262 research outputs found

    Highly efficient Localisation utilising Weightless neural systems

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    Efficient localisation is a highly desirable property for an autonomous navigation system. Weightless neural networks offer a real-time approach to robotics applications by reducing hardware and software requirements for pattern recognition techniques. Such networks offer the potential for objects, structures, routes and locations to be easily identified and maps constructed from fused limited sensor data as information becomes available. We show that in the absence of concise and complex information, localisation can be obtained using simple algorithms from data with inherent uncertainties using a combination of Genetic Algorithm techniques applied to a Weightless Neural Architecture

    Measuring positive memories of home and family during childhood: The development and initial validation of the ‘Memories of Home and Family Scale’

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    There is a burgeoning evidence base highlighting the positive influence of benevolent childhood experiences (BCEs), even in the context of adversity. However, few measures are available to assess BCEs. The current study sought to develop and validate a measure which assesses positive recollections of experiences and emotions at home and with family during childhood called the ‘Memories of Home and Family Scale’(MHFS). Confirmatory factor analysis (CFA) was employed to test the latent structure of the preliminary MHFS item scores in a sample of university students from the United Kingdom (N = 624). Following selection of the best-fitting model and final items for inclusion in the scale, total and subscale scores were correlated with a range of mental health outcomes. CFA results indicated that the latent structure of the MHFS items was best represented by a correlated six-factor first-order model. The final MHFS demonstrated high levels of internal reliability and convergent validity

    Measuring Positive Memories of Home and Family During Childhood: The Development and Initial Validation of the ‘Memories of Home and Family Scale’

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    Purpose: There are multiple studies illustrating how benevolent childhood experiences (BCEs) are associated with more favorable health outcomes across the life-course, even in the context of adverse childhood experiences (ACEs). Despite this, few measures are available to assess BCEs. Existing measures include a narrow spectrum of objective BCEs and are limited by the use of binary response categories while few investigate BCEs specifically related to the family and home environment. Thus, the current study sought to develop and validate a measure which assesses positive recollections of experiences and emotions at home and with family during childhood called the ‘Memories of Home and Family Scale’(MHFS). Methods: Items were generated which captured a diverse range of positive emotions and experiences related to home and family life during childhood. Confirmatory factor analysis (CFA) was employed to test the latent structure of the preliminary MHFS item scores in a sample of university students from the United Kingdom (N=624). Following selection of the best-fitting model and final items for inclusion in the scale, total and subscale scores were correlated with a range of mental health outcomes. Results: The results from the CFA indicated that the latent structure of the MHFS items was best represented by a correlated six-factor first-order model. The final MHFS demonstrated high levels of internal reliability and convergent validity. Conclusion: The MHFS is a 28-item multidimensional measure which assesses positive memories of home and family during childhood across six dimensions including valued, independence, support, security, wellness, growth and meaning

    Does requiring trauma exposure affect rates of ICD-11 PTSD and complex PTSD? Implications for DSM-5

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    Objective: There is little evidence that posttraumatic stress disorder (PTSD) is more likely to follow traumatic events defined by Criterion A than non-Criterion A stressors. Criterion A events might have greater predictive validity for ICD-11 PTSD which is a condition more narrowly defined by core features. We evaluated the impact of using Criterion A, an ‘expanded’ trauma definition in line with ICD-11 guidelines, and no exposure criterion on rates of ICD-11 PTSD and Complex PTSD (CPTSD). We also assessed if five psychologically threatening events included in the expanded definition were as strongly associated with PTSD and CPTSD as ‘standard’ Criterion A events. Method: A nationally representative sample from Ireland (N = 1,020) completed self-report measures. Results: Most participants were trauma-exposed based on Criterion A (82%) and the ‘expanded’ (88%) criterion. When no exposure criterion was used, 13.7% met diagnostic requirements for PTSD or CPTSD; 13.2% when the expanded criterion was used, and 13.2% when Criterion A was used. The five psychologically threatening events were as strongly associated with PTSD and CPTSD as the Criterion A events. In a multivariate analysis, only the psychologically threatening events were significantly associated with PTSD (stalking) and CPTSD (bullying, emotional abuse, and neglect). Conclusions: Certain non-Criterion A events involving extreme fear and horror should be considered traumatic. The ICD-11 approach of providing clinical guidance rather than a formal definition offers a viable solution to some of the problems associated with the current and previous attempts to define traumatic exposure

    Deep Underground Science and Engineering Laboratory - Preliminary Design Report

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    The DUSEL Project has produced the Preliminary Design of the Deep Underground Science and Engineering Laboratory (DUSEL) at the rehabilitated former Homestake mine in South Dakota. The Facility design calls for, on the surface, two new buildings - one a visitor and education center, the other an experiment assembly hall - and multiple repurposed existing buildings. To support underground research activities, the design includes two laboratory modules and additional spaces at a level 4,850 feet underground for physics, biology, engineering, and Earth science experiments. On the same level, the design includes a Department of Energy-shepherded Large Cavity supporting the Long Baseline Neutrino Experiment. At the 7,400-feet level, the design incorporates one laboratory module and additional spaces for physics and Earth science efforts. With input from some 25 science and engineering collaborations, the Project has designed critical experimental space and infrastructure needs, including space for a suite of multidisciplinary experiments in a laboratory whose projected life span is at least 30 years. From these experiments, a critical suite of experiments is outlined, whose construction will be funded along with the facility. The Facility design permits expansion and evolution, as may be driven by future science requirements, and enables participation by other agencies. The design leverages South Dakota's substantial investment in facility infrastructure, risk retirement, and operation of its Sanford Laboratory at Homestake. The Project is planning education and outreach programs, and has initiated efforts to establish regional partnerships with underserved populations - regional American Indian and rural populations
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