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“似的”与“似地”的分合
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作者 胡承佼 潘晓军 《安徽农业大学学报(社会科学版)》 2015年第6期84-90,共7页
"似的/似地"是一个助词,"似的"对于"似地"表现出功能上的包孕关系,"似地"是"似的"的有条件变异。"似地"脱胎于状语句位上的"似的",其产生深受"的"&qu... "似的/似地"是一个助词,"似的"对于"似地"表现出功能上的包孕关系,"似地"是"似的"的有条件变异。"似地"脱胎于状语句位上的"似的",其产生深受"的""地"分工影响。非状语句位上使用"X似地"是泛化机制的作用结果。 展开更多
关键词 “似的” “似地” 分合 包孕关系
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Mining maximal pattern-based subspace clusters in high dimensional space
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作者 卢炎生 胡蓉 +1 位作者 邹磊 周翀 《Journal of Southeast University(English Edition)》 EI CAS 2006年第4期490-495,共6页
The problem of pattern-based subspace clustering, a special type of subspace clustering that uses pattern similarity as a measure of similarity, is studied. Unlike most traditional clustering algorithms that group the... The problem of pattern-based subspace clustering, a special type of subspace clustering that uses pattern similarity as a measure of similarity, is studied. Unlike most traditional clustering algorithms that group the close values of objects in all the dimensions or a set of dimensions, clustering by pattern similarity shows an interesting pattern, where objects exhibit a coherent pattern of rise and fall in subspaces. A novel approach, named EMaPle to mine the maximal pattern-based subspace clusters, is designed. The EMaPle searches clusters only in the attribute enumeration spaces which are relatively few compared to the large number of row combinations in the typical datasets, and it exploits novel pruning techniques. EMaPle can find the clusters satisfying coherent constraints, size constraints and sign constraints neglected in MaPle. Both synthetic data sets and real data sets are used to evaluate EMaPle and demonstrate that it is more effective and scalable than MaPle. 展开更多
关键词 subspace clustering pattern similarity maximal pattern-based subspace clusters
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IMPROVED AERODYNAMIC APPROXIMATION MODEL WITH CASE-BASED REASONING TECHNIQUE FOR MDO OF AIRCRAFT
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作者 白振东 刘虎 +1 位作者 柴雪 武哲 《Transactions of Nanjing University of Aeronautics and Astronautics》 EI 2008年第3期187-193,共7页
To increase the efficiency of the multidisciplinary optimization of aircraft, an aerodynamic approximation model is improved. Based on the study of aerodynamic approximation model constructed by the scaling correction... To increase the efficiency of the multidisciplinary optimization of aircraft, an aerodynamic approximation model is improved. Based on the study of aerodynamic approximation model constructed by the scaling correction model, case-based reasoning technique is introduced to improve the approximation model for optimization. The aircraft case model is constructed by utilizing the plane parameters related to aerodynamic characteristics as attributes of cases, and the formula of case retrieving is improved. Finally, the aerodynamic approximation model for optimization is improved by reusing the correction factors of the most similar aircraft to the current one. The multidisciplinary optimization of a civil aircraft concept is carried out with the improved aerodynamic approximation model. The results demonstrate that the precision and the efficiency of the optimization can be improved by utilizing the improved aerodynamic approximation model with ease-based reasoning technique. 展开更多
关键词 AIRCRAFT aerodynamic approximation model case-based reasoning multidisciplinary optimization(MDO)
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Residents'Satisfaction with Public Services in Mountainous Areas:An Empirical Study of Southwestern Sichuan Province,China 被引量:4
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作者 SONG Xueqian DENG Wei +2 位作者 LIU Ying ZHAO Chen WAN Jiangjun 《Chinese Geographical Science》 SCIE CSCD 2017年第2期311-324,共14页
