Results 41 to 50 of about 144,701 (287)

Clean Cut (adaptive, multimodal surgical infection prevention programme) for low‐resource settings: a prospective quality improvement study

BJS (British Journal of Surgery), EarlyView., 2020
Clean Cut is a multimodal, adaptive, checklist‐based infection prevention programme designed to improve compliance with six critical perioperative infection prevention practices. After introducing the programme at five hospitals in Ethiopia, compliance with critical infection prevention standards significantly improved and the relative risk of ...
J. A. Forrester, N. Starr, T. Negussie, D. Schaps, M. Adem, S. Alemu, D. Amenu, N. Gebeyehu, T. Habteyohannes, F. Jiru, A. Tesfaye, E. Wayessa, R. Chen, A. Trickey, S. Bitew, A. Bekele, T. G. Weiser   +16 more
wiley   +1 more source

Interference Mitigation Technique for Coexistence of Pulse-Based UWB and OFDM

EURASIP Journal on Wireless Communications and Networking, 2008
Ultra-wideband (UWB) is a useful radio technique for sharing frequency bands between radio systems. It uses very short pulses to spread spectrum. However, there is a potential for interference between systems using the same frequency bands at close range.
Tetsushi Ikegami, Kohei Ohno
doaj   +2 more sources

A randomised pilot equivalence trial to evaluate diamagnetically enhanced transdermal delivery of key ground substance components in comparison to an established transdermal non-steroidal anti-inflammatory formulation in males with prior knee injury.

PLoS ONE, 2019
ObjectiveThis pilot study assessed the efficacy of a knee guard device, which used magnetophoresis to transdermally deliver Glucosamine, Chondroitin and Hyaluronic Acid in a cohort of individuals with prior knee injury.
Bill Vicenzino, Peter Lawrenson, Asaduzzaman Khan, Aiofe Stephenson, Luke Heales, Heather A E Benson, Anthony Wright   +6 more
doaj   +1 more source

Use of a guard interval in OFDM on multipath channels

Electronics Letters, 1994
The use of a guard interval in OFDM is analysed for a two path channel with white Gaussian noise. A system with zero forcing equaliser and no guard interval is used as a reference when assessing the performance. The results show that a system without a guard interval has a significantly lower bit error rate and requires less bandwidth.
A. Vahlin, N. Holte
openaire   +1 more source

Time Reversal in a MISO OFDM system: Guard Interval design, dimensioning and synchronisation aspects [PDF]

, 2012
International audienceThis article presents the way to combine TR and OFDM, either in the time domain or in the frequency domain by adding a filter at the transmitter side.
Crussière, Matthieu, Dubois, Thierry, Hélard, Maryline   +2 more
core   +2 more sources

Influence of Sample Preparation and Processing Procedures on the Thermal Diffusivity of MgO‐C Refractories

Advanced Engineering Materials, EarlyView.
The thermal diffusivity of MgO‐C refractories is highly sensitive to sample preparation and processing procedures. In this article, the effects of coking sequence, machining conditions, structural inhomogeneity, and graphite coating application on measurements using laser flash apparatus are systematically investigated.
Luyao Pan, Rhena Wulf, Till M. J. Stadtmüller, Christos G. Aneziris, Tobias M. Fieback   +4 more
wiley   +1 more source

Alamouti code based on block repetition in FBMC/OQAM systems

Digital Communications and Networks, 2022
In this paper, we address the Alamouti code in Filter-Bank Multicarrier with Offset Quadrature Amplitude Modulation (FBMC/OQAM) and propose a novel block-wise Alamouti code, in which a repeated block is designed to eliminate the imaginary interference ...
Dejin Kong, Xing Zheng, Yukang Tian, Tao Jiang, Yue Zhang   +4 more
doaj   +1 more source

Reducing the out-of-band radiation of OFDM using an extended guard interval [PDF]

IEEE 54th Vehicular Technology Conference. VTC Fall 2001. Proceedings (Cat. No.01CH37211), 2002
We investigate the spectrum, out-of-band radiation (OBR) and the use of extended guard interval (EGI) to reduce the out-of-band radiation of an OFDM signal when passing through different nonlinear devices. Spectra of the OFDM signal with different EGI lengths after passing through nonlinear devices are obtained through computer simulations ...
A. Dhammika S. Jayalath, Chintha Tellambura   +1 more
openaire   +1 more source

Analisa Simulasi Performansi Penggunaan Orthogonal Frequency Division Multiplexing pada Sistem Digital Video Broadcasting-Terrestrial [PDF]

, 2012
Orthogonal Frequency Division Multiplexing (OFDM) merupakan suatu teknik transmisi yang menggunakan beberapa buah frekuensi pembawa (multicarrier) dalam satu saluran dimana setiap frekuensi pembawa tersebut saling orthogonal (tegak lurus).
Astuti, D. W. (Dian)
core  

Discrete Mechanics and Optimal Control Applied to the Compass Gait Biped [PDF]

, 2007
This paper presents a methodology for generating locally optimal control policies for simple hybrid mechanical systems, and illustrates the method on the compass gait biped.
Ames, Aaron D., Marsden, Jerrold E., Pekarek, David   +2 more
core   +1 more source