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Navigating complexity: a multifaceted approach to teaching climate change in middle school
Get PDFGlobal climate change is one of the most significant challenges of the twenty first century, requiring its integration into K-12 science education curricula to foster informed and climate-literate citizens. However, challenges remain in effectively teaching climate change, including a lack of instructional materials and a reliance on traditional teaching methods that limit student engagement and understanding. To address these challenges, this study developed a unit that combines socioscientific issue-based instruction, scientific modeling, and systems thinking to improve climate education. The unit was implemented by a teacher trained in the Socioscientific Issues and Model-based Learning (SIMBL) framework and showed promising results. Students demonstrated an improved understanding of climate complexity, as evidenced by the inclusion of multiple factors in their system maps and the justification of policy decisions based on their knowledge. In addition, the integration of media literacy tools improved students' critical engagement with online content. Overall, the SIMBL unit facilitated transformative learning experiences that empowered students to understand and address the multifaceted challenges of climate change. The study suggests implications for teachers and advocates for adapting the sequence to various standards and socioscientific topics beyond climate change.Yildiz Technical University Scientific Research [SDK-2021-4626]This study was produced based on the first author's PhD dissertation supported by Yildiz Technical University Scientific Research Projects Coordination Unit with the project number SDK-2021-462
Bibliometric Analysis Studies of Published in the Field of Volatility
Get PDFVolatility, used to determine the risk structure of financial markets or instruments, is one of the most used methods by researchers. In this study which is conducted to reveal the tag of volatility studies, 15,132 articles related to volatility between 1980 and 2023, scanned in the Web of Science database, were subjected to bibliometric analysis. As a consequence of the investigation, the details of the subject, such as the country with the highest number of publications, institutions, the most cited authors, articles, leading journals and keywords in the field, were revealed. As a consequence, it was determined that the authors worked on three basic subjects such as stocks and stock markets, exchange rates and macroeconomic indicators on volatility. It has been observed that the main objectives of the studies are either to compare the performance of existing volatility estimation models or to develop new models by adding new variables.Table 5: First Largest Cluster The Most Fundemental Authors TableTable 5: First Largest Cluster The Most Fundemental Authors Tabl
Interconnectedness and systemic risk: Evidence from global stock markets
Get PDFThe study aims to examine systemically important stock markets in the global financial system within the scope of portfolio theory. For this purpose, we use daily stock market indices from 46 countries (23 developed and 23 developing stock markets) in North America, Latin America, the Middle East and Africa, Asia, the Pacific, Eastern Europe, and Europe between 1995 and 2021. Based on the Component Expected Shortfall (CES), we identify systemically important stock markets and use the quantile spillover analysis to examine the financial contagion and directional spillovers emanating from downside risks among stock markets. Overall, we observe stock markets of developed countries figured prominently in terms of systemic risk until the Global Financial Crisis (2007-2009; henceforth GFC), while developing country stock markets particularly those of China and India gained traction after the GFC. Moreover, we observe a shift in terms of systemic risk in recent years from the West to the East geographically. To increase global financial market resilience and improve stability, supervision, and macroprudential policies can be formulated to limit risk spillovers in global stock markets. Additionally, it is critical to diversify investments outside equity markets, such as currency, bond, gold, and oil asset classes. When considering overseas portfolio choices for diversity, investors should keep the financial spillover effects in mind
The effect of outer container geometry on the thermal management of lithium-ion batteries with a combination of phase change material and metal foam
