Open heavy-flavour measurements in pp and p--Pb collisions with ALICE at the LHC

The ALICE detector is well suited to measure heavy-flavour (charm and beauty) production via hadronic and semi-leptonic decay channels of heavy-flavour particles. Here an overview of heavy-flavour measurements made with the ALICE detector during Run 1 in pp and p--Pb collisions is presented and discussed.Comment: Proceedings of 55th International Winter Meeting on Nuclear Physics, Bormio, Italy, 23-27 January 2017. 10 pages, 6 figure

The E-Government Act: Promoting E-Quality or Exaggerating the Digital Divide?

In passing the E-Government Act of 2002, Congress has promised to improve the technological savvy of federal agencies and make more public forms and records available online. However, the question is whether doing so will alienate those Americans who do not have Internet access. Will the Act exaggerate the gap between the Internet haves and have-nots that is known as the digital divide? This iBrief identifies the e-quality issues arising from the E-Government Act and argues that implementation of the Act, however well intentioned, may exaggerate the digital divide

Charmed meson and baryon measurements in pp and p-Pb collisions with ALICE at the LHC

We present here recent open heavy-flavour results from the ALICE experiment, including measurements of D-meson, $\mathrm{\Lambda_{c}^{+}}$ baryon and $\mathrm{\Xi_c^0}$ baryon production in pp collisions at $\sqrt{s} = 7~\mathrm{TeV}$ and p-Pb collisions at $\sqrt{s_{\mathrm{NN}}} = 5.02~\mathrm{TeV}$.Comment: Proceedings of 17th International Conference on Strangeness in Quark Matter, 10-15 July 201

Cosmological perturbations in teleparallel Loop Quantum Cosmology

Cosmological perturbations in Loop Quantum Cosmology (LQC) are usually studied incorporating either holonomy corrections, where the Ashtekar connection is replaced by a suitable sinus function in order to have a well-defined quantum analogue, or inverse-volume corrections coming from the eigenvalues of the inverse-volume operator. In this paper we will develop an alternative approach to calculate cosmological perturbations in LQC based on the fact that, holonomy corrected LQC in the flat Friedmann-Lema\^itre-Robertson-Walker (FLRW) geometry could be also obtained as a particular case of teleparallel $F(T)$ gravity (teleparallel LQC). The main idea of our approach is to mix the simple bounce provided by holonomy corrections in LQC with the non-singular perturbation equations given by $F(T)$ gravity, in order to obtain a matter bounce scenario as a viable alternative to slow-roll inflation. In our study, we have obtained an scale invariant power spectrum of cosmological perturbations. However, the ratio of tensor to scalar perturbations is of order $1$, which does not agree with the current observations. For this reason, we suggest a model where a transition from the matter domination to a quasi de Sitter phase is produced in order to enhance the scalar power spectrum.Comment: version accepted for publication in JCA

Science as a Form of Life and Cross-disciplinarity: Mariano Artigas and Charles S. Peirce

According to Charles S. Peirce and to Mariano Artigas, science is the collective and cooperative activity of all those whose lives are animated by the desire to discover the truth. The particular sciences are branches of a common tree. The unity of science is not achieved by the reduction of the special sciences to more basic ones: the new name for the unity of the sciences is cross-disciplinarity. This is not a union of the sciences themselves, but rather the unity and dialogue of scientists, the real inquirers into the truth. In the light of Peirce’s and Artigas’s teachings, we can see that philosophers are in just the right place to call for this unity of sciences. This call should not be seen as promoting a return to the old scientism, but seeks a deep dialogue between the particular sciences and philosophy in order to deal with the presuppositions of the scientific enterprise. The key to the cross-disciplinarity of knowledge is not revolution, but rather shared efforts in a unique mixture of continuity and fallibilism, of affection and reason, of the attempt to understand others’ disciplines as well as our own

Stress and psychological wellbeing in local humanitarian workers in Colombia working for a local non-governmental organization : a thesis submitted in partial fulfilment of the requirements for the degree of Master of Arts in Psychology at Massey University, Albany, New Zealand

This study examined the differences in stress and psychological wellbeing in 75 local humanitarian personnel (70 females and 5 males, median age = 30.7) from "Fundacion CC", local non-governmental organisation from Medellin, Colombia, who worked either in the field, with the communities they help, or in an administrative facility, doing managerial and planning types of work. Participants answered the Stress Profile questionnaire in order to assess the impact of background variables such as place of work and age, and variables theoretically associated to the processes of stress such as social support, cognitive hardiness and coping styles, on their current levels of stress and psychological wellbeing. Despite increasing worldwide evidence showing the significant impacts of humanitarian work in the field on stress and mental health of humanitarian staff, all participants consistently showed low levels of stress and high levels of psychological wellbeing regardless of place of work and any other differences among them. Additionally, this study showed that variables theorized in the literature as relevant to stress were instead more significant to assess psychological wellbeing in the sample of participants. Results and implications were discussed within the guidelines of transactional models of stress