. This comes by learning from experimental observations or surrogate data. Yet, it is unknown what type of surrogate data is most suitable for machine-learning. This study used a Crank-Nicholson parabolic equation (CNPE) for generating the surrogate data. The CNPE input data were sampled by the Latin hypercube technique. Two separate datasets comprised 5000 sam

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Pettit, Chris, and D. Wilson. A physics-informed neural network for sound propagation in the atmospheric boundary layer. Engineer Research and Development Center (U.S.), 2021. http://dx.doi.org/10.21079/11681/41034.

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We describe what we believe is the first effort to develop a physics-informed neural network (PINN) to predict sound propagation through the atmospheric boundary layer. PINN is a recent innovation in the application of deep learning to simulate physics. The motivation is to combine the strengths of data-driven models and physics models, thereby producing a regularized surrogate model using less data than a purely data-driven model. In a PINN, the data-driven loss function is augmented with penalty terms for deviations from the underlying physics, e.g., a governing equation or a boundary condit

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Deryabin, I. V. Noise-absorbing panel with bypass channels. FORGING AND STAMPING PRODUCTION. MATERIAL WORKING BY PRESSURE, 2023. http://dx.doi.org/10.12731/kshpomd62023-deryabin.

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Noise, having a harmful effect on humans and the environment, forces us to search and conduct research on the development of new methods and means of noise protection. Currently, with an increasing increase in the flow of vehicles in residential areas, with the development of industrial production, the issue of noise control is becoming particularly relevant. A well-known and effective technical solution for blocking the transmission of acoustic energy is the use of noise-absorbing panels, both as part of various soundproof structures, and in the form of separate acoustic elements installed in

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Kanninen, M. F. L51718 Development and Validation of a Ductile Fracture Analysis Model. Pipeline Research Council International, Inc. (PRCI), 1994. http://dx.doi.org/10.55274/r0010321.

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In close cooperation with the Centro Sviluppo Materiali (CSM) and SNAM of Italy, with several years of support from the PRCI NG-18 committee, the Southwest Research Institute (SwRI) has developed and validated a "first principles" predictive model for ductile fracture in a gas transmission pipeline. In particular, the coordinated SwRI and CSM projects for the PRC -supplemented by work contributed by SNAM - has established a theoretically valid methodology and an accompanying line pipe material characterization procedure for gas industry use. This progress provides a theoretically sound framewo

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Vantassel, Stephen M., and Mark A. Klng. Wildlife Carcass Disposal. U.S. Department of Agriculture, Animal and Plant Health Inspection Service, 2018. http://dx.doi.org/10.32747/2018.7207733.ws.

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Many wildlife management situations require the disposal of animal carcasses. These can include the lethal removal of wildlife to resolve damage or conflicts, as well as clean-up after mortalities caused by vehicle collisions, disease, oil spills or other natural disasters. Carcasses must be disposed of properly to protect public sensitivities, the environment, and public health. Improper disposal of carcasses can result in public outrage, site contamination, injury to animals and people, and the attraction of other animals that may lead to wildlife damage issues. Concern over ground water con

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Tossey, Brett, and Ramgopal Thodla. PR-180-094506-R01 Challenges for Safe and Reliable On-Shore Pipeline Transport of Supercritical CO2. Pipeline Research Council International, Inc. (PRCI), 2010. http://dx.doi.org/10.55274/r0010712.

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Abstract (sommario):

There is interest within the pipeline industry in transporting supercritical CO2 in pipelines. A significant issue is the lack of an independent industry standard for supercritical CO2 pipelines. Existing industry standard for liquid and gas transmission are used for mechanical design requirements, but selected properties of supercritical CO2 make it a unique product. Impurities in the gas steam, materials selection, and leak detection in supercritical CO2 require special consideration. The objective of this project is to engage the supercritical CO2 industry in a workshop and use their knowle

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