ASSESSING CONGRUENCEAMONG DISTANCE MATRICES: SINGLE-MALT SCOTCH WHISKIES REVISITED

A test of congruence among distance matrices is described. It tests the hypothesis that several matrices, containing different types of variables about the same objects, are congruent with one another, so they can be used jointly in statistical analysis. Raw data tables are turned into similarity or distance matrices prior to testing; they can then be compared to data that naturally come in the form of distance matrices. The proposed test can be seen as a generalization of the Mantel test of matrix correspondence to any number of distance matrices. This paper shows that the new test has the correct rate of Type I error and good power. Power increases as the number of objects and the number of congruent data matrices increase; power is higher when the total number of matrices in the study is smaller. To illustrate the method, the proposed test is used to test the hypothesis that matrices representing different types of organoleptic variables (colour, nose, body, palate and finish) in single‐malt Scotch whiskies are congruent.     

GPS接收机P(Y)直捕方法研究

GPS接收机P(Y)直捕算法是基于存储的滑动相关搜索,并利用FFT将时频二维联合搜索变成时域一维搜索。同时,考虑位同步点已知的条件,接收资源池只需存储一段接收序列,缩短了捕获时间且利于硬件实现。仿真结果表明,多普勒频移为±5kHz时,所带来的峰值衰减为2dB左右,本地信号与接收信号对齐时出现明显的相关峰,很好地实现了捕获功能;提出了用重叠分段补零FFT操作实现并行相关,成倍降低了捕获时间;提出了利用位同步信息,避免了码极性翻转可能引起的信噪比损耗;针对码相位漂移,提出了优化捕获策略,可在短时间内完成重捕。     

对近年来我国建设用地扩张的分析

着眼近年来我国的建设用地面积增长扩张的现状,分析了造成建设用地扩张的原因,指出城镇人口的增加、经济发展的需求、征地制度的实施和经济利益的驱动是建设用地扩张的主要因素。总结出建设用地过度扩张,会对我国粮食安全和生态安全构成威胁。由此提出严格控制利用土地谋利益,避免建设用地过度扩张。     

Holistic trajectories: a study of combined employment, housing and family careers by using multiple-sequence analysis

Summary.  Social science applications of sequence analysis have thus far involved the development of a typology on the basis of an analysis of one or two variables which have had a relatively low number of different states. There is a yet unexplored potential for sequence analysis to be applied to a greater number of variables and thereby a much larger state space. The development of a typology of employment experiences, for example, without reference to data on changes in housing, marital and family status is arguably inadequate. The paper demonstrates the use of sequence analysis in the examination of multivariable combinations of status as they change over time and shows that this method can provide insights that are difficult to achieve through other analytic methods. The data that are examined here provide support to intuitive understandings of clusters of common experiences which are both life course specific and related to socio-economic factors. Housing tenure is found to be of key importance in understanding the holistic trajectories that are examined. This suggests that life course trajectories are sharply differentiated by experience of social housing.     

供应链风险产生根源的理论分析

根据现有文献研究成果,结合实际调研分析,将供应链风险因素整理归纳为系统风险、供应风险、物流风险、信息风险、财务风险、管理风险、需求风险和环境风险。每种风险因素并非独立存在,而是相互影响、互为根源。其非线性叠加结果将会放大供应链整体风险水平。因此,必须认识到其存在的风险,只有在明确各种风险产生根源的基础上,才能恰当地制定、选择和采取有效措施,规避风险,确保供应链整体绩效稳步提高。     

海伍德对政治学核心概念的独到分析与诠释——《政治学核心概念》评介

《政治学核心概念》是一部在国外政治学界有广泛影响的著作。在这部著作中,海伍德强调了政治概念的特殊重要性并对此进行了独到的解释;探讨了政治概念在实际应用中存在的特殊问题并进行了有深度的分析;对"规范性概念"和"描述性概念"进行了富有启发意义的区分与阐释。该书不仅展现了作者在政治概念界定与诠释上的学术专长与独到之处,也体现了作者在政治学知识再现与传播上尽量贴近读者与学生的教师情结与风范。     

《汉语大字典》书证疏误举例

《汉语大字典》在义项的书证方面存在一些疏误,内容涉及书证欠妥、书证有误、引文失误、一例两用等问题。     

农户参与流通型专业协会意愿的影响因素分析 ———基于陕西5 个苹果基地县21 个村农户调查数据的分析

利用陕西5个国家级苹果基地县450户苹果种植户的调查数据，采用Logit模型对农户参与流通型专业协会意愿的影响因素进行计量分析。研究发现：农户苹果收入占家庭总收入的比重，是否通过协会销售过苹果，获取市场信息的渠道是否多样，公司到本地收购次数，本村是否是公司基地村与农户参与流通型专业协会的意愿存在正相关关系；而农户苹果销售顺畅情况，本村是否存在果农协会与农户参与流通型专业协会的意愿存在负相关关系。此外，农户参与流通型专业协会的意愿存在明显的地区差异。     

从张爱玲的音乐与色彩描写论其苍凉艺术

“苍凉”是张爱玲小说创作的主体风格。张爱玲以她对音乐与色彩的独特理解和完美运用，使其成为一种意象，是表现人物心理、暗示情节以及揭示人物命运、感悟人生、反映社会的重要手段，从而更深刻地表达了她的“苍凉美学”。     

中国上市公司财务预警实证研究

在对国外公司财务预警经典研究成果进行回顾和总结的基础上,运用多元判别分析方法（MDA）和逐步判别分析（Stepdisc）等方法逐层推进构造预测模型,以经济实用为选择标准,最终建立一个预测准确率最高、变量最少的适合中国实际情况的财务危机预测模型。