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| 1 | Stability of Boundary Feedback Control Based on Weighted Lyapunov Function in Networks of Open Channels显示文摘Lyapunov 功能在串联为二条开的隧道的盒子基于熵的加权的和被构造,它被 Saint-Venant 方程描述。边界反馈控制器的一个班被介绍借助于 Lyapunov 设计途径在平衡点的一位邻居保证本地靠近环的 asymptotic 稳定性。 | CEN Li-Hui XI Yu-Geng | 2009 | 自动化学报2009，35，1： | 4 |
| 2 | Investigation ofβ—‑decay half‑life and delayed neutron emission with uncertainty analysis显示文摘β-decay half-life and β-delayed neutron emission(βn) are of great importance in the development of basic science and industrial applications, such as nuclear physics and nuclear energy, where β--decay plays an important role. Many theoretical models have been proposed to describe β-decay half-lives, whereas the systematic study of βn is still rare. This study aimed to investigate β--decay half-lives and βn probabilities through analytical formulas and by comparing them with experimental data. Analytical formulas for β--decay properties have been proposed by considering prominent factors, that is, decay energy,odevity, and the shell effect. The bootstrap method was used to simultaneously evaluate the total uncertainty on calculations,which was composed of statistic and systematic uncertainties. β--decay half-lives, βn probabilities, and the corresponding uncertainties were evaluated for the neutron-rich region. The experimental half-lives were well reproduced. Additional predictions are also presented with theoretical uncertainties, which helps to better understand the disparity between the experimental and theoretical results. | Yu‑Feng Gao Bo‑Shuai Cai Cen‑Xi Yuan | 2023 | Nuclear Science and Techniques2023，34，1： | 2 |
| 3 | Synthesis and characterization of a sensitive and selective Fe^(3+) fluorescent sensor based on novel sulfonated calix[4]arene-based host-guest complex显示文摘A novel fluorescent sensor was prepared from sulfonated calix[4]arene(SC4A)by the host-guest com-plexation method using the fluorescent dye rhodamine B(RB)as a structure-directing agent.The crystal structure of the host-guest complex(RB@(SC4A)_(3))was confirmed by X-ray diffraction studies while its performance and sensing mechanism for metal ion pollutants were characterized using fluorescence and nuclear magnetic resonance spectroscopies.The results showed that RB@(SC4A)_(3) had a triangular branch structure resulting from host-guest mediation of the interactions between the three SC4A host molecules and the three terminal groups of the guest molecule RB.The host-guest complex exhibited sensitive and selective sensing towards Fe^(3+)ions via a fluorescence quenching mechanism.The results indicated that RB@(SC4A)_(3) could be a promising sensitive and selective fluorescent sensor for metal ion pollutants mon-itoring.It also provided new insights into the synthesis of calixarene-based host-guest complex. | Ran Cen Ming Liu Jihong Lu Weifang Zhang Jingjing Dai Xi Zeng Zhu Tao Xin Xiao | 2022 | Chinese Chemical Letters2022，33，5： | 2 |
| 4 | Dynamic analysis of nucleosome position and occupancy by sequencing显示文摘 | Cen K F Xi Y X Pan X W | 2013 | Ge- home Res2013，23，2： | 1 |
| 5 | Heterogeneous ultrathin films of poly(vinyl aleohol)/layered double hy- droxide and montmorillonite nanosheets via layer-by-layer assembly显示文摘 | Huang Shu Cen Xi Peng Hongdan | 2009 | J Phys Chem B2009，113，15： | 1 |
| 6 | Sewage flow optimization algorithm for large-scale urban sewer networks based on network community division显示文摘By considering the flow control of urban sewer networks to minimize the electricity consumption of pumping stations, a decomposition-coordination strategy for energy savings based on network community division is developed in this paper. A mathematical model characterizing the steady-state flow of urban sewer networks is first constructed, consisting of a set of algebraic equations with the structure transportation capacities captured as constraints. Since the sewer networks have no apparent natural hierarchical structure in general, it is very difficult to identify the clustered groups. A fast network division approach through calculating the betweenness of each edge is successfully applied to identify the groups and a sewer network with arbitrary configuration could be then decomposed into subnetworks. By integrating the coupling constraints of the subnetworks, the original problem is separated into N optimization subproblems in accordance with the network decomposition. Each subproblem is solved locally and the solutions to the subproblems are coordinated to form an appropriate global solution. Finally, an application to a specified large-scale sewer network is also investigated to demonstrate the validity of the proposed algorithm. | Lihui CEN Yugeng XI | 2008 | 控制理论与应用(英文版)2008，6，4： | 1 |
