Relevant bibliographies by topics / Track And Field II

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  1. Journal articles
  2. Dissertations / Theses
  3. Books
  4. Book chapters
  5. Conference papers
  6. Reports

Academic literature on the topic 'Track And Field II'

Author: Grafiati
Published: 4 June 2021
Last updated: 1 February 2022

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Journal articles on the topic "Track And Field II"

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AKIYOSHI, Yoshinori. "A Study of Instruction in Track and Field (II)." Japanese Journal of Sport Education Studies 7, no. 1 (1987): 23–35. http://dx.doi.org/10.7219/jjses.7.23.

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Chen, Zhaowei, Wanming Zhai, and Qiang Yin. "Analysis of structural stresses of tracks and vehicle dynamic responses in train–track–bridge system with pier settlement." Proceedings of the Institution of Mechanical Engineers, Part F: Journal of Rail and Rapid Transit 232, no. 2 (October 28, 2016): 421–34. http://dx.doi.org/10.1177/0954409716675001.

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Pier settlement causes deformation of bridge structures, and further distorts the track structures placed on bridge decks, which may greatly affect the service life of the tracks and safe operation of trains. This study analyzes track stresses and vehicle dynamic responses in train–track–bridge system with pier settlement and determines the pier settlement safe value for high-speed railways with China Railway Track System (CRTS) II slab tracks. First, a detailed train–track–bridge dynamic model is established based on the train–track–bridge dynamic interaction theory. Verified with field experimental results, the model is utilized to calculate the dynamic responses of the vehicle–track–bridge system with different pier settlement values. Finally, the safe value of the pier settlement in the CRTS II slab track railway line is determined according to the limit of the vehicle dynamic indicators and the structural stresses of tracks. The results show that the vertical acceleration of the car body is more sensitive to pier settlement among all the vehicle dynamic indicators. Structural stresses of tracks caused by pier settlement appear at the positions of the pier with settlement and its two adjacent piers. The effect of train loads on the track stresses is much smaller than that of the pier settlement. It is important to adopt the structural stresses of tracks as the evaluation criteria of the pier settlement safe value than the vehicle dynamic indicators. Taking the effects of the bridge pier settlement, the vehicle load, the prestress effect, and the self-weight into consideration, the pier settlement safe value for the high-speed railway lines with the CRTS II slab track is 11.5 mm.
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Spataro, Stefano. "Track Fitting for the Belle II Experiment." EPJ Web of Conferences 214 (2019): 02039. http://dx.doi.org/10.1051/epjconf/201921402039.

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The Belle II experiment has started to take data in 2018, studying e+e- collisions at the KEK facility in Tsukuba (Japan), in a center of mass energy range of the Bottomonium states. The tracking system includes a combination of hit measurements coming from the vertex detector, made of pixel detectors and double-sided silicon strip detectors, and acentral drift chamber, inside a solenoid of 1.5 T magnetic field. Once the pattern recognition routines have identified the track candidates, hit measurements are fitted taking into account the different information coming from different detectors, the energy loss in the materials and the inhomogeneity of the magnetic field. Track fitting is performed by the generic track-fitting software GENFIT, which includes a Kalman filter improved by a deterministic annealing filter, in order to reject outlier hits coming from not correctly associated hits by the pattern recognition. Several mass hypotheses are used in the fit, in order to achieve the best track parameter estimation for each particle kind. This article presents the design of the track fitting in the Belle II software, showing results in terms of track parameter estimation as well as computing performances.
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Bilka, Tadeas, Jesus Abudinen, Karlheinz Georg Ackermann, Karol Mateusz Adamczyk, Patrick Ahlburg, Hiroaki Aihara, Oscar Alonso, et al. "Alignment for the first precision measurements at Belle II." EPJ Web of Conferences 245 (2020): 02023. http://dx.doi.org/10.1051/epjconf/202024502023.

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On March 25th 2019, the Belle II detector recorded the first collisions delivered by the SuperKEKB accelerator. This marked the beginning of the physics run with vertex detector. The vertex detector was aligned initially with cosmic ray tracks without magnetic field simultaneously with the drift chamber. The alignment method is based on Millepede II and the General Broken Lines track model and includes also the muon system or primary vertex position alignment. To control weak modes, we employ sensitive validation tools and various track samples can be used as alignment input, from straight cosmic tracks to mass-constrained decays. With increasing luminosity and experience, the alignment is approaching the target performance, crucial for the first physics analyses in the era of Super-BFactories. We will present the software framework for the detector calibration and alignment, the results from the first physics run and the prospects in view of the experience with the first data.
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Zhao, Lei, Lu Sun, and Tong Jiang Fan. "Temperature Field Analysis of CRTS-II Ballastless Track Slab Structure on Soil Subgrade." Applied Mechanics and Materials 587-589 (July 2014): 1255–61. http://dx.doi.org/10.4028/www.scientific.net/amm.587-589.1255.

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Temperature changes have a significant impact on the CRTS-II track structure in Beijing-Shanghai high-speed railway which has longitudinally connected type. In this paper temperature fields of ballastless track superstructure are simulated based on heat transfer theory and subroutine of ABAQUS that solar radiation DFLUX and ambient temperature FILM. The results showed that: the maximum temperature difference on the top of track slab is 20°C in summer and 10°C in winter; the maximum temperature difference in CA mortar layer is 4°C in summer and 2°C in winter; the maximum temperature difference in concrete substrate is 2°C in summer and 1°C in winter.
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Choudary, Maqsood, Angela Gail Narasimhan, and Nancy Wright. "2008 APSA Teaching and Learning Track Summaries—Track Twelve: Internationalizing the Curriculum II." PS: Political Science & Politics 41, no. 03 (June 18, 2008): 626–27. http://dx.doi.org/10.1017/s1049096508330893.

