287 research outputs found
The fire resistance of high-strength concrete containing natural zeolites
No full textMore sustainable and environmentally friendly concretes are essential to reduce the climatic and environmental impact of the growing demand for concrete to fuel urban sprawl. This manuscript reports on an experimental study designed to test the fire resistance of one such concrete, prepared to contain natural zeolite-bearing tuff. The fire resistance of concretes containing natural zeolites has received little attention and is therefore poorly understood. Relative reductions in residual uniaxial compressive strength as a function of increasing temperature (up to 1000 °C) were very similar for the reference concrete (containing no tuff) and the tuff-bearing concrete. These data can be explained by the similar influence of high-temperature on the chemical (dehydroxylation reactions) and physical (microcracking and porosity) properties of both concretes. The satisfactory performance of the concrete containing natural zeolites following fire is welcome owing to the economic, climatic, and environmental benefits of using natural pozzolan and aggregate substitutes
Pre-service Teachers’ Perceptions of the Effectiveness of Multi-Author Blogging: A Quasi-Experimental Mixed Methods Investigation
No full textMulti-author blogs have created new opportunities for the construction and dissemination of knowledge. However, very few studies have examined the effect of multi-author blogging in pre-service teacher education and little is known about this phenomenon. This study argues that multi-author blogging can provide student-teachers with opportunities for experiential learning. The study adopts a mixed method quasi-experimental design to explore student-teachers’ perspectives of the effectiveness of multi-author blogging in the College of Basic Education situated within Kuwait’s Public Authority for Applied Education and Training (PAAET). The sample consisted of 63 student-teachers who used multi-author blogging for learning (Experimental Group) and 67 student-teachers who were taught using traditional in-class lectures (Control Group). Questionnaires and focus groups were used to investigate student-teachers’ perceptions of multi-author blogging. Results suggest that a statistical difference between the Experimental Group and Control Group in the second and final exams. Findings also results indicate that a sense of community, peer learning, and perceived collaborative learning significantly contributed to learning through blogging. The conclusion is that multi-author blogging may be a promising approach to enhance student-teachers’ learning of instructional technology courses. The study provides insights into opportunities for further studies. Keywords: multi-author blogging, experiential learning, collaborative learning, communities of practice, reflection, student perceptions, pre-service teacher education DOI: 10.7176/JEP/10-14-14 Publication date:May 31st 201
Automated mineralogy (SEM-EDS) approach to sandstone reservoir quality and diagenesis
No full textPorosity and permeability define the reservoir quality of a sandstone. Porosity and permeability are controlled by primary sedimentary characteristics and subsequent diagenetic modification. Grain size, sorting, detrital mineralogy, and matrix content are defined at the point of deposition. Bioturbation, infiltration, continued alteration of reactive minerals and soft sediment deformation can occur soon after deposition and, together with the primary characteristics, these condition, or define, how a sediment will behave during subsequent burial. Diagenetic modifications include compaction, initially mechanical and then chemical, mineral growth and, in some cases, grain dissolution and development of secondary pores. Porosity and permeability typically decrease as diagenesis progresses. Scanning Electron Microscopy-Energy Dispersive Spectroscopy (SEM-EDS) approaches can be applied to study many aspects of sandstone diagenesis including detrital mineralogy, grain size, sorting, grain shape, grain angularity and matrix content. SEM-EDS is also useful for defining quantities and location in the pore network of cements that are mineralogically distinct from detrital grains (e.g., calcite, dolomite, siderite, or anhydrite). SEM-EDS can be useful for studying clay mineral cements, especially when they occur in patches bigger than 5–10 μm. In sandstones, SEM-EDS is not so useful when the cements are mineralogically identical to detrital grains (e.g., quartz cement in quartz sandstones) where additional signals such as cathodoluminescence (CL) may be required. Macro- and meso-pores can be quantified using SEM-EDS but, on its own, it cannot automatically measure micro-porosity as it is below the minimum 1 µm spatial resolution of the approach. Mechanical compaction, a key process that causes porosity-loss in sandstones, is not easily quantified using SEM-EDS. Nonetheless, together with additional routine techniques, SEM-EDS can be used to solve most problems associated with sandstone diagenesis and reservoir quality
