关于网络计划技术中结点时间的求解

指出网络计划技术中求解结点时间是网络时间计算的重点．抓住结点,就可突破网络．在笔者多年实践的基础上向读者推荐一有利于读者学习和使用的简易口诀和简图．最后举例加以说明．     

略论中国古典小说人物形象的塑造

明清时期是中国古典小说的鼎盛时期,创造了多种艺术技巧和艺术形式,塑造出许多不朽的人物形象.中国古典小说家在塑造人物形象,反映社会生活时,为了更好地突出人、景、情的和谐统一,形成了一套独具特色的塑造人物的技巧和方法,给读者留下了深刻的印象,为以后小说的发展奠定了基础.     

Using the Delphi Method to Classify Medical Specialties

One medical specialty classification system applicable for research and career counseling is the person‐oriented versus technique‐oriented taxonomy. Given that the model was conceptualized in the 1960s, verification based on how medical specialties are practiced and viewed today is necessary. Five specialists in medical career development and advising verified the categorization of specialties. Based on their review, 100% consensus was reached regarding grouping of specialties. This outcome validates the taxonomy of medical specialties and supports its continued use for medical career specialty advising and choice.     

水中Wastu技法结合颅骶疗法治疗下背痛的疗效观察

目的探索水中Wastu技法与颅骶疗法结合治疗下背痛的临床疗效和可行性。方法收集下背痛患者9例,给予水中Wastu技法与颅骶疗法,共治疗5次,治疗前、治疗后分别用视觉模拟评分(VAS)、站立多关节屈曲手指与脚尖距离变化,焦虑自评量表进行疗效评定,并进行统计学分析。结果治疗5次后,9例患者的各项评分都较治疗前有所改善,结果具有显著性相关关系。结论水中Wastu技法与颅骶疗法联合治疗下背痛安全舒适,疗效满意,患者依从性高,是可行的综合治疗方法。     

Matrix mean square error comparisons based on a certain covariance structure

For two given estimators of a parameter vector the covariance structure of their difference is used to compare them in terms of their mean square error matrices. The results obtained are applied to the covariance adjustment technique and regression     

Estimation on Varying-Coefficient Partially Linear Model With Different Smoothing Variables

The authors give the estimation on the varying-coefficient partially linear regression model with different smoothing variables. The efficient estimators of the intercept function and the coefficient functions are obtained by a one-step back-fitting technique based on their initial estimators given by local linear technique and the averaged method. Furthermore, their asymptotic normalities are given. Some simulation studies are used to illustrate the performances of the estimation.     

Conditional Akaike Information Criteria for a Class of Poisson Mixture Models with Random Effects

Focusing on the model selection problems in the family of Poisson mixture models (including the Poisson mixture regression model with random effects and zero‐inflated Poisson regression model with random effects), the current paper derives two conditional Akaike information criteria. The criteria are the unbiased estimators of the conditional Akaike information based on the conditional log‐likelihood and the conditional Akaike information based on the joint log‐likelihood, respectively. The derivation is free from the specific parametric assumptions about the conditional mean of the true data‐generating model and applies to different types of estimation methods. Additionally, the derivation is not based on the asymptotic argument. Simulations show that the proposed criteria have promising estimation accuracy. In addition, it is found that the criterion based on the conditional log‐likelihood demonstrates good model selection performance under different scenarios. Two sets of real data are used to illustrate the proposed method.     

论“后体系时代”立法学研究之嬗变——基于立法方法论的考察

在立法迈向"后体系时代"的背景下,立法学研究所凸显出的研究转向与研究之嬗变,需要我们认真考察。立法学嬗变的动因在于法律体系向法治体系转变过程中的理论诉求,具体包括法律创制转向法律实施、宏观法治转向微观法治两个方面的理论诉求;立法学嬗变的走向是从立法原理的认识论、立法价值的价值论、立法制度设计的本体论转向以立法技术为中心的方法论研究;立法技术主要由包括形式结构规范技术、实质结构规范技术的立法表达技术与以立法前评估、立法后评估为主要内容的立法评价技术构成。     

中国古代数学家李冶数学文化及教育思想研究

李冶是中国数学史上宋元四大名家之一,他不仅是一位杰出的数学家,而且也是一名著名的教育家。他先进的数学文化及教育思想对现代高校数学教育仍然具有很强的指导和借鉴意义。本文主要从李冶辉煌的数学成就、先进的数学文化观和认识论、先进的数学教育理念以及卓越的实践教育活动等对李冶数学文化及教育思想进行系统研讨,旨在从中得到新的教益和启发。     

西方现代人事测评技术评介

人事测评是人力资源管理过程中一个重要环节,人事测评技术是推动人力资源管理科学化水平的动力。综合运用能质测评技术、管理中心评价技术、人事测评信息反馈技术、直观定性和统计定量的人事测评技术、人事测评评判技术等人事测评技术,采取定量与定性分析并重,主观与客观相统一,系统内外相结合,感性与理性相融合,等等,为科学地选拔人才提供了可靠的依据。