Search results for "Data"
showing 10 items of 12992 documents
Proposition méthodologique pour la visualisation et l'exploration des mobilités géographiques
2016
Daily mobility data are multidimensional and desaggregated, what make them hard to manipulate and to analyze. Although methods of representation and analyze have been proposed, none of them seem to be able to efficiently bring out knowledge from data. We propose to combinate this solutions and a methodology of innovative reaggregation to visualize and explore mobility data.
Procedures for study of teaching practices. Literature Review
2012
Interest in studying teaching practices has increased, because of the need to evaluate teachers and dissatisfaction with the usual ways of doing it. Recent approaches with Value-Added Models, based on students’ results on achievement tests do not seem satisfactory. The article is based on a review of literature and classifies the approaches to practices in three groups: instruments based on information given by teachers; observation protocols; and approaches based on the analysis of products of the practices. Specific tools are described and advantages and disadvantages of the three approaches are discussed. El interés por las prácticas docentes ha aumentado, en parte por la necesidad de ev…
Cybersecurity Attacks on Software Logic and Error Handling Within ADS-B Implementations: Systematic Testing of Resilience and Countermeasures
2022
Automatic Dependent Surveillance-Broadcast (ADS-B) is a cornerstone of the next-generation digital sky and is now mandated in several countries. However, there have been many reports of serious security vulnerabilities in the ADS-B architecture. In this paper, we demonstrate and evaluate the impact of multiple cyberattacks on ADS-B via remote radio frequency links that affected various network, processing, and display subsystems used within the ADS-B ecosystem. Overall we implemented and tested 12 cyberattacks on ADS-B in a controlled environment, out of which 5 attacks were presented or implemented for the first time. For all these attacks, we developed a unique testbed that consisted of 1…
Ontology and protocol secure for SCADA
2014
In this work, we present a semantic cyber security system and we study its semantic intelligent systems vulnerabilities, focusing on the semantic attacks. For resolving semantic problems we propose a security global solution for the new generation of SCADA systems. The proposed solution aims at protecting critical semantic SCADA processes from the effects of major failures and semantic vulnerabilities in the modern IT-SCADA network. We used a security block in the global network access point, security protocols deployed in different network (OSI) levels and security ontologies deployed in security devices. We used our mixed coordinates (ECC) cryptography solution, this is an encryption tech…
Measuring Vulnerability of Asylum Seekers and Refugees in Italy
2019
In recent years, a growing number of forced migrants have travelled to Italy across the Mediterranean Sea. While the number of new arrivals has diminished since 2017, the Italian reception system still struggles to process the high number of applications for international protection. A significant proportion of forced migrants who arrive in Italy end up living in informal settlements, such as occupied buildings, shacks, containers and tented camps. In this study, we assess the vulnerability of asylum seekers and refugees living in informal settlements in Italy, using data from the first nationally representative survey of this population. We compare a count measure of vulnerability with a n…
Working the fields of big data : Using big-data-augmented online ethnography to study candidate–candidate interaction at election time
2017
The paper proposes big-data-augmented ethnography as a novel mixed-methods approach to studying political discussions in a hybrid media system. Using such empirical setup, the authors examined candidate–candidate online interaction during election campaigning. Candidate–candidate interaction crossing party boundaries is scarce and occurs in the form of negative campaigning via social media, with the shaming of rival candidates and engaging in battles with them. The authors posit that ethnographic observations can be used to contextualize the computational analysis of large data sets, while computational analysis can be applied to validate and generalize the findings made through ethnography…
Dynamics in Interaction in Bilingual Team Teaching: Examples from a Finnish Preschool Classroom
2018
The current study aims to explore team teaching as it is manifested in bilingual interactional patterns in a preschool classroom in Finland. The data was collected in a preschool classroom where a bilingual pedagogy in Finnish (majority language) and Swedish (minority language) was implemented with monolingual Finnishspeaking children. Video recordings were made while two teachers with different predefined language roles were team teaching a class of 20 children during two circle times. A two-level analytic model was developed: on the macro level activity types, participant roles (type of leadership) and language allocation (the teachers’ relative use of Finnish and Swedish) were identified…
The impact of consumer local engagement on local store patronage and customer satisfaction
2017
This paper examines the drivers of local grocery retail patronage. Drawing on institutional and social network theory literature, we develop a framework to investigate how consumers’ personal values and engagement with local communities affect their satisfaction and local store patronage. We test our model with survey data on 1504 Finnish consumers. Our results show that the relationship between customer local engagement and local retail patronage is indirect rather than direct, and it is mediated by the vitality of local services, social interaction, and consumer satisfaction.
‘Interesting but scary’ : Customers' perceived value of MyData
2022
Digitalisation has facilitated saving data in various warehouses. While Big Data is a new form of capital that is often considered an asset for organisations, the potential value of data to customers has seldom been addressed. This chapter discusses MyData (personified and personalised data) and aims to increase our understanding of its benefits and the value created when customers use their own data. The empirical data for this paper were collected from customers of a large retail organisation that adopted the practice of sharing data with customers. This study has found that value accruing from customer’s shopping data is multifaceted and can be either positive (creating value) or negativ…
The impact of store atmospherics and store layout on customer behavior in a hardware store retail setting : case: do-it-yourself store
2015
Comprehensive apprehension of retail establishment’s atmosphere’s effects on its cus-tomers’ overall perceptions of the store and thus purchasing behavior is an essential goal for any retailer, yet the previous marketing literature has converged on understanding the shopping environments of mostly malls, grocery stores, furniture stores and clothing stores. A window was left open for construing a wholly different shopping environment; DIY (do-it-yourself)/ hardware/ home improvement store. Shopping environment studies rely largely on environmental psychology theories in their attempts of deciphering the effects of environment on individuals. This study is fundamentally similar in nature, by…