scholarly journals UHM/HNEI EV test and evaluation program. Final report

1992 ◽  
Author(s):  
2021 ◽  
Vol 2108 (1) ◽  
pp. 012007
Author(s):  
Tong Zhu ◽  
Guotian Ji ◽  
Guokai Jiang ◽  
Yifu Ding ◽  
Jiaxu Feng ◽  
...  

Abstract With the development of Connected Vehicle, various of on-board applications and functions rely on stable, reliable and fast-response wireless connections furtherly, making it more urgent and widespread for vehicles to be equipped with relevant antenna systems such as positioning and communication. There are many types of vehicle antenna systems, together with a wide range of installation locations and a complex electronic environment which brings a huge challenges to the development of antenna manufacturers and the matching of automobile OEMs. In order to carry out the R&D, matching and testing of the vehicle antenna system better, various parties have proposed a multi-dimensional test and evaluation methods, but there is still a lack of horizontal evaluation between them. This paper analyses the requirements of automotive antenna system evaluation, sorts out and compares the technical paths of various common solutions, summarizes the characteristics and differences of various solutions, and provides a research foundation for further optimizing the vehicle-level antenna system test and evaluation program.


1980 ◽  
Vol 9 (1) ◽  
pp. 3-20
Author(s):  
Frederick P. DeLuca ◽  
Donald C. Scouten

The use of Piagetian tasks to study logical thinking has continued at a high rate despite the fact that their inherent limitations reduce the probability of finding new knowledge. In this study a microcomputer system was programmed with Piagetian tasks in an attempt to gain advantages while avoiding the limitations of the original tasks. College students viewed tasks in the form of alphanumerics and graphics on a TV monitor and interacted with the tasks by way of a keyboard. All key depressions and times between depressions were recorded on floppy disks which were subsequently interfaced with the IBM/370 computer for data manipulation and analysis. After a two-year test and evaluation program, which involved 360 students in three experiments, these investigators found that the microcomputer system contained several advantages over the original Piagetian tasks and provided the researcher with many new alternatives in the study of logical thinking.


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