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Search Results: 1 - 10 of 503 matches for " Ferhat; Turan "
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Türkiye’de E-Beyanname Sisteminin Benimsenmesi: Geli tirilmi Teknoloji Kabul Modeli le Ampirik Bir al ma = Adoption of e-Declaration System in Turkey: An Empirical Assessment with The Extended Technology Acceptance Model
Aykut Hamit TURAN,Ferhat Ba?kan ?ZGEN
Dogus University Journal , 2009,
Abstract: In this study, modern application of Information and Communication Technologies (ICT)’s in Turkish Tax Management System has been investigated and the major reason behind technology adoption behaviors of Certified Public Accountants (CPAs) has been assessed by using Extended Technology Acceptance Model (E-TAM). The study first discusses electronic tax declaration system, and then empirically tests acceptance levels of CPAs by using Structural Equation Modeling. The study employs socio psychological theories to assess individual attitudes and perceptions of technology adoption process of CPAs. Although there are number of studies in international literature on adoption of electronic tax declaration systems, very limited empirical studies exist in Turkish literature.
Prevalence and Distribution of Sesamoid Bones of the Hand: A Radiographic Study in Turkish Subjects
Kose,Ozkan; Guler,Ferhat; Turan,Adil; Canbora,Kerem; Akalin,Serdar;
International Journal of Morphology , 2012, DOI: 10.4067/S0717-95022012000300055
Abstract: the purpose of this study was to examine the plain anteroposterior radiographs of the hands in turkish subjects in order to determine the prevalence of sesamoid bones and their distribution. a total of 923 hand radiographs from 459 men and 464 women with a mean age of 43.76±14.8 years (range, 18-85 years) were examined. two sesamoid bones (ulnar and radial) were always present at the metacarpophalangeal (mcp) joint of the thumb (100%). one sesamoid bone in the thumb interphalangeal (ip) joint was observed in 21.3% of the cases. the prevalence of sesamoid bone of the index and little mcp joint were 36.6% and 53.2% respectively. sesamoid bones palmar to the mcp joints of the middle finger and ring finger were rare; the incidence for these locations being 1.3% (12 hands) and 0.9% (8 hands), respectively. there were no significant differences between left and right hand digits. the distribution of sesamoid bones in different locations between male and female subjects were statistically similar in 1st ip joint (p=0.530), 4th mcp (p=0.631), 5th mcp (p=0.067) joints. however, the sesamoid bones in 2nd mcp and 3rd mcp joints were statistically more frequent in female subjects (p=0.024 and p=0.018 respectively). the present study represents the first report on the prevalence and distribution of sesamoid bones in the hand in turkish subjects. the prevalence of sesamoid bones in turkish population is considerably different from the africans and europeans, but rather resembles mediterranean and arab populations.
Prevalence and Distribution of Sesamoid Bones of the Hand: A Radiographic Study in Turkish Subjects Prevalencia y Distribución de los Huesos Sesamoideos de la Mano: Un Estudio Radiográfico en Sujetos Turcos
Ozkan Kose,Ferhat Guler,Adil Turan,Kerem Canbora
International Journal of Morphology , 2012,
Abstract: The purpose of this study was to examine the plain anteroposterior radiographs of the hands in Turkish subjects in order to determine the prevalence of sesamoid bones and their distribution. A total of 923 hand radiographs from 459 men and 464 women with a mean age of 43.76±14.8 years (range, 18-85 years) were examined. Two sesamoid bones (ulnar and radial) were always present at the metacarpophalangeal (MCP) joint of the thumb (100%). One sesamoid bone in the thumb interphalangeal (IP) joint was observed in 21.3% of the cases. The prevalence of sesamoid bone of the index and little MCP joint were 36.6% and 53.2% respectively. Sesamoid bones palmar to the MCP joints of the middle finger and ring finger were rare; the incidence for these locations being 1.3% (12 hands) and 0.9% (8 hands), respectively. There were no significant differences between left and right hand digits. The distribution of sesamoid bones in different locations between male and female subjects were statistically similar in 1st IP joint (p=0.530), 4th MCP (p=0.631), 5th MCP (p=0.067) joints. However, the sesamoid bones in 2nd MCP and 3rd MCP joints were statistically more frequent in female subjects (p=0.024 and p=0.018 respectively). The present study represents the first report on the prevalence and distribution of sesamoid bones in the hand in Turkish subjects. The prevalence of sesamoid bones in Turkish population is considerably different from the Africans and Europeans, but rather resembles Mediterranean and Arab populations. El objetivo de este estudio fue examinar radiografías anteroposteriores de manos en sujetos turcos para determinar la prevalencia y distribución de los huesos sesamoideos. Fueron examinadas 923 radiografías de mano, 459 hombres y 464 mujeres, con edad media de 43,76 ± 14,8 a os (rango, 18-85 a os). Dos huesos sesamoideos (ulnar y radial) estuvieron siempre presentes en la articulación metacarpofalángica (MCF) del primer dedo de la mano (100%). Un solo hueso sesamoideo en la articulación interfalángica (IP) del primer dedo de la mano se observó en el 21,3% de los casos. La prevalencia del hueso sesamoideo, índice y articulación MCP fueron fue de 36,6% y 53,2% respectivamente. Los huesos sesamoideos palmares a las articulaciones metacarpofalángica del dedo medio y dedo anular eran poco frecuentes, su incidencia fue 1,3% (12 manos) y 0,9% (8 manos), respectivamente. No hubo diferencias significativas entre los dígitos izquierdos o derechos. La distribución de los huesos sesamoideos en diferentes lugares entre los sujetos de ambos sexos fueron estadísticamente
