Search results for " artifact"
showing 10 items of 63 documents
Le cimetière du second Âge du fer de la Tournière à Lailly (Yonne) : nouvelle analyse des fouilles anciennes
2021
International audience; Cette étude présente de manière critique les découvertes qui ont été faites à la fin du xix e siècle et au début du xx e siècle à Lailly La Tournerie (Yonne). Elle propose un classement typologique et chronologique de tous les objets mis au jour par catégorie fonctionnelle, ainsi que la reconstitution, pour la première fois, de plusieurs ensembles clos. Elle a ainsi permis de proposer une évolution de ce cimetière entre le second quart du v e siècle (La Tène A ancienne) et la première décennie du ii e siècle avant J.-C. (La Tène C1). L'analyse des pratiques funéraires a également été abordée à l'aide d'un dépouillement systématique des rares données existantes. Leur …
NEW APPLICATIONS IN THE USE OF CELLULOSE PULP FOR THE INTEGRATION OF WOODEN SUPPORTS
2017
Cellulose pulp, mainly utilized as a support for cleaning stone material, in this study, is proposed as a filler for wooden supports. In the last 10 years, pulp has been used in many restoration works carried out in the laboratory of the Diocesan Museum (MDP) in Palermo, including both wooden sculptures and panel paintings. These artworks, exhibited in the MDP, are constantly monitored in order to evaluate the effectiveness of cellulose pulp as a filler, assessing its durability and bio-receptivity. In particular, structural characteristics, drying time, shrinkage, loss in weight, affinity to the pigments, etc., were simultaneously evaluated. Tests were also carried out on artificially aged…
Kvalitātes nosacījumi kontrastmammogrāfijā pie krūts vēža izmeklējumiem
2022
Autora izvēlētā bakalaura darba tēma - “Kvalitātes nosacījumi kontrastmamogrāfijā pie krūts vēža izmeklējumiem”. Bakalaura darbs sastāv no ievada daļas, teorētiskās daļas, pētnieciskās daļas, secinājumiem un ieteikumiem. Bakalaura darbā apskatīta un analizēta literatūra par krūts dziedzera anatomiju un fizioloģiju, krūts dziedzeru onkopatoloģijām, kontrastmamogrāfijas izmeklējumiem, izmeklējumu artefaktiem un protokolu vadlīnijām. Darba autore izvirzīja darba mērķi: noskaidrot kontrastmamogrāfijas nozīmi krūts vēža diagnostikā. Kā pētniecības metode tika izmantota - kvalitatīvā kontentanalīze.
Sketcching sonic interactions
2019
This chapter provides an overview of methods and practices for sketching sound in interactive contexts. The chapter stresses the role and importance of producing and interacting with provisional sound representations in conceptual sound design. The cognitive benefits of embodied sound sketching are discussed and outlined by means of practical examples and basic exercises. In particular, vocalizations and gestures are proposed as primary cognitive artifacts available to sound designers to enact sonic impressions and displays, cooperatively.
Evolution of Digital Innovations Based on Entrepreneurial Opportunities
2019
Digital innovations evolve unpredictable as the characteristics of digital technology provide diverse opportunities for entrepreneurs. The flexible, malleable, and unbounded nature of digital technologies makes the evolution process unpredictable as entrepreneurs can rarely estimate beforehand how new digital technologies might impact the evolution process. It is also hard to predict how customers will react to the changes enabled by digital technologies. In this longitudinal case study, we were interested in different competitive moves that entrepreneurs apply to effectuate changes in the evolutionary pathway of digital innovations. Further, we were fascinated by how the evolution of digit…
Value Co-Creation and Co-Destruction in an IS Artifact: Contradictions of Geocaching
2016
In this paper we study how value co-creation and value co-destruction are present in an IS artifact. We apply the concept of contradiction (structural tension) to study an IS artifact, geocaching. Based on the analysis of interview data and discussion forum postings, we identified the following contradictions: i) introducing secret society to outsiders, ii) geocaching by breaking its rules, iii) experiencing nature while consuming it, iv) building community occurs with competition. These contradictions show that value co-creation and co-destruction interacts in this IS artifact. Based on the results, we propose that IS research should adopt the concepts of value co-creation and co-destructi…
Experimental study on the effects of physical training on the defibrillation threshold
2011
Background: Chest compression artifacts during cardiopulmonary resuscitation (CPR) deteriorate the rhythm diagnosis of automated external defibrillators (AED). Cardiopulmonary resuscitation must therefore be interrupted for a reliable shock/no-shock decision. However, these hands-off intervals adversely affect the defibrillation success, and, in addition, pauses in chest compressions compromise circulation. An accurate diagnosis of the rhythmwhile performing CPR is therefore needed to minimize these hands-off intervals. Methods: The characteristics of the CPR artifact are very variable, and the artifact presents an important spectral overlap with human cardiac arrest rhythms. Consequently, …
Impact of the Tiloop Bra mesh in CT images and dose delivery in breast radiotherapy
2012
A new titanized breast mesh, TiLOOP Bra, is currently available for implantation in patients who require radiotherapy. The purpose of this work is to study the dosimetric effect of the presence of a TiLOOP Bra mesh on breast radiation treatment and radiographic imaging. The dosimetric effects have been measured for three X‐ray energies: 1.25 MeV, 6 MV and 18 MV, using radiochromic films placed at three different depths. These depths are representative of mesh location in breast during the radiotherapy treatment and hence, are of interest in this study. In order to assess the disturbance in a radiographic image, different computed tomographic (CT) studies of the mesh have been performed. The…
EEG Data Quality: Determinants and Impact in a Multicenter Study of Children, Adolescents, and Adults with Attention-Deficit/Hyperactivity Disorder (…
2021
Electroencephalography (EEG) represents a widely established method for assessing altered and typically developing brain function. However, systematic studies on EEG data quality, its correlates, and consequences are scarce. To address this research gap, the current study focused on the percentage of artifact-free segments after standard EEG pre-processing as a data quality index. We analyzed participant-related and methodological influences, and validity by replicating landmark EEG effects. Further, effects of data quality on spectral power analyses beyond participant-related characteristics were explored. EEG data from a multicenter ADHD-cohort (age range 6 to 45 years), and a non-ADHD sc…
Advances in microgeophysics for engineering and cultural heritage
2009
A large number of unconventional investigations have been implemented, tested, and validated in the field of microgeophysics, with the aim being to solve specific diagnostic and/or monitoring problems regarding civil engineering and cultural heritage studies. The investigations were carried out using different tomographic 2D and 3D approaches as well as different energy sources, namely sonic, ultrasonic and electromagnetic (radar) waves, electric potential fields, and infrared thermography. Many efforts have been made to modify instruments and procedures in order to improve the resolution of the surveys as well as to greatly reduce the time of the measurements without any loss of informatio…