WoS İndeksli Yayınlar Koleksiyonu
https://hdl.handle.net/20.500.12511/4930
WoS Indexed Publications Collection2024-03-28T18:31:02ZDental students' and dental school graduates' practical skills: An international survey of perceptions of national dental associations in europe
https://hdl.handle.net/20.500.12511/12394
Dental students' and dental school graduates' practical skills: An international survey of perceptions of national dental associations in europe
Wolf, Thomas Gerhard; Dianiskova, Simone; Cavalle, Edoardo; Aliyeva, Rena; Cagetti, Maria-Grazia; Campus, Guglielmo; Deschner, James; Forna, Norina; İlhan, Duygu; Saag, Mare
Purpose: Dental students learn knowledge and practical skills to provide oral health care to the population. Practical skills must be maintained or continuously developed throughout a professional career. This cross-sectional survey aimed to evaluate the perception of practical skills of dental students and dental-school graduates by national dental associations (NDAs) in Materials and Methods: A questionnaire of 14 items collected information on pre-/postgraduate areas. Results: A total of 25 countries participated (response rate: 69.4%), with 80.0% having minimum requirements for practical skills acquisition and 64.0% starting practical training in the 3rd year of study. In countries where clinical practical work on patients begins in the 2nd year of study, practical skills of graduates are perceived as average, starting in the 3rd year of study as mainly good, starting in the 4th as varying widely from poor to very good. In total, 76.0% of respondents feel that improvements are needed before entering dental practice. Improvements could be reached by treating more patients in dental school (32.0%), increasing the quantity of clinical training (20.0%), or having more clinical instructors (12.0%). In 56.0% of the countries, it is possible to open one's own dental practice immediately after graduation, and in 16.0%, prior vocational training is mandatory. Conclusions: All participating countries in the ERO-FDI zone reported practical training in dental school, most starting in the 3rd year of study. The perception of practical skills of dental students and dental-school graduates among NDAs is very heterogeneous. Reasons for the perceived deficiencies should be further explored.
2024-01-01T00:00:00ZDual-polarized wideband 5G N77 band slotted MIMO antenna system for next-generation smartphones
https://hdl.handle.net/20.500.12511/12393
Dual-polarized wideband 5G N77 band slotted MIMO antenna system for next-generation smartphones
Kiani, Saad Hassan; Münir, Mehr E.; Savcı, Hüseyin Şerif; Rmili, Hatem; Alabdulkreem, Eatedal; Elmannai, Hela; Pau, Giovanni; Alibakhshikenari, Mohammad
In this work, a slotted wideband eight-element multiple-input multiple-output (MIMO) antenna system is presented, which covers the N77 (3.2-4.2 GHz) frequency band. The MIMO antennas are printed on a 0.8-mm-thick FR-4 substrate with dimensions of $150\times75$ mm2. The antennas are placed along the length and width of the printed circuit board (PCB). The arrangement of antenna elements offers pattern and polarization diversity, enhancing the smartphone's ability to receive signals from various directions. The wideband characteristics in the frequency range of 3.25-4.49 GHz are achieved by utilizing a T-slot and an inverted C-slotted stub together. The radiation and total efficiency are found to be >60% for all the MIMO elements. For enhanced isolation between antenna elements placed along the width of the PCB, a slot is introduced, which ensures an isolation of 14.5 dB. This helps achieve an envelope correlation coefficient (ECC) < 0.025, diversity gain (DG) >9.95 dB, and a maximum channel capacity (CC) of 40 bps/Hz. The performance of the MIMO antenna is also assessed in the presence of a human, and comparable results are observed. In addition, the examination of the specific absorption rate (SAR) confirms that it remains well within the safety margins when in proximity to humans.
