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Efficacy of Omentopexy on Complications of Laparoscopic Sleeve Gastrectomy
No full textBackground Laparoscopic sleeve gastrectomy (LSG) is a commonly performed type of bariatric surgery. Early complications of LSG include bleeding, leakage, pulmonary embolism, and surgical site infections. Most surgeons try to implement preventive methods, such as omentopexy. Staple line-imbrication, which has a difficult learning curve, often prevents complications. This study aimed to evaluate the effect of omentopexy on patients with imbricated LSG.Material and Methods The study applied a retrospective data analysis design to patients who underwent LSG between 2020 and 2023. All patients' staple lines were imbricated, and patients were then divided into two groups: omentopexy group and control group. Patients' demographic features, such as age, gender, height, weight, body mass index(BMI), bleeding, leakage, and reoperations, were recorded and examined retrospectively.Results A total of 1356 patients were included in the study (540 in omentopexy, 816 in control), of which the mean age was 37.9 +/- 10.5 years, 82.3% were women, and mean BMI was 40.9 +/- 5.8 kg/m2. The mean bleeding rate was 1.0% (1.3-0.7%), the mean leakage rate was 0.2% (0.2-0.2%, respectively), and the mean reoperation rate was 0.6% (0.7% and 0.5%, respectively). No statistically significant differences were observed.Conclusion Omentopexy is a technique that is widely used to prevent staple line complications. According to our study, omentopexy applied to an imbricated stapler line increased the operation time but did not affect bleeding or leakage ratios. This is the first study to evaluate the effect of omentopexy on imbricated staple lines. The findings of the study indicate that omentopexy has no additional benefit on early complications when using staple-line imbrication.Bahcesehir UniversityNo Statement Availabl
Comparison of the Results of BAL and ETA Culture in Intubated COVID-19 Patients
No full textBackground:The isolation of pathogens using bronchoalveolar lavage (BAL) culture or endotracheal aspirate (ETA) culture may enhance the treatment success for secondary pneumonia due to COVID-19, thereby reducing the risk of morbidity and mortality.Aim:This study aimed to retrospectively analyze the results of BAL and ETA cultures in intubated COVID-19 patients and to determine whether BAL has an advantage over ETA.Methods:We routinely perform BAL culture via bronchoscopy or ETA culture within the first 48 h after intubation. We retrospectively reviewed cases that underwent BAL and ETA. The patients were divided into two groups: Group B (BAL) and Group E (ETA). Various parameters were evaluated and compared between the two groups.Results:The demographic data and blood test results were similar between the two groups. However, ICU stay, duration of intubation, and culture positivity were significantly higher in Group B. Although not statistically significant, the mortality rate was higher in Group E. The most commonly isolated microorganisms were Candida species.Conclusion:The observed mortality rates were consistent with the existing literature. Since the microorganism isolation rate is higher with BAL, leading to more effective antimicrobial treatment, early deaths were prevented, and ICU stay durations were prolonged. Conversely, these durations were shorter in the ETA group due to higher mortality. In intubated COVID-19 patients, a more effective treatment process can be achieved by clearing the airway with fiberoptic bronchoscopy and tailoring the treatment based on BAL culture results. This approach may positively impact prognosis and mortality rates
Vergi ve Harcamaların Milli Gelirdeki Payının Büyümeye Etkisi, Çok Ülkeli Bir Anali
No full textEkonomik büyüme, makroekonomik politikaların temel amaçlarından biridir. Devlet harcamaları ve vergi gelirleri ise maliye politikasının iki önemli bileşenidir. Çalışmada verileri eksiksiz mevcut olan 103 ülkede 2005-2019 yılları arası panel veri kullanılmıştır. Durağanlık, homojenlik ve yatay kesit bağımlılığı için testler yapıldıktan sonra verilere uygun Panel Granger Nedensellik testleri ve panel veri analizleri uygulanmıştır. Devlet harcamaları ve vergi gelirleri değişkenlerinin aldıkları değerler değil, milli gelir içindeki payları kullanılmıştır. Çalışmada devlet harcamalarının ve vergi gelirlerinin birbirlerinin Granger nedeni olduğu bulunmuştur. Büyüme ise hem vergi gelirleri hem de devlet harcamalarına Granger nedendir. Devlet harcamaları da kısa vadede büyümeye Granger neden iken vergi gelirlerinin büyüme üzerinde bir etkisine ise rastlanmamıştır. Panel regresyon sonucunda, devlet harcamalarının büyüme üzerindeki etkisinin katsayısı negatif, vergilerin ise pozitif olduğu görülmüştür. Katsayılar istatistiksel olarak anlamlı bulunmuştur. Bunların sonucu olarak devlet harcamalarının milli gelir içindeki payının azaltılmasının büyümeye pozitif etkisinin olduğu ve bu durumun aynı zamanda vergi gelirlerinin milli gelir içindeki paylarını da arttırdığı için bütçe dengesi üzerinde de pozitif etkide bulunacağı söylenebilir
HOW DOES THE IMPACT OF FINANCIAL PERFORMANCE ON BANK CREDIT ACCESS OF SMEs DIFFER DEPENDING ON EXECUTIVE-LEVEL CHARACTERISTICS?
