This paper initially delineates the symptoms,characteristics,and hazards associated with Chinese chestnut yellow crinkle,as well as the transmission and infection pathways of the disease.Additionally,it proposes the p...This paper initially delineates the symptoms,characteristics,and hazards associated with Chinese chestnut yellow crinkle,as well as the transmission and infection pathways of the disease.Additionally,it proposes the prevention and control strategies of the disease,including rigorous investigation and monitoring of the disease,enhanced monitoring of seedlings and scions,and integrated disease management techniques to promote the tree s health and vitality.These strategies serve to inform the prevention and control of Chinese chestnut yellow crinkle in production.展开更多
The accelerated rehabilitation specialist surgery and general established strategic alliance plan of Taihe hospital is introduced in the paper.The background of strategic alliances established,and the political,enviro...The accelerated rehabilitation specialist surgery and general established strategic alliance plan of Taihe hospital is introduced in the paper.The background of strategic alliances established,and the political,environmental and technological factors are introduced,and stakeholder analysis and management plan,risk analysis and management plan are made.Furthermore,a junior coalition problem that may occur in the process and the resulting deep thinking is analyzed,to provide the reference and enlightenment for the management of hospital and establishment of strategic alliance.展开更多
As a critical prerequisite for semantic facade reconstruction,accurately separating wall and protrusion points from facade point clouds is required.The performance of traditional separation methods is severely limited...As a critical prerequisite for semantic facade reconstruction,accurately separating wall and protrusion points from facade point clouds is required.The performance of traditional separation methods is severely limited by facade conditions,including wall shapes(e.g.,nonplanar walls),wall compositions(e.g.,walls composed of multiple noncoplanar point clusters),and protrusion structures(e.g.,protrusions without regularity,repetitive,or self-symmetric features).This study proposes a more widely applicable wall and protrusion separation method.The major principle underlying the proposed method is to transform the wall and protrusion separation problem as a ground filtering problem and to separate walls and protrusions using ground filtering methods,since the 2 problems can be solved using the same prior knowledge,that is,protrusions(nonground objects)protrude from walls(ground).After transformation problem,cloth simulation filter was used as an example to separate walls and protrusions in 8 facade point clouds with various characteristics.The proposed method was robust to the facade conditions,with a mean intersection over union of 90.7%,and had substantially higher accuracy compared with the traditional separation methods,including region growing-,random sample consensus-,multipass random sample consensus-based,and hybrid methods,with mean intersection over union values of 69.53%,49.52%,63.93%,and 47.07%,respectively.Besides,the proposed method was general,since existing ground filtering methods(including the maximum slope,progressive morphology,and progressive triangular irregular network densification filters)can also perform well.展开更多
基金Supported by Science and Technology Demonstration Base Construction Project—Demonstration Base of Green and Efficient Production Technology for Chestnut in Yanshan Mountain Area.
文摘This paper initially delineates the symptoms,characteristics,and hazards associated with Chinese chestnut yellow crinkle,as well as the transmission and infection pathways of the disease.Additionally,it proposes the prevention and control strategies of the disease,including rigorous investigation and monitoring of the disease,enhanced monitoring of seedlings and scions,and integrated disease management techniques to promote the tree s health and vitality.These strategies serve to inform the prevention and control of Chinese chestnut yellow crinkle in production.
文摘The accelerated rehabilitation specialist surgery and general established strategic alliance plan of Taihe hospital is introduced in the paper.The background of strategic alliances established,and the political,environmental and technological factors are introduced,and stakeholder analysis and management plan,risk analysis and management plan are made.Furthermore,a junior coalition problem that may occur in the process and the resulting deep thinking is analyzed,to provide the reference and enlightenment for the management of hospital and establishment of strategic alliance.
基金supported by the National Natural Science Foundation of China,grant nos.41971380 and 41671414supported by Guangxi Natural Science Fund for Innovation Research Team(grant no.2019JJF50001)+1 种基金the Open Fund of State Key Laboratory of Remote Sensing Science(grant no.OFSLRSS201920)leading talents of Guangdong Pearl River Talent Program(grant no.2021CX02S024).
文摘As a critical prerequisite for semantic facade reconstruction,accurately separating wall and protrusion points from facade point clouds is required.The performance of traditional separation methods is severely limited by facade conditions,including wall shapes(e.g.,nonplanar walls),wall compositions(e.g.,walls composed of multiple noncoplanar point clusters),and protrusion structures(e.g.,protrusions without regularity,repetitive,or self-symmetric features).This study proposes a more widely applicable wall and protrusion separation method.The major principle underlying the proposed method is to transform the wall and protrusion separation problem as a ground filtering problem and to separate walls and protrusions using ground filtering methods,since the 2 problems can be solved using the same prior knowledge,that is,protrusions(nonground objects)protrude from walls(ground).After transformation problem,cloth simulation filter was used as an example to separate walls and protrusions in 8 facade point clouds with various characteristics.The proposed method was robust to the facade conditions,with a mean intersection over union of 90.7%,and had substantially higher accuracy compared with the traditional separation methods,including region growing-,random sample consensus-,multipass random sample consensus-based,and hybrid methods,with mean intersection over union values of 69.53%,49.52%,63.93%,and 47.07%,respectively.Besides,the proposed method was general,since existing ground filtering methods(including the maximum slope,progressive morphology,and progressive triangular irregular network densification filters)can also perform well.
