전시발표 : H 분야: 기타 ; P-116 :

( Aslan Hwanhwi Lee ),( Young Mok Heo ),( Jae-jin Kim ) 韓國木材工學會 2016 한국목재공학회 학술발표논문집 Vol.2016 No.-

ON APPROXIMATION PROPERTIES OF STANCU VARIANT λ-SZÁSZ-MIRAKJAN-DURRMEYER OPERATORS

Aslan, Resat,Rathour, Laxmi The Kangwon-Kyungki Mathematical Society 2022 한국수학논문집 Vol.30 No.3

In the present paper, we aim to obtain several approximation properties of Stancu form Szász-Mirakjan-Durrmeyer operators based on Bézier basis functions with shape parameter λ ∈ [-1, 1]. We estimate some auxiliary results such as moments and central moments. Then, we obtain the order of convergence in terms of the Lipschitz-type class functions and Peetre's K-functional. Further, we prove weighted approximation theorem and also Voronovskaya-type asymptotic theorem. Finally, to see the accuracy and effectiveness of discussed operators, we present comparison of the convergence of constructed operators to certain functions with some graphical illustrations under certain parameters.

The Evaluation of the Conditions for the Non-Null Curves to be Inextensible in Lorentzian 6-Space

Aslan, Muradiye Cimdiker,Unluturk, Yasin Department of Mathematics 2021 Kyungpook mathematical journal Vol.61 No.4

In this study, we obtain various conditions for the non-null curve flows to be inextensible in the 6-dimensional Lorentzian space 𝕃⁶. Then, we find partial differential equations which characterize the family of inextensible non-null curves.

Spatial Variation Ecological Quality Assessment of Live and Dead Molluscan Assemblages in the Aegean Sea

Aslan Herdem,Ovalis Panayotis 한국해양과학기술원 2023 Ocean science journal Vol.58 No.3

For accurate estimation and correct identification of species of EcoQS for macrozoobenthos in MSFD, the distinction between dead and living molluscan specimens is significant. In this study, EcoQS values of Turkish Aegean Sea coasts were calculated separately based on live and dead + live molluscan communities using Shannon–Wiener Indices, Bentix, AMBI, M-AMBI and TUBI biotic indices. A total of 219 mollusks species and 76,170 ind.m−2 were found but only 57 species and 2227 ind. m−2 of them were encountered as live and 2 species (Turbonilla sinuosa and Alvania zaraensis) of dead individuals were identified as new records for the Turkish coasts. Stations with rare live molluscan species numbers have lower ecological qualities than the indices made with dead + live. However, in the presence of opportunistic species among dead + living species, the situation is reversed. In this study, we discuss the results of the aggregation of dead molluscan individuals, and the differences and correlations between the indices according to the different molluscan data sets. Thanks to the aggregation of dead molluscan individuals obtained in the sampling area, information about the anthropogenic disturbances in the recent past can be obtained. While there is a correlation between EcoQS of indices of the dead + live mollusk species, this correlation is not found in only living individuals. Also a similarity was found between M-AMBI and TUBI, which used the Shannon–Wiener index in their calculation.

Simultaneous Degradation of Polycyclic Aromatic Hydrocarbons by Attractive Ligninolytic Enzymes from Phlebia brevispora KUC9045

Aslan Hwanhwi Lee,Hanbyul Lee,Jae-Jin Kim 한국환경생물학회 2016 환경생물 : 환경생물학회지 Vol.34 No.3

The hazards associated with the polycyclic aromatic hydrocarbons (PAHs) are known to be recalcitrant by their structure, but white rot fungi are capable of degrading recalcitrant organic compounds. Phlebia brevispora KUC9045 isolated from Korea was investigated its efficiency of degradation of four PAHs, such as phenanthrene, anthracne, fluoranthene, and pyrene. And the species secreted extracellular laccase and MnP (Manganese dependent peroxidase) during degradation. P. brevispora KUC9045 demonstrated effective degradation rates of phenanthrene (66.3%), anthracene (67.4%), fluoranthene (61.6%), and pyrene (63.3%), respectively. For enhancement of degradation rates of PAHs by the species, Remazol Brilliant Blue R (RBBR) was preferentially supplemented to induce ligninolytic enzymes. The biodegradation rates of the three PAHs including phenanthrene, fluoranthene, and pyrene were improved as higher concentration of Remazol Brilliant Blue R was supplemented. However, anthracene was degraded with the highest rate among four PAHs after two weeks of the incubation without RBBR addition. According to the previous study, RBBR can be clearly decolorized by P. brevispora KUC9045. Hence, the present study demonstrates simultaneous degradation of dye and PAHs by the white rot fungus. And it is considered that the ligninolytic enzymes are closely related with the degradation. In addition, it indicated that dye waste water might be used to induce ligninolytic enzymes for effective degradation of PAHs.

