Bulunan: 4.900 Adet 0.012 sn
Koleksiyon [19]
Tam Metin [2]
Yayın Türü [11]
Yazar [20]
Yayın Yılı [20]
Konu Başlıkları [20]
Yayıncı [20]
Yayın Dili [10]
Dergi Adı [20]
Public awareness of testicular cancer and self-examination in Turkey: A multicenter study of Turkish Urooncology Society

Kuzgunbay B. | Yaycioglu O. | Soyupak B. | Kayis A.A. | Ayan S. | Yavascaoglu I. | Cal C.

Makale | 2013 | Urologic Oncology: Seminars and Original Investigations31 ( 3 ) , pp.386 - 391

Background: Testicular self-examination is the easiest and cheapest way to scan testicular cancer. However, the public awareness about testicular self-examination is very low. We aimed to investigate the public awareness of Turkish people about testicular cancer and testicular self-examination. Methods: We performed a survey consisting of 10 questions concerning testicular cancer and testicular self-examination in 799 students in the first year of 12 different medical schools. Aiming for a common method of data collection, the questionnaires were administered to the students during a class just before the lesson started. The whole d . . .ata from all of the centers were pooled in a common data-base file. Results: Eighty-nine (11.1%) of the participants reported that they had knowledge about testicular cancer, but only 11 (1.4%) of them answered all the questions about testicular cancer correctly. Eight (1%) of the participants reported that they had been performing testicular self-examination routinely once a month. Four (0.5%) of them were both well informed about testicular cancer and had been performing testicular self-examination once a month as suggested. Conclusion: The present study showed that awareness on testicular cancer and testicular self-examination is very low and suggests a need for efforts in Turkey to increase public awareness and education. © 2013 Elsevier Inc Daha fazlası Daha az

Teacher opinions on use of self-regulation strategies at science and art centers: Turkey sample

Eker C. | İnce M.

Makale | 2018 | Universal Journal of Educational Research6 ( 7 ) , pp.1486 - 1496

The purpose of this study is to identify the usage status of self-regulation strategies at Science and Art Centers (BİLSEMs) that provide the gifted students with education in Turkey. This research was designed within qualitative study and survey model was used. It was conducted with 24 teachers at Science and Art Centers each in the Western Black Sea, Marmara and Aegean regions in Turkey. The teacher interview form designed by the researchers was used as the data collection instrument. Descriptive analysis and content analysis methods were used for analyzing the data. It was concluded in the research that the teachers do not find t . . .hemselves competent about self-regulation strategies. The most observed self-regulation deficiencies among BİLSEM students are deficiencies of motivation and meta-cognitive strategies. The teachers think that BİLSEM curricula do not aim to bring self-regulation skills to students. It was determined that the activities performed by teachers in BİLSEM curricula (Adaptation, Supportive Education, Realizing Individual Abilities, Improving Special Skills, and Project) are rather for actualizing motivation, meta-cognitive and cognitive strategies. © 2018 by authors, all rights reserved Daha fazlası Daha az

On a multiscale model involving cell contractivity and its effects on tumor invasion

Meral G. | Stinner C. | Surulescu C.

Makale | 2015 | Discrete and Continuous Dynamical Systems - Series B20 ( 1 ) , pp.189 - 213

Cancer cell migration is an essential feature in the process of tumor spread and establishing of metastasis. It characterizes the invasion observed on the level of the cell population, but it is also tightly connected to the events taking place on the subcellular level. These are conditioning the motile and proliferative behavior of the cells, but are also in uenced by it. In this work weflpropose a multiscale model linking these two levels and aiming to assess their interdependence. On the subcellular, microscopic scale it accounts for integrin binding to soluble and insoluble components present in the peritumoral environment, whic . . .h is seen as the onset of biochemical events leading to changes in the cell's ability to contract and modify its shape. On the macroscale of the cell population this leads to modifications in the diffusion and haptotaxis performed by the tumor cells and implicitly to changes in the tumor environment. We prove the (local) well posedness of our model and perform numerical simulations in order to illustrate the model predictions Daha fazlası Daha az

Optimum conditions and results from the application of the air blasting excavation system

Akcin N.A.