| 7 | Support Vector Machines modeling for prediction显示文摘 | Zhong Ping Xi Bin Cen Yong | 2008 | International Journal of Systems and Control2008，1，： | 1 |
| 8 | Influence of thermal radiations in infrared optical systems 显示文摘 | XI Xiao LI Xiao-tong CEN Zhao-feng | 2005 | SPIE2005，5638，： | 1 |
| 9 | Scientific objectives of the Hot Universe Baryon Surveyor(HUBS) mission显示文摘The Hot Universe Baryon Surveyor(HUBS) is a proposed space-based X-ray telescope for detecting X-ray emissions from the hot gas content in our universe. With its unprecedented spatially-resolved high-resolution spectroscopy and large field of view,the HUBS mission will be uniquely qualified to measure the physical and chemical properties of the hot gas in the interstellar medium, the circumgalactic medium, the intergalactic medium, and the intracluster medium. These measurements will be valuable for two key scientific goals of HUBS, namely to unravel the AGN and stellar feedback physics that governs the formation and evolution of galaxies, and to probe the baryon budget and multi-phase states from galactic to cosmological scales. In addition to these two goals, the HUBS mission will also help us solve some problems in the fields of galaxy clusters, AGNs, difuse X-ray backgrounds, supernova remnants, and compact objects. This paper discusses the perspective of advancing these fields using the HUBS telescope. | Joel Bregman Renyue Cen Yang Chen Wei Cui Taotao Fang Fulai Guo Edmund Hodges-Kluck Rui Huang Luis C.Ho Li Ji Suoqing Ji Xi Kang Xiaoyu Lai Hui Li Jiangtao Li Miao Li Xiangdong Li Yuan Li Zhaosheng Li Guiyun Liang Helei Liu Wenhao Liu Fangjun Lu Junjie Mao Gabriele Ponti Zhijie Qu Chenxi Shan Lijing Shao Fangzheng Shi Xinwen Shu Lei Sun Mouyuan Sun Hao Tong Junfeng Wang Junxian Wang Q.Daniel Wang Song Wang Tinggui Wang Weiyang Wang Zhongxiang Wang Dandan Xu Haiguang Xu Heng Xu Renxin Xu Xiaojie Xu Yongquan Xue Hang Yang Feng Yuan Shuinai Zhang Yuning Zhang Zhongli Zhang Yuanyuan Zhao Enping Zhou Ping Zhou | 2023 | Science China(Physics,Mechanics & Astronomy)2023，66，9： | 1 |
| 10 | Congruences on ideal nil-extension of completely regular semigroups显示文摘Let S be an ideal nil-extension of a completely regular semigroup K by a nil semigroup Q with zero. A concept of admissible congruence pairs (δ,ω) of S is introduced, where δ and ω are a congruence on Q and a congruence on K respectively. It is proved that every congruence on S can be uniquely respresented by an admissible congruence pair (δ,ω) of S. Suppose that ρ K denotes the Rees congruence induced by the ideal K of S. Then it is shown that for any congruence σ on S,a mapping Γ:σ|→(σ Q,σ K) is an order-preserving bijection from the set of all congruences on S onto the set of all admissible congruence pairs of S,where σ K is the restriction of σ to K and σ Q=(σ∨ρ K)/ρ K. Moreover,the lattice of congruences of S is also discussed. As a special case,every congruence on completely Archimedean semigroups S is described by an admissible quarterple of S. The following question is asked: Is the lattice of congruences of the completely Archimedean semigroup a semimodular lattice? | REN Xueming 1, 2 GUO Yuqi 2 and CEN Jiaping (Shum Kar-ping) 31. Department of Mathematics, Xi’an University of Architecture & Technology, Xi’an 710055, China 2. Department of Mathematics, Yunnan University, Kunming 650091, China 3. Department of | 1998 | Chinese Science Bulletin1998，43，5： | 1 |
| 11 | Lyapunov-based boundary feedback control in multi-reach canals显示文摘This paper presents a Lyapunov-based approach to design the boundary feedback control for an open-channel network composed of a cascade of multi-reach canals,each described by a pair of Saint-Venant equations. The weighted sum of entropies of the multi-reaches is adopted to construct the Lyapunov function. The time derivative of the Lyapunov function is expressed by the water depth variations at the gate boundaries,based on which a class of boundary feedback controllers is presented to guarantee the local asymptotic closed-loop stability. The advantage of this approach is that only the water level depths at the gate boundaries are measured as the feedback. | CEN LiHui XI YuGeng | 2009 | Science in China(Series F)2009，52，7： | 1 |
