Search results for " Modeling"

La Cappella Palatina di Palermo: Misura, Interpretazione, Rappresentazione

2012

Lo studio che segue è incentrato sull'analisi delle vicende costruttive della Cappella Palatina nel Palazzo Reale di Palermo, costruita per volontà di Ruggero II nella prima metà del XII secolo. La peculiarità della Cappella è quella di aver mantenuto pressoché inalterato i caratteri spaziali dell’interno attraverso i secoli; tale peculiarità ha fatto si che la Cappella sia stata oggetto di studi molto approfonditi condotti da storici dell’arte a partire dalla del XIX secolo fino ai nostri giorni. Lo studio intende porsi come contributo alla conoscenza della Cappella, alla interpretazione di alcune questioni rimaste irrisolte, come stimolo ausiliare per successivi studi, attraverso gli stru…

3D numerical modeling of an anthropogenic sinkhole in the Marsala area of western Sicily

2013

The role of the tidal and wind forces on the hydrodynamic flow pattern in the Augusta Harbour (Italy)

2012

Semantic-based Technique for the Automation the 3D Reconstruction Process

2010

Pages: 191 to 198, ISBN: 978-1-61208-104-5; International audience; The reconstruction of 3D objects based on point clouds data presents a major task in many application field since it consumes time and require human interactions to yield a promising result. Robust and quick methods for complete object extraction or identification are still an ongoing research topic and suffer from the complex structure of the data, which cannot be sufficiently modeled by purely numerical strategies. Our work aims at defining a new way of automatically and intelligently processing of 3D point clouds from a 3D laser scanner. This processing is based on the combination of 3D processing technologies and Semant…

3D production pipeline in game development

2012

3D-tuotanto on merkittävä osa esimerkiksi peli- ja elokuvateollisuutta, jotka ovat itsessään suuria teollisuudenaloja. Näillä aloilla työprosesseja voidaan kuvata tuotantolinjastoina. 3D-tuotantolinjastot rakentuvat sillä työskentelevistä tekijöistä, näiden työnkuluista ja tässä työssä käytettävistä työkaluista. Tuotantolinjastoillaon tehostettu ja järkeistetty toimintaa. Tämän tutkielman tavoitteena on selvittää 3D-tuotantolinjojen merkitys pelikehitykselle ja tarkastella siihen kuuluvaa tuotantoprosessia. Asiaa tarkastellaan tässä tutkielmassa tekemällä katsaus alan kirjallisuuteen sekä kuvaamalla yksinkertainen malli tuotantolinjastoille. 3D production has grown to be major part of the d…

Impiego di 3D Web-service e software open-source nel rilievo di reperti archeologici: valutazioni metriche

2013

The Structure From Motion (SFM) algorithms derived from Computer Vision community make image-based techniquesa competitive and user friendly approach to obtain 3D information of real objects. These algorithms have been implemented in many 3D web-service and open source softwareto develop free instruments for the reconstruction of very detailed 3D digital models. Their useare becoming very common above all in archaeological studies but their potentiality for metric application have not been tested at all.The aim of the work is to investigate the quality and the accuracy of 3D models obtained through 3D web-service and SFM open source software.Different tests have been performed using some 3D…

Sensitivity of 3He NMR parameters to the proximity of heterocyclic rings. The helium–furan dimer

2014

The potential of NMR technique in probing the interaction between a noble gas atom (used as a spectroscopic probe) and five-membered heterocyclic systems was theoretically studied. Selected 3He NMR parameters of free noble gas atom and its dimer were calculated using density functional theory with three functionals (M06-2X, CAM-B3LYP, and APFD), combined with dedicated polarization-consistent basis sets, and critically compared with theoretical high level calculations from the literature. The change of sotropic nuclear magnetic shielding of free noble gas atom in the presence of furan (3He placed above he middle of the ring and used as NMR probe) increased with its proximity to the heterocy…

Bim and architectural heritage: Towards an operational methodology for the knowledge and the management of cultural heritage

2016

The study aims to answer the growing need for virtuously organize informational apparatuses related to Cultural Heritage. We propose a methodology that integrates multidisciplinary processes of interaction with information aimed at survey, documentation, management, knowledge and enhancement of historic artifacts. It is needed to review and update the procedure of instrumental data acquisition, standardization and structuring of the acquired data in a three-dimensional semantic model as well as the subsequent representability and accessibility of the model and the related database. If the use of Building Information Modeling has in recent years seen a consolidation in the procedures and the…

Quality Control in 3D Printing: Accuracy Analysis of 3D-Printed Models of Patient-Specific Anatomy

2021

As comparative data on the precision of 3D-printed anatomical models are sparse, the aim of this study was to evaluate the accuracy of 3D-printed models of vascular anatomy generated by two commonly used printing technologies. Thirty-five 3D models of large (aortic, wall thickness of 2 mm, n = 30) and small (coronary, wall thickness of 1.25 mm, n = 5) vessels printed with fused deposition modeling (FDM) (rigid, n = 20) and PolyJet (flexible, n = 15) technology were subjected to high-resolution CT scans. From the resulting DICOM (Digital Imaging and Communications in Medicine) dataset, an STL file was generated and wall thickness as well as surface congruency were compared with the original …

A dual process model to predict adolescents’ screen time and physical activity

2021

OBJECTIVE: Many adolescents report a lack of physical activity (PA) and excess screen time (ST). Psychological theories aiming to understand these behaviours typically focus on predictors of only one behaviour. Yet, behaviour enactment is often a choice between options. This study sought to examine predictors of PA and ST in a single model. Variables were drawn from dual process models, which portray behaviour as the outcome of deliberative and automatic processes. DESIGN: 411 Finnish vocational school students (age 17-19) completed a survey, comprising variables from the Reasoned Action Approach (RAA) and automaticity pertaining to PA and ST, and self-reported PA and ST four weeks later. M…