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Schalau, Jeff. "Javelina Resistant Plants." College of Agriculture and Life Sciences, University of Arizona (Tucson, AZ), 2010. http://hdl.handle.net/10150/144791.
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Schalau, Jeff. "Javelina Resistant Plants." College of Agriculture, University of Arizona (Tucson, AZ), 2017. http://hdl.handle.net/10150/625564.
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Morais, Alessandro Magno Lustosa de. "Determinação da concentração alveolar mínima (CAM) do sevofluorano em catetos (Tayassu tajacu)." Universidade Federal Rural do Semi-Árido, 2013. http://bdtd.ufersa.edu.br:80/tede/handle/tede/384.
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Inhaled anesthesia is a widely used technique in the different domestic animal species; however it is little studied in wild animals. The aim of this study was to determine the minimum alveolar concentration (MAC) of sevoflurane (SEVO) in peccaries (Tayassu tajacu), investigate its effects on physiological (heart and respiratory rates, temperature and blood pressure) and blood gas analysis as long as the quality of anesthesia recovery time. Ten adult male peccaries weighting 22.4 ± 1.31 kg were used. MAC determination was obtained through intentional motor response evaluated after supramaximal noxious stimuli by clamping the interdigital space. A positive or negative response to the stimulus was recorded, and ET SEVO then increased (if positive response) or decreased (if negative response) by 10%. Individual MAC was the average of multiple determinations. Physiological parameters and blood gas analysis at different times (before induction of anesthesia, to a concentration of 6%, after MAC determination, at MAC, and after extubation 1.5 MAC) were analyzed by analysis of variance (One Way RM ANOVA) for repeated measures followed by Tukey, the degree of significance of 5% (p <0,05). The MAC of sevoflurane for collared peccaries was determined as 4.26 ± 0.68% with the animals fully recovered at 32,0 ± 9,70 minutes. It was concluded by this study that the MAC for SEVO is similar to recent values reported for pigs, with fully short recovery time, but higher than general values reported for other species
A anestesia inalatória é uma técnica utilizada em diferentes espécies animais domésticas, no entanto pouco estudada em algumas espécies silvestres. Este estudo teve como objetivo determinar a concentração alveolar mínima (CAM) do sevofluorano em catetos (Tayassu tajacu), investigar seus efeitos nos parâmetros fisiológicos (frequências cardíaca e respiratória, temperatura e pressão arterial) e hemogasométricos além do tempo e a qualidade da recuperação anestésica. Foram utilizados dez catetos machos, adultos, hígidos, pesando 22.4 ± 1.31 kg. A determinação da CAM foi obtida através da resposta motora intencional avaliada após estímulos nociceptivos supramáximos pelo pinçamento do espaço interdigital. De acordo com as respostas obtidas (positivas ou negativas), a concentração foi aumentada ou diminuída em 10%. A média aritmética entre as concentrações do agente inalatório (com e sem resposta) foi utilizada na determinação da concentração alveolar mínima para esta espécie. Os parâmetros fisiológicos e hemogasométricos nos diferentes momentos (antes da indução da anestesia, a uma concentração de 6%, após a determinação da CAM, após 1,5 CAM e à extubação) foram analisados por analise de variância (One way ANOVA RM) para medidas repetidas seguidas por Tukey, sendo o grau de significância de 5% (p<0,05). A CAM de sevofluorano para catetos foi determinada em 4,26 ± 0,68%, com os animais se recuperando totalmente aos 32,0 ± 9,70 minutos. Concluiu-se neste estudo que a CAM para SEVO é semelhante aos valores recentes relatados para suínos com ótima qualidade da recuperação e curto tempo, porém maiores que os valores relatados para outras espécies
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Best, Russell J. "Javelin aerodynamics, flight simulation and optimisation of javelin release." Thesis, University of Salford, 1996. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.360385.
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Wilmer, Archie. "Javelin analysis using mathematical modeling." Thesis, Monterey, Calif. : Springfield, Va. : Naval Postgraduate School ; Available from National Technical Information Service, 1994. http://handle.dtic.mil/100.2/ADA283466.
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Thesis (M.S. in Applied Mathematics) Naval Postgraduate School, June 1994.Thesis advisor(s): Bard K. Mansager, Maurice D. Weir. "June 1994." Includes bibliographical references. Also available online.
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Cannella, David Anthony. "Heavy force analysis of Javelin." Thesis, Monterey, California. Naval Postgraduate School, 1994. http://hdl.handle.net/10945/30924.
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Present mission requirements and increased weapons technology dictate that there is a need to replace the US Army Infantry's medium antiarmor Dragon weapon system. In lieu of the Dragon, the U.S. Army is opting to field a new system called the Javelin Antitank Weapon System. This thesis explores the potential for the Javelin to enhance the operational effectiveness of the Mechanized Infantry assets of the U.S. Army. This analysis includes the development of Mechanized Infantry scenarios which employ the Janus(A) high resolution combat model. These scenarios model force-on-force trials of mechanized versus fully modernized armor heavy threats in deliberate defense and movement to contact missions. Results of the experimental data analysis indicate that the Javelin performs superior to the Dragon in terms of the mechanized force's range of antiarmor engagements, lethality, target stealing, and survivability. The findings to this thesis could benefit the U.S. Army in force structure and antiarmor weapon requirements with the future fielding of the Javelin to Mechanized Infantry units.
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Pate, Charles Abbot. "Javelin : a case study in model-test-model." Thesis, Monterey, California. Naval Postgraduate School, 1992. http://hdl.handle.net/10945/23940.
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Cobian, Daniel. "Sea Javelin : an analysis of naval force protection alternatives /." Thesis, Monterey, Calif. : Springfield, Va. : Naval Postgraduate School ; Available from National Technical Information Service, 2002. http://library.nps.navy.mil/uhtbin/hyperion-image/02Dec%5FCobian.pdf.
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Morriss, Calvin James. "Techniques used by elite javelin throwers to achieve high release speeds." Thesis, Manchester Metropolitan University, 2002. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.288142.
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Hurrion, Paul David. "The effect of neoprene athletic supports on cricket bowling and javelin throwing." Thesis, University of Chichester, 1997. http://eprints.chi.ac.uk/945/.
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This study investigated the technique of the individual, using an integrated biomechanical approach, to assess injury potential and performance. The effects of five neoprene athletic supports were investigated for the cricket bowl and javelin throw. A significant improvement in distance thrown and an increase in linear speed of body segmental movements were found for a lumbar support belt during the javelin throw. A two-handed overhead throwing activity was designed to investigate the effect of this lumbar support belt during the hyperextension - flexion movement of the torso. Significant differences in the distances thrown and segmental timing during the belt condition were found for both novice and experienced athletes. An integrated approach (three-dimensional cinematography, ground reaction forces and electromyography) was then used to analyse the effect of this lumbar support belt during the delivery phase of both sporting activities. The rate at which the torso uncoiled, (the relative peak shoulder to peak hip speed) was found to be significantly different during the belt condition for both activities. The results of these experiments suggest that the lumbar support belt enabled a more efficient transfer of speed to the upper body. A significant improvement in distance thrown during the lumbar support belt condition was found for the javelin throw.
