Browsing by Author "Bayram, Hasan"
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Item Analitik yalınkat fonksiyonların bazı özel alt sınıfları(Uludağ Üniversitesi, 2013) Bayram, Hasan; Öztürk, Metin; Uludağ Üniversitesi/Fen Bilimleri Enstitüsü/Matematik Anabilim Dalı.Bu tez dört bölümden oluşmaktadır. Birinci bölümde; tezin ilerleyen kısımlarında kullanılacak olan bazı temel tanımlar ve teoremler verilmiştir. İkinci bölümde; D açık birim dairesinde normalize edilmiş analitik ve yalınkat fonksiyonların oluşturduğu S sınıfının ve reel kısmı pozitif fonksiyonların oluşturduğu P sınıfının temel özellikleri verildi. Ayrıca S sınıfındaki fonksiyonlar için katsayı bağıntıları, alan teoremleri, büyüme, örtme ve distorsiyon sonuçları verildi. Üçüncü bölümde, yıldızıl ve konveks fonksiyon sınıflarının tanımı yapıldı ve bu sınıflara ait teoremlere yer verildi. Ayrıca bazı yalınkatlık kriterleri incelendi. Tezin esas kısmını oluşturan son bölümde de analitik yalınkat fonksiyonların bazı özel alt sınıfları tanıtıldı. Ayrıca bu sınıflara ait teoremler incelendi.Publication Asthma control and adherence in newly diagnosed young and elderly adult patients with asthma in Turkey(Taylor, 2019-05-04) Gemicioğlu, Bilun; Bayram, Hasan; Cimrin, Arif; Abadoğlu, Öznur; Cilli, Aykut; Uzaslan, Esra; Günen, Hakan; Akyıldız, Levent; Suerdem, Mecit; Özlü, Tevfik; Mısırlıgil, Zeynep; UZASLAN, AYŞE ESRA; Bursa Uludağ Üniversitesi/Tıp Fakültesi/Göğüs Hastalıkları Anabilim Dalı; AAI-1004-2021Objective: This study aimed to evaluate the factors that affect asthma control and adherence to treatment in newly diagnosed elderly asthmatics in Turkey compared with younger patients. Methods: This real-life prospective observational cohort study was conducted at 136 centers. A web-based questionnaire was administered to the patients who were followed up for 12 months. Results: Analysis included 1037 young adult asthma patients (age <65 years) and 79 elderly asthma patients (age >= 65 years). The percentage of patients with total control in the elderly and young groups were 33.9% and 37.1% at visit 1, 20.0% and 42.1% (p = 0.012) at visit 2, and 50.0% and 49.8% at visit 3, respectively. Adherence to treatment was similar for both groups. Visit compliance was better in the elderly group than in the young group at visit 1 (72.2% vs. 60.8%, p = 0.045), visit 2 (51.9% vs. 34.9%, p = 0.002), and visit 3 (32.9% vs. 19.4%, p = 0.004). Adherence to treatment increased with asthma control in both groups (both p < 0.001) but decreased with the presence of gastritis/ulcer, gastroesophageal reflux, and coronary artery disease in the elderly. Conclusions: Asthma control and adherence to treatment were similar for the elderly and young asthma patients, though the follow-up rate was lower in young patients. The presence of gastritis/ulcer, gastroesophageal reflux and coronary artery disease had negative impacts on the adherence to treatment in elderly adult patients.Publication Coefficient estimates for certain subclasses of analytic functions defined by new operator(Amer Inst Physics, 2021-01-01) Cakalli, H; Kocinac, LDR; Ashyralyev, A; Harte, R; Dik, M; Canak, I; Kandemir, HS; Tez, M; Gurtug, O; Savas, E; Akay, KU; Ucgun, FC; Uyaver, S; Ashyralyyev, C; Sezer, SA; Turkoglu, AD; Onvural, OR; Sahin, H; Bayram, Hasan; BAYRAM, HASAN; Yalcin, Sibel; YALÇIN TOKGÖZ, SİBEL; Bursa Uludağ Üniversitesi/Fen Edebiyat Fakültesi/Matematik Bölümü.; Bursa Uludağ Üniversitesi/Fen Edebiyat Fakültesi/Matematik Bölümü.; Cakalli, H; Kocinac, LDR; Ashyralyev, A; Harte, R; Dik, M; Canak, I; Kandemir, HS; Tez, M; Gurtug, O; Savas, E; Akay, KU; Ucgun, FC; Uyaver, S; Ashyralyyev, C; Sezer, SA; Turkoglu, AD; Onvural, OR; Sahin, H; 0000-0001-8106-6834; 0000-0002-0243-8263; B-1379-2014; AAE-9745-2020In this paper, we investigate certain subclasses of analytic functions defined by generalized differential operators involving binomial series. Also, we obtain coefficient estimates involving of the nonhomogeneous Cauchy-Euler differential equation of order r.Publication Convolution and coefficient estimates for (p,q)-convex harmonic functions associated with subordination(Hindawi Ltd, 2022-09-15) BAYRAM, HASAN; Bayram, Hasan; YALÇIN TOKGÖZ, SİBEL; Yalçın, Sibel; Bursa Uludağ Üniversitesi/Fen Edebiyat Fakültesi/Matematik Bölümü.; 0000-0002-0243-8263; AAE-9745-2020; JAC-6018-2023We