347 research outputs found
Application of the Contour Method in Cold Rolled Aluminum Plates
No full textSon zamanlarda popüler olan kontur metodu, herhangi bir parçanın enine kesitinden artık gerilmeleri ölçebilmektedir. Bu metot, diğer tekniklerde olduğu gibi herhangi bir tersinir hesaplamaya gerek duymadan 2 boyutlu gerilme haritasını verebilir. Kontur metodu ucuzdur, basittir ve birçok uygulama alanına sahiptir. Dahası, delik delme ve nötron kırınımı gibi tekniklere karşın ölçüm derinliği kontur metodu için kısıtlı değildir. Bu çalışma, soğuk haddelenmiş bir alüminyum plaka üzerinde kontur metodunun bir uygulamasını sunmaktadır. Bu tezde, kalıntı gerilmeleri kontur metodu yardımıyla belirlemek için iki adet AA 5083 numunesi kullanılmıştır. Numuneler, kıvılcımla malzeme işleme yöntemi ile ikiye kesilmiş ve daha sonra kesilen yüzeylerde bulunan konturlar odak değişimi tekniği kullanılarak optik yüzey ölçümü yapan bir makine tarafından ölçülmüştür. Elde edilen veriler MATLAB yazılımı kullanılarak işlemden geçirilmiştir. Veri işleme sonrasında ölçülen konturların tersleri sonlu elemanlar modeline uygulanmış ve kalıntı gerilmelerin iki boyutlu haritasına ulaşılmıştır. Elde edilen gerilme dağılımı profilleri, doğrulanması için dilme ve halka çekirdek yöntemlerinden elde edilen sonuçlarla karşılaştırılmış ve dilme yöntemi ile iyi bir uyum sağlanmıştır. Ayrıca, kontur metodu ile elde edilen gerilme dağılım profili, soğuk haddeleme işleminden sonra beklenen gerilme yapısına uygun olmuştur. Sonuçlar halka çekirdek metodu ile karşılaştırıldığında bazı farklılıklar ortaya çıksa da gerilme profillerinin benzer bir eğilim gösterdiği gözlemlenmiştir.The recently popular contour method can measure residual stresses through cross section of any part. The contour method can give 2D stress map without any inverse calculation as other techniques do. It is cheap, simple and has many applications. Moreover, measurement depth is not limited by contrast with other techniques such as hole drilling and neutron diffraction. This study presents an application of the contour method on a cold rolled aluminum plate. In this thesis, two AA 5083 specimens were used to determine the residual stresses by the contour method. The specimens were cut in two by using wire-Electric Discharge Machining (w-EDM) and then, the contours from the cut surfaces were measured by an optical surface profiler using the focus variation technique. The obtained data were processed by MATLAB software. After data processing, inverse of the measured contours were applied to a FE model and a 2D map of the residual stress was attained. The stress distribution profiles were compared to the results obtained from Slitting and Ring Core methods for verification and a good agreement with Slitting Method was achieved. Also, the stress distribution profile from the Contour Method was according to the expected stress distribution after a cold rolling process. Although there were some differences with Ring Core Method, similar trends were observed
A multi-dimensional assessment of internet gaming disorder in children and adolescents: A case-control study
No full textBACKGROUND: Internet gaming disorder (IGD) leads to social disturbances and isolation, neglect of daily responsibilities, behavioral disorders, and physical impairments.OBJECTIVE: This study aimed to investigate the effect of IGD on spine biomechanics, range of motion in the neck and low back, and lung functions and respiratory muscle strength in children and adolescents.METHODS: Sixty-four children and adolescents with IGD (Group I) and 41 healthy controls (Group II) were included in the study. The outcomes were assessed with the Visual Analogue Scale (VAS), Internet Addiction Scale, active range of motion (AROM) in the neck and lumbar spine, posture and spinal alignment, lung function tests, and respiratory muscle strength.RESULTS: There is a significant difference in pain intensity at rest, during activity, and daily sitting time between groups (p < 0.05). Craniovertebral