To solve the problems of unreasonable motion trajectory, slow formation recovery, and lowobstacle avoidance safety in multi-robot systems, themethod based on the improved virtual spring (IVS) path planning method and ...
详细信息
Brain-computer interface is a new human-computer interaction technology that connects the human brain with external devices through computers and other electronic devices, and converts neural activity signals into con...
详细信息
In this paper, we propose an object segmentation method based on 3D point cloud geometric information, which includes two parts: preprocessing of Lidar data and point cloud segmentation. Firstly, in the point cloud pr...
详细信息
As the interaction core of the energy internet, the power router can achieve fast transmission of power between different external electrical devices. This requires that the power router has the function of plug-and-p...
详细信息
As primary degradation products of phthalate esters,phthalate monoesters(MPEs)have been widely detected in various aquatic environments and drawn growing toxicological *** kinetics that is of importance for assessing ...
详细信息
As primary degradation products of phthalate esters,phthalate monoesters(MPEs)have been widely detected in various aquatic environments and drawn growing toxicological *** kinetics that is of importance for assessing environmental persistence of chemicals remain elusive for ***,kinetics of base-catalyzed and neutral hydrolysis for 18 MPEs with different leaving groups was investigated by density functional theory *** indicate that MPEs with leaving groups having p Kaof<10 prefer dissociative transition *** are more persistent than their parents,and their hydrolysis half-lives were calculated to vary from 3.4 min to 79.2 years(p H=7–9).A quantitative structure-activity relationship model was developed for predicting the hydrolysis kinetics *** was found that p Kaof the leaving groups and electronegativity of the MPEs are key factors determining the hydrolysis *** work may lay a theoretical foundation for better understanding the chemical process that governs MPE persistence in aquatic environments.
Al-Cu-Mn alloys are widely used to produce automobile components like cylinder heads and engine blocks because of their capability to retain excellent thermal and mechanical characteristics at high ***,the Al-Cu-Mn-ba...
详细信息
Al-Cu-Mn alloys are widely used to produce automobile components like cylinder heads and engine blocks because of their capability to retain excellent thermal and mechanical characteristics at high ***,the Al-Cu-Mn-based alloys demonstrate restricted fluidity,leading to casting defects such as shrinkage and incomplete *** research investigated the microstructure and fluidity of Al-4.7Cu-1.0Mn-0.5Mg(wt%)alloy with minor cerium(Ce)*** as-cast alloys predominantly compriseα-Al matrix,accompanied by the presence of Al_(2)Cu,Al_(6)Mn,and Al_(8)Cu_(4)Ce *** influence of adding Ce on the fluidity of the Al-4.7Cu-1.0Mn-0.5Mg alloy was investigated using a trispiral fluidity test mold in this *** findings suggest that the addition of Ce within the range of 0.1 wt%to 0.5 wt%in the Al-4.7Cu-1.0Mn-0.5Mg alloy results in an enhancement in ***,the alloy containing 0.4 wt%Ce exhibits a significant increase in fluidity distance,from 349.7 to 485.7 *** improvement can be attributed to the reduction in viscosity,the refinement of secondary dendrite arm spacing,and the modification of secondary phase ***,a higher concentration of Ce leads to a decrease in fluidity length,potentially due to the formation of Al_(8)Cu_(4)Ce.
Fault diagnosis can help operators make faster judgment and more accurate countermeasures in chemical processes. Though the traditional convolutional neural network method can extract the features of data, the in-dept...
详细信息
Container unloading is one of the most challenging tasks in depalletizing applications and has not been well addressed. Because it is non-trivial to accurately detect irregularly packed boxes and efficiently unload bo...
详细信息
An online distributed optimization problem over a multi-agent system is concerned in this paper. Each agent can only evaluate the function value of its local objective function. A distributed zeroth-order mirror desce...
详细信息
Inspired by the framework of TCTrack, a temporal context attention-based tracker is proposed for Unmanned Aerial Vehicle(UAV). The instruction of attention mechanism enables trackers to pay attention to more effective...
详细信息
暂无评论