A phenomenological study of military retirees: Reasons for retirement and post-retirement employment in Turkish military staff

Recently, an increasing number of retired individuals decide to return to work and seek for post-retirement employment. Although research has already focused on individual and organizational based factors in retirement and post-retirement, the works are limited in some observable settings and well-known professions. The purpose of this study is to delve into the reasons for retirement and post-retirement employment and describe how human capital and social capital takes role in post-retirement employment. A qualitative approach was used with a descriptive phenomenological research design. Ten volunteer military retirees constitute the participants; in-depth semi-structured interviews were conducted for data collection. Findings indicate that social and human capital heavily affect the retirement process, and trigger the return to work. The higher the hierarchy of the military staff, the more the social factors are motivating them to post-retirement employment, contrarily. For lower hierarchy, financial issues are more dominant for returning to work. Additionally, the effect of social capital on the post-retirement employment varies according to individual differences such as dependents, beliefs, and passions. The study contributes to theoretical discussions related to retirement and post-retirement employment reasons that can be linked to existing explanations

DANIAN (SBZ2) LARGER FORAMINIFERA FROM THE BECIRMAN FORMATION (SOUTHEASTERN TURKEY) AS EVIDENCE OF ROTALIIDS DIVERSITY IN LOWER PALEOCENE SHALLOW-WATER ENVIRONMENTS

An important shallow marine deposit is described and illustrated with focus on the systematics and biostratigraphy of larger foraminifera from three stratigraphic sections of the Becirman Formation from the Batman and Siirt regions (Southeastern Turkey). A quite diverse association, mostly dominated by rotaliids (11 species belonging to 7 genera) and subordinate porcelaneous and agglutinated taxa, is documented as well. The fossil assemblage, including Elazigina dienii, Rotospirella conica, Praelockhartia cf. neoakbari, Cuvillierina cf. sireli associated with Mardinella daviesi and Idalina sinjarica, indicates the late Danian SBZ2. The abundance of rotaliids is linked, in this time frame, to the recovery of the shallow benthic communities after the K/Pg extinction including increase of surface water temperatures and oligotrophy. This was possibly due to the climatic warming recorded at the end of the Danian (Latest Danian Event), thus promoting a rapid adaptative radiation of rotaliids at genus rank

Vitamin D Deficiency and Insufficiency in Obese Children and Adolescents and Its Relationship with Insulin Resistance

Objectives. We aimed to determine the relationship between insulin resistance and serum 25-hydroxyvitamin D (25-OHD) levels in obese children and their nonobese peers. Materials and Methods. Included in the study group were 188 obese children (aged 9–15 years), and 68 age- and gender-matched healthy children of normal weight as control group. Anthropomorphic data were collected on patients and fasting serum glucose, insulin, serum lipids, alanine aminotransaminase (ALT) and 25-OHD were measured. The homeostatic model assessment of insulin resistance (HOMA-IR) was calculated in both groups. Results. The levels of 25-OHD in the obese group were significantly lower than those of the nonobese (). HOMA-IR, triglycerides, low-density lipoprotein, and ALT levels in the obese group were significantly higher than values of control group ( and , resp.). In the obese group, vitamin D deficiency, insufficiency, and sufficiency (25-OHD 10 ng/dl; > 20 ng/dl, resp.) were not correlated with HOMA-IR (, ). HOMA-IR was negatively correlated with BMI, BMI SDS, and BMI%, and triglycerides, low-density lipoprotein, and ALT levels (). Conclusion. The insulin resistance of the obese subjects who were vitamin D deficient and insufficient did not statistically differ from those with vitamin D sufficiency. Low 25-hydroxyvitamin D levels were not related with higher insulin resistance in obese children and adolescents. In obese subjects, insulin resistance was affected more from BMI, BMI SDS, and BMI% than from 25-hydroxyvitamin D levels

Kanser ve çoklu ilaç dirençliliği tespiti için mems tabanlı dielektroforetik hücre ayrıştırma sistemi geliştirilmesi

