Agile Manufacturing Strategy and Business Ethics

Emergence of purchasing as a strategic function has not only broadened the scope of purchasing, it has also changed the responsibilities of the purchasing managers by empowering them to spend large sums of money in procuring goods and services. However, this has also presented them with an array of ethical dilemmas involving questionable purchasing practices. This study proposes a framework to examine ethicality of decision making when faced with such dilemmas and presents the results of a survey conducted to assess the ethical inclinations of purchasers operating in Singapore. The results give credence to the notion that ethicality of behavior is culture-specific and reconfirms the existence of ethical relativism.     

基于PCA的小波多分辨图像融合方法

提出小渡多分辨率下主成份分析（PCA）的图像融合方法。首先利用小波变换对融合图像进行多分辨率分解，然后利用主成份分析方法确定图像小波低频近似系数的洎适应融合权重，采用局部区域“能量”法进行小渡高频细节系数的融合，最后将小波融合系数逆变换实现图像的融合处理。实验结果证实融合图像的目标特征突出，易于目视解译。     

黑龙江省物流企业服务质量探析

黑龙江省物流产业正处于起步之后的上升态势,各类商品物资外运数量庞大,物流业市场需求较旺,有较好发展潜力和空间,然而要发展物流则服务需先行。以顾客感知物流服务质量为主线,结合前人对相关内容研究的理论和调查结果,分析出影响黑龙江省物流服务质量的五个维度,且这五个维度之间为并列关系。黑龙江省物流企业可以从订购质量、定制化服务质量、回应质量、交付质量、误差处理质量等方面增强物流服务质量,从而满足多样化的物流发展服务。     

知识工作者创新能力开发的维度与对策

知识工作者的创新能力是现代企业最重要的竞争能力之一.企业要使知识工作者创造更多的价值,就必须不断地开发和提高其创新能力.本文主要探讨了知识工作者的创新能力开发的三个关键维度,并提出了相关的对策建议.     

近50年广东省旱灾受灾面积的时序分形研究

应用非线性动力系统的理论分析了广东省1950-1999年的旱灾受灾面积时序变化的混沌特性;通过重构其嵌入的相空间达到恢复系统复杂的动力机制;经计算表明,该时间序列分布具有分形特性,是一混沌的时间序列;其饱和关联维教d为1．884。相应的饱和嵌入雏教为6。即：该系统的有效自由度为6个;初步给出了系统的影响因子;经计算反映系统混沌程度的指标Kolmogorov熵K=0．1135。结果显示它的平均可预报尺度在8-9年。     

Open Economy Dynamics in a Floating Exchange Rate Developing Country Context

ABSTRACT

This article develops a wavelet-based control model to simulate fiscal, monetary, and real exchange rate scenarios in an open economy developing country with an inflation-targeting regime. We use South African macro data to jointly simulate optimal fiscal and monetary policy under varying scenarios for real exchange rate stability with interest rate parity. As real exchange rate stability increases, the model simulates the effects on the trade balance under both a constant and depreciating real exchange rate. We find that short-term cycle stability problems are somewhat mitigated by allowing the real exchange rate to depreciate.     

Combining wavelet decomposition with machine learning to forecast gold returns

This paper combines the discrete wavelet transform with support vector regression for forecasting gold-price dynamics. The advantages of this approach are investigated using a relatively small set of economic and financial predictors. I measure model performance by differentiating between a statistically-motivated out-of-sample forecasting exercise and an economically-motivated trading strategy. Disentangling the predictors with respect to their time and frequency domains leads to improved forecasting performance. The results are robust compared to alternative forecasting approaches. My findings on the relative importances of such wavelet decompositions suggest that the influences of short-term and long-term trends are not stable over the full evaluation period.     

Comparison of dimension reduction methods for DEA under big data via Monte Carlo simulation

Data with large dimensions will bring various problems to the application of data envelopment analysis (DEA). In this study, we focus on a “big data” problem related to the considerably large dimensions of the input-output data. The four most widely used approaches to guide dimension reduction in DEA are compared via Monte Carlo simulation, including principal component analysis (PCA-DEA), which is based on the idea of aggregating input and output, efficiency contribution measurement (ECM), average efficiency measure (AEC), and regression-based detection (RB), which is based on the idea of variable selection. We compare the performance of these methods under different scenarios and a brand-new comparison benchmark for the simulation test. In addition, we discuss the effect of initial variable selection in RB for the first time. Based on the results, we offer guidelines that are more reliable on how to choose an appropriate method.     

广义服务质量的基本内涵和评价思路探析

文章拓展了顾客感知服务质量的概念,明晰了广义服务质量的内涵要素,分析了广义服务质量的基本内涵,初步构建了广义服务质量的评价思路框架。     

工程伦理视角下的建筑工程困境研究与对策

在我国工程建设中,由工程伦理所引发的工程问题,已经威胁到了社会稳定和人民群众安全。在推动工程建设健康发展的问题上,工程伦理提供了新的视角和途径。基于工程伦理内涵,通过工程伦理三重维度来分析工程建设健康发展困境以及探究工程伦理实践化的路径,以图有效改善建筑工程安全生态环境,逐步体现公正和谐的工程伦理精神。