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Role of the Seasonal Cycle in Atrial Fibrillation Seen after Coronary Artery Bypass Surgery

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World Journal of Cardiovascular Surgery 2020年第6期10卷 91-99页

作者： Ersin Çelik Ahmet Rıfkı Çora kadir burhan karadem Dinçer Uysal Isparta City Hospital Department of Cardiovascular Surgery Isparta Turkey Suleyman Demirel University Department of Cardiovascular Surgery Isparta Turkey

Background: We aimed to investigate the effect of seasons on atrial fibrillation that occurred after coronary bypass surgery operation. Method: 187 patients underwent coronary artery bypass operation in our clinic between July 2018 - July 2019. Isolated coronary artery bypass graft operation was performed with cardiopulmonary bypass to179 of these patients. Forty three patients that developed atrial fibrillation after coronary bypass operation, demographic, laboratory findings and date of atrial fibrillation data investigated retrospectively. Results: Forty three patients developed atrial fibrillation after coronary artery bypass surgery. Forty one patients operated in winter, 48 in spring, 47 in summer, 43 in autumn and 13 patients developed atrial fibrillation in winter, 11 (25.6%) in spring, 8 (20.9%) in summer and 11 (23.3%) in autumn respectively. There is no statistical significance found by Z test that performed for all seasons for atrial fibrillation. Conclusion: There are many reasons that could play role on developing atrial fibrillation after coronary artery bypass surgery. There are many publications that report vitamin D deficiency as a reason for developing atrial fibrillation after coronary bypass surgery. In our study, we did not evaluate a relationship between the development of post operative atrial fibrillation and seasons.

关键词： Atrial Fibrillation Coronary Artery Bypass Grafting Vitamin D Season

Relational Turkish Text Classification Using Distant Supervised Entities and Relations

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Computers, Materials & Continua 2024年第5期79卷 2209-2228页

作者： Halil Ibrahim Okur kadir Tohma Ahmet Sertbas Department of Computer Engineering Faculty of Engineering and Natural SciencesIskenderun Technical UniversityHatay31200Turkey Department of Computer Engineering Faculty of EngineeringIstanbul University-CerrahpasaIstanbul34310Turkey

Text classification,by automatically categorizing texts,is one of the foundational elements of natural language processing *** study investigates how text classification performance can be improved through the integration of entity-relation information obtained from the Wikidata(Wikipedia database)database and BERTbased pre-trained Named Entity Recognition(NER)*** on a significant challenge in the field of natural language processing(NLP),the research evaluates the potential of using entity and relational information to extract deeper meaning from *** adopted methodology encompasses a comprehensive approach that includes text preprocessing,entity detection,and the integration of relational *** conducted on text datasets in both Turkish and English assess the performance of various classification algorithms,such as Support Vector Machine,Logistic Regression,Deep Neural Network,and Convolutional Neural *** results indicate that the integration of entity-relation information can significantly enhance algorithmperformance in text classification tasks and offer new perspectives for information extraction and semantic analysis in NLP *** of this work include the utilization of distant supervised entity-relation information in Turkish text classification,the development of a Turkish relational text classification approach,and the creation of a relational *** demonstrating potential performance improvements through the integration of distant supervised entity-relation information into Turkish text classification,this research aims to support the effectiveness of text-based artificial intelligence(AI)***,it makes significant contributions to the development ofmultilingual text classification systems by adding deeper meaning to text content,thereby providing a valuable addition to current NLP studies and setting an important reference point for future research.

关键词： Text classification relation extraction NER distant supervision deep learning machine learning

Dynamic Pricing Strategies Using Artificial Intelligence Algorithm

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Open Journal of Applied Sciences 2024年第8期14卷 1963-1978页

作者： Murat Basal Emel Saraç kadir Özer Logistics Vocational School Istanbul Gelisim University Istanbul Turkey Department of Business Administration Institute of Social Sciences Ostim Technical University Ostim Turkey Department of Insurance Faculty of Financial Sciences Ankara Hac Bayram Veli University Ankara Turkey

Pricing strategies can have a huge impact on a company’s success. This paper focuses on the advantages and disadvantages of using artificial intelligence in dynamic pricing strategies. A good understanding of the possible benefits and challenges will help companies to understand the impact of their chosen pricing strategies. AI-driven Dynamic pricing has great opportunities to increase a firm’s profits. Firms can benefit from personalized pricing based on personal behavior and characteristics, as well as cost reduction by increasing efficiency and reducing the need to use manual work and automation. However, AI-driven dynamic rewarding can have a negative impact on customers’ perception of trust, fairness and transparency. Since price discrimination is used, ethical issues such as privacy and equity may arise. Understanding the businesses and customers that determine pricing strategy is so important that one cannot exist without the other. It will provide a comprehensive overview of the main advantages and disadvantages of AI-assisted dynamic pricing strategy. The main objective of this research is to uncover the most notable advantages and disadvantages of implementing AI-enabled dynamic pricing strategies. Future research can extend the understanding of algorithmic pricing through case studies. In this way, new, practical implications can be developed in the future. It is important to investigate how issues related to customers’ trust and feelings of unfairness can be mitigated, for example by price framing.

