Search Results

Now showing 1 - 10 of 144
  • Article
    Citation - WoS: 38
    Citation - Scopus: 47
    Understanding Key Skills for Information Security Managers
    (Elsevier Sci Ltd, 2018) Haqaf, Husam; Koyuncu, Murat
    Information security management is a necessity for all institutions and enterprises that regard company information as valuable assets. Developing, auditing and managing information security depends upon professional expertise in order to achieve the desired information security governance. This research seeks the key skills required for the position of information security management as well as the methods to develop these skills through professional training programs. The study adopts the Delphi method which requires building a list of items through a literature survey and involves experts with certain expertise to modify the list until a consensus on less than 20% of the items is reached. Through completing three rounds of the Delphi technique - data collection, relevance voting and ranking sixteen skills are shortlisted as the key skills. In the final list, the majority belong to core information security skills, and the top two skills belong to project/process management skills and risk management skills, indicating the importance of these skills for the information security manager role. In addition, a series of related professional training programs and certifications are surveyed, the outcome of which highlights a number of most comprehensive and appropriate programs to develop these determined skills.
  • Correction
    Characterization of Lead Glazed Potteries From Smyrna (izmir/Turkey) Using Multiple Analytical Techniques; Part I: Glaze and Engobe (vol 40, Pg 2143, 2014)
    (Elsevier Sci Ltd, 2014) Ozcatal, M.; Yaygingol, M.; Issi, A.; Kara, A.; Turan, S.; Okyar, F.; Minceva-Sukarova, B.
    [No Abstract Available]
  • Article
    A New Method To Determine the Continuous Refractive Index of an Absorbing Film by Generalized Stockwell Transform
    (Elsevier Sci Ltd, 2023) Coskun, Emre; Emir, Cansu; Selamet, Semanur; Parlak, Mehmet; Ozder, Serhat
    Generalized Stockwell Transform (GST) was adapted to analyze a transmittance signal to continuously determine the refractive index and extinction coefficient. The process is built by analyzing oscillation frequencies of the transmission signal where oscillations exist. The simulation studies clearly show the advantage of the locally referenced phase property of the presented method. The validity of the method was checked for a CdS thin film. The results determined by the GST method are consistent with the results determined by envelope and other signal analyzing methods, and the literature. The noise and relative error analysis of the method was also discussed.
  • Article
    Citation - WoS: 23
    Citation - Scopus: 25
    Investigation of Optical Properties of Bi12geo20< Sillenite Crystals by Spectroscopic Ellipsometry and Raman Spectroscopy
    (Elsevier Sci Ltd, 2020) Isik, M.; Delice, S.; Gasanly, N. M.; Darvishov, N. H.; Bagiev, V. E.
    Bi12GeO20 (BGO) compound is one of the fascinating members of sillenites group due to its outstanding photorefractive and photocatalytic characteristics. The present paper aims at investigating optical properties of BGO crystals by means of spectroscopic ellipsometry and Raman spectroscopy measurements. Bi12GeO20 single crystals grown by Czochralski method were structurally characterized by X-ray diffraction (XRD) experiments and the analyses showed that studied crystals have cubic crystalline structure. Raman spectrum exhibited 15 peaks associated with A, E and F modes. Spectroscopic ellipsometry measurement data achieved in the energy region between 1.2 and 6.2 eV were used in the air/sample optical model to get knowledge about complex pseudodielectric constant, pseudorefractive index, pseudoextinction and absorption coefficients of the crystals. Spectral change of real and imaginary part of complex pseudodielectric constant were discussed in detail. Band gap energy of Bi12GeO20 single crystals was calculated to be 3.18 eV using absorption coefficient dependency on photon energy. Critical point energies at which photons are strongly absorbed were determined by utilizing the second energy derivative spectra of components of complex pseudodielectric function. Fitting of both spectra resulted in the presence of four interband transitions with energies of 3.49, 4.11, 4.67 and 5.51 eV.
