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Die wesentlichen Änderungen des Türkischen zwangsvollstreckungs- und insolvenzgesetzes
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Enantioselective synthesis of 2,3-dihydrofurans using a bifunctional quinine/squaramide organocatalyst
No full textAsymmetric organocatalytic domino type Michael-S(N)2 reactions give access to enantiomerically enriched dihydrofuran derivatives that can be used as valuable chiral building blocks. A variety of alpha-bromonitroalkenes and 1,3-dicarbonyl compounds were allowed to react under optimized conditions, in the presence of a bifunctional quinine-derived sterically encumbered squaramide (H-bond donor) organocatalyst. The conditions developed in this article have great advantages over the methods known in the literature in terms of reaction duration (1-6 h vs. 24-96 h) and reaction temperature (room temperature vs. -20 degrees C to -50 degrees C) giving rise to quite diastereoselective products with good enantioselectivities up to 97% ee
Development of biomimetic hydroxyapatite containing dental restorative composites
No full textThe aim of the study was to evaluate the incorporation effect of biomimetic hydroxyapatite (BHA) particles on the mechanical properties of experimental dental composites. Two experimental composites were produced from the same organic matrix, Si/Zr nanocluster, and SiO2/silane as main inorganic reinforcing fillers. 7wt% BHA was added to one of the groups to evaluate its effect on mechanical properties. The BHA was also modified with 3-MPTMS to improve chemical bonding. Chemical structures and physical properties of the fillers were identified by XRD, FTIR, XPS, TGA, SEM, BET, and Zeta-Sizer. According to ISO 4049 and DIN 50,133 the mechanical properties, and to ISO 10993-5:2009 the biocompatibility was investigated. Analysis of variance (ANOVA) was used for the statistical analysis of acquired data. The BHA was synthesized by the biomimetic method in simulated body media (SBF). The SEM images of BHA/Silane particles demonstrated rod-like shapes and similar dimensions with natural hydroxyapatite present in tooth enamel. The modification by using 3-MPTMS was decreased the mean particle size of the fillers due to a lower agglomeration tendency. Moreover, the addition of small mass fractions of the BHA into the dental resins can substantially meet the ISO 4049 requirements. Consequently, the BHA was not adversely decreasing the mechanical properties of the dental composites. Also, the biocompatibility of the BHA-containing composites was found better than the samples without BHA-containing composites. The incorporation of the BHA can meet the mechanical requirements of dental resins and composites. Additionally, it may show regenerative properties against small lesions
Factors Affecting Work-Family Conflict in the Digital Work Environment
No full textRemote work, which has become widespread in today’s digitalized world, has gained pace globally. Especially with the effect of the pandemic, many institutions in different sectors have had to quickly adapt to this new order. Remote working is now at an irreversible point in today’s working life, and therefore, the need to carry out studies that will increase the effectiveness of remote working, as well as that will help to eliminate the situations that will reduce the success of remote working, has gained vital importance in providing competitive advantage for institutions. The virtualization of business practices, increasing virtual teams and virtual meetings can force the employees to be available at any time, which can lead to work-family conflicts and as a result to employee burnout and poor performance. In today’s digital business world, both employees and employers have important responsibilities to prevent work-family conflict, which has a significant impact on both employee and company success. The aim of this study is to determine the factors that have either a positive or negative effect on the work-family conflict experienced by the employees in their digitally supported remote working life, based on a literature review of recent relevant studies. © Peter Lang GmbH
