bluuebunny/crossref_metadata_2025_split huggingface dataset:
Economic Rationality under Cognitive Load
Authors: Drichoutis Andreas C , Nayga Rodolfo M 
Published: May 2020

AbstractEconomic analysis assumes that consumer behaviour can be rationalised by a utility function. Previous research has shown that some consistency of choices with economic rationality can be captured by permanent cognitive ability. No other known study however has examined how a temporary load in subjects’ working memory can affect economic rationality. Using two controlled laboratory experiments, we exogenously vary cognitive load by asking subjects to memorise a number while they undertake an induced budget allocation task (Choi et al., 2007a, b). Using a number of manipulation checks, we verify that cognitive load has adverse effects on subjects’ performance in reasoning tasks. However, we find no effect in any of the goodness-of-fit measures that measure consistency of subjects’ choices with the Generalized Axiom of Revealed Preference (GARP), despite having a sample size large enough to detect even small differences between treatments with 80% power. We also find no effect on first-order stochastic dominance and risk preferences. Our finding suggests that economic rationality can be attained even when subjects are placed under temporary working memory load, despite the fact that the load has adverse effects in reasoning tasks.
A Weight Loss Intervention Augmented by a Wearable Device in Rural Older Adults With Obesity: A Feasibility Study
Authors: Batsis John A , Petersen Curtis L , Clark Matthew M , Cook Summer B , Lopez-Jimenez Francisco , Al-Nimr Rima I , Pidgeon Dawna , Kotz David , Mackenzie Todd A , Bartels Stephen J 
Published: May 2020

Abstract

Background
Older persons with obesity aged 65+ residing in rural areas have reduced access to weight management programs due to geographic isolation. The ability to integrate technology into health promotion interventions shows a potential to reach this underserved population.

Methods
A 12-week pilot in 28 older rural adults with obesity (body mass index [BMI] ≥ 30 kg/m2) was conducted at a community aging center. The intervention consisted of individualized, weekly dietitian visits focusing on behavior therapy and caloric restriction with twice weekly physical therapist-led group strengthening training classes in a community-based aging center. All participants were provided a Fitbit Flex 2. An aerobic activity prescription outside the strength training classes was provided.

Results
Mean age was 72.9 ± 5.3 years (82% female). Baseline BMI was 37.1 kg/m2, and waist circumference was 120.0 ± 33.0 cm. Mean weight loss (pre/post) was 4.6 ± 3.2 kg (4.9 ± 3.4%; p &lt; .001). Of the 40 eligible participants, 33 (75%) enrolled, and the completion rate was high (84.8%). Objective measures of physical function improved at follow-up: 6-minute walk test improved: 35.7 ± 41.2 m (p &lt; .001); gait speed improved: 0.10 ± 0.24 m/s (p = .04); and five-times sit-to-stand improved by 2.1 seconds (p &lt; .001). Subjective measures of late-life function improved (5.2 ± 7.1 points, p = .003), as did Patient-Reported Outcome Measurement Information Systems mental and physical health scores (5.0 ± 5.7 and 4.4 ± 5.0, both p &lt; .001). Participants wore their Fitbit 93.9% of all intervention days, and were overall satisfied with the trial (4.5/5.0, 1–5 low–high) and with Fitbit (4.0/5.0).

Conclusions
A multicomponent obesity intervention incorporating a wearable device is feasible and acceptable to older adults with obesity, and potentially holds promise in enhancing health.
Disability and Patterns of Leisure Participation Across the Life Course
Authors: Shandra Carrie L 
Published: May 2020

Abstract

Objectives
Patterns of healthy leisure are dependent upon age, but people with disabilities are particularly susceptible to passive and disengaged types of activities. This study evaluates how individuals with disabilities spend their time in passive, active, social, and isolated forms of leisure over the life course, and how these patterns vary by age.

Method
I analyze nationally representative data from 70,165 respondents ages 15 and older in the 2008, 2010, and 2012–2016 American Time Use Survey. Linear regression models estimate the association between disability and leisure time, net of self-rated health and sociodemographic controls. Interactions between age and disability are also evaluated, as well as the robustness of results by sensory, cognitive, physical, and multiple disability status.

