Search results for "Principle"
showing 10 items of 1023 documents
The first excited singlet state of s‐tetrazine: A theoretical analysis of some outstanding questions
1996
The equation‐of‐motion coupled cluster method for excited electronic states (EOMEE‐CC) is applied to study the structure and selected properties of the first excited singlet state of s‐tetrazine. Adiabatic S1←S0 excitation energies obtained with large basis sets containing up to 270 functions are uniformly somewhat above the experimental 0–0 value of 2.238 eV, but nevertheless are the most accurate calculations reported to date for this quantity. The equilibrium geometry of S1 predicted in this study is in excellent agreement with another high‐level calculation, and moreover is quantitatively consistent with both the intensity of vibrational progressions observed in absorption and measured …
Size Dependence of Tracer Diffusion in Supercooled Liquids
1996
We have determined by forced Rayleigh scattering the diffusion coefficients D of several photochromic tracers with van der Waals radii between 0.38 and 8 nm (the largest ones being photolabeled polystyrene micronetworks) in 10 glass-forming liquids at temperatures between the glass temperature Tg and ∼1.2Tg. The results were analyzed in terms of power law plots, D(T) ∝ T/η(T)ξ, where η is the solvent shear viscosity, and temperature shifts, D(T) ∝ T/η(T + ΔT). The shift ΔT was related with the width of the rotational correlation time distribution via the time−temperature superposition principle.
The principles of bioethics and the growth of an intercultural bioethics
2010
En este trabajo defiendo que el debate internacional sobre los principios de la bioética es uno de los más fructíferos para construir los fundamentos de una bioética intercultural. Tras recordar en qué consisten los principios de la bioética, tal y como han sido defendidos por Tom L. Beauchamp y James F. Childress en Estados Unidos, ofrezco una breve mirada a estos principios desde Europa, América Latina, África y Asia. Continúo con una reflexión sobre dichos principios desde algunas de las grandes religiones del mundo. Todo ello me permite ofrecer importantes elementos para construir las bases de lo que podríamos llamar una «bioética intercultural». In this article, I defend that the inter…
On the measurement of bubble size distribution in gas–liquid contactors via light sheet and image analysis
2010
Abstract Particle image velocimetry techniques coupled with advanced image processing tools are receiving an increasing interest for measuring flow quantities and local bubble-size distributions in gas–liquid mechanically agitated vessels. When trying to analyze image information the problem arises that bubble sizes are generally underestimated, due to the fact that the laser sheet used for lighting the system randomly cuts bubbles over non-diametrical planes, leading to an apparent bubble size distribution even in the ideal case of single sized bubbles. Clearly in the case of bubbles with a size distribution the experimental information obtained is affected by the superposition of effects.…
La justicia tributaria en el ordenamiento plural
2016
La justicia ha sido objeto de estudio en las ciencias jurídicas desde sus comienzos. La mayoría de los ordenamientos han considerado, a lo largo de la historia, el valor superior de la justicia como uno de los fines del Derecho. Este principio y valor figura en la mayoría de las Cartas Magnas de los distintos Estados así como diversos tratados y convenio internacionales como la Declaración Universal de Derecho Humanos. Nuestra Constitución recoge en su preámbulo que la Nación Española desea establecer la justicia, la libertad y la seguridad y promover el bien de cuantos la integran, y su artículo 31 propone un sistema tributario justo como medio para sufragar los gastos públicos. Por lo que…
The Paradox of Effectiveness: Growth, Institutionalisation and Evaluation of Anti-Mafia Policies in Italy
2004
This contribution focuses on Italian policies that have been envisaged and implemented to combat, prevent or contain mafia-type organised crime.1 After having shown that a proper analysis of anti-mafia policies is strangely lacking (section 2), policies directly addressing the mafia are dealt with, hinting at the norms concerning specific criminal offences, vast investigatory powers and penetrating preventive measures, financial transactions and money laundering, collaborators of justice, the peculiarity of mafia trials, judicial attitudes and sanctions (section 3.1). Section 3.2 presents the wide variety of other policies addressing civil society and public administrations, and only indire…
Incremental linear model trees on massive datasets
2013
The existence of massive datasets raises the need for algorithms that make efficient use of resources like memory and computation time. Besides well-known approaches such as sampling, online algorithms are being recognized as good alternatives, as they often process datasets faster using much less memory. The important class of algorithms learning linear model trees online (incremental linear model trees or ILMTs in the following) offers interesting options for regression tasks in this sense. However, surprisingly little is known about their performance, as there exists no large-scale evaluation on massive stationary datasets under equal conditions. Therefore, this paper shows their applica…
A Proposal for an Automatic Stabilizer in Social Justice
2019
Abstract Generally, social justice has two sides which are intercorrelated and inter-dependend: a) constitutive social justice (for example, the so called commutative social justice); b) regulative social justice (for example, the so called distributive social justice). The paper approaches the regulative social justice, more exactly, an automatic mechanism to get it. To this end, an automatic stabilizer to provide distributive social justice, according to the Rawlsian principle of difference. Such an automatic stabilizer is grounded on the wealth, more precise, on the share of the wealth which is not invested in order to benefit to the more disadvantaged class of the society. Paper does no…
Knowledge Creation - A Perspective on the Development of Design Principles
2020
In this paper we reflect on and conceptualize on the development of design principles in a design process. We use the concept of ba to describe how design principles can be created when involving users, domain experts, designers and researchers in the design process. The study applies action design research (ADR) to design and develop a self-reflective career support tool for persons with intellectual disabilities (ID). We have applied processes of knowledge creation and their corresponding ba, the originating ba, the interacting ba, the systemizing ba and the exercising ba to conceptualize the development of design principles. Preliminary findings imply that a structured process of knowled…
Solutions of nonlinear PDEs in the sense of averages
2012
Abstract We characterize p-harmonic functions including p = 1 and p = ∞ by using mean value properties extending classical results of Privaloff from the linear case p = 2 to all pʼs. We describe a class of random tug-of-war games whose value functions approach p-harmonic functions as the step goes to zero for the full range 1 p ∞ .