关键词： Artificial Intelligence Algorithm Dynamic Pricing Strategy

Single incision laparoscopic surgery for hepatocellular carcinoma

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World Journal of Gastrointestinal Surgery 2024年第10期16卷 3078-3083页

作者： Ilhan Karabicak kadir Yildirim Mahmut Fikret Gursel Zafer Malazgirt Department of General Surgery Samsun VM Medicalpark HospitalSamsun 55200Türkiye

Single incision laparoscopic liver resection(SILLR)is the most recent develop-ment in the laparoscopic approach to the *** for hepatocellular carci-noma(HCC)has developed much more slowly than multiport *** far,195 patients completed SILLR for *** this paper,we reviewed all published papers about SILLR for HCC and discussed the feasibility of the SILLR,peri and postoperative findings,tricks of patient selection and whether SILLR compromise the oncological principles.

关键词： Single incision Laparoscopic liver surgery Liver resection Hepatocellular carcinoma Multiport laparoscopic liver resection

Design of a Novel Robotic Fish Structure Utilizing PVC Gel Actuators

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Modern Mechanical Engineering 2024年第3期14卷 57-72页

作者： Ruyhan Nazia Bibi Sara Rahman Abdullah Al Hossain Newaz Abdul kadir Nasir Uddin School of Mechanical Engineering Xian Jiaotong University Xian China School of Mechanical Engineering University of Bridgeport Bridgeport USA

In this research work, it has been designed a bionic robot fish structure, can swim underwater. The active compact body is powered by eight sets of symmetric PVC gel actuators with a caudal fin. The robot’s 200 mm-long, fish structure design incorporates a 55.52 angle to optimize the fish dynamics movement. It’s a fast and smooth operation and can swim. The robot can swim fast and quietly by using the right positions and the appropriate actuators on PVC gel actuators. This design entails a unique architecture that enables the robot to move safely and unobtrusively at the same time, which makes it suitable equipment for different exploration and surveillance missions in the water with speed and silent operation as the foremost concern.

关键词： Biomimetic Robotics Structural Design PVC Gel Actuators Swimming Mechanisms

Antioxidative effect of melatonin, ascorbic acid and N-acetylcysteine on caerulein-induced pancreatitis and associated liver injury in rats

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World Journal of Gastroenterology 2006年第2期12卷 259-264页

作者： Mukaddes E■refoglu Mehmet Gül burhan Ate■ kadir Batoglu Mukadder Ay■e Selimoglu Department of Histology and Embryology Faculty of MedicineInonu University44280MalatyaTurkey Department of Chemistry Faculty of Science and ArtInonu University44280MalatyaTurkey Department of Biochemistry Faculty of PharmacyInonu University44280MalatyaTurkey Department of Pediatric Gastroenterology Hepatology and NitrutionFaculty of MedicineAtaturk UniversityErzurumTurkey

AIM： To investigate the role of oxidative injury in pancreatitis-induced hepatic damage and the effect of antioxidant agents such as melatonin, ascorbic acid and N-acetyl cysteine on caerulein-induced pancreatitis and associated liver injury in rats. METHODS： Thirty-eight female Wistar rats were used. Acute pancreatitis （AP） was induced by two i.p. injections of caerulein at 2-h intervals （at a total dose of 100 μg/kg ***）. The other two groups received additional melatonin （20 mg/kg ***） or an antioxidant mixture containing L（＋）-ascorbic acid （14.3 mg/***.） and N-acetyl cysteine （181 mg/kg ***.） i.p. shortly before each injection of caerulein. The rats were sacrificed by decapitation 12 h after the last injection of caerulein. Pancreatic and hepatic oxidative stress markers were evaluated by changes in the amount of lipid peroxides measured as malondialdehyde （MDA） and changes in tissue antioxidant enzyme levels, catalase （CAT） and glutathione peroxidase （GPx）. Histopathological examination was performed using scoring systems. RESULTS： The degree of hepatic cell degeneration, intracellular vacuolization, vascular congestion, sinusoidal dilatation and inflammatory infiltration showed a significant difference between caerulein and caerulein＋melatonin （P= 0.001）, and careulein and caerulein ＋ L（＋）- ascorbic acid ＋N-acetyl cysteine groups （P= 0.002）. The degree of aciner cell degeneration, pancreatic edema, intracellular vacuolization and inflammatory infiltration showed a significant difference between caerulein and caerulein ＋ melatonin （P=0.004）, and careulein and caerulein ＋ L（＋）-ascorbic acid ＋N-acetyl cysteine groups （P=0.002）. Caerulein-induced pancreatic and liver damage was accompanied with a significant increase in tissue MDA levels （P= 0.01, P= 0.003, respectively） whereas a significant decrease in CAT （P= 0.002, P=0.003, respectively） and GPx activities （P= 0.002, P= 0.03, respectively）. Melatonin and L（＋）-ascorbic acid ＋N-acetyl cysteine administratio

