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The Web service ( database, network ) performance and other service quality is a measure of customer satisfaction is the key index, WUM through user congestion records found site performance bottleneck, prompting the site administrator to improve Web caching strategy, network transmission strategy, traffic load balancing mechanism and data distribution strategy.
Through the analysis of network intrusion data to find weaknesses in the system, can improve the safety.
Data preparation for mining World Wide Web browsing patterns Journal of Knowledge and Information Systems,1999,1(1):32-57
In Proceedings of the International Conference on E-Commerce and Web Technologies(ECWeb2000),2000.

The structural defects that reduce the service life and traffic safety accumulate in the surface layer of rails even after transportation of 100 million tons of cargo [3].
Collection of articles of the international scientific and technical conference.
Zhekhanova, Influence of nonequilibrium crystallization conditions on the volume ratio of structural constituents in the alloy 75 wt% Al2O3 - 25 wt% ZrO2, Chelyabinsk Physical and Mathematical Journal. 31(185) (2012) 34-39

They can enhance the train speed and traffic safety for their excellent danping function and resistance fatigue properties.
International Journal of Pavement Engineering, 7(2006) 101-110

China couldn't change the coal-based power source structure, but, in order to raise the safety and reliability of power supply and make sure the economy increases continuously in high speed, the development of distributed power system, exploiting and using of reproducible power source is necessary and indispensable[3].
For example, the 4000kw project of gas turbine co-production of heat and electricity in energy center of Shanghai Pudong International Airport, the 1000kw project of gas turbine co-production of heat and electricity in Central Hospital of Shanghai Huangpu District, project of co-production of heat, electricity and cold in Beijing Zhongguancun[5].
Even at the traffic fastigium over 80% of the vehicles are off-stream.
References [1] Li Chao, Qian Hong and Ye Jian-hua: Distributed generation and the technique of its joining up to the grid, Journal of Shanghai University of Electric power, Vol.9(2008), P.277-281(In Chinese) [2] Zhang Xiao-yun: Distributed generation and research on its related techniques, Ganshu Science and Technology, Vol.6(2009), P.40-41(In Chinese) [3] Chen Jin-fu, Lu Yan-sheng: Discuss about application of distributed generation in China, Science od hydroelectric, Vol.23(2005), P.61-63(In Chinese) [4] DUGANRC，PRICESK: Issues for distributed generation in the US , IEEE Power Engineering Society Winter Meeting，Vol.1(2002), P.121-126(In Chinese) [5] Wang Xin-mao: Discuss about some problems related to the development of distributed generation, Economy of electric power techniques, Vol.19(2007), P.6-9(In Chinese) [6] Tang Kun-ming, Wang Fu-song, Luo Jian and Zhang Tai-qing: Research on scheme of relay protection about electric power distribution network that contains distributed

Journal of Engineering Research, 24(1), 40-52
International Journal of Applied Engineering Research. 12(23), 13755-13758
Atanda, Mechanical and Microstructural Characterization of Ductile Iron Produced from Fuel- Fired Rotary Furnace, International Journal of Mechanical Engineering and Technology 9(1), 2018. pp. 694–704 [22] E.Y.
International Journal of Mechanical and Production Engineering Research and Development, 8(1), pp.915-922 [23] I.P.
Journal of Ecological Engineering Vol, 19, 3

Also located in a hub city easily accessible to traffic, near a motorway junction, that would allow the ambulance to reach the hospital immediately.
In social systems, "social architects" trying to change human behavior through carefully designed programs or workshops, involving members of a population to improve, for example, the livability and safety and environmental impact in their communities.
Over the past fifteen years or so, local authorities - alone or in concert with the private sector - have strongly relied on the planning and implementation of large-scale urban development projects (UDPs), such as museums, waterfronts, exhibition halls and parks, business centers, and international landmark events, as part of an effort to re-enforce the competitive position of their metropolitan economies in a context of rapidly changing local, national, and global competitive conditions [12].
Rizzo, Patto tra Pugliese Ciaccio e Bambin Gesù (2012) submitted to Journal Il Sole 24 ore Sanità (2012) [2] Information on http://www.sogesid.it [3] GU n.259 del 6-11-2012, "Urgent provisions of provinces and metropolitan cities"

The definition of safe speed was first proposed in 1972 Maritime International Rebuffed Rules by IMO, the chapter 6 shows that “vessels shall in safe speed at all times, so that she can take proper and effective actions to avoid collision happens, and can make stop within the distance of concrete conditions”, further explained in The Marine Regulations for Preventing Collisions, “ safe speed means after taking effective actions, the speed can make the boat stopped within the distance of concrete conditions[7].
TB 201002.1-2005, The basic standard of bridge and culvert of railway[s], Beijing:China railway publishing house 2005 [2] AASHTO 2009.Guide Specification and Commentary for Vessel Collision Design of Highway Bridges[S].American Association of State Highway and Transportation Officials, Washingtong D.C [3] FujiiY,Some factors affecting the frequency of accidents in marine traffic[J], Journal of nacigation 1974 (27), 29-235
[4] Y.Fujii, On the safety measures between ship and bridge [J] Chinese navigation,1986.12 [5] BS EN 1991-1-7-2006, Eurocode1-framework performance, CEN, 2006 [6] IMO.InternationalRegulations for Preventing Collisions atSea[M].

Thus, maintenance actions can be carried out in a timely manner, improving structural reliability and safety.
Takeda, Hierarchical sensing system for detecting impact damage in composite structures combining a fiber optic spinal cord network and distributed sensor nerve cell devices, Proc. 7th International Workshop on StructuralHealth Monitoring, Stanford, CA, USA, 2009, pp. 878-885
Wang, Carbon nanotube–cement composites: A retrospect, The IES Journal Part A: Civil&Structural Engineering 4 (2011) 254-265
Beaudoin, Electrical percolation phenomena in cement composites containing conductive fibres, Journal of Materials Science 31 (1996) 4093-4097
Kwon, A self-sensing carbon nanotube/cement composite for traffic monitoring, Nanotechnology 20 (2009)

The main factors and the main reasons contributing to the occurrence and development of probable emergencies at refineries are: equipment failure (corrosion, wear of parts and gaskets, deformation, expiration of term service); operation of non-sealed equipment; irregularity and low quality of maintenance; violation of the modes for the liquids pumping process (pressure, temperature, pumping speed); staff errors due to low-quality training or lack of experience; external factors (fires at neighboring facilities, traffic accidents).
However, it does not provide fire safety at the site, as pyrophoric deposits are insufficiently wetted with water, dry quickly and become re-ignitable.
Investigation of increased corrosion wear of heat exchange equipment pipes, II International Conference “Corrosion in the Oil, Gas Industry”, (2021). 225
Investigation of a pyrophoric iron fire in a Visbreaker fractionation column provides better cleaning work procedure, Journal of Loss Prevention in the Process Industries, 38 (2015) 268-275

Long-term performance and safety assessment of anchorage in geotechnical engineering.
Journal of structural engineering, 2005,131(2):322-328
International Journal of Rock Mechanics & Mining Sciences, 2010,47:1038-1045 [7] Li You, Bai Shiwei, Zhu Weishen, et al.
International Journal of Rock Mechanics & Mining Sciences, 2009,46:699-707
Journal of Geomechanics, 2006,12(2):166-173.