62,792 research outputs found
Downlink Space–Time Spreading Using Interference Rejection Codes
No full textIn this paper, the authors will investigate the performance of a loosely synchronized (LS) code-based space–time spreading (STS) scheme in comparison to that of classic Walsh code and pseudonoise code-based STS when communicating over dispersive Nakagami-m multipath channels. Closed-form formulas are derived for characterizing the bit-error-rate performance as a function of the number of resolvable paths L and the number of users K. Our numerical results suggest that the employment of LS code-based STS scheme is beneficial in a low-user-load and low-dispersion channel scenario, where a near-single-user performance can be achieved without a multiuser detector. Index Terms—Code-division multiple access (CDMA), Gaussian approximation, interference-free window (IFW), large area synchronized (LAS) codes, loosely synchronized (LS) codes, Nakagami-m fading
Wei L, Songchang S, Huiyu L, Huibin H, Gang C, Junping W. Global characteristics and trends of research on polycystic ovary syndrome from 2004 to 2019: Based on bibliometric analysis combined with information visualization analysis
No full textWei L, Huibin H, Junping W, Gang C, Guangda X.Global characteristics and trends of research on polycystic ovary syndrome from 2004 to 2019: Based on bibliometric analysis combined with information visualization analysi
Measurement of w-InN/h-BN Heterojunction Band Offsets by X-Ray Photoemission Spectroscopy
No full textX-ray photoelectron spectroscopy has been used to measure the valence band offset (VBO) of the w-InN/h-BN heterojunction. We find that it is a type-II heterojunction with the VBO being -0.30 +/- A 0.09 eV and the corresponding conduction band offset (CBO) being 4.99 +/- A 0.09 eV. The accurate determination of VBO and CBO is important for designing the w-InN/h-BN-based electronic devices
FIGURE 3, A–H. Elatostema androstachyum W. T. Wang Y. G. Wei & A in Additions to the Flora of China: three new species of Elatostema (Urticaceae) from Guangxi
No full textFIGURE 3, A–H. Elatostema androstachyum W. T. Wang Y. G. Wei & A. Monro: A, habit; B, Staminate stem; C, Staminate inflorescence (seen from the side); D, Staminate bracteoles; E, Staminate flower; F, Pistillate inflorescence (seen from beneath); G, Pistillate flower with pistillate bracteoles; H, Achene; I, Stipule. (A–D, G–H Illustration by Ying-Bao Sun from holotype; E–F Illustration by Wen-Hong Lin from isotype; I Illustration by Fang Wen from isotype).Published as part of Wei, Yi-Gang, Monro, A.K. & Wang, Wen-Tsai, 2013, Additions to the Flora of China: three new species of Elatostema (Urticaceae) from Guangxi, pp. 1-12 in Phytotaxa 147 (1) on page 6, DOI: 10.11646/phytotaxa.147.1.1, http://zenodo.org/record/510017
Siobla pseudoplesia Niu & Wei 2012
No full textSiobla pseudoplesia Niu & Wei, 2012 (Figs 2 g, 2 h, 5 c, 5 d, 6 j–n, 9 h, 9 u, 10 w, 10 x) Siobla pseudoplesia Niu et al., 2012: 410. f #, type locality: Mt. Shennongjia, Hubei (China). Distribution. China (Ningxia, Shaanxi, Shanxi, Henan, Hubei, Sichuan). Remarks. The species is similar to S. acutitheca Niu & Wei, 2010 but differs from it in the ovipositor sheath distinctly shorter than middle tibia, the apical sheath very narrow in lateral view and acute at apex, the middle breadth of apical sheath about half breadth of the apex of hind tibia; the serrulae weakly sclerotized and almost flat, the 10 th serrula with 10–12 minute teeth; the postocellar area as broad as long; the interspaces between punctures on mesonotum microsculptured, almost mat; the abdominal tergite 1 weakly microsculptured, tergites 2–9 hardly microsculptured; and the first pulvillus small, distinctly shorter than half apical breadth of metabasitarsus.Published as part of Niu, Gengyun & Wei, Meicai, 2013, Revision of the Siobla formosana group (Hymenoptera: Tenthredinidae), pp. 41-68 in Zootaxa 3746 (1) on page 51, DOI: 10.11646/zootaxa.3746.1.2, http://zenodo.org/record/28530
Siobla pseudoplesia Niu & Wei 2012
No full textSiobla pseudoplesia Niu & Wei, 2012 (Figs 2 g, 2 h, 5 c, 5 d, 6 j–n, 9 h, 9 u, 10 w, 10 x) Siobla pseudoplesia Niu et al., 2012: 410. f #, type locality: Mt. Shennongjia, Hubei (China). Distribution. China (Ningxia, Shaanxi, Shanxi, Henan, Hubei, Sichuan). Remarks. The species is similar to S. acutitheca Niu & Wei, 2010 but differs from it in the ovipositor sheath distinctly shorter than middle tibia, the apical sheath very narrow in lateral view and acute at apex, the middle breadth of apical sheath about half breadth of the apex of hind tibia; the serrulae weakly sclerotized and almost flat, the 10 th serrula with 10–12 minute teeth; the postocellar area as broad as long; the interspaces between punctures on mesonotum microsculptured, almost mat; the abdominal tergite 1 weakly microsculptured, tergites 2–9 hardly microsculptured; and the first pulvillus small, distinctly shorter than half apical breadth of metabasitarsus.Published as part of Niu, Gengyun & Wei, Meicai, 2013, Revision of the Siobla formosana group (Hymenoptera: Tenthredinidae), pp. 41-68 in Zootaxa 3746 (1) on page 51, DOI: 10.11646/zootaxa.3746.1.2, http://zenodo.org/record/28530
A Higher-Order Energy Expansion to Two-Dimensional Singularly Neumann Problems
No full textOf concern is the
following singularly perturbed semilinear elliptic problem
\begin{equation*}
\left\{ \begin{array}{c}
\mbox{ in }\\
\mbox{ in and on },
\end{array}
\right.
