216 research outputs found
Ontological foundations of modelling security policies for analysis
Modelling of knowledge and actions in AI has advanced over the years but it is still a challenging topic due to the infamous frame problem, the inadequate formalization and the lack of automation. Some
problems in cyber security such as logical vulnerability, risk assessment, policy validation etc. still require formal approach. In this paper we present the foundations of a new formal framework to address these challenges. Our approach is based on three-level formalisation: ontological, logical and analytical levels. Here we are presenting the first two levels which allow to model the security policies and provide a practical solution to the frame problem by efficient utilization of parameters as side effects. Key concepts are the situations, actions, events and rules. Our framework has potential use for analysis of a wide range of transactional systems within the financial, commercial and business domains and further work will include analytical level where we can perform vulnerability analysis of the model
Ontological foundations for vulnerability analysis of security policies
Logical vulnerability is the breaking into a system by manipulating the rules of the system and security. We want to analyse logical vulnerabilities by validating the security policies throughout the journey. This presentation will cover the following six areas:
1. Introduction
2. Methodology
3. Ontological level: the domain model
4. Logical level: logical constraints and expert rules
5. Analytical level: accessibility, vulnerability and risks
6. Conclusion and further wor
The Origins, Development and Evaluation of Mathematics Support Services
This article is an introductory overview of the
recent expansion in the development and provision of mathe-
matics support services at third level. In the last ten years the
establishment of Mathematics Support and Learning Centres
has increased significantly in Ireland and the UK. Most third
level institutes in Ireland now supply some level of math-
ematics support. We will discuss the development of these
supports as well as the reasons why third level institutes have
decided to introduce them. We also give an overview of how
these services are evaluated and the impact that they appear
to have on student retention and performance
Landscape Preferences, Amenity, and Bushfire Risk in New South Wales, Australia
This paper examines landscape preferences of residents in amenity-rich bushfire-prone landscapes in New South Wales, Australia. Insights are provided into vegetation preferences in areas where properties neighbor large areas of native vegetation, such as national parks, or exist within a matrix of cleared and vegetated private and public land. In such areas, managing fuel loads in the proximity of houses is likely to reduce the risk of house loss and damage. Preferences for vegetation appearance and structure were related to varying fuel loads, particularly the density of understorey vegetation and larger trees. The study adopted a qualitative visual research approach, which used ranking and photo-elicitation as part of a broader interview. A visual approach aids in focusing on outcomes of fuel management interventions, for example, by using the same photo scenes to firstly derive residentsâ perceptions of amenity and secondly, residentsâ perceptions of bushfire risk. The results are consistent with existing research on landscape preferences; residents tend to prefer relatively open woodland or forest landscapes with good visual and physical access but with elements that provoke their interest. Overall, residentsâ landscape preferences were found to be consistent with vegetation management that reduces bushfire risk to houses. The terms in which preferences were expressed provide scope for agency engagement with residents in order to facilitate management that meets amenity and hazard reduction goals on private land
The Origins, Development and Evaluation of Mathematics Support Services
This article is an introductory overview of the
recent expansion in the development and provision of mathe-
matics support services at third level. In the last ten years the
establishment of Mathematics Support and Learning Centres
has increased significantly in Ireland and the UK. Most third
level institutes in Ireland now supply some level of math-
ematics support. We will discuss the development of these
supports as well as the reasons why third level institutes have
decided to introduce them. We also give an overview of how
these services are evaluated and the impact that they appear
to have on student retention and performance
The Irish mathematics support network: its origins and progression
In this report we will present an overview of the establishment and subsequent development of the Irish Mathematics Support Network. We will briefly mention the reasons behind the foundation of the network and we will expand upon the aims and outcomes of our activities and projects in detail. We will discuss our activities in terms of our main goals; meeting the challenge of providing support for the wide range of students studying mathematics at third level and providing suitable and shared resources to help the consolidation and expansion of mathematics support services on a wide basis nationally
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Proxy rated quality of life of care home residents with dementia: a systematic review
Quality of life (QoL) is an important outcome for people with dementia living in care homes but usually needs to be rated by a proxy. We do not know if relative or paid carer proxy reports differ. We conducted the first systematic review and meta-analysis of data investigating whether and how these proxy reports of QoL differ.
We searched four databases: Medline, Embase, PsychInfo, and CINAHL in October 2015 with the terms: dementia, QoL, proxy, and care home. Included studies either compared proxy QoL ratings or investigated the factors associated with them. We meta-analyzed data comparing staff and family proxy rated QoL.