preface and examine classes of (p, q)-convex harmonic locally univalent functions associated with subordination. We acquired a coefficient characterization of (p, q)-convex harmonic univalent functions. We give necessary and sufficient convolution terms for the functions we will introduce.Item Demographic, clinical and management characteristics of newly diagnosed COPD patients in Turkey: A real-life study(Dove Medical Press Ltd., 2020) Suerdem, Mecit; Günen, Hakan; Akyıldız, Levent; Çilli, Aykut; Özlü, Tevfik; Abadoğlu, Öznur; Bayram, Hasan; Cimrin, Arif Hikmet; Gemicioğlu, Bilun; Mısırlıgil, Zeynep; Uzaslan, Esra; Uludağ Üniversitesi/Tıp Fakültesi/Göğüs Hastalıkları Bölümü; AAI-1004-2021; 8761653500Purpose: In order to determine the clinical and sociodemographic characteristics of newly diagnosed treatment-naïve asthma and COPD patients in Turkey, a multicenter study in 2012 was initiated . We aimed to investigate the characteristics and therapies of COPD patients in the original study in more detail. Patients and Methods: This nation-wide, multicentric, non-interventional, prospective, real-life observational cohort study was conducted in 122 centers. The newly diagnosed patients were not receiving any treatment before the recruitment. Their general characteristics, the combined GOLD 2011 COPD categories and exacerbation histories were noted. The patients were followed up with 3 voluntary visits for 1 year. Their adherence to the inhaled treatment according to GOLD 2011 was evaluated during follow-up visits. Results: The study included 776 COPD patients. Their mean age was 59.4±9.1 years, and 11.9% of the patients were female. 35.1% of the patients were in the GOLD 2011 C and D category. 12.6% are frequent exacerbators, and 52.8% had at least one comorbid condition. 71.8% overtreatment rate was detected. Their attendance rates for three follow-up visits became 55.9%, 32.9% and 18.7%, respectively. The adherence rate to the treatment was measured as 81.9%. Conclusion: Although these patients were diagnosed for the first time, the GOLD C and D categories and frequent exacerbator phenotype were found at a high rate. They were usually prescribed an overtreatment regimen. We think that newly diagnosed COPD patients should be evaluated carefully, and best effort should be made to treat these patients in accordance with the recommendations of the major COPD guidelines.Item Factors affecting control and adherence to one year treatment in elderly asthmatics in Turkey(Elsevier, 2016-02) Gemicioğlu, Bilun; Bayram, Hasan; Cimrin, Arif; Abadoğlu, Öznur; Cilli, Aykut; Günen, Hakan; Akyıldız, Levent; Suerdem, Mecit; Özlü, Tevfik; Mısırlıgil, Zeynep; Uzaslan, Esra; Uludağ Üniversitesi/Tıp Fakültesi.; AAI-1004-2021Item General properties of concave functions defined by the generalized Srivastava-Attiya operator(Eudoxus, 2017-09) Bayram, Hasan; Altınkaya, Şahsene; Uludağ Üniversitesi/Fen Edebiyat Fakültesi/Matematik Bölümü.; 0000-0002-7950-8450; 0000-0001-8106-6834; AAA-8330-2021; 56543332200; 57193539458In this paper we introduce a class (F mu.bC0)-C-m,k (alpha) of concave functions by using the generalized Srivastava-Attiya operator. Also, we get distortion bounds for this class.Item Konkav yalınkat fonksiyonlar(Bursa Uludağ Üniversitesi, 2019-04-01) Bayram, Hasan; Tokgöz, Sibel Yalçın; Bursa Uludağ Üniversitesi/Fen Bilimleri Enstitüsü/Matematik Anabilim Dalı.Bu tez dört bölümden oluşmaktadır. Tezin amacı konkav yalınkat fonksiyonları detaylıca incelemek ve yeni sınıflar keşfetmektir. Birinci bölümde; tezin ilerleyen kısımlarında kullanılacak olan bazı temel tanımlar ve teoremler verildi. İkinci bölümde; D açık birim diskinde normalize edilmiş analitik ve yalınkat fonksiyonların oluşturduğu S sınıfının temel özellikleri verildi. Ayrıca S sınıfındaki fonksiyonlar için katsayı bağıntıları, alan teoremleri, büyüme, örtme ve distorsiyon sonuçları verildi. Tezin esas kısmını oluşturan üçüncü bölümde; konkav yalınkat fonksiyonların ve bazı özel alt sınıflarının tanımı yapıldı ve bu sınıflara ait teoremlere yer verildi. Ayrıca bazı konkav yalınkatlık kriterleri incelendi. Son bölümde de teze ait genel inceleme yapıldı.Item Newly diagnosed asthma in the elderly: Is it really different?