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Search Results: 1 - 10 of 907 matches for " Burcu Sultan ABBAK "
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Solution Methods and Suggestions of Preschool Teachers Towards Inclusive Education Problems
Ayperi D?K?C? SI?IRTMA?,Gülsüm HO?,Burcu Sultan ABBAK
Journal of Kirsehir Education Faculty , 2011,
Abstract: The main purpose of this study is to find out the researches have been conducted in Turkey on the attitudes of preschool teachers towards the inclusion of children with special educational needs in preschools and determine the problems gained from the results of these researches related with teachers attitudes about inclusion. Another aim of the study is to obtain and examine teachers solutions and advices related with the problems in inclusive education. The study was carried out in Adana with 15 preschool teachers who have children with special needs in their classrooms. In this study semi-structured interview was used as data collection instrument.
Modified Directional Wide Band Printed Monopole Antenna for Use in Radar and Microwave Imaging Applications
Javad Jangi Golezani;Mehmet Abbak;Ibrahim Akduman
PIER Letters , 2012, DOI: 10.2528/PIERL12052803
Abstract: This paper presents a modified design of directional monopole antenna with parabolic-shaped ground plane. To increase the directivity, axis of parabola in the ground plane is rotated 45 degrees (in comparison with the previous antenna) to extend throughout the direction of the substrate's diagonal. Consequently, vertex of the parabola is placed at the optimum point in the corner of the substrate. The aim of this attempt is to design an extended and symmetrical ground plane around the patch, with more clarity, to maximize its capability as a reflector. Directivity is further improved by inserting parabolic-shaped slots at the corners of the ground plane. Simulation and measurements show that the proposed antenna has stable directional radiation pattern and higher gain compared to the previous directional monopole antennas. Impedance bandwidth of the antenna covers the frequency range of 4-9 GHz. Measured HPBW is among the degrees 54-22 between 4 and 9 GHz. Gain and HPBW of the antenna are improved 1.3-3.1 dB and 5-15 degrees, respectively among the bandwidth in comparison with previous antenna. Results confirm the good characteristics of the antenna for use in microwave imaging, where high resolution is required.
In Situ Preparation of Core Shell-Polypyrrole /Poly (Acrylonitrile-Co-Vinyl Acetate) Nanoparticles and Their Nanofibers  [PDF]
Burcu Arman, A. Sezai Sarac
Soft Nanoscience Letters (SNL) , 2014, DOI: 10.4236/snl.2014.42006
Abstract: Poly (acrylonitrile-co-vinyl acetate)/polypyrrole composite particles with uniform size and morphology have been synthesized using one-step polymerization that involves swelling and coating of polypyrrole (PPy) into P (AN-co-VAc) latex nanoparticles. As an initial stage, free radical copolymerization of acrylonitrile (AN) and vinyl acetate (VAc) was synthesized by emulsion polymerization using ammonium persulfate (APS) and dodecyl benzene sulfonic acid salt (DBSA) as a surfactant. P (AN-co-VAc)/PPy composites were obtained first time by in situ addition of the pyrrole into the reaction medium. The electrospun P (AN-co-VAc)/PPy nanofibers were obtained from the nanoparticles with better properties and the effect of PPy on the morphology of nanofibers was studied by scanning electron microscopy (SEM). High degree of homogeneity and molecular order induced by molecular dispersion of polypyrrole on copolymer matrix without phase separation improve the transport properties and stability of polypyrrole, which are critical for high-performance organic electronics.
Record Values from the Inverse Weibull Lifetime Model: Different Methods of Estimation  [PDF]
Khalaf S. Sultan
Intelligent Information Management (IIM) , 2010, DOI: 10.4236/iim.2010.211072
Abstract: In this paper, we use the lower record values from the inverse Weibull distribution (IWD) to develop and discuss different methods of estimation in two different cases, 1) when the shape parameter is known and 2) when both of the shape and scale parameters are unknown. First, we derive the best linear unbiased estimate (BLUE) of the scale parameter of the IWD. To compare the different methods of estimation, we present the results of Sultan (2007) for calculating the best linear unbiased estimates (BLUEs) of the location and scale parameters of IWD. Second, we derive the maximum likelihood estimates (MLEs) of the location and scale parameters. Further, we discuss some properties of the MLEs of the location and scale parameters. To compare the different estimates we calculate the relative efficiency between the obtained estimates. Finally, we propose some numerical illustrations by using Monte Carlo simulations and apply the findings of the paper to some simulated data.
Comparison of the arch forms and dimensions in various malocclusions of the Turkish population  [PDF]
Sultan Olmez, Servet Dogan
Open Journal of Stomatology (OJST) , 2011, DOI: 10.4236/ojst.2011.14023
Abstract: Objectives: The aim of this study is to determine the distribution of morphological differences in the cli- nical mandibular arch forms seen in Angle Class I, II and III malocclusions in Turkish population and to examine the effect of gender on arch dimension pa- rameters. Material and methods: This study has been conducted on pretreatment mandibular study models of 600 individuals (362 girls, 238 boys) aged between 14 and 19. On the photocopies derived from these models, 4 linear and 2 proportional measurements have been made. The samples have been evaluated as square, ovoid and tapered (OrthoForm-3M Unitek) arch form templates. Results: The most frequent arch form encountered among all the groups was the ta- pered one (62.5%) followed by the ovoid (27.3%) and the square one (10.2%). Gender difference influences on morphological structure was apparent. Generally, compared with girls, arch width and depth were found to be more in boys. Conclusion: The most fre- quent arch form seen in Angle malocclusion groups was the tapered one, followed by the less frequent ovoid and square ones.
Sobolev Gradient Approach for Huxley and Fisher Models for Gene Propagation  [PDF]
Nauman Raza, Sultan Sial
Applied Mathematics (AM) , 2013, DOI: 10.4236/am.2013.48163
Abstract:

The application of Sobolev gradient methods for finding critical points of the Huxley and Fisher models is demonstrated. A comparison is given between the Euclidean, weighted and unweighted Sobolev gradients. Results are given for the one dimensional Huxley and Fisher models.

