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Articles 121 - 150 of 151

Full-Text Articles in Social and Behavioral Sciences

Ict Devices As Ubiquitous Tools For Information Seeking Activity, Joseph A. Meloche, Helen M. Hasan Jan 2008

Ict Devices As Ubiquitous Tools For Information Seeking Activity, Joseph A. Meloche, Helen M. Hasan

Faculty of Commerce - Papers (Archive)

This paper investigates the use of current and developing ubiquitous digital devices and the way that they impact on, and are integrated into, use by groups within the community for information seeking. Three cases are presented involving ubiquitous use of the mobile phone, USB memory devices, and a wireless groupware system. The study considers the need for ongoing research to inform, direct and study the innovative use, appropriation and development of such tools. The primary methodological framework that is applied is activity theory, as it allows dasiatoolpsila to be examined in light of purposeful activity in the context of their …

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Plasminogen Binding And Activation At The Breast Cancer Cell Surface: The Integral Role Of Urokinase Activity, Gillian E. Stillfried, Darren Saunders, Marie Ranson Jan 2007

Plasminogen Binding And Activation At The Breast Cancer Cell Surface: The Integral Role Of Urokinase Activity, Gillian E. Stillfried, Darren Saunders, Marie Ranson

Faculty of Health and Behavioural Sciences - Papers (Archive)

INTRODUCTION: The regulation of extracellular proteolytic activity via the plasminogen activation system is complex, involving numerous activators, inhibitors and receptors. Previous studies on monocytic and colon cell lines suggest that plasmin pre treatment can increase plasminogen binding, allowing the active enzyme to generate binding sites for its precursor. Other studies have shown the importance of pre formed receptors such as annexin II heterotetramer. However, few studies have utilised techniques which exclusively characterise cell surface events and these mechanisms have not been investigated at the breast cancer cell surface. METHODS: We have studied plasminogen binding to MCF 7 in which uPAR …

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A Cultural-Historical Activity Theory Approach To Users, Usability And Usefulness, Helen M. Hasan Jan 2007

A Cultural-Historical Activity Theory Approach To Users, Usability And Usefulness, Helen M. Hasan

Faculty of Commerce - Papers (Archive)

This paper takes an historical overview of the field of Human-Computer Interaction. Itdescribes how the cognitive psychology emphasis on user involvement in systemsdevelopment of the 1980s reached its limit by the early 1990s. At this point the focus shifted onto support for the tasks of users using computer-based systems in real contexts, a focus that ideally suits the mobile, ubiquitous and social technologies of the new millennium. The Cultural-Historical Activity Theory provides an appropriate framework for understanding this phenomenon and is adopted in this paper to present the work, over a seven year period, of a usability laboratory grounded in …

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Mimicking Phosphorylation Of Alphab-Crystallin Affects Its Chaperone Activity, Heath W. Ecroyd, Sarah Meehan, J Horwitz, Andrew Aquilina, J L Benesch, C V Robinson, Cait Macphee, John Carver Jan 2007

Mimicking Phosphorylation Of Alphab-Crystallin Affects Its Chaperone Activity, Heath W. Ecroyd, Sarah Meehan, J Horwitz, Andrew Aquilina, J L Benesch, C V Robinson, Cait Macphee, John Carver

Faculty of Science - Papers (Archive)

No abstract provided.

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Depression And Quality Of Life In Cancer Survivors: Is There A Relationship With Physical Activity?, Nancy Humpel, Donald Iverson Jan 2007

Depression And Quality Of Life In Cancer Survivors: Is There A Relationship With Physical Activity?, Nancy Humpel, Donald Iverson

Faculty of Health and Behavioural Sciences - Papers (Archive)

