A computer-based method and system for establishing topic words to represent a document, the topic words being suitable for use in document retrieval. The method includes determining document keywords from the document; classifying each of the document keywords into one of a plurality of preestabli.....
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A family of new mechanical presses is invented. This type of presess is programmable (including its stroke, speed and acceleration) and energy-efficient (it uses a flywheel to ease the peak energy). Mechanically, it is a 2 degree-of-freedom punching mechanism driven by two different motors (a commo.....
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Osteoporosis, a silent disease, is a skeletal disorder characterized by compromised bone strength predisposing to an increased risk of fractures. The global burden of osteoporosis is significant nowadays – over 200 million people worldwide and approximately 30% of all postmenopausal women in the USA.....
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The invention makes the generation of a low frequency error clock source for backscatter link frequency possible. The power consumption of the invention is very low such that the reading distance of a passive transponder is not harmed. Also the clock calibration process continuously conducted in t.....
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Although the hardware on imaging has a significant development in the past decades, the dynamic range of light we can reproduce is still quite limited compared to that of the real world. Particularly, people are often troubled when taking a photograph by that: a picture is under or over-exposed. T.....
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