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Search Results: 1 - 10 of 310 matches for " Tuncer Suzer "
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Dynamic Stabilisation in the Treatment of Degenerative Disc Disease with Modic Changes
Olcay Eser,Cengiz Gomleksiz,Mehdi Sasani,Tunc Oktenoglu,Ahmet Levent Aydin,Yaprak Ataker,Tuncer Suzer,Ali Fahir Ozer
Advances in Orthopedics , 2013, DOI: 10.1155/2013/806267
Abstract: Objective. Posterior dynamic stabilization is an effective alternative to fusion in the treatment of chronic instability and degenerative disc disease (DDD) of the lumbar spine. This study was undertaken to investigate the efficacy of dynamic stabilization in chronic degenerative disc disease with Modic types 1 and 2. Modic types 1 and 2 degeneration can be painful. Classic approach in such cases is spine fusion. We operated 88 DDD patients with Modic types 1 and 2 via posterior dynamic stabilization. Good results were obtained after 2 years of followup. Methods. A total of 88 DDD patients with Modic types 1 and 2 were selected for this study. The patients were included in the study between 2004 and 2010. All of them were examined with lumbar anteroposterior (AP) and lateral X-rays. Lordosis of the lumbar spine, segmental lordosis, and ratio of the height of the intervertebral disc spaces (IVSs) were measured preoperatively and at 3, 12, and 24 months after surgery. Magnetic resonance imaging (MRI) analysis was carried out, and according to the data obtained, the grade of disc degeneration was classified. The quality of life and pain scores were evaluated by visual analog scale (VAS) score and Oswestry Disability Index (ODI) preoperatively and at 3, 12, and 24 months after surgery. Appropriate statistical method was chosen. Results. The mean 3- and 12-month postoperative IVS ratio was significantly greater than that of the preoperative group ( ). However, the mean 1 and 2 postoperative IVS ratio was not significantly different ( ). Furthermore, the mean preoperative and 1 and 2 postoperative angles of lumbar lordosis and segmental lordosis were not significantly different ( ). The mean VAS score and ODI, 3, 12, and 24 months after surgery, decreased significantly, when compared with the preoperative scores in the groups ( ). Conclusion. Dynamic stabilization in chronic degenerative disc disease with Modic types 1 and 2 was effective. 1. Introduction Chronic low back pain (LBP) has been one of the most common causes of disability in adults and is a very important disease for early retirement in industrialized societies. Degenerative disc disease (DDD) is the most frequent problem in patients with LBP. The prevalence of Modic changes among patients with DDD of the lumbar spine varies between 19% and 59%. Type 1 and 2 Modic changes are more common than type 3 and mixed changes [1–13]. Degenerative vertebral endplate and subchondral bone marrow changes were first noted on magnetic resonance imaging (MRI) by Roos et al. in 1987 [1]. A formal classification
On complex permittivity of dilute random binary dielectric mixtures in two-dimensions
Enis Tuncer,Emre Tuncer
Physics , 2001,
Abstract: Influence of number of particles considered in numerical simulations on complex dielectric permittivity of binary dilute dielectric mixtures in two-dimensions are reported. In the simulations, dodecagons (polygons with 12-sides) were used to mimic disk-shaped inclusions. Using such an approach we were able to consider $16^2$ particles in a unit-square. The effective dielectric permittivity of the mixtures were calculated using the finite element at two different frequecies which were much higher and lower than the characteristic relaxation rate of the Maxwell-Wagner-Sillars polarization. The results were compared to an analytical solution. It was found that the permittivity values at low frequencies were inside Wiener bounds however they violated the Hashin-Shtrikman bounds.