| 12 | Electrochemical properties of LiNi_(0.5)Mn_(1.3)Ti_(0.2)O_4/Li_4Ti_5O_(12)cells显示文摘Spinel compounds LiNi 0.5 Mn 1.3 Ti 0.2 O 4(LNMTO) and Li 4 Ti 5 O 12(LTO) were synthesized by different methods.The particle sizes of LNMTO and LTO are 0.5-2 and 0.5-0.8 μm,respectively.The LNMTO/LTO cell exhibits better electrochemical properties at both a low current rate of 0.2C and a high current rate of 1C.When the specific capacity was determined based on the mass of the LNMTO cathode,the LNMTO/LTO cell delivered 137 mA·h·g-1 at 0.2C and 118.2 mA·h·g-1 at-1C,and the corresponding capacity retentions after 30 cycles are 88.5% and 92.4%,respectively. | Guo-qiang Liu Xi Wang Ya-jie Gao Lei Wen Guang-yin Liu Jian-jie Zheng Peng Cen Ying Li | 2012 | International Journal of Minerals,Metallurgy and Materials2012，19，5： | 0 |
| 13 | Energy Absorption Characteristics of a Novel Asymmetric and Rotatable Re-entrant Honeycomb Structure显示文摘Based on the symmetric re-entrant honeycomb(S-RH)structure with negative Poisson’s ratios,a novel asymmetric and rotatable re-entrant honeycomb(AR-RH)structure was proposed.Both the S-RH structure and AR-RH structure were produced by the 3D printing technology.Through experimental test and finite element simulation,the deformation mechanism and energy absorption characteristics of the AR-RH structure and the S-RH structure with negative Poisson’s ratios at different impact velocities were compared.The experimental test and finite element simulation results show that the novel AR-RH structure with negative Poisson’s ratios has stronger energy absorption capacity than the S-RH structure,and it has been verified that the rotatability of AR-RH can indeed absorb energy.Furthermore,the degree of asymmetry of the AR-RH structure was discussed. | Huifeng Xi Jiachu Xu Shende Cen Shiqing Huang | 2021 | Acta Mechanica Solida Sinica2021，34，4： | 0 |
| 14 | Random forest-based prediction of decay modes and half-lives of superheavy nuclei显示文摘Information on the decay process of nuclides in the superheavy region is critical in investigating new elements beyond oganesson and the island of stability.This paper presents the application of a random forest algorithm to examine the competition among different decay modes in the superheavy region,includingα decay,β^(-)decay,β^(+)decay,electron capture and spontaneous fission.The observed half-lives and dominant decay mode are well reproduced.The dominant decay mode of 96.9%of the nuclei beyond ^(212) Po is correctly obtained.Further,α decay is predicted to be the dominant decay mode for isotopes in new elements Z=119-122,except for spontaneous fission in certain even–even elements owing to the increased Coulomb repulsion and odd–even effect.The predicted half-lives demonstrate the existence of a long-lived spontaneous fission island southwest of ^(298) Fl caused by the competition between the fission barrier and Coulomb repulsion.A better understanding of spontaneous fission,particularly beyond ^(286)Fl,is crucial in the search for new elements and the island of stability. | Bo‑Shuai Cai Cen‑Xi Yuan | 2023 | Nuclear Science and Techniques2023，34，12： | 0 |
| 15 | Research on Various Factors Affecting the Dedifferentiation of Different Floral Organs of Jinxiu Wild Chive显示文摘[Objective]This study aimed to investigate various factors affecting the dedifferentiation of different floral organs of Jinxiu wild chive.[Method]Floral organs of Jinxiu wild chive were cultured in vitro,to analyze the effects of basic medium,exogenous hormone type and combination,and blossoming status of buds on callus induction.[Result]MS medium was the most suitable medium for callus induction from buds.NAA was conducive to improving callus formation rate compared with other auxins.Non-blossomed buds exhibited the highest rate of callus induction.Under the same culture conditions,the rate of callus induction varied extremely significantly among various floral organs;to be specific,the rate of callus induction from floral disc reached the highest,followed successively by bud and pedicel,but no callus was formed in floral axis group.[Conclusion]This study laid the foundation for further establishment of tissue culture and rapid propagation system of Jinxiu wild chive and other wild chives and provided technical support for the preservation,development and utilization of wild chive germplasm resources. | Xi WANG Lifeng LONG Pengxiao WEI Xiufen CEN Zhenglin WAN Minghua LONG | 2015 | Agricultural Biotechnology2015，4，2： | 0 |
