當今智慧型手機成長快速，市場潛力大，影響消費者的智慧型手機購買決策因素成為近年來值得研究的議題。但過去有關智慧型手機購買決策的研究中，大多著重在手機的作業系統或是功能層面，並未將行動應用程式(APP)及人際面的影響因素納入考量。因此，本研究以網路外部性、科技接受模型及理性行為理論為基礎，分別從智慧型手機及行動應用程式的屬性面和人際面來探討，目的為找出影響台灣地區現有智慧型手機使用者對智慧型手機再購意圖的因素，並進一步探索這些因素如何影響使用者的態度及再購意圖。本研究結果發現： 1.智慧型手機屬性面：當使用者認為智慧型手機是越有用的、越具娛樂性的，則使用者對智慧型手機的採用態度越正向；當使用者認為智慧型手機是越容易使用的，並不會直接影響其對智慧型手機的態度。 2.智慧型手機人際面：當使用者認為有越多人使用智慧型手機，則使用者對智慧型手機的購買意圖越正向；而無論使用者認為其家人、伴侶、好友、同學或同事支不支持其使用智慧型手機，都不會影響其對智慧型手機的購買意圖。 3.行動應用程式屬性面：當使用者認為在短時間內行動應用程式的數量成長的越快速，則其對智慧型手機的態度會越正面；而無論使用者認為APP數量、種類的多少、價格是否可被接受以及APP的設計品質完不完善等，都不會直接影響使用者對智慧型手機的態度。 4.行動應用程式人際面：當使用者認為其家人、伴侶、好友、同學或同事越支持其使用行動應用程式時，使用者對智慧型手機的態度會越正向。

Syfte: Problem med vibrationsskador har funnits i branschen lika länge som vibrerande maskiner har funnits. Idag är upp till 51 procent av alla belastningsskador som vibrationsrelaterade, enligt AFA. Det vanligaste är att män i åldrarna 47–49 har problem med vibrationsskador, men på senare år har skadorna krupit nedåt i åldrarna. Skador som kan uppstå av för hög vibrationsexponering är cirkulatoriska symtom (kalla/vita fingrar), neurologiska symtom (domningar, stickningar, nedsatt känsel) eller en kombination av dessa. Karpaltunnelsyndrom är även en följd av för hög exponering. Föreliggande arbete undersöker huruvida det kan vara ett beteende som ligger bakom den höga vibrationsexponeringen och om det i sådana fall kan brytas. Yrkesarbetarnas och platsledningens kunskaper och förståelse för de körtider som finns för maskiner har även studerats. Metod: En litteraturstudie har genomförts i arbetet. Sedan har totalt har tolv intervjuer utförts, åtta intervjuer med yrkesarbetare, tre med platsledningen och en med maskintillverkare. Det har även gjorts en mindre dokumentanalys av arbetsberedningar. Resultat: Studien visar att ett beteende ligger bakom det faktum att körtider överskrids och hantverkare utsätts för vibrationsexponering över gränserna. Det står även klart att kunskapen och förståelsen hos yrkesarbetarna och platsledningen behöver ökas gällande körtider och hur man tar fram vibrationsaccelerationen på maskiner. Konsekvenser: Branschen bör ställa krav på beställare och företag att ge utrymme för den kostnad som tillkommer när körtider följs. På så sätt kan beteendet brytas genom att tiden finns för särskilda moment. Genom att utbilda sin personal om vibrationsskador kan företaget få en mer kompetent och förstående personal i utbyte. Begränsningar: Denna undersökning är inte företagsspecifik vilket medför att resultatet kan vara applicerbart på de flesta byggföretag i Sverige. Studien undersöker endast hand- och armvibrationsskador, medan helkroppsvibrationer har uteslutits. Nyckelord: Hand- och armvibrationsskador, Teorin om överlagt beteende, Arbetsberedningar, Arbetsmiljöverkets föreskrifter, insatsvärde och gränsvärde. / Purpose: The issue with vibration injury have been around in the construction industry for as long as there have been vibrating machines available. Today it’s up to 51 percent of all strain injury’s that’s vibration-related, according to AFA. The most common thing is that men in the ages of 47-49 who suffers from vibration injury, but in recent years the injuries have crept down in the ages. The injuries that may emerge from excessive vibration exposure are circulatory symptoms (cold / white fingers), neurological symptoms (numbness, tingling, feeling impaired) or a combination of these. Carpal tunnel syndrome is also a consequence of too high exposure. This paper will investigate whether may be a behaviour that is behind the high vibration exposure and if it in such case can be broken. The operator’s knowledge and understanding of the operating hours for the machines have also been studied. Method: A literature study has been carried out at work. Then a total of twelve interviews have been conducted, eight with constructions workers, three with site managers and one with a power tool manufacture. A smaller document analysis of job planning has also been made. Findings: This study shows that behaviour is behind the fact that operating times are exceeded, and constructions workers are exposed to vibration exposure above the allowed limit. It is also clear that the knowledge and understanding of the workforce and the management team needs to be increased in operating hours and how to read vibration acceleration on machines. Implications: The industry should require customers and companies to provide space for the costs that are incurred when driving times are met. In this way, behaviour can be broken by giving time for special moments. By training their staff about vibration damage, the company can get a more competent and understanding staff in exchange. Limitations: This survey is not company-specific, which means that the results can be applied to most construction companies in Sweden. The study only examines hand and arm vibration damage, while whole body vibrations have been ruled out. Keywords: Vibrations injury of hand and arm, Theory of Reasoned action, Job planning, Swedish work environment authority regulation, Input Value and Limit.

