必威(betway·官方网站)西汉姆联-EURO CUP

Online System

Reviewer Login

Editor Login

Author Login

Download

Statement of Competing Interests

Authors Contribution Form

Online Journal

Advanced search

Special subject

Current Issue

Previous Issue

Introduction

Bimonthly, started in 1957
Administrator
Shanxi Provincial Education Department
Sponsor
Taiyuan University of Technology
Publisher
Ed. Office of Journal of TYUT
Editor-in-Chief
SUN Hongbin
ISSN: 1007-9432
CN: 14-1220/N

Links

Shanxi Provincial Education Department

Taiyuan University of Technology

location： home> 2022,53(02)

Research Progress in Carbon Dots-based Electroluminescent Light-emitting Diodes

This review summarizes the research progress in carbon dots (CDs)-based electroluminescent light-emitting diodes (LEDs). First, the synthesis method of CDs and the working principle of CDs-based electroluminescent LEDs are introduced. Second, electroluminescent LEDs with pure CDs and doped CDs in host as emission layer, and pure CDs as charge transport layer are disscused in detail, and the key factors affecting the performance of CDs-based electroluminescent LEDs are mainly analyzed, including t...

Taiyuan University of technology 2022,53(02): ZHENG Jingxia, MIAO Yanqin. ;

PDFviewed：abstract

Relationship Between Metal Vapor in Arc and Droplet Transfer Mode in GMAW

The relationship between metal vapor in arc and droplet transfer mode in GMAW was reviewed.The results show that when welding with high current and corresponding welding parameters and different shielding gases, the conductivity of the vapor in arc plasma center is different, resulting in different positions of current path, and finally leading to different (streaming, projected, and droplet) droplet transfer modes.The metal vapor reduces the electrical conductivity at the center of arc plasma, e...

Taiyuan University of technology 2022,53(02): SUN Xian. ;

PDFviewed：abstract

Carbon Materials Based on Sulfur-containing Petroleum Coke and Their Application as Anode Materials for Bunsen Reaction Products

Four kinds of petroleum coke with different sulfur content were used as raw materials to prepare sulfur and nitrogen co-doped carbon materials by potassium hydroxide activation. The microstructure, graphitization degree, pore size structure, and surface element state of the prepared materials were characterized and analyzed. Four carbon-based materials prepared by petroleum cokes with different sulfur content were applied as HI (1 mol/L) +H2SO4 (0.5 mol/L) solution electrolytic anode materials. T...

Taiyuan University of technology 2022,53(02): WANG Jiawei, BAO Weiren, CHANG Liping, WANG Hui, ZHANG Ke, LI Xiaoling. ;

PDFviewed：abstract

Study on the Synthesis of 2-butyl-1,2-octanediol

2-Butyl-1-octene was used as the raw material for synthesis of 2-butyl-1,2-octanediol by hydroxylation catalyzed by HCOOH and H2O2, and the effect of experimental conditions on the selectivity of each product was investigated. It is showed that the synthesized 2-butyl-1,2-octanediol and 2-butyl-1-octanol had the same branched structure, having the potential replacing 2-butyl-1-octanol to synthesize various branched compounds. The structure of products was characterized by FTIR and GCMS. It was de...

Taiyuan University of technology 2022,53(02): BAO Lining, LI Xu, DONG Jinxiang. ;

PDFviewed：abstract

Wind Tunnel Study on Migration Characteristics of the Aerosols Released from Point-source in Roughness Sub-layer

The transportation was simulated of aerosol particles released from point-source over the typical hilly terrain in a wind tunnel. The Particle Dynamic Analysis technique (PDA) was used to investigate the effects of wind speed (1 m/s, 2 m/s), particle size (0.1~2, 2~4, 4~6 μm), and terrain conditions (different height of peaks) on the migration behavior of particles in the range of roughness sub-layers. It was found that the longitudinal velocity and vertical velocity probability distribution of ...

Taiyuan University of technology 2022,53(02): GAO Zan, GAO Shan, ZHANG Junfang, GAO Ying, LI Yunpeng, YAO Rentai. ;

PDFviewed：abstract

A Framework for Extraction of Attribute Words of Commodity Reviews Based on Truncated History-attention

It is difficult for traditional attribute word extraction model to extract implicit attribute words effectively, resulting in incomplete attribute word extraction. To solve this problem, in this paper a product review attribute word extraction framework THA-BiLSTM-CRF based on truncated historical attention mechanism was proposed. First, the CBOW model is used to preprocess the text to obtain the word vector containing semantic information. Second, text features are extracted through the BiLSTM m...