Results
People with disabilities report significantly more, and poorer quality, leisure than people without disabilities. This includes more than 2 hr more time in passive leisure as well as a disproportionate amount of isolated leisure spent at home, alone. These differences are not fully explained by health and sociodemographic controls. The isolated leisure time of people with disabilities is most different from people without disabilities in later life—whereas differences in total and passive leisure time, by disability status, are greatest in midlife.

Discussion
People with disabilities spend less time in health-promoting forms of leisure at all ages, but these patterns are unique across midlife and older age.
Getting Along in Assisted Living: Quality of Relationships Between Family Members and Staff
Authors: Falzarano Francesca , Reid M Carrington , Schultz Leslie , Meador Rhoda H , Pillemer Karl 
Published: May 2020

Abstract

Background and Objectives
Assisted living facilities (ALFs) have quickly expanded as an alternative to nursing homes. Research on nursing homes has revealed problems in relationships between family members and staff. However, little is known about these relationships within ALFs. The purpose of the current study was to examine the prevalence of conflict and positive and negative interactions from the perspective of both family members and staff and to examine the effects of positive and negative aspects of the relationship on salient staff and family outcomes in ALFs.

Research Design and Methods
Data were collected from 252 family members and 472 staff members across 20 ALFs who participated in the Partners in Care in Assisted Living study. Participants completed measures including interpersonal conflict, depressive symptoms, perception of treatment, and stress related to caregiving.

Results
Conflict among family and staff members was found to be relatively low. For staff, interpersonal conflict and treatment by family members significantly predicted burnout and depressive symptoms. For families, only female gender significantly predicted burden. Subgroup analyses, however, indicated that the effect of interpersonal conflict was significantly associated with perceived caregiver burden among family members whose relative had dementia.

Discussion and Implications
Despite the relatively harmonious relationships among family–staff in ALFs, sources of conflict and negative interactions were identified, revealing the importance of collaborative relationships and the influence these relationships have on both family and staff outcomes. These findings can inform intervention efforts to improve family–staff interactions within ALFs.
Reduced ice mass loss and three-dimensional viscoelastic deformation in northern Antarctic Peninsula inferred from GPS
Authors: Samrat Nahidul Hoque , King Matt A , Watson Christopher , Hooper Andrew , Chen Xianyao , Barletta Valentina R , Bordoni Andrea 
Published: May 2020

SUMMARY
We consider the viscoelastic rheology of the solid Earth under the Antarctic Peninsula due to ice mass loss that commenced after the breakup of the Larsen-B ice shelf. We extend the previous analysis of nearby continuous GPS time-series to include five additional years and the additional consideration of the horizontal components of deformation. They show strong uplift from ∼2002 to 2011 followed by reduced uplift rates to 2018. Modelling the GPS-derived uplift as a viscoelastic response to ongoing regional ice unloading from a new ice model confirms earlier estimates of low upper-mantle viscosities of ∼0.3–3 × 1018 Pa s in this region but allows a wide range of elastic lithosphere thickness. The observed and modelled north coordinate component shows little nonlinear variation due to the location of ice mass change to the east of the GPS sites. However, comparison of the observed and modelled east coordinate component constrains the upper-mantle viscosity to be less than ∼9 × 1018 Pa s, consistent with the viscosity range suggested by the uplift rates alone and providing important, largely independent, confirmation of that result. Our horizontal analysis showed only marginal sensitivity to modelled lithospheric thickness. The results for the horizontal components are sensitive to the adopted plate rotation model, with the estimate based on ITRF2014 suggesting that the sum of residual plate motion and pre-2002 glacial isostatic adjustment is likely less than ∼±0.5 mm yr−1 in the east component.
Variational integrators for stochastic dissipative Hamiltonian systems
Authors: Kraus Michael , Tyranowski Tomasz M 
Published: May 2020

