Results 21 to 30 of about 105,025 (313)

Speed limit for open systems coupled to general environments

open access: yesPhysical Review Research, 2021
We investigate the bound on the speed of state transformation in the quantum systems that are coupled to general environments. We focus on the energy fluctuation of the target system and the coupling to the environment, and clarify the universal ...
Naoto Shiraishi, Keiji Saito
doaj   +1 more source

The Two Variable Per Inequality Abstract Domain [PDF]

open access: yes, 2010
This article presents the Two Variable Per Inequality abstract domain (TVPI domain for short). This so-called weakly-relational domain is able to express systems of linear inequalities where each inequality has at most two variables.
Howe, Jacob M., Simon, Axel, King, Andy
core   +1 more source

Entanglement polygon inequality in qubit systems

open access: yesNew Journal of Physics, 2018
We prove a set of tight entanglement inequalities for arbitrary N -qubit pure states. By focusing on all bi-partite marginal entanglements between each single qubit and its remaining partners, we show that the inequalities provide an upper bound for each
Xiao-Feng Qian   +2 more
doaj   +1 more source

National health inequality monitoring: current challenges and opportunities

open access: yesGlobal Health Action, 2018
National health inequality monitoring needs considerably more investment to realize equity-oriented health improvements in countries, including advancement towards the Sustainable Development Goals.
Ahmad Reza Hosseinpoor   +3 more
doaj   +1 more source

Disentangling the effects of environmental and communities’ factors on species’ biomass inequality in Qinghai-Tibetan grassland systems

open access: yesEcological Indicators, 2021
Plant biomass (size) inequality among and within species is central to maintenance of species diversity. Understanding its role in community dynamic and variation with environments in stressful alpine systems where plant communities are structured by a ...
Wei Qi   +4 more
doaj   +1 more source

Solvability Criteria for Some Set-Valued Inequality Systems

open access: yesJournal of Inequalities and Applications, 2010
Arising from studying some multivalued von Neumann model, three set-valued inequality systems are introduced, and two solvability questions are considered.
Liu Yingfan
doaj   +2 more sources

Refined Wirtinger-type integral inequality

open access: yesJournal of Inequalities and Applications, 2018
Based on the extreme value conditions of a multiple variables function, a new class of Wirtinger-type double integral inequality is established in this paper.
Liansheng Zhang, Shuxia Wang
doaj   +1 more source

Innovation Systems and Income Inequality: In Search of Causal Mechanisms

open access: yes, 2021
How does innovation as a collective (multi-actor) activity shape the distribution of income in contemporary societies? To address this largely under-researched, and thus also under-theorised, question, the present paper develops a novel conceptual model ...
Fragkandreas, T.
core  

Enhanced Stability Criteria of Network-Based Load Frequency Control of Power Systems with Time-Varying Delays

open access: yesEnergies, 2021
The stability problem for load frequency control (LFC) of power systems with two time-varying communication delays is studied in this paper. The one-area and two-area LFC systems are considered, respectively, which are modeled as corresponding linear ...
Wenxi Feng   +4 more
doaj   +1 more source

Gut microbiome is not associated with mild cognitive impairment in Parkinson’s disease

open access: yesnpj Parkinson's Disease
Gut microbiome differences between people with Parkinson’s disease (PD) and control subjects without Parkinsonism are widely reported, but potential alterations related to PD with mild cognitive impairment (MCI) have yet to be comprehensively explored ...
Velma T. E. Aho   +9 more
doaj   +1 more source

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