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How Dangerous!
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作者 魏子博 陈传光(指导) 《中学生英语》 2024年第2期7-7,共1页
This morning I came across something dangerous on my way to school,which nearly injured me or even made me lose my life.
关键词 SOMETHING INJURED dangerous
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Building Indoor Dangerous Behavior Recognition Based on LSTM-GCN with Attention Mechanism 被引量:1
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作者 Qingyue Zhao Qiaoyu Gu +2 位作者 Zhijun Gao Shipian Shao Xinyuan Zhang 《Computer Modeling in Engineering & Sciences》 SCIE EI 2023年第11期1773-1788,共16页
Building indoor dangerous behavior recognition is a specific application in the field of abnormal human recognition.A human dangerous behavior recognition method based on LSTM-GCN with attention mechanism(GLA)model wa... Building indoor dangerous behavior recognition is a specific application in the field of abnormal human recognition.A human dangerous behavior recognition method based on LSTM-GCN with attention mechanism(GLA)model was proposed aiming at the problem that the existing human skeleton-based action recognition methods cannot fully extract the temporal and spatial features.The network connects GCN and LSTMnetwork in series,and inputs the skeleton sequence extracted by GCN that contains spatial information into the LSTM layer for time sequence feature extraction,which fully excavates the temporal and spatial features of the skeleton sequence.Finally,an attention layer is designed to enhance the features of key bone points,and Softmax is used to classify and identify dangerous behaviors.The dangerous behavior datasets are derived from NTU-RGB+D and Kinetics data sets.Experimental results show that the proposed method can effectively identify some dangerous behaviors in the building,and its accuracy is higher than those of other similar methods. 展开更多
关键词 Human skeleton building indoor dangerous behaviors recognition graph convolution network long short term memory network attention mechanism
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Application of Dual-Energy X-Ray Image Detection of Dangerous Goods Based on YOLOv7
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作者 Baosheng Liu Fei Wang +1 位作者 Ming Gao Lei Zhao 《Journal of Computer and Communications》 2023年第7期208-225,共18页
X-ray security equipment is currently a more commonly used dangerous goods detection tool, due to the increasing security work tasks, the use of target detection technology to assist security personnel to carry out wo... X-ray security equipment is currently a more commonly used dangerous goods detection tool, due to the increasing security work tasks, the use of target detection technology to assist security personnel to carry out work has become an inevitable trend. With the development of deep learning, object detection technology is becoming more and more mature, and object detection framework based on convolutional neural networks has been widely used in industrial, medical and military fields. In order to improve the efficiency of security staff, reduce the risk of dangerous goods missed detection. Based on the data collected in X-ray security equipment, this paper uses a method of inserting dangerous goods into an empty package to balance all kinds of dangerous goods data and expand the data set. The high-low energy images are combined using the high-low energy feature fusion method. Finally, the dangerous goods target detection technology based on the YOLOv7 model is used for model training. After the introduction of the above method, the detection accuracy is improved by 6% compared with the direct use of the original data set for detection, and the speed is 93FPS, which can meet the requirements of the online security system, greatly improve the work efficiency of security personnel, and eliminate the security risks caused by missed detection. 展开更多
关键词 X-RAY dangerous Goods Detection High and Low Energy Image Fusion ACCURACY Real-Time Detection
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Recognition for Frontal Emergency Stops Dangerous Activity Using Nano IoT Sensor and Transfer Learning
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作者 Wei Sun Zhanhe Du 《Intelligent Automation & Soft Computing》 SCIE 2023年第7期1181-1195,共15页
