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A survey on the practical use of UML for different software architecture viewpoints

Ozkaya, M. | Erata, F.

Article | 2020 | Information and Software Technology121

Context: Software architecture viewpoints modularize the software architectures in terms of different viewpoints that each address a different concern. Unified Modeling Language (UML) is so popular among practitioners for modeling software architectures from different viewpoints. Objective: In this paper, we aimed at understanding the practitioners’ UML usage for the modeling of software architectures from different viewpoints. Method: To this end, 109 practitioners with diverse profiles have been surveyed to understand practitioners’ UML usage for six different viewpoints: functional, information, concurrency, development, deployme . . .nt, and operational. Each viewpoint has been considered in terms of a set of software models that can be created in that viewpoint. Results: The survey includes 35 questions for different viewpoint models, and the results lead to interesting findings. While the top popular viewpoints for the UML-based software architecture modeling are the functional (96%) and information (99%) viewpoints, the least popular one is the operational viewpoint that is considered by 26% of the practitioners. The top popular UML modeling tool is Enterprise Architect regardless of the viewpoints considered. Concerning the software models that can be created in each viewpoint, UML's class diagram is practitioners’ top choice for the functional structure (71%), data structure (85%), concurrency structure (75%), software code structure (34%), and system installation (39%), and system support (16%) models; UML's sequence diagram is the top choice for the data lifecycle models (47%); UML's deployment diagram for the physical structure (71%), mapping between the functional and physical components (53%), and system migration (21%) models; UML's activity diagram for the data flow (65%), software build and release processes (20–22%), and system administration (36%) models; UML's component diagram for the mapping between the functional and concurrent components (35%), software module structure (47%), and system configuration (21%) models; and UML's package diagram for the software module structure (47%) models. © 2020 Elsevier B.V Daha fazlası Daha az

Predictors of long-term outcomes after polytetrafluoroethylene-covered stent-graft repair of peripheral arterial aneurysms, pseudo-aneurysms, and arterio-venous fistulas

Topcuoglu, OM | Altay, CM | Alpar, A | Kucukay, F

Article | 2020 | VASCULAR

Objectives To evaluate the primary patency rate at three years for the infra-aortic peripheral arterial pathologies treated with polytetrafluoroethylene-covered stent-grafts. Methods Patients treated with self-expandable polytetrafluoroethylene-covered stent-grafts for infra-aortic peripheral arterial aneurysms, pseudo-aneurysms, and arterio-venous fistulas were evaluated retrospectively. A total of 48 patients (35 male, 13 female; mean age: 53.8 +/- 13.5) were included with 29.0 +/- 16.5 months (median 27, range 4-70) mean follow-up period. The primary objective was to determine the primary patency rate at three years. The secondar . . .y objectives were to compare type and localization of pathology, and length and diameter of the stent-grafts with primary patency rate. Kaplan-Meier test was used as the main statistical method. Results Overall mean primary patency rate at three years was 77.10%. Polytetrafluoroethylene-covered stent-graft implantation in aneurysms had worse primary patency rate than pseudo-aneurysms and arterio-venous fistulas (66.6%, P = 0.03; 76.9%, P = 0.03; 88.2%, P = 0.01, respectively). Stent-graft location, length, and diameter are not associated with primary patency rate (P > 0.05) but stent diameter is associated with better primary assisted and secondary patency rates (P < 0.05). Conclusions Pathology of the lesion is associated with the long-term primary patency rate of polytetrafluoroethylene-covered stent-grafts but not the stent-graft location, length, or diameter. Stent diameter is associated with primary assisted and secondary patency rates Daha fazlası Daha az

Haemodynamic changes and emergence delirium in children undergoing isoflurane general anaesthesia for dental treatments: effect of propofol administration

Selvi-Kuvvetli, S. | Turan, B.S. | Bayrak, G.D. | Noyan, A.

