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Letteratura scientifica selezionata sul tema "Accelerationer"

Autore: Grafiati

Pubblicato: 4 giugno 2021

Ultima modifica: 13 febbraio 2022

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Articoli di riviste sul tema "Accelerationer"

Loveikin, Viacheslav, Konstantyn Pochka, Nikolay Pristaylo, and Olga Pochka. "Substantiation of Boundary Accelerations of Roller Forming Unit Optimal Reversal Mode According to Fourth-Order Acceleration." Journal of Mechanical Engineering 22, no. 1 (2019): 38–52. http://dx.doi.org/10.15407/pmach2019.01.038.

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FEOLI, ANTONIO. "MAXIMAL ACCELERATION OR MAXIMAL ACCELERATIONS?" International Journal of Modern Physics D 12, no. 02 (2003): 271–79. http://dx.doi.org/10.1142/s0218271803002706.

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Long, Gary. "Acceleration Characteristics of Starting Vehicles." Transportation Research Record: Journal of the Transportation Research Board 1737, no. 1 (2000): 58–70. http://dx.doi.org/10.3141/1737-08.

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Acceleration characteristics of starting vehicles are needed for many transportation analysis and design purposes involving driveways, turning bays, intersecting streets, traffic signals, railroad crossings, simulation software, and so forth. Constant acceleration is sometimes assumed, or AASHTO Green Book values based on piecewise-constant accelerations are sometimes adopted. However, continuing research has shown that linearly decreasing acceleration rates better represent both maximum vehicle acceleration capabilities and actual motorist behavior. It is not acceleration that usually is cons

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JEON, HYEONG-MIN, JI-WON KIM, YURI KWON, JAE-HOON HEO, EUI-BUM CHOI, and GWANG-MOON EOM. "UPPER BODY ACCELERATIONS DURING LOCOMOTION IN DIFFERENT AGE GROUPS AND GENDERS." Journal of Mechanics in Medicine and Biology 17, no. 07 (2017): 1740026. http://dx.doi.org/10.1142/s0219519417400267.

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Aim: The purpose of this study is to measure the acceleration of upper body (pelvis, shoulder and head) during walking and to investigate whether the acceleration patterns differ among age groups and genders. Methods: Twenty-nine old subjects and thirty young subjects participated in this study. Tri-axial accelerations were measured on the back of upper body (head, shoulder and pelvis). Subjects performed two trials of walking on a treadmill in their own comfortable speeds. Three-way ANOVA (repeated measures) was carried out for the root mean square of each directional acceleration with age, g

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Ma, Kemao, and Xiaoyu Zhang. "A Novel Guidance Law with Line-of-Sight Acceleration Feedback for Missiles against Maneuvering Targets." Mathematical Problems in Engineering 2014 (2014): 1–8. http://dx.doi.org/10.1155/2014/983751.

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Terminal guidance law design and its implementation are considered for homing missiles against maneuvering targets. The lateral acceleration dynamics are taken into account in the design. In the guidance law design, the line-of-sight acceleration signals are incorporated into the acceleration reference signals to compensate for the targets’ maneuvers. Then the commanded accelerations are designed and the convergent tracking of the lateral accelerations to these signals is proven theoretically. In the guidance implementation, a linear high-gain differentiator is used to estimate the line-of-sig

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Liu, Zhi Xin, Yue Zhang, and Ming Jiang Wei. "Prediction on Vehicle Crash Acceleration Based on Circle of Constant Acceleration Method." Applied Mechanics and Materials 380-384 (August 2013): 51–54. http://dx.doi.org/10.4028/www.scientific.net/amm.380-384.51.

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Vehicle crash acceleration was essential for automotive passive safety analysis. Especially in CAE analysis and sled test, B-pillar lower accelerations are considered as vehicle acceleration and often used as crash pulse to reproduce the real crash conditions. But for frontal offset impact, the magnitudes and directions of the B-pillars lower accelerations were significantly different,which made the selection of vehicle acceleration very complicate. In this paper,a prediction algorithm based on Circle of Constant Acceleration method that can calculate the acceleration of any point on vehicle w

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Lajunen, Timo, Juha Karola, and Heikki Summala. "Speed and Acceleration as Measures of Driving Style in Young Male Drivers." Perceptual and Motor Skills 85, no. 1 (1997): 3–16. http://dx.doi.org/10.2466/pms.1997.85.1.3.