angle, shoulder asymmetry, thoracic kyphosis angle, cervical extension and rotation, and right lumbar rotation significantly decreased in Group I than in Group II (p < 0.05). Besides, the PEF, FEF 25-75%, and respiratory muscle strength were lower in Group I than in Group II (p < 0.05). With a multiple linear regression model, MEP, FEV1, and weekly time spent playing online games were significant predictors of internet addiction intensity (R-2 = 0.28; p = 0.02, p = 0.01, and p < 0.001, respectively).CONCLUSION: Postural misalignment and increased sedentary time cause physical health deterioration and negatively affect lung functions in children and adolescents with IGD. Consequently, considering both psychological and physical health is necessary to assess the problematic nature of internet gaming. A comprehensive assessment and multidisciplinary team approach is essential to managing the IGD
Energetska varnost v času krize: študiji primera Bolgarije in Srbije
No full textThis thesis aims to assess the EU’s external energy policy and to what degree it has been embraced by small states during the energy crisis by posing the question, “How does European Union membership influence the external energy policy decisions of small states within the foreign policy dimension during energy security crises?”. To answer this, the research is taking Bulgaria and Serbia as case studies due to their similar population sizes, GDP, and energy consumptions. This research conceptualizes energy security and energy diplomacy to understand how diplomacy and energy dependencies are interrelated and how this relationship can be utilised as a tool in international relations. Through supporting the qualitative work on foreign policy analysis with the quantitative analysis of the energy industry structures and energy dependencies of Serbia and Bulgaria in a comparative manner, this research is conducting mixed research on the issue. The comparison of Bulgaria and Serbia enables the author to analyse and understand the role of EU membership
Investigation of Factors That May Affect the Commitment of Healthcare Professionals to Their Works During the COVID-19 Pandemic Period
No full textThe environment of uncertainty created by the COVID-19 pandemic period has caused difficulties especially for healthcare professionals in their work activities. The purpose of this research is to find out which variables might affect the commitment of healthcare professionals to their works during this COVID-19 period. Based on the data announced by the Ministry of Health during the pandemic in the first quarter of 2021, it was decided to conduct a research on doctors, nurses, caregivers, and medical secretaries working in hospitals in the cities of the Eastern Black Sea Region of Turkey which generally show high risk. In the developed research model, satisfactory conditions (SC), emotional commitment to change (ECC), and psychological ownership (PO) as variables that may directly or indirectly affect the commitment of healthcare professionals to their works (CW) were used. The Smart PLS program was used in the analysis of the research model and hypothesis. It was seen that the ECC of healthcare professionals has a positive and significant (.694; p .086). Looking at the indirect (intermediary) effects obtained as a result of the research, it was seen that all of the hypotheses consist of positive coefficients. This situation reveals that the mediating variables have complementary effects on the obtained results. © The Author(s) 2022.WOS:00078698580000
Bibliometric profile of articles published in the field of gastronomy (2013-2017)
No full textBu araştırmanın amacı Türkiye’de gastronomi alanında yazılmış makalelerin
bibliyometrik olarak incelenmesidir. Araştırmanın evrenini, Türkiye’de 2013-2017
yılları arasında gastronomi alanında yayınlanan makaleler oluşturmaktadır. 2013-
2017 yılları arasında 14 farklı dergide gastronomi alanında 202 makale tespit
edilmiş olup, bu makaleler toplam 443 yazar tarafından kaleme alınmıştır.
