12,696 research outputs found

    The New Norm: Hedonic Adaptation Phase

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    Never before has management services been so vital to enterprises. It is incumbent upon our profession to ensure that workers have a safe environment and that activities do not result in harm – physical and psychological. COVID-19 has triggered a paradigm shift in society and work practices that now challenge the very bedrock of what we regard as normality. For instance, working from home (wfh) has identified numerous challenges for both workers and organisations1. What is also evident, is that the once strong support for stopping the spread of COVID-19 as a priority over economic recovery has swung considerably – even though numbers of infections has continued to rise. However, after some nine months of embracing the pandemic’s impact on virtually every facet of life, the health and wellbeing of people is now seriously at risk. Mental health-related compensation claims have risen 80% since COVID-19; and during this period more than a million Australians have sought mental health treatment, representing a 36% increase. This initial increase in psychological problems was to be expected. Indeed, with any significant change to hitherto embedded practices, there are invariably emotional reactions: the classic and recognisable fright, fear, fight, flight. However, the likelihood is that the change becomes normalised: described by the notion of hedonic adaptation – where the impact of a change is absorbed and becomes the ‘new norm’. For many, the changes have become accepted, but for others there is emotional resistance that could develop into psychological withdrawal. Meanwhile, what then are the lessons to be learned and what actions are required? What additional responsibilities must organisations bear to support staff? What leadership style is needed? What should be the organisation’s communication strategy? What must organisations do to minimise psychological health issues

    Anomaly Detection in Paleoclimate Records using Permutation Entropy

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    Permutation entropy techniques can be useful in identifying anomalies in paleoclimate data records, including noise, outliers, and post-processing issues. We demonstrate this using weighted and unweighted permutation entropy of water-isotope records in a deep polar ice core. In one region of these isotope records, our previous calculations revealed an abrupt change in the complexity of the traces: specifically, in the amount of new information that appeared at every time step. We conjectured that this effect was due to noise introduced by an older laboratory instrument. In this paper, we validate that conjecture by re-analyzing a section of the ice core using a more-advanced version of the laboratory instrument. The anomalous noise levels are absent from the permutation entropy traces of the new data. In other sections of the core, we show that permutation entropy techniques can be used to identify anomalies in the raw data that are not associated with climatic or glaciological processes, but rather effects occurring during field work, laboratory analysis, or data post-processing. These examples make it clear that permutation entropy is a useful forensic tool for identifying sections of data that require targeted re-analysis---and can even be useful in guiding that analysis.Comment: 15 pages, 7 figure

    Exploring creative pedagogical practices in secondary visual arts programmes in Ghana

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    Secondary visual arts education provides learners with opportunities to develop critical thinking, and their creative potential, as part of their personal growth. This development happens when visual arts teachers actively integrate creative pedagogies to target creative thinking in learners. Ghana\u27s 2019 National Pre-tertiary Curriculum Framework has added creativity as one goal for all learners. This research study explores teachers\u27 perceptions and use of creative pedagogies as part of implementing this creativity into their teaching. A multi-site qualitative case study was conducted in government secondary schools within Sekondi-Takoradi, Ghana, and data were gathered from interviews and participant observations. The 16 cases specifically examined creative pedagogies in practice in the secondary visual arts programme, as the subject of visual arts is commensurate with developing creativity. The study revealed that teachers\u27 pedagogical perceptions of developing creativity do not align with the actual pedagogies they employ, with teachers being observed to emphasise teacher-centred pedagogies. It is suggested that the integration of creative pedagogies should be contextualised in Ghana\u27s secondary visual arts programme, in order to support teachers to meet the goal of creativity development for all learners

    On the Exchange of Kinetic and Magnetic Energy Between Clouds and the Interstellar Medium

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    We investigate, through 2D MHD numerical simulations, the interaction of a uniform magnetic field oblique to a moving interstellar cloud. In particular we explore the transformation of cloud kinetic energy into magnetic energy as a result of field line stretching. Some previous simulations have emphasized the possible dynamical importance of a ``magnetic shield'' formed around clouds when the magnetic field is perpendicular to the cloud motion (Jones et al. 1996, Miniati et al. 1998). It was not clear, however, how dependent those findings were to the assumed field configuration and cloud properties. To expand our understanding of this effect, we examine several new cases by varing the magnetic field orientation angle with respect to the cloud motion (\theta), the cloud-background density contrast, and the cloud Mach number. We show that in 2D and with \theta large enough, the magnetic field tension can become dominant in the dynamics of the motion of high density contrast, low Mach number clouds. In such cases a significant fraction of cloud kinetic energy can be transformed into magnetic energy with the magnetic pressure at the cloud nose exceeding the ram pressure of the impinging flow. We derive a characteristic timescale for this process of energy ``conversion''. We find also that unless the cloud motion is highly aligned to the magnetic field, reconnection through tearing mode instabilities in the cloud wake limit the formation of a strong flux rope feature following the cloud. Finally we attempt to interpret some observational properties of the magnetic field in view of our results.Comment: 24 pages in aaspp4 Latex and 7 figures. Accepted for publication in The Astrophysical Journa