Ayrık sinyaller
No full textAyrık Sinyaller kitabında ülkemiz öğrencilerine ana dillerinde temel bilgi vermeyi hedefle miştir. Ana dilimizde yeterli kaynak olmadığı ve öğrencilerin yabancı dil bilgilerinin yetersizliği de göz önüne alındığında ana dildeki kaynakların ne kadar önemli olacağı ortaya çıkmaktadır. Ancak adından da anlaşılacağı üzere bu kitap, giriş düzeyinde de olsa bir ANALİZ kitabıdır ve buna bağlı olarak göreceli fazla matematik ve kuramsal bilgi içermeyi amaçlamıştır
Philosophy and thought as an activity
No full textDüşünme, insan için düşüncenin ortaya çıkması için yegâne imkândır. İnsan, bütün soyutluğuna rağmen, teorik düşünce ile de edimsel olarak irtibat kurar. Bu makalede, felsefe etkinliği bir “eylem” olarak ele alındı ve felsefe yapmanın ve teorik düşünmenin bir eylem olarak ne anlama geldiği araştırıldı. Öncelikle, düşünme ve düşünce arasındaki ilişki ortaya konmaya çalışıldı. Daha sonra felsefe faaliyetinin insanın diğer eylemleri ile ortak tarafları ve onu diğer eylemlerden ayıran özellikleri irdelendi. Bu anlamda, ilk olarak insani eylemin en ilkel zemini olan duyusallık ile felsefe etkinliğinin ilişkilisi sorgulandı. Özellikle Platon ve Aristoteles’in işaret ettiği, felsefenin başlangıcındaki estetik temelin altı çizildi ve onların görüşlerinden yola çıkılarak bu ilişkinin mahiyeti araştırıldı. Felsefeyi bir etkinlik olarak ele almak, felsefenin en temel ayrımını, teori ve pratik arasındaki ayrımı bir bütün olarak değerlendirmeyi gerektirir. Bu bağlamda, eylemlerdeki rasyonelliğin düşünce faaliyeti ile ilişkisi araştırıldı. Bilhassa Aristoteles’in gaye/amaç ve eylem ilişkisi içerisinde geliştirdiği ahlak anlayışı çerçevesinde, düşünme ve ahlak arasında nasıl bir ilişki olduğu ortaya konulmaya çalışıldı. Son olarak, çağdaş bilgi ve bilim anlayışı bu ilişki perspektifinden değerlendirildi.Thinking is the only way for the emergence of thought for human beings. Despite all its abstractness, human makes contact with theoretical reasoning performatively. In this article, philosophy is discussed as an action and what it means to philosophize and theoretical thinking as an action is explored. First of all, the relationship between thinking and thought is revealed. Then, the common aspects of philosophical activity compared to other actions of man and differences from the other actions are examined. In this sense, firstly, the relationship between sensibility, which is the most primitive ground of human action, and philosophical activity is questioned. In particular, the aesthetic basis at the beginning of philosophy, which was pointed out by Plato and Aristotle, is underlined and the nature of this relationship is investigated based on these philosophers’ views. Treating philosophy as an activity requires evaluating the most fundamental distinction of philosophy, the distinction between theory and practice, as a whole. In this context, the relationship between rationality in actions and thought activity has been investigated. In particular, considering the framework of Aristotle’s understanding of morality which is developed within the relationship of the purpose and the action, the kind of relationship between thinking and morality is attempted to be revealed. Finally, the contemporary understanding of knowledge and science was evaluated from the perspective of this relationship
Production of rare earth element oxide powders by solution combustion: a new approach for recycling of NdFeB magnets
