A multi-purpose prototype test system is developed to study the mechanical behavior of tunnel sup-porting structure,including a modular counterforce device,a powerful loading equipment,an advanced intelligent manageme...A multi-purpose prototype test system is developed to study the mechanical behavior of tunnel sup-porting structure,including a modular counterforce device,a powerful loading equipment,an advanced intelligent management system and an efficient noncontact deformation measurement system.The functions of the prototype test system are adjustable size and shape of the modular counterforce structure,sufficient load reserve and accurate loading,multi-connection linkage intelligent management,and high-precision and continuously positioned noncontact deformation measurement.The modular counterforce structure is currently the largest in the world,with an outer diameter of 20.5 m,an inner diameter of 16.5 m and a height of 6 m.The case application proves that the prototype test system can reproduce the mechanical behavior of the tunnel lining during load-bearing,deformation and failure processes in detail.展开更多
Objectives:The present study examined the relationship between college students’moral elevation and prosocial behavior.As well as the mediating role of perceived social support and the moderating role of moral identi...Objectives:The present study examined the relationship between college students’moral elevation and prosocial behavior.As well as the mediating role of perceived social support and the moderating role of moral identity.Methods:A sample of 489 college students were recruited for the study.They were asked to complete a series of questionnaires,including Moral Elevation Scale(MES),Perceived Social Support Scale(PSSS),Moral Identity Scale(MIS)and Prosocial Tendency Measure(PTM).As part of the data analysis,we used correlation analysis and the method of constructing latent variable structural equation model to explore the mechanism of action among variables.Results:After controlling for gender,discipline,the research found that:(1)Moral elevation positively predicted the prosocial behavior among the college students;(2)Perceived social support mediated the relationship between moral elevation and prosocial behavior;(3)Moral identity moderated the second half of the model(i.e.,the link between perceived social support and prosocial behavior).Specifically,the mediating effect of perceived social support was stronger for college students with high-level moral identity compared to those with low-level moral identity.Conclusions:Moral identity significantly moderates the mediating effect of perceived social support,and the mediating model with moderated is established.展开更多
Classification of human actions under video surveillance is gaining a lot of attention from computer vision researchers.In this paper,we have presented methodology to recognize human behavior in thin crowd which may b...Classification of human actions under video surveillance is gaining a lot of attention from computer vision researchers.In this paper,we have presented methodology to recognize human behavior in thin crowd which may be very helpful in surveillance.Research have mostly focused the problem of human detection in thin crowd,overall behavior of the crowd and actions of individuals in video sequences.Vision based Human behavior modeling is a complex task as it involves human detection,tracking,classifying normal and abnormal behavior.The proposed methodology takes input video and applies Gaussian based segmentation technique followed by post processing through presenting hole filling algorithm i.e.,fill hole inside objects algorithm.Human detection is performed by presenting human detection algorithm and then geometrical features from human skeleton are extracted using feature extraction algorithm.The classification task is achieved using binary and multi class support vector machines.The proposed technique is validated through accuracy,precision,recall and F-measure metrics.展开更多
In order to investigate the behaviors and stability of rock strata surrounding an entry with bolt supporting in large dip coal seams (LDCSs) dipping from 25° to 45°, a self-developed rotatable experimental f...In order to investigate the behaviors and stability of rock strata surrounding an entry with bolt supporting in large dip coal seams (LDCSs) dipping from 25° to 45°, a self-developed rotatable experimental frame for similar material simulation test was used to build the model with the dip of 30°, based on analyses of geological and technological conditions in Huainan mine area, Anhui, China. The strata behaviors, such as extracting- and mining-induced stresses development, deformation and failure modes, were synthetically integrated during working face advancing. Results show that the development characteristics of mining-induced stress and deformation are asymmetrical in the roadway. The strata behaviors are totally different in different sections of the roadway. Because of asymmetrically geometrical structure influenced by increasing dip, strata dislocating, rock falling and breaking occur in roof. Then, squeezing, collapsing and caving of coal happen in upper- and lower-rib due to shearing action caused by asymmetrical roof bending and dislocating. Owing to the absence of supporting, floor heaving is very violent and usually the zone of floor heaving develops from the lower-rib to upper-rib. Engineering practices show that, due to the asymmetrical characteristics of rock pressure and roadway configuration, it is more difficult to implement bolt supporting system to control rock stability of roadways in LDCSs. The upper-rib and roof of entries are the key sections. Consequently, it is reliable to use asymmetrical bolt-mesh-cable supporting system to control rock stability of roadways based on the asymmetrical characteristics of roadway configuration and strata behaviors.展开更多
