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Online since: December 2012
Authors: Juan Juan Hu, Li Li Li, Yu Long He
Global Climate Change and International Countermeasures Juanjuan Hu 1,2a, Yulong He1b, Lili Li2c 1 College of Architecture and Civil Engineering, Beijing University of Technology, Beijing, 100022, P.R.China 2Transport Management Institute,Ministry of Transport of the People's Republic of China,Beijing, 101601, P.R.China ahjj1008@sina.com, bylhe@bjut.edu.cn, clilili@bjjtxy.bj.cn Key words: Climate change, International negotiations, Countermeasure Abstract: Climate change is a world-wide problem.
In 2009, the international maritime accounted for 2.7 percent of the greenhouse gas emissions, and the international aviation accounted for 1.9 percent.Under the Kyoto Protocol, the developed countries, countries in economic transition should limit or reduce the greenhouse gas emissions caused by aviation and marine fuel consumption through the International Civil Aviation Organization (ICAO) and the International Maritime Organization (IMO).
In the negotiation of aviation emissions, developed countries agree to require the developing civil aviation countries to undertake the obligations of emission cut and to seek the industry breakthrough.
Online since: July 2013
Authors: Xin Zhang, Gang Ou, Cai Hua Li, Guang Fu Sun, Feng Tian
Configurable Modernized Navigation Signal Generation Method and Performance Analysis Xin Zhang1a, Feng Tian1, Caihua Li1, Guangfu Sun1, Gang Ou1 1 Satellite Navigation and Positioning R&D Center, School of Electronic Science and Engineering, National Univ. of Defense Technology, Changsha, China amarmy@163.com Keywords: Modernized navigation signal.
Modernized Signal Structure The public civil modernized BOC navigation signal mainly includes MBOC signal and AltBOC signal in GPS and Galileo systems, which are shown in Table 1[1,2,3,4].
Modernized civil signals in GPS and Galileo System Carrier[MHz] Modulation Type Chip Rate[Mcps] GPS L1C 1575.42 BOC 1.023 TMBOC 1.023 GALILEO E5a 1191.795 AltBOC 10.23 E5b 10.23 E1-B 1575.42 CBOC 1.023 E1-C 1.023 Being called MBOC(6,1,1/11) signals, both the GPS L1C signal and Galileo E1B/C signal with L1 frequency, are composed of a narrowband signal BOC(1,1) and a broadband signal BOC(6,1).
[3] Fontana, The New L2 Civil Signal, GPS World, 2001
Online since: November 2015
Authors: Barbara Woronko, Jerzy Trzciński, Sylwia Szerakowska, Maria Jolanta Sulewska
Comparison of Methods Determining the Angularity of Aggregate Particles SZERAKOWSKA Sylwia1,a *, SULEWSKA Maria Jolanta1,b TRZCIŃSKI Jerzy2,c and WORONKO Barbara2,d 1Bialystok University of Technology, Faculty of Civil and Environmental Engineering, 15-351 Bialystok, Wiejska 45E str., Poland 2University of Warsaw, Faculty of Geology, 02-089 Warszawa, Żwirki I Wigury 93 str., Poland asylwiaszerakowska@gmail.com, bm.sulewska@pb.edu.pl, cjerzy.trzcinski@uw.edu.pl, dbworonko@uw.edu.pl Keywords: geotechnics and geology, particle shape, angularity, roundness.
Particle shape raises more interest among geologists than among engineering geotechnical staff.
Civil Eng. 18 (2004) 36-45
Janoo, Quantification of shape, angularity, and surface texture of base course materials, Cold Regions Research and Engineering Laboratory, Special Report (1998) 98-1
Online since: January 2021
Authors: Elia Mercedes Alonso Guzmán, Wilfrido Martínez Molina, Francisco Javier Domínguez-Mota, Gerardo Tinoco Ruiz, José Alberto Guzmán-Torres
A Review of Concrete Performance Employing a Starch as Addition Using Several Regression Techniques José Alberto Guzmán Torres1,a, Francisco Javier Domínguez Mota2,b, Elia Mercedes Alonso Guzmán3,c, Wilfrido Martínez Molina4,d, and Gerardo Tinoco Ruiz5,e 1Faculty of Civil Engineering, UMSNH, Ciudad Universitaria, 58004 Morelia, Michoacán, México 2Faculty of Civil Engineering, UMSNH, Ciudad Universitaria, 58004 Morelia, Michoacán, México 3Faculty of Civil Engineering, UMSNH, Ciudad Universitaria, 58004 Morelia, Michoacán, México 4Faculty of Civil Engineering, UMSNH, Ciudad Universitaria, 58004 Morelia, Michoacán, México 5Faculty of Mathematics and Physics Science, UMSNH, Ciudad Universitaria, 58004 Morelia, Michoacán, México ajaguzman@umich.mx, bdmota@umich.mx, celia.alonso@umich.mx, dwilfrido.martinez@umich.mx, egerardo.ruiz@umich.mx Keywords: Concrete; Starch; Performance; Gradient descent.
Aggregate Physical Properties Mean Physical Properties Fine aggregates (Sand) Percent Absorption 2.71 Density (g/ml) 2.55 Apparent specific gravity(g/cm3) 1.42 Percent Surface Moisture 0.19 Percent Mesh # 200 5.45 Coarse aggregates (Gravel) Percent Absorption 3.40 Density (g/ml) 2.80 Apparent specific gravity(g/cm3) 1.51 Percent Surface Moisture 1.82 Methodology The fine (small) and coarse (larger) aggregates were collected and carried out to the laboratory of the Faculty of Civil Engineering, where they were dried, quartered, and macroscopically characterized.
