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Relevant bibliographies by topics / Event-shape engineering

Academic literature on the topic 'Event-shape engineering'

Author: Grafiati

Published: 14 March 2023

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Journal articles on the topic "Event-shape engineering"

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Dobrin, A. "Event shape engineering with ALICE." Nuclear Physics A 904-905 (May 2013): 455c—458c. http://dx.doi.org/10.1016/j.nuclphysa.2013.02.047.

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Christiansen, Peter. "Event-Shape Engineering and Jet Quenching." Journal of Physics: Conference Series 736 (August 2016): 012023. http://dx.doi.org/10.1088/1742-6596/736/1/012023.

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Schukraft, Jürgen, Anthony Timmins, and Sergei A. Voloshin. "Ultra-relativistic nuclear collisions: Event shape engineering." Physics Letters B 719, no. 4-5 (February 2013): 394–98. http://dx.doi.org/10.1016/j.physletb.2013.01.045.

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Aoyama, Ryo. "Event Plane Dependence of Di-hadron Correlations with Event Shape Engineering at the STAR Experiment." Nuclear Physics A 982 (February 2019): 343–46. http://dx.doi.org/10.1016/j.nuclphysa.2018.11.013.

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Gehrmann, T., M. Jaquier, and G. Luisoni. "Hadronisation effects in event-shape moments." European Physical Journal C 67, no. 1-2 (March 27, 2010): 57–72. http://dx.doi.org/10.1140/epjc/s10052-010-1288-4.

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Wen, Fufang, Jacob Bryon, Liwen Wen, and Gang Wang. "Event-shape-engineering study of charge separation in heavy-ion collisions." Chinese Physics C 42, no. 1 (January 2018): 014001. http://dx.doi.org/10.1088/1674-1137/42/1/014001.

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Tangaro, Marco Antonio. "Identified charged hadron production in Pb-Pb collisions with event shape engineering." Journal of Physics: Conference Series 612 (May 19, 2015): 012053. http://dx.doi.org/10.1088/1742-6596/612/1/012053.

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Banerjee, Sunanda. "Event shape and determination of α s at LEP." European Physical Journal C 33, S1 (February 11, 2004): s410—s412. http://dx.doi.org/10.1140/epjcd/s2004-03-1653-0.

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Bosetti, P. C., H. Grässler, D. Lanske, R. Schulte, K. Schultze, G. T. Jones, R. W. L. Jones, et al. "Analysis of transverse momentum and event shape invN scattering." Zeitschrift für Physik C Particles and Fields 46, no. 3 (September 1990): 377–85. http://dx.doi.org/10.1007/bf01621025.

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Wang, Chun-Zheng, Wen-Ya Wu, Qi-Ye Shou, Guo-Liang Ma, Yu-Gang Ma, and Song Zhang. "Interpreting the charge-dependent flow and constraining the chiral magnetic wave with event shape engineering." Physics Letters B 820 (September 2021): 136580. http://dx.doi.org/10.1016/j.physletb.2021.136580.

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Dissertations / Theses on the topic "Event-shape engineering"

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GROSA, FABRIZIO. "Strange and non-strange D-meson production in pp, p-Pb, and Pb-Pb collisions with ALICE at the LHC." Doctoral thesis, Politecnico di Torino, 2020. http://hdl.handle.net/11583/2796753.

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Book chapters on the topic "Event-shape engineering"

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Grosa, Fabrizio. "$$\varvec{\mathrm { D^+}}$$ Event-Shape Engineering Studies in Pb–Pb Collisions at $$\varvec{\sqrt{s_\mathrm {NN}}}=5.02~\mathrm {TeV}$$." In Springer Theses, 177–208. Cham: Springer International Publishing, 2021. http://dx.doi.org/10.1007/978-3-030-71131-3_8.

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Soeiro, Diana. "The Concept of Atmospheres." In Advances in Civil and Industrial Engineering, 23–40. IGI Global, 2020. http://dx.doi.org/10.4018/978-1-7998-3856-2.ch002.

