3,217 research outputs found

    Computing the symmetric gl1\mathfrak{gl}_1-homology

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    The symmetric gln\mathfrak{gl}_n-homologies, introduced by Robert and Wagner, provide a categorification of the Reshetikhin--Turaev invariants corresponding to symmetric powers of the standard representation of quantum gln\mathfrak{gl}_n. Unlike in the exterior setting, these homologies are already non-trivial when n=1n=1. Moreover, in this case, their construction can be greatly simplified. Our first aim is giving a down-to-earth description of the non-equivariant symmetric gl1\mathfrak{gl}_1-homology, together with relations that hold in this setting. We then find a basis for the state spaces of graphs, and use it to construct an algorithm and a program computing the invariant for uncolored links.Comment: 37 pages, many figures, 1 table. Comments welcome

    Nuevos registros de Ceratopogonidae (Diptera) para Argentina y Chile

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    New records are provided for 22 species of biting midges (Diptera: Ceratopogonidae) from Argentina and Chile, 12 belonging to Forcipomyia Meigen, two to Atrichopogon Kieffer and Culicoides Latreille, and one to Leptoconops Skuse, Dasyhelea Kieffer, Paradasyhelea Macfie, Alluaudomyia Kieffer, Macrurohelea Ingram & Macfie and Palpomyia Meigen. Forcipomyia (F.) harpegonata Wirth & Soria, F. (F.) pictoni Macfie, F. (F.) sexvittata Wirth, F. (Lepidohelea) annulatipes Macfie, F. (L.) kuanoskeles Macfie, F. (Phytohelea) jocosa Saunders and F. (Thyridomyia) nana (Macfie) are firstly recorded from Argentina, and Leptoconops ricardoi Ronderos & Spinelli, Atrichopogon endemicus Spinelli & Marino, Culicoides chacoensis Spinelli & Wirth, Paradasyhelea brevipalpis (Ingram & Macfie) and Alluaudomyia schnacki Spinelli are firstly recorded from Chile. Forcipomyia calchaqui Spinelli & Marino is removed from the subgenus Thyridomyia Saunders and assigned to the subgenus Synthyridomyia Saunders.Se brindan nuevas citas de 22 especies de Ceratopogonidae para Argentina y Chile, de las cuales 12 pertenecen a Forcipomyia Meigen, dos a Atrichopogon Kieffer y Culicoides Latreille, y una a Leptoconops Skuse, Dasyhelea Kieffer, Paradasyhelea Macfie, Alluaudomyia Kieffer, Macrurohelea Ingram & Macfie y Palpomyia Meigen. Forcipomyia (F.) harpegonata Wirth & Soria, F. (F.) pictoni Macfie, F. (F.) sexvittata Wirth, F. (Lepidohelea) annulatipes Macfie, F. (L.) kuanoskeles Macfie, F. (Phytohelea) jocosa Saunders y F. (Thyridomyia) nana (Macfie) son registradas por primera vez para Argentina, mientras que Leptoconops ricardoi Ronderos & Spinelli, Atrichopogon endemicus Spinelli & Marino, Culicoides chacoensis Spinelli & Wirth, Paradasyhelea brevipalpis (Ingram & Macfie) y Alluaudomyia schnacki Spinelli lo son para Chile. Se excluye Forcipomyia calchaqui Spinelli & Marino del subgénero Thyridomyia Saunders y se la asigna a Synthyridomyia Saunders.Fil: Spinelli, Gustavo Ricardo. Universidad Nacional de La Plata. Facultad de Ciencias Naturales y Museo. División Entomología; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; ArgentinaFil: Marino, Pablo Ignacio. Universidad Nacional de La Plata. Facultad de Ciencias Naturales y Museo. División Entomología; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; ArgentinaFil: Gaddi, Ana Laura. Universidad Nacional de La Plata. Facultad de Ciencias Naturales y Museo. División Entomología; Argentin

    What is Justice? An Investigation of Leo Strauss’s Natural Right Proposition

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    Pregnancy after liver transplantation: a case series and review of the literature

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    Objective: To evaluate maternal and perinatal outcomes in pregnant women after liver transplantation with a case series and literature systematic review. Methods: This was a single-center case-series study performed at University of Naples Federico II. All consecutive women with liver transplantation who reported pregnancy at our institution were included in a dedicated database. In addition, a systematic literature review was performed, including case series, population-based studies, and national registries, including maternal and perinatal outcomes of pregnant women with liver transplant. Studies with fewer than 10 cases and surveys were excluded. The primary outcome was perinatal death, defined as either stillbirth (defined as intrauterine fetal death after 20 weeks of gestation) or neonatal death (death of a live-born infant within the first 28 d of life). Results: During the study period, two women who underwent liver transplantation had a pregnancy in our Institution. Both of them underwent liver transplantation for biliary atresia at 1 year of age. One of them received cyclosporin as immunosuppressive regime during pregnancy, while the other one received tacrolimus. Both of them had a pregnancy with no major complications and delivered by cesarean section at term a baby with normal weight. One of them developed thrombocytopenia. Seventeen articles were included in this systematic review. Preterm birth at less than 37 weeks of gestations occurred in 279 women (33.6%). One-hundred women (14.9%) experienced preeclampsia, and 206 women (49.2%) delivered by cesarean delivery. Graft rejection related to pregnancy occurred in 73 women (8.3%). 117 women (12.9%) experienced miscarriage, and 22 (2.3%) IUFD. Fifty-two women (9.52%) underwent elective I-TOP. 195 fetuses (33.4%) were LBW. Eight neonatal deaths were recorded (1.3%). Conclusion: The maternal and perinatal outcome is usually favorable, but with an increased risk of preeclampsia, preterm birth, and perinatal morbidity and mortality. However, appropriate counseling about risks and complications is essential but women shouldn't be advised against pregnancy

