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21.
Vasant Natarajan 《Resonance》2013,18(6):522-529
The 2012 Nobel Prize in Physics has been awarded jointly to Serge Haroche and David J Wineland “for ground-breaking experimental methods that enable measuring and manipulation of individual quantum systems”. In this article, we discuss how the experiments of the two Laureates have taught us how to study single quantum particles — using photons to study single atoms in the case of Wineland, and using atoms to study single photons in the case of Haroche. Their work may some day lead to a superfast quantum computer. 相似文献
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Varun Saxena Pradeep Natarajan Patricia S. O'Sullivan Sharad Jain 《Anatomical sciences education》2008,1(4):159-165
Medical schools have reduced the time allotted to anatomy instruction. Consequently, schools engage students in more independent settings using information and communication technologies (ICT). There has been limited research in the use of video aids, a type of ICT, to enhance anatomy examination performance. The objective of this study is to describe the design, usage, and effect on examination performance of eight locally developed instructional anatomy videos. First‐year UCSF medical students (n = 141) had access to the videos. They reported their video usage, reason for usage, and satisfaction. The prior year students (n = 141) served as a historical control group. Anatomy and radiology examination performance was compared between groups while controlling for prior performance. The students with and without access to the videos did not differ in examination performance. Sixty‐one (43%) students in the experimental group responded to the survey. Of these, 79% reported using at least one video, viewing an average of 4.75 of the eight videos. They watched 3.27 (SD = 1.57, range 1–5) of the five anatomy videos and 1.48 (SD = 1.35; range 0–3) of the three radiology videos. In a regression analysis controlling for age and MCAT scores, using the anatomy videos at least once improved anatomy examination performance by 3.4% (P‐value = 0.007). There was no relationship between radiology video usage and radiology exam score. Video resource availability did not enhance student performance in anatomy and radiology. However, when analyzing performance for those whom we knew level of video use, there was a statistically different and higher anatomy achievement. Anat Sci Ed, 2008. © 2008 American Association of Anatomists. 相似文献
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Vasant Natarajan 《Resonance》2002,7(1):23-30
This year’s Nobel Prize in Physics has been jointly awarded to Eric A Cornell of the National Institute of Standards and Technology,
Boulder (USA), Wolfgang Ketterle of the Massachusetts Institute of Technology, Cambridge (USA), and Carl E Wieman of the University
of Colorado, Boulder (USA). They have been cited “for the achievement of Bose-Einstein condensation in dilute gases of alkali
atoms, and for early fundamental studies of the properties of the condensates”. The scientists have been recognized for their
pioneering work in a field that has grown explosively around the world in the past few years. Though the phenomenon of Bose-Einstein
condensation (BEC) was predicted by Einstein in 1925 (based on the new statistics of Bose), it was observed only in 1995.
In this article, we review the basic physics behind the phenomenon, the experimental techniques involved in achieving it,
and high-light some of the potential applications of condensates. 相似文献
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Vijay Natarajan 《Resonance》2013,18(7):615-629
Scientific visualization refers to the study and design of visual representation of data that arises in science and engineering disciplines. The aim of the visualization is the identification of patterns leading to a better understanding of the underlying phenomena. This article will briefly introduce this topic by first providing the motivation in the form of applications, next describing a couple of well-studied visualization methods and algorithms, outlining some of the current research challenges in this area, and finally presenting a summary of related ongoing research work IISc Bangalore. 相似文献
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