Results 41 to 50 of about 883,994 (287)

Simple-direct-injective modules

Journal of Algebra, 2014
A module \(M\) over a ring is said to be simple-direct-injective if for any two simple submodules \(A\) and \(B\) of \(M\) with \(A\cong B\) and \(B\subset^\oplus M\), we have \(A\subset^\oplus M\). In the paper under review some well-studied rings are characterized using simple-direct-injective modules.
Camillo, Victor, Ibrahim, Yasser, Yousif, Mohamed, Zhou, Yiqiang   +3 more
openaire   +2 more sources

GPI-Based Secrecy Rate Maximization Beamforming Scheme for Wireless Transmission With AN-Aided Directional Modulation

IEEE Access, 2018
In a directional modulation network, a general power iterative (GPI) based beamforming scheme is proposed to maximize the secrecy rate (SR), where there are two optimization variables required to be optimized. The first one is the useful precoding vector
Hai Yu, Simin Wan, Wenlong Cai, Ling Xu, Xiaobo Zhou, Jin Wang, Yongpeng Wu, Feng Shu, Jiangzhou Wang, Jianxin Wang   +9 more
doaj   +1 more source

On direct sums of Baer modules

Journal of Algebra, 2009
A ring \(R\) is called Baer if the left annihilator of every nonempty subset of \(R\) is generated by an idempotent. In a general module theoretic setting, the concept of a Baer module was defined by the present authors [in Commun. Algebra 32, No. 1, 103-123 (2004; Zbl 1072.16007)] in terms of its endomorphism ring. Indeed, a right \(R\)-module \(M_R\)
Rizvi, S. Tariq, Roman, Cosmin S.
openaire   +2 more sources

Maximum Euclidean distance network coded modulation for asymmetric decode-and-forward two-way relaying

, 2013
Network coding (NC) compresses two traffic flows with the aid of low-complexity algebraic operations, hence holds the potential of significantly improving both the efficiency of wireless two-way relaying, where each receiver is collocated with a ...
Chen, Wei, Hanzo, Lajos, Cao, Zhigang
core   +1 more source

Power Allocation Strategy of Maximizing Secrecy Rate for Secure Directional Modulation Networks

IEEE Access, 2018
In this paper, given the beamforming vector of confidential messages and the artificial noise (AN) projection matrix and total power constraint, a power allocation(PA) strategy of maximizing secrecy rate (Max-SR) is proposed for secure directional ...
Siming Wan, Feng Shu, Jinhui Lu, Guan Gui, Jun Wang, Guiyang Xia, Yijin Zhang, Jun Li, Jiangzhou Wang   +8 more
doaj   +1 more source

Directing projective modules [PDF]

Archiv der Mathematik, 1993
Let \(A\) be a finite dimensional algebra over a field \(K\). By a module \(M\) we mean a right \(A\)-module of finite length. If \(M_ 1\) and \(M_ 2\) are indecomposable modules, we write \(M_ 1\preceq M_ 2\) if there exists a sequence \(M_ 1=X_ 1\to X_ 2\to \cdots\to X_ m=M_ 2\) of nonisomorphisms between indecomposable modules \(X_ 1,\dots,X_ m ...
Happel, Dieter, Ringel, Claus Michael
openaire   +2 more sources

Strong modulation instability in a silicon–organic hybrid slot waveguide [PDF]

, 2015
In this paper, we investigate the strong modulation instability (MI) at telecommunication band in a silicon-organic hybrid slot waveguide. The organic material of polymer poly (bis para-toluene sulfonate) of 2, 4-hexadiyne 1, 6 diol (PTS), which has high
Kang, Z, Yan, B, Wu, Q, Zhang, Xianting, Yu, Chongxiu, Farrell, G, Yan, Binbin, Yuan, Jinhui, Zhang, X, Wu, Qiang, Yu, C, Wang, K, Sang, X, Yuan, J, Wang, Kuiru, Farrell, Gerald, Sang, Xinzhu, Kang, Zhe   +17 more
core   +1 more source

Extracellular vesicles released by human retinal pigment epithelium mediate increased polarised secretion of drusen proteins in response to AMD stressors

Journal of Extracellular Vesicles, 2021
Age‐related macular degeneration (AMD) is a leading cause of blindness worldwide. Drusen are key contributors to the etiology of AMD and the ability to modulate drusen biogenesis could lead to therapeutic strategies to slow or halt AMD progression.
Miguel Flores‐Bellver, Jason Mighty, Silvia Aparicio‐Domingo, Kang V. Li, Cui Shi, Jing Zhou, Hannah Cobb, Patrick McGrath, German Michelis, Patricia Lenhart, Ganna Bilousova, Søren Heissel, Michael J. Rudy, Christina Coughlan, Andrew E. Goodspeed, S. Patricia Becerra, Stephen Redenti, M. Valeria Canto‐Soler   +17 more
doaj   +1 more source

Residual tail twisting in ascidian larvae is stabilized by asymmetric myofibrils that resist bilateral symmetry restoration

FEBS Letters, EarlyView.
Ascidian Ciona larvae initially show strong clockwise tail twisting, which is largely corrected during development. However, a small residual twist remains. This study shows that organized helical myofibrils in tail muscles mechanically stabilize this residual asymmetry, preventing complete restoration of bilateral symmetry and revealing how embryos ...
Yuki S. Kogure, Misaki K. Nishio, Satoru Okuda, Kohji Hotta   +3 more
wiley   +1 more source

Bidirectional wireless power/data transfer via magnetic field

The Journal of Engineering, 2022
Recently, inductive power transfer (IPT) system has been used for wireless charging of electric vehicles (EVs). However, most of them only treat the issue of single directional wireless power transfer (WPT).
Jia‐Jing Kao, Chun‐Liang Lin, Chih‐Cheng Huang, Yen‐Ting Kuo   +3 more
doaj   +1 more source