Geometrical Description in Binary Composites and Spectral Density Representation
Enis Tuncer
Materials , 2010, DOI: 10.3390/ma3010585
Abstract: In this review, the dielectric permittivity of dielectric mixtures is discussed in view of the spectral density representation method. A distinct representation is derived for predicting the dielectric properties, permittivities ε, of mixtures. The presentation of the dielectric properties is based on a scaled permittivity approach, ξ = ( ε e ? ε m)( ε i ? ε m) ?1, where the subscripts e, m and i denote the dielectric permittivities of the effective, matrix and inclusion media, respectively [Tuncer, E. J. Phys.: Condens. Matter 2005, 17, L125]. This novel representation transforms the spectral density formalism to a form similar to the distribution of relaxation times method of dielectric relaxation. Consequently, I propose that any dielectric relaxation formula, i.e., the Havriliak-Negami empirical dielectric relaxation expression, can be adopted as a scaled permittivity. The presented scaled permittivity representation has potential to be improved and implemented into the existing data analyzing routines for dielectric relaxation; however, the information to extract would be the topological/morphological description in mixtures. To arrive at the description, one needs to know the dielectric properties of the constituents and the composite prior to the spectral analysis. To illustrate the strength of the representation and confirm the proposed hypothesis, the Landau-Lifshitz/Looyenga (LLL) [Looyenga, H. Physica 1965, 31, 401] expression is selected. The structural information of a mixture obeying LLL is extracted for different volume fractions of phases. Both an in-house computational tool based on the Monte Carlo method to solve inverse integral transforms and the proposed empirical scaled permittivity expression are employed to estimate the spectral density function of the LLL expression. The estimated spectral functions for mixtures with different inclusion concentration compositions show similarities; they are composed of a couple of bell-shaped distributions, with coinciding peak locations but different heights. It is speculated that the coincidence in the peak locations is an absolute illustration of the self-similar fractal nature of the mixture topology (structure) created with the LLL expression. Consequently, the spectra are not altered significantly with increased filler concentration level—they exhibit a self-similar spectral density function for different concentration levels. Last but not least, the estimated percolation strengths also confirm the fractal nature of the systems characterized by the LLL mixture expression. It is concluded
Some technological properties of phenotypically identified enterococci strains isolated from Turkish tulum cheese
Y Tuncer
African Journal of Biotechnology , 2009,
Abstract: In this study, a total of 39 enterococci strains were isolated and identified as 17 Enterococcus faecium (43.58%), 11 Enterococcus faecalis (28.21%) and 11 Enterococcus durans (28.21%) strains from 28 Tulum cheese samples from Isparta, Turkey. Three E. faecium (EYT6, EYT21 and EYT34) and 1 E. durans (EYT16) strains showed -hemolytic activity on Sheep Blood Agar. None of the all strains exhibited -hemolysis. All of the 39 enterococci strains were sensitive to vancomycin (30 g vancomycin per disk, inhibition zone > 12 mm). Three E. faecium (EYT17, EYT31 and EYT39) and 1 E. durans (EYT19) strains were found as bacteriocin producer. E. faecium strains showed higher acidifying ability than E. faecalis and E. durans strains. The highest proteolytic activity value (100.5 g tyrosine/ml) was obtained from E. faecalis EYT18. Proteolytic activity results showed that E. faecalis strains generally more active than E. faecium and E. durans strains. E. faecalis strains were found the most lipolytic, followed by the E. faecium and E. durans strains and E. faecalis EYT7 strain gave the maximum halo radius (0.53 mm). None of the 39 enterococci strains decarboxylated histidine, lysine or ornithine. However, 36 of the 39 strains (92.31%) produced tyramine from tyrosine.
The Federal effect: the role of Federal Germany upon the development of European Union regional policies
Aziz Tuncer
International Journal of Human Sciences , 2012,
Abstract: Germany, as the leading member of the EU, has federal administrative system and the lander have a great autonomy compared to regional governments in the unitary member states. Yet, by means of the welfare state policies in the 1960’s, the federal government exercised an increasing power over the lander. Moreover, as a consequence of European Union’s state oriented approach, the lander could not participate EU’s decision making processes influentially. In order to make a change in this framework and create a fertile sphere within EU for the participation of sub state actors, they insistently proposed some fundamental policy shifts, and their proposals later became EU official policy, so they pioneered for the emergence of deeply rooted EU regional policies. Furthermore, the lander have an undeniable impact upon the development of regional administration in the unitary member states.
Tuncer Gulensoy
Idil Dergisi , 2012, DOI: 10.7816/idil-01-05-01
Abstract: Person names range by nations, customs and traditions, beliefs, religions and neighbours. Turks since K k Türks, at the periods of Uighurs, Kyrgyzi, Karakhanids, Seljuq Turks and Ottomans have used different person names. In this research, Turkish person names have been examined briefly.
Turkish Studies , 2011,
Abstract: Future expectation is one of the factors that influence the period person live in and his/her future life. Experiences gained alter quality of these expectations. Positive experiences gained enable the person to manage the period he/she has lived in and to raise expectation level, thus having high level performance in his/her future life. In this research, FESA scale was adapted to Turkish for this purpose. With comments of experts with respect to the scale, exploratory and confirmatory factor analysis was performed for the scale. For factor analysis, SPSS 17 and Amos 16 packages were used. According to factor analysis, it is shown that four-factor structure of the scale is applicable. With this scale, influence of various independent variables upon future expectations can be determined in terms of adolescents. In addition, thanks to this scale adapted, teachers and educational institutions can determine future expectations of their learners and thus shape educational activities to be performed. Gelecek beklentileri bireyin i inde bulundu u d nemi ve sonraki ya am n etkileyen unsurlardan biridir. Ya an lan deneyimler bu beklentilerin niteli ini de i tirmektedir. Ya an lan deneyimlerin olumlu olmas hem ki ilerin i inde bulunduklar d nem g revlerini ba ar l ekilde yürütmelerini hem de beklenti düzeylerini artt rarak sonraki ya amlar na ili kin daha üst düzeylerde performans g stermelerini sa lamaktad r. Bu ara t rmada belirtilen bu nemden yolan k larak FESA l e i Türk eye uyarlanm t r. l e e ili kin uzman g rü leri al narak l e in a mlay c ve do rulay c fakt r analizleri yap lm t r. Fakt r analizleri i in SPSS 17 ve Amos 16 paket programlar ndan yararlan lm t r. Fakt r analizine g re l e in d rt fakt rlü yap s n n uygun oldu u g rülmü tür. Bu l ek yard m yla e itli ba ms z de i kenlerin gelecek beklentileri üzerindeki etkisi ergenler a s ndan belirlenebilecektir. Bunun yan nda retmenler ve e itim kurumlar rencilerinin gelecek beklentilerini bu l e in uygulanmas suretiyle belirleyerek yürütülecek e itim faaliyetlerine y n verebilecektir.