Abstract: Enhancing the efficiency of public services is essential to residents in mountainous areas. It is also important to promote sus- tainable development of these regions. Analysing residents' satisfaction wit... Abstract: Enhancing the efficiency of public services is essential to residents in mountainous areas. It is also important to promote sus- tainable development of these regions. Analysing residents' satisfaction with public services in mountainous areas can help in evaluating outcomes of fiscal investment and identifying potential coping approaches for improving public service efficiencies. The residents' satisfaction with public services and the factors that influence such satisfaction were examined in this study. A study of 12 towns located in the southwestern Sichuan Province was performed using an entropy-weighted analytic hierarchy process (EWAHP), the technique for order preference by similarity to ideal solution (TOPSIS) and Tobit regression methods. The results indicate that: 1) the spatial distribu- tion of satisfaction with public services is non-uniform, and the spatial distribution structure varies for different types of public services. 2) Residents' satisfaction with public services is influenced by both objective and subjective factors. Population density, economic dis- tance, social and cultural divisions and elevation are the major objective factors, whereas bounded rationality, the hierarchy of needs and service expectations are the main subjective factors. The most effective strategies for enhancing residents' satisfaction with public ser- vices are likely to be clustering the population, choosing supply centres with different public services, regulating the cultural division in ethnic minority towns, selecting supply priorities in accordance with residents' needs, implementing targeted intervention policies and establishing 'bottom-up' and 'top-down' integrated decision-making mechanisms. Keywords: mountainous areas; public services; residents' satisfaction; entropy-weighted analytic hierarchy process (EWAHP); technique for order preference by similarity to ideal solution (TOPSIS); Tobit regression; southwestern Sichuan Province 展开更多
关键词 mountainous areas public services residents' satisfaction entropy-weighted analytic hierarchy process (EWAHP) technique for order preference by similarity to ideal solution (TOPSIS) Tobit regression southwestern Sichuan Province
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Vocal structure, behavior and partitioning of all 23 Pternistis spp. into homologous sound(and monophyletic) groups 被引量:2
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作者 Johann H.VAN NIEKERK 《Chinese Birds》 CSCD 2013年第3期210-231,共22页
The aims of this research were (1) to provide a description of spurfowl Pternistis spp. calls and their social context;(2) to describe the divergence of advertisement calls;and (3) to appropri-ate 23 spurfowl species ... The aims of this research were (1) to provide a description of spurfowl Pternistis spp. calls and their social context;(2) to describe the divergence of advertisement calls;and (3) to appropri-ate 23 spurfowl species to homologous sound groups which have been synthesized with recognized monophyletic groups within Pternistis spurfowls. Sound group partitioning was primarily based on male advertisement calls. A total of 218 recordings (rendering^300 identifiable calls) were analyzed covering 22 out of 23 spurfowl species in Africa. One species was assessed from written accounts. The repertoire size per spurfowl varies between 7 and 11 calls. Spurfowl calls were arranged into three broad categories including (1) advertisement calls;(2) maintenance calls including distress calls, juve-nile whining (“mews”), cheeps and comfort calls;and (3) male-female and female-offspring bonding calls. Spurfowl species were set out in eight sound groups of which five were more or less congruent with the monophyletic groups of Hall (1963), but sound groups produced more partitioning as Hall described only five groups relevant to Pternistis spp. The divergence of advertisement calls appar-ently minimizes hybridization between sympatric species but the“genetic distance”between spurfowl species is relatively small causing hybridization among spurfowl species. Despite the vocalizations of Hartlaub’s Spurfowl (P. hartlaubi) differing significantly from the rest of the spurfowls, sound analy-ses suggest that it remains within Pternistis. 展开更多
关键词 homologous sound groups vocal behavior DIVERGENCE phylogeny Pternistis vocal structure
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Rough Integrals Generated by Function Rough Sets 被引量:1
