Book reviews     

William W. Brickman  Willy Strzelewicz  William Taylor  Joachim H. Knoll  Mark Blaug  Oskar Anweiler  Andreas Fuchs  Gilda L. de Romero Brest  Alberto Aráoz  Wolfgang Brezinka  Enrique Oteiza  W. F. Connell  Robert J. Havighurst  Daniel F. Wozniak  Wolfgang Roth  Karl Frey  Alfons Otto Schorb 《International Review of Education/Internationale Zeitschrift für Erziehungswissenschaft/Revue internationale l'éducation》1970,16(2):221-249

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Process for the 3D virtual reconstruction of a microcultural heritage artifact obtained by synchrotron radiation CT technology using open source and free software     

Xi Zhang  Jorik Blaas  Charl Botha  Peter Reischig  Alberto Bravin  Joris Dik 《Journal of Cultural Heritage》2012,13(2):221-225

Computer tomography (CT) technology has greatly contributed to the feasibility and convenience of detecting and visualizing the internal material constitution and geometrical fabrication of museum artifacts. This paper presents a case study of 3D virtual reconstruction for the CT-acquisition-based study of a cultural heritage artifact. It documents the complete procedure, including the preprocessing, segmentation and visualization of the data by providing coarse interactive exploration and integrated high-quality renderings. A parallel aim achieved was to use open source tools and free software for segmentation and visualization, thus providing full transparency of the adopted methodology and 3D visualization methods, and a cost effective solution for ordinary CPU-based PC users. Furthermore, the challenges of the large data volumes involved have been addressed using preprocessing, a segmentation scheme and linked front-to-back management to keep interaction and high-quality rendering available, thus achieving corresponding demands.  相似文献   

Beyond Giving: Political Advocacy and Volunteer Behaviors of Public University Alumni     

David J. Weerts  Alberto F. Cabrera  Thomas Sanford 《Research in higher education》2010,51(4):346-365

College and university leaders have paid an enormous level of attention to one domain of alumni involvement: charitable giving. In light of the decline of state support for higher education and the shrinking ability of families to pay for college, such emphasis is understandable. However, this emphasis has blinded scholars and practitioners to understanding the important non-monetary support roles played by college alumni. Drawing on data from a research extensive university, this study employs a sequential mixed method design (focus groups and confirmatory factor analysis) to demonstrate that non-monetary support behaviors are best understood through the distinct, but interrelated domains of political advocacy and volunteerism. Political advocacy behaviors include contacting legislators, the governor’s office, local politicians and serving on a political action team, while volunteer behaviors include mentoring new alumni, recruiting students, and participating in special events. The study breaks ground for future research on alumni support for higher education, including strategies to recruit alumni volunteers and advocates.  相似文献   

Mechanical and EMG responses of the vastus lateralis and changes in biochemical variables to isokinetic exercise in endurance and power athletes     

Rainoldi A  Gazzoni M  Merletti R  Minetto MA 《Journal of sports sciences》2008,26(3):321-331

Twelve endurance athletes and six power athletes performed fatiguing isokinetic knee flexions/extensions. Isokinetic torque was recorded during the exercise. Isometric torque, cortisol and lactate responses, electromyographic (EMG) mean power frequency, average rectified value, and conduction velocity were analysed before and after the isokinetic exercise to determine correlations between electrophysiological variables and mechanical performances and/or blood concentrations of biomarkers in the two groups of athletes. The EMG variables were estimated from signals recorded from the vastus lateralis in both voluntary and electrically elicited isometric contractions. Power athletes recorded higher values than endurance athletes for the following variables: pre-exercise isometric maximal voluntary contraction (MVC), isokinetic MVC, rate of mechanical fatigue during isokinetic contractions, pre - post exercise variations and recovery times of conduction velocity and mean power frequency, and lactate concentrations. Moreover, conduction velocity overshooting was observed in endurance athletes during the recovery phase after exercise. The correlation analyses showed that the higher the rate of mechanical fatigue, the higher the lactate production and the reduction in conduction velocity due to the exercise.  相似文献   