Currently,it is difficult to extract the depth feature of the frontal emergency stops dangerous activity signal,which leads to a decline in the accuracy and efficiency of the frontal emergency stops the dangerous acti... Currently,it is difficult to extract the depth feature of the frontal emergency stops dangerous activity signal,which leads to a decline in the accuracy and efficiency of the frontal emergency stops the dangerous activ-ity.Therefore,a recognition for frontal emergency stops dangerous activity algorithm based on Nano Internet of Things Sensor(NIoTS)and transfer learning is proposed.First,the NIoTS is installed in the athlete’s leg muscles to collect activity signals.Second,the noise component in the activity signal is removed using the de-noising method based on mathematical morphology.Finally,the depth feature of the activity signal is extracted through the deep transfer learning model,and the Euclidean distance between the extracted feature and the depth feature of the frontal emergency stops dangerous activity signal is compared.If the European distance is small,it can be judged as the frontal emergency stops dangerous activity,and the frontal emergency stops dangerous activity recognition is realized.The results show that the average time delay of activity signal acquisition of the algorithm is low,the signal-to-noise ratio of the action signal is high,and the activity signal mean square error is low.The variance of the frontal emergency stops dangerous activity recognition does not exceed 0.5.The difference between the appearance time of the dangerous activity and the recognition time of the algorithm is 0.15 s,it can accurately and quickly recognize the frontal emergency stops the dangerous activity. 展开更多
关键词 Frontal emergency stops RECOGNITION nano internet of things sensor transfer learning dangerous activity distinguish
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无灵句在The Most Dangerous Game中的运用 被引量:1
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作者 谢林 何冬梅 《海外英语》 2012年第4X期210-211,213,共3页
该文通过对小说《最危险的游戏》中无灵句运用的分析,为理解和欣赏该故事提供一个新视觉。
关键词 无灵句 《最危险的游戏》 赏析
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Why is the Danger Cylinder Dangerous in the P3P Problem? 被引量:5
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作者 ZHANG Cai-Xia HU Zhan-Yi 《自动化学报》 EI CSCD 北大核心 2006年第4期504-511,共8页
The PnP problem is a widely used technique for pose determination in computer vision community,and finding out geometric conditions of multiple solutions is the ultimate and most desirable goal of the multi-solution a... The PnP problem is a widely used technique for pose determination in computer vision community,and finding out geometric conditions of multiple solutions is the ultimate and most desirable goal of the multi-solution analysis,which is also a key research issue of the problem.In this paper,we prove that given 3 control points,if the camera's optical center lies on the so-called“danger cylinder”and is enough far from the supporting plane of control points,the corresponding P3P problem must have 3 positive solutions.This result can bring some new insights into a better understanding of the multi-solution problem.For example,it is shown in the literature that the solution of the P3P problem is instable if the optical center lies on this danger cylinder,we think such occurrence of triple-solution is the primary source of this instability. 展开更多
关键词 The P3P problem the danger cylinder instability of solution
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Earthquake-induced collapse mechanism of two types of dangerous rock masses 被引量:3
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作者 Wang Wei Yuan Wei +1 位作者 Wang Qizhi Xue Kang 《Earthquake Engineering and Engineering Vibration》 SCIE EI CSCD 2016年第2期379-386,共8页
As the economy of China develops, an increasing number of key traffic projects have been undertaken in the west of China, where there are high, steep rock slopes. The collapse of dangerous rock masses, especially foll... As the economy of China develops, an increasing number of key traffic projects have been undertaken in the west of China, where there are high, steep rock slopes. The collapse of dangerous rock masses, especially following a strong earthquake, is one of common geological disasters known in rock slope engineering. Therefore, it is important to study the collapse mechanism of dangerous rock masses induced by an earthquake and the analysis approach of its stability. This study provides a simple and convenient method to determine the collapse mechanisms of two types of dangerous rock masses (i.e. cantilever and upright) associated with the definition and calculation of the safety factor, which is based on the flexure theory of a constant-section beam by combining with the maximum tensile-stress criterion to depict the process of crack propagation caused by seismic waves. The calculation results show that there are critical crack depths in each form of the dangerous rock masses. Once the accumulated depth of the crack growth during an earthquake exceeds the critical depth, the collapse will occur. It is also demonstrated that the crack extension amount of each step is not a constant value, and is closely associated with the current accumulated crack depth. The greater the cumulative crack depth, the more easily the crack propagates. Finally, the validity and applicability of the proposed method are verified through two actual engineering examples. 展开更多
