Results 71 to 80 of about 8,071,777 (301)

Optimal Sizing of a Photovoltaic-Thermal Hybrid System using Energy Ratio

open access: yesChemical Engineering Transactions, 2015
A photovoltaic-thermal hybrid system (PVT) is a renewable energy based cogeneration system as it simultaneously converts solar radiation to electricity and low temperature heat.
M.S. Thakare   +2 more
doaj   +1 more source

Phase Changes in an Inelastic Hard Disk System with a Heat Bath under Weak Gravity for Granular Fluidization

open access: yes, 1999
We performed numerical simulations on a two-dimensional inelastic hard disk system under gravity with a heat bath to study the dynamics of granular fluidization.
Aoki K. M.   +27 more
core   +1 more source

Spacing ratios in mixed-type systems

open access: yesPhysical Review E
The distribution of the consecutive level-spacing ratio is now widely used as a tool to distinguish integrable from chaotic quantum spectra, mostly due to its avoidance of the numerical spectral unfolding. Like the use of the Rosenzweig-Porter approach to obtain the Berry-Robnik distribution of level spacings in mixed-type systems, in this paper, we ...
openaire   +4 more sources

Revealing the structure of land plant photosystem II: the journey from negative‐stain EM to cryo‐EM

open access: yesFEBS Letters, EarlyView.
Advances in cryo‐EM have revealed the detailed structure of Photosystem II, a key protein complex driving photosynthesis. This review traces the journey from early low‐resolution images to high‐resolution models, highlighting how these discoveries deepen our understanding of light harvesting and energy conversion in plants.
Roman Kouřil
wiley   +1 more source

General Properties of Contact Binary System for Mass Ratio Distribution [PDF]

open access: yesJournal of Astronomy and Space Sciences, 1999
With a total 761 contact binary systems in Svechnikov & Kuznetsova(1990)'s cat- alogue, their physical properties by the mass ratio are inverstigated - for the early CE type with a common radiative envelope and the late CW type with a common convective ...
Kyu-Dong Oh
doaj  

Feedback Reliability Ratio of an Intrusion Detection System

open access: yesJournal of Information Security, 2012
The behavior and nature of attacks and threats to computer network systems have been evolving rapidly with the advances in computer security technology. At the same time however, computer criminals and other malicious elements find ways and methods to thwart such protective measures and find techniques of penetrating such secure systems.
Usha Banerjee, Gaurav Batra, K. V. Arya
openaire   +2 more sources

Universal amplitude ratios for constrained critical systems [PDF]

open access: yesJournal of Statistical Mechanics: Theory and Experiment, 2014
JSTAT published ...
N Sh Izmailian, R Kenna
openaire   +3 more sources

Enteropathogenic E. coli shows delayed attachment and host response in human jejunum organoid‐derived monolayers compared to HeLa cells

open access: yesFEBS Letters, EarlyView.
Enteropathogenic E. coli (EPEC) infects the human intestinal epithelium, resulting in severe illness and diarrhoea. In this study, we compared the infection of cancer‐derived cell lines with human organoid‐derived models of the small intestine. We observed a delayed in attachment, inflammation and cell death on primary cells, indicating that host ...
Mastura Neyazi   +5 more
wiley   +1 more source

Elastic properties of isotropic discrete systems with skew contact normals [PDF]

open access: yes, 2019
The macroscopic elastic properties of discrete assemblies are fundamental characteristics of such systems. The contribution uses homogenization procedure based on equivalence of virtual work between the isotropic elastic continuum and the discrete system
Eliás, Jan
core  

Likelihood Ratio Derivative Estimators For Stochastic Systems [PDF]

open access: yes1989 Winter Simulation Conference Proceedings, 1989
This paper discusses Iikelihood--ratio--derivative estimation techniques for stochastic systems. After a brief review of the basic concepts, likelihood-ratio-derivative estimators are presented for the following classes of stochastic processes: time homogeneous discrete-time Markov chains, non-time-homogeneous discrete-time Markov chains, time ...
openaire   +1 more source

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