Microstructure Characterization and Morphology-Based Domain Partitioning

2011 ◽  
pp. 89-140
Keyword(s):  
Microstructure Characterization ◽  
Domain Partitioning

Microstructure characterization and corrosion testing of MAG pulsed duplex stainless steel welds

2017 ◽  
Vol 59 (7-8) ◽  
pp. 642-646 ◽  
Author(s):  
Ion Mitelea ◽  
Ion Dragoş Uţu ◽  
Sorin Dumitru Urlan ◽  
Olimpiu Karancsi
Keyword(s):  
Stainless Steel ◽  
Duplex Stainless Steel ◽  
Microstructure Characterization ◽  
Corrosion Testing ◽  
Steel Welds

scholarly journals In-Memory Interval Joins

2021 ◽  
Author(s):  
Panagiotis Bouros ◽  
Nikos Mamoulis ◽  
Dimitrios Tsitsigkos ◽  
Manolis Terrovitis
Keyword(s):  
Parallel Computation ◽  
State Of The Art ◽  
Complex Data ◽  
Plane Sweep ◽  
Join Algorithm ◽  
Sweep Algorithm ◽  
Join Algorithms ◽  
Domain Partitioning ◽  
Complex Data Structure ◽  
Independent Tasks

AbstractThe interval join is a popular operation in temporal, spatial, and uncertain databases. The majority of interval join algorithms assume that input data reside on disk and so, their focus is to minimize the I/O accesses. Recently, an in-memory approach based on plane sweep (PS) for modern hardware was proposed which greatly outperforms previous work. However, this approach relies on a complex data structure and its parallelization has not been adequately studied. In this article, we investigate in-memory interval joins in two directions. First, we explore the applicability of a largely ignored forward scan (FS)-based plane sweep algorithm, for single-threaded join evaluation. We propose four optimizations for FS that greatly reduce its cost, making it competitive or even faster than the state-of-the-art. Second, we study in depth the parallel computation of interval joins. We design a non-partitioning-based approach that determines independent tasks of the join algorithm to run in parallel. Then, we address the drawbacks of the previously proposed hash-based partitioning and suggest a domain-based partitioning approach that does not produce duplicate results. Within our approach, we propose a novel breakdown of the partition-joins into mini-joins to be scheduled in the available CPU threads and propose an adaptive domain partitioning, aiming at load balancing. We also investigate how the partitioning phase can benefit from modern parallel hardware. Our thorough experimental analysis demonstrates the advantage of our novel partitioning-based approach for parallel computation.

Microstructure Characterization and Hot Corrosion Mechanism of As-cast and Heat Treated High Nb Containing TiAl alloy

2021 ◽  
pp. 109399
Author(s):  
Zhiping Sun ◽  
Wenqing Wu ◽  
Yongnan Chen ◽  
Zhanwei Yuan ◽  
Yongshuai Zhang ◽  
...  
Keyword(s):  
Hot Corrosion ◽  
Tial Alloy ◽  
Microstructure Characterization ◽  
Corrosion Mechanism ◽  
Heat Treated

Microstructure characterization of phase transformations in a Zn–22 wt%Al–2 wt%Cu alloy by XRD, SEM, TEM and FIM

2000 ◽  
Vol 313 (1-2) ◽  
pp. 154-160 ◽  
Author(s):  
Héctor J. Dorantes-Rosales ◽  
Vı́ctor M. López-Hirata ◽  
José L. Méndez-Velázquez ◽  
Maribel L. Saucedo-Muñoz ◽  
David Hernández-Silva
Keyword(s):  
Phase Transformations ◽  
Microstructure Characterization ◽  
Cu Alloy

Mechanical properties and microstructure characterization of coated AM2 Al 6061-T6 mats exposed to simulated thermal blast

2009 ◽  
Vol 16 (1) ◽  
pp. 1-10 ◽  
Author(s):  
C. Wilhelm ◽  
G. LaCaille ◽  
N. Wright ◽  
N. Ward ◽  
C. Shu ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Microstructure Characterization ◽  
Al 6061
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