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Recent technological changes, particularly in the field of communications, have brought the world much closer than ever in the history of humankind. These changes, sometimes called globalization, require a paradigm shift in our thinking, teaching materials, and methods of delivery. This quantum leap is required not only in the subfield of international relations, but rather in all subfields of political science. There is also a dire need to learn from each others' experiences and give new direction to our teaching subfields.
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Zaras, Nikolaos, Angeliki-Nikoletta Stasinaki, and Gerasimos Terzis. "Biological Determinants of Track and Field Throwing Performance." Journal of Functional Morphology and Kinesiology 6, no. 2 (May 7, 2021): 40. http://dx.doi.org/10.3390/jfmk6020040.

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Track and field throwing performance is determined by a number of biomechanical and biological factors which are affected by long-term training. Although much of the research has focused on the role of biomechanical factors on track and field throwing performance, only a small body of scientific literature has focused on the connection of biological factors with competitive track and field throwing performance. The aim of this review was to accumulate and present the current literature connecting the performance in track and field throwing events with specific biological factors, including the anthropometric characteristics, the body composition, the neural activation, the fiber type composition and the muscle architecture characteristics. While there is little published information to develop statistical results, the results from the current review suggest that major biological determinants of track and field throwing performance are the size of lean body mass, the neural activation of the protagonist muscles during the throw and the percentage of type II muscle fiber cross-sectional area. Long-term training may enhance these biological factors and possibly lead to a higher track and field throwing performance. Consequently, coaches and athletes should aim at monitoring and enhancing these parameters in order to increase track and field throwing performance.
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Sayeed, Md Abu, and Mohamed A. Shahin. "Design of ballasted railway track foundations using numerical modelling. Part II: Applications." Canadian Geotechnical Journal 55, no. 3 (March 2018): 369–96. http://dx.doi.org/10.1139/cgj-2016-0634.

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This paper is the second of two companion papers in relation to a new design method for ballasted railway track foundations. Development of the new design method has been explained in the first paper (i.e., Part I: Development), and the procedures for using the method and its practical application on some field case studies are presented in this paper. A special feature of the proposed design method is that it considers the true impact of train dynamic moving loads and number of repeated applications of the traffic tonnage. The proposed method is applied to four case studies of actual tracks and the results are compared with field measurements and found to be in good agreement. It should be noted that, although the proposed design method is able to overcome most shortcomings of the existing methods and found to provide excellent outcomes, further verification with more field case studies is highly desirable.
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Shankar, Sangeetha, Michael Roth, Lucas Andreas Schubert, and Judith Anne Verstegen. "Automatic Mapping of Center Line of Railway Tracks using Global Navigation Satellite System, Inertial Measurement Unit and Laser Scanner." Remote Sensing 12, no. 3 (January 28, 2020): 411. http://dx.doi.org/10.3390/rs12030411.

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Up-to-date geodatasets on railway infrastructure are valuable resources for the field of transportation. This paper investigates three methods for mapping the center lines of railway tracks using heterogeneous sensor data: (i) conditional selection of satellite navigation (GNSS) data, (ii) a combination of inertial measurements (IMU data) and GNSS data in a Kalman filtering and smoothing framework and (iii) extraction of center lines from laser scanner data. Several combinations of the methods are compared with a focus on mapping in tree-covered areas. The center lines of the railway tracks are extracted by applying these methods to a test dataset collected by a road-rail vehicle. The guard rails in the test area were also extracted during the center line detection process. The combination of methods (i) and (ii) gave the best result for the track on which the measurement vehicle had moved, mapping almost 100% of the track. The combination of methods (ii) and (iii) and the combination of all three methods gave the best result for the other parallel tracks, mapping between 25% and 80%. The mean perpendicular distance of the mapped center lines from the reference data was 1.49 meters.
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Malliaropoulos, Nikolaos, Maria Ntessalen, Emmanuel Papacostas, Umile Giuseppe Longo, and Nicola Maffulli. "Reinjury after Acute Lateral Ankle Sprains in Elite Track and Field Athletes." American Journal of Sports Medicine 37, no. 9 (July 17, 2009): 1755–61. http://dx.doi.org/10.1177/0363546509338107.

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Background Lateral ankle sprains can lead to persistent disability in athletes. The authors studied the effect of a lateral ankle sprain on reinjury occurrence in the same region. Hypothesis There will be no difference in reinjury rate between low-grade (grades I and II) and high-grade (IIIA and IIIB) acute lateral ankle sprains. Study Design Cohort study (prognosis); Level of evidence, 1. Methods From 1996 to 2004, the authors managed 202 elite Greek track and field athletes for an acute lateral ankle sprain. Sprains were classified into 4 degrees (I, II, IIIA, and IIIB). The same rehabilitation protocol was prescribed for all the athletes. The rate of a lateral ankle reinjury was recorded in the 24 months following injury. Results At a follow-up of 24 months, 36 of 202 athletes (17.8%) experienced a second lateral ankle sprain. Of the 79 athletes with a grade I injury, 11 (14%) experienced a recurrence during the study period. Of the 81 athletes with a grade II injury, 23 (29%) experienced a recurrence during the study period. Of the 36 athletes with a grade IIIA injury, 2 (5.6%) experienced a recurrence during the study period. Of the 6 athletes with a grade IIIB injury, none experienced a recurrence during the study period. Conclusion Athletes with a grade I or II lateral ankle sprain are at higher risk of experiencing a reinjury. Low-grade acute lateral ankle sprains result in a higher risk of reinjury than high-grade acute lateral ankle sprains.
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Dissertations / Theses on the topic "Track And Field II"

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Powell, Raymond Brown E. R. "Predicting field performance on the NCAT pavement test track." Auburn, Ala., 2006. http://repo.lib.auburn.edu/2006%20Summer/Dissertations/POWELL_RAYMOND_1.pdf.

