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Search Results: 1 - 10 of 219998 matches for " C. Aydin "
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Solitary synovial osteochondroma of the knee: mimicking a giant loose body
Aydin N, Gokkus K, Topal C, Aydin AT
International Medical Case Reports Journal , 2012, DOI: http://dx.doi.org/10.2147/IMCRJ.S35894
Abstract: litary synovial osteochondroma of the knee: mimicking a giant loose body Case report (808) Total Article Views Authors: Aydin N, Gokkus K, Topal C, Aydin AT Published Date November 2012 Volume 2012:5 Pages 83 - 86 DOI: http://dx.doi.org/10.2147/IMCRJ.S35894 Received: 12 July 2012 Accepted: 28 August 2012 Published: 01 November 2012 Nuri Aydin,1 Kemal Gokkus,2 Cumhur Topal,1 Ahmet Turan Aydin2 1Uskudar State Hospital, Istanbul, Turkey; 2Memorial Antalya Hospital, Antalya, Turkey Abstract: Solitary synovial osteochondromas are rarely seen. Usually arising from the juxta-articular soft tissues without attaching to the bone, these lesions can be large and show clinical and radiological features of a malignant process. This report is about a 64-year-old woman with no history of trauma. She had a history of dull pain and a progressive limited range of motion that had been ongoing for 3 years. An unusual presentation of an uncommon disease that is not widely known by orthopedic surgeons is reported.
Solitary synovial osteochondroma of the knee: mimicking a giant loose body
Aydin N,Gokkus K,Topal C,Aydin AT
International Medical Case Reports Journal , 2012,
Abstract: Nuri Aydin,1 Kemal Gokkus,2 Cumhur Topal,1 Ahmet Turan Aydin21Uskudar State Hospital, Istanbul, Turkey; 2Memorial Antalya Hospital, Antalya, TurkeyAbstract: Solitary synovial osteochondromas are rarely seen. Usually arising from the juxta-articular soft tissues without attaching to the bone, these lesions can be large and show clinical and radiological features of a malignant process. This report is about a 64-year-old woman with no history of trauma. She had a history of dull pain and a progressive limited range of motion that had been ongoing for 3 years. An unusual presentation of an uncommon disease that is not widely known by orthopedic surgeons is reported.Keywords: solitary synovial osteochondroma, loose body, arthroscopy, knee joint, synovial chondromatosis
Usage of Underground Space for 3D Cadastre Purposes and Related Problems in Turkey
Cevdet C. Aydin
Sensors , 2008, DOI: 10.3390/s8116972
Abstract: Modern cities have been trying to meet their needs for space by using not only surface structures but also by considering subsurface space use. It is also anticipated that without planning of underground spaces for supporting surface city life in the years and generations to come, there will be serious and unavoidable problems with growing populations. The current Turkish cadastral system, including land right registrations, has been trying to meet users’ needs in all aspects since 1924. Today Turkey’s national cadastre services are carried out by the General Directorate of Land Titles and Cadastre (TKGM). The Cadastre Law, Number 3402, was approved in 1985 to eliminate problems by gathering all existing cadastral regulations under one law and also to produce 3D cadastral bases to include underground spaces and determine their legal status in Turkey. Although the mandate for 3D cadastre works is described and explained by the laws, until now the bases have been created in 2D and the reality is that legal gaps and deficiencies presently exist in them. In this study, the usage of underground spaces for the current cadastral system in Turkey was briefly evaluated, the concept of 3D cadastral data is examined and the need for using subsurface and 3D cadastre in addition to the traditional 2D register system, related problems and registration are mentioned with specific examples, but without focusing on a specific model.
Determination of Some Physical and Mechanical Properties of Pea (Pisum sativum L.) Seeds
M. Paksoy,C. Aydin
Pakistan Journal of Biological Sciences , 2006,
Abstract: In the present study some physical properties of pea seeds at different moisture content (4.47 to 61.23%) were estimated. The results revealed that mean values of seed length, width, thickness, geometric mean diameter, sphericity, seed weight and volume were 9.42, 6.71, 7.42, 8.43 mm, 85.0%, 0.32 g and 0.20 cm3, respectively. As moisture content increased from 4.47 to 61.23%, true density, porosity, projected area and terminal velocity were raised from 1480 to 1990 kg m-3, 62.0 to 75.0%, 52.34 to 91.46 mm2 and 7.67 to 9.75 m sec-1, respectively. Furthermore, bulk density was decreased from 600 to 490 kg m-3 for the same moisture content range.