    A Case of Treatment Resistance and Complications in a Patient with Stiff Person Syndrome and Cerebellar Ataxia

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    BACKGROUND: Antibodies against glutamic acid decarboxylase (GAD) are associated with Stiff Person Syndrome (SPS). CASE REPORT: A 50-year-old woman presented with symptoms progressed over 9 years, resulting in a cerebellar ataxia and right upper limb tremor. Investigations revealed elevated serum and CSF anti-GAD antibody titres (98.6 and 53.4 Ό/ml, respectively). Treatment included intravenous immunoglobulin and immunomodulation (infliximab and rituximab), improving her stiffness, but with no impact on the ataxia-related symptoms. Subsequent high-dose steroids led to diabetic ketoacidosis and unmasking of an insulin-dependent diabetes mellitus. DISCUSSION: This case illustrates several key features: (1) the combined clinical picture of SPS and cerebellar ataxia is a rare phenotype associated with anti-GAD antibodies; (2) the cerebellar ataxia described was progressive and poorly responsive to immunomodulatory therapy; and (3) the potential for development of further autoimmune sequelae in response to immunosuppression, namely, the development of insulin-dependent diabetes in response to treatment with high-dose oral steroids

    Decoding Guilty Minds

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    A central tenet of Anglo-American penal law is that in order for an actor to be found criminally liable, a proscribed act must be accompanied by a guilty mind. While it is easy to understand the importance of this principle in theory, in practice it requires jurors and judges to decide what a person was thinking months or years earlier at the time of the alleged offense, either about the results of his conduct or about some elemental fact (such as whether the briefcase he is carrying contains drugs). Despite the central importance of this task in the administration of criminal justice, there has been very little research investigating how people go about making these decisions, and how these decisions relate to their intuitions about culpability. Understanding the cognitive mechanisms that govern this task is important for the law, not only to explore the possibility of systemic biases and errors in attributions of culpability but also to probe the intuitions that underlie them. In a set of six exploratory studies reported here, we examine the way in which individuals infer others’ legally relevant mental states about elemental facts, using the framework established over fifty years ago by the Model Penal Code (“MPC”). The widely adopted MPC framework delineates and defines the four now-familiar culpable mental states: purpose, knowledge, recklessness, and negligence. Our studies reveal that with little to no training, jury-eligible Americans can apply the MPC framework in a manner that is largely congruent with the basic assumptions of the MPC’s mental state hierarchy. However, our results also indicate that subjects’ intuitions about the level of culpability warranting criminal punishment diverge significantly from prevailing legal practice; subjects tend to regard recklessness as a sufficient basis for punishment under circumstances where the legislatures and courts tend to require knowledge

    2MASS Galaxies in the Fornax Cluster Spectroscopic Survey

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    The Fornax Cluster Spectroscopic Survey (FCSS) is an all-object survey of a region around the Fornax Cluster of galaxies undertaken using the 2dF multi-object spectrograph on the Anglo-Australian Telescope. Its aim was to obtain spectra for a complete sample of all objects with 16.5 < b_j < 19.7 irrespective of their morphology (i.e. including `stars', `galaxies' and `merged' images). We explore the extent to which (nearby) cluster galaxies are present in 2MASS. We consider the reasons for the omission of 2MASS galaxies from the FCSS and vice versa. We consider the intersection (2.9 square degrees on the sky) of our data set with the infra-red 2 Micron All-Sky Survey (2MASS), using both the 2MASS Extended Source Catalogue (XSC) and the Point Source Catalogue (PSC). We match all the XSC objects to FCSS counterparts by position and also extract a sample of galaxies, selected by their FCSS redshifts, from the PSC. We confirm that all 114 XSC objects in the overlap sample are galaxies, on the basis of their FCSS velocities. A total of 23 Fornax Cluster galaxies appear in the matched data, while, as expected, the remainder of the sample lie at redshifts out to z = 0.2 (the spectra show that 61% are early type galaxies, 18% are intermediate types and 21% are strongly star forming).The PSC sample turns out to contain twice as many galaxies as does the XSC. However, only one of these 225 galaxies is a (dwarf) cluster member. On the other hand, galaxies which are unresolved in the 2MASS data (though almost all are resolved in the optical) amount to 71% of the non-cluster galaxies with 2MASS detections and have redshifts out to z=0.32.Comment: 5 pages, accepted by A&A, resubmitted due to missing reference
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