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Benson, Marni J. "Nutrient intake in female collegiate track and field athletes." Connect to online version, 2009. http://www.oregonpdf.org/search-results.cfm?crit=catid&searchString=HE+905.

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O’Neil, Kason M., and Jennifer M. Krause. "The Sport Education Model: A Track and Field Unit Application." Digital Commons @ East Tennessee State University, 2016. https://dc.etsu.edu/etsu-works/4051.

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Track and field is a traditional instructional unit often taught in secondary physical education settings due to its history, variety of events, and potential for student interest. This article provides an approach to teaching this unit using the sport education model (SEM) of instruction, which has traditionally been presented as a model for team and dual sports. The application of the SEM to this individual sport provides teachers with an opportunity to provide their students with an authentic, engaging and festive environment in which to learn a sport that has been around for centuries.
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Bollschweiler, Laurence R. "A biomechanical analysis of male and female intermediate hurdlers and steeplechasers /." Diss., CLICK HERE for online access, 2008. http://contentdm.lib.byu.edu/ETD/image/etd2254.pdf.

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Painter, Keith B., G. Gregory Haff, Michael W. Ramsey, Jeff McBride, N. Travis Triplett, William A. Sands, Hugh S. Lamont, Margaret E. Stone, and Michael H. Stone. "Strength Gains: Block Vs DUP Weight-Training among Track and Field Athletes." Digital Commons @ East Tennessee State University, 2012. https://dc.etsu.edu/etsu-works/4132.

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Recently, the comparison of “periodized” strength training methods has been a focus of both exercise and sport science. Daily undulating periodization (DUP), using daily alterations in repetitions, has been developed and touted as a superior method of training, while block forms of programming for periodization have been questioned. Therefore, the purpose of this study is to compare block to DUP in Division I track and field athletes. Thirty-one athletes were assigned to either a 10-wk block or DUP training group in which sex, year, and event were matched. Over the course of the study, there were 4 testing sessions, which were used to evaluate a variety of strength characteristics. Although performance trends favored the block group for strength and rate of force development, no statistically significant differences were found between the 2 training groups. However, statistically different (P ≤ .05) values were found for estimated volume of work (volume load) and the amount of improvement per volume load between block and DUP groups. Based on calculated training efficiency scores, these data indicate that a block training model is more efficient than a DUP model in producing strength gains.
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Kuo, Pei-Hsin. "Measurement of Modulus Change with Temperature of Synthetic Track Materials." Fogler Library, University of Maine, 2008. http://www.library.umaine.edu/theses/pdf/KuoPH2008.pdf.

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Muna, Demitri Nadeem. "Three Dimensional Analysis and Track Reconstruction in the DRIFT-II Dark Matter Detector." Thesis, University of Sheffield, 2008. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.489729.

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The biggest question in astrophysics and cosmology today is identifying the composition of the Universe. Approximately 25% is thought to be comprised of dark matter, particles that lie outside of the standard model of particle physics and have such a low cross section that they have to date evaded detection despite the substantial indirect observational evidence. DRIFT-II is one of about two dozen experiments designed to directly detect dark matter in the laboratory. Dark matter particles, through an elastic nuclear recoil, should create ionisation tracks in the detector. A positive signal would be the identification of a number of dark matter events that have an anisotropic distribution of recoil directions peaked in the direction of solar motion. The work presented here is a detailed analysis of the data from the DRIFT-lIb experiment and includes event discrimination and techniques for two and three dimensional track reconstruction. The expected dark matter event rate given the latest experimental results is calculated for this particular experiment with a result of 8.6 . 10-3 events per kg·day. The lower energy resolution limit of the detector is measured as 1.23 keV for an electron recoil and 3.46 keV for a sulphur nucleus recoil. Simulations of the particle interactions expected in the detector are performed and applied to experimental data. A full analysis of the directional sensitivity of the detector is also presented. Finally, a dark matter exclusion limit is calculated from experimental data to be 6.9 10-2 pb for a WIMP mass of 100 GeV/c2
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Lawless, Freda Janet. "A profile and training programme of psychological skills for track and field athletes." Thesis, Stellenbosch : Stellenbosch University, 2013. http://hdl.handle.net/10019.1/85644.

