three requirements for a valid solution to the critical section problem

Ngày tải lên: 07/09/2013, 13:19

... judgment, all words in the upper branch of the hierarchical tree are related to the hand sense of palm, and all other words are related to its tree sense. However, it is somewhat unsatis- factory ... even for practical purposes, we can not claim that our algorithm is capable of finding all the fine grained distinctions that are listed in manually created dictionaries such as the Longman ... vectors. To see this, let us bring our attention to the various species of ani- mals that are among the top 30 associations to poach. Some of them seem more often affected by cooking (pheasant,...

Ngày tải lên: 20/02/2014, 16:20

... vector comparisons. Fortunately, the problem of data sparseness can be minimized by reducing the dimensionality of the matrix. An appropriate alge- braic method that has the capability to reduce ... restrict the number of rows to a vocabulary appropriate for evaluation purposes. Since we are not aware of any standard vocabulary previously used in related work, we manually selected an ad hoc ... after adding one to each value in the matrix. 2 As usual, the one is added for smoothing purposes and to avoid problems with zero values. We de- cided not to use a sophisticated association meas- ure...

Ngày tải lên: 08/03/2014, 04:22

Ngày tải lên: 20/06/2014, 22:20

Ngày tải lên: 20/06/2014, 21:20

...

Ngày tải lên: 23/03/2014, 05:22

... percent, and the van der Waals force remains sufficient to hold the nanotube in place. The Lieber and Park group at Harvard have reported that the van der Waals force is sufficiently strong to hold ... is a micron-scale doubly clamped beam or cantilever clamped to the silicon oxide surface via van der Waals attraction (Fig. 5. 1A, 5.1D). 5.3 Device Characterization – AFM and Raman A non-contact ... Oscillator The harmonic oscillator is a classic well-studied system which describes everything from grandfather clocks and guitars to atoms and dark energy. Historically, it has played a pivotal...

Ngày tải lên: 24/03/2014, 05:20

... (whether undiagnosed or failing to adhere to treatment) is failure to thrive, malabsorption and persistent diarrhoea. Other symptoms include depression, abdominal pain, anaemia, arthritis, delayed ... available evidence for such a feature, 1 indicates partial evidence, and 2 indicates there was definitely evidence for such a feature in the study. A further adaptation was sorting of the categories ... editorials, letters, conference abstracts). Data extraction In order to ease extraction of information from papers, a data extraction form was used to note important study criteria (Appendix...

Ngày tải lên: 12/02/2014, 12:20

... preparation for donation to another metal-requiring apo-enzyme. A considerable amount of effort has been directed in the recent past to understanding the mechanism of metal ion donation to apo-Zn 2+ -requiring ... to that of Co 2+ . The fact that the equilibrium con- stants for the a domain are greater than those for the b domain may be a factor in explaining the observed metal ion distribution. After ... [24]. The fact that Cd 2+ has been shown to coordinate to the two-domain ba-MT in a domain-specific manner, with a preference for the a domain, has been construed as being an indicator of cooperative...

Ngày tải lên: 19/02/2014, 00:20

... lowers the total concentration of acetic acid in the process. Douglas Ray asked whether biobased approaches are going to scale. Emptage said that scaling in fermentation is straightforward, and ... by photosynthesis created by cyanobacteria grown on nonarable land and photovoltaics for electricity. Douglas Ray from Pacific Northwest Laboratories asked G. Tayhas Palmore whether the process ... means they gather about twice as many of the available photons, they are prob- ably more efficient at water oxidation than photosynthesis. Moore highlighted several projects at Arizona State Uni- versity...

Ngày tải lên: 19/02/2014, 09:20

...

Ngày tải lên: 08/03/2014, 15:20

... partially accessible to the solvent and m ay therefore act as a gate for the possible exit of a water- coordinated proton occurring at the extra-cytoplasmic end of the proton transfer path. Fig. ... build the atomic model of Neurospora crassa plasma membrane H + -ATPase, using as template the 2 .6 A ˚ crystal structure of rabbit sarcoplasmic reticulum C a 2+ -ATPase [Toyoshima, C., Nakasako, ... one. Identification of a putative proton pathway in Neurospora crassa H + -ATPase The chemiosmotic model for PMA1_NEUCR. In the P-type proton pumps, the origin of the transported proton as well as the proton...

Ngày tải lên: 23/03/2014, 21:20

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Ngày tải lên: 30/03/2014, 01:20

Ngày tải lên: 21/06/2014, 07:20

Ngày tải lên: 22/06/2014, 06:20

Ngày tải lên: 04/10/2012, 10:02

Ngày tải lên: 04/10/2012, 10:02

Ngày tải lên: 04/10/2012, 10:02