Making sense of incidents of violence and aggression: A constructivist grounded theory analysis of inpatient mental health nursing staff’s experiences

Introduction: While previous research explored nursing staff’s perceptions of violence and aggression thematically, there was a gap identified for in-depth analysis of the social processes and narratives which inform such perceptions. Aims: To explore the social processes underpinning narratives used to conceptualise violence and aggression. To identify which narratives support or threaten staff in constructing a positive professional identity. Method: Eight semi-structured interviews were completed with nursing and support staff who had worked, or currently worked in adult mental health inpatient contexts in the national health service of the United Kingdom. Analysis was conducted applying principles of constructivist grounded theory. Results: A model, ‘the impact of narratives of violence and aggression on professional identity construction’ was generated. This integrated four key theoretical codes: 1) constructing a positive nursing identity; 2) constructing the (un)deserving patient; 3) professional identity threats related to violence and aggression; and 4) mediating factors and support following violence and aggression. The theory explored the social processes which mediated the use of different narratives; and which narratives operated as protective or threating to the construction of a positive nursing identity. The theory further identified processes of support which could mitigate detrimental emotional and behavioural responses staff may experience following incidents. Narratives that contextualised violence and aggression in relation to restrictive ward environments, threat-responses, and patients’ previous experiences of trauma seemed to support empathy and understanding. Conclusion: Contextualising violence and aggression in terms of environment and distress in nursing teaching; staff training; and reflective practice may prove beneficial. Debriefs, supervisor support, and informal support from peers and senior team members seemed important following incidents. Mental health support may benefit staff whose emotional and behavioural responses to violence and aggression are acute, or long-lasting. Further research could support transferability and amplify underrepresented voices such as racialised staff

Zones of information in the AVIRIS spectra

To make the best use of Airborne Visible/Infrared Imaging Spectrometer (AVIRIS) data an investigator needs to know the ratio of signal to random variability or noise (S/N ratio). The signal is land-cover dependent and decreases with both wavelength and atmospheric absorption and random noise comprises sensor noise and intra-pixel variability. The three existing methods for estimating the S/N ratio are inadequate as typical laboratory methods inflate, while dark current and image methods deflate the S/N ratio. We propose a new procedure called the geostatistical method. It is based on the removal of periodic noise by notch filtering in the frequency domain and the isolation of sensor noise and intra-pixel variability using the semi-variogram. This procedure was applied easily and successfully to five sets of AVIRIS data from the 1987 flying season

Seasonal LAI in slash pine estimated with LANDSAT TM

The leaf area index (LAI, total area of leaves per unit area of ground) of most forest canopies varies throughout the year, yet for logistical reasons it is difficult to estimate anything more detailed than a seasonal maximum LAI. To determine if remotely sensed data can be used to estimate LAI seasonally, field measurements of LAI were compared to normalized difference vegetation index (NDVI) values derived using LANDSAT Thematic Mapper (TM) data, for 16 fertilized and control slash pine plots on 3 dates. Linear relationships existed between NDVI and LAI with R(sup 2) values of 0.35, 0.75, and 0.86 for February 1988, September 1988, and March, 1989, respectively. This is the first reported study in which NDVI is related to forest LAI recorded during the month of sensor overpass. Predictive relationships based on data from eight of the plots were used to estimate the LAI of the other eight plots with a root-mean-square error of 0.74 LAI, which is 15.6 percent of the mean LAI. This demonstrates the potential use of LANDSAT TM data for studying seasonal dynamics in forest canopies

Albedo climatology analysis and the determination of fractional cloud cover

Monthly and zonally averaged surface cover climatology data are presented which are used to construct monthly and zonally averaged surface albedos. The albedo transformations are then applied to the surface albedos, using solar zenith angles characteristic of the Nimbus 6 satellite local sampling times, to obtain albedos at the top of clear and totally cloud covered atmospheres. These albedos are then combined with measured albedo data to solve for the monthly and zonally averaged fractional cloud cover. The measured albedo data were obtained from the wide field of view channels of the Nimbus 6 Earth Radiation Budget experiment, and consequently the fractional cloud cover results are representative of the local sampling times. These fractional cloud cover results are compared with recent studies. The cloud cover results not only show peaks near the intertropical convergence zone, but the monthly migration of the position of these peaks follows general predictions of atmospheric circulation studies

Contesting a Place in the Sun: On Ideologies in Foreign Markets and Liabilities of Origin

This paper explores the role of ideology in attempts to influence public policy and in business representation in the EU-China solar panel anti-dumping dispute. It exposes the dynamics of international activity by emerging-economy multinationals, in this case from China, and their interactions in a developed-country context (the EU). Theoretically, the study also sheds light on the recent notion of ‘liability of origin’, in addition to the traditional concept of ‘liability of foreignness’ explored in international business research, in relation to firms’ market and political strategies and their institutional embeddedness in home and host countries. Through a qualitative analysis of primary and secondary material and interview data with key protagonists, we provide a detailed evolution of the case, the key actors involved and their positions, arguments and strategies. This illustrates the complexities involved in the interaction between markets and ideologies in the midst of debates regarding different forms of subsidy regimes for renewable energy, free trade versus protectionist tendencies by governments, and the economic and sustainability objectives of firms and societies. The case shows how relative newcomers to the EU market responded to overcome a direct threat to their business and became, with support from their home government, active participants in the public debate through interactions with local commercial partners and non-governmental organisations. Firms adopted relatively sophisticated strategies to reduce their liabilities vis-à-vis host-country institutions and local stakeholders, including collective action, to increase their legitimacy and reputation, and counter ideologically-based attacks. We also discuss implications and limitations

Observed Faraday Effects in Damped Lyman-Alpha Absorbers and Lyman Limit Systems: The Magnetised Environment of Galactic Building Blocks at Redshift=2

Protogalactic environments are typically identified using quasar absorption lines, and these galactic building blocks can manifest as Damped Lyman-Alpha Absorbers (DLAs) and Lyman Limit Systems (LLSs). We use radio observations of Faraday effects to test whether DLAs and LLSs host a magnetised medium, by combining DLA and LLS detections throughout the literature with 1.4 GHz polarization data from the NRAO VLA Sky Survey (NVSS). We obtain a control, a DLA, and a LLS sample consisting of 114, 19, and 27 lines-of-sight respectively - all of which are polarized at $\ge8\sigma$ to ensure Rician bias is negligible. Using a Bayesian framework, we are unable to detect either coherent or random magnetic fields in DLAs: the regular coherent magnetic fields within the DLAs must be $\le2.8$ $\mu$G, and the lack of depolarization is consistent with the weakly magnetised gas in DLAs being non-turbulent and quiescent. However, we find mild suggestive evidence that LLSs have coherent magnetic fields: after controlling for the redshift-distribution of our data, we find a 71.5% probability that LLSs have a higher RM than a control sample. We also find strong evidence that LLSs host random magnetic fields, with a 95.5% probability that LLS lines-of-sight have lower polarized fractions than a control sample. The regular coherent magnetic fields within the LLSs must be $\le2.4$ $\mu$G, and the magnetised gas must be highly turbulent with a typical scale on the order of $\approx5$-20 pc, which is similar to that of the Milky Way. This is consistent with the standard dynamo pedagogy, whereby magnetic fields in protogalaxies increase in coherence and strength as a function of cosmic time. Our results are consistent with a hierarchical galaxy formation scenario, with the DLAs, LLSs, and strong magnesium II (MgII) systems exploring three different stages of magnetic field evolution in galaxies.Comment: Submitted to Ap