With the intensifying aging of the population,the phenomenon of the elderly living alone is also increasing.Therefore,using modern internet of things technology to monitor the daily behavior of the elderly in indoors ...With the intensifying aging of the population,the phenomenon of the elderly living alone is also increasing.Therefore,using modern internet of things technology to monitor the daily behavior of the elderly in indoors is a meaningful study.Video-based action recognition tasks are easily affected by object occlusion and weak ambient light,resulting in poor recognition performance.Therefore,this paper proposes an indoor human behavior recognition method based on wireless fidelity(Wi-Fi)perception and video feature fusion by utilizing the ability of Wi-Fi signals to carry environmental information during the propagation process.This paper uses the public WiFi-based activity recognition dataset(WIAR)containing Wi-Fi channel state information and essential action videos,and then extracts video feature vectors and Wi-Fi signal feature vectors in the datasets through the two-stream convolutional neural network and standard statistical algorithms,respectively.Then the two sets of feature vectors are fused,and finally,the action classification and recognition are performed by the support vector machine(SVM).The experiments in this paper contrast experiments between the two-stream network model and the methods in this paper under three different environments.And the accuracy of action recognition after adding Wi-Fi signal feature fusion is improved by 10%on average.展开更多
This study analyzes the role of intraorganizational employee navigation behavior in the relationship between coaching leadership and career success.Based on the theory of social cognition and social capital,593 valid ...This study analyzes the role of intraorganizational employee navigation behavior in the relationship between coaching leadership and career success.Based on the theory of social cognition and social capital,593 valid samples are collected.The hypotheses were verified by AMOS,SPSS and Process tools.The research found that coaching leadership can positively predict the career success of employees,coaching leadership and career success is partially mediated by intraorganizational employee navigation behavior.Based on the empirical research results,it is suggested that enterprises strengthen the coaching leadership training,pay attention to stimulate employees to carry out intraorganizational navigation behavior within the organization,and establish a healthy view of professional success,which provides certain theoretical and empirical support for the enterprise management practice.展开更多
Yielding support is often used in the squeezing tunnel to prevent damage to the lining induced by large deformation of the surrounding rock.Highly Deformable Elements(HDE)which is often installed along the circumferen...Yielding support is often used in the squeezing tunnel to prevent damage to the lining induced by large deformation of the surrounding rock.Highly Deformable Elements(HDE)which is often installed along the circumferential direction of the shotcrete lining is a common type of yielding support.To determine the yield parameters of HDE,the support characteristic of the lining using HDE and the ground pressure considering strain-softening of soft rock were analyzed by an analytical method.The analytical solution showed that when considering the strain-softening of squeezing ground,the ground pressure has a non-zero minimum value.The minimum value of ground stress can be used to determine the constant yield stress of the HDE,and the corresponding deformation of the minimum ground pressure can be used to determine the deformation capacity of the HDE.Based on the variation in the design constant yield stress and yield displacement of HDE with the in-situ stress and the mechanical parameters of the soft rock,equations were proposed for determining of the yield parameters of the HDE.展开更多
Objective:To describe the self-management(SM)behavior among persons with mild-to-moderate chronic obstructive pulmonary disease(COPD),and it examines the correlation between COPD knowledge,self-efficacy,perceived soci...Objective:To describe the self-management(SM)behavior among persons with mild-to-moderate chronic obstructive pulmonary disease(COPD),and it examines the correlation between COPD knowledge,self-efficacy,perceived social support,and SM behavior among persons with mild-to-moderate COPD in Wenzhou,China.Methods:A simple random sampling technique was used to recruit 121 persons with mild-to-moderate COPD who visited the respiratory outpatient department of the First Affiliated Hospital of Wenzhou Medical University in Wenzhou,China.Research instruments include a demographic data questionnaire,COPD SM scale,COPD knowledge questionnaire,6-item chronic disease self-efficacy scale,and perceived social suppor t scale.Descriptive statistics and Pearson's Correlation were used for data analysis.Results:The findings show that the mean score of COPD SM scale was 2.70(SD=0.45).The Pearson correlation analysis revealed that the COPD knowledge(r=0.47,P<0.001),self-efficacy(r=0.28,P=0.001),and perceived social support(r=0.48,P<0.001)were positively correlated to the COPD SM behavior among persons with mild-to-moderate COPD in Wenzhou,China.Conclusions:The findings indicate that disease knowledge,self-efficacy,and perceived social support were related to SM behavior in persons with mild-to-moderate COPD,which provides a theoretical basis for developing SM interventions for persons with mildto-moderate COPD and improving this population's SM behavior.展开更多
文摘A multi-purpose prototype test system is developed to study the mechanical behavior of tunnel sup-porting structure,including a modular counterforce device,a powerful loading equipment,an advanced intelligent management system and an efficient noncontact deformation measurement system.The functions of the prototype test system are adjustable size and shape of the modular counterforce structure,sufficient load reserve and accurate loading,multi-connection linkage intelligent management,and high-precision and continuously positioned noncontact deformation measurement.The modular counterforce structure is currently the largest in the world,with an outer diameter of 20.5 m,an inner diameter of 16.5 m and a height of 6 m.The case application proves that the prototype test system can reproduce the mechanical behavior of the tunnel lining during load-bearing,deformation and failure processes in detail.
