Home About us Contact
|
Home About us Contact | ||
|
|
||
Practical Work (practical + work)
Selected AbstractsHypervideo application on an experimental control system as an approach to educationCOMPUTER APPLICATIONS IN ENGINEERING EDUCATION, Issue 1 2008Debevc, Matja Abstract Hypervideo, as an interactive tool with links within video frames, is becoming widely used in multimedia presentations for e-learning applications. Its concept of rich multimedia presentation together with temporal based link objects, gives a chance for use in engineering education courses, where many practical work and experiments are needed. In the article we present a strategy for the development and navigation of hypervideo application, to be used in engineering education. Example of magnetic suspension system experiment was built as hypervideo application. The system usability was tested with two methods, software usability measurement inventory (SUMI) evaluation and general approach to usability engineering. Test results have shown that hypervideo increases the users' motivation to work and helps students recognize, organize and present specific information. By applying some of the proposed improvements in future development, hypervideo could be a significant tool in the future of engineering education. © 2008 Wiley Periodicals, Inc. Comput Appl Eng Educ 16: 31,44, 2008; Published online in Wiley InterScience (www.interscience.wiley.com); DOI 10.1002/cae.20116 [source] Risk-Taking Incentives: A Review of the LiteratureJOURNAL OF ECONOMIC SURVEYS, Issue 1 2005Richard Windram Abstract., Incentive structures affect people's decisions. But what are the implications of the resulting choices that people make for the level of risk within the economy? This paper reviews the literature in this area and attempts to draw out practical work that can be taken forward in assessing risk-taking incentives in the UK. Understanding the principal,agent problem is key to explaining many of the incentive structures that emerge. The paper provides an exposition of this before considering its implications in the managerial and financial markets. Within both these markets the paper considers how incentive structures alter principals' behaviour, before considering possible solutions to the common problem of asymmetric information. The paper concludes that the implications for risk-taking are unclear, as incentive structures can lead to both increased and decreased risk-taking. It therefore makes a number of suggestions for future research into the effect of incentive structures in existence in the UK. [source] Learner error, affectual stimulation, and conceptual changeJOURNAL OF RESEARCH IN SCIENCE TEACHING, Issue 2 2010Michael Allen Abstract Pupils' expectation-related errors oppose the development of an appropriate scientific attitude towards empirical evidence and the learning of accepted science content, representing a hitherto neglected area of research in science education. In spite of these apparent drawbacks, a pedagogy is described that encourages pupils to allow their biases to improperly influence data collection and interpretation during practical work, in order to provoke emotional responses and subsequent engagement with the science. The usefulness of this approach is borne out quantitatively by findings from a series of three randomized experiments (n,=,158) which show superior gains using this pedagogy that are still significant 2 and 3 years after the initial treatment. In addition, pupils who experienced more intense emotions during treatment demonstrated the most gains after 6 weeks. This research is one element of a large-scale study of expectation-related observation in school science whose findings impact generally on the proper consideration of empirical evidence and the learning of science content. © 2009 Wiley Periodicals, Inc. J Res Sci Teach 47:151,173, 2010 [source] Development and application of a two-tier multiple choice diagnostic instrument to assess high school students' understanding of inorganic chemistry qualitative analysis,JOURNAL OF RESEARCH IN SCIENCE TEACHING, Issue 4 2002Kim Chwee Daniel Tan This article describes the development and application of a two-tier multiple choice diagnostic instrument to assess high school students' understanding of inorganic chemistry qualitative analysis. The development of the diagnostic instrument was guided by the framework outlined by Treagust. The instrument was administered to 915 Grade 10 students (15 to 17 years old) from 11 schools after they had learned the theory involved in qualitative analysis and after a series of qualitative analysis practical sessions. The Cronbach alpha reliability of the instrument was .68, the facility indices ranged from .17 to .48, and the discrimination indices ranged from .20 to .53. The study showed that the Grade 10 students had difficulty understanding the reactions involved in the identification of cations and anions, for example, double decomposition reactions, the formation and reaction of complex salts, and thermal decomposition. The findings of the study and