Results 51 to 60 of about 1,759,075 (150)

Commissioning technology for switching operation between in-service crude oil pipelines for heated and normal-temperature transmission

open access: yesYou-qi chuyun
[Objective] In the inaugural switching operation between Pipelines Q1 and Q2, which were originally used for heated and normaltemperature transmission of crude oil respectively in China, the approach of “transformation while operation” was employed ...
SUN Yong   +7 more
doaj   +1 more source

Estimation of Markov regime-switching regression models with endogenous switching [PDF]

open access: yes
Following Hamilton (1989), estimation of Markov regime-switching regressions nearly always relies on the assumption that the latent state variable controlling the regime change is exogenous.
Richard Startz   +2 more
core  

Connecting Information Geometry and Geometric Mechanics

open access: yesEntropy, 2017
The divergence function in information geometry, and the discrete Lagrangian in discrete geometric mechanics each induce a differential geometric structure on the product manifold Q × Q .
Melvin Leok, Jun Zhang
doaj   +1 more source

Passively Q-Switched Nd:YAG Laser With Graphene Oxide in Heavy Water

open access: yesIEEE Photonics Journal, 2014
Liquid saturable absorbers have some advantages in some aspects over solid saturable absorbers. In this paper, graphene oxide in heavy water (deuteroxide, D2O) dispersion was fabricated and used as absorber in Q-switched Nd:YAG laser for the first time ...
Qiao Wen   +4 more
doaj   +1 more source

Dy2+:CaF2 Saturable-absorber Q switch for the Ruby Laser

open access: yes, 2012
[[abstract]]Passive Q switching of a flash-lamp-pumped ruby laser has been demonstrated with a Dy2+:CaF2 saturable absorber at room temperature. Typically a single Q-switched pulse of 4.5 mJ and 94 ns was observed.
Kuo, Yen-Kuang; Chen, Wei; Stultz, Robert D. ; Birnbaum, Milton
core  

Consumer Switching Costs and Private Information [PDF]

open access: yes
We consider a standard model of consumer switching costs with demand uncertainty where firms observe private information about demand. Given this private information, each firm forms beliefs over different demand realizations as well as beliefs over the ...
Ted To, Erick Elder
core  

Visible Triple-Wavelength Switchable Emission Generated in Passively Q-Switched Nd:YVO4 Self-Raman Laser

open access: yesPhotonics
We report a passively Q-switched self-Raman laser using a dual-end composite c-cut Nd:YVO4 crystal, which generates switchable visible emissions at 533 nm, 560 nm, and 589 nm.
Songtao Li   +6 more
doaj   +1 more source

Diode-pumped Alexandrite lasers in Q-switched and cavity-dumped Q-switched operation

open access: yesOptics Express, 2016
We present the first study of Q-switched Alexandrite lasers under continuous-wave diode-pumping with operation up to 10 kHz repetition rates in TEM00, with spatial quality M2 1.15. With a pulsed-diode dual-end-pumped design, pulse energy is scaled to a record level of 3 mJ.
Thomas, GM   +3 more
openaire   +3 more sources

All optical switching at Gallium/semiconductor interfaces

open access: yes, 2004
We have observed for the first time that the interface between elemental gallium and semiconductors such as ZnSe or Si manifests optically induced reflectivity switching.
Woodford, M.   +2 more
core  

Multi-objective optimization predictive control of high-power explosion-proof permanent synchronous motor

open access: yesGong-kuang zidonghua, 2019
In view of problems that traditional multi-objective predictive control method based on weighting method cannot effectively deal with contradiction of objectives and complex design of weight coefficient, a multi-objective optimization predictive control ...
HE Yuanyuan, GU Mingyue, LIU Ya
doaj   +1 more source

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