基金the Chinese National Office for Education Sciences Planning(Grant No.DBA190311).
文摘Objectives:The present study examined the relationship between college students’moral elevation and prosocial behavior.As well as the mediating role of perceived social support and the moderating role of moral identity.Methods:A sample of 489 college students were recruited for the study.They were asked to complete a series of questionnaires,including Moral Elevation Scale(MES),Perceived Social Support Scale(PSSS),Moral Identity Scale(MIS)and Prosocial Tendency Measure(PTM).As part of the data analysis,we used correlation analysis and the method of constructing latent variable structural equation model to explore the mechanism of action among variables.Results:After controlling for gender,discipline,the research found that:(1)Moral elevation positively predicted the prosocial behavior among the college students;(2)Perceived social support mediated the relationship between moral elevation and prosocial behavior;(3)Moral identity moderated the second half of the model(i.e.,the link between perceived social support and prosocial behavior).Specifically,the mediating effect of perceived social support was stronger for college students with high-level moral identity compared to those with low-level moral identity.Conclusions:Moral identity significantly moderates the mediating effect of perceived social support,and the mediating model with moderated is established.
文摘Classification of human actions under video surveillance is gaining a lot of attention from computer vision researchers.In this paper,we have presented methodology to recognize human behavior in thin crowd which may be very helpful in surveillance.Research have mostly focused the problem of human detection in thin crowd,overall behavior of the crowd and actions of individuals in video sequences.Vision based Human behavior modeling is a complex task as it involves human detection,tracking,classifying normal and abnormal behavior.The proposed methodology takes input video and applies Gaussian based segmentation technique followed by post processing through presenting hole filling algorithm i.e.,fill hole inside objects algorithm.Human detection is performed by presenting human detection algorithm and then geometrical features from human skeleton are extracted using feature extraction algorithm.The classification task is achieved using binary and multi class support vector machines.The proposed technique is validated through accuracy,precision,recall and F-measure metrics.
基金Supported by the National Basic Research Program of China (2010CB226806)the Visiting Scholar Foundation of Key Laboratory for Exploitation of Southwestern Resources and Environmental Disaster Control Engineeringthe Outstanding Innovation Group Program of Anhui University of Science and Technology
文摘In order to investigate the behaviors and stability of rock strata surrounding an entry with bolt supporting in large dip coal seams (LDCSs) dipping from 25° to 45°, a self-developed rotatable experimental frame for similar material simulation test was used to build the model with the dip of 30°, based on analyses of geological and technological conditions in Huainan mine area, Anhui, China. The strata behaviors, such as extracting- and mining-induced stresses development, deformation and failure modes, were synthetically integrated during working face advancing. Results show that the development characteristics of mining-induced stress and deformation are asymmetrical in the roadway. The strata behaviors are totally different in different sections of the roadway. Because of asymmetrically geometrical structure influenced by increasing dip, strata dislocating, rock falling and breaking occur in roof. Then, squeezing, collapsing and caving of coal happen in upper- and lower-rib due to shearing action caused by asymmetrical roof bending and dislocating. Owing to the absence of supporting, floor heaving is very violent and usually the zone of floor heaving develops from the lower-rib to upper-rib. Engineering practices show that, due to the asymmetrical characteristics of rock pressure and roadway configuration, it is more difficult to implement bolt supporting system to control rock stability of roadways in LDCSs. The upper-rib and roof of entries are the key sections. Consequently, it is reliable to use asymmetrical bolt-mesh-cable supporting system to control rock stability of roadways based on the asymmetrical characteristics of roadway configuration and strata behaviors.
