Space and time gift-wrapped
نویسندگان
چکیده
منابع مشابه
Covenant, Promise, and the Gift of Time
If we categorize religions according to whether they give greater prominence to time or to space, the role of “promise” marks a religion of covenant as clearly a religion of time. Yet the future is unknowable and can only be present to us as a field of possibilities. How far do these possibilities extend? The question directs us back to the nature of time, a question that became concealed in th...
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We propose a new space-time coding scheme for the quasi-static multiple-antenna channel with perfect channel state information at the receiver and no channel state information at the transmitter. The new scheme includes both trellis space-time codes and layered space-time codes as special cases. When the number of transmit antennas is not larger than the number of receive antennas our scheme ca...
متن کاملA Gift of Time
How would people spend time if confronted by permanent declines in market work? We identify preferences off exogenous cuts in legislated standard hours that raised employers’ overtime costs in Japan around 1990 and Korea in the early 2000s. Using time-diaries from before and after these shocks, we estimate the probability that an individual would have been affected by the reform. Reduced-form e...
متن کاملThe Gift of Time
Relativistic contractions and expansions based on what you are doing aside, the day is exactly 24 hours long. Given the time needed for sleeping and other biological necessities, there is approximately 14 hours per day that can be spent in work and communication. Therefore, one of the greatest gifts most of us can give to others is quality time to educate and inform and that is the meaning of t...
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We study the four dimensional effective action of a system of D6–branes wrapped on the K3 manifold times a torus, allowing the volume of the internal manifolds to remain dynamical. An unwrapped brane is at best a Dirac monopole of the dual R–R sector field to which it couples. After wrapping, a brane is expected to behave as a BPS monopole, where the Higgs vacuum expectation value is set by the...
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ژورنال
عنوان ژورنال: Nature
سال: 2007
ISSN: 0028-0836,1476-4687
DOI: 10.1038/450032a