数码相机定位系统中系统标定模型

基于合理的假设,根据相机成像的原理建立针孔模型,分析了相机成像的几何模型,引入了旋转矩阵和位移向量,推出靶标与像之间的映射关系及其计算公式。通过实验利用靶标上点的坐标和其像上对应点的坐标,以及相机参数和实验数据,采用逆向投影的方法,求解出映射矩阵,然后代人靶标的坐标,从而确定靶标上的点在像平面上的像坐标,最后对其进行误差分析。所得误差在合理的范围之内,因此,该模型具有一定的可行性和实用性。     

The matrix approach to market analysis

Assessment of current and future market development is enhanced by systematic review, analysis and evaluation of accumulated records. The information matrix provides such an approach. Its primary purpose is to present past data, current experience and projections for the future. An illustrative example shows how this method works for data analysis by product and market area for sales volume, contribution to profit and overhead, and the costs of production, marketing and distribution. The development and evaluations of projections is facilitated by means of the matrix approach.     

关于加强函授站管理的探索

函授站在高等教育中发挥着重要作用,它是发展成人教育最重要的途径之一,设立函授站也是广大求学者的迫切要求.然而当前高校函授站在管理中仍存在很多问题:函授站设置不合理;函授生源日趋减少;函授站教学管理滞后;函授教育管理队伍素质亟待提高.因此在函授站管理中应规范办学行为,完善管理制度;加强师资队伍、管理队伍建设;改革考试办法,探索教学新模式;建立评估制度,完善监控体系.     

超短脉冲干涉自相关导数光谱的啁啾特性

采用对二次干涉自相关（IAC）迹线求一阶导数,得到干涉自相关导数光谱（D-MOSAIC）,并利用该导数光谱对啁啾有很高灵敏度的特性,对高斯型强度分布的线性啁啾、平方啁啾脉冲进行数值计算与模拟,得到导数光谱的峰值与啁啾大小的对应关系．提出了一种新颖的测量超短激光脉冲啁啾的方法,同时得出干涉自相关导数光谱能够精确地测量超短激光脉冲的啁啾大小．     

一种电力系统在线动态安全评价模式识别法研究

文章讨论了一种应用模式识别进行电力系统在线动态安全评价的方法,利用发电机摇摆过程中转子间的最大相对摇摆角与故障前各发电机输出的有功功率之间存在的连续映射关系,用高阶多项式作为判别函数,来逼近其映射.多项式的系数用最小二乘法拟合确定,结果显示较一般方法学习简单,速度较快,更适合多个预想事故情况下共用.     

Investigation of giving behavior to united way using log-linear modeling and discriminant analysis: An empirical study

Giving behavior toward a charitable organization is modeled by two different procedures: discriminant analysis and a log-linear model. Although the discriminant procedure is beter known in marketing, the log-linear approach has less restrictive model assumptions and may more accurately represent the conceptual basis of consumer decisions. Two situations are considered: (1) a simple binary classification of the giving decision, and (2) a three-group case of no gift, small, and large gift. Utilizing a large data base and a holdout sample for comparative purposes, the log-linear procedure is found to be an attractive alternative to discriminant analysis in terms of correct classification of individuals. Research support for this study was provided by the School of Business, University of Louisville     

各向异性厚板固有频率的精确解

该文抛弃薄板理论的位移和应力假设，利用矩阵分析和三维弹性动力学理论，导出四边简支各向异性厚板的固有频率方程。该方法可推广应用于各向异性层合板动力分析。     

运用情景教学法增强《基础会计》实训课的趣味性

作为会计专业的入门课程《基础会计》课,对于会计知识近乎空白又缺乏社会实践经验的高职学生而言,显得比较抽象。采用情景教学法,即在仿真的会计环境下,将实际会计工作中经常用到的各种凭证、账簿、报表等以实物的形式展示给学生,不但增强了学生的感性认识,加深了对专业知识和岗位职责的理解,还激发了学生学习会计专业课程的兴趣,从而树立起学好本专业的决心和信心。     

客源地居民对南京市重点旅游景区的感知差异研究——以苏、锡、常等七客源地为例

通过对苏锡常等7个客源地居民的抽样调查，获得丰富的基础数据，利用SPSS13．0软件统计分析，探讨了客源地居民对南京市重点旅游景区的知晓度、信息获取渠道、出游意愿以及出游偏好等方面的感知差异特征，并在此基础上提出一些相关营销建议。     

基于改进的灰色Markov链的预测方法及其实证

文章将灰色预测模型GM(1,1)与Markov链方法相结合,建立灰色Markov预测模型,预测波动上升的数据系列,改进了状态转移矩阵的传统计算方法,对状态施行动态滑动转移,用更新的一步状态转移概率矩阵,对未来数据所处的状态进行一步或多步预测.在实证中,以黄石市农民年人均纯收入为例,把农民收入看作一个灰色系统,农民人均收入看作灰色量,通过过去年份的数据挖掘,在Mathematica7.0环境下,给出了2009年黄石农民年人均纯收入的状态预测,并提出影响预测精度的若干因素.     

Predictive validity of ethnic identification measures: An illustration of the English/French classification dilemma in Canada

To establish the predictive validity of ethnic identification measures, respondents in the Montreal Urban Community were surveyed and measured on a variety of ethnic dimensions. The data was then fed to a clustering algorithm. Two-group clustering assignments were then compared to traditional taxonomic measures. It is shown that some measures do an excellent job in classifying respondents, while others, which are commonly used in practice, do not fare as well.     