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This study investigated different measures of speed and acceleration as indicators of safe driving style. 58 young males drove a 7.1-km test route twice in an instrumented car. Drivers were instructed to drive as they usually do. Driving style was measured by both site-specific measures (speed on a crest and speed and lateral acceleration in a sharp and a gentle curve) and general measures (maximum speed and lateral and longitudinal accelerations over the route). Analysis of variance (accident involvement × mileage) showed that drivers who had had prior accidents drove at higher speed and high

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Wilson, T. A., and S. Liu. "Effect of acceleration on the chest wall." Journal of Applied Physiology 76, no. 3 (1994): 1242–46. http://dx.doi.org/10.1152/jappl.1994.76.3.1242.

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The gravitational force on the rib cage has been found to be an expiratory force of approximately 8 cmH2O. The gravitational force on the abdomen is an inspiratory force of the same magnitude. Because the compliance of the rib cage is greater than the compliance of the abdomen, it follows that gravity has a net expiratory effect on lung volume and that upward accelerations augmenting the gravitational force would have an additional expiratory effect. This conclusion is contrary to observations that functional residual capacity increases during headward accelerations in centrifuges and during i

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Boroushak, Neda, Hasan Khoshnoodi, and Mostafa Rostami. "Investigation of the Head’s Dynamic Response to Boxing Punch Using Computer Simulation." Montenegrin Journal of Sports Science and Medicine 10, no. 1 (2021): 31–35. http://dx.doi.org/10.26773/mjssm.210305.

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Head injuries are dangerous injuries that are common in combat sports. Nevertheless, the mechanisms of concussion in sport have are not precisely known. Thus, this study aimed to investigate the dynamic response of the head based on linear and rotational accelerations in boxing using computer simulation. The ADAMS software model was used to determine the linear and rotational acceleration of boxing’s straight punch. The peak linear acceleration, average linear acceleration, peak rotational acceleration, and average rotational acceleration resulted from the straight punch to head were obtained:

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Nedergaard, Niels J., Mark A. Robinson, Elena Eusterwiemann, Barry Drust, Paulo J. Lisboa, and Jos Vanrenterghem. "The Relationship Between Whole-Body External Loading and Body-Worn Accelerometry During Team-Sport Movements." International Journal of Sports Physiology and Performance 12, no. 1 (2017): 18–26. http://dx.doi.org/10.1123/ijspp.2015-0712.

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Purpose:To investigate the relationship between whole-body accelerations and body-worn accelerometry during team-sport movements.Methods:Twenty male team-sport players performed forward running and anticipated 45° and 90° side-cuts at approach speeds of 2, 3, 4, and 5 m/s. Whole-body center-of-mass (CoM) accelerations were determined from ground-reaction forces collected from 1 foot–ground contact, and segmental accelerations were measured from a commercial GPS accelerometer unit on the upper trunk. Three higher-specification accelerometers were also positioned on the GPS unit, the dorsal aspe

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Tesi sul tema "Accelerationer"

Shoaibi, Martin. "Jämförelse av vertikala accelerationer av järnvägsbroar för höghastighetståg." Thesis, Umeå universitet, Institutionen för tillämpad fysik och elektronik, 2014. http://urn.kb.se/resolve?urn=urn:nbn:se:umu:diva-93949.

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Under de senaste decennierna parallellt med klimatdiskussionen har det vuxit fram ett stort intresse för höghastighetståg och en förbättrad infrastruktur i Sverige. I delar av Europa men speciellt i Kina och Japan har utvecklingen av höghastighetståg fått ett enormt lyft. Ett problem vid höjda tåghastigheter är att broarna vid en kombination av låg massa och låg egenfrekvens riskerar att orsaka resonans och höga accelerationsnivåer vid passage. Ballastspår är namnet för det traditionella järnvägsspåret i Sverige. Ballastfria spår är motsatsen till ballastspår. Andra namn för ballastfria spår ä

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Loman, Peter, and Peter Lindholm. "En fordonsförares upplevelse av accelerationer som grund för en effektiv simuleringsmodell." Thesis, Linköping University, Department of Mechanical Engineering, 2006. http://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-6121.

