Constraints on the electron acceleration process in solar flare: a case study

Author(s):  
G. Li ◽  
X. Wu ◽  
F. Effenberger ◽  
L. Zhao ◽  
S. Lesage ◽  
...  
2020 ◽  
Vol 33 (6) ◽  
pp. 1163-1180
Author(s):  
Piotr Wójcik ◽  
Krzysztof Obłój ◽  
Aleksandra Wąsowska ◽  
Szymon Wierciński

PurposeThe purpose of this paper is to explore the emotional dynamics of the corporate acceleration process, using the systems psychodynamics perspective.Design/methodology/approachThe study applies inductive multiple case study of embedded 10 cases of corporate acceleration, covering both incumbent and startup perspectives, occurring in the context of a corporate accelerator.FindingsWe find that (1) the process of corporate acceleration involves three phases, each of them is dominated by a different emotional state (hope, anxiety and acceptance), triggering different behavioral responses; (2) as a means to deal with negative emotions, entrepreneurs and corporate acceleration program's team members develop different mechanisms of dealing with contradictories in subsequent acceleration phases (defense and copying mechanisms), which are reflected in their behaviors. Coping mechanisms with goal reformulation (i.e. refocus from the officially declared “open innovation” goals toward mainly symbolic ones) is an effective strategy to manage negative emotions in third phase of the acceleration.Research limitations/implicationsOur sample is limited to two relatively similar accelerators established by telecom companies, and therefore, our theoretical and practical conclusions cannot be generalized.Practical implicationsWe supplement the studies of corporate accelerators that imply how to design them better and improve decision-making rules with recommendation that in order to improve their effectiveness in terms of learning and innovations, their managers need not only to learn how to manage structural and procedural differences but also how to overcome social defenses triggered by corporate–startups cooperation.Originality/valueBy documenting a multidimensional impact of acceleration process, and especially shedding light on psychodynamic aspects behind such liaisons, this paper contributes to richer understanding of corporate–startup relationships, typically examined through a rationalistic lens of strategy literature. The study contributes to interorganizational research and open innovation literature, by showing that corporate acceleration process is marked by phases based on the type of emotions intertwined with the nature and dynamism of its life cycle. It indicates how these emotions are managed depending on their type.


Author(s):  
Gilberto Sarfati Gilberto Sarfati ◽  
Thomaz Martins ◽  
Gabriel Akel Abrahão

Objective: Conflicts have negative impacts on organizational performance and can lead to company mortality. The GVentures Accelerator, from the School of Business Administration of São Paulo (EAESP-FGV) identified that several startups that failed during and after the acceleration process had conflicts among the founding partners. This work aims to understand why some entrepreneurial teams in a pre-seed stage are able to overcome conflicts while others are not Methodology: We conducted a case study of 9 accelerated startups using in-depth interviews with 20 founding partners, and the interviews were followed by the codification and analysis of the cases with support from the manager responsible for the accelerator.Results: The research concludes that operational conflicts that escalate to affective conflicts due to disagreements in the process of giving and receiving feedback and/or mistrust between partners can lead to the dissolution of a company. On the other hand, founding members, even if they experience affective conflicts, are able to overcome the problems using the strategies of taking a step aside, giving in and putting their egos aside. It was also identified that the acceleration process tends to exacerbate the operational conflicts between founding partners.Theoretical/methodological contributions: The research contributes to the literature about founding teams by pointing out that operational conflict does not necessarily lead to the dissolution of the organization or closing the business, but operational conflicts that intensify to affective conflicts due to disagreements in the process of giving and receiving feedback and/or distrust among partners can lead to the dissolution of the organizationRelevance/originality: Founding teams are the backbone of any company. In spite of several articles discussing team conflict little is known about why some entrepreneurial team are able to overcome conflicts while other not. Moreover, also little is known about the role accelerators play in these conflicts.Social/management contribution: The conclusions about the strategies for managing founding team conflicts: taking a step aside, giving in and putting their egos aside; may be very useful for both entrepreneurs and accelerators’ management team in dealing with conflicts among founders.


2020 ◽  
Author(s):  
Huishan Fu

<p>During magnetic reconnection, magnetic energy is explosively converted to particle energy and consequently electrons are accelerated to hundreds of keV that are dangerous to spacecraft and astronauts. To date, how and where the acceleration happens during reconnection is still unknown. Also, how efficient can the acceleration be remains a puzzle. Using spacecraft measurements (e.g., Cluster and MMS) and numerical simulations, many attempts have been made to answer these questions during the last twenty years. In this talk, I will briefly review these progresses and then show our recent results in understanding these issues. Specifically, I will (1) report a super-efficient electron acceleration by magnetic reconnection in the Earth’s magnetotail, during which electron fluxes are enhanced by 10000 times within 30 seconds; (2) discuss the mechanisms leading to super-efficient electron acceleration; (3) report the first evidence of electron acceleration at a reconnecting magnetopause, during which the acceleration process is nonadiabatic; and (4) report electron acceleration in the </p>


2013 ◽  
Vol 768 (2) ◽  
pp. 190 ◽  
Author(s):  
Gregory D. Fleishman ◽  
Eduard P. Kontar ◽  
Gelu M. Nita ◽  
Dale E. Gary

2010 ◽  
Vol 6 (S274) ◽  
pp. 214-219
Author(s):  
Toshio Terasawa

AbstractAcceleration processes at astrophysical collisionless shocks are reviewed with a special emphasis on the importance of in situ observations of heliospheric shocks. Topics to be included are nonlinear reaction of shock acceleration process, effect of neutral particles, and electron acceleration.


2015 ◽  
Vol 55 (3) ◽  
pp. 295-298 ◽  
Author(s):  
R. V. Gorgutsa ◽  
V. A. Kovalev ◽  
I. G. Kostuchenko ◽  
A. K. Markeev ◽  
D. E. Sobolev ◽  
...  

Author(s):  
Zety Sharizat Hamidi ◽  
M.B. Ibrahim ◽  
N.N.M. Shariff ◽  
C. Monstein

Using data from a BLEIN Callisto site, we aim to provide a comprehensive description of the synopsis formation and dynamics of a a single solar burst type III and IV event due to active region AR1890. This eruption has started since 14:15 UT with a formation of type III solar burst. To investigate the importance of the role of type III solar burst can potentially form a type IV solar burst, the literature review of both bursts is outlined in detailed. The orientation and position of AR1890 make the explosion of a class C-solar flare is not directly to the Earth. Nevertheless, it is clear that the interactions of others sunspots such as AR1893,AR1895,AR1896, AR1897 and AR1898 should be studied in detail to understand what makes the type III burst formed before the type IV solar burst.


2009 ◽  
Vol 699 (1) ◽  
pp. 917-922 ◽  
Author(s):  
Alexander Warmuth ◽  
Gordon D. Holman ◽  
Brian R. Dennis ◽  
Gottfried Mann ◽  
Henry Aurass ◽  
...  

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