Background Evidence is growing on the benefit of physical activity to improve well-being following a cancer diagnosis. This study examined changes in physical activity from pre to post diagnosis and explored this relationship with quality of life and depression. Methods Participants were recruited by posters and by letter of invitation. The questionnaire was completed by 59 prostate and 32 breast cancer survivors. Results Physical activity decreased by 72 minutes per week from pre to post diagnosis, although 20.9% reported having increased activity post diagnosis. Over 30% were considered depressed. Breast cancer participants who increased physical activity post diagnosis reported higher …

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Scaling Of Na+, K+-Atpase Molecular Activity And Membrane Fatty Acid Composition In Mammalian And Avian Hearts, Anthony J. Hulbert, Paul Else, Kurt Haga, Nigel Turner Jan 2006

Scaling Of Na+, K+-Atpase Molecular Activity And Membrane Fatty Acid Composition In Mammalian And Avian Hearts, Anthony J. Hulbert, Paul Else, Kurt Haga, Nigel Turner

Faculty of Health and Behavioural Sciences - Papers (Archive)

We have examined Na+,K+‐ATPase molecular activity and membrane fatty acid composition in the heart of six mammalian and eight avian species ranging in size from 30 g in mice to 280 kg in cattle and 13 g in zebra finches to 35 kg in emus, respectively. Na+,K+‐ATPase activity scaled negatively with body mass in both mammals and birds. In small mammals, the elevated enzyme activity was related to allometric changes in both the concentration and molecular activity (turnover rate) of Na+,K+‐ATPase enzymes, while in small birds, higher Na …

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An Allometric Comparison Of Microsomal Membrane Lipid Composition And Sodium Pump Molecular Activity In The Brain Of Mammals And Birds, Anthony J. Hulbert, Paul Else, Nigel Turner Jan 2005

An Allometric Comparison Of Microsomal Membrane Lipid Composition And Sodium Pump Molecular Activity In The Brain Of Mammals And Birds, Anthony J. Hulbert, Paul Else, Nigel Turner

Faculty of Health and Behavioural Sciences - Papers (Archive)

Previous research has shown that the lipid milieu surrounding membrane proteins may be an important factor in determining their activity. To investigate this we have examined sodium pump molecular activity and microsomal membrane lipid composition in the brain of five mammalian and eight avian species ranging in size from 30 g mice to 280 kg cattle and 13 g zebra finches to 35 kg emus, respectively. Sodium pump (Na+,K+-ATPase) activity was higher in the smaller species and showed a significant allometric decline with body mass in both the mammals (μmol Pi h-1 mg wet …

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The Network Centric Environment Viewed Through The Lens Of Activity Theory, Irena Ali, Leoni Warne, Helen M. Hasan Jan 2005

The Network Centric Environment Viewed Through The Lens Of Activity Theory, Irena Ali, Leoni Warne, Helen M. Hasan

Faculty of Commerce - Papers (Archive)

A network centric (NC) environment has the potential to transform the ways in which people gather, share, and process information with connectivity achieved thorough technological and social networks. This is of relevance to the military environment which is
characterised by constant change and uncertainty, and exposed to the vagaries of the political and economic climate. This chapter will analyse human activities in the military network centric context
through the lens of the Cultural-Historical Activity Theory. Based on current research findings it is proposed that the activity of sense-making is central to common awareness and decision making, through information sharing, in …

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Inter-Activity: An Activity Theory Model For Socio-Technical Work Spaces, Alanah Kazlauskas, Kate Crawford Jan 2005

Inter-Activity: An Activity Theory Model For Socio-Technical Work Spaces, Alanah Kazlauskas, Kate Crawford

Faculty of Commerce - Papers (Archive)

The issues that face human society are often addressed in a sociotechnical context that utilizes both social and technical tools. Such socio-technical milieux do not just happen but evolve over time. The ongoing emergence of more and more complex socio-technical contexts presents challenges to those involved as well as for sociocultural researchers. Vygotsky's (1978) Cultural Historical Activity Theory has been expanded upon by a number of researchers including Engestrom (1999) in order to develop understandings of work-based activity systems with a view to the identification of tensions within and to further development of those activity systems. Other researchers (Lave & …

