Results 21 to 30 of about 5,358,628 (295)

Research on evaluation of behavior safety level of miners based on cloud matter element theory

open access: yesMeikuang Anquan, 2021
In order to evaluate the behavior safety level of miner scientifically and reasonably, according to SHELL model, the evaluation index system of behavior safety level is established from five aspects: human factor, S-L interface factor, H-L interface ...
BAI Yanlong, CHEN Yu, LI Haili, BAI Changjiang, XI Long, XUE Yubi, PENG Jiajia, WANG Xin
doaj   +1 more source

The Most Irrational Rational Theories [PDF]

open access: yes, 2018
We propose a two-parameter family of modular invariant partition functions of two-dimensional conformal field theories (CFTs) holographically dual to pure three-dimensional gravity in anti de Sitter space.
Benjamin, Nathan   +3 more
core   +2 more sources

A Simple Approach for the Design of Ductile Earthquake-Resisting Frame Structures Counting for P-Delta Effect

open access: yesBuildings, 2019
In the last decades, the possibility to use the inelastic capacities of structures have driven the seismic design philosophy to conceive structures with ductile elements, able to obtain large deformations without compromising structural safety.
Rafael Shehu   +2 more
doaj   +1 more source

Tick trails: the role of online recreational trail reviews in identifying risk factors and behavioral recommendations associated with tick encounters in Indiana

open access: yesBMC Public Health, 2021
Background Recreational trails abound across the United States and represent high risk areas for tick exposure. Although online reviews represent a rich source of user information, they have rarely been used in determining the risk of tick exposure ...
Kristina R. Anderson   +2 more
doaj   +1 more source

Efficient Behavior Factor Estimation in Moment-Resisting Reinforced Concrete Frames through Gene Expression Programming [PDF]

open access: yesJournal of Soft Computing in Civil Engineering
This study presents a novel approach for estimating the behavior factor of moment-resisting reinforced concrete (RC) frames using a gene expression programming (GEP) method, which involves designing and analyzing over three hundred RC frames.
Niloufar Azhdari   +3 more
doaj   +1 more source

Evaluation of Seismic Performance Parameters of Steel Moment Frames Using Conventional and Advanced Pushover Methods with Considering Higher Mode and Near Field Pulse-Type Effects [PDF]

open access: yesJournal of Structural and Construction Engineering, 2016
Ductility, over-strength, material properties and design methodology are the factors affect the reduction rate of the lateral strength of structure in nonlinear region.
Navid Siahpolo   +2 more
doaj  

Factors associated with health risk behavior among school children in urban Vietnam [PDF]

open access: yesGlobal Health Action, 2013
Background: Health risk behavior among young people is a public health problem in Vietnam. In addition, road traffic injuries are the leading cause of death for those aged 15–29 years.
Tran Bich Phuong   +4 more
doaj   +1 more source

Comparison between Design Methods for Seismic Retrofit of Reinforced Concrete Frames Using Dissipative Bracing Systems

open access: yesBuildings
Braces equipped with dissipative devices are among the most widespread methods for the seismic strengthening of seismically prone reinforced concrete (RC) frames.
Piero Colajanni   +2 more
doaj   +1 more source

Sensitivity of pQCD deuteron structure to the nucleon form factors [PDF]

open access: yes, 2002
We discuss the applicability of pQCD to the elastic scattering of electrons on protons and deuterons. We analyze the $Q^2$-dependence of the reduced deuteron form factor, taking into account the recent data on the electric proton form factor and we find ...
Rekalo, Michail P.   +1 more
core   +3 more sources

Power laws and self-similar behavior in negative ionization fronts

open access: yes, 2005
We study anode-directed ionization fronts in curved geometries. When the magnetic effects can be neglected, an electric shielding factor determines the behavior of the electric field and the charged particle densities.
Burgers J M   +8 more
core   +1 more source

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