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Integrating artificial intelligence with numerical simulations of Cattaneo-Christov heat flux on thermosolutal convection of nano-enhanced phase change materials in Bézier-annulus
No full textThe numerical analysis based on incompressible smoothed particle hydrodynamics (ISPH) is introduced to examine the impacts of Cattaneo-Christov (Ca-Ch) heat flux and exothermic chemical reaction on thermosolutal convection of nano-enhanced phase change materials (NEPCM) in Bézier-annulus. The used annulus is formed between inner connected Bézier curves and outer connected spline-Bézier curves. The inner shape of connected Bézier curves is maintained at Th&Ch, left/right walls of spline-Bézier curves are kept at Tc&Cc and other walls are adiabatic. The governing equations, after being converted into non-dimensional form, have been solved by ISPH which is an accurate meshless algorithm the treatment of internal flows inside complex geometries. The simulations are executed for Frank-Kamenetskii number FK, Ca-Ch heat flux ?C, buoyancy ratio parameter N, Soret-Dufour numbers SrDu, Rayleigh number Ra, and nanoparticle parameter ? on thermosolutal convection of a suspension fluid. From the numerical simulation values for the average Nusselt and Sherwood numbers (Nu¯, Sh¯) were obtained for some fluid flow scenarios. Then, based on those values an artificial neural network (ANN) model was developed to predict the values of Nu¯, and Sh¯ without the need to perform the ordinary simulations again for the new cases which is a high cost compared to ANN. From the obtained simulations, it was concluded that the ANN model is an accurate tool to be used to predict the needed values. Also, the Frank-Kamenetskii number significantly influences the enhancement process of the temperature distributions and velocity field as well as phase change material in Bézier-annulus
Generation Z teachers’ reflective thinking skills
Get PDFThousands of teachers join the profession every year and meet a generation that challenges the system. This study aims to examine teachers’ reflective thinking skills in the face of Generation Z. A phenomenology design was used in the study, which was designed was used in the study designed according to the qualitative model. Semi-structured interview questions were asked to the study group of 22 teachers working in Istanbul. The thematic structure determination form developed within the scope of the research was used as a data collection tool, and the data obtained were subjected to content analysis in the MAXQDA 2022 program. The findings revealed that Generation Z forces teachers to exhibit reflective thinking skills in the classroom and in the teaching-learning process. It is possible to say that the new generation is a driving force for teachers to develop this skill. This situation is thought to be due to “the characteristics of the generation individuals” and “the theoretical education received at the university is weak on teachers’ reflective thinking skills in practice”. The study’s results support the view that today’s teachers are students of the new generation. At the end of the research, some suggestions were made.Her yıl binlerce öğretmen mesleğe katılıyor ve sisteme meydan okuyan bir kuşakla tanışıyor. Bu çalışma, Z kuşağı karşısında öğretmenlerin yansıtıcı düşünme becerilerini incelemeyi amaçlamaktadır. Nitel modele göre tasarlanan çalışmada fenomenoloji deseni kullanılmıştır. İstanbul’da görev yapan 22 öğretmenden oluşan çalışma grubuna yarı yapılandırılmış görüşme soruları yöneltilmiştir. Araştırma kapsamında geliştirilen tematik yapı belirleme formu veri toplama aracı olarak kullanılmış, elde edilen veriler MAXQDA 2022 programında içerik analizine tabi tutulmuştur. Bulgular, Z kuşağının öğretmenleri sınıf içinde ve öğretme-öğrenme sürecinde yansıtıcı düşünme becerileri sergilemeye zorladığını ortaya koymuştur. Yeni neslin öğretmenlerin bu beceriyi geliştirmeleri için itici bir güç olduğunu söylemek mümkündür. Bu durumun “kuşak bireylerinin özelliklerinden” ve “üniversitede alınan teorik eğitimin öğretmenlerin uygulamada yansıtıcı düşünme becerileri üzerinde zayıf kalmasından” kaynaklandığı düşünülmektedir. Araştırmanın sonuçları, günümüz öğretmenlerinin yeni neslin öğrencileri olduğu görüşünü desteklemektedir. Araştırma sonunda bazı önerilerde bulunulmuştur
