126 research outputs found
Strategic groups in the European airline industry and their competitive position
No full textAuthor Gamze Ilbeyi, BScMasterarbeit Universität Linz 202
Europeanization integration and identity: A social constructivist fusion perspective on Norway
No full textThis book analyses how domestic and European structures impact on national actors' identities, interests and foreign policy practices. Employing Norway as the case study area, the author uses this nation as an example to assess Europeanization and identity politics across the European Union (EU).Utilising an original and innovative approach called 'social constructivist fusion perspective', the author addresses Europeanization across several key factors. The author assesses the influence of the EU on 'half-way member countries', and the impact of identity politics and domestic structures, which factors contribute to or hinder Europeanization, and attempts to empirically measure Europeanization at the actor level. It analyses the impact of domestic and European structures on the identities, interests, attitudes and foreign policy practices of the Norwegian policy-makers. Whilst contributing to knowledge and literature on how constructivist approaches can be utilized in empirical studies of political elites, this book goes beyond theory to demonstrate that Europeanization is not only institutional, and provides evidence of the influence of identity politics.Europeanization, Integration and Identity will be or interest to students, scholars and policy-makers in the field of European Union politics, international relations, social constructivism and Scandinavian politics. © 2012 Gamze Tanil
Effect of glide path and apical preparation size on the incidence of apical crack during the canal preparation using Reciproc, WaveOne, and ProTaper Next systems in curved root canals: A stereomicroscope study
No full textThis study evaluated the effect of creating a glide path and apical preparation size on the incidence of apical cracks during canal preparation in mandibular molar teeth with curved canals. One hundred and forty extracted teeth were used. The teeth were randomly assigned to one control group or six experimental groups (n=20 per group) for canal preparation. No preparation was performed on teeth in the control group. In three of the six experimental groups, a glide path was not created; a glide path was created on the curved mesial canals of all teeth in the remaining three experimental groups. All teeth in experimental groups were then instrumented with the following systems: Reciproc, WaveOne (WO), and ProTaper Next (PTN). Digital images of the apical root surfaces of these teeth were recorded before preparation, after instrumentation with size 25 files, and after instrumentation with size 40 files. The images were then inspected for the presence of any new apical cracks and propagation. There was no significant difference between the experimental groups during canal preparation using size 25 files (p>0.05). Reciproc and WO caused more new apical cracks than did PTN during canal preparation using size 40 files (p0.05). Performing a glide path prior to canal preparation did not change the incidence of apical crack during preparation. Additionally, increasing apical preparation size may increase the incidence of apical crack during canal preparation. SCANNING 38:585-590, 2016. (c) 2016 Wiley Periodicals, Inc
The Effect of Different Irrigation Agitation Techniques on Postoperative Pain in Mandibular Molar Teeth with Symptomatic Irreversible Pulpitis: A Randomized Clinical Trial
No full textIntroduction: This study compared the effect of several final irrigation agitation techniques (sonic agitation, passive ultrasonic irrigation, and manual dynamic agitation [MDA]) in comparison with needle irrigation on postoperative pain in mandibular molar teeth with symptomatic irreversible pulpitis. Methods: One hundred sixty-eight patients with a single tooth diagnosed as symptomatic irreversible pulpitis were selected. Teeth were randomly assigned to 4 groups based on the final irrigation methods. In group 1 (needle irrigation), irrigation was conducted without agitation with a side-port needle; in group 2, sonic agitation was used; in group 3, passive ultrasonic irrigation was used; and in group 4, MDA was used. Teeth were then obturated with gutta-percha and a resin-based sealer using the cold lateral compaction technique. The presence of postoperative pain was assessed after 6, 24, 48, and 72 hours and 1 week. Results: At the 6- and 24-hour time intervals, group 4 patients reported more intense postoperative pain than those patients in groups 1, 2, and 3 (P .05), and in all groups the intensity of postoperative pain decreased over time. Conclusions: MDA caused greater postoperative pain after endodontic therapy in mandibular molar teeth with symptomatic irreversible pulpitis compared with the other methods in the first 24 hours
