Home About us Contact
|
Home About us Contact | ||
|
|
||
Main Emphasis (main + emphasis)
Selected AbstractsTraining scenario prototyping for VR-based simulation of neonatal decision-makingCOMPUTER APPLICATIONS IN ENGINEERING EDUCATION, Issue 4 2007A. Holobar Abstract This paper presents the design and implementation of a real-time system for virtual reality (VR)-based training in neonatal medicine, with main emphasis on simple creation of various training scenarios. This system combines an articulated 3D model of a virtual newborn with text-based descriptions of its physiological and behavioral responses, enabling medical experts to easily construct, simulate and revise an arbitrary postnatal critical situation. Afterwards, the resulting descriptions of newborn's behavior can be used for technical specifications (and even for automatic generation) of more complex behavioral models, such as finite-state automata. © 2007 wiley Periodicals, Inc. Comput Appl Eng Educ 15: 317,328, 2007; Published online in Wiley InterScience (www.interscience.wiley.com); DOI 10.1002/cae.20121 [source] The Development of Enantioselective Rhodium-Catalysed Hydroboration of OlefinsADVANCED SYNTHESIS & CATALYSIS (PREVIOUSLY: JOURNAL FUER PRAKTISCHE CHEMIE), Issue 5 2005Anne-Marie Carroll Abstract Rhodium-catalysed enantioselective hydroboration of olefins is a valuable synthetic transformation, typically employing a chiral catalyst and an achiral borane source. The pertinent chemo-, regio- and enantioselectivity issues of this reaction are discussed. However, the main emphasis of this review is on the evolution of catalytic asymmetric hydroboration. This has primarily relied upon the development and application of chiral bidentate P,P and P,N ligands which have exhibited varying degrees of success in this transformation. [source] The Elusive Underpinnings of U.S. Venturesomeness (If Not Prosperity),JOURNAL OF APPLIED CORPORATE FINANCE, Issue 2 2009Amar Bhidé This article explores the question of how the U.S. economy has managed to maintain (or even increase) its lead over other nations in per capita income and the average productivity of its workforce. The answer provided in the author's recent book is that such productivity depends on the greater willingness and effectiveness of U.S. consumers and businesses in making use of innovations in products and business processes. But this begs the question: What accounts for the increase in the innovative capabilities or effectiveness of U.S. consumers and businesses, both over time and relative to that of their global counterparts? After starting with the conventional "supply-side" focus on low taxes, limited regulatory barriers, and strong property rights, the author goes on to shift the main emphasis to the following six "institutional" contributors to U.S. prosperity: ,Breadth of participation: the modern U.S. economy draws, to a greater extent than either its global competitors or the U.S. of a century ago, on the contributions of far more individuals both as developers and as users of new products. ,Organizational diversity and specialization: the evolution of new forms of organization in the U.S., from small venture capital-backed firms to huge public corporations with dispersed ownership, has enabled the system to use the contributions of many individuals more effectively. ,Changes in common beliefs and attitudes: greater receptiveness to technological change has accelerated the adoption of new products in all countries, but especially in the U.S. ,Increased pressure for growth: the "grow or die" imperative faced by U.S. businesses has encouraged them to look for help from new technologies. ,The professionalization of management and sales functions,a distinctively U.S. phenomenon whose beginnings can be traced to IBM in the 1920s,has improved the capacity of modern U.S. organizations to develop markets and use new products. ,The expansion of higher education, to a far greater extent in the U.S. than elsewhere, has increased the supply of individuals with habits and attitudes that improve their ability to develop and use innovations. [source] Microbial production, immobilization and applications of ,- D -galactosidaseJOURNAL OF CHEMICAL TECHNOLOGY & BIOTECHNOLOGY, Issue 4 2006Parmjit S Panesar Abstract ,- D -Galactosidase (,- D -galactoside galactohydrolase, E.C. 3.2.1.23), most commonly known as lactase, is one of the most important enzymes used in food processing, which catalyses the hydrolysis of lactose to its constituent monosaccharides, glucose and galactose. The enzyme has been isolated and purified from a wide range of microorganisms but most commonly used ,- D -galactosidases are derived from yeasts and fungal sources. The major difference between yeast and fungal enzyme is the optimum pH for lactose hydrolysis. The application of ,- D -galactosidase for lactose hydrolysis in milk and whey offers nutritional, technological and environmental applications to human life. In this review, the main emphasis has been given to elaborate the various techniques used in recent times for the production, purification, immobilization and applications of ,- D -galactosidase. Copyright © 2006 Society of Chemical Industry [source] Calculation of off-resonance Raman scattering intensities with parametric modelsJOURNAL OF RAMAN SPECTROSCOPY, Issue 12 2009Daniel Bougeard Abstract The paper reviews applications of