Non-commutative Solitons in Finite Quantum Mechanics

We construct the unitary evolution operators that realize the quantization of linear maps of SL(2,R) over phase spaces of arbitrary integer discretization N and show the non-trivial dependence on the arithmetic nature of N. We discuss the corresponding uncertainty principle and construct the corresponding coherent states, that may be interpreted as non-commutative solitons.Comment: 3 pages LaTeX. Uses espcrc2.sty and amssymb.sty. Contribution to Lattice 2002(theoretical

Child's Exposures to Emotional Neglect in Drug users Families

AbstractThis study approaches a less common theme in specialized literature, the influence of the family, in which the parent is addicted to drugs. This study tries to capture this influence on child comportment in time, therefore the selection of subjects was made taking into account that they have reached the age of 18. The results obtained showed that subjects showing aggressive behavior correspond to their low tolerance to frustration, while those who have a low level of aggression; it corresponds to a high level of tolerance to frustration

Whole genome analysis of genetic susceptibility factors in psychotic disorders

Schizophrenia is a complex neurodevelopmental illness affecting about one percent of the world’s population, throughout countries, cultural groups, and sexes. It is characterized by abnormal mental function and disturbed behavior, mostly appearing after puberty as a diverse mixture of positive and negative symptoms, and cognitive impairment. The severity of the symptoms and the chronic pattern of schizophrenia often cause a high degree of disability. Although extensive effort has been made in the quest of finding the origin of the disease, the new progress is hampered by the complexity and diversity of the symptoms combined with the fact that most symptoms of schizophrenia are usually noticed quite late in the disease process. Most of the genetic components of schizophrenia remain unknown (“the missing heritability”), as with the underlying biological mechanisms. The present study includes three papers and is based upon naturalistic data from the crosssectional part of the Thematically Organized Psychosis Research (TOP) Study, carried out in joint collaboration between the University of Oslo and University Hospitals of Oslo (now Oslo University Hospital). Through genome-wide association analysis in a homogenous Norwegian case-control sample, several potential susceptibility genes for schizophrenia were identified and replicated in a larger North-European case-control sample. The combined analysis identified phospholipase A-2 activating protein (PLAA), acyl-CoA synthetase medium-chain family member 1 (ACSM1) and ankyrin 3, node of Ranvier (ANK3) as putative candidate genes for schizophrenia. It has been hypothesized that genetic risk might overlap for different psychotic disorders. Neurotrophic tyrosine receptor 3 (NTRK3) has an important role in brain development and plasticity, and has been associated with hippocampal function in schizophrenia patients. By comparing allele frequencies of markers in NTRK3 between bipolar patients and controls, we found markers in intron 12 significantly associated with bipolar disorder. The markers were in close proximity to reported linkage regions reported in schizophrenia, early-onset major depressive disorder and eating disorder, further supporting the hypothesis of genes influencing risk beyond traditional diagnostic boundaries. Further, antipsychotics, antidepressants and mood-stabilizers are still cornerstones in the treatment of psychotic disorders, but the treatment is associated with serious clinical problems, like metabolic and cardiovascular side effects. Genetic variation could explain the difference in observed adverse effects in patients. Twelve indicator variables for metabolic side effects and cardiovascular risk factors were analyzed to identify genetic variants that mediate the effect of psychopharmacological agents on these variables. For body mass index and high density lipoprotein cholesterol, three loci were identified, two upstream of matrix metalloproteinase 16 and one on 12q21 respectively, that were found to significantly mediate drug-induced side effects

Full Scale Field Test on a Slope Progressive Failure

In order to obtain the mechanical behaviour parameters of the red structured clays from the Danube- Black Sea Canal and to estimate the behavior of the slopes cut in such clays, an experimental programme was carried out. A checked failure was provoked for a slope dug in red fissured clays. The paper presents the results of the field investigations and the laboratory test regarding the, characteristics of the structured clays, as well as the in situ measurements during the experimental programme. The results of these measurements are compared with those obtained by numerical symulation using a computer program

Geometrical characteristics of magnetospheric energetic ion time series: evidence for low dimensional chaos

International audienceIn the first part of the paper we study the geometrical characteristics of the magnetospheric ions' time series in the reconstructed phase space by using the SVD extended chaotic analysis, and we test the strong null hypothesis supposing that the ions' time series is caused by a linear stochastic process perturbed by a static nonlinear distortion. The SVD reconstructed spectrum of the ions' signal reveals a strong component of high dimensional, external coloured noise, as well as an internal low dimensional nonlinear deterministic component. Also, the stochastic Lorenz system produced by coloured noise perturbation of the deterministic Lorenz system was used as an archetype model in comparison with the dynamics of the magnetrospheric ions

Some Three Generation (0,2) Calabi-Yau Models

It has recently been realized that a large class of Calabi-Yau models in which the VEV of the gauge connection is not set equal to the spin connection of the Calabi-Yau manifold are valid classical solutions of string theory. We provide some examples of three generation models based on such generalized Calabi-Yau compactifications, including models with observable gauge group $SU(3)\times SU(2)\times U(1)$.Comment: Another very minor change to data in Example

Gauge theories and non-commutative geometry

It is shown that a $d$-dimensional classical SU(N) Yang-Mills theory can be formulated in a $d+2$-dimensional space, with the extra two dimensions forming a surface with non-commutative geometry. In this paper we present an explicit proof for the case of the torus and the sphere.Comment: 12 page