Get PDFThe use of PCM for thermal management of the batteries has an important place among passive cooling methods because it does not require pump or fan power. In battery cooling applications with PCM, it was aimed to increase the thermal conductivity of the PCM and to cool the battery better by using fins, nanoparticles, and metal foam. The novelty of this study is to investigate the effect of outer container geometry on battery temperature in battery cooling with PCM + metal foam composition. In this direction, five different container geometries affecting the heat transfer by conduction and convection were analyzed. The parametric study was carried out for different values of convection heat transfer coefficient, heat generation in the battery, PCM amount, and porosity. The lowest battery temperature for a given discharge time was obtained in triangular container geometry. With the use of a triangular container, the battery temperature was reduced between 0.4 % and 14.42 % compared to the use of a circular container, depending on the parameter values. The analysis findings revealed that the outer container geometry is more effective in the thermal management of the battery for conditions with low convection heat transfer coefficient and high heat generation
The contribution of master's theses in the field of education to practice in the national education system
Get PDFBu araştırma, tezli yüksek lisans eğitimlerini tamamlamış öğretmen ve okul müdürlerinin hazırladıkları eğitim alanındaki yüksek lisans tezlerinin, öğretmen ve okul müdürleri ile paylaşılmasını ve böylelikle uygulamaya katkı durumunu anlamayı amaçlayan nitel bir durum çalışmadır. Düzce'de resmi orta okullarda görev yapan, 2002-2022 yılları arasında tezli yüksek lisans mezunu olan 170 öğretmen ve okul müdürü arasından, ölçüt örneklem yöntemi ile seçilen, sekiz öğretmen ve iki okul müdürü tezlerini öğretmen ve okul müdürlerine sunu yaparak paylaşmıştır. 2022-2023 eğitim-öğretim yılında resmi ortaokullarda görev yapan Türkçe, fen bilimleri, matematik öğretmenleri ve okul müdürleri, İl Milli Eğitim Müdürlüğü ile yapılan iş birliği çerçevesinde tez sunumuna davet edilmiştir. Veriler, tez sunumlarına katılan ve maksimum çeşitlilik örneklem yöntemiyle belirlenen 20 katılımcıdan açık uçlu soruların yer aldığı yarı yapılandırılmış görüşme formu aracılığıyla yüz yüze görüşülerek toplanmıştır. Araştırma soruları, kavramsal çerçeve dikkate alınarak uzman öğretim üyesinin önerileri doğrultusunda, araştırma problemine uygun olarak hazırlanmış dört sorudan oluşmaktadır. Görüşmelerden elde edilen veriler, içerik analizine tabi tutularak ulaşılan kodlar temalar altında toplanmıştır. Araştırma soruları kapsamında elde edilen veriler ışığında, tez sunumlarından öğretmen ve okul müdürlerinde motivasyon, tutum gelişimi ve uygulama yönelik beklentilerin oluştuğu; tez sunumlarının öğretmenlerin ders işleme anlayışı ve ders sürecine, okul müdürlerinin yönetim anlayışı ve yönetim süreçlerine katkısı olduğu; öğretmenler uygulama ve durum tespiti ile ilgili, okul müdürleri ise eğitim öğretim alanı ve denetim alanlarında tez çalışması yapılmasını istediklerine ilişkin sonuçlara ulaşılmıştır. Ayrıca öğretmen ve okul müdürleri yüksek lisans tezlerinin uygulayıcılar ile buluşamamasının katılımcılardan, tezlerden, üniversitelerden ve MEB'den kaynaklı nedenleri olduğunu belirtmişlerdir. Bu çalışmadan çıkarılan sonuçlar doğrultusunda yüksek lisans tezlerinin uygulamaya katkı sağlamasına ve bu durumun önündeki engellerin kaldırılması yönelik kurumlara, uygulayıcılara ve araştırmacılara önerilerde bulunulmuştur.This research is a qualitative case study that aims to share the master's theses in the field of education, prepared by teachers and school principals who have completed their master's degree with thesis, with teachers and school principals, and thus to understand their contribution to practice. Among 170 teachers and school principals who worked in public secondary schools in Düzce and graduated with a master's degree with a thesis between 2002 and 2022, eight teachers and two school principals, selected by the criterion sampling method, shared their theses by making a presentation to the teachers and school principals. Turkish, science, mathematics teachers and school principals working in public secondary schools in the 2022-2023 academic year were invited to the thesis presentation within the framework of the cooperation with the Provincial Directorate of National Education. The data was collected face to face through a semi-structured interview form containing open-ended questions from 20 participants who participated in thesis presentations and were determined by the maximum diversity sampling method. The research questions consist of four questions prepared in accordance with the research problem, taking into account the conceptual framework and in line with the recommendations of the expert faculty member. The data obtained from the interviews were collected under codes and themes obtained by subjecting them to content analysis. In the light of the data obtained within the scope of the research questions, it is seen that teachers and school principals have expectations regarding motivation, attitude development and practice from the thesis presentations; Thesis presentations contribute to teachers' understanding and course process, and to school principals' management approach and management processes; It was concluded that teachers wanted thesis studies to be carried out in the fields of practice and due diligence, while school principals wanted thesis studies to be carried out in the field of education and supervision. In addition, teachers and school principals stated that the reasons why master's theses could not meet with practitioners were due to the participants, the theses, universities and the Ministry of Education. In line with the results obtained from this study, suggestions were made to institutions, practitioners and researchers to ensure that master's theses contribute to practice and to remove the obstacles to this situation
