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Background: Aim of this study is to assess the color matching in class III restorations made with single-shade resin composite after bleaching with different carbamide peroxide concentrations. Methods: In this study, 20 human incisors that were free of caries or enamel abnormalities and freshly extracted for periodontal or orthodontic reasons were cleaned of blood, debris, and calculus. Mesial and distal surfaces were restored with single-shade composite (Omnichroma, Tokuyama, Japan). All samples were randomly divided into two groups, all of the mesial surfaces were isolated, and distal surfaces were coated with %10 and %15 carbamide peroxide (Opalescence PF; Ultradent Products, Inc, USA). Polishing discs (Zenit Flex, President Dental, Germany) were used the composite restoration. Color matching was evaluated on photographs with a digital colorimeter. SPSS software program was used to perform statistical analysis (IBM Corp., Armonk, NY, USA). Results: Statistically significant difference was found between the color matching of the restorations after the 5th treatment with 15% carbamide peroxide (p = 0.004), and at the end of 10th treatment with 10% carbamide peroxide (p = 0.028). Depending on the carbamide peroxide concentration, after the 5th treatment a statistically significant difference was found between 15% and 10% carbamide peroxide (p = 0.000), but no statistically significant difference after the 10th treatment (p > 0.05). Conclusions: After carbamide peroxide bleaching, hard tissue color became lighter. Since there is no color pigment in single-shade composites, color might be lighter after bleaching. Therefore, these composites may be considered safer in bleaching. Keywords: Bleaching, Color Match, Composite

In this study, a manganese dioxide (MnO2/polyaniline (PANI)/ single-walled carbon nanotube (SWCNT) nanocomposite electrode was prepared for pseudo-supercapacitors. To reduce the internal resistance of the electrode, increase the capacitance stability, and reduce the cost of single-walled carbon nanotubes, SWCNT was subjected to two-step acid etching. The purity of SWCNT was improved from ~95% to 99.98%. In addition, SWCNT was functionalized by this process. Thus, a nanocomposite was formed by coating PANI around SWCNT. MnO2/PANI/SWCNT were synthesized using the hydrothermal method. Morphological, chemical and thermal analyses of the synthesized nanocomposite structure were carried out. In addition, X-ray diffraction (XRD) was used to determine the crystal structure. Electrochemical analyses were performed using a three-electrode system in a 1 M KOH electrolyte solution. Cyclic voltammetry (CV) and galvanostatic charge-discharge (GCD) measurements were performed. The capacitance of the nanocomposite electrode at 400 cycles was 314 mF/cm2, and the capacitance retention stability was calculated at 73.24%. The results showed that the capacitance stability was high, and the supercapacitor was sensitive to redox reactions.