Article | 2020 | Pediatric Dental Journal

Objective: To evaluate the effects of administration of 1 mg·kg-1 propofol before the end of surgery on the haemodynamic values and incidence of emergence delirium in paediatric dental patients retrospectively. Methods: Ninety-seven children aged between 2 and 12 who were treated under general anaesthesia in Yeditepe University Faculty of Dentistry were included. Midazolam for premedication and intravenous propofol for induction and isoflurane for maintenance of anaesthesia were used. One mg·kg-1 propofol was administered before extubation and 15 min before the end of surgery. The monitorized haemodynamic values including heart rate . . ., oxygen saturation in periferic circulation, CO2 in expirium and body temperature were collected from patient files. The level of emergence delirium was measured using the Pediatric Anaesthesia Emergence Delirium Scale. Results: Thirty-nine girls and fifty-eight boys (5.21 ± 2.32) were investigated. A statistically significant increase was found in the mean heart rate during induction and end of intubation. Expired CO2 significantly increased after the end of intubation and decreased at the end of anaesthesia. According to the Pediatric Anaesthesia Emergence Delirium Scale none of the patients were scored as emergence delirium and 52,78% of the children were scored as 0. Conclusions: When administration of single dose of propofol is used for the prevention of Emergence Delirium, constant monitoring of expired CO2 values during and after the end of intubation is essential. It can be suggested that administration of a single dose of 1 mg·kg-1 propofol prevents emergence delirium in paediatric dental patients; nevertheless this finding should be confirmed with prospective clinical trials. © 2020 Japanese Society of Pediatric Dentistr Daha fazlası Daha az

Evaluating the effects of different beverages with daily consumption habits on the wear of restorative materials

Kazak, M. | Tiryaki, M. | Turkes Basaran, E. | Benderli Gokce, Y.

Article | 2020 | Odontology

The aim of this study was to investigate the cumulative effects of fruit juices and/or alcoholic beverages on wear track area of the restorative materials by simulating the oral environment in vitro. A microhybrid, a sub-microhybrid, a nanofill resin composite, and a giomer material were used. A daily exposure habits model was created to simulate consumption frequency of acidic and/or alcoholic beverages. Two-body wear tests were carried out using a reciprocating wear tester. ANOVA and Tukey’s HSD tests were used for statistical analyses (p < 0.05). When considering experimental groups related to daily exposure habits, statistical d . . .ifference was found between restorative materials in terms of wear track area (p < 0.01). Joint effect of rmaterial and exposure on wear track area was statistically significant (p < 0.01). Giomer was found to be more affected by acidic and alcoholic beverages. Microhybrid resin composites showed less wear than the other restorative materials. Cumulative effects of alcoholic beverages and fruit juice on wear track area of materials could be related to material’s composition and frequency of consumption of acid or ethanol-containing beverages. Daily cumulative effect of acidic and alcoholic beverages was found to be stronger than only acidic fruit juice consumption in terms of wear track area. The plasticizing effect and the concentration of ethanol in the alcoholic beverages provided the basis for the increased wear track area on the restorative materials. © 2020, The Society of The Nippon Dental University Daha fazlası Daha az

Learning and teaching with preservice teachers: An action research for modelling and building faculty-school collaboration

Doğan, O. | Kılıç, H.

Article | 2020 | Elementary Education Online19 ( 1 ) , pp.18 - 30

To make refinements in school curricula is not solely enough to improve the quality of education. We need to provide professional development for both in-service and preservice teachers to enable them implement those reforms in their classes. For preservice teachers, field experiences are the best opportunity to observe experienced teachers, make practice of reforms in a classroom setting and learn from their own teaching experiences. In this study, we aim i) to propose a model for faculty-school collaboration in which teacher educators and preservice teachers teach together in an elementary mathematics classroom and ii) to discuss . . .the effects of this model on preservice teachers’, mathematics teachers’ and students’ views and practices. An action research was employed in a 7th grade mathematics classroom to investigate the impacts of the proposed model. The results revealed that our model made meaningful contributions to i) preservice teachers’ understanding and practice of teaching mathematics, ii) mentor teacher’s classroom practices and iii) elementary school students’ participations in mathematics lessons. © 2020, Ankara University. All rights reserved Daha fazlası Daha az

to hide here and kiss a beloved is not sin enough

Canak, M

Poetry | 2020 | WORLD LITERATURE TODAY94 ( 1 ) , pp.55 - 55

Turkish Daily Press Framing and Representation of Syrian Women Refugees and Gender-Based Problems: Implications for Social Integration