The Effects of Dimension Ratio and Horizon Length in the Micropolar Peridynamic Model  [PDF]
Y. Ferhat, I. Ozkol
Engineering (ENG) , 2011, DOI: 10.4236/eng.2011.36071
Abstract: The aim of this study is to investigate the effects of horizon selection on the elastic behaviour of plate type structures in the micropolar peridynamic theory. Plates with various lengths and widths have been investi-gated using micropolar peridynamic model for different horizon selections. The mathematical model of plates has been provided applying the micropolar peridynamic theory and solution of this model has been obtained by finite element methods. The displacement fields have been computed for the different horizons and dimension ratios of plates. To compute the displacement field a program code has been developed by using the software package MATHEMATICA. The results obtained have been compared with the analytical solution of the classical elasticity theory and with the solution of displacement based finite element methods. For displacement based finite element method solution the software package ANSYS has been used. Ac-cording to results it has been observed that the displacement fields of the plates are strongly affected by ho-rizon selection. Therefore a question raises that which horizon length should be used with the problem in hand or is there any method to find the appropriate/best horizon length.
Simulation Topographical Surfaces Geographical and Geological Using Differential Geometry  [PDF]
Mohammedi Ferhat, Bensaada Said
International Journal of Geosciences (IJG) , 2011, DOI: 10.4236/ijg.2011.24070
Abstract: By applying differential geometry to analogue models developed such a model is calculated for the geometrical shape. Dip measurements are critical data for geologists, and in particular for structural studies. They enable quantifying geologic features observed across the surface in order to model the sub-surface. Dip measurements are provided by direct or indirect sources: geological maps, fieldwork data, Digital Elevation Model (DEM). This quantification then allows for comparison of such models to measured field data and supplants the use interferometry Radar describes and compares 3-D deformations. This example supplements and is based on the material found in L.S.S.I.T. Theory as well as some of the experimental results with the new method are delineated.
What Is Exactly the Scope of Nuclear Chemistry and Its Educational Position between Other Chemistry Branches  [PDF]
Turan ünak
Advances in Chemical Engineering and Science (ACES) , 2017, DOI: 10.4236/aces.2017.71006
Abstract: The undergraduate chemistry programs of different universities across the world show clearly that nuclear chemistry education doesn’t have a permanent status in chemistry curricula like classical sub-branches of chemistry which means like organic, inorganic, analytical, physical, and biochemistry. Before starting the evaluation of the status of nuclear chemistry education, first of all, nuclear chemistry should correctly be defined and its position in chemistry education programs should correctly be determined. In addition, a confusion of terminology or at least, a terminological turbulence exists in this branch of chemistry about the use of terms such as nuclear chemistry, radiochemistry, nuclear and radiochemistry. Also, the scopes of the expressions used in this field such as radiochemistry, radiation chemistry, radiopharmaceutical chemistry, etc. should be exactly defined and the realtions between them should be clearly understood. Breifly, nuclear chemistry may be difined as a large umbrella which covers all chemical studies related to radioactive materials and nuclear radiation including the fine sub-branches such as radiochemistry, radiation chemistry, radioanalytical chemistry, radiopharmaceutical chemistry, environmental radiochemistry. If these are not done, the educational problems in nuclear chemistry could not be correctly investigated and the remedies could not be correctly determined.
Influence of Residual Basal Area on Longleaf Pine (Pinus palustris Mill.) First Year Germination and Establishment under Selection Silviculture  [PDF]
Ferhat Kara, Edward F. Loewenstein
Open Journal of Forestry (OJF) , 2015, DOI: 10.4236/ojf.2015.51002
Abstract: Even-aged silvicultural methods have been successfully used to manage longleaf pine (Pinus palustris Mill.) forests for wood production; however, successful use of uneven-aged methods to manage this ecosystem is less well documented. In this study, the effects of varying levels of residual basal area (RBA) (9.2, 13.8, and 18.4 m2·ha-1) on longleaf pine germination and establishment under selection silviculture marked using the Proportional-B method were observed. In addition to RBA, photosynthetically active radiation (PAR) was measured, and the relationships between light penetration, germination, and growth were examined. The study found an inverse relationship between RBA and the number of germinants, but the mortality of germinants was not influenced by RBA. PAR also had a significant positive effect on germination, but, did not affect mortality of germinants. In addition, RBA and PAR had no effect on mortality or growth of planted seedlings. Continued monitoring of seedling recruitment into the stand will be required to determine the efficacy of the system. However, nothing in the first year data suggests that this approach will not be successful in sustaining an uneven-aged stand.