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Thesis (MScSportSc)--Stellenbosch University, 2013.
ENGLISH ABSTRACT: The purpose of this study was to compile a sport psychological skills profile of track and field athletes and to determine whether a purposefully-developed psychological-skills training (PST) programme would affect this profile and athletic performance. The study was conducted in two phases. During the first phase 143 student athletes completed sport psychological skills questionnaires before competing in the 2011 University Sport South Africa (USSA) Athletics Championship. The athletes’ perceived importance of psychological skills, psychologically preparedness, and need for psychological skills training were investigated. The athletes’ best performances at the championship were recorded and their IAAF performance points calculated. The majority of the athletes perceived PST as important. However, in contrast, a large percentage was uncertain about their need for PST programmes and, alarmingly, most of the athletes under-utilized the services of sport psychologists. This could possibly indicate a resistance to PST. Overall, the results revealed poor sport psychological skill levels. Only the achievement motivation and goal directedness dimensions showed satisfactory results. Effect sizes were used to compare the sport psychological skill levels of more and less successful athletes. This revealed significant differences between the respective groups. The within-group comparisons showed that the more successful sprinters outscored the less successful sprinters in the subscales of stress control and achievement motivation. Achievement motivation was the only aspect that differed significantly between the more and less successful middle and long-distance athletes. Among the jumpers, confidence and stress control distinguished between the top and bottom athletes. The more successful throwers recorded higher imagery and achievement motivation scores than the less successful throwers. The results from the first phase were used to develop a PST programme aimed at improving the sport psychological skill levels and performance of student track and field athletes. In Phase Two, athletes from Stellenbosch University were divided into an experimental (n = 24) and control group (n = 18). Both groups underwent pre and post-testing of the same psychological skills questionnaires used in the first phase, whilst their athletic performances were recorded on both occasions. The experimental group participated in a PST programme consisting of seven sessions which covered the following topics: achievement motivation, goal-directedness, managing somatic anxiety, managing cognitive anxiety, self-confidence, concentration, and imagery. In addition to these sessions daily activities and assignments were completed in a workbook. The effectiveness of the PST programme in improving the athletes’ sport psychological skills levels is evident from the improvements observed in nine of the eleven subscales among the experimental group opposed to four skills among the control group. Inexplicably, the control group’s athletic performance improved significantly more than that of the experimental group. Further research into the role and effectiveness of PST in track and field is recommended.
AFRIKAANSE OPSOMMING: Die doel van hierdie studie was om ’n sportsielkundige vaardigheidsprofiel vir baan- en veldatlete saam te stel en om te bepaal tot watter mate ’n sportsielkundige vaardigheidsprogram (SVP) hierdie profiel en atletiekprestasie sal beïnvloed. Die navorsing het uit twee fases bestaan. Gedurende fase een het 143 studente-atlete verskeie sportsielkundige vraelyste voltooi voor deelname aan die 2011 Suid-Afrikaanse Studente-Atletiekkampioenskappe (USSA). Die atlete se persepsie oor die belangrikheid van sielkundige vaardighede, sielkundige voorbereiding en behoefte aan onderrig in sielkundige vaardighede is ondersoek. Die atlete se beste vertonings tydens die kampioenskappe is gemonitor en hul IAAF- prestasiepunte bereken. Die meerderheid van hierdie atlete het aangedui dat sportsielkundige vaardigheidsontwikkeling belangrik is, maar in teensteling hiermee het ’n groot persentasie aangedui dat hulle onseker is oor hul behoefte aan sportsielkundige vaardigheidsontwikkeling. Die bevinding dat die meerderheid van die atlete nie genoegsaam van sportsielkundige dienste gebruik maak nie, is kommerwekkend. Hierdie verskynsel kan op ’n weerstand teen sportsielkundige vaardigheids-ontwikkeling dui. In geheel het die sportsielkundige profiel van hierdie baan- en veldatlete swak vertoon, behalwe vir prestasiemotivering en doelgerigtheid wat bevredigende resultate opgelewer het. Effekgroottes is gebruik om die sportsielkundige vaardighede van minder en meer suksesvolle atlete met mekaar vergelyk. Dit het beduidende verskille tussen die groepe opgelewer. Die binnegroepvergelykings het getoon dat meer suksesvolle naellopers hoër tellings as minder suksesvolle naellopers in die volgende subskale behaal het: stresbeheer en prestasiemotivering. Prestasiemotivering was ook die enigste subskaal wat tussen meer en minder suksesvolle middel- en langafstandatlete kon onderskei. Selfvertroue en stresbeheer was twee aspekte wat tussen meer en minder suksesvolle springers gediskrimineer het. Prestasiemotivering en beelding was die enigste sportsielkundige dimensies wat tussen meer en minder suksesvolle gooiers kon onderskei. Die meer suksesvolle gooiers het beter vlakke met betrekking tot hierdie twee subskale getoon. Die resultate van die eerste fase is gebruik om ’n sportsielkundige intervensieprogram te ontwikkel waardeur sielkundige vaardighede en prestasie van tersiêre baan- en veldatlete verbeter kan word. In die tweede fase is atlete van die Stellenbosch Universiteit in ’n eksperimentele- (n = 24) en kontrolegroep (n = 18) verdeel. Beide groepe het dieselfde sportsielkundige vraelyste as in die eerste fase, voor en na afloop van die intervensieprogram, waaraan die eksperimentele groep meegedoen het, voltooi. Alle deelnemers se atletiekprestasies is voor en na afloop van die intervensieprogram genoteer. Die eksperimentele groep het aan die ontwikkelde sportsielkundige vaardigheidsprogram deelgeneem wat uit die volgende sewe sessies bestaan het: prestasiemotivering, doelgerigtheid, somatiese angsbeheer, kognitiewe angsbeheer, selfvertroue, konsentrasie en beelding. Hierdie sessies is deur daaglikse aktiwiteite aangevul en opdragte wat in ’n werkboek voltooi moes word. Die effektiwiteit van die program in die ontwikkeling van sielkundige vaardighede blyk duidelik uit die bevinding dat die eksperimentele groep betekenisvolle verbeteringe getoon het in nege uit elf sportsielkundige vaardighede teenoor die vier vaardighede wat by die kontrolegroep verbeter het. ’n Onverklaarbare bevinding was egter dat die kontrolegroep se atletiekprestasies betekenisvol meer verbeter het as die eksperimentele groep s’n. Verdere navorsing oor die rol en effektiwiteit van sportsielkundige vaardigheidsontwikkeling in atletiek word aanbeveel.
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Hussey, Sandra L. "Factors influencing body image perception of Eastern Illinois University track and field athletes /." View online, 2003. http://repository.eiu.edu/theses/docs/32211131163025.pdf.