Güney Kore'de ekonomik diplomasi'nin etkisi: soğuk savaş sonrası dönemde Asya-Pasifik bölgesine bir bakış açısı
No full textWith the Korean War between 1950 and 1953, the Peninsula got divided into two and furthermore, millions of people were killed during the war and half of the infrastructure was totally destroyed. President Park realized that the only way to compensate was to put aside the outdated Import Substitution Industrialization Model and implement the Export-Oriented Industrialization Model instead. Despite the obstacles, South Korea has become the agile-growing economy in the world with extraordinary economic achievements, even once one of the poorest countries. This study will argue that countries in the Asia-Pacific region act rationally, meaning they act in line with their economic interests and reflect upon their relative economic power that economic diplomacy relates to while conducting their economic relations, and they take positions relative to each other without considering them as "old enemies" or "new friends". Regional integration is preferred over the international and supranational organizations that have emerged through globalization or multilateral cooperation.Kore Savaşı (1950-1953) yaşandığında Yarımada ikiye bölünmüş, bunun sonucunda milyonlarca insan ölmüş ve altyapının yarısı yok olmuştur. Başkan Park, durumu telafi etmenin tek yolunun eski İthalat İkame Endüstrileşme Modelini bir kenara bırakıp bunun yerine İhracat Odaklı Endüstrileşme Modelini uygulamak olduğunu fark etmiştir. Türlü engellere rağmen, Güney Kore bir zamanların en fakir ülkelerden biri olmasına rağmen, olağanüstü ekonomik başarılara imza atarak dünyanın en hızlı büyüyen ekonomisi haline gelmeyi başarmıştır. Bu çalışmada, Asya-Pasifik bölgesindeki ülkelerin ekonomik çıkarları ve göreceli ekonomik güçleri doğrultusunda rasyonel bir şekilde birbirleri ile ekonomik ilişkiler kurduklarını ve birbirlerini "eski düşman" veya "yeni dost" olarak görmeden pozisyon aldıkları savunulacaktır
Weighted hardy type inequalities with Robin boundary conditions
No full textIn this paper, we establish a general weighted Hardy type inequality for the p?Laplace operator with Robin boundary condition. We provide various concrete examples to illustrate our results for different weights. Furthermore, we present some Heisenberg-Pauli-Weyl type inequalities with boundary terms on balls centred at the origin with radius R in R
Revealing the Leadership Characteristics of the Modern Age: Generation-Z Perspective
No full textOver time, the increasing modernization of enterprises and the coexistence of different
generations in business life have changed perceptions about leadership as well as
management and managerial issues. As a result, the characteristics that a successful leader
should have on have also developed. The aim of this study is to determine the
characteristics that a leader should have from the perspectives of Generation Z and to
reveal their differences from the traditional leadership approach. For this purpose, 183
participants of Generation Z over the age of 18 were interviewed and asked to indicate
the characteristics they expect in a leader. As a result of the content analysis made by
coding the answers received, the leader characteristics that the participants considered
important were determined. Accordingly, it has become clear that the characteristics of
foresight, management ability, ability to take responsibility of mistakes, caring about
privacy, awareness, fairness, being able to act like a teammate, having digital skills, being
able to discover talents, emotional intelligence, and strong communication skills should
exist primarily in a leader for generation Z. Considering that generation Z is gradually
participating in business life, revealing the changes in leadership skills in this direction
reflects the importance of the study
The research proposal to explore the effect of characteristics of independent board members on performance of companies