关键词 dangerous rock mass earthquake-induced collapse cantilever beam theory safety factor high-steep rock slope
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Improved genetic algorithm freely searching for dangerous slip surface of slope 被引量:4
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作者 万文 曹平 +1 位作者 冯涛 袁海平 《Journal of Central South University of Technology》 EI 2005年第6期749-752,共4页
Based on the slice method of the non-circular slip surface for the calculation of integral stability of slope, an improved genetic algorithm was proposed, which can freely search for the most dangerous slip surface of... Based on the slice method of the non-circular slip surface for the calculation of integral stability of slope, an improved genetic algorithm was proposed, which can freely search for the most dangerous slip surface of slope and the corresponding minimum safety factor without supposing the geometric shape of the most dangerous slip surface. This improved genetic algorithm can simulate the genetic evolution process of organisms and avoid the local minimum value compared with the classical methods. The results of engineering cases show that it is a global optimal algorithm and has many advantages, such as higher efficiency and shorter time than the simple genetic algorithm. 展开更多
关键词 slice method dangerous non-circular slip surface minimum safety factor improved genetic algorithm
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Numerical Study on the Leakage and Diffusion Characteristics of Low-Solubility and Low-Volatile Dangerous Chemicals from Ship in Inland Rivers 被引量:3
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作者 Shuifen Zhan Mingchao Wang +4 位作者 Min Wang Qianqian Shao Zefang Zhang Wenxin Jiang Xuemin Chen 《Computer Modeling in Engineering & Sciences》 SCIE EI 2020年第4期217-235,共19页
Considering the accidents of ships for dangerous chemicals transportation in inland rivers,a numerical method for the simulation of the leakage and diffusion processes of dangerous chemicals in inland rivers is propos... Considering the accidents of ships for dangerous chemicals transportation in inland rivers,a numerical method for the simulation of the leakage and diffusion processes of dangerous chemicals in inland rivers is proposed in this paper.Geographic information,such as rivers and buildings in the model,is obtained through Google Earth and structures of rivers and buildings are described by Auto CAD.In addition,the Fluent is adopted to simulate the leakage and diffusion processes of the dangerous chemicals where the standard k-εmodel is used to calculate the turbulent flow.Considering the interaction between chemicals and water,the VOF method is used to describe the leakage,drift and diffusion process of dangerous chemicals groups on the water surface.Taking a section of the Yangtze River as an example,the leakage and diffusion processes from a ship carrying 3,000 tons of low-solubility and low-volatile dangerous chemicals are studied,and the characteristics of leakage and diffusion are analyzed in detail.During the simulation,the area of the maximum group of leaked dangerous chemicals reaches up to about 1800 m2,and the number reaches up to 45.Furthermore,the influence of density,viscosity,water velocity and leakage velocity on the leakage and diffusion processes is investigated in this paper. 展开更多
关键词 Inland rivers low-solubility and low-volatile dangerous chemicals leakage and diffusion VOF.
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Educational Program for Pregnant Women Regarding Obstetrics Dangerous Signs in Rural Areas 被引量:1
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作者 Mai Ahmed Gobran Marwa Tharwat Abdel Fatah +11 位作者 Mohamed S. H. Ramadan Ghada A. Amer M. Mahmoud Rabeh Rofida M. Elshafei Almandouh Hussein Bosilah Hala Hassan Saied Khalil Sharbat Thabet Hassanine Manal Mansour Mostafa Mohamed Sobhy Bakry Safaa A. Ibrahim Eman Ramadan Abd El Fattah Abeer M. Abdelbary 《Open Journal of Obstetrics and Gynecology》 2021年第5期529-552,共24页
<strong>Background</strong><span style="font-family:Verdana;"><span style="font-family:Verdana;"><span style="font-family:Verdana;"><strong>:</stron... <strong>Background</strong><span style="font-family:Verdana;"><span style="font-family:Verdana;"><span style="font-family:Verdana;"><strong>:</strong> Complications linked to postpartum & pregnancy are one of the major causes of female death. In order to understand the causes of complications and encourage women to take sufficient action in order to receive emergency treatment, a critical step should therefore be taken to minimize complications related to pregnancy, in order to ensure the safety of both women and newborns.