Narlı, N. | Özaşçılar, M. | Turkan Ipek, I.Z.

Article | 2020 | Journal of Immigrant and Refugee Studies18 ( 1 ) , pp.1 - 21

Based on a content analysis of 856 news items sampled from Turkish local and national dailies between January 2013 and December 2015, this study investigates the media coverage and framing of Syrian women refugees in Turkey. It identified13 categories of gender-based problems related to different forms of violence, sexual abuse, specifically cases of forced and early marriage as second wives, and forced prostitution, and reproductive health challenges, which were analyzed through the texture of 6 distinct frames, extracted from the news data by the use of frame analysis tools. Then the study develops hypotheses regarding the type of . . . media framing of Syrian refuge women in Turkey, their mental health and social integration into the host society. © 2019, © 2019 Taylor & Francis Group, LLC Daha fazlası Daha az

Behavior of mammalian cells on magnesium substituted bare and hydroxyapatite deposited (Ti, Mg) N coatings

Onder, S | Calikoglu-Koyuncu, AC | Kazmanli, K | Urgen, M | Kose, GT | Kok, FN

Article | 2020 | NEW BIOTECHNOLOGY6 , pp.1 - 21

TiN and (Ti,Mg)N thin film coatings were deposited on titanium substrates by using cathodic arc physical vapor deposition (arc-PVD) technique with magnesium contents of 0, 4.24 at% (low Mg) and 10.42 at% (high Mg). The presence of magnesium on both normal (hFOB) and cancer (SaOS-2) osteoblast cell behavior was investigated in (Ti, Mg) N surfaces with or without prior hydroxyapatite (HA) deposition (in simulated body fluid, SBF). Mg incorporation on TiN films was found to have no apparent effect on the cell proliferation in bare surfaces but cell spreading was better on low Mg content surface for hFOB cells. SaOS-2 cells, on the othe . . .r hand, showed an increased extra cellular matrix (ECM) deposition on low Mg surfaces but ECM deposition almost disappeared when Mg content was increased above 10 at%. HA deposited surfaces with high Mg content was shown to cause a significant decrease in cell viability. While the cells were flattened, elongated and spread over the surface in contact with each other via cellular extensions on unmodified and low Mg doped surfaces, unhealthy morphologies of cells with round shape with a limited number of extended arms was visualized on high Mg containing samples. In summary, Mg incorporation into the TiN coatings by arc-PVD technique and successive HA deposition led to promising cell responses on low Mg content surfaces for a better osteointegration performance Daha fazlası Daha az

Interaction of the mTERT telomerase catalytic subunit with the c-Abl tyrosine kinase in mouse granulosa cells