\end{equation*}
where is a bounded domain in with smooth
boundary , is a small constant and
. Associated with the
above problem is the energy functional defined by
\begin{equation*}
J_{\epsilon}[u]:=\int_{\Omega}\left(\frac{\epsilon^2}{2}{|\nabla
u|}^2 +\frac{1}{2}u^2 -F(u)\right)dx
\end{equation*}
for , where .
Ni and Takagi (\cite{nt1}, \cite{nt2}) proved that for a single
boundary spike solution , the following asymptotic
expansion holds:
\begin{equation*}
(1) \ \ \ \ \ \ \ \ J_{\epsilon}[u_{\epsilon}]=\epsilon^{N}
\left[\frac{1}{2}I[w]-c_1 \epsilon
H(P_{\epsilon})+o(\epsilon)\right],
\end{equation*}
where is the energy of the ground state, is a
generic constant, is the unique local maximum point
of and is the boundary mean
curvature function at . Later,
Wei and Winter (\cite{ww3}, \cite{ww4}) improved the result and
obtained a higher-order expansion of :
\begin{equation*}
(2) \ \ \ \ \ \ J_{\epsilon}[u_{\epsilon}]=\epsilon^{N}
\left[\frac{1}{2}I[\omega]-c_{1} \epsilon
H(P_{\epsilon})+\epsilon^2 [c_2(H(P_\epsilon))^2 +c_{3}
R(P_\epsilon)]+o(\epsilon^2)\right],
\end{equation*}
where and are generic constants and
is the scalar curvature at . However, if , the
scalar curvature is always zero. The expansion (2) is no longer sufficient to distinguish spike locations with same mean curvature.
In this paper, we consider
this case and assume that . Without loss of generality, we may assume that the
boundary near P\in\partial\Om is represented by the graph . Then we have the following higher order expansion of
\begin{equation*}
(3) \ \ \ \ \ J_\epsilon [u_\epsilon]
=\epsilon^N \left[\frac{1}{2}I[w]-c_1
\epsilon H({P_\epsilon})+c_2 \epsilon^2(H({P_\epsilon}))^2 ]
+\epsilon^3
[P(H({P_\epsilon}))+c_3S({P_\epsilon})]+o(\epsilon^3)\right],
\end{equation*}
where H(P_\ep)= \rho_{P_\ep}^{''} (0) is the curvature, is a polynomial,
, , and , , are generic real
constants and S(P_\epsilon)= \rho_{P_\ep}^{(4)} (0). In
particular . Some applications of this expansion are given
Erratum: Immune landscape in Burkitt lymphoma reveals M2-macrophage polarization and correlation between PD-L1 expression and non-canonical EBV latency program (Infect Agents Cancer (2020) 15: 28 DOI: 10.1186/s13027-020-00292-w)
No full textFollowing publication of the original article [1], the authors identified an error in the author name of Wenbin Wei The incorrect author name is: Wenbin Wi The correct author name is: Wenbin Wei The author group has been updated above and the original article [1] has been corrected
Calcium Aluminate Composites with Controlled Duplex Structure: II. Microstructural Development and Mechanical Properties
No full textCultural identities as reflected in the literature of the Northern and Southern dynasties period (4th-6th centuries A.D.)
Full text linkDuring the period of the Northern and Southern dynasties of China identity questions became serious in a society thrown into disorder by political, religious and ethnic problems. This thesis uses three books written in the sixth century to
discuss how educated Chinese faced identity problems and how they dealt with them.
The Buddhist monk Huijiao, dealt with the problems of sinifying a foreign religion. He constructed many different identities in addition to the Buddhist one for the monks in his book Gaoseng zhuan, (Lives of Eminent Monks), a collection of biographies of Buddhist monks, to bring Buddhism closer to Chinese tradition and more acceptable by Confucian standards. Through the identity construction he
also made responses to anti-Buddhist ideas.
Yang Xuanzhi's Luoyang qielan ji, (Record of the Monasteries of Luoyang), deals with the identity problems of Chinese officials serving a Xianbei regime in
the north and of the short-lived capital of the Northern Wei in Luoyang. Yang reconstructed a Chinese identity for the lost capital as a true heir of Chinese tradition, as were the emperors, princes and officials who lived there. He created an identity defined not by ethnicity but by culture.
Yan Zhitui's Tanshi jiaxun, (Family Instruction of the Yan Clan), is a book which tells his descendants how to construct and maintain the future identity of his
own family. He drew on his own experience of recovering from repeated political catastrophes to set out an identity that would help the family to survive disordered times and maintain their status in society
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