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作者 YU Xiu-qing XU Feng-sheng 《Chinese Quarterly Journal of Mathematics》 CSCD 2011年第2期296-299,共4页
The concepts of the lower approximation integral,the upper approximation integral and rough integrals are given on the basis of function rough sets.Based on these concepts,the relation of the lower approximation integ... The concepts of the lower approximation integral,the upper approximation integral and rough integrals are given on the basis of function rough sets.Based on these concepts,the relation of the lower approximation integrals,the relation of the upper approximation integrals,the relation of rough integrals,and the double median theorem of rough integrals are discussed.Rough integrals have finite contraction characteristic and finite extension characteristic. 展开更多
关键词 function rough sets the lower approximation integral the upper approximation integral rough integrals
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Color Image Quality Assessment Based on Structural Similarity 被引量:2
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作者 卢芳芳 赵群飞 杨根科 《Journal of Donghua University(English Edition)》 EI CAS 2010年第4期443-450,共8页
It is well-known that classical quality measures,such as Mean Squared Error(MSE),Weighted Mean Squared Error(WMSE)or Peak Signal-to-Noise Ratio(PSNR),are not always corresponding with visual observations.Structural si... It is well-known that classical quality measures,such as Mean Squared Error(MSE),Weighted Mean Squared Error(WMSE)or Peak Signal-to-Noise Ratio(PSNR),are not always corresponding with visual observations.Structural similarity based image quality assessment was proposed under the assumption that the Human Visual System(HVS)is highly adapted for extracting structural information from an image.While the demand on high color quality increases in the media industry,color loss will make the visual quality different.In this paper,we proposed an improved quality assessment(QA)method by adding color comparison into the structural similarity(SSIM)measurement system for evaluating color image quality.Then we divided the task of similarity measurement into four comparisons:luminance,contrast,structure,and color.Experimental results show that the predicted quality scores of the proposed method are more effective and consistent with visual quality than the classical methods using five different distortion types of color image sets. 展开更多
关键词 image quality assessment structural similarity difference mean opinion score color image
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Recognition of suspicious behavior using case-based reasoning 被引量:2
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作者 夏利民 杨宝娟 涂宏斌 《Journal of Central South University》 SCIE EI CAS CSCD 2015年第1期241-250,共10页
A novel method case-based reasoning was proposed for suspicious behavior recognition. The method is composed of three departs: human behavior decomposition, human behavior case representation and case-based reasoning.... A novel method case-based reasoning was proposed for suspicious behavior recognition. The method is composed of three departs: human behavior decomposition, human behavior case representation and case-based reasoning. The new approach was proposed to decompose behavior into sub-behaviors that are easier to recognize using a saliency-based visual attention model. New representation of behavior was introduced, in which the sub-behavior and the associated time characteristic of sub-behavior were used to represent behavior case. In the process of case-based reasoning, apart from considering the similarity of basic sub-behaviors,order factor was proposed to measure the similarity of a time order among the sub-behaviors and span factor was used to measure the similarity of duration time of each sub-behavior, which makes the similarity calculations more rational and comprehensive.Experimental results show the effectiveness of the proposed method in comparison with other related works and can run in real-time for the recognition of suspicious behaviors. 展开更多
关键词 visual attention mode case-based reasoning suspicious behavior order factor span factor
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程度构式“X得什么似的”特征及构式义获得
