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Investigation of Real-Life Connections Used by Pre-service Mathematics Teacher in Teaching Numbers
Get PDFBu araştırmanın amacı, ortaokul matematik öğretmeni adaylarının sayıların öğretiminde kullandıkları gerçek hayat ilişkilendirmelerinin incelenmesidir. Bu amaçla, öğretmen adaylarının gerçek hayatla ilişkilendirmeyi nasıl yaptıkları, ilişkilendirme yaparken hangi bağlamları kullandıkları ve gerçek hayatla ilişkilendirme konusunda ne düşündükleri belirlenmiştir. Araştırmada nitel araştırma yöntemlerinden durum çalışması kullanılmıştır. Araştırmanın çalışma grubu bir devlet üniversitesinin ilköğretim matematik öğretmenliği programına devam eden öğretmen adaylarından oluşmaktadır. Veriler gerçek hayat ilişkilendirmelerine yönelik Gainsburg’un (2008) kodlar ve içerik analizi kullanılarak analiz edilmiştir. Araştırmanın bulgularına göre, öğretmen adayları genel olarak gerçek hayat ilişkilendirmelerinde sözel klasik problemleri ve alışveriş- ticaret bağlamlarını kullanmışlardır. Ayrıca öğretmen adaylarıyla yapılan görüşmeler sonucunda, öğretmen adaylarının sayılar konusunun gerçek hayatla ilişkilendirilerek öğretilmesi gerektiğini düşündükleri belirlenmiştir.The purpose of this research was to examine the real-life connections used by pre-service mathematics teachers during teaching numbers. For this purpose, it was determined how pre-service teachers made real life connections, which contexts they used and what they think about making connections between mathematics and real life. The case study method, a type of qualitative research, was used. The participants consisted of pre-service teachers who were enrolled in a teacher education program at a state university. The data were analyzed using Gainsburg's (2008) real-life connection categories and content analysis for real-life connections. According to the findings of the study, pre-service teachers generally used classic word problems and shopping-payment contexts to build real-life connections. As a result of the interviews, it was determined that the pre-service teachers thought that the subject of numbers and operations should be taught by connecting to real life
Investigation of electronic structure of a lithium atom confined by a finite spherical cavity
No full textIn this study, we have calculated the average energies of the ground and excited configurations of a lithium atom enclosed by a spherical potential well with finite barrier height, and we have also carried out calculations of orbital energies, confining potential energies and probabilities of finding the electrons in 1s and nl orbitals as a function of confinement radius for the 1s2nl configurations [nl = 2s, 2p, 3d and 4f]. Quantum Genetic Algorithm (QGA) and Hartree-Fock Roothaan (HFR) methods are used to calculate the energy eigenvalues and corresponding wave functions of the confined system. The results show that potential barrier height and confinement radius have a strong influence on the energies and the probabilities of finding the electrons inside and outside the well. It is found that 1s orbital energy increases suddenly at a critical confinement radius, at which the electron in nl orbital is trapped by the confining potential
Systemic immune inflammation index may be a new powerful marker for the accurate early prediction of complications in patients with acute appendicitis
Get PDFTo investigate the relationship between the systemic immune-inflammatory index (SII) and acute appendicitis (AA). Materials and Methods: We retrospectively evaluated patients aged over 18 years who were diagnosed with AA and underwent surgery at our clinic from January 1, 2019, through July 31, 2022. The patients were divided into three groups: complicated acute appendicitis (CAA), uncomplicated acute appendicitis (UAA), and control. The clinical and laboratory characteristics of the patients evaluated at the emergency department were recorded. The neutrophil/lymphocyte ratio (NLR), the platelet/lymphocyte ratio (PLR), and SII (neutrophil count x platelet count/lymphocyte count) were calculated.Results: The study included a total of 1,456 patients, of whom 628 had UAA, 104 had CAA, and 714 were controls. The NLR, PLR, and SII values were statistically significantly higher in the CAA group than in the control group and the UAA group. The multivariate logistic regression analysis revealed that SII was an independent predictor of CAA development (odds ratio [OR]: 4.65; 95% confidence interval [CI]: 2.31-10.17). The predictive power of SII in the prediction of CAA (area under the curve [AUC]: 0.809) was much higher than that of NLR (AUC: 0.729), neutrophil count (AUC: 0.696), and C -reactive protein (AUC: 0.732) alone. It was determined that an SII value greater than 1,989.2 had a sensitivity of 78.4% and a specificity of 88.5% in predicting CAA development.Conclusion: SII is a simple, inexpensive, and promising marker that could predict both the diagnosis and severity of appendicitis
Protective effects of zingerone against sodium arsenite-induced lung toxicity: A multi-biomarker approach
No full textSodium arsenite (SA) exposure is toxic to the body. Zingerone (ZNG) is a flavonoid with many biological properties found naturally in honey and plants. This study aimed to determine the effects of ZNG on SA-induced rat lung toxicity. Materials and Methods: Thirty-five male Sprague rats were divided into Control, SA, ZNG, SA+ZNG25, and SA+ZNG50 groups (n=7). SA 10 mg/kg and ZNG were administered at two doses (25 and 50 mg/kg) (orally, 14 days). Analysis of oxidative stress, inflammation damage, apoptosis damage, and autophagic damage markers in lung tissue were determined by biochemical and histological methods. Results: The administration of ZNG reduced oxidative stress by increasing SA-induced decreased antioxidant enzyme activities, increasing Nrf-2, HO-1, and NQO1, and decreasing MDA level. ZNG administration reduced inflammation marker levels. Anti-apoptotic Bcl-2 increased and apoptotic Bax and Caspase-3 decreased with ZNG. ZNG promoted the regression of autophagy by reducing Beclin-1, LC3A, and LC3B levels. Conclusion: Evaluating all data showed that SA caused toxic damage to lung tissue by increasing inflammation, apoptosis, autophagy, and oxidant levels, whereas ZNG had a protective effect by reducing this damage
When time matters: Mechanisms of change in a mediational model of foreign language playfulness and L2 learners’ emotions using latent change score mediation models
