On The Relationship Between Connectivity And The Continuum Approximation In Fracture-Flow And Transport Modelling

1994 ◽  
Vol 2 (3) ◽  
pp. 24-31 ◽  
Author(s):  
F. P. M. Guérin ◽  
D. M. Billaux
1987 ◽  
Vol 10 (3) ◽  
pp. 175-188 ◽  
Author(s):  
Edna Barenbaum ◽  
Phyllis Newcomer ◽  
Barbara Nodine

In this study of children's ability to write stories, written compositions were classified by means of a system consisting of the following categories: story, primitive story, action sequence, descriptive, and expressive. Three groups of children served as subjects: learning disabled, low achievers, and normal achievers in grades 3, 5 and 7. Findings permit conclusions pertaining to (a) the performance of the three ability groups; (b) the relationship between age / grade and writing ability; (c) the continuum of composition categories used; (d) composition consistency; and (e) effect of task on performance. Specifically, the percentages of the various composition categories varied according to subjects' age and learning capacity. Also, the structure of the writing tasks and the length of compositions produced by the subjects were found to relate to story category.


Author(s):  
С.Ш. Рехвиашвили ◽  
М.М. Бухурова

AbstractA theoretical model describing the stability of a carbon nano-onion in the presence of a bulk catalytic graphite phase is constructed based on the continuum approximation of interatomic interaction potential and mechanics of deformed systems. It is shown that a carbon nano-onion becomes unstable when its radius exceeds double value of the radius of a fullerene C_60 molecule.


2018 ◽  
Vol 45 (4) ◽  
pp. 614-628 ◽  
Author(s):  
Irene Daskalopoulou

Purpose The purpose of this paper is to investigate how different types of social capital contribute to the satisfaction with democracy (SWD) in Greece. Understanding the relationship between different variants of social capital and SWD allows one to situate the Greek democracy in the continuum of democracy types, from primary to modern. Design/methodology/approach The study uses microdata extracted from the European Values Surveys of 2002-2010 and multivariate regression analysis. Findings The results are compatible with a conception of the Greek political organization as a civil virtue democracy. A change in the nature of the relationship is observed after the recent economic crisis in the country. Research limitations/implications The study contributes to the empirical knowledge regarding the relationship between different variants of social capital and SWD. Originality/value Using a typology approach, the micro-relationship between democracy and social capital is analyzed as embedded in a continuum of different democracy types. In addition, this is the first study that uses microdata to analyze the effect of social capital upon SWD in Greece. The results of the study provide valuable understanding of the social and institutional arrangements that might sustain Greece’s efforts to meet its overall developmental challenges.


2019 ◽  
Vol 88 (4) ◽  
pp. 925-952 ◽  
Author(s):  
R. J. W. Mills

This article surveys the emergence and usage of the redefinition of man not as animal rationale (rational animal) but as animal religiosum (religious animal) by numerous English theologians between 1650 and 1700. Across the continuum of English Protestant thought, human nature was being redescribed as unique due to its religious, not primarily its rational, capabilities. This article charts said appearance as a contribution to debates over man's relationship with God; then its subsequent incorporation into the discussion over the theological consequences of arguments in favor of animal rationality, as well as its uses in anti-atheist apologetics; and then the sudden disappearance of the definition of man as animal religiosum at the beginning of the eighteenth century. In doing so, the article hopes to make a useful contribution to our understanding of changing early modern understandings of human nature by reasserting the significance of theological writing in the dispute over the relationship between humans and beasts. As a consequence, it offers a more wide-ranging account of man as animal religiosum than the current focus on “Cambridge Platonism” and “Latitudinarianism” allows.