</span></span></span><span><span><span style="font-family:""> </span></span></span><span style="font-family:Verdana;"><span style="font-family:Verdana;"><b><span style="font-family:Verdana;">Aim of the work</span></b></span></span><span style="font-family:Verdana;"><span style="font-family:Verdana;"><span style="font-family:Verdana;">:</span></span></span><span><span><span style="font-family:""> </span></span></span><span style="font-family:Verdana;"><span style="font-family:Verdana;"><span style="font-family:Verdana;">Evaluate the effectiveness of the education programs for pregnant women on obstetric danger signs in rural areas and help minimize the incidence of pregnancy loss and comorbidities.</span></span></span><span><span><span style="font-family:""> </span></span></span><span style="font-family:Verdana;"><span style="font-family:Verdana;"><b><span style="font-family:Verdana;">Methods</span></b></span></span><span style="font-family:Verdana;"><span style="font-family:Verdana;"><span style="font-family:Verdana;">: A quasi-experimental design on 70 women from a population of through 372 women in six-month in antenatal clinics recruited from the previously mentioned settings with pre- and post-test was conducted at antenatal clinics (M.C.H centers) affiliated to the available geographical health zones in EL-fayoum rural area including: Al-sheikh hassan at sanorse. We collected the data of women characteristics by a self-administered interview questionnaire & a structured reported knowledge and practices checklist to evaluate pregnant women practices and knowledge. Follow up was done to the studied groups & histopathology assessments of the product of conception in cases of abortion secondary to the complications to compare between effect of antenatal care program on the woman who followed the program and those who did not.</span></span></span><span><span><span style="font-family:""> </span></span></span><span style="font-family:Verdana;"><span style="font-family:Verdana;"><b><span style="font-family:Verdana;">Results</span></b></span></span><span style="font-family:Verdana;"><span style="font-family:Verdana;"><span style="font-family:Verdana;">: There is an improvement in 63% of pregnant women knowledge and practices after educational program in all aspects.</span></span></span><span><span><span style="font-family:""> </span></span></span><span style="font-family:Verdana;"><span style="font-family:Verdana;"><span style="font-family:Verdana;">The most common danger signs that may occur during pregnancy were miscarriage and vaginal bleeding, intrauterine fetal death as reported by women</span></span></span><span><span><span style="font-family:""> </span></span></span><span><span><span style="font-family:""><span style="font-family:Verdana;">& confirmed by the histopathology reports. </span><b><span style="font-family:Verdana;">Conclusion</span></b><span style="font-family:Verdana;">: The educational program had an efficient improving women knowledge and practice regarding danger signs for pregnant women in rural areas, with highly statically significant differences in all the tested items between pre/post program implementation (P</span></span></span></span><span><span><span style="font-family:""> </span></span></span><span style="font-family:Verdana;"><span style="font-family:Verdana;"><span style="font-family:Verdana;"><</span></span></span><span><span><span style="font-family:""> </span></span></span><span><span><span style="font-family:""><span style="font-family:Verdana;">0.001). </span><b><span style="font-family:Verdana;">Recommendations</span></b><span style="font-family:Verdana;">: Establishment of in-service training programs and continuous supervision in rural areas to a raise women knowledge and practice regarding educational pregnant women and developing antenatal classes for all pregnant women about obstetric danger signs.</span></span></span></span> 展开更多
关键词 Obstetric danger Signs KNOWLEDGE Practice Obstetric Complications
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Usage of global navigation systems for detection of dangerous meteorological phenomena 被引量:1
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作者 V F Kravchenko O V Kravchenko +2 位作者 V I Lutsenko I V Lutsenko D O Popov 《Journal of Measurement Science and Instrumentation》 CAS CSCD 2015年第1期68-74,共7页
The method of dangerous meteorological phenomenon detection using the data of coordinate measurement by receivers of global navigation satellite system (GLONASS) and global positioning system (GPS) is proposed. Th... The method of dangerous meteorological phenomenon detection using the data of coordinate measurement by receivers of global navigation satellite system (GLONASS) and global positioning system (GPS) is proposed. The possibility of thunderstorm courses and strong clouds detection on data of pseudo-distances and altitudes is shown theoretically and confirmed experimentally. 展开更多