  • Article
    Citation - WoS: 88
    Citation - Scopus: 105
    Industry 4.0 Technologies, Sustainable Operations Practices and Their Impacts on Sustainable Performance
    (Elsevier Sci Ltd, 2023) Yavuz, Oguzhan; Uner, M. Mithat; Okumus, Fevzi; Karatepe, Osman M.
    Using a natural resource-based view and technology-organization-environment framework as the theoretical focus, this paper develops and tests a research model in which sustainable operations practices mediate the impact of industry 4.0 technologies on sustainable performance. The model also tests sustainable operations practices as a moderator of the effect of industry 4.0 technologies on sustainable performance. Data obtained from 302 participants in Turkey's technology development regions were utilized to gauge the aforesaid linkages via partial least squares structural equation modeling. As predicted, sustainable operations practices mediate the influence of industry 4.0 technologies on sustainable performance. Contrary to the study prediction, sustainable operations practices do not significantly moderate the impact of industry 4.0 technologies on sustainable performance. Theoretical and practical implications are discussed and future research directions are offered.
  • Article
    Citation - WoS: 5
    Citation - Scopus: 6
    Pressure Injury Knowledge of Turkish Internship Nursing Students
    (Elsevier Sci Ltd, 2021) Sonmez, Munevver; Tasdemir, Nurten; Oren, Nursen
    Aim: This study aimed to describe the pressure injury (PI) knowledge of Turkish internship nursing students (INSs). Materials and methods: This descriptive study was performed using the Turkish version of the Modified Pieper Pressure Ulcer Knowledge Test. The study population consisted of INSs in a nursing program in the West Black Sea Region, Turkey. The sample of the study was 278 (74.1% of a total of 375 volunteer INSs). Results: The mean knowledge test score was 29.03 +/- 7.15 (range 11-44). The prevention/risk score was higher; only 28.4% of the students had a satisfactory test score. Conclusion: The results of this study indicated that the INSs had significant knowledge gaps regarding PI. Nursing students' knowledge deficiencies regarding PIs should be identified at undergraduate level, and the necessary educational measures should be taken.
  • Article
    Citation - WoS: 1
    Citation - Scopus: 3
    Enhancing Language Proficiency Through Mobile Extensive Listening and Podcasting: a Multifaceted Approach To Metacognition and Critical Thinking
    (Elsevier Sci Ltd, 2024) Sendag, Serkan; Caner, Mustafa; Gedik, Nuray; Toker, Sacip
    Mobile-assisted language learning (MALL) has gained considerable attention in foreign and second-language education. As part of a two-year project, this study employed a mixed-methods research design with 60 B2-level learners of English as a foreign language. The primary purpose of this study is to investigate the impact of repetitive listening and listening duration on participants' listening comprehension, speaking, critical thinking, listening strategies, and self-regulated learning strategies. The participants were divided into two groups, with the experimental group (n = 30) participating in the innovative Mobile Extensive Listening and Podcasting (MELAP) intervention. MELAP is a novel approach within the MALL framework that involves extensive listening to podcasts in the target language, content creation, and podcasting. The ten-week treatment revealed that unlike in previous studies, our experimental group improved not only in listening comprehension but also demonstrated significant gains in speaking skills and critical thinking. Notably, enhanced critical thinking skills were observed, correlated with an increased total listening duration and repeated extensive listening. Qualitative data analysis sheds light on how participants viewed the MELAP intervention, revealing what motivated them, what distractions they faced, and their opinions on developing and sharing podcasts. These findings emphasize the potential of the MELAP to enhance language skills and foster critical thinking in language learners, contributing to the ongoing discourse on the effectiveness of MALL.