No full textNdFeB magnets are employed in various technological applications due to their outstanding magnetic properties, such as high maximum energy product, high remanence and high coercivity. Production of NdFeB has gathered more interest, therefore the demand for rare earth elements (REEs) has continuously increased. The recovery of REEs has become essential to satisfy this demand in recent years. In the present study, a promising flowsheet is proposed for REEs recovery from NdFeB magnets, as follows: (1) acid baking, (2) employment of ultrasound-assisted water leaching, (3) the production of rare earth oxides (RE oxides) by a solution combustion method, and (4) a calcination process. There are several problems in conventional precipitation such as loss of a high amount of metal during precipitation and use of a high amount of precipitation agents. It is worth mentioning that the consumed precipitation agents in the solution are not easily recyclable. This study aims especially to investigate the production of RE oxides from recycled NdFeB magnets by solution combustion as an alternative to conventional precipitation methods. In this way, impurities that may have come to the system from the precipitation agents were prevented. Moreover, in the production of RE oxides via the above-mentioned method, precipitation agents and filtration steps were not necessary
Almanya'daki Suriyeli mültecilerin kültürlerarası yetkinliği : göçmenlere yönelik kültürlerarası öğrenme ve kültürlerarası yetkinliğin artırılmasına dair bir model çalışması
No full textDie vorliegende Arbeit hat zum Ziel festzustellen, ob und in welchem Maße Migranten in Deutschland interkulturelle Kompetenz aufweisen und wie die interkulturelle Kompetenz von Migranten entwickelt bzw. gefördert werden kann. Infolgedessen wurde ein Modell entworfen, das der interkulturellen Kompetenzentwicklung von Migranten beitragen soll. Für die Konstruktion des Modells wurde vorerst ein theoretischer Rahmen erstellt, in dem Konzepte wie Kultur, kulturvergleichende Theorien, Migration, Interkulturalität, interkulturelle Kompetenz und interkulturelles Lernen dargelegt wurden. Anschließend wurde eine qualitative Forschung mit syrischen Flüchtlingen durchgeführt und ein Versuch vorgenommen, Teilkompetenzen der interkulturellen Kompetenz von Migranten festzustellen. Die Ergebnisse legten dar, dass sich syrische Flüchtlinge mit hohem Bildungsniveau als überwiegend interkulturell kompetent aufweisen und fähig sind, interkulturelle Interaktionssituationen bewusst und erfolgreich zu steuern und zu bewältigen. Auch resultierte das Ergebnis, dass fehlende Teilkompetenzen kein Hindernis für die Weiterführung von Konversationen mit fremdkulturellen Individuen bilden. Des Weiteren haben sich Kenntnisse über die Sprache der Mehrheitskultur als besonders vorteilhaft für interkulturelle Kommunikationssituationen erwiesen. Unter Berücksichtigung dieser Ergebnisse wurde im entworfenen Modell der Fokus auf Fremdsprachenerwerb, Kulturbewusstsein und Interkulturalität gelegt.Mevcut çalışmanın amacı, göçmenlerin kültürlerarası yetkinliğe sahip olup olmadıklarını tespit edip bu yetkinliği hangi ölçüde ortaya koyduklarını ölçmek ve göçmenlerde bu yetkinliğin nasıl güçlendirilebileceğini araştırmaktır. Buna istinaden göçmenlerin kültürlerarası yetkinliğini artırmaya katkı sağlaması amaçlanan bir model geliştirilmiştir. İlgili modelin oluşturulması için öncelikle teorik bir çerçeve oluşturularak kültür, karşılaştırmalı kültür kuramları, göç, kültürlerarasılık, kültürlerarası yetkinlik ve kültürlerarası öğrenme gibi konulara yer verilmiştir. Ardından Suriyeli mültecilerle ampirik bir çalışma gerçekleştirilerek göçmenlerde kültürlerarası yetkinliğin alt becerileri tespit edilmeye çalışılmıştır. Elde edilen bulgular, yüksek eğitim düzeyine sahip Suriyeli mültecilerin ağırlıklı olarak kültürlerarası yetkinlik becerisine sahip olduklarını ve kültürlerarası etkileşim süreçlerini başarılı ve bilinçli biçimde yönetebildiklerini göstermiştir. Bunun yanı sıra bazı alt becerilerin eksik olmasının farklı kültürlere mensup kişilerle iletişimin sürdürülmesini olumsuz etkilemediği sonucuna varılmıştır. Ek olarak, egemen kültürün dili hakkında bilgi sahibi olmanın kültürlerarası iletişim için bilhassa faydalı olduğu görülmüştür. Bu sonuçlar dikkate alınarak geliştirilen model çalışmasında yabancı dil öğrenimi, kültürel farkındalık ve kültürlerarasılık konularına ağırlık verilmiştir