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Traina, Zachary J. "Design of a multi-axis force transducer with applications in track and field." Thesis, Massachusetts Institute of Technology, 2005. http://hdl.handle.net/1721.1/32963.

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Thesis (S.B.)--Massachusetts Institute of Technology, Dept. of Mechanical Engineering, 2005.
Includes bibliographical references (leaf 54).
The objective of this thesis is the design and implementation of a multi-axis force transducer to be integrated into a set of track and field starting blocks. The feedback from this transducer can be used by athletes and coaches to analyze race starts, with the intention of maximizing the runner's speed and power while decreasing wasted side loads and torques. This thesis describes the design of the transducer itself and the supporting infrastructure that connects it to an existing pair of track starting blocks. The transducer is tested in several field trials and generates a measurable voltage output that varies linearly with applied load and loading position. Data collected from the field trials is further analyzed to give insight into the starting mechanics of a collegiate sprinter.
by Zachary J. Traina.
S.B.
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Books on the topic "Track And Field II"

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Ltd, Canviro Consultants. Fluctuations of trace contaminants in municipal sewage treatment plants: Phase II field studies. Toronto: Ministry of the Environment, 1991.

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Zamperini, Louis. Devil at my heels: A heroic Olympian's astonishing story of survival as a Japanese POW in World War II. New York: Harper, 2011.

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Program, AAF/CIF Coaching. Track & field. Los Angeles: Health for Life, 1995.

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Track & field. Mankato, Minn: Smart Apple Media, 1995.

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Track & field. Grand Rapids, Mich: Zondervan Pub. House, 1995.

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Potts, Steve. Track & field. Mankato, MN: Creative Education, 1993.

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Gifford, Clive. Track and field. New York: PowerKids Press, 2009.

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Track and field. Mankato, MN: Amicus High Interest, 2016.

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Track and field. Bath: Cherrytree, 1991.

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Ward, Tony. Track and field. Crystal Lake, IL: Rigby Interactive Library, 1997.

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Book chapters on the topic "Track And Field II"

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Downing, Taylor. "Track and Field." In Olympia, 79–94. London: British Film Institute, 2012. http://dx.doi.org/10.1007/978-1-84457-582-4_7.

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Thing, James, and Volker Scheer. "Track and Field." In Sports-related Fractures, Dislocations and Trauma, 955–58. Cham: Springer International Publishing, 2020. http://dx.doi.org/10.1007/978-3-030-36790-9_73.

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Zempe, Eric D. "Track and Field Injuries." In Epidemiology of Pediatric Sports Injuries, 138–51. Basel: KARGER, 2005. http://dx.doi.org/10.1159/000084287.

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Banlaoi, Rommel C. "Cooperation through Track II mechanisms." In Routledge Handbook of the South China Sea, 392–410. Milton Park, Abingdon, Oxon; New York, NY: Routledge, 2021.: Routledge, 2021. http://dx.doi.org/10.4324/9780367822217-27.

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Zhai, Wanming. "Field Test on Vehicle–Track Coupled System Dynamics." In Vehicle–Track Coupled Dynamics, 231–58. Singapore: Springer Singapore, 2019. http://dx.doi.org/10.1007/978-981-32-9283-3_5.

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Weise, K. "Injuries in Track and Field Athletics." In Die Chirurgie und ihre Spezialgebiete Eine Symbiose, 456–59. Berlin, Heidelberg: Springer Berlin Heidelberg, 1991. http://dx.doi.org/10.1007/978-3-642-95662-1_200.

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Kijowski, Richard, and Michael J. Tuite. "Imaging of Track and Field Injuries." In Imaging in Sports-Specific Musculoskeletal Injuries, 623–40. Cham: Springer International Publishing, 2016. http://dx.doi.org/10.1007/978-3-319-14307-1_23.

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Roman, Steven. "Galois Theory II." In Field Theory, 127–45. New York, NY: Springer New York, 1995. http://dx.doi.org/10.1007/978-1-4612-2516-4_7.

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Gorodentsev, Alexey L. "Algebraic Field Extensions." In Algebra II, 295–314. Cham: Springer International Publishing, 2017. http://dx.doi.org/10.1007/978-3-319-50853-5_13.

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Svehla, Drazen. "Track-to-Track Ambiguity Resolution for Zero-Differences—Integer Phase Clocks." In Geometrical Theory of Satellite Orbits and Gravity Field, 297–317. Cham: Springer International Publishing, 2018. http://dx.doi.org/10.1007/978-3-319-76873-1_20.

