Search Results

Now showing 1 - 10 of 203
  • Article
    Citation - WoS: 12
    Skeletonization-based beam finite element models for stochastic bicontinuous materials: Application to simulations of nanoporous gold
    (Cambridge Univ Press, 2018) Soyarslan, Celal; Argeso, Hakan; Borgmann, Swantje
    An 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.
  • 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: 7
    Citation - Scopus: 10
    Efficient 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: 22
    Citation - Scopus: 22
    The 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, Fusun
    We 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: 17
    Citation - Scopus: 30
    Analysis of Cultural and Gender Influences on Teamwork Performance for Software Requirements Analysis in Multinational Environments
    (Wiley, 2012) Fernandez-Sanz, L.; Misra, Sanjay
    Software 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: 31
    Citation - Scopus: 36
    New Meir-Keeler Type Tripled Fixed-Point Theorems on Ordered Partial Metric Spaces
    (Hindawi Ltd, 2012) Aydi, Hassen; Karapinar, Erdal
    In this paper, we prove some new Meir-Keeler type tripled fixed-point theorems on a partially ordered complete partial metric space. Also, as application, some results of integral type are given.
  • Article
    Citation - WoS: 51
    Citation - Scopus: 57
    Tripled Coincidence Point Results for Generalized Contractions in Ordered Generalized Metric Spaces
    (Springer international Publishing Ag, 2012) Aydi, Hassen; Karapinar, Erdal; Shatanawi, Wasfi
    In this paper, we establish some tripled coincidence point results for a mixed g-monotone mapping F : X (3) -> X satisfying (psi, I center dot)-contractions in ordered generalized metric spaces. Also, an application and some examples are given to support our results.
  • Article
    Citation - WoS: 10
    Citation - Scopus: 10
    Electroinitiated Polymerization of 2-Allylphenol
    (Springer-verlag, 2000) Cihaner, A; Önal, AM
    Redox behaviour of 2-allylphenol (2APhOH) was studied by using cyclic voltammetry (CV) and electroinitiated polymerization was conducted at the measured peak potentials. Constant potential electrolysis (CPE) of the monomer was carried out in acetonitrile-sodium perchlorate, solvent-electrolyte couple, at room temperature. Polymerization of the monomer yielded insoluble polymer films on the surface of the electrode together with the low molecular weight polymers in the bulk of the solution. The structural analysis of the polymers were carried by H-1-NMR and FTIR spectroscopy. Molecular weight of the soluble polymer was determined by GPC. Thermal properties of the polymer film and soluble polymer were studied by DSC. The course of electroinitiated polymerization was monitored by in-situ UV-VIS spectroscopy.
  • Article
    Citation - WoS: 20
    New Statistical Randomness Tests Based on Length of Runs
    (Hindawi Ltd, 2015) Doganaksoy, Ali; Sulak, Fatih; Uguz, Muhiddin; Seker, Okan; Akcengiz, Ziya
    Random sequences and random numbers constitute a necessary part of cryptography. Many cryptographic protocols depend on random values. Randomness is measured by statistical tests and hence security evaluation of a cryptographic algorithm deeply depends on statistical randomness tests. In this work we focus on statistical distributions of runs of lengths one, two, and three. Using these distributions we state three new statistical randomness tests. New tests use chi(2) distribution and, therefore, exact values of probabilities are needed. Probabilities associated runs of lengths one, two, and three are stated. Corresponding probabilities are divided into five subintervals of equal probabilities. Accordingly, three new statistical tests are defined and pseudocodes for these new statistical tests are given. New statistical tests are designed to detect the deviations in the number of runs of various lengths from a random sequence. Together with some other statistical tests, we analyse our tests' results on outputs of well-known encryption algorithms and on binary expansions of e, pi, and root 2. Experimental results show the performance and sensitivity of our tests.
  • Article
    Citation - WoS: 1
    Citation - Scopus: 3
    Spectral Approach To Derive the Representation Formulae for Solutions of the Wave Equation
    (Hindawi Publishing Corporation, 2012) Guseinov, Gusein Sh.
    Using spectral properties of the Laplace operator and some structural formula for rapidly decreasing functions of the Laplace operator, we offer a novel method to derive explicit formulae for solutions to the Cauchy problem for classical wave equation in arbitrary dimensions. Among them are the well-known d'Alembert, Poisson, and Kirchhoff representation formulae in low space dimensions.