Using Lean Six Sigma to improve mobile order fulfilment process in a telecom service sector

This study proposes and follows a specific and systematic framework for implementing Lean Six Sigma (LSS) methodology in a telecom company in order to improve customer satisfaction by minimizing the company’s response time to customer requirements. The goal of this study was achieved by utilizing several LSS tools under five phases of the DMAIC methodology. Unlike previous studies in the telecom sector that used only qualitative method, in this study, both qualitative and quantitative methods were utilized to draw meaningful conclusions. As a result of the implementation of the LSS methodology, the average order fulfilment lead time for sales orders (SO) and value-added service (VAS) orders was reduced from 10.3 to 5.9 days and from 1.5 to 0.5 days, respectively. The reduction in lead time resulted in an increase in the sigma level for SO and VAS orders from 0.44 to 1.26 and from 0.73 to 2.66, respectively. These improvements were expected to lead to a financial benefit in savings of over $600,000 per year in operational costs, enhancements to customer experience and an increase in revenue generating opportunities. Moreover, this article enriches the existing literature on the application of LSS concept in the service industry, and helps the company to speed up the response to customer requirements.     

Translating cross-lagged effects into incidence rates and risk ratios: The case of psychosocial safety climate and depression

Longitudinal studies are the gold standard of empirical work and stress research whenever experiments are not plausible. Frequently, scales are used to assess risk factors and their consequences, and cross-lagged effects are estimated to determine possible risks. Methods to translate cross-lagged effects into risk ratios to facilitate risk assessment do not yet exist, which creates a divide between psychological and epidemiological work stress research. The aim of the present paper is to demonstrate how cross-lagged effects can be used to assess the risk ratio of different levels of psychosocial safety climate (PSC) in organisations, an important psychosocial risk for the development of depression. We used available longitudinal evidence from the Australian Workplace Barometer (N?=?1905) to estimate cross-lagged effects of PSC on depression. We applied continuous time modelling to obtain time-scalable cross effects. These were further investigated in a 4-year Monte Carlo simulation, which translated them into 4-year incident rates. Incident rates were determined by relying on clinically relevant 2-year periods of depression. We suggest a critical value of PSC?=?26 (corresponding to ?1.4 SD), which is indicative of more than 100% increased incidents of persistent depressive disorder in 4-year periods compared to average levels of PSC across 4 years.     

谈新时期图书馆员的继续教育

从分析太原理工大学图书馆人员现状入手 ,结合国内外图书馆员继续教育发展状况 ,提出图书馆开展继续教育的具体措施 :进行在职教育和在职培训     

谈大学英语四级考试与学生英语能力的提高

大学英语四级考试有着很强的权威性与可信度,但其负面影响越来越突出,尤其是学生英语能力并没有根本上得到提高。本文从学生、教师、大学英语管理考核层三个方面来论述如何提高我国学生的外语能力,以便适应新世纪大学英语教与学的需求。     

Bayesian analysis of discrete time warranty data

Summary.  The analysis of warranty claim data, and their use for prediction, has been a topic of active research in recent years. Field data comprising numbers of units returned under guarantee are examined, covering both situations in which the ages of the failed units are known and in which they are not. The latter case poses particular computational problems for likelihood-based methods because of the large number of feasible failure patterns that must be included as contributions to the likelihood function. For prediction of future warranty exposure, which is of central concern to the manufacturer, the Bayesian approach is adopted. For this, Markov chain Monte Carlo methodology is developed.     

试论扩招后高校社会治安综合治理

通过对学校社会治安状况的调研,弄清校园及周边社会治安综合治理的重点、难点;分析其普遍性和特殊性;弄清校园及周边人、财、物的动态平衡关系,着力提高防范能力,以便对校园及周边实施科学管理,降低治理成本。运用辩证唯物主义的立场、观点和方法掌握其规律性,有针对性地解决高校扩招后学校社会治安综合治理工作的问题,有力保证学校教学、科研工作,从而促进高校改革的顺利进行,为当地政府和学校领导提供高校扩招后学校社会治安综合治理工作的决策依据。     

职业地位取得的社会性别差异

本文从描述被调查夫妇之间职业流动的性别差异出发，分别勾画出他们的地位实现模型。首先验证了不论性别，教育地位都是决定职业地位实现的首要变量；但也正是在教育地位的实现和向上流动(再求学)中，伴随婚姻生育等生命事件的发生，无形的结构性制度因素(意识形态层面的性别制度、性别规范和性别文化)正如后现代主义试图解构的那样依然支配着性别角色的社会化和继续社会化，使扮演双重角色的妻子或无意识地或有意识地遭遇了丈夫不为之所累的两难困境，并最终阻碍了女性的教育地位、既而是职业地位的实现。本文最后提出了三点建议和几个尚待解决的问题。     

“以人为本”与我国民事诉讼程序的完善

以“以人为本”为研究视点，从立法和司法两方面对其便民的内涵进行分析的基础上，对我国传统民事诉讼制度及其观念进行了理性分析，认为我国民事证明制度和诉讼模式在选择上与我国司法实际不相适应。并从保障当事人的程序主体地位、构建人性化的诉讼程序及建立案件分流制度全新视角探讨我国民事诉讼程序制度完善的思路。     

几个一致连续的充要条件

本文利用极限定义及归结原则等方法,给出了几个一致连续的充要条件,得到了判定函数一致连续的有效方法。     

教育心理学研究方法体系的发展历程与新取向

教育心理学在其独立成为一门学科时,就借鉴自然学科的研究方法初步建立起了包括研究方法论、研究方式、具体方法和技术三层次的研究方法体系。经过学科建立20世纪到50年代的发展和60年代后的完善,逐渐形成了较为完善的教育心理学研究方法体系。在新的历史条件下,其研究方法论、方式和方法表现出综合化、生态化、科学化、本土化等发展取向。