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2003-2020 全部
为您找到包含“Program for Changjiang Scholars and Innovative Research Team in University”的内容共7

SHI Jie,YANG Desen,SHI Shengguo

Minimum variance distortionless response (MVDR) focused beamformer based on vector sensor array is widely used in the area of the noise source high-resolution localization and identification. However, when an arbitrary unknown signal steering vector mismatch occurs or the training sample size is small, the performance of MVDR focused beamformer will be severely degraded. In this paper, we develop a new approach, which is based on the worst-case concept, to improve the robustness of the original method. It is shown that the proposed algorithm improves its robustness by imposing the array response constraint on the uncertainty set of the steering vector, and can be reformulated in a convex form as the so called second order cone program (SOCP), and then solved efficiently using the well established optimization tool, Sedumi. Theory analysis and computer simulations show better performance of our robust beamformer as compared with the existing methods: it can achieve a greater dynamic range,sharper focused peak,and lower back-ground noise level.The results in this paper demonstrate our proposed method can be applied in the underwater noise source high-resolution localization and identification.

2014-04-11

This work was supported by program for changjiang scholars and innovative research team in university (No. IRT1228)

Science and Technology on Underwater Acoustic Laboratory,Harbin Engineering University,Harbin 150001,China,Science and Technology on Underwater Acoustic Laboratory,Harbin Engineering University,Harbin 150001,China,Science and Technology on Underwater Acoustic Laboratory,Harbin Engineering University,Harbin 150001,China

#Physics#

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LI Yun,WANG Chao,ZHAI Hongbin

We have developed an environmentally benign and practical protocol for the synthesis of pyrrolo[1,2-a]quinoxalines, which represent ubiquitous structural units common to a number of biologically active compounds. This synthetic system features simple operation and using clean oxidant, as well as mild reaction conditions. Both aromatic and aliphatic aldehydes can be used for the reaction and the products were obtained in good to excellent yields.

2016-07-20

NSFC (2127210

SRFDP (20130211120020

The Fundamental Research Funds for the Central Universities(lzujbky-2016-ct02

Program for Changjiang Scholars and Innovative Research Team in University (PCSIRT: IRT_15R28

State Key Laboratory of Applied Organic Chemistry, Lanzhou University,State Key Laboratory of Applied Organic Chemistry, Lanzhou University,State Key Laboratory of Applied Organic Chemistry, Lanzhou University

#Chemistry#

0评论(1 分享(0)

SONG Tianyi,HAN Linhai,YU Hongxia

Experiments were performed on steel reinforced concrete (SRC) column to SRC beam joints subjected to fire scenarios including heating and cooling phases, and temperatures in the junction and areas certain distance away from the junction were measured during both the heating and cooling phases. The experiments tested the influence of heating time on the temperature distributions at various sections of the specimens. A three-dimensional finite element analysis (FEA) model was developed to calculate the temperature field of the SRC column to SRC beam joints. The predicted temperatures show good comparison with the test results. Based on the finite element analysis, the differences of the temperature distributions in the joint zone and the non-joint zone are analyzed and its influence to the structural fire safety design is illustrated. One important conclusion from this study is the necessity to include cooling phase in structural safety design because it is in the cooling phase of fire that the majority of joint materials reached their peak temperature.

2011-03-14

Specialized Research Fund for the Doctoral Program of Higher Education (No. 20090002110043

Program for Changjiang Scholars and Innovative Research Team in University (No. IRT00736

Department of Civil Engineering, Tsinghua University,Department of Civil Engineering, Tsinghua University, Beijing, 100084, China,Department of Civil Engineering, Tsinghua University, Beijing, 100084, China

#Civil and Architectural Engineering#

0评论(0 分享(0)

LI Chao,Feng Shan,HE Xin

A pharmacokinetic study of isoimperatorin (IO), one of the major bioactive ingredients in the herb, Angelicae dahuricae, was performed in rats (n = 10) using a newly developed ultra-performance liquid chromatography-tandem mass spectrometry method. Tandem mass spectrometry was performed and the protonated parent→daughter ion pairs at m/z 271.02→202.9 for IO and m/z 216.9→173.7 for the internal standard, bergapten, were monitored. The analysis was validated with respect to linearity, recovery, specificity, accuracy, and precision. The pharmacokinetic parameters were obtained by non-compartmental analysis. After administration, IO was extensively distributed and rapidly eliminated from the plasma. The parameters also indicate a lower IO plasma concentration and poor absorption. Factors that led to this result were the instability of IO in acidic and basic conditions, poor solubility, and low dissolution rate. The stability of IO was observed at different pH levels using high-performance liquid chromatography, and the solubility at physiological conditions was determined using a novel drug dissolution/absorption simulating system.