Taiyuan University of technology 2022,53(02): ZHANG Shunxiang, ZHAO Tong, ZHU Guangli, ZHANG Zhenjiang, SUN Zhengyan. ;

PDFviewed：abstract

Route Recommendation Method Based on Frequent Trajectory Sequence Pattern Mining

Travel route recommendation is one of the important research contents in the field of intelligent transportation. Traditional route recommendation methods often recommend routes on the basis of a single factor such as the shortest route or the shortest travel time, while ignoring the influence of urban crowd travel patterns on the route recommendation process. For the problems, in this paper a route recommendation method based on frequent trajectory sequence patterns was proposed. In the data pre...

Taiyuan University of technology 2022,53(02): DUAN Zongtao, REN Guoliang, KANG Jun, HUANG Shan, DU Jinguang, WANG Qianqian. ;

PDFviewed：abstract

Aspect-based Sentiment Classification with Reinforced Dependency Graph

We proposed Reinforced Dependency Graph for Aspect-based Sentiment Classification (RDGSC), a reinforced dependency graph model for aspect-based sentiment classification. In this framework, we train a policy network using deep reinforcement learning and construct a reinforced dependency graph for aspect-based sentiment classification. The graph attention network is used to fuse the aspect-related information in the text over the reinforced dependency graph. Each contextual representation is given ...

Taiyuan University of technology 2022,53(02): SONG Hongyang, ZHU Xiaofei, GUO Jiafeng. ;

PDFviewed：abstract

Closed High Utility Pattern Mining over Data Stream Based on Projection in the Window

A fast and effective algorithm EFIM_Closed_DS was proposed to mine closed and high utility itemsets in the data stream environment. The algorithm is based on the projection technology in the window, and the database projection technology and transaction merging method are used in each window to effectively reduce the cost of database scanning. Using efficient pruning techniques and effective closed itemset detection methods can prune a large number of low-utility itemsets and non-closed itemsets....

Taiyuan University of technology 2022,53(02): LI Muhang, HAN Meng, CHEN Zhiqiang, WU Hongxin, ZHANG Xilong. ;

PDFviewed：abstract

Low-dose CT Image Reconstruction Based on Dual-domain Multi-stage Combined Denoising

Aiming at the exposure to radiation dosage in CT imaging possessing cancer-inducing potential, and the use of a single data resulting in the residual noise and excessive smoothness of the structure in reconstruction results, a multi-stage joint denoising model for low-dose CT images based on two different data domains is proposed. In the first stage of the generator, the residual U-net model was used to recover the low-dose projection data. and the multi-scale information was added to the up-samp...

Taiyuan University of technology 2022,53(02): WANG Yanfei, QIANG Yan, WANG Mengnan, ZHANG Zhenqing. ;

PDFviewed：abstract

Dynamic Phasor Estimation Method Considering False Data Attack Detection

In this paper proposed was a dynamic phasor estimation method considering false data attack. First, an electrical signal model for dynamic conditions is established by Taylor series expansion of electrical signals with harmonic and noise conditions. Then, the phasor is detected, tracked, and estimated by using double suboptimal-scaling factor adaptive strong tracking Kalman filter (DSTKF) and false data attack detection method based on Euclidean distance. Finally, the proposed estimation method i...

Taiyuan University of technology 2022,53(02): ZHAO Dakai, ZHAO Qingsheng, LIANG Dingkang, WANG Xuping. ;

PDFviewed：abstract

Evaluation of the Green Transformation and Development of Closed Mines in Shanxi Province

The green transformation and development index system was established, and a hierarchical model based on AHP was constructed. Suggestions were given to Baijiazhuang Mine and Guanyao Anyuan Mine for their transformation evaluation and decision-making. This work can provide theoretical basis and engineering references for the green transformation and development of closed mines under similar conditions....

Taiyuan University of technology 2022,53(02): ZHANG Baisheng, YANG Yongkang, SUN Jie. ;

PDFviewed：abstract

Reliability of Focal Mechanism Solutions for Small and Medium Earthquakes Based on Different Methods—Taking Three Events in Shanxi Seismic Belt as Examples

Three representative small and medium earthquakes in Shanxi seismic belt in recent years were taken as examples. By using different methods, such as the first motion of P-wave, first motion of P-wave combining P/SV/SH amplitude ratio, CAP (Cut and Past), and moment tensor inversion, the reliability and stability of focal mechanism solutions of small and medium earthquakes were analyzed and verified by gradually increasing calculation stations and selecting different data types and data quantities...

