scholarly journals Distributing Information in Small-World Networks: Four Social Cases of the Process of Contagion in Spain

2021 ◽  
pp. 2150008
Author(s):  
Simone Belli ◽  
Leonardo Reyes
Keyword(s):  
Small World ◽  
Social Institutions ◽  
Small World Network ◽  
Small World Networks ◽  
Stochastic Version ◽  
The Social ◽  
Affective Processes ◽  
Average Activity ◽  
Three State Model

This case study is part of a research project based in Spain between 2011 and 2014 on the social institutions and affective processes involved in what is normally referred to as social movement. Our purpose is to study how information circulates in small-world networks in which the dynamics are modeled with a stochastic version of Greenberg–Hasting’s excitable model. This is a three-state model in which a node can be in an excited, passive, or susceptible state. Only in the susceptible state does a node interact with its neighbors in the small-world network, and its interaction depends on the probability of contagion. We introduce an infection probability, which is the only parameter in our implementation of Greenberg–Hasting’s model. The small-world network is characterized by a mean connectivity parameter and by a disorder parameter. The resulting dynamics are characterized by the average activity in the network. We have found transitions from inactive to active collective regimes, and we can induce this transition by varying. We search for different dynamics within small-world networks of citizens’ organizations by going through the following steps: identifying alliance patterns; looking for robust small-world attributes and how they are constructed; and interpreting the three modes of our model.

scholarly journals Distributing Information in Small-World Networks: Four Social Cases of the Process of Contagion in Spain.

2020 ◽  
Author(s):  
Simone Belli ◽  
Leonardo Reyes
Keyword(s):  
Small World ◽  
Social Institutions ◽  
Small World Network ◽  
Small World Networks ◽  
Stochastic Version ◽  
The Social ◽  
Affective Processes ◽  
Average Activity ◽  
Three State Model

Abstract This case study is part of a research project based in Spain between 2011 and 2014 on the social institutions and affective processes involved in what is normally referred to as social movement. Our purpose is to study how information circulates in small-world networks in which the dynamics are modeled with a stochastic version of the Greenberg-Hasting's excitable model. This is a three state model, in which a node can be in an excited, passive, or susceptible state. Only in the susceptible state does a node interact with its neighbors in the small-world network and its interaction depends on a probability of contagion. We introduce an infection probability, which is the only parameter in our implementation of the Greenberg-Hasting's model. The small-world network is characterized by a mean connectivity parameter and by a disorder parameter.The resulting dynamics are characterized by the average activity in the network. We have found transitions from inactive to active collective regimes, and we can induce this transition by varying. We search for different dynamics within small-world networks of citizens’ organizations by going through the following steps: identifying alliance patterns; looking for robust small-world attributes and how they are constructed; and interpreting the three modes of our model.

Small World Network Model Validation. Case Study of Suartone Historical Fire in Corsica

2021 ◽  
pp. 1-16
Author(s):  
N. Hamamousse ◽  
A. Kaiss ◽  
F. Giroud ◽  
N. Bozabalian ◽  
J-P. Clerc ◽  
...  
Keyword(s):  
Model Validation ◽  
Network Model ◽  
Small World ◽  
Small World Network

scholarly journals Quantitative method for resilience assessment framework of airport network during COVID-19

PLoS ONE ◽  
2021 ◽  
Vol 16 (12) ◽  
pp. e0260940
Author(s):  
Jiuxia Guo ◽  
Yang Li ◽  
Zongxin Yang ◽  
Xinping Zhu
Keyword(s):  
Complex Network ◽  
Small World ◽  
Global Scale ◽  
Assessment Framework ◽  
Small World Networks ◽  
Scale Free ◽  
Global Pandemic ◽  
Network Metrics ◽  
Resilience Assessment