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Basso, Francesco Saverio. "Experimentally and coupled CFD/CSD assisted structural and aeroelastic modelling of the Javelin UAV outboard wing section." Master's thesis, Alma Mater Studiorum - Università di Bologna, 2016.
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This study presents the procedure followed to make a prediction of the critical flutter speed for a composite UAV wing. At the beginning of the study, there was no information available on the materials used for the construction of the wing, and the wing internal structure was unknown. Ground vibration tests were performed in order to detect the structure’s natural frequencies and mode shapes. From tests, it was found that the wing possesses a high stiffness, presenting well separated first bending and torsional natural frequencies. Two finite element models were developed and matched to experimental results. It has been necessary to introduce some assumptions, due to the uncertainties regarding the structure. The matching process was based on natural frequencies’ sensitivity with respect to a change in the mechanical properties of the materials. Once experimental results were met, average material properties were also found. Aerodynamic coefficients for the wing were obtained by means of a CFD software. The same analysis was also conducted when the wing is deformed in its first four mode shapes. A first approximation for flutter critical speed was made with the classical V - g technique. Finally, wing’s aeroelastic behavior was simulated using a coupled CFD/CSD method, obtaining a more accurate flutter prediction. The CSD solver is based on the time integration of modal dynamic equations, requiring the extraction of mode shapes from the previously performed finite-element analysis. Results show that flutter onset is not a risk for the UAV, occurring at velocities well beyond its operative range.
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David, Jackie W. "A comparative analysis of the acquisition strategies of Army Tactical Missile System (ATACMS) and Javelin Medium Antiarmor Weapon System." Thesis, Monterey, Calif. : Springfield, Va. : Naval Postgraduate School ; Available from National Technical Information Service, 1995. http://handle.dtic.mil/100.2/ADA302934.
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Sellberg, Martin. "Stridsvagn 122 och Remote Weapon Station : Nya möjligheter till verkan och stridsteknik." Thesis, Swedish National Defence College, Swedish National Defence College, 2010. http://urn.kb.se/resolve?urn=urn:nbn:se:fhs:diva-771.
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Den här uppsatsen behandlar stridsvagn122 och Remote Weapon Station (RWS). Det finns ett verkansglapp mellan dagens kalibrar 120 mm och 7,62 mm. Observationsmöjligheterna i vissa situationer är begränsade. Syftet med uppsatsen är att undersöka vilka nya förmågor och möjligheter till ytterligare ett verkansalternativ en fjärrstyrd vapenplattform kan tillföra stridsvagn 122. De frågeställningarna som behandlas är: Vad kan en fjärrstyrd vapenplattform tillföra inom området stridsteknik? Vem i besättningen skall bemanna systemet? Vad kan en fjärrstyrd vapenplattform tillföra inom området graderad verkan? Metoden som används är kvalitativ textanalys. Materialet som analyseras består av reglementen ochinstruktionsböcker från Försvarsmakten, information från försvarsindustrin samt facklitteratur om vapen och stridsvagnar. Slutsatserna som dras är att en fjärrstyrd vapenplattform kan bidra med förbättringar inom området stridsteknik. Inom området graderad verkan kan en fjärrstyrdvapenplattform tillföra olika förmågor beroende på vilket vapensystem som väljs. Moduläriteten medför att verkan kan situationsanpassas. Jag bedömer att den i besättningen som lämpligen ska bemanna systemet är laddaren, men en större flexibilitet uppnås om även vagnchefen kan operera systemet, eftersom vissa situationer kräver att laddarens hela uppmärksamhet är fokuserad på kanonen.
This essay studies the Swedish main battle tank stridsvagn 122 and Remote Weapon Station. There is a gap between 120mm and 7.62mm. The observation possibilities in certain situations is limited. The purpose of this essay is to investigate which new abilities a remote weapons station can bring. The following issues are investigated: How does a Remote Weapon Station affect tactics on squad level? Who in the crew is most suited to man the system? Which scalable effects can a remote weapon station bring? The method used is qualitative text analysis. The analyzed material consists of regulations and manuals from the Armed Forces, information from the defence industry. Literature about Weapons and tanks written by civilian authors will be used in order to get a source from outside the Armed Forces. The conclusions drawn are that a remote weapons platform can contribute to enhancements of battle tactics on squad level. A Remote Weapons Station can introduce different new scalable effects depending on the weapon chosen for the specific task. I believe that the loader is the person in the crew that is most suited to man the RWS-system, but a higher degree of flexibility would be reached if also the tank commander could operate the system, since the loader in some situations must direct his full attention to the canon.
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McFadden, Willie J. "Comparison of Janus(A) simulated terrain vegetation codes to modified Janus(A) terrain vegetation codes for the Javelin antitank operational test." Thesis, Monterey, Calif. : Springfield, Va. : Naval Postgraduate School ; Available from National Technical Information Service, 1993. http://handle.dtic.mil/100.2/ADA273159.
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Thesis (M.S. in Operations Research) Naval Postgraduate School, September 1993.Thesis advisor(s): Mansager, Bard K. ; Kemple, William G. "September 1993." Cover title: Comparison ... modified terrain ... Bibliography: p. 43. Also available online.
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Buck, Christopher S. "A case analysis of the dual sourcing strategy as used in the acquisition of the Army's Javelin medium anti-armor weapons program." Thesis, Monterey, Calif. : Springfield, Va. : Naval Postgraduate School ; Available from National Technical Information Service, 1995. http://handle.dtic.mil/100.2/ADA306232.
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Hornsby, W. Guy, G. Gregory Haff, William A. Sands, Michael W. Ramsey, George K. Beckham, and Michael H. Stone. "Alterations in Strength Characteristics for Isometric and Dynamic Mid-Thigh Pulls in Collegiate Throwers Across 11 Weeks of Training." Digital Commons @ East Tennessee State University, 2013. https://dc.etsu.edu/etsu-works/4618.
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Aim: The purpose of this study was: 1) to investigate the alterations and relationships among training variables, performance variables, and physiological variables and 2) investigate the effects of strength training on potentiation complexes.
Methods: The study enrolled nine D-1 collegiate throwers and four control subjects. The throwers participated in an 11-week resistance training and throws program. Resistance training volume load and throwing volume were recorded for 11 weeks. Measurements of maximal strength (isometric mid-thigh pulls) and dynamic mid-thigh pulls (DMTP) across a spectrum of loads: Males- 60kg, 140kg, 180kg, 220kg, 140kg, 30% isometric peak force (IPF), Females- 60kg, 80kg, 100kg, 120kg, 80kg, 30% IPF), were measured at weeks 1, 7, and 11. The control group was tested for isometric maximum strength at T1 (week 1) and T3 (week 11)
Results: The throwers increased at each time point in isometric peak force (IPF), allometrically scaled IPF (IPFa), and isometric impulse. The throwers strength (IPF and IPFa) was significantly greater than the controls and the throwers experienced statistically significant changes in maximum strength from T1 to T3 when compared to the controls. The throwers demonstrated statistically significant changes in total load variables (variable for load 1+ load 2 + load 3 etc.) for DMTPs.