Bu çalışmada Süleyman Ateş’in haberî sıfatlara ilişkin görüşleri ele alınmıştır. Allah’ın sıfatları konusu, İslam tarihinde daha çok ilk yüzyılın sonlarından itibaren tartışılmaya başlanmış olan bir konudur. Bu tartışmalar Allah’a zâtı dışında veya zâtıyla beraber bir sıfat nispet edilip edilmeyeceği, edilecekse bunların neler olduğu, taksimi ve bu sıfatların keyfiyetinin nasıl anlaşılacağı gibi başlıklarda yürütülmüştür. Haberî sıfatlar da tartışılan bu başlıkların önemlilerinden biri olmuştur. Genelde sıfatlar özelde ise haberî sıfatlar konusu, Kelam ve İslam Mezhepleri Tarihi (Fırak Geleneği) alanlarında herhangi bir anlayış, mezhep, ekol, grup veya kişinin hüviyetinin belirlenmesi hususunda önemli göstergelerden biridir. İtikâdî görüşlerin şekillenmesi ve bunların yaygın olarak kabul edilmesinde coğrafyanın son derece önemli bir unsur olduğu aşikârdır. Dolayısıyla araştırmanın temel hipotezi, Ateş’in haberî sıfatlar hakkındaki görüşlerinin bu topraklarda yaygın olan itikadî mezheplerinki ile aynı doğrultuda olacağı şeklindedir. Bu bağlamda Türkiye’de yetişmiş bir âlimin haberî sıfatlarla ilgili görüşlerinin ortaya konulması önemli görülmüştür. Nitel araştırma hüviyetindeki bu çalışmada, Ateş’in haberî sıfatlar hakkındaki görüşleri incelenerek konu hakkındaki düşüncelerinin ortaya konulması amaçlanmaktadır. Araştırmanın hedefleri bağlamında öncelikle sıfatlar konusunda bir genel çerçeve çizilmiş, sonrasında haberî sıfatlar hakkında Mu‘tezile, Ehl-i Hadîs, Eş‘ariyye ve Mâtürîdiyye gibi ekol ve mezheplerin görüşleri ana hatlarıyla ortaya konulmuş ve Ateş’in haberî sıfatlarla ilgili görüşleri vech, ‘ayn, yed ve istivâ örnekleminde incelenerek bir değerlendirme yapılmıştır. Haberî sıfatları kabul eden Süleyman Ateş, bunları Allah’ın zâtı ve fiilleri ile ilgili olanlar şeklinde ayırıp ‘uluvv, ‘ayn, vech, yed, isba‘ ve kabza sıfatlarını zâtına; istivâ, nüzul, rahmet ve gazab sıfatlarını ise fiiline ilişkin sıfatlar olarak tasnif etmektedir. Ateş’e göre haberî sıfatlar Allah’ın, daha iyi anlamaları için kullarına kullandığı bir üslubun parçasıdır. Çünkü insanlar sözlerinin gücünü artırmak için kendi aralarında -dili ne olursa olsun- mecazlı söyleyişlere yer vermektedir. Bu sebeple Allah görünmez alemi, görünen alemden hareketle anlatmıştır. Bunları gerçek manasıyla anlamak doğru değildir. Şayet bunlar gerçek anlamında anlaşılırsa Müşebbihe ve Mücessime’nin hatasına düşülmüş olur. Allah ise teşbîhi andıran her türlü düşünceden münezzehtir. Ateş, çalışma kapsamında ele alınan vech sıfatını Allah’ın zâtı ve Allah’ın rızası; yed sıfatını cömertlik ve bey‘at (Bey’atü’r-Rıdvân), ‘ayn sıfatını da gözetim ve koruma altına alma anlamlarında kullanmakta; istivâ sıfatını ise yönetimi eline almak, kurulmak ve hükümrân olmak anlamlarında açıklayarak bir nevi te’vil yapmaktadır. Ateş’in, bu tespitlerle Mâtürîdîler’in bu konulardaki görüşlerine yakın yorumlar serdettiği görülmektedir.

This paper comes out of a scientific study concerning development of an AR model for the presentation the archaeological site of Alexandria Troas for the visitor experience, and on-site application of this model, through a case, namely the Podium (or Forum) Temple, to investigate the nature of that experience provided by AR and its implications as well. The study is established upon the proposition that “AR is tailored to fit to provide a compatible, accessible, and sustainable presentation of historical built environments and archeological sites to public experience, while respecting much of the problem(atics) coming along with norms and privileges of historical heritage preservation and conservation.” Departing from this ultimate proposition, it sets out a framework of questions to address. This paper provides a summary of the whole research, followed by the detailed description of the methodology and process concerning the developed model’s on-site application, and a succinct presentation of its findings, finally, an account of the research as a means of testing the research questions. Findings confirm much of the assumptions deriving from the initial proposition and showed the great potential of AR towards this end as expected. A number of issues and problems were surfaced as well, some of which are oriented from the technologies concerning the AR itself, while others are related to the limitations of the proposed model and its on-site execution. Furthermore, the research indicated a number of matters to address and possible ways to expand such research. All in all, we argue that the research yielded a number of valuable results and insights in addressing the departing problem situation, while it also posed new questions and research paths to follow for new research.

Set aside the issues concerning their excavation, documentation, and conservation, as far as their presentation to the public experience is concerned, Archaeological sites represent a special case of cultural heritage that come with distinctive set of conditions and demands, posing a problem situation deserving a special treatment. Problem is manifold: The presentation should be informative, entertaining, and educational, all accomplished through an active corporeal and mental participation where interactivity and immersion must be the key. The setting must provide a holistic, comprehensible experience by completing “missing parts and layers,” and contextualizing it, perhaps through a story, a theme, or a background. Any intervention must be non-invasive, reversible and updateable; alternatives and different layers must be presented, preferably, synchronously. Above all, final setting should be subordinate to the primacies of “conservation of cultural heritage,” while providing an intellectually and physically accessible and sustainable overall historical environment. This has been an age-old issue for the scholars, a genuine challenge due to the ill-defined nature of the problem situation itself. The present study departs from the proposition that, Augmented Reality(AR), by definition, has a potential to contribute to such a problem situation. AR is a combination of real and virtual worlds, where “virtual” could complement what was missing in the real and new objects and layers might be woven together, into one new reality where active bodily and mental participation and interaction is possible. Though it might seem implied in the definition, the proposition still needs a rigorous investigation since AR is a rapidly emerging but still quite a young field that has a long way to go; and since, research on AR’s specific adoption to presentation of archaeological sites, apart from few examples, is still an unbeaten path. The present multidisciplinary study aims to take a step towards such an investigation. Established upon a detailed investigation and analysis of examples, the present study involves development of an AR application of a selected case: “Alexandria Troas Podium Temple,” followed by a field study. In the present report, we share our experience and observations of the process and the implementation. In conclusion, we propose that AR is a serious candidate to be a considerable asset for the presentation of archaeological sites for the visitor experience, without compromising the universal norms of conservation of cultural heritage. We also argue that AR seems to have its own agenda, coming with unprecedented possibilities still to be appreciated and adopted, which in turn might help us to go beyond the conventional conceptions and modes of conservation of cultural heritage and presentation.