The Ugly Side of Statins. Systemic Appraisal of the Contemporary Un-Known Unknowns  [PDF]
Sherif Sultan, Niamh Hynes
Open Journal of Endocrine and Metabolic Diseases (OJEMD) , 2013, DOI: 10.4236/ojemd.2013.33025
Abstract:

Cardio-vascular specialists have witnessed and actively participated in the revolutionary developments that have occurred in their field of specialization over the last few years. Cutting-edge technologies have led to dramatic improvements in life-expectancy and quality of life. An open-mind and pioneering attitude are necessary when exploring new frontiers to improve our patients’ health. However, naive indiscriminate acceptance of novel mainstream therapies is not always advisable and prudence is required in unearthing harmful, covert side effects. An objective review of contemporary vascular research was performed and industrial bias was sifted out for a fresh prospective on how to promote primary cardiovascular prevention with attainable lifestyle adjustments [1]. A comprehensive review of Pubmed, EM-BASE and Cochrane review databases was undertaken for articles relating to cardiovascular primary prevention and statin side effects with the aim of harmonising their roles within contemporary clinic practice. Particular attention was paid to large-scale randomised controlled trials on contemporary cardiovascular pharmacotherapies and their specific adverse effects on metabolic pathways which feature prominently in cardiovascular primary prevention and regenerative programmes. There is a categorical lack of clinical evidence to support the use of statin therapy in primary prevention. Not only is there a dearth of evidence for primary cardiovascular protection, there is ample evidence to show that statins actually augment cardiovascular risk in women, patients with Diabetes Mellitus and in the young. Furthermore statins are associated with triple the risk of coronary artery and aortic artery calcification. Cardiovascular primary prevention and regeneration programmes, through life style changes and abstaining from tobacco use have enhanced clinical efficacy and quality of life over any pharmaceutical or other conventional intervention.

Critical appraisal of stem cell therapy in peripheral arterial disease: Do current scientific breakthroughs offer true promise or false hope?  [PDF]
Sherif Sultan, Niamh Hynes
Journal of Biomedical Science and Engineering (JBiSE) , 2014, DOI: 10.4236/jbise.2014.72011
Abstract: Over the last forty years in the field of peripheral arterial disease, there has been a plethora of research into cell-based therapies for tissue repair, regeneration and angiogenesis, progressing from protein-based therapies to gene therapies to stem cell research. Initial pre-clinical research successes have given birth to a whole industry, aimed at translating these laboratory hopes into clinical successes. However, heretofore these expected clinical results have failed to materialize, in part due to the lack of attention to the ischaemic desert like tissue and systemically diseased patient into which the stem cells are being implanted. Unsatisfactory clinical outcomes on the treatment of Critical Limb Ischaemia (CLI) have forced researchers to direct their efforts to the less intimidating challenge of claudication and to lower their clinical outcome thresholds from superior to “non-inferior”. Major questions on safety and durability have also arisen. What needs to be objectively established is the impact on the net health outcome of these therapies. Infusion or injection for stem cell therapy is still considered experimental and investigational. In this review we examine the clinical evidence for angiogenic therapies, focusing specifically on stem cell trials, in an attempt to answer the question “Is stem cell therapy a failed experiment or will there be light at the end of the tunnel?”
CAUSAL LINKS BETWEEN FOREIGN DIRECT INVESTMENT AND TRADE IN TURKEY
Burcu KIRAN
International Journal of Economics and Finance , 2011, DOI: 10.5539/ijef.v3n2p150
Abstract: This paper investigates the empirical evidence on the link between foreign direct investment and trade (export and import) in Turkey over the period from 1992:01 to 2008:04 by using the minimum LM unit root test for stationarity; Granger and Dolado-Lüthkepohl tests for causality. The test results based on the bi-variate VAR model indicate that there is no evidence of causality between foreign direct investment and trade in Turkey.
Nonlinearity and fractional integration in the US dollar/euro exchange rate
Kiran Burcu
Panoeconomicus , 2012, DOI: 10.2298/pan1203325k
Abstract: This paper examines the nonlinear behavior and the fractional integration property of the US dollar/euro exchange rate over the period from January 1999 to August 2010 by extending the procedure of Peter M. Robinson (1994) to the case of nonlinearity. First, using the approach developed by Mehmet Caner and Bruce E. Hansen (2001), we investigate the possible presence of nonlinearity in the series through the estimation of a two-regime threshold autoregressive model. After finding nonlinearity, we also allow for disturbances to be fractionally integrated based on the different versions of Robinson (1994) tests. The findings show that the US dollar/euro exchange rate follows a stationary process with a weak evidence for long memory.
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