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ON SYMMETRIC BI-DERIVATIONS OF B-ALGEBRAS
Kayis, Sibel Altunbicak,Ozbal, Sule Ayar Korean Mathematical Society 2016 대한수학회논문집 Vol.31 No.2
In this paper, we introduce the notion of symmetric bi-derivations of a B-algebra and investigate some related properties. We study the notion of symmetric bi-derivations of a 0-commutative B-algebra and state some related properties.
Korean College Students` Reflexive Positions Toward Extensive Reading and Follow-up Activities
( Hayriye Kayi Aydar ) 21세기영어영문학회 2012 영어영문학21 Vol.25 No.1
Extensive reading activities are believed to be an effective way of increasing literacy and language development. Although previous work focused on the relation between extensive reading and overall linguistic competence and learner attitudes, the perspectives of language learners toward the post activities of extensive reading have not been adequately addressed. The study reported in this article was conducted to illuminate how English major and non English major students at a university in South Korea positioned themselves with regards to the follow-up extensive reading activities. Through a recursive analysis of interview data, survey, field notes, and student journal entries, the findings demonstrated that although a majority of students positioned themselves as tolerant and competent when they engaged in extensive reading activities, they positioned themselves as less capable in the required post-reading tasks. In light of the findings, implications for extensive reading activities and roles of teachers are discussed.
Leading order analysis of neutrino induced dimuon events in the CHORUS experiment
CHORUS Collaboration,Kayis-Topaksu, A.,Onengut, G.,van Dantzig, R.,de Jong, M.,Oldeman, R.G.C.,Guler, M.,Kama, S.,Kose, U.,Serin-Zeyrek, M.,Tolun, P.,Catanesi, M.G.,Muciaccia, M.T.,Bulte, A.,Winter, K North Holland 2008 Nuclear Physics, Section B Vol. No.
We present a leading order QCD analysis of a sample of neutrino induced charged-current events with two muons in the final state originating in the lead-scintillating fibre calorimeter of the CHORUS detector. The results are based on a sample of 8910 neutrino and 430 antineutrino induced opposite-sign dimuon events collected during the exposure of the detector to the CERN Wide Band Neutrino Beam between 1995 and 1998. The analysis yields a value of the charm quark mass of m<SUB>c</SUB>=(1.26+/-0.16+/-0.09)GeV/c<SUP>2</SUP> and a value of the ratio of the strange to non-strange sea in the nucleon of κ=0.33+/-0.05+/-0.05, improving the results obtained in similar analyses by previous experiments.
An ESL Teacher's Perspective on Recasts: A Qualitative Exploration of "When" and "How"?
Byun, Ji-Hyun,Kayi-Aydar, Hayriye The English Teachers Association in Korea 2010 영어어문교육 Vol.16 No.4
Recasts, which are defined as implicit types of corrective feedback, have been the focus of numerous SLA researchers for more than a decade. A range of classroom-based observational and experimental research studies have explored how and when language teachers provide recasts to learners' ill-formed utterances and aimed to understand the role of recasts in language acquisition or learning. On the basis of previous studies on recasts, our study investigated when an ESL teacher provided recasts and how recasts were provided in his class. The research questions were as follows: (1) When does an ESL teacher provide recasts? (2) How does the teacher provide recasts? The data came from observations of one ESL classroom as well as consecutive-semi structured interviews with the teacher. The data analysis included transcriptions of teacher-student interactions in the target setting and categories of recasts according to the linguistic phenomena, which prompted recasting. Based on the findings, practical suggestions for ESL teachers were provided. [156 words].
An ESL Teacher's Perspective on Recasts : A Qualitative Exploration of "When" and "How"?
Ji-Hyun Byun,Hayriye Kayi-Aydar 한국영어어문교육학회 2010 영어어문교육 Vol.16 No.4
Recasts, which are defined as implicit types of corrective feedback, have been the focus of numerous SLA researchers for more than a decade. A range of classroom-based observational and experimental research studies have explored how and when language teachers provide recasts to learners' ill-formed utterances and aimed to understand the role of recasts in language acquisition or learning. On the basis of previous studies on recasts, our study investigated when an ESL teacher provided recasts and how recasts were provided in his class. The research questions were as follows: (1) When does an ESL teacher provide recasts? (2) How does the teacher provide recasts? The data came from observations of one ESL classroom as well as consecutive-semi structured interviews with the teacher. The data analysis included transcriptions of teacher-student interactions in the target setting and categories of recasts according to the linguistic phenomena, which prompted recasting. Based on the findings, practical suggestions for ESL teachers were provided.
