期刊文献+
共找到262篇文章
< 1 2 14 >
每页显示 20 50 100
The First Reported Case of Co-Infection with Neisseria Meningitidis and Bordetella Pertussis in the Cerebrospinal Fluid Specimen of a Normal Four-Year-Old Child
1
作者 XIA Xian LI Guo Ming +7 位作者 TANG Yi WANG Si Quan HE Fei JIANG Yong Zhong YANG Hong Mei JIANG Hong Lin LYU Jing MAO Ling Feng 《Biomedical and Environmental Sciences》 SCIE CAS CSCD 2024年第4期432-435,共4页
Pertussis is an acute and highly contagious respiratory disease caused by Bordetella pertussis(B.pertussis),which occurs in people of all ages and is most dangerous for young children,especially infants.The introducti... Pertussis is an acute and highly contagious respiratory disease caused by Bordetella pertussis(B.pertussis),which occurs in people of all ages and is most dangerous for young children,especially infants.The introduction of whole-cell pertussis vaccines(wPVs)in the 1950s dramatically reduced the incidence of pertussis worldwide[1].However,over the past two decades,many studies have reported the resurgence of pertussis in different countries[2].Epidemiological surveillance in Hubei Province over the last 3 years revealed a clear increasing trend in the incidence of pertussis during the coronavirus disease 2019(COVID-19)epidemic. 展开更多
关键词 PERTUSSIS DANGEROUS HUBEI
下载PDF
Quantifying the Impact of In-Cab Alerts on Truck Speed Reductions in Ohio
2
作者 Jairaj Desai Jijo K. Mathew Darcy M. Bullock 《Journal of Transportation Technologies》 2024年第3期273-288,共16页
In-cab alerts warn commercial vehicle drivers of upcoming roadway incidents, slowdowns and work zone construction activities. This paper reports on a study evaluating the driver response to in-cab alerts in Ohio. Driv... In-cab alerts warn commercial vehicle drivers of upcoming roadway incidents, slowdowns and work zone construction activities. This paper reports on a study evaluating the driver response to in-cab alerts in Ohio. Driver response was evaluated by measuring the statistical trends of vehicle speeds after the in-cab alerts were received. Vehicle speeds pre and post in-cab alert were collected over a 47 day period in the fall of 2023 for trucks traveling on interstate roadways in Ohio. Results show that approximately 22% of drivers receiving Dangerous Slowdown alerts had reduced their speeds by at least 5 mph 30 seconds after receiving such an alert. Segmenting this analysis by speed found that of vehicles traveling at or above 70 mph at the time of alerting, 26% reduced speeds by at least 5 mph. These speed reductions suggest drivers taking actional measures after receiving alerts. Future studies will involve further analysis on the impact of the types of alerts shown, roadway characteristics and overall traffic conditions on truck speeds passing through work zones. 展开更多
关键词 In-Cab Alerts Connected Truck Data Driver Alerts Dangerous Slowdowns
下载PDF
How Dangerous!
