室内燃气管道设计方案浅析

文章总结了室内燃气管道设计及存在的安全隐患,提出了室内燃气管道的设计与安全相统一。     

Are gold,USD, and Bitcoin hedge or safe haven against stock? The implication for risk management

This study investigates whether gold, USD, and Bitcoin are hedge and safe haven assets against stock and if they are useful in diversifying downside risk for international stock markets. We propose a combined GO-GARCH-EVT-copula approach to examine the hedge and safe haven properties of gold, USD, and Bitcoin. We then examine the attractiveness of these assets in reducing stock portfolio risk by using downside risk measures estimated by the proposed approach and other competing models. We also evaluate the relative performance of the proposed model in reducing downside risk with the competing models. The findings of the study indicate that the USD is the most valuable hedge and safe haven asset closely followed by gold, while Bitcoin is the least valuable. It is also observed that the proposed combined approach performs best in reducing the portfolio downside risk. The findings of this study are of significance for portfolio managers and individual investors who wish to protect the portfolio value during market turmoil.     

外债风险预警模型及中国金融安全状况评估

本文提出了一个用于预警一国外债风险的动态模型 ,即多元累计和模型。模型的用户 (债权人和债务国 )能很早地预测到可能导致债务国重订债务期限的金融危机。实证分析结果表明 ,模型具有提前 3年探测到债务国潜在的还债困难的能力。对中国经济金融安全状况的评估结果表明 ,模型可提前 1年发出预警信号。     

Sound Security,Safe Beijing

With the approach of the longawaited event, Chinese authorities have geared up to intensify security prepa-rations. In line with the ＂people-oriented＂ and ＂athletes-centered＂ ideas, Beijing will spare no efforts to provide quality services and to build a safe and comfortable environment that will satisfy all the Games＇ participants.     

浅谈Suroca排水渠项目工程施工管理

文章简述了Suroca排水渠工程在技术管理、资源管理、质量管理以及安全文明施工的一些经验,通过对排水渠工程施工管理,为安哥拉市政工程的施工提供借鉴。     

论电力电缆的安全运行与防火技术

现代城市电网中,电缆应用十分广泛。如果没有针对性的安全运行措施,一旦发生故障,危害极大。文章阐述了电缆着火的原因和特点,防止电缆延燃的措施和扑救方法及日常采取的措施和检查内容。     

数控机床的安全操作与维护

本文主要介绍了数控机床的安全操作规程、通电后的检查、数控机床维护的基本要求和维护内容。     

Risk‐Off Episodes and Swiss Franc Appreciation: The Role of Capital Flows

During episodes of increased global risk aversion, or risk‐off episodes, safe haven currencies such as the Swiss franc tend to appreciate. The immediate impact of a risk‐off shock is an increase in net private inflows to Switzerland, mostly driven by a reduction in Swiss residents’ net purchases of foreign debt securities and reduced foreign exposure by Swiss banks. Given that the bulk of capital movements related to risk‐off episodes is driven by decisions of Swiss residents, capital flow management policies that discriminate based on the residency of the investor (capital controls) are not likely to be effective at reducing the impact of risk‐off episodes. However, prudential policies that limit leveraging or foreign exposure by Swiss banks may diminish the volatility of capital flows during risk‐off episodes.     

The Ethics of Innovation: p2p Software Developers and Designing Substantial Noninfringing Uses Under the Sony Doctrine

This essay explores the controversy over peer-to-peer (p2p) software, examining the legal and ethical dimensions of allowing software companies to develop p2p technologies. It argues that, under the Supreme Court’s ruling in the Sony betamax case, technology developers must be accorded the freedom to innovate and develop technologies that are capable of substantial noninfringing uses. This doctrine, known as the Sony doctrine, provides an important safe harbor for technological development, including p2p. The safe harbor, however, does not immunize conduct beyond the design, sale, or supply of the product. For other conduct that falls outside the Sony safe harbor, the traditional standards of secondary liability apply.     

Community safety promotion at local,regional, and national levels. Summary report from a workshop on local organizing and societal contributions with regard to the development of Safe Communities,held at the Third International Conference on Safe Communities,June 6-8, 1994, Harstad,Norway

Aim The aim of this review was to determine the extent to which the effectiveness of countermeasures for preventing alpine skiing injuries has been evaluated. Methods The methodology involved a critical review based on the available international literature and sports equipment standards, as well as consultation with experts in the field. Where possible, the review focused on controlled trials. Results Key injury countermeasures in skiing identified in this review include physical conditioning programmes, ski-bindings and their timely release, professional adjustment of ski-bindings and the use of mechanical testing devices for this, design of ski pole handles, helmets for children (and adults), ski patrollers, skier education, speed control on the slopes and safe lifting equipment. A tabular categorisation of the types of evidence for the effectiveness of injury countermeasures is presented. This demonstrates that the weight of evidence is generally based on a combination of data-based or biomechanical testing evidence and informed opinion/anecdotal evidence. There is minimal evidence based on controlled trials in the field. The most evaluated countermeasures are ski bindings and ski pole handles. Properly adjusted ski bindings have the potential for a 3.5-fold reduction in lower extremity injuries, particularly knee injuries. Ski pole handle design needs further innovation and attention. An immediate concern is the generally poorer standard of children’s equipment, ski bindings and their adjustment. Conclusion Skiing is a sport that is growing in popularity, but with a need for controlled trials of its injury prevention countermeasures. This review provides a basis for further action in injury prevention research, development and implementation.