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Replication Termination In Escherichia Coli: Structure And Anti-Helicase Activity Of The Tus-Ter Complex, Cameron Neylon, Andrew V. Kralicek, Thomas M. Hill, Nicholas E. Dixon Jan 2005

Replication Termination In Escherichia Coli: Structure And Anti-Helicase Activity Of The Tus-Ter Complex, Cameron Neylon, Andrew V. Kralicek, Thomas M. Hill, Nicholas E. Dixon

Faculty of Science, Medicine and Health - Papers: part A

The arrest of DNA replication in Escherichia coli is triggered by the encounter of a replisome with a Tus protein-Ter DNA complex. A replication fork can pass through a Tus-Ter complex when traveling in one direction but not the other, and the chromosomal Ter sites are oriented so replication forks can enter, but not exit, the terminus region. The Tus-Ter complex acts by blocking the action of the replicative DnaB helicase, but details of the mechanism are uncertain. One proposed mechanism involves a specific interaction between Tus-Ter and the helicase that prevents further DNA unwinding, while …

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A Survey Of Martian Dust Devil Activity Using Mars Global Surveyor Mars Orbiter Camera Images, Jenny A. Fisher, Mark I. Richardson, Claire E. Newman, Mark A. Szwast, Chelsea Graf, Shabari Basu, Shawn P. Ewald, Anthony D. Toigo, R. John Wilson Jan 2005

A Survey Of Martian Dust Devil Activity Using Mars Global Surveyor Mars Orbiter Camera Images, Jenny A. Fisher, Mark I. Richardson, Claire E. Newman, Mark A. Szwast, Chelsea Graf, Shabari Basu, Shawn P. Ewald, Anthony D. Toigo, R. John Wilson

Faculty of Science - Papers (Archive)

A survey of dust devils using the Mars Global Surveyor (MGS) Mars Orbiter Camera (MOC) wide- and narrow-angle (WA and NA) images has been undertaken. The survey comprises two parts: (1) sampling of nine broad regions from September 1997 to July 2001 and (2) a focused seasonal monitoring of variability in the Amazonis region, an active dust devil site, from March 2001 to April 2004. For part 1, dust devils were identified in NA and WA images, and dust devil tracks were identified in NA images. Great spatial variability in dust devil occurrence is highlighted, with Amazonis Planitia being the …

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Enzyme Activity And Flexibility At Very Low Hydration, V Kurkal, R M. Daniel, John L. Finney, Moeava Tehei, R V. Dunn, Jeremy C. Smith Jan 2005

Enzyme Activity And Flexibility At Very Low Hydration, V Kurkal, R M. Daniel, John L. Finney, Moeava Tehei, R V. Dunn, Jeremy C. Smith

Faculty of Science, Medicine and Health - Papers: part A

Recent measurements have demonstrated enzyme activity at hydrations as low as 3%. This raises the question of whether hydration-induced enzyme flexibility is important for activity. Here, to address this, picosecond dynamic neutron scattering experiments are performed on pig liver esterase powders at 0%, 3%, 12%, and 50% hydration by weight and at temperatures ranging from 120 to 300 K. At all temperatures and hydrations, significant quasielastic scattering intensity is found in the protein, indicating the presence of anharmonic, diffusive motion. As the hydration increases, a temperature-dependent dynamical transition appears and strengthens involving additional diffusive motion. The implication of these results …

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Water Loss As A Function Of Energy Intake, Physical Activity And Season, Klaas R. Westerterp, Guy Plasqui, Annalies H. C Goris Jan 2005

Water Loss As A Function Of Energy Intake, Physical Activity And Season, Klaas R. Westerterp, Guy Plasqui, Annalies H. C Goris

Faculty of Social Sciences - Papers (Archive)

