3,033 research outputs found
Has the Invisible Hand Shaped a Wooden Spoon? IT Policy in New Zealand
For the past decade and a half New Zealand has been the test-bed of public policies characterized by sustained adherence to theory informed market-based public sector reform. As the title indicates, this article concentrates on the question of how well the policy of market reliance has served New Zealand specifically in the area of Information Technology (I.T.). Arguably, I.T. warrants special attention as a potent factor in all aspects of economic and social life, and a critical component of effective public sector governance and control
Das Ketocarben-Oxiren-Gleichgewicht unter einem präparativen Aspekt≠
The photochemical decomposition of α-diazoketone 1 in toluene gives rise to the formation of the well known keto carbene-oxirene equilibrium from which not only the product of the Wolff rearrangem ent can be derived but also the com pounds 5, 6 and 7 which are formed directly via the corresponding keto carbenes A and B respectively. Formation of the azulene 6 is unexpected in this context, it's structure could be revealed by X-ray analysis. The results may be regarded as an additional contribution to the mechanism of the Wolff rearrangement, but what is more, they could serve as a model for the feasibility of mechanistic oxirene chemistry in a more preparative aspect
Chern-Simons Theory as the Large Mass Limit of Topologically Massive Yang-Mills Theory
We study quantum Chern-Simons theory as the large mass limit of the limit
of dimensionally regularized topologically massive Yang-Mills theory.
This approach can also be interpreted as a BRS-invariant hybrid regularization
of Chern-Simons theory, consisting of a higher-covariant derivative Yang-Mills
term plus dimensional regularization. Working in the Landau gauge, we compute
radiative corrections up to second order in perturbation theory and show that
there is no two-loop correction to the one-loop shift being the bare Chern-Simons parameter. In
passing we also prove by explicit computation that topologically massive
Yang-Mills theory is UV finite.Comment: 64 pages without figures (10 figures), DAMTP 91-34, LPTHE 91-61,
NBI-HE 91-55, UGMS 91-2
Infection of Human Coronary Artery Endothelial Cells by Group B Streptococcus Contributes to Dysregulation of Apoptosis, Hemostasis, and Innate Immune Responses
Early onset sepsis due to group B streptococcus leads to neonatal morbidity, increased mortality, and long-term neurological deficencies. Interaction between septicemic GBS and confluent monolayers of human coronary artery endothelial cells (HCAECs) was analyzed by genome wide expression profiling. In total, 124 genes were differentially expressed (89 upregulated, 35 downregulated) based on a more than 3-fold difference to control HCAEC. Regulated genes are involved in apoptosis, hemostasis, oxidative stress response, infection, and inflammation. Regulation of selected genes and proteins identified in the gene array analysis was confirmed by Real-time RT-PCR assay (granulocyte chemotactic protein 2), ELISA (urokinase, cyclooxygenase 2, granulocyte chemotactic protein 1), and western blotting (Heme oxygenase1, BCL2 interacting protein) at various time points between 4 and 24 hours. These results indicate that GBS infection might influence signalling pathways leading to impaired function of the innate immune system and hemorrhagic and inflammatory complications during GBS sepsis
Physically meaningful and not so meaningful symmetries in Chern-Simons theory
We explicitly show that the Landau gauge supersymmetry of Chern-Simons theory
does not have any physical significance. In fact, the difference between an
effective action both BRS invariant and Landau supersymmetric and an effective
action only BRS invariant is a finite field redefinition. Having established
this, we use a BRS invariant regulator that defines CS theory as the large mass
limit of topologically massive Yang-Mills theory to discuss the shift k \to
k+\cv of the bare Chern-Simons parameter in conncection with the Landau
supersymmetry. Finally, to convince ourselves that the shift above is not an
accident of our regularization method, we comment on the fact that all BRS
invariant regulators used as yet yield the same value for the shift.Comment: phyzzx, 21 pages, 2 figures in one PS fil
Is anyone looking at me? Direct gaze detection in children with and without autism
Atypical processing of eye contact is one of the significant characteristics of individuals with autism, but the mechanism underlying atypical direct gaze processing is still unclear. This study used a visual search paradigm to examine whether the facial context would affect direct gaze detection in children with autism. Participants were asked to detect target gazes presented among distracters with different gaze directions. The target gazes were either direct gaze or averted gaze, which were either presented alone (Experiment 1) or within facial context (Experiment 2). As with the typically developing children, the children with autism, were faster and more efficient to detect direct gaze than averted gaze, whether or not the eyes were presented alone or within faces. In addition, face inversion distorted efficient direct gaze detection in typically developing children, but not in children with autism. These results suggest that children with autism use featural information to detect direct gaze, whereas typically developing children use configural information to detect direct gaze
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The Library Publishing Coalition Project
Presentation for the 2012 CNI Fall Meeting. This presentation discusses the Library Publishing Coalition Project
Correlations in two-component log-gas systems
A systematic study of the properties of particle and charge correlation
functions in the two-dimensional Coulomb gas confined to a one-dimensional
domain is undertaken. Two versions of this system are considered: one in which
the positive and negative charges are constrained to alternate in sign along
the line, and the other where there is no charge ordering constraint. Both
systems undergo a zero-density Kosterlitz-Thouless type transition as the
dimensionless coupling is varied through . In
the charge ordered system we use a perturbation technique to establish an
decay of the two-body correlations in the high temperature limit.
For , the low-fugacity expansion of the asymptotic
charge-charge correlation can be resummed to all orders in the fugacity. The
resummation leads to the Kosterlitz renormalization equations.Comment: 39 pages, 5 figures not included, Latex, to appear J. Stat. Phys.
Shortened version of abstract belo
Inconsistency of Naive Dimensional Regularizations and Quantum Correction to Non-Abelian Chern-Simons-Matter Theory Revisited
We find the inconsistency of dimensional reduction and naive dimensional
regularization in their applications to Chern-Simons type gauge theories.
Further we adopt a consistent dimensional regularization to investigate the
quantum correction to non-Abelian Chern-Simons term coupled with fermionic
matter. Contrary to previous results, we find that not only the Chern-Simons
coefficient receives quantum correction from spinor fields, but the spinor
field also gets a finite quantum correction.Comment: 19 pages, RevTex, Feynman diagrams drawn by FEYNMAN routin
An evaluation of the distribution properties, factor structure, and item response profile of an assessment of emotion recognition
Many people with developmental disabilities, such as autism spectrum disorder and intellectual disability have emotion recognition (ER) difficulties compared with typically developing (TD) peers. Accurate assessment of the extent and nature of differences in ER requires an understanding of the response profiles to ER assessment stimuli. We analysed data from 504 TD individuals in response to an ER assessment in respect of distribution properties, factor structure, and item response profile. Eighteen emotion items discriminated better at lower levels of ER ability in TD participants. Neutral expressions were the hardest to interpret; surprise, anger, happy, and bored were easiest. The amount of contextual information in combination with the emotion being depicted also appeared to influence level of difficulty. Similar psychometric research is needed with people with developmental disabilities
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