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作者 姚海斌 《大连大学学报》 2022年第1期39-46,共8页
“X得什么似的”可以用作高程度构式。变量构件“X”表现为:性质形容词、心理动词、生理动词及部分带有隐含量级特征的动作动词。构式义可概括为:某主体存在“X”的性质状态,通过“什么似的”虚指比附凸显“X”达到的极致程度。“X得什... “X得什么似的”可以用作高程度构式。变量构件“X”表现为:性质形容词、心理动词、生理动词及部分带有隐含量级特征的动作动词。构式义可概括为:某主体存在“X”的性质状态,通过“什么似的”虚指比附凸显“X”达到的极致程度。“X得什么似的”构式特征突出表现在构式程度表达的主观性特征明显,以及通过“什么似的”的虚指比附实现程度表达。构式义获得得益于构式对构件的压制以及构件语义的认知整合。 展开更多
关键词 “X得什么似的” 程度构式 认知融合
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APPROXIMATE REPRESENTATION OF THE p-NORM DISTRIBUTION
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作者 SUN Haiyan 《Geo-Spatial Information Science》 2001年第3期1-5,共5页
In surveying data processing,we generally suppose that the observational errors distribute normally.In this case the method of least squares can give the minimum variance unbiased estimation of the parameters.The meth... In surveying data processing,we generally suppose that the observational errors distribute normally.In this case the method of least squares can give the minimum variance unbiased estimation of the parameters.The method of least squares does not have the character of robustness,so the use of it will become unsuitable when a few measurements inheriting gross error mix with others.We can use the robust estimating methods that can avoid the influence of gross errors.With this kind of method there is no need to know the exact distribution of the observations.But it will cause other difficulties such as the hypothesis testing for estimated parameters when the sample size is not so big.For non_normally distributed measurements we can suppose they obey the p _norm distribution law.The p _norm distribution is a distributional class,which includes the most frequently used distributions such as the Laplace,Normal and Rectangular ones.This distribution is symmetric and has a kurtosis between 3 and -6/5 when p is larger than 1.Using p _norm distribution to describe the statistical character of the errors,the only assumption is that the error distribution is a symmetric and unimodal curve.This method possesses the property of a kind of self_adapting.But the density function of the p _norm distribution is so complex that it makes the theoretical analysis more difficult.And the troublesome calculation also makes this method not suitable for practice.The research of this paper indicates that the p _norm distribution can be represented by the linear combination of Laplace distribution and normal distribution or by the linear combination of normal distribution and rectangular distribution approximately.Which kind of representation will be taken is according to whether the parameter p is larger than 1 and less than 2 or p is larger than 2.The approximate distribution have the same first four order moments with the exact one.It means that approximate distribution has the same mathematical expectation,variance,skewness and kurtosis with p _norm distribution.Because every density function used in the approximate formulae has a simple form,using the approximate density function to replace the p _norm ones will simplify the problems of p _norm distributed data processing obviously. 展开更多
关键词 p-norm distribution approximate representation of thep-norm distribution SKEWNESS KURTOSIS
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IMPROVEMENT TO THE EVAPORATION DUCT MODEL BY INTRODUCING NONLINEAR SIMILARITY FUNCTIONS IN STABLE CONDITIONS 被引量:1
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作者 丁菊丽 费建芳 +2 位作者 黄小刚 胡晓华 周鑫 《Journal of Tropical Meteorology》 SCIE 2011年第1期64-72,共9页
Modified refractivity (M) profile is an important parameter to describe the atmospheric refraction environment,as well as a key factor in uniquely evaluating electromagnetic propagation effects.In order to improve the... Modified refractivity (M) profile is an important parameter to describe the atmospheric refraction environment,as well as a key factor in uniquely evaluating electromagnetic propagation effects.In order to improve the model-derived M profile in stable (especially very stable) conditions,three nonlinear similarity functions,namely BH91,CB05,SHEBA07,are introduced in this paper to improve the original Babin_V25 model,and the performances of these modified models are verified based on the hydrometeorological observations from tower platforms,which