(Mosby-Elsevier, 2014-02) Gemicioğlu, Bilun; Abadoğlu, Öznur; Akyıldız, Levent; Bayram, Hasan; Çilli, Aykut; Cimrin, Arif; Günen, Hakan; Mısırlıgil, Zeynep; Özlü, Tevfik; Suerdem, Mecit; Uzaslan, Esra; Uludağ Üniversitesi/Tıp Fakültesi.; AAI-1004-2021Item On a new subclass of harmonic univalent functions(University of Putra Malaysia Pess, 2019-12-04) Bayram, Hasan; Yalçın, Sibel; Bursa Uludağ Üniversitesi/Fen-Edebiyat Fakültesi/Matematik Bölümü.; 0000-0001-8106-6834; 0000-0002-0243-8263; AAE-9745-2020; AAO-3310-2020; 57193539458; 56207790300In the acquaint article, we scrutinize some fundamental attribute of a subclass of harmonic univalent functions defined by a new alteration. Like these, coefficient disparities, distortion bounds, convolutions, convex combinations and extreme points.Publication Q-analogue of a new subclass of harmonic univalent functions associated with subordination(MDPI, 2022-04-01) Bayram, Hasan; BAYRAM, HASAN; Bursa Uludağ Üniversitesi/Fen-Edebiyat Fakültesi/Matematik Bölümü; 0000-0001-8106-6834; JAC-6018-2023In this article, we introduce and investigate the q-analogue of a new subclass of harmonic univalent functions defined by subordination. We first obtain a coefficient characterization of these functions. We give compactness and extreme points, distortion bounds, necessary and sufficient convolution conditions for this subclass of harmonic univalent functions with negative coefficients. The symmetry properties and other properties of the q-analogue subclass of functions presented in this paper shed light on future studies.Publication Some properties of certain multivalent harmonic functions(MDPI, 2023-05-23) Oros, Georgia Irina; Yalçın, Sibel; Bayram, Hasan; YALÇIN TOKGÖZ, SİBEL; BAYRAM, HASAN; Bursa Uludağ Üniversitesi/Fen-Edebiyat Fakültesi/Matematik Bölümü; 0000-0002-0243-8263; 0000-0001-8106-6834; AAE-9745-2020; JAC-6018-2023In this paper, various features of a new class of normalized multivalent harmonic functions in the open unit disk are analyzed, including bounds on coefficients, growth estimations, starlikeness and convexity radii. It is further demonstrated that this class is closed when its members are convoluted. It can also be seen that various previously introduced and investigated classes of multivalent harmonic functions appear as special cases for this class.Item Turkey national mesothelioma surveillance and environmental asbestos exposure control program(MDPI, 2017-10-22) Metintaş, Selma; Batırel, Hasan Fevzi; Bayram, Hasan; Yilmaz, Ülkü; Ak, Güntülü; Metintaş, Muzaffer; Karadağ, Mehmet; Uludağ Üniversitesi/Tıp Fakültesi/Göğüs Hastalıkları Anabilim Dalı.; 0000-0002-9027-1132; AAG-8744-2021; 6601970351Malignant mesothelioma (MM) is an important health problem due to ongoing asbestos exposure. Environmental asbestos exposure leads to a high risk of MM in Turkey. The Turkish Mesothelioma Working Group and the Turkish Public Health Institute designed and performed the Turkey National Mesothelioma Surveillance and Environmental Asbestos Exposure Control Program (TUNMES-EAECP). The aim of this study was to analyze the results of the TUNMES-EAECP. Patients diagnosed with MM (code C45.0-C45.9) between 2008 and 2012 were identified. The "from case to the field" method was used to determine the villages with current or previous asbestos exposure. Special public health teams took soil samples from these villages, which were then examined using an X-ray diffractometer. Direct Standardized Average Annual Mesothelioma Incidence Rate (AMIR) and relative risk (RR) of MM were calculated. Finally, a projection on the incidence of MM between 2013 and 2033 was made. The number of confirmed MM cases was 5617 with a male to female ratio of 1.36. Mean age was 61.7 +/- 13.4 (20-96) years. The median survival was eight (95% CI 7.6-8.4) months. Asbestos exposure continues in 379 villages, with 158,068 people still living in high risk areas. The standardized AMIR was 2.33/100,000 per year. The risk of MM was higher in males, in both sexes over the age of 40, in asbestos-containing provinces, and in those where the TUNMES was organized. Among the population with continuing asbestos exposure in rural areas, the number of MM cases between 2013 and 2033 was estimated as 2511. As such, the incidence of MM in Turkey is as high as in industrialized countries. Asbestos exposure in rural areas continues to be a serious problem in Turkey, which obviates the necessity for effective preventive measures.