2011-06-10

National Administration of Chinese Traditional Medicine of China(No.200807051

Doctoral foundation of Ministry of China(No.200800630005

Chinese Ministry of Sciences and Technology Research Grant (No.2009ZX09304-002

Supported by Program for Changjiang Scholars and Innovative Research Team in University (PCSIRT

Faculty of Chinese Materia Medica, Tianjin University of Traditional Chinese Medicine,Faculty of Chinese Materia Medica, Tianjin University of Traditional Chinese Medicine, Tianjin, 300193, China,Faculty of Chinese Materia Medica, Tianjin University of Traditional Chinese Medicine, Tianjin, 300193, China

#Pharmacy#

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Zheng Yu,Han Qi,Zhang Keping,Wang Min

Acetobacter pasteurianus is usually used for vinegar fermentations, however, the growth of A. pasteurianus was commonly inhibited by high ethanol concentration. In this research, the ethanol resistance of A. pasteurianus CGMCC 3089 was improved by a continuous ethanol stress adaptation culture. The characterization of A. pasteurianus CGMCC 3089 during the evolutionary process of adaptation to ethanol was performed with respect to the improved resistance to ethanol. It was found that the ethanol resistance of A. pasteurianus was related to the activities of alcohol dehydrogenase (ADH) and aldehyde dehydrogenases (ALDH). Furthermore, the improved resistance against ethanol was an inheritable phenotype, instead of a transient physiologic adaptation. The results of Random Amplified Polymorphic DNA (RAPD) suggested that there was some diversity between the genomes of the original strain and the evolutionary strain.

2012-11-01

National High Technology Research and Development Program of China (2012AA021303

Program for Changjiang Scholars and Innovative Research Team in University( 2012AA022108

Doctoral Program Foundation of Institutions of Higher Education of China(IRT1166

Foundation of Tianjin University of Science and Technology(20101208120003

National Natural Science Foundation of China(20110114

Key Laboratory of Industrial Fermentation Microbiology (Tianjin University of Science and Technology), Ministry of Education, Tianjin Key Lab of Industrial Microbiology, College of Biotechnology, Tianjin University of Science and Technology, Tianjin 300457,Key Laboratory of Industrial Fermentation Microbiology (Tianjin University of Science and Technology), Ministry of Education, Tianjin Key Lab of Industrial Microbiology, College of Biotechnology, Tianjin University of Science and Technology, Tianjin, 300457,Key Laboratory of Industrial Fermentation Microbiology (Tianjin University of Science and Technology), Ministry of Education, Tianjin Key Lab of Industrial Microbiology, College of Biotechnology, Tianjin University of Science and Technology, Tianjin, 300457,Key Laboratory of Industrial Fermentation Microbiology (Tianjin University of Science and Technology), Ministry of Education, Tianjin Key Lab of Industrial Microbiology, College of Biotechnology, Tianjin University of Science and Technology, Tianjin,

#Biology#

0评论(0 分享(0)

Bai Zhenyu,Zhang Jianxiong

This paper considers the problem of simultaneously determining the price and inventory control strategies for deteriorating items. It is assumed that the rate of deterioration can be reduced by means of effective capital preservation technology investment and the demand rate is a function of selling price. The objective of this study is to simultaneously determine the optimal selling price, the optimal length of replenishment cycle and the optimal preservation technology investment such that the total profit per unit time is maximized. First, for any given preservation technology investment, we prove that the optimal selling price and the optimal length of replenishment cycle exist and are unique. Next, we show that the total profit is a concave function of the preservation technology investment. Then, an effective algorithm is designed to find the optimal solution of the proposed model. Finally, numerical examples to illustrate the solution procedure and some managerial implications are provided.

2013-01-30

the Program for Changjiang Scholars and Innovative Research Team in University of China(IRT1028

the Research Fund for the Doctor Program of Higher Education of China (No. 20090032120034

This work was supported by the National Nature Science Foundation of China(No. 61004015

the Program for New Century Excellent Talents in Universities of China (NECT-11-0377

Institute of Systems Engineering, Tianjin University, TianJin 300072,Institute of Systems Engineering, Tianjin University, Tianjin 300072

#Information Science and System Science#

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Wu Guiling,Mei Fusheng,Li Dongfeng

Treatment of Fe(ClO4)2o6H2O or Fe(ClO4)3o9H2O with a benzimidazolyl-rich ligand, N,N,N',N'-tetrakis[(1-methyl-2-benzimidazolyl)methyl]-1,2-ethanediamine (medtb) in alcohol/MeCN give a mononuclear ferrous complex, [FeII(medtb)](ClO4)2oCH3CNoCH3OH (1), and four non-heme alkoxide-iron(III) complexes, [FeIII(OMe)(medtb)](ClO4)2oH2O (2, alcohol = MeOH), [FeIII(OEt)(Hmedtb)](ClO4)3oCH3CN (3, alcohol = EtOH), [FeIII(OPrn)(Hmedtb)](ClO4)3o- nPrOHo2CH3CN (4, alcohol = n-PrOH), and [FeIII(OBun)(Hmedtb)](ClO4)3o3CH3CNoH2O (5, alcohol = n-BuOH), respectively. The alkoxideiron(III) complexes all show 1) a Fe(III)?-OR center (R = Me, 2; Et, 3; nPr, 4; nBu, 5) with the FeO bond distances in the range of 1.781-?1.816 , and 2) yellow color and an intense electronic transition around 370 nm. The alkoxide-iron(III) complexes can be reduced by organic compounds with cis,cis-1,4-diene moiety via the hydrogen atom abstraction reaction (HAAR).

2011-04-26

Youth Chen-Guang Project of Wuhan(No. 200850731361

partially by the Program for Changjiang Scholars and Innovative Research Team in University(PCSIRT

Specialized Research Fund for the Doctoral Program of Higher Education( No. IRT0953

This research was supported by Program for New Century Excellent Talents in University (No. 200805111004

College of Chemistry, Central China Normal University,College of Chemistry, Central China Normal University, Wuhan 430079,College of Chemistry, Central China Normal University, Wuhan 430079

#Chemistry#

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