scholarly journals Spacecraft-Charging Mitigation of a High-Power Electron Beam Emitted by a Magnetospheric Spacecraft: Simple Theoretical Model for the Transient of the Spacecraft Potential

2018 ◽  
Vol 123 (8) ◽  
pp. 6424-6442 ◽  
Author(s):  
F. Lucco Castello ◽  
G. L. Delzanno ◽  
J. E. Borovsky ◽  
G. Miars ◽  
O. Leon ◽  
...  
Keyword(s):  
Electron Beam ◽  
Theoretical Model ◽  
High Power ◽  
Spacecraft Charging ◽  
Simple Theoretical Model ◽  
Spacecraft Potential

Spacecraft-charging Mitigation of a High-Power Electron Beam Emitted by a Magnetospheric Spacecraft

2017 ◽  
Author(s):  
Federico Lucco Castello ◽  
Gian Luca Delzanno ◽  
Joseph E. Borovsky ◽  
Omar Leon ◽  
Grant Miars ◽  
...  
Keyword(s):  
Electron Beam ◽  
High Power ◽  
Spacecraft Charging

scholarly journals Incumbent and Entrant Bidding in Scoring Rule Auctions: A Study on Italian Canteen Services

2020 ◽  
Vol 0 (0) ◽  
Author(s):  
Riccardo Camboni ◽  
Paola Valbonesi
Keyword(s):  
Theoretical Model ◽  
Production Cost ◽  
Specific Information ◽  
Scoring Rule ◽  
The Public ◽  
Simple Theoretical Model ◽  
Original Dataset

AbstractWe empirically investigate incumbents’ and entrants’ bids on an original dataset of 192 scoring rule auctions for canteen services in Italy. Our findings show that winning rebates are lower (i.e., prices paid by the public buyer are higher) when the contract is awarded to the incumbent supplier. This result is not explained by the observable characteristics of the auction or the service awarded. We develop a simple theoretical model showing that the result is consistent with a setting in which the buyer exploits specific information on the incumbent supplier’s production cost.

scholarly journals Market Choices Driven by Reference Groups: A Comparison of Analytical and Simulation Results on Random Networks

Entropy ◽  
2021 ◽  
Vol 23 (8) ◽  
pp. 1007
Author(s):  
Michał Ramsza
Keyword(s):  
Theoretical Model ◽  
Reference Group ◽  
Third Party ◽  
Qualitative Behavior ◽  
Reference Groups ◽  
Group Influence ◽  
Simple Theoretical Model ◽  
High Connectivity ◽  
Simulation Results ◽  
Two Equilibria

The present paper reports simulation results for a simple model of reference group influence on market choices, e.g., brand selection. The model was simulated on three types of random graphs, Erdos–Renyi, Barabasi–Albert, and Watts–Strogatz. The estimates of equilibria based on the simulation results were compared to the equilibria of the theoretical model. It was verified that the simulations exhibited the same qualitative behavior as the theoretical model, and for graphs with high connectivity and low clustering, the quantitative predictions offered a viable approximation. These results allowed extending the results from the simple theoretical model to networks. Thus, by increasing the positive response towards the reference group, the third party may create a bistable situation with two equilibria at which respective brands dominate the market. This task is easier for large reference groups.

Electron-beam valves (EBVs): a new type of high-power device

2000 ◽  
Author(s):  
Vladimir I. Perevodchikov ◽  
V. N. Shapenko ◽  
V. F. Martynov ◽  
P. M. Stalkov ◽  
A. L. Shapiro
Keyword(s):  
Electron Beam ◽  
High Power ◽  
Power Device ◽  
New Type

On the dependence of the efficiency of a 240 GHz high-power gyrotron on the displacement of the electron beam and on the azimuthal index

2014 ◽  
Vol 21 (1) ◽  
pp. 013104 ◽  
Author(s):  
O. Dumbrajs ◽  
K. A. Avramidis ◽  
J. Franck ◽  
J. Jelonnek
Keyword(s):  
Electron Beam ◽  
High Power ◽  
Azimuthal Index
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