Karanlık kişilik özelliklerinin kişilerarası bağlamda risk alma, kendini sunma ve öz-farkındalık duyguları ile ilişkisinin incelenmesi
No full textGültekin, Gamze (Dogus Author) -- 26.06.2018 tarihine kadar kullanımı yazar tarafından kısıtlanmıştır.Bu çalışmanın amacı Karanlık Kişilik Özelliklerinin kişilerarası bağlamda keşfedilmesi ve kişilerarası risk kavramı altında bulunan, etik risk alma, sosyal risk alma, statü odaklı risk alma değişkenleriyle ilişkisinin incelenmesidir. Buna ek olarak, Karanlık Kişilik Özelliklerinin kendini sunma ve öz farkındalık duyguları olarak adlandırılan benlik kavramları ile ilişkisi incelenmektedir. 171 kadın 175 erkek olmak üzere toplam 346 katılımcıdan oluşmaktadır. Çalışmada kullanılan materyaller, demografik bilgi formu, Statü odaklı risk alma ölçeği, Alan odaklı risk alma ölçeği, Revize edilmiş Kendini Sunma Ölçeği, ve Uygunluk Endişesi Ölçeği'dir. Çalışmada kullanılan analizler doğrulayıcı faktör analizi, korelasyon analizi ve çoklu lineer regresyon analizidir. Çalışmada bulunan temel sonuçlara göre her Karanlık Kişilik Özelliği statü-amaçlı risk alma ile pozitif yönde ilişki gösterirken sosyal risk alma ile negatif ilişki göstermektedir; fakat sadece Makyavelizm ve psikopati etik risk alma ile pozitif ilişki göstermektedir. Kendini sunma davranışı hem açgözlü hem de koruyucu stillerle narsisizm ve Makyavelizm ile pozitif yönde ilişki gösterirken psikopati sadece koruyucu stil ile pozitif ilişki göstermiştir. Öz farkındalık duygularıyla olan ilişkiye bakıldığında ise, sadece narsisizm utanç ile negatif ilişki gösterirken, tüm karanlık kişilik özellikleri suçlulukla negatif yönde ilişki göstermiştir. Kibirli gururla olan ilişkide hem Makyavelizm hem psikopati pozitif yönde ilişki gösterirken, gerçekçi gururda ise sadece psikopati negatif yönlü ilişki göstermiştir. Bulgular ilgili literatür çerçevesinde tartışılmıştır.The aim of this study is to examine Dark Triad personality traits in interpersonal context by examining their relationship with ethical risk taking, social risk taking and status-driven risk taking which are conceptualized as interpersonal risk taking. Moreover, Dark Triad's relationship with self-concepts is examined, namely self-presentation styles and self-conscious emotions. 346 participants, 171 men and 175 women participated in this study. The questionnaire used in the present study included demographic questions, Short Dark Triad Scale, Status-driven Risk Taking Scale, Domain-specific Risk Taking Scale, Revised Self-Monitoring Scale and Concern for Appropriateness Scale. Confirmatory Factor Analysis, Correlation Analysis and Multiple Linear Regression Analysis were conducted. The main results found in the study were that each Dark Triad trait was positively correlated with Status-driven risk taking and social risk taking, however only psychopathy and Machiavellianism showed positive relationship with ethical risk taking. For the self-presentation, narcissism and Machiavellianism were positively related with both acquisitive and protective styles; psychopathy was only related with protective self-presentation style. For the self-conscious emotions, only narcissism was negatively related with shame; all facets of dark triad were negatively related with guilt. For the hubristic pride, both Machiavellianism and psychopathy were related positively; for the authentic pride only psychopathy showed negative relationship. Results are discussed in the light of literature
The Effect of Apical Positive and Negative Pressure Irrigation Methods on Postoperative Pain in Mandibular Molar Teeth with Symptomatic Irreversible Pulpitis: A Randomized Clinical Trial
No full textIntroduction: This study compared the effect of conventional needle irrigation (positive pressure) and the EndoVac system (Discus Dental, Culver City, CA) (negative pressure) on postoperative pain in mandibular molar teeth with symptomatic irreversible pulpitis. Methods: One hundred sixteen patients with symptomatic irreversible pulpitis were selected. Teeth were randomly assigned to 2 groups according to the irrigation methods performed during root canal preparation. In group 1, root canal irrigation was performed using a syringe and a 31-G side-port needle (NaviTip; Ultra dent, South Jordan, UT). In group 2, the EndoVac system was used for irrigation. Teeth were then obturated with gutta-percha and a resin-based sealer using the cold lateral compaction technique. The presence of postoperative pain was assessed after 6, 24, 48, and 72 hours and 1 week. Results: At 6-, 24-, and 48-hour time intervals, group 1 patients reported more intense postoperative pain than patients in group 2 (P .05), and in both groups the intensity of postoperative pain decreased over time. Conclusions: Apical positive pressure irrigation caused greater postoperative pain after endodontic therapy of mandibular molar teeth with symptomatic irreversible pulpitis compared with the apical negative pressure irrigation system
