Highlights from PHENIX II: Exploring the QCD medium

Much of the present experimental effort at RHIC is now directed towards understanding the properties of the hot and dense colored medium created in A+A collisions. Recent results from PHENIX on the dynamical evolution of the medium and its response to high momentum probes are presented, and their impact on our overall understanding of heavy-ion collisions is discussed.Comment: 8 pages, 6 figures - To appear in the conference proceedings for Quark Matter 2009, March 30 - April 4, Knoxville, Tennessee. Revised versio

Size reconstructibility of graphs

The deck of a graph $G$ is given by the multiset of (unlabelled) subgraphs $\{G-v:v\in V(G)\}$. The subgraphs $G-v$ are referred to as the cards of $G$. Brown and Fenner recently showed that, for $n\geq29$, the number of edges of a graph $G$ can be computed from any deck missing 2 cards. We show that, for sufficiently large $n$, the number of edges can be computed from any deck missing at most $\frac1{20}\sqrt{n}$ cards.Comment: 15 page

Humane care in the public hospital setting: nurses’ perspective

In 2003, the Brazilian Ministry of Health created a public policy focused on humane care, the National Humanization Policy (NHP). This policy should be implemented in all actions of health promotion, thus changing the traditional model of health management and care. The NHP should also strengthen shared management practices in the health work process and eventually meet the needs of health professionals and users of public health care in Brazi

Overcoming ‘Minimal Objectivity’ and ‘Inherent Bias’: Ethics and Understandings of Feminist Research in a Health Sciences Faculty in South Africa

One day, three feminist academics from different disciplinary backgrounds met over coffee on a health sciences campus. Keen to work collectively with medical students, they devised a four-week special study module (SSM) called ‘Intersecting Identities’ that combined a variation of Photovoice, a participatory action research method, with seminars on gender, ‘race’, class, sexual orientation, and other identities. The end results would include a photo exhibition open to the university community, and a portfolio of student’s work. Inherent in the SSM were tenets of feminist research and disciplinary curiosity encouraged by the field of medical and health humanities (MHH). In seeking ethics approval for the SSM, the shared challenges linked to feminist research and cross-disciplinary work in MHH was revealed. The ethics committee suggested that the SSM was ‘inherently biased’ and that there was ‘evidence of minimal objectivity, which is not what research demands’. This article contextualises the SSM in relation to the medical curriculum and the nascent field of MHH and then analyses the committee’s objections and the authors’ replies to them. A discourse analysis and examination of this correspondence provides insights into a case study of inherent epistemic disciplinary violence, pedagogical clashes, notions of ‘risk’ in research, and the long road towards epistemic generosity and reciprocity

Juventud, trabajo y militancia: en tiempos de pandemia

Hace ya algunas semanas, nos invitaron a escribir, sobre las vidas de lxs jóvenes en cuarentena. La pregunta disparadora era “¿Cómo viven lxs jóvenes el Aislamiento Social Preventivo y Obligatorio?” con la amplitud que ella implica. Las crónicas que van a leer a continuación, tienen un punto central que enlaza los escritos y nos une a nosotras para contar esta historia lo más fuerte que podamos. Es por esta razón, que consideramos necesario comenzar con ese punto común, que no es ni más ni menos que la protagonista de nuestras historias: La Chuchu es una joven de 22 años que vive con su mamá y sus hermanos en un barrio ubicado al norte de la ciudad de Córdoba llamado Los Cortaderos.publishedVersionFil: Müller, Lucía V. Universidad Nacional de Córdoba. Facultad de Ciencias Sociales; Argentina.Fil: Nannini, Carla. Universidad Nacional de Córdoba. Facultad de Ciencias Sociales; Argentina