THE USE OF VIRTUAL ETHNOGRAPHY THE USE OF VIRTUAL ETHNOGRAPHY
Kadriye UZUN,C. Hakan AYDIN
The Turkish Online Journal of Distance Education , 2012,
Abstract: 3D virtual worlds can and have been used as a meeting place for distance education courses. Virtual worlds allow for group learning of the kind enjoyed by students gathered in a virtual classroom, where they know they are in a communal space, they are aware of the social process of learning and are affected by the presence and behaviour of their fellow students and tutor.Traditional ethnography has been adjusted to virtual environments and much research on this issue has been carried out under the umbrella of virtual ethnography. The increase in diverse Internet applications can be pointed out as the cause of this inclination and increase.In this study, the authors explain the method of virtual ethnography in detail, inform about data gathering instruments such as participatory virtual observation, online and offline (face to face) interviews touch upon ethical questions related to field studies and highlight the elements that call for attention in the use of virtual ethnography in distance education studies.
Some Criteria for the Asymptotic Behavior of a Certain Second Order Nonlinear Perturbed Differential Equation  [PDF]
Aydin Tiryaki
Advances in Pure Mathematics (APM) , 2012, DOI: 10.4236/apm.2012.25048
Abstract: In this paper we give sufficient conditions so that for every nonoscillatory u(t) solution of (r(t)ψ(u)u')'+Q(t,u,u'), we have lim inf|u(t)|=0. Our results contain the some known results in the literature as particular cases.
Software Competences of Geomatic Engineering  [PDF]
Serkan Aydin
International Journal of Geosciences (IJG) , 2015, DOI: 10.4236/ijg.2015.612102
Abstract: In this paper, it is both intended to effectively transfer and emphasize the relationship between geospatial data and software applications while presenting the learning activities which required software competences and presented some software techniques related with geomatic engineering. Effective software competence in geomatic is required for both the combination of information-communication technologies and interdisciplinary collaborative learning activities. The essential way to keep up with future competences is adaptation to different types of information technologies. Today, it is obviously seen that the using of interest-activated technology is a sine qua non condition of engineering education. The main focusing point of this paper is to present some learning suggestions while developing a software related course content in Geomatic to empower engineering education.
Analytical solutions of the Klein-Fock-Gordon equation with the Manning-Rosen potential plus a Ring-Shaped like potential
A. I. Ahmadov,C. Aydin,O. Uzun
Physics , 2014, DOI: 10.1142/S0217751X1450002X
Abstract: In this work, on the condition that scalar potential is equal to vector potential, the bound state solutions of the Klein-Fock-Gordon equation of the Manning-Rosen plus ring-shaped like potential are obtained by Nikiforov-Uvarov method. The energy levels are worked out and the corresponding normalized eigenfunctions are obtained in terms of orthogonal polynomials for arbitrary $l$ states. The conclusion also contain central Manning-Rosen, central and non-central Hulth\'en potential.
Preservice Science Teachers’ Views on Usability of Anologies n Science Courses and Their Examples
Erhan EK?C,Fatma EK?C,Fatih AYDIN
Journal of Kirsehir Education Faculty , 2007,
Abstract: The role of analogy in learning has been extensively investigated in science education. In these researches, using of the strategy in the several approaches has been emphasized with advantages and disadvantages. The analogies that to be an important learning and teaching tool, play important role on learning and developing ofscientific ideas and concepts. The most important purpose of the using analogy is to be developed the understanding of abstract cases (phenomenon) by utilizing from concrete examples.This study, includes pre-service science teachers’ views on usability of analogies in science courses and preparation analogy based syllabus in pre-study and post-study and the investigation of analogy examples which is exactly generated by themselves on the based of context and characteristic and category during the 8 weeks period.On the beginning of the study, major information and sources was provided for the participants. The theme hasbeen comprehensively discussed and has been done brain-storming in the meeting which has been done after theirinvestigations.Interviews was done with participants in the before and after the study. On the result of this interviews when the views that had been remarked and analogy based syllabuses was investigated and analyzed, it has been appeared that pre-service science teachers have fairly got conscious and have developed positive attitude about usage ofanalogy.
FEM-BEM Coupling for the MHD Pipe Flow in an Exterior Region  [PDF]
S. Han Aydin
Open Journal of Fluid Dynamics (OJFD) , 2013, DOI: 10.4236/ojfd.2013.33023
Abstract:

In this study, the magnetohydrodynamic (MHD) flow through a circular pipe under the influence of a transverse mag- netic field when the outside medium is also electrically conducting is solved numerically by using FEM-BEM coupling approach. The coupled partial differential equations defined for the interior medium are transformed into homogenous modified Helmholtz equations. For the exterior medium on an infinite region, the Laplace equation is considered for the exterior magnetic field. Unknowns in the equations are also related with the corresponding Dirichlet and Neumann type coupled boundary conditions. Unknown values of the magnetic field on the boundary and for the exterior region are obtained by using BEM, and the unknown velocity and magnetic field inside the pipe are obtained by using SUPG type stabilized FEM. Computations are carried for very high values of magnetic Reynolds numbers Rm1, Reynolds number Re and magnetic pressure Rh of the fluid. The results show that using stabilized method enables us to get stable and accurate numerical approximations consistent with the physical configuration of the problem over rough mesh which also results a cheap computational cost.

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