Search results for "NUMBER"

Structural and dynamical properties of sodium silicate melts: An investigation by molecular dynamics computer simulation

2001

We present the results of large scale computer simulations in which we investigate the static and dynamic properties of sodium disilicate and sodium trisilicate melts. We study in detail the static properties of these systems, namely the coordination numbers, the temperature dependence of the Q^(n) species and the static structure factor, and compare them with experiments. We show that the structure is described by a partially destroyed tetrahedral SiO_4 network and the homogeneously distributed sodium atoms which are surrounded on average by 16 silicon and other sodium atoms as nearest neighbors. We compare the diffusion of the ions in the sodium silicate systems with that in pure silica a…

Sequent Depth Ratio of a B-Jump

2011

A B-jump is defined as the jump having the toe section located on a positively sloping upstream channel and the roller end on a downstream horizontal channel. This jump often occurs in the stilling basins with a horizontal bottom and located downstream of a steep channel. For a B-jump, a completely theoretical approach is not sufficient to solve the momentum equation and to establish the sequent depth ratio. In this paper, by using the laboratory measurements carried out in this investigation, some available empirical relationships useful for estimating the sequent depth ratio are tested. Then, by using the Π theorem of the dimensional analysis and the incomplete self-similarity theory, a g…

Fuzzy filter design for discrete-time delayed systems with distributed probabilistic sensor faults

2013

In this paper, the problem of distributed fuzzy filter design has been solved for T-S fuzzy systems with time-varying delays and multiple probabilistic packet losses. Our attention is paid to designing the distributed fuzzy filters to guarantee the filtering error dynamic system to be mean-square asymptotically stable with an average ℋ∞ performance. Sufficient conditions for the obtained filtering error dynamic system are proposed by applying a comparison model and the scaled small gain theorem. Based on the measurements and estimates of the system states for each sensor and its neighbors, the solution of the parameters of the distributed fuzzy filters is characterized in terms of the feasi…

Test module filtrations for unit $F$-modules

2015

We extend the notion of test module filtration introduced by Blickle for Cartier modules. We then show that this naturally defines a filtration on unit $F$-modules and prove that this filtration coincides with the notion of $V$-filtration introduced by Stadnik in the cases where he proved existence of his filtration. We also show that these filtrations do not coincide in general. Moreover, we show that for a smooth morphism $f: X \to Y$ test modules are preserved under $f^!$. We also give examples to show that this is not the case if $f$ is finite flat and tamely ramified along a smooth divisor.

A criterion for extending morphisms from open subsets of smooth fibrations of algebraic varieties

2021

Abstract Given a smooth morphism Y → S and a proper morphism P → S of algebraic varieties we give a sufficient condition for extending an S-morphism U → P , where U is an open subset of Y, to an S-morphism Y → P , analogous to Zariski's main theorem.

Boundedness and spectral invariance for standard pseudodifferential operators on anisotropically weighted LP-Sobolev spaces

1990

It is shown that pseudodifferential operators with symbols in the standard classes S ρ,δ m (ℝn) define bounded maps between large classes of weighted LP-Sobolev spaces where the growth of the weight does not have to be isotropic. Moreover, the spectrum is independent of the choice of the space.

Too special to be duped: Need for uniqueness motivates conspiracy beliefs

2017

Adding to the growing literature on the antecedents of conspiracy beliefs, this paper argues that a small part in motivating the endorsement of such seemingly irrational beliefs is the desire to stick out from the crowd, the need for uniqueness. Across three studies, we establish a modest but robust association between the self-attributed need for uniqueness and a general conspirational mindset (conspiracy mentality) as well as the endorsement of specific conspiracy beliefs. Following up on previous findings that people high in need for uniqueness resist majority and yield to minority influence, Study 3 experimentally shows that a fictitious conspiracy theory received more support by people…

Individual variance in responsiveness to early computerized mathematics intervention

2015

Abstract We examined the effects of short, intensive computerized intervention in early number skills for kindergarteners with poor addition skills (below 1.5 SD ). The mathematical content of the software was hierarchically organized, starting from one-to-one correspondence, comparing and ordering, and proceeding via number concept and counting to basic addition. The results showed positive within-group effects for basic addition (Wilcoxon ES ( r ) = .59), verbal counting (.56), and the Number Sets Test (.45; see Geary, Bailey, & Hoard, 2009 ). The effects remained stable over a 9-week follow-up period. However, there was no significant between-group difference in terms of gain scores as c…

La prestación de maternidad en los supuestos de gestación subrogada

2018

Surrogate pregnancy, as a technique of assisted reproduction prohibited by Spanish law, raises a number of legal questions than, in certain cases, trascend of the Civil Law. Specifically, it has been discussed about de possibility that de person or persons consigner in the gestation contract substitution have access to the provision for maternity benefit. Recently, the Spanish Supreme Court has responded to this issue in the sense of recognizing the right to the provision for maternity benefit to the father or mother ?in fact?, efecttively, develop own parental powers.

Distribution of Power in The 1960s

1972