111 research outputs found

    Microcanonical treatment of black hole decay at the Large Hadron Collider

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    This study of corrections to the canonical picture of black hole decay in large extra dimensions examines the effects of back-reaction corrected and microcanonical emission at the LHC. We provide statistical interpretations of the different multiparticle number densities in terms of black hole decay to standard model particles. Provided new heavy particles of mass near the fundamental Planck scale are not discovered, differences between these corrections and thermal decay will be insignificant at the LHC.Comment: small additions and clarifications, format for J. Phys.

    Social jetlag and prostate cancer incidence in Alberta\u27s Tomorrow Project: A prospective cohort study

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    We investigated the association of social jetlag (misalignment between the internal clock and socially required timing of activities) and prostate cancer incidence in a prospective cohort in Alberta, Canada. Data were collected from 7455 cancer-free men aged 35-69 years enrolled in Alberta\u27s Tomorrow Project (ATP) from 2001-2007. In the 2008 survey, participants reported usual bed- and wake-times on weekdays and weekend days. Social jetlag was defined as the absolute difference in waking time between weekday and weekend days, and was categorized into three groups: 0-\u3c1 h (from 0 to anything smaller than 1), 1-\u3c2 h (from 1 to anything smaller than 2), and 2+ h. ATP facilitated data linkage with the Alberta Cancer Registry in June 2018 to determine incident prostate cancer cases

    The GALAH survey: New diffuse interstellar bands found in residuals of 872,000 stellar spectra

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    We use more than 872,000 mid-to-high resolution (R \sim 20,000) spectra of stars from the GALAH survey to discern the spectra of diffuse interstellar bands (DIBs). We use four windows with the wavelength range from 4718 to 4903, 5649 to 5873, 6481 to 6739, and 7590 to 7890 \AA, giving a total coverage of 967 \AA. We produce \sim400,000 spectra of interstellar medium (ISM) absorption features and correct them for radial velocities of the DIB clouds. Ultimately, we combine the 33,115 best ISM spectra into six reddening bins with a range of 0.1mag<E(BV)<0.7mag0.1 \,\mathrm{mag} < E\mathrm{(B-V)} < 0.7\, \mathrm{mag}. A total of 183 absorption features in these spectra qualify as DIBs, their fitted model parameters are summarized in a detailed catalogue. From these, 64 are not reported in the literature, among these 17 are certain, 14 are probable and 33 are possible. We find that the broad DIBs can be fitted with a multitude of narrower DIBs. Finally, we create a synthetic DIB spectrum at unit reddening which should allow us to narrow down the possible carriers of DIBs and explore the composition of the ISM and ultimately better model dust and star formation as well as to correct Galactic and extragalactic observations. The majority of certain DIBs show a significant excess of equivalent width when compared to reddening. We explain this with observed lines of sight penetrating more uniform DIB clouds compared to clumpy dust clouds.Comment: 28 pages, 15 figures, 11 tables, accepted for publication in MNRA

    The Third wave in globalization theory

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    This essay examines a proposition made in the literature that there are three waves in globalization theory—the globalist, skeptical, and postskeptical or transformational waves—and argues that this division requires a new look. The essay is a critique of the third of these waves and its relationship with the second wave. Contributors to the third wave not only defend the idea of globalization from criticism by the skeptics but also try to construct a more complex and qualified theory of globalization than provided by first-wave accounts. The argument made here is that third-wave authors come to conclusions that try to defend globalization yet include qualifications that in practice reaffirm skeptical claims. This feature of the literature has been overlooked in debates and the aim of this essay is to revisit the literature and identify as well as discuss this problem. Such a presentation has political implications. Third wavers propose globalist cosmopolitan democracy when the substance of their arguments does more in practice to bolster the skeptical view of politics based on inequality and conflict, nation-states and regional blocs, and alliances of common interest or ideology rather than cosmopolitan global structures

    Taller de serigrafia para los pobladores del asentamiento humano las Torres de San Borja - Moche- La Libertad

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    RESUMEN Se realizó un proyecto de responsabilidad social sobre serigrafía en el Asentamiento Humano “Las Torres de San Borja”, con la finalidad de generar una idea de negocio para los pobladores de dicha zona, con la participación de los estudiantes de la Universidad Privada del Norte. El objetivo de este taller es fabricar polos personalizados para brindar facilidad y comodidad al cliente elaborando diseños originales, a la vanguardia en continua interacción con las tendencias de la moda. Para llevar a cabo este taller: primero, se realizó una lluvia de ideas y se escogió la propuesta más factible. Luego, se realizaron capacitaciones al equipo monitor. Después, se hizo la difusión del taller en la zona para la respectiva inscripción de los interesados. Por último, se logró realizar el taller con gran éxito en la transmisión de la idea de negocio a la comunidad.ABSTRACT A project of social responsibility about serigraphy took place in the human settlement Las Torres de San Borja, in order to generate a business idea for the people of that area, with the participation of students from the Universidad Privada del Norte. The objective of this workshop is to manufacture custom t-shirts to provide ease and comfort to the customer elaborating original designs, in continuous interaction with fashion trends. To carry out this workshop: first, a brainstorming took place and the most feasible proposal was chosen. Then, training was made to collaborators. After, the workshop was disseminated in the area for the respective registration of the interested parties. Finally, the workshop was done with great success for the transmission of the business idea to the community. Keyword: serigraphy, business idea, trainings, community