Conclusion: As a whole these data suggest a potential for increased performance capabilities specific to throwing. Some data trends indicate that potentiation can occur as a result of performing a heavy pull before a lighter one. However, increasing maximum strength as a result of focusing on strength training did not enhance this potentiation effect.
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Bernardi, Jeremy. "L’armement, la figure du combattant et le combat dans les peintures funéraires pariétales et vasculaires de Campanie et de Lucanie (fin Ve – début du IIIe siècle avant J.-C.)." Thesis, Paris, EHESS, 2020. http://www.theses.fr/2020EHES0173.
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Cette thèse porte sur les armes et les combattants représentés dans la peinture funéraire vasculaire et pariétale de Campanie et de Lucanie, dont la production commence dans la seconde partie du Ve siècle et s’éteint au début du IIIe siècle avant J.-C. Nous entendons montrer ici l’existence d’une idéologie élitaire particulière, dont les représentations permettent de discerner la trame et qui se situe à l’articulation des sphères religieuse (eschatologique), militaire et sociale. Cette idéologie militaire est construite autour de l’exploit militaire individuel, porté aux nues par la composition du « retour du guerrier », figurant un cavalier rapportant les dépouilles (spolia) de son ennemi vaincu, élément-clé permettant au combattant défunt d’accéder à l’immortalité. Les techniques de combat représentées dans ce contexte sont principalement celles du duel, qui constitue le mode d’affrontement le plus à même de permettre au vainqueur de se saisir des dépouilles de son adversaire. Les peintures étudiées révèlent ainsi une structure particulière de la bataille, qui relève d’un mode de guerre archaïque où les enjeux diffèrent de ceux de la guerre moderne de type clausewitzienne. L’examen des peintures permet également de confirmer les bouleversements militaires, sociaux et institutionnels connus par les textes qui ont lieu en Italie centrale et méridionale au cours du dernier tiers du IVe siècle, comme le rapprochement romano-campanien, la réforme d’Appius Claudius et les guerres samnitesThis thesis investigates the weapons and combatants depicted in the vascular and parietal funerary paintings of Campania and Lucania, whose production began in the second half of the fifth century and died out at the beginning of the third century BC. We intend to show that we can identify a particular military ideology visible through the paintings, which is situated at the confluence of the religious (eschatological), military and social spheres. The individual military exploit is celebrated through the composition called the "Return of the Warrior", depicting a horseman bringing back the spoils (spolia) of his defeated enemy, a key element allowing the deceased combatant to attain immortality. We will also see that the fighting techniques are focused on dueling. Single combat is the most likely to allow the victor to seize the spoils of his defeated opponent. The specifics of the battle as it is represented is characteristic of archaic warfare, which differs in substance from modern warfare. The paintings studied thus reveal a particular structure of the battle, characteristic of archaic warfare, which differs in substance from modern warfare. We will also be able to confirm the military, social and institutional upheavals known from ancient sources that took place in central and southern Italy during the last third of the fourth century, such as the Roman-Campanian rapprochement, the reform of Appius Claudius and the Samnite wars
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Schuster, Anthony. "Spatial and Temporal Survey of Feral Pig Ectoparasites in Three Texas Wildlife Districts." Thesis, 2011. http://hdl.handle.net/1969.1/ETD-TAMU-2011-12-10290.
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Feral pigs, European wild boars and their crosses are ubiquitous and found in all ecological zones from Florida to California. These introduced animals are recorded in 39 US states and four Canadian provinces. Texas currently has an estimated population of 1-4 million pigs with the potential to exceed 4 million based on suitable habitat estimates. Feral pigs can modify local flora and fauna and cause significant physical damage with their rooting activities. They can also reintroduce parasites and pathogens to previously parasite and pathogen free herds of domestic cattle, horses, sheep, and goats. The two overarching objectives of this research were to determine what role feral pigs have in the maintenance and possible distribution of fleas, lice, and ticks common to the three wildlife districts; and if they serve as bridging hosts for the same (or other) arthropods and their natural hosts. The supporting objectives were to establish host records of fleas, lice, and ticks parasitizing feral pigs; determine species assemblies within each of the three wildlife districts; and to compare species assemblies among the wildlife districts.
Feral pigs (564) were taken from June 2008 to March 2011 using box, corral, and panel traps in three wildlife districts. Two hundred fifty six fleas, Pulex porcinus (Jordan and Rothschild), were collected from all gender and age classes of feral pigs at the South Texas Plains wildlife district. No fleas were collected at either the Hill Country or Post Oak Savannah wildlife districts. This is the first report of these fleas on feral pigs. Lice and ticks were collected from all gender and age classes of feral pigs from all sample sites. Only hog lice, Haematopinus suis, were collected at all three sample sites. Seven species of ticks were collected from the three sites: Amblyomma americanum, A. cajennense, A. maculatum, Dermacentor albipictus, D. halli, D. variabilis, and Ixodes scapularis. Amblyomma cajennense was collected only at the South Texas Plains sample site; A. americanum and I. scapularis were collected only at the Hill Country and Post Oak sample sites. This study reports that feral pigs are serving as hosts for one species of flea, one species of lice and seven species of ticks common to Texas.
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Kuo-Lung, Hsu, and 許國龍. "A Narrative Study of Javelin Throw-- A Story of The National Javelin Thrower." Thesis, 2013. http://ndltd.ncl.edu.tw/handle/82725059630304234978.
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碩士國立臺中教育大學
體育學系碩士班
101
Athletes' body movements through day after day training, then the formation of physical memory, thus you can perform some kind of spontaneous kinesthetic state. Sports experience is not just a process, but life stories of athletes with sweat, tears and brainstorming relegated to. The researchers read the theme of cross-strait research for Javelin are committed to technology, training, and teaching Direction of mechanics, players rarely addressed the inner world of body experience and discussion. In this study, personal experience of javelin throwing as the theme, the study aims to investigate the application of sport experience and physical experience adjustment and control, and thus enhance athletic skills and stability, the unity of body and soul to achieve a better state. The point of view from this research goes through self-narrative which was described by first-person storytelling. The results shows that inner world of javelin thrower has a special meaning that is the stage of self-expression, a springboard for further studies, a relationship, a sense of fun and wild instincts from javelin throw. "Real experience," the importance of a javelin thrower for improved resilience, reflection and correction experience pain, self-styled shape, and self-fulfilling confidence. "Body experience" of javelin thrower for the body to enhance the value of the perceived sensitivity and resilience, the ability to enhance the feeling of comprehensive analysis, improve memory and physical force to develop the correct order to enhance the establishment of a comprehensive physical fitness and special fitness. This results suggest that while javelin coaches and players apply positive reinforcement training methods, they should pay attention to the application of players’ real experience and body experience to assist javelin thrower into "world of beauty" to create a "new javelin world." Keywords: javelin, sport experience, physical experience, narrative inquiry
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Costa, Flávia Rodrigues da. "The importance of IMU devices as a kinematic analysis complement in javelin throw." Master's thesis, 2020. http://hdl.handle.net/10348/9981.
