123 research outputs found
Selim İleri’nin Yarın Yapayalnız Romanında Farklı Bir Başkarakter: Handan Sarp
No full textSelim İleri is an important author distinguished with his novels stories, senarioes and the studies in Turkish Literature. In his lost novel, Yarın Yapayalnız, he has introduced a different character to us. This novel has dealt with a love, between oparate artist Handan Sarp and Elem, who is dress-maker. İleri has given us this love from many different aspects.</p
Rings having normality in terms of the Jacobson radical
No full textA ring R is defined to be J-normal if for any a, r∈ R and idempotent e∈ R, ae= 0 implies Rera⊆ J(R) , where J(R) is the Jacobson radical of R. The class of J-normal rings lies between the classes of weakly normal rings and left min-abel rings. It is proved that R is J-normal if and only if for any idempotent e∈ R and for any r∈ R, R(1 - e) re⊆ J(R) if and only if for any n≥ 1 , the n× n upper triangular matrix ring Un(R) is a J-normal ring if and only if the Dorroh extension of R by Z is J-normal. We show that R is strongly regular if and only if R is J-normal and von Neumann regular. For a J-normal ring R, it is obtained that R is clean if and only if R is exchange. We also investigate J-normality of certain subrings of the ring of 2 × 2 matrices over R. © 2018, The Author(s)
A perspective on amalgamated rings via symmetricity
No full text5th International Conference Noncommutative Rings and their Applications -- JUN 12-15, 2017 -- Univ Artois, Lens, FRANCEWOS: 000473290900019In this paper, we deal with some versions of reversibility and symmetricity on amalgamated rings along an ideal.Ahi Evran University Scientific Research Projects Coordination UnitAhi Evran University [FEF.A4.16.001]The first author was supported by Ahi Evran University Scientific Research Projects Coordination Unit. Project Number: FEF.A4.16.001
Prevalence of Primary Open Angle Glaucoma in a Rural Adult Chinese Population: The Handan Eye Study
No full textPURPOSE. To estimate the prevalence and associations of primary open angle glaucoma (POAG) in a rural population of northern China. METHODS. In a rural county in Handan, China, 6716 adults residing in 13 villages were randomly selected and participated in the study. All participants completed a comprehensive eye examination, including intraocular pressure (IOP), slit-lamp examination, and fundus evaluation. Visual fields were obtained with on glaucoma suspects. RESULTS. Sixty-five persons (1.2%) had POAG, with an adjusted prevalence of 1.0% (95% confidence interval [CI], 0.7% - 1.3%) in those aged 40 years and older. Sex was not significantly associated with POAG (P > 0.05). Age (odds ratio [OR], 1.9; 95% CI, 1.4-2.5, for each 10-year increase), IOP (OR, 1.5; 95% CI 1.2-2.0 for each 5-mm Hg increase), axial length (OR, 1.3; 95% CI, 1.1-1.6), and moderate myopia (3.1-6.0 D; OR, 4.7; 95% CI, 1.6-13.5) increased the risk for POAG in multivariate analysis. The mean IOP of persons with POAG was 16.3 +/- 3.5 mm Hg, and 90% of them presented with an IOP <= 21 mm Hg. Of those with POAG, 4.5% were blind from glaucoma in at least one eye. CONCLUSIONS. Approximately 1% of adults aged 40 years and older living in rural China have POAG. As seen in other populations, increasing age, higher IOP, greater axial length, and having myopia were associated with POAG. Given the rapid aging and myopic shift (acquired myopia) in China's population, POAG is likely to increase in prevalence in the coming decades. (Invest Ophthalmol Vis Sci. 2011;52:8250-8257) DOI: 10.1167/iovs.11-7472OphthalmologySCI(E)0ARTICLE118250-82575
Transformation and revival: Research on urban development strategic planning for HanDan under the dual dilemma of resourcebased industry transition and regional spatial marginalization