Turkish Studies , 2011,
Abstract: In this research, future expectations of the students in the vocational school of higher education, which grows intermediate staff for business world and thus is the place exposing to the global effects mostly, are the most mass exposing to global effects were evaluated. To this end, a scale for future expectations was created by literature review. As a result of factor analysis of future expectations scale, single factorial structure was preferred, and cronbach alpha coefficient of the scale was found to be .84. The scale prepared was applied to 430 students in different departments of Tunceli Vocational School of Higher Education. For analysis of data obtained as a result of performance of the scale, independent groups t test, Anova test, Mann Whitney U test, Kruskal Wallis H and Tukey HSD test were used. According to the results of the analysis, a reasonable difference between the genders in favour of female students was found with respect to future expectations of students of Vocational School of Higher Education. It was also found that there was a reasonable difference between the student having 3-4 brothers and/or sisters and the students having 5 and more brothers and/or sisters. For removing uncertainty about future expectations believed to occur in relation to globalisation and technology, it is thought that strengthening relation with the sector will be beneficial. In addition, it is proposed that the students must be made ready for the future by optional courses and by educating them in fields of profession outside the vocational programme via flexible education models. Bu ara t rmada i ya am na ara eleman yeti tiren ve bu zelli i nedeniylede küresel etkilere en ok maruz kalan meslek yüksek okullar nda renim g ren rencilerin gelecek beklentileri de erlendirilmi tir. Bu ama la literatür taramas na g re gelecek beklentileri l e i olu turulmu tur. Gelecek beklentileri l e inin fakt r analizi yap larak tek fakt rlü yap s nda karar k l nm , l e in cronbach alfa katsay s .84 bulunmu tur. Haz rlanan l ek Tunceli Meslek Yüksekokulunun farkl b lümlerinde renim g ren 430 renciye uygulanm t r. l ek uygulamas yla elde edilen verilerin analizinde Ba ms z gruplar t testi, Anova testi, Mann Whitney U testi, Kruskal Wallis H ve Tukey HSD testinden yararlan lm t r. Analiz sonu lar na g re Meslek yüksek okulu rencilerinin gelecek beklentileri aras nda cinsiyet de i keni g re k z renciler lehine anlaml fark bulunmu tur. Ayr ca rencilerin gelecek beklentileri aras nda 3-4 karde e sahip renciler ile 5 ve daha fazla karde say s na s
Learning and Teaching Languages Online: A Constructivist Approach
Tuncer Can
Novitas-ROYAL , 2009,
Abstract: The recent advances in technology have necessitated first new approaches and then new methodologies in the area of foreign language learning and thoroughly teaching. The Internet and the virtual learning environments have diversified the opportunities for school teachers, instructional designers as well as learners by varying and broadening the alternatives for learning and teaching of languages. Employing tools and applications, other than classroom and course books, in the learning of foreign languages requires reconsidering the pedagogy, methodology, applications, teacher roles, interaction types, and teaching environment itself. And also multiple selections of channels, through which the teaching materials can be implemented mandate the revision of traditional one way communication between the teachers and the learners. An acknowledgement is brought about by the constructivist approach with its assumptions about learning and knowledge, multiple perspectives and modes of learning and the complexity of learning environments. Constructivist approach is promising at promoting learners’ language and communicative skills as well as at fostering their autonomy, social and interactive skills contributing to their development into more confident, pro-active and responsible individuals by supporting incentives on diverse media in language learning and teaching.
The Development of Data Waste (D-Waste) Scale toward for Computer Users
Murat Tuncer
International Online Journal of Educational Sciences , 2012,
Abstract: Next to educational purposes, in today’s world, computers have turned into tools pervasively used in research activities. In the emergence of this new situation it can be alleged that fast access to developing and changing amount of data via computers and the possibility of storing such data have collectively been influential. One of the issues deserving analysis throughout this process is data and learning residuals related to user behaviors. In relevant literature no research focusing on such dimension of computer-assisted learning has yet been encountered. In current research it has been aimed to develop a scale to use in searching the reasons accounting for data residuals related to behaviors of computer users. Within that scope the participants of scale development study have been selected amidst 93 academicians from F rat and Tunceli Universities. According to exploratory and confirmatory factor analyses, four-factor and 13-item structure of data residual scale addressing to computer users with its CFI (,930), GFI (,868), IFI (,934), RMSEA (,070) and SRMR (,088) values is successful with respect to scale development study. It is believed that this scale can be employed in interim assessments that shall be conducted to enable a better implementation of computer-assisted studies. 2012 IOJES. All rights reserved
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