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Architects and urban planners currently face the challenge of the Fourth Industrial Revolution (4IR) that quickly permeates urban environments. In an effort to understand this event as one that goes beyond technology use and technological innovation, the authors investigate how the concept of atmosphere is key to envisioning the future of smart cities. In order to clarify the understanding of the concept, this chapter presents an original alignment of three clusters of authors (Goethe and Wittgenstein, Böhme and Schmitz, and Bratton). The goal is to demonstrate that atmospheres and urban ambiances are fundamental urban design elements. They have the ability to positively shape technology use in cities as decisive elements to promote sustainable smart cities.

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Zhirnov, Ivan, and Dean Kouprianoff. "Acoustic Diagnostic of Laser Powder Bed Fusion Processes." In Advances in Transdisciplinary Engineering. IOS Press, 2022. http://dx.doi.org/10.3233/atde220173.

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Online monitoring of Laser Powder Bed Fusion is critical to advance the technology and its applications. Many studies have shown that the acoustic signal from the laser powder bed fusion process contains a large amount of information about the process condition. In this research, we used an acoustic system for the in-situ characterization of a wide variety of different single-track geometries. The internal acoustic system includes a microphone and accelerometer. The melting mode, cross-sectional shape and dimensions of Ti6Al4V single tracks at different process parameters are presented. We have established a correlation between track geometry, internal defects and acoustic signals. The parameters are varied and tested against the acoustic frequency measurements to determine the sensitivity. We determined the patterns of signal behaviour in the event of anomalies (spatter, balling, pores, undercut). The characteristic features of the process are traced to a commercial machine. Well described dataset with correlated monitoring data and signal tracks properties obtained and can be used for building classification model and quality prediction. All this is aimed at creating a database of experimental data that will be a key for LPBF digitalization and control, allowing real-time control of the process to optimize part quality and, more importantly, help with decision-making algorithms.

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Villagrán-Villega, Luz Yazmin, Xóchitl Siordia-Vásquez, Maricela Cuéllar-Orozco, and Miguel Patiño-Ortiz. "Mechanical characterization of the L4 and L5 lumbar vertebrae." In CIERMMI Women in Science Engineering and Technology TXV, 75–85. ECORFAN, 2021. http://dx.doi.org/10.35429/h.2021.6.75.85.

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Compression fractures in the lumbar region are usually caused by excessive pressure at the level of the vertebral body. The fracture occurs when the vertebral body is crushed, causing the anterior part of the vertebral body to acquire a wedge shape. Bone tissue inside the vertebral body is crushed or compressed. Compression fractures due to trauma may be due to a fall, a strong jump, a car accident, or any other event that emphasizes the spine beyond its breaking point [1]. In a simulation of the fracture in recent studies, loads are applied to real vertebral samples (destructive tests), where both compression loads are fixed on the upper and lower faces of the vertebral body. The literature mentions tests with loads of approximately 8000N emulating a daily accident, so this research aims to obtain a precise model with the use of an optical scanner, which will allow the obtaining of points (meshing) of the piece in real time with an individual measurement of up to 16 million independent measurement points captured from 1 to 2 seconds. The measurement data is characterized by a very detailed reproduction and therefore also allows the measurement of sample components up to 38mm.

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Conference papers on the topic "Event-shape engineering"

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Guizhi, Xu, Zhang Ying, Hou Huijuan, and Yan Weili. "Event-Related Potential Studies of Attention to Shape Under Different Stimuli Tasks." In Conference Proceedings. Annual International Conference of the IEEE Engineering in Medicine and Biology Society. IEEE, 2006. http://dx.doi.org/10.1109/iembs.2006.260902.

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Rocco, G., H. Rix, J. Lebrun, S. Guetat, L. Chanquoy, O. Meste, and M. N. Magnie-Mauro. "Single-Trial Detection of Event-Related Potentials with Integral Shape Averaging: An Application to the Elusive N400." In 2021 43rd Annual International Conference of the IEEE Engineering in Medicine & Biology Society (EMBC). IEEE, 2021. http://dx.doi.org/10.1109/embc46164.2021.9630271.

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Galmarini, G., G. Mastinu, M. Gobbi, and M. Mauri. "Design of an Hydrogen Powered Electrical Race Vehicle." In ASME 2011 International Design Engineering Technical Conferences and Computers and Information in Engineering Conference. ASMEDC, 2011. http://dx.doi.org/10.1115/detc2011-48284.

