Modeling a Large-Scale Economic System and Hopf Bifurcation

2019 ◽  
Vol 09 (01) ◽  
pp. 28-35
Author(s):  
宇 鲍
Keyword(s):  
Hopf Bifurcation ◽  
Economic System ◽  
Large Scale

World 2021: Pandemic and economic problems remain acute

2021 ◽  
pp. 5-20
Author(s):  
M. V. Ershov
Keyword(s):  
Economic System ◽  
Global Economy ◽  
Large Scale ◽  
Real Economy ◽  
Economic Problems ◽  
Support Measures ◽  
Long Time ◽  
Digital Money ◽  
Successful Business ◽  
The Stability

The global economy continues to grow, albeit mainly due to large-scale support measures from governments and regulators. Moreover, the latter are not sure about the prospects for such development, since the economies do not demonstrate the potential for independent growth. As a result, in order to stimulate it, regulators are forced to expand the range of their tools, mechanisms, approaches, otherwise the risks to the stability of the global financial and economic system increase. All this is happening against the background of negative rates, which have become virtually ubiquitous and persist for a long time. New growth records are being set in the stock markets, and their gap from the real economy is growing. A number of sectors are beginning to dominate, forming distortions and bubbles in the markets. In such conditions, the importance of digital money, ecosystems, etc. increases. Moreover, the faster and more efficiently regulators can integrate into these formats, the more successful business, the population, and the economy as a whole will be.

scholarly journals The Influence of COVID-19 on Indonesian Investment

2020 ◽  
Vol 1 (1) ◽  
pp. 1-6
Author(s):  
Jeliastiva Jeliastiva ◽  
Farid Fachrurazi
Keyword(s):  
Economic System ◽  
Large Scale ◽  
Domestic Investment ◽  
Social Distancing ◽  
Work From Home ◽  
The Social ◽  
The World ◽  
Almost All

The COVID-19 outbreak has had a serious impact on almost all countries in the world, including Indonesia. In response to this case, various policies began to emerge. Starting from the implementation of work from home, social distancing and physical distancing, until the implementation of large-scale social restrictions (PSBB). overseas investors are busy focusing their finances on the needs of their respective countries to fight the virus. Domestic investment (PMDN) is also predicted to experience a slowdown. The social distancing policy resulted in the community not being able to run the economic system well, especially in the Indonesian investment sector so that the perokoniman namely investment in Indonesia decreased and there were some delays in investment by other countries in Indonesia.

scholarly journals COVID-19 and the importance of space in entrepreneurship research and policy

2020 ◽  
Vol 38 (8) ◽  
pp. 697-710 ◽  
Author(s):  
Steffen Korsgaard ◽  
Richard A Hunt ◽  
David M Townsend ◽  
Mads Bruun Ingstrup
Keyword(s):  
Economic System ◽  
Large Scale ◽  
Local Economies ◽  
Spatial Perspective ◽  
Entrepreneurship Research ◽  
Digital Platform ◽  
The Face ◽  
The Relationship ◽  
Research And Policy

Given the COVID-19 crisis, the importance of space in the global economic system has emerged as critical in a hitherto unprecedented way. Even as large-scale, globally operating digital platform enterprises find new ways to thrive in the midst of a crisis, small and medium-sized enterprises (SMEs) nestled in local economies have proven to be fragile to shocks, causing countless local economies to unravel in the face of severe challenges to survival. Here, we discuss the role of entrepreneurship in re-building local economies that are more resilient. Specifically, we take a spatial perspective and highlight how the COVID-19 crisis has uncovered problems in the current tendency for thin contextualisation and promotion of globalisation. Based on this critique, we outline new perspectives for thinking about the relationship between entrepreneurship, resilience and local economies. Here, a particular emphasis is given to resilience building through deeply contextualised policies and research, localised flows of products and labour, and the diversification of local economies.

scholarly journals Adaptive Control of Electromagnetic Suspension System by HOPF Bifurcation

2013 ◽  
Vol 2013 ◽  
pp. 1-5
Author(s):  
Aming Hao ◽  
Xiaolong Li ◽  
Longhua She
Keyword(s):  
Adaptive Control ◽  
Hopf Bifurcation ◽  
Large Scale ◽  
Stability Range ◽  
Hopf Bifurcation Point ◽  
Maglev System ◽  
Large Scale Disturbance ◽  
Excited Vibration ◽  
Parameter Variance ◽  
The Stability

EMS-type maglev system is essentially nonlinear and unstable. It is complicated to design a stable controller for maglev system which is under large-scale disturbance and parameter variance. Theory analysis expresses that this phenomenon corresponds to a HOPF bifurcation in mathematical model. An adaptive control law which adjusts the PID control parameters is given in this paper according to HOPF bifurcation theory. Through identification of the levitated mass, the controller adjusts the feedback coefficient to make the system far from the HOPF bifurcation point and maintain the stability of the maglev system. Simulation result indicates that adjusting proportion gain parameter using this method can extend the state stability range of maglev system and avoid the self-excited vibration efficiently.

SOURCING CHIHUAHUAN POLYCHROME CERAMICS: ASSESSING MEDIO PERIOD ECONOMIC ORGANIZATION

2017 ◽  
Vol 29 (1) ◽  
pp. 143-168 ◽  
Author(s):  
Daniela Triadan ◽  
Eduardo Gamboa Carrera ◽  
M. James Blackman ◽  
Ronald L. Bishop
Keyword(s):  
Economic System ◽  
Large Scale ◽  
Wide Distribution ◽  
Economic Organization ◽  
The Political ◽  
Casas Grandes ◽  
New Information ◽  
Production And Distribution ◽  
Ceramic Sourcing

Traditionally, the wide distribution of distinctive Chihuahuan polychrome ceramics has been interpreted as evidence for the extensive interaction sphere of Casas Grandes, or Paquime. The role of the major center of Paquime in the political and economic system is a crucial question in defining the nature and intensity of interactions in the Casas Grandes region and the extent of intraregional social and political integration. A large-scale, regional sourcing project using Chihuahuan polychrome ceramics provides new information on their production and distribution. It also demonstrates the limitations of ceramic sourcing analyses and presents a strong case for the fact that the underlying geology of a region determines the resolution at which ceramics can be attributed to production loci or resource procurement zones.

scholarly journals System principles in analysis of large-scale projects (on the example of high-speed traffic projects)

2020 ◽  
Vol 2 (2) ◽  
pp. 91-97
Author(s):  
Alina T. Romanova ◽  
Alexander A. Vygnanov ◽  
Maria A. Vygnanova
Keyword(s):  
Economic System ◽  
High Speed ◽  
Large Scale

In the article it is described the large-scale projects as a hierarchical production and economic system. The connection of the stages of the projects analysis with the assessment of the level of implementation is presented.

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