41,762 research outputs found
Using performance assessment in secondary school mathematics: an empirical study in a Singapore classroom
No full textThis article reports an exploratory study on using performance assessment in mathematics instruction in a high-performing secondary school in Singapore. An intact mathematics class participated in the study, and received chapter-based performance tasks as intervention during regular mathematics lessons for about one and a half school years. The performance tasks used included authentic and/or open-ended tasks. The students’ academic achievements and attitudes in mathematics were compared with a comparison class that did not receive the intervention. Both quantitative and qualitative data were collected, mainly through questionnaire surveys, performance task tests, conventional school exams, and interviews with students and teachers. The results suggest that the students receiving the intervention performed significantly better than their counterparts in solving conventional exam problems, and in general they also showed more positive changes in attitudes towards mathematics and mathematics learning. The students from the experimental class also expressed positive views about the benefits of using performance tasks in promoting their ability in higher order thinking, though no statistically significant difference was detected between the two classes of students in solving unconventional tasks before and after intervention. Overall, the results appear to support teachers’ using contextualised problems in real life situations and open-ended investigations in students’ learning of mathematic
Richardson, Barbauld, and the construction of an early modern fan club
No full textMPhilMuch has been written about the life and long works of the eighteenth century epistolary novelist, Samuel Richardson, but the prospect of his position as the first celebrity novelist – responsible for courting his own fame as well as initiating his own fan club – has largely been ignored. The body of manuscripts housed at the National Art Library in the Victoria and Albert Museum in London provides the modern scholar with evidence of the skeletal beginnings of an early fan club. This thesis aims to show how these manuscripts were turned into a saleable commodity by the publisher and entrepreneur Richard Phillips, while under the guiding hand of another, slightly later, literary celebrity, Anna Laetitia Barbauld. In order to restore Richardson’s reputation amongst a new nineteenth century audience, Barbauld was required to construct her own idea of him as an eighteenth century celebrity author, and in doing so the insecurities of a self-professed, apparently diffident man, are revealed. Barbauld’s capacious, but heavily edited selection of letters is analyzed in this thesis, providing ample evidence that Richardson’s correspondents were more than just eager letter writers. By using Barbauld’s biography of Richardson this thesis aims to show how she manipulates the genre of life writing in her construction of him.
This thesis offers an alternative reading of how the Richardson manuscripts are viewed, redefining them as not simply a collection of letters, but as a collective entity, deliberately selected and archived as evidence of an early modern fan club, and its celebrity managing director
Development of a rotor model for the numerical simulation of helicopter exterior flow-fields
No full textIncludes bibliographical references (leaves 84-85).A numerical methodology is developed to model the effect of a rotor on the surrounding flow-field. The model calculates the time-averaged aerodynamic forces exerted on the air by the fan blades within the blade-swept region, and permits the user to specify blade properties such as cross-sectional profile and orientation at a particular radial and azimuthal location. The calculated forces are included as source terms within the Reynolds-averaged Navier-Stokes equations for an incompressible fluid, which are solved by the commercial CFD solver, FLUENT. The effects of turbulence are incorporated through the use of Launder and Spalding's k-g turbulence model. This method is selected as being the most efficient use of the resources available, giving the economic advantages of a steady simulation, while allowing radial and azimuthal variations of rotor characteristics. In order to validate the accuracy of the numerical model for both aligned and non-aligned inflow conditions, results are compared with experimental data reported for an axial flow fan. Agreement between experimental and numerical results is excellent to good. Fan static pressure rise is closely predicted by the numerical solution, while fan power consumption and fan static efficiency are under and over-predicted respectively. This error may be attributed to frictional losses not accounted for in the numerical model. These include physical rotational instabilities, leading to increased mechanical losses, and tip effects due to the clearance between the fan blade tips and the fan casing. Trends are nevertheless consistently predicted by the numerical model for inflow angles up to 45°, and for the range of blade pitch settings used. The adverse effect of off-axis inflow on the fan static pressure rise is numerically predicted, while fan power consumption is found to remain independent of inflow angle, as had been experimentally observed. The rotor model is finally integrated with the fuselage of the CIRSTEL (Combined Infra-Red Suppression and Tail rotor Elimination) prototype in an analysis of the helicopter exterior flow-field. No experimental data for this configuration was available for validation purposes. However, the model is used in the simulation of several common helicopter flight conditions. Results are presented graphically, and generally indicate good agreement with physically observed phenomena
Going beyond on-pitch success: fan engagement as a catalyst for growth
No full textThis research investigates the case of fan engagement as a strategy for long-term growth for football clubs. Through an exploratory methodology this study gains a
valuable insight into the current perceptions and usage of fan engagement, with a particular focus on social media.
Whilst the subject of social media is
growing in academic journals, there is very
little understanding of how sport organisations are
using this platform. 14 semi-structured interviews with key industry personnel and a fan focus group in addition to a content analysis of the Twitter feeds of 10 Premier
League football clubs was undertaken to offer new insight to the academic conversation in this subject area. The research findings suggest that
clubs need to develop ways to build and create long-term loyalty through fan engagement in
preference to unsustainable growth strategies based exclusively on winning and on-pitch performance.
Since winning is only possible for a select few every season, a strategy that places the fan at the centre of the club will prove beneficial to most clubs at all levels in the long term.
With the incoming financial controls being
implemented across the English football leagues in addition to UEFA’s Financial Fair Play legislation, the
significance of developing long-term profitability has never been more evident.