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Master Thesis International Master in Performance Analysis of SportsIntroduction: The javelin throwing is a peculiar discipline in which the thrower intents to transfer the greatest acceleration from the run-up to the javelin at the instant of release. Javelin throw and biomechanics have kept a strong relationship, assisting on understanding its technique and its connection with performance outcomes. The present review aims to complete a deep overview of the studies related to javelin throw’s kinematic analysis, understand how javelin’s technical information has been assessed, and highlight future perspectives on kinematic tools for javelin’s evaluation. Methods: The PRISMA (Preferred Reporting Items for Systematic Reviews and Meta-Analyses) principles were followed in this review. PubMEd/MEDLINE, World Wide Science and IAAF’s research database. Results: Distance: Elite male=: 81.22 ± 4.01 m; Elite female= 60.98 ± 2.35 m; Non-elite male: 50.84 ± 13.6 m; Non-elite female: 34.83 m. Release Velocity: Elite male= 28.24 ± 0.87 m/s; Elite female= 23.53 ± 1.27 m/s; Non-elite male= 18.58 ± 4.33 m/s; Non-elite female= 17.42 m/s. Release Height: Elite male= 1.94 ± 0.08 m; Elite female= 1.82 ± 0.06 m; Non-elite male= 1.99 ± 0.13 m; Non-elite female= 1.89 m. Release Angle: Elite male: 34.38 ± 2.22º; Elite female: 35.52 ± 3.28 º; Non-elite male: 36.4º; Non-elite female: 44.2º. Conclusions: The release velocity is considered the most important parameter determining the distance thrown. The studies on javelin throwing use the video recording to analyze its kinematic parameters. Several parameters do not describe a linear efficiency tendency and show that diferente throwing techniques end out to be similarly effective.
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chen, chou yi, and 周宜辰. "Technical Analysis of Superior Javelin Athletes." Thesis, 2010. http://ndltd.ncl.edu.tw/handle/97528498991203269173.
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碩士國立臺灣師範大學
運動競技學系
98
Javelin throw hinges mainly on factors concerning the speed and angle of release, with its rhythm highly relying on kinetic movements. Purpose: The purpose is to pinpoint possible technical problems of superior athletes in their javelin throwing, thus enabling adjustments of skills and enhance overall performance. Method: The research object is a javelin champion from the National College Athletic Games. During the game, a high-speed camera was used to capture the athlete’s movements, which then underwent Kwon 3D analysis, yielding correlation parameter in kinematics. Descriptive statistics would then present kinematics differences. Results: Superior javelin athletes tend to have shorter step contact time on the field in all three last steps of throwing. The optimum throwing distance combine 33-37 degrees of throwing angle with the height of release ranging from 180 to 185 centimeters high. Step contact time and throwing angle cause main differences between foreign and domestic athletes, foreign athletes execute shorter step contact time and higher angle of release (lower than 45 degrees) compare to domestic athletes.
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Wang, Kuang-Hui, and 王光輝. "Wireless MEMS Sensors Applied in Javelin ThrowingMovement Analysis." Thesis, 2013. http://ndltd.ncl.edu.tw/handle/65916758392760218477.
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碩士樹德科技大學
資訊工程系碩士班
101
Objective: This research aims to analyze the difference between the javelin’s acceleration and angular velocity with regard to six main bodily joints when analysands throw javelins by using the measurement of wireless MEMS sensors. Subject：The analysands are divided into elite group and good group. The elite one are mainly athletes in university, four of whom hold javelins in their right hands (height 181±7.74 cm、weight 91.75±25.53kg, at the age of 22.5±4.0 years、and playing experience 7.75±2.16 year). As for the good group, they are mainly senior high school athletes, two of whom hold javelin in their right hands (height 170.5±5 cm、weight 81±9.89 kg、at the age of 18±0 years and playing experience 4±0.64 years). Methods：By using triaxial acceleration regulations and gyroscope which composes wireless MEMS sensors, I capture the resultant data of acceleration and angular velocity related to the six bodily joints when the analysands throw the javelins. Then I make the analysis with MS Excel and MatLab from the results of every experiments made by high-speed camera. Results: 1.From the distance in the course of throwing javelins, the flying time and angular measurement through the whole T examination analysis, I find that whether or not putting on the sensors does not influence the validity of technical operation. 2.The application of wireless sensors to the machine and bodily joints has nothing to do with professional performance of the athletes. The situation of gathering data when sensors are in the course of flying within adequate height and distance is also good. 3. The data generated through spectrum analysis and judged from acceleration and angular velocity, the average values of the elite group is better than those of good group. The elite group generates higher numbers of vibration compared to good group. The triaxial demonstration of acceleration and the number of vibration in the elite group is also higher than that of the good group. 4.The values gathered from the athletes’ bodily joints through the examination ANOVA proves the striking differences between acceleration and angular velocity. 5.The values gathered from atheletes’ bodily joints demonstrate striking discrepancy through the statistic analysis, acceleration, angular velocity, maximum values, average values, the total power and the comparative analysis of triaxial total power. Suggestions and Conclusions: 1.The influence of wireless sensors is less powerful than athletes’ technical performances. 2. Gathering the numeral analysis respectively from elite and good athletes can demonstrate the individuality of the athletes. 3. Wireless MEMS sensors can be applied to the athletic domain, becoming the tool system and methodology for the analysis of movement mechanics. 4. The results of this research can assist anyone who is involved in training to develop a reference model for training excellent athletes, and serves as a scientific basis for them.
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Čermák, Filip. "Komparace testových parametrů českých a světových oštěpařů." Master's thesis, 2016. http://www.nusl.cz/ntk/nusl-347645.
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Theme: The comparison of tests parameters of Czech and world javelin throwers Aim: To compare test batteries of Czech and world javelin throwers from the past to the present time. To characterize individual javelin schools in the world and point to the differences between these schools and compare them with a Czech javelin school. Methods: Our work is mainly focused on the method of comparison. We use this method in result to answer some scientific questions. It was compared 25 elite javelin throwers in total with their average performance 88,84m. For data analysis we used basic descriptive statistics to compare differences between Czech and world javelin throwers. Further, it was also used for the method of research focused on searching of professional publications, training diaries and we also used the method of interview/dialogs between their trainers and competitors to characterize javelin schools and get tests parameters. Results: We can see from gathered results that the Czech javelin school took a different way to achieve this sport performance. That fact was shown in test results. The results of general test batteries of world javelin throwers were higher/better in average than the results of Czech javelin throwers. But the results of special test batteries of Czech javelin throwers were...
