Search results for "Time"
showing 10 items of 12336 documents
The periodic rural postman problem with irregular services on mixed graphs
2019
Abstract In this paper, we deal with an extension of the rural postman problem in which some links of a mixed graph must be traversed a given number of times over a time horizon. These links represent entities that must be serviced a specified number of times in some subsets of days (or periods) of the time horizon. The aim is to design a set of minimum-cost tours, one for each day/period of the time horizon, that satisfy the service requirements. We refer to this problem as the periodic rural postman problem with irregular services (PRPP–IS). Some practical applications of the problem can be found in road maintenance operations and road network surveillance, for example. In order to solve …
A Lexicon-based Approach for Sentiment Classification of Amazon Books Reviews in Italian Language
2016
We present a system aimed at the automatic classification of the sentiment orientation expressed into book reviews written in Italian language. The system we have developed is found on a lexicon-based approach and uses NLP techniques in order to take into account the linguistic relation between terms in the analyzed texts. The classification of a review is based on the average sentiment strenght of its sentences, while the classification of each sentence is obtained through a parsing process inspecting, for each term, a window of previous items to detect particular combinations of elements giving inversions or variations of polarity. The score of a single word depends on all the associated …
Mafia Methods, Extortion Dynamics and Social Responses
2016
This chapter is devoted to exploring both the empirical results and the policy proposals produced by the GLODERS project. Based on 631 cases of extortions, the Sicily and Calabria extortion database represents a relevant achievement in the field of the research on extortion racket and it is one of the main results of the GLODERS project. Gathering a great amount of information, our empirical analysis revealed the existence of several differences in the extortive conducts carried on within these two regions, which are presented. Moreover, the chapter introduces the legislation related to the crime of extortion. Social and legal responses to the phenomenon are then discussed.
Les deux faces – objective/subjective – de la mobilité sociale
2006
06062; National audience; How does objective social mobility, traditionally measured with tables of mobility drawn up by sociologists, relate to feelings about mobility, i.e., how individuals perceive, explain and appraise their social trajectory? Using a question from a survey (Insee's Formation, qualification professionnelle), subjective mobility was statistically evaluated so as to bring the two approaches to mobility together and measure the (considerable) frequency of deviations. Subjective mobility was then analyzed qualitatively on the basis of interviews conducted with respondents in the same survey. This helps us account for deviations and identify the bundle of parameters that peo…
An Overview on Effectiveness of Technology Enhanced Learning (TEL)
2017
It is necessary to introduce changes in teacher education in order to include the acquisition of competences necessary for the technology-enhanced learning process both organizing the learning process and developing new and innovative didactic means that promote learning as well as using digital technologies that nowadays has become an integral part of any teacher's and university lecturer's competence in the learning process to perform qualitatively their work. Despite the fact that teaching/learning methods used in the education system in the world have been explored, different studies on advantages and shortcomings of these methods have been performed there still are no serious reviews o…
Multi-Dimensional Acquisition, Representation, and Interaction of Cultural Heritage Tangible Assets
2018
The acquisition, digital representation and interaction of cultural heritage (CH) assets is of high interest for an accurate documentation of our cultural legacy. Detailed studies demand more information on the assets apart from the mere visual appearance or even shape of objects. In this regards, some research works can be found that combine shape with other kind of data, such as radiometric (e.g., IR, thermal radiation, etc.) or semantic information, leading to multi-Dimensional (mD) virtual objects. In this chapter, we review the state of the art of different techniques to deal with mD acquisition of CH tangible assets. We also discuss some representation (e.g., visual, sonic, etc.) and …
Analysing the effects of power swing on wind farms using instantaneous impedances
2020
Abstract Most of the grid disturbances happen due to the presence of faults and power swing. This article focuses on power swing in view of the amount of penetration of renewable energy resources especially the wind farms. There are two sections. First section approached power swing by deriving a mathematical expression which would be able to track the locus of impedance in time domain and subsequently analyze resistance and reactance simultaneously with respect to time. It used a grid comprising of generator, transmission line and load. The derived expression was compared with a power swing generated using RTDS model and the results were analyzed in R-X plane. Second section analyses the i…
Empiricism and Relationism Intertwined: Hume and Einstein’s Special Theory of Relativity
2016
Einstein acknowledged that his reading of Hume influenced the development of his special theory of relativity. In this article, I juxtapose Hume’s philosophy with Einstein’s philosophical analysis related to his special relativity. I argue that there are two common points to be found in their writings, namely an empiricist theory of ideas and concepts, and a relationist ontology regarding space and time. The main thesis of this article is that these two points are intertwined in Hume and Einstein.
VOT in French as a foreign language : A production and perception study with mono- and multilingual learners (German/Mandarin-Chinese)
2016
This study addresses the production of Voice Onset Time (VOT) in French as a foreign language (FFL). The learners are young multilingual learners who speak Mandarin Chinese as a heritage language along with German. To determine potential effects of the learners’ multilingual background, these multilingual learners were compared to three control groups: (1) monolingual German learners of FFL, (2) monolingual Mandarin Chinese learners of FFL, and (3) native speakers of French (L1). In addition, a perception experiment was carried out to find out to what extent the VOT values measured in the production data contribute to the perception of foreign accent. Our results show that multilingual lear…
An overview of research within the Genre and Multimodality framework
2017
This review article provides an overview of the research conducted within the Genre and Multimodality framework, which has been used to describe the multimodality of page-based documents and other multimodal artefacts over the past 15 years. The article explicates the motivation and inspiration for developing the framework, introduces its central theoretical concepts and presents its applications across a number of case studies. Finally, the article discusses the criticism directed towards the model and identifies avenues of future development. peerReviewed