渗透检测ⅡC—d法在液化石油气储罐检测中的应用

针对压力容器中重要设备液化石油气储罐——纵、环焊缝及母材受湿H2S腐蚀易产生表面裂纹,危险性高等特点,将无损检测渗透检测技术应用到该类裂纹检测中,可以大大提高对表面开口性裂纹缺陷的检出率,利于保证检测质量.     

锅炉汽包环焊缝缺陷安全评定分析

对陕西金泰氯碱化工有限公司自备电站1#锅炉汽包环焊缝缺陷通过缺陷简化为裂纹模型进行安全评定计算,计算结果表明该缺陷不影响汽包安全运行。     

液化石油气汽车罐车防波板联接处-角焊缝裂纹缺陷的处理

本文针对液化石油气汽车罐车防波板联接处角焊缝裂纹缺陷的修补,分析论述了裂纹产生的原因及加强汽车罐车日常使用、维护保养的必要性,探讨了对缺陷进行补焊的一些处理方法.     

TP321临氢管道接管焊接处开裂原因分析

石油化工工艺管道输送的介质,主要是高温、高压、腐蚀、有毒、可燃介质,临氢高压管道与接管连接焊缝结构多为角焊缝,对角焊缝无损检测单一,容易漏检缺陷,因此控制角焊缝的焊接质量尤为重要,减少事故发生的几率     

焊接热裂纹的危害及其防治措施

本文简单介绍了焊接裂纹的定义、分类及特征,着重介绍热裂纹的影响因素、形成机理、防止措施。研究焊接裂纹的目的是由于裂纹是焊接缺陷中危害最大的缺陷。金属构件如果存在焊接裂纹,将直接影响到产品的质量和性能。因此,采取适当焊接工艺措施,尽量避免焊接裂纹已经是生产中必不可少的环节。     

大口径镍基复合管的焊接

根据某石化公司原料气隐患治理工程镍基复合管道(20R+INCOLOY825复合管)焊接施工的成功经验,介绍了大口径镍基复合管的焊接技术。解决了复合管道焊接过程镍基合金具有可焊性差、导热性差和焊接时易出现热裂纹等技术难题,为以后此类大口径镍基复合管道的施工提供借鉴作用。     

弧焊常见焊接缺陷产生的原因及防止措施

对焊缝表面尺寸、裂纹、未焊透、未熔合、气孔、夹渣、焊瘤、弧坑、夹钨等缺陷的产生原因,危害性和防止措施进行介绍.     

铬镍奥氏体不锈钢管与紫铜管的气焊工艺研究

不锈铜与紫铜的物理及化学特性差异较大,焊接时焊缝及熔合区容易产生裂纹、晶间腐蚀和气孔等质量问题.基于铬镍奥氏体不锈钢管与紫铜管的理、化特性和焊接特性,针对热裂纹、晶间腐蚀和气孔等产生的原因,选择合适的填充材料、气焊焊接火焰,凭借焊接技术经验能有效降低两者焊接接头处热裂纹、晶间腐蚀和气孔等问题的产生,实现铬镍奥氏体不锈钢管与紫铜管的高质量气焊焊接.     

特种钢材sa335-p92焊接质量控制

p92钢具有一定的冷裂纹敏感性,其冷裂纹敏感性略低于p91钢,但是焊缝热热影响区性能对工艺的敏感性大.为了保证接头的"使用性能合格",避免在运行中提前失效.在现场焊接全过程中,严格执行焊接工艺评定,旁站监督检查.通过对焊接工艺、焊后热处理工艺和操作手法上进行严格的控制,从而不仅保证了焊缝无损检验一次合格率100%,而且焊缝的化学成分和金相组织都符合要求.     

