scholarly journals A WoT-Based Method for Creating Digital Sentinel Twins of IoT Devices

Sensors ◽  
2021 ◽  
Vol 21 (16) ◽  
pp. 5531
Author(s):  
Ivan Lopez-Arevalo ◽  
Jose Luis Gonzalez-Compean ◽  
Mariana Hinojosa-Tijerina ◽  
Cristhian Martinez-Rendon ◽  
Raffaele Montella ◽  
...  

The data produced by sensors of IoT devices are becoming keystones for organizations to conduct critical decision-making processes. However, delivering information to these processes in real-time represents two challenges for the organizations: the first one is achieving a constant dataflow from IoT to the cloud and the second one is enabling decision-making processes to retrieve data from dataflows in real-time. This paper presents a cloud-based Web of Things method for creating digital twins of IoT devices (named sentinels).The novelty of the proposed approach is that sentinels create an abstract window for decision-making processes to: (a) find data (e.g., properties, events, and data from sensors of IoT devices) or (b) invoke functions (e.g., actions and tasks) from physical devices (PD), as well as from virtual devices (VD). In this approach, the applications and services of decision-making processes deal with sentinels instead of managing complex details associated with the PDs, VDs, and cloud computing infrastructures. A prototype based on the proposed method was implemented to conduct a case study based on a blockchain system for verifying contract violation in sensors used in product transportation logistics. The evaluation showed the effectiveness of sentinels enabling organizations to attain data from IoT sensors and the dataflows used by decision-making processes to convert these data into useful information.

2012 ◽  
Vol 11 (1) ◽  
pp. 94-118 ◽  
Author(s):  
Rodrigo Salcedo ◽  
Alejandra Rasse

This paper addresses the scholarly debate on cultural homogeneity or heterogeneity of urban poor families. While authors such as Lewis (1959) or Wacquant (2000 ; 2001) claim that structural disadvantages are linked to a particular type of identity or culture, others such as Hannerz (1969) , Anderson (1999 ; 2002) , or Portes ( Portes and Manning, 1986 ; Portes and Jensen, 1989 ) believe that it is possible to find different behaviors, expectations, decision–making processes, and outcomes among people living in seemingly identical structural conditions ( Small et al., 2010 ). Using Santiago, Chile, as a case study, we differentiate five different cultures or identities among the poor. Those identities seem to be the product of different historical and political circumstances, as well as of different types of public policies. The paper ends with a discussion of the need for poverty reduction policies to consider these differences among the poor.


Author(s):  
Yangji Doma Sherpa ◽  
A. John Sinclair ◽  
Thomas Henley

The Himalayan region of India is experiencing rapid development in tourism, agriculture, highway construction and hydroelectric dam construction. This research considered the role of the public both within and outside of development decision-making processes in these high mountain environments using the proposed Himalayan Ski Village (HSV) in Manali as a case study. The qualitative data revealed that there has been an extensive array of public participation activity related to the HSV project over approximately 10 years. Very little of this activity has evolved, however, through the formal decision-making process. Rather, most participation activities, such as general house meetings, objection letters, public rallies, court cases against the proposed project, and a religious congregation were instigated by the public to protest the proposed development. The findings also show that involvement in the participatory activities undertaken by the public and project proponent fostered instrumental and communicative learning outcomes.


Author(s):  
Danita Catherine Burke

Abstract The Arctic Council is frequently called a unique forum but, as this article argues, clubs are common in international politics and in many respects the Arctic Council is a club. This article explores the questions: Why are the Arctic states acting like a club in Arctic politics, and how do internal hierarchies influence how clubs make decisions? As the article illustrates, clubs are the stage for club diplomacy and, in club diplomacy, hierarchies play an important role. Using the Arctic Council as an illustrative case study, this article argues that clubs have internal hierarchies that inform their decision-making processes and their responses to challenges to their status. When clubs try to deal with subjects that extend beyond the boundaries of the sovereignty of club members and the parameters of club membership, club members may suffer from a lack of status and legitimacy to unilaterally deal with the subject.


Author(s):  
Frédéric Adam ◽  
Jean-Charles Pomerol ◽  
Patrick Brézillon

In this article, a newspaper company which has implemented a computerised editorial system is studied in an attempt to understand the impact that groupware systems can have on the decision making processes of an organisation. First, the case study protocol is presented, and the findings of the case are described in detail. Conclusions are then presented which pertain both to this case and to the implementation of decision support systems that have a groupware dimension.


Author(s):  
Lapo Mola ◽  
Cecilia Rossignoli ◽  
Andrea Carugati ◽  
Antonio Giangreco

This exploratory study analyses the effects of the technical and organisational characteristics of business intelligence systems (BIS) on knowledge sharing, collaboration, and decision-making processes. The authors conducted a two-phase multi-method investigation. First, we surveyed 30 enterprises using BIS on a regular basis; then, we engaged in an in-depth case study with one of the respondent companies. Our results show that, on average, the technical and organisational characteristics of the BIS are positively associated with an increase in knowledge sharing, leading to an improvement in internal collaboration that subsequently brings improvement in the quality of decision-making. This case study adds that the way the BIS is designed and appropriated in organisations is important in obtaining such results is. A BIS being designed so that it can be appropriated by the general employee base is key in obtaining the desired organizational impacts. This suggests some requirements for BIS design that we will discuss in terms of theoretical and managerial implications.


2019 ◽  
Vol 11 (1) ◽  
pp. 1025-1034 ◽  
Author(s):  
Gyula Nagy ◽  
György Vida ◽  
Lajos Boros ◽  
Danijela Ćirić

Abstract Environmental justice is a normative framework for the analysis of environmental impacts on the wellbeing of individuals and social groups. According to the framework, the deprived social groups and ethnic minorities are often more exposed to environmental risks and hazards due to their disadvantaged situation, and due to the lack of representation and political power. To manage the impacts of injustices and to include the citizen in the decision-making processes, proper information is needed on local attitudes and decision-making processes. Therefore, this study sought to (i) identify the main factors shaping the attitudes towards environmental injustices and (ii) to analyse the attitudes and perception of the various social groups and (iii) to identify the main factors which are shaping the attitudes and actions of those who were affected by the floods of 2001 and 2010 through the use of decision tree method. The data for the predictive model was acquired from a questionnaire survey conducted in two disadvantaged and flood-hit Hungarian regions. Based on the survey data, a principal component analysis (PCA) was conducted, which resulted in three principal components; fear, social change, and change in the built environment. The study focused only on the elements of the “fear principal component”, due to the decision tree tool homogenous groups identified in relation to this component. Our analysis showed that ethnicity has a determinative role in the emergence and the level of fear from floods; the Roma respondents expressed a significantly higher level of fear than others.


2011 ◽  
Vol 320 ◽  
pp. 559-562
Author(s):  
Xiao Hua Dou ◽  
Ren Zhong Liu ◽  
Xin Zheng Cheng

The thesis designs and develops the system for Housing space information in Wuhan based on WebGIS and Oracle. this system by applied case study of retrieving and presenting residential area distribution among groups with different income, and realize some function of residents of housing information in real-time queries and spatial distribution’s visualization, and pays support and contribution to the decision-making of urban development and government or some relative department for planning and macro-control housing prices, then avoid different income groups appear isolation tendency for Wuhan residents layout, and promote a harmonious residential space.


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