Canadian Journal of Civil Engineering, 44(11):918-926, 2017
Advances in Materials Science and Engineering, 2014, 2014
Online since: August 2013
Authors: Chao Li, Yu Lan Wang, Jin Liang Xu
Research on Geographic Information System of Natural Zoning for Highway Li Chao1,a, Wang Yu-lan2,b, Xu Jin-liang3,c 1Civil Engineering Department, Shandong Jiaotong University, Jinan 250023, Shandong, China 2 Shandong communications Planning and Design Institute , Jinan 250031, Shandong, China 3 Key Laboratory of Special Area Highway Engineering of Ministry of Education , Chang’an University, Xi’an 710064, China alic211@163.com, bjinanhelen@sohu.com.cn, cgl15@chd.edu.cn Keywords: Highway engineering; Natural Zoning for Highway; Geographic Information System; database; Intelligent model; Web Service Abstract.
The natural zoning for highway cannot accurately reflect the relationship between the natural geographical factors and the highway engineering.
Canadian Journal of Civil Engineering, 2012, 39(12): 1321-1327
Mathematical Problems in Engineering, 2012
Online since: August 2013
Authors: Xin Liu, Rui Peng Tong, Ping Gao
Through investigating construction safety accident data of one city and combing with engineering construction site, construction works risk control system was built.
By using system engineering method of logical thinking to analyze these accidents, the author draw the conclusion that the reasons for accidents mainly depend on the four aspects of people, objects, environment and management.
Systems Engineering-Theory & Practice Issue 9 (2006)
Daisy Fan: Matlab Programming for Computing Science and Engineering (Trans Tsinghua University Press, Beijing 2012)
International Workshop on Information Technology in Civil Engineering Nov 2-3 (2002)
Online since: April 2014
Authors: Ming Chen, Zhi Bin Feng, Zhou Zhou, Ya Long Wang, Qiang Zhang
Nonlinear Numerical Study of Cold-Formed Lipped Channel beam-Columns Ming Chen1,a, Zhibin Feng1,b , Zhou Zhou1,c, Yalong Wang1,d and Qiang Zhang1,e 1School of Civil Engineering, Lanzhou University of Technology, Lanzhou, Gansu, 730050, China achenming@lut.cn, blutfengzhibin@163.com, cxiaozhou@163.com, dlzlwangyalong@163.com, elutqiangzai@163.com Keywords: Nonlinear numerical study, Cold-formed lipped channel, Beam-columns, Finite element program, Buckling mode.
Journal of Structural Engineering, Vol.111 (12) (1978), p. 2770-2783 [3] M.
Journal of Structural Engineering, Vol.113 (5) (1987), p. 1063-1078 [5] Yang, D., Hancock, G.
Journal of Structural Engineering, Vol.130 (12) (2004), p.1954–1963 [6] Schafer, B.W.
Journal of Structural Engineering, Vol.128 (6) (2002), p.728–736
Online since: April 2012
Authors: Qiang Wang, Kai Guo, Yan Xu, Shi Long Jia, Lin Liu
Ultrasonic inspection on concrete Internal defects of complex Joints of steel reinforced concrete (SRC) structure principle and application LinLiu1,a , QiangWang1,b, KaiGuo2,c ,YanXu2,d and ShiLongJia2,e 1Subway research institute, Shenyangjianzhu university, Shenyang110000, PR China 2 Civil engineering college, Shenyangjianzhu university, Shenyang110000, PR China aliumumu118@yahoo.com.cn, bwangqiangsy@163.com, c43404844@qq.com, d547560221@qq.com, e5880656@qq.com Key words: complex joints, NDT, ultrasonic inspection, abnormal value Abstract.
The quality criterion and engineering application of defects detection of complex joints of steel reinforced concrete (SRC) structure by ultrasonic method were described, and some problems requiring attention.
The engineering examples on ultrasonic testing of tower crane climbing attachment point For the super high-rise building construction, requires the use of tower crane.
References [1]Atorod Aziznamini, S.K.Ghosh,Steel Reinforced Conerete Struetures in1995 Hyogoken-Nanbu Earthquake,Journal of Struetrual Engineering,1997 August [2]Charles W.Roeder,Overview of hybrid and comPosire systems for seismic design in the United States,Engineering Struetures,Vol.20,1998 [3]China Engineering Construction Standardization Association standard, technological specification for inspection of concrete defects by ultrasonic method, [CECS 21:2000], BeiJ,2000
Online since: October 2012
Authors: Hong Zhu Quan
Effects of Sustained Elevated Temperature on Concrete Properties in Material Engineering and its Applications Hongzhu Quan School of Civil Engineering, Qingdao Agricultural University, Qingdao, Shandong, 266109, China quanhz719@yahoo.com.cn Keywords: Concrete, Elevated temperature, Compressive strength, Tensile strength.
Online since: February 2014
Authors: Feng Han, Rui Juan Zhang
The Quantitative Analysis Methods and Application of Environmental Impact on Railway location Ruijuan Zhang1,a,Feng Han2,b 1School of civil engineering, Lanzhou Jiaotong University, Gansu ,730070 2School of surveying and mapping and geographic information, Lanzhou Jiaotong University, Gansu ,730070 a770428860@qq.com bhanfeng740412@mail.lzjtu.cn Key words: railway location; environmental value; economical losing of environment impacts; application research Abstract.
And propose specific algorithms based on the protection cost method, shadow engineering method, and some other discounting methods.
Specific algorithms based on the protection cost method and shadow engineering method can use to calculate the various economic losses.
(3) Where Ci is the cost of protection engineering, and n is the number of protection engineering.
According to the shadow engineering method, it could calculate the economic losses caused by impairment of water conservation function by Eq.4