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Wang, Cheng-Hung, and 王政鴻. "The analysis of the skill of throw in Javelin." Thesis, 2012. http://ndltd.ncl.edu.tw/handle/90345636287168006736.
Full textAbstract:
碩士國立體育大學
運動技術研究所
100
Abstract The purpose of this study was to use Rasch measurement to analyze the skill of throw in Javelin. The object of study: 18 players of javelin thrower from the National Sports University and the National Taoyuan High School. The research method divided the skill of throw in javelin into the grip, holdin, run-up, cross-step, throw out and buffer. Recoding the movement of throw in javelin skill then grade by five raters. This study used Rasch model to analyze four facts, athlete, rater, throwing trials and the skill of throw in javelin. The results: (1) Athletes facet: Rasch individual overall reliability was 0.99, and tests proved the measures to have validity and sample representation. (2) Raters facet: After the rater adjusted from five into four, it showed good consistency and representativeness. The inter-rater agreement was 94.1%. (3) Trials facet: The homogeneity test had no difference, and trials had representativeness. (4) Throwing skills facet: Rasch individual overall reliability was .99, and tests proved the measures to distinguish difficulty of throwing skills to have validity. The results of the normal tests to conform normal allotment, reasoned that throwing skills to have validity. Rasch measurement to agree with subjective rating to analyze the skill of throw in Javelin, the basic condition of subjective rating is consistence of raters. The final conclusion: Rasch measurement can objective quantitative to analysis of the skill of throw in Javelin by subjective rating. Keywords：Javelin, Rasch model, rater, throwing technique,many-facets Rasch model.
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Cheng, Jen-Hao, and 鄭人豪. "The analysis of balance in baseball pitchers and javelin throwers." Thesis, 2011. http://ndltd.ncl.edu.tw/handle/48348536488038947411.
Full textAbstract:
碩士國立嘉義大學
體育與健康休閒研究所
99
The purpose of this study was to investigate the static and dynamic balance in baseball pitchers and javelin throwers through three balance evaluation methods. 24 university male students were recruited in this study [12 college baseball pitchers (Age: 20.0±1.3; Height: 177.8±6.2; Weight: 77.5±8.2) and 12 college javelin throwers (Age: 21.4±2.0; Height: 180.2±5.8; Weight: 89.4±14.7) ]. The athletic single leg stability testing mode of the Biodex Balance System (BBS) was used to evaluate the dynamic (level 6) and static balance (level 12) and the Medial-lateral stability index (MLSI), Anterior-posterior stability index (APSI) and an Overall stability index (OSI) were measured. Also, the average radius, velocity and area of the center-of-pressure (COP) was measured using AMTI AccuSway force plate to evaluate the static balance in single-leg standing with eye-opened and eye-closed conditions. Simplified star excursion balance test (SEBT) was used to measure the subjects’ dynamic balance, and normalized reach distance in three directions were collected. The paired t-test was used to compare all the variables between trail leg and stride leg of baseball pitchers, propulsive leg and braking leg of javelin throwers. The independent t-test was used to compare trail leg of baseball pitchers with propulsive leg of javelin throwers and stride leg of baseball pitchers with braking leg of javelin throwers. Results: The APSI of level 6 and the normalized reach distance in posterolateral direction of the trail leg were significant better than the stride leg. No significant difference was found between the propulsive leg and braking leg in all the variables. The average radius and area of the COP during single-leg standing with eyes-opened conditions of the propulsive leg were better than the trail leg. It is concluded that both the baseball pitchers and javelin throwers demonstrate specific characteristics in balance control. There are no difference between the propulsive leg and braking leg of javelin throwers in dynamic and static balance performance. However, the dynamic balance performance of the trail leg is significantly better than the stride leg in baseball pitchers. The static balance performance of the propulsive leg of javelin throwers is also better than the trail leg of the baseball pitchers. The cause of these differences requires further study.
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Gu, Guo-Hong, and 古國宏. "The Biomechanical Analysis of the Two Levels of Javelin Throwers." Thesis, 2006. http://ndltd.ncl.edu.tw/handle/02374022148367613669.
Full textAbstract:
博士國立臺灣師範大學
體育學系
94
By analysis of the two levels of javelin throwers, the purpose of this study was: (1) To find the keys of throwing technique. (2)To make the general group better. All subjects are college throwers, the mean personal record of elite group is 68.04±5.68 m, and that of general group is 55.74±7.17 m. Two Redlake cameras (125 Hz) for throwing motion, and another two Redlake cameras (250 Hz) for javelin motion and a synchronized force plate (Kistler, 1250 Hz) were used to collect the data. The data were digitized by Kwon 3D software and smoothed by Butterworth 4th order with 6 Hz cut-off frequency. The 3D inverse dynamics was analyzed with the force applied to the javelin and in lower extremity. The results included: (1) The axial force of elite group (194.6±19.6 N) was significant larger than that of general group (147.81±18.54 N)。(2)The elite group had a significant larger left hip flexion than the general during throwing, and there was a significantly positive correlation between the shoulder angular velocity and flight distance. (3)The angle of left knee of the elite group (166.3±4.9 deg) was significantly larger than that of the general group(154.4±10.4 deg) while the left heel touched the ground. At the time of last left foot landing, right foot landing and release, the run-up speed of elite group was significantly faster than that of the general. (4) The vertical GRF was dramatically increase to the peak (about 2000~2200 N) just at the moment that the left heel touched the ground. According to the pattern of forward horizontal force of GRF, the javelin release occurred in the braking phase.
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Siang, Chen-Yu, and 陳宇湘. "Case Studies of Outstanding Domestic Decathlon Javelin Throwing Hand Movements of Players." Thesis, 2014. http://ndltd.ncl.edu.tw/handle/11435931076800296617.
Full textAbstract:
碩士育達科技大學
休閒事業管理系碩士班
102
The topic of this research is about the inspection and analysis of motion of Prime Decathlon Javelin player, using Biological motion analysis to measure the body dynamics parameters like leaved-hand throwing height, angle, velocity and acceleration. Based on those parameters, we can analyze and realize the difference between Prime Decathlon Javelin player and specialized player, and also find the solution to improve the technique of Prime Javelin player‘s throwing motion. In this thesis, our research object is a Prime Decathlon Athletics Player in Yu-Da University of Science and Technology, In addition to the throwing motion of this player, we use high-speed camera to collect and analyze the body dynamics parameters technically. This research finds out that Javelin player leaved-hand throwing height, instant angle and velocity are respectively 243 cm, 36°.4 and 391.38 m/sec,and the flight distance is directly related to the leaved hand angle and height. The best leaved hand angle range from 37 to 42°. In this research, the analysis data shows that the performance of Decathlon player is worse than specialized player.