How to Provide Patient Safety in the Emergency Department? A Qualitative Study Emergency Nurses’ Experiences
Get PDFAmaç: Bu çalışmada, acil servis hemşirelerinin hasta güvenliğine ilişkin deneyimlerinin açıklanması amaçlanmıştır. Yöntem: Niteliksel desendeki bu çalışma, bir üniversite hastanesinin acil servisinde Aralık 2022-Mart 2023 tarihleri arasında yürütülmüştür. Çalışmada 14 acil servis hemşiresinden oluşan amaçlı bir örneklem ile derinlemesine görüşmeler yapılmıştır. Veriler, tematik analiz yöntemi kullanılarak analiz edilmiştir. Bulgular: Katılımcıların %50’si erkek olup yaşları 25 ile 40 arasında değişmektedir (ortalama 32,2, SS=5,99). Verilerin analizi sonucunda iki tema ve üç alt tema belirlenmiştir: (I) Acil servise özgü sorunlar (II) Acil serviste hasta güvenliğini etkileyen etmenler. Sonuç: Hemşireler, hasta güvenliği konusunda sıklıkla bireysel ve anlık önlemler aldıklarını belirtmişlerdir. Ancak bireysel önlemlerden çok kurumsal bir hasta güvenliği kültürü oluşturmaya yönelik stratejilere ve planlamalara gereksinim duyulmaktadır. Bununla birlikte, hasta güvenliğine ilişkin yöneticilerin proaktif bir yaklaşım benimsemeleri ve hemşireler için destekleyici bir ortam yaratmaları önerilmektedir
Comparison of the effectiveness of project-based 6E learning and problem-based quantum learning: Solomon four-group design
Get PDFPurpose: Researchers have previously utilized the project-based 6E learning model and the problem-based quantum learning model in various courses, such as the instructional principles and methods course and the character and values education course. These models were evaluated for their impact on students in different subjects, including developing skills, values, democracy perceptions, attitudes towards cooperative learning, metacognitive thinking skills and teacher self-efficacy perceptions. In 2023, Ökmen, Sahin and Kiliç reported positive outcomes, while Sahin and Kiliç reported similar findings in 2023a, 2023b and 2023c. There has been no investigation into how the models affect students' critical thinking and academic literacy. This study seeks to determine the impact of both models on these skills, gain more insight into their effectiveness and determine which is more beneficial. The results will guide the decision-making process for the character and values education course and other courses in the future. Specifically, this research aims to compare the effects of the project-based 6E learning model and problem-based quantum learning model on critical thinking and academic literacy. Design/methodology/approach: This research employed the Solomon four-group experimental design to assess the efficacy of the applications. Prior knowledge and experience of the participants were evaluated through pretests. However, it should be noted that pretests may impact posttest scores either positively or negatively. For instance, participants taking the test multiple times may become more interested or attentive to the subject matter. The Solomon four-group design was deemed appropriate to analyze the influence of pretesting. This design enables the investigation of the application effect, pretest effect and interactive effect of pretest and application (van Engelenburg, 1999). Findings: It was concluded that the project-based 6E learning model was effective in developing critical thinking in students, but not significantly. It was concluded that the problem-based quantum learning model significantly improved students' critical thinking skills. It was concluded at the end of the study that the project-based 6E learning model notably enhanced students' academic literacy. It was concluded that the problem-based quantum learning model had a significant positive impact on students' academic literacy. According to research, it has been determined that the problem-based quantum learning model is superior in enhancing critical thinking abilities compared to the project-based 6E learning model. Nevertheless, there seems to be no detectable disparity in the academic literacy advancement of pupils between the problem-based quantum learning model and the project-based 6E learning model. Originality/value: There has been no investigation into how the models affect students' critical thinking and academic literacy. This study seeks to determine the impact of both models on these skills, gain more insight into their effectiveness and determine which is more beneficial. The results will guide the decision-making process for the character and values education course and other courses in the future. © 2024, Şeyma Şahin and Abdurrahman Kılıç