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The construction of a hydrogen powered electrical race vehicle is presented in this paper. This prototype has been developed to be used in the Shell Eco-Marathon competition. The main aim of this event is to reduce the fuel consumption. According to the technical regulations, the minimum space requirement has been estimated on the basis of the driver anthropometric dimensions. A high performance aerodynamic shape has been developed by starting from an axis-symmetric body which has been optimized for reducing the aerodynamic drag while running close to the ground. CFD analysis has been performed to refine the vehicle shape and to reach the final body geometry. With the help of the FEM analysis, a complex CFRP layout of a monocoque chassis has been defined in order to maximize the body stiffness and to reduce the mass. All the subsystems have been optimized both to reduce the resistance of the vehicle and to maximize the powertrain efficiency. Lab tests have been performed to validate the CFD and FEM analysis. The result of this work is the design of a vehicle, optimized in shape, mass and efficiency, to take part at Shell Eco-Marathon competition.

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Hou, Degao, Yan Chen, Jiayao Ma, and Zhong You. "Axial Crushing of Thin-Walled Tubes With Kite-Shape Pattern." In ASME 2015 International Design Engineering Technical Conferences and Computers and Information in Engineering Conference. American Society of Mechanical Engineers, 2015. http://dx.doi.org/10.1115/detc2015-46671.

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Thin-walled tubes are widely used as energy absorption devices in automobiles, designed to protect the costly structures and people inside during an impact event through plastic deformation. They show excellent performance under axial loading in terms of weight efficiency, stroke distance and total energy absorption, but also have the disadvantage that the crushing force is not uniform during deformation process, especially with the existence of a high initial peak force. Recently, pattern design on tubular structures has received increasing attention. It has been found that, if the surface of a tube is pre-folded according to an origami pattern, the collapse mode of the tube can be altered, leading to changes in energy absorption performance. In this paper, we present a series of origami patterned tubes with a kite-shape pattern that is constructed by joining two pieces of Miura-ori. First of all, the geometry of the pattern is presented. We develop a theoretical model to predict the energy absorption associated with the axial crushing of the patterned tubes and derive a mathematical formula to calculate the mean crushing force accordingly. Secondly, a family of origami tubes with various profiles are designed, and their performances subjected to quasi-static axial crushing are numerically investigated. A parametric study is also conducted to establish the relationship between the pre-folded angle of the pattern and the initial peak force as well as the mean crushing force. Numerical results show that introducing patterns to thin-walled tubes offers three advantages in comparison with conventional tubes, i.e., a lower initial peak force, a more uniform crushing load, and a stable and repeatable collapse mode. A 36.0% increase in specific energy absorption and 67.2% reduction in initial peak force is achieved in the optimum case. The new origami patterned tubes show great promise as energy absorption devices.

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Barratt, Dylan, Harry B. Bingham, and Thomas A. A. Adcock. "Nonlinear Evolution of a Steep, Focusing Wave Group in Deep Water Simulated With OceanWave3D." In ASME 2019 38th International Conference on Ocean, Offshore and Arctic Engineering. American Society of Mechanical Engineers, 2019. http://dx.doi.org/10.1115/omae2019-95299.

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Abstract Steep, focusing waves can experience fast and local nonlinear evolution of the spectrum due to wave-wave interactions resulting in energy transfer to both higher and lower wavenumber components. The shape and kinematics of a steep wave may, thus, differ substantially from the predictions of linear theory. We have investigated the role of nonlinear interactions on group-shape for a steep, narrow-banded, directionally-spread wave group focusing in deep water using the fully-nonlinear potential flow solver, OceanWave3D. Exact second-order correction of the initial conditions has been implemented together with a novel third-order approximate correction based on a Stokes-type formulation for surface elevation combined with a scaling-argument for the third-order velocity potential. Four-phase separation reveals that the third-order scheme provides a good estimate for the third-order superharmonics. A quantitative assessment of numerical error has also been performed for the spatial and temporal discretization, including energy conservation, a reversibility check and validation against previous simulations performed with a higher-order spectral (HOS) code. The initially narrow-banded amplitude spectrum exhibits the formation of sidelobes at angles of approximately ±35° to the spectral peak during the simulated extreme wave event, occurring in approximately 10 wave periods, with a preferential energy transfer to high-wavenumber components. The directional energy transfer is attributed to resonant third-order interactions with a discussion of the engineering implications.