are finally compared with the original Babin_V25 model and Local_HYQ92 model.Results show that introducing nonlinear similarity functions can significantly improve the model-derived M profile;especially,the newly developed SHEBA07 functions manage to reduce the predicted root mean square (rms) differences of M and M slope (for both 0-5m and 5-40m) by 64.5%,16.6%,and 60.4%,respectively in stable conditions.Unfortunately,this improved method reacts little on the evaporation duct height;in contrast,Local_HYQ92 model is capable of reducing the predicted rms differences of M,M slope (for both 0-5m and 5-40m),and evaporation duct height by 76.7%,40.2%,83.7%,and 58.0% respectively.Finally,a new recommendation is made to apply Local_HYQ92 and Babin_SHEBA07 in very stable conditions considering that M slope is more important than evaporation duct height and absolute M value in uniquely determining electromagnetic propagation effects. 展开更多
关键词 evaporation duct similarity theory flux-profile relationship nondimensional similarity functions stable boundary layer electromagnetic wave propagation radar detective ability
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Everolimus halts hepatic cystogenesis in a rodent model of polycystic-liver-disease 被引量:1
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作者 Frederik Temmerman Feng Chen +7 位作者 Louis Libbrecht Ingrid Vander Elst Petra Windmolders Yuanbo Feng Yicheng Ni Humbert De Smedt Frederik Nevens Jos van Pelt 《World Journal of Gastroenterology》 SCIE CAS 2017年第30期5499-5507,共9页
AIM To develop a MRI-based method for accurate determination of liver volume(LV) and to explore the effect of long-term everolimus(EVR) treatment on LV in PCK rats with hepatomegaly. METHODS Thirty-one female PCK rats... AIM To develop a MRI-based method for accurate determination of liver volume(LV) and to explore the effect of long-term everolimus(EVR) treatment on LV in PCK rats with hepatomegaly. METHODS Thirty-one female PCK rats(model for polycystic-liverdisease: PCLD) were randomized into 3 groups and treatment was started at 16 wk, at the moment of extensive hepatomegaly(comparable to what is done in the human disease). Animals received: controls(n = 14), lanreotide(LAN: 3 mg/kg per 2 wk)(n = 10) or everolimus(EVR: 1 mg/kg per day)(n = 7). LV was measured at week 16, 24, 28. At week 28, all rats were sacrificed and liver tissue was harvested. Fibrosis was evaluated using quantitative image analysis. In addition, gene(quantitative RT-PCR) and protein expression(by Western blot) of the PI3K/Ak T/m TOR signaling pathway was investigated. RESULTS LV determination by MRI correlated excellent with the ex vivo measurements(r = 0.99, P < 0.001). The relative changes in LV at the end of treatment were:(controls) +31.8%;(LAN) +5.1% and(EVR) +8.8%, indicating a significantly halt of LV progression compared with controls(respectively, P = 0.01 and P = 0.04). Furthermore, EVR significantly reduced the amount of liver fibrosis(P = 0.004) thus might also prevent the development of portal hypertension. There was no difference in phosphorylation of Akt(Threonine 308) between LAN-treated PCK rats control PCK rats, whereas S6 was significantly more phosphorylated in the LAN group. Phosphorylation of Akt was not different between controls and EVR treated rats, however, for S6 there was significantly less phosphorylation in the EVR treated rats. Thus, both drugs interact with the PI3K/Ak T/m TOR signaling cascade but acting at different molecular levels.CONCLUSION Everolimus halts cyst growth comparable to lanreotide and reduces the development of fibrosis. m TORinhibition should be further explored in PCLD patients especially those that need immunosuppression. 展开更多
关键词 Fibrocystic liver disease mTOR inhibitor somatostatin analogue liver volume measurement Magnetic resonance imaging
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RESEARCH ON SOME THEORETICAL PROBLEMS OF MAP DATA HANDLING USING FRACTAL APPROACH
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作者 WANG Qiao 《Geo-Spatial Information Science》 2000年第1期34-38,共5页
Some theoretical problems of fractal geographical map data handling are dis- cussed and some new methods about fractal dimension introducing, developing, comparing and estimating are proposed in this paper.