Taiyuan University of technology 2022,53(02): GUAN Penghu, LI Bin, LI Zihong, SONG Meiqin, LIANG Xiangjun. ;

PDFviewed：abstract

Geomorphologic Characteristics of Small Watersheds in Different Formations from the Foot of the Lyuliang Mountains

In order to illustrate geomorphic characteristics in different sorts of formations, 10 small watersheds from Ar-Pt, C-O, C-P, T, and Q formations in the foot of Lyuliang Mountains were selected as the research objectives and the relationship between the area of these watersheds and its vertical gradient, as well as the geomorphic parameters including the width of the rivers, branch ratio, and curvature, were obtained by using ArcGIS software. We got such conclusions: (1) In 20 km2 research area, ...

Taiyuan University of technology 2022,53(02): YUE Keshan, ZHAO Jingui, WANG Jianmin. ;

PDFviewed：abstract

Experimental Study on Constant Amplitude Fatigue Performance of M20 High-strength Bolts for Fabricated Steel Structures under Owe-pretension Force

MTS servo hydraulic fatigue testing machine was used to conduct 3 sets of static tensile tests and 10 sets of constant amplitude fatigue tests with under-pretension on the commonly used ML20MnTiB, 10.9, and M20 high-strength bolts in engineering. The constant amplitude fatigue failure curves were dram. The fatigue life calculation method was established, and the fatigue fracture macroscopic and microscopic analysis was carried out through the Phenom ProX scanning electron microscopy, which shows ...

Taiyuan University of technology 2022,53(02): SHEN Yu, LEI Honggang, FENG Xuze. ;

PDFviewed：abstract

Research and Application of Shear Resistance of Stainless Steel Bolted Connection in Aluminum Alloy Reticulated Shell

Aiming at the gusset joints of the proposed aluminum alloy reticulated shell structure connected by stainless steel bolts, 90 finite element models of shear specimens of aluminum-aluminum and steel-aluminum were analyzed. Their weak parts and the effects of 9 kinds of pretension force P and 5 kinds of slip coefficient μ on the shear resistance property of stainless steel bolted connection were obtained. According to the force transfer characteristics and interfering factors of shear specimens an...

Taiyuan University of technology 2022,53(02): CAO Shaocheng, YAN Yajie, WU Qiyu, WANG Shigui, YAN Yueqin. ;

PDFviewed：abstract

Mechanical Property Degradation after Corrosion of M24 High Strength Bolts

In order to study the mechanical property degradation after corrosion, corrosion and mechanical tests were conducted on the M24 high strength bolts, which were treated with and without oil immersion. On the basis of neutral salt spray corrosion test, macro morphology of bolt corrosion products with different corrosion time was observed. It was found that the thickness of rust layer and the surface roughness of bolt increase with corrosion time. The corrosion of oil-free bolt was more serious than...

Taiyuan University of technology 2022,53(02): CHEN Qingwei, XIE Dan, YANG Chenqing, GUO Qi, WANG Zhipeng, MA Hui, WU Zeyan. ;

PDFviewed：abstract

Vibration Mechanism Analysis and Structure Improvement of Engine Thin-walled Tail Nozzle

To solve the problem of local high frequency vibration during test and operation for thin-walled tail nozzles of aero-engine, on the basis of mechanical vibration theory and finite element method, the vibration characteristics of the thin-walled tail nozzle were analyzed by the three-dimensional finite element simulation method, the low-order natural frequency, vibration mode, and relative vibration stress were obtained. On the basis of the working speed and related exciting factors, through the ...

Taiyuan University of technology 2022,53(02): ZHENG Xiaoxia, LI Zhiqiang, LI Wenhui, Wang Genwei. ;

PDFviewed：abstract

Study on Evaluation Method of Body Injury in Emergency Landing of Aircraft

Body injury criterion is the basis of aircraft seat and restraint system design. On the base of statistics on 559 autopsies involved in fatal general aircraft accidents in Federal Aviation Administration’s autopsy database, an analysis was performed to confirm the frequency and fatal risk in these aircraft accidents. Concerning different tolerance against impact of various body regions, the General Injury Criterion (GIC) was proposed to address the application in aviation, trying to provide an e...

Taiyuan University of technology 2022,53(02): WANG Jiu, LIN Rong, CHEN Xiaofeng, KUANG Gang, YAO Xiaohu, LI Zhiqiang. ;

PDFviewed：abstract