眼动实验法在旅游广告有效性研究中的应用初探

本研究采用眼动实验法,以25名美国大学生为被试者,记录他们在阅读澳大利亚＂远程操控旅游＂旅游产品广告时的眼动注视过程,以探讨广告呈现形式、位置等因素相关性是否影响受众对旅游广告的注视,旨在对旅游领域的广告有效性评价和受众阅读体验研究带来新的思考和启发。     

Nonlinear mapping: An alternative to multidimensional scaling for product positioning

This study tests and contrasts the ability of multidimensional scaling (MDS) and nonlinear mapping (NLM) in recovering complex data structures in attribute space, and aiding researchers and practitioners in making neighborhood interpretations. The relative merits of both MDS and NLM for product positioning are explored and discussed. A formal comparison of the performance of NLM versus MDS is presented using both simulated and actual data. The results of this study provide direction as to the conditions under which a nonlinear mapping algorithm is preferable over MDS.     

英语阅读教学思考

本文从语言学与认识学的角度阐述了阅读理解的本质，意在探讨提高学生英语阅读理解能力的教学思路。文章指出，根据语言学理论，完整的阅读理解教学应包括字面理解、推理性理解、评价和欣赏能力的培养，而每一种能力的培养，又包含多种阅读策略和方法的训练，因此，这一教学思路也同时对英语教师提出了更高的要求。     

Perceptions versus performance when managing extensions: new evidence about the role of fit between a parent brand and an extension

The extant literature contends that a new product extension’s success is an increasing function of the parent brand’s quality and the degree of fit between the parent brand and extension. We develop theory to explore relationships between parent quality, image fit and functional fit. Each of these components should trigger positive pre-purchase associations from the parent. However, at the point of sale, high levels of functional fit are expected to increase the probability of substitution between parent and extension. To test this and related assertions, we augment UPC scanner data with perceptual measures for 42 matched parent–extension pairs. Findings confirm that high parent quality negatively impacts an extension’s sales when functional fit is high. Equally telling, low parent quality can actually increase an extension’s sales in some cases. We use our fitted model to present counter-factual experiments to show the magnitude of these increases or decreases under combinations of our key variables and extension type, line or brand. The combinations we explore occur frequently in-market.     

The critical incident technique: A flexible method for the identification of salient product attributes

A number of techniques have been developed for product attribute research, such as depth interviewing or focused group interviewing of a small sample of respondents. One major limitation of such techniques is the long interview time per respondent. However, without prior knowledge of attributes it is difficult to specify the relevant question in advance and a shorter interview may miss uncovering important information. In view of such conflicting demands for less time and more information, a compromise solution can perhaps be found in making use of the ‘critical incident’ method of research investigation. This method seems to offer advantages, especially to the practising marketers. The present study is concerned with developing a conceptual approach to the development and use of the ‘critical incident’ approach to consumer behavior studies. It illustrates that through a semi-structured depth interview approach it would be possible to identify the nature and significance of key elements in the product attributes of importance to consumers. Additionally, the descriminant and predictive ability of such ‘critical elements’ has been investigated through an empirical example.     

A simple procedure for finding a composite of several multidimensional scaling solutions

One of the better known procedures for finding a representative composite of several different MDS solutions is based on Carroll’s generalized canonical correlation model (Carroll 1968). However, the program for implementing the fitting of this model has not received wide distribution. The present paper provides a simple computational method for implementing Carroll’s approach and shows its relationship to ordinary principal components analysis. In addition, we provide an algorithm for computing the parameters of Carroll’xs model in the presence of missing data. Each method is illustrated with data sets drawn from a marketing research study.     

Tariffs and income: a time series analysis for 24 countries

We argue for a new approach to examining the relationship between tariffs and growth. We demonstrate that more can be learned from time series analyses of the experience of individual countries rather than the usual panel data approach, which imposes a causal relation and presents an average coefficient for all countries. Tentative initial results using simple two-variable cointegrated VAR models suggest considerable heterogeneity in the experiences of the countries we look at. For most, however, there was a negative relationship between tariffs and levels of income for both the pre- and post-Second World War periods. However, in the second half of the twentieth century, the causality ran from income to tariffs: that is, countries simply liberalized as they got richer. Policy decisions based on the usual panel approach might thus be very inappropriate for individual countries.     

基于F2806平台步进电机升降速设计

步进电机作为一种位置精确的运动控制单元,在工业控制领域获得广泛应用。但是步进电机启动与停止的开始瞬间会产生失步或过冲,文章提出一种线性的加减速算法,采用相对简单的数学运算实时的计算参数,替代了传统的查表法。直线型加减速算法在Matlap7.0平台与TMS320F2806平台功能实现后并应用到铺布机两轴控制系统,取得了较好的实验效果。     

Validating the S-O-R paradigm for consumer involvement with a convenience good

The Houston and Rothschild S-O-R consumer involvement paradigm is tested for validity with measures of involvement for a shampoo purchase decision. A multitrait-multimethod matrix approach confirms the convergent and discriminant validity of the measure employed. A causal modeling analysis suggests that enduring involvement may work through situational involvement to influence consumer responses. Marketing implications are discussed.