Search results for " access"
showing 10 items of 776 documents
Title: The Emergency Medicine Facing the Challenge of Open Science
2020
This article belongs to the Special Issue Data Reuse for Sustainable Development Goals.
The Open Innovation in Science research field: a collaborative conceptualisation approach
2020
Openness and collaboration in scientific research are attracting increasing attention from scholars and practitioners alike. However, a common understanding of these phenomena is hindered by disciplinary boundaries and disconnected research streams. We link dispersed knowledge on Open Innovation, Open Science, and related concepts such as Responsible Research and Innovation by proposing a unifying Open Innovation in Science (OIS) Research Framework. This framework captures the antecedents, contingencies, and consequences of open and collaborative practices along the entire process of generating and disseminating scientific insights and translating them into innovation. Moreover, it elucidat…
Promoting scientific integrity through open science in health psychology: results of the Synergy Expert Meeting of the European health psychology soc…
2021
The current article describes a position statement and recommendations for actions that need to be taken to develop best practices for promoting scientific integrity through open science in health psychology endorsed at a Synergy Expert Group Meeting. Sixteen Synergy Meeting participants specializing in health, social and behavioural psychology convened to discuss priority issues regarding scientific integrity promotion and open science in health psychology. The group developed a set of recommendations for researchers, gatekeepers, and research end-users. The group process followed a nominal group technique and voting system to elicit and decide on the most relevant and topical issues. Seve…
Projekta OpenAIRE 2012. gada aktualitātes un projekts OpenAIREplus
2012
Ziņojumā, kas sagatavota Open Access nedēļas semināram " Brīvpieejas e-resursu puiblicēšana: iespējas un attīstība" (2012.g. 26.oktobris), apkopota informācija par projektu OpenAIRE, tā mērķiem un galvenajiem uzdevumiem, kā arī nozīmīgākajiem 2012. gada notikumiem Eiropā un Latvijā. Prezentācijā apskatīts projekta OpenAIREplus mērķis un galvenie uzdevumi, kā arī 2012. gadā jau notikušās aktivitātes.
Projekts OpenAIRE un brīvpieejas nodrošināšana Eiropas Komisijas finansēto projektu ietvaros izstrādātajām zinātniskajām publikācijām
2011
Prezentācijā sniegts EK 7. ietvara programmas projekta OpenAIRE raksturojums, mērķi un uzdevumi, iekļauta informācija par Eiropas Komisijas Open Access nostādnēm un pētniecības rezultātu deponēšanu institucionālajos repozitārijos atbilstoši šo nostādņu prasībām.
Wireless MAC Processor Networking: A Control Architecture for Expressing and Implementing High-Level Adaptation Policies in WLANs
2013
The current proliferation of unplanned wireless local area networks (WLANs) is creating the need for implementing different adaptation strategies to improve network performance under mutating and evolving interference scenarios. In this article, we envision a new solution for expressing and implementing high-level adaptation policies in WLANs, in contrast to the current approaches based on vendor-specific implementations. We exploit the hardware abstraction interface recently proposed by the wireless medium access control (MAC) processor (WMP) architecture and some flow-control concepts similar to the Openflow model for defining MAC adaptation policies. A simple control architecture for dis…
Optical CDMA enhanced by nonlinear optics
2010
Intended for the next generation of optical access networks, OCDMA is of great interest to meet the demand of increasing the number of users per access fiber, especially as spectral phase coding increases its performance in the optical domain. This, however, requires handling broad spectra and short pulses, which are best dealt with using opto-electronic or all-optical devices instead of slower electronics. Among others, we demonstrate spectral-phase-coded OCDMA using a fiber-based saturable absorber as thresholding in the receiver.
Spectral Slicing of a Supercontinuum Source for WDM/DS-OCDMA Application
2008
WDM and optical CDMA are leading contenders to easily upgrade access network performances in terms of multiple access technique. Both methods can be used at once, using a single multiwavelength optical source. We show, numerically and experimentally, that spectral slicing of a 10-GHz pulse train broadened to a supercontinuum yields pulses suitable for use in a direct sequence optical CDMA system. Simulations with optical CDMA encoders and decoders based on superstructured fiber Bragg gratings indicate good performance can be expected.
Energy efficient resource allocation for secure OFDMA relay systems with eavesdropper
2016
In this paper, we address the energy efficient resource allocation problem for a secure orthogonal frequency division multiple access (OFDMA) relay system. In particular, we consider there is a eavesdropper near the base station (BS) which tries to overtake the information sent by BS. We formulate the joint optimization problem with the objective to optimize the energy efficiency of the considered system by considering subcarrier pairing, secret data rate and power allocation. In addition, the system can assign different priority to different users such that the security of information transmission can be guaranteed. The proposed iterative algorithm not only maximizes the system energy effi…
Joint Spectral and Energy Efficiency Optimization for Downlink NOMA Networks
2020
Non-orthogonal multiple access (NOMA) holds the promise to be a key enabler of 5G communication. However, the existing design of NOMA systems must be optimized to achieve maximum rate while using minimum transmit power. To do so, this paper provides a novel technique based on multi-objective optimization to efficiently allocate resources in the multi-user NOMA systems supporting downlink transmission. Specifically, our unique optimization technique jointly improves spectrum and energy efficiency while satisfying the constraints on users quality of services (QoS) requirements, transmit power budget and successive interference cancellation. We first formulate a joint problem for spectrum and …