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31.
In the ultimatum game with complete information a Sender proposes a division of a given amount of surplus (“pie”), which a Receiver can either accept (payoffs are distributed according to the Sender's proposal) or reject (both players earn nothing). We study another version of the ultimatum game under incomplete informaton in which the pie is drawn randomly from a commonly known distribution, the Sender knows the exact size of the pie, but the Receiver only knows her share of the pie, not the residual share requested by the Sender. The basic results are that (1) as the support of the pie distribution increases in a mean-preserving spread, the Senders make lower offers that the Receivers are less likely to reject, (2) for a given support, Senders tend to offer a lower proportion of the pie to the Receivers as the pie size grows larger, and (3) although knowing only their share of the pie, Receivers estimate its size quite accurately. 相似文献
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The energy shift of relativistic H-like atom is calculated in second order by external field ε, and in the first order by hyperfine-structure interaction. The relativistic corrections to scalar and tensor polarizability are presented. 相似文献
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M. Rapoport 《Inventiones Mathematicae》1971,15(3):227-236
Sans résumé 相似文献
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V. L. Frolov V. O. Rapoport G. P. Komrakov A. S. Belov G. A. Markov M. Parrot J. L. Rauch E. V. Mishin 《JETP Letters》2008,88(12):790-794
The parameters of plasma disturbances at altitudes 660 and 840 km, measured by the instruments onboard the French DEMETER satellite and the US DMSP satellites passing through the magnetic flux tube footed at the region of intense modification of the F 2 ionospheric layer by the high-power HF radio waves of the Sura heating facility, are presented. The formation of artificial enhanced-density plasma ducts in the outer ionosphere is observed experimentally. Conditions facilitating the formation of such ducts are pointed out. 相似文献
38.
A new class of multifunctional nanoparticles that combine properties of polymeric drug carriers, ultrasound imaging contrast agents, and enhancers of ultrasound-mediated drug delivery has been developed. At room temperature, the developed systems comprise perfluorocarbon nanodroplets stabilized by the walls made of biodegradable block copolymers. Upon heating to physiological temperatures, the nanodroplets convert into nano/microbubbles. The phase state of the systems and bubble size may be controlled by the copolymer/perfluorocarbon volume ratio. Upon intravenous injections, a long-lasting, strong and selective ultrasound contrast is observed in the tumor volume indicating nanobubble extravasation through the defective tumor microvasculature, suggesting their coalescence into larger, highly echogenic microbubbles in the tumor tissue. Under the action of tumor-directed ultrasound, microbubbles cavitate and collapse resulting in a release of the encapsulated drug and dramatically enhanced intracellular drug uptake by the tumor cells. This effect is tumor-selective; no accumulation of echogenic microbubbles is observed in other organs. Effective chemotherapy of the MDA MB231 breast cancer tumors has been achieved using this technique. 相似文献
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Fyodor S. Kot Vladimir L. Rapoport Galina V. Kharitonova 《Central European Journal of Chemistry》2007,5(3):846-857
The results of the laboratory pot experiments on soil mercury (Hg) immobilisation with a non-toxic and price-reasonable agent
— colloidal sulphur (S) water suspension, are presented. It was shown that fertilisation with small agrochemical doses of
colloidal S reduces excess Hg effectively as follows: in interstitial waters by a factor 2 – 12 times for total Hg, and 22–
680 times for “reactive” Hg; in stems and leaves of oats – 7 – 22 times; and in moss bags, reflecting soil Hg degassing, 7
– 15 times, for the most heavily Hg-spiked soils. The results obtained allowed to conclude that the immobilization of Hg occurs
through Hg binding to the newly formed S-bearing functional groups in humic acids and/or sulphides.
相似文献
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