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Conference papers on the topic "Track And Field II"

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Li, Ying, Luan Xu, Bo Hu, and Yuejun Li. "A similarity retrieval approach for weighted track and ambient field of tropical cyclones." In ADVANCES IN ENERGY SCIENCE AND ENVIRONMENT ENGINEERING II: Proceedings of 2nd International Workshop on Advances in Energy Science and Environment Engineering (AESEE 2018). Author(s), 2018. http://dx.doi.org/10.1063/1.5029738.

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Carolan, Michael E., David Y. Jeong, and A. Benjamin Perlman. "Engineering Studies on Joint Bar Integrity: Part II — Finite Element Analyses." In 2014 Joint Rail Conference. American Society of Mechanical Engineers, 2014. http://dx.doi.org/10.1115/jrc2014-3708.

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This paper is the second in a two-part series describing research sponsored by the Federal Railroad Administration (FRA) to study the structural integrity of joint bars. In Part I, observations from field surveys of joint bar inspections conducted on revenue service track were presented [1]. In this paper, finite element analyses are described to examine the structural performance of rail joints under various loading and tie-ballast support conditions. The primary purpose of these analyses is to help interpret and understand the observations from the field surveys. Moreover, the finite element analyses described in this paper are applied to conduct comparative studies and to assess the relative effect of various factors on the structural response of jointed rail to applied loads. Such factors include: discrete tie support (i.e. supported joint versus suspended joint with varying spans between effective ties), bolt pattern (four versus six bolts), initial bolt tension, and easement. In addition, results are shown for 90 lb rail joined with long-toe angle bars compared to 136 lb rail joined with standard short-toe joint bars.
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Jeong, David Y., Radim Bruzek, and Ali Tajaddini. "Engineering Studies on Joint Bar Integrity: Part I — Field Surveys and Observed Failure Modes." In 2014 Joint Rail Conference. American Society of Mechanical Engineers, 2014. http://dx.doi.org/10.1115/jrc2014-3706.

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This paper is the first of a two-part series describing a research project, sponsored by the Federal Railroad Administration (FRA), to study the structural integrity of joint bars. In Part I of this series, observations from field surveys conducted on revenue service track are presented. Automated and visual inspections of rail joints were conducted to identify defective joint bars. Detailed information and measurements were collected at various joint locations. The survey team consisted of personnel from ENSCO, Inc. and Transportation Technology Center, Inc. (TTCI), working in cooperation with staff from participating railroads. Part II of this series describes the development of finite element analyses of jointed rail, which is being carried out by the Volpe National Transportation Systems Center (Volpe Center).
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Pátý, Marek, Bogdan Cernat, Cis De Maesschalck, and Sergio Lavagnoli. "Experimental and Numerical Investigation of Optimized Blade Tip Shapes: Part II — Tip Flow Analysis and Loss Mechanisms." In ASME Turbo Expo 2018: Turbomachinery Technical Conference and Exposition. American Society of Mechanical Engineers, 2018. http://dx.doi.org/10.1115/gt2018-76567.

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The leakage flows within the gap between the tips of unshrouded rotor blades and the stationary casing of high-speed turbines are the source of significant aerodynamic losses and thermal stresses. In the pursuit for higher component performance and reliability, shaping the tip geometry offers a considerable potential to modulate the rotor tip flows and to weaken the heat transfer onto the blade and casing. Nevertheless, a critical shortage of combined experimental and numerical studies addressing the flow and loss generation mechanisms of advanced tip profiles persists in the open literature. A comprehensive study is presented in this two-part paper that investigates the influence of blade tip geometry on the aerother-modynamics of a high-speed turbine. An experimental and numerical campaign has been performed on a high-pressure turbine stage adopting three different blade tip profiles. The aerothermal performance of two optimized tip geometries (one with a full three-dimensional contoured shape and the other featuring a multi-cavity squealer-like tip) is compared against that of a regular squealer geometry. In the second part of this paper, we report a detailed analysis on the aerodynamics of the turbine as a function of the blade tip geometry. Reynolds-averaged Navier-Stokes simulations, adopting the Spalart-Allmaras turbulence model and experimental boundary conditions, were run on high-density unstructured meshes using the Numeca FINE/Open solver. The simulations were validated against time-averaged and time-resolved experimental data collected in an instrumented turbine stage specifically set up for the simultaneous testing of multiple blade tips at scaled engine-representative conditions. The tip flow physics is explored to explain variations in turbine performance as a function of the tip geometry. Denton’s mixing loss model is applied to the predicted tip gap aerodynamic field to identify and quantify the loss reduction mechanisms of the alternative tip designs. An advanced method based on the local triple decomposition of relative motion is used to track the location, size and intensity of the vortical flow structures arising from the interaction between the tip leakage flow and the main gas path. Ultimately, the comparison between the unconventional tip profiles and the baseline squealer tip highlights distinct aerodynamic features in the associated gap flow field. The flow analysis provides guidelines for the designer to assess the impact of specific tip design strategies on the turbine aerodynamics and rotor heat transfer.
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Childs, Dara, Andrew Schaible, and Bader Al Jughaiman. "Static and Dynamic Performance of Pressure Dam Bearings With Dam Steps That Are (I) Square and (II) Filleted." In ASME Turbo Expo 2008: Power for Land, Sea, and Air. ASMEDC, 2008. http://dx.doi.org/10.1115/gt2008-50136.

