Three dimensional dynamic soil interaction analysis in time domain through the soft computing

Bin Han,J.B. Sun,Milad Heidarzadeh,M.M. Nemati Jam,O. Benjeddou 국제구조공학회 2021 Steel and Composite Structures, An International J Vol.41 No.5

This study presents a 3D non-linear finite element (FE) assessment of dynamic soil-structure interaction (SSI). The numerical investigation has been performed on the time domain through a Finite Element (FE) system, while considering the nonlinear behavior of soil and the multi-directional nature of genuine seismic events. Later, the FE outcomes are analyzed to the recorded in-situ free-field and structural movements, emphasizing the numerical model's great result in duplicating the observed response. In this work, the soil response is simulated using an isotropic hardening elastic-plastic hysteretic model utilizing HSsmall. It is feasible to define the non-linear cycle response from small to large strain amplitudes through this model as well as for the shift in beginning stiffness with depth that happens during cyclic loading. One of the most difficult and unexpected tasks in resolving soil-structure interaction concerns is picking an appropriate ground motion predicted across an earthquake or assessing the geometrical abnormalities in the soil waves. Furthermore, an artificial neural network (ANN) has been utilized to properly forecast the non-linear behavior of soil and its multi-directional character, which demonstrated the accuracy of the ANN based on the RMSE and R2 values. The total result of this research demonstrates that complicated dynamic soil-structure interaction processes may be addressed directly by passing the significant simplifications of well-established substructure techniques.

Turkish Adaptation of Integrated Creativity Test-Preschooler- ICT-P: A Validity and Reliability Study

Binhan Koyuncuoğlu,İsmihan Artan 숭실대학교 영재교육연구소 2019 Global Creative Leader Vol.9 No.6

The aim of the study is to investigate the psychometric characteristics of the “Integrated Creativity Test-Preschooler-ICT-P” (Creative Thinking Ability Domain) for Turkish children. The study included 104 Turkish children aged 4-5 from Sinop city center. The ICT-P (Creative Thinking Ability Section) has language and drawing sub-domains. The language domain consists of imagination, fluency, flexibility and originality factors. The drawing domain consists of continuation & connection, completion, new elements addition, theme, and unconventionality factors. The translation and back translation processes were conducted for the Turkish adaptation of the scale. Expert opinions were obtained for scope, semantic and conceptual equivalence. The validity and reliability analyzes were conducted to determine that the test was successful in fulfilling certain objectives related to the characteristics that fit wanted to measure. For the reliability assessment: To predict the stability of the test, Test-Retest Reliability and Pearson Moments Multiplication Correlation Coefficient were evaluated. For observer reliability, intra-observer consistency and the inter-measure consistency percentage were utilized. For internal consistency Cronbach's alpha reliability coefficient was calculated. For determining the validity of the test, content validity with expert opinions and construct validity with factor analysis were tested. Exploratory Factor Analysis projected that the scale has a two factor structure composed of 11 sub factors. Results of CFA clarified that the scale has a two factor structure. Inner consistency coefficients and test-retest values proved that the test is a reliable measurement tool. The results of the study confirmed that the test can be used in the assessment of the creative thinking ability of 4-5 year-old Turkish children.

Evaluation of Biochemical Recurrence-free Survival after Radical Prostatectomy by Cancer of the Prostate Risk Assessment Post-Surgical (CAPRA-S) Score

Aktas, Binhan Kagan,Ozden, Cuneyt,Bulut, Suleyman,Tagci, Suleyman,Erbay, Guven,Gokkaya, Cevdet Serkan,Baykam, Mehmet Murat,Memis, Ali Asian Pacific Journal of Cancer Prevention 2015 Asian Pacific journal of cancer prevention Vol.16 No.6

