716 research outputs found
Domains via approximation operators
In this paper, we tailor-make new approximation operators inspired by rough
set theory and specially suited for domain theory. Our approximation operators
offer a fresh perspective to existing concepts and results in domain theory,
but also reveal ways to establishing novel domain-theoretic results. For
instance, (1) the well-known interpolation property of the way-below relation
on a continuous poset is equivalent to the idempotence of a certain
set-operator; (2) the continuity of a poset can be characterized by the
coincidence of the Scott closure operator and the upper approximation operator
induced by the way below relation; (3) meet-continuity can be established from
a certain property of the topological closure operator. Additionally, we show
how, to each approximating relation, an associated order-compatible topology
can be defined in such a way that for the case of a continuous poset the
topology associated to the way-below relation is exactly the Scott topology. A
preliminary investigation is carried out on this new topology.Comment: 17 pages; 1figure, Domains XII Worksho
DETERMINANTS OF TURNOVER INTENTIONS AMONG CHINESE OFF FARM MIGRANTS
This study examines the determinants of turnover intentions of off farm migrant workers, using data collected from China's Jiangsu Province. Turnover intention is posited to be a function of demographic/human capital characteristics, job characteristics and job satisfaction. We find that higher levels of education have a positive effect on reported turnover intentions, while higher income and job satisfaction have a negative effect on turnover intentions. As turnover intentions represent a good proxy for actual turnover, the results can be viewed as providing reliable predictors of job mobility among off farm migrant workers at a time when there is a growing shortage of such workers in China's coastal provinces.
The -space
In this paper, we introduce the concept of -spaces. We find that
strong -spaces are -spaces, but the converse does not hold. We
give a characterization for a topological space to be a -space. We
prove that the retract of a -space is a -space. We obtain
the result that for any space and , if the function space
endowed with the Isbell topology is a -space, then is
a -space. We also show that for any space , if the Smyth
power space is a -space, then is a -space.
Meanwhile, we give a counterexample to illustrate that conversely, for a
-space , the Smyth power space may not be a
-space
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