Syfte: Undersöka den kriterierelaterade validiteten, mellanbedömarreliabiliteten och användarvänligheten för MEONF, ett screeninginstrument för bedömning av risk för undernäring. Metoder: Hundra patienter inkluderades och nutritionsstatus bedömdes med Mini Nutritional Assessment (MNA) som här anses vara golden standard samt screenades med Malnutrition Universal Screening Tool (MUST) och Minimal Eating Observation and Nutrition Form (MEONF). Resultat: Sjuksköterskorna ansåg MEONFs instruktioner och frågor lätta att förstå, svara på (100 %) samt att frågorna var angelägna (98 %). Instrumentet hade acceptabel sensitivitet (0.83) och specificitet (0.78) jämfört med MNA. Sensitiviteten var högre än den som fanns mellan MUST och MNA (0.57). När BMI ersattes med vadomkrets erhölls likvärdiga resultat (sensibilitet 0.83 specificitet 0.79) för MEONF i förhållande till MNA. Mellanbedömarreliabiliteten var hög (kappa 0.81). Sammanfattning: MEONF har bra validitet jämfört med MNA, med hög mellanbedömarreliabilitet. När BMI ersattes med vadomkrets bibehölls precisionen vilket är viktigt när vikt och längd är svåra att erhålla. Hög sensitivitet är angeläget vid screening för undernäring och i det avseendet fungerar MEONF bättre än MUST. En fundamental vinst med MEONF är att instrumentets kriterier upplevs som meningsfulla, för att vissa svårigheter kan avhjälpas med omvårdnadsåtgärder. Syfte: Undersöka den kriterierelaterade validiteten, mellanbedömarreliabiliteten och användarvänligheten för MEONF, ett screeninginstrument för bedömning av risk för undernäring. Metoder: Hundra patienter inkluderades och nutritionsstatus bedömdes med Mini Nutritional Assessment (MNA) som här anses vara golden standard samt screenades med Malnutrition Universal Screening Tool (MUST) och Minimal Eating Observation and Nutrition Form (MEONF). Resultat: Sjuksköterskorna ansåg MEONFs instruktioner och frågor lätta att förstå, svara på (100 %) samt att frågorna var angelägna (98 %). Instrumentet hade acceptabel sensitivitet (0.83) och specificitet (0.78) jämfört med MNA. Sensitiviteten var högre än den som fanns mellan MUST och MNA (0.57). När BMI ersattes med vadomkrets erhölls likvärdiga resultat (sensibilitet 0.83 specificitet 0.79) för MEONF i förhållande till MNA. Mellanbedömarreliabiliteten var hög (kappa 0.81). Sammanfattning: MEONF har bra validitet jämfört med MNA, med hög mellanbedömarreliabilitet. När BMI ersattes med vadomkrets bibehölls precisionen vilket är viktigt när vikt och längd är svåra att erhålla. Hög sensitivitet är angeläget vid screening för undernäring och i det avseendet fungerar MEONF bättre än MUST. En fundamental vinst med MEONF är att instrumentets kriterier upplevs som meningsfulla, för att vissa svårigheter kan avhjälpas med omvårdnadsåtgärder. / Rationale: Analyse the criterion related validity, interrater reliability and the usefulness of MEONF, an instrument for undernutrition risk screening. Methods: 100 patients were included and assessed with Mini Nutritional Assessment (MNA) regarded as golden standard and screened with Malnutrition Universal Screening Tool (MUST) as well as Minimal Eating Observation and Nutrition Form (MEONF). Results: Nurses regarded MEONF instructions and questions easy to understand, easy to answer (100%) and questions as being important (98%). It had acceptable sensitivity (0.83) and specificity (0.78) in relation to MNA. Sensitivity was higher than found between MUST and MNA (0.57). Replacing BMI with Calf Circumference (CC) gave equivalent results (sensibility 0.83, specificity 0.79) in relation to MNA. Interrater reliability was high (kappa 0.81). Conclusions: MEONF has good validity in relation to MNA and high interrater reliability. If replacing BMI with CC the precision is maintained, which is important in cases were weight or height is difficult to obtain. Having high sensitivity is a major concern for nutritional screening instruments and in that respect MEONF works better than MUST. One fundamental gain with MEONF is that the instruments criteria are experienced as clinically meaningful, in that some observed difficulties can be managed by nursing interventions.

