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    EVALUATION OF BEACH PROFILE CHANGES BY USING TERRESTRIAL LASER SCANNER
    (PARLAR SCIENTIFIC PUBLICATIONS (P S P), 2017) Koroglu, Aysun; Seker, Dursun Z.; Kabdasli, M. Sedat; Karabork, Hakan; Goktepe, Ayhan; Varol, Evren; Bayram, Bulent
    Experimental investigations of coastal erosion generated by the action of irregular waves were carried out in laboratory flumes. It is well known that both the field surveys and the experimental studies are not precise enough to give details about the suspended sediment load due to wave action. In this study, different wave groups were generated over the beach profile and the amount of coastal erosion were measured using terrestrial laser scanner. Then obtained results were compared with the results gathered by means of conventional instruments. It was concluded that comparing to the conventional methods, laser scanners can be effectively used to define the beach profile changes under wave actions.
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    Evaluation of Three-Dimensional Motion Analysis of the Upper Right Limb Movements in the Bowing Arm of Violinists Through a Digital Photogrammetric Method
    (SCIENCE & MEDICINE INC, 2009) Yagisan, Nihan; Karabork, Hakan; Goktepe, Ayhan; Karalezli, Nazim
    Violin is one of the most widely taught string instruments in the world. The positions of the right tipper arm, elbow, and wrist and the vertical inclinations of the arm and forearm differ among violin players. The objective of this study was to measure the angular changes in the wrist and elbow joints, as well as the vertical inclinations of the arm, forearm, and hand, which are active in basic bow drives in violin playing, by using digital photogrammetric methods. In this way, we could determine the angular changes of the joints during bow drives, allowing Lis to incorporate this information into reaching proper bow techniques as well as preventing possible problems due to excessive force. This study involved nine Male University violin players. Certain anatomic areas were marked oil the players for measurement. The wrist and elbow joints of the right upper extremity were filmed on a calibrated test field using a metric camera, and images were transferred to the computer for photogrammetric evaluation using Pictran software (Technet GmbH, Germany). The angles of the elbow and wrist as well as the vertical inclinations of the arm, forearm, and hand of the right arm were ascertained from these marks on the photographs. The study showed that there are significant interindividual differences in the angular changes and inclinations on the E string and in the vertical inclinations on all strings among the different players. Med Probl Perform Art 2009; 24: 181-184.
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    Joint angles during successful and unsuccessful tennis serves kinematics of tennis serve
    (TURKISH JOINT DISEASES FOUNDATION, 2009) Goktepe, Ayhan; Ak, Emre; Sogut, Mustafa; Karabork, Hakan; Korkusuz, Feza
    Objectives: The aim of this study was to investigate the joint angle differences in successful and unsuccessful tennis serves of junior tennis players. Patients and methods: Nine healthy junior tennis players (5 girls, 4 boys; mean age 11.8 +/- 0.8 years; height 153.6 +/- 7.2 cm; body mass index 42.3 +/- 4.1 kg; playing experience 6.2 +/- 1.5 years) volunteered to participate in this study. They were asked to perform tennis serves as fast as they can as if they were in an actual game. Successful and unsuccessful serves were recorded using two high speed cameras and then analyzed using Pictran software. Angle changes in pre-impact, impact and post-impact phases were compared. Results: The results of paired sample t-tests revealed nosignificant differences between successful and unsuccessful tennis serves in all three phases. Conclusion: This study failed to show differences between successful and unsuccessful tennis serves in pre-impact, impact and post-impact phases. However, future research with more detailed analyses would be needed to reveal the possible changes in the joints while serving.