Yaba, A | Agus, S | Yildirim, E | Erdogan, CS | Yılmaz, B


Context: Oocyte and granulosa cells (GCs) have bidirectional communication and GCs play an important role in folliculogenesis and proliferation of GCs is very important for the development of ovulatory follicle. DNA double-strand breaks activate c-Abl protein tyrosine kinase and c-Abl has a functional role in repairement of DNA and control of telomere. Objective: In this study, we hypothesized that c-Abl has a regulative role on mTERT in mouse ovarian granulosa cells (GCs) and we aimed to detect c-Abl and mTERT interaction in mouse primary culture of GCs. Materials and methods: Mouse ovarian granulosa cell were cultured and siRNA-me . . .diated knockdown approach was used to knockdown c-Abl expression. Results: We showed c-Abl and mTERT immunolocalization in vivo and in vitro mouse GCs. c-Abl and mTERT were constitutively expressed in mouse granulosa cells and c-Abl presented more intense expression in granulosa cells than mTERT expression. The interaction of the c-Abl-mTERT is supported by the exhibition that c-Abl siRNA knockdown cells show decreased mTERT expression. We also present an interaction between c-Abl and mTERT by immunoprecipitation. In addition, our results indicated that the down-regulation of c-Abl was also accompanied by reduced expression of proliferating cell nuclear antigen (PCNA) in GCs. Conclusions: We suggest that mTERT may associate with the c-Abl in mouse GCs and the interactions between c-Abl and mTERT suggest a role for c-Abl in the regulation of telomerase function and proliferation in mouse granulosa cells Daha fazlası Daha az

Crystal structure, DFT and MEP study of (E)-2-{[(3-chlorophenyl)imino]methyl}-6-methylphenol

Saracoglu, H | Dogan, OE | Agar, T | Dege, N | Iskenderov, TS


In the crystal structure of the title compound, C14H12ClNO, the molecules are linked through C-H center dot center dot center dot O hydrogen bonds and C-H center dot center dot center dot pi interactions, forming chains parallel to the [010] direction. pi-pi interactions and intramolecular hydrogen bonds are also observed. The molecular geometry of the title compound in the ground state has been calculated using density functional theory at the B3LYP level with the 6-311++G(2d,2p) basis set. Additionally, frontier molecular orbital and molecular electrostatic potential map analyses were performed.

Cellular Automata Tractography: Fast Geodesic Diffusion MR Tractography and Connectivity Based Segmentation on the GPU

Hamamci, A.

Article | 2020 | Neuroinformatics18 ( 1 ) , pp.25 - 41

Geodesic based tractography on diffusion magnetic resonance data is a method to devise long distance connectivities among the brain regions. In this study, cellular automata technique is applied to the geodesic tractography problem and the algorithm is implemented on a graphics processing unit. Cellular automaton based method is preferable to current techniques due to its parallel nature and ability to solve the connectivity based segmentation problem with the same computational complexity, which has important applications in neuroimaging. An application to prior-less tracking and connectivity based segmentation of corpus callosum f . . .ibers is presented as an example. A geodesic tractography based corpus callosum atlas is provided, which reveals high projections to the cortical language areas. The developed method not only allows fast computation especially for segmentation but also provides a powerful and intuitive framework, suitable to derive new algorithms to perform connectivity calculations and allowing novel applications. © 2019, Springer Science+Business Media, LLC, part of Springer Nature Daha fazlası Daha az

The Elephant in the Room: Nurses’ Views of Communication Failure and Recommendations for Improvement in Perioperative Care

Işık, I. | Gümüşkaya, O. | Şen, S. | Arslan Özkan, H.

Article | 2020 | AORN Journal111 ( 1 ) , pp.25 - 41

Perioperative communication failures endanger patient safety and may reduce efficiency. The objective of our phenomenological research study was to determine the reasons for and consequences of perioperative communication failures and to seek recommendations for improvement. Fourteen perioperative nurses participated in this study. We conducted in-depth interviews with a semi-structured questionnaire following Colaizzi's seven-step methodology to extract themes. We organized the themes into categories: causes, consequences, and recommendations for preventing communication failure. Some themes for causes were inadequate time for preo . . .perative preparation, lack of personnel, and disruptive behaviors of physicians. Consequences of communication failure were decreased staff retention, avoidance of colleagues, threats to patient safety, and intra-team violence. Two recommendations included enforcing institutional regulations and creating team spirit. The study revealed that nurses believe that institutional regulations should not only be present but enforced. Further, nurses believe that strengthening employees’ interpersonal skills is essential to preventing communication issues. © AORN, Inc, 202 Daha fazlası Daha az

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