    Book Forum on Estetica e natura umana: Questions by Simona Chiodo, Roberta Dreon, Shaun Gallagher, Tonino Griffero, Jerrold Levinson, Claudio Paolucci, Richard Shusterman: Replies by Giovanni Matteucci

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    Giovanni Matteucci\u2019s recent book 'Estetica e natura umana. La mente estesa tra percezione, emozione ed espressione' (Carocci editore, Roma 2019) ambitiously aims to bring together on the same ground \u2013 namely, a study on human nature \u2013 the tenets of two fields of research, aesthetics and the philosophy of mind. The path outlined in the book 'Estetica e natura umana' and some recent articles by Matteucci is aimed at re-establishing the continuity that exists between various aspects and modalities connoting human experience: a continuity, the latter, that according to Matteucci has been undermined by a centuries-long dualistic philosophical attitude towards human nature as such. On this basis, we thought it stimulating for scholars of philosophy, for readers of \u201cMeta\u201d and for the author himself, to put his original philosophical conception to the test, so to speak, by planning and organizing a book forum with some questions asked by distinguished philosophers of our time working on both aesthetics and the philosophy of mind, and with the detailed replies provided by Matteucci. The complexity underlying Matteucci\u2019s recent philosophical research is thus attested, beside his writings, by the wide-ranging questions raised by the discussants involved in this Forum: Simona Chiodo, Roberta Dreon, Shaun Gallagher, Tonino Griffero, Jerrold Levinson, Claudio Paolucci, Richard Shusterman. The topics and problems called into question by each of them, according to their specific competence, span from the relation to the traditions of pragmatism and phenomenology to enactivism, from the question of aesthetic properties to the role of the body in aesthetic experience, from the relation between perception and language to technology, just to mention a few of them. In our view, as editors of this book forum, the discussants\u2019 questions and the replies provided by the author ultimately prove how flourishing, rich and full of potential, also for further discussion, this field of research currently is

    Communicating corporate social responsibility to involve stakeholders. The case of employer branding for university students

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    La responsabilità sociale d'impresa (o Corporate Social Responsibility, CSR) è uno strumento efficace di marketing e la sua efficacia è mediata dalla modalità con cui le aziende comunicano le proprie attività di CSR agli stakeholder. La ricerca si propone di valutare l'effetto di cinque strategie di comunicazione della CSR, ordinate secondo un livello crescente di coinvolgimento degli stakeholder, sull'Employer Branding (EB) di un'azienda ipotetica. Attraverso la distribuzione di cinque varianti di un opuscolo, l’azienda è stata presentata a due campioni di studenti universitari (n=167; n=112) in cinque diversi scenari comunicativi della CSR. È stato somministrato un questionario con scale che misurano l’attrattività dell'azienda, il prestigio percepito dell'azienda, la disponibilità dei soggetti a entrare in contatto con l'azienda e l’impegno prospettico sul lavoro. È stata anche indagata la percezione della brand personality e della comunicazione della CSR. Le analisi confermano che tutti e cinque gli scenari sono caratterizzati da alti livelli delle dimensioni dell’EB, però lo specifico dialogo di CSR adottato può generare differenti percezioni della brand personality dell'azienda.Corporate Social Responsibility (CRS) is an effective marketing lever, and its effectiveness is mediated by the strategies companies use to communicate their CRS activities to stakeholders. The present research aims at assessing the effect of five CSR communicative strategies, ranked according to an increasing involvement level of stakeholders, on a fictional company’s Employer Branding (EB). The company was presented to two samples of university students (n=167; n=112) via the administration of five different versions of a brochure, corresponding to five different communicative scenarios of CSR. A self-report questionnaire was administrated, with scales measuring the company’s attractiveness, perceived prestige, intention to contact the company, and prospective engagement, as well as the company’s perceived brand personality and CSR communication. Analyses report high levels of the EB dimensions in all five communicative scenarios, which however produce different perceptions of the company’s brand personality

    Soluble suppression of tumorigenicity 2 and echocardiography in sepsis

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    Soluble suppression of tumorigenicity 2 (sST2) has emerged as a biomarker of cardiac stretch or remodeling, and has demonstrated a role in acutely decompensated heart failure. However, its role in sepsis-induced cardiac dysfunction is still unknown. We explored whether sST2 serum concentration reflects either systolic or diastolic dysfunction as measured by Doppler echocardiography. In a total of 127 patients with sepsis, correlations between sST2 and blood pressure, left ventricular (LV) ejection fraction, LV diastolic filling (ratio of early transmitral flow velocity to early diastolic mitral annulus velocity), and resting pulmonary arterial pressure were evaluated. Correlations between sST2 and other sepsis biomarkers (high-sensitivity C-reactive protein [hs-CRP] and procalcitonin) were also examined. sST2 showed a moderate correlation with mean arterial pressure (r=-0.3499) but no correlation with LV ejection fraction, diastolic filling, or resting pulmonary hypertension. It showed moderate correlations with hs-CRP and procalcitonin (r=0.2608 and r=0.3829, respectively). sST2 might have a role as a biomarker of shock or inflammation, but it cannot reflect echocardiographic findings of LV ejection fraction or diastolic filling in sepsis
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