Calibration sets and the accuracy of vibrational scaling factors: A case study with the X3LYP hybrid functional

2010 ◽  
Vol 133 (11) ◽  
pp. 114109 ◽  
Author(s):  
Filipe Teixeira ◽  
André Melo ◽  
M. Natália D. S. Cordeiro
Keyword(s):  
Hybrid Functional ◽  
Scaling Factors ◽  
Calibration Sets

The Meaning of Airspace Sovereignty Today – A Case Study on Demilitarisation and Functional Airspace Blocks

2017 ◽  
Vol 86 (1) ◽  
pp. 91-117
Author(s):  
Sia Spiliopoulou Åkermark
Keyword(s):  
International Cooperation ◽  
Hybrid Mode ◽  
Hybrid Functional ◽  
International Enterprise ◽  
The North ◽  
Legal Obligations ◽  
Democratic Control ◽  
Regional Agreements

As a result of the eu Single European Sky directives, European states adopted regional agreements on functional airspace blocks. The Agreement on the North European Functional Airspace Block (nefab) was signed in 2012 by Estonia, Finland, Latvia and Norway. The nature of the agreement is mixed and involves civil as well as military actors. nefab seems to operate in practice in a hybrid mode, sometimes looking like a private international enterprise and sometimes more like a public international organisation. Does the highly technical nature of the agreement keep issues of political and legal relevance outside the range of democratic control? To what extent can such hybrid, functional, technical regimes of international cooperation affect the understandings and the exercise of sovereignty, and what is the effect of the NEFAB-regime on older legal obligations such as the demilitarisation and neutralisation regime of the Åland Islands?

The impact of variation in scaling factors on the estimation of internal dose metrics: a case study using bromodichloromethane (BDCM)

2016 ◽  
Vol 26 (8) ◽  
pp. 620-626 ◽  
Author(s):  
Elaina M. Kenyon ◽  
Christopher Eklund ◽  
John C. Lipscomb ◽  
Rex A. Pegram
Keyword(s):  
Internal Dose ◽  
Scaling Factors ◽  
Dose Metrics ◽  
The Impact

scholarly journals Critical scales to explain urban hydrological response: an application in Cranbrook, London

2018 ◽  
Vol 22 (4) ◽  
pp. 2425-2447 ◽  
Author(s):  
Elena Cristiano ◽  
Marie-Claire ten Veldhuis ◽  
Santiago Gaitan ◽  
Susana Ochoa Rodriguez ◽  
Nick van de Giesen
Keyword(s):  
Urban Areas ◽  
Rainfall Variability ◽  
Model Complexity ◽  
Hydrological Response ◽  
Catchment Scale ◽  
Scaling Factors ◽  
Rainfall Events ◽  
Space And Time ◽  
X Band

Abstract. Rainfall variability in space and time, in relation to catchment characteristics and model complexity, plays an important role in explaining the sensitivity of hydrological response in urban areas. In this work we present a new approach to classify rainfall variability in space and time and we use this classification to investigate rainfall aggregation effects on urban hydrological response. Nine rainfall events, measured with a dual polarimetric X-Band radar instrument at the CAESAR site (Cabauw Experimental Site for Atmospheric Research, NL), were aggregated in time and space in order to obtain different resolution combinations. The aim of this work was to investigate the influence that rainfall and catchment scales have on hydrological response in urban areas. Three dimensionless scaling factors were introduced to investigate the interactions between rainfall and catchment scale and rainfall input resolution in relation to the performance of the model. Results showed that (1) rainfall classification based on cluster identification well represents the storm core, (2) aggregation effects are stronger for rainfall than flow, (3) model complexity does not have a strong influence compared to catchment and rainfall scales for this case study, and (4) scaling factors allow the adequate rainfall resolution to be selected to obtain a given level of accuracy in the calculation of hydrological response.

Ab-Initio Modeling of the Resistance Switching Mechanism in RRAM Devices: Case Study of Hafnium Oxide (HfO2)

2012 ◽  
Vol 1430 ◽  
Author(s):  
Dan Duncan ◽  
Blanka Magyari-Kope ◽  
Yoshio Nishi
Keyword(s):  
Density Functional Theory ◽  
Ab Initio ◽  
Hafnium Oxide ◽  
Density Functional ◽  
Hybrid Functional ◽  
Functional Theory ◽  
Electronic Interactions ◽  
Hybrid Functionals ◽  
Electronic And Structural Properties

ABSTRACTThe structures and energies of stoichiometric and oxygen-deficient monoclinic HfO2 were calculated using density functional theory. The electronic interactions in HfO2 were calculated using the LDA+U and GGA+U formalisms, where on-site Coulomb corrections were applied to the 5d electrons of hafnium (Ud) and the 2p electrons of oxygen (Up). Properties calculated using these techniques are compared to results obtained from LDA, GGA, hybrid functionals, and experiment. Ultimately, we show that LDA+Ud+Up and GGA+Ud+Up calculations of HfO2’s electronic and structural properties achieve a level of accuracy on par with much more computationally demanding hybrid functional techniques, such as PBE0 and HSE06.

The Genesis and Internal Dynamics of El Salvador's People's Revolutionary Army, 1970–1976

2014 ◽  
Vol 38 (01) ◽  
pp. 102-129
Author(s):  
ALBERTO MARTÍN ÁLVAREZ ◽  
EUDALD CORTINA ORERO
Keyword(s):  
Latin America ◽  
El Salvador ◽  
Early Years ◽  
Left Wing ◽  
Internal Dynamics ◽  
Internal Coherence ◽  
The 1960S

AbstractUsing interviews with former militants and previously unpublished documents, this article traces the genesis and internal dynamics of the Ejército Revolucionario del Pueblo (People's Revolutionary Army, ERP) in El Salvador during the early years of its existence (1970–6). This period was marked by the inability of the ERP to maintain internal coherence or any consensus on revolutionary strategy, which led to a series of splits and internal fights over control of the organisation. The evidence marshalled in this case study sheds new light on the origins of the armed Salvadorean Left and thus contributes to a wider understanding of the processes of formation and internal dynamics of armed left-wing groups that emerged from the 1960s onwards in Latin America.

Culture and the plasticity of perception

2020 ◽  
Vol 43 ◽  
Author(s):  
Michael Lifshitz ◽  
T. M. Luhrmann
Keyword(s):  
Cultural Context ◽  
Sensory Experience ◽  
Cultural Learning ◽  
The World

Abstract Culture shapes our basic sensory experience of the world. This is particularly striking in the study of religion and psychosis, where we and others have shown that cultural context determines both the structure and content of hallucination-like events. The cultural shaping of hallucinations may provide a rich case-study for linking cultural learning with emerging prediction-based models of perception.

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