246 research outputs found

    The Abelian/Nonabelian Correspondence and Frobenius Manifolds

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    We propose an approach via Frobenius manifolds to the study (began in math.AG/0407254) of the relation between rational Gromov-Witten invariants of nonabelian quotients X//G and those of the corresponding ``abelianized'' quotients X//T, for T a maximal torus in G. The ensuing conjecture expresses the Gromov-Witten potential of X//G in terms of the potential of X//T. We prove this conjecture when the nonabelian quotients are partial flag manifolds.Comment: 35 pages, no figure

    Teaching Basketball through Dynamic Games to 11–12-Year-Old Pupils

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    The purpose of this research is to determine whether there are differences in regards to basketball learning through dynamic games between 11-12-year-old female and male middle schoolers. The subjects of the research were 40 pupils, of which 19 males and 21 females, aged 11- 12, from the “Alexandru cel Bun” Middle School of Bacau. The ANOVA test showed that there are statistically significant differences between the average time recorded by the girls and boys in almost all the challenges. In conclusion, it can be said that basketball is learned differently by 11-12- year-old pupils, according to their gender

    Новые подходы при определении степени ограничения жизнедеятельности с использованием Международной Классификации Функционирования, ограничений жизнедеятельности и здоровья

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    Department of Economy, Management and Psychopedagogy in medicine, Department of Family Medicine, Nicolae Testemitanu State Medical and Pharmaceutical University, Congresul III al Medicilor de Familie din Republica Moldova 17–18 mai, 2012, Chişinău, Republica MoldovaIn the medical model, disability has predominantly been viewed as the consequence of disease or injury in the form of functional losses or impairments. The onus has been on the individual to make efforts to become ‘rehabilitated,’ restore their function, or to cope effectively with their disabling condition. The core characteristics of the so-called ‘social model of disability’ – in contrast to the other models stress on (a) how individuals views, experiences and priorities can be effectively recognized, and (b) how the outcome of medical support and intervention is not necessarily cure or symptom management, but social participation. Disability is human experience of impaired body function and structure activity limitation participation restriction in the interaction with health conditions, personal and environmental factors. ICF provides an international common language and universal conceptual framework for describing functioning, disability and health, comprehensive, biological-psychological-social model of disability and health, consisting from medical and social aspects. Медицинская модель рассматривает “инвалидность” как свойство, присущее человеку в результате болезни, травмы или иного воздействия на состояние здоровья, которое требует медицинской помощи в виде непосредственного лечения у специалистов. Инвалидность по этой модели требует медицинского или иного вмешательства или лечения с тем, чтобы «исправить» проблему человека. Социальная модель рассматривает инвалидность как социальную проблему, а не как свойство человека. Согласно социальной модели, инвалидность требует социального вмешательства, так как проблема возникает из-за неприспособленности окружающей среды, вызываемой отношением и другими свойствами социального окружения. Инвалидность всегда представляет собой взаимодействие между свойствами человека и свойствами окружения, в котором этот человек проживает, но некоторые аспекты инвалидности являются полностью внутренними для человека, другие же, наоборот, только внешними. Наилучшая модель инвалидности, таким образом, будет представлять собой синтез всего лучшего из медицинской и социальной моделей. Такая более выгодная модель инвалидности может называться биопсихосоциальной моделью. МКФ основывается на такой модели, совмещающей медицинский и социальный аспекты

    Choosing between Homologous or Heterologous COVID-19 Vaccination Regimens: A Cross-Sectional Study among the General Population in Italy

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    A shortage of COVID-19 vaccines and reports of side-effects led several countries to recommend a heterologous regimen for second vaccine doses. This study aimed to describe the reasons behind individuals’ choices of a homologous or a heterologous second vaccination. This cross-sectional study enrolled individuals under 60 who had received a first dose of Vaxzevria and could choose between a homologous or heterologous regimen for their second dose. Quantitative (socio-demographic, clinical characteristics) and qualitative data were collected and analysed through a generalized linear model and thematic analysis, respectively. Of the 1437 individuals included in the analysis, the majority (76.1%) chose a heterologous second dose of the COVID-19 vaccination. More females chose a heterologous vaccination regimen (p = 0.003). Younger individuals also tended to choose heterologous vaccination (p < 0.001). The main motivation in favour of heterologous vaccination was to follow the Italian Ministry of Health recommendations (n = 118; 53.9%). This study showed that most individuals, mainly younger people and females, chose a heterologous dose of COVID-19 vaccination after their first viral vector vaccine. Heterologous vaccinations could be an effective public health measure to control the pandemic as they are a safe and efficient alternative to homologous regimens

    CLASH-VLT: Enhancement of (O/H) in z=0.35 RXJ 2248-4431 cluster galaxies

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    (Abridged) We explore the Frontier Fields cluster RXJ2248-443 at z~0.35 with VIMOS/VLT spectroscopy from CLASH-VLT, which covers a central region corresponding to almost 2 virial radii. The fluxes of [OII], Hbeta, [OIII], Halpha and [NII] emission lines were measured allowing the derivation of (O/H) gas metallicities, star formation rates based on extinction-corrected Halpha fluxes and active galactic nuclei (AGN) contamination. We compare our sample of cluster galaxies to a population of field galaxies at similar redshifts. We use the location of galaxies in projected phase-space to distinguish between cluster and field galaxies. Both populations follow the star-forming-sequence in the diagnostic diagrams, which allow disentangling between the ionising sources in a galaxy, with only few galaxies classified as Seyfert II. Both field and cluster galaxies follow the "Main-Sequence" of star forming galaxies, with no substantial difference observed between the two populations. In the Mass - Metallicity (MZ) plane, both high mass field and cluster galaxies show comparable (O/H)s to the local SDSS MZ relation, with an offset of low mass galaxies towards higher metallicities. While both the metallicities of "accreted" (R R500) cluster members are comparable at all masses, the cluster galaxies from the intermediate, mass complete bin show more enhanced metallicities than their field counterparts. The intermediate mass field galaxies are in accordance with the expected (O/H)s from the Fundamental Metallicity relation, while the cluster members deviate strongly from the model predictions. The results of this work are in accordance with studies of other clusters at z < 0.5 and favour the scenario in which the hot halo gas of log(M/Msun)<10.2 cluster galaxies is removed due to mild ram pressure stripping, leading to an increase in their gas-phase metallicity.Comment: Accepted for publication in A&A on 22 November 201

    Laparoscopic rectal resections: practical aspects

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    Abordul laparoscopic in chirurgia cancerului de rect este o considerat standardul de aur ce ofera rezultate oncologice similar cu o recuperare postoperatorie imbunatatita, si o rata minimala de complicatii. Pe fondul complexitatii crescute, cu toate astea, abordul laparoscopic ar trebui efectuat in centre tertiare, fiind rezervat chirurgilor cu o curba de invatare adecvata. O selectie atenta a cazurilor si o planificare adecvata ar trebui luata in considerare in cadrul acestui abord. Prezentarea de fata surprinde aspectele practice de baza precum si variatii tatice in cadrul rezectiilor de rect laparoscopice, precum si pasii potentiali in atingerea curbei de invatare.Laparoscopic approach is an already established procedure in rectal cancer which offers a similar oncological outcome, with improved postoperative recovery and fewer complications. Due to its increased complexity, however, the laparoscopic approach should be reserved for high-volume centers and for experienced surgeons with an adequate learning curve. Appropriate patient selection and planning must be carefully considered when opting for this approach. In this presentation, the primary practical aspects as well as certain tactical approaches will be covered regarding the laparoscopic rectal resections as well as the potential steps in achieving the learning curve
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