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On Corepresentations of Multiplier Hopf Algebras

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Acta Mathematica Sinica,English Series 2010年第6期26卷 1087-1114页

作者： Shuan-hong WANG hai-xing zhu Department of Mathematics Southeast University Nanjing 210096 P. R. China

We present a general construction producing a unitary corepresentation of a multiplier Hopf algebra in itself and study RR-corepresentations of twisted tensor coproduct multiplier Hopf algebra. Then we investigate some properties of functors, integrals and morphisms related to the categories of the crossed modules and covariant modules over multiplier Hopf algebras. By doing so, we can apply our theory to the case of group-cograded multiplier Hopf algebras, in particular, the case of Hopf group-coalgebras.

关键词： (group-cograded) multiplier Hopf algebra copresentation crossed module covariant module Hopf group-coalgebra twisted tensor coproduct

Large-eddy simulation of the generation and propagation of internal solitary waves

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Science China(Physics,Mechanics & Astronomy) 2014年第6期57卷 1128-1136页

作者： zhu hai WANG LingLing TANG HongWu State Key Laboratory of Hydrology-Water Resources and Hydraulic Engineering Hohai University

A modified large-eddy simulation model,the dynamic coherent eddy model(DCEM)is employed to simulate the generation and propagation of internal solitary waves(ISWs)of both depression and elevation type,with wave amplitudes ranging from small,medium to large *** simulation results agree well with the existing experimental *** generation process of ISWs is successfully captured by the DCEM *** instabilities and diapycnal mixing in the initial wave generation phase are *** dissipation rate is not equal at different locations of an ***-induced velocity field is analyzed in the present *** structure of the bottom boundary layer(BBL)of internal wave packets is found to be different from that of a single ISW.A reverse boundary jet instead of a separation bubble exists behind the leading internal wave while separation bubbles appear in other parts of the wave-induced velocity *** boundary jet flow resulting from the adverse pressure gradients has distinctive dynamics compared with free shear jets.

关键词： ISW DCEM internal wave generation bottom boundary layer LES boundary jets

Serum inter-cellular adhesion molecule 1 is an early marker of diagnosis and prediction of severe acute pancreatitis

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World Journal of Gastroenterology 2012年第20期18卷 2554-2560页

作者： hai-Hang zhu Lin-Lin Jiang Department of Gastroenterology Northern Jiangsu HospitalCollege of Clinical Medical MedicineYangzhou UniversityYangzhou 225001Jiangsu ProvinceChina

AIM:To determine if serum inter-cellular adhesion molecule 1(ICAM-1)is an early marker of the diagnosis and prediction of severe acute pancreatitis(SAP) within 24 h of onset of pain,and to compare the sensitivity,specificity and prognostic value of this test with those of acute physiology and chronic health evaluation(APACHE)Ⅱscore and interleukin-6(IL-6). METHODS:Patients with acute pancreatitis(AP)were divided into two groups according to the Ranson's criteria:mild acute pancreatitis(MAP)group and SAP *** ICAM-1,APACHEⅡand IL-6 levels were detected in all the *** sensitivity,specificity and prognostic value of the ICAM-1,APACHEⅡscore and IL-6 were evaluated. RESULTS:The ICAM-1 level in 36 patients with SAP within 24 h of onset of pain was increased and was significantly higher than that in the 50 patients with MAP and the 15 healthy volunteers(P<0.01).The ICAM-1 level(25 ng/mL)was chosen as the optimum cutoff to distinguish SAP from MAP,and the sensitivity,specificity,positive predictive value,negative predictive value(NPV),positive likelihood ratio and negative likelihood ratio were 61.11%,71.42%,0.6111,0.7142, 2.1382 and 0.5445,*** area under the curve demonstrated that the prognostic accuracy of ICAM-1(0.712)was similar to the APACHE-Ⅱscoring system(0.770)and superior to IL-6(0.508)in distinguishing SAP from MAP. CONCLUSION:ICAM-1 test is a simple,rapid and reliable method in clinical *** is an early marker of diagnosis and prediction of SAP within the first 24 h after onset of pain or on *** it has a relatively low NPV and does not allow it to be a stand-alone test for the diagnosis of AP,other conventional diagnostic tests are required.