The aim of this study is to determine whether the resilience levels and mathematics and science process skills of 5-year-old preschoolers vary significantly based on independent variables (gender, number of siblings, education level of the mother, education level of the father, and family income level) and to detect the correlations between them. The sample of the study consisted of 384 children. “Child Information Form, Risk Factors List, Early Childhood Resilience Scale, Early Childhood Mathematics Education Content Standards Scale, and Science Observation Form” were used as data collection tools. In the study, it was determined that there was a significant difference between the resilience levels of children and gender, education level of the father, and family income level. A significant difference was observed between the mathematical skills of the children and the number of siblings, parental education level, and family income level. Also, a significant difference was determined between the science process skill levels of the children and the number of siblings, family income level, and father’s education level. There was a moderate positive correlation between resilience and mathematical skills and a high positive correlation between resilience and science process skills. In addition, it was concluded that the resilience levels of children were a significant predictor of their mathematics and science process skill levels.

The aim of this study was to determine the effect of parental attitudes on the eating behaviors of children attending kindergartens. The population of the study consisted of the parents of children attending independent kindergartens located in Battalgazi and Yesilyurt districts of Malatya province in 2018-2019 school year. The sample of the study was composed of the parents of 284 children attending independent kindergartens affiliated with Battalgazi and Yesilyurt Municipalities in accordance with the sample calculation made over the population. “Parenting Attitude Scale” and “Children’s Eating Behavior Questionnaire” were used to collect the data. According to the results of the normality test and test of homogeneity conducted in the data analysis, while One-way ANOVA and t-test were used for the normally distributed values, Kruskal Wallis H test and Mann Whitney U test were used for the values which were not normally distributed. As a result of the study, no significant difference (p

Beauty parlour stroke syndrome is a stroke syndrome that occurs secondary to hyperextension of the neck due to compression of the vertebral artery in the atlanto-occipital region. It was first defined as “pearl beauty stroke syndrome” in 1992 by Weintraub et al. Vertigo syndrome caused by cervical region pathologies, bad posture of the neck and/or trauma [1]. We present a young, 23-year-old patient who has no disease, no trauma history nor substance-drug use. He was diagnosed with vertigo that started after going to the barber’s and then had an infarction in the cerebellum.

One of the purposes of this study is to develop and test the factor structure of a multidimensional Needs for Meaning Scale (NFMS) and another purpose is to investigate the contribution of needs for meaning fulfillment on experiencing meaning in life by using self-determination theory. Baumeister asserts that meaning in life can be established with the possession of four needs for meaning: need for purpose, need for values and justification, need for efficacy, need for self-worth. To measure NFM, 33-itemed NFMS is constructed. Meaning in life was measured through the Purpose in Life (PIL) test. The data were gathered conveniently from 355 individuals. Both the NFMS and PIL test were investigated through confirmatory factor analyses (CFA) before two structural models were tested. The data were analyzed by means of a SEM analysis using AMOS program. Three different models of NFMS were tested. CFA confirmed four dimensions of NFMS in both a first- and second-order solutions. Additionally, both structural models had a good fit to data and indicated that needs for meaning fulfillment has positive contribution on meaning in life. The fulfillment of need for purpose emerged as the most important predictor of meaning in life. The findings were discussed in the light of explanatory power of the dimensions of needs for meaning on meaning in life.

The aim of this study is to investigate the predictive relationship between authentic leadership and trust to supervisor. The data were collected from 104 employees from a variety of jobs and industries in a collectivistic culture, Turkey. In the scope of this study, existing scales are used to collect data. Employees completed the ten-itemed one factor solution trust to supervisor scale and sixteen-itemed four factor solution authentic leadership scale. Structural equation modeling was conducted to test the research hypothesis. The structural equation modeling results showed a strong positive relationship between authentic leadership and trust to supervisor. The results are discussed along with practical implication, suggestions for future research and limitations.