Utkan, Gungor,Urun, Yuksel,Cangir, Ayten Kayi,Kilic, Dalokay,Ozdemir, Nuriye Yildirim,Oztuna, Derya Gokmen,Bulut, Erhan,Arslan, Ulku Yalcintas,Kocer, Murat,Kavukcu, Sevket,Icli, Fikri Asian Pacific Journal of Cancer Prevention 2013 Asian Pacific journal of cancer prevention Vol.14 No.1
Background: Malignant mesothelioma (MM) is an aggressive tumor of mesothelial surfaces. Previous studies have observed an association between ABO blood groups and risk of certain malignancies, including pancreatic and gastric cancer; however, no information on any association with MM risk is available. The aim of this study was to investigate possible associations amoong MM clinicopathological features and ABO blood groups and Rh factor. Materials and Methods: In 252 patients with MM, the ABO blood group and Rh factor were examined and compared with the control group of 3,022,883 healthy volunteer blood donors of Turkish Red Crescent between 2004 and 2011. The relationship of blood groups with various clinicopathological features were also evaluated in the patient group. Results: The median age was 55 (range: 27-86) and 61.5% of patients were male. While 82.8% of patients had a history of exposure to asbestos, 60.7% of patients had a smoking history. Epithelioid (65.1%) was the most common histology and 18.7% of patients had mixed histology. Overall, the ABO blood group distribution of the 252 patients with MM was comparable with the general population. The median overall survival (OS) was 14 months (95% confidence interval, 11.3-16.6 months). The median OS for A, B, AB, and O were 11, 15, 16, and 15 months respectively (p=0.396). First line chemotherapy was administered to 118 patients. The median OS of patients on pemetrexed or gemcitabine was longer than patient who was not administered chemotherapy [17 months (95%CI, 11.7-22.2) vs. 9 months (95%CI, 6.9-11.0); p<0.001]. Conclusions: The results of this study suggest that patients with MM can benefit from treatment with pemetrexed or gemcitabine in combination with cisplatin. We did not observe a statistically significant association between ABO blood group and risk of MM.
Association of ABO Blood Group and Risk of Lung Cancer in a Multicenter Study in Turkey
Urun, Yuksel,Utkan, Gungor,Cangir, Ayten Kayi,Oksuzoglu, Omur Berna,Ozdemir, Nuriye,Oztuna, Derya Gokmen,Kocaman, Gokhan,Coskun, Hasan Senol,Kaplan, Muhammet Ali,Yuksel, Cabir,Demirkazik, Ahmet,Icli, Asian Pacific Journal of Cancer Prevention 2013 Asian Pacific journal of cancer prevention Vol.14 No.5
Background: The ABO blood groups and Rh factor may affect the risk of lung cancer. Materials and Methods: We analyzed 2,044 lung cancer patients with serologically confirmed ABO/Rh blood group. A group of 3,022,883 healthy blood donors of Turkish Red Crescent was identified as a control group. We compared the distributions of ABO/Rh blood group between them. Results: The median age was 62 years (range: 17-90). There was a clear male predominance (84% vs. 16%). Overall distributions of ABO blood groups were significantly different between patients and controls (p=0.01). There were also significant differences between patients and controls with respect to Rh positive vs. Rh negative (p=0.04) and O vs. non-O (p=0.002). There were no statistically significant differences of blood groups with respect to sex, age, or histology. Conclusions: In the study population, ABO blood types were associated with the lung cancer. Having non-O blood type and Rh-negative feature increased the risk of lung cancer. However, further prospective studies are necessary to define the mechanisms by which ABO blood type may influence the lung cancer risk.
Demir, Nalan,Enon, Serkan,Turksoy, Vugar Ali,Kayaalti, Zeliha,Kaya, Seda,Cangir, Ayten Kayi,Soylemezoglu, Tulin,Savas, Ismail Asian Pacific Journal of Cancer Prevention 2014 Asian Pacific journal of cancer prevention Vol.15 No.7
Background: To evaluate association of lung cancer with arsenic and cadmium levels measured in tumor tissue. Materials and Methods: Ninety-five patients with lung cancer tumor tissue obtained surgically were included in this study. Arsenic and cadmium levels were measured and levels of metals were compared among types of lung cancer and with reference to patient data. Results: The histopathologic diagnoses of the 95 cases were SCC, 49, adenocarcinoma, 28, large cell, 11 and SCLC, 1. Mean tumor arsenic and cadmium levels were $149.3{\pm}129.1{\mu}g/kg$ and $276.3{\pm}219.3{\mu}g/kg$, respectively. Cadmium levels were significantly associated with smoking (p=0.02), histopathologic type (p=0.005), and TNM staging (r=0.325; p=0.001), although arsenic was not related to any parameter (p>0.05). There was no relation between metal levels and mortality (p>0.05). Conclusions: We found a significant association between tumor cadmium levels of patients with lung cancer and smoking, histopathologic type and staging, although there was no relation with arsenic levels.