Abstract
Variational integrators are derived for structure-preserving simulation of stochastic forced Hamiltonian systems. The derivation is based on a stochastic discrete Hamiltonian, which approximates a type-II stochastic generating function for the stochastic flow of the Hamiltonian system. The generating function is obtained by introducing an appropriate stochastic action functional and considering a stochastic generalization of the deterministic Lagrange–d’Alembert principle. Our approach presents a general methodology to derive new structure-preserving numerical schemes. The resulting integrators satisfy a discrete version of the stochastic Lagrange–d’Alembert principle, and in the presence of symmetries, they also satisfy a discrete counterpart of Noether’s theorem. Furthermore, mean-square and weak Lagrange–d’Alembert Runge–Kutta methods are proposed and tested numerically to demonstrate their superior long-time numerical stability and energy behaviour compared to nongeometric methods. The Vlasov–Fokker–Planck equation is considered as one of the numerical test cases, and a new geometric approach to collisional kinetic plasmas is presented.
Human factors and ergonomics at time of crises: the Italian experience coping with COVID-19
Authors: Albolino Sara , Dagliana Giulia , Tanzini Michela , Toccafondi Giulio , Beleffi Elena , Ranzani Francesco , Flore Elisabetta 
Published: May 2020

Abstract
Several of the key organizational issues that we have had to face with the emergence of COVID-19 crisis are related to human factors/ergonomics (HFE) and the safety culture. During the crisis the main activities of the healthcare services have been profoundly affected. Patient safety and risk management units have also experienced the need to adapt rapidly. What can we do as HFE experts, now that the scenario has completely changed? We contend that: (a) we can favour and support the heuristics that are applied to manage the load of psycho-cognitive stress. (b) We can observe, collect strategies and develop analytic schemes, thereby creating a memory of the organization for improvement in the future. (c) And we can support in educating and engaging the public. This crisis has forced the community of healthcare experts to broaden their reflections: for the future to come, our communities of experts in the field of risk management HF/E, quality and safety of care and public health should play together an important role from the very beginning, from the time of peace.
Brexit: The Y2K of This Generation?
Authors: Hamilton Johanna 
Published: May 2020

Abstract
Charlotte Walker-Osborn, MBCS, is a Partner and International Head of both the Artificial Intelligence Group and the Technology Sector at the global law firm, Eversheds Sutherland. Talking on the first working day after Brexit, she tells Johanna Hamilton AMBCS her thoughts on the UK as one of the global leaders in technology and how we must keep the momentum going.
Artificial Intelligence: Creating Post-Human Beings
Authors: Melsom Blair 
Published: May 2020

Abstract
What does it mean to be human? That’s the existential question award-winning artist Cecilie Waagner Falkenstrøm has lately been using machine learning technologies to explore. Here, she talks to Blair Melsom AMBCS about how art, science fiction and algorithms converge to provoke thoughts on the ethics of future humanised technology.
Mangiferin alleviates endoplasmic reticulum stress in acute liver injury by regulating the miR-20a/miR-101a-Nrf2 axis
Authors: Li Shaoxun , Jin Shuanghong , Chen Weilai , Yu Jiake , Fang Peipei , Zhou Guangyao , Li Jie , Jin Lingxiang , Chen Yiping , Chen Ping , Pan Chenwei 
Published: May 2020

Abstract
This study aimed to investigate the mechanism of mangiferin on regulating endoplasmic reticulum (ER) stress in acute liver injury. The mouse model of acute liver injury was established by injection of LPS/D-GalN. The primary mouse hepatocytes were stimulated with LPS to induce the in vitro model. The effect of miR-20a/101a on the luciferase activity of Nrf2 3′-UTR was assessed by luciferase reporter assay. Mangiferin improved the liver function, inhibited the oxidative stress and ER stress and down-regulated the expressions of miR-20a and miR-101a in LPS/D-GalN-induced mice and LPS-induced hepatocytes. The knockdown of miR-20a and miR-101a co-operatively alleviated ER stress of LPS-induced hepatocytes. miR-20a and miR-101a both targeted Nrf2 and the over-expression of miR-20a or miR-101a decreased Nrf2 protein level, while their silences increased Nrf2 protein level. The silence of miR-20a and miR-101a promoted Nrf2 expression and inhibited the ER stress in LPS-induced hepatocytes, while the knockdown of Nrf2 reversed these effects. The over-expression of miR-20a and miR-101a eliminated the effects of mangiferin on Nrf2 protein level and ER stress in LPS-induced hepatocytes and Nrf2 over-expression altered these trends. Our findings suggest that mangiferin alleviates ER stress in acute liver injury by regulating the miR-20a/miR-101a-Nrf2 axis.
Never Solo: Gratitude for My Academic Journey
Authors: Childress James F 
Published: May 2020