No full textSecondary post-industrial cities in China are facing two problems. In order to promote the sustainable transformation of cities, the Chinese central government promoted “new industrialization” in 2002. This concept aims to eliminate heavy industry enterprises to create a better urban environment. Due to the imbalance in the industrial structure and loss of talent and labor, these resource-based industrial cities are facing the dilemma of industrial upgrading. On the other hand, as regional cooperation is considered extremely important in the new stage of industrialization, the central government started to promote “urban agglomeration” as a key approach to such cooperation. However, due to the complex administrative system and the unequal competition between the central and other cities, the secondary cities cannot really benefit from regionalization and are gradually spatially marginalized. The two problems form a vicious circle, hindering the sustainable upgrade of these secondary resource-based industrial cities. This project aims to study how to use spatial planning and strategic interventions to help secondary (post-) resource-based industrial cities seek better sustainability and development. To achieve this, Handan, a secondary city with a nearly 10 million population surrounded by four mega-regions, is selected as the research object. This city suffers from the development limitation of “in-between megaregions” and the threat of hindrance of heavy industrial enterprises. Except for the disadvantages, it is a city with a long history and splendid culture which could provide great potential to develop into a new type innovative metropolis.Architecture, Urbanism and Building Sciences | Complex Citie
EXTENSIONS OF STRONGLY pi-REGULAR RINGS
No full textWOS: 000334569900021An ideal I of a ring R is strongly pi-regular if for any x is an element of I there exist n is an element of N and y is an element of I such that x(n) x(n+l)y. We prove that every strongly pi-regular ideal of a ring is a B-ideal. An ideal I is periodic provided that for any x is an element of I there exist two distinct m, n is an element of N such that x(m) = x(n). Furthermore, we prove that an ideal I of a ring R is periodic if and only if I is strongly pi-regular and for any u is an element of U(I), u(-1) is an element of Z[u].Natural Science Foundation of Zhejiang ProvinceNatural Science Foundation of Zhejiang Province [LY13A010019]The research of the author was supported by the Natural Science Foundation of Zhejiang Province (LY13A010019)
Semicommutativity of the rings relative to prime radical
No full textsummary:In this paper, we introduce a new kind of rings that behave like semicommutative rings, but satisfy yet more known results. This kind of rings is called -semicommutative. We prove that a ring is -semicommutative if and only if is -semicommutative if and only if is -semicommutative. Also, if is -semicommutative, then is -semicommutative. The converse holds provided that is nilpotent and is power serieswise Armendariz. For each positive integer , is -semicommutative if and only if is -semicommutative. For a ring of bounded index and a central nilpotent element , is -semicommutative if and only if is -semicommutative. If is the ring of a Morita context with zero pairings, then is -semicommutative if and only if and are -semicommutative. Many classes of such rings are constructed as well. We also show that the notions of clean rings and exchange rings coincide for -semicommutative rings
Vaccine hesitancy and refusal among parents: An international ID-IRI survey
No full textIntroduction: Although vaccines are the safest and most effective means to prevent and control infectious diseases, the increasing rate of vaccine hesitancy and refusal (VHR) has become a worldwide concern. We aimed to find opinions of parents on vaccinating their children and contribute to available literature in order to support the fight against vaccine refusal by investigating the reasons for VHR on a global scale.Methodology: In this international cross-sectional multicenter study conducted by the Infectious Diseases International Research Initiative (ID-IRI), a questionnaire consisting of 20 questions was used to determine parents' attitudes towards vaccination of their children.Results: Four thousand and twenty-nine (4,029) parents were included in the study and 2,863 (78.1%) were females. The overall VHR rate of the parents was found to be 13.7%. Nineteen-point three percent (19.3%) of the parents did not fully comply with the vaccination