Cross-Cultural Adaptation, Validation, and Reliability Testing of the Modified Oswestry Disability Questionnaire in Persian Population with Low Back Pain

Aslan Baradaran,Mohammad H. Ebrahimzadeh,Ali Birjandinejad,Amir Reza Kachooei 대한척추외과학회 2016 Asian Spine Journal Vol.10 No.2

Study Design: Prospective study. Purpose: We aimed to validate the Persian version of the modified Oswestry disability questionnaire (MODQ) in patients with low back pain. Overview of Literature: Modified Oswestry low back pain disability questionnaire is a well-known condition-specific outcome measure that helps quantify disability in patients with lumbar syndromes. Methods: To test the validity in a pilot study, the Persian MODQ was administered to 25 individuals with low back pain. We then enrolled 200 consecutive patients with low back pain to fill the Persian MODQ as well as the short form 36 (SF-36) questionnaire. Convergent validity of the MODQ was tested using the Spearman’s correlation coefficient between the MODQ and SF-36 subscales. Intraclass correlation coefficient (ICC) and Cronbach’s α coefficient were measured to test the reliability between test and retest and internal consistency of all items, respectively. Results: ICC for individual items ranged from 0.43 to 0.80 showing good reliability and reproducibility of each individual item. Cronbach’s α coefficient was 0.69 showing good internal consistency across all 10 items of the Persian MODQ. Total MODQ score showed moderate to strong correlation with the eight subscales and the two domains of the SF-36. The highest correlation was between the MODQ and the physical functioning subscale of the SF-36 (r =−0.54, p <0.001) and the physical component domain of the SF-36 (r =−0.55, p <0.001) showing that MODQ is measuring what it is supposed to measure in terms of disability and physical function. Conclusions: Persian version of the MODQ is a valid and reliable tool for the assessment of the disability following low back pain.

Variations in the Origin of Inferior Phrenic Arteries and Their Relationship to Celiac Axis Variations on CT Angiography

Ramazan Aslaner,Yeliz Pekcevik,Hilal Sahin,Onur Toka 대한영상의학회 2017 Korean Journal of Radiology Vol.18 No.2

Objective: Knowing the origin of the inferior phrenic artery (IPA) is important prior to surgical interventions and interventional radiological procedures related to IPA. We aimed to identify variations in the origin of IPA and to investigate the relationship between the origin of IPA and celiac axis variations using computed tomography angiography (CTA). Materials and Methods: The CTA images of 1000 patients (737 male and 263 female, the mean age 60, range 18–94 years) were reviewed in an analysis of IPA and celiac axis variations. The origin of IPA was divided into two groups, those originating as a common trunk and those originating independently without a truncus. The relationship between the origin of IPA and celiac axis variation was analyzed using Pearson’s chi-square test. Results: Both IPAs originated from a common trunk in 295 (29.5%) patients. From which the majority of the common trunk originated from the aorta. Contrastingly, the inferior phrenic arteries originated from different origins in 705 (70.5%) patients. The majority of the right inferior phrenic artery (RIPA) and the left inferior phrenic artery (LIPA) originated independently from the celiac axis. Variation in the celiac axis were detected in 110 (11%) patients. The origin of IPA was found to be significantly different in the presence of celiac axis variation. Conclusion: The majority of IPA originated from the aorta in patients with a common IPA trunk, while the majority of RIPA and LIPA originating from the celiac axis in patients without a common IPA trunk. Thus, the origin of IPA may widely differ in the presence of celiac axis variation.

Cardiovascular Surgery Patients: Intensive Care Experiences and Associated Factors

Ozlem Aslan,Betül Tosun 한국간호과학회 2015 Asian Nursing Research Vol.9 No.4

Purpose: The purpose of this study was to determine the intensive care unit (ICU) experiences of cardiovascular surgery (CS) patients and to define the associations between their ICU experiences and related factors. Methods: The study used a descriptive design. In total, 106 CS patients were interviewed at least 24 hours after discharge from an ICU in an educational research hospital in Ankara, Turkey between January and July 2012. Data were collected using the Intensive Care Experience Scale (ICES), a sociodemographic and clinical characteristics data form and two open-ended questions inquiring about smells and light. Statistical analyses were conducted using SPSS 15.0. Results: The patients were moderately aware of their ICU environments, partly recalled their ICU experiences, highly recollected frightening experiences, and expressed good satisfaction with care. Age, education, marital status, and pain were associated with ICU experiences. Patients who sensed smell had higher scores of frightening experiences than those who did not. Patients who were annoyed with excessive light reported less satisfaction with care than those who were not. Conclusions: The results suggest that measuring the patients' characteristics and environmental factors may be beneficial for healthcare teams to improve the recovery of CS patients in the ICU.

Women officials of the Turkish Diyanet : Gendered transformations and predicaments of empowerment?

