73 research outputs found
Simulation of Sky Surveys with the Flyeye Telescope
ESA's Flyeye telescope is designed with a very large field of view (FoV) in
order to scan the sky for unknown near-Earth Objects (NEOs). For typical
exposure times of 40 s, the telescope is able to detect objects with a limiting
magnitude up to 21.5. The aim is to observe those NEOs that are going to hit
the Earth within a few weeks or days, in advance of impact. In order to
estimate the detection rate of NEOs with the Flyeye telescope, a synthetic
population of Earth threatening asteroids is created by means of the software
NEOPOP. Then, the true anomalies and longitudes of the ascending node of these
objects are modified in order to generate about 2500 impactors. In the
simulations almost three impacts can be detected per year from NEOs down to 1 m
using only one Flyeye telescope. When operating two telescopes simultaneously,
one at Monte Mufara and one at La Silla, four detected impacts per year are
expected. Nonetheless, it is estimated that about 15.6% of the Earth impactors
will be very difficult to be detected using ground-based telescopes due to the
fact that they are approaching us from the Sun.Comment: In Proc. 1st NEO and Debris Detection Conference (Darmstadt, Germany,
22-24 January 2019
High-Temperature Oxidation Behavior of Refractory High-Entropy Alloys : Effect of Alloy Composition
Effective healthcare teams require effective team members: defining teamwork competencies
BACKGROUND: Although effective teamwork has been consistently identified as a requirement for enhanced clinical outcomes in the provision of healthcare, there is limited knowledge of what makes health professionals effective team members, and even less information on how to develop skills for teamwork. This study identified critical teamwork competencies for health service managers. METHODS: Members of a state branch of the professional association of Australian health service managers participated in a teamwork survey. RESULTS: The 37% response rate enabled identification of a management teamwork competency set comprising leadership, knowledge of organizational goals and strategies and organizational commitment, respect for others, commitment to working collaboratively and to achieving a quality outcome. CONCLUSION: Although not part of the research question the data suggested that the competencies for effective teamwork are perceived to be different for management and clinical teams, and there are differences in the perceptions of effective teamwork competencies between male and female health service managers. This study adds to the growing evidence that the focus on individual skill development and individual accountability and achievement that results from existing models of health professional training, and which is continually reinforced by human resource management practices within healthcare systems, is not consistent with the competencies required for effective teamwork
Tumour brain: pre‐treatment cognitive and affective disorders caused by peripheral cancers
People that develop extracranial cancers often display co-morbid neurological disorders, such as anxiety, depression and cognitive impairment, even before commencement of chemotherapy. This suggests bidirectional crosstalk between non-CNS tumours and the brain, which can regulate peripheral tumour growth. However, the reciprocal neurological effects of tumour progression on brain homeostasis are not well understood. Here, we review brain regions involved in regulating peripheral tumour development and how they, in turn, are adversely affected by advancing tumour burden. Tumour-induced activation of the immune system, blood–brain barrier breakdown and chronic neuroinflammation can lead to circadian rhythm dysfunction, sleep disturbances, aberrant glucocorticoid production, decreased hippocampal neurogenesis and dysregulation of neural network activity, resulting in depression and memory impairments. Given that cancer-related cognitive impairment diminishes patient quality of life, reduces adherence to chemotherapy and worsens cancer prognosis, it is essential that more research is focused at understanding how peripheral tumours affect brain homeostasis
Mixing Standard Work and Nonstandard Deals: The Consequences of Heterogeneity in Employment Arrangements
Lymphocyte blastogenic responses to allogeneic leukocytes and autochthonous tumor cells in colorectal carcinoma
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