The FUP Credibility: a user satisfaction survey
No full textThis research deals with electronic publishing contemporary academic context. In particular the focus of the research is to verify the degree of credibility of Firenze University Press (FUP), academic electronic press project of the University of Florence, investigating its users’ perceptions and opinions. This survey was motivated by the need of FUP to develop a strategy focused to rationalise resources, responding to users requirements. Survey investigated mainly two categories of FUP user: professors as customers, authors (or potential authors) and students, as customers. Mixed method have adopted to draw the survey model, that combining qualitative and quantitative approaches, use both of them. Sample survey methodology have been used to obtain a picture of the general trend of faculty of the University of Florence, by selecting and measuring a sample from the whole population. Research have been directed to a sample of ‘electronically oriented’ users, those who have no prides towards Internet and email as information and communication tools and let personal email to be visible on the University website. On the basis of data and opinions gathered emerged:
1. high percent of user satisfaction;
2. promotional factors:
Primary
- high visibility
- copyright guarantee
Secondary
- speediness
- easiness
- extended access;
3. recommendations:
a) Activity of promotion and growth of visibility
b) Collaboration with commercial publishers, other University Presses
c) Production scheme
d) Editing
e) Access and sellin
Technology Leadership for Secondary Vocational Education Development in China
No full textIn the digital age, rapid advancement in technology influence education inherently. This study explored the technology leadership for secondary vocational education development in China. Though content analysis method reviewing critically the research works of china secondary vocational education situation, educational technology development in all of the world and educational leadership theories, the author identify technology leadership including building the technology (or ICT) vision, enhance professional development, transform learning and teaching and evaluate outcomes. Keywords: Technology Leadership, Secondary Vocational Education, Vocational Education Leadership, Classroom Technology, ICT. DOI: 10.7176/JEP/10-19-08 Publication date:July 31st 201
Kepraktisan Bahan Ajar Statistika Pendidikan Fisika Bermuatan Model Cooperative Problem Solving
No full textThe statistics of physics education are compulsory course with a lot of material descriptions so the lectures must be assisted by the use of teaching materials. The lectures of statistics of physics education that took place in the July-December 2017 semester illustrates that: 1) teaching materials are less attractive to students, 2) the assignments given are quite clear and sufficient in accordance with the level of thinking of students, 3) materials delivered by the lecturer is in accordance with the targets in the syllabus with some material is still abstract, 4) the lecture have been pursued in accordance with the syllabus but the methods used have not varied and 5) students learn material of statistic of physics education only from the lecturer explanation so that only a few students can answer statistical problems quickly and correctly. This indicates that it is need provided teaching materials with a cooperative problem solving model. The author has tried to design teaching materials of statistic of physics education with cooperative problem solving models with very valid criteria according to the assessment of six experts with educational qualifications of statistics and physics education. However, this teaching material has not been tested at normal conditions in the lectures so that the level of practicality has not been revealed. The aim of this study was to determine the practicality level of educational statistical teaching materials containing cooperative problem solving models according to users, namely lecturers and students who listed in the course. Type of research is research and devel-opment with the ADDIE model. The ADDIE model stands for Analyze, Design, Develop, Implement and Evaluation. This research is part of the Implementation stage where development products are implemented in real terms so that the level of practicality can be measured with indicators of ease of use, attractiveness and efficiency. Data collection used student response questionnaires and lecturer response questionnaires with a Likert scale. Data analysis used descriptive statistic analysis techniques. The results showed that teaching materials of physics education statistics had very practical criteria (lecturers opinion) and practical (students opinion). The conclusion of this study is the teaching materials of statistic of physics education with cooperative problem solving model has been practically used in lecture