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Measured rotordynamic force coefficients (stiffness, damping, and added-mass) and static characteristics (eccentricity and attitude angle) are presented for two nearly identical pressure-dam bearings. One bearing has a square step at the dam; the other has a filleted step. Because of reduced manufacturing costs, the filleted-step design is used widely. The bearings’ groove dimensions are close to the optimum predictions of Nicholas and Allaire [2] and are consistent with current field applications. The bearings have a diameter of 117.1 mm (4.61 in), a length-to-diameter ratio of 0.655, and a nominal radial clearance of 0.133 mm (5.25 mils). The bottom pad has a deep, centered relief track over 25% of the pad’s axial length. The upper pad for both bearings has a step located at 130° from the horizontal and a 0.620 mm (15.75 mils) deep dam. The dam on the upper pad of one bearing has a square step; the other bearing has a filleted step. Test conditions include four shaft speeds (4000, 6000, 8000 and 10000 rpm) and bearing unit loads from 0 to 1034 kPa (150 psi). Laminar flow was produced for all test conditions within the bearing lands. For the same operating conditions, the filleted step bearing operates at a lower eccentricity ratio (has a larger minimum film thickness). The filleted step design has higher direct stiffness coefficients. Both cross-coupled stiffness coefficients are positive (favorable for stability) for both designs but the filleted design produces higher values. In regard to direct damping, the filleted-step design has higher damping in the load direction and comparable values in the unloaded direction. Hence, for the same operating conditions, a filleted step design should produce reduced amplitudes at or near a critical speed. With respect to stability as defined by WFR, the filleted design is consistently better (lower value) than the square step design, resulting in an elevated onset speed of instability for the filleted-step design.
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"Industry track: Session II." In 2012 IEEE International Conference on Software Maintenance (ICSM). IEEE, 2012. http://dx.doi.org/10.1109/icsm.2012.6405315.

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Xiao, Xinwen, Andrew A. McCarter, and Budugur Lakshminarayana. "Tip Clearance Effects in a Turbine Rotor: Part I — Pressure Field and Loss." In ASME Turbo Expo 2000: Power for Land, Sea, and Air. American Society of Mechanical Engineers, 2000. http://dx.doi.org/10.1115/2000-gt-0476.

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This paper presents an experimental investigation of the effects of the tip clearance flow in an axial turbine rotor. The effects investigated include the distribution and the development of the pressure, the loss, the velocity, and the turbulence fields. These flow fields were measured using the techniques of static pressure taps, rapid response pressure probes, rotating five-hole probes, and Laser Doppler Velocimeter. Part I of this paper covers the loss development through the passage, and the pressure distribution within the passage, on the blade surfaces, on the blade tip, and on the casing wall. Regions with both the lowest pressure and the highest loss indicate the inception and the trace of the tip leakage vortex. The suction effect of the vortex slightly increases the blade loading near the tip clearance region. The relative motion between the turbine blades and the casing wall results in a complicated pressure field in the tip region. The fluid near the casing wall experiences a considerable pressure difference across the tip. The highest total pressure drop and the highest total pressure loss were both observed in the region of the tip leakage vortex, where the loss is nearly twice as high as that near the passage vortex region. However, the passage vortex produces more losses than the tip leakage vortex in total. The development of the loss in turbine rotor is similar to that observed in cascades. Part II of this paper covers the velocity and the turbulence fields.
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Busse, Peter, Andreas Krug, and Konrad Vogeler. "Effects of the Steady Wake-Tip Clearance Vortex Interaction in a Compressor Cascade: Part II — Numerical Investigations." In ASME Turbo Expo 2014: Turbine Technical Conference and Exposition. American Society of Mechanical Engineers, 2014. http://dx.doi.org/10.1115/gt2014-26121.

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An important aspect of the aerodynamic flow field in the tip region of axial compressor rotors is the unsteady interaction between the tip clearance vortex and the incoming stator wakes. In order to gain an improved understanding of the mechanics involved, systematic studies need to be performed. As a first step towards the characterisation of the dynamic effects caused by the relative movement of the blade rows, the impact of a stationary wake-induced inlet disturbance on a linear compressor cascade with tip clearance will be analyzed. The wakes were generated by a fixed grid of cylindrical bars with variable pitch being placed at discrete pitchwise positions. Part II of this two-part paper focuses on the numerical studies conducted with the scientific flow solver TRACE. Selected measurements, which are discussed in detail in the first part of this paper, are compared with steady state RANS simulation data to determine the validity of the computational model. For this purpose, the flow field obtained in the passage (PIV), at the cascade exit (five-hole probes) and the endwall pressure distributions were used. The presented numerical results show potentials and limitations of the steady state CFD for the prediction of the investigated flow phenomena. The computations provide the initial conditions for future unsteady calculations, and enable a separate depiction of potential effects of steady and unsteady wake-tip clearance vortex interaction.
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Mathison, R. M., C. W. Haldeman, and M. G. Dunn. "Heat Transfer for the Blade of a Cooled Stage and One-Half High-Pressure Turbine: Part II—Independent Influences of Vane Trailing Edge and Purge Cooling." In ASME Turbo Expo 2010: Power for Land, Sea, and Air. ASMEDC, 2010. http://dx.doi.org/10.1115/gt2010-22715.