TÜBİTAK EEEAG01.06.2015Kanser tüm dünyada en önemli ikinci ölüm sebebi olup, her yıl 8.2 milyon insan kanser nedeniyle hayatını kaybetmektedir. Kanser tedavisinde başarının en önemli etkenlerinden biri erken teşhistir. Metastaz ve çoklu ilaç dirençliliği (ÇİD) ise ölüm oranının artmasına neden olan en önemli iki sebeptir. Bu nedenle metastaz ve ÇİD gelişiminin tedavi öncesi ve süresince takip edilmesi, uygun tedavi yönteminin seçilebilmesi açısından oldukça önemlidir. Ancak, klinikte metastaz ve ÇİD gelişiminin tespitine yönelik yaygın olarak kullanılabilen bir yöntem bulunmamaktadır. Önerilen projenin temel amacı şüphelenilen dokuda kanser hücrelerinin varlığını tespit eden ve bu kanser hücrelerinin çoklu ilaç direnci (ÇİD) mekanizması geliştirip geliştirmediğinin kontrolünü sağlayan, dielektroforez (DEF) tabanlı bir hücre ayrıştırma sistemi geliştirilmesidir. Bu iki aşamalı DEF sisteminin, ilk aşamada kanser ve normal doku hücrelerini boyut farklılıklarına göre, ikinci aşamada ise ÇİD geliştirmiş kanser hücrelerini diğer kanser hücrelerinden dielektrik özelliklerindeki farklılığa göre ayırması beklenmektedir. Proje süresince, simülasyon ve test sonuçlarına bağlı olarak her iki DEF alanı için 3 farklı nesil DEF çipi geliştirilmiştir. Projenin son aşamasında, son tasarımlar birleştirilerek iki aşamalı bir DEF çipi tasarımı yapılmış ve MEMS üretimleri gerçekleştirilmiş. Tasarımların testleri hassas ve dirençli MCF-7 meme kanseri ve K562 lösemi hücreleri ile gerçekleştirilmiştir. Kan hücrelerini K562 kanser hücrelerinden ayrıştırması planlanan birinci aşama DEF çipinin 1000 kat seyreltilmiş kırmızı kan hücresi (5x106 kan hücresi/ml) içinde 1x106 hücre/ml kanser hücresini ayrıştırabildiği gözlenmiştir. İkinci aşama DEF çipi ise 100 hassas kanser hücresi içinden 1 dirençli kanser hücresini ayrıştırabilecek hassasiyettedir. Proje kapsamında kullanılan hücrelerin hassas bir şekilde dielektrik karakterizasyonlarını yapabilecek özgün bir elektrorotasyon (ER) çipi geliştirilmiş ve farklı ilaç dirençlilik seviyesine sahip MCF-7 meme kanseri ve K562 lösemi hücrelerinin dielektrik özellikleri belirlenmiştir. Sonuç olarak, DEF yönteminin herhangi bir biyolojik işaretlemeye gerek duyulmaksızın hassas ve hızlı bir şekilde kanser ve kanserde ÇİD gelişimini tespit edebilecek bir platform olabileceği gösterilmiştir. Proje süresince elde edilen veriler, kanserde metastaz ve ÇİD gelişiminin erken tespitini sağlayabilecek MEMS-tabanlı bir çip-üstü-laboratuvar sisteminin geliştirilmesi için temel oluşturacak niteliktedir.Cancer has the 2nd rank in the mortality all over the world. 8.2 million people die due to cancer every year. Early diagnosis is one of the most crucial parameter in the cancer therapy. Metastasis and multidrug resistance (MDR) are the two reasons, causing to increase of death rate in cancer. Therefore, the observation of the metastasis and the development of MDR in cancer patient is crucial to determine the accurate therapy. However, there are not any method to detect metastasis and MDR in the clinic. The main objective of the proposed project is to develop a dielectrophoresis (DEP) based cell separation system (i) to detect cancer cells obtained from the suspected tissue, and also (ii) to separate the MDR cancer cells from non-resistant ones. The proposed two- stage DEP system is supposed to separate cancer cells from normal tissue cells due to their size differences at the first stage, and separate MDR cells from non-resistant ones due to differences in their dielectric properties at the second stage. Three generations were developed for both DEP stages based on the simulations and test results. At the last stage of the project, last generations were merged and two-stage DEP device was designed and fabricated. MDR and sensitive K562 and MCF7 cell lines were utilized in the tests of integrated DEP devices. At the first stage, K562 cancer cells (1x106cells/ml) were separated from blood cells (5x106cells/ml). The second DEP stage has the selectivity to detect one MDR cancer cell inside 100 sensitive ones. During the project, an electrorotation (ER) device was developed to characterize the cells dielectrically. The dielectric properties of MCF7 and K562 cells, having different drug resistance levels, were determined by utilizing ER devices. In conclusion, results prove that DEP can provide an efficient and rapid platform for the detection of cancer and MDR in cancer, in a label-free manner. These results form a basis for the development of a MEMS based lab-on-a-chip system to provide early diagnosis of metastasis and MDR in cancer

Planktonic and benthic foraminiferal biostratigraphy of the Middle Eocene–Lower Miocene successions from the Sivas Basin (Central Anatolia, Turkey)

