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| 1 | Galloping Vibration Monitoring of Overhead Transmission Lines by Chirped FBG Array显示文摘A distributed online fiber sensing system based on the phase-sensitive optical time domain reflectometer(Φ-OTDR)enhanced by the drawing tower fiber Bragg grating(FBG)array is presented and investigated experimentally for monitoring the galloping of overhead transmission lines.The chirped FBG array enhanced Φ-OTDR sensing system can be used to measure the galloping behavior of the overhead transmission lines(optical phase conductor or optical power ground wire),which are helpful for monitoring the frequency response characteristics of the ice-induced galloping,evaluating the motion tendencies of these cables,and avoiding the risk of flashover during galloping.The feasibility of the proposed online monitoring system is demonstrated through a series of experiments at the Special Optical Fiber Cable Laboratory of State Grid Corporation of China(Beijing,China).Results show that the proposed system is effective and reliable for the monitoring of galloping shape and characteristic frequency,which can predict the trend of destructive vibration behavior and avoid the occurrence of cable breaking and tower toppling accidents,and these features are essential for the safety operation in smart grids. | Qizhong YAN Ciming ZHOU Xuebin FENG Chi DENG Wenyu HU Yimin XU | 2022 | Photonic Sensors2022，12，3： | 5 |
| 2 | RSMC:A Safety Model Checker for Concurrency and Memory Safety of Rust显示文摘Rust is a system-level programming language that provides thread and memory safety guarantee through a suite of static compiler checking rules and prevents segmentation errors.However,since compiler checking is too strict to confine Rust's programmability,the developers prefer to use the keyword'unsafe'to bypass compiler checking,through which the caller could interact with OS directly.Unfortunately,the code block with'unsafe'would easily lead to some serious bugs such as memory safety violation,race condition and so on.In this paper,to verify memory and concurrency safety of Rust programs,we present RSMC(Safety Model Checker for Rust),a tool based on Smack to detect concurrency bugs and memory safety errors in Rust programs,in which we combine concurrency primitives model checking and memory boundary model checking.RSMC,with an assertion generator,can automatically insert assertions and requires no programmer annotations to verify Rust programs.We evaluate RSMC on two categories of Rust programs,and the result shows that RSMC can effectively find concurrency bugs and memory safety errors in vulnerable Rust programs,which include unsafe code. | YAN Fei WANG Qizhong ZHANG Liqiang CHEN Yasha | 2020 | Wuhan University Journal of Natural Sciences2020，25，2： | 1 |
| 3 | Impact of Anthropogenic Aerosols on Summer Precipitation in the Beijing–Tianjin–Hebei Urban Agglomeration in China:Regional Climate Modeling Using WRF-Chem显示文摘The WRF model with chemistry(WRF-Chem) was employed to simulate the impacts of anthropogenic aerosols on summer precipitation over the Beijing–Tianjin–Hebei urban agglomeration in China. With the aid of a high-resolution gridded inventory of anthropogenic emissions of trace gases and aerosols, we conducted relatively long-term regional simulations,considering direct, semi-direct and indirect effects of the aerosols. Comparing the results of sensitivity experiments with and without emissions, it was found that anthropogenic aerosols tended to enhance summer precipitation over the metropolitan areas. Domain-averaged rainfall was increased throughout the day, except for the time around noon. Aerosols shifted the precipitation probability distribution from light or moderate to extreme rain. Further analysis showed that the anthropogenic aerosol radiative forcing had a cooling effect at the land surface, but a warming effect in the atmosphere. However, enhanced convective strength and updrafts accompanied by water vapor increases and cyclone-like wind shear anomalies were found in the urban areas. These responses may originate from cloud microphysical effects of aerosols on convection, which were identified as the primary cause for the summer rainfall enhancement. | Jun WANG Jinming FENG Qizhong WU Zhongwei YAN | 2016 | Advances in Atmospheric Sciences2016，33，6： | 1 |
| 4 | [2]Pseudorotaxanes Based on Naphtho-21-crown-7 and Secondary Dialkylammonium Salts:Remarkably Improved Asso-ciation Constants Among Four Threaded Structures显示文摘This research article is focused on the recognition interaction of a new host naphtho-21-crown-7 and four sec-ondary dialkylammonium salts.In acetone,they can form 1∶1 host-guest complexes which belong to slow-exchange systems.We also found the differences of binding affinity and binding selectivity between the host and its complementary guest moieties,which could be ascribed to the aromaticπ-πstacking effect and the acidity increase of N-methylene and ammonium hydrogens due to the increasing electron withdrawing ability from butyl to methoxyphenyl to phenyl to p-cyanophenyl substituents in the recognition motif. | Qizhong Zhou Yan Luo Huajiang Jiang Yuyuan Ye Quan Zhang Guoliang Dai Rener Chen | 2014 | Chinese Journal of Chemistry2014，32，4： | 0 |
| 5 | Preparation and Performance of Corona-proof Conductive Composite Coatings显示文摘Because of its merits,acrylic resin was chosen to improve the mechanical,conductive and hydrophobic properties.Carbon fiber powders (CF),carbon nanotubes (MWCNT),and nano-TiO_(2) were incorporated into the acrylic resin to prepare the corona-proof conductive composite coatings.The incorporation of CF and MWCNT may improve the conductivity and mechanical strength of the coatings.However,the addition of nano-TiO_(2) may increase the hydrophobicity of the coatings.Thus,the effects of different additives on the mechanical properties,conductivity,hydrophobicity and heat resistance of the conductive film were studied.The experimental results show that the incorporation of carbon fiber powders and multi walled carbon nanotubes can significantly improve both the conductivity and mechanical properties of the conductive coatings,and the addition of nano titanium dioxide can improve the hydrophobicity of the conductive film. | 吴健 韩文 ZHAO Yalin YANG Bin JING Yan GENG Mingxin BAI Xiaochun TAN Haiying GE Qizhong LENG Pei 孙九霄 | 2021 | Journal of Wuhan University of Technology(Materials Science)2021，36，4： | 0 |
| 6 | Plotting the Sequential Rock Remote Sensing Information by Optimization Dichotomy Method显示文摘The sequential rock remote sensing information is a group of rocks that are correlative in space or in space and time. For the sake of plottiug them, someone had brought forward the optimization segn.entotion metkod. We have ased this method to plot the sequential rock remote sensing information at tbe remote sensing hyperspetral test field of Daqing mountain, Inner Mongolia Autonomous Region, China, and found some disadvantages of this method. Therefore, we put forward the optimization dichotomy to plot them, and get better results. Finally we make a conclusion. | Liu Qingsheng Lin Qizhong Wang Zhigang Yan Shouxun(Institute of Remote Sensing Application, Chinese Academy of Sciences, Beijing 100101) | 1999 | Journal of Earth Science1999，18，3： | 0 |
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