Search results for "git"
showing 10 items of 7116 documents
2D motif basis applied to the classification of digital images
2016
The classification of raw data often involves the problem of selecting the appropriate set of features to represent the input data. Different types of features can be extracted from the input dataset, but only some of them are actually relevant for the classification process. Since relevant features are often unknown in real-world problems, many candidate features are usually introduced. This degrades both the speed and the predictive accuracy of the classifier due to the presence of redundancy in the set of candidate features. Recently, a special class of bidimensional motifs, i.e. 2D motif basis has been introduced in the literature. 2D motif basis showed to be powerful in capturing the r…
Robust Light Field Watermarking by 4D Wavelet Transform
2020
Unlike common 2D images, the light field representation of a scene delivers spatial and angular description which is of paramount importance for 3D reconstruction. Despite the numerous methods proposed for 2D image watermarking, such methods do not address the angular information of the light field. Hence the exploitation of such methods may cause severe destruction of the angular information. In this paper, we propose a novel method for light field watermarking with extensive consideration of the spatial and angular information. Considering the 4D innate of the light field, the proposed method incorporates 4D wavelet for the purpose of watermarking and converts the heavily-correlated chann…
Student teachers’ responsible use of ICT: Examining two samples in Spain and Norway
2020
Information and communication technology (ICT) has become an important component of initial teacher education (ITE) in Europe and in the continuous professional development of practising teachers. The development of professional digital competence (PDC) is emerging as an essential part of teacher education. Due to the increasing use of ICT and the growing number of online teaching and learning resources, the responsible use of ICT has become one of the key aspects of PDC. For the purpose of this paper, the responsible use of ICT includes privacy issues, cyberbullying and the ability to evaluate digital content. We examine Spanish and Norwegian student teachers' perceived competence in priva…
Transmediating argumentation : Students composing across written essays and digital videos in higher education
2016
This comparative study examined how university students built an argument in written essays and multimodal digital videos, and how their argumentation transmediated across these two mediums. Data analysis involved 1) analysis of content in both written essays and digital videos; 2) the development of transmediation visualizations to elucidate how ideas were transformed from essays into videos; and 3) multimodal analysis to understand the communicative affordances and constrains for argumentation with each medium. The findings revealed that the most common type of content in both essays and videos was supportive argumentation; however, the videos did not include any counter-argumentation. St…
Using skeleton and Hough transform variant to correct skew in historical documents
2020
International audience; As a main part of several document analysis systems, Skew estimation represents one of the major research challenges, particularly in case of historical documents exploration. In this paper, we propose an original skew angle detection and correction technique. Morphological Skeleton is introduced to considerably diminish the amount of data by eliminating the redundant pixels and preserving only the central curves of the image components. Next, the proposed method uses Progressive Probabilistic Hough Transform (PPHT) to find image lines. At the end, a specific procedure is applied in order to measure the global skew angle of the document image from these identified li…
The composition of data economy : a bibliometric approach and TCCM framework of conceptual, intellectual and social structure
2022
Purpose The data economy mainly relies on the surveillance capitalism business model, enabling companies to monetize their data. The surveillance allows for transforming private human experiences into behavioral data that can be harnessed in the marketing sphere. This study aims to focus on investigating the domain of data economy with the methodological lens of quantitative bibliometric analysis of published literature. Design/methodology/approach The bibliometric analysis seeks to unravel trends and timelines for the emergence of the data economy, its conceptualization, scientific progression and thematic synergy that could predict the future of the field. A total of 591 data between 200…
An efficient method for fully automatic 3D digitization of unknown objects
2013
Our goal is to develop a complete and automatic scanning strategy with minimum prior information about the object shape. We aim to establish a methodology for the automation of the 3D digitization process. The paper presents a novel approach to determine the Next Best View (NBV) for an efficient reconstruction of highly accurate 3D models. Our method is based on the classification of the acquired surfaces into Well Visible and Barely Visible combined with a best view selection algorithm based on mean shift, which avoids unreachable positions. Our approach is applicable to all kinds of range sensors. To prove the efficiency and the robustness of our method, test objects are first scanned man…
CRM in the digital age: implementation of CRM in three contemporary B2B firms
2015
Purpose – The purpose of this study was to contribute to the current discussion on digitization in companies’ marketing from a customer relationship management (CRM) perspective by examining the role and objectives of CRM and the exploitation of social media to serve the objectives of CRM in contemporary business-to-business (B2B) companies. Design/methodology/approach – The data are collected through semi-structured themed interviews with key marketing/sales managers from three B2B firms. Findings – CRM seems to be moving closer to the company’s core activity and becoming everybody’s business to a greater extent than ever before, but its main goal, to enhance customer relationships, will …
Enrique Dupuy de Lôme: sus Estudios sobre el Japón (1895) y el Imperialismo decimonónico / Enrique Dupuy de Lôme: his ‘Estudios sobre el Japón’ (1895…
2017
This study analyzes the work ‘Estudios sobre el Japon’ (Studies about Japan), written by the Spanish diplomat Enrique Dupuy de Lome in 1895. These three elements (work, author and date) show us interconnections between the United States, Japan and Spain by the end of the 19th century. During this time, imperialism and nation states were taking part in the international context. From the Spanish point of view, these elements constituted a threat to the legitimacy of Spain in the Atlantic and Pacific´s colonies, or as Dupuy argues, a danger. Although our priority is to analyze Estudios sobre el Japon providing a chronology of the development of the different parts of the book, at the end, it …
The Existence of Solutions for Local Dirichlet (r(u),s(u))-Problems
2022
In this paper, we consider local Dirichlet problems driven by the (r(u),s(u))-Laplacian operator in the principal part. We prove the existence of nontrivial weak solutions in the case where the variable exponents r,s are real continuous functions and we have dependence on the solution u. The main contributions of this article are obtained in respect of: (i) Carathéodory nonlinearity satisfying standard regularity and polynomial growth assumptions, where in this case, we use geometrical and compactness conditions to establish the existence of the solution to a regularized problem via variational methods and the critical point theory; and (ii) Sobolev nonlinearity, somehow related to the spac…