Tecnologia i comunicació: Recent submissions
Now showing items 161-180 of 648
Educational data mining and learning analytics: differences, similarities, and time evolution
Technological progress in recent decades has enabled people to learn in different ways. Universities now have more educational models to choose from, i.e., b-learning and e-learning. Despite the increasing opportunities ...
Horizontal collaboration in freight transport: concepts, benefits, and environmental challenges
Since its appearance in the 1990s, horizontal collaboration (HC) practices have revealed themselves as catalyzers for optimizing the distribution of goods in freight transport logistics. After introducing the main concepts ...
Lossless Image Data Embedding in Plain Areas
This letter presents a lossless data hiding scheme for digital images which uses an edge detector to locate plain areas for embedding. The proposed method takes advantage of the well-known gradient adjacent prediction ...
Optimization of aircraft boarding processes considering passengers' grouping characteristics
Aircraft boarding is one of the critical processes affecting the turnaround time when a plane is at an airport. In this work, the aircraft boarding problem is studied with the aim of designing a boarding strategy that ...
Popularization through press advertisements: mobile telephony in Spain (1994-1999)
This paper explores the combined effects of everyday life technological devices and advertisements in constituting an efficient way to scientific popularization. We, therefore, analyze mobile telephony advertisements ...
A Biased-Randomized Algorithm for Redistribution of Perishable Food Inventories in Supermarket Chains
In supermarkets, perishable products need to be sold to consumers before a given deadline, after which their monetary value is significantly diminished or even completely lost. In the case of valuable products that should ...
Seguretat vial a Sant Vicenç dels Horts : anàlisi dels accidents de trànsit del 2014
Treball de Fi de Grau en Criminologia i Polítiques Públiques de Prevenció. Curs 2014-2015
On complexity of branching droplets in electrical field
Decanol droplets in a thin layer of sodium decanoate with sodium chloride exhibit bifurcation branching growth due to interplay between osmotic pressure, diffusion and surface tension. We aimed to evaluate if morphology ...
CEUR Workshop Proceedings: Preface
Preface of the Proceedings of the 16th International Workshop on OCL and Textual Modelling (OCL 2016) held in Saint-Malo, France, October 2, 2016.
Internet of things area coverage analyzer (ITHACA) for complex topographical scenarios
The number of connected devices is increasing worldwide. Not only in contexts like the Smart City, but also in rural areas, to provide advanced features like smart farming or smart logistics. Thus, wireless network ...
Analyzing the effects of emotion management on time and self-management in computer-based learning
Emotional learning involves the acquisition of skills to recognize and manage emotions, develop care and concern for others, make responsible decisions, establish positive relationships, and handle challenging situations ...
A semi-automated system for recognizing prior knowledge
Adaptive e-learning systems are able to automatically generate personalized learning paths from the students' profile. Generally, the student profile is updated with information about knowledge the student has acquired, ...
Automatic prediction of facial trait judgments: Appearance vs. structural models
Evaluating other individuals with respect to personality characteristics plays a crucial role in human relations and it is the focus of attention for research in diverse fields such as psychology and interactive computer ...
Distributed PID-based scheduling for 6TiSCH networks
Industrial low-power networks are becoming the nexus of operational technologies and the Internet thanks to the standardization of networking layer interfaces. One of the main promoters of this shift is the IETF 6TiSCH WG, ...
A survey of graph-modification techniques for privacy-preserving on networks
Recently, a huge amount of social networks have been made publicly available. In parallel, several definitions and methods have been proposed to protect users' privacy when publicly releasing these data. Some of them were ...
An Interdomain PKI Model Based on Trust Lists
The penetration of PKI technology in the market is moving slowly due to interoperability concerns. Main causes are not technical but political and social since there is no trust development model that appropriately deals ...
Cryptographic Energy Costs are Assumable in Ad Hoc Networks
Performance of symmetric and asymmetric cryptography algorithms in small devices is presented. Both temporal and energy costs are measured and compared with the basic functional costs of a device. We demonstrate that ...
Attack classification schema for smart city WSNs
Peer-reviewed
Editorial: At the crossroads: Lessons and challenges in computational social science
The interest of physicists in economic and social questions is not new: during the last decades, we have witnessed the emergence of what is formally called nowadays sociophysics and econophysics that can be grouped into ...
