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Scorecard for 2016
Science had mixed success in picking areas to watch in 2016—gravitational waves, canine origins, and tests of Einstein's theory of gravity. How prescient were Science 's editors and writers when they picked three areas to watch in 2016, as part of the 2015 Breakthrough of the Year package? On gravitational waves, they were spot on: The detection of the infinitesimal ripples in spacetime became Science 's 2016 Breakthrough of the Year. The prediction that we may finally know where dogs came from was partially successful: A study indicated that they may have evolved from wolves once in Europe and once in Asia or the Near East. And the recommendation that we keep an eye on a French satellite, which will test whether falling bodies made of different materials accelerate at the same rate under Earth's gravity, is ongoing. The satellite is in the data-gathering phase.
Journal Article
Statement manicures dazzle in Olympic track and field
Since Florence Griffith Joyner, Olympic runners have used their fingernails to express their sense of style.
Streaming Video
Blade runner
\"Ridley Scott's Blade Runner is widely regarded as a \"masterpiece of modern cinema\" and is regularly ranked as one of the great films of all time. Set in a dystopian future where the line between human beings and 'replicants' is blurred, the film raises a host of philosophical questions from what it is to be human and to the nature of consciousness. This is the first book to explore and address these questions and more from a philosophical point of view. Beginning with a helpful introduction, specially commissioned chapters examine the following questions: - What is the relationship between emotion and reason and how successful is Blade Runner in depicting emotions? - Can we know what it is like to be a replicant? - What is the origin of personhood and what qualifies one as a person? - Does the style of Blade Runner have any philosophical significance? - To what extent is Blade Runner a meditation on the nature of film itself? Including a biography of the director and annotated further reading at the end of each chapter, Blade Runner is essential reading for students interested in philosophy and film studies\"-- Provided by publisher.
Book
Numerical Analysis of Traditional and Hooped Pelton Runner at Various Operating Conditions
Pelton turbine is an impulse turbine that converts kinetic energy of incoming jet of water into mechanical energy. Due to impingement of high-speed jet on buckets, Pelton turbine experience high stress at the tip of bucket and at the connection of bucket and rim. To provide the structural strength to the runner, a hoop is attached to it which allows better distribution of forces. However, the impact of hoop on the hydraulic performance of runner is important to assess. For this, a numerical analysis based on Computational Fluid Dynamics has been performed on both traditional and hooped Pelton runner. Transient analysis has been done to calculate the efficiency of both runners under same boundary conditions. The analysis was performed at different openings of needle. Numerical study showed that the efficiency of hooped Pelton runner is less compared to traditional Pelton runner at higher and medium openings. However, at lower openings hooped runner is more efficient. The efficiency drop was in the range of 3.56% to 1.25%. Flow contours reveal that obstruction of fluid is more prominent at higher opening than lower openings, which is the main reason for efficiency drop. Hoop, despite giving structural strength to the runner, is detrimental to the hydraulic performance of traditional runner.
Journal Article