Çalışmada nitel araştırma yöntemi tercih edilmiş olup, verilerin analizinde betimsel
analiz yöntemi kullanılmıştır. Makaleler yayınlanan dergi, yıl, dil, anahtar kelime,
yazar sayısı, tema, araştırma metotları ve referans kaynakları gibi değişkenler ele
alınarak incelenmiştir. Araştırma sonuçlarına göre, makalelerin en çok Turizm ve
Gastronomi Araştırmaları dergisinde yayınlandığı, 2017 yılında gastronomi temalı
makalelerin sayıca fazla olduğu, makalelerin %46,5 oran ile en çok iki yazar
tarafından ortak yayınlandığı, en çok makale yayınlayan üniversitenin Gazi
Üniversitesi olduğu, makalelerin en çok “Gastronomi ve Yiyecek İçecek
Endüstrisi” temasında yazıldığı tespit edilmiştirThe aim of this research is to examine the bibliometric of articles written in Turkey
in the field of gastronomy. The universe of the study consists of articles published
in the field of gastronomy in Turkey between the years 2013-2017. 202 articles on gastronomy in 14 different journals between 2013 and 2017 have been identified
and these articles have been written by 443 authors. Qualitative research method
was preferred in this study and descriptive analysis method was used in data
analysis. Articles such as journal, year, language, keyword, author number, theme,
research methods and reference sources were examined. According to the results of
the research, the most of the articles were published in the Journal of Tourism and
Gastronomy Researches, in 2017 there were a large number of gastronomy-themed
articles. It has been found that it is written in the “Gastronomy and Food Beverage
Industry” theme
Evaluation of SLC6A2 and CYP2D6 Polymorphisms’ Effects on Atomoxetine Treatment in Attention Deficit and Hyperactivity Disorder
No full textBackground There is insufficient replicated data to establish a relationship between the polymorphisms of SLC6A2 and
CYP2D6 and the treatment responses of atomoxetine (ATX) in ADHD. We focused on evaluating the effect of top-line
single nucleotide polymorphisms (SNPs) in SLC6A2 and CYP2D6 on the ATX treatment response in attention deficit and
hyperactivity disorder (ADHD).
Methods Of 160 patient records, 34 patients who met the inclusion criteria were evaluated to determine the relationship
between genotypes of ten SNPs (six of SLC6A2 and four of CYP2D6) and ATX treatment response. Additionally, the connection
between SNPs of CYP2D6 and the severity of side effects associated with ATX was analyzed in 37 patients, including
the 34 study patients, and three patients discontinued because of ATX-dependent side effects.
Results All six polymorphisms we studied in SLC6A2 were associated with the treatment response of ATX. Clinical improvement
in oppositional defiant disorder symptoms of patients with ADHD was only observed in carriers of the homozygous
“C” allele of rs3785143 (podd = 0.026). We detected an association between higher CGI-side-effect severity scores and the
“TT” genotype of rs1065852 polymorphism in CYP2D6 (p = 0.043).
Conclusions The findings of this study suggest that genotypes of polymorphisms within the SLC6A2 and CYP2D6 may play
an influential role in treatment response or the severity of side effects associated with ATX in ADHD patients
Investigation of soil gas radon changes on Manisa fault
No full textYer kabuğunun alt katmanlarında üretilen ve atmosfere doğru göç eden radon gazı yer kabuğu hareketlerinin incelenmesinde kullanılan önemli bir ön izleyicidir. Yapılan çalışmalar depremler ve volkanik patlamalarla öncesinde ve sonrasında radon konsantrasyonlarında düzensizlikler meydana geldiğini göstermiştir. Bu sebeple radon gazı fay hatları ve volkanlar çevresinde birçok ön izleyici gibi sürekli olarak takip edilmektedir. Bu proje kapsamında Türkiye diri fay haritasında yer alan ve Gediz Grabenin batı ucunu oluşturan Manisa Fayı üzerinde toprak gazı radon konsantrasyonları periyodik olarak ölçülmüş ve radon konsantrasyonlarının depremsellikle olan ilişkisi incelenmiştir.Radon gas, which is produced in the deep layers of the earth's crust and migrates into the atmosphere, is a vital precursor used in the study of the earth's crust movements. Studies have shown anomalies in radon concentrations before, during and after earthquakes and volcanic eruptions. For this reason, radon gas is continuously monitored around the fault lines and volcanoes as well as many precursors. In this project, located in Turkey active fault and soil gas on the Gediz Graben Fault forms the western end of Manisa on the map of radon concentrations were measured periodically, and relationship with seismic activity of radon concentration were investigated
