319 research outputs found
A case study: the development of Stephanie's algebraic reasoning
No full textThis research provides an analysis of the mathematical growth and development of one student, Stephanie, as she worked on early algebra tasks during her eighth-grade year as part of a teaching experiment. Stephanie was among the original participants in a longitudinal study which investigated how students develop mathematical ideas under conditions that fostered independent exploration, reasoning, and justification of ideas (Maher, 2005). A qualitative approach based on the analytical model described by Powell, Francisco, and Maher (2003), was taken in analyzing videotape data from the Robert B. Davis Institute of Learning archive, along with student work. Seven task-based interview sessions were analyzed, spanning a six month period, beginning from November 8, 1995 to April 17, 1996. The research focused on Stephanie’s algebraic reasoning; in particular, how she built an understanding of the binomial theorem and related it to Pascal’s triangle. Stephanie’s representations, her explanations and justifications, and her methods of dealing with obstacles to understanding, were all examined and provided the basis for this research. The analysis shows that Stephanie built her mathematical understanding through the development of multiple representations of concepts and moved fluidly between and among the representations that she organized into ‘symbolic’ and ‘visual’ representations. Symbolic representations included algebraic expressions, combinatorics notation, and Pascal’s triangle while visual representations included drawings, tables, models formed by algebra blocks and other manipulatives, and towers built with unifix cubes. Furthermore, through Stephanie’s explanations and justification of her representations and reasoning in general, she invented strategies to convince herself as well as the researchers that she had fulfilled the requirements of the problem task. When dealing with obstacles to her understanding such as lack of information, or calculating obstacles, Stephanie acquired the use of several heuristic methods in order to overcome them. These included the use of substituting in numbers in order to test a conjecture; returning to basic meaning; drawing diagrams; building models; and considering a simpler problem. Throughout the task-based interviews, Stephanie retrieved knowledge from her earlier problem solving and extended this knowledge to build new ideas, while tackling more challenging problems. In particular, Stephanie mapped the coefficients in the binomial expansion to particular rows in Pascal’s Triangle; she connected these ideas to her problem solving from earlier work in the elementary grades. The findings are relevant to the timing and method of early algebraic instruction in schools.Ed.D.Includes bibliographical referencesby Eman Y. Aboelnag
Perancangan Web Jasa Penyewaan Sound System Pada Eman Sounds: Penyewaan, Sound System, Web
No full textEman Sounds is a business venture in the field of sound system rental services. The Eman sounds does not currently have a website application. The leasing service transaction system is still done conventionally, where if anyone wants to rent a sound system for a wedding or other official event can come directly to the Eman Sounds to see and rent it. For transaction reports sound system rental services are still recorded with paper so as to allow for data loss and errors in recording transactions. The purpose of this study is that the author will design a web sound system rental service for Eman Sounds so that it is expected to simplify the process of leasing transactions and making rental reports. The author uses the system development method, namely the waterfall model for this study. The use of PHP and HTML programming languages the author uses to create web rental services and MYSQL as the database. The results of this study are expected that with a web design sound system rental service can help Eman Sounds in the process of managing rental transactions and reports
D04. Department of Pharmaceutics and Drug Delivery
No full textCorresponding author (Pharmaceutics and Drug Delivery): Eman Ashour, [email protected]://egrove.olemiss.edu/pharm_annual_posters/1026/thumbnail.jp
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The principle of non-refoulement under the European Convention on Human Rights and the United Nations Convention Against Torture and Other Cruel, Inhuman or Degrading Treatment or Punishment /
No full textIn this study, Eman Hamdan examines the protection against refoulement under the European Convention on Human Rights and the UN Convention against Torture, with the aim to determine which of those Conventions affords better protection for international protection seekers. Hamdan explores the scope and content of the principle of non-refoulement under both Conventions and the application of the principle to the immigration control measures and the extraordinary rendition operations. The author provides a comprehensive and comparative analysis of the case-law of both the European Court of Human Rights and the UN Committee against Torture on the procedural and substantive aspects of the principle of non-refoulement, in order to help practitioners to determine which of these human rights treaty bodies is more favorable for their specific non-refoulement case. This book was chosen to participate in the Professor Walther Hug Prize 2014-2015, which is a prize for the best legal researches in Switzerland for each academic year
Direct Organogenesis and Indirect Somatic Embryogenesis by In Vitro Reversion of Mature Female Floral Buds to a Vegetative State
No full textIdentification and Characterization of Virulence-Associated Genes from Pathogenic Aeromonas Hydrophila Strains
No full textIsolation and identification of oil degrading bacteria from oil contaminated soil, 2015
No full textOil spills are a universal threat impacting local, national and world communities alike. Bioremediation that is natural, efficient, economical and safe is the best solution for protecting the environment from oil related damages. In this study, motor oil degrading bacteria were isolated from oil-contaminated soil samples from a suburban Atlanta, Georgia community. Mineral salt broth containing 1 Ow-40 motor oil as the sole carbon source was used to isolate motor oil degrading bacteria. Motor oil tolerant and metabolizing bacteria were identified using morphological and biochemical tests. Two bacterial isolates were then tested for their tolerance varying concentrations of diesel and kerosene oils for comparison with motor oil consumption. Observed results suggest that the isolated bacteria from oil contaminated soil possess abilities to metabolize motor oil, kerosene and diesel. Knowledge of the tolerance ranges of the isolated bacteria can indicate their potential to be of use in the remediation of terrestrial petroleum oil spills in a manner that is natural, economical, quick and efficient
Teaching leadership in UAE business and education programmes: a habermasian analysis within an islamic context
No full textThe study uses Habermas\u27 account of critical theory to investigate leadership curriculum in selected UAE business and education programmes and examine the extent to which the curriculum is derived from and linked to students\u27 cultural and Islamic values. The study is conducted in response to scholars\u27 call for developing leadership models and practices that integrate both traditional and international knowledge to mitigate the dominance of Western theories and values over the curriculum, which threatens the Islamic and cultural identity. It aims to start a dialogue between different sources of knowledge and to select the practices that work best in a certain society given its unique cultural and religious values. This research employs a mixed methods approach that takes classical pragmatism as its philosophical foundation. The purpose for mixing methods is complementarity, development and triangulation (Greene, 2007). Research methods include critical discourse analysis of course materials, class observat..