The resilience and vulnerability of airport networks are significant challenges during the COVID-19 global pandemic. Previous studies considered node failure of networks under natural disasters and extreme weather. Herein, we propose a complex network methodology combined with data-driven to assess the resilience of airport networks toward global-scale disturbance using the Chinese airport network (CAN) and the European airport network (EAN) as a case study. The assessment framework includes vulnerability and resilience analyses from the network- and node-level perspectives. Subsequently, we apply the framework to analyze the airport networks in China and Europe. Specifically, real air traffic data for 232 airports in China and 82 airports in Europe are selected to form the CAN and EAN, respectively. The complex network analysis reveals that the CAN and the EAN are scale-free small-world networks, that are resilient to random attacks. However, the connectivity and vulnerability of the CAN are inferior to those of the EAN. In addition, we select the passenger throughput from the top-50 airports in China and Europe to perform a comparative analysis. By comparing the resilience evaluation of individual airports, we discovered that the factors of resilience assessment of an airport network for global disturbance considers the network metrics and the effect of government policy in actual operations. Additionally, this study also proves that a country’s emergency response-ability towards the COVID-19 has a significantly affectes the recovery of its airport network.

scholarly journals Guarantee of the social rights of children with chronic conditions: reinventing care towards civil rights

2021 ◽  
Vol 74 (suppl 4) ◽  
Author(s):  
Tatiana Silva Tavares ◽  
Kênia Lara Silva ◽  
Regina Garcia de Lima ◽  
Elysângela Dittz Duarte
Keyword(s):  
Civil Rights ◽  
Critical Discourse Analysis ◽  
Chronic Conditions ◽  
Family Members ◽  
Social Institutions ◽  
Public Health Education ◽  
The Social ◽  
Multiple Case ◽  
Children With Chronic Conditions

ABSTRACT Objective: To analyze the experiences of families in the exercise of the rights of children with chronic conditions in public health, education and social assistance institutions. Method: ethnographic multiple case study, with qualitative approach, following the theoretical approach of Boaventura Santos. Experiences of the families of these children in a city were studied through interviews with family members, managers and professionals from social institutions (35), participant observations in social spaces (13) and creation of eco-maps (3). Critical Discourse Analysis was performed. Results: the offer of services is lower than the demand, and exclusion processes persist. Given the hegemony of neoliberal and normality ideologies, meetings between family members and professionals revealed obstacles to civil rights; however, when these ideologies were challenged, the realization of their rights was enhanced. Final considerations: the care to promote civil rights requires family members, managers and professionals to develop subjectivities that overcome neoliberal and normality ideologies, recognizing these children as subjects of law.

How to Quantify 'Small-World Networks'?

Fractals ◽  
1998 ◽  
Vol 06 (04) ◽  
pp. 301-303 ◽  
Author(s):  
Hanspeter Herzel
Keyword(s):  
Small World ◽  
Small World Network ◽  
Small Worlds ◽  
Small World Networks ◽  
Complete Regularity ◽  
Local Clustering ◽  
Regular Network ◽  
Analytical Expressions ◽  
Global Connection

Recently Watts and Strogatz emphasized the widespread relevance of 'small worlds' and studied numerically networks between complete regularity and complete randomness. In this letter, I derive simple analytical expressions which can reproduce the empirical observations. It is shown how a few random connections can turn a regular network into a 'small-world network' with a short global connection but persisting local clustering.

scholarly journals An evolutionary inspection game with labour unions on small-world networks

2015 ◽  
Vol 5 (1) ◽  
Author(s):  
Salahuddin M. Kamal ◽  
Yas Al-Hadeethi ◽  
Fouad A. Abolaban ◽  
Fahad M. Al-Marzouki ◽  
Matjaž Perc
Keyword(s):  
Bargaining Power ◽  
Evolutionary Process ◽  
Small World ◽  
Small World Network ◽  
Small World Networks ◽  
Labour Unions ◽  
Long Run ◽  
Inspection Game ◽  
Overall Performance