İsrail’in “Yerleşimci” Politikası ve Filistin’e Yansımaları: Gazze Saldırıları
Get PDFFilistin ile İsrail ve Arap dünyası arasındaki çatışmalar, bölgesel güç dengesi, çatışma ve işbirliklerini etkilemekle kalmamakta, halklar düzeyindeki uluslararası toplumun Batılı güçlere ve İsrail’e yönelik eleştirel tutumlarına da kaynaklık etmektedir. İsrail’in Filistin’e yönelik izlediği bir dizi kilometre taşı niteliğindeki politikalardan birini yerleşimci politikası oluşturmaktadır. Bu politika, Filistin topraklarının aidiyetini değiştirmeyi hedeflemektedir. Bunun için bölgedeki Filistin nüfusunu azaltma, Yahudi nüfusunu artırma stratejisi izlenmektedir. Yerleşimci politikası aynı zamanda İsrail’in işgal ve ilhak politikasının da bir uzantısı ve destekçisidir. Bu nedenle çalışmada yerleşimci politikasının nedenlerine ve en nihayetinde bunun Filistin’e yönelik sonuçlarına odaklanılmıştır. Çalışmanın hedeflenen amacına ulaşabilmesi için özel olarak Gazze saldırıları incelenmiş olup, yerleşimci politikasının İsrail Filistin sorununu derinleştirdiği, bunun çatışmaları artırdığı, aynı zamanda Filistin ve Ortadoğu genelinde telafi edilemez insani, politik ve ekonomik etkiler doğurduğu sonucuna ulaşılmıştır. Yerleşimci politikası, İsrail’in güç ve güvenlik odaklı politikasını tescillemekte, uluslararası toplumu dikkate almayan tutumunu teyit etmektedir. İsrail’in uluslararası hukuka aykırı yerleşimci politikası ekonomik, insani ve politik çok boyutlu sonuçlar doğurmaktadır. Filistinliler askeri yöntemler kullanılarak evlerinden zorla çıkarılmakta, tarım arazilerinden, bağ bahçe ve yurtlarından edilmektedir. Yurtdışından getirilen Yahudi yerleşimciler zaman zaman bizzat, zaman zaman da polis ve asker destekli saldırılar düzenleyerek Filistinlilerin can ve mal güvenliğini ortadan kaldırmaktadır. İnsani, hukuki ve sosyo politik açıdan kabul edilemez bir olgu olan yerleşimciler, izledikleri tutumlar sonucunda işgalciye dönüşmüşlerdir. Gazze saldırıları da İsrail’in işgalciye dönüşen yerleşimci politikasının somut bir örneğidir. Gazze saldırıları ile İsrail, işgal ve ilhak politikalarını sürdürmeye devam etmekte, Filistin’e yönelik saldırgan politikaları nedeniyle de Filistin ve/veya İsrail taraftarlarını konsolide etmektedir
Incidentally detected asymptomatic splenic artery aneurysm
Get PDFSplenic artery aneurysm (SpAA) is the most common among visceral artery aneurysms and accounts for approximately 60% of visceral artery aneurysms. Generally, 80% of cases with SpAA are asymptomatic. The most common symptoms are abdominal pain, nausea and intra-abdominal bleeding due to aneurysm rupture, hypotension and hemorrhagic shock. The most serious complication is aneurysm rupture and related complications. The most useful method for diagnosis is abdominal CT angiographic imaging. The treatment is mostly surgical, but in appropriate cases, endovascular intervention can also be applied. Medical follow-up can be performed in true splenic artery aneurysms less than 2 cm in diameter. In this article, we wanted to present a fifty-two-year-old female patient with an asymptomatic splenic artery aneurysm that was detected incidentally. © 2024, Turkish National Vascular and Endovascular Surgery Society. All rights reserved
Determination of Cellulase Enzyme Produced by Bacillus cereus DU-1 Isolated from Soil, and Its Effects on Cotton Fiber
Get PDFA Cellulase enzyme is the enzyme synthesized by some bacterial and fungal species and breaks down the ss-1,4 glycoside bonds of cellulose. Cellulase enzyme has a wide range of uses such as food, paper, textile industry, animal feed and detergent production. In this study, which was designed to add a new cellulase enzyme with such a wide industrial use, cellulotic bacterium isolation, identification, partial purification, characterization and application on denim fabric of the cellulase enzyme synthesized by the identified bacterium was performed. Firstly, bacterium that can produce cellulase enzyme was isolated from soil samples containing hazelnut wastes. The enzyme-producing isolate was identified as Bacillus cereus strain DU -1 by morphological, biochemical and molecular techniques. The optimum conditions for enzyme production by B. cereus DU -1 was determined as pH 7.0, at 37 degrees C and 24h. However, the activity of the enzyme (5.16 U/mL) was found to be optimum at 50 degrees C and pH 6.0. The Vmax value of the enzyme was 3.18 U/mL and the Km value was 0.0019 mM. The enzyme was partially purified by ammonium sulfate precipitation. The molecular size of the partially purified enzyme was determined as approximately 40 kDa by SDS-PAGE and Zymogram analysis. Finally, enzyme was applied on the denim fabric and when the fabrics were viewed under the electron microscope, it was seen that they were suitable for textile use.[DU.BAP-2021.05.01.1150]This study was supported by the Scientific Research Project numbered DU.BAP-2021.05.01.1150