关键词 dangerous meteorological phenomenon radio-raying global navigation system PSEUDO-RANGE ALTITUDE
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Lake inventory and potentially dangerous glacial lakes in the Nyang Qu Basin of China between 1970 and 2016 被引量:1
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作者 QI Miao-miao LIU Shi-yin +4 位作者 YAO Xiao-jun Richard Grünwald GAO Yong-peng DUAN Hong-yu LIU Juan 《Journal of Mountain Science》 SCIE CSCD 2020年第4期851-870,共20页
There are a large number of glaciers and lakes developed in the Nyang Qu Basin of China. Recent climate change has significant impacted on the high-mountain glacial environment. Rapid melting of glaciers contributes t... There are a large number of glaciers and lakes developed in the Nyang Qu Basin of China. Recent climate change has significant impacted on the high-mountain glacial environment. Rapid melting of glaciers contributes to the formation and expansion of moraine-dammed lakes which increase the probability of glacial lake outburst floods(GLOFs). We calculated a multi-temporal lake inventory based on(1) topographic maps in the 1970 s,(2) satellite imageries from 1990 to 2016,(3) First Chinese Glacier Inventory(FCGI),(4) Glacier Inventory of Southeastern Tibet(GIST) and(5) meteorological data. A total of 880 lakes(>0.01 km^2) have been mapped in 2016, with 318 being glacial lakes(GLs) and 462 non-glacier lakes(NGLs). Most of the lakes were mainly located at 4500 m a.s.l. and the lakes dominated by small lakes(<0.1 km^2) where the change of their actual sizes are more significant compared to the larger ones. Meanwhile, we found that there were 178 newly formed GLs and 51 of them had disappeared between 1970 and 2016. During the same period, there can be identified 157 newly formed GLs and 226 had disappeared. We additionally performed a hazard and risk assessment for GL in 2016 and exposed 14 potentially dangerous morainedammed lakes(PDMDLs), covering a total area of 5.88 km2 in the Nyang Qu Basin. There can be found 4 GLs with very high risk, 3 GLs with high risk, 4 GLs with medium risk and 4 GLs with low risk of GLOFs susceptibility. The findings of this study can be used for the future policy of risk management and also be adapted for promoting water resources management. 展开更多
关键词 LAKE INVENTORY Potentially dangerous moraine-dammed lakes(PDMDLs) Hazard assessment Tibetan Plateau Nyang QU BASIN
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Economic Implications of Avoiding Dangerous Climate Change: An Analysis Using the AIM/CGE [Global] Model 被引量:1
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作者 K. Matsumoto T. Masui 《Journal of Environmental Science and Engineering》 2010年第7期76-83,共8页
The purpose of this study is to analyze economic impacts of reducing greenhouse gases emissions significantly. A large amount of emissions reductions are required throughout this century to avoid dangerous climate cha... The purpose of this study is to analyze economic impacts of reducing greenhouse gases emissions significantly. A large amount of emissions reductions are required throughout this century to avoid dangerous climate change, and understanding the economic consequences under such situations is important and meaningful. The AIM/CGE [Global] model, a recursive dynamic computable general equilibrium model on a global scale, is applied to analyze carbon prices and changes in GDP when implementing five policy scenarios represented by emissions pathways, respectively. As a result of the analysis, higher carbon prices and larger decreases in GDP compared to the baseline emissions scenario are observed when emissions are reduced more deeply. However, such GDP losses are rather small and insignificant compared to the GDP growth observed throughout the century. These results suggest that although it is challenging to reduce emissions until the level to avoid dangerous climate change, there is a sufficient possibility to achieve it from economic perspectives. 展开更多
关键词 Economic impact carbon price GDP dangerous climate change emissions reduction global CGE model
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Study on dangerous collision area of ships out of control in Sutong Bridge area 被引量:1
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作者 Fang Jianhua Xu Yanmin +2 位作者 Liu Mingjun Zhang Jingcheng Li Bing 《Engineering Sciences》 EI 2009年第1期83-86,共4页
Motion state of ship out of control in bridge area was analyzed.Motion procedure after losing control was divided into two steps.One is drift step within stopping period.The other is drift step without inertia,which i... Motion state of ship out of control in bridge area was analyzed.Motion procedure after losing control was divided into two steps.One is drift step within stopping period.The other is drift step without inertia,which is induced by wind and current.Mathematical model for motion of ship out of control,considering wind-induced drift,current-induced drift,stopping ability,etc.,was established.Dangerous collision areas for main pier and auxiliary piers were analyzed according to different calculation conditions. 展开更多