There are several critical success factors suggested for why agile software development projects succeed, including organisational and process factors. Although there are an increasing number of identified critical success factors, IT professionals lack the modelling techniques and the theoretical framework to help them meaningfully understand their influences. To solve this problem, this study developed a model by employing the following theories: Theory of Reasoned Action (TRA), Theory of Planned Behaviour (TPB), and Unified Theory of Acceptance and Use of Technology (UTAUT) to create a fit model for agile software development projects. The research sought to answer the question: What are the critical success factors that influence the success of agile software development projects? The literature review considers the continued failure of agile and traditional software development projects which have led to the consideration of, and dispute over, critical success factors — the aspects most vital to a methodology’s success. Though TRA, TPB and UTAUT have previously been applied to agile methodologies, empirical models have not been completely integrated to develop a fit model. This research sought to fill this gap. Data was collected in South Africa through a web-based survey using structured questionnaires and an interview guide. Face-to-face interviews were done to identify the critical success factors in agile projects. The data was captured and analysed for descriptive statistics, convergent and discriminant validity, composite and internal reliability, and correlation in order to inform the structural equation modelling (SEM). SEM was used to test the research model and hypotheses to answer the research questions. The results informed development of a comprehensive model that could provide guidelines to the agile community. The study contributes towards understanding the critical success factors for agile projects. It examined direct, indirect and moderating effects, and the findings contribute towards developing a framework to be used by agile professionals. These key result shows that organisational factors have a great influence on performance expectancy characteristics. To ensure success of agile projects, managers are advised to focus on the effect of the organisation’s environment, culture and policies on performance and effort expectancy. / School of Computing / Ph. D. (Computer Science)

Sociala medier är idag en integrerad del av människors vardagsliv och kan ses som en ny typ av hälsorelaterad levnadsvana som kan innebära både positiva och negativa hälsoeffekter för individen. Självskattad hälsa används för att mäta hälsostatus i en befolkning och lite forskning finns på hur användning av sociala medier påverkar människors hälsa generellt. Syftet med denna studie är att undersöka hur användningen av sociala medier påverkar ungdomars självskattade hälsa samt vilka könsskillnader som finns. Målgruppen för studien är gymnasieelever och studien är baserad på kvantitativ data. En tvärsnittsstudie med en enkätundersökning som datainsamlingsmetod har använts. Frekvenstabeller har gjorts för att beskriva ungdomars användning av sociala medier och deras självskattade hälsa och chitvå test har använts för att påvisa eventuella samband. Resultaten visade på signifikanta värden mellan kön och självskattad hälsa samt mellan användning av sociala medier och självskattad hälsa. Resultatet har diskuterats utifrån teorin om övervägda handlingar.

Magister Commercii (Information Management) - MCom(IM) / This research work investigates and reports on the contribution of usability and perceptual frameworks towards understanding and ultimately increasing usage of a sales website and a corporate marketing website for a major insurance company in South Africa. It investigates whether the application of usability principles to the sales web positively influences the usage of the sales web system as a tool by intermediaries, and in so doing help the organisation recoup their investment and lower operational costs. This financial services (traditionally insurance) company, like many organisations, is in the process of migrating key operational systems onto web platforms to take advantage of benefits such as the ubiquity of web access and services orientated architecture among others. The research reviewed key frameworks in the area of technology acceptance or usage namely Nielsen‟s usability attributes (Nielsen, 2003). The Technology Acceptance Model (TAM), (Davis, 1989). The Theory of Reasoned Action (Fishbein & Ajzen, 1975). The Theory of Planned Behavior (Ajzen, 1985); and derived a theoretical summative model (the Conceptual Research Model) that combined both usability and perceptual dimensions. The applicability of this summative model was empirically tested using quantitative data relating to system usage and user perception. Empirical evidence was gathered to prove and refine the Conceptual Research Model (CRM), and the data substantiated the inclusion of the constructs in the CRM, as well as the efficacy of the model in a financial services organisation. Through testing of the CRM, this research has also confirmed which specific attributes of usability can be focussed on to bring about positive change in users' usage behaviour and adoption of a website or web application. / South Africa

Magister Public Health - MPH / The study had an observational, descriptive, cross sectional design. The sample consisted of 205 participants selected through convenience sampling. All students who presented for HIV testing during the colleges’ HIV Counselling and Testing campaign in December 2011 were asked to complete a self-administered closed-ended questionnaire voluntarily. The data was analysed with EPI Info versions 3.5.1. A frequency analysis was conducted for all the variables such as demographics, risk perception to HIV, knowledge of HIV, HIV testing behaviour. The association between HIV knowledge, risk perception and risk behaviours were assessed for gender differences. Chi-square analysis was conducted to determine the association between the main variable of interest HIV risk behaviour and each other explanatory variable (demographics, HIV knowledge, risk perception etc). Results were discussed using the theory of planned behaviour.