From Poster Presentation to Publication: National Congress of Child and Adolescent Psychiatry
No full textIntroduction: The aims of this study were as follows: 1) to determine publication rate, time to publication, and study design of poster presentations accepted at the National Congress of Child and Adolescent Psychiatry (NCCAP) and converted to publication and the degree of first author in a published article and journal index and 2) to investigate the relationship of these data with each other
Evaluation of prioritization methods in child mental health services
No full textAmaç: Bu çalışmanın amacı çocuk ve ergen psikiyatrisi polikliniğine başvuran olgularda öncelik belirleme yöntemlerinin değerlendirilmesidir. Yöntem: Çalışma grubundaki 5-18 yaş arası 900 hasta ve/veya ebeveynlerine Güçler ve Güçlükler Anketi (GGA), Çocuk ve Gençler için Davranış Değerlendirme Ölçeği (ÇDDÖ), Kendini Değerlendirme Ölçeği (KDÖ) formları uygulanmıştır. Hekim, klinik değerlendirmesi sonucunda hastaları yönlendirmiş ve Çocuk Ruh Sağlığı Öncelik Ölçütleri (ÇRSÖÖ) ve Görsel Analog Skala (GAS) formlarını doldurmuştur. Yapılan klinik değerlendirme sonucunda öncelikli olarak izlem planlanan hastalar ile öncelikli olmayan hastaların ölçek puanları karşılaştırılmıştır. Bulgular: Öncelikli olmayanlar ile karşılaştırıldığında (n=649), öncelikli olguların (n=251) ÇDDÖ ve KDÖ problem puanları ve GGA puanları anlamlı düzeyde yüksek, ÇDDÖ Okul yeterlik puanı dışındaki tüm ÇDDÖ ve KDÖ yeterlik puanları anlamlı düzeyde düşük bulunmuştur. Çalışma grubundaki olguların ÇRSÖÖ ve GAS puanları arasında çok güçlüæ ÇRSÖÖ ve GAS puanları ile GGA, ÇDDÖ ve KDÖ problem puanları arasında orta derecede anlamlı pozitif korelasyon saptanmıştır. Değişik kesim noktalarında ÇRSÖÖ ve GAS puanları hekim yönlendirmeleriyle orta derecede tutarlı bulunmuştur. ÇRSÖÖ ve GAS'ın ‘öncelikli' yönlendirilmeyi öngörme gücünün yüksek olduğu saptanmıştır. Sonuç: ÇRSÖÖ'nün nesnel bir değerlendirme yöntemi olarak klinik değerlendirmeyi destekleyebileceği düşünülmüştür. Anahtar kelimeler: Çocuk ve ergen psikiyatrisi, Öncelik değerlendirmesi, Görsel Analog Skala Aim: This study aims to evaluate prioritization methods in patients who consult child and adolescent psychiatry clinics. Method: Strengths and Difficulties Questionnaire (SDQ), Child Behaviour Checklist (CBCL), and Youth Self Report (YSR) forms were filled out by 900 patients of age 5 to 18 and/or their parents. After triage assessments, the attending clinician filled out Children's Mental Health Priority Criteria Tool (CMHPCT) and Visual Analogue Scale (VAS). Scales scores of the patients in need of an urgent appointment as identified through the triage were compared with those of non-urgent ones. Results: When compared with the non-urgent ones (n=649), the CBCL and YSR problem scores and SDQ scores of the urgent patients (n=251) were found to be significantly higher, while all the CBCL and YSR competence scores except CBCL school competence score were found to be significantly lower. A very high positive correlation was determined between the CMHPCT and VAS scores of the patients in the study, while a significant moderate correlation was found between CMHPCT and VAS scores and SDQ, CBCL, and YSR scores. CMHPCT and VAS scores were found moderately consistent with clinician categorizations at different cut-off points. CMHPCT and VAS scores have high predictive power on categorization of cases as urgent. Conclusion: It was concluded that CMHPCT may support clinical assessments as an objective assessment method. Keywords: Child and adolescent psychiatry, Priority evaluation, Visual Analogue Scal
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