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Saab Aerosystems has a long tradition and a lot of competence in the field of flight simulation. Their ambition to broaden the market horizon has led to a discussion about also selling vehicle simulation solutions, both for military and civilian use.The aim of this thesis is to investigate the driver’s experiences of the accelerations he or she is exposed to whilst driving in rough terrain. The results may be used as a basis for future decisions and can act as a platform for the construction of an effective simulation model.To investigate the driver’s exposure of acceleration,

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Hörnberg, Jonathan. "Slagens påverkan på accelerationer hos huvudet vid lågintensiv sparring hos tävlande ungdomsboxare." Thesis, Högskolan Dalarna, Idrotts- och hälsovetenskap, 2020. http://urn.kb.se/resolve?urn=urn:nbn:se:du-36498.

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SyfteSyftet med studien är att undersöka translationella accelerationer och rotationsaccelerationer hos huvudet vid lätt sparring hos manliga ungdomsboxare samt hur dessa påverkas av slagens acceleration, hastighet, slagteknik, träffområde och blockerande guard.MetodUrvalet baserades på fyra manliga ungdomsboxare tillhörande viktklass -60 kg och -77 kg. Tandskyddssensorer (Hybrid Mouthguard, Prevent Biometrics, USA) och handledsaccelerometrar (Corner Wearables Ltd. U.K.) användes för att mäta accelerationer i huvudet respektive slaghastighet och slagacceleration. Testupplägget bestod av 15 min

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Blom, Henrik, and Johan Thored. "STABILA HÖGHUS I TRÄ : En analys av infästningars inverkan på accelerationer och utböjningar i ett 15-våningshus av trä." Thesis, Uppsala universitet, Byggteknik, 2016. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-296929.

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In today’s society cities grow increasingly larger, not only on the ground but vertically as well. Utilizing height means taller buildings, which often are large steel- and concrete constructions. Why not construct tall buildings out of timber instead, a material by many believed to be far better from an environmental perspective than steel and concrete? The answer lies in the lack of knowledge regarding tall timber constructions and the stresses they need to withstand. The report was conducted at the construction consulting company Bjerking AB, Uppsala. The focus in this report was to examine

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Kylén, Joakim. "2D-model of a portal frame railway bridge for dynamic analysis." Thesis, KTH, Bro- och stålbyggnad, 2010. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-37025.

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Morrison, John T. "Selective Deuteron Acceleration using Target Normal Sheath Acceleration." The Ohio State University, 2013. http://rave.ohiolink.edu/etdc/view?acc_num=osu1365523293.

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Laidler, Christopher. "GPU acceleration of the frequency domain acceleration search for binary pulsars." Doctoral thesis, Faculty of Science, 2021. http://hdl.handle.net/11427/33752.

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Graphics processing units (GPUs) have been used to accelerate computation in a broad range of fields; this work presents a GPU-accelerated search for pulsars. Pulsars are highly magnetised neutron stars with extremely stable rotational periods. These periods can be accurately measured, which makes them exceptionally powerful reference tools in the field of astrophysics. Pulsars have very weak emissions, making them difficult to find. Most pulsars are found in large-scale surveys, which generate a large amount of data, and require extensive data processing. This work describes a GPU-based solut

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Charalambous, Georgios. "TEACHERS IN THE ERA OF ACCELERATION : How the acceleration of ICT developments influences the ICT use by teachers at school." Thesis, Linköpings universitet, Pedagogik och vuxnas lärande, 2015. http://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-130804.

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In the effort to examine the factors that impact the use of ICT by teachers, research has up until now neglected the acceleration of ICT developments as a factor that affects the successful integration of ICT in education. The technological acceleration in general has triggered significant changes at the social level, such as the acceleration of social change and the acceleration of the pace of life. This is why the study of the acceleration of ICT provides for a good theoretical framework to study the teachers and their interaction with ICT in a broader context, one that engages the environme

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Williams, Justin A. "Analytical and Experimental Investigation of Time-Variant Acceleration Fields." Wright State University / OhioLINK, 2019. http://rave.ohiolink.edu/etdc/view?acc_num=wright1567258549794284.

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Roskell, Melanie. "Head acceleration during balance." Thesis, University of British Columbia, 2008. http://hdl.handle.net/2429/5750.