Makale | 2000 | Mineral Resources Engineering9 ( 3 ) , pp.323 - 334

The air blasting system which had been used between 1930 and 1950 was abandoned after the development of mechanized production systems. In the 1960s, it has been improved to produce coal by sublevel caving method in steep and thick seams. It has been applied to the steep and thick coal seams at Zonguldak hardcoal region, in Turkey, for 6 years. In this paper, firstly, the air blasting excavation system and sublevel caving production methods are introduced. Secondly, the optimum conditions for the application of the system in the region are presented. For the determination of the optimum conditions, the properties of the coal seam, c . . .haracteristics of air blasting excavation system and limitations of the sublevel caving method are considered. Finally, the results of a pilot application at the Kozlu Colliery are given Daha fazlası Daha az

Suspended SiC particle deposition on plastic mold steel surfaces in powder-mixed electrical discharge machining

Ekmekci B. | Ulusöz F. | Ekmekci N. | Yaşar H.

Makale | 2015 | Proceedings of the Institution of Mechanical Engineers, Part B: Journal of Engineering Manufacture229 ( 3 ) , pp.475 - 486

The discharge gap phenomena in powder-mixed electrical discharge machining are examined using SiC powder mixing in water dielectric liquid. Surface modifications on machined work materials are investigated by means of optical, scanning electron microscopy and energy-dispersive spectroscopy. The experimental studies revealed that the surface morphology drastically affected the additives as means of secondary discharges and particle migration from dielectric liquid. Such mechanisms do not occur randomly and indicate a robust dependency with respect to powder suspension concentration, pulse on duration and current. The influence on dis . . .charge transitivity with respect to suspended particle concentration is noted with pock shape development due to secondary discharges followed by an intermediate stage signifying a sudden increase in particle migration from the dielectric liquid. The particles decomposed on the surface at specific operational conditions demonstrating the possibility of methodical surface alloying using the process. Finally, the mechanisms involved were elaborated with respect to operational parameters and discussed based on the experimental results. © IMechE 2014 Daha fazlası Daha az

The influence of RET's on elementary and secondary grade teachers' views of scientific inquiry

Bahbah S. | Golden B.W. | Roseler K. | Elderle P. | Saka Y. | Shoutherland S.A.

Makale | 2013 | International Education Studies6 ( 1 ) , pp.117 - 131

This study explores in-service elementary and secondary science teachers' conceptions of the Nature of Scientific Inquiry and the influence of participation in two different Research Experience for Teacher (RET) programs had on these conceptions. Participant teachers attended one of two six week RET programs in which they worked with scientists to engage in scientific inquiry. Before and after the RETs, teachers completed the Views of Scientific Inquiry (VOSI) questionnaire. Teachers' answers were analyzed to determine the degree of sophistication of their understanding of five facets of scientific inquiry. Both elementary and secon . . .dary teacher participants showed improvement in their understanding of nature of scientific inquiry as a result of program participation, and both programs were successful in supporting the development of inquiry conceptions, although secondary science teachers started and finished the RET's with a more sophisticated understandings of scientific inquiry. Areas of improvement for elementary teachers included the role of questions in science and the role subjectivity and creativity play in the processes of science, and for secondary teachers growth was seen in the role of questions, the relationship of data and evidence, the distinction of experiments and other means of investigations, and the varied methods of science. Implications of these results are discussed Daha fazlası Daha az

The impact of self-regulation strategies on student success and satisfaction in an online course

Inan F. | Yukselturk E. | Kurucay M. | Flores R.

