Search

Copyright of Guangdong Architecture Civil Engineering is the property of Guangdong Architecture Civil Engineering Editorial Office and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Journal of Technology Economics is the property of Chinese Society of Technology Economics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Environmental Science & Technology (10036504) is the property of Editorial Board of Environmental Science & Technology and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Journal of Ordnance Equipment Engineering is the property of Chongqing University of Technology and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Based on the input-output data from 2002 to 2017, this paper combined the three-stage DEA model with the non-competitive 1-0 model and measured the embodied carbon efficiency of export trade in China's 26 product sectors, and further investigated its influencing factors and convergence issues. The results of the study showed that; (T) The embodied carbon efficiency of export trade in China's overall product sector demonstrated a positive development trend from 2002 to 2017, and this positive trend was more obvious after the implementation of ecological civilization construction in 2012. But the differences of embodied carbon emission efficiency level among the product sectors were still significant. (2) Measured by the K-means clustering analysis method, this study found that agriculture, other service industries, wholesale and retail industries, catering industry, construction industry and manufacturing industry with strong innovation ability were mostly concentrated at high and medium efficiency levels, while industrial sectors with resource dependence and high energy consumption, such as metal smelting and rolling processing industries, non-metallic mineral products industry, and coal mining industry, were at a low efficiency level. (3) All product sectors had cr convergence, absolute (3 convergence and conditional (3 convergence during 2002 -2010 and 2010 -2017, and the level of each product sector in 2010 -2017 was higher than that in 2002 - 2010 according to the perspective of convergence speed and degree of convergence. (4) Technological progress had not fully played a role in suppressing energy consumption and improving the efficiency of embodied carbon efficiency, and it would also widen the gap between the embodied carbon emission efficiency levels of various product sectors. The expansion of trade scale could effectively improve carbon emission efficiency and narrow the gap between sectors. Environmental regulation could effectively promote the improvement of embodied carbon emission efficiency but would widen the level gap between sectors. These findings indicate that China needs to build a sound environmental regulation system for the development of low-carbon trade, continue to reasonably expand the scale of trade, eliminate backward industries with production capacity, vigorously develop low-carbon technologies such as new energy, strengthen the exchange of low-carbon technologies and industrial cooperation among sectors, and promote coordinated development among industries. [ABSTRACT FROM AUTHOR]

Copyright of Control Theory & Applications / Kongzhi Lilun Yu Yinyong is the property of Editorial Department of Control Theory & Applications and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Journal of Harbin Institute of Technology. Social Sciences Edition / Haerbin Gongye Daxue Xuebao. Shehui Kexue Ban is the property of Harbin Institute of Technology and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Systems Engineering & Electronics is the property of Journal of Systems Engineering & Electronics Editorial Department and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

In this paper, the analysis method of STPA is introduced to analyze the flight safety in approach and landing, and the occurrence of unsafe events in the approach and landing stage is regarded as the emergent characteristic of the system, and the safety problem is transformed into the control problem. This paper firstly introduces the background of the research, the shortcomings of the traditional security analysis methods and the application of the STPA method in other fields. Secondly, the basic principles of the STAMP model and the STPA analysis method are briefly introduced, which lays the foundation for the safety analysis of the approach flight. Thirdly, the STPA method is applied to the flight safety analysis in approach and landing, which defines the unsafe control action at this stage, analyzes the scene of the unsafe control behavior; taking the action that providing incorrect height, velocity and slip angle (UCA1) as example, we analyze the specific causal factors of this unsafe control action of pilots. Finally, based on the simplified kinematic calculation framework, the kinematics calculation and analysis is carried out. This paper makes a specific calculation of UCA1, and carries out the quantitative safety analysis based on STPA, which shows the effectiveness of STPA method in the safety analysis of approach and landing. [ABSTRACT FROM AUTHOR]

Copyright of Journal of Harbin Institute of Technology. Social Sciences Edition / Haerbin Gongye Daxue Xuebao. Shehui Kexue Ban is the property of Harbin Institute of Technology and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)