150 research outputs found
Colloidal properties of block copolymers based on 2-(acetoacetoxy)ethyl methacrylate: Organic-inorganic hybrid materials
Multiculturalism in religious education in Cyprus : the educational reform : between the previous and the present curriculum
In spite of the recent reform of the curriculum, Religious Education (RE) in Cyprus remains confessional and it is dominated by the Greek Orthodox Church, reflecting the island’s history of occupation, colonization and partition and the need to promote national unity amongst a presumed-to-be homogeneous population, with imperatives for nation-building superseding concerns with the island’s historic cultural diversity. However, a series of changes, broadly since Cyprus’ independence in 1960 but especially since 2000, present challenges to this confessional RE. Therefore, the aim of this PhD thesis is to assess the implications of changes in Greek-Cypriot society for the provision of RE in Greek-Cypriot primary schools, and to identify ways of addressing the challenges posed by these changes; and especially to respond to the increasingly multicultural character of Cyprus. At the same time, it aims to provide some suggestions as to how RE can be reformed along the lines of multiculturalism in order to promote the reconciliation of the island and to encourage students’ spiritual, moral, social and cultural development. This thesis primarily considers the way RE is taught in Cyprus, but at the same time it examines the RE curricula frameworks of other European countries, since Cyprus is a part of the European Union and thus, shares similar visions and challenges with them. For the conduction of this PhD thesis, a combination of quantitative and qualitative methods were applied. However, the main research tool was a RE booklet which was developed by the researcher and it was used as an additional teaching material which aimed to reform students’ knowledge, views and attitudes about a variety of topics.
This PhD research has revealed that some of students’ knowledge, views and attitudes regarding different spiritual, moral, social, and cultural issues have been enriched and changed, in some way, after being taught from the RE Booklet. Most of their original misconceptions and false knowledge have also been successfully redressed. However, their views and attitudes towards the minority community of Cyprus, Turkish-Cypriots, have not been changed, and this reveals that a systematic effort needs to be made in order to change well-embedded confessional views. Another finding was that the majority of Greek-Cypriot students, teachers and educators prefer a more multicultural RE rather than a confessional one, but there are some reservations which need to be addressed before putting this into practice. These include: the Church of Cyprus’ preference for a confessional RE, its influence on the educational system, the confessional teaching material, the inadequate guidance and support offered to teachers by the Ministry of Education and individual prejudices towards people of different cultural and religious origins. This research has also revealed that the three representatives from the religious minorities of Cyprus (Maronite/Armenian/Turkish-Cypriot) believe that the majority of Greek-Cypriot teachers have very negative attitudes towards religious and cultural diversity, and so they are unwilling to promote multicultural education within their classrooms. They also perceive the Greek-Cypriot community as being more nationalistic and religiously fundamentalist than their own communities. Finally, this PhD thesis has reached the conclusion that the integration of citizenship and religious education can promote intercultural dialogue which will help individuals to coexist, cooperate, understand and respect each other. However, the Cypriot society is not prepared yet for a radical change in the way RE is taught. Therefore, it is a better option initially to combine confessional and multicultural RE; to orient RE to multiculturalism, and not to change radically the way that RE is taught, because that would provoke adverse reaction. At the same time, the Ministry of Education has an instrumental role to play in improving RE; it needs to seriously take into consideration the presence of non-Orthodox children attending schools, to correct students’ misconceptions and combat their social and religious prejudices, to encourage assessment for learning and to ensure that education is free of political interests and Church influences
From single-core nanoparticles in ferrofluids to multi-core magnetic nanocomposites: Assembly strategies, structure, and magnetic behavior
Low temperature and cost-effective growth of vertically aligned carbon nanofibers using spin-coated polymer-stabilized palladium nanocatalysts
We describe a fast and cost-effective process for the growth of carbon nanofibers (CNFs) at a temperature compatible with complementary metal oxide semiconductor technology, using highly stable polymer-Pd nanohybrid colloidal solutions of palladium catalyst nanoparticles (NPs). Two polymer-Pd nanohybrids, namely poly(lauryl methacrylate)-block-poly((2-acetoacetoxy) ethyl methacrylate)/Pd (LauMA(x)-b-AEMA(y)/Pd) and polyvinylpyrrolidone/Pd were prepared in organic solvents and spin-coated onto silicon substrates. Subsequently, vertically aligned CNFs were grown on these NPs by plasma enhanced chemical vapor deposition at different temperatures. The electrical properties of the grown CNFs were evaluated using an electrochemical method, commonly used for the characterization of supercapacitors. The results show that the polymer-Pd nanohybrid solutions offer the optimum size range of palladium catalyst NPs enabling the growth of CNFs at temperatures as low as 350 degrees C. Furthermore, the CNFs grown at such a low temperature are vertically aligned similar to the CNFs grown at 550 degrees C. Finally the capacitive behavior of these CNFs was similar to that of the CNFs grown at high temperature assuring the same electrical properties thus enabling their usage in different applications such as on-chip capacitors, interconnects, thermal heat sink and energy storage solutions
Supramolecular Assemblies Constructed by Cucurbituril-Catalyzed Click Reaction
Cataloged from PDF version of article.Cucurbituril homologues are multi-functional macrocycles that can find applications in many areas and have numerous interesting features setting them apart from the other macrocycles. Among them, the ability of one of the cucurbituril homologues, cucurbit[6]uril (CB6), to catalyze 1,3-dipolar cycloaddition in a regiospecific fashion is truly exceptional. Using this feature, small molecules can be clicked together to form complex structures in a very efficient way. Accordingly, in this article we review recent research involving the use of CB6-catalyzed 1,3-dipolar cycloaddition or the click reaction of CB6 in the construction of supramolecular assemblies including rotaxanes, pseudorotaxanes, polyrotaxanes, polypseudorotaxanes, molecular switches, machines, and nanovalves
Robust Hydrophobic and Hydrophilic Polymer Fibers Sensitized by Inorganic and Hybrid Lead Halide Perovskite Nanocrystal Emitters
Advances in the technology and processing of flexible optical materials have paved the way toward the integration of semiconductor emitters and polymers into functional light emitting fabrics. Lead halide perovskite nanocrystals appear as highly suitable optical sensitizers for such polymer fiber emitters due to their ease of fabrication, versatile solution-processing and highly efficient, tunable, and narrow emission across the visible spectrum. A beneficial byproduct of the nanocrystal incorporation into the polymer matrix is that it provides a facile and low-cost method to chemically and structurally stabilize the perovskite nanocrystals under ambient conditions. Herein, we demonstrate two types of robust fiber composites based on electrospun hydrophobic poly(methyl methacrylate) (PMMA) or hydrophilic polyvinylpyrrolidone (PVP) fibrous membranes sensitized by green-emitting all-inorganic CsPbBr3 or hybrid organic-inorganic FAPbBr3 nanocrystals. We perform a systematic investigation on the influence of the nanocrystal-polymer relative content on the structural and optical properties of the fiber nanocomposites and we find that within a wide content range, the nanocrystals retain their narrow and high quantum yield emission upon incorporation into the polymer fibers. Quenching of the radiative recombination at the higher/lower bound of the nanocrystal:polymer mass ratio probed is discussed in terms of nanocrystal clustering/ligand desorption due to dilution effects, respectively. The nanocomposite's optical stability over an extended exposure in air and upon immersion in water is also discussed. The studies confirm the demonstration of robust and bright polymer-fiber emitters with promising applications in backlighting for LCD displays and textile-based light emitting devices
Synthesis and colloidal properties of a novel type of block copolymers bearing beta-dicarbonyl residues
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