Although water is an important nutrient, there are no recommended intake values. Here, water intake, energy intake, physical activity and water loss was measured over 1 week in summer and in winter. Subjects were healthy volunteers, forty-two women and ten men, mean age of 29 (sd 7) years and mean BMI 21·8 (sd 2·2) kg/m2. Water intake was measured with a 7 d food and water record. Physical activity level (PAL) was observed as the ratio of total energy expenditure, as measured with doubly labelled water, to resting energy expenditure as measured in a respiration chamber. Water loss …

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Eliciting And Specifying Requirements For Highly Interactive Systems Using Activity Theory, Robert B. K. Brown, Peter Hyland, Ian C. Piper Jan 2005

Eliciting And Specifying Requirements For Highly Interactive Systems Using Activity Theory, Robert B. K. Brown, Peter Hyland, Ian C. Piper

Faculty of Engineering and Information Sciences - Papers: Part A

The processes of eliciting user requirements and formalising these into specifications are critical for the success of highly interactive systems. These processes are still poorly understood, partly because current methods are usually ad hoc and lack any theoretical basis. A number of researchers have used Activity Theory (AT) to refine these processes and have met with some success. To date, this approach has been more useful explaining the processes post hoc. This positional paper proposes an AT method for requirement elicitation and specification definition. The method is sufficiently prescriptive and well formed that it does not require any detailed understanding …

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Systems Resemblance And Workpractice Evolution: Implications For Work Activity (Re)Design, Rodney J. Clarke Jan 2005

Systems Resemblance And Workpractice Evolution: Implications For Work Activity (Re)Design, Rodney J. Clarke

Faculty of Commerce - Papers (Archive)

This paper is concerned with addressing the question of how apparently disparate and unconnected systems can resemble each other. The question of what counts as a systems resemblance necessitates developing contextual workpractice descriptions associated with the systems features and ultimately entire systems. Using systemic semiotics an apparent ontogenetic convergence between entirely different systems is used to show that systems resemblance can be inferred when the constituent workpractices of information systems consist of comparable register features and especially if they exhibit comparable generic features. The implications of these findings for a new class of work activity (re)design practices are considered.

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Socio-Technical Systems: From Individual Transactions To Situated Community Activity, Helen M. Hasan Jan 2005

Socio-Technical Systems: From Individual Transactions To Situated Community Activity, Helen M. Hasan

Faculty of Commerce - Papers (Archive)

Although basic concepts of Activity Theory were articulated almost a century ago, they have stood the test of time and are proving to be appropriate for research into modem situation involving the use of socio-technical systems. Over the past decades the field of Information Systems has advanced from a focus on routine transaction processing systems to more sophisticated applications that support situated community activity. This chapter will describe how Activity Theory is becoming increasing relevant to these types of systems and can be complemented by other approaches such as Complexity Theory and a particular Knowledge Lens. Research is presented that …

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A Contextual Approach To Design And Development Of Interfaces For Search Engines, Using Activity Theory As The Basis For Informing Design Decisions, Joseph A. Meloche, Li Cheng Jan 2005

A Contextual Approach To Design And Development Of Interfaces For Search Engines, Using Activity Theory As The Basis For Informing Design Decisions, Joseph A. Meloche, Li Cheng

Faculty of Commerce - Papers (Archive)

The goal of this study is to support the design of more effective search engines. The research presented in this chapter investigates the design of search engines in the context of information seeking
activities. This study is also informed by Activity Theory and considers Information Seeking to be a Keystone Activity. This improvement in search engine design takes into consideration the context of users, and elicits and captures users' explicit and implied requirements. The study uses Q-methodology to elicit the subjective understanding of the participants thought the phases provided by the methodology. This entails collecting, sorting and analysis of detailed …

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A Campus Portal Development Methodology To Match Stakeholder Activity, Tharitpong Fuangvut, Helen M. Hasan Jan 2005

A Campus Portal Development Methodology To Match Stakeholder Activity, Tharitpong Fuangvut, Helen M. Hasan

Faculty of Commerce - Papers (Archive)

Although introduced less than seven years ago, a Campus Portal (CP) can be considered