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Chuang, Yi-hung, and 莊一鴻. "A Case Study of Javelin Skill Analyses of an Elite Athlete in Taiwan." Thesis, 2012. http://ndltd.ncl.edu.tw/handle/92690477529501135703.
Full textAbstract:
碩士臺北巿立體育學院
競技運動訓練研究所
100
Purpose: The purpose of the study was to analyze parameters of throwing skills and athletic performance of an elite javelin athlete in 2010. Parameters of release speed, release angle, and release height of javelin throwing were studied through biomechanical point of view. Methods: Subject of the study was the 2010 national javelin record holder Chao-Tsun Cheng. The software of SIMI 2D was utilized for movement analyses on release speed, release angle, and release height of javelin throwing, and EXCEL was utilized to obtain the means and standard deviations of the data. Results: Release speed, center speed and angle of the javelin before release, and center of mass speed and angel of the javelin were found to be the major factors affecting throwing performance. Parameters from the best throwing of 77.26m were not the most ideal values among 5 throws. No relationship was found between center of javelin and throwing result, and no relationship was found between center of mass speed and angle and throwing result. Mean release height of 1.42±0.01m revealed steady throwing skills. Conclusion: Among the six throws, the best result was the first throw of 77.26m with the fastest release speed of 27.28m/s revealing that release speed was determinant for throwing result. Release speeds of foreign throwers were better than Chao-Tsun Cheng. Center of mass angle after release was another determinant factor for throwing result, and the release angle of Chao-Tsun Cheng was lower than foreign elite throwers. Increasing release speed and stabilizing release angle were the main issues for better throwing performance.
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Tsai, Yen-Chun, and 蔡彥鈞. "Aerodynamic Analysis of Javelin Anti-Armor Missile in the Number of Different Wings." Thesis, 2014. http://ndltd.ncl.edu.tw/handle/82666926986788394486.
Full textAbstract:
碩士國防大學理工學院
機械工程碩士班
102
In this research, computational fluid dynamics was applied and low-speed wind tunnel experiments were performed to study the aerodynamic characteristics of lift and drag exhibited by a three-dimensional Javelin antiarmor missile. The missile had various numbers of wings (0,4,8, or 12 and a tail of 4) with Mach numbers ranging from 0.2 to 0.6 and angles of attack ranging from -5° to 5°. The types of missiles were denoted as BT, BW4T, BW8T, and BW12T, where B is the missile body, W is the wing, T is the tail, and the arabic numeral is the number of wings. The results indicated that when the fin did not swing, the drag coefficient of the number of fins increased. When the angle of attack increased, the drag coefficient also increased. When the angles of attack had the same positive and negative values, the drag coefficient values were symmetrical. A simulation indicated that the lift of the wing is the main lift source for the missile body; its lift coefficient increased linearly with the relationship between the angle of attack. When the number of fins was from 4 to 8, the rate increased. A higher number of fins (from 8 to 12) filmsincreased it significantly reduce lift. This study explored the reasons for the excessive number of pieces produced for the wing that generate interference. A comparison of BW8T and BW12T indicated that the lift and drag coefficient ratios of these missiles are nearly identical and greater than those of BW4T and BT. Therefore, the Javelin antiarmor missile in top attack mode works the most efficiently with 8 wings. The configuration in the present study indicated that four model types can reach more than 40° in the stall angle of attack. Because of hardware limitations, a low-speed wind tunnel that velocity was used in an incompressible flow test on four types of models. Considerations of fluid compressibility when the missiles flew at subsonic speeds, references to the PG and VT transformation formulas, and simulation results were derived to calculate the three-dimensional missile lift and drag coefficient transformation formula. The experimental transformation data and the simulation data were compared. The drag coefficient and lift coefficient errors were less than 1.5% and 10%, respectively. These results can be used to reduce the cost of future subsonic wind tunnel experiments. The methods used in this study were ideal and acceptable, and the contributions of this paper include a gradual improvement in research and development capabilities for antiarmor missiles. Keywords：Javelin antiarmor missile, computational fluid dynamics (CFD), low-speed wind tunnel, aerodynamic characteristics, compressibility
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Dolák, Marek. "Úspěchy českých a československých oštěpařů na olympijských hrách." Master's thesis, 2013. http://www.nusl.cz/ntk/nusl-323783.
Full textAbstract:
In my thesis I will focus on all the successes of Czech and Czechoslovak athletes at the Olympics in the javelin. I also want to briefly describe the history and development of this discipline. Furthermore, I will also describe modern technology of javelin and physiological description. Nevertheless, the main part will be about our Olympic heroes in this technically very demanding discipline. In this part, there will be mainly detailed course of the race at the Olympics, where they have had any success. My thesis will also include a biography of these prominent Athletes.
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Tsai, Cheng-Yu, and 蔡承祐. "The Understanding Game of Sport Techniques-a Hermeneutic Analysis of the Javelin Learning Process." Thesis, 2008. http://ndltd.ncl.edu.tw/handle/90660848003395585409.
Full textAbstract:
碩士國立臺灣師範大學
體育學系
96
The purpose of this study is to analyze the understanding process of sport techniques. It declares the importance of a learner’s state of situation and its interactions with the object in the process toward understanding. After the analysis of Schleiermacher’s and Gadamer’s hermeneutic theories, the researcher discovers that understanding is a circle of games which always involve our state of situation. That is reasonable that different understandings always occur and sometimes we can’t even understand—since our situation is always changing. Based on the discussion above, the researcher tried to narrate his own experience of javelin learning. The result shows that the whole process is not only a simple circle of games, but can be divided into four different and yet strongly connected circles. They exist in between different kinds of sport; parts and whole techniques; mind and body; also instructor and learner. Finally, to imply our conclusion above to sport teaching, training, and competition, the researcher suggests that sport instructor, learner, and competitor should take different attitude toward the understanding game in different situations. They should dare to play, refuse to play or even set a game others to play in order to achieve better learning or athlete performance.
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Lai, Ching-Lin, and 賴慶霖. "Excellent Domestic Players Kinematic Analysis of Men's Javelin- Case Study by Huang Shih Feng." Thesis, 2012. http://ndltd.ncl.edu.tw/handle/38095661047353026065.