The Integration of the Word Processor into a Process Writing Lesson
No full textThe present paper delves into the creation of a computer-based lesson via the effective exploitation of the word processor. After the author presents the teaching situation, he discusses the rationale for the use of the word processor in a process writing lesson based on the relevant literature. Moreover, the relevant teaching materials are described and placed in appendices and the teaching procedure is justified in relation to the pedagogical framework. Keywords: TEFL, teaching methodology, word processor, process writing, writing skill DOI: 10.7176/JEP/10-22-14 Publication date: August 31st 201
Open Access to Peer-Reviewed Research through Author/Institution Self-Archiving: Maximizing Research Impact by Maximizing Online Access
No full textAll refereed journals will soon be available online; most of them already are. This means that anyone will be able to access them from any networked desk-top. The literature will all be interconnected by citation, author, and keyword/subject links, allowing for unheard-of power and ease of access and navigability. Successive drafts of pre-refereeing preprints will be linked to the official refereed draft, as well as to any subsequent corrections, revisions, updates, comments, responses, and underlying empirical databases, all enhancing the self-correctiveness, interactivity and productivity of scholarly and scientific research and communication in remarkable new ways. New scientometric indicators of digital impact are also emerging <http://opcit.eprints.org> to chart the online course of knowledge. But there is still one last frontier to cross before science reaches the optimal and the inevitable: Just as there is no longer any need for research or researchers to be constrained by the access-blocking restrictions of paper distribution, there is no longer any need to be constrained by the impact-blocking financial fire-walls of Subscription/Site-License/Pay-Per-View (S/L/P) tolls for this give-away literature. Its author/researchers have always donated their research reports for free (and its referee/researchers have refereed for free), with the sole goal of maximizing their impact on subsequent research (by accessing the eyes and minds of fellow-researchers, present and future) and hence on society. Generic (OAi-compliant) software is now available free so that institutions can immediately create Eprint Archives in which their authors can self-archive all their refereed papers for free for all forever <http://www.eprints.org/>. These interoperable Open Archives <http://www.openarchives.org> will then be harvested into global, jointly searchable "virtual archives" (e.g., <http://arc.cs.odu.edu/>). "Scholarly Skywriting" in this PostGutenberg Galaxy will be dramatically (and measurably) more interactive and productive, spawning its own new digital metrics of productivity and impact, allowing for an online "embryology of knowledge.
21st Century Obstacles for Children’ Physical, Social, Emotional and Moral Development (PSEM) – With Special Reference to COVID-19
No full textHuman beings become the human resource while humans possess good Physical, Social, Emotional, and Moral Development (PSEM). This PSEM is developing during formal and concrete operational stages. But the contemporary school, schooling, social, and family environment are not providing sufficient opportunities for children for sound physical, social, emotional, and moral development (PSEM). The socio-economic changes, revaluation in information and communication technology are becoming great challenges to the children's physical, social, emotional, and moral development. Keeping these as a background the author intended to descript the challenges and obstacles in the development of PSEM by 21st-century children with special reference to the Covid-19 situation. DOI: 10.7176/JEP/12-24-01 Publication date:August 31st 202
Telling Stories in Public Speaking
No full textEnglish public speaking is a comparatively new but promising course in China. Aristotle’s Rhetorical Triangle reveals the importance of ethos, pathos, and logos in effective and successful communication. To appeal to the audience’s emotion and establish ethos and pathos, storytelling is a good way and it’s also an important skill in public speaking. Taking the 25 most popular TED talks playlists as the study object, the author found that storytelling, especially telling personal stories is frequently used in those TED talks. After making clear the definition of a story, this article attempts to make clear how to tell a good story and what teachers can do to help students tell good stories in public speaking. Keywords: storytelling; TED talks; rhetorical triangle; personal story DOI: 10.7176/JEP/14-33-10 Publication date: November 30th 202
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