scholarly journals Production Networks: A Primer

2019 ◽  
Vol 11 (1) ◽  
pp. 635-663 ◽  
Author(s):  
Vasco M. Carvalho ◽  
Alireza Tahbaz-Salehi
Keyword(s):  
Macroeconomic Fluctuations ◽  
Shock Propagation ◽  
Production Networks ◽  
Input Output ◽  
Propagation Channel ◽  
Theoretical Foundations

This article reviews the literature on production networks in macroeconomics. It presents the theoretical foundations for the role of input–output linkages as a shock propagation channel and as a mechanism for transforming microeconomic shocks into macroeconomic fluctuations. The article also provides a brief guide to the growing literature that explores these themes empirically and quantitatively.

scholarly journals Supply Chain Disruptions: Evidence from the Great East Japan Earthquake*

2020 ◽  
Author(s):  
Vasco M Carvalho ◽  
Makoto Nirei ◽  
Yukiko U Saito ◽  
Alireza Tahbaz-Salehi
Keyword(s):  
Supply Chain ◽  
Great East Japan Earthquake ◽  
Gdp Growth ◽  
Production Networks ◽  
Input Output ◽  
Supply Chain Disruptions ◽  
Real Gdp ◽  
Propagation Effects ◽  
Macroeconomic Impact

Abstract Exploiting the exogenous and regional nature of the Great East Japan Earthquake of 2011, this paper provides a quantification of the role of input-output linkages as a mechanism for the propagation and amplification of shocks. We document that the disruption caused by the disaster propagated upstream and downstream along supply chains, affecting the direct and indirect suppliers and customers of disaster-stricken firms. Using a general equilibrium model of production networks, we then obtain an estimate for the overall macroeconomic impact of the disaster by taking these propagation effects into account. We find that the earthquake and its aftermaths resulted in a 0.47 percentage point decline in Japan’s real GDP growth in the year following the disaster.

SECTANITY IN THE CONTEXT OF MANIFESTATIONS OF MODERN RELIGIOUS EXTREMISM

2020 ◽  
Author(s):  
Pavel Agapov ◽  
Kirill Stepkin
Keyword(s):  
Russian Federation ◽  
Religious Extremism ◽  
The Russian Federation ◽  
Relationship Of ◽  
The Relationship ◽  
Theoretical Foundations

The article considers the general theoretical foundations of the relationship of sectarianism and religious extremism in the Russian Federation. Practical examples of the role of destructive sects in modern religious extremism in the Russian Federation are given.

Dopamine Increases the Gain of the Input-Output Response of Rat Prefrontal Pyramidal Neurons

2008 ◽  
Vol 99 (6) ◽  
pp. 2985-2997 ◽  
Author(s):  
Kay Thurley ◽  
Walter Senn ◽  
Hans-Rudolf Lüscher
Keyword(s):  
Working Memory ◽  
Neuronal Excitability ◽  
Pyramidal Neurons ◽  
D1 Receptors ◽  
Input Output ◽  
Prefrontal Cortical ◽  
Noisy Input ◽  
Relationship Of

Dopaminergic modulation of prefrontal cortical activity is known to affect cognitive functions like working memory. Little consensus on the role of dopamine modulation has been achieved, however, in part because quantities directly relating to the neuronal substrate of working memory are difficult to measure. Here we show that dopamine increases the gain of the frequency-current relationship of layer 5 pyramidal neurons in vitro in response to noisy input currents. The gain increase could be attributed to a reduction of the slow afterhyperpolarization by dopamine. Dopamine also increases neuronal excitability by shifting the input-output functions to lower inputs. The modulation of these response properties is mainly mediated by D1 receptors. Integrate-and-fire neurons were fitted to the experimentally recorded input-output functions and recurrently connected in a model network. The gain increase induced by dopamine application facilitated and stabilized persistent activity in this network. The results support the hypothesis that catecholamines increase the neuronal gain and suggest that dopamine improves working memory via gain modulation.

SOCIAL INSTITUTIONS AND THEIR IMPACT ON THE CYCLICAL DEVELOPMENT OF THE ECONOMY

2021 ◽  
Vol 16 (4) ◽  
pp. 133-147
Author(s):  
I.R. LYAPINA ◽  
◽  
T.A. ZHURAVLEVA ◽  
I.V. SKOBLIAKOVA ◽  
◽  
...  
Keyword(s):  
Economic Development ◽  
Social Relations ◽  
Social Institutions ◽  
Economic Benefits ◽  
Regulatory Processes ◽  
The Family ◽  
Production And Distribution ◽  
Optimization Mechanism ◽  
Theoretical Foundations

The purpose of the research is to study of the features of the influence of social institutions on the cyclicality and dynamics of economic development in the context of identifying the role of social institutions at individual phases of the cycle of economic development, as well as consideration of the functions and tools of social institutions by phases of economic development. The subject of the research is a set of roles, functions and tools of social institutions related to different phases of the cycle of economic development. The methodological base is formed for the implementation of scientific research tasks. Its tools are methods that allow reflecting the features of the influence of social institutions on the cyclical nature of the economy: the method of theoretical foundations, the method of grouping, the method of analysis, the method of comparison, the method of implication. As a result of the study, it is indicated that the functions of social institutions should be highlighted: the consolidation of emerging social relations, adaptation, regulatory processes, a communication basis and a translational basis. The instruments that influence economic fluctuations are formed in the context of social institutions. Thus, the institution of the family is characterized by the use of an optimization mechanism, the concept of sustainability of social relations, the concept of production and distribution of economic benefits in order to meet the needs of each of the subjects.

scholarly journals Errors in Second/Foreign Language Learning and Their Interpretations

2017 ◽  
Vol 3 (1) ◽  
pp. 1 ◽  
Author(s):  
Julia Falla Wood
Keyword(s):  
Language Learning ◽  
Second Language Learning ◽  
Mother Tongue ◽  
Meta Analysis ◽  
Cognitive Strategies ◽  
Reliability And Validity ◽  
Foreign Language Learning ◽  
Theoretical Foundations ◽  
Possible Cause

The aim of this article is to try to understand why the results of studies on errors in second language learning undertaken for several decades are diverse or even divergent. Some of these studies state that the mother tongue (L1) plays an important role in the learning process not only at the beginning, but also at higher levels of competency while others deny the influence of the mother tongue. The results of 60 studies on errors over a period of 40 years were contrasted to find out if a link existed between the theoretical foundations, and the interpretation of data, and conclusions of those studies. The results of the meta-analysis of studies whose theoretical foundations were related to operational cognitive strategies showed a continuum from partial to an important role of L1, and those related to order of acquisition, universal sequences showed a non-influence of L1. Another possible cause for this discrepancy was found in the method used to classify the errors. Finally, a possible cause could have been the methodological difficulties concerning the reliability and validity of the data. Only one third of the studies applied the control of bias and the triangulation of data.

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