2019 ◽  
Vol 75 (9) ◽  
pp. 1894-1904 ◽  
Author(s):  
Joshua T Fuller ◽  
Tabina K Choudhury ◽  
Deborah A Lowe ◽  
Steve Balsis ◽  

AbstractObjectivesNeuropsychiatric symptoms (NPS) are common among individuals with dementia of the Alzheimer’s type (DAT). We sought to characterize which NPS more purely relate to cognitive dysfunction in DAT, relative to other NPS.MethodDemographic, neurocognitive, neuroimaging, and NPS data were mined from the Alzheimer’s Disease Neuroimaging Initiative database (n = 906). Using factor analysis, we analyzed the degree to which individual NPS were associated with DAT-associated cognitive dysfunction. We also employed item response theory to graphically depict the ability of individual NPS to index DAT-associated cognitive dysfunction across a continuum ranging from cognitively normal to mild DAT.ResultsPsychotic symptoms (hallucinations and delusions) were more strongly related to the continuum of DAT-associated cognitive dysfunction than other NPS, with the strength of the relationship peaking at high levels of disease severity. Psychotic symptoms also negatively correlated with brain volume and did not relate to the presence of vision problems. Aberrant motor behavior and apathy had relatively smaller associations with DAT-associated cognitive dysfunction, while other NPS showed minimal associations.DiscussionPsychotic symptoms most strongly indexed DAT-associated cognitive dysfunction, whereas other NPS, such as depression and anxiety, were not as precisely related to the DAT-associated cognitive dysfunction.


1984 ◽  
Vol 29 (4) ◽  
pp. 2017-2020 ◽  
Author(s):  
R. Ball ◽  
M. Nauenberg ◽  
T. A. Witten

2019 ◽  
Vol 9 (11) ◽  
pp. 2301 ◽  
Author(s):  
Pakhapoom Sarapat ◽  
James Hill ◽  
Duangkamon Baowan

After the discovery of circular formations of single walled carbon nanotubes called fullerene crop circles, their structure has become one of the most researched amongst carbon nanostructures due to their particular interesting physical properties. Several experiments and simulations have been conducted to understand these intriguing objects, including their formation and their hidden characteristics. It is scientifically conceivable that these crop circles, nowadays referred to as carbon nanotori, can be formed by experimentally bending carbon nanotubes into ring shaped structures or by connecting several sections of carbon nanotubes. Toroidal carbon nanotubes are likely to have many applications, especially in electricity and magnetism. In this review, geometry, construction, modelling and possible applications are discussed and the existing known analytical expressions, as obtained from the Lennard-Jones potential and the continuum approximation, for their interaction energies with other nanostructures are summarised.


2019 ◽  
Vol 631 ◽  
pp. A64 ◽  
Author(s):  
Per Bjerkeli ◽  
Jon P. Ramsey ◽  
Daniel Harsono ◽  
Hannah Calcutt ◽  
Lars E. Kristensen ◽  
...  

Context. The relationship between outflow launching and the formation of accretion disks around young stellar objects is still not entirely understood, which is why spectrally and spatially resolved observations are needed. Recently, the Atacama Large Millimetre/sub-millimetre Array (ALMA) carried out long-baseline observations towards a handful of young sources, revealing connections between outflows and the inner regions of disks. Aims. Here we aim to determine the small-scale kinematical and morphological properties of the outflow from the isolated protostar B335 for which no Keplerian disk has, so far, been observed on scales down to 10 au. Methods. We used ALMA in its longest-baseline configuration to observe emission from CO isotopologues, SiO, SO2, and CH3OH. The proximity of B335 provides a resolution of ~3 au (0.03′′). We also combined our long-baseline data with archival observations to produce a high-fidelity image covering scales up to 700 au (7′′). Results. 12CO has an X-shaped morphology with arms ~50 au in width that we associate with the walls of an outflow cavity, similar to what is observed on larger scales. Long-baseline continuum emission is confined to <7 au from the protostar, while short-baseline continuum emission follows the 12CO outflow and cavity walls. Methanol is detected within ~30 au of the protostar. SiO is also detected in the vicinity of the protostar, but extended along the outflow. Conclusions. The 12CO outflow does not show any clear signs of rotation at distances ≳30 au from the protostar. SiO traces the protostellar jet on small scales, but without obvious rotation. CH3OH and SO2 trace a region <16 au in diameter, centred on the continuum peak, which is clearly rotating. Using episodic, high-velocity, 12CO features, we estimate the launching radius of the outflow to be <0.1 au and dynamical timescales of the order of a few years.


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