    SARS-CoV-2 infection and antibody seroprevalence in routine surveillance patients, healthcare workers and general population in Kita region, Mali: an observational study 2020–2021

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    Objective: To estimate the degree of SARS-CoV-2 transmission among healthcare workers (HCWs) and general population in Kita region of Mali. Design: Routine surveillance in 12 health facilities, HCWs serosurvey in five health facilities and community serosurvey in 16 villages in or near Kita town, Mali. Setting: Kita region, western Mali; local health centres around the central (regional) referral health centre. Participants: Patients in routine surveillance, HCWs in local health centres and community members of all ages in populations associated with study health centres. Main outcome measures: Seropositivity of ELISA test detecting SARS-CoV-2-specific total antibodies and real-time RT-PCR confirmed SARS-CoV-2 infection. Results: From 2392 routine surveillance samples, 68 (2.8%, 95% CI: 2.2% to 3.6%) tested positive for SARS-CoV-2 by RT-PCR. The monthly positivity rate was 0% in June–August 2020 and gradually increased to 6% by December 2020 and 6.2% by January 2021, then declined to 5.5%, 3.3%, 3.6% and 0.8% in February, March, April and May 2021, respectively. From 397 serum samples collected from 113 HCWs, 175 (44.1%, 95% CI: 39.1% to 49.1%) were positive for SARS-CoV-2 antibodies. The monthly seroprevalence was around 10% from September to November 2020 and increased to over 40% from December 2020 to May 2021. For community serosurvey in December 2020, overall seroprevalence of SARS-CoV-2 antibodies was 27.7%. The highest age-stratified seroprevalence was observed in participants aged 60–69 years (45.5%, 95% CI: 32.3% to 58.6%). The lowest was in children aged 0–9 years (14.0%, 95% CI: 7.4% to 20.6%). Conclusions: SARS-CoV-2 in rural Mali is much more widespread than assumed by national testing data and particularly in the older population and frontline HCWs. The observation is contrary to the widely expressed view, based on limited data, that COVID-19 infection rates were lower in 2020–2021 in West Africa than in other settings

    The GALAH survey: Chemical homogeneity of the Orion complex

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    Due to its proximity, the Orion star forming region is often used as a proxy to study processes related to star formation and to observe young stars in the environment they were born in. With the release of Gaia DR2, the distance measurements to the Orion complex are now good enough that the 3D structure of the complex can be explored. Here we test the hypothesis that, due to non-trivial structure and dynamics, and age spread in the Orion complex, the chemical enrichment of youngest stars by early core-collapse supernovae can be observed. We obtained spectra of 794 stars of the Orion complex with the HERMES spectrograph at the Anglo Australian telescope as a part of the GALAH and GALAH-related surveys. We use the spectra of ~300 stars to derive precise atmospheric parameters and chemical abundances of 25 elements for 15 stellar clusters in the Orion complex. We demonstrate that the Orion complex is chemically homogeneous and that there was no self-pollution of young clusters by core-collapse supernovae from older clusters; with a precision of 0.02 dex in relative alpha-elements abundance and 0.06 dex in oxygen abundance we would have been able to detect pollution from a single supernova, given a fortunate location of the SN and favourable conditions for ISM mixing. We estimate that the supernova rate in the Orion complex was very low, possibly producing no supernova by the time the youngest stars of the observed population formed (from around 21 to 8 Myr ago).Funding for the DPAC has been provided by national institutions, in particular the institutions participating in the Gaia Multilateral Agreement

    Plan de gestión de responsabilidad social a través del reforzamiento de la lectura en biblioteca para todos del asentamiento humano Torres de San Borja – Moche Trujillo Perú

