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Article Citation - WoS: 12Skeletonization-based beam finite element models for stochastic bicontinuous materials: Application to simulations of nanoporous gold(Cambridge Univ Press, 2018) Soyarslan, Celal; Argeso, Hakan; Borgmann, SwantjeAn efficient representative volume element generation strategy is developed in modeling nanoporous materials. It uses periodic 3D beam finite element (FE) models derived from skeletonization of spinodal-like stochastic microstructures produced by a leveled random field. To mimic stiffening with agglomeration of the mass at junctions, an increased Young's modulus is assigned to the elements within the junction zone. The effective Young's modulus, Poisson's ratio, and universal anisotropy index are computed. A good agreement of the Young's modulus predictions with those obtained from experimental results for phase volume fractions 0.20 < phi(B) < 0.50 is observed. Moreover, the elastic anisotropy index of the generated beam networks shows sufficient proximity to isotropy. Finally, it is demonstrated that, as compared to the simulation statistics of voxel-FE models, for the beam-FE models over 500-fold computational acceleration with 250-fold less memory requirement is provided.Article Investigating of Dynamic Compressive Response of Plain and Fiber-Reinforced Concrete Structures at Various Strain Rates(SAGE Publications Ltd, 2025) Gunay, A.R.; Hafizoglu, H.; Akdeniz, E.; Kaya, C.Across the world, studies on building design are conducted at various scales. The behavior of structures under static loading has been the subject of various studies in the modern era, leading to the development of significant standards and application techniques. However, studies on the behavior of structures under dynamic loading have remained limited. This study investigated the dynamic compressive behavior of plain and fiber-reinforced C60 and C80 concrete samples through experimental studies at room temperature. In addition, this study also investigated dynamic deformation and fracture behavior of plain concrete samples by numerical studies. For this purpose, plain and fiber-reinforced C60 and C80 concrete samples were produced. Experimental studies covered both static and dynamic compression tests. Following the static tests, dynamic test samples with a diameter and length of 10 mm were produced from the static test samples by water jet cutting method and were dynamically compressed in the Split Hopkinson Pressure Bar (SHPB) test setup. Dynamic compression test results showed that the strength of plain and fiber-reinforced C60 and C80 concretes were obtained in the range of 74–162 MPa at an average strain rate of between 139 and 650 s−1. Experimental results also showed that the fiber addition affected the dynamic increase factor (DIF) and impact toughness of both C60 and C80 concretes in a good manner. To compare experimental and numerical results, a dynamic compression test condition was visualized with a high-speed camera and simulated with the Ls-Dyna software using the finite-element method. Numerical studies indicated a good correlation with dynamic compression results in terms of crack formation and fracture progress. © IMechE 2025.Article Citation - WoS: 27Citation - Scopus: 35A Wavelet-Based Feature Set for Recognizing Pulse Repetition Interval Modulation Patterns(Tubitak Scientific & Technological Research Council Turkey, 2016) Gencol, Kenan; At, Nuray; Kara, AliThis paper presents a new feature set for the problem of recognizing pulse repetition interval (PRI) modulation patterns. The recognition is based upon the features extracted from the multiresolution decomposition of different types of PRI modulated sequences. Special emphasis is placed on the recognition of jittered and stagger type PRI sequences due to the fact that these types of PRI sequences appear predominantly in modern electronic warfare environments for some specific mission requirements and recognition of them is heavily based on histogram features. We test our method with a broad range of PRI modulation parameters. Simulation results show that the proposed feature set is highly robust and separates jittered, stagger, and other modulation patterns very well. Especially for the stagger type of PRI sequences, wavelet-based features outperform conventional histogram-based features. Advantages of the proposed feature set along with its robustness criteria are analyzed in detail.Letter Medical Education During the Covid-19 Pandemic: Experience From a Newly Established Medical School(Springer india, 2020) Tulek, Necla; Gonullu, Ugur[No Abstract Available]Article Citation - WoS: 6Citation - Scopus: 6Which Is Better To Predict Erectile Dysfunction and Male Sexual Function in the Context of Metabolic Syndrome: Triglyceride-Glucose Index or Visceral Adiposity Index?: a Retrospective Cross-Sectional Study(Springer, 2024) Bolat, Mustafa Suat; Bolat, Ipek Akalin; Dundar, Cihad; Asci, RamazanPurposeMany factors influence male sexual function, including metabolic disorders such as metabolic syndrome (MetS). We aimed to investigate the effects of two metabolic indices, the triglyceride-glucose (TyG) index and the visceral adiposity index (VAI), on male sexual function.MethodsA total of 400 men having sexual dysfunction were included. Anthropological data, comorbidities were recorded. Serum total testosterone, prolactin, and estradiol levels were recorded. Sex-specific VAI was calculated using the [(WC/39.68) + (1.88xMI)] x (TG/1.03) x (1.31/HDL) formula and using Ln (fasting triglycerides) x (fasting glucose)/2] formula, TyG index was calculated. Turkish-validated 15-item long-form of the International Index of Erectile Dysfunction (IIEF) questionnaire and male sexual health questionnaire (MSHQ) were used for erectile function and ejaculatory function, respectively. The ROC analysis was used to evaluate the predictive abilities of TyG and VAI cut-off values for ED risk.ResultsA higher TyG index and VAI were associated with an increased risk of ED. The presence of MetS further worsened sexual function, with lower scores in sexual satisfaction, orgasm, desire, and general satisfaction. The TyG index and VAI showed similar predictive abilities for ED. Patients with MetS had worse ejaculation quality compared to those without MetS.ConclusionsThese findings highlight the potential of the TyG index and VAI as convenient tools for predicting and assessing sexual dysfunction in men, particularly in the context of metabolic disorders. Early detection and intervention for metabolic syndrome and insulin resistance may help to mitigate their negative impact on male sexual function.Article Citation - WoS: 7Citation - Scopus: 10Efficient Software Review Process for Small and Medium Enterprises(inst Engineering Technology-iet, 2007) Mishra, D.; Mishra, A.A considerable amount of software is produced world-wide by small and medium enterprises (SMEs). These organisations do not have enough resources to implement a rigorous quality plan. It has been established that reviews of various artifacts play a very important role in ensuring the quality of software. Traditional review methods are rigorous and their implementation is cumbersome for SMEs. A new review process which is easy to implement and requires almost no documentation is introduced. It is based on reviewers' efforts to produce high-quality software while minimising the inspection cost. Additionally, people who are conducting this review need not be present at the same place during most phases of the review process. This process has been successfully implemented in a CMM level 3 software development company intending to achieve CMMI level 5 and results are found to be quite encouraging.Article Citation - WoS: 2Citation - Scopus: 2An Investigation of Recycled Rubber Composites Reinforced With Micro Glass Bubbles: an Experimental and Numerical Approach(Taylor & Francis Ltd, 2024) Kabakci, Gamze Cakir; Bayraktar, Emin; Aslan, OzgurRecycled rubber is widely used for its lightweight and cost-effective properties but often has limited mechanical strength, restricting its applications. This study enhances the mechanical performance of devulcanised recycled rubber by reinforcing it with micro glass bubbles (GBs) featuring a density of 0.65 g/cm(3) and an elastic modulus of 3.5 GPa, offering a high strength-to-density ratio. Uniaxial compression tests were conducted on samples with GB volume fractions of 5%, 10%, and 15%. Results were validated through finite element analysis (FEA) in ABAQUS/Standard, incorporating randomised GB distributions. A 2D representative volume element (RVE) with randomly distributed GBs was modelled, applying periodic boundary conditions to simplify the composite into an equivalent homogeneous material. Numerical simulations assessed the effects of GB diameters (30, 40, and 50 mu m) and inclusion size ranges (20-50 mu m and 10-60 mu m), finding minimal impact on results. The RVE, sized at 238 mu m, accurately represented macroscale composite behaviour. Stress-strain behaviour was analysed using average stress and strain tensors. The strong agreement between experimental and numerical results validates the proposed method, demonstrating its accuracy in predicting the mechanical behaviour of the reinforced composite material.Article Citation - WoS: 22Citation - Scopus: 22The impact of the using high-fidelity simulation and standardized patients to management of postpartum hemorrhage in undergraduate nursing students: A randomized controlled study in Turkey(Taylor & Francis inc, 2019) Karadas, Merve Mert; Terzioglu, FusunWe examined the efficiency of different simulation methods for the improvement of knowledge and skills of nursing students in the management of postpartum hemorrhage. A total of 84 nursing students participated in the study. Data were obtained using a Semi-Structured Questionnaire Form, Student Satisfaction Evaluation Form, Effective Communication Skills Checklist, Spielberger's State-Trait Anxiety Inventory, and Skills Evaluation Form for Postpartum Bleeding Management. We suggest that the use of different simulation methods may be effective in improving the knowledge and skills of nursing students in the management of postpartum hemorrhage.Article Citation - WoS: 17Citation - Scopus: 30Analysis of Cultural and Gender Influences on Teamwork Performance for Software Requirements Analysis in Multinational Environments(Wiley, 2012) Fernandez-Sanz, L.; Misra, SanjaySoftware development is mainly a social activity where teams of developers should work as a coordinated unit to fulfill the needs of customers. Studies have shown the importance of teamwork ability as the main skill for software professionals both in local settings and in global software development. Teamwork performance can be evaluated according to different approaches but we need deeper analysis within software teams of differences in individuals' performance related to culture, nationality or even gender. We applied a simple evaluation experience named teamwork benefits awareness (TBA) to groups of last-year students of computing degrees with experience as junior IT professionals during intensive multinational workshops based on international software projects. TBA allowed to measure individual and team performance during a requirements analysis session based on a real project. Results segmented by nationality and gender are presented and analysed in comparison with the data collected from computing professionals in local settings. In general, no significant differences have been found out although interesting relations are suggested with two Hofstede's country indicators. TBA is also perceived as a good technique for highlighting both teamwork benefits as well as the nature of real situations of software requirements analysis and orientation to customer needs.Article Citation - WoS: 19Citation - Scopus: 20The consumers' social media use in choosing physicians and hospitals: the case study of the province of Izmir(Wiley, 2017) Tengilimoglu, Dilaver; Sarp, Nilgn; Yar, Cemre Eda; Bektas, Meral; Hidir, Mehmet Nil; Korkmaz, EsinManifested as a reflection of the Internet technology progress, web 2.0 has transformed communication among people to different dimensions while increasing the social use of Internet. Thus, the concept of social media has entered our lives. Blogs, forums, Facebook, Twitter and YouTube applications are but few of the social media platforms with active users exceeding millions. As in many other subjects, these and others are also environments where people share information and their positive or negative experiential views with respect to healthcare issues and services. Hence, the social media communication and exchange of information are deemed influential on the process of receiving health services. In the present study that aims to determine social media use of individuals in their choice of physicians, dentists and hospitals, a survey, as a data collection instrument, has been carried out to 947 residents of the province of Izmir. Individuals participating in the study have stated that they have used social media in choosing a physician (41.9% of the participants), dentist (34.1% of the participants) and hospitals (41.7% of the participants). The study has revealed that individuals are affected by social media in their healthcare choices. Copyright (C) 2015 John Wiley & Sons, Ltd.