programs. The VHR rate was higher in high-income (HI) countries. Our study has shown that parents with disabled children and immunocompromised children, with low education levels, and those who use social media networks as sources of information for childhood immunizations had higher VHR rates (p < 0.05 for all).Conclusions: Seemingly all factors leading to VHR are related to training of the community and the sources of training. Thus, it is necessary to develop strategies at a global level and provide reliable knowledge to combat VHR.Keywords: Vaccine hesitancy; parents; vaccine refusal.Copyright (c) 2022 Yakup Cag, Mohammad Emad al Madadha, Handan Ankarali, Yasemin Cag, Kubra Demir Onder, Aysegul Seremet-Keskin, Filiz Kizilates, Rok Civljak, Ghaydaa Shehata, Handan Alay, Sevil Alkan-Ceviker, Fatma Yilmaz-Karadag, Meliha Cagla-Sonmezer, Manar Ezzelarab Ramadan, Dumitru Irina Magdelena, Ljiljana Betica Radic, Jurica Arapovic, Fatma Kesmez-Can, Nagwa Mostafa El-Sayed, Oladapo Babatunde Campbell, Gulden Eser-Karlidag, Reham Khedr, Mehmet Emirhan Isik, Michael Mihailov Petrov, Roxana Cernat, Umran Erturk, Yesim Uygun-Kizmaz, Eva Huljev, Fatma Amer, Mehmet Resat Ceylan, Andrea Marino, Gulnur Kul, Tuba Damar-Cakirca, Yara Mohsen Khalaf, Arzu Cennet Isik, Olumuyiwa Elijah Ariyo, Ismail Necati Hakyemez, Rezaul Karim Ripon, Abdorrahim Afkhamzadeh, Emine Kubra Dindar-Demiray, Osasona Oluwadamilola Gideon, Maya Belitova, Mustafa Altindis, Rehab El-Sokkary, Recep Tekin, Mohammed Ahmed Garout, Joanna Zajkowska, Farhan Fazal, Muhammed Bekcibasi, Mirsada Hukic, Summiya Nizamuddin, Serkan Surme, Ricardo Fernandez, Amani El-Kholy, Nasim Akhtar, Saadia Ijaz, Andrea Cortegiani, Meliha Meric-Koc, Hakan Hasman, Agah Victor Maduka, Jehan Ali ElKholy, Sema Sari, Mumtaz Ali Khan, Yasemin Akin, Sukran Kose, Hakan Erdem.</p
-Reduced rings in terms of the Zhou radical
No full textLet be a ring, an idempotent of and denote the
intersection of all essential maximal right ideals of which is called Zhou
radical. In this paper, the Zhou radical of a ring is applied to the
-reduced property of rings. We call the ring {\it Zhou right} (resp.
{\it left}) {\it -reduced} if for any nilpotent in , we have (resp. . Obviously, every ring is Zhou -reduced
and a ring is Zhou right (resp., left) -reduced if and only if
. So we assume that the idempotent is nonzero. We
investigate basic properties of Zhou right -reduced rings. Furthermore, we
supply some sources of examples for Zhou right -reduced rings. In this
direction, we show that right -semicommutative rings (and so right
-reduced rings and -symmetric rings), central semicommutative rings and
weak symmetric rings are Zhou right -reduced. As an application, we deal
with some extensions of Zhou right -reduced rings. Full matrix rings need
not be Zhou right -reduced, but we present some Zhou right -reduced
subrings of full matrix rings over Zhou right -reduced rings
Uniquely strongly clean triangular matrices
No full textWOS: 000363005200004A ring R is uniquely (strongly) clean provided that for any a is an element of R there exists a unique idempotent e is an element of R (e is an element of comm(a)) such that a e is an element of U(R). We prove, in this note, that a ring R is uniquely clean and uniquely bleached if and only if R is abelian, T-n(R) is uniquely strongly clean for all n >= 1, i.e. every n x n triangular matrix over R is uniquely strongly clean, if and only if R is abelian, and T-n(R) is uniquely strongly clean for some n >= 1. In the commutative case, more explicit results are obtained.Natural Science Foundation of Zhejiang ProvinceNatural Science Foundation of Zhejiang Province [LY13A010019]; Scientific and Technological Research Council of TurkeyTurkiye Bilimsel ve Teknolojik Arastirma Kurumu (TUBITAK) [TUBITAK-2221]The authors are grateful to the referee for his/her helpful suggestions, which led to the new version being clearer. This research was supported by the Natural Science Foundation of Zhejiang Province (LY13A010019) and the Scientific and Technological Research Council of Turkey (TUBITAK-2221 Visiting Scientists Fellowship Programme)
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