The Quest for Quality Improvement: Using Six Sigma at Starwood Hotels and Resorts

In 2001, Starwood Hotels and Resorts announced that it would be the first hospitality company to embrace Six Sigma, a quality improvement program where the development and adoption of innovative customer-focused solutions were to result in improving the quality and consistency of guests' experiences and lead to enhanced financial performance. The purpose of this article is to illustrate this process improvement program and to document the application of Six Sigma within the hospitality industry. Findings indicated an increased use of cross-functional team approaches, effective use of expanded stakeholder partnerships, and the adoption of objective techniques and statistical testing to solve problems and improve the bottom line.     

Modelling and trading the EUR/USD exchange rate at the ECB fixing

The motivation for this paper is to investigate the use of alternative novel neural network (NN) architectures when applied to the task of forecasting and trading the euro/dollar (EUR/USD) exchange rate, using the European Central Bank (ECB) fixing series with only auto-regressive terms as inputs. This is done by benchmarking four different NN designs representing a higher-order neural network (HONN), a Psi Sigma Network and a recurrent neural network with the classic multilayer perception (MLP) and some traditional techniques, either statistical such as an auto-regressive moving average model, or technical such as a moving average convergence/divergence model, plus a naïve strategy. More specifically, the trading performance of all models is investigated in a forecast and trading simulation on the EUR/USD ECB fixing time series over the period 1999–2007 using the last one and half years for out-of-sample testing, an original feature of this paper. We use the EUR/USD daily fixing by the ECB as many financial institutions are ready to trade at this level and it is therefore possible to leave orders with a bank for business to be transacted on that basis. As it turns out, the MLP does remarkably well and outperforms all other models in a simple trading simulation exercise. However, when more sophisticated trading strategies using confirmation filters and leverage are applied, the HONN network produces better results and outperforms all other NN and traditional statistical models in terms of annualized return.     

Supply chain analysis of e-tailing versus retailing operation – a case study

The swift growth of e-commerce or e-tailing as a consumer retail channel has made it a serious competitor to traditional retail channels and is changing consumers’ purchasing behaviour. The purpose of this case study, based on Target and Amazon.com, is to analyse the attributes of traditional retailing, e-tailing, and hybrid supply chain models to form conclusions about the feasibility of an idealised supply chain model for the future. An integrated and generalised modelling framework is used that incorporates Six Sigma – define, measure, analyse, improve, control methodology leveraging various tools, including process flow maps, cause and effect diagram, performance efficiency metrics, failure mode and effects analysis (FMEA), and Monte Carlo simulation. Based on this analysis and research, the conclusion is that the idealised supply chain of the future may evolve into a hybrid supply chain, which includes both e-tail and retail channels. The main recommendations from this study include assessing the risks of migrating to such a hybrid supply chain and to leverage the recommended actions provided in the hybrid FMEA. To facilitate more effective and mature processes, this study can guide researchers in exhaustive empirical evaluations of hybrid supply chains, gather experiences and lessons learned for practitioners.     

中国企业六西格玛管理实施模型研究

随着六西格玛管理的迅速推广,不少中国企业通过实施六西格玛取得了显著的效益,当在实施六西格玛管理过程中也存在很多问题。因此,了解六西格玛在中国的实施现状,总结适合中国企业实施六西格玛管理的模式至关重要。文章基于对六西格玛管理关键成功因素的分析,构建了适合中国企业的六西格玛管理实施模型。为中国企业通过实施六西格玛管理建立一套持续改进的管理模式奠定了基础。     

中小型服务企业实施六西格玛的SWOT分析

对于我国的中小型服务企业能否有效的应用六西格玛管理方法解决质量问题,并提高企业的竞争能力和盈利能力,目前还存在着争议。文章拟在介绍六西格玛成功实施的关键因素的基础上结合了中小型服务企业的特点,对我国的中小型服务企业能否实施六西格玛进行了SWOT分析,并提出了决定实施六西格玛与否和如何有效实施六西格玛的几点策略。     

高效运行 全面提升 质检机构的竞争力——基于六西格码的质检机构信息化探讨

本文介绍了基于六西格码在产品质量检测机构信息化的实现方式,分析了工作流程信息化、客户关系管理系统、智能决策系统这三种信息化手段,来实现业务和管理的持续改进、成本的降低,提高客户和员工的满意度,使质量检测机构在竞争中立于不败之地。