2024-01-01T00:00:00ZEbeveyn Tutum Ölçeği’nin (ETÖ) 7-11 yaş çocuklarının ebeveynleri için geçerlik sınama çalışması
https://hdl.handle.net/20.500.12511/12392
Ebeveyn Tutum Ölçeği’nin (ETÖ) 7-11 yaş çocuklarının ebeveynleri için geçerlik sınama çalışması
Şendil, Telat Gül; Akyüz, Duygu; Aktaş, Büşra Eylem
Çocukların sosyalleşme alanları değiştikçe anne babaların sergiledikleri tutumların odaklandığı alanlar da değişmektedir. Orta çocukluk dönemi de çocukların fiziksel, bilişsel ve sosyalleşme alanlarında değişimler yaşadığı özel bir gelişimsel süreçtir. Ancak orta çocukluk döneminde ebeveyn tutumlarının daha nadir çalışıldığı görülmektedir. Alanyazında ebeveyn tutumlarını ölçen çeşitli ölçme araçları bulunmaktadır. Orta çocukluk dönemindeki ebeveyn tutumlarını ölçmek üzere ülkemizde kullanılan ölçekler incelendiğinde bu ölçeklerin genellikle demokratik, otoriter ve izin verici boyutları ölçmeye odaklandıkları; giderek artan sayıda çalışmanın konusu olan aşırı koruyucu tutum boyutunu içermedikleri göze çarpmaktadır. Türkçe alanyazında, aşırı koruyucu tutum boyutunu demokratik, otoriter ve izin verici boyutlarıyla birlikte değerlendiren tek ölçeğin erken çocukluk döneminde ebeveynlerin tutumlarını ölçmek üzere geliştirilen Ebeveyn Tutum Ölçeği (ETÖ) olduğu bilinmektedir. Bu nedenle bu çalışmada, orta çocukluk döneminde çocuğu olan ebeveynlerin tutumlarını ölçmek üzere, ETÖ'nün psikometrik açıdan uygun bir ölçek olup olmadığının değerlendirilmesi hedeflenmiştir. Araştırmaya toplam 392 kişi (260 anne, 121 baba, 11 cinsiyet belirtmemiş katılımcı) katılmıştır. Doğrulayıcı faktör analizi sonucunda demokratik, otoriter, izin verici ve aşırı koruyucu olmak üzere 42 maddeden oluşan dört boyutlu yapı desteklenmiştir. Boyutlar arası korelasyon analizi sonuçları, demokratik-otoriter ve demokratik-izin verici arasında olumsuz yönde, izin verici-otoriter ve izin verici-aşırı koruyucu arasında olumlu yönde anlamlı ilişki olduğunu göstermiş; aşırı koruyucudemokratik arasında anlamlı ilişki bulunmamıştır. Ölçüm değişmezliği analizini sınamak amacıyla yapılan biçimsel, metrik ve ölçek değişmezliği testleri sonuçları, ölçeğin her iki ebeveyne de uygulanabileceğini göstermiştir. Ölçümün güvenirlik analizleri kapsamında elde edilen Cronbach Alfa iç tutarlık ve test-tekrar test durağanlık katsayıları da güvenirlik düzeyinin istenir düzeyde olduğunu desteklemiştir. Elde edilen sonuçlar ETÖ’nün 7-11 yaş arası çocuğu olan ebeveynlere uygulanabilecek geçerli ve güvenilir bir ölçek olduğuna dair kanıtlar sunmuştur.; As children’s socialization changes, the areas on which parents’ attitudes focus also change. Middle childhood (age 7–11 years) is a special developmental period in which children experience changes in their physical, cognitive, and socialization aspects. However, few studies have investigated parental attitudes toward middle childhood. There are various measurement tools for parental attitudes. In our country, these tools are generally used to measure authoritative, authoritarian, and permissive dimensions, but not the overprotective dimension, which is the subject of an increasing number of studies. In Turkish literature, the only scale used to evaluate the overprotective dimension in addition to the authoritative, authoritarian and permissive dimensions is the Parent Attitude Scale (PAS). In this study, we aimed to evaluate whether PAS is a psychometrically adequate scale to measure the parental attitudes toward middle childhood. A total of 392 participants (260 mothers, 121 fathers, and 11 participants of unspecified gender) were included. Results of the confirmatory factor analysis revealed that a four-dimensional structure consisting of 42 items encompassing the authoritative, authoritarian, permissive, and overprotective dimensions was supported. Meanwhile, the results of the interdimensional correlation analysis showed that authoritative–authoritarian was negatively correlated to authoritative– permissive, while permissive–authoritarian was positively correlated to permissive–overprotective; no significant relationship was found with overprotective–authoritative. The results of the formal, metric, and scale invariance tests showed the applicability of PAS to both parents. Cronbach’s Alpha internal consistency coefficients, correlations between dimensions and test–retest results obtained within the scope of the reliability analysis also supported that the reliability level of the scale was at a desirable level. In conclusion, PAS is a valid and reliable scale applicable to parents with children aged 7–11 years.
2023-01-01T00:00:00ZThe impact of climate change on construction activity performance
https://hdl.handle.net/20.500.12511/12391
The impact of climate change on construction activity performance
Oruç, Sertaç; Dikbaş, Hüseyin Attila; Gümüş, Berkin; Yücel, İsmail
There are specific construction operations that require weather forecast data to make short-term decisions regarding construction; however, most resource-related decision making and all project management plans must be carried out to anticipate weather conditions beyond the capabilities of the currently available forecasting technologies. In this study, a series of single- and multi-risk analyses were performed with 9 km grid resolution over Turkiye using combinations of weather and climate variables and their threshold values which have an impact on the execution and performance of construction activities. These analyses will improve the predictability of potential delays, enable the project to be scheduled on a future-proof basis by considering the calculated normal and periodic predictions on the grid scale, and serve as a dispute resolution tool for related claims. A comprehensive case study showcasing the methodology and illustrating its application shows that the project duration is expected to be extended because of the impact of climate on both historical and future periods. While the original project duration was 207 days, when climate effects were considered, the optimum mean and median values increased to 255 and 238 days, respectively, for the historical period. The optimum duration mean and median change to 239 days by the end of the century, according to the SSP5-8.5 scenario, if the construction schedules consider climate change. The change in duration was mainly due to rising temperatures, which increased winter workability and reduced summer workability. However, if the historical practices are carried over to future schedules, the mean and median increase to 258 days and 244 days, respectively, which may cause unavoidable direct, indirect, or overhead costs.
2024-01-01T00:00:00Z