论《琵琶记》的悲剧命运观

《琵琶记》在悲剧命运观的揭示上无疑具有开创先河的意义。它通过展示作为个体的人在与社会环境的各种冲突中,深刻地表达出那种“不可动摇的合理性与合情性”是如何既矛盾又统一的,以及这种统一又是如何使封建文人形成双重悲剧性格的;体现了剧作家对封建社会读书做官的传统价值观最直接的审视与怀疑。     

诺斯与马克思:关于社会发展和制度变迁动力的比较

道格拉斯·诺斯是新制度主义在经济史学方面的代表。他从总体上说是一个制度变迁动力的多元论者,但又视人口变化是制度变迁的最终动力。本文对诺斯关于制度变迁动力的解释与马克思关于社会发展动力的理论进行了比较,说明诺斯对马克思的生产力一元动力论的批评,即过分强调技术进步、缺少解释技术进步速率的理论,是缺少根据的。本文以有关史实证明,诺斯以人口增减为基本动因对所谓“两次经济革命”的解释是不成立的;不可更改的历史事实始终对马克思的一元论唯物史观提供着坚实而有力的支持。     

试论中国改革的政治伦理精神

中国改革不仅决定着中国的经济、政治命运,而且也决定着中国的社会命运.事实证明没有改革就没有中国的持续发展,"不改革就没有出路."改革使中国赢得了前所未有的辉煌,中国改革一开始就关爱和惠及着中国人民的切身利益.中国改革的整个历程,无论是在进程,还是在结果上,都充分体现着"以人为本"、"正义原则"和"民生民利"等耀眼的政治伦理精神.     

两个野生金针菇菌株栽培试验

试验采用野生菌株F．97、F．DT和常规菌株F．12进行以棉籽壳、木屑、玉米芯为主料的3个配方的对比试验。结果表明：F．97、F．DT的子实体产量和品质与对照无显著差异;但不同配方间的产量差异显著,商业栽培金针菇不宜大量添加杂木屑或玉米芯。     

Developing a new BIC for detecting change-points

Usual derivation of BIC for the marginal likelihood of a model or hypothesis via Laplace approximation does not hold for a change-point which is a discrete parameter. We provide an analogue l BIC, which is a lower bound to the marginal likelihood of a model with change points and has an approximation error up to O_p(1) like standard Schwartz BIC. Several applications are provided covering simulated r.v.'s and real financial figures on short-term interest rate.     

Optimal designs for tumor regrowth models

Most growth curves can only be used to model the tumor growth under no intervention. To model the growth curves for treated tumor, both the growth delay due to the treatment and the regrowth of the tumor after the treatment need to be taken into account. In this paper, we consider two tumor regrowth models and determine the locally D- and c-optimal designs for these models. We then show that the locally D- and c-optimal designs are minimally supported. We also consider two equally spaced designs as alternative designs and evaluate their efficiencies.     

Optimization Model and Algorithm for Crew Management During Airline Irregular Operations

Airline irregular operations have long been a realm where human experience and judgement are the most important tools to utilize. Crew management during irregular operations is usually the bottleneck of the whole system-recovering process due to complicated crew schedules and restrictive crew legalities as well as the size and scope of the hub-and-spoke networks adopted by major carriers. A system-wide multi-commodity integer network flow model and a heuristic search algorithm for the above purpose are presented and discussed in this paper. The computational experiences show that the algorithm is efficient enough to solve problems of realistic size and also has the flexibility to accommodate practical business requirements.     

周易哲学视角下组织过程的不确定性、情境决定论与变通

基于变通的思维方式,"关系"与作为正式制度的层级、官僚体系、组织结构、准则、规范等之间存在替代关系;非正式制度与正式制度之间存在替代关系;"此制度"与"彼制度"之间也存在替代关系。"变通"包括"通融"、"动态调整"、"引导"与"变革"4种方式。同时,基于"易"与"不易"的辩证关系,不确定性的制度安排有其"成本"和"收益"。中国的变通哲学有利于行为的创新,而不利于制度的创新;有利于渐进性创新,而不利于破坏性创新。     

论哲学范畴与思维方式的内在关系--兼论"效益"范畴与当代思维方式

哲学范畴与思维方式之间存在着内在的联系,一个时代的思维方式就是由当时的哲学范畴结成的"网",范畴的特点决定和体现着思维方式的特点,范畴系统的演变决定和体现着思维方式的变革.优化哲学范畴系统对优化思维方式具有重要意义.     

HORIZONTAL MERGERS IN THE PRESENCE OF CAPACITY CONSTRAINTS

We examine a merger between two competitors in a Bertrand‐Edgeworth model. We find that the effects of merger depend on the tightness of capacity constraints. The combination of two firms has no price effect if and only if the capacity constraints of all firms are binding both before and after the merger. However, a merger may turn a binding capacity constraint into a slack one, which results in higher prices. In an industry where excess capacity drives the premerger prices of all firms to the marginal cost, a merger may cause prices to rise even though aggregate capacity remains constant. (JEL L13, L40)