2,522 research outputs found
Scorzonera coriacea A. Duran & Aksoy (Asteraceae, Cichorieae), a new species from South Anatolia, Turkey
No full textDURAN, A., B. DOGAN, E. HAMZAOGLU & A. AKSOY (2011). Scorzonera coriacea A. Duran & Aksoy (Asteraceae, Cichorieae), a new species from South Anatolia, Turkey. Candollea 66: 353-359, In English, English and French abstracts
Buket Uzuner’i Halit Ziya’ya bağlayan Aşk-ı Memnu : İki romanda babalar ve kızları
No full textAksoy, Süreyya Elif (Dogus Author)Buket Uzuner'in İstanbullular (2007) ve Halit Ziya Uşakiıgil'in Aık-ı Memnu (1900) romanlarında baba-kız ilişkileri dikkat çekicidir. İstanbullular'da Belgin, Ajk-ı Memnu'da Nihal, benliklerinin oluşumunda büyük ölçüde babalarına bağlı, babalarından erken yaşta uzaklaşmak zorunda kaldıkları halde onlardan gerçek anlamda hiçbir zaman kopamamış, hep "babasının kızı" olarak kalmış karakterlerdir. İki karakterin babalarıyla ilişkileri ortak bir zemin üzerinde gelişir. ..
Multi-Label Noise Robust Collaborative Learning for Remote Sensing Image Classification
No full textThe development of accurate methods for multi-label classification (MLC) of remote sensing (RS) images is one of the most important research topics in RS. The MLC methods based on convolutional neural networks (CNNs) have shown strong performance gains in RS. However, they usually require a high number of reliable training images annotated with multiple land-cover class labels. Collecting such data is time-consuming and costly. To address this problem, the publicly available thematic products, which can include noisy labels, can be used to annotate RS images with zero-labeling cost. However, multi-label noise (which can be associated with wrong and missing label annotations) can distort the learning process of the MLC methods. To address this problem, we propose a novel multi-label noise robust collaborative learning (RCML) method to alleviate the negative effects of multi-label noise during the training phase of a CNN model. RCML identifies, ranks, and excludes noisy multi-labels in RS images based on three main modules: 1) the discrepancy module; 2) the group lasso module; and 3) the swap module. The discrepancy module ensures that the two networks learn diverse features, while producing the same predictions. The task of the group lasso module is to detect the potentially noisy labels assigned to multi-labeled training images, while the swap module is devoted to exchange the ranking information between two networks. Unlike the existing methods that make assumptions about noise distribution, our proposed RCML does not make any prior assumption about the type of noise in the training set. The experiments conducted on two multi-label RS image archives confirm the robustness of the proposed RCML under extreme multi-label noise rates. Our code is publicly available at: https://www.noisy-labels-in-rs.org
Validity and reliability of the Sustainable HEalthy Diet (SHED) index by comparison with EAT-Lancet diet, Mediterranean diet in Turkish adults
No full textBackground: Food consumption and diet are strongly associated with sustainability. The Sustainable HEalthy Diet index was developed to measure the nutritional, environmental, and sociocultural components of sustainable diets and healthy eating patterns. However, a methodological approach has yet to be proposed for Turkish adults. This study aimed to determine the validity and reliability of the SHED index in Turkish adults. Methods: Data were collected from 558 healthy adults using a web-based questionnaire. Internal consistency reliability was evaluated using Cronbach's alpha coefficient, and repeatability was evaluated using the test-retest method. Construct validity was investigated using the EAT-Lancet diet and the Mediterranean Diet Adherence Screener (MEDAS), and the adapted SHED index structures' accordance was evaluated with confirmatory factor analysis. Results: Good reliability and repeatability were found (r = 0.758 and 0.795, respectively). A higher SHED index score was related to a greater intake of grains, fruits, and vegetables and a lower intake of meat, eggs, and dairy compared to EAT-Lancet diet food groups. A higher SHED index score was associated with a lower saturated fat and added sugar intake. While the SHED index was associated with greater adherence to the Mediterranean diet (r = 0.334, p < 0.001), it was negatively associated with non-alcoholic and diet non-alcoholic beverage consumption (r = -0.257 and -0.264, respectively; p < 0.001). Conclusion: The SHED index showed good validity and reliability in Turkish adults. Our results suggest that the SHED index can be used in epidemiological and intervention studies because it allows the measurement of diets in terms of health and sustainability to propose adaptations accordingly
CYTOGENETIC EFFECTS OF ELECTROMAGNETIC FIELDS FROM TELEVISION ON ALLIUM CEPA L. ROOT TIP CELLS
No full textAllium cepa bulbs were exposed for eight hours a day for three days at electromagnetic fields from television. Five bulbs were set up for each group (0.25 m, 0.50 m, 1 m and 2 m distances from television). Mitotic index, phase frequencies and chromosome aberrations were evaluated in exposed groups as compared with control group. Data obtained showed that electromagnetic fields from television significantly increased the mitotic index at close distances. However, there were no significantly differences in the phase frequencies and chromosome aberrations frequencies
Investigation of Wolbachia spp. and Spiroplasma spp. in Phlebotomus species by molecular methods
