钢琴曲《艾斯特山庄的喷泉》与《水的嬉戏》结构之比较

李斯特的《艾斯特山庄的喷泉》与拉威尔的《水的嬉戏》是两首以水为题材的作品。从音乐本体出发对这两部作品的结构进行细致的对比分析,有助于我们更好地理解和演奏李斯特、拉威尔的钢琴作品,提高对钢琴音响色彩及钢琴的表现力方面的鉴赏水平,有助于我们更全面地掌握李斯特和拉威尔创作的总体风格。     

A note on the queue with a random set-up time under a restricted admissibility policy with a Bernoulli vacation schedule

This paper deals with the queue size distribution of an M^x/G/1 queue with a random set-up time and with a Bernoulli vacation schedule under a restricted admissibility policy. This generalizes the model studied by Madan and Choudhury [Sankhyá 66 (2004) 175–193].     

A zero-one law for large order statistics

Fix r ≥ 1, and let {M_nr} be the rth largest of {X₁,X₂,…X_n}, where X₁,X₂,… is a sequence of i.i.d. random variables with distribution function F. It is proved that P[M_nr ≤ u_n i.o.] = 0 or 1 according as the series Σ^∞_n=3Fⁿ(u_n)(log log n)^r/n converges or diverges, for any real sequence {u_n} such that n{1 -F(u_n)} is nondecreasing and divergent. This generalizes a result of Bamdorff-Nielsen (1961) in the case r = 1.     

“以情悟道 守理衷情”的文化意义(下)——四论《红楼梦》的创作主旨

《红楼梦》作者以贾宝玉这一艺术形象实践着警幻仙姑的嘱咐:"以情悟道,守理衷情"。以此警醒世人,从而起到补天的作用。《红楼梦》坚持"以情悟道",以情传道,是有志于道而又不得其位即"有命无运"的明清知识分子用小说批评朝政,教化民众而创作出的最为艳丽的文学奇葩。中华民族在漫长的古代社会中,走过了自己独特的发展道路,创造了自己迥异于西方的伦理文化,形成了自己独特的"尚礼"精神追求。道与非道、义与非义、礼与非礼,构成中国古代文化矛盾冲突的主线。建立一个和谐有序的王道社会,不仅是中国古代儒家的主张,也是道家无为而治的理想模式。对这一理想的追求,是几千年中国知识阶层乃至广大民众一致的梦想。为了这个梦想,孔夫子在面对周王朝礼崩乐坏的社会现实时,提出了"克己复礼"的主张;同样,《红楼梦》作者面对满清的黑暗与腐败,提出了"以情悟道,守理衷情"作为社会改革的出路。这就是中华文化尚礼精神在中国文学中的具体体现。这就是中国文化与西方文化的不同之处。     

粉煤灰对高强混凝土性能的影响

在泵送混凝土中掺入适量的粉煤灰,特别是与减水剂复合使用时,不仅经济效益显著,而且能改善混凝土的性能.研究了粉煤灰高强混凝土中粉煤灰的细度、掺量对混凝土流动性、可泵性及强度的影响,最后给出了煤灰在高强混凝土中的最优掺量,可为工程应用借鉴.     

Weapons of Mass Distraction: Magicianship,Misdirection, and the Dark Side of Legitimation1

Most discussions of legitimation focus on factors that are expected to contribute to it, such as tradition, expertise, or prosperity. Less attention has been paid to “the dark side” of legitimation, which depends heavily on evading attention. A potentially informative approach is to learn from professionals with special expertise in evading attention while making things “disappear”—magicians. Rather than seeking overt control over the audience, they perform in plain view, largely by using well‐timed distractions, or “misdirection.” Preliminary evidence suggests that similar techniques may be widely used in political contexts, with some of the most effective forms of misdirection involving diversionary reframing—diverting attention away from any questions about existing distributions of privilege, not by brute force, but by changing the subject, especially by raising questions about the legitimacy of critics. These and related techniques clearly deserve to be the focus of additional research.     

论服装在音乐舞台中的表现形式与相互作用

舞台服装在音乐表现中具有功能性与审美性的双重特征。服装与音乐的融合互进，促成跨界设计理论与实践的创新。舞台服装通过身份表现和场景表现强化音乐意象，并提升音乐的审美体验；而音乐风格也深度影响着舞台服装，两者既交互又一致，从音乐角度创作服装或从服装角度设计音乐，在理论与实践中皆有可能。     

An implicit function based procedure for analyzing maximum likelihood estimates from nonidentically distributed data

A methodology is presented for gaining insight into properties — such as outlier influence, bias, and width of confidence intervals — of maximum likelihood estimates from nonidentically distributed Gaussian data. The methodology is based on an application of the implicit function theorem to derive an approximation to the maximum likelihood estimator. This approximation, unlike the maximum likelihood estimator, is expressed in closed form and thus it can be used in lieu of costly Monte Carlo simulation to study the properties of the maximum likelihood estimator.     

A Combined D.C. Optimization—Ellipsoidal Branch-and-Bound Algorithm for Solving Nonconvex Quadratic Programming Problems

In this paper we propose a new branch-and-bound algorithm by using an ellipsoidal partition for minimizing an indefinite quadratic function over a bounded polyhedral convex set which is not necessarily given explicitly by a system of linear inequalities and/or equalities. It is required that for this set there exists an efficient algorithm to verify whether a point is feasible, and to find a violated constraint if this point is not feasible. The algorithm is based upon the fact that the problem of minimizing an indefinite quadratic form over an ellipsoid can be efficiently solved by some available (polynomial and nonpolynomial time) algorithms. In particular, the d.c. (difference of convex functions) algorithm (DCA) with restarting procedure recently introduced by Pham Dinh Tao and L.T. Hoai An is applied to globally solving this problem. DCA is also used for locally solving the nonconvex quadratic program. It is restarted with current best feasible points in the branch-and-bound scheme, and improved them in its turn. The combined DCA-ellipsoidal branch-and-bound algorithm then enhances the convergence: it reduces considerably the upper bound and thereby a lot of ellipsoids can be eliminated from further consideration. Several numerical experiments are given.     

On unbiased estimation of gini index and yntema-pietra index of lognormal distribution and their variances

Here we derive the uniformly minimum variance unbiased (best) estimator and a strongly consistent, asymptotically normal, unbiased estimator of each of Gini index and Yntema-Pietra index of lognormal distribution . These estimators are in terms of generalized hypergeometric functions ₁F₂. Further, the variances of these estimators and the best estimators of variances of best estimators are found out. They are in terms of Kempé de Fériet's hypergeometric functions.