Planktonic and benthic foraminifera are described from the Middle Eocene-Lower Miocene successions in the Sivas Basin, Central Anatolia. An integrated foraminiferal zonation provides new age assignments in terms of a great number of taxa for the studied sections. Four biostratigraphical intervals are first recorded based on the concurrent ranges of sporadically occurring but well preserved planktonic foraminiferal assemblages. The first interval characterized by the co-occurrences of Acarinina bullbrooki, Truncorotaloides topilensis and Turborotalia cerroazulensis is referable to the E11 Zone of late Lutetian–early Bartonian. An assemblage yielding Paragloborotalia opima accompanied by Globigerinella obesa forms a basis for the late Chattian O5 Zone. The successive interval corresponds to the late Chattian O6 Zone indicated by the presence of Globigerina ciperoensis and Globigerinoides primordius along with the absence of Paragloborotalia opima. The early Aquitanian M1 Zone can be tentatively defined based mainly on the assemblage of Globigerina, Globigerinella, Globoturborotalita and Tenuitella. The biostratigraphical data obtained from the benthic foraminifera assign the studied sections to the SBZ 21–22, SBZ 23 and SBZ 24 ranging in age from Rupelian to Aquitanian. The SBZ 23 and 24 are well constrained biozones by the occurrences of Miogypsinella complanata and Miogypsina gunteri, respectively, whereas the SBZ 21–22 defined by nummulitids and lepidocylinids in the Tethyan Shallow Benthic Zonation is characterized dominantly by peneroplids, soritids and miliolids in the studied sections. Benthic foraminiferal assemblages suggest different paleoenvironments covering lagoon, algal reef and shallow open marine whereas planktonic foraminifera provides evidence for relatively deep marine settings on the basis of assemblages characterized by a mixture of small-sized simple and more complex morphogroups indicative for intermediate depths of the water column

Modification of the extended messinger model for mixed phase icing and industrial applications with TAICE

© 2017, American Institute of Aeronautics and Astronautics Inc, AIAA. All rights reserved.Computational studies have been performed in order to predict mixed phase ice accretion on aircraft components. In-house developed TAICE tool has been used in this study. Previously, TAICE was already validated for icing cases due to water droplets only. In addition, in the framework of High Altitude Ice Crystals (HAIC) FP7 European project, mixed phase ice accretion prediction capability has been added to TAICE. Up to now, Turkish Aerospace Industries (TAI) has implemented models related to ice crystal accretion calculation. Drag coefficient prediction, heat transfer & phase change, impingement, erosion and accretion models are among these models. Moreover, extended Messinger model has been modified for mixed phase icing conditions and are used in this study. Validations of the generated tool have been performed before by using COX and NASA-NRC wind tunnel results. Numerical comparison results on representative pitot probe and engine inlet are given to show capability of the tool

In-Flight Mixed Phase Ice Accretion Prediction on Finite Wings with TAICE-3D

Mixed phase ice accretion prediction capability of the 3D version of TAICE is presented in this study. First, computational approach while performing numerical analyses is detailed. In this part, the effect of the number of panels used in the chordwise direction and the effect of number of time steps used in the multi-step analyses are discussed. Then, in-flight ice formation results on finite wings are given. COX and TUBS experimental results are used for ice shape comparisons on wing sections in order to validate the tool. Thus, the present study is an effort to extend the previous work on two-dimensional analysis to three dimensions and to predict ice shapes with the new tool

The Teachers\u27 metaphors about "creative thinking": Teachers\u27 metaphors about "creative thinking"

The aim of this study is the 21st century, which has an important place in the cognitive, emotional, academic and social development of students. The aim is to reveal the metaphors produced by teachers, who are in the position of gaining creative thinking, one of the learning and innovation skills, about creative thinking. The research was carried out with 10 teachers working in different types and levels of public schools in the Efeler district of Aydın province in the 2022-2023 academic year. In the study, in which the phenomenological approach, one of the qualitative research designs, was used, the participants were asked a question in the semi-structured "creative thinking metaphor interview form" prepared by the researchers and the data obtained were analyzed by content analysis. The metaphors produced by the teachers in the study group about creative thinking were grouped into four categories: "generating original ideas", "problem solving", "rethinking" and "creating an original product". &nbsp

Mixed phase ice accretion prediction with TAICE

© 2016, American Institute of Aeronautics and Astronautics Inc, AIAA.Mixed phase ice accretion prediction capability has been added to TAICE in the framework of High Altitude Ice Crystals (HAIC) FP7 European project. Up to now, Turkish Aerospace Industries (TAI) has implemented models related to ice crystal accretion calculation to the existing ice accumulation prediction program. Drag coefficient prediction, heat transfer & phase change, impingement, and accretion models are among these models. In this study, COX and NASA-National Research Council of Canada (NRC) experimental test conditions and results for mixed phase icing conditions have been used for validation purposes. Implemented model results including erosion effects are examined with these two experimental data sets