An Efficient Phantom Protection Method for Multi-dimensional Index Structures

Author(s):  
Seok Il Song ◽  
Seok Jae Lee ◽  
Tae Ho Kang ◽  
Jae Soo Yoo
2007 ◽  
Vol 3 (2) ◽  
pp. 6-17
Author(s):  
Seok-Jae Lee ◽  
Seok-Il Song ◽  
Jae-Soo Yoo

The choice of cost-effective method of anticorrosive protection of steel structures is an urgent and time consuming task, considering the significant number of protection ways, differing from each other in the complex of technological, physical, chemical and economic characteristics. To reduce the complexity of solving this problem, the author proposes a computational tool that can be considered as a subsystem of computer-aided design and used at the stage of variant and detailed design of steel structures. As a criterion of the effectiveness of the anti-corrosion protection method, the cost of the protective coating during the service life is accepted. The analysis of existing methods of steel protection against corrosion is performed, the possibility of their use for the protection of the most common steel structures is established, as well as the estimated period of effective operation of the coating. The developed computational tool makes it possible to choose the best method of protection of steel structures against corrosion, taking into account the operating conditions of the protected structure and the possibility of using a protective coating.


Author(s):  
Chun-Hung Lin ◽  
Hsin-Cheng Hsu ◽  
Tsung-Yi Lin ◽  
Ru-Hui Lin ◽  
I-An Chen ◽  
...  

Abstract Protection layers on double ex situ lift-out TEM specimens were investigate in this paper and two protection layer approaches for double INLO or double EXLO were introduced. The improved protection methods greatly decreased the damage layer on the top surface from 90 nm to 5 nm (or lower) during FIB milling. According to the property of different sample and its preliminary treatment in the FIB, we have the satisfactory approaches to be applied. Using this improved protection method, we demonstrate the structures within the TEM lamella can be observed without ion beam damage/implantation during FIB


2020 ◽  
Vol 14 (12) ◽  
pp. 2263-2270 ◽  
Author(s):  
Chenhao Zhang ◽  
Guobing Song ◽  
Liming Yang ◽  
Xinzhou Dong

2021 ◽  
Vol 48 (4) ◽  
pp. 45-48
Author(s):  
Shunsuke Higuchi ◽  
Junji Takemasa ◽  
Yuki Koizumi ◽  
Atsushi Tagami ◽  
Toru Hasegawa

This paper revisits longest prefix matching in IP packet forwarding because an emerging data structure, learned index, is recently presented. A learned index uses machine learning to associate key-value pairs in a key-value store. The fundamental idea to apply a learned index to an FIB is to simplify the complex longest prefix matching operation to a nearest address search operation. The size of the proposed FIB is less than half of an existing trie-based FIB while it achieves the computation speed nearly equal to the trie-based FIB. Moreover, the computation speed of the proposal is independent of the length of IP prefixes, unlike trie-based FIBs.


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