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The independent influences of vane trailing edge and purge cooling are studied in detail for a one-and-one-half stage transonic high-pressure turbine operating at design corrected conditions. This paper builds on the conclusions of Part I, which investigated the combined influence of all cooling circuits. Heat-flux measurements for the airfoil, platform, tip, and root of the turbine blade as well as the shroud and the vane side of the purge cavity are used to track the influence of cooling flow. By independently varying the coolant flow rate through the vane trailing edge or purge circuit, the region of influence of each circuit can be isolated. Vane trailing edge cooling is found to create the largest reductions in blade heat transfer. However, much of the coolant accumulates on the blade suction surface and little influence is observed for the pressure surface. In contrast, the purge cooling is able to cause small reductions in heat transfer on both the suction and pressure surfaces of the airfoil. Its region of influence is limited to near the hub, but given that the purge coolant mass flow rate is 1/8th that of the vane trailing edge, it is impressive that any impact is observed at all. The cooling contributions of these two circuits account for nearly all of the cooling reductions observed for all three circuits in Part I, indicating that the vane inner cooling circuit that feeds most of the vane film-cooling holes has little impact on the downstream blade heat transfer. Time-accurate pressure measurements provide further insight into the complex interactions in the purge region that govern purge coolant injection. While the pressures supplying the purge coolant and the overall coolant flow rate remain fairly constant, the interactions of the vane pressure field and the rotor pressure field create moving regions of high pressure and low pressure at the exit of the cavity. This results in pulsing regions of injection and ingestion.
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Borghesani, P., R. Ricci, S. Chatterton, and P. Pennacchi. "Fault Symptoms of Rolling Element Bearings Under Variable Operating Conditions: A Multi Domain Analysis." In ASME 2012 International Design Engineering Technical Conferences and Computers and Information in Engineering Conference. American Society of Mechanical Engineers, 2012. http://dx.doi.org/10.1115/detc2012-70948.

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Diagnostics of rolling element bearings have been traditionally developed for constant operating conditions, and sophisticated techniques, like Spectral Kurtosis or Envelope Analysis, have proven their effectiveness by means of experimental tests, mainly conducted in small-scale laboratory test-rigs. Algorithms have been developed for the digital signal processing of data collected at constant speed and bearing load, with a few exceptions, allowing only small fluctuations of these quantities. Owing to the spreading of condition based maintenance in many industrial fields, in the last years a need for more flexible algorithms emerged, asking for compatibility with highly variable operating conditions, such as acceleration/deceleration transients. This paper analyzes the problems related with significant speed and load variability, discussing in detail the effect that they have on bearing damage symptoms, and propose solutions to adapt existing algorithms to cope with this new challenge. In particular, the paper will i) discuss the implication of variable speed on the applicability of diagnostic techniques, ii) address quantitatively the effects of load on the characteristic frequencies of damaged bearings and iii) finally present a new approach for bearing diagnostics in variable conditions, based on envelope analysis. The research is based on experimental data obtained by using artificially damaged bearings installed on a full scale test-rig, equipped with actual train traction system and reproducing the operation on a real track, including all the environmental noise, owing to track irregularity and electrical disturbances of such a harsh application.
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Reports on the topic "Track And Field II"

1

Niczyporuk, Bogdan. Track Fitting in an Inhomogeneous Magnetic Field. Office of Scientific and Technical Information (OSTI), May 1991. http://dx.doi.org/10.2172/954194.

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Larson, Ray R. Berkeley's TREC 8 Interactive Track Entry: Cheshire II and Zprise. Fort Belvoir, VA: Defense Technical Information Center, January 2006. http://dx.doi.org/10.21236/ada456269.

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Khan, Feroz H., and Nick M. Masellis. US-Pakistan Strategic Partnership: A Track II Dialogue, Sixth Iteration. Fort Belvoir, VA: Defense Technical Information Center, January 2012. http://dx.doi.org/10.21236/ada555421.

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Author, Not Given. A Silicon Track Trigger for the D0 Experiment in Run II. Office of Scientific and Technical Information (OSTI), September 1998. http://dx.doi.org/10.2172/993213.

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Menzemer, Stephanie. Track reconstruction in the silicon vertex detector of the CDF II experiment. Office of Scientific and Technical Information (OSTI), January 2003. http://dx.doi.org/10.2172/1419203.

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Berglin, E. J. Hanford tank initiative vehicle/based waste retrieval demonstration report phase II, track 2. Office of Scientific and Technical Information (OSTI), July 1997. http://dx.doi.org/10.2172/325836.

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Balatsky, Galya I., and Benjamin M. Wolkov. India: Thinks Tanks, Educational Institutions, and Government-Affiliated Institutions Avalable for Track II. Office of Scientific and Technical Information (OSTI), August 2013. http://dx.doi.org/10.2172/1089882.

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Wright, Robert, and Jr. COBRA II Correlation Study & Field Performance Summary. Fort Belvoir, VA: Defense Technical Information Center, November 1997. http://dx.doi.org/10.21236/ada337597.

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Pawlak, Robert J., and Ron A. Stapleton. Nonparametric Multisensor Track Initiation Method for Nonuniform Nonstationary Environments Part II: A Comparison of M/N and ANMSTI Track Initiation Techniques Applied to the Wallops Island Multisensor Integration Experiment. Fort Belvoir, VA: Defense Technical Information Center, July 1995. http://dx.doi.org/10.21236/ada309319.

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Steedman, David W. Preliminary SPE Phase II Far Field Ground Motion Estimates. Office of Scientific and Technical Information (OSTI), March 2014. http://dx.doi.org/10.2172/1122059.

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