scholarly journals The Bitcoin Mining Game

Ledger ◽  
2016 ◽  
Vol 1 ◽  
pp. 53-68 ◽  
Author(s):  
Nicolas Houy
Keyword(s):  
Nash Equilibria ◽  
Mathematical Problem ◽  
Current Situation ◽  
Network Nodes ◽  
Block Space

This article deals with the mining incentives in the Bitcoin protocol. The mining process is used to confirm and secure transactions. This process is organized as a speed game between individuals or firms – the miners – with different computational powers to solve a mathematical problem, bring a proof of work, spread their solution and reach consensus among the Bitcoin network nodes with it. First, we define and specify this game. Second, we analytically find its Nash equilibria in the two-player case. We analyze the parameters for which the miners would face the proper incentives to fulfill their function of transaction processors in the current situation. Finally, we study the block space market offer. 

Criteria and Methods for Reliable Three-Dimensional Image Reconstruction

1974 ◽  
Vol 32 ◽  
pp. 330-331
Author(s):  
R. A. Crowther
Keyword(s):  
Image Reconstruction ◽  
Finite Number ◽  
Density Distribution ◽  
Electron Micrographs ◽  
Mathematical Problem ◽  
Three Dimensional ◽  
Ideal Case ◽  
Dimensional Image ◽  
General Object ◽  
The Ideal

The reconstruction of a three-dimensional image of a specimen from a set of electron micrographs reduces, under certain assumptions about the imaging process in the microscope, to the mathematical problem of reconstructing a density distribution from a set of its plane projections.In the absence of noise we can formulate a purely geometrical criterion, which, for a general object, fixes the resolution attainable from a given finite number of views in terms of the size of the object. For simplicity we take the ideal case of projections collected by a series of m equally spaced tilts about a single axis.

Recommendations for Medical Informatics Training in The Netherlands

1994 ◽  
Vol 33 (03) ◽  
pp. 308-311 ◽  
Author(s):  
A. Hasman
Keyword(s):  
The Netherlands ◽  
Medical Informatics ◽  
Education And Training ◽  
Current Situation ◽  
Arts And Sciences ◽  
Informatics Training ◽  
Royal Netherlands Academy ◽  
And Training

Abstract:In this contribution recommendations for education and training in Medical Informatics as they have been formulated end 1987 by the Subcommittee Medical Informatics of the Royal Netherlands Academy of Arts and Sciences are described. The current situation of education and training is presented and compared with the recommendations. It is concluded that not all recommendations have yet been followed up.

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