Results 131 to 140 of about 2,534,483 (361)

Investigation of Iron‐Aluminide‐Like Phase Composition in Complex Concentrated Fe32Cu12Ni11Ti16Al29 Alloy

open access: yesAdvanced Engineering Materials, EarlyView.
This work reveals the phase composition and quantitative morphology analysis of precipitation‐hardened Fe32Cu12Ni11Ti16Al29 complex‐concentrated alloy. The precipitates are shown to have a high coherency. Morphology transition between sphere, cuboidal, and elongated morphology is observed. Finally, the overaging behavior is captured using microhardness.
Rostyslav Nizinkovskyi   +4 more
wiley   +1 more source

Derivations of Initial Data Warehouse Structure by Mapping Operational Database on Transaction Patterns

open access: yesMarket Forces, 2006
Data warehouses improve the quality of integrated information in the organization for decision-making.The data for the data warehouse comes from online transaction systems.
AMINA KHALFE, SYED IRFAN HYDER
doaj  

The Impact of Logistics and Transaction Costs on the Efficiency of the Supply Chain of Distribution Enterprises [PDF]

open access: yesBìznes Inform
The aim of the article is to determine the theoretical aspects of the formation of logistics and transaction costs and the characteristics of their impact on the supply chain of domestic distribution enterprises.
Mudryk Serhii O.
doaj   +1 more source

A note on the performance analysis of static locking in distributed database systems [PDF]

open access: yes
Even though transaction deadlocks can severely affect the performance of distributed database systems, many current evaluation techniques ignore this aspect. Shyu and Li proposed an evaluation method which takes deadlocks into consideration.
Kuang, Yinghong, Mukkamala, Ravi
core   +1 more source

Compacting Transactional Data in Hybrid OLTP & OLAP Databases [PDF]

open access: yesProceedings of the VLDB Endowment (PVLDB), Vol. 5, No. 11, pp. 1424-1435 (2012), 2012
Growing main memory sizes have facilitated database management systems that keep the entire database in main memory. The drastic performance improvements that came along with these in-memory systems have made it possible to reunite the two areas of online transaction processing (OLTP) and online analytical processing (OLAP): An emerging class of hybrid
arxiv  

A Simulative Evaluation of Triply Periodic Minimal Surface Structures in the Context of Elastocaloric Applications

open access: yesAdvanced Engineering Materials, EarlyView.
A simulative evaluation of triply periodic minimal surface (TPMS) structures for an elastocaloric application under compressive load is performed. For the evaluation of the structure's performance, surface/volume ratio, generated heat and invested mechanical work are taken into account and are compared to a tube as a reference specimen.
Michael Fries   +3 more
wiley   +1 more source

Performance analysis of static locking in replicated distributed database systems [PDF]

open access: yes
Data replication and transaction deadlocks can severely affect the performance of distributed database systems. Many current evaluation techniques ignore these aspects, because it is difficult to evaluate through analysis and time consuming to evaluate ...
Kuang, Yinghong, Mukkamala, Ravi
core   +1 more source

HTAP Databases: A Survey [PDF]

open access: yes
Since Gartner coined the term, Hybrid Transactional and Analytical Processing (HTAP), numerous HTAP databases have been proposed to combine transactions with analytics in order to enable real-time data analytics for various data-intensive applications.
arxiv   +1 more source

Comparative Study of Experimental Methods for Measuring Thermal Properties of 100Cr6 Steel Powders

open access: yesAdvanced Engineering Materials, EarlyView.
This study investigates the thermal properties of 100Cr6 steel in both bulk and powder forms. Measuring the very low thermal conductivity typically exhibited by powders poses significant challenges. To address this, two novel measurement techniques—temperature gradient and finite laser pulse response—are introduced and evaluated by comparison with the ...
Junsheng Zhuo   +8 more
wiley   +1 more source

SLSM : An Efficient Strategy for Lazy Schema Migration on Shared-Nothing Databases [PDF]

open access: yesarXiv
By introducing intermediate states for metadata changes and ensuring that at most two versions of metadata exist in the cluster at the same time, shared-nothing databases are capable of making online, asynchronous schema changes. However, this method leads to delays in the deployment of new schemas since it requires waiting for massive data backfill ...
arxiv  

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