This research regards internet users with hearing-impairment as the target. The purpose is to investigate the factors which will influence hearing-impaired people use internet. This research is theoretically based on the Technology Acceptance Model (TAM). According to the literatures, join subject norm, media richness, internet self-efficacy and perceived enjoyment. A total of 255 effective samples were collected via internet questionnaire. Through the survey and analysis, we could prove that subject norm, perceived usefulness and perceived ease of use will influence the behavioral intention directly. Subject norm, media richness, perceived enjoyment and perceived ease of use will influence the perceived usefulness directly. And media richness, internet self-efficacy and perceived enjoyment will influence the perceived ease of use. According to the findings of research, there are the following suggestions. (1) Hearing-impaired communities should offer information courses of computer and internet. (2)The government should offer more services through internet, and social welfare organizations should update information as instant as possible. (3)Implement the execution of the regulations of web accessibility.

The purpose of this study is to develop a methodology by extending the Technology Acceptance Model (Davis, 1989) in order to contribute the acceptance of Hospital Management Systems in hospitals. The study also aims to extend the TAM by adding external variables. Thereby the relationships between perceived usefulness, perceived ease of use and external TAM factors and how these relationships will affect the behavioral intention to use the technology will be determined. In this study quantitative research methods are used. Quantitative research comprises from a questionnaire which is tested in Turkish government hospitals by hospital personnel, physicians, nurses, technicians and administrative personnel. After collection of data from quantitative research the analysis of the data was conducted. The findings of the analysis gave the significant relationships between perceived usefulness, perceived ease of use, behavioral intention and external variables. In conclusion this study points out the effects and the compatibility of the critical factors of TAM on the user acceptance of Hospital Management Systems in Turkish hospitals.

Check: IRK (Initial Riskbedömning för Kriminalitet) är en nyutvecklad evidensbaserad checklista tänkt att användas av professionella i initiala bedömningar för att identifiera riskfaktorer för kriminalitet hos ungdomar och vuxna med risk för långvarigt kriminellt beteende. Syftet med vår studie var att i en första pilottestning ta reda på hur professionella inom polis och socialtjänst uppfattar användbarheten av Check: IRK. Via en webbenkätundersökning besvarade 21 respondenter, varav 6 män och 15 kvinnor mellan 26-47 år (M=36 år, SD=6,70) på frågor gällande innehåll, tillämpning och utbildning i Check: IRK. Studiens data analyserades med Z-test och resultaten indikerar att utifrån innehåll, tillämpning och utbildning i checklistan så uppfattar professionella inom polis och socialtjänst Check: IRK som användbar i sitt arbete. / Check: IRK is a newly developed evidence-based checklist designed to be used by professionals in the initial assessment to identify risk factors for criminality in adolescents and adults at risk of long-term criminal behavior. The current pilot study investigated how professionals within the police and social services perceived the usefulness of Check: IRK. Through a web survey 21 respondents including 6 men and 15 women between the age of 26-47 years (M=36 years, SD=6,70) answered questions regarding the content, implementation and training of the Check: IRK. Data were analyzed using Z-test and the results indicated that professionals within the police and social services find the Check: IRK to be useful in their daily work.

A qualitative description of the personal armour design system is elicited by comparing armour throughout the ages. Inputs that 'shape' designs are the materials technology, threat, wearer, task and environment. The emergent properties of protection, ergonomic effectiveness and financial cost form the basis of trade-offs to select final solutions. Work on the protection subsystem refines the key positive emergent property of personal armour. Existing quantifications of protection effectiveness are rejected in favour of a novel measure named the Usefulness Factor, UF. This is the first measure that accounts for the real benefit of armour. A five-stage model is proposed for the assessment of protection. Two feedback loops - due to making tasks as safe as possible and the ergonomic penalty of armour are evident. These must be considered in order to assess protection correctly. Casualty reduction analysis software (CASPER) is used to produce 'approach plots' and 'zones of usefulness' in order to make tasks safer and map the benefit of armour. This approach is demonstrated with the UK's Lightweight Combat EOD Suit against L2A2 and No. 36 Mills grenades, an HB876 area denial mine, a BL 755 sub-munition and a 105mm artillery shell. Assessment of secondary fragmentation from antipersonnel (AP) blast mines defines a threat input that is specific to Explosive Ordnance Disposal (EOD). Trials are carried out with explosive charges of 50g to 500g, buried under 5 or 10cm of stones and sand at a range of 1m. The threat is defined in terms of the probabilities of (a) being hit, (b) a hit perforating armour and (c) a hit incapacitating an unarmoured person. The chances of being hit close to the ground decrease to approximately 15% of the value when directly above the mine. Secondary fragmentation is not likely to perforate armour that protects against primary fragments. However, it is likely to incapacitate an unarmoured person. Protection is traded-off against proxies for ergonomic and financial cost effectiveness by using quantitative optimisation of personal armour. This introduces the concept of a 'protection optimisation envelope', which defines the bounds of possibility rather than a single solution. CASPER is adapted to produce weight and cost as well as incapacitation parameters. This provides a model that generates both benefits and constraints of armour. Hence, the foundations are laid for the world's first fully integrated personal armour design tools. The ergonomic effectiveness subsystem is the primary constraint of personal armour. Visor demisting for the UK's Mk 5 EOD Suit provides a simple example. Existing methods of assessment of the ergonomic penalty of armour are considered. A novel development of biomechanics computational models is proposed to predict both the mechanical and thermal burdens of armour.

