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A predictive equation for residual strength using a hybrid of subset selection of maximum dissimilarity method with Pareto optimal multi-gene genetic programming

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Geoscience Frontiers 2021年第5期12卷 342-354页

作者： Hossien Riahi-Madvar Mahsa Gholami Bahram Gharabaghi seyed morteza seyedian Department of Water Engineering Faculty of AgricultureVali-e-Asr University of RafsanjanRafsanjanIran Department of Civil Engineering Faculty of EngineeringBu-Ali Sina UniversityHamedanIran School of Engineering University of GuelphGuelphOntario N1G 2W1Canada Department of Water Engineering Faculty of AgricultureGhonbad Kavous UniversityGhonbad KavousIran

More accurate and reliable estimation of residual strength friction angle(/r)of clay is crucial in many geotechnical engineering applications,including riverbank stability analysis,design,and assessment of earthen dam slope ***,a general predictive equation for/r,with applicability in a wide range of effective parameters,remains an important research *** goal of this study is to develop a more accurate equation for/r using the Pareto Optimal Multi-gene Genetic Programming(POMGGP)approach by evaluating a comprehensive dataset of 290 experiments compiled from published literature databases worldwide.A new framework for integrated equation derivation proposed that hybridizes the Subset Selection of Maximum Dissimilarity Method(SSMD)with Multi-gene Genetic Programming(MGP)and Pareto-optimality(PO)to find an accurate equation for/r with wide range *** final predictive equation resulted from POMGGP modeling was assessed in comparison with some previously published machine learning-based equations using statistical error analysis criteria,Taylor diagram,revised discrepancy ratio(RDR),and scatter *** on the results,the POMGGP has the lowest uncertainty with U95=2.25,when compared with Artificial Neural Network(ANN)(U95=2.3),Bayesian Regularization Neural Network(BRNN)(U95=2.94),Levenberg-Marquardt Neural Network(LMNN)(U95=3.3),and Differential Evolution Neural Network(DENN)(U95=2.37).The more reliable results in estimation of/r derived by POMGGP with reliability 59.3%,and resiliency 60%in comparison with ANN(reliability=30.23%,resiliency=28.33%),BRNN(reliability=10.47%,resiliency=10.39%),LMNN(reliability=19.77%,resiliency=20.29%)and DENN(reliability=27.91%,resiliency=24.19%).Besides the simplicity and ease of application of the new POMGGP equation to a broad range of conditions,using the uncertainty,reliability,and resilience analysis confirmed that the derived equation for/r significantly outperformed other existing machine learning

关键词： Earth slopes Friction angle Maximum dissimilarity Multi-gene genetic programming Pareto-optimality Residual strength

Accuracy of Cardiogoniometry in Diagnosis of Coronary Artery Disease in Patients with Angina Pectoris

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World Journal of Cardiovascular Diseases 2016年第11期6卷 383-390页

作者： seyed Masoud seyedian Farzaneh Ahmadi Samira Maalhagh Fard Abdolrahim Nejat Bakhsh Cardiovascular Disease Research Center Ahvaz Jundishapur University of Medical Sciences Ahvaz Iran

Background: Cardiogoniometry (CGM) is a novel non-invasive technique for quantitative three-dimensional vectorial analysis of myocardial depolarization and repolarization. We aimed to determine the diagnostic value of cardiogoniometry for the identification of coronary artery disease (CAD) in patients with history of chest pain. Materials and Methods: Cardiogoniometry was performed in 190 patients with history of chest pain prior to diagnostic coronary angiography. Then cardiogoniometry parameters correlated with angiography findings to determine accuracy of cardiogoniometry for diagnose of CAD. Result: Cardiogoniometry showed a sensitivity of 72% and a specificity of 60%, which was less sensitive than perfusion scan but more sensitive than the ECG and comparable with exercise ECG. The specificity was less than these three methods. Conclusions: Cardiogoniometry is a new, noninvasive method which is helpful in identifying patients with coronary artery disease and can be performed at rest and free of risk such as radiation exposure, and also is suitable for patients who are not able to exercise.

关键词： Angina Ischemia Coronary Artery Disease Cardiogoniometry Non-Invasive Techniques

The effect of aerobic training on endothelium-dependent vasodilatation in patients with coronary artery disease who were revascularized and young men

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Health 2013年第10期5卷 1706-1711页

作者： seyed Masoud seyedian Farzaneh Ahmadi Babak Hamidian Ebrahim Hajizadeh Afshin Rezazadeh Ahmad Reza Asare Mohammad Hasan Adel Mohammad Nourizadeh Atherosclerosis Research Center Joundishapour University Ahvaz Iran Cardiovascular Disease Research Center Joundishapour University Ahvaz Iran Cardiovascular Disease Research Center Jundishapur University Ahvaz Iran Department of Cardiology Medical Jundishapur University of Ahvaz Atherosclerosis Research Center Jondishapour University of Medical Sciences Ahvaz Iran