Makale | 2017 | International Journal on E-Learning: Corporate, Government, Healthcare, and Higher Education16 ( 1 ) , pp.23 - 32

The purpose of this study was to examine whether students’ self-regulation skills impact their success and satisfaction in an online learning environment. Data was collected from one hundred and fifty-five students taking an online introductory programming course offered as a part of certification curriculum in a public university in Turkey. The Online Self-regulation and Learning Questionnaire was used to gather learners’ skills in four main sub-components of self-regulation namely planning, help seeking, time management, and self-evaluation. The results indicated that self-regulation, specifically planning, as an important factor . . .for explaining student success and satisfaction in an online course. © 2017, Association for the Advancement of Computing in Education. All rights reserved Daha fazlası Daha az

Weighted approximation of continuous functions by sequences of linear positive operators

Coşkun T.

Makale | 2000 | Proceedings of the Indian Academy of Sciences: Mathematical Sciences110 ( 4 ) , pp.357 - 362

In this work we obtain, under suitable conditions, theorems of Korovkin type for spaces with different weight, composed of continuous functions defined on unbounded regions. These results can be seen as an extension of theorems by Gadjiev in [4] and [5].

Visual acuity and endothelial cell density with respect to the graft thickness in descemet‘s stripping automated endothelial keratoplasty: One year results

Acar B.T. | Akdemir M.O. | Acar S.

Makale | 2014 | International Journal of Ophthalmology7 ( 6 ) , pp.974 - 979

AIM: To evaluate the visual acuity and endothelial cell density according to the thickness in Descemet‘s stripping automated endothelial keratoplasty (DSAEK) one year after surgery. METHODS: DSAEK patients‘ data were reviewed. Thirty seven eyes of 37 patients who underwent DSAEK for pseudophakic bullous keratopathy (PBK) were included in this study. Graft thickness was measured with optical coherence tomography (OCT) 12mo after DSAEK. Eyes were divided into 3 groups based on the graft thickness: thick (>200 µm), medium-thick (150-200 µm) and thin (<150 µm). Best corrected visual acuity (BCVA), endothelial cells density (ECD) a . . .nd complications were assessed and comparisons were done between groups. RESULTS: Median thickness of postoperative grafts was 188 (range 73-317 pm). There was no significant difference in age, sex, preoperative BCVA, or follow-up period between DSAEK groups. At postoperative 12mo, mean BCVA was 0.28±0.10 in thick graft group, 0.52±0.08 in medium-thick graft group, and 0.72±0.06 in thin graft group. Thin grafts showed better postoperative BCVA as compared with the medium-thick and thick grafts (P= 0.001). Thick graft group had 1637.44 ±88.19 -mm2, medium thick graft had 1764.50±34.28-mm2 and thin graft group had 1845.30 ±65.62 -mm2. Thin graft group had better ECD at 12mo after surgery (P=0.001). CONCLUSION: Thin grafts after DSAEK ensure better visual rehabilitation. Eyes with thin grafts had significantly lesser loss of ECD compared to eyes with medium-thick and thick grafts one year after surgery. © 2014, Int J Ophthalmol. All rights reserved Daha fazlası Daha az

Tartismali olgu

Mungan A. | Müezzinoglu T.

Makale | 2007 | Turk Uroloji Dergisi33 ( 4 ) , pp.435 - 437

[No abstract available]

PP-wave solutions of the Weyl-Yang theory of gravity with a five-dimensional Kaluza-Klein ansatz

Kuyrukcu H.

Makale | 2013 | Classical and Quantum Gravity30 ( 15 ) , pp.435 - 437

A Yang-Mills-type quadratic gravity model is considered in the framework of a five-dimensional Kaluza-Klein theory. Field equations and stress-energy tensors are presented in differential forms. A five-dimensional classical Kaluza-Klein metric ansatz is investigated, which consists of a four-dimensional plane-fronted gravitational wave with parallel rays as its sub-metric along with a non-trivial dilaton and gauge fields. It is found that the solution is equivalent to plane-gravitational waves in terms of a spin-0 dilaton and a spin-1 photon. Some special cases are discussed, and it is shown that only the plane-electromagnetic waves . . . with helicity-1 states carried non-zero energy-momentum. © 2013 IOP Publishing Ltd Daha fazlası Daha az

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