ORCID Profile
0000-0003-0064-4060
Current Organisations
American Museum of Natural History
,
Flatiron Institute
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Publisher: EDP Sciences
Date: 03-2010
Publisher: Oxford University Press (OUP)
Date: 04-2010
Publisher: American Astronomical Society
Date: 06-12-2012
Publisher: American Astronomical Society
Date: 21-10-2020
Publisher: American Astronomical Society
Date: 09-09-2010
Publisher: American Astronomical Society
Date: 18-02-2015
Publisher: Cambridge University Press (CUP)
Date: 07-2011
DOI: 10.1017/S1743921311028298
Abstract: The common envelope interaction between a giant star and a stellar or substellar companion is at the origin of several compact binary classes, including the progenitors of Type Ia SN. A common envelope is also what will happen when the Sun expands and swallows its planets as far out as Jupiter. The basic idea and physics of the common envelope interaction has been known since the 1970s. However, the outcome of a common envelope interaction - what systems survive and what their parameters are - depends sensitively on the details of the engagement. To advance our knowledge of the common envelope interaction between stars and their stellar and substellar companions, we have carried out a series of simulations with Eulerian, grid-based and Lagrangian, smoothed particle hydrodynamics codes between a 0.88-M ⊙ , 85-R ⊙ , red giant branch star and companions in the mass range 0.1-0.9 M ⊙ . In this contribution, we will discuss the reliability of the techniques, the physics that is not included in the codes but is likely important, the state of the ejected common envelope, and the final binary separation. We also carry out a comparison with the observations. Finally, we discuss the common envelope efficiency parameter, α and the survival of planets.
Publisher: American Astronomical Society
Date: 20-04-2012
Publisher: Wiley
Date: 09-03-2020
DOI: 10.1111/INM.12711
Publisher: Elsevier BV
Date: 02-2020
Publisher: Cambridge University Press (CUP)
Date: 11-2009
DOI: 10.1017/S1743921310009956
Abstract: We have performed high-resolution three-dimensional simulations of turbulent interstellar gas that for the first time self-consistently follow its coupled thermal, chemical and dynamical evolution. Our simulations have allowed us to quantify the formation timescales for the most important molecules found in giant molecular clouds (H 2 , CO), as well as their spatial distribution within the clouds. Our results are consistent with models in which molecular clouds form quickly, within 1–2 turbulent crossing times, and emphasize the crucial role of density inhomogeneities in determining the chemical structure of the clouds.
Publisher: American Astronomical Society
Date: 19-10-2012
Publisher: American Astronomical Society
Date: 12-2020
Abstract: Turbulence is a key process in many fields of astrophysics. Advances in numerical simulations of fluids over the last several decades have revolutionized our understanding of turbulence and related processes such as star formation and cosmic ray propagation. However, data from numerical simulations of astrophysical turbulence are often not made public. We introduce a new simulation-oriented database for the astronomical community: the Catalogue for Astrophysical Turbulence Simulations (CATS), located at www.mhdturbulence.com . CATS includes magnetohydrodynamic (MHD) turbulent box simulation data products generated by the public codes athena++ , arepo , enzo, and flash . CATS also includes several synthetic observational data sets, such as turbulent HI data cubes. We also include measured power spectra and three-point correlation functions from some of these data. We discuss the importance of open-source statistical and visualization tools for the analysis of turbulence simulations such as those found in CATS.
Publisher: American Astronomical Society
Date: 16-05-2014
Publisher: Oxford University Press (OUP)
Date: 13-01-2011
Publisher: EDP Sciences
Date: 10-2009
Publisher: Oxford University Press (OUP)
Date: 09-05-2013
DOI: 10.1093/MNRAS/STT474
Publisher: Elsevier BV
Date: 09-2019
DOI: 10.1016/J.JBTEP.2019.02.007
Abstract: The HospitalitY (HY) intervention is a novel recovery oriented intervention for people with psychotic disorders in which peer support and home-based skill training are combined in an eating club. A feasibility study was conducted to inform a subsequent randomised trial. This study evaluated three eating clubs consisting of nine participants and three nurses. Semi-structured interviews and pre- and post-intervention measures (18 weeks) of personal recovery, quality of life and functioning were used to evaluate the intervention. Participants received in idual skills training, guided by self-identified goals, while organising a dinner at their home. During each dinner, participants engaged in peer support, led by a nurse. In personal interviews participants reported positive effects on social support, loneliness, and self-esteem. Nurses reported that participants became more independent during the intervention. Participants were satisfied with the HY-intervention (attendance rate = 93%). All were able to organise a dinner for their peers with practical support from a nurse. Pre- and post -intervention measures did not show important improvements. Outcome measures were not sensitive to change, likely due to a short intervention period (5 months) and a limited number of participants (N = 9). Using Goal Attainment Scaling to evaluate personal goals turned out to be unfeasible. The HY-intervention is feasible for participants with psychotic disorders. This study refined intervention and research design for the upcoming multicentre randomised controlled trial. We expect that the Experience S ling Method will be more sensitive to changes in recovery outcomes than regular pre-post intervention measures.
Publisher: Elsevier BV
Date: 09-2019
DOI: 10.1016/J.PSYCHRES.2019.03.012
Abstract: This meta-analysis aims to evaluate the effects of different types of physical exercise (PE) on negative symptoms in schizophrenia patients. Mind-body exercise (MBE), aerobic exercise (AE) and resistance training (RT) will be investigated. The Cochrane Library, Medline, Embase and PsycINFO were searched from their inception until April 26, 2018. Randomized controlled trials comparing PE with any control group in patients with schizophrenia were included when negative symptoms had been assessed. This meta-analysis was conducted according to the PRISMA guidelines. The methodological quality of the included studies was assessed with the Cochrane Risk of Bias assessment tool. Moderator, sensitivity, and meta regression analyses were conducted to explore causes of heterogeneity and impact of study quality. We included 22 studies (N = 1249). The overall methodological quality was poor. The meta-analysis (random effects model) showed a medium significant effect in favor of any PE intervention (Hedges' g = 0.434, 95% CI = 0.196-0.671) versus any control condition. MBE and AE respectively showed a medium significant effect (Hedges' g = 0.461) and a small significant effect (Hedges' g = 0.341) versus any control condition. The effect of RT could not be examined. The overall heterogeneity was high (I This meta-analysis demonstrated that PE could be a promising intervention in the treatment of negative symptoms. However, the quality of the included studies was low and heterogeneity was high, which makes it impossible to make a clear recommendation. Therefore, results should be interpreted with care.
Publisher: American Astronomical Society
Date: 13-12-2011
Publisher: Oxford University Press (OUP)
Date: 30-11-2015
Publisher: American Astronomical Society
Date: 23-07-2018
Publisher: American Astronomical Society
Date: 10-11-2017
Location: United States of America
No related grants have been discovered for Mordecai-Mark Mac Low.