literature on practical work were used to develop a qualitative analysis teaching package. © 2002 Wiley Periodicals Inc. J Res Sci Teach 39: 283,301, 2002 [source] The scope, motivation and dynamic of Guest EngineeringR & D MANAGEMENT, Issue 4 2001Michael Lewis The exchange of technical personnel between organizational actors in a supply network has become known as Guest Engineering (GE). Despite increasing popularity as an inter-organisational arrangement (especially in the automotive sector) it has generated relatively little academic research and therefore this paper seeks to extend our understanding of GE by exploring how its scope is determined, what motivates the participants and how the relationships evolve. The paper draws on extant GE, supply networks and Resource-Based View (RBV) literature to derive research propositions that are used to analyse empirical work carried out with four automotive suppliers and four automotive OEMs. A number of preliminary conclusions are drawn. At a micro-project level, the criticality of the individual ,playing the GE role' is highlighted, as are related concerns that collaborative team structures often fail to address broader social/cultural characteristics. At a macro-project level, the study argues that difficulties and mistrust will often characterise integrated and competitively successful GE relationships. Finally, at a strategic level, GE needs to be understood as a process of resource transfer and transformation, and therefore the management of interdependency and power asymmetry are core considerations in effective adoption. The paper concludes with recommendations for further critical and practical work. [source] Zur maßgebenden Verkehrslaststellung bei SchrägseilbrückenBAUTECHNIK, Issue 4 2004Harald Unterweger ao. Als Grundlage der Bemessung erfordert die Systemberechnung im Brükkenbau auch die Auffindung der ungünstigsten Verkehrslaststellung für jeden betrachteten Brückenquerschnitt. Insbesondere beim Fahrbahnbalken von Schrägseilbrücken ergibt sich die Gesamtbeanspruchung aus einem komplexen Zusammenwirken aus Normalkräften, Querkräften und Biegemomenten. In der Praxis erfolgt üblicherweise eine Selektion jener Verkehrslaststellungen, die eine der Teil beanspruchungen am Querschnitt (meist ausgedrückt durch Schnittkräfte) maximieren, wodurch jedoch für die nachfolgend betrachteten Stahl- bzw. Verbundbrücken nicht immer die höchsten Beanspruchungen entstehen. Einleitend erfolgt die Darstellung eines einfachen und anschaulichen Verfahrens, um , unabhängig von der Komplexität der Grenzzustandsfunktion, die auch das Beulen des Hauptträgerstegs beinhalten kann , die ungünstigste Verkehrslaststellung am Querschnitt zu finden. Dies stellt eine Verallgemeinerung des in [1] vorgestellten Verfahrens dar. Der Hauptteil beinhaltet ein Anwendungsbeispiel einer Schrägseilbrücke mit Verbundquerschnitt, wobei zwei repräsentative Fahrbahnquerschnitte näher untersucht werden. Einerseits werden die Gesamtbeanspruchungen der konventionellen und der genauen Vorgehensweise anhand von Einflußlinien erläutert, und andererseits lassen sich daraus Hinweise für die Praxis ableiten. Die dargestellte ingenieurmäßige Vorgehensweise kann alle Arten der Einwirkungen beinhalten und ist grundsätzlich auch auf andere Bauwerke sowie Baustoffe (z. B. Stahlbeton) direkt anwendbar. Appropriate traffic load cases for steel and composite cable , stayed bridges. A significant problem in the global analysis of bridge structures is to find the most unfavourable position of the traffic loads for each cross-section. In practice usually those traffic load cases are chosen which maximise one part of stresses at the cross-section (often expressed in form of internal forces). First of all a simple method is presented to find out the most unfavourable traffic load position, also applicable for complex interaction formulae including web buckling. Secondly an example of a cable-stayed bridge is analysed. For two significant sections of the bridge deck the results are presented. The stresses due to the conventional practical procedure are compared with the more accurate ones. The behaviour is explained by the corresponding influence lines. Based on these results some proposals for practical work are given. The presented procedure is also applicable to other types of construction works and materials (e.g. reinforced concrete). [source] Liposomes as tools to study drug diffusion and toxin-induced leaksBIOCHEMISTRY AND MOLECULAR BIOLOGY EDUCATION, Issue 2 2002Florence Levillain Multilayered vesicles made of egg-phosphatidylcholine and of phosphatidic acid were used to teach in a 4-h session of practical work with a low cost spectrophotometer how to determine osmolarity inside multilayered vesicles and to show, by using two anti-tuberculous drugs (isonicotinic acid hydrazide, p -aminosalicylate), that a small and non-ionized molecule diffused freely through phospholipid vesicles, whereas a charged one did not. In addition, the permeabilizing effect of melittin, a membrane-targeted bee-venom toxin, was tested. [source] | ||||||||||||||||