关键词 Sutong Bridge ship out of control dangerous collision area drift induced by wind drift induced by cur- rent stopping ability
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Reinforcing a Dangerous Rock Mass Using the Flexible Network Method
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作者 Yang Wendong Xie Quanmin Xia Yuanyou Li Xinping 《Journal of China University of Geosciences》 SCIE CSCD 2005年第4期354-358,共5页
Because the main failure type of a dangerous rock mass is collapse, the treatment of such a mass should focus on controlling collapse failure. When treating dangerous rock masses, disturbing the mass (e. g. by blast... Because the main failure type of a dangerous rock mass is collapse, the treatment of such a mass should focus on controlling collapse failure. When treating dangerous rock masses, disturbing the mass (e. g. by blasting) needs to be avoided, as this new damage could cause collapse. So the self-bearing capacity of the mountain mass must be used to treat the dangerous rock mass. This article is based on a practical example of the control of a dangerous rock mass at Banyan Mountain, Huangshi, Hubei Province. On the basis of an analysis of damage mechanism and the stability of the dangerous rock mass, a flexible network reinforcement method was designed to prevent the collapse of the rock mass. The deformations of section Ⅱ w of the dangerous rock mass before and after the flexible network reinforcement were calculated using the two-dimensional finite element method. The results show that the maximum deformation reduced by 55 % after the application of the flexible network reinforcement, from 45.99 to 20.75 ram, which demonstrates that the flexible network method is effective, and can provide some scientific basis for the treatment of dangerous rock masses. 展开更多
关键词 dangerous rock mass flexible network reinforcement method finite element analysis.
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Identifying and Ranking Dangerous Road Segments a Case of Hawassa-Shashemene-Bulbula Two-Lane Two-Way Rural Highway, Ethiopia
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作者 Mandefro Terefe Abebe Moltot Zewdie Belayneh 《Journal of Transportation Technologies》 2018年第3期151-174,共24页
According to the study made by United Nation Economic Commission for Africa, Ethiopia stands as one of the worst countries with respect to road safety performance in terms of traffic accident fatalities per 10,000 veh... According to the study made by United Nation Economic Commission for Africa, Ethiopia stands as one of the worst countries with respect to road safety performance in terms of traffic accident fatalities per 10,000 vehicles (i.e. 95 in 2007/8). Road safety generally depends on humans, vehicles, and highway conditions. These factors influence road safety separately or in combination. One of the basic means to improve road safety is to reduce hazardous conditions of roads. The main objective of this study is to identify and rank hazardous locations and propose appropriate simple and inexpensive countermeasures along Hawassa-Shashemene-Bulbula main two-lane rural road. Accordingly, the road and traffic data were collected from field investigation and Ethiopian Road Authority and accident data were gathered from police stations. Then, the study road equally divided into short sections of 1.5 km and traffic volume and accident frequencies assigned for each road site to predict theoretical frequencies of accident. Empirical Bayes method and Safety Performance Function have been used to estimate an index known as Potential for Safety Improvement (PSI) for each site of the study area to identify and rank road sites. The result showed that out of 43 road segments 22 of them were identified as dangerous road segments. Moreover, based on further criterion established for screening the ranked road sections 8 road segments were found the most dangerous road segments as they have contributed 76% of total PSI values. The degree of haphazardness of a given road segment in the study area has directly associated with the availability of risk indicating road and traffic factors. Finally, it recommends that regulatory body of road safety in the study area should give high priority and immediate response for the improvement of most dangerous road segments. 展开更多
关键词 dangerous ROAD Segment Empirical Bayes Estimate SAFETY Performance Function Potential for SAFETY Improvement Countermeasures
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Method to Appraise Dangerous Class of Building Masonry Component Based on DC-YOLO Model
