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| 1 | Polarization-maintaining few mode fiber composed of a central circular-hole and an elliptical-ring core显示文摘We propose a novel waveguide design of polarization-maintaining few mode fiber(PM-FMF) supporting ≥10non-degenerate modes, utilizing a central circular air hole and a circumjacent elliptical-ring core. The structure endows a new degree of freedom to adjust the birefringence of all the guided modes, including the fundamental polarization mode. Numerical simulations demonstrate that, by optimizing the air hole and elliptical-ring core,a PM-FMF supporting 10 distinctive polarization modes has been achieved, and the effective index difference Δn_(eff) between the adjacent guided modes could be kept larger than 1.32 × 10^(-4) over the whole C +L band. The proposed fiber structure can flexibly tailored to support an even larger number of modes in PM-FMF(14-mode PM-FMF has been demonstrated as an example), which can be readily applicable to a scalable mode division multiplexing system. | JIAJIA ZHAO MING TANG KYUNGHWAN OH ZHENHUA FENG CAN ZHAO RUOLIN LIAO SONGNIAN FU PERRY PING SHUM DEMING LIU | 2017 | Photonics Research2017，5，3： | 9 |
| 2 | Activation of liver X receptors promotes inflammatory cytokine mRNA degradation by upregulation of tristetraprolin显示文摘肝 X 受体(LXR ) 有反煽动性的性质。LXR 是否在煽动性的 cytokine 表示的 post-transcriptional 控制起一个作用,不是清楚的。这里,我们第一鉴别合成 LXR 收缩筋 T0901317 支持了 IL-1, IL-6 和 TNF mRNA 降级。而且, T0901317 使动摇通过它的 3-untranslated 区域的 TNF mRNA。另外, T0901317 增加了 tristetraprolin (TTP ) 的表示,当与 siRNA 反对 TTP 废除了调停 T0901317 的煽动性的 cytokine mRNA 腐烂时。有趣地, T0901317 镇压了 ERK1/2 和 p38 的导致 LPS 的 phosphorylation 在 THP-1 巨噬细胞的激活 mitogen 的蛋白质 kinase (MAPK ) 。这里介绍的证据证实有 T0901317 的 LXR 激活禁止 ERK1/2 和 p38 MAPK 的 phosphorylation,在 TTP 的增加的表示和 LPS 导致煽动性的 cytokine mRNAs 的腐烂的可能的结果。 | Ji Xiao Quan Chen Dan Tang Weiwei OU Jiazheng Wang1 Zhongcheng Mo Chaoke Tang Liangyu Peng Deming Wang | 2017 | Acta Biochimica et Biophysica Sinica2017，49，3： | 7 |
| 3 | Effects of vegetation cover on recruitment of Ulmus pumila L. in Horqin Sandy Land, northeastern China显示文摘Understanding the effects of vegetation cover on seedling survival is helpful for promoting vegetation restoration in environmentally fragile zones. This study was conducted in the desertified, moving sand dunes of Horqin Sandy Land, Inner Mongolia, northeastern China. We hyphothesized that(1) seed density(i.e., number/m2) increases as vegetation cover increases, and(2) there will be more surviving seedlings in locations with higher vegetation covers. Total vegetation cover and initial densities of seeds, germinated seeds and surviving seedlings of Ulmus pumilia were evaluated under various vegetation covers in trying to clarify the effects of vegetation cover on the early stages of the plant life history. In agreement with the first hypothesis, initial seed densities were greater(P<0.05) under higher vegetation covers. The relationship between vegetation cover and initial seed density was represented by a quadratic regression, where a threshold occurred with a vegetation cover of 36%(P<0.05). The higher total vegetation covers, however, did not result in increased densities of germinated seeds(P>0.05), which on average represented 16.7% of initial seed densities. Even more, three months after the study initiation, total vegetation covers were similar(P>0.05) at all positions in the dunes, and they determined a similar number(P>0.05) of surviving seedlings at those positions(i.e. the second hypothesis had to be rejected). The mean number of seed- lings that survived at all positions was only 4.5% of germinated seeds. The number of surviving elm seedlings(0 to 1.7 seedlings/m2) under various vegetations covers(12.2% to 20.8%) at all dune positions by late summer would most likely not contribute to vegetation restoration in the study area. | DeMing JIANG Yi TANG Carlos A BUSSO | 2014 | Journal of Arid Land2014，6，3： | 5 |