No full textThis study presents a research proposal to explore the effect of characteristics of independent board members on performance of companies. Dimensions of characteristics of independent board members are gender, age, education, tenure in the company, tenure in the career, functional work experience, foreign work experience, committee memberships, and duties. On the other hand, dimensions of performance of companies are financial performance, marketing performance and innovation performance. Ratio of foreign ownership, sectors, product/service categories, operated countries, and expansion methods into foreign countries (exporting, licencing, joint venture, merger, acquisition, and foreign direct investment) reflect the current positions of the companies. Also, size of the company, headquarter location of the company, size of the board of directors, number of board meetings, number of independent board members, responsibilities of board members (SWOT analysis, strategy formulation, strategy implementation, control, and leadership), board committees and their functions, performance appraisal methods and frequencies of the board and board members, and problems of independent board members could be asked to the participants. As a research methodology, structured in-depth interview could be conducted to the participants. The participants of the research could be independent board members of companies which sell their stocks in Star Market of Istanbul Stock Exchange Market (ISEM). Thus, the main population of the research could be independent board members of companies which sell their stocks in Star Market of ISEM whereas the sample of this research could be at least 7 participants who are independent board members of these companies
NFT'lerin bilinirliği üzerine ampirik bir çalışma
Get PDFFinans Enstitüsü, Finans ve Bankacılık Ana Bilim Dalı, Finans ve Bankacılık Bilim DalıDünya 2000'li yılların başından itibaren çok hızlı bir teknolojik değişim yaşamaya başlamıştır. Bu değişim hayatın tüm birimlerine hızlıca nüfus etmiş olup cep telefonları, bilgisayarlar, robotlar ve para kavramı, vb. konuda bir sürü yeniliği hayatımıza sokmuştur. En önemli değişimlerden bir tanesi de finans sektöründe yaşanmaktadır. Yüzyıllar boyunca gerek altın gerek kâğıt para olarak fiziki varlığını devam ettirmiş olan para olgusu teknolojik değişimle birlikte yerini dijital paralara bırakmıştır. Dijital paralar aracılığı ile işlemler çok daha hızlı ve etkili bir şekilde gerçekleştirilmektedir. Ancak, bu değişim beraberinde yeni ürünlerin, terimlerin hayatımıza girmesini sağlamıştır. Söz konusu yeniliklerin en önemlisi blokzincir yani merkeziyetsiz yapının hayatımıza girmiş olmasıdır. Eş zamanlı olarak hayatımıza NFT, fikri tapu da hayatımıza girmiştir. Her ne kadar dünya çok hızlı bir şekilde değişiyor olsa da toplumun bu değişime ayak uydurması veya değişikliklerin günlük hayata entegre edilmesi zaman almaktadır. Söz konusu araştırmada katılımcılara, NFT bilgileri, hiç NFT ürünü satın alıp almadıkları veya gelecekte NFT' ye yönelik sigorta ürünü alıp almayacaklarına yönelik sorular sorulmuş olup, Ki-Kare testi ile katılımcıların söz konusu sorular açısından cinsiyet, yaş, eğitim ve gelir düzeyi açısından anlamlı bir farklılık olup olmadığı anlaşılmaya çalışılmıştır.The world has started to experience a very rapid technological change since the beginning of the 20's. This change has quickly penetrated all units of life and has brought a lot of innovations intermes of mobile phones, computers, robots and the concept of money, etc. One of the most important changes has occured in the finance sector. For centuries, the phenomenon of money, which has continued its physical existence as both gold and paper, has left its place to digital currencies under favor of technological changes. Thanks to digital currency, we are all able to handle financial transactions faster. However, due to the this change many new terms have entered our lifes. The most important of these innovations is that the blockchain, its the decentralized structure, has entered our lives. At the same time NFT entered our life. Although the world is changing very rapidly, it takes time for the society to keep up with this change or to integrate the changes into daily life. In this research, the participants were asked questions about their NFT information, whether they have ever purchased NFT products or whether they will purchase insurance products for NFT in the future, and the Chi-Square test was used to understand whether there is a significant difference in terms of gender, age, education and income level of the participants regarding these questions
