495 research outputs found
European integration at the crossroads: Democratic deepening for stability, solidarity and social justice. EuroMemorandum 2012
The euro area crisis threatens the future of European integration, but instead of challenging the
power of the financial institutions which are driving the crisis, the European authorities have imposed
austerity programmes on Greece and other peripheral euro area countries, and developed
centralised policies for imposing highly restrictive fiscal discipline on all member states which risk
undermining the democratic legitimacy of the European Union (EU)
Perfectionism, achievement motives, and attribution of success and failure in female soccer players
While some researchers have identified adaptive perfectionism as a key characteristic to achieving elite performance in sport, others see perfectionism as a maladaptive characteristic that undermines, rather than helps, athletic performance. Arguing that perfectionism in sport contains both adaptive and maladaptive facets, the present article presents a study of N 5 74 female soccer players investigating how two facets of perfectionism—perfectionistic strivings and negative reactions to imperfection (Stoeber, Otto, Pescheck, Becker, & Stoll, 2007)—are related to achievement motives and attributions of success and failure. Results show that striving for perfection was related to hope of success and self-serving attributions (internal attribution of success). Moreover, once overlap between the two facets of perfectionism was controlled for, striving for perfection was inversely related to fear of failure and self-depreciating attributions (internal attribution of failure). In contrast,
negative reactions to imperfection were positively related to fear of failure and self-depreciating attributions (external attribution of success) and inversely related to self-serving attributions (internal attribution of success and external attribution of failure). It is concluded that striving for perfection in sport is associated with an adaptive pattern of positive motivational orientations and self-serving attributions of success and failure, which
may help athletic performance. In contrast, negative reactions to imperfection are associated with a maladaptive
pattern of negative motivational orientations and self-depreciating attributions, which is likely to undermine athletic performance. Consequently, perfectionism in sport may be adaptive in those athletes who strive for perfection, but can control their negative reactions when performance is less than perfect
Development of an Enzyme-Linked Immunosorbent Assay (ELISA) for the Quantification of ARID1A in Tissue Lysates
ARID1A is a subunit of the mammalian SWI/SNF complex, which is thought to regulate
gene expression through restructuring chromatin structures. Its gene ARID1A is frequently mutated
and ARID1A levels are lowered in several human cancers, especially gynecologic ones. A functional
ARID1A loss may have prognostic or predictive value in terms of therapeutic strategies but has not
been proposed based on a quantitative method. Hardly any literature is available on ARID1A levels in
tumor samples. We developed an indirect enzyme-linked immunosorbent assay (ELISA) for ARID1A
based on the current EMA and FDA criteria. We demonstrated that our ELISA provides the objective,
accurate, and precise quantification of ARID1A concentrations in recombinant protein solutions, cell
culture standards, and tissue lysates of tumors. A standard curve analysis yielded a ‘goodness of
fit’ of R2 = 0.99. Standards measured on several plates and days achieved an inter-assay accuracy of
90.26% and an inter-assay precision with a coefficient of variation of 4.53%. When tumor lysates were
prepared and measured multiple times, our method had an inter-assay precision with a coefficient of
variation of 11.78%. We believe that our suggested method ensures a high reproducibility and can
be used for a high sample throughput to determine the ARID1A concentration in different tumor
entities. The application of our ELISA on various tumor and control tissues will allow us to explore
whether quantitative ARID1A measurements in tumor samples are of predictive value
Violation of a Leggett-Garg inequality with ideal non-invasive measurements
The quantum superposition principle states that an entity can exist in two
different states simultaneously, counter to our 'classical' intuition. Is it
possible to understand a given system's behaviour without such a concept? A
test designed by Leggett and Garg can rule out this possibility. The test,
originally intended for macroscopic objects, has been implemented in various
systems. However to-date no experiment has employed the 'ideal negative result'
measurements that are required for the most robust test. Here we introduce a
general protocol for these special measurements using an ancillary system which
acts as a local measuring device but which need not be perfectly prepared. We
report an experimental realisation using spin-bearing phosphorus impurities in
silicon. The results demonstrate the necessity of a non-classical picture for
this class of microscopic system. Our procedure can be applied to systems of
any size, whether individually controlled or in a spatial ensemble.Comment: 6+4 pages. Supplementary Methods section include
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