Multi-dimensional modelling for the national mapping agency: a discussion of initial ideas, considerations, and challenges

The Ordnance Survey, the National Mapping Agency (NMA) for Great Britain, has recently begun to research the possible extension of its 2-dimensional geographic information into a multi-dimensional environment. Such a move creates a number of data creation and storage issues which the NMA must consider. Many of these issues are highly relevant to all NMA’s and their customers alike, and are presented and explored here. This paper offers a discussion of initial considerations which NMA’s face in the creation of multi-dimensional datasets. Such issues include assessing which objects should be mapped in 3 dimensions by a National Mapping Agency, what should be sensibly represented dynamically, and whether resolution of multi-dimensional models should change over space. This paper also offers some preliminary suggestions for the optimal creation method for any future enhanced national height model for the Ordnance Survey. This discussion includes examples of problem areas and issues in both the extraction of 3-D data and in the topological reconstruction of such. 3-D feature extraction is not a new problem. However, the degree of automation which may be achieved and the suitability of current techniques for NMA’s remains a largely unchartered research area, which this research aims to tackle. The issues presented in this paper require immediate research, and if solved adequately would mark a cartographic paradigm shift in the communication of geographic information – and could signify the beginning of the way in which NMA’s both present and interact with their customers in the future

Design verification of SIFT

A SIFT reliable aircraft control computer system, designed to meet the ultrahigh reliability required for safety critical flight control applications by use of processor replications and voting, was constructed for SRI, and delivered to NASA Langley for evaluation in the AIRLAB. To increase confidence in the reliability projections for SIFT, produced by a Markov reliability model, SRI constructed a formal specification, defining the meaning of reliability in the context of flight control. A further series of specifications defined, in increasing detail, the design of SIFT down to pre- and post-conditions on Pascal code procedures. Mechanically checked mathematical proofs were constructed to demonstrate that the more detailed design specifications for SIFT do indeed imply the formal reliability requirement. An additional specification defined some of the assumptions made about SIFT by the Markov model, and further proofs were constructed to show that these assumptions, as expressed by that specification, did indeed follow from the more detailed design specifications for SIFT. This report provides an outline of the methodology used for this hierarchical specification and proof, and describes the various specifications and proofs performed

The health and well-being of caregivers raising children with and without autism spectrum disorder in the South African context

Background: Children require a nurturing environment to develop optimally and reach their full potential. A critical component of this environment is the health and well-being of caregivers so that they can provide responsive caregiving. It is believed that parents or caregivers of children with ASD will have poorer health and well-being than parents or caregivers of children without ASD. Therefore, parents of children with ASD may require more support to enable them to provide responsive caregiving to these children. Methods: This study was a quantitative study that employed an analytical, comparative design. The purpose of this study is to determine if there is a significant difference in the health and well-being of parents with children with ASD and parents of children without ASD in the South African context. Two hundred and eight participants from two schools in Kwa-Zulu Natal completed a paper-based survey containing 3 questionnaires relating to health-related quality of life; stress, anxiety and depression and parental self-efficacy. Parenting constructs such as stress, anxiety and parental self-efficacy are measured and described, and the association between Health-related Quality of Life and constructs such as stress, anxiety and parental self-efficacy is explored. It took place at a special needs school in KZN and mainstream school in the same district. Results: The results of this study demonstrated a poorer HRQOL in some of the areas of parents of a child with ASD compared to parents of a child without ASD. The results from this study demonstrate the importance for health practitioners to focus on the parents' health and well-being as part of the child's intervention. Conclusion: Intervention is mainly child-focussed however it is important for practitioners to understand the caregiver's health and well-being as this will have a positive influence of the child and in turn, lead to successful intervention. It is therefore important to have a family-centred approach. The QOL of the parents or caregivers of children with ASD will improve through support and intervention which will positively impact on the child's development. If the caregiver is receiving the appropriate support, their QOL will improve and they will be able to provide nurturing care that the child needs

Consumer preferences for scanning modality to diagnose focal liver lesions

Objectives: Differences in the process of using liver imaging technologies might be important to patients. This study aimed to investigate preferences for scanning modalities used in diagnosing focal liver lesions. Methods: A discrete choice experiment was administered to 504 adults aged 25 years. Respondents made repeated choices between two hypothetical scans, described according to waiting time for scan and results, procedure type, the chance of minor side-effects, and whether further scanning procedures were likely to be required. Choice data were analyzed using mixed-logit models with respondent characteristics used to explain preference heterogeneity. Results: Respondents preferred shorter waiting times, the procedure to be undertaken with a handheld scanner on a couch instead of within a body scanner, no side-effects, and no follow–up scans (p .01). The average respondent was willing to wait an additional 2 weeks for the scan if it resulted in avoiding side-effects, 1.5 weeks to avoid further procedures or to be told the results immediately, and 1 week to have the scan performed on a couch with a handheld scanner. However, substantial heterogeneity was observed in the strength of preference for desirable imaging characteristics. Conclusions: An average individual belonging to a general population sub–group most likely to require imaging to characterize focal liver lesions in the United Kingdom would prefer contrast–enhanced ultrasound over magnetic resonance imaging or computed tomography. Insights into the patient perspective around differential characteristics of imaging modalities have the potential to be used to guide recommendations around the use of these technologies

Silver Dreams Fund Learning and Evaluation Contract: Final report June 2014

This is a summary of the Final Report which presents the findings of the evaluation of the Big Lottery Fund's Silver Dreams Fund conducted by Ecorys.The Silver Dreams Fund was a £10 million programme which sought to address the gaps in provision by challenging organisations to come up with an innovative idea for a project that would "pioneer ways to help vulnerable older people deal more effectively with life-changing events".Our approach involved both formative and summative elements and was based upon a robust and evidence-based outcome evaluation framework. In addition, we have also undertaken an evaluation of the new programme management processes employed by the Big Lottery Fund which has been reported separately.In summary, the evaluation involved:- development of an evaluation framework and common indicators to measure outcomes;- provision of a package of self-evaluation support to projects;- programme level work to provide independent primary qualitative research and to validate findings from self-evaluations;- a range of learning activities; and- analysis and reporting

Notas de historia natural sobre el Aguara pytá Lycalopex gymnocercus (Mammalia: Carnivora: Canidae) en el Chaco paraguayo

We provide some natural history notes on the Pampas Fox Lycalopex gymnocercus from the Paraguayan Chaco. Information is presented on diet, distribution (with the first formal documentation of the species in the Oriental region), local beliefs, mortality, and possible play behavior. Photographic documentation of the existence of sarcoptic mange in wild foxes in the Paraguayan Chaco is also provided.Proveemos algunos datos de historia natural sobre el Aguara pytá Lycalopex gymnocercus en el Chaco Paraguayo. Se presenta información sobre dieta, distribución (con la primera documentación formal para la región Oriental), creencias locales, mortandad y comportamiento. También se presenta documentación fotográfica de la existencia de sarna sarcóptica en zorros silvestres en el Chaco Paraguayo