关键词 fractals fractal dimension SELF-SIMILARITY scale interval
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冀鲁官话无棣方言中的“也似的”——兼论汉语比拟助词的来源 被引量:4
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作者 张金圈 《语言研究》 CSSCI 北大核心 2013年第3期68-72,共5页
在山东无棣方言中,"也似的[˙s 21 ti˙]"可以兼做比拟助词、情态助词和假设助词,其中比拟助词是基本的用法,情态助词和假设助词都由比拟助词语法化而来。"也似的"做情态助词和假设助词的用法在其他方言中比较少见... 在山东无棣方言中,"也似的[˙s 21 ti˙]"可以兼做比拟助词、情态助词和假设助词,其中比拟助词是基本的用法,情态助词和假设助词都由比拟助词语法化而来。"也似的"做情态助词和假设助词的用法在其他方言中比较少见,具有一定的类型学价值。当前学界对比拟助词的来源存在争议,无棣方言中"也似的"的某些用法可以为"外部渗透说"提供证据支持。 展开更多
关键词 无棣方言 也似的 比拟 假设
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On well posedness of best simultaneous approximation problems in Banach spaces 被引量:2
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作者 李冲 《Science China Mathematics》 SCIE 2001年第12期1558-1570,共13页
The well posedness of best simultaneous approximation problems is considered. We establish the generic results on the well posedness of the best simultaneous approximation problems for any closed weakly compact nonemp... The well posedness of best simultaneous approximation problems is considered. We establish the generic results on the well posedness of the best simultaneous approximation problems for any closed weakly compact nonempty subset in a strictly convex Kadec Banach space. Further, we prove that the set of all points inE(G) such that the best simultaneous approximation problems are not well posed is a u- porous set inE(G) whenX is a uniformly convex Banach space. In addition, we also investigate the generic property of the ambiguous loci of the best simultaneous approximation. 展开更多
关键词 well posedness best simultaneous approximation a-porous set ambiguous lad
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Linear low-rank approximation and nonlinear dimensionality reduction 被引量:2
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作者 ZHANG Zhenyue & ZHA Hongyuan Department of Mathematics, Zhejiang University, Yuquan Campus, Hangzhou 310027, China Department of Computer Science and Engineering, The Pennsylvania State University, University Park, PA 16802, U.S.A. 《Science China Mathematics》 SCIE 2004年第6期908-920,共13页
We present our recent work on both linear and nonlinear data reduction methods and algorithms: for the linear case we discuss results on structure analysis of SVD of columnpartitioned matrices and sparse low-rank appr... We present our recent work on both linear and nonlinear data reduction methods and algorithms: for the linear case we discuss results on structure analysis of SVD of columnpartitioned matrices and sparse low-rank approximation; for the nonlinear case we investigate methods for nonlinear dimensionality reduction and manifold learning. The problems we address have attracted great deal of interest in data mining and machine learning. 展开更多
关键词 singular value decomposition low-rank approximation sparse matrix nonlinear dimensionality reduction principal manifold subspace alignment data mining
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Construction of a mutant of Actinoplanes sp. N902-109 that produces a new rapamycin analog 被引量:1
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作者 HUANG He GAO Ping +1 位作者 ZHAO Qi HU Hai-Feng 《Chinese Journal of Natural Medicines》 SCIE CAS CSCD 2018年第3期210-218,共9页
In the present study, we introduced point mutations into Ac_rap A which encodes a polyketide synthase responsible for rapamycin biosynthesis in Actinoplanes sp. N902-109, in order to construct a mutant with an inactiv... In the present study, we introduced point mutations into Ac_rap A which encodes a polyketide synthase responsible for rapamycin biosynthesis in Actinoplanes sp. N902-109, in order to construct a mutant with an inactivated enoylreductase(ER) domain, which was able to synthesize a new rapamycin analog. Based on the homologous recombination induced by double-strand breaks in chromosome mediated by endonuclease I-SceI, the site-directed mutation in the first ER domain of Ac_rapA was introduced using non-replicating plasmid pL YERIA combined with an I-SceI expression plasmid. Three amino acid residues of the active center, Ala-Gly-Gly, were converted to Ala-Ser-Pro. The broth of the mutant strain SIPI-027 was analyzed by HPLC and a new peak with the similar UV spectrum to that of rapamycin was found. The sample of the new peak was prepared by solvent extraction, column chromatography, and crystallization methods. The structure of new compound, named as SIPI-rapxin, was elucidated by determining and analyzing its MS and NMR spectra and its biological activity was assessed using mixed lymphocyte reaction(MLR). An ER domain–deficient mutant of Actinoplanes sp. N902-109, named as SIPI-027, was constructed, which produced a novel rapamycin analog SIPI-rapxin and its structure was elucidated to be 35, 36-didehydro-27-O-demethylrapamycin. The biological activity of SIPI-rapxin was better than that of rapamycin. In conclusion, inactivation of the first ER domain of rap A, one of the modular polyketide synthase responsible for macro-lactone synthesis of rapamycin, gave rise to a mutant capable of producing a novel rapamycin analog, 35, 36-didehydro-27-O-demethylrapamycin, demonstrating that the enoylreductase domain was responsible for the reduction of the double bond between C-35 and C-36 during rapamycin synthesis. 展开更多