| 4 | Overfitting effect of artificial neural network based nonlinear equalizer: from mathematical origin to transmission evolution显示文摘Overfitting effect of artificial neural network(ANN)based nonlinear equalizer(NLE)leads to a trap of bit error ratio(BER)overestimation in optical fiber communication system,especially when the performance is evaluated by the commonly-used pseudo-random binary sequence(PRBS).First,we mathematically investigate the PRBS generation and Gray code mapping rules,in comparison with the use of Mersenne Twister random sequence(MTRS).Under the condition of a symbol erasure channel,we identify that ANN can recognize both the PRBS generation and symbol mapping rules,by increasing the weights of NLE at specific positions,whereas the MTRS is currently safe owing to the limited input length of current ANN based NLE.Then,we design four channel models of fiber optical transmission to experimentally examine various impairments on the evolution of overfitting effect.When both the additive white Gaussian noise(AWGN)channel and the bandwidth limited channel are considered,the mitigation of overfitting becomes possible by the use of pruned PRBS(P-PRBS)training set with removing the generation and mapping rules determined input symbols.However,as for both the chromatic dispersion(CD)uncompensated channel and the CD managed channel,the overfitting effect becomes serious,because both CD and fiber nonlinearity induced inter-symbol interference(ISI)is beneficial for ANN to identify the PRBS symbol rules.Finally,possible solutions to mitigate the overfitting effect are summarized. | Zheng YANG Fan GAO Songnian FU Ming TANG Deming LIU | 2020 | Science China(Information Sciences)2020，63，6： | 2 |
| 5 | Depth-related influences on biodegradation rates of phenanthrene in polluted marine sediments of Puget Sound, WA显示文摘 | Yinjie J. Tang Shelly D. Carpenter Jody W. Deming Barbara Krieger-Brockett | 2006 | Marine Pollution Bulletin2006，，11： | 1 |
| 6 | Designing supply contracts:contract type and information asymmetry显示文摘 | Corbett C Zhou Deming Tang C | 2004 | Management Science2004，50，4： | 1 |
| 7 | Controlling coal fires using the three-phase foam and water mist techniques in the Anjialing Open Pit Mine, China显示文摘 | Zhenlu Shao Deming Wang Yanming Wang Xiaoxing Zhong Xiaofei Tang Xiangming Hu | 2015 | Natural Hazards2015，，2： | 1 |
| 8 | Designing supply contracts: Contract type and information asymmetry 显示文摘 | Charles J Corbett Deming Zhou Christopher S Tang | 2004 | Management Science2004，50，4： | 1 |
| 9 | Indentation creep behavior of AE42 and Ca-containing AE41 alloys 显示文摘 | Huang Deming Chen Yungui Tang Yongbai | 2007 | Materials Letters2007，61，： | 1 |
| 10 | Controlled release of nitrate and sulfate to enhance anaerobic bioremediation of phenanthrene in marine sediments显示文摘 | TANG Y J J CARPENTER S DEMING J | 2005 | Environmental Science & Technology2005，39，： | 1 |
| 11 | Designing Supply Contracts: Contract Type and Information Asymmetry显示文摘 | Charles J. Corbett Deming Zhou Christopher S. Tang | 2004 | Management Science2004，，： | 1 |
| 12 | Controlled Release of Nitrate and Sulfate to Enhance Anaerobic Bioremediation of Phenanthrene in Marine Sediments显示文摘 | Tang Y J J Carpenter S Deming J | 2005 | Environmental Science & Technology2005，39，： | 1 |
| 13 | Experimental investigation of the performance of a novel foam generator for dust suppression in underground coal mines显示文摘 | Hetang Wang Deming Wang Yan Tang | 2014 | Advanced Powder Technology2014，，25： | 1 |
| 14 | Designing supply eoutraets: coutract type and information asymmetry 显示文摘 | Corbett C Zhou Deming Tang C | 2004 | Management Science2004，50，4： | 1 |
| 15 | Designing supply contracts : Contract type and information asymmetry显示文摘 | Charles J Corbett Deming Zhou Christopher S Tang | 2004 | Management Science2004，50，4： | 1 |
| 16 | Designing supplycontracts: contract type and information asymmetry显示文摘 | Corbett C J Zhou Deming Tang C S | 2004 | Management Science2004，50，4： | 1 |
| 17 | Depth-related influences on biodegradation rates of phe- nanthrene in polluted marine sediments of Puget Sound, WA显示文摘 | TANG Y J CARPENTER S D DEMING J W | 2006 | Marine Pollution Bulletin2006，52，11： | 1 |
| 18 | Designing supply contracts: contract type and information asymmetry显示文摘 | CHARLES J C ZHOU Deming TANG C S | 2004 | Management Science2004，50，4： | 1 |
| 19 | Controlled Release of Nitrate and Sulfate to Enhance Anaerobic Bioremediation of Phenanthrene in Marine Sediments显示文摘 | Tang Y J Carpenter S Deming J | 2005 | Environmental Science and Technology2005，39，9： | 1 |
| 20 | Designing supply contracts: contract type and information asymmetry 显示文摘 | Corbett C J Zhou Deming Tang C S | 2004 | Management Science2004，50，4： | 1 |
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