关键词： Caerulein Liver Melatonin Oxidative stress Pancreatitis

P-adic空间上测度的Hausdorff维数和局部维数

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安徽大学学报（自然科学版） 2024年第5期48卷 8-11页

作者：买买提艾力·喀迪尔喀什大学数学与统计学院现代数学及其应用研究中心新疆喀什844000

研究了d-维P-adic向量空间Q_(p)^(d)上的Borel集Ω的Hausdorff维数与支撑在Ω上的概率测度μ的局部维数之间的关系.研究结果将欧氏空间Q^(d)上的质量分布原理推广到非阿基米德空间Q_(p)^(d)上去.

关键词： P-adic空间 Hausdorff维数局部维数质量分布原理

Impact of lepton pT threshold on charge asymmetry predictions for inclusive Wboson production in pp collisions at 13 TeV

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Chinese Physics C 2021年第8期45卷 36-44页

作者： kadir Ocalan Necmettin Erbakan University Faculty of Aviation and Space SciencesKonyaTurkey

This paper presents the impact of the lepton transverse momentum p^(l)_(T) threshold on the W boson charge asymmetry predictions in perturbative QCD for the inclusive W^(±)+X→l^(±)v+X production in proton-proton(pp)*** predictions are obtained at various low-p^(l)_(T) thresholds p^(l)_(T)>20,25,30,and 40 GeV in a fiducial region encompassing both the central and forward detector acceptances in terms of the lepton pseudorapidity 0≤ηl≤<*** predicted distributions for the lepton charge asymmetry,which is defined by ηl(Aηl),at the next-to-next-to-leading order(NNLO)accuracy are compared with the CMS and LHCb data at 8 TeV center-of-mass collision *** 8 TeV predictions reproduce the data fairly well within the quoted *** predictions from the CT14 parton distribution function(PDF)model are in a slightly better agreement with the data over the other PDF sets that are *** 13 TeV predictions using various p^(l)_(T) thresholds are reported for An,and the charge asymmetries that are defined in terms of the differential cross sections in bins of the W boson rapidity yw(A_(yw))and transverse momentum(Apw).The NNLO predictions for the Ayw,and Apw distributions are assessed to be in close correlation with the plT *** An,and A_(yw) distributions are particularly shown to be more correlated at a higher ^(l)_(T) *** Apw distributions are also reported from the merged predictions with improved accuracy by the inclusion of the next-to-next-to-next-to-leading logarithm(N^(3)LL)corrections,i.e.,at NNLO+N^(3)*** predicted distributions from various ^(l)_(T) thresholds represent a finer probe in terms of the capability to provide more constraints on the ratio of u and d quark distribution functions in the parton momentum fraction range 10^(-4)

关键词： high energy physics phenomenology perturbative QCD calculations W bosons W boson charge asymmetries lepton transverse momentum threshold

Investigation of the parameters affecting the behavior of RC beams strengthened with FRP

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Frontiers of Structural and Civil Engineering 2022年第6期16卷 729-743页

作者： kadir SENGUN Guray ARSLAN Department of Civil Engineering Yildiz Technical UniversityIstanbul 34220Turkey

Three-point bending tests were carried out on nineteen Reinforced Concrete(RC)beams strengthened with FRP in the form of completely *** strip width to spacing ratios,FRP type,shear span to effective depth ratios,the number of FRP layers in shear,and the effect of stirrups spacing were the parameters investigated in the experimental *** FRP contribution to strength on beams having the same strip width to spacing ratios could be affected by the shear span to effective depth ratios and stirrups *** FRP contributions to strength were less on beams with stirrups in comparison to the tested beams without *** RC beams using FRP could change the failure modes of the beams compared to the reference *** addition to the experimental study,a number of equations used to predict the FRP contribution to the shear strength of the strengthened RC beams were assessed by using a limited number of beams available in the *** effective FRP strain is predicted by using test results,and this prediction is used to calculate the FRP contribution to shear strength in ACI 440.2R(2017)*** on the statistical values of the data,the proposed equation has the lowest coefficient of variation(COV)value than the other equations.

关键词： carbon glass strengthening shear strength reinforced concrete beam fiber reinforced polymer