An analysis of the Turkey-US strategic partnership from the Gulf War to the year 2000 within the context of defensive realism
Get PDFSosyal Bilimler Enstitüsü, Siyaset Bilimi ve Uluslararası İlişkiler Ana Bilim Dalı, Siyaset Bilimi ve Uluslararası İlişkiler Bilim DalıUluslararası İlişkiler disiplinindeki geleneksel yaklaşımlardan Klasik Realizmin sistemdeki değişiklikler bağlamında yeniden yorumlanmasıyla ortaya çıkan Neorealizm kapsamındaki Savunmacı Realizm, teorik olarak güç dengesi yerine savunma dengesini öne çıkarmaktadır. 1990'lı yılların başından itibaren uluslararası sistemin yaşamış olduğu büyük kırılma ve dönüşüm Klasik Realizmin birçok açıdan eleştirilmesine yol açarken aynı zamanda birer NATO müttefiki olan Türkiye-Amerika Birleşik Devletleri ilişkilerinde bir paradigma değişimi yaratmıştır. Küresel ölçekte etki ve sonuç doğuran iki kutuplu sistemin sona ermesi ve yarattığı dönüşüm Türkiye-ABD ilişkilerinde stratejik iş birliği alanları ortaya çıkararak Soğuk Savaş döneminin baskın yaklaşımı Klasik Realizme kıyasla Savunmacı Realizmin argümanlarıyla açıklanabilecek gelişmeler içermektedir. Bu bağlamda bu çalışma tarihsel olarak Soğuk Savaş döneminin sonuna gelindiği zaman diliminde patlak veren Körfez Savaşı'ndan 2000 yılına kadar olan tarihsel süreçte Türkiye-ABD ilişkilerinin ve aynı zamanda stratejik ortaklığının Savunmacı Realizm bağlamında incelenmesini amaçlamaktadır. Bu çerçevede değerlendirildiğinde Irak'ın Kuveyt'i işgalinin akabinde gerçekleşen Körfez Savaşı süresince Türkiye, ABD liderliğindeki koalisyona askerî, teknik ve diğer açılardan destek vermiş ve uluslararası toplumla uyum içerisinde olmuştur. Türkiye-ABD ilişkilerindeki yakın iş birliği "stratejik ortaklık" olarak isimlendirilmiş ve Savunmacı Realizmin temel argümanlarıyla analiz edilebilecek dış politika çıktıları üretmiştir. Türkiye, Körfez Savaşı ve sonrasındaki süreçte ABD ve diğer müttefiklerle birlikte Orta Doğu ve Balkanlar coğrafyasında Savunmacı Realizmin temel varsayımlarıyla paralel bir biçimde bölgesel güvenlik ve istikrarın korunmasını amaçlamıştır.Defensive Realism within the scope of neorealism, which emerged from the reinterpretation of classical realism, one of the traditional approaches in the discipline of international relations, in the context of changes in the system, theoretically emphasizes the balance of defense instead of the balance of power. While the great rupture and transformation that the international system has experienced since the early 1990s led to criticism of classical realism in many respects, it also created a paradigm shift in the relations between Turkey and the United States of America (USA), which are NATO allies. The end of the bipolar system, which had effects and consequences on a global scale, and the transformation it created, created areas of strategic cooperation in Turkey-US relations, and included developments that can be explained by the arguments of defensive realism compared to classical realism, the dominant approach of the Cold War period. In this context, this study aims to examine Turkey-US relations and also their strategic partnership in the historical process from the Gulf War, which broke out at the end of the Cold War, to the year 2000, in the context of defensive realism. Considered in this context, during the Gulf War following Iraq's invasion of Kuwait, Turkey supported the US-led coalition in military, technical and other aspects and was in harmony with the international community. The close cooperation in Turkey-US relations has been named "strategic partnership" and has produced foreign policy outcomes that we can analyze with the basic arguments of defensive realism. During the Gulf War and its aftermath, Turkey, together with the USA and other allies, aimed to maintain regional security and stability in the Middle East and the Balkans in parallel with the basic assumptions of defensive realism