  • Article
    Citation - WoS: 12
    Citation - Scopus: 11
    Enhanced Bioactivity and Low Temperature Degradation Resistance of Yttria Stabilized Zirconia/Clay Composites for Dental Applications
    (Elsevier Sci Ltd, 2022) Tufan, Yigithan; Park, Jongee; Ozturk, Abdullah; Ercan, Batur
    Yttria stabilized zirconia (YSZ)/clay composites were produced to improve osseointegration and undesired tetragonal-to-monoclinic phase transformation (low temperature degradation, LTD) of YSZ ceramics so that long-term clinical success of YSZ implants is achieved. Various amounts (0.5,1,2, and 4 wt%) of clay was incorporated to YSZ. Predetermined amounts of clay and YSZ were mixed and pressed uniaxially at 15 MPa into compacts that were subsequently pressureless sintered at 1450 degrees C. Density, compressive strength, hardness and indentation crack resistance of 4 wt% clay incorporated YSZ/clay composite were 5.77 +/- 0.01 g/cm3, 1188 +/- 121 MPa, 1223 +/- 9 HV, and 4.4 +/- 0.1 MPa root m, respectively. Additionally, biological properties of YSZ/clay composites were assessed in vitro using bone cells. Incorporation of 4 wt% clay significantly enhanced bone cell prolifer-ation, spreading, and functions. Moreover, a significant increase in the LTD resistance of YSZ was achieved upon 4 wt% clay incorporation. The findings collectively suggest that YSZ/clay composites have a potential to be used as an alternative material for dental applications.
  • Article
    Citation - WoS: 11
    Citation - Scopus: 11
    Supply chain resilience in the tourism and hospitality industry: A comprehensive examination of driving and restraining forces
    (Elsevier Sci Ltd, 2024) Erol, Ismail; Oztel, Ahmet; Dogru, Tarik; Peker, Iskender; Neuhofer, Irem Onder; Benli, Tolga
    Supply chain disruptions and a lack of resilient supply chains have adverse impact on the global economy. Particularly, complex nature of the tourism and hospitality industry makes it even more susceptible to failure when supply chain resiliency is rather low or does not exist. However, despite its significance, a comprehensive and systematic examination of building resilience in tourism and hospitality supply chains (THSCs) is lacking in the extant literature. The purpose of this study is to develop a comprehensive framework that outlines the driving and restraining forces for building resilient THSCs. The decision framework proposed in this study integrates rough interval valued neutrosophic (RIVN) force field theory of change with RIVN-ISM-MICMAC methodology. The results showed that the restraining forces, such as lack of effective regulations and incentives and effective organizational and supply chain policies are the primary factors that constrain improving resilience in THSCs. Theoretical and practical implications are discussed.
  • Article
    Citation - WoS: 6
    Citation - Scopus: 6
    Sns2 and Ho-Doped Sns2 Thin Films: Synergistic, Dft, Photocatalytic, and Antibacterial Studies
    (Elsevier Sci Ltd, 2024) Radja, Imane; Khane, Yasmina; Oliveira, Marisa C.; Longo, Elson; Ribeiro, Renan A. P.; Isik, Mehmit; Khan, Mohammad Mansoob
    This study investigates Ho-doped tin disulfide (Ho-SnS2) thin films prepared via spray coating, focusing on varying Ho doping levels (0 at. %, 2 at. %, and 4 at. %). Structural analysis through XRD and SEM showcased enhanced crystallinity and morphology in Ho-SnS2 films. Raman and XPS studies provided insight into the film's composition and chemical states. The antibacterial properties of the films were investigated using a bacterial growth inhibition assay. The results showed significant antibacterial activity against Gram-positive and Gram-negative bacteria, highlighting the potential applications of Ho-SnS2 thin films in antibacterial coatings. Ho-SnS2 films exhibited superior photocatalytic activity and antibacterial properties compared to SnS2 films, attributed to efficient charge separation. DFT analysis proposed a mechanism for the antibacterial activity. These findings highlight the efficacy of the spray coating technique in producing Ho-SnS2 films and the potential of Ho-SnS2 films for diverse applications like photocatalysis and antibacterial coatings.