http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.
변환된 중국어를 복사하여 사용하시면 됩니다.
Commercial vs Free E-resources for English Language Teachers
Barry Natusch 한국멀티미디어언어교육학회 2004 멀티미디어 언어교육 Vol.7 No.1
Natusch, Barry. (2004). Commercial vs Free E-resources for English Language Teachers. Multimedia-Assisted Language Learning, 7(1), xx∼xx. The issue of paid-for and free services in an information and communication context is receiving a lot of attention recently, particularly with the publicity surrounding notions of intellectual property and piracy. Definitions of commercial, shareware and freeware are discussed. A selection of commercial and free e-resources for teaching, administrating and researching useful for English teachers is presented and their respective strengths and weaknesses highlighted. The survey concludes by showing that trends emerging among commercial and free ELT resources suggest that while many mainstream applications are freely or cheaply obtainable, certain specialist items are still only available through commercial channels.
Indoor Channel Characteristics for Visible Light Communications
Kwonhyung Lee,Hyuncheol Park,Barry, J R IEEE 2011 IEEE communications letters Vol.15 No.2
<P>In this letter, we present indoor multipath dispersion characteristics for visible light communications (VLC). Since the VLC uses a wide spectrum between 380 nm and 780 nm, the conventional narrowband model for infrared may not apply. We generalize the Barry's model by including wavelength-dependent white LED characteristics and spectral reflectance of indoor reflectors. We perform a computer simulation to compare the power delay profile of the VLC with that of infrared communications. From our studies, we show that the VLC provides a larger transmission bandwidth than infrared communications.</P>
Spherical and spheroidal fullerenes entering carbon nanotubes
Barry J. Cox,Ngamta Thamwattana,James M. Hill 한국물리학회 2008 Current Applied Physics Vol.8 No.3,4
A continuous model of a fullerene inside a carbon nanotube and for which both the fullerene and carbon nanotube are treated assmooth surfaces with uniform atomic number densities and the van der Waals interaction is formulated using a 612 Lennard-Jonespotential. From the model we derive acceptance conditions and suction energies for C60,C70 and C80 fullerenes. We show that for thesesystems where the fullerenes are not accepted by the nanotube, then the suction energy is particularly sensitive to the equatorial semi-axislengthb. Alternatively, when the nanotube does accept the fullerene then an approximately equal suction energy per atom is obtained forall the fullerene types with little or no sensitivity to change in the equatorial semi-axis length. The analysis is given for the spherical ful-lerene C60 for which good agreement with molecular dynamics studies is obtained and it is repeated for C70 and C80 fullerenes using aself-consistent solution.
International Perspectives on Korean Educational Achievements
Barry McGaw 한국교육개발원 2005 KEDI Journal of Educational Policy Vol.2 No.2
Korea values education. Among OECD countries, it has the highest participation rate in upper secondary education and among the highest in tertiary education and it commits the highest percentage of GDP to expenditure on education. Its 15-year-olds are the best in the world in mathematics and problem solving and close to the best in science and reading literacy. Korea’s results are also equitable in the sense that overall differences in social background are not strongly related to differences in educational achievement, though there are marked differences among schools in the social background of students enrolled. In achieving these results, however, young Koreans spend a great deal of their lives on school work, in and out of school. A key issue is whether Korean young people could spend more time in other childhood activities while maintaining their high-quality outcomes, as their counterparts in some other countries do.