Results 61 to 70 of about 575,267 (307)

Spatial mapping of hepatitis C prevalence in recent injecting drug users in contact with services. [PDF]

open access: yes, 2011
In developed countries the majority of hepatitis C virus (HCV) infections occur in injecting drug users (IDUs) with prevalence in IDUs often high, but with wide geographical differences within countries.
Morongiu, A   +17 more
core   +1 more source

Bid Strategies of Primary Users in Double Spectrum Auctions

open access: yesTsinghua Science and Technology, 2012
Extensive research in recent years has shown that dynamic spectrum sharing is a promising approach to address the artificial spectrum scarcity problem by improving spectrum utilization.
Jikai Yin, Qi Shi, Li Li
doaj   +1 more source

A Bibliometric Analysis of Publications in Uremic Toxins From 1991 to 2024

open access: yesTherapeutic Apheresis and Dialysis, EarlyView.
ABSTRACT Background Uremic toxins are a growing area of research in nephrology, with significant implications in the progression and treatment of chronic kidney disease (CKD) and the management of end‐stage kidney disease (ESKD). This bibliometric analysis aims to evaluate the global research trends, key contributors, and the impact of publications in ...
Yuh‐Shan Ho   +7 more
wiley   +1 more source

Detección de espectro para radio cognitiva Spectrum sensing for cognitive radio

open access: yesIngeniare: Revista Chilena de Ingeniería, 2012
Este artículo centra su atención en la capa física de las redes de radio cognitiva (CR), es decir, en las técnicas que se utilizan para detectar la presencia o ausencia de usuarios licenciados en las diferentes bandas del espectro electromagnético.
Luis Fernando Pedraza   +2 more
doaj  

Therapeutic Apheresis in Nigeria: A Multi‐Center Summary of Abstracts From the Inaugural Nigerian Society for Apheresis Scientific Meeting

open access: yesTherapeutic Apheresis and Dialysis, EarlyView.
ABSTRACT Background Therapeutic apheresis (TA) is an established treatment modality for hematologic, neurologic, and immunologic disorders, yet access remains severely limited in sub‐Saharan Africa. Donor apheresis, including platelet apheresis collection from healthy donors, represents an important complementary modality supporting blood product ...
Nosa Bazuaye   +33 more
wiley   +1 more source

Analysis of the M/M/N/N Queue with Two Types of Arrival Process: Applications to Future Mobile Radio Systems

open access: yesJournal of Applied Mathematics, 2012
The queueing system considered is essentially a M/M/N/N queue where two types of users compete for the N resources. The users may have different arrival and service rates and are denoted as primary or secondary users.
Peter J. Smith   +3 more
doaj   +1 more source

Dynamic Spectrum Access With Physical Layer Security: A Game-Based Jamming Approach

open access: yesIEEE Access, 2018
The paper investigates the issue of physical layer security in spectrum overlay networks. First, in order to enhance security performance of the primary system, the secondary users are motivated to act as friendly jamming nodes with the compensation of ...
Yanjun Yao   +3 more
doaj   +1 more source

Effectiveness of Resistance Intradialytic Exercise Compared to Aerobic Intradialytic Exercise for Patients With Chronic Kidney Disease: A Randomized Controlled Clinical Trial

open access: yesTherapeutic Apheresis and Dialysis, EarlyView.
ABSTRACT Background Patients with chronic kidney disease undergoing hemodialysis commonly experience reduced physical function, fatigue, poor sleep quality, and impaired health‐related quality of life. Intradialytic exercise has been proposed as a non‐pharmacological strategy to improve these outcomes.
Klebson da Silva Almeida   +6 more
wiley   +1 more source

Auditory training strategies for adult users of cochlear implants [PDF]

open access: yes, 2013
There has been growing interest recently in whether computer-based training can improve speech perception among users of cochlear implants (Fu et al., 2005; Oba et al., 2011; Ingvalson et al., 2013). This paper reports a series of experiments which first
Stacey, PC, Summerfield, AQ
core  

Dynamic Spectrum Sharing Models for Cognitive Radio Aided Ad Hoc Networks and Their Performance Analysis [PDF]

open access: yes, 2011
In this paper, two dynamic spectrum sharing models are proposed, namely a Markov-chain model and a queue-based model in order, to evaluate the performance of CRAHNs, where the shared Primary Channels (PCs) are complemented by unshared Secondary Channels (
Liu, Gan   +5 more
core   +1 more source

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