Results 21 to 30 of about 23,666 (240)

Alternative Awaiting and Broadcast for Two-Way Relay Fading Channels [PDF]

, 2012
We investigate a two-way relay (TWR) fading channel where two source nodes wish to exchange information with the help of a relay node. Given traditional TWR protocols, transmission rates in both directions are known to be limited by the hop with lower ...
Jianquan Liu, Meixia Tao, Senior Member, Youyun Xu   +3 more
core   +1 more source

Linear Precoders for Non-Regenerative Asymmetric Two-way Relaying in Cellular Systems [PDF]

, 2013
Two-way relaying (TWR) reduces the spectral-efficiency loss caused in conventional half-duplex relaying. TWR is possible when two nodes exchange data simultaneously through a relay.
Budhiraja, Rohit, KS, Karthik, Ramamurthi, Bhaskar   +2 more
core   +1 more source

TOF underground accurate positioning technology based on message multiplexing

Gong-kuang zidonghua, 2019
In view of problems that symmetric-double-sided two-way ranging (SDS-TWR) method had low ranging efficiency and poor expansibility and there was still room for improvement in the ranging efficiency and positioning system capacity of asymmetric-double ...
CHEN Kang, WANG Jun, BAO Jianjun, WANG Wei, XU Shouquan, CHEN Nan   +5 more
doaj   +1 more source

A two-way regularization method for MEG source reconstruction [PDF]

, 2012
The MEG inverse problem refers to the reconstruction of the neural activity of the brain from magnetoencephalography (MEG) measurements. We propose a two-way regularization (TWR) method to solve the MEG inverse problem under the assumptions that only a ...
Huang, Jianhua Z., Li, Zhimin, Shen, Haipeng, Tian, Tian Siva   +3 more
core   +4 more sources

Energy Efficient Space–Time Line Coded Regenerative Two-Way Relay Under Per-Antenna Power Constraints

IEEE Access, 2018
In multiple-input multiple-output (MIMO) systems, per-antenna power constraint (PAPC) has been considered to enhance the power efficiency of the multiple power amplifiers.
Jingon Joung
doaj   +1 more source

The effects of the Two-Week Rule on NHS colorectal cancer diagnostic services: A systematic literature review

BMC Health Services Research, 2006
Background The Two-Week Rule (TWR) was introduced to ensure that all patients with a suspected colorectal cancer (CRC) saw a hospital specialist within 14 days of an urgent GP referral.
Hutchings Hayley A, Thorne Kymberley, Elwyn Glyn   +2 more
doaj   +1 more source

Uncovering the Origins of Spiral Structure by Measuring Radial Variation in Pattern Speeds [PDF]

, 2009
Current theories of spiral and bar structure predict a variety of pattern speed behaviors, calling for detailed, direct measurement of the radial variation of pattern speeds.
Andersen, Arimoto, Bureau, Buta, Combes, Combes, Combes, Corsini, Crosthwaite, Crosthwaite, Debattista, Debattista, Dubinski, Garcia-Burillo, Helfer, Henry, Huchtmeier, Hunter, Ideta, Jimenez-Vicente, Jog, Jog, Jurcevic, Kamphuis, Knapen, Korchagin, Martinez-Garcia, Masset, Masset, Meidt, Meidt, Merrifield, Michael R. Merrifield, Petitpas, Rand, Rautiainen, Rautiainen, Regan, Richard J. Rand, Sellwood, Sellwood, Sellwood, Sharon E. Meidt, Sygnet, Thilker, van der Hulst, van der Kruit, Verdes-Montenegro, Vila-Costas, Waller, Walter, Weinberg, Westpfahl, Wong, Zimmer   +54 more
core   +3 more sources

Experimental investigation of nanographene mixed in the copper electrodes for electrical discharge machining [PDF]

Engineering and Technology Journal
Nanotechnology in electrode manufacturing is a new technique to enhance the machinability of materials that are difficult to machine using electrical discharge machining (EDM).
Osama Sabbar, Ali Khleif, Baraa Albaghdadi   +2 more
doaj   +1 more source

Influence of graphene coating in electrical discharge machining with an aluminum electrode

Journal of the Mechanical Behavior of Materials, 2023
Since the cost of electrodes in electrical discharge machining (EDM) is usually too high, it leads to a significant increase in the production cost.
Pham Van Dong, Shirguppikar Shailesh, Huu Phan Nguyen, Thangaraj Muthuramalingam, Le Thi Phuong Thanh, Trong Ly Nguyen, Ganachari Vaibhav   +6 more
doaj   +1 more source

Prediction and optimization of tool wear rate during electric discharge machining of Al/Cu/Ni alloy using adaptive neuro-fuzzy inference system

Heliyon, 2020
Aluminum (Al)-copper (Cu)-nickel (Ni) alloy is a versatile material with lightweight and excellent strength. It also possesses properties such as superior corrosion resistance, fatigue strength. These alloys are essential in sectors viz.
Mangesh Phate, Aditya Bendale, Shraddha Toney, Vikas Phate   +3 more
doaj   +1 more source