Search results for "NETWORKING"
showing 10 items of 1776 documents
Dynamic Computation Offloading Scheme for Fog Computing System with Energy Harvesting Devices
2020
Fog computing is considered as a promising technology to meet the ever-increasing computation requests from a wide variety of mobile applications. By offloading the computation-intensive requests to the fog node or the central cloud, the performance of the applications, such as energy consumption and delay, are able to be significantly enhanced. Meanwhile, utilizing the recent advances of social network and energy harvesting techniques, the system performance could be further improved. In this paper, we take the social relationships of the energy harvesting MDs into the design of computational offloading scheme in fog computing. With the objective to minimize the social group execution cost…
Content and language integrated learning
2014
This special issue of The Language Learning Journal is devoted to Content and Language Integrated Learning, frequently referred to by its acronym CLIL in Europe, but also elsewhere of late. CLIL is...
LANGUAGE POLICY AND PLANNING
2000
The field of language policy and planning is clearly a sub-field within applied linguistics. It generally does not draw heavily on formal linguistics, except for aspects of corpus and status planning. However, it does draw extensively from a range of disciplines in order to plan, implement, and evaluate language policies that respond to the needs of stake holders of various types. Despite continuous development of the field, aspects of language policy and planning need to be developed further. One of the key areas where policy can be enhanced considerably is in the area of policy and planning evaluation. This direction of inquiry is also relevant to a number of other areas within applied li…
Hands-on tasks in CLIL science classrooms as sites for subject-specific language use and learning
2015
This paper is concerned with content and language integrated learning (CLIL), i.e. classrooms where a foreign or second language (L2) is used as the means of instruction and where content and language learning objectives merge. More specifically, it explores the potential of hands-on tasks in CLIL chemistry and physics lessons to serve as sites for using and learning subject-specific language, conceptualised as both special concepts and terminology as well as subject-specific ways of constructing meaning. Using discourse analysis, attention was directed to hands-on tasks as well as pre-task and post-task phases. The findings indicate that despite the evident content orientation in the tasks…
Partial repetitions as other-initiations of repair in second language talk: Re-establishing understanding and doing learning
2014
Abstract This conversation analytical paper examines other-initiated repair sequences in everyday interactions between first and second language speakers of Finnish. More specifically, it focuses on sequences that are initiated by a second language speaker by repeating a part of the trouble source turn and shows that the repetitions are recurrently treated as actions indicating specific language-related problems of understanding. The analysis suggests that the linguistic asymmetry in second language interactions is a resource that is drawn upon in situations in which other resources for action formation and recognition are not sufficient. In addition, the analysis illustrates why and how ce…
A Multi-Phase Decode-and-Forward Transmission Protocol in Cognitive Relay Networks: Outage Analysis and Relay Power Allocation
2015
Consider an underlay cognitive relay network with multiple source and destination pairs and that a decode-and-forward scheme is adopted at the relay. We propose a multi-phase transmission protocol in this paper which involves cooperation among source, relay and destination nodes. Given perfect interference elimination before decoding at the destination nodes, we derive closed-form expressions for outage probability calculation over Rayleigh fading channels. Furthermore, the optimal relay power allocation factor which leads to minimal outage probability is determined. Numerical results reveal the conditions under which satisfactory performance can be achieved based on the proposed scheme.
Hop-derived fraction rich in beta acids and prenylflavonoids regulates the inflammatory response in dendritic cells differently from quercetin: unvei…
2021
Dendritic cells (DCs) represent a heterogeneous family of immune cells that link innate and adaptive immunity and their activation is linked to metabolic changes that are essential to support their activity and function. Hence, targeting the metabolism of DCs represents an opportunity to modify the inflammatory and immune response. Among the natural matrices, Humulus lupulus (Hop) compounds have recently been shown to exhibit immunomodulatory and anti-inflammatory activity. This study aimed to evaluate the ability of specific Hop fractions to modulate DCs metabolism after stimulation with lipopolysaccharide (LPS) by an untargeted metabolomics approach and compare their effect with flavonol …
Technology-Enhanced Organizational Learning: A Systematic Literature Review
2019
Part 9: Learning and Education; International audience; E-Learning systems are receiving ever increasing attention in, academia, businesses as well as in public administrations. Managers and employee who need efficient forms of training as well as learning flow within the organization, do not have to gather in a place at the same time, or to travel far away for attending courses. Contemporary affordances of e-learning systems allow them to perform different jobs or tasks for training courses according to their own scheduling, as well as collaborate and share knowledge and experiences that results rich learning flow within the organization. The purpose of this article is to provide a systema…
Impact of LoRa Imperfect Orthogonality: Analysis of Link-Level Performance
2018
In this letter, we focus on the evaluation of link-level performance of LoRa technology, in the usual network scenario with a central gateway and high-density deployment of end-devices. LoRa technology achieves wide coverage areas, low power consumption and robustness to interference thanks to a chirp spread-spectrum modulation, in which chirps modulated with different spreading factors (SFs) are quasi-orthogonal. We focus on the performance analysis of a single receiver in presence of collisions. First, we analyze LoRa modulation numerically and show that collisions between packets modulated with different SFs can indeed cause packet loss if the interference power received is strong enough…
LoRa Technology Demystified: From Link Behavior to Cell-Level Performance
2020
In this paper we study the capability of LoRa technology in rejecting different interfering LoRa signals and the impact on the cell capacity. First, we analyze experimentally the link-level performance of LoRa and show that collisions between packets modulated with the same Spreading Factor (SF) usually lead to channel captures, while different spreading factors can indeed cause packet loss if the interference power is strong enough. Second, we model the effect of such findings to quantify the achievable capacity in a typical LoRa cell: we show that high SFs, generally seen as more robust, can be severely affected by inter-SF interference and that different criteria for deciding SF allocati…