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The overall purpose of this thesis was to study the angular and linear accelerations that occur at the head during quiet standing in healthy humans. To date, there were few descriptions of linear head accelerations in quiet standing, and no focus on angular head accelerations. The contribution of the vestibular system to standing balance can be better understood from recognizing these, the stimuli that the system experiences during the task. Head accelerations were measured under four manipulations of sensory condition, and RMS and median frequency values were reported for linear and angular h

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Libri sul tema "Accelerationer"

Acceleration. Wendy Lamb Books, 2003.

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Acceleration. Hodder Children's, 2004.

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Acceleration. Hodder Children's, 2013.

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Hausmann, Ricardo. Growth accelerations. National Bureau of Economic Research, 2004.

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Roberts, Peter W., and Saurabh A. Lall. Observing Acceleration. Springer International Publishing, 2019. http://dx.doi.org/10.1007/978-3-030-00042-4.

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MacLean, Glynne. Extreme acceleration. Rigby, 2013.

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Somervill, Barbara A. Speed and acceleration. Heinemann Library, 2011.

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Somervill, Barbara A. Speed and acceleration. Heinemann Library, 2010.

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Speed and acceleration. Heinemann Library, 2011.

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Spilsbury, Richard. Speed and acceleration. Heinemann Library, 2007.

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Capitoli di libri sul tema "Accelerationer"

Roberts, Peter W., and Saurabh A. Lall. "Where’s the Equity for Women Entrepreneurs?" In Observing Acceleration. Springer International Publishing, 2018. http://dx.doi.org/10.1007/978-3-030-00042-4_10.

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Roberts, Peter W., and Saurabh A. Lall. "Accelerating Learning About Accelerators." In Observing Acceleration. Springer International Publishing, 2018. http://dx.doi.org/10.1007/978-3-030-00042-4_11.

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Roberts, Peter W., and Saurabh A. Lall. "Entrepreneurs, Ecosystems, and Accelerators." In Observing Acceleration. Springer International Publishing, 2018. http://dx.doi.org/10.1007/978-3-030-00042-4_2.

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Roberts, Peter W., and Saurabh A. Lall. "The EDP Data." In Observing Acceleration. Springer International Publishing, 2018. http://dx.doi.org/10.1007/978-3-030-00042-4_3.

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Roberts, Peter W., and Saurabh A. Lall. "Is Acceleration Working?" In Observing Acceleration. Springer International Publishing, 2018. http://dx.doi.org/10.1007/978-3-030-00042-4_4.

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Roberts, Peter W., and Saurabh A. Lall. "Driving the Net Flow of Funds." In Observing Acceleration. Springer International Publishing, 2018. http://dx.doi.org/10.1007/978-3-030-00042-4_5.

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Roberts, Peter W., and Saurabh A. Lall. "Building Application Pipelines." In Observing Acceleration. Springer International Publishing, 2018. http://dx.doi.org/10.1007/978-3-030-00042-4_6.

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Roberts, Peter W., and Saurabh A. Lall. "A Closer Look at Entrepreneur Selection." In Observing Acceleration. Springer International Publishing, 2018. http://dx.doi.org/10.1007/978-3-030-00042-4_7.

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Roberts, Peter W., and Saurabh A. Lall. "Programming to Close Knowledge, Network, and Capital Gaps." In Observing Acceleration. Springer International Publishing, 2018. http://dx.doi.org/10.1007/978-3-030-00042-4_8.

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Roberts, Peter W., and Saurabh A. Lall. "Acceleration in Emerging Markets." In Observing Acceleration. Springer International Publishing, 2018. http://dx.doi.org/10.1007/978-3-030-00042-4_9.

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Atti di convegni sul tema "Accelerationer"

Zhao, Jian, Yu Huang, Pengbo Liu, Qifei Fang, and Renjing Gao. "Nonlinear Design Model for Multi-Threshold Accelerometer Utilizing Magnetic Induced Multistable Mechanisms." In ASME 2018 International Design Engineering Technical Conferences and Computers and Information in Engineering Conference. American Society of Mechanical Engineers, 2018. http://dx.doi.org/10.1115/detc2018-85868.