基金supported by the National Natural Science Foundation of China(No.62006135)the Natural Science Foundation of Shandong Province(No.ZR2020QF116)。
文摘With the intensifying aging of the population,the phenomenon of the elderly living alone is also increasing.Therefore,using modern internet of things technology to monitor the daily behavior of the elderly in indoors is a meaningful study.Video-based action recognition tasks are easily affected by object occlusion and weak ambient light,resulting in poor recognition performance.Therefore,this paper proposes an indoor human behavior recognition method based on wireless fidelity(Wi-Fi)perception and video feature fusion by utilizing the ability of Wi-Fi signals to carry environmental information during the propagation process.This paper uses the public WiFi-based activity recognition dataset(WIAR)containing Wi-Fi channel state information and essential action videos,and then extracts video feature vectors and Wi-Fi signal feature vectors in the datasets through the two-stream convolutional neural network and standard statistical algorithms,respectively.Then the two sets of feature vectors are fused,and finally,the action classification and recognition are performed by the support vector machine(SVM).The experiments in this paper contrast experiments between the two-stream network model and the methods in this paper under three different environments.And the accuracy of action recognition after adding Wi-Fi signal feature fusion is improved by 10%on average.
文摘This study analyzes the role of intraorganizational employee navigation behavior in the relationship between coaching leadership and career success.Based on the theory of social cognition and social capital,593 valid samples are collected.The hypotheses were verified by AMOS,SPSS and Process tools.The research found that coaching leadership can positively predict the career success of employees,coaching leadership and career success is partially mediated by intraorganizational employee navigation behavior.Based on the empirical research results,it is suggested that enterprises strengthen the coaching leadership training,pay attention to stimulate employees to carry out intraorganizational navigation behavior within the organization,and establish a healthy view of professional success,which provides certain theoretical and empirical support for the enterprise management practice.
基金the support of the National Natural Science Foundation of China(Grant Nos.52179113,51991392 and 52279119)the Second Comprehensive Scientific Expedition on the Tibetan Plateau(No.2019QZKK0904)。
文摘Yielding support is often used in the squeezing tunnel to prevent damage to the lining induced by large deformation of the surrounding rock.Highly Deformable Elements(HDE)which is often installed along the circumferential direction of the shotcrete lining is a common type of yielding support.To determine the yield parameters of HDE,the support characteristic of the lining using HDE and the ground pressure considering strain-softening of soft rock were analyzed by an analytical method.The analytical solution showed that when considering the strain-softening of squeezing ground,the ground pressure has a non-zero minimum value.The minimum value of ground stress can be used to determine the constant yield stress of the HDE,and the corresponding deformation of the minimum ground pressure can be used to determine the deformation capacity of the HDE.Based on the variation in the design constant yield stress and yield displacement of HDE with the in-situ stress and the mechanical parameters of the soft rock,equations were proposed for determining of the yield parameters of the HDE.
文摘Objective:To describe the self-management(SM)behavior among persons with mild-to-moderate chronic obstructive pulmonary disease(COPD),and it examines the correlation between COPD knowledge,self-efficacy,perceived social support,and SM behavior among persons with mild-to-moderate COPD in Wenzhou,China.Methods:A simple random sampling technique was used to recruit 121 persons with mild-to-moderate COPD who visited the respiratory outpatient department of the First Affiliated Hospital of Wenzhou Medical University in Wenzhou,China.Research instruments include a demographic data questionnaire,COPD SM scale,COPD knowledge questionnaire,6-item chronic disease self-efficacy scale,and perceived social suppor t scale.Descriptive statistics and Pearson's Correlation were used for data analysis.Results:The findings show that the mean score of COPD SM scale was 2.70(SD=0.45).The Pearson correlation analysis revealed that the COPD knowledge(r=0.47,P<0.001),self-efficacy(r=0.28,P=0.001),and perceived social support(r=0.48,P<0.001)were positively correlated to the COPD SM behavior among persons with mild-to-moderate COPD in Wenzhou,China.Conclusions:The findings indicate that disease knowledge,self-efficacy,and perceived social support were related to SM behavior in persons with mild-to-moderate COPD,which provides a theoretical basis for developing SM interventions for persons with mildto-moderate COPD and improving this population's SM behavior.