关键词 Actinoplanes sp. N902-109 RAPAMYCIN Structural analog Polyketide synthase Enoylreductase
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The Changing Mode of Legal Regulation of Labor Relations in China 被引量:1
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作者 Xie Zengyi 《Social Sciences in China》 2018年第4期96-113,共18页
At present, Chinese labor relations operate under a unitary model of legal regulation in which labor law is applied to workers "as a whole, with everyone treated equally." This causes a number of problems. In realit... At present, Chinese labor relations operate under a unitary model of legal regulation in which labor law is applied to workers "as a whole, with everyone treated equally." This causes a number of problems. In reality, due to constantly changing modes of employment and the flexibility of workers' "affiliation," forms of employment are highly diverse. In addition to regular employees, there are also "quasi-employees" (employee-like persons) whose affiliation is quite weak, and other special employees. This necessitates the updating of the legislative thinking behind labor laws, While holding fast to the assumption that workers are a vulnerable group, we should review the differences between different types of employee and draw up the corresponding regulations on the basis of specific situations. Where legislative technique is concerned, we should do away with the traditional one-size- fits-all legislative model in favor of a dedicated model that targets particular types of subject and particular circumstances. We should abandon the traditional old-fashioned model in which "all labor law provisions apply" or "no labor law provisions apply" and categorize employees in such a way as to provide special rules for quasi-employees, special employees and employees of special employers. The legal regulation of labor relations should be based on categorization and differential treatment. 展开更多
关键词 labor relations workers legal regulation quasi-employees (employee-like persons) special employees
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The Equivalent Representation of the Breadth-One D-Invariant Polynomial Subspace and Its Discretization 被引量:1
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作者 JIANG Xue ZHANG Shugong 《Journal of Systems Science & Complexity》 SCIE EI CSCD 2016年第5期1436-1445,共10页
This paper demonstrates the equivalence of two classes of D-invariant polynomial subspaces, i.e., these two classes of subspaces are different representations of the breadth-one D-invariant subspace. Moreover, the aut... This paper demonstrates the equivalence of two classes of D-invariant polynomial subspaces, i.e., these two classes of subspaces are different representations of the breadth-one D-invariant subspace. Moreover, the authors solve the discrete approximation problem in ideal interpolation for the breadth-one D-invariant subspace. Namely, the authors find the points, such that the limiting space of the evaluation functionals at these points is the functional space induced by the given D-invariant subspace, as the evaluation points all coalesce at one point. 展开更多
关键词 Breadth-one D-invariant polynomial subspace discrete approximation problem idealinterpolation.
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ILES for mechanism of ramp-type MVG reducing shock induced flow separation
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作者 Yong Yang YongHua Yan ChaoQun Liu 《Science China(Physics,Mechanics & Astronomy)》 SCIE EI CAS CSCD 2016年第12期60-71,共12页
A high order implicit large eddy simulation (ILES) is carried out to study the mechanism of shock induced flow separation reduction under ramp-type MVG control. The mechanism was originally considered as that MVG can ... A high order implicit large eddy simulation (ILES) is carried out to study the mechanism of shock induced flow separation reduction under ramp-type MVG control. The mechanism was originally considered as that MVG can generate streamwise vortices which strongly mix boundary layer and the boundary layer becomes more capable to resist strong adverse pressure gradient caused by shock and to keep the boundary layer attached. However, according to our ILES, a chain of ring-like vortices is generated behind the ramp-type MVG and goes further to interact with the shock. When the ring-like vortices pass through the shock, the shock wave is weakened and altered while the vortex structures are quite stable. The instantaneous simulation shows that the spanwise ring-like vortex, not the streamwise vortex, plays a key role to weaken the shock and reduce the shock-induced separation. Detailed investigation on ring-like vortices and shock interaction will be given in this paper. 展开更多
关键词 large eddy simulation MVG ring-like vortex shock
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