No full textThe financial performance of SMEs (small and medium-sized enterprises) plays a crucial role in bank credit access of these enterprises and the economies of countries where they operate. However, firm’ executives’ Resource-based View (RBV) characteristics can differently affect the financial performance of SMEs that they manage, therefore, credit access of SMEs can differ. In this regard, this paper aims to analyze whether the impact of financial performance on bank access to finance differs depending on executives’ educational status, gender, and sectoral experience or not. In line with this aim, this research collects data from 479 randomly selected respondents by directing an online questionnaire. After that, the research data is analyzed by employing a Binary Logistic Regression Test. According to the results, the impact of financial performance on credit access differs depending on the gender and sectoral experience of firms’ executives. However, the educational status of firm executives does not play any role in the impact of financial performance on access to finance
Evaluation of ischemia/reperfusion injury in streptozotocin-induced diabetic rats and its amelioration by hazelnut
No full textBeneficial effects of hazelnuts on human health are well known, and recent research on heart health has generated more interest. However, studies based on its oxidative damage preventive effect are not well explained in patients with diabetes mellitus (DM). Therefore, the aim of this study was to investigate the protective effect of hazelnut against oxidative stress-induced damage in hepatic ischemia/reperfusion (I/R) injury in rats induced by streptozotocin (STZ). Rats were divided into four groups (Control, DM, DM+I/R, DH; n=6 in each). The I/R model was created four weeks after DM was induced in rats. In four weeks until the I/R model was created, the DM+I/R+Hazelnut group was fed with pellet feed (2 g/100 g/day) prepared with hazelnut. At the end of experiment, glutathione (GSH) and malondialdehyde (MDA) levels in liver tissue, tumor necrosis factor-alpha (TNF-alpha), and interleukin 6 (IL-6) levels were measured in serum. The results showed that TNF-alpha, IL-6, and MDA levels increased significantly in the DM+I/R group, while this increase was less in the DM+I/R+Hazelnut group. It is concluded that hepatic I/R damage caused increased inflammatory response and oxidative stress in diabetic rats, and this response was decreased/modulated by the pre-treatment with hazelnuts
THE MEDIATING ROLE OF CULTURAL INTELLIGENCE IN THE RELATIONSHIP BETWEEN PERSONALITY AND CROSS CULTURAL ADAPTABILITY: A RESEARCH ON GRADUATE STUDENTS
No full textIndividuals' desire to live in different nations to improve their living standards grows as globalization accelerates and countries' environmental conditions change. Even though people have a strong desire to do so, it is extremely difficult to adapt to a new culture. There are numerous factors that influence people's cross-cultural adaptability. The concept of cultural intelligence, which plays an important role in helping individuals understand individuals from different cultures and behave appropriately in that culture, is the most important of these factors. Cultural intelligence analysis can help individuals overcome or avoid these challenges. Individuals' personalities, in addition to cultural intelligence, are considered as another factor that has a significant impact on the results. The analysis of personality structures can reveal whether or not they can adapt to different cultures. The purpose of this study is to investigate the concepts of cross-cultural adaptability, cultural intelligence, and personality in the context of Business Administration graduate students' intentions to live abroad and to determine the extent to which these three concepts are related
Investigation of ? (1405)as a molecular pentaquark state
No full textLambda ( 1405 ) is one of the interesting particles with its unclear structure and distinct properties. It has a light mass compared to its non-strange counterpart, despite the strange quark it carries. This situation puts the investigation of this resonance among the hot topics in hadron physics and collects attention to clarify its properties. In this study, we focus on the calculation of the mass and residue of the Lambda ( 1405 ) resonance within the framework of QCD sum rules. We assign a structure in the form of a molecular pentaquark composed from admixture of K - meson-neutron. Using an interpolating current in this form, the masses and the current coupling constant are attained as m = 1406 +/- 128 MeV and lambda = ( 3.35 +/- 0.35 ) x 10( - 5) GeV 6 for q and m = 1402 +/- 141 MeV and lambda = ( 4.08 +/- 1.08 ) x 10( - 5) GeV 6 for I Lorentz structures entering the calculations, respectively. The obtained mass values agree well with the experimental data supporting the plausibility of the considered structure.Iran National Science Foundation [4025036]; Iran National Science Foundation (INSF)K. Azizi is thankful to Iran National Science Foundation (INSF) for the financial support provided under the elites grant number 4025036