Those clubs which place Customer Relationship Management (CRM) as an overriding philosophy throughout the organisation and develop social media platforms effectively as part of a CRM strategy are best placed to improve their
understanding of fans and adapt their marketing strategies
to build loyalty and advocacy to the brand, which in time will deliver profitability and long-term growth
Focus on Safety and Security piece on how to protect customer information from
No full textFocus on Safety and Security piece on how to protect customer information from competitors, by attorney Lin Fan, of Bernstein Shur in Portland. With details on what constitutes a legally protected trade secret, and how to protect customer information from employee misuse
New damselfly hosts and species identification of an aquatic parasitoid Hydrophylita emporos (Hymenoptera: Trichogrammatidae) in Taiwan
No full textLin, Chun-Yu, Hsu, Yu-Hsun, Wang, Jo-Fan, Lin, Chung-Ping (2019): New damselfly hosts and species identification of an aquatic parasitoid Hydrophylita emporos (Hymenoptera: Trichogrammatidae) in Taiwan. Journal of Natural History 53 (35): 2195-2205, DOI: 10.1080/00222933.2019.169471
Fan Fiction and Copyright: Outsider Works and Intellectual Property Protection
No full textAs long as there have been fans, there has been fan fiction. There seems to be a fundamental human need to tell additional stories about the characters after the book, series, play or movie is over. But developments in information technology and copyright law have put these fan stories at risk of collision with the content owners’ intellectual property rights. Fan fiction has long been a nearly invisible form of outsider art, but over the past decade it has grown exponentially in volume and in legal importance. Because of its nature, authorship, and underground status, fan fiction stands at an intersection of key issues regarding property, sexuality, and gender. In Fan Fiction and Copyright, author Aaron Schwabach examines various types of fan-created content and asks whether and to what extent they are protected from liability for copyright infringement. Professor Schwabach discusses examples of original and fan works from a wide range of media, genres, and cultures. From Sherlock Holmes to Harry Potter, fictional characters, their authors, and their fans are sympathetically yet realistically assessed. Fan Fiction and Copyright looks closely at examples of three categories of disputes between authors and their fans: Disputes over the fans’ use of copyrighted characters, disputes over online publication of fiction resembling copyright work, and in the case of J.K. Rowling and a fansite webmaster, a dispute over the compiling of a reference work detailing an author's fictional universe. Offering more thorough coverage of many such controversies than has ever been available elsewhere, and discussing fan works from the United States, Brazil, China, India, Russia, and elsewhere, Fan Fiction and Copyright advances the understanding of fan fiction as transformative use and points the way toward a safe harbor\u9d for fan fiction
Learning of algorithms: a theoretical model with focus on cognitive development
No full textTaking a broad perspective on algorithm in mathematics, the author presents a theoretical model about the learning and teaching of algorithm with focus on students’ cognitive development. The model consists of three cognitive levels: 1. Knowledge and Skills, 2. Understanding and Comprehension, and 3. Evaluation and Construction. The model suggests that teaching and learning of algorithm does not simply mean routine learning, memorization, or lead to a low level of cognition. The paper also discusses different teaching strategies and activities that can be used to support students’ cognitive development at different cognitive levels
Final Report: Characterization of Hexavalent Chromium Concentrations in Household Dust in Background Areas
No full textThe current study was originally designed as an adjunct to the HCC study (Hudson County/Jersey City Chromium project, NJDEP study SR-06-027) in Jersey City, Hudson County, New Jersey to characterize hexavalent chromium [Cr(VI)] concentrations in house dust. It was originally assumed that with the remediation of nearly all COPR sites in Jersey City and, given data from studies in the 1990's showing that following remediation of these sites, total Cr levels in house dust returned to background levels, that little or no Cr(VI) would be found in the house dust. However, Cr(VI) was, in fact, found nearly ubiquitously among the homes samples throughout Jersey City, albeit at low levels. This raised a question of the source of the Cr(VI) that was found in Jersey City homes.Prepared by Zhi-Hua (Tina) Fan, PhD, Stuart Shalat, Sc.D., Chang-Ho Yu, Ph.D., Kathy Black, Ph.D. Lin Lin, Ph.D., UMDNJ-Robert Wood Johnson Medical School and Environmental and Occupational Health Sciences Institute and submitted to Dr. Alan Stern, NJDEP Division of Science and ResearchPurpose: To provide data about CORP in Hudson Count
[[alternative]]Validating Four Static Balance Tests by A Force Platform System
No full text[[abstract]]Validating Four Static Balance Tests by A Force Plateform System
Yi-Min Fan Chiang
Advisor: Jung-Charng Lin, Ph.D.
Abstract
The purpose of the study was to compare four tests of static balance with force platform test (two-leg stance test). Fifty male university students (average age = 21.26±2.42 years old) were recruited in this study with balance-order testing sequence. Repeated-measurement and one-way ANOVA were used to identify the differences among tests. Subjects participated in five tests, including force platform test (two-leg stance test), one-leg stance test (eyes-closed), Bass stick test-lengthwise, Bass stick test-crosswise and Stork stand test. The results of Pearson’s moment product correlation are as follows:
(1) One-leg stance test was highly correlated with two-leg stance test (r = 0.864, 0.757), no matter being evaluated with time-counting or in force platform.
(2) Stork stand test also was highly correlated with two-legs stance
Test (r = 0.775, 0.644). Therefore Stork stand test also can
measure individual static balance ability.
(3) Bass stick test-lengthwise and Bass stick test-crosswise were less
correlated with two-legs stance test（r = 0.269, -0.345, 0.356, -0.432）.
Therefore Bass stick test-lengthwise and Bass stick test-crosswise
were not as suitable as other two tests in measuring individual static
balance ability.
These results indicated that one-leg stance test (eyes-closed) is the most valid test in measuring individual static balance.
Key words: static balance ability, static balance test
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