Get PDFIn a dynamic system, time-dependent links between affective factors can provide more information than the level of response within a single isolated sys-tem. In the present study, influenced by the positive psychology movement and the complex dynamic systems theory in the domain of second language acquisition, first, we dealt with change in terms of short-term dynamics and long-term trajectories of foreign language enjoyment (FLE), foreign language boredom (FLB), and foreign language playfulness (FLP) in a sample of 636 learners of English as a foreign language (EFL) using univariant latent change score (LCS) models. Then, we explored the developmental processes involved in how changes in FLE and FLP were associated with changes in FLB. In partic-ular, we tested mediation models to see whether the growth of FLP acts as a mediator between FLE and FLB changes in a multivariant LCS mediation (LCSM) model. The findings showed that (a) in a multivariant LCS model, FLE and FLP increases independently predicted decreases in FLB over time and (b) the growth of FLP acted as a mediator between variation in FLE and FLB. Par-ticipants showed interindividual and intraindividual divergences in their L2 emotions, not just on the first time of measurement, but also in short-term dynamics and long-term trajectories. The findings facilitate understanding of the complicated mechanism of variation in L2 emotions, thus potentially con-tributing to enhancement of pedagogical practices and learning outcomes
Exploring the relationship between pre-service teachers’ TPACK and blended teaching readiness levels: a path analysis
No full textThis study explored pre-service teachers’ technological pedagogical content knowledge levels and their blended teaching readiness. In this context, the study employed the cross-sectional survey design, and the variables were analyzed descriptively and correlationally. The study was carried out with the participation of 477 pre-service teachers. Data were collected using the Blended Teaching Readiness Instrument and the Technological Pedagogical Content Knowledge-Deep (TPACK deep) Scale. The analyses put forth that pre-service teachers technological pedagogical content knowledge levels were high in the dimensions of design, exertion, and proficiency, whereas their levels were moderate in the dimension of ethics. In addition, pre-service teachers’ blended teaching readiness levels were found to be high in the dimensions of dispositions, online integration, data practices, personalizing instruction, and online interaction. Furthermore, a significant and positive high-level correlation was revealed between pre-service teachers’ technological pedagogical content knowledge levels and their blended teaching readiness. Also, pre-service teachers’ technological pedagogical content knowledge levels could explain 66% of the variance in their blended teaching readiness
Reduction of 2-H-substituted pyrrolinium cations: the carbon-carbon single bond in air stable 2,2′-bipyrrolidines as a two-electron-source
No full textReduction of 2-H-substituted pyrrolinium cations via initially formed secondary radicals results in either dimerisation or H-abstracted products, while the outcome depends on the N-substituents. The resultant central carbon-carbon single bond in the dimerised 2,2′-bipyrrolidine derivatives can be oxidised chemically and electrochemically. The notably air and moisture-stable dimers were subsequently utilised as a source of two electrons in various chemical transformations
Teaching Developmentally Appropriate Warm-Up Drills in Physical Education
Get PDFThe warm-up is the most important part of the physical education classes, where the student’s interest and attention are drawn and motivated towards the lesson purpose. However, many physical education teachers do not give enough attention to the beginning and warm-up part of the lesson when planning their lessons. Faigenbaum & McFarland (2007) stated that warm-up activities help prepare students for dynamic activities and increase their lesson time with physical activity. Warm-up in physical education classes is a part that should emphasize, primarily since it constitutes a basis for the main phase. Therefore, the purpose of this article is to provide some developmentally appropriate warm-up examples to increase the quality of the physical education lesson
Is there a relationship between systemic immune-inflammatory indices and asthma?
Get PDFImmune inflammatory response plays an important role in patients with asthma. The goal of the current study is to determine whether pan-immune inflammation value (PIV) and systemic inflammatory response index (SIRI) are effective in predicting asthma.Material and Methods: This retrospective study included 55 patients and 55 healthy controls followed in the Allergy and Immunology Clinics of Ordu University Training and Research Hospital.Results: Neutrophil, Monocyte, MPV and PDW were statistically significant between the groups (p0.05).Discussion: We concluded that SIRI and PIV could be novel and cost-effective inflammatory indices in patients with asthma
Craniometric comparisons of the skull of male and female Malaklı Dogs usıng 3-dimensional imaging: a computed tomography (ct) study
No full textThe skull is an important anatomical structure to discern dog breeds and wolves from dogs. For this purpose, skull morphology and some morphometric measurements of Malakli dogs, a local breed in the Aksaray region, were examined. Thirty-one distances were measured, and the skulls, which were computerized tomography, were converted into three-dimensional (3D) images in fourteen skulls (7 male-7 and female) of adult dogs. Different morphological features and statistical findings that were not revealed by taking measurements from 30 distinct anatomical points of Aksaray Malakli dog skull bones were determined in accordance with the literature. It was determined that males were greatest than females in most of the osteometric measurements as well as in surface area and volume measurements. Through examination of the cranial morphometric characteristics and 3D images of Aksaray Malakli dogs, the results of this study demonstrated differences between the sexes. In addition to showing some similarities to the cranial structure of several carnivores, there are also some different anatomic characteristics