Results 21 to 30 of about 60,108 (204)

At scale, renewable natural gas systems could be climate intensive: the influence of methane feedstock and leakage rates

open access: yesEnvironmental Research Letters, 2020
Renewable natural gas (RNG) is a fuel comprised of essentially pure methane, usually derived from climate-neutral (e.g. biogenic or captured) carbon dioxide (CO _2 ).
Emily Grubert
doaj   +1 more source

Optimal design of an indoor environment using an adjoint RNG k-ε turbulence model [PDF]

open access: yesE3S Web of Conferences, 2019
The computational fluid dynamics (CFD)-based adjoint method can determine design variables of an indoor environment according to the optimal design objective, such as minimal predicted mean vote (PMV) for thermal comfort.
Zhao Xingwang, Chen Qingyan
doaj   +1 more source

Quantum RNG Integration in an NG-PON2 Transceiver [PDF]

open access: yesOptical Fiber Communication Conference (OFC) 2021, 2021
We propose a minimally invasive optical overlay for time-interleaved QRNG operation in NG-PON2 transceivers. We experimentally demonstrate that random numbers can be generated at a 0.5 Gb/s rate and validate the randomness through statistical tests.
Vokić, Nemanja   +5 more
openaire   +2 more sources

Numerical Simulation Results of Hydraulic Jump in Different Conditions of Roughness, Adverse Slope, and Positive Step [PDF]

open access: yesعلوم آب و خاک, 2023
Hydraulic jump is used for dissipation of kinetic energy downstream of hydraulic structures such as spillways, chutes, and gates. In the present study, the experimental measurements and numerical simulation of the free hydraulic jump by applying Flow-3D ...
N. Pourabdollah   +2 more
doaj  

An architecturally constrained model of random number generation and its application to modeling the effect of generation rate [PDF]

open access: yes, 2014
Random number generation (RNG) is a complex cognitive task for human subjects, requiring deliberative control to avoid production of habitual, stereotyped sequences. Under various manipulations (e.g., speeded responding, transcranial magnetic stimulation,
Anderson   +42 more
core   +2 more sources

From war to peace. The contribution of military corps with police functions: the GNR in Iraq [PDF]

open access: yesJanus.net, 2014
The nature of conflict is changing. The occurrences of formal international intervention, in a complex theater of operations with operational requirements, necessitate the engagement of international forces with military and civilian capabilities, namely
Pedro Miguel Duarte da Graça
doaj  

Conjoint Analysis of GPS Based Orbit Determination among Traditional Methods

open access: yesSakarya University Journal of Computer and Information Sciences, 2023
Satellite orbits are subject to change due to external forces. Various data gathering and processing methods exist to determine a perturbed orbit. The operators need to estimate satellite orbits for safe orbital operations.
Cevat Özarpa, İbrahim Öz
doaj   +1 more source

An Experimental and Numerical Investigation for Characteristics of Submerged Hydraulic Jump over Corrugated Beds [PDF]

open access: yesPort Said Engineering Research Journal, 2020
The present study was executed to compare flow parameters of submerged jump under gate using physical and numerical models. Twenty experimental runs were carried out to study the impact of spaced corrugated beds on basic characteristics of submerged ...
Hossam Ali, Ashraf Elhamaimi
doaj   +1 more source

RandseqR: An R Package for Describing Performance on the Random Number Generation Task

open access: yesFrontiers in Psychology, 2021
The Random Number Generation (RNG) task has a long history in neuropsychology as an assessment procedure for executive functioning. In recent years, understanding of human (executive) behavior has gradually changed from reflecting a static to a dynamic ...
Wouter Oomens   +6 more
doaj   +1 more source

CFD Investigation of Flow Over a Backward-facing Step using an RNG k-? Turbulence Model

open access: yesInternational Journal of Technology, 2019
Backward-facing step (BFS) is a benchmarked geometry for visualizing recirculation flow and validating turbulence models. Nowadays, numerical analysis with the CFD method has became more popular and has stimulated research involving CFD without ...
Steven Darmawan, Harto Tanujaya
doaj   +1 more source

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