INTRODUCTION: While mobile device use by physicians increases, there is an increased risk that errors committed while using mobile devices can lead to harm. This mixed-method study evaluates the effects of screen size on clinical users’ perceptions of medical application usability and safety when interfacing to critical patient information. In this research, two mobile devices are examined: iPhone® and the iPad®. METHOD: Eleven physicians and one nurse practitioner participated in a chart-review simulation using an app that was an end-point to an electronic health record. Screen-recording, video-recording and a think-aloud protocol were used to gather data during the simulation. Additionally, participants completed Likert-based questionnaires and engaged in semi-structured interviews. RESULTS: A total of 105 usability, usefulness and safety problems were recorded and analysed. A strong preference was found for the larger screen when reviewing patient data due to the large quantity of data and the increased display size. The smaller device was preferred due to the devices portability when participants needed to remain informed when they were away from the point of care. CONCLUSION: There is an association between screen size and the perceived safety of the handheld device. The iPad was perceived to be safer to use in clinical practice. Participants preferred the iPad® because of the larger size, not because they thought it was safer or easier to use. The iPhone® was preferred for its portability and its usefulness was perceived to increase with greater distance from the point of care. / Graduate

Thesis (MTech (Information Technology)--)Cape Peninsula University of Technology, 2012 / Includes bibliographical references (leaves 127) / In rapid advances in marketing strategies, Social Networks Marketing (SNM) is dramatically becoming an important aspect in promoting businesses. Social networks marketing has been found as one of the most effective tool used in businesses today, by most business owners in South Africa, to expand, and flourish their businesses. The explosion of Internet usage has drawn the attention of researchers towards social networks marketing. Research has shown that potential Internet users are doubtful, and indecisive to use, and accept SNM system in spite of their availability. Therefore, there is a need for researchers to identify some of the factors that determine user’s unwillingness to accept and use the system. According to the Technology Acceptance Model (TAM), Perceived Ease of Use (PEOU), and Perceived Usefulness (PU) are the two major constructs in determining the use and acceptance of various information systems. These beliefs may not fully explain the user’s behaviour towards newly introduced system, such as social networks marketing. Hence, this study had successfully implemented TAM to the newly proposed information system (social networks marketing system). Using TAM as a theoretical framework, the study added two new constructs “perceived credibility” and “awareness” as part of the factors influencing user’s acceptance of social networks marketing. The purpose of the study was to explore the impact of social networks marketing system by SMEs in South Africa, and perception of consumers. In addition, this research investigated factors that influence users’ acceptance of social networks marketing using TAM as the basis for the theoretical framework. Questionnaire-based study done in 2 groups; consumers and small and medium-scale enterprises (SMEs), in this work, represent the major users of social networks marketing in South Africa. The research model was tested using data collected from 143 questionnaires and analysed using linear regression. The results show that user’s intentions to use SNM are strongly and positively correlated with user acceptance. The empirical results confirmed that perceived credibility and perceived usefulness are the strongest determinant in predicting user’s intention to use SNM. In addition, many of the South African SMEs using SNM, have presumed that SNM has positively and negatively impacted their businesses.

