WTFZ] This paper discusses the optimal nesting problem for minimizing the scrap in continuous shape stamping processes. The shape sliding technique is used to propose a new approach, OVERLAP-and-ESCAPE, to solve the ...WTFZ] This paper discusses the optimal nesting problem for minimizing the scrap in continuous shape stamping processes. The shape sliding technique is used to propose a new approach, OVERLAP-and-ESCAPE, to solve the problem of continuously nesting shapes onto a metal coil of fixed or selectable width. The approach is used to construct the objective function of the mathematical model of the problem using the Simulated Annealing Algorithm to determine the globally minimal configurations for the nesting problems. Some representative cases are studied and the results are encouraging. An automatic nesting software package for manufacturing bicycle chain link blanks is also described.[展开更多
Wireless big data describes a wide range of massive data that is generated,collected and stored in wireless networks by wireless devices and users.While these data share some common properties with traditional big dat...Wireless big data describes a wide range of massive data that is generated,collected and stored in wireless networks by wireless devices and users.While these data share some common properties with traditional big data,they have their own unique characteristics and provide numerous advantages for academic research and practical applications.This article reviews the recent advances and trends in the field of wireless big data.Due to space constraints,this survey is not intended to cover all aspects in this field,but to focus on the data aided transmission,data driven network optimization and novel applications.It is expected that the survey will help the readers to understand this exciting and emerging research field better.Moreover,open issues and promising future directions are also identified.展开更多
文摘WTFZ] This paper discusses the optimal nesting problem for minimizing the scrap in continuous shape stamping processes. The shape sliding technique is used to propose a new approach, OVERLAP-and-ESCAPE, to solve the problem of continuously nesting shapes onto a metal coil of fixed or selectable width. The approach is used to construct the objective function of the mathematical model of the problem using the Simulated Annealing Algorithm to determine the globally minimal configurations for the nesting problems. Some representative cases are studied and the results are encouraging. An automatic nesting software package for manufacturing bicycle chain link blanks is also described.[
基金This research work is supported in part by the U.S.OASD(R&E)(Office of the Assistant Secretary of Defense for Research and Engineering)(No.FA8750-15-2-0119)by the U.S.Army Research Office(No.W911NF-16-1-0496)+1 种基金The U.S.Government is authorized to reproduce and distribute reprints for Governmental purposes notwithstanding any copyright notation thereon.The views and conclusions contained herein are those of the authors and should not be interpreted as necessarily representing the official policies or endorsements,either expressed or implied,of the Office of the Assistant Secretary of Defense for Research and Engineering(OASD(R&E)),the Army Research Office,or the U.S.Government.Sihai Zhang received support from Key Program of National Natural Science Foundation of China(No.61631018)the Fundamental Research Funds for the Central Universities and Huawei Technology Innovative Research on Wireless Big Data.
文摘Wireless big data describes a wide range of massive data that is generated,collected and stored in wireless networks by wireless devices and users.While these data share some common properties with traditional big data,they have their own unique characteristics and provide numerous advantages for academic research and practical applications.This article reviews the recent advances and trends in the field of wireless big data.Due to space constraints,this survey is not intended to cover all aspects in this field,but to focus on the data aided transmission,data driven network optimization and novel applications.It is expected that the survey will help the readers to understand this exciting and emerging research field better.Moreover,open issues and promising future directions are also identified.