Entwicklung der Altersarmut bis 2036: Trends, Risikogruppen und Politikszenarien

Wie entwickelt sich das Risiko für Altersarmut in der nahen bis mittleren Frist? Welche Gruppen werden besonders von Altersarmut betroffen sein? Welche Auswirkungen haben derzeit diskutierte Rentenreformen auf die Entwicklung der Altersarmut? Es ist das Ziel dieser Simulationsstudie, Antworten auf diese zentralen sozialpolitischen Fragen zu geben. Um das Armutsrisiko zu messen, wird in dieser Analyse das gesamte Einkommen nach Steuern im Haushaltskontext auf Basis von repräsentativen Haushaltsdaten simuliert und geschätzt, wie sich das Armutsrisiko bis zum Jahr 2036 entwickeln wird. In den Simulationen werden die Gesetzliche Rentenversicherung (GRV)/Beamtenversorgung, Betriebliche Altersvorsorge (BAV), Lohneinkommen und private Absicherung (z. B. Riester- und Rürup-Rente, Lebensversicherung und weitere Formen von Geldvermögen) sowie Steuern, Sozialabgaben und Transfers modelliert. [...]How will the risk of old-age poverty develop in the near to mid-term? Which groups will be particularly affected by old-age poverty? What are the effects of pension reforms on the development of old-age poverty? It is the goal of this simulation study to provide answers to these central social policy questions. In order to measure the poverty risk, this analysis simulates the total household income after tax on the basis of representative survey data and estimates how the risk of poverty will develop up to the year 2036. The simulations model the statutory pension insurance, pensions for civil servants, occupational pensions, labor income and private savings (for example subsidized private insurance plans (Riester- and Rürup-Rente), life insurance and other financial assets) as well as taxes, social security contributions and transfers. [...

Effect of the structural features of biobased linear polyester plasticizers on the crystallization of polylactides

This work presents, for the first time, a detailed report on how the nucleation and crystallization of polylactide (PLLA) are affected by biobased aliphatic polyesters plasticizers. Three biobased polyesters were synthesized via solvent-free two-stage melt polycondensation of adipic acid (AdA) with three different biobased aliphatic diols and used as plasticizers for poly (L-lactic acid) (PLLA). The molecular structure of the synthesized polyesters was proved using H-1 NMR, C-13 NMR and Fourier transform infrared (FTIR) spectroscopy. PLLA/AdA-based blends containing 10 wt% of the polyester plasticizers were studied by tensile tests, dynamic mechanical analysis (DMA), wide-angle x-ray scattering (WAXS), differential scanning calorimetry (DSC) and polarized light optical microscopy (PLOM). Adding the plasticizers to PLLA decreased T-g by up to 11 degrees C and significantly increased the elongation at break by about 8 times compared with neat PLLA. The addition of 10 wt% of any AdA-based plasticizer to PLLA increases the nucleation rate from the glassy state by around 50-110 % depending on the plasticizer. The overall crystallization rate from the glassy state was 2-3 times faster for the plasticized PLLAs than neat PLLA. These results are a consequence of the lower energy barrier for both nucleation and growth processes. The incorporation of AdA-based linear polyesters had an incremental impact on the crystal growth rate (or secondary nucleation) of PLLA spherulites from the melt and glassy states. In conclusion, the AdA-based aliphatic polyesters allowed to enhance PLLA crystallization rates and showed interesting potential for the formulation of fully biobased PLLA blends.The authors are grateful to the Luxembourg National Research Fond (FNR) for financial support (CATBIOSE project INTER/ANR 15/9903334) . We would like to acknowledge Coraline Sirot, Regis Vaude-mont and Benot Marcolini who continuously provide a friendly and supportive environment to help us conduct our work. We acknowledge the financial support from the BIODEST project; this project has received funding from the European Union's Horizon 2020 research and innovation program under the Marie Sklodowska-Curie Grant Agreement No. 778092. This work has also received funding from the Basque Government through grant IT1309-19

Produtos educacionais no ensino e aprendizagem de matemática

Mestrados Profissionais (MPs) da área de ensino por meio da pesquisa translacional, devem intervir direta ou indiretamente nos problemas educacionais de dentro e/ou fora da escola. A dificuldade de avançar no aprendizado de matemática tem desmotivado estudantes de diferentes níveis. O objetivo desta pesquisa bibliográfica analítica é identificar produtos educacionais (PE) gerados no âmbito dos mestrados profissionais da área de ensino, preocupados com a temática, e analisar quais respostas estão sendo oferecidas para tal problema. A busca foi realizada nos portais EDUCAPES e Observatório ProfEPT. Ao todo foram encontrados 26 PE, entre aplicativos, jogos, livros digitais, textos, vídeos e outros. Deste total foram selecionados 11 para análise. Concluímos que há um engessamento nas abordagens dos PE nos níveis de ensino em que são aplicados e que ainda é preciso avançar para que a atuação da área seja mais significativa no ensino e aprendizagem de matemática.