Results 11 to 20 of about 4,436,913 (350)

An Examination of the Failure Rate and Content Equivalency of Electronic Surrogates and the Implications for Print Equivalent Preservation

open access: yesEvidence Based Library and Information Practice, 2010
Objective – This study sought to determine whether evidence indicates a need to preserve print equivalent journal collections. In addition, this research aimed to provide data on the failure rate of print equivalent materials for possible digitization to
Ken Ladd
doaj   +1 more source

The Generalized Exponential Extended Exponentiated Family of Distributions: Theory, Properties, and Applications

open access: yesMathematics, 2022
Here, we propose a new generalized exponential extended exponentiated (NGE3) family of distributions. Some statistical properties of proposed family are gained.
Sajid Hussain   +3 more
doaj   +1 more source

Performance of screening for aneuploidies by cell-free DNA analysis of maternal blood in twin pregnancies [PDF]

open access: yes, 2015
Objectives To report clinical implementation of cell‐free DNA (cfDNA) analysis of maternal blood in screening for trisomies 21, 18 and 13 in twin pregnancies and examine variables that could influence the failure rate of the test.
BEVILACQUA, ELISA   +7 more
core   +1 more source

Failure rate of labor epidural: An observational study among different levels of trainee anesthesiologists in a university hospital of a developing country

open access: yesJournal of Anaesthesiology Clinical Pharmacology, 2021
Context: Frequent use of labor epidural has also led to a corresponding increase in failed epidural analgesia (FEA). Aims: This study aims to identify the overall rate of FEA and evaluate its association with trainee anesthesiologist at different years ...
Samina Ismail   +3 more
doaj   +1 more source

Feasibility study on lengthening the high-voltage cable section and reducing the number of cable joints via alternative bonding methods

open access: yesHigh Voltage, 2019
Among all failures in cable circuits, the failure rate of cable joints is much higher than that in cable bodies. In an effort to reduce cable failure rates and improve the reliability of power cable systems, this article studies the possibility of ...
Mingzhen Li   +7 more
doaj   +1 more source

Comparing orthodontic bracket bonding methods based on bracket failure rates

open access: yesFogorvosi Szemle, 2020
During modern orthodontic treatment brackets are usually placed directly on the tooth enamel. The bond has to withstand a variety of forces (occlusial, masticatory, as well as forces from the wire itself) in the moist oral environment. Additionally, it’s
Eszter Svidró   +2 more
doaj   +1 more source

An Innovative Reliability Oriented Approach for Restructured Power System Considering the Impact of Integrating Electric Vehicles and Renewable Energy Resources

open access: yesIEEE Access, 2022
Attributing to the irreplaceable quality of nil carbon footprints, the power system considering the integration of electric vehicles and renewable energy resources are appealing growing attention in the recent time, but the reliability of their ...
Iram Akhtar   +3 more
doaj   +1 more source

Non-Newtonian Rheology of Igneous Melts at High Stresses and Strain Rates: Experimental Results for Rhyolite, Andesite, Basalt, and Nephelinite [PDF]

open access: yes, 1990
The stress-strain rate relationships of four silicate melt compositions (high-silica rhyolite, andesite, tholeiitic basalt, and nephelinite) have been studied using the fiber elongation method.
Dingwell, Donald B., Webb, Sharon L.
core   +1 more source

On the Maintenance Modeling of a Hybrid Model with Exponential Repair Efficiency [PDF]

open access: yesInternational Journal of Mathematical, Engineering and Management Sciences, 2021
In the reliability literature, maintenance efficiency is usually dealt with as a fixed value. Since repairable systems are subject to different degrees and types of repair, it is more convenient to regard a random variable for maintenance efficiency ...
Wassila Nissas , Soufiane Gasmi
doaj   +1 more source

Strain rate and temperature dependence of Omori law scaling constants of AE data: Implications for earthquake foreshock-aftershock sequences [PDF]

open access: yes, 2004
Little is known about the temperature and strain rate dependence of acoustic emission AE activity (AE). Hence, we carried out a preliminary series of flow-through triaxial compression tests on porous sandstones at different temperatures and strain rates.
Aki   +24 more
core   +1 more source

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