“有点儿 + 褒义形容词”是一种新兴表达式,且不再受限于表示贬义。但“有点儿”在程度副词量级系统中仍然是表示低量级的,脱离语境下和表示高度肯定、赞扬的形容词搭配不那么自然。这种格式在成为“新潮”之前历时上也有这样的用法,分...“有点儿 + 褒义形容词”是一种新兴表达式,且不再受限于表示贬义。但“有点儿”在程度副词量级系统中仍然是表示低量级的,脱离语境下和表示高度肯定、赞扬的形容词搭配不那么自然。这种格式在成为“新潮”之前历时上也有这样的用法,分析CCL语料我们发现是不自由且受限的。在前人研究的基础上,我们对比并更新了近五年间褒义形容词的分类表;同时发现“有点儿”高频率与表示高量级和强调的副词共现,经常出现在感叹句或有感叹语气的句子中,自此,“有点儿”在和它们的搭配中已经完全失去了自己的低量级意义,成为一个固定的搭配。“A bit + commendatory adjective” is an emerging expression that is no longer confined to conveying derogatory meanings. However, within the scale system of degree adverbs, “a bit” still represents a low degree. Out of context, its pairing with adjectives that express high degrees of affirmation or praise does not feel entirely natural. Before this expression became “trendy”, similar usages could also be found historically, but based on an analysis of the CCL corpus, they were constrained and not freely used. Building on previous research, we compared and updated the classification list of commendatory adjectives for the past five years. Simultaneously, we found that “a bit” frequently co-occurs with adverbs that indicate a high degree or emphasis, often appearing in exclamatory sentences or sentences with an exclamatory tone. Consequently, in these combinations, “a bit” has completely lost its meaning of indicating a low degree and has become a fixed part of the expression.展开更多
The analysis result of absolute degree of grey incidence for multivariate time series is often inconsistent with the qualitative analysis. To overcome this shortage, a multivariate absolute degree of grey incidence ba...The analysis result of absolute degree of grey incidence for multivariate time series is often inconsistent with the qualitative analysis. To overcome this shortage, a multivariate absolute degree of grey incidence based on distribution characteristics of points is proposed. Based on the geometric description of multivariate time se- ries, the neighborhood extrema are extracted in the different regions, and a characteristic point set is constructed. Then according to the distribution of the characteristic point set, a characteristic point sequence reflecting the ge- ometric features of multivariate time series is obtained. The incidence analysis between multivariate time series is transformed into the relational analysis between characteristic point sequences, and a grey incidence model is established. The model possesses the properties of translational invariance, transpose and rank transform invari- ance, and satisfies the grey incidence analysis axioms. Finally, two cases are studied and the results prove the ef- fectiveness of the model.展开更多
The delay-dependent absolute stability for a class of Lurie systems with interval time-varying delay is studied. By employing an augmented Lyapunov functional and combining a free-weighting matrix approach and the rec...The delay-dependent absolute stability for a class of Lurie systems with interval time-varying delay is studied. By employing an augmented Lyapunov functional and combining a free-weighting matrix approach and the reciprocal convex technique, an improved stability condition is derived in terms of linear matrix inequalities （LMIs）. By retaining some useful terms that are usually ignored in the derivative of the Lyapunov function, the proposed sufficient condition depends not only on the lower and upper bounds of both the delay and its derivative, but it also depends on their differences, which has wider application fields than those of present results. Moreover, a new type of equality expression is developed to handle the sector bounds of the nonlinear function, which achieves fewer LMIs in the derived condition, compared with those based on the convex representation. Therefore, the proposed method is less conservative than the existing ones. Simulation examples are given to demonstrate the validity of the approach.展开更多
文摘“有点儿 + 褒义形容词”是一种新兴表达式,且不再受限于表示贬义。但“有点儿”在程度副词量级系统中仍然是表示低量级的,脱离语境下和表示高度肯定、赞扬的形容词搭配不那么自然。这种格式在成为“新潮”之前历时上也有这样的用法,分析CCL语料我们发现是不自由且受限的。在前人研究的基础上,我们对比并更新了近五年间褒义形容词的分类表;同时发现“有点儿”高频率与表示高量级和强调的副词共现,经常出现在感叹句或有感叹语气的句子中,自此,“有点儿”在和它们的搭配中已经完全失去了自己的低量级意义,成为一个固定的搭配。“A bit + commendatory adjective” is an emerging expression that is no longer confined to conveying derogatory meanings. However, within the scale system of degree adverbs, “a bit” still represents a low degree. Out of context, its pairing with adjectives that express high degrees of affirmation or praise does not feel entirely natural. Before this expression became “trendy”, similar usages could also be found historically, but based on an analysis of the CCL corpus, they were constrained and not freely used. Building on previous research, we compared and updated the classification list of commendatory adjectives for the past five years. Simultaneously, we found that “a bit” frequently co-occurs with adverbs that indicate a high degree or emphasis, often appearing in exclamatory sentences or sentences with an exclamatory tone. Consequently, in these combinations, “a bit” has completely lost its meaning of indicating a low degree and has become a fixed part of the expression.
基金Supported by the National Natural Science Foundation of China(71101043,70901041,71171113)the Joint Research Project of National Natural Science Foundation of China and Royal Society of UK(71111130211)+4 种基金the Major Program of National Funds of Social Science of China(10ZD&014,11&ZD168)the Doctoral Fundof Ministry of Education of China(20093218120032,200802870020)the Qinglan Project for Excellent Youth Teacherin Jiangsu Province(China)Research Funding in Nanjing University of Aeronautics and Astronautics(NR2011002)the Central University Scientific Research Expenses of HoHai University(2011B09914,2010B11114)~~
文摘The analysis result of absolute degree of grey incidence for multivariate time series is often inconsistent with the qualitative analysis. To overcome this shortage, a multivariate absolute degree of grey incidence based on distribution characteristics of points is proposed. Based on the geometric description of multivariate time se- ries, the neighborhood extrema are extracted in the different regions, and a characteristic point set is constructed. Then according to the distribution of the characteristic point set, a characteristic point sequence reflecting the ge- ometric features of multivariate time series is obtained. The incidence analysis between multivariate time series is transformed into the relational analysis between characteristic point sequences, and a grey incidence model is established. The model possesses the properties of translational invariance, transpose and rank transform invari- ance, and satisfies the grey incidence analysis axioms. Finally, two cases are studied and the results prove the ef- fectiveness of the model.
基金The National Natural Science Foundation of China(No.60835001,60875035,60905009,61004032,61004064,11071001)China Postdoctoral Science Foundation(No.201003546)+2 种基金the Ph.D.Programs Foundation of Ministry of Education of China(No.20093401110001)the Major Program of Higher Education of Anhui Province(No.KJ2010ZD02)the Natural Science Research Project of Higher Education of Anhui Province(No.KJ2011A020)
文摘The delay-dependent absolute stability for a class of Lurie systems with interval time-varying delay is studied. By employing an augmented Lyapunov functional and combining a free-weighting matrix approach and the reciprocal convex technique, an improved stability condition is derived in terms of linear matrix inequalities （LMIs）. By retaining some useful terms that are usually ignored in the derivative of the Lyapunov function, the proposed sufficient condition depends not only on the lower and upper bounds of both the delay and its derivative, but it also depends on their differences, which has wider application fields than those of present results. Moreover, a new type of equality expression is developed to handle the sector bounds of the nonlinear function, which achieves fewer LMIs in the derived condition, compared with those based on the convex representation. Therefore, the proposed method is less conservative than the existing ones. Simulation examples are given to demonstrate the validity of the approach.
