7,482 research outputs found
Equalitarian Societies are Economically Impossible
The inequality of wealth distribution is a universal phenomenon in the
civilized nations, and it is often imputed to the Matthew effect, that is, the
rich get richer and the poor get poorer. Some philosophers unjustified this
phenomenon and tried to put the human civilization upon the evenness of wealth.
Noticing the facts that 1) the emergence of the centralism is the starting
point of human civilization, i.e., people in a society were organized
hierarchically, 2) the inequality of wealth emerges simultaneously, this paper
proposes a wealth distribution model based on the hidden tree structure from
the viewpoint of complex network. This model considers the organized structure
of people in a society as a hidden tree, and the cooperations among human
beings as the transactions on the hidden tree, thereby explains the
distribution of wealth. This model shows that the scale-free phenomenon of
wealth distribution can be produced by the cascade controlling of human
society, that is, the inequality of wealth can parasitize in the social
organizations, such that any actions in eliminating the unequal wealth
distribution would lead to the destroy of social or economic structures,
resulting in the collapse of the economic system, therefore, would fail in
vain
The Effects of Minimal Length, Maximal Momentum and Minimal Momentum in Entropic Force
In this paper, the modified entropic force law is studied by using a new kind
of generalized uncertainty principle which contains a minimal length, a minimal
momentum and a maximal momentum. Firstly, the quantum corrections to the
thermodynamics of a black hole is investigated. Then, according to Verlinde's
theory, the generalized uncertainty principle (GUP) corrected entropic force is
obtained. The result shows that the GUP corrected entropic force is related not
only to the properties of the black holes, but also to the Planck length and
the dimensionless constants and . Moreover,
based on the GUP corrected entropic force, we also derive the modified
Einstein's field equation (EFE) and the modified Friedmann equation.Comment: 16 pages. arXiv admin note: substantial text overlap with
arXiv:1604.0470
Detecting a set of entanglement measures in an unknown tripartite quantum state by local operations and classical communication
We propose a more general method for detecting a set of entanglement
measures, i.e. negativities, in an \emph{arbitrary} tripartite quantum state by
local operations and classical communication. To accomplish the detection task
using this method, three observers, Alice, Bob and Charlie, do not need to
perform the partial transposition maps by the structural physical
approximation; instead, they are only required to collectively measure some
functions via three local networks supplemented by a classical communication.
With these functions, they are able to determine the set of negativities
related to the tripartite quantum state.Comment: 16 pages, 2 figures, revte
Mixed epithelial and mesenchymal metaplastic carcinoma (carcinosarcoma) of the breast: a case report
The scattering parameters of embedded devices can be measured by means of contactless vector network analysis. To achieve accurate measurement results, the contactless measurement setup has to be calibrated. However, if the substrate material or the planar transmission lines on the substrate changes, a new calibration is necessary. In this paper a method will be examined, which reduces the number of calibration cycles by using a database. Analytical results show that by using this database method, errors occur which depend on the coupling coefficients and on the load impedances of the contactless probes. However, the measurement results show deviations smaller than 7% in comparison to the conventional vector network analysis, which is sufficient for the most pratical applications.Rosenberger Hochfrequenztechnik GmbH & Co. K
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