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| 1 | How much information is needed in quantized nonlinear control?显示文摘Quantization rate is a crucial measure of complexity in determining stabilizability of control systems subject to quantized state measurements. This paper investigates quantization complexity for a class of nonlinear systems which are subjected to disturbances of unknown statistics and unknown bounds. This class of systems includes linear stablizable systems as special cases. Two lower bounds on the quantization rates are derived which guarantee input-to-state stabilizability for continuous-time and sampled-data feedback strategies, respectively. Simulation examples are provided to validate the results. | Chuang ZHENG Lin LI Leyi WANG Chanying LI | 2018 | Science China(Information Sciences)2018，61，9： | 6 |
| 2 | Structural basis for the recognition of Asef by adenomatous polyposis coli显示文摘Adenomatous polyposis coli (APC ) 通过激活刺激 APC 的 guanine 核苷酸交换因素调整房间房间粘附和房间移植(GEF;Asef ) ,它通常是通过在它的 Src 相同之间的绑定的 autoinhibited 3 (SH3 ) 并且 Dbl 相同(DH ) 领域。激活 APC 的 Asef 刺激小 GTPase Cdc42,它导致减少的房间房间坚持和提高的房间移植。在 colorectal 癌症,组成地截断了 APC 激活 Asef 并且支持癌症房间移植和 angiogenesis。这里,我们报导人的 APC/Asef 建筑群的水晶结构。我们发现 APC 的犰狳重复域使用一条高度保存的表面沟认出 Asef 的 APC 有约束力的区域(ABR ) ,哪个在绑定之上戏剧性地改变到 APC 的符合构造。为复杂形成的 APC 和 Asef 上的关键残余被变异,他们的重要性被绑定和活动试金表明。有 autoinhibited Asef 的 APC/Asef 建筑群的结构的重迭建议在 APC 和 Asef 之间的绑定可能创造在 Asef-DH 领域和 APC 之间的位的碰撞,它可能在刺激它的 GEF 活动的 Asef 导致一个 conformational 变化。我们的结构因此阐明由 APC 的 Asef 识别的分子的机制,以及对癌症为药品的干预提供一个潜在的目标。 | Zhenyi Zhang Leyi Chen Lei Gao Kui Lin Liang Zhu Yang Lu Xiaoshan Shi Yuan Gao Jing Zhou Ping Xu Jian Zhang Geng Wu | 2012 | Cell Research2012，22，2： | 5 |
| 3 | Modification of Cellulose by Hydrophobic Long-chain Molecules: Advances and Prospects显示文摘Cellulose,a natural polymer material with abundant natural sources,is non-toxic,renewable,and biodegradable,making it one of the most promising green materials.Its inherent hydrophilicity dramatically limits the development and application of cellulose products.Hydrophobic modification can significantly change cellulose properties and endow it with additional functions depending on the types of modifying molecules.Controlled modification of cellulose by long-chain hydrophobic molecules is challenging.Significant advances took advantage of new reaction systems and copolymerization.This paper reviews recent innovations in long-chain cellulose hydrophobic modification.A brief value-adding assessment provides a reference for green changes of cellulose to make it fit for future applications. | Yuyuan Wang Haishan Zhang Leyi Lin Rui Wu Xiaohui Wang Junli Ren Chuanfu Liu Xiaoying Wang | 2020 | Paper And Biomaterials2020，5，3： | 3 |
| 4 | Network Robustness Depth and Topology Management of Networked Dynamic Systems显示文摘Networked control systems are subject to adversary conditions that affect their network topologies.To ensure reliable system operations,network topologies need to be characterized and managed for their impact on the overall system performance.This paper introduces the concept of network robustness depth for this pursuit.Discrete event systems are used as a foundation to model dynamic behavior of network topologies,support their analysis,and carry out their management.Stochastic analysis relates the link reliability probabilities to a probabilistic characterization of network robustness depth.Several topology management strategies are discussed,including passive methods,random strategies,and optimization methodologies.Their respective benefits and limitations are quantified.By using platoon control as a platform of hybrid(continuous and discrete event) systems and packet erasure channels as a communication protocol,the results are demonstrated with case studies. | WANG Leyi LIN Feng YIN George | 2016 | Journal of Systems Science & Complexity2016，29，1： | 1 |
| 5 | Some Remarks on BLUP under the General Linear Model with Linear Equality Restrictions显示文摘In this paper, we give the representation of the best linear unbiased predictor(BLUP)of the new observations under M_r_f. Through the representation, we give necessary and sufficient conditions that the estimators, OLSEs(ordinary least squares estimators) and BLUEs(best linear unbiased estimators), under M_f and M_r_f, and the predictor, BLUP, under M_f continue to be the BLUP under M_r_f, respectively. | Xingwei REN Leyi LIN | 2018 | Journal of Mathematical Research with Applications2018，38，5： | 0 |
| 6 | Retrieval of Winter Wheat Canopy Carotenoid Content with Ground-and Airborne-Based Hyperspectral Data显示文摘Accurate assessment of canopy carotenoid content(CC_(x+c)C)in crops is central to monitor physiological conditions in plants and vegetation stress,and consequently supporting agronomic decisions.However,due to the overlap of absorption peaks of carotenoid(C_(x+c))and chlorophyll(C_(a+b)),accurate estimation of carotenoid using reflectance where carotenoid absorb is challenging.The objective of present study was to assess CC_(x+c)C in winter wheat(Triticum aestivum L.)with ground-and aircraft-based hyperspectral measurements in the visible and near-infrared spectrum.In-situ hyperspectral reflectance were measured and airborne hyperspectral data were acquired during major growth stages of winter wheat in five consecutive field experiments.At the canopy level,a remarkable linear relationship(R^(2)=0.95,p<0.001)existed between C_(x+c) and Ca+b,and correlation between CC_(x+c)C and wavelengths within 400 to 1000 nm range indicated that CC_(x+c)C could be estimated using reflectance ranging from visible to near-infrared wavebands.Results of Cx+c assessment based on chlorophyll and carotenoid indices showed that red edge chlorophyll index(CI red edge)performed with the highest accuracy(R^(2)=0.77,RMSE=22.27μg/cm^(2),MAE=4.97μg/cm^(2)).Applying partial least square regression(PLSR)in CC_(x+c)C retrieval emphasized the significance of reflectance within 700 to 750 nm range in CC_(x+c)C assessment.Based on CI red edge index,use of airborne hyperspectral imagery achieved satisfactory results in mapping the spatial distribution of CC_(x+c)C.This study demonstrates that it is feasible to accurately assess CC_(x+c)C in winter wheat with red edge chlorophyll index provided that C_(x+c) correlated well with C_(a+b) at the canopy scale.it is therefore a promising method for CC_(x+c)C retrieval at regional scale from aerial hyperspectral imagery. | Ting Cui Xianfeng Zhou Yufeng Huang Yanting Guo Yunrui Lin Leyi Song Jingcheng Zhang | 2023 | Phyton-International Journal of Experimental Botany2023，92，9： | 0 |
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