3
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
下载PDF
School Rules
4
作者 肖丽芸 刘婷(指导) 《中学生英语》 2024年第5期7-7,共1页
Every school has its rules.In our school,there are many rules,too.For example,we must go to school on time.We mustn't run in the hallways.We mustn't eat in the classroom but we can eat in the canteen.We mustn&... Every school has its rules.In our school,there are many rules,too.For example,we must go to school on time.We mustn't run in the hallways.We mustn't eat in the classroom but we can eat in the canteen.We mustn't take cell phones and dangerous goods to school.We have to wear the school uniforms when we are at school. 展开更多
关键词 TOO DANGEROUS CLASSROOM
下载PDF
Building Indoor Dangerous Behavior Recognition Based on LSTM-GCN with Attention Mechanism 被引量:1
5
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
下载PDF
Recognition for Frontal Emergency Stops Dangerous Activity Using Nano IoT Sensor and Transfer Learning
6
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
下载PDF
Deep Facial Emotion Recognition Using Local Features Based on Facial Landmarks for Security System
7
作者 Youngeun An Jimin Lee +1 位作者 Eunsang Bak Sungbum Pan 《Computers, Materials & Continua》 SCIE EI 2023年第8期1817-1832,共16页
Emotion recognition based on facial expressions is one of the most critical elements of human-machine interfaces.Most conventional methods for emotion recognition using facial expressions use the entire facial image t... Emotion recognition based on facial expressions is one of the most critical elements of human-machine interfaces.Most conventional methods for emotion recognition using facial expressions use the entire facial image to extract features and then recognize specific emotions through a pre-trained model.In contrast,this paper proposes a novel feature vector extraction method using the Euclidean distance between the landmarks changing their positions according to facial expressions,especially around the eyes,eyebrows,nose,andmouth.Then,we apply a newclassifier using an ensemble network to increase emotion recognition accuracy.The emotion recognition performance was compared with the conventional algorithms using public databases.The results indicated that the proposed method achieved higher accuracy than the traditional based on facial expressions for emotion recognition.In particular,our experiments with the FER2013 database show that our proposed method is robust to lighting conditions and backgrounds,with an average of 25% higher performance than previous studies.Consequently,the proposed method is expected to recognize facial expressions,especially fear and anger,to help prevent severe accidents by detecting security-related or dangerous actions in advance. 展开更多
关键词 Facial emotion recognition landmark-based feature extraction ensemble network robustness to the changes in illumination and background dangerous situation detection accident prevention
下载PDF
Examination of the Appropriateness of Teaching Materials for Preventing Dangers during Ablution and Bathing of Infants by Mothers and Family Members
8
作者 Sachi Chikazawa Ayako Sasaki 《Health》 CAS 2023年第2期186-214,共29页
Purpose: This study aimed to develop teaching materials to prevent the dangers of ablution and bathing infants, based on the dangerous experiences of mothers and family members, and examine their appropriateness. Meth... Purpose: This study aimed to develop teaching materials to prevent the dangers of ablution and bathing infants, based on the dangerous experiences of mothers and family members, and examine their appropriateness. Methods: A total of 20 midwives and public health nurses were selected as participants. Teaching materials and anonymous self-administered questionnaires were distributed, and the participants were asked to view the teaching materials and fill in the questionnaires. Retrieval was done by mail. The teaching materials included digital content, such as videos, sounds, and characters, which incorporated dangerous situations, preventions, and innovations in ablution and bathing procedures. The analysis was conducted by simple tabulation for each survey item. The free description was coded to preserve anonymity. This study was conducted with the approval of the Research Ethics Review Board of the authors’ affiliated university. Results: The teaching materials were found to be appropriate in terms of suitability to purpose, degree of difficulty of content, ease of viewing the videos, validity of time, appropriateness of expression, and usability. Conclusions: Ablution teaching materials that are used at the present time do not focus on dangers, and to date, no resources on bathing have been used as teaching materials. The created teaching materials in this study can be viewed multiple times, and mothers and family members who are unfamiliar with ablution and bathing can acquire knowledge regarding dangers and danger prevention. The addition of specific preventive measures and countermeasures for the occurrence of danger, along with practice, would result in the development of further appropriate teaching materials to reduce danger and alleviate anxiety. 展开更多