Abstract We study an evolutionary inspection game where agents can chose between working and shirking. The evolutionary process is staged on a small-world network, through which agents compare their incomes and, based on the outcome, decide which strategy to adopt. Moreover, we introduce union members that have certain privileges, of which the extent depends on the bargaining power of the union. We determine how the union affects the overall performance of the firm that employs the agents and what are its influences on the employees. We find that, depending on its bargaining power, the union has significant leverage to deteriorate the productivity of a firm and consequently also to lower the long-run benefits of the employees.

scholarly journals Revisiting the Small-World Phenomenon

2016 ◽  
Vol 20 (1) ◽  
pp. 149-173 ◽  
Author(s):  
Tore Opsahl ◽  
Antoine Vernet ◽  
Tufool Alnuaimi ◽  
Gerard George
Keyword(s):  
Significant Variation ◽  
Random Network ◽  
Small World ◽  
Random Networks ◽  
Significant Heterogeneity ◽  
Small World Network ◽  
Small World Networks ◽  
Firm Outcomes ◽  
Baseline Levels

Research has explored how embeddedness in small-world networks influences individual and firm outcomes. We show that there remains significant heterogeneity among networks classified as small-world networks. We develop measures of the efficiency of a network, which allow us to refine predictions associated with small-world networks. A network is classified as a small-world network if it exhibits a distance between nodes that is comparable to the distance found in random networks of similar sizes—with ties randomly allocated among nodes—in addition to containing dense clusters. To assess how efficient a network is, there are two questions worth asking: (a) What is a compelling random network for baseline levels of distance and clustering? and (b) How proximal should an observed value be to the baseline to be deemed comparable? Our framework tests properties of networks, using simulation, to further classify small-world networks according to their efficiency. Our results suggest that small-world networks exhibit significant variation in efficiency. We explore implications for the field of management and organization.

URBAN TRAFFIC CONGESTION SPREADING IN SMALL WORLD NETWORKS

2005 ◽  
Vol 19 (28) ◽  
pp. 4239-4246 ◽  
Author(s):  
HUIJUN SUN ◽  
JIANJUN WU
Keyword(s):  
Infection Rate ◽  
Traffic Congestion ◽  
Small World ◽  
Urban Traffic ◽  
Small World Network ◽  
Small World Networks ◽  
Seir Model

In this paper, two definitions about traffic congestion are proposed. We describe the traffic congestion spreading with the SEIR model of a complex small-world network. In addition, the relationships among the congestion factor, the number of average infection, the average recover rate and the infection rate are given by simulations in general traffic congestion conditions.

scholarly journals The Basic Social Values which underlies Social Institutions of Farmers In The Rural Agro-Tourism Area of Central Java

2018 ◽  
Vol 7 (1) ◽  
pp. 01 ◽  
Author(s):  
Imam Santosa ◽  
Agus Suyanto
Keyword(s):  
Social Values ◽  
Social Institutions ◽  
Social Institution ◽  
Case Study Method ◽  
Qualitative And Quantitative ◽  
Central Java ◽  
Institutional Strengthening ◽  
The Social ◽  
Central Java Province

<p>This research aims to explore the basic value of social institution of farmers and find the technique of re-functionalization of social institutions of farmers. The design of this research is using a case study method based on qualitative and quantitative approach. This research is intentionally conducted in Karangreja Sub-district, Purbalingga Regency of Central Java Province.  Based on the research results, The prominent basic social values in the social institutions of farmers in the Agro-tourism area tend to be still around the proximity to the production process. Three prominent basic values: (1) the basic value of perseverance in the process of production, (2) the basic value of togetherness for making decision on production, (3) the value of carefulness in sorting and grading product. Indeed the basic value of togetherness to fight for the price is high but it has not bring such a tangible results for farmers’. The authors predicted that if the socio-economic institutions are strong, they will be able to empower farmers and vice versa if the social institution is weak then the empowerment of farmers is also weak. However, it is necessary to concern that the institution which in charge of product quality, post harvest technology and marketing has not been much strengthened, so that the welfare of farmers has not changed much. Institutional strengthening in sectors that are still weak need to get more attention from various parties so that farmers become more dynamic and more empowered.</p>

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