Search results for "Background"
showing 10 items of 556 documents
Spectral dynamics of incoherent waves with a noninstantaneous nonlinear response
2013
We study the influence of a constant background noise on the dynamics of spectral incoherent solitons, which are incoherent structures sustained by a noninstantaneous (Raman-like) nonlinearity. As the level of the noise background increases, the incoherent wave enters a novel nonlinear regime characterized by oscillatory dynamics of the incoherent spectrum, which develop within a spectral cone during the propagation. In contrast to the conventional Raman-like spectral red shift, such incoherent spectral dynamics can be characterized by a significant spectral blue shift. On the basis of the kinetic wave theory, we derive explicit analytical expressions of these incoherent oscillatory spectra…
Film, music and induced mixed-emotion
2011
This Master's Thesis examines the relationship between film, music and induced mixed-emotion with particular focus on the effect of semantic congruency and musical background on emotion ratings. This study provides further understanding of which emotions are felt during film watching and provide an answer to whether or not there is a difference between musicians' and non-musicians' emotional reactions. A brief overview of emotion research conducted with audio and visual stimuli, as well as in film, is provided. The discussion includes the following topics: visual primacy, semantic congruency and cognitivst/emotivist theory. The difference between musicians and non-musicians as supported by …
Influence of the Cultural Background at Small and Medium Sized-Enterprises Innovations in Regional Dimension
2017
Research background: SME’s play crucial role in economy’s development. In EU they make up 99% of all enterprises and are at the forefront of technological innovations (Kotler et al., 1999, pp. 139-140; EC 2013, p. 2; Jasińska-Biliczak, 2016, p. 30). Being the flywheel for economies (Soininen et. al., 2012, p. 614) are called “hidden champions” of 20th century. Over past few years Europe-wide anal-yses (Griffin, 2004, p. 424) have emphasised the importance of investing in SME’s. Taking into consideration that cultural environment is the background to decisions: social, managerial, development (Hofstede et al., 2011, p. 46), so inno-vations, knowledge, skills and competences as well as cultur…
Company values guiding the recruitment of employees with a foreign background
2019
Purpose In this paper, the following research question is addressed: Why do business organisations recruit employees with a foreign background? This was examined in terms of the values that guide organisations and their management. The paper aims to discuss this issue. Design/methodology/approach The study focused on two businesses in Finland that are pioneers in the recruitment of immigrants. A case study approach was adopted. The research data consist of interviews and documentary data. The data were analysed using content analysis in accordance with grounded theory. Findings Companies can act as an enabling force in the integration of immigrants into the local labour market, especially …
Camouflage in arid environments: the case of Sahara-Sahel desert rodents
2020
Deserts and semi-deserts, such as the Sahara-Sahel region in North Africa, are exposed environments with restricted vegetation coverage. Due to limited physical surface structures, these open areas provide a promising ecosystem to understand selection for crypsis. Here, we review knowledge on camouflage adaptation in the Sahara-Sahel rodent community, which represents one of the best documented cases of phenotype-environment convergence comprising a marked taxonomic diversity. Through their evolutionary history, several rodent species from the Sahara-Sahel have repeatedly evolved an accurate background matching against visually-guided predators. Top-down selection by predators is therefore …
A2Ba: Adaptive Background Modelling for Visual Aerial Surveillance Conditions
2015
International audience; Background modelling algorithms are widely used to define a part of an image that most time remains stationary in a video. In surveillance tasks, this model helps to recognize those outlier objects in an area under monitoring. Set up a background model on mobile platforms (UAVs, intelligent cars, etc.) is a challenging task due camera motion when images are acquired. In this paper, we propose A2Ba, a robust method to support instabilities caused by aerial images fusing different information about image motion. We used frame difference as first approximation, then age of pixels is estimated. This latter gives us an invariability level of a pixel over time. Gradient di…
Characterization of the seismic dynamical state through joint analysis of earthquakes and seismic noise: the example of Ischia Volcanic Island (Italy)
2020
This work is devoted to the study of both earthquakes and background seismic noise at Ischia Island (Italy) recorded pre and post the Md 4.0 earthquake occurred on 21 August 2017 (18:57 UTC). We compare and characterize noise and earthquakes in terms of Independent Component Analysis, energy and polarization properties. The earthquakes' waveforms and the background noise are decomposed into a few independent components with two main common signals peaked around 1–2 and 3–4 Hz, respectively. A slight increase of the energy of the background seismic noise is observed comparing samples recorded in 2016 and 2017, whereas no variations are detected in 2017 pre and post the main ear…
Search for pair production of first or second generation leptoquarks in proton-proton collisions at sqrt(s)=7 TeV using the ATLAS detector at the LHC
2011
This paper describes searches for the pair production of first or second generation scalar leptoquarks using 35 pb−1 of proton-proton collision data recorded by the ATLAS detector at √s=7 TeV. Leptoquarks are searched in events with two oppositely-charged muons or electrons and at least two jets, and in events with one muon or electron, missing transverse momentum and at least two jets. After event selection, the observed yields are consistent with the predicted backgrounds. Leptoquark production is excluded at the 95% CL for masses MLQ<376 (319) GeV and MLQ<422 (362) GeV for first and second generation scalar leptoquarks, respectively, when assuming the branching fraction of a leptoquark…
Seasonal Modulation of the $^7$Be Solar Neutrino Rate in Borexino
2017
We detected the seasonal modulation of the $^7$Be neutrino interaction rate with the Borexino detector at the Laboratori Nazionali del Gran Sasso in Italy. The period, amplitude, and phase of the observed time evolution of the signal are consistent with its solar origin, and the absence of an annual modulation is rejected at 99.99\% C.L. The data are analyzed using three methods: the sinusoidal fit, the Lomb-Scargle and the Empirical Mode Decomposition techniques, which all yield results in excellent agreement.
The access and success in the different higher education tracks in France for female and male youths of North African backgrounds
2016
International audience; Despite their preference for selective vocational programmes, many youths of North African backgrounds, including female youths, are diverted toward academic university programmes. To what extent do successful or unsuccessful applications to a chosen programme determine higher education outcomes and transition to work, particularly for female North African youths? Our results show that unemployment is higher for drop-outs for both North African men and women compared to their French counterparts.