BIST BİLİŞİM ENDEKSİNE KAYITLI FİRMALARDA KUR RİSKİ VE FİNANSAL PERFORMANS İLİŞKİSİ
No full textÇalışma, kur riskinin firmaların finansal performansı, hisse senedi getirileri ve karlılıkları üzerindeki etkisini ampirik olarak incelemeyi amaçlamaktadır. Çalışmada, 2014-2022 yıllarına ait çeyrek dönemlik veriler kullanılarak, BIST Bilişim Endeksi’nde yer alan 23 firma için kur riskinin firma performansına etkisi panel veri yöntemi kullanılarak araştırılmıştır. Kur riski; net yabancı para pozisyonu / özkaynaklar ve net yabancı para pozisyonu/toplam kaynaklar ile firma performansı aktif karlılık, Tobin’s Q oranları ve hisse senedi getirisi ile ifade edilmiştir. Analiz 3 farklı model kurularak gerçekleştirilmiştir. Çalışmada ulaşılan ampirik bulgulara göre kur riskinin firma kârlılığını olumsuz, hisse senedi getirilerini olumlu etkilediği sonucuna ulaşılırken firma performansı üzerindeki etkisinin anlamsız olduğu görülmüştür. Aynı zamanda firma hacmi firma kârlılığını ve performansını olumlu etkilerken, hisse senedi getirileri üzerindeki etkisinin ise anlamsız olduğu görülmüş. Kaldıraç değişkeninin firma kârlılığını ve performansını olumsuz etkilediği, hisse senedi getirileri üzerindeki etkisinin de anlamsız olduğu görülmüştür. Büyüme değişkeninin firma kârlılığını olumlu etkilediği, firma performansı ve hisse senedi getirileri üzerindeki etkisinin anlamsız olduğu görülmüştür
Dynamic fitness-distance balance-based artificial rabbits optimization algorithm to solve optimal power flow problem
No full textArtificial rabbits optimization (ARO) is a swarm intelligence-based algorithm inspired by the survival strategies of rabbits. Although ARO has a good convergence rate, it is prone to get stuck in the local optima and converge prematurely. To overcome this, the present paper redesigns the exploration operator of the ARO algorithm with the roulette fitness-distance balance (RFDB) and dynamic fitness-distance balance (dFDB) strategies. In this context, three different versions of the fitness-distance balance-based artificial rabbits optimization (FDBARO) algorithm are developed. The performance of the original ARO and FDBARO versions (FDBARO-1, FDBARO-2, and FDBARO-3) are evaluated on CEC 2017 and CEC 2020 benchmark functions. The obtained results are analyzed with the Wilcoxon and Friedman statistical tests. Statistical and convergence analysis results showed that the FDBARO-3 algorithm designed with the dFDB selection method can explore the search space more successfully compared to other algorithms. This version was named the dynamic FDBARO (dFDBARO) algorithm. Moreover, the practicability of the proposed dFDBARO is highlighted by the solution of the optimal power flow (OPF) problem formulated with renewable energy sources (RESs) and flexible alternating current transmission system (FACTS) devices considering fixed and uncertain load demands. Experimental results showed that the proposed dFDBARO is a competitive algorithm for solving global optimization and constrained OPF problems. The source code of the dFDBARO algorithm is available at https://www.mathworks.com/matlabcentral/filee xchange/154845-dfdbaro-an-enhanced-metaheuristic-algorithm
ZİNCİR YİYECEK İÇECEK İŞLETMELERİNDE DİJİTAL DÖNÜŞÜM: İSTANBUL ÖRNEĞİ
No full textBilgi çağı olarak adlandırılan 21. yüzyıl, küreselleşmenin ve dijitalleşme kavramlarının hızlı bir biçimde yaşandığı, Dünya genelinde Endüstri 4.0 kavramının öne çıktığı bir dönemin başlangıcı olmuştur. Günümüz koşullarında, gastronomi alanında da gıda ürünlerinin üretim, dağıtım ve servis edilme aşamalarında gelişen teknolojinin olanaklarından faydalanılmaktadır. Çalışmanın amacı, zincir yiyecek içecek işletmelerindeki dijital dönüşüm, kullanılan teknolojik cihazlar ile bu işletmelerdeki operasyonel algı ve tutumun incelenmesidir. Çalışmada, nitel araştırma yöntemi kullanılmıştır. Amaçlı örneklem yönteminin kullanıldığı çalışmada, evreni en iyi temsil edeceği düşünülen ulusal merkezli markanın yöneticilerinden oluşan 15 katılımcıyla yüz yüze görüşmeler gerçekleştirilmiştir. Görüşmelerden elde edilen veriler Maxqda Pro2020 analiz programıyla çözümlenerek analiz edilmiştir. Alan yazın incelendiğinde, ulusal ve uluslararası kapsamda zincir yiyecek içecek işletmelerinin dijital dönüşüm uygulamalarını detaylı bir şekilde ele alan başka bir çalışmanın olmadığı görülmektedir. Bu nedenle çalışmanın, ulusal ve uluslararası alanda önem arz ettiği düşünülmektedir. Analizler, katılımcıların ifadelerine dayanarak iki ana tema tespit edildiğini göstermektedir. Marka dijital dönüşüm uygulamaları ve dijital dönüşüm uygulamalarının avantajları ana temaları ifade ederken bu ana temalar, uygun alt başlıklar ile detaylandırılarak açıklanmıştır. Elde edilen bulgulara göre, dijital dönüşüm uygulamaları teknolojiyi takip edebilmek, maliyet kontrollerini yapabilmek ve sürdürülebilirlik uygulamalar içerisinde bütünleşmiş operasyonel uygulamaları kullanılarak misafir beklentilerinin karşılanmasında önemli bir rol oynamaktadır