含缺陷X52油气管道裂纹扩展规律的研究方法探讨

由于我国现役油气管道服役时间长,且存在腐蚀等缺陷,与滑坡等自然灾害共同作用时常导致管道事故的发生。以X52油气管道为研究对象,利用ABAQUS有限元分析软件,构建管道三点弯曲模型并进行数值模拟分析,计算缺陷周围的应力分布情况,研究缺陷位置分布、尺寸大小等对裂纹扩展的影响。提出了研究含缺陷管道的裂纹扩展一般规律的研究方法,且研究结论对于油气管道的建设与运行管理具有深远的意义。     

Investigating the importance and cognitive satisfaction attributes of service quality in restaurant business - a case study of TASTy steakhouse in Taiwan

ABSTRACT

In this research, we proposed an effective approach to investigate the importance and satisfaction attributes of service quality of a restaurant business. For understanding the gaps of service quality cognition between consumers and servers, our work can be used as a reference for helping restaurants improve their service quality and reuse their resources effectively. We applied DINESERV scales and five-point Likert scales as quantitative research tools. The Kano model, customer satisfaction index, regression analysis, improvement effort index, and importance-performance analysis (IPA) were applied as measurement tools to examine the importance of various service attributes. Our approach was implemented in a famous restaurant in Taiwan: TASTy Steakhouse. The relative priority of service quality attributes for improving this chain restaurant and its competitiveness are ranked and discussed.     

Injuries,inequalities and health in Europe

Injuries account for a significant burden of mortality, morbidity, disability and health care costs. They differentially affect age and sex groups and reveal massive inequalities in occurrence within and between countries in Europe. Within countries, the poor suffer most and have least ability to change their exposures to risk. Addressing inequalities in injury occurrence would play a valuable role in reducing the differential burden of ill-health between rich and poor. Despite the evidence for many effective injury-related interventions, limited attention has been devoted to addressing injuries as a public health priority. This paper questions why attention has been limited to date and suggests policy action to support injuries being addressed as a mainstream concern by national and international health policy-makers. The paper briefly highlights the public health burden of injuries and violence; illustrates the range of inequalities that characterise their occurrence; highlights the scope for public health action and considers the extent to which policies that reduce the overall burden of injuries may also reduce inequalities in their occurrence; and finally examines why there has been a limited policy response to date and suggests ways of advancing the agenda.     

Howard,John A. and J. Hulbent. Advertising and the Public Interest. Chicago: Crain,Inc., 1973

Abstract

This study presents a content analysis of sexual portrayals in magazine advertisements during 1964 and 1984. The results show that the percentage of ads with sexual content did not increase over the twenty-year period, but that the types of sexual portrayals did; sexual illustrations became more overt; and there was a greater reliance on visual than verbal sex in 1984 than 1964. The study also found that female models are more likely to be portrayed as sexually clad, partially clad or nude than were male models.     

Excel在投资项目概率分析中的应用

当前绝大多数财务评价分析者不会编程且仅熟悉Excel的基本应用,所以在财务评价中较少作概率分析,从而严重影响了投资项目财务评价质量。探讨如何使不会编程的财务分析者利用Excel进行投资项目的概率分析。给出概率的一般过程;常见分布函数随机数产生的过程及其在Excel中的具体实现方式;结合案例演示了Excel在概率分析中的具体运用及其处理技巧。该应用方法能使大多数的财务评价分析人员能够进行投资项目的概率分析,提高项目财务评价的质量。     

Consumer behaviour in the credit card market: a banking case study

This paper analysed the demographic, socio‐economic and banking‐specific determinants that influence the choice of credit cards. A multinomial logit model was run on a recent portfolio of banking customers based in Italy. The model incorporates the type of credit cards as the dependent variable and a set of explanatory variables. The empirical results provided useful insight into the structural characteristics of the card payment system and offered a microeconomics perspective to analyse consumers' behaviour and preferences. Overall, women, older people, residents in the centre of Italy and secondary card owners are more likely to acquire a classic card. Gold cards are preferred by older customers, whereas younger clients have a higher probability to choose a revolving card, which is also preferred by the residents in the North‐east. The analysis on the continuous variables highlighted that Italy can be regarded as a ‘conservative’ market with room for credit card upgrading and expansion into more sophisticated products.     