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Gilbertson, Eric, Franz Hover, and Bryan Freeman. "Sharp Phase Change in Shape Memory Alloy Thermal Actuators for Subsea Flow Control." In ASME 2012 31st International Conference on Ocean, Offshore and Arctic Engineering. American Society of Mechanical Engineers, 2012. http://dx.doi.org/10.1115/omae2012-83979.

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Gas-lifted oil wells are susceptible to failure through malfunction of gas lift valves (GLV). One failure mode occurs when the GLV check valve fails and product passes into the well annulus, potentially reaching the wellhead. This is a growing concern as offshore wells are drilled thousands of meters below the ocean floor in extreme temperature and pressure conditions and repair and monitoring become difficult. The authors have previously developed a thermally-actuated safety valve to prevent product backflow into the annulus in the event of check valve failure. The safety valve uses shape memory alloy (SMA) wires to translate a temperature change into a displacement and, based on commercially available SMA wire material properties, requires a 6°C temperature change to fully actuate. In some wells, however, check valve failure may result in less than 6°C temperature change. In this paper a new concept is developed to sharpen the austenitic phase change in SMA actuators. The concept has broad practical implications because it will allow thermally-activated devices, such as fluid control valves, to become much more precise, i.e., translating a small temperature change into a large displacement. The new concept uses the fact that SMA transition temperatures are stress dependent. By specifically controlling stress in the wire, the temperature difference required for austenitic transition can be decreased. This is achieved with a negative-differential spring — a spring that exerts a decreasing amount of force as it is displaced. The concept is tested experimentally by conductively and electrically heating SMA wires connected to a negative-differential spring. Results show a 2.9°C-5°C reductions, respectively, in the temperature difference required for austenitic transition.

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Shin, C. H., T. H. Chun, D. S. Oh, and W. K. In. "Evaluation of Entrance Blockage of Inner Channel in Dual-Cooled Annular Nuclear Fuel." In ASME-JSME-KSME 2011 Joint Fluids Engineering Conference. ASMEDC, 2011. http://dx.doi.org/10.1115/ajk2011-18006.

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The Korea Atomic Energy Research Institute (KAERI) has been developing a dual-cooled annular fuel for the power uprate of 20% in an optimized pressurized water reactor (PWR) in Korea, OPR1000. The dual-cooled annular fuel is configured to allow the coolant flow through the inner channel as well as the outer channel. Several thermal-hydraulic issues exist for the application of the dual-cooled annular fuel to OPR1000. One of the key issues is the hypothetical event of inner channel blockage because the inner channel is an isolated flow channel without the coolant mixing between the neighboring flow channels. The inner channel blockage could cause the Departure from Nucleate Boiling (DNB) in the inner channel that eventually results in a fuel failure. A long lower end cap for the annular fuel was invented to provide flow holes by perforating the side surface of the end cap body. The side holes in the lower end cap are expected to supply a minimum coolant in the inner channel in order to prevent the DNB occurrence in the event of partial or even complete blockage of the inner channel entrance. But due to very unusual shape of the lower end cap, it is difficult to estimate the flow resistance of the side flow holes using empirical equations available in the open literatures. Experimental and computational fluid dynamics (CFD) study were performed to investigate the bypass flow through the side holes of the end cap in the case of complete entrance blockage of the inner channel. The form loss coefficient in the side holes was also estimated by using the pressure drop along the bypass flow path.

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Wang, Xin, Arun Kr Dev, Longbin Tao, De Wang Chia, and Yali Zhang. "Slamming Force Contribution due to Plunging Breakers on Circular, Square and Diamond Cylinders." In ASME 2019 38th International Conference on Ocean, Offshore and Arctic Engineering. American Society of Mechanical Engineers, 2019. http://dx.doi.org/10.1115/omae2019-95126.