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作者 Hongrui Zhang Wenxue Wei +2 位作者 Xinguang Xiao Song Yang Wanlu Shao 《Computers, Materials & Continua》 SCIE EI 2020年第4期457-468,共12页
This DC-YOLO Model was designed in order to improve the efficiency for appraising dangerous class of buildings and avoid manual intervention,thereby making the appraisal results more objective.It is an automated metho... This DC-YOLO Model was designed in order to improve the efficiency for appraising dangerous class of buildings and avoid manual intervention,thereby making the appraisal results more objective.It is an automated method designed based on deep learning and target detection algorithms to appraise the dangerous class of building masonry component.Specifically,it(1)adopted K-means clustering to obtain the quantity and size of the prior boxes;(2)expanded the grid size to improve identification to small targets;(3)introduced in deformable convolution to adapt to the irregular shape of the masonry component cracks.The experimental results show that,comparing with the conventional method,the DC-YOLO model has better recognition rates for various targets to different extents,and achieves good effects in precision,recall rate and F1 value,which indicates the good performance in classifying dangerous classes of building masonry component. 展开更多
关键词 Deep learning masonry component appraisal of dangerous class deformable convolution
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Safety at Work of Participants in the Railway Transport of Dangerous Goods
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作者 Jasmin Hodzic Safet Kalac Denis Lukac 《Chinese Business Review》 2018年第8期404-410,共7页
The transport of dangerous goods always represents a potential risk to life,human health,property,and environmental protection.For this reason and in order to preserve the lives and health of the participants in the t... The transport of dangerous goods always represents a potential risk to life,human health,property,and environmental protection.For this reason and in order to preserve the lives and health of the participants in the transport process,adequate protection measures must be taken before,during,and after the transport of dangerous goods.Since the railway itself is a recipient of dangerous goods that are essential for its own operation,and is also a carrier of large quantities of various dangerous goods,these measures are of paramount importance.This paper examines,from a point of view of the protection of lives and health of the participants in the transport process and the safe transport of dangerous goods,the conditions of shipment and transport of dangerous goods,the obligations of the participants,and the essential ways for their proper handling.Proper application of safety at work prevents impromptu and indolent attitude in transporting dangerous goods,thus contributing to protection of people lives and health.Finally,this paper includes preventive measures and basic principles for implementation of safety at work in the transport of dangerous goods. 展开更多
关键词 dangerous GOODS RAILWAY transport HEALTH and SAFETY PARTICIPANTS
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美利坚语林漫游(七)——“Dangerous English”
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作者 朱曼华 《解放军外国语学院学报》 CSSCI 1989年第1期54-56,共3页
美国人常用“Dangerous English!”这个字样提醒来自异国它乡的朋友,要注意美国英语中所避讳的词语.在好多情况下这些词语是登不了大雅之堂的,其中有的甚至连工具书也避讳不收.因此,这些词语成了没上户口的“黑人”或没有记载的“黑话”... 美国人常用“Dangerous English!”这个字样提醒来自异国它乡的朋友,要注意美国英语中所避讳的词语.在好多情况下这些词语是登不了大雅之堂的,其中有的甚至连工具书也避讳不收.因此,这些词语成了没上户口的“黑人”或没有记载的“黑话”,只是在百姓中流传,人人都可以意会,不需要解释.然而,象我们这类乍到美国的异邦人就不同了,除非有朋友指点,是无法无师自通地知道他们避讳什么的. 展开更多
关键词 Room 女厕所 词语 美国英语 美国人 异邦人 朋友 语言 黑话 danger
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THE CAPTURE RANGES AND THE DANGEROUS RANGES FOR THE THREE-DIMENSIONAL TWO-AIRCRAFT COMBAT PROBLEM
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作者 Tong Minan and Wang LixinNorthwestern Polytechnical University 《Chinese Journal of Aeronautics》 SCIE EI CAS CSCD 1990年第2期88-97,共10页
In this paper, we use differential game theory to study the three-dimensional two-aircraft air-to-air combat problem. We give the ways to determine the Capture Ranges (CR) and the Dangerous Ranges (DR) for these two a... In this paper, we use differential game theory to study the three-dimensional two-aircraft air-to-air combat problem. We give the ways to determine the Capture Ranges (CR) and the Dangerous Ranges (DR) for these two aircraft according to the target entry directions, barrier and isochronic lines respectively. The simulations are given by referring to two sets of real aircraft parameters. After discussing the simulation results, we have obtained some conclusions that match the real air-to-air combat situation quite well. 展开更多
关键词 CR DR THE CAPTURE RANGES AND THE dangerous RANGES FOR THE THREE-DIMENSIONAL TWO-AIRCRAFT COMBAT PROBLEM
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