《水浒传》复音词的统计

我们抽样统计了《水浒传》24回近20万字的语料,对书中的单音词词类及各类复音词进行定量统计,并分别对之进行了描述,借以反映元末明初汉语构词法的分布情况。     

具单一休假的M/M/1排队模型的指数稳定性

研究具单一休假的M/M/1排队模型,使用泛函分析方法,特别是Banach空间上线性算子理论,证明了相应的动力算子的严格占优本征值的存在性,以及系统解的线性稳定性和指数稳定性.     

一种非周期软实时系统的缓冲设计方法

研究了任务的到达时间和执行时间均不确定的非周期软实时系统,采用排队论的分析方法,非周期软实时系统被看成是典型的随机离散事件动态系统,并被模型化为一个M/M/1/H混合制排队系统,讨论了抛弃率、截止时间错过率和平均截止时间超过量等三种性能指标,并在此基础上进行了缓冲容量的最优设计。性能分析表明缓冲设计方法能有效地改善系统的性能。     

论教唆、帮助他人实施侵权行为的民事责任承担

教唆、帮助他人实施侵权行为理论上属于广义上的共同侵权行为,但在民事责任的承担上具有特殊性.从规范模式看,教唆、帮助他人实施侵权行为在我国经历了由司法解释到民事立法的演变过程,但现行立法规定仍有完善必要.教唆人与帮助人在侵权行为中的主观恶性及其对后果的影响等方面明显不同,因而在民事责任承担上应有所区别.教唆、帮助非完全民事行为能力人实施侵权行为的,应根据被教唆、帮助的对象不同确立相应的民事责任承担规则.即教唆无民事行为能力人实施侵权行为的,由教唆人承担全部责任;教唆限制民事行为能力人实施侵权行为的,由教唆人承担主要责任.     

“单性异体”与“两性合体”：从女娲神话到伏羲女娲神话考论

女娲与伏羲是我国上古神话内容体系中的重要人物,且二者经常相伴出现,粘合度甚高。女娲伏羲神话的形成演变具有一定的历史特点及内在规律,即女娲神话最初以“单性异体”的形貌出现,成为中华民族的创世始祖神;后与社会发展形态适应,出现伏羲女娲相结合的“两性合体”神话,女娲成为伏羲的配偶神;随着男性权力的日益巩固,伏羲成为文明时代的先祖,演变为“三皇”之首,地位不断升高。女娲神话与伏羲神话的发展脉络彼此交错,既自为一体又相互结合。梳理其演变轨迹,分析二神神话不同阶段出现的原因及内涵,有助于探索中国神话的历史文化意蕴及其民族文化精神。     

基于物联网的在线、智能调度方法的相关思考

物联网的飞速发展给生产调度系统带来了前所未有的机遇和挑战,数据的多源异构和连续涌入性、信息的透明性以及人、物料、设备、生产过程、产品等众多对象呈现出的连续动态存在性,这些新特征导致传统的调度优化方法难以适用。在已有研究的基础上,总结了物联网、调度优化方法以及基于情景的建模方法的研究现状和存在的问题,分析基于物联网的在线智能调度涉及到的问题及其特征,并提出其中的关键科学问题是基于情景的在线建模方法;提出该问题未来的研究目标为:针对物联网环境下调度对象状态的动态连续变化性,提供一种在线实时的智能优化调度方法,以最终实现调度优化过程的连续性以及调度优化决策的科学性、有效性和实用性;并详细阐述了未来关于基于情景的建模方法、基于情景的模型实时求解方法和基于情景的在线调度决策支持方法三方面的研究内容,为后续的深入研究做前期的思考和探索。     

Exact calculation of power and sample size in bioequivalence studies using two one‐sided tests

The number of subjects in a pharmacokinetic two‐period two‐treatment crossover bioequivalence study is typically small, most often less than 60. The most common approach to testing for bioequivalence is the two one‐sided tests procedure. No explicit mathematical formula for the power function in the context of the two one‐sided tests procedure exists in the statistical literature, although the exact power based on Owen's special case of bivariate noncentral t‐distribution has been tabulated and graphed. Several approximations have previously been published for the probability of rejection in the two one‐sided tests procedure for crossover bioequivalence studies. These approximations and associated sample size formulas are reviewed in this article and compared for various parameter combinations with exact power formulas derived here, which are computed analytically as univariate integrals and which have been validated by Monte Carlo simulations. The exact formulas for power and sample size are shown to improve markedly in realistic parameter settings over the previous approximations. Copyright © 2014 John Wiley & Sons, Ltd.     

Priority Rules for Multi‐Task Due‐Date Scheduling under Varying Processing Costs

We study the scheduling of multiple tasks under varying processing costs and derive a priority rule for optimal scheduling policies. Each task has a due date, and a non‐completion penalty cost is incurred if the task is not completely processed before its due date. We assume that the task arrival process is stochastic and the processing rate is capacitated. Our work is motivated by both traditional and emerging application domains, such as construction industry and freelance consulting industry. We establish the optimality of Shorter Slack time and Longer remaining Processing time (SSLP) principle that determines the priority among active tasks. Based on the derived structural properties, we also propose an effective cost‐balancing heuristic policy and demonstrate the efficacy of the proposed policy through extensive numerical experiments. We believe our results provide operators/managers valuable insights on how to devise effective service scheduling policies under varying costs.     

对中国国库集中支付制度改革的思考

随着中国财政体制改革的不断深入,国库集中支付制度在全国范围内开始逐步推广实施,这项制度的推行对于中国的经济发展具有极其深远的意义。本文主要研究了进行国库集中支付制度改革的意义和所存在的问题,在此基础上提出了进一步完善国库集中支付制度的思路。     

Order statistics from non-identical right-truncated Lomax random variables with applications

In this paper, we derive some recurrence relations for the single and the product moments of order statistics from n independent and non-identically distributed Lomax and right-truncated Lomax random variables. These recurrence relations are simple in nature and could be used systematically in order to compute all the single and product moments of all order statistics in a simple recursive manner. The results for order statistics from the multiple-outlier model (with a slippage of p observations) are deduced as special cases. We then apply these results by examining the robustness of censored BLUE's to the presence of multiple outliers. Received: November 30, 1998; revised version: March 8, 2000