An improvement of an approach for representation of tree structures in relational tables

2007 ◽  
Author(s):  
Ivaylo Atanassov
Keyword(s):  
Tree Structures

Experimental Characterization of the Reliability of 3-Terminal Dual-Damascene Copper Interconnect Trees

2002 ◽  
Vol 716 ◽  
Author(s):  
C. L. Gan ◽  
C. V. Thompson ◽  
K. L. Pey ◽  
W. K. Choi ◽  
F. Wei ◽  
...  
Keyword(s):  
Stress Conditions ◽  
Experimental Characterization ◽  
Contact Lines ◽  
Tree Structures ◽  
Similar Test ◽  
Dual Damascene ◽  
Copper Interconnect ◽  
Test Conditions

AbstractElectromigration experiments have been carried out on simple Cu dual-damascene interconnect tree structures consisting of straight via-to-via (or contact-to-contact) lines with an extra via in the middle of the line. As with Al-based interconnects, the reliability of a segment in this tree strongly depends on the stress conditions of the connected segment. Beyond this, there are important differences in the results obtained under similar test conditions for Al-based and Cu-based interconnect trees. These differences are thought to be associated with variations in the architectural schemes of the two metallizations. The absence of a conducting electromigrationresistant overlayer in Cu technology, and the possibility of liner rupture at stressed vias lead to significant differences in tree reliabilities in Cu compared to Al.

Acceleration of MLFMA Simulations Using Trimmed Tree Structures

2021 ◽  
Vol 69 (1) ◽  
pp. 356-365
Author(s):  
Bariscan Karaosmanoglu ◽  
Ozgur Ergul
Keyword(s):  
Tree Structures

scholarly journals Reconstructing Evolving Tree Structures in Time Lapse Sequences

2014 ◽  
Author(s):  
Przemyslaw Glowacki ◽  
Miguel Amavel Pinheiro ◽  
Engin Turetken ◽  
Raphael Sznitman ◽  
Daniel Lebrecht ◽  
...  
Keyword(s):  
Time Lapse ◽  
Tree Structures ◽  
Evolving Tree

Recent Development of the Fast Multipole Boundary Element Method for Modeling Acoustic Problems

2009 ◽  
Author(s):  
Yijun Liu ◽  
Milind Bapat
Keyword(s):  
Boundary Element Method ◽  
Acoustic Wave ◽  
Boundary Element ◽  
Large Scale ◽  
Boundary Integral ◽  
Practical Significance ◽  
Fast Multipole ◽  
Tree Structures ◽  
Wave Problems ◽  
Element Method

Some recent development of the fast multipole boundary element method (BEM) for modeling acoustic wave problems in both 2-D and 3-D domains are presented in this paper. First, the fast multipole BEM formulation for 2-D acoustic wave problems based on a dual boundary integral equation (BIE) formulation is presented. Second, some improvements on the adaptive fast multipole BEM for 3-D acoustic wave problems based on the earlier work are introduced. The improvements include adaptive tree structures, error estimates for determining the numbers of expansion terms, refined interaction lists, and others in the fast multipole BEM. Examples involving 2-D and 3-D radiation and scattering problems solved by the developed 2-D and 3-D fast multipole BEM codes, respectively, will be presented. The accuracy and efficiency of the fast multipole BEM results clearly demonstrate the potentials of the fast multipole BEM for solving large-scale acoustic wave problems that are of practical significance.

Design and Algorithm Optimization of P2P-Based Hybrid Architecture Network Collaboration System

2013 ◽  
Vol 798-799 ◽  
pp. 753-756
Author(s):  
Xing Li ◽  
Pin Wang
Keyword(s):  
System Performance ◽  
Bottom Layer ◽  
Web Pages ◽  
Hybrid Architecture ◽  
Algorithm Optimization ◽  
Joint Work ◽  
Tree Structures ◽  
Joint Learning ◽  
Live Broadcast ◽  
Network Collaboration

The network collaboration system refers to that the users in different locations can see and hear each other through the collaboration system, and can share and browse the text, video, web pages, etc., so as to achieve the purpose of joint work and joint learning. Based on the needs of this collaboration system, this system was studied and designed, the system was based on P2P bottom layer and designed different logical topologies under different collaborative application circumstances, and it designed the topology with the combination of mesh and tree structures according to the particularity of P2P live broadcast, moreover, regarding keys affecting the system performance, i.e. service node lookup, it proposed new algorithm and conducted the optimization.

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