Potential Role of Drebrin A, an F-Actin Binding Protein, in Reactive Synaptic Plasticity after Pilocarpine-Induced Seizures: Functional Implications in Epilepsy
Lotfi Ferhat
International Journal of Cell Biology , 2012, DOI: 10.1155/2012/474351
Abstract: Several neurological disorders characterized by cognitive deficits, including Alzheimer's disease, down syndrome, and epilepsy exhibit abnormal spine density and/or morphology. Actin-based cytoskeleton network dynamics is critical for the regulation of spine morphology and synaptic function. In this paper, I consider the functions of drebrin A in cell shaping, spine plasticity, and synaptic function. Developmentally regulated brain protein (drebrin A) is one of the most abundant neuron-specific binding proteins of F-actin and its expression is increased in parallel with synapse formation. Drebrin A is particularly concentrated in dendritic spines receiving excitatory inputs. Our recent findings point to a critical role of DA in dendritic spine structural integrity and stabilization, likely via regulation of actin cytoskeleton dynamics, and glutamatergic synaptic function that underlies the development of spontaneous recurrent seizures in pilocarpine-treated animals. Further research into this area may provide useful insights into the pathology of status epilepticus and epileptogenic mechanisms and ultimately may provide the basis for future treatment options. 1. Introduction The human brain is composed by hundred billion neurons interconnected in order to form functional neuronal networks that control higher brain functions, such as learning, thoughts, emotions, and memory throughout life. The communication between neurons within neuronal networks is mediated via synapses. Tight control mechanisms of the formation, growth, and connectivity of synapses are crucial for accurate neural network activity and normal brain function. For example, the development, remodeling, and elimination of excitatory synapses on dendritic spines represent ways of refining the microcircuitry in the brain. Thus, when processes involved in structural synapses and/or synaptic function go awry, either during normal aging or in disease, dysfunction of the organism occurs. 2. Dendritic Spines and Functions Dendritic spines are tiny protrusions from the dendritic tree that serve as the postsynaptic component for the vast majority of excitatory synapses in the central nervous system [1–4]. These protrusions are found on most excitatory and some inhibitory neurons [2, 3, 5, 6]. The dendritic spine consists of a bulbous head connected to the dendritic shaft by a narrow neck [1, 7]. The narrow neck of the spine forms a spatially isolated compartment where molecular signals can rise and drop without diffusing to neighboring spines along the parent dendrite, thus allowing the isolation
RPE (Résonance Paramagnétique Electronique): Applications biomédicales
Mohammed FERHAT
Technologies de Laboratoire , 2008,
Abstract: La Résonance Paramagnétique Electronique (RPE) est un puissant moyen d'investigation des systèmes paramagnétiques. Ces systèmes correspondent à des matrices se dotant d’électrons célibataires tels que les complexes de métaux de transition, les sels, les radicaux libres, … etc. Les renseignements fournis par le RFE concernent l’identification, la structure électronique et géométrique des systèmes étudiés, leur comportement dynamique, les mécanismes de réaction, …etc. De plus, la RPE, vue sa grande sensibilité, s'applique aussi aux systèmes diamagnétiques moyennant des radicaux libres qui peuvent être utilisés comme sondes (techniques de marquage et de piégeage de spin) : études de solvatation, de mécanismes de transferts dans les systèmes biologiques, études conformationnelles, …etc. C’est pourquoi la RPE est devenue ces dernières années un outil d’étude puissant pour la biologie, la pharmacologie, en biomédicale, …etc. Comparée à la RMN, la RPE est une technique beaucoup plus sensible (facteur 1000-2000), mais l'interprétation des spectres est plus délicate, notamment à cause des effets d'anisotropie et à cause au couplage entre les moments de spin électronique et orbital. Les mesures quantitatives sont également moins faciles à effectuer avec la RPE qu'avec la RMN.
From “Ghetto” to “Interculturality”: Euro-Turkish Experiences in Germany and France
Ferhat Kentel
Revista CIDOB d'Afers Internacionals , 2006,
Abstract: This article is based on a research project carried out among Turkish immigrants in Germany and France. It deals with showing the multiplicity of identity formation, depending on generations, but, above all, the new experiences of the “Turkish communities”, namely,in a range from being self-enclosed to total assimilation in the case of “citizen of the French Republic” and “German culturalism”. In this range, what enriches the debate on identities and “the issue of integration” is, above all, these identities in movement which, up until now, have been perceived as indices of the inability of the actors in situ. This article attempts to demonstrate that, far from being a question of inability, it is a matter of “new tactics of superseding” the modernist structures, unable to satisfy the existenceof the diaspora. Thus, while the individuals in the immigrant communities enter into cultural negotiation with the society and play on the borders, in a trans-national space, they call into question modernist dichotomies and national borders and symbols. Finally,“intersubjectivity” and “interculturality”, in which these individuals fulfil themselves, bind the dissociated parts of the human being and social life and prepare the social bases of a new citizenship.
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