AbstractTom Beauchamp and I were asked by the editors of The Journal of Medicine and Philosophy to prepare “intellectual autobiographies,” with particular attention to sources and influences on our work, including but not limited to Principles of Biomedical Ethics. Of course, it is artificial and even impossible to try fully to separate the “intellectual” from other aspects of our lives. So, while emphasizing the “intellectual” aspects of my autobiography, I have attended to other aspects, too. The huge debts of gratitude I owe also mix the “intellectual” and other aspects of life.
Magnetic-reconnection-heated corona in active galactic nuclei: refined disc–corona model and application to broad-band radiation
Authors: Cheng Huaqing , Liu B F , Liu Jieying , Liu Zhu , Qiao Erlin , Yuan Weimin 
Published: May 2020

ABSTRACT
A long-standing question in active galactic nucleus (AGN) research is how the corona is heated up to produce X-ray radiation much stronger than that arising from the viscous heating within the corona. In this paper, we carry out detailed investigations of magnetic-reconnection heating to the corona, specifically, studying how the disc and corona are self-consistently coupled with the magnetic field, and how the emergent spectra depend on the fundamental parameters of AGN. It is shown that diverse spectral shapes and luminosities over a broad bandpass from optical to X-ray can be produced from the coupled disc and corona within a limited range of the black hole mass, accretion rate, and magnetic field strength. The relative strength of X-ray emission with respect to optical/ultraviolet (UV) depends on the strength of the magnetic field in the disc, which, together with accretion rate, determines the fraction of accretion energy transported and released in the corona. This refined disc–corona model is then applied to reproduce the broad-band spectral energy distributions (SEDs) of a sample of 20 bright local AGNs observed simultaneously in X-ray and optical/UV. We find that, in general, the overall observed broad-band SEDs can be reasonably reproduced, except for rather hard X-ray spectral shapes in some objects. The radiation pressure-dominant region, as previously predicted for the standard accretion disc in AGN, disappears for strong X-ray sources, revealing that AGN accretion discs are indeed commonly stable as observed. Our study suggests the disc–corona coupling model involving magnetic fields to be a promising approach for understanding the broad-band spectra of bright AGNs.
A detailed look at the stellar populations in green valley galaxies
Authors: Angthopo James , Ferreras Ignacio , Silk Joseph 
Published: May 2020

ABSTRACT
The green valley (GV) represents an important transitional state from actively star-forming galaxies to passively evolving systems. Its traditional definition, based on colour, rests on a number of assumptions that can be subjected to non-trivial systematics. In Angthopo, Ferreras & Silk (2019), we proposed a new definition of the GV based on the 4000 Å break strength. In this paper, we explore in detail the properties of the underlying stellar populations by use of ∼230 thousand high-quality spectra from the Sloan Digital Sky Survey (SDSS), contrasting our results with a traditional approach via dust-corrected colours. We explore high-quality stacked SDSS spectra, and find a population trend that suggests a substantial difference between low- and high-mass galaxies, with the former featuring younger populations with star formation quenching, and the latter showing older (post-quenching) populations that include rejuvenation events. Subtle but measurable differences are found between a colour-based approach and our definition, especially as our selection of GV galaxies produces a cleaner ‘stratification’ of the GV, with more homogeneous population properties within sections of the GV. Our definition based on 4000 Å break strength gives a clean representation of the transition to quiescence, easily measurable in the upcoming and future spectroscopic surveys.
Is the gap in the DS Tau disc hiding a planet?
Authors: Veronesi Benedetta , Ragusa Enrico , Lodato Giuseppe , Aly Hossam , Pinte Christophe , Price Daniel J , Long Feng , Herczeg Gregory J , Christiaens Valentin 
Published: May 2020