Canan Aslan Akman 이화여자대학교 한국여성연구원 2021 Asian Journal of Women's Studies(AJWS) Vol.27 No.2

The Presidency of Religious Affairs (the Diyanet) is a unique bureaucratic structure authorized to address the religious service needs of citizens in Turkey’s secular system. For a long time, it was characterized by underrepresentation of women in its ranks. The longstanding quest of educated religious women for recognition of their expertise and integration into this institution coincided with a policy reorientation in the early 2000s, to expand the Diyanet’s appeal for women through its enlightenment and educational functions. Under the Justice and Development Party (AKP) governments, the issue of gender disparity has been addressed through a new strategy of increasingly recruiting women graduates from Theology faculties. However, despite a ‘feminization’ process undertaken via the pro-women reforms of its organizational structure, the Diyanet’s institutional and political-ideological limitations are intertwined with prevailing gender norms and patriarchal conventions. This article inquires into the gendered dynamics and predicaments that have constrained the status and roles of its women officials and impacted their empowerment prospects. Nevertheless, as women have started to exercise religious authority with men in the Diyanet’s enduring male-dominated structure, the recognition for their expertise, professional commitment, and the potential impact of their work have reinforced the social significance of women’s roles. Türkiye’nin laik sistemi içerisinde, Diyanet İşleri Başkanlığı, (the Diyanet), vatandaşların dini hizmet ihtiyaçlarını karşılamakla görevli özgün bir bürokratik yapıdır. Kurumda görev yapanlar arasında kadınlar çok uzun bir dönem azınlıkta olmuşlardır. Eğitimli dindar kadınların süregelen ve uzmanlıklarının tanınması ve kuruma entegre edilmesi talepleri, 2000’lerin başında Diyanet’in aydınlatma ve eğitim işlevleri yoluyla kadınlara daha fazla ulaşabilmek amacıyla başlattığı bir politika değişikliğini de beraberinde getirmiştir. Adalet ve Kalkınma Partisi (AKP) hükümetleri döneminde, İlahiyat Fakültesi mezunu kadınların artan sayıda istihdam edilmesiyle kurumdaki toplumsal cinsiyet dengesizliğine karşı bir açılım gerçekleştirilmiştir. Ancak, yapısındaki kadınlar lehine gercekleştirilen reformlar ile ortaya çıkan ‘kadınlaşma’ sürecine rağmen, Diyanet’in kurumsal ve siyasi-ideolojik kısıtları gayri resmi toplumsal cinsiyet normları ve erkek egemen geleneklerle içiçe geçmiş şekilde etkin olmaktadır. Bu makalede, toplumsal cinsiyet dinamiklerinin etkisiyle kadın din görevlilerinin statüleri ve rollerini belirleyen ve güçlenme olasılıklarını etkileyen açmazlar incelenmektedir. Bununla birlikte, kadın din görevlilerinin rollerinin toplumsal önemi, devam eden erkek-egemen yapı içerisinde dini otoriteyi kullanma sürecinde uzmanlıklarının kabul görmesi, mesleklerine bağlılıkları ve çalısmalarının potansiyel etkisi dolayısıyla güçlenmektedir.

Simultaneous Degradation of Polycyclic Aromatic Hydrocarbons by Attractive Ligninolytic Enzymes from Phlebia brevispora KUC9045

Lee, Aslan Hwanhwi,Lee, Hanbyul,Kim, Jae-Jin Korean Society of Environmental Biology 2016 환경생물 : 환경생물학회지 Vol.34 No.3

The hazards associated with the polycyclic aromatic hydrocarbons (PAHs) are known to be recalcitrant by their structure, but white rot fungi are capable of degrading recalcitrant organic compounds. Phlebia brevispora KUC9045 isolated from Korea was investigated its efficiency of degradation of four PAHs, such as phenanthrene, anthracne, fluoranthene, and pyrene. And the species secreted extracellular laccase and MnP (Manganese dependent peroxidase) during degradation. P. brevispora KUC9045 demonstrated effective degradation rates of phenanthrene (66.3%), anthracene (67.4%), fluoranthene (61.6%), and pyrene (63.3%), respectively. For enhancement of degradation rates of PAHs by the species, Remazol Brilliant Blue R (RBBR) was preferentially supplemented to induce ligninolytic enzymes. The biodegradation rates of the three PAHs including phenanthrene, fluoranthene, and pyrene were improved as higher concentration of Remazol Brilliant Blue R was supplemented. However, anthracene was degraded with the highest rate among four PAHs after two weeks of the incubation without RBBR addition. According to the previous study, RBBR can be clearly decolorized by P. brevispora KUC9045. Hence, the present study demonstrates simultaneous degradation of dye and PAHs by the white rot fungus. And it is considered that the ligninolytic enzymes are closely related with the degradation. In addition, it indicated that dye waste water might be used to induce ligninolytic enzymes for effective degradation of PAHs.