| 16 | Comparison and development of advanced machine learning tools to predict nonalcoholic fatty liver disease:An extended study显示文摘Background:Nonalcoholic fatty liver disease(NAFLD)is a public health challenge and significant cause of morbidity and mortality worldwide.Early identification is crucial for disease intervention.We recently proposed a nomogram-based NAFLD prediction model from a large population cohort.We aimed to explore machine learning tools in predicting NAFLD.Methods:A retrospective cross-sectional study was performed on 15315 Chinese subjects(10373 training and 4942 testing sets).Selected clinical and biochemical factors were evaluated by different types of machine learning algorithms to develop and validate seven predictive models.Nine evaluation indicators including area under the receiver operating characteristic curve(AUROC),area under the precision-recall curve(AUPRC),accuracy,positive predictive value,sensitivity,F1 score,Matthews correlation coefficient(MCC),specificity and negative prognostic value were applied to compare the performance among the models.The selected clinical and biochemical factors were ranked according to the importance in prediction ability.Results:Totally 4018/10373(38.74%)and 1860/4942(37.64%)subjects had ultrasound-proven NAFLD in the training and testing sets,respectively.Seven machine learning based models were developed and demonstrated good performance in predicting NAFLD.Among these models,the XGBoost model revealed the highest AUROC(0.873),AUPRC(0.810),accuracy(0.795),positive predictive value(0.806),F1 score(0.695),MCC(0.557),specificity(0.909),demonstrating the best prediction ability among the built models.Body mass index was the most valuable indicator to predict NAFLD according to the feature ranking scores.Conclusions:The XGBoost model has the best overall prediction ability for diagnosing NAFLD.The novel machine learning tools provide considerable beneficial potential in NAFLD screening. | Yuan-Xing Liu Xi Liu Chao Cen Xin Li Ji-Min Liu Zhao-Yan Ming Song-Feng Yu Xiao-Feng Tang Lin Zhou Jun Yu Ke-Jie Huang Shu-Sen Zheng | 2021 | Hepatobiliary & Pancreatic Diseases International2021，20，5： | 0 |
| 17 | Highly interconnected macroporous MBG/PLGA scaffolds with enhanced mechanical and biological properties via green foaming strategy显示文摘In this study,mesoporous bioactive glass particles(MBGs) are incorporated into poly(lactic-co-glycolic acid)(PLGA) to fabricate highly interconnected macroporous composite scaffolds with enhanced mechanical and biological properties via a developed supercritical carbon dioxide(scCO_(2)) foaming method Scaffolds show favorable highly interconnected and macroporous structure through a high foaming pressure and long venting time foaming strategy.Specifically,scaffolds with porosity from 73% to 85%,pore size from 120 μm to 320 μm and interconnectivity of over 95% are controllably fabricated at MBG content from 0 wt% to 20 wt%.In comparison with neat PLGA scaffolds,composite scaffolds perform improved strength(up to 1.5 folds) and Young's modulus(up to 3 folds).The interconnected macroporous structure is beneficial to the ingrowth of cells.More importantly,composite scaffolds also provide a more promising microenvironment for cellular proliferation and adhesion with the release of bioactive ions.Hopefully,MBG/PLGA scaffolds developed by the green foaming strategy in this work show promising morphological,mechanical and biological features for tissue regeneration. | Chaobo Song Jiapeng Zhang Shuang Li Shengbin Yang Eryi Lu Zhenhao Xi Lian Cen Ling Zhao Weikang Yuan | 2021 | Chinese Journal of Chemical Engineering2021，34，1： | 0 |
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