Background: The cancer of the prostate risk assessment (CAPRA) score has been defined to predict prostate cancer recurrence based on the pre-clinical data, then pathological data have also been incorporated. Thus, CAPRA post-surgical (CAPRA-S) score has been developed based on six criteria (prostate specific antigen (PSA) at diagnosis, pathological Gleason score, and information on surgical margin, seminal vesicle invasion, extracapsular extension and lymph node involvement) for the prediction of post-surgical recurrences. In the present study, biochemical recurrence (BCR)-free probabilities after open retropubic radical prostatectomy (RP) were evaluated by the CAPRA-S scoring system and its three-risk level model. Materials and Methods: CAPRA-S scores (0-12) of our 240 radical prostatectomies performed between January 2000-May 2011 were calculated. Patients were distributed into CAPRA-S score groups and also into three-risk groups as low, intermediate and high. BCR-free probabilities were assessed and compared using Kaplan-Meier analysis and Cox proportional hazards regression. Ability of CAPRA-S in BCR detection was evaluated by concordance index (c-index). Results: BCR was present in 41 of total 240 patients (17.1%) and the mean follow-up time was $51.7{\pm}33.0$ months. Mean BCR-free survival time was 98.3 months (95% CI: 92.3-104.2). Of the patients in low, intermediate and high risk groups, 5.4%, 22.0% and 58.8% had BCR, respectively and the difference among the three groups was significant (P = 0.0001). C-indices of CAPRA-S score and three-risk groups for detecting BCR-free probabilities in 5-yr were 0.87 and 0.81, respectively. Conclusions: Both CAPRA-S score and its three-risk level model well predicted BCR after RP with high c-index levels in our center. Therefore, it is a clinically reliable post-operative risk stratifier and disease recurrence predictor for prostate cancer.

Metabolic Syndrome Prevalence in Renal Cell Cancer Patients

Bulut, Suleyman,Aktas, Binhan Kagan,Erkmen, Akif Ersoy,Ozden, Cuneyt,Gokkaya, Cevdet Serkan,Baykam, Mehmet Murat,Memis, Ali Asian Pacific Journal of Cancer Prevention 2014 Asian Pacific journal of cancer prevention Vol.15 No.18

Purpose: Renal cell carcinoma (RCC) is increasingly being recognized as a metabolic disease in recent studies. The aim of the present study was to identify the prevalence of metabolic syndrome (MetS) and its association with RCC among urologic patients. Materials and Methods: The study included a total of 355 participants (117 adult RCC patients and 238 age matched controls) divided into groups, with and without MetS diagnosed using the criteria of the American Heart Association/The National Heart Lung and Blood Institute. Groups were compared statistically and logistic regression analysis was performed to investigate the impact of MetS criteria on RCC risk. Results: Of the 117 RCC patients, 52 (44.4%) and of the 238 controls, 37 (15.5%) had MetS. A significant association (p<0.001) was found between the presence of MetS and RCC (OR: 4.35; 95% CI=2.62-7.21). As the number of MetS components accumulated from 3 to 5, RCC risk increased likewise from 4 to 6 times. Conclusions: MetS is more prevalent in RCC patients in Turkey compared to controls. Risk increases with the number of coexisting MetS components.

Development of Mn(III)(Schiff Base) Complexes for the Catalyst of Olefin Oxygenation to Alcohols in the Presence of NaBH4

NamHoLee,JongChulByun,JongSeokBaik,Chung-HunHan,Sung-binHan 대한화학회 2002 Bulletin of the Korean Chemical Society Vol.23 No.10

Effects of Si on the Microstructure and Work Hardening Behavior of Fe‒17Mn‒1.1C‒xSi High Manganese Steels

Renlong Xiong,Yi Liu,Haitao Si,Huabei Peng,Shanling Wang,Binhan Sun,Hanxin Chen,Hyoung Seop Kim,Yuhua Wen 대한금속·재료학회 2021 METALS AND MATERIALS International Vol.27 No.10

In order to improve the work hardening capacity under low stresses and the yield strength of conventional Hadfield steels, theeffects of Si on the microstructure and work hardening behavior of the Fe‒17Mn‒1.1C‒xSi steels under both quasi-statictensile and low load impact are investigated. It is shown that the increase of the Si contents remarkably improves the yieldstrength by 36 MPa per 1 wt% Si in the investigated steel system without significant sacrifice of ductility. The decreasingeffect of Si on the stacking fault energy is strongly affected by carbon, although the variation of carbon content was small. This led to the unexpected similar stacking fault energy between 1Si and 2Si steel. With the increase of the Si contents forthe steels, the critical strain for the onset of mechanical twinning was lowered, which was controlled by the cooperationbetween the stacking fault energy and solid solution strengthening of Si. This resulted in the earlier initiation of mechanicaltwins and an increase in the twin volume fraction. Therefore, the work hardening capacities under both quasi-static tensileand low load impact tests were enhanced. It was also found that the impact deformation decreased as more mechanical twinsabsorbed the impact energy.