Context. The subject presented in this research is the fact that people resist IT induced change and want to maintain their current situation when implementing a new information system.  If no strategy is set to deal with it, resistance to change leads to Information System failure. Objectives. In this study, the author is investigating how to anticipate and handle resistance to change when implementing a new information system in order to succeed. This is followed by introducing the factors affecting user satisfaction which in turn affects user acceptance. Methods The data collection involves interviews in order to assemble appropriate, justifiable and relevant data, in addition to surveys to measure and validate the hypotheses in this thesis. The banking sector in Lebanon was selected as a source of data collection. Results. Three factors Perceived ease of use(PEOU), Perceived Usefulness (PU), and User Involvement react together to satisfy user and hence to make the user accept change. Conclusions. Based on the studies conducted so far with respect to this topic, there exists an indirect relationship between the three factors discussed in this thesis, the user satisfaction, and the user acceptance. The more the user finds the system easy to use (simple way of work with less efforts) and useful (the extent to which person’s work is improved) and the more he/sh  is involved, the more he is satisfied and hence the more he is willing to accept the change and causes system success.

A qualitative description of the personal armour design system is elicited by comparing armour throughout the ages. Inputs that 'shape' designs are the materials technology, threat, wearer, task and environment. The emergent properties of protection, ergonomic effectiveness and financial cost form the basis of trade-offs to select final solutions. Work on the protection subsystem refines the key positive emergent property of personal armour. Existing quantifications of protection effectiveness are rejected in favour of a novel measure named the Usefulness Factor, UF. This is the first measure that accounts for the real benefit of armour. A five-stage model is proposed for the assessment of protection. Two feedback loops - due to making tasks as safe as possible and the ergonomic penalty of armour are evident. These must be considered in order to assess protection correctly. Casualty reduction analysis software (CASPER) is used to produce 'approach plots' and 'zones of usefulness' in order to make tasks safer and map the benefit of armour. This approach is demonstrated with the UK's Lightweight Combat EOD Suit against L2A2 and No. 36 Mills grenades, an HB876 area denial mine, a BL 755 sub-munition and a 105mm artillery shell. Assessment of secondary fragmentation from antipersonnel (AP) blast mines defines a threat input that is specific to Explosive Ordnance Disposal (EOD). Trials are carried out with explosive charges of 50g to 500g, buried under 5 or 10cm of stones and sand at a range of 1m. The threat is defined in terms of the probabilities of (a) being hit, (b) a hit perforating armour and (c) a hit incapacitating an unarmoured person. The chances of being hit close to the ground decrease to approximately 15% of the value when directly above the mine. Secondary fragmentation is not likely to perforate armour that protects against primary fragments. However, it is likely to incapacitate an unarmoured person. Protection is traded-off against proxies for ergonomic and financial cost effectiveness by using quantitative optimisation of personal armour. This introduces the concept of a 'protection optimisation envelope', which defines the bounds of possibility rather than a single solution. CASPER is adapted to produce weight and cost as well as incapacitation parameters. This provides a model that generates both benefits and constraints of armour. Hence, the foundations are laid for the world's first fully integrated personal armour design tools. The ergonomic effectiveness subsystem is the primary constraint of personal armour. Visor demisting for the UK's Mk 5 EOD Suit provides a simple example. Existing methods of assessment of the ergonomic penalty of armour are considered. A novel development of biomechanics computational models is proposed to predict both the mechanical and thermal burdens of armour.

The purpose of this study is to investigate how a financial literacy interface model could contribute towards the comprehensibility of financial information to decision makers in organisations. The way individuals and institutions use the concept of financial literacy suggests that different people attach different meanings to this construct. In order to establish a conceptual model for financial literacy, this study endeavours to formulate what financial literacy entails as well as decision makers’ expectations of financial information. The increase in the volume and complexity of financial information often outstrips the abilities of users to understand and interpret it for decision-making purposes. A financial literacy interface provides an opportunity window for decision makers in organisations to break through their fears and concerns in using financial figures and language. Users of financial information differ vastly with regard to their level of financial capability and sophistication, and preparers of financial information should take cognisance of the fact. The study revealed that financial literacy is a complex phenomenon and that the term encompasses more than the individual terms “financial” and “literacy”. It further endeavoured to develop a financial literacy interface model as a coordinating interface between financial information and decision makers. / Thesis (DCom)--University of Pretoria, 2009. / Financial Management / unrestricted