Results 21 to 30 of about 32,700,272 (303)
IEEE Photonics Journal, 2017 An extension of the conventional dual Schottky diode-based predistortion circuit (PDC) is proposed to linearize directly modulated radio over fiber (RoF) system.
Shichao Chen +8 more
doaj +1 more source
Accessibility in Information Retrieval [PDF]
, 2008 This paper introduces the concept of accessibility from the field of transportation planning and adopts it within the context of Information Retrieval (IR). An analogy is drawn between the fields, which motivates the development of document accessibility measures for IR systems. Considering the accessibility of documents within a collection given an IR
Leif Azzopardi, Vishwa Vinay
openaire +2 more sources
IEEE Photonics Journal, 2021 A dual Fabry-Perot (FP) interferometric fiber-optic acoustic sensor based on sandwich-structure composite diaphragm is proposed, where fixed phase difference is generated by two FP interferometers (FPIs) with different cavity length.
Wanjin Zhang +6 more
doaj +1 more source
Journal of Information Science Theory and PracticeAs the academic publishing environment evolves rapidly and the open science paradigm emerges, the demand for efficient and transparent peer review is growing.
Jaemin Chung +6 more
doaj +1 more source
Ultra-long Distance Distributed Intrusion Detecting System Assisted With In-line Amplification
IEEE Photonics Journal, 2017 An ultra-long distance distributed intrusion detecting system assisted with power amplification and sensitivity enhancement is proposed and demonstrated. First, through introducing multiple bidirectional amplifiers into the unbalanced Mach–Zehnder&
Macheng Lai +7 more
doaj +1 more source
Access to Health Information. Editorial [PDF]
Yearbook of Medical Informatics, 2008 Summary Objectives To provide an editorial introduction to the 2008 IMIA Yearbook of Medical Informatics with an overview of its contents and contributors. MethodsA brief overview of the main theme of “Access to Health Information”, and an outline of the purposes, contents, format, and acknowledgment of contributions for the 2008 ...
Kulikowski, C., Geissbuhler, Antoine
openaire +2 more sources
The economics of access to literature and information [PDF]
, 2005 This paper will focus on the importance of cost and economics as a factor in access to information and literature. Both the broader macroeconomic context and the more focused microeconomic (South African) environment will be referred to.
Baker, Kim
core +1 more source
Open access indicators and information society: the Latin American case [PDF]
, 2008 Purpose – The purpose of this paper is to estimate open access penetration ratios through cross-analysis of existing social context and open access indicators in Latin America.
Bustos-Gonzalez, Atilio +3 more
core +2 more sources
PhotonicsA high-precision low-cost mid-infrared photoacoustic sensor for greenhouse composite gases based on aspherical beam shaping is proposed and demonstrated. The assembled optical source module and luminous characteristics of infrared source are innovatively
Qingping Hu +11 more
doaj +1 more source
IEEE Photonics Journal, 2018 We have proposed and experimentally demonstrated an ultrasensitive fiber-optic temperature sensor based on two cascaded Fabry–Perot interferometers (FPIs).
Jin Zhang +7 more
doaj +1 more source