Search results for " technologies"
showing 10 items of 2721 documents
Noise Reduction and Gap Filling of fAPAR Time Series Using an Adapted Local Regression Filter
2014
Time series of remotely sensed data are an important source of information for understanding land cover dynamics. In particular, the fraction of absorbed photosynthetic active radiation (fAPAR) is a key variable in the assessment of vegetation primary production over time. However, the fAPAR series derived from polar orbit satellites are not continuous and consistent in space and time. Filtering methods are thus required to fill in gaps and produce high-quality time series. This study proposes an adapted (iteratively reweighted) local regression filter (LOESS) and performs a benchmarking intercomparison with four popular and generally applicable smoothing methods: Double Logistic (DLOG), sm…
Ghost stochastic resonance in FitzHugh–Nagumo circuit
2014
International audience; The response of a neural circuit submitted to a bi-chromatic stimulus and corrupted by noise is investigated. In the presence of noise, when the spike firing of the circuit is analysed, a frequency not present at the circuit input appears. For a given range of noise intensities, it is shown that this ghost frequency is almost exclusively present in the interspike interval distribution. This phenomenon is for the first time shown experimentally in a FitzHugh-Nagumo circuit.
OPTEER, un dispositif de connaissance et d’analyse territoriale par et pour les acteurs de la transition énergétique
2018
International audience; The aim of this article is to illustrate, through the implementation and exploitation of the OPTEER platform (Territorial Energy Observation and Prospective at the Regional scale), how the various tools made available to territorial actors and what collective uses of geographic information have developed. Based on his experience of more than 10 years, around which crystallized operational developments and research experiments, are also evoked the new needs related to the requirements of the implementation of energy transition and the tracks of research,development and porting envisaged to guarantee the durability of the device.; Cet article a pour objectif d’illustre…
Organisational climate and employee health outcomes: a systematic review
2019
Organisational climate, particularly safety climate, has been documented as a crucial element in promoting occupational health and safety. However, most previous studies have focused more on safety issues (e.g., injuries and accidents) rather than health outcomes (e.g., illnesses, stress, etc). A comprehensive review is also lacking in relation to understanding the organisational climate–health relationship between different levels of analysis, different data sources and different analytical procedures. We conducted a systematic review to investigate previous scholarly contributions to organisational climate and health. The reviewed articles were obtained from three databases: ISI Web of Kn…
Hypervisor-Based White Listing of Executables
2019
We describe an efficient system for ensuring code integrity of an operating system (OS), both its own code and application code. The proposed system can protect from an attacker who has full control over the OS kernel. An evaluation of the system's performance suggests the induced overhead is negligible. peerReviewed
Regional concentration of university graduates : The role of high school grades and parental background
2020
In this paper, we analyse long-term changes in the regional distribution and migration flows of university graduates in Finland and Sweden. This study is based on detailed longitudinal population register data, including information on high school grades and parental background. We find a distinct pattern of skill divergence across regions in both countries over the last 3 decades. The uneven distribution of human capital has been reinforced by the mobility patterns of university graduates, for whom regional sorting by high school grades and parental background is evident. Our findings indicate that traditional measures of human capital concentration most likely underscore actual regional …
The effects of socio-scientific issue based inquiry learning on pupils’ representations of landscape
2016
AbstractResearch has demonstrated that socio-scientific issues based inquiry learning has significant advantages for learning outcomes and students’ motivation. Further, a successful understanding of landscapes in environmental and geographical education can be achieved by combining informal learning environments with school education. Therefore this case study focuses on how socio-scientific issues based inquiry learning carried out in school and in a Nature Park, influences primary school pupils’ (n = 36) representations of landscapes. The pupils were asked to draw and write about landscape both before and after intervention. The data was analyzed qualitatively and quantitatively to inves…
Optimal Spectral Wavelengths for Discriminating Orchard Species Using Multivariate Statistical Techniques
2019
Sustainable management of orchard fields requires detailed information about the tree types, which is a main component of precision agriculture programs. To this end, hyperspectral imagery can play a major role in orchard tree species mapping. Efficient use of hyperspectral data in combination with field measurements requires the development of optimized band selection strategies to separate tree species. In this study, field spectroscopy (350 to 2500 nm) was performed through scanning 165 spectral leaf samples of dominant orchard tree species (almond, walnut, and grape) in Chaharmahal va Bakhtiyari province, Iran. Two multivariable methods were employed to identify the optimum wavelengths:…
Surrogate-assisted multicriteria optimization: Complexities, prospective solutions, and business case
2017
Complexity in solving real-world multicriteria optimization problems often stems from the fact that complex, expensive, and/or time-consuming simulation tools or physical experiments are used to evaluate solutions to a problem. In such settings, it is common to use efficient computational models, often known as surrogates or metamodels, to approximate the outcome (objective or constraint function value) of a simulation or physical experiment. The presence of multiple objective functions poses an additional layer of complexity for surrogate-assisted optimization. For example, complexities may relate to the appropriate selection of metamodels for the individual objective functions, extensive …
Technological and Economic Factors Determining ICT Level : Evidence from Rural Micro-Businesses in Democratic Republic of Congo
2018
The Democratic Republic of Congo (DRC) is the 11th largest country in the world although wars have devastated the economics of the country. In this vast but poor area, there are a lot of small businesses, particularly in agriculture. Therefore, focusing on small enterprises and their use of Information and Communication Technologies (ICT) can be a key issue in enhancing the nation's infrastructure, communications, social relations and economy. This research aims at increasing our understanding of these issues together by analysing the effects of ICT in micro‐level businesses in a developing country. The research focused on the rural neighbourhood of Ngandanjike in the area of Mbujimayi in s…