No full textThe aim of this study was to determine the presence of Wolbachia spp. and Spiroplasma spp. in natural populations of sand flies in Turkey by molecular methods. A total of 40 Phlebotomus specimens (19 female and 21 male) were used in this study. Genomic DNA from whole sand flies was isolated and Wolbachia spp. infection prevalence was investigated by using Wolbachia gene specific primer sets (wsp and GroEL). In addition, the DNA were analyzed for the presence of Spiroplasma infections utilizing bacterium specific 16 S rDNA PCR-amplification primers. Results of this analysis showed a Wolbachia infection prevalence of 70% (28/40). There was no sex-bias in infection prevalence, being 76% (16/21) and 63% (12/19) in males and females, respectively. Analysis of Spiroplasma infections indicated that 26% (5/19) of female sand flies were positive for infection, while none of the screened males (0/21) were positive. Of the 40 sand fly samples, only 2 were found to be positive for both Wolbachia spp. and Spiroplasma spp. The present study demonstrates the presence of Wolbachia and Spiroplasma infections in the natural sand fly populations in Turkey. This is the first report on Spiroplasma infection in the sand flies from Turkey. © 2018 The Author(s).This study was supported by TUBITAK (The Scientific and Technical Research Council of Turkey) (TUBITAK, BIDEB-2219). We are grateful to all the members of the Aksoy Lab for their contributions to the project especially Dr. Geoffrey M. Attardo for preparing tubulin primers and comments on the manuscript, Maria Gorreti Onyango, Michelle O’Neill and Yineng Yang for helping in Molecular Systematics Laboratory. We also thank Prof. Dr. Yusuf ÖZBEL for providing Phlebotomus samples that were collected for a previous TUBİTAK project (project number:112T270). We thank Mehmet Karakus from Aksoy laboratory for his critical reading of the paper. This study was presented at the XX. National Congress of Parasitology (25-29 September 2017, Eskişehir-Turkey)
Determining Sustainable Food Choice Motives: Validity and Reliability of the Sustainable Food Choice Questionnaire (SUS-FCQ) in Turkish Adults
No full textUnderstanding sustainable food choices is key to shifting consumer behavior toward sustainable food consumption. This study aimed to determine the validity and reliability of the Sustainable Food Choice Questionnaire (SUS-FCQ) in 602 Turkish adults. The linguistic equivalence of the SUS-FCQ was provided using the standard translation–back translation method, content validity, and pilot testing. Then, the convergent, discriminant, and construct (exploratory factor analysis (EFA) and confirmatory factor analysis (CFA)) validity and reliability (test–retest and internal consistency) were evaluated. Cronbach’s alpha coefficient was found to be excellent (0.961) and the intraclass correlation coefficient was found to be moderate (0.689) using the test–retest method. As a result of the EFA, two-factor structures were found, and the factor loadings of the items were 0.651 and 0.878. These factors explained 79.17% of the total variance, and discriminant and convergent validity was provided for both factors. The results of this study suggest that the adapted SUS-FCQ is valid and reliable for determining sustainable food choice motives in the Turkish population. Therefore, the SUS-FCQ can be a useful instrument to encourage people to shift toward and adhere to sustainable food consumption
Relative measures in service research
No full textPurpose - The purpose of this paper is to introduce an alternative novel approach to measurement of customer perceptions of the service experience that links closely with customer loyalty outcomes.
Design/methodology/approach - This conceptual paper draws upon prior theory and empirical research to investigate the relevance of using relative metrics compared to absolute metrics in service research.
Findings - The findings upon which this paper draws upon show that measuring customer satisfaction, likelihood to recommend, brand preference using absolute metrics explain a very small per cent of the variance in key customer outcome measures such as share of wallet. Instead, a relative approach to these and other measures in service research is proposed.
Practical implications - Although business practice has embraced relative measurement much more extensively than has scientific research, the vast majority of customer experience measurement programs today continue to employ absolute measures resulting in suboptimal allocation of firm resources. This paper is a call to rethink these current measurement practices.
Originality/value - It is one of the first papers to argue for changing the widely employed use of absolute metrics in theory and practice in favor of relative metrics. Application to other service research theories is discussed
Merve Aksoy-An Investigation on the Effects of Block Play on the Creativity of Children
No full textBlock play and creativity dataset</b
Who are the net food importing countries ?
No full textThe purpose of this paper is to update the information on net food importing countries, using different definitions of food, separating countries by their level of income, whether they are in conflict and whether they are significant oil exporters. The study also estimates the changes in net food importing status of these countries over the last two and a half decades, and, most important, the study measures the relative importance of these net food imports in the import basket of the countries. Our results show that while many low-income countries are net food importers, the importance and potential impact of the net food importing status has been highly exaggerated. Many low-income countries that have larger food deficits are either oil exporters or countries in conflict. Food deficits of most low-income countries are not that significant as a percentage of their imports. Our results also show that only 6 low-income countries have food deficits that are more than 10 percent of their imports. Last two decades have seen a significant improvement in the food trade balances of low-income developing countries. SSA low-income countries are an exception to this trend. On the other hand, there are a group of countries which are experiencing civil conflicts which are large importers of food, and these countries can not meet their basic needs. They also need special assistance in the distribution of food within their boundaries. Therefore, one should modify the WTO Ministerial Declaration, and focus on these conflict countries rather than the broad net food importers.Food&Beverage Industry,Emerging Markets,Currencies and Exchange Rates,Economic Theory&Research,
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