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Different from traditional accelerometer, multi-threshold acceleration switch can be triggered to different working states by external accelerations without complex auxiliary circuits and controlling elements, which has great application potentials in aerospace, vehicle safety and consumer electronics. In this paper, a novel multi-threshold acceleration switch with anti-overloading function is designed and fabricated by incorporating both magnetic multi-stable structures and compliant cantilever contacts, which also can be used to distinguish specific acceleration pulse. To enhance the contact

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Mohamed, Maher G. "Acceleration Analysis of Platform-Type Manipulators." In ASME 1996 Design Engineering Technical Conferences and Computers in Engineering Conference. American Society of Mechanical Engineers, 1996. http://dx.doi.org/10.1115/96-detc/mech-1013.

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Abstract The screw algebra is used to efficiently derive expressions in compact form for both the angular accelerations of the moving links and the linear accelerations of points on the links of platform-type manipulators. The analysis employs the property that the acceleration state of the manipulator platform can be determined by considering the acceleration states of the links of only one — any one — of the manipulator legs. The obtained expressions provide an ease in symbolic and algebraic manipulation. The analysis is then extended to specify the acceleration center point of ithe nstantan

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Railsback, Ben T., and Richard M. Ziernicki. "Stand-Up Forklift Acceleration." In ASME 2010 International Mechanical Engineering Congress and Exposition. ASMEDC, 2010. http://dx.doi.org/10.1115/imece2010-38940.

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This paper will examine the accelerations present during the operation of stand-up forklifts. Forklifts, or powered industrial trucks, are typically operated from 1 of 2 postures. Forklifts are either operated from a seated posture or a standing posture. Previous research has focused on the threshold of acceleration at which a standing forklift operator will be unable to maintain postural stability, but did not detail peak and average accelerations generated by forklifts during typical turning maneuvers. This paper will detail the accelerations generated by stand-up forklifts during typical op

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Brockett, Theodore S. "Non-Linear Maneuver-Acceleration Analysis for Airborne Gas Turbine Engines." In ASME Turbo Expo 2010: Power for Land, Sea, and Air. ASMEDC, 2010. http://dx.doi.org/10.1115/gt2010-22435.

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A maneuver and acceleration analysis is a standard way to predict the structural displacements, clearance closures, and shaft and bearing loading due to aircraft turn rates and accelerations in airborne gas turbine engines. The industry standard practice is to perform these analyses assuming the acceleration and turn rates are steady-state. This gives rise to a static analysis in which the applied loads are a function of the aircraft turn rate, the aircraft translational accelerations, and the aircraft rotational accelerations. A method is presented for predicting static maneuver and accelerat

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Vanegas Useche, Libardo V., Magd M. Abdel Wahab, and Graham A. Parker. "Design of Noncircular Gears to Minimise Shaft Accelerations." In ASME 8th Biennial Conference on Engineering Systems Design and Analysis. ASMEDC, 2006. http://dx.doi.org/10.1115/esda2006-95560.

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This paper presents a novel pair of noncircular gear profiles for minimising shaft accelerations of the driven gear. The proposed profiles are developed based on an “exponential” function that is valid for a portion of gear rotation, and this function is extended to the remaining parts of the rotation of both gears. The exact shapes of the centrodes of the toothed bodies, which depend on a “smoothness” parameter, b, constitute a trade-off between the maximum shaft acceleration and the smoothness of the centrodes, so as to control the maximum tooth dynamic forces and stresses. A comparison betw

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Rizzo, Fabio, Alessandro Pagliaroli, Giuseppe Maddaloni, Antonio Occhiuzzi, and Andrea Prota. "Earthquake induced floor accelerations on a high-rise building: Scale model tests on a shaking table." In IABSE Congress, Christchurch 2021: Resilient technologies for sustainable infrastructure. International Association for Bridge and Structural Engineering (IABSE), 2021. http://dx.doi.org/10.2749/christchurch.2021.1312.

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The paper discusses results of shaking table tests on an in-scale high-rise building model. The purpose was to calibrate a dynamic numerical model for multi-hazard analyses to investigate the effects of floor acceleration. Accelerations, because of vibration of non-structural elements, affect both the comfort and safety of people. The research investigates the acceleration effects of both seismic and wind forces on an aeroelastic in-scale model of a multi-story building. The paper discusses the first phase of experiments and gives results of floor accelerations induced by several diff

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Jazar, Reza N., A. Khazaei, and M. Mahinfalah. "Razi Acceleration in Kinematics." In ASME 2011 International Mechanical Engineering Congress and Exposition. ASMEDC, 2011. http://dx.doi.org/10.1115/imece2011-63007.

