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匹配条件: “Salih H. Durmus” ,找到相关结果约149677条。
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Nesting Activity of Loggerhead Turtles (Caretta caretta) at G ksu Delta, Turkey during 2004 and 2008 nesting seasons
Salih H. Durmus,?etin Ilgaz,Adem ?zdemir,Sedat V. Yerli
Ecologia Balkanica , 2011,
Abstract: G ksu Delta is one of the most important nesting beaches in Turkey for the endangered loggerhead turtle (Caretta caretta). This paper provides information on the nesting activities of loggerhead turtles, the spatial and temporal distribution of nesting, nesting success, nesting density, hatching success, incubation duration and clutch size over two nesting seasons. A total of 902 emergences occurred over two seasons, of which 239 (26.5%) nests were deposited (137 nests in 2004 and 102 nests in 2008) and the overall mean nesting density was 3.4 nests/km. The peak of nesting emergences takes place mainly in June. Of the overall nests, 226 (94.6%) were excavated and 16044 eggs were counted. Of these eggs, 3680 (22.9%) hatchlings emerged and 2695 (73.2% of hatchlings) of them were able to reach the sea. The mean number of eggs per clutch was 71 (range: 15 – 143). The shortest and longest incubation duration in these 2 seasons ranged from 46 to 62 days with a mean of 53 days. The main problems are negatively affecting loggerhead turtle population at G ksu Delta are dense jackal predation both adult and eggs and inundation in nests. The average nesting effort here (mean: 119.5 nests/season) confirms that G ksu Delta is one of the most important nesting sites for loggerhead turtles in Turkey.
Invertebrate Infestation of Caretta caretta Nests at Fethiye Beaches, Turkey
Adem Ozdemir,Cetin Ilgaz,Yusuf Kumlutas,Salih Hakan Durmus
Pakistan Journal of Biological Sciences , 2006,
Abstract: In this study, the impact of invertebrate groups on the Caretta caretta hatchlings and eggs on Fethiye beaches, Turkey between the 1999 and 003 nesting seasons were compared and precautions required to be taken to minimize the impact of invertebrates were suggested. Prevalence of invertebrate animal groups (Tenebrionidae, Acarina, Diptera and Oligochaeta) were detected almost 70% of the nests. Tenebrionidae larvae as an important predator due to the fact that this larvae causes destruction in 265 (56.98%) of the 465 nests and caused a greater damage to eggs (8.22%, 847 of 22444 eggs in 265 infested nests). Invertebrates were observed most destructive on the Yaniklar beach, followed by Akg l and alis beaches with respect to nest sites. Only Tenebrionidae and Dipteran larvae were detected in the hatchlings, while all of the invertebrate groups were found on the eggs. Thanks to protective measurements taken in 2002 and 003 breeding seasons, invertebrate infestation on eggs and hatchlings of Caretta caretta was reduced.
Exact Static Solutions for Scalar Fields Coupled to Gravity in $(3+1)$-Dimensions
Ayse H. Bilge,Durmus Daghan
Physics , 2005,
Abstract: Einstein's field equations for a spherically symmetric metric coupled to a massless scalar field are reduced to a system effectively of second order in time, in terms of the variables $\mu=m/r$ and $y=(\alpha/ra)$, where $a$, $\alpha$, $r$ and $m$ are as in [W.M. Choptuik, ``Universality and Scaling in Gravitational Collapse of Massless Scalar Field", \textit{Physical Review Letters} {\bf{70}} (1993), 9-12]. Solutions for which $\mu $ and $y$ are time independent may arise either from scalar fields with $\phi_t=0$ or with $\phi_s=0$ but $\phi$ linear in $t$, called respectively the positive and negative branches having the Schwarzschild solution characterized by $\phi=0 $ and $\mu_s+\mu=0$ in common. For the positive branch we obtain an exact solution which have been in fact obtained first in [I.Z. Fisher,``Scalar mesostatic field with regard for gravitational effects", \textit{Zh. Eksp. Teor. Fiz.} {\bf{18}} (1948), 636-640, gr-qc/9911008] and rediscovered many times (see D. Grumiller, ``Quantum dilaton gravity in two dimensions with matter", PhD thesis, \textit{Technische Universit$\ddot{a}$t, Wien} (2001), gr-qc/0105078) and we prove that the trivial solution $\mu=0$ is a global attractor for the region $\mu_s+\mu>0 $, $\mu<1/2$. For the negative branch discussed first in [M. Wyman, ``Static spherically symmetric scalar fields in general relativity", \textit{Physical Review D} {\bf{24}} (1981), 839-841] perturbatively, we prove that $\mu=0$ is a saddle point for the linearized system, but the non-vacuum solution $\mu=1/4$ is a stable focus and a global attractor for the region $\mu_s+\mu>0$, $\mu<1/2$.
An Exact Solution for Static Scalar Fields Coupled to Gravity in $(2+1)$-Dimensions
Durmus Daghan,Ayse H. Bilge
Physics , 2005, DOI: 10.1007/s10714-005-0111-2
Abstract: We obtain an exact solution for the Einstein's equations with cosmological constant coupled to a scalar, static particle in static, "spherically" symmetric background in 2+1 dimensions.
