Search results for "construct"

Adaptive Mid-Term Representations for Robust Audio Event Classification

2018

Low-level audio features are commonly used in many audio analysis tasks, such as audio scene classification or acoustic event detection. Due to the variable length of audio signals, it is a common approach to create fixed-length feature vectors consisting of a set of statistics that summarize the temporal variability of such short-term features. To avoid the loss of temporal information, the audio event can be divided into a set of mid-term segments or texture windows. However, such an approach requires to estimate accurately the onset and offset times of the audio events in order to obtain a robust mid-term statistical description of their temporal evolution. This paper proposes the use of…

Techniques and procedures for the definition of AR applications in architectural and archaeological contexts

2022

The growth and development of Augmented reality applications and their use in different contexts has been recently fostered by two factors: i) the hardware and computing power of mobile devices has been radically improved; ii) Apple and Google have released two development platforms for AR applications. AR has been a major topic in research on cultural heritage fruition for many years, but the latest developments are really promising, and they seem capable of overcoming the difficulties that have delayed the diffusion of this technology. The paper focuses the potential and criticalities of augmented reality systems used for fruition purposes in architectural and archaeological contexts. The…

Virtual and Augmented Reality in Finance: State Visibility of Events and Risk"

2021

This chapter reflected on the potential of Virtual Reality and Augmented Reality (VR / AR) technologies in supporting the dynamics of global financial systems and in addressing the grand challenges posed by unexpected events and crisis. The chapter briefly overviewed traditional VR/AR uses and described three early attempts to use 3D/ VR / AR technologies in Finance. In light of the recent financial crisis, there is a potential added valued in harnessing the use of VR/AR technologies to convey a greater visibility of the financial state (including visibility of financial risk). Various dimensions of the problem are considered. The chapter suggested a blend of service oriented computing SOC …

From the Paper to the Tablet: On the Design of an AR-Based Tool for the Inspection of Pre-Fab Buildings. Preliminary Results of the SIRAE Project

2018

Energy-efficient Buildings (EeB) are demanded in today’s constructions, fulfilling the requirements for green cities. Pre-fab buildings, which are modularly fully-built in factories, are a good example of this. Although this kind of building is quite new, the in situ inspection is documented using traditional tools, mainly based on paper annotations. Thus, the inspection process is not taking advantage of new technologies. In this paper, we present the preliminary results of the SIRAE project that aims to provide an Augmented Reality (AR) tool that can seamlessly aid in the regular processes of pre-fab building inspections to detect and eliminate the possible existing quality and ener…

Per un teatro dell'architettura e della città: teorie e pratiche di realtà aumentata alla Cité de l'architecture et du patrimoine al Palais de Chaill…

2017

Lo studio presenta gli esiti di una ricerca volta allo sviluppo di un allestimento museale con sole tecniche di realtà aumentata per la Cité de l’architecture et du patrimoine (Palais de Chaillot, Parigi). Realizzato sfruttando la recentissima piattaforma Google Tango, questo sistema permette al visitatore di accedere a contenuti multimediali e visualizzare ricostruzioni digitali 3D, appositamente elaborate, semplicemente inquadrando con uno smartphone Tango-enabled i calchi e i plastici esposti nel museo. This study presents the results of a research which aims to develop a museum exhibition planning, with interactive augmented reality techniques, at the Cité de l’architecture et du patrim…

Sealing the Cranial Base Access After Endonasal Endoscopic Approach: Reabsorption Rate of Fat Graft in the "3FTechnique".

2022

Mathematical Methods in Image Processing and Computer Vision

2016

Image processing and computer vision are growing research fields that take advantage of the increasing power or modern computers linked with sophisticated techniques coming from many fields of expertise and in particular from mathematics. We present an introduction to some problems in computer vision and image processing and to some mathematical techniques and concepts that are nowadays routinely used to approach them.

Factorial structure of recklessness: To what extent are older drivers different?

2003

This study tests whether the original factorial structure of a recklessness questionnaire can be maintained for the current Spanish population of older drivers.Our recent interest in dedicating special attention to senior citizen mobility (Monterde, 2001), is due to the impending increase of the aging population in Western countries; this has led us to reinitiate the psychometric study of the construct validity, revising and including older drivers in the psychometric aspects of those evaluation instruments that will then be used in the Spanish psycho-medical check of drivers and in research.Factorial analysis was used to determine validity.There was an appearance of a different psychologic…

Low cost three-dimensional virtual model construction for remanufacturing industry

2018

Remanufactured products can save up to 80% of production and energy costs whilst generating lower CO2 emissions. The key success factors for remanufacturing are quality, lead-time and cost. Extensive work within the industry and the detailed analysis of the remanufacturing process has shown that component inspection has significant bearing on overall productivity. Remanufacturing lacks automation because activities are predominantly manual. Automation of remanufacturing process will not only decrease the number of non-remanufacturable components, through decreasing cost and increasing consistency in quality, but also attract industries to design for remanufacture. A digital model of the com…

Autonomy Support, Psychological Needs Satisfaction, School Engagement and Academic Success: A Mediation Model

2018

School engagement is a construct of relevance in education and educational psychology, as it has been related to multiple educational constructs and outcomes: school drop-out, satisfaction with school, disruptive behavior, motivational climate, teacher-student relationships, or academic progress and achievement. The current research surveyed 2034 Angolan students and 2302 Dominican Republic students in order to predict academic achievement. The model tested was supported by the data in both samples, and the chain of explicative effects hold again in both samples. School engagement was a powerful mediator among needs satisfaction and academic success. Results are discussed in light of existi…