关键词： Intercellular adhesion molecule-1 Severe acute pancreatitis Early prediction

Sampling adaptive block compressed sensing reconstruction algorithm for images based on edge detection

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The Journal of China Universities of Posts and Telecommunications 2013年第3期20卷 97-103页

作者： ZHENG hai-bo zhu Xiu-chang School of Telecommunication and Information Engineering Nanjing University of Posts and Telecommunications

In this paper, a sampling adaptive for block compressed sensing with smooth projected Landweber based on edge detection （SA-BCS-SPL-ED） image reconstruction algorithm is presented. This algorithm takes full advantage of the characteristics of the block compressed sensing, which assigns a sampling rate depending on its texture complexity of each block. The block complexity is measured by the variance of its texture gradient, big variance with high sampling rates and small variance with low sampling rates. Meanwhile, in order to avoid over-sampling and sub-sampling, we set up the maximum sampling rate and the minimum sampling rate for each block. Through iterative algorithm, the actual sampling rate of the whole image approximately equals to the set up value. In aspects of the directional transforms, discrete cosine transform （DCT）, dual-tree discrete wavelet transform （DDWT）, discrete wavelet transform （DWT） and Contourlet （CT） are used in experiments. Experimental results show that compared to block compressed sensing with smooth projected Landweber （BCS-SPL）, the proposed algorithm is much better with simple texture images and even complicated texture images at the same sampling rate. Besides, SA-BCS-SPL-ED-DDWT is quite good for the most of images while the SA-BCS-SPL-ED-CT is likely better only for more-complicated texture images.

关键词： block compressed sensing edge detection sampling-adaptive variance directional transforms

One-dimensional horizontal infiltration experiment for determining permeability coefficient of loamy sand

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Journal of Arid Land 2017年第1期9卷 27-37页

作者： HU Shunjun zhu hai CHEN Yongbao State Key Laboratory of Desert and Oasis Ecology Xinjiang Institute of Ecology and Geography Chinese Academy of Sciences Urumqi 830011 China University of Chinese Academy of Sciences Beijing 100049 China Central South Institute of Metallurgical Geology Yichang 443003 China

A knowledge of soil permeability is essential to evaluate hydrologic characteristics of soil, such as water storage and water movement, and soil permeability coefficient is an important parameter that reflects soil permeability. In order to confirm the acceptability of the one-dimensional horizontal infiltration method（one-D method） for simultaneously determining both the saturated and unsaturated permeability coefficients of loamy sand, we first measured the cumulative infiltration and the wetting front distance under various infiltration heads through a series of one-dimensional horizontal infiltration experiments, and then analyzed the relationships of the cumulative horizontal infiltration with the wetting front distance and the square root of infiltration time. We finally compared the permeability results from Gardner model based on the one-D method with the results from other two commonly-used methods（i.e., constant head method and van Genuchten model） to evaluate the acceptability and applicability of the one-D method. The results showed that there was a robust linear relationship between the cumulative horizontal infiltration and the wetting front distance, suggesting that it is more appropriate to take the soil moisture content after infiltration in the entire wetted zone as the average soil moisture content than as the saturated soil moisture content. The results also showed that there was a robust linear relationship between the cumulative horizontal infiltration and the square root of infiltration time, suggesting that the Philip infiltration formula can better reflect the characteristics of cumulative horizontal infiltration under different infiltration heads. The following two facts indicate that it is feasible to use the one-D method for simultaneously determining the saturated and unsaturated permeability coefficients of loamy sand. First, the saturated permeability coefficient（prescribed in the Gardner model） of loamy sand obtained from the one-D me

关键词： permeability coefficient one-dimensional horizontal infiltration cumulative horizontal infiltration wetting front distance Philip infiltration formula Gardner model

I-FABP、CRP联合肠系膜上动脉超声检测对新生儿坏死性小肠结肠炎的诊断价值

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罕少疾病杂志 2025年第1期32卷 121-123页

作者：闫海娜王云花安阳市妇幼保健院新生儿科河南安阳455000 鹤壁市人民医院儿科河南鹤壁458030

目的探讨肠型脂肪酸结合蛋白(I-FABP)、C反应蛋白(CRP)联合肠系膜上动脉(SMA)超声检测对新生儿坏死性小肠结肠炎(NEC)的诊断价值。方法选择2020年5月至2022年5月80例疑似NEC(Bell分期I期)患儿,以及同期72例确诊NEC(Bell分期II期)和40... 详细信息

