The Transport System and Society’s Metabolism in the UK

This paper analyses the interrelation between the transport system and measures of resource consumption such as material and energy consumption over a 60-year period (1937–1997) in the UK. Non-motorized transport and time consumption for mobility are estimated in addition to conventional measures of transport. During the period analyzed, the UK population grew by 20% while transport of goods and persons increased more than threefold and material and energy consumption almost doubled. The transport intensity of domestic material input (DMI) doubled to 300 ton-kilometers (tkm) per ton of DMI while the transport intensity of domestic energy consumption (DEC) doubled to 20 tkm per gigajoule (GJ) of DEC. Thus, while the material and energy intensity of GDP declined significantly, a well-established trend in many advanced countries, the transport intensity of materials and energy consumption rose. These findings suggest a close link between transport, economic development, and long-term structural transformations. In the case of personal transport, a rebound effect was also observed: whereas the average speed of transport has greatly increased, the average number of hours per day devoted to personal transport has not declined.     

灰色动态预测模型在货币供应量预测中的应用

在对金融系统中货币供应量的预测进行相关研究的基础上,介绍了符合金融系统预测规律的灰色系统动态预测法,并根据中国货币供应量的实际数据进行了实证的预测检验。结果显示,这种方法简单,不需要借助于其他任何时间序列数据,需要数据量少,预测精确度高,对于近期预测尤其准确,也可进行中长期预测;实证预测结果也符合我国金融系统中货币供应量预测的实际。     

东亚区域经济合作的约束条件及主导力量——“10＋1”合作模式可行性研究

在全球各区域经济合作中,东亚区域经济合作处于制度推进的初级阶段。在东亚合作约束条件序列中,经济整合度和贸易开放约束较小,主导国和主导力量约束次之,政治和文化约束最大。与欧洲和北美区域经济合作不同,东亚文化背景殊异;百年殖民历史伤痛犹新;放弃国家主权疑虑重重,还没有形成能够协调各方利益和促进区域经济合作的稳定制度机制。在内部和外部条件限制下,东亚经济一体化只能通过三个相互割裂的“东盟10 l”机制“迂回”推进,而且在相当长时期合作采取的是自由贸易区方式。     

组块构建记忆策略训练--提高高一学生英语词汇学习质量的实验研究

本研究在总结有关词汇学习研究成果的基础上,提炼出组块构建记忆策略的概念,并在高中一年级英语教学中进行组块构建记忆策略训练,结果表明:(1)组块构建记忆策略训练,可显著地提高高一学生英语词汇学习质量和词汇记忆技能,能改善高一学生的英语学习观念、态度,激发高一学生的英语学习兴趣;(2)不同类型的学生受益程度不一样;(3)本实验所采用的组块构建记忆策略训练方法、途径能提高高中英语词汇教学质量,这为中学英语词汇教学提供了新的教学方法与途径。     

按"七一"讲话精神加强和改进党的建设

江泽民同志"三个代表"的重要思想,特别是在庆祝建党80周年大会上的重要讲话,为党的建设提出了明确的目标和要求.迎接党的十六大,就要按照这些要求,把党的建设的各项任务真正落到实处.要采取有效措施,加强和改进党的思想理论建设、政治建设、组织建设、作风建设和制度建设.要深入研究党的执政规律和执政方式、党的阶级基础和社会基础、党内民主建设、劳动和劳动价值等问题,力求作出深入、科学的回答.     

Distance graphs on R n with 1-norm

Suppose S is a subset of a metric space X with metric d. For each subset D⊆{d(x,y):x,y∈S,x≠y}, the distance graph G(S,D) is the graph with vertex set S and edge set E(S,D)={xy:x,y∈S,d(x,y)∈D}. The current paper studies distance graphs on the n-space R ₁ ⁿ with 1-norm. In particular, most attention is paid to the subset Z ₁ ⁿ of all lattice points of R ₁ ⁿ . The results obtained include the degrees of vertices, components, and chromatic numbers of these graphs. Dedicated to Professor Frank K. Hwang on the occasion of his 65th birthday. Supported in part by the National Science Council under grant NSC-94-2115-M-002-015. Taida Institue for Mathematical Sciences, National Taiwan University, Taipei 10617, Taiwan. National Center for Theoretical Sciences, Taipei Office.     

利用和声分散搜索算法解决动态共乘的乘客选择研究

动态共乘作为一种配合解决城市交通出行难题的新模式近年来引起了人们越来越多的关注，然而在较大范围内选择合适的乘客，以便获得最佳的综合服务效果却具有相当大的挑战性。本文正是针对这一问题，建立了以乘客效用最大化和司机总行程最短为目标函数，以满足司机与乘客的时间要求和司机参与约束为限制条件的多目标0-1规划共乘模型，用于帮助司机选择最合适的乘客。根据该模型的特点，构造了加入了分散搜索机制的新的和声搜索算法。在仿真实验时，针对司机和乘客效用的两种产生方式，在较大规模的路网环境下利用该算法分别对模型进行了求解，得到了Pareto最优解集。仿真结果不仅表明了模型的合理性和算法的可行性，而且还指出基于效用函数可以发现更多合适的潜在乘客。最后，通过与文献中其它算法的对比进一步展示了本文算法的有效性。     

Semiparametric inference of proportional odds model based on randomly truncated data

This paper studies the estimation in the proportional odds model based on randomly truncated data. The proposed estimators for the regression coefficients include a class of minimum distance estimators defined through weighted empirical odds function. We have investigated the asymptotic properties like the consistency and the limiting distribution of the proposed estimators under mild conditions. The finite sample properties were investigated through simulation study making comparison of some of the estimators in the class. We conclude with an illustration of our proposed method to a well-known AIDS data.     

DNA芯片技术

DNA芯片可用于核酸序列的测定及基因突变检测等，这里对DNA芯片的制作、作用原理、性能及用途等进行了综述。     

元大都戏剧艺人略论

元大都辉煌的戏剧文化是杂剧家和戏剧艺人共同创造的。大都的戏剧艺人的演艺水平很高，一大批演员都具有角色行当上的专长。在大都梨园中不乏夫妻或父母子女同为艺人的，由此形成了一些艺人之家或艺人世家，元代戏剧艺人演艺水平之高，与此种现象有内在联系。此外，大都一些戏剧艺人在文学创作上也有令人瞩目的成绩。