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The time derivative of vectors depends on the coordinate frame in which the vector is expresses and the coordinate frame in which the derivative is taken. By redefining and expanding the Euler’s derivative transformation formula, we introduce the general theory of derivative and coordinate frames using a proper notation method. Introducing three coordinate frames, we show that the Coriolis acceleration is actually the addition of two different accelerations. Furthermore, a new acceleration term appears that we call it Razi acceleration.

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Mkandawire, Chimba, Mark A. Nicosia, Tara L. A. Moor, and Catherine F. Corrigan. "Postural Stability of Stand-Up Forklift Operators in Response to Normal Braking Procedures." In ASME 2005 International Mechanical Engineering Congress and Exposition. ASMEDC, 2005. http://dx.doi.org/10.1115/imece2005-81013.

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Balance retention and postural stability of forklift operators have not been well investigated in the literature. Our testing shows that forklift operators can maintain postural stability during routine braking procedures while using standup lift trucks, and that peak acceleration levels generated by lift trucks are below the peak acceleration levels mandated by the Americans with Disabilities Act for moving platforms. Our review of studies involving balance retention has shown that acceleration levels experienced by subjects who maintained postural stability were greater than the peak acceler

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Qian, Yuyang, Kaiming Yang, Yu Zhu, Wei Wang, and Chenhui Wan. "The Condition of Dynamic Stability for Self-Paced Treadmill Walking Based on Inverted Pendulum Model." In ASME 2020 International Mechanical Engineering Congress and Exposition. American Society of Mechanical Engineers, 2020. http://dx.doi.org/10.1115/imece2020-23461.

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Abstract A self-paced treadmill automatically adjusts speed in real-time to match the user’s walking speed, presumably leading to a more nature gait than fixed-speed treadmill. However, previous study has proven that the acceleration applied to the subjects would influence the gait stability. In order to have insights on to which extent will the accelerations affect gait stability, simulation analysis based on conceptual model has been done in the current study. This paper utilized a non-inertial frame based spring-loaded inverted pendulum model to analysis the condition of stability during co

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Gabella, W. E., R. D. Ruth, and R. L. Warnock. "Computation of invariant tori in 2 1/2 degrees of freedom." In Nonlinear−dynamics and particle acceleration. AIP, 1991. http://dx.doi.org/10.1063/1.40778.

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Rapporti di organizzazioni sul tema "Accelerationer"

Hausmann, Ricardo, Lant Pritchett, and Dani Rodrik. Growth Accelerations. National Bureau of Economic Research, 2004. http://dx.doi.org/10.3386/w10566.

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Sprangle, Philip, Eric Esarey, Jonathan Krall, and Antonio Ting. Vacuum Laser Acceleration. Defense Technical Information Center, 1995. http://dx.doi.org/10.21236/ada298811.

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Nation, John A. Novel Methods of Acceleration. Defense Technical Information Center, 1988. http://dx.doi.org/10.21236/ada204929.

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Chen, P. Cosmic Plasma Wakefield Acceleration. Office of Scientific and Technical Information (OSTI), 2004. http://dx.doi.org/10.2172/826879.

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Nation, John A. Novel Methods of Acceleration. Defense Technical Information Center, 1993. http://dx.doi.org/10.21236/ada264828.

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Wolfson, Johanna. Energy Innovation Acceleration Program. Office of Scientific and Technical Information (OSTI), 2015. http://dx.doi.org/10.2172/1339454.

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Carroll, Paul, Debra Roepke, and Doug Danley. Solar Utility Network Deployment Acceleration. Office of Scientific and Technical Information (OSTI), 2018. http://dx.doi.org/10.2172/1461249.

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Lacy, Susan Whitney, and Charles Snider. Machine Learning and Code Acceleration. Office of Scientific and Technical Information (OSTI), 2018. http://dx.doi.org/10.2172/1463447.

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Farnsworth, A. V. Jr. Laser acceleration of thin flyers. Office of Scientific and Technical Information (OSTI), 1995. http://dx.doi.org/10.2172/102212.

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Guo, Fan. Particle acceleration/energization during reconnection. Office of Scientific and Technical Information (OSTI), 2017. http://dx.doi.org/10.2172/1340946.

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