Results 61 to 70 of about 167,608 (323)

Direct SUSY dark matter detection-Theoretical rates due to the spin

, 2004
The recent WMAP data have confirmed that exotic dark matter together with the vacuum energy (cosmological constant) dominate in the flat Universe.
Chen Wen-Fang, Gari M, Gari M, Gari M, Kim Y, Liu L, Lu D H, Lu Ding-Hui, Malov S, Saito K, Strauch S (JLab E93-049 collaboration), Zhang X B, Zhang Y J, Zschiesche D   +13 more
core   +1 more source

Artificial-Noise-Aided Secure Transmission With Directional Modulation Based on Random Frequency Diverse Arrays

IEEE Access, 2017
In this paper, a random frequency diverse array-based directional modulation with artificial noise (RFDA-DM-AN) scheme is proposed to enhance physical layer security of wireless communications.
Jinsong Hu, Shihao Yan, Feng Shu, Jiangzhou Wang, Jun Li, Yijin Zhang   +5 more
doaj   +1 more source

A remark on direct products of modules [PDF]

Proceedings of the American Mathematical Society, 1962
Sei \(\{A^{(i)}\}\) eine Folge nichttrivialer \(R\)-Moduln \((R\) sei ein Integritätsbereich aber kein Körper, alle \(A^{(i)}\) seien unitär) und \(A_n = \prod_{i=n+1}^\infty A^{(i)}\), \(A = A_0= \prod_{i=1}^\infty A^{(i)}\). Sei ferner \(\{C_\alpha\}\) eine Familie torsionsfreier, reduzierter \(R\)-Moduln \((\alpha\) durchlaufe eine Index-Menge \(I)\)
openaire   +2 more sources

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

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

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

A methionine‐lined active site governs carbocation stabilization and product specificity in a bacterial terpene synthase

FEBS Letters, EarlyView.
This study reveals a unique active site enriched in methionine residues and demonstrates that these residues play a critical role by stabilizing carbocation intermediates through novel sulfur–cation interactions. Structure‐guided mutagenesis further revealed variants with significantly altered product profiles, enhancing pseudopterosin formation. These
Marion Ringel, Carl P. O. Helmer, Shani Zev, Ronja Driller, Emily Buhr, Markus Reinbold, Renana Schwartz, Gabriel Foley, Mikael Boden, Daniel Garbe, Gerhard Schenk, Dan Thomas Major, Bernhard Loll, Thomas Brück   +13 more
wiley   +1 more source

Bandwidth of linearized electrooptic modulators [PDF]

, 1998
Many schemes have been proposed to make high dynamic range analog radio frequency (RF) photonic links by linearizing the transfer function of the link's modulator. This paper studies the degrading effects of finite transit time and optical and electrical
Bridges, William B., Cummings, Uri V.
core   +1 more source

AAA+ protein unfoldases—the Moirai of the proteome

FEBS Letters, EarlyView.
AAA+ unfoldases are essential molecular motors that power protein degradation and disaggregation. This review integrates recent cryo‐electron microscopy (cryo‐EM) structures and single‐molecule biophysical data to reconcile competing models of substrate translocation.
Stavros Azinas, Marta Carroni
wiley   +1 more source

Channel Optical Waveguides and Directional Couplers in GaAs -- Imbedded and Ridged [PDF]

, 1973
Two-channel imbedded directional couplers were fabricated with proton implantation, yielding complete light transfer in 2 mm. Ridged channel guides were fabricated by ion-micromachining epitaxial layers, and a method of directional coupling was ...
Garmire, E., Garvin, H. L., Hunsperger, R. G., Somekh, S., Yariv, A.   +4 more
core   +2 more sources