目的探讨肠型脂肪酸结合蛋白(I-FABP)、C反应蛋白(CRP)联合肠系膜上动脉(SMA)超声检测对新生儿坏死性小肠结肠炎(NEC)的诊断价值。方法选择2020年5月至2022年5月80例疑似NEC(Bell分期I期)患儿,以及同期72例确诊NEC(Bell分期II期)和40例无胃肠疾病的新生儿(对照组),行彩色多普勒超声检测SMA收缩期峰值流速(PSV)、舒张末期流速(EDV)及阻力指数(RI),同时检测血清I-FABP、CRP水平。结果三组首检SMA超声PSV、EDV、RI比较差异显著(P0.05);与确诊组比较,疑似组RI明显减小(P0.05)。三组血清I-FABP、CRP水平具有统计学意义(P0.05)。ROC曲线分析显示,SMA超声+I-FABP+CRP联合诊断早期NEC的敏感性、特异性分别为87.1%、85.9%,AUC为0.834(95%CI:0.712~0.926),均高于单一诊断。结论 I-FABP、CRP及SMA超声检查对NEC具有诊断价值,三者联合对NEC具有较高的敏感性和特异性。

关键词：新生儿坏死性小肠结肠炎肠型脂肪酸结合蛋白 C反应蛋白肠系膜上动脉彩色多普勒超声

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Applying the model driven generative domain engineering method to develop self-organizing architectural solutions for mobile robot

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Journal of Zhejiang University-Science A(Applied Physics & Engineering) 2006年第10期7卷 1652-1661页

作者： LIANG hai-hua zhu Miao-liang School of Computer Science and Technology Zhejiang University Hangzhou 31002 7 China

Model driven generative domain engineering (MDGDE) is a domain engineering method aiming to develop optimized, reusable architectures, components and aspects for application engineering. Agents are regarded in MDGDE as special objects having more autonomy, and taking more initiative. Design of the agent involves three levels of activities: logical analysis and design, physical analysis, physical design. This classification corresponds to domain analysis and design, application analysis, and application design. Agent is an important analysis and design tool for MDGDE because it facilitates development of complex distributed system—the mobile robot. According to MDGDE, we designed a distributed communication middleware and a set of event-driven agents, which enables the robot to initiate actions adaptively to the dynamical changes in the environment. This paper describes our approach as well as its motivations and our practice.

关键词： Domain engineering Agent oriented software engineering Mobile robot

Durability of Concrete with Different Improvement Measures and Its Ser-vice Life Prediction in Island and Reef Environment

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China Ocean Engineering 2022年第6期36卷 947-958页

作者： GONG Wei YU Hong-fa MA hai-yan WANG Nan zhu hai-wei School of Civil Engineering and Architecture Jiangsu University of Science and TechnologyZhenjiang 212100China Department of Civil and Airport Engineering Nanjing University of Aeronautics and AstronauticsNanjing 210016China School of Civil Engineering University of Science and Technology LiaoningAnshan 114051China Key Laboratory of Harbor and Marine Structure Durability Technology of the Ministry of Communications CCCC Forth Harbor Engineering Institute Co.Ltd.Guangzhou 510230China

To solve the durability of island and reef concrete engineering in the harsh environment of high temperature,high salt,high humidity and windy,the strength grade of concrete and the type of corrosion inhibitor were used as the influence factors,while the relative dynamic elastic modulus was used as the evaluation *** addition,the law and time variability of the deterioration of concrete,the size effect,environmental similarity and the service life model were *** results showed that improving the strength grade of concrete could improve the durability of concrete,and corrosion inhibitor could slightly improve the durability of ***-varying law of the deterioration of concrete conformed to the univariate quadratic *** with the concrete damage equivalent theory,a size effect model based on the relative dynamic elastic modulus was proposed and verified,and the size effect coefficient was also *** environmental similarity model between simulated and practical island and reef environment was *** with the reliability theory and the first order second moment method,a new service life model of concrete structure was *** authors were convinced that the research will be advantageous to researchers.

关键词： island and reef environment relative dynamic elastic modulus size effect environmental similarity service life model

Even and Odd Phase Coherent States Associated with the Pegg-Barnett Hermitian Phase Theory

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Chinese Physics Letters 1996年第4期13卷 273-276页

作者： zhu Jiu-yun KUANG Le-man Department of Physics Hu'nan Normal UniversityChangsha 410081

Even and odd phase coherent states associated with the Pegg-Barnett Hermitian phase theory are *** and odd coherent-state formalism of the Pegg-Barnett phase operator is given in terms of the projection operator in th... 详细信息

关键词： space. states. coherent