ABSTRACT
Recent millimetre-wavelength surveys performed with the Atacama Large Millimeter Array (ALMA) have revealed protoplanetary discs characterized by rings and gaps. A possible explanation for the origin of such rings is the tidal interaction with an unseen planetary companion. The protoplanetary disc around DS Tau shows a wide gap in the ALMA observation at 1.3 mm. We construct a hydrodynamical model for the dust continuum observed by ALMA assuming the observed gap is carved by a planet between one and five Jupiter masses. We fit the shape of the radial intensity profile along the disc major axis varying the planet mass, the dust disc mass, and the evolution time of the system. The best-fitting model is obtained for a planet with $M_{\rm p}=3.5\, \mathrm{ M}_{\rm Jup}$ and a disc with $M_{\rm dust}= 9.6\,\times \,10^{-5}\, \mathrm{ M}_{\odot }$. Starting from this result, we also compute the expected signature of the planet in the gas kinematics, as traced by CO emission. We find that such a signature (in the form of a ‘kink’ in the channel maps) could be observed by ALMA with a velocity resolution between $0.2-0.5\, \rm {kms}^{-1}$ and a beam size between 30 and 50 mas.
Observing the earliest moments of supernovae using strong gravitational lenses
Authors: Foxley-Marrable Max , Collett Thomas E , Frohmaier Chris , Goldstein Daniel A , Kasen Daniel , Swann Elizabeth , Bacon David 
Published: May 2020

ABSTRACT
We determine the viability of exploiting lensing time delays to observe strongly gravitationally lensed supernovae (gLSNe) from first light. Assuming a plausible discovery strategy, the Legacy Survey of Space and Time (LSST) and the Zwicky Transient Facility (ZTF) will discover ∼110 and ∼1 systems per year before the supernova (SN) explosion in the final image, respectively. Systems will be identified $11.7^{+29.8}_{-9.3}$ d before the final explosion. We then explore the possibility of performing early-time observations for Type IIP and Type Ia SNe in LSST-discovered systems. Using a simulated Type IIP explosion, we predict that the shock breakout in one trailing image per year will peak at ≲24.1 mag (≲23.3) in the B-band (F218W), however evolving over a time-scale of ∼30 min. Using an analytic model of Type Ia companion interaction, we find that in the B-band we should observe at least one shock cooling emission event per year that peaks at ≲26.3 mag (≲29.6) assuming all Type Ia gLSNe have a 1 M⊙ red giant (main sequence) companion. We perform Bayesian analysis to investigate how well deep observations with 1 h exposures on the European Extremely Large Telescope would discriminate between Type Ia progenitor populations. We find that if all Type Ia SNe evolved from the double-degenerate channel, then observations of the lack of early blue flux in 10 (50) trailing images would rule out more than 27 per cent (19 per cent) of the population having 1 M⊙ main sequence companions at 95 per cent confidence.
Photoionizing feedback in spiral arm molecular clouds
Authors: Bending Thomas J R , Dobbs Clare L , Bate Matthew R 
Published: May 2020

ABSTRACT
We present simulations of a 500 pc2 region, containing gas of mass 4 × 106 M⊙, extracted from an entire spiral galaxy simulation, scaled up in resolution, including photoionizing feedback from stars of mass &gt;18 M⊙. Our region is evolved for 10 Myr and shows clustered star formation along the arm generating ≈ 5000 cluster sink particles ≈ 5 per cent of which contain at least one of the ≈ 4000 stars of mass &gt;18 M⊙. Photoionization has a noticeable effect on the gas in the region, producing ionized cavities and leading to dense features at the edge of the H ii regions. Compared to the no-feedback case, photoionization produces a larger total mass of clouds and clumps, with around twice as many such objects, which are individually smaller and more broken up. After this we see a rapid decrease in the total mass in clouds and the number of clouds. Unlike studies of isolated clouds, our simulations follow the long-range effects of ionization, with some already dense gas, becoming compressed from multiple sides by neighbouring H ii regions. This causes star formation that is both accelerated and partially displaced throughout the spiral arm with up to 30 per cent of our cluster sink particle mass forming at distances &gt;5 pc from sites of sink formation in the absence of feedback. At later times, the star formation rate decreases to below that of the no-feedback case.