Leadership curricula in UAE business and education management programmes: A Habermasian analysis within an Islamic context
No full text© 2019, Emerald Publishing Limited. Purpose: The purpose of this paper is to investigate leadership curricula in UAE business and education management programmes and examine the extent to which they are derived from and linked to students’ cultural and Islamic values using Habermas’ critical theory. Design/methodology/approach: The study employs a mixed methods approach that takes classical pragmatism as its philosophical foundation and critical theory as a theoretical lens. Data are collected in four sequential phases using critical discourse analysis of course materials, class observations, student survey and faculty interviews. Results are integrated at the interpretative level and abductive reasoning is used as the logic of justification. Findings: Results show that despite the increasing efforts to incorporate cultural and Islamic values into the curriculum, it is still mainly dominated by Western theories and models of leadership, especially in the leadership courses offered by business schools, mainly because of accreditation requirements and the lack of English resources and theories on UAE and Islamic models of leadership. Research limitations/implications: The study is limited to leadership curricula in the UAE. Researchers may extend and broaden the scope of the study by investigating leadership curricula in the Gulf and/or the Middle East. Future studies may also look at other theoretical frameworks recommended by other management scholars such as Mezirow’s transformational learning and the socio-constructivist approach (Hotho and Dowling, 2010). This study aims to open an ongoing debate and further investigation on the topic. Practical implications: The results of the current study may inspire faculty members and programme coordinators to develop critical and culturally relevant curricula that are informed by Habermas’ critical theory and best teaching practices. Originality/value: The study adds to the current knowledge base through its research design and approach that address an under-investigated topic. None of the current studies empirically investigated leadership curricula in the UAE. The theoretical framework and research findings can be used to develop culturally relevant and value-oriented leadership curricula that reflect indigenous and Western perspectives of leadership
Poor sleep efficiency and daytime napping are risk factors of depersonalization disorder in female university students
No full text© 2020 The Author(s) Objectives: Depersonalization is characterized by feelings of detachment from reality and has been associated with anxiety and depression, both of which have a bi-directional relationship with sleep. To date, few studies have directly examined the potential relationship between sleep and depersonalization, which was the primary objective of our study. Design/methods: A cross-sectional study of female, Emirati, university students (n = 100) was conducted. Participants completed the Pittsburgh Sleep Quality Index (PSQI), the Cambridge Depersonalization Scale (CDS) and the Hospital Anxiety and Depression Scale (HADS). Additionally, 36 of the 100 participants wore wrist actigraphy for two consecutive weekdays. Average sleep duration, and average sleep efficiency (SE; %) across the two nocturnal sleep episodes were calculated. Total number of sleep episodes were obtained from wrist actigraphy and sleep logs. Results: A significant, positive relationship was observed between PSQI global score and CDS total score (r = 0.21, p = 0.04). Actigraphy-estimated average nocturnal sleep duration was not significantly associated with the CDS. Compared to nocturnal sleepers only, those who undertook daytime naps had almost three times the risk of meeting the criteria for depersonalization disorder (OR = 2.95, 95% CI: 1.04–8.41), after adjustment. For each 1% increase in SE a 23% decreased risk of depersonalization was observed (OR = 0.77, 95% CI: 0.61–0.96), after adjustment. Conclusions: Sleep screening in young adults may help to ensure better detection and management of psychological health outcomes. Our findings need to be confirmed prospectively in larger samples and amongst different populations but reiterate the importance of sleep habits pertaining to mental health
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