Aim: The aim of this study was to determine the effect of training on endothelium-dependent vasodilatation in patients with coronary artery disease (CAD) after revascularization and healthy young men. Background: Impaired endothelial function has been observed in patients with CAD and those with CAD risk factors. Studies have shown that exercise can enhance endothelial function. Methods: This experimental cross-sectional study was conducted on patients with CAD (3 months after CABG and PCI) and students of medical school in 2011. Endothelium dependent dilation of the brachial artery was determined by using high-resolution vascular ultrasonography through flow-mediated vasodilatation (FMD) after induction of ischemia, and the data were analyzed using SPSS, dependent t-test and ANCOVA. Findings: The findings showed that at baseline, FMD was reduced in revascularized patients, when compared with healthy young men, after 8 weeks, and exercise training significantly improved FMD in patients underwent training group [from 4.31 ± 1.45 (SD)% to 6.15 ± 0.773 (SD)%, p p ed unchanged, and even after aerobic training, it did not significantly modify the brachial artery diameter in these groups. Conclusion: Our study demonstrates that endothelial dysfunction persisting in CAD patients after revascularization and aerobic training can improve endothelial function in different vascular beds in CAD patients and healthy young men. This may contribute to the benefit of regular exercise in preventing and restricting cardiovascular disease.

关键词： Endothelium-Dependent Vasodilatation Coronary Artery Disease Aerobic Training High-Resolution Ultrasound Flow-Mediated Dilation

Study the effect of exercise on systolic pulmonary artery pressure in healthy subjects

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Health 2012年第4期4卷 233-236页

作者： Masoud seyedian Farzane Ahmadi Atefeh Lalvand Mohammad Nourizadeh Cardivascular disease research center Ahvaz joundishapour university Ahvaz Iran

Introduction: As no data is available concerning the cut-off value defining abnormal pulmonary artery systolic pressure (PASP) response in subjects of various ages, the aim of this study is to assess physiological PASP response to exercise in healthy individuals of various ages. Material and methods: One hundred and twenty three healthy volunteers, aged 30 to 70 years, underwent Doppler echocardiographic measurements at rest and after treadmill exercise test. Pulmonary artery systolic pressure was estimated at rest, and immediately after peak exercise using Bernoulli formula (four times tricuspid valve regurgitation velocity squared adding an estimated right atrial pressure). Results: Lower and upper limits of PASP during rest was 7 and 28 mmHg and after peak exercise was 14 and 48 mmHg respectively. After exercise, PASP increased from rest (14 ± 4 mmHg) to peak (25 ± 7 mmHg). Pulmonary artery systolic pressure during rest and peak exercise, increased with age, but has no correlation with body mass index or gender. Conclusion: Pulmonary artery systolic pressure at peak exercise can frequently reach values ≥ 30 mmHg in healthy individuals with good exercise capacity, especially in elderly individuals, which goes beyond pathologic definitions of pulmonary hypertension.

关键词： Pulmonary Arterial Hypertension Pulmonary Arterial Systolic Pressure Exercise Doppler Echocardiography

Is Any Correlation between Platelet Indices with Extent of Coronary Artery Involvement in Ischemic Heart Diseases?

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Health 2016年第12期8卷 1266-1274页

作者： Mohammad Hassan Adel Masood seyedian Marjan Jafarsalehi Mohammad Hossein Najafi Mohammad Nourizadeh Mehdi Mohebi Sara Nourizadeh Atherosclerosis Research Center Jundishapur University of Medical Sciences Ahvaz Iran Department of Medical Genetics Faculty of Medicine Tehran University of Medical Sciences Tehran Iran Department of Biochemistry Kharazmi University Tehran Iran

Ischemic heart disease (IHD) is the most common cause of death around the world. Nowadays Platelet counts (PC) and volumetric platelet indices are available routinely in most laboratories and reflect the level of mobility and production of platelets. It seems that the excessive flexibility and size of the platelets and their local activation have correlation with extent of ischemic heart disease. So our objective is the study of platelet indices in ischemic heart disease. This non-randomized prospective study was performed on 245 patients with ischemic heart disease, who underwent the coronary angiography. The patients were divided into four groups: stable angina, unstable angina, acute myocardial infarction and control group;and then platelet indices, including the platelet counts (PC), the average platelet volume (MPV), the Platelet Distribution Width (PDW) and plateletcrit (PCT) in each group with the extent of coronary disease were compared based on an Syntax Score system and observational methods. The average ages of the patients were 57 years and 65% of them were male and the rest were female. A significant difference is exists between indices in all three groups compared to the control that this difference was related to gender and the type of the coronary artery involvement. However, only in infarction group, PDW in different disease intensities was significantly different. In this study, unlike many of the previous studies no relationship was found between the MPV with the extent of coronary disease.

关键词： Ischemic Heart Disease Platelet Indices Average Platelet Size Platelet Distribution