渤海油田N23H井测卡点和爆炸松扣关键技术

卡钻事故作为典型的钻井事故,耗费巨大的人力、财力和时间。N23H井作为渤海一批老油田综合调整井的代表水平井,在作业过程中发生了压差卡钻事故。在对N23H井卡钻过程、定向井轨迹情况、井身结构等做简单说明的基础上,介绍了事故的处理过程,同时对渤海油田测卡点技术现状简要说明,然后对本井大斜度长稳斜段测卡及爆炸松扣的难点做了分析,阐述了旁通短节和钻杆考克配合使用、爆炸松扣点上提下放悬重、扭矩的模拟方法以及正、反扭矩传递的有效措施与技术,成功完成本井测卡点和精确爆炸松扣作业。     

Would you really recommend it? Antecedents of word-of-mouth in medical tourism

Medical tourism (MT) is a valuable component of many national service economies. Understanding the marketing and recruitment of MT patients is therefore an important consideration for MT providers. Research shows that word of mouth (WoM) remains the most important acquisition channel in this sector. Yet, there is only a limited understanding of antecedent factors behind a patient referral. We develop a framework for WoM, finding support for tourism factors, service quality and perceived value as key antecedents on WoM referrals. We further extend the MT literature by integrating a novel perspective on value creation that surfaces the experiences of frontline service providers for the first time. This paper incorporates two complementary studies, one with a focus on value creation, the other on perceived value. By combing the two in a mixed-methods approach, we emphasise the role of service delivery on WoM. Several implications can be drawn from the study's findings.     

Halal tourism: antecedent of tourist’s satisfaction and word of mouth (WOM)

The concept of Halal tourism has emerged recently in research. It becomes an important factor in determining the satisfaction of tourists or their loyalty. However, this concept is still not well known; thus, it needs to be developed in certain areas. The research was conducted to see the link between the attributes of Halal tourism (i.e. Islamic facility, Halalness, general Islamic morality, and alcohol drinks- and gambling-free), satisfaction of tourists and word of mouth (WOM). The respondents of the research were 345 derived from 5 municipals in West Sumatera, Indonesia. The research used structural equation model. The result of the research shows that the attributes of Halal tourism have significant impacts on satisfaction of tourists and WOM. There is no significant direct relationship between the attributes of Halal tourism and WOM. However, the satisfaction of tourists is significant as the mediator. Furthermore, some limitations and future research are discussed.     

MOMENT EXPLOSIONS AND STATIONARY DISTRIBUTIONS IN AFFINE DIFFUSION MODELS

Many of the most widely used models in finance fall within the affine family of diffusion processes. The affine family combines modeling flexibility with substantial tractability, particularly through transform analysis; these models are used both for econometric modeling and for pricing and hedging of derivative securities. We analyze the tail behavior, the range of finite exponential moments, and the convergence to stationarity in affine models, focusing on the class of canonical models defined by Dai and Singleton (2000) . We show that these models have limiting stationary distributions and characterize these limits. We show that the tails of both the transient and stationary distributions of these models are necessarily exponential or Gaussian; in the non-Gaussian case, we characterize the tail decay rate for any linear combination of factors. We also give necessary and sufficient conditions for a linear combination of factors to be Gaussian. Our results follow from an investigation into the stability properties of the systems of ordinary differential equations associated with affine diffusions.     

Exploring word‐of‐mouth influences on travel decisions: friends and relatives vs. other travellers

Travel research consistently shows the importance of word‐of‐mouth (WOM) information sources in the travel decision‐making process. Friends and relatives have been identified as organic image‐formation agents, and it has been emphasized that this WOM information is one of the most relied‐upon sources of information for destination selection. While there has been recognition of the importance of WOM information sources on consumer behaviour in tourism, little has been performed to understand more specifically how and what behaviour is influenced. This study examined the differing influences of friends and relatives vs. other travellers on the travel choices and behaviours of 412 visitors to the North Queensland Region in Australia. More specifically, the present study compared the following four groups of respondents: those who indicated that they obtained travel information from friends/relatives and other travellers (n = 70); those who obtained information from friends/relatives only (n = 121); those who obtained information from other travellers only (n = 105); and those who obtained information from neither (i.e. no WOM) (n = 116). The results indicated that there were significant differences across the four groups with respect to demographic characteristics, other information sources used, accommodation and transportation used, and travel activities in the destination. However, the groups did not differ in their image of the destination.     

The effect of price on word of mouth: First time versus heavy repeat visitors

Many tourist destinations strongly focus and depend on repeat visitors. A central assumption thereby is that repeat visitors are more profitable (e.g. through lower marketing costs) and that their positive word of mouth (WOM) is essential to attract new guests. In this paper, we present a large-scale empirical study to investigate the effect of price for first time and heavy repeat visitors of ski resorts. Applying a hierarchical linear modelling approach, we show that price is negatively related to WOM for first time visitors and that price has no effect on WOM for repeat visitors. Thus, we show that the effect of price on WOM decreases for repeat visitors.     

浅谈新产品口碑营销的实施要素

本文从口碑营销的基本概念出发,对口碑营销成功实施中的五个关键要素进行了逐一的分析和阐述。     

电力变压器应用浅谈

文中对电力变压器进行了详细地概述,以及阐述了工作原理、送电、巡检项目、定期试验和保养、保护选择、并行条件以及防火防爆措施,并作出了结论。     

Short reports

In this study, we assessed the epidemiological patterns of suicide terrorism in the civilian population of Pakistan. Information about suicide terrorism-related events, deaths and injuries was extracted from the South-Asian Terrorism Portal (SATP) for the period from 2002 to October 2009. Of 198 events, civilians were involved in 194 events. Civilians accounted for 74.1% (N = 2017) of those who died and 93.8% (N = 6129) of those who were injured. In nine districts, mortality rates were more than one death per 100,000 inhabitants per year. The yearly trend showed a shift of attack targets from foreigners and sectarian targets in 2002–2005 to security forces or general public in 2006–2009. Attacks on public installations (mosques) or political gatherings resulted in a significantly greater (P ≤ 0.02) number of deaths (22 vs. 8) and injuries (59 vs. 24) per event compared with security installations. These results show that prevention might focus on political negotiation with armed groups and that appropriate measures should be taken to protect mosques and political gatherings.     

Strategy for New Product Development

Abstract

This study evaluates the reasons why new products fail, and recommends a Strategy for New Product Development to avoid such failures. Using a sample of four products, the Ford Edsel, Coca-Cola's New Coke, the Sony Betamax, and the RCA Videodisc, where the introduction of a new product was unsuccessful, as research data, it is determined that the most common reasons for a products failure are poor planning, poor management, poor concept, poor execution, poor use of research, poor technology, and poor timing. A recommended strategy for successful new product development includes a sound concept, an environmental assessment, management and planning, technological feasibility, research, quality assurance, and customer feedback.