Evaluation of factors affecting chemotherapy response to pre-surgical chemotherapy in locally advanced breast cancer by logistic regression and roc analysis
Get PDFFen Bilimleri Enstitüsü, İstatistik Ana Bilim DalıGünümüzde lokal ileri meme kanserinde neoadjuvan kemoterapi (NAK) standart bir tedavi yöntemi haline gelmiştir. NAK, meme koruyucu cerrahi tedavisini imkanlı hale getirmek, hastayı gereksiz aksiller lenf nodu diseksiyonundan korumak ve hasta prognozunu iyileştirmek için uygulanmaktadır. NAK sonrası patolojik tam yanıt sağlanması hastalarda nüks riskini azaltmaktadır. Bu araştırmada, lokal ileri meme kanserinde NAK yanıtına etki eden moleküler ve klinikopatolojik bağımsız faktörlerin lojistik regresyon ve ROC eğrisi yöntemleri kullanılarak belirlenmesi amaçlanmıştır. Araştırmaya Ocak 2018 ile Temmuz 2023 tarihleri arasında lokal ileri meme kanseri tanısı alan 507 kadın hasta verisi dahil edildi. Araştırmada patolojik tam yanıta etki eden en önemli bağımsız değişkenlerin meme kanseri moleküler alt tipleri, klinik tümör evresi, östrojen reseptörü ve HER2 pozitifliği olduğu belirlendi. Bu araştırma ile luminal HER2 negatif tümörlerde neoadjuvan kemoterapiden en iyi fayda görecek hasta grubu için Ki-67 proliferasyon indeks sınırının %40 ve üzeri olduğu belirlendi.Neoadjuvant chemotherapy (NAC) has become a standard treatment in locally advanced breast cancer. NAC is performed to make breast-conserving surgery possible, to protect from axillary lymph node dissection, and to improve the patient's overall survival. Pathological complete response after NAC reduces the risk of recurrence in patients. This study aimed to determine the molecular and clinicopathological factors affecting the NAC response in locally advanced breast cancer. We used logistic regression and ROC curve methods for detecting the independent factors. Between January 2018 and July 2023, 507 female patients with locally advanced breast cancer were included in the study. It was determined that the most important independent factors affecting the pathological complete response were breast cancer molecular subtypes, clinical tumor stage, estrogen receptor and HER2 positivity. In the luminal HER2 negative group, whom will benefit most from neoadjuvant chemotherapy is that the group with a Ki-67 proliferation index of 40% and above
An Experimental Setup for Mechanical Vibration Analysis Using VLC
Get PDFBerdan Civata B.C.; et al.; Figes; Koluman; Loodos; Tarsus University32nd IEEE Conference on Signal Processing and Communications Applications, SIU 2024 -- 15 May 2024 through 18 May 2024 -- Mersin -- 201235This study explores the potential applications across various domains, including earthquake detection and warning systems, where the system's sensitivity to ground vibrations can contribute to early seismic event detection. Additionally, the study paves the way of developing applications of VLC/T in mechanical vibration and stability analysis of engines and platforms, offering insights into structural integrity and performance optimization. These multifaceted applications underscore the adaptability and potential of VLC/T systems in diverse fields, heralding advancements in sensing, communication, and security technologies. To achieve this, in this study, Peak to Average Power Ratio (PAPR) is proposed to represent the impact of mechanical shocks and vibrations generated by several weights dropped onto the platform with which the receiver is fixed. Even though non-contact measurement methodology is preferred for various reasons, the proposed measurement campaign obtains the data in contact form; however, the system and signal model proposed in this study could easily be extended into non-contact form. Considering the fact that the proposed measurement campaign employs off-the-shelf products, it is cost-effective and very scalable. © 2024 IEEE.U.S. Department of Energy, USDOE; DOE Public Access Pla