Full textAbstract:
碩士輔仁大學
體育學系碩士班
100
This study researches Huang Shih-Feng, the excellent javelin thrower, whose velocity of the displacement of body gravity in the stage of run-up with cross steps and throwing, and change of some kinematic parameters, such as the release heights and angles, while hurling javelin. It is compared and analyzed with both domestic and foreign relevant literature, and furthermore, researches the throwing patterns beneficial to testees and good to discipline and adjustment which will be reference for instructors and players to improve throwing skills and training. In the investigation, two high-speed cameras (60HZ) are simultaneously used to shoot the processes of Shih-Feng's last three cross-steps of run-up and throwing motions during the practices a week before the competitions in National Intercollegiate Athletic Games, and then in order to get the kinematic parameters like the changes, speeds and angles of displacement of every joint and body gravity, the collected images are digitized through the Kwon 3D Motion Analysis System and Silicon Coach Motion Analysis System. Below is the result of researching the javelin throwing pattern of Huang Shih-Feng: First, Shih Feng's release angle is 17.6 degrees short of the China players' and foreign excellent players' while release height is about 19.63 cm (centimeters) short. However, there is small difference in each release angle and height between during his trial throws. His throwing stability oscillates little and he has tolerably steady throwing motions. Secondly, at the stage of the velocity of cross steps connecting throwing, too much gravity velocity loss results in obvious score differences between Shih-Feng and foreign excellent players. Thirdly, the release velocity of Shih-Feng is 6.98 m/s (meters per second) short of those of the China player and foreign excellent players. The discrepancy leads to slower initial velocity of hurling javelin and the laggard scores.
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Wang, Liang-Zhan, and 王良展. "Three-Dimension Analysis of Kinematics and 2D Model Simulationin the Motion of Javelin-Release." Thesis, 2003. http://ndltd.ncl.edu.tw/handle/ptgn27.
Full textAbstract:
碩士國立體育學院
教練研究所
90
Abstract Javelin-release use linear run-up and throw the javelin, using the different condition could to find the optimal performance in javelin-release. The aims of the study are analyze the correlation between the variables and the performance and the difference among the different levels athletes in the javelin-release. Then use the computer-simulation system to calculate the performance and fix the motion, to find the optimal releasing condition. The consequent will be used on the intra-national athletics in the future. The study used two high-speed cameras(60hz) recode and Ariel Performance Analysis System (APAS) to record and analyze the javelin-release moment., then used the Working Model 2D that simulation safewave to prophesy. Pearson’s product-moment correlation was used determine the correlation among variables, and Test of Independence was used to analyze the difference among the different levels athletes. The results were described as followed. 1. The release, wrist, elbow, shoulder, hip and center of mass velocities and release distance are significantly correlated. 2. The velocity-loss of c.g. and throwing-power transform are significantly correlated, the velocity-loss of c.g.and the release of velocity are significantly correlated. 3. The span of velocity could be on behalf of the optimal power in the release-javelin. 4. The span of time among the segments action and velocity of farther joints are significantly correlated. When the span be longer, the distance will be better. 5. The span of time that the segments action This is useful to rise the distance. But it isn’t useful to the angle of release.
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Pei, Kuo Tsai, and 郭采佩. "The Analysis of Javelin Throw Technique of Visual Defect Jiang Chi-Chong－A Case Study." Thesis, 2006. http://ndltd.ncl.edu.tw/handle/31282046788301762363.
Full textAbstract:
碩士中國文化大學
運動教練研究所
95
The main purpose of this study was to analyze the javelin throw technique by using biomechanical methods on the javelin throw of disabled athlete Chi-Chong Jiang. The analysis responses of the factors in parameter were velocity of the upper limb, and the movement pattern of body center of mass. Our data compared with the reference of the Olympic javelin throwers in 1984 by Komi & Melo(1994). The main conclusion were: 1. The release speed of javelin throw is a dominant factor on performance. The results revealed that the present subject had an analogous release speed with compare to the normal elite athletes. However, the performances of them were quite different. This could be speculated that other factors of release, such as release angle, attitude angle of javelin and their combination with wind conditions may have a great deal to the throw distance. The movement pattern of body center of mass for Jiang Chi-Chong was smoothing, but on the other hand, due to deficit of leg extension muscles, the movement amplitude was considerably greater than elite athletes during the final foot contact. 3. The sequential action of segments of throwing arm was observed in Jiang Chi-Chong’s throwing, in which the movements were initiated by the large, proximal segment and continued by the smaller and more distal segment in order to increase the speed of javelin.
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Jhong, Ye Yao, and 葉耀中. "The Kinematic Analysis on Release Speed and Left Support Leg of Excellent Domestic Male Javelin throwers." Thesis, 2013. http://ndltd.ncl.edu.tw/handle/52008012981673968298.
Full textAbstract:
碩士輔仁大學
體育學系碩士班
101
Abstract The main purpose of this research is about study in release speed and the last knee angle of the left support leg; moreover, a crucial factor to connect the whole movement of javelin throwing process lies in the final step of release from the hand. The research focuses on the change of some kinematic parameters by superior javelin athletes in Taiwan to compare and analyze with both domestic and foreign relevant researches, in addition, find out the throwing problems and then discuss the way conducive to testees throwing motion mode in order to facilitate training and adjustment. This study researched the excellent javelin thrower, Huang Shih-Feng, as a case; and uses the high-speed camera (120HZ) to collect his movements. Besides, by Kwon 3D to analyze the whole collections and the kinematic parameters; the investigation shows the changes of kinematic in descriptive statistics. The following is the result of researching the javelin throwing mode of Huang Shih-Feng: First, the average release speed of Huang Shih-Feng is 23.14 m / s, but the average release speed of both domestic and foreign superior throwers is 29.17 m/s; however, to compare both results, the gap between Huang Shih-Feng and other superior throwers is 6.03m/s. It shows that the release speed is too slow to make the different results between Huang Shih-Feng and other superior throwers. It is worth people thinking to enhance muscular strength, muscular endurance and core muscle training in the training process in Taiwan. Second, the average of last knee angle of the left support leg, when Huang Shih-Feng’s foot touched on the ground, is 154 degrees, but the average of last knee angle of the left supporting leg by Track and Field National Championship superior throwers, when foot touched on the ground, is 170 degrees; however, to compare two results, the gap between Huang Shih-Feng and other superior throwers is 16 degrees. It shows that the last knee angle of the left support leg is too bent to influence the release speed and to make the different results between Huang Shih-Feng and other superior throwers. Keywords: Release speed, Angle of the support leg, Javelin Throw Total pages: 48 pages
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Liang, Geng-Jin, and 梁耿縉. "The Effect of different Consciousness Message on the Blind of Skill Learning of Javelin Throw Technique." Thesis, 2008. http://ndltd.ncl.edu.tw/handle/43833886686169910485.
Full textAbstract:
碩士中國文化大學
運動教練研究所
96
This research is to investigate the effect of traditional teaching group and multi-consciousness message teaching group on the blind of skill learning on javelin throwing technique. This research adopts 18 subjects (man:16, female:2), they are all-blind students from Junior and Senior high school department in National Taichung Gi-Ming school; average age: 15.77±1.47(yr) ,average height: 164.41±8.14（cm）, average weight: 70.93±16.27（kg）. According to the sex and age of the school, subjects are stratified and randomly assigned into two groups, including traditional teaching group (oral teaching, action teaching, KR) and multi-consciousness message teaching group (oral teaching, action teaching, KR, acoustic message, muscular message), each group contains 9 people. Before the official experiment, the subjects accept the first text of javelin throwing, and then undertake 8-weeks of javelin throwing program of group teaching, 2 times a week, after accepting the final text and the text of retention effect, and two weeks later stops training. On the experiment design, the teaching group and the text levels are experimental variables; the skill performance on javelin throwing dependents on variable. Data of the performance were analyzed by repeated measures two-way ANOVA (using Bonferroni pairwise comparison). The result revealed that: 1. Traditional teaching group only provides the blind for oral teaching, action teaching on the motor skill and KR message, is not able to efficiently promote the skill performance and the retention effect. 2. Multi-consciousness message teaching way, contains not only the traditional teaching idea, but more efficiency to use acoustic and muscular message, help the blind understand the movement, main point and the wrong of revision. Therefore, multi-consciousness message teaching group could obtain the remarkable results of promotion on the skill performance and the retention effect.