parametric models for calculations of the Raman scattering intensity of materials with the main emphasis on the performance of the bond polarizability model. The use of the model in studies of polymers, aluminosilicates, and nanostructures is discussed and the existing sets of electro-optical parameters as well as their transferability are analyzed. The paper highlights the interplay between the first-principles and parametric approaches to the Raman intensity calculations and suggests further developments in this field. Copyright © 2009 John Wiley & Sons, Ltd. [source] Enhancing the quality of argumentation in school scienceJOURNAL OF RESEARCH IN SCIENCE TEACHING, Issue 10 2004Jonathan Osborne The research reported in this study focuses on the design and evaluation of learning environments that support the teaching and learning of argumentation in a scientific context. The research took place over 2 years, between 1999 and 2001, in junior high schools in the greater London area. The research was conducted in two phases. In phase 1, working with a group of 12 science teachers, the main emphasis was to develop sets of materials and strategies to support argumentation in the classroom, and to support and assess teachers' development with teaching argumentation. Data were collected by video- and audio-recording the teachers' attempts to implement these lessons at the beginning and end of the year. During this phase, analytical tools for evaluating the quality of argumentation were developed based on Toulmin's argument pattern. Analysis of the data shows that there was significant development in the majority of teachers use of argumentation across the year. Results indicate that the pattern of use of argumentation is teacher-specific, as is the nature of the change. In phase 2 of the project, the focus of this paper, teachers taught the experimental groups a minimum of nine lessons which involved socioscientific or scientific argumentation. In addition, these teachers taught similar lessons to a comparison group at the beginning and end of the year. The purpose of this research was to assess the progression in student capabilities with argumentation. For this purpose, data were collected from 33 lessons by video-taping two groups of four students in each class engaging in argumentation. Using a framework for evaluating the nature of the discourse and its quality developed from Toulmin's argument pattern, the findings show that there was improvement in the quality of students' argumentation. This research presents new methodological developments for work in this field. © 2004 Wiley Periodicals, Inc. J Res Sci Teach 41: 994,1020, 2004 [source] Photoinduced structural dynamics of polar solids studied by femtosecond X-ray diffractionACTA CRYSTALLOGRAPHICA SECTION A, Issue 2 2010Thomas Elsaesser Femtosecond X-ray diffraction allows for real-time mapping of structural changes in condensed matter on atomic length and timescales. Sequences of diffraction patterns provide both transient geometries and charge-density maps of crystalline materials. This article reviews recent progress in this field, the main emphasis being on experimental work done with laser-driven hard X-ray sources. Both Bragg diffraction techniques for bulk and nanostructured single crystals as well as the recently implemented powder diffraction from polycrystalline samples are discussed. In ferroelectric superlattice structures, coherent phonon motions and the driving stress mechanisms are observed in real time. In molecular crystals charge-transfer processes and the concomitant changes of the lattice geometry are analyzed. [source] Reversing spontaneous succession to protect high-value vegetation: Assessment of two Scottish mires using rapid survey techniquesAPPLIED VEGETATION SCIENCE, Issue 1 2001Andrew R.G. Large Abstract. Despite existing management agreements, significant change has occurred on Carnwath Moss and Coladoir Bog, two mire complexes in central and western Scotland. Spontaneous succession has accelerated, resulting in extensive degradation of the mire vegetation on both sites and, in particular, widespread expansion of Calluna vulgaris - and Molinia caerulea -dominated vegetation types. Vegetation surveys across strong gradients of change were conducted with the aim of quantifying the extent of early (desirable) and late (undesirable) successional vegetation on both sites. For each site multivariate analyses of the vegetation data were carried out using TWINSPAN, which clearly differentiated higher quality and degraded surfaces. In management terms percentage Sphagnum cover can act as a useful proxy measure of water level and shrub layer height can also serve as a useful indicator of the degree of degradation. A broad-based, five class condition continuum was developed for the Carnwath Moss site. While such an assessment scheme is a somewhat arbitrary means of allocating mesotope areas to specific condition classes, it is rapid to apply and simple enough to be applied by a range of users. A drawback is that the methodology is data-light in temporal terms and is not a long-term substitute for properly-funded monitoring programmes for important sites. For both mires, recommendations are made for management with the main emphasis being on maintaining water tables at appropriate levels to maximise the floristic diversity of active mires. [source] | ||||||||||