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Abstract Plunging breakers, unlike non-breaking waves, impose additional slamming load on the offshore structures. This additional slamming load is considered an extreme event and is one of the most devastating forces that an offshore structure could encounter during its operational lifecycle. Whilst there are design guidelines for offshore structures pertaining to breaking waves, however it is limited to only cylindrical shape. The amount of slamming load contribution by the plunging jet is also dependent on the cross section geometries of the offshore structures. Different geometries would give rise to different air entrainment phenomenon during wave breaking and therefore affecting the slamming load contributions. In this research, JONSWAP spectrum was used to create plunging breakers via the focusing method at Newcastle University’s Wind Wave and Current tank. The crux of this research is to investigate the wave-breaking impact load on cylindrical structures with different cross section geometries commonly used in the offshore industry.

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Kushnir, Emmanuil, Mahendra R. Patel, and Terrence M. Sheehan. "Optimization of Mission Critical Joints in Bolted Machine Tool Structures." In ASME 2000 International Mechanical Engineering Congress and Exposition. American Society of Mechanical Engineers, 2000. http://dx.doi.org/10.1115/imece2000-1268.

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Abstract In general, precision machine tools consist of a number of structural components, usually castings machined and bolted together to very tight and precise tolerances. Machine bolts are used to prevent the contact surfaces from separating or sliding relative to each other. The issues critical in the design of these precision bolted joints include tensile, compressive, and lateral stiffness, and stability of the joint under different types of load. In machine tool design, the shape and tightening force in these joints are usually evaluated based on two counteracting requirements: (1) maintain sufficient stiffness provided by the joint at the cutting (load) point, and (2) allow the joint to slip (breakaway) in the event of a machine crash; in this case, the bolted joint works as a fuse preventing damage and, thus, protect critical/expensive components in the machine and/or avoid extensive repairs. Field data from machines running production have shown that satisfaction of the two criteria, presented above, using conventional methods of bolted joint design does not always assure that the stability requirements are met. This data shows that in the range of loads that do not exceed the maximum force allowed in the machine, there might occur permanent lateral displacements in the joint. These displacements accumulate during normal operations under repeated loads and the machine looses alignment without obvious instantaneous slippage in the joint. This paper discusses an approach that gives a qualitative and numerical evaluation of the joint shape, position of the bolts, tightening force, and load that it can withstand without compromising the joint integrity while still providing an effective breakaway for the protection of critical components.

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Shaffer, James, Saeid Zare, and Omid Askari. "Modeling Discharge Spark Ignition Using Zero Dimension Thermodynamic Model and Experimental Power Measurements at Various Pressures." In ASME 2021 International Mechanical Engineering Congress and Exposition. American Society of Mechanical Engineers, 2021. http://dx.doi.org/10.1115/imece2021-73235.

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Abstract Laminar burning speed calculation at high pressures is challenging because of unstable surface conditions at large flame kernel diameters. It is therefore desired to take these measurements at small dimensions (i.e., during and immediately after the ignition discharge process) when the flame kernel is smooth and stable. Taking accurate measurements at these sizes is challenging because the kernel growth rate does not only depend on the chemical reaction but also on other phenomena such as energy discharge, as well as radiative and conductive energy losses. The effect of these events has not been adequately assessed, due to the generation of ionized gas (i.e., plasma). In order to better understand the effect of the ignition plasma in this work, spark ignition in air for 1–5 atm of pressure is studied. Understanding the ignition event and modeling its behavior is important to capture accurate combustion measurements at pressures pertinent to the advanced high-pressure engines and technologies. The relationship between the electrical energy supplied to the spark and the thermal energy dissipated within a gas mixture has been studied. This work relates the electrical discharge power to the volume of the ignition kernel measured via schlieren imagery. Voltage and current data are also captured as the input to a thermodynamic model which is used to predict the volume versus time data of the spark event. The model, which utilizes measured electrical power, thermodynamic properties of ionized air, and radiation losses in air show agreement with the experimental kernel measurements in terms of overall shape of the volume data within the measured kernel uncertainty. With these results and further experimental validation the present model is considered to represent the relationship between the electrical spark power and the measured ignition kernel volume. Future work will be done to determine inaccuracies present in the arc discharge regime as well as the effectiveness of the model in combustible media.

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