The free-electron laser     

Alberto Renieri 《Endeavour》1984,8(1):35-43

The generation of coherent synchrotron radiation using beams of relativistic electrons passed through magnetic undulators opens up tremendous scope for photochemistry in general and isotopic separation by laser in particular. Applications for plasma heating in Tokamak-type installations to trigger off the controlled nuclear fusion process are also conceivable.  相似文献   

A novel Cervical Spine Protection device for reducing neck injuries in contact sports: design concepts and preliminary in vivo testing*     

Paolo Caravaggi  Alberto Leardini  Claudio Belvedere 《Sports biomechanics / International Society of Biomechanics in Sports》2020,19(3):382-394

Abstract

Head and neck injuries are common in contact sports such as American football. Different mechanisms can produce such injuries, including compressive impact forces on the crown of the helmet with the neck in a flexed chin-down position. The aim of this paper was developing and testing a novel Cervical Spine Protection Device (CSPD) designed to keep the neck within its safe physiological range. The cervical spine range of motion (ROM) of ten participants was measured under four conditions: free; wearing a football gear; wearing the CSPD; and wearing the CSPD underneath the gear. The CSPD was tested in terms of passive and active restraint of head motion, and for its capability to improve endurance time of the neck extensor muscles. Wearing the CSPD resulted in a significant 40–60% reduction in ROM across the three anatomical planes, and in increased endurance of the neck extensor muscles (FREE: 114 ± 57 s; CSPD: 214 ± 95 s; p = 0.004). In quasi-static loading conditions the CSPD was capable of keeping the neck within its physiological range, thus it may be used to decrease the risk of severe injuries due to dangerous chin-down positions.  相似文献   

Private Higher Education and Diversity: An Exploratory Survey     

Pedro Teixeira  & Alberto Amaral 《Higher Education Quarterly》2001,55(4):359-395

In this preliminary review, the authors analyse the effects of privatisation on diversity in higher education (HE) systems by exploring the consequences of the establishment of HE Institutions by non-public organisations. The rising importance of privatisation in Europe (Western and transitional economies), Latin America, and Southeast Asia is analysed. Then follows detailed examinations of private-sector HE in countries representative of all these geographical areas to determine how far privatisation has stimulated diversity. The preliminary results indicate that in each case the private sub-sector has promoted limited and partial diversification. In general, though, the more recent private establishments, created to satisfy increasing demand for HE, have nonetheless focused predominately on teaching, have undertaken little, or no, research and appear to be of lower quality than the older institutions. The private sub-sector is characterised mostly by its low-risk behaviour, and a concentration on low-cost and/or safer initiatives. Public authorities must share at least a partial responsibility for some of the negative side effects of the development of private higher education.  相似文献   

In Pursuit of a Filipino Counselor Development Model: A Life-Span Approach     

Nino Jose Mateo  Jose Alberto S. Reyes 《International journal for the advancement of counseling》2015,37(3):262-278

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Global Citizenship and Global Universities. The Age of Global Interdependence and Cosmopolitanism     

Carlos Alberto Torres 《European Journal of Education》2015,50(3):262-279

This article focuses on the role of global universities and globalisations in an age of global interdependence and cosmopolitanism. Competing agendas that result from actions and reactions to multiple globalisations are considered in relation to global citizenship education. These agendas are crucial in understanding dilemmas of the local and the global in relation to education. Key emerging agendas are highlighted, including those of the hyperglobalisers, skeptics and transformationists. Three themes are central for this conversation, namely a) how multiple globalisations are impacting global life and academics, b) how networks have become privileged sites for global education, and c) the implications of globalisation and networks for global citizenship and global universities.  相似文献   

The questionable inventions of the clever Dr. Einstein     

Alberto A. Martínez 《Metascience》2014,23(1):49-55

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