关键词 Ablution BATHING DANGER Teaching Material APPROPRIATENESS
下载PDF
Study on Flow Field Simulation at Transmission Towers in Loess Hilly Regions Based on Circular Boundary Constraints
9
作者 Yongxin Liu Huaiwei Cao +4 位作者 Puyu Zhao Gang Yang Hua Yu Fuwei He Bo He 《Energy Engineering》 EI 2023年第10期2417-2431,共15页
When using high-voltage transmission lines for energy transmission in loess hilly regions,local extreme wind fields such as turbulence and high-speed cyclones occur from time to time,which can cause many kinds of mech... When using high-voltage transmission lines for energy transmission in loess hilly regions,local extreme wind fields such as turbulence and high-speed cyclones occur from time to time,which can cause many kinds of mechanical and electrical failures,seriously affecting the reliable and stable energy transmission of the power grid.The existing research focuses on the wind field simulation of ideal micro-terrain and actual terrain with mostly single microterrain characteristics.Model boundary constraints and the influence of constrained boundaries are the main problems that need to be solved to accurately model and simulate complex flow fields.In this paper,a flow field simulation method based on circular boundary constraints is carried out.During the study,the influence of the model boundary and the selection conditions of themodeling range are systematically analyzed.It is more suitable to make sure that the air domain is 4 times higher than the height of the hill undulations,in addition to ensuring that there should be a minimum of 400 m between the study region and the boundary.Then,an actual terrain model of a power grid line in Shanxi is established,through the method proposed in this paper,the wind speed at the location of the transmission tower line under different wind directions is analyzed,and it is found that when the incidence direction is 45 degrees north by east the wind speed is the highest.The findings demonstrate that the circular boundary model has the advantage of more easily adjusting the wind incidence direction,in addition to theoretically reducing the errors caused by traditional models in boundary processing.It can accurately obtain the distribution characteristics of the flow field affected by the terrain,and quickly screen out the extreme working conditions that are most harmful to the transmission lines in the actual transmission line for energy transmission in complex loess hilly regions. 展开更多
关键词 TRIANGULATION finite element analysis most dangerous angle
下载PDF
Clinical Study on the Combination of Dingjing Pills and Risperidone in the Treatment of Patients with Schizophrenia Accompanied by Risky Behaviors
10
作者 Taotao XU Bin SHI 《Medicinal Plant》 CAS 2023年第5期89-91,共3页
[Objectives]To observe the clinical efficacy of Dingjing Pills on patients with schizophrenia accompanied by risky behaviors.[Methods]Two hundred patients diagnosed with schizophrenia and risky behaviors were divided ... [Objectives]To observe the clinical efficacy of Dingjing Pills on patients with schizophrenia accompanied by risky behaviors.[Methods]Two hundred patients diagnosed with schizophrenia and risky behaviors were divided into two groups based on the random and double-blinded principle:the treatment group(100 cases)treated with Dingjing Pills combined with risperidone,and the control group(100 cases)treated with risperidone alone.The observation course was 6 weeks.The clinical efficacy was compared using brief psychiatric rating scale(BPRS),modified overt aggression scale(revised edition)(MAOS),treatment emergent symptom scale(TESS),and blood routine,liver function,kidney function,and electrocardiogram examinations were conducted.[Results]After treatment,Dingjing Pills significantly reduced the scores of brief psychiatric rating scale,modified overt aggression scale and treatment emergent symptom scale in patients with schizophrenia and dangerous behaviors,and had no significant toxic or side effects.The total effective rate in the treatment group was 88.8%,while the total effective rate in the control group was 77.1%.There was a significant difference in therapeutic efficacy between the two groups(P<0.05).[Conclusions]Dingjing Pills has an intervention and therapeutic effect on high-risk behaviors of schizophrenia,with minimal side effects and easy acceptance by patients. 展开更多
