475 research outputs found
The Anatomy of Subjective Well-Being
Subjective Well-Being has increasingly been studied by several economists. This paper fits in that literature but takes into account that there are different aspects of life such as health, financial situation, and job. We call them domains. In this paper, we consider Subjective Well-Being as a composite of various domain satisfactions (DS). We postulate a two -layer model where individual Subjective Well-Being is explained by individual subjective domain satisfactions with respect to job, finance, health, leisure, housing, and environment. We distinguish between long -term and short - term effects. Next, we explain domain satisfactions and Subjective Well-Being by objectively measurable variables such as income. We estimate a model for the GS and DS equations with individual random effects and fix time effects.Subjective Well-Being, satisfaction measurement, qualitative regressors, health satisfaction, job satisfaction
Efficient inverted tandem polymer solar cells with a solution-processed recombination layer
Solution-processed tandem polymer solar cells with an inverted polarity configuration provide a power conversion efficiency of 5.8%. The tandem cells use an almost loss-free recombination layer and two photoactive layers, with wide and small bandgaps, to increase the power conversion efficiency beyond that of the corresponding single-layer cells
CoPub update: CoPub 5.0 a text mining system to answer biological questions
In this article, we present CoPub 5.0, a publicly available text mining system, which uses Medline abstracts to calculate robust statistics for keyword co-occurrences. CoPub was initially developed for the analysis of microarray data, but we broadened the scope by implementing new technology and new thesauri. In CoPub 5.0, we integrated existing CoPub technology with new features, and provided a new advanced interface, which can be used to answer a variety of biological questions. CoPub 5.0 allows searching for keywords of interest and its relations to curated thesauri and provides highlighting and sorting mechanisms, using its statistics, to retrieve the most important abstracts in which the terms co-occur. It also provides a way to search for indirect relations between genes, drugs, pathways and diseases, following an ABC principle, in which A and C have no direct connection but are connected via shared B intermediates. With CoPub 5.0, it is possible to create, annotate and analyze networks using the layout and highlight options of Cytoscape web, allowing for literature based systems biology. Finally, operations of the CoPub 5.0 Web service enable to implement the CoPub technology in bioinformatics workflows. CoPub 5.0 can be accessed through the CoPub portal http://www.copub.org
LB3D: A Parallel Implementation of the Lattice-Boltzmann Method for Simulation of Interacting Amphiphilic Fluids
We introduce the lattice-Boltzmann code LB3D, version 7.1. Building on a parallel program and supporting tools which have enabled research utilising high performance computing resources for nearly two decades, LB3D version 7 provides a subset of the research code functionality as an open source project. Here, we describe the theoretical basis of the algorithm as well as computational aspects of the implementation. The software package is validated against simulations of meso-phases resulting from self-assembly in ternary fluid mixtures comprising immiscible and amphiphilic components such as waterâoilâsurfactant systems. The impact of the surfactant species on the dynamics of spinodal decomposition are tested and quantitative measurement of the permeability of a body centred cubic (BCC) model porous medium for a simple binary mixture is described. Single-core performance and scaling behaviour of the code are reported for simulations on current supercomputer architectures
The Emerging Aversion to Inequality: Evidence from Poland 1992-2005
This paper provides an illustration of the changing tolerance for inequality in a context of radical political and economic transformation and rapid economic growth. We focus on the Polish experience of transition and explore self-declared attitudes of the citizens. Using monthly representative surveys of the population, realized by the Polish poll institute (CBOS) from 1992 to 2005, we identify a structural break in the relation between income inequality and subjective evaluation of well-being. The downturn in the tolerance for inequality (1997) coincides with the increasing distrust of political elites.http://deepblue.lib.umich.edu/bitstream/2027.42/64387/1/wp919.pd
Parallelised HoshenâKopelman algorithm for lattice-Boltzmann simulations
We discuss two topics that we have encountered in our lattice-Boltzmann
simulations of complex fluids: the sizes of droplets in particle-stabilised
emulsions and deformable particles in fluid flow. The common factor in these
seemingly disparate subjects is that both represent an opportunity for a novel
application of the Hoshen-Kopelman algorithm. This algorithm is based on
detecting connected clusters on a lattice and labelling the involved lattice
sites such that all sites that are connected share the same label. The
assumption of the presence of a lattice makes it a convenient algorithm to use
in combination with lattice-Boltzmann simulations. In order to apply this
algorithm on the fly during massively parallel simulations, it needs to be
parallelised as well. We present our parallel implementation, which is tailored
to a common parallelisation scheme for the lattice-Boltzmann method, and
compare it to previous work. We then briefly discuss some examples of results
obtained using this procedure.Comment: 11 pages, 7 figure
Lattice Boltzmann simulations of anisotropic particles at liquid interfaces
Complex colloidal fluids, such as emulsions stabilized by complex shaped
particles, play an important role in many industrial applications. However,
understanding their physics requires a study at sufficiently large length
scales while still resolving the microscopic structure of a large number of
particles and of the local hydrodynamics. Due to its high degree of locality,
the lattice Boltzmann method, when combined with a molecular dynamics solver
and parallelized on modern supercomputers, provides a tool that allows such
studies. Still, running simulations on hundreds of thousands of cores is not
trivial. We report on our practical experiences when employing large fractions
of an IBM Blue Gene/P system for our simulations. Then, we extend our model for
spherical particles in multicomponent flows to anisotropic ellipsoidal objects
rendering the shape of e.g. clay particles. The model is applied to a number of
test cases including the adsorption of single particles at fluid interfaces and
the formation and stabilization of Pickering emulsions or bijels.Comment: 10 pages, 5 figures; ParCFD 2011 proceedings contributio
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