The effect of copper coated metal hydride at different ratios on the reaction kinetics
No full textIn this study, the process parameters that affect the improvement of hydrogen storage material properties were investigated. In order to accelerate the hydrogen charge/ discharge processes and to obtain the required hydrogen at the desired flow rates in a short time, the thermal conductivity of the storage materials has been improved, and density analyses have been made. The ideal grinding time has been determined for the LaNi5 material. Within the scope of the experimental studies, the thermal conductivity coefficients of LaNi5 coated with copper and LaNi5 ground for 5 h and coated with copper were increased by 500-750%, and the copper plating ratios were optimized. The materials obtained were characterized by XRD, SEM, and their density was measured with the Helium Pyknometer device and their thermal conductivity coefficients with the Hot Disk Thermal Constants Analyzer. In addition, the hydrogen storage of materials with increased thermal conductivity was investigated experimentally in the metal hydride reactor at the determined pressure. In the study, it was seen that the storage material coated with copper increases the heat transfer, reduces the hydrogen charging time in the metal hydride reactor, and increases the stable discharge time. & COPY; 2022 Hydrogen Energy Publications LLC. Published by Elsevier Ltd. All rights reserved.Scientific and Technical Research Council of Turkey (TUBITAK) [121M529]; Council of Higher Education (YOK)The authors would like to thank the Scientific and Technical Research Council of Turkey (TUBITAK) for the financial support under contract number 121M529. The first author, Gamze ATALMIS, would like to thank the Council of Higher Education (YOK) for the 100/2000 Ph.D. Scholarship Program
The effect of expanded natural graphite added at different ratios of metal hydride on hydrogen storage amount and reaction kinetics
No full textIn this study, metal hydride pellets were formed to accelerate the hydrogen charge/ discharge processes. The heat transfer in hydrogen storage material was improved by employing Expanded natural graphite (ENG). The ideal grinding time for LaNi5 material was determined to be 5 h. In the study, LaNi5 alloy was mixed with ENG in 1%, 5%, 10%, and 20% proportions by weight. The amount of hydrogen stored in the reactor by each mixture at 10 bar pressure was measured depending on time. Within the scope of experimental studies, the thermal conductivity coefficient of LaNi5 materials containing 20% ENG by weight was increased by 1380%. Thus, hydrogen charge/discharge processes were accelerated. Storage materials were characterized by XRD and SEM. The thermal conductivity coefficients were measured with the Hot Disk Thermal Constants Analyzer device, and the densities were measured with the Helium Pycnometer device. LaNi5 was chosen as the storage material in the study. It was found that 1-5 wt% ENG addition increased the reaction kinetics without significantly reducing the hydrogen storage capacity in storage alloys. However, in alloys with higher ENG concentrations, the hydrogen storage capacity decreased. The reaction kinetics were increased in the range of 135-260%. (c) 2023 Hydrogen Energy Publications LLC. Published by Elsevier Ltd. All rights reserved.Scientific and Technical Research Council of Turkey (TUBITAK) [121M529]; Council of Higher Education (YOK) [100/2000]The authors would like to thank the Scientific and Technical Research Council of Turkey (TUBITAK) for the financial support under contract number 121M529. The first author, Gamze ATALMIS,, would like to thank the Council of Higher Education (YOK) for the 100/2000 Ph.D. Scholarship Program
Assessing air quality in Aksaray with time series analysis
No full textSulphur dioxide (SO2) is a major air pollutant caused by the dominant usage of diesel, petrol and fuels by vehicles and industries. One of the most air- polluted city in Turkey is Aksaray. Hence, in this study, the level of SO2 is analyzed in Aksaray based on the database monitored at air quality monitoring station of Turkey. Seasonal Autoregressive Integrated Moving Average (SARIMA) approach is used to forecast the level of SO2 air quality parameter. The results indicate that the seasonal ARIMA model provides reliable and satisfactory predictions for the air quality parameters and expected to be an alternative tool for practical assessment and justification
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