关键词 Dingjing Pill SCHIZOPHRENIA Dangerous behavior Clinical efficacy
下载PDF
Application of"Six Thinking Hats"in the Investigation and Improvement of Hidden Dangers in Food Safety
11
作者 Peng WAN Zhen ZHAO +3 位作者 Guoyan WEN Yunshuang FU Cuizhi LI Zhiyong LU 《Asian Agricultural Research》 2023年第10期20-22,共3页
With the development of economy,people's living standards are constantly improving,and the requirements for food safety are getting higher and higher.The Food Safety Law stipulates that enterprises should implemen... With the development of economy,people's living standards are constantly improving,and the requirements for food safety are getting higher and higher.The Food Safety Law stipulates that enterprises should implement the main responsibility of food safety,and the investigation and improvement of food safety hazards plays an important role in improving the food safety management level of enterprises and reducing food safety risks.This paper combines the innovative thinking mode of six thinking hats with food safety,discusses the application mode of six thinking hats in food safety investigation and improvement,and hopes to improve food safety level through this way. 展开更多
关键词 Six thinking hats Food safety Hidden danger investigation and improvement
下载PDF
Application of Dual-Energy X-Ray Image Detection of Dangerous Goods Based on YOLOv7
12
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
下载PDF
Preliminary Study on Forest Fire Prevention and Extinguishing in Townships in the Southern Mountainous Areas of Zhejiang Province:A Case Study of Lishui
13
作者 Dalin WANG Ming LUO +2 位作者 Xiaobing YANG Siwei ZHENG Jian DENG 《Meteorological and Environmental Research》 2023年第6期53-57,共5页
Forest fires seriously threaten forestry resources and the life and property safety of people in mountainous areas of Lishui City. In this paper, a fire prevention concept with refined forecast and early warning of fo... Forest fires seriously threaten forestry resources and the life and property safety of people in mountainous areas of Lishui City. In this paper, a fire prevention concept with refined forecast and early warning of forest fire danger weather ratings in townships as the starting point, satellite real-time observation of fire spots, monitoring of the Internet of Things and other high-tech products as an implementation means, and strengthening forest fire prevention equipment and personnel in townships as a guarantee was established. The command system for rapid emergency response by cities, counties and townships should be improved. During the forest fire prevention period, fire sources should be strictly controlled, and the basic principles of forest fire fighting in townships should be implemented into the actual fire prevention and fire fighting work to eliminate forest fires in time at the initial stage and before the disaster. 展开更多
关键词 Mountainous areas of southern Zhejiang Townships Forest fire danger
下载PDF
如何在洪水中保护自己
14
作者 李奕群 《疯狂英语(新悦读)》 2023年第10期27-30,76,77,共6页
Being caught in a flood is incredibly dangerous.Like many other natural disasters,floods can occur with little or no warning.Flash floods move quickly and have strong currents.
关键词 floods FLOOD DANGEROUS
下载PDF
U.S.opens new high-security livestock laboratory
15
作者 Warren Cornwall 《四川生理科学杂志》 2023年第6期1084-1084,共1页
Unease greets Kansas facility that will work with dangerous agricultural pathogens.
关键词 DANGEROUS AGRICULTURAL FACILITY
下载PDF
The Possibilities of Using the Minimax Method to Diagnose the State of the Atmosphere
16
作者 Elena S.Andreeva 《Journal of Atmospheric Science Research》 2023年第2期42-49,共8页
The article is devoted to the discussion of the possibilities of approbation of one of the probabilistic methods of verification of evaluation works-the minimax method or the method of establishing the minimum risk of... The article is devoted to the discussion of the possibilities of approbation of one of the probabilistic methods of verification of evaluation works-the minimax method or the method of establishing the minimum risk of making erroneous diagnoses of the instability of the planetary boundary layer of air.Within the framework of this study,the task of probabilistic forecasting of diagnostic parameters and their combinations,leading in their totality to the formation of an unstable state of the planetary boundary layer of the atmosphere,was carried out.It is this state that,as shown by previous studies,a priori contribution to the development of a number of weather phenomena dangerous for society(squalls,hail,heavy rains,etc.).The results of applying the minimax method made it possible to identify a number of parameters,such as the intensity of circulation,the activity of the Earth’s magnetosphere,and the components of the geostrophic wind velocity,the combination of which led to the development of instability.In the future,it is possible to further expand the number of diagnosed parameters to identify more sensitive elements.In this sense,the minimax method,the usefulness of which is shown in this study,can be considered as one of the preparatory steps for the subsequent more detailed method for forecasting individual hazardous weather phenomena. 展开更多