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Cheng, Shu-Chen, and 鄭淑真. "The research of the grades influenced by the training with the different anxiliary appliances to the track and field javelin throwers." Thesis, 2012. http://ndltd.ncl.edu.tw/handle/96769377072254626651.
Full textAbstract:
碩士樹德科技大學
經營管理研究所
100
There are new methods to train the track and field javelin contestants with the time progress,therefore the grades and record promote day by day.The main factor to influence the grades of the javelin thrower is the contestant’s fundamental action and application in the javelin equipment.The main purpose of the research is discussing the anxiliary appliances like the tubing and the medicine ball how to effect the grades of the javelin thrower. The experiment is to use the tubing or the medicine ball to train the javelin thrower in order to increase the thrower’s explosiveness and quickness and thews when the javelin throws.Then the javelin thrower tries to throw in –situ.We measure and record the data before and after training with the tubing or the medicine ball.Through the analysis of the comparision by T-test with the paired samples to discuss the results with the different training methods.Form the discussion,we get the conclusion.First,with different auxiliary appliances, the track and field javelin has different grades.Through the training with auxiliary appliances in 16 weeks,the average grade with the tubing is 49.08 m.The progress in grade is a little obvious.The average grade with the medicine ball is 50.98m.The progress is most obvious.The average grade with no auxiliary appliance is 49.42m..The progress is more obvious.Although three grades are all obvious,the progress after training with the medicine ball is growing most obviously.Second,the effects made by the training with different anxiliary appliances all progress obviously,especially the training with the medicine ball.
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Romero, Melvin. "Les armes de jet d’Argilos : catalogue typologique." Thèse, 2015. http://hdl.handle.net/1866/15858.
Full textAbstract:
Quelques sites archéologiques comme Olympie, Stymphalos et Olynthe possèdent respectivement un répertoire faisant l’étude des armes de jet retrouvées durant une série de campagnes de fouilles archéologiques. Parmi ces indexes, figurent fréquemment des pointes de flèche, des balles de fronde et des saurotères (contrepoids de lance ou de javelot) provenant de différentes périodes historiques gréco-romaines. À travers les 20e et 21e siècle de notre ère, des spécialistes comme D. Robinson (1931), A. Snodgrass (1964), H. Baitinger (2001), C. Hagerman (2014) dédièrent une partie de leur expertise pour produire des synthèses sur ces objets jadis négligés. Ainsi, ils parvinrent à créer de grandes encyclopédies commentées composées de projectiles retrouvés en sol grec. À l’aide de ces bases de données, les archéologues militaires sont en mesure d’établir des datations et l’origine prétendue de certains types de projectiles.
Jusqu’en 2015, les artéfacts militaires trouvés sur le site archéologique d’Argilos n’avaient jamais fait l’objet d’une étude de synthèse. D’abord, inspiré par de publications semblables, ces projectiles furent soumis à un inventaire sous forme de catalogue. Au total, deux types de balles de fronde en plomb, onze types de pointes de flèche et un type de saurotère furent identifiés. Finalement, ce nouveau contenu fut assujetti à des analyses comparatives avec d’autres sites archéologiques possédant des données similaires. Les conclusions découlant de ces analogies donnèrent naissance à la première typologie des armes de jet argilienne.
Certes, les analyses se heurtèrent à certains obstacles, notamment à une compréhension de la quasi-inexistence d'une pointe de flèche typiquement "grecque" et à la confusion systématique quant à la distinction entre un saurotère et une pointe de javelot, voire possiblement un carreau de gastraphétès (une sorte d’arbalète imposante utilisée lors de sièges durant le 4e siècle av. J.-C.). En partie, ceci découle de l'historique d'échanges entre la Grèce et les autres peuples méditerranéens, balkaniques et orientaux. En outre, de nombreuses réformes militaires des périodes archaïque et classique provoquèrent une évolution constante sur les aspects stratégiques et les tactiques militaires. Considérant ces facteurs parmi tant d'autres et le fait qu'Argilos ait été une fondation grecque en territoire thraco-macédonien, la possibilité d'influence "étrangère" devient alors prépondérante sur la typologie des projectiles argiliens publiée dans le présent mémoire. Avec beaucoup d’espoir, nous croyons sans équivoque que ce travail de recherche contribuera grandement non seulement à l’histoire d’Argilos, mais aussi à l’étude des projectiles en Grèce du nord.Archaeological sites such as Olympia, Stymphalos and Olynthus have complete catalogs that studied projectile-style weaponry found in a series of archaeological excavations. These so-called directories frequently include arrowheads, lead sling bullets and sauroters (spear or javelin counter-weights) from different Greco-Roman periods. Through the 20th and 21th centuries AD, specialists such as D. Robinson (1931), A. Snodgrass (1964), H. Baitinger (2001) and Haggerman (2014) dedicated some of their expertise to produce synthesises of these formerly ignored objects. Thus, they created some of the biggest commented encyclopaedias composed solely of projectiles found on Greek soil. Until 2015, all the weaponry found on the archaeological site of Argilos had never been the subject of a synthesis study. Firstly, inspired by similar studies, the projectiles were inventoried in a catalog format. In total, two types of lead sling bullets, eleven arrowhead types and one sauroter type were identified. Lastly, this new content was subjected to comparative analyses with sites containing similar data. The resulting conclusions from these analyses gave birth to the first Argilian weapon typology. Needless to say, the analyses ran into obstacles. In particular, the comprehension that there is almost no existence of a typical Greek arrowhead type and the systematic confusion when one has to distinguish a sauroter, a javelin head, and possibly a gastrasphetes bolt (a heavy large-sized crossbow used during sieges in the 4th century BC). In part, this stems from the historical exchanges between Greece and other Mediterranean, Balkan and oriental civilizations. Furthermore, many of the archaic and classical military reforms brought about a constant evolution on strategic and tactical matters. Considering these factors, among others, and the fact that Argilos was a Greek colony within a Thraco-macedonian territory, the possibility of foreign influence becomes predominant on the typology published in this present thesis. With much hope, we believe without a doubt that this work of research will contribute not only to the history of Argilos but also to the study of military projectiles in Northern Greece.