从台湾输入观赏鱼的风险分析及检疫管理措施

本文在比较研究台湾与大陆观赏鱼疫病发生情况、易感染观赏鱼种类、对行业危害程度等的基础上,经过风险识别,确认从台湾输入观赏鱼需要进行风险评估的水生动物疫病。采用定性风险评估的方法对这些水生动物疫病进行风险分析,并根据风险分析结果,提出从台湾输入观赏鱼应关注的疫情疫病名单和观赏鱼种类,以及有效降低疫情疫病传入的风险管理措施。     

无堆焊衬里热壁加氢反应器的H2S腐蚀

本文介绍了在压力为4．0Mpa、温度为385℃条件下使用的13CrMo44无堆焊衬里热壁加氢反应器的H2S腐蚀情况，减缓H2S对反应器腐蚀的影响因素和在用反应器使用中应注意的问题。     

How can we reliably measure the occurrence of non-fatal injury?

Introduction In England, there is no reliable indicator for measuring the occurrence of non-fatal injury. As a consequence, we do not know whether the rates of non-fatal injury are increasing or decreasing. Purpose This paper addresses two questions: what criteria should an indicator of non-fatal injury satisfy, and can we identify an indicator that satisfies these criteria? Method Criteria for a good indicator of non-fatal injury are postulated, and an indicator based on serious long-bone fractures is proposed. Inferences from the literature and the various non-fatal injury data to which we have access are used to justify the criteria, and to test the proposed indicator of serious injury against the criteria. Findings There is significant evidence to justify the use of the following criteria to assess indicators of non-fatal injury: the indicator should reflect the occurrence of injury satisfying some case definition of anatomical damage; the injury cases ascertained should be important in terms of incapacity, impairment, disability, quality of life, cost, and/or threat-to-life; cases should be completely ascertained from routinely or easily collected data; and the probability of a case being ascertained should be independent of social, health services supply and access factors. Our analysis indicates that an indicator based on serious long-bone fracture admitted to hospital is likely to satisfy each of these criteria for a good indicator. Conclusion An indicator of non-fatal injury occurrence based on serious long-bone fractures exhibits favourable characteristics when judged against our criteria for a good indicator.     

贸易网络与企业出口动态

本文探讨国际贸易网络对企业出口动态的影响及其作用机制。首先以2000—2016年跨国双边贸易数据为基础构建国别贸易网络指标体系,衡量一国在全球贸易体系中的相对位置,并由此对接中国企业层面出口数据构建企业出口网络指标,再进一步在引力模型中研究企业贸易网络对出口动态的影响。研究发现:将企业贸易网络指标引入到引力模型后,模型对于企业出口动态的解释力更强。企业当期的一阶、二阶和高阶贸易网络指标提高一个单位,会使得企业—市场下期成功出口的概率分别提升4.86%、4.70%和8.93%,出口额分别增加68.55%、65.25%和128.86%,成功存活的概率分别提升5.97%、5.76%和10.90%。在基准回归中加入扩展地理距离项与控制不同层面固定效应后,结果依然稳健。异质性分析表明,中国企业的出口会根据不同层面的目的地网络信息进行调整,网络信息对企业出口动态的影响存在产品异质性。动态分析表明,相较于地理距离,企业贸易网络指标对企业出口动态有着更强的解释力。本文提出了将网络分析方法与计量经济学相结合的新思路,具有一定的学术价值。     

Public service quality and customer satisfaction: exploring the attributes of service quality in the public sector

Beyond the existing SERVQUAL-based research, the authors develop an alternative model of public service quality. The various sources of public service quality are explored and a new classification scheme formulated by using critical incidents technique. Four main qualities of public service are identified: process quality, outcome quality, design quality, and relationship quality. The findings suggest that the critical attributes of public service quality for customer satisfaction differ according to the types of customers in the public sector. Final customers (beneficiaries) give priority to the process and outcome qualities, whereas intermediary customers (social workers) have high regard for the design and relationship qualities.