We included 17/105 papers identified. We found no difference between global proxy ratings of QoL (n = 1,290; pooled effect size 0.06 (95% CI = â0.08 to 0.19)). Studies investigating factors associated with ratings (n = 3,537) found family and staff ratings correlated with the resident's physical and mental health. Staff who were more distressed rated resident QoL lower. Relatives rated it lower when the resident had lived in the care home for longer, when they observed more restraint, or contributed more to fees.
Relatives and staff proxy QoL ratings share a clear relationship to resident health and overall ratings were similar. Rater-specific factors were, however, also associated with scores. Understanding why different raters consider the QoL of the same person differently is an important consideration when evaluating the meaning of proxy rated QoL. Proxy ratersâ backgrounds may affect their rating of QoL
âThe oxygen of shared experienceâ: exploring social support processes within peer support groups for carers of people with non-memory-led and inherited dementias
OBJECTIVES: To explore support processes and behaviours taking place during online peer support groups for family carers of people living with rare, non-memory-led and inherited dementias (PLWRD). METHODS: Twenty-five family carers of PLWRD participated in a series of ongoing online peer support groups on the theme of 'Independence and Identity'. Transcripts from 16 sessions were analysed using qualitative directed content analysis with a coding framework informed by Cutrona & Suhr's (2004) Social Support Behaviour Code (SSBC). RESULTS: Most of the social support behaviours outlined in the SSBC were identified within the sessions, along with two novel social support categories - 'Experiential Support' and 'Community Support' - and novel support behaviours including 'Advocacy and Collective Action' and 'Uses Humour'. The SSBC code 'Relationship' appeared to be of central importance. CONCLUSIONS: This study sheds light on the unique challenges of the caring context for those affected by non-memory-led and inherited dementias and the significant contributions carers can offer to, and receive from, peers in similar situations. It highlights the importance of services which recognise the value of the informational and emotional expertise of carers of PLWRD and encourages the continued development and delivery of tailored support for these populations
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Working hard on the outside: a multimodal critical discourse analysis of The Biggest Loser Australia
The Biggest Loser (TBL) is a reality television weight-loss programme that positions itself as a response to the so-called âobesity crisisâ. Research on TBL has thus far focussed on audience responses and its effect on viewersâ beliefs about weight loss. This article focuses instead on how meaning is constructed in TBL. We conducted a multimodal critical discourse analysis of a key episode of TBL (the 2012 Australian season finale) to examine how the textual, visual and auditory elements combine to construct meanings beyond the ostensible health messages. Although the overt message is that all contestants have worked hard, turned their lives around and been âsuccessfulâ, examination of editing choices, lighting and colour, clothing and time spent on contestants allows us to see that the programme constructs varying degrees of success between contestants and provides accounts for these differences in outcomes. In this way the programme is able to present itself as a putative celebration of all contestants while prescribing narrow limits around what constitutes success. TBL reinforces an ideology in which âsuccessâ is a direct result of âthe workâ of weight loss (both physical and emotional), which can apparently be read straightforwardly off the body. TBLâs âcelebrationâ of weight loss thus reproduces and strengthens the widespread view of fat bodies as physical manifestations of individual (ir)responsibility and psychological dysfunction, and contributes to the ongoing stigmatisation of obesity
How do care home staff understand, manage and respond to agitation in people with dementia? A qualitative study
Objectives: Little is known about how care home staff understand and respond to distress in residents living with dementia labelled as agitation. The aim of this study was to describe how care home staff understand and respond to agitation and the factors that determine how it is managed.
Design: We conducted a qualitative thematic analysis.
Setting: We recruited staff from six care homes in South East England including residential and nursing homes of differing sizes run by both the private and charity sector and located in urban and rural areas.
Participants: We interviewed 25 care home staff using purposive sampling to include staff of either sex, differing age, ethnicity, nationality and with different roles and experience.
Results: We identified four overarching themes: (1) behaviours expressing unmet need; (2) staff emotional responses to agitation; (3) understanding the individual helps and (4) constraints on staff responses. Staff struggled with the paradox of trying to connect with the personhood of residents while seeing the person as separate to and, therefore, not responsible for their behaviours. Staff often felt powerless, frightened and overwhelmed, and their responses were constrained by care home structures, processes and a culture of fear and scrutiny.
Conclusions: Responding to agitation expressed by residents was not a linear process and staff faced tensions and dilemmas in deciding how to respond, especially when initial strategies were unsuccessful or when attempts to respond to residentsâ needs were inhibited by structural and procedural constraints in the care home. Future trials of psychosocial interventions should support staff to identify and respond to residentsâ unmet needs and include how staff can look after themselves
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