Human Rights Situation in Iraq and Kurdistan Region: Constitutional and Political Prospects  [PDF]
Jaafar H. Khidir, Sarhang H. Salih
Beijing Law Review (BLR) , 2014, DOI: 10.4236/blr.2014.54028
Abstract: This study, which deals with Human Rights situation in Iraq and Kurdistan Region during the last three decades, aims to discuss and analyze certain Human Rights issues, including civil, political and cultural rights as stipulated in the current Iraqi Constitution and reflected under the present political circumstances, making specific short references to Human Rights Education. As a descriptive analytical study, clear integrated legal and political materials are used to draw particular realistic conclusions about violations of Human Rights, as well as the contradictions between the content of the Constitution and what is happening within political developments’ process on the ground. In this regard, it seems that severe difficulties and serious challenges have reduced the capacity of Iraq and Kurdistan Region from building an efficient system for Human Rights which is able to enhance Human Rights issues and support Human Rights Education.
The Cost Function Minimization for Predictive Control by Newton-Raphson Method
B. Durmus,H. Temurtas,N. Yumusak,F. Temurtas
Lecture Notes in Engineering and Computer Science , 2008,
Abstract:
Analytical Evaluation of Energy and Electron Concentrations in Quantum Wells of the High Electron Mobility Transistors  [PDF]
Salih Saygi
Open Journal of Applied Sciences (OJAppS) , 2014, DOI: 10.4236/ojapps.2014.43014
Abstract: In this letter we propose analytical evaluation method for the electron density and the energy density in multi-layered high electron mobility transistors (HEMTs). The algorithm is used to simulate the variation of the electron density and the energy density against temperature of hetero-junction AlGaN/GaN. The proposed procedure guaranties the reliable application of the contribution of multi-layered HEMTs structure. In conclusion, the obtained results are estimated and discussed.
A COMPARISON OF PRE- AND IN-SERVICE PRESCHOOL TEACHERS’ MATHEMATICAL ANXIETY AND BELIEFS ABOUT MATHEMATICS FOR YOUNG CHILDREN
Durmus Aslan
Academic Research International , 2013,
Abstract: This study was conducted to investigate pre- and in-service preschool teachers’ mathematical anxiety and beliefs about mathematics for young children. The sample included 100 pre-service preschool teachers (50 first grade and 50 last grade preservice teachers) and 50 in-service preschool teachers. As data collection tools “Beliefs Survey” and “Math Anxiety Scale” were used. Findings indicate that inserviceteachers had more mathematical anxiety score than pre-service teachers. Also in-service teachers had higher beliefs score than pre-service teachers. Indeed, last grade pre-service teacher who had taken the course about mathematics education in preschool had higher beliefs score than first grade pre-service teachers who had not taken that course.
Identifying Critical Parameters in SIR Model for Spread of Disease  [PDF]
Sarbaz H. A. Khoshnaw, Najem A. Mohammad, Rizgar H. Salih
Open Journal of Modelling and Simulation (OJMSi) , 2017, DOI: 10.4236/ojmsi.2017.51003
Abstract: Calculating analytical approximate solutions for non-linear infectious disease models is a difficult task. Such models often require computational tools to analyse analytical approximate methods which appear in some theoretical and practical applications in systems biology. They represent key critical elements and give some approximate solutions for such systems. The SIR epidemic disease model is given as the non-linear system of ODE’s. Then, we use a proper scaling to reduce the number of parameters. We suggest Elzaki transform method to find analytical approximate solutions for the simplified model. The technique plays an important role in calculating the analytical approximate solutions. The local and global dynamics of the model are also studied. An investigation of the behaviour at infinity was conducted via finding the lines and singular points at infinity. Model dynamic results are computed in numerical simulations using Pplane8 and SimBiology Toolbox for Mathlab. Results provide a good step forward for describing the model dynamics. More interestingly, the simplified model could be accurate, robust, and used by biologists for different purposes such as identifying critical model elements.
Prevalence of Atrial Fibrillation in Systolic Heart Failure, Pulsed and Tissue Doppler Echocardiographic Abnormalities  [PDF]
Salih H. Gabani, Taysir S. Garadah, Adela B. Hassan, Ahmed A. Jaradat, Mohamed E. Al Alawi, Zuheir A. Hasan
International Journal of Clinical Medicine (IJCM) , 2013, DOI: 10.4236/ijcm.2013.411089
Abstract:

Background: Heart failure (HF) is a common clinical syndrome mostly due to the impaired ability of the Left Ventricle (LV) to eject blood with reduced cardiac output. Heart failure is called systolic (SHF) if left ventricle ejection fraction on echo-cardiogram is low (LVEF of ≤50%). Aim: To assess the echocardiographic characteristics of patients with SHF with Atrial Fibrillation (AF) and compare with those with Sinus Rhythm (SR) on 12 leads ECG. Furthermore, to evaluate the clinical and biochemical markers for the prediction of AF in SHF. Method: Over two years duration, each patient diagnosed with SHF was enrolled in the study (n = 354) based on admission code. AF or sinus rhythm on 12 leads ECG was documented on each patient. Multiple logistic regression analysis was applied to assess the risk ratio of different clinical and Doppler derived variables for the development of AF in SHF. Results: Out of the total hospital medical admissions of 14,674 patients, there were 354 patients with diagnosis of SHF, a prevalence of 2.4%. The incidence of AF on ECG was 109 (31%) patients in the whole study population and 245 (69%) in SR. M Mode echocardiogram in patients with SHF and AF compared with those in SR showed significant dilation of LV cavity in systole with LVESD of 5.72 ± 0.63 vs. 5.23 ± 0.76 cm, P < 0.001 and in Diastole LVEDD of 6.83 ± 0.51 vs. 6.58 ± 0.63 cm, P < 0.001.

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