This research report presents the findings of an evaluation of a school-based substance abuse prevention programme presented as part of Project Awareness. The programme was presented as a one-day intervention for grade ten learners in eleven schools in Tshwane. The prevention program taught substance abuse refusal skills, anti-substance norms, personal self-management skills, and general social skills in an effort to provide students with skills and information for resisting substance offers, to decrease motivations to use substances, and decrease vulnerability to substance use social influences. The study evaluated this school-based substance abuse prevention intervention in a sample of learners (N=300) in six of the eleven schools. Measures were obtained on a behavioural survey to ascertain whether any knowledge, behaviour or attitude change occurred between the pre-intervention and post-intervention phases. In addition, focus group data and observational measures were implemented to determine how the learners experienced the programme and whether the programme was effective in capturing the attention of the learners. Results indicated that, from learners perceptions of the programme, the intervention seems to have had a positive impact on substance abuse prevention, but not on changing the behaviour of learners already engaging in substance abuse. The results from the behavioural survey indicated some change in learner attitudes to some degree, but not behavioural change. Suggestions for the improvement of the programme were made throughout the report, and the observational measures specifically indicated that the more practical oriented tasks were more efficient in capturing the attention of learners. It is concluded that although the programme certainly had room for improvement, that the programme did indeed address relevant issues. The program also had a direct positive effect on several cognitive, attitudinal, and personality variables believed to play a role in adolescent substance use. / Dissertation (MA)--University of Pretoria, 2008. / Psychology / unrestricted

Indiana University-Purdue University Indianapolis (IUPUI) / Drinking and driving is increasingly becoming a detrimental behavior, especially amongst college-aged students in the U.S. and other countries. Additionally, research shows that college-age students in the U.S. are more likely to drink and drive, than college-age students in Germany. Fishbein and Ajzen’s Theory of Reasoned Action asserts that subjective norms and attitudes signify behavioral intentions. In order to test the TRA and understand the drinking and driving differences and similarities in the U.S. and Germany, focus groups of German and American college-age students were conducted to discuss subjective norms and attitudes surrounding drinking and driving behaviors, followed up by an electronic pilot study survey regarding same. The data collected illustrated that college-age drinking and driving is occurs more frequently in the U.S., and that American and German students differ in their attitudes and subjective norms surrounding drinking and driving. Future research would benefit the continued use and circulation of the electronic surveys for larger cross-cultural samples of college-age students to more effectively and quantitatively assess actual drinking and driving behaviors as it relates to subjective norms and attitudes, as suggested in the TRA.

No description available.

This study applied the theory of reasoned action (TRA) and its extension, the theory of planned behaviour (TPB) to the design of a workplace HIV/AIDS health promotion programme. The purpose of the study was to determine if the variables of the TRA and TPB would predict intentions to change HIV/AIDS health behaviour, whether a theory-based intervention would result in health behaviour change over time and if there would be any significant health behaviour differences among participants who received a theory-based intervention and those who received an information-only intervention. In a longitudinal, quasi-experimental study, 170 government employees were divided into two groups. One group comprised 92 employees who participated in a HIV/AIDS health promotion workshop based on the theories of reasoned action and planned behaviour. The other group comprised 78 employees who took part in an educational information session about HIV and AIDS. An elicitation study was conducted with a sample of 38 employees from the research population two months prior to the commencement of the study. The findings of the elicitation study informed the design of research questionnaires and an intervention workshop. Both groups of participants (theory-based workshop and information-only workshop) were measured on HIV/AIDS health behaviour intentions and HIV/AIDS health behaviour (condom use, seeking HIV testing and monogamy) across three measurement periods over a six month period. The results of the study showed that the combined theoretical variables predicted intentions to use condoms and to seek HIV testing, with attitudes having the main effect on intentions. There was, however, no significant health behaviour change across the three measurement periods. There were also no health behaviour differences between the two intervention conditions at one month and six months post-intervention. The study concludes that the intervention based on the theories of reasoned action and planned behaviour did not produce health behaviour change. The study also identified barriers to AIDS health behaviour in the South African context that the theories of reasoned action and planned behaviour cannot explain. Ways in which the theories of reasoned action and planned behaviour can be adapted to HIV/AIDS education in collectivist cultures are proposed. / Psychology / Thesis (D. Phil. (Psychology))