Results 61 to 70 of about 16,032 (285)

Hydrothermal Embedding of Pd Single Atoms Into SnO2 for Efficient CO Oxidation

open access: yesAdvanced Science, EarlyView.
By applying hydrothermal regulation to SnO2‐supported PdO, we achieve atomic dispersion of Pd into the SnO2 lattice, which activates the lattice oxygen neighboring Pd atoms to generate oxygen vacancies and facilitates subsequent O2 activation, thereby promoting CO oxidation to proceed via a low‐energy‐barrier MvK pathway while avoiding CO poisoning ...
Yingsheng An   +12 more
wiley   +1 more source

MAP/PH/1 queueing model with working vacation and crowdsourcing

open access: yes, 2016
Crowdsourcing has been used in different domains such as healthcare, computer science, environmental sciences, business and marketing. However, only recently, queueing models useful in the context of crowdsourcing have been studied. These studies involve
Ozkar, Serife   +3 more
core   +1 more source

W‐N‐C Tandem Catalytic Centers Mediating Efficient Charge Transfer for the Enhanced Radical‐Path U(VI) Photoreduction

open access: yesAdvanced Science, EarlyView.
This work constructed a tandem W−N−C center to simultaneously achieve the regulation of reaction pathways and optimization of charge separation efficiency. The Lewis‐acidic W6+ sites activated O2 to generate O2−$O_2^ - $, with enhanced charge separation via electronic modulation, steering U(VI) reduction down an efficient radical pathway.
Zhiyao Wu   +11 more
wiley   +1 more source

Optimal management of the machine repair problem with working vacation: Newton's method

open access: yes, 2014
This paper studies the M/M/1 machine repair problem with working vacation in which the server works with different repair rates rather than completely terminating the repair during a vacation period.
Wang, K.H.   +3 more
core   +2 more sources

ANFIS based Machine Repair Model with Control Policies and Working Vacation [PDF]

open access: yesInternational Journal of Mathematical, Engineering and Management Sciences, 2019
This study is concerned with the transient state analysis of M/M/1 machine repairable system consisting of M operating units. F-policy is quite useful to avoid the overloading of failed machines that arrive for repair in the system.
Rachita Sethi   +2 more
doaj   +1 more source

Equilibrium analysis of cloud user request based on the Markov queue with variable vacation and vacation interruption

open access: yes, 2021
This paper considers the equilibrium balking behavior of customers in a single-server Markovian queue with variable vacation and vacation interruption, where the server can switch across four states: vacation, working vacation, idle period, and busy ...
Xiuli Xu, Yitong Zhang
core   +1 more source

Tailored D‐π Conjugation Boosts Piezocatalytic CO2 Reduction in a Platinum(II)‐Acetylide Framework

open access: yesAdvanced Science, EarlyView.
The highly conjugated metalII‐acetylide framework demonstrates efficient ultrasound‐driven conversion of CO2 to CO. The piezoelectric field generated by ultrasound facilitates electron transfer from the tetraphenylene π‐column to the MII‐bis(acetylide) moiety, enabling CO2 activation. Compared to PdII‐ and NiII‐based analogues, the stronger d–π orbital
Mude Zhu   +6 more
wiley   +1 more source

A Ceramic Network for Hybrid Solid Electrolyte Lithium Metal Batteries

open access: yesAdvanced Science, EarlyView.
An in‐plane aligned Ta‐LLZO ceramic network exhibits superior performance compared to conventional fillers, including single ceramic fibers and particles. The tortuosity within the polymeric phase of hybrid solid electrolytes is identified as a key parameter governing lithium‐ion transport pathways and dendrite suppression.
Luca Weckelmann   +10 more
wiley   +1 more source

Working Girls Get Weekend Vacation

open access: yes, 1951
Video footage from the WBAP-TV television station in Fort Worth, Texas, to accompany a news story about a free vacation promotion offered to young working women by the Baker Hotel and Pioneer ...
WBAP-TV (Television station : Fort Worth, Tex.)
core  

Analysis of Single Server Markovian Queueing Model with Differentiated Working Vacation, Vacation Interruption, Soft Failure, Reneging of Customers

open access: yes
This article investigates the reneging of customers in M/M/1 model with differentiated working vacation, vacation interruption and soft failure. The customers come with rate λ and receives service during busy period with rate μ, where λ and μ obeys ...
Shrivastava, R. K., Rathore, Rachna
core   +1 more source

Home - About - Disclaimer - Privacy