萘系深加工产品技术动态

阐述了高效减水剂,2,6-二烷基萘,2,6-萘二甲酸和聚萘二甲酸乙二醇酯等萘系深加工产品的最近技术动态。     

Impacts of climate change on building performance in New Zealand

Climate change is expected to impact on many aspects of building performance, with much of the existing and future building stock likely to be affected. Potential impacts of climate change on buildings are identified, evaluated as to how serious they might be, and actions are considered to ensure that future building performance is not compromised. Climate change scenarios for New Zealand defined the scale of climate changes considered for building performance. For each climate variable, relevant aspects of building performance were examined to determine if there is likely to be a significant impact. Where significant impacts were indicated, they were studied in detail and quantified where possible. A risk-profiling tool was formulated to cover the risk/severity of the most significant climate change impacts, which include flooding, tropical cyclones and overheating. Adaptation strategies were developed for each climate change impact, with different responses appropriate for each impact. Mitigation of greenhouse emissions is also addressed. For those risks where delaying action has serious consequences, it may be appropriate to consider changes in building or zoning regulations to anticipate the future impacts of climate change. Some implications for future building performance, design, standards and regulation are discussed.

On peut s'attendre à ce que les changements aient des incidences sur de nombreux aspects des performances des bâtiments et que la majorité des bâtiments existants et futurs soit touchée. Cet article recense les conséquences potentielles des changements climatiques sur les bâtiments, les évalue quant à leur gravité et étudie les mesures à prendre pour que les performances des futurs bâtiments ne soient pas compromises. La Nouvelle-Zélande a étudié des scénarios de changements climatiques pour définir leur échelle en fonction des performances des bâtiments. Pour chaque variable climatique, on a examiné les aspects pertinents des performances des bâtiments afin de déterminer si elle est susceptible d'avoir un impact significatif. Lorsque c'est le cas, ces impacts ont été étudiés en détail et, dans la mesure du possible, quantifiés. On a conçu un outil de profil des risques pour couvrir les risques et la gravité des conséquences les plus importantes des changements climatiques, ce qui inclut les inondations, les cyclones tropicaux et les vagues de chaleur. Pour chaque conséquence des changements climatiques, on a formulé des stratégies d'adaptation, avec différentes réponses appropriées à chaque impact. On a également étudié l'atténuation des émissions de gaz à effet de serre. Quant aux risques pour lesquels tout retard dans les mesures à prendre aurait des conséquences sérieuses, il pourrait être judicieux d'envisager de modi? er la réglementation concernant les bâtiments ou le zonage afin d'anticiper les conséquences futures des changements climatiques. Cet article traite également de certaines implications pour les futures performances des bâtiments, conceptions, normes et réglementations.     

中国铝型材市场及未来发展趋势

随着中国大规模的基建投资和工业化进程的快速推进,铝型材作为建筑领域和机械工业领域里重要的应用材料,产量和消费量迅猛增长,中国成为世界最大的铝型材生产国。本文主要从生产、贸易及消费三方面对铝型材市场进行论述,并对其发展前景及趋势进行分析。     

ON THE ROBUSTNESS TO SMALL TRENDS OF ESTIMATION BASED ON THE SMOOTHED PERIODOGRAM

Abstract. In this paper we are concerned with the robustness of inferences, carried out on a stationary process contaminated by a small trend, to this departure from stationarity. It is shown that a smoothed periodogram approach to model fining and parameter estimation is highly robust to the presence of a small trend if the underlying stationary process is short-range dependent. If the underlying process is long-range dependent the robustness properties are still good but now depend on the Hurst index of the process and deteriorate with increasing Hurst index.     

矿山工程设备发展趋势及安全管理

根据露天矿山机械设备使用发展趋势以及相应的维修安全管理方面的内容,揭露出机械设备在使用的过程中存在一定的不利因素,严重影响设备的安全管理,这些因素主要包括机械设备的定期润滑,经济因素,人员配备因素,故障检测以及设计方案。通过对存在的问题进行研究分析后提出切实可行的措施,制定完善的安全管理体制和执行标准,利用新型的检测技术和故障检测技术。     

Magnitude and categories of pedestrian fatalities in South Africa

Road traffic injuries, a major global public health burden, are concentrated in low-income and middle-income countries.(1) In contrast to high-income countries, pedestrians make up the largest group of road traffic injuries and fatalities in low- and middle-income countries. This article presents an analysis of pedestrian fatalities (2001-2004) in four South African cities. The article describes the magnitude, demographic, and temporal factors associated with pedestrian fatalities and presents a typological analysis to identify particular groups of at risk pedestrians. The analysis can serve to inform the development of prevention programmes tailored to the needs of specific at risk pedestrian groups. Data were obtained from the National Injury Mortality Surveillance System (NIMSS). The results indicated that there were a total of 7433 pedestrian deaths (2001-2004) for the four cities and the majority occurred over weekends. Most (56.7%) were between ages 20 and 44 years. Overall, there were 3.3 male pedestrian deaths for every female pedestrian death, and over half (58%) of the 4004 cases tested were positive for alcohol. A typological analysis identified three categories of pedestrian fatalities: (1) male pedestrian fatalities that showed high levels of alcohol concentrations, (2) female and elderly pedestrian deaths that occurred between 6 AM and midday, and (3) children, adolescents, and young adult pedestrian fatalities that typically occurred during weekday afternoons and evenings. The findings call for multiple strategies for combating pedestrian fatalities.     

美国信息安全发展对中国发展战略的启示

近两年,美国总统奥巴马执政以来出台了一系列网络安全战略,使之成为美国国家安全战略的一部分。国家层面的战略计划、法律法规也相继出炉,体现了美国将迎来信息安全政策的重大调整。本文主要介绍了近两年以来美国的信息安全战略部署和信息安全立法动向,为我国的信息安全战略调整提出了几点借鉴的启示。     

企业OA建设现状及发展趋势

本文从OA概念入手,介绍了国内企业OA建设现状,存在的问题以及未来OA发展趋势三方面进行了详细论述。     

电力过程自动化技术发展趋势

随着社会及电力工业的发展,近些年来电力自动化的重要性与日剧增。传统的信息、通讯和自动化技术之间的障碍正在逐渐消失。最新的技术,包括无线网络、现场总线、新型检测及控制仪表、先进管理和控制软件等,大大提升了过程系统的效率和安全性能。本文着重分析讨论了国外电力过程自动化的最新动态及发展趋势。