关键词 Minimax method Dangerous weather phenomena Atmospheric instability Boundary layer of the atmosphere Intensity of atmospheric circulation Earth’s magnetosphere Geostrophic wind
下载PDF
汉译英训练(34)
17
作者 李运兴 《大学英语》 2017年第4期62-64,共3页
暗途许地山"我的朋友,且等一等,待我为你点着灯,才走。"*吾威~1听见他的朋友这样说,便笑道:"哈哈,均哥,你以我为女人么?女人在夜间走路才要用火;男子,又何必呢?不用张罗,我空手回去罢——省得以后还要给你送灯回来。"吾威的村... 暗途许地山"我的朋友,且等一等,待我为你点着灯,才走。"*吾威~1听见他的朋友这样说,便笑道:"哈哈,均哥,你以我为女人么?女人在夜间走路才要用火;男子,又何必呢?不用张罗,我空手回去罢——省得以后还要给你送灯回来。"吾威的村庄和均哥所住的地方隔着几重山,*路途崎岖得很厉害~2。*若是夜间要走那条路~3,无论是谁,都得带灯。 展开更多
关键词 许地山 给你 FRIEND MOUNTAINS EVERYWHERE night weather DANGER walking VILLAGE
下载PDF
高一(上)词语辨析练习(英文)
18
作者 郝昌明 《中学生英语(高中版)》 2008年第34期19-21,共3页
Unit 7 1.include/contain (1)I can’t go home now,because my task _______cleaning the windows. (2)As we all know,sea water______ much salt. 2.give in/give up (1)You must______smoking,because it is dangerous for us. (2)... Unit 7 1.include/contain (1)I can’t go home now,because my task _______cleaning the windows. (2)As we all know,sea water______ much salt. 2.give in/give up (1)You must______smoking,because it is dangerous for us. (2)The young man won’t_____before any difficulty. 3. 展开更多
关键词 DANGEROUS DIFFICULTY young SMOKING cleaning HAVEN AGAIN never holds suddenly
下载PDF
Future impacts of climate change on forest fire danger in northeastern China 被引量:15
19
作者 TIAN Xiao-rui SHU Li-fu +2 位作者 ZHAO Feng-jun WANG Ming-yu Douglas J. McRae 《Journal of Forestry Research》 SCIE CAS CSCD 2011年第3期437-446,共10页
Climate warming has a rapid and far-reaching impact on forest fire management in the boreal forests of China. Regional climate model outputs and the Canadian Forest Fire Weather Index (FWI) Sys- tem were used to ana... Climate warming has a rapid and far-reaching impact on forest fire management in the boreal forests of China. Regional climate model outputs and the Canadian Forest Fire Weather Index (FWI) Sys- tem were used to analyze changes to fire danger and the fire season for future periods under IPCC Special Report on Emission Scenarios (SRES) A2 and B2, and the data will guide future fire management planning. We used regional climate in China (1961 1990) as our validation data, and the period (1991–2100) was modeled under SRES A2 and B2 through the weather simulated by the regional climate model system (PRECIS). Meteorological data and fire danger were interpolated to 1 km 2 by using ANUSPLIN software. The average FWI value for future spring fire sea- sons under Scenarios A2 and B2 shows an increase over most of the region. Compared with the baseline, FWI averages of spring fire season will increase by 0.40, 0.26 and 1.32 under Scenario A2, and increase by 0.60, 1.54 and 2.56 under Scenario B2 in 2020s, 2050s and 2080s, respectively. FWI averages of autumn fire season also show an increase over most of the region. FWI values increase more for Scenario B2 than for Scenario A2 in the same periods, particularly during the 2050s and 2080s. Average future FWI values will increase under both scenarios for autumn fire season. The potential burned areas are expected to increase by 10% and 18% in spring for 2080s under Scenario A2 and B2, respectively. Fire season will be prolonged by 21 and 26 days under ScenariosA2 and B2 in 2080s respectively. 展开更多
关键词 climate change fire season forest fire danger northeastern China
下载PDF
当住院变得不再顺畅患者康复之路在何方?(英文) 被引量:9
20
作者 谢斌 《上海精神医学》 2012年第01X期38-40,共3页
The modern history of mental health services in China dates back to the founding of the first psychiatric hospital in Guangzhou by the missionary physician John Kerr in 1898.By the time of liberation in 1949 China’s ... The modern history of mental health services in China dates back to the founding of the first psychiatric hospital in Guangzhou by the missionary physician John Kerr in 1898.By the time of liberation in 1949 China’s population was already 500 million but there were only 10 mental health institutions,1 100 psychiatric beds and 50-60 psychiatrists in the country.Health services developed rapidly in the 1950s but by 1957 there were still only 70 psychiatric hospitals with 11 000 beds 展开更多
关键词 PSYCHIATRIC institutions FOUNDING PHYSICIAN mentally DATES GUANGZHOU DANGEROUS legal currently
下载PDF
上一页 1 2 14 下一页 到第
使用帮助 返回顶部