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    RESUMEN En el Perú actualmente existen muchos problemas sociales a ser resueltos, como los derechos básicos de la población que cuenta con escasos recursos, y muchas veces las autoridades no se interesan por estas personas, por lo que se desperdicia talento y potencial que es la tendencia básica al crecimiento (LAFARGA, 2013), como fuerza motivacional de todas sus acciones que puede ser aprovechado para mejorar nuestra sociedad. Por lo que la responsabilidad social es una nueva forma de atender las necesidades de una población y fomentar su desarrollo, además de la obtención de beneficios económicos para las empresas participantes. (Cancino de Castillo, Y Morales, 2008) El propósito de esta investigación es de fomentar la lectura y mejorar la comprensión lectora de los niños que habitan en el asentamiento humano “Torres de San Borja”, puesto que dicho proyecto, servirá a estos niños a futuro como herramienta de desarrollo intelectual y adaptabilidad en nuestra sociedad, mejorando sus posibilidades de lograr sus metas y aprender conceptos nuevos. El proceso de mejora de la comprensión lectora es un proceso intelectual y cognitivo que nos permite obtener información a partir de un texto (Gómez, 2011). Este es elativamente lento, requiere paciencia y ciertos conocimientos básicos de pedagogía infantil que ha considerado el juego como un recurso educativo de primer orden y ha ilustrado ampliamente sus efectos en el desarrollo infantil (Jover, y Rico, 2013). Las herramientas como lecturas, cuentos infantiles, fábulas, etc; son necesarias para poder incentivar la lectura y fomentar la participación infantil con el fin de volverlos personas abiertas, que quieran transmitir sus ideas a los demás. El material y libros para niños, debe ser adecuado y útil para chicos de su edad, puesto que al ser obtenido mediante donaciones se deben revisar que sean aptos para ellos. Al final se debe tener en cuenta contar con las herramientas de medición de comprensión lectora, exámenes y actividades como relacionar las ideas del texto con su conocimiento previo o elaborar nuevas ideas a partir del texto leído. (Ramos, 2006) En conclusión, nuestro proyecto busca aplicar los conceptos de la responsabilidad social empresarial en el asentamiento humano “Torres de San Borja” con el fin de ayudar a desarrollar a los niños de forma intelectual y cognitiva, logrando que ellos puedan desempeñarse en la sociedad como personas de bien y aportando a la sociedad, mediante el uso de la lectura como la herramienta fundamental de trabajo. PALABRAS CLAVES: Responsabilidad social, Comprensión lectora, Métodos de comprensión lectora, Lectura, Libros, Donación, Cuentos infantiles.ABSTRACT In Peru there are currently many social problems to be solved, such as the basic rights of the population that has scarce resources, and many times the authorities are not interested in these people, so talent and potential are wasted. Potential is the basic tendency of growth, as a motivational force of all its actions, can be used to improve our society (LAFARGA, 2013). Social responsibility is a new way to meet the needs of the people and promote their development, in addition to obtaining economic benefits for participating companies. (CANCINO, AND MORALES, 2008) The purpose of this research is to promote reading and improve reading comprehension of children living in the human settlement "Torres de San Borja", since this project will serve these children in the future as a tool for intellectual development and adaptability in our society, improving your chances of achieving your goals and learning new concepts. The process of improving reading comprehension, is an intellectual and cognitive process that allows us to obtain information from a text (GOMEZ PALOMINO, 2011). This is elatively slow, requires patience and certain basic knowledge of child pedagogy. Child Pedagogy considers play as an educational resource of the first order and influenced its effects on child development (JOVER, AND RICO, 2013). The tools such as readings, children's stories, fables, etc; they are necessary to be able to encourage reading and encourage children's participation in order to make them open people, who want to transmit their ideas to others. The material and books for children, should be appropriate and useful for children of their age, since to be obtained through donations should be reviewed that are suitable for them. At the end, it is necessary to take into account the reading comprehension measurement tools, exams and activities such as relating the ideas of the text with their previous knowledge or elaborating new ideas from the read text. (RAMOS, 2006) In conclusion, our project seeks to apply the concepts of corporate social responsibility in the human settlement "Torres de San Borja" in order to help develop children intellectually and cognitively, achieving that they can perform in society as people of good and contributing to society, through the use of reading as the fundamental tool of work

    The Ninth Data Release of the Sloan Digital Sky Survey: First Spectroscopic Data from the SDSS-III Baryon Oscillation Spectroscopic Survey

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    The Sloan Digital Sky Survey III (SDSS-III) presents the first spectroscopic data from the Baryon Oscillation Spectroscopic Survey (BOSS). This ninth data release (DR9) of the SDSS project includes 535,995 new galaxy spectra (median z=0.52), 102,100 new quasar spectra (median z=2.32), and 90,897 new stellar spectra, along with the data presented in previous data releases. These spectra were obtained with the new BOSS spectrograph and were taken between 2009 December and 2011 July. In addition, the stellar parameters pipeline, which determines radial velocities, surface temperatures, surface gravities, and metallicities of stars, has been updated and refined with improvements in temperature estimates for stars with T_eff<5000 K and in metallicity estimates for stars with [Fe/H]>-0.5. DR9 includes new stellar parameters for all stars presented in DR8, including stars from SDSS-I and II, as well as those observed as part of the SDSS-III Sloan Extension for Galactic Understanding and Exploration-2 (SEGUE-2). The astrometry error introduced in the DR8 imaging catalogs has been corrected in the DR9 data products. The next data release for SDSS-III will be in Summer 2013, which will present the first data from the Apache Point Observatory Galactic Evolution Experiment (APOGEE) along with another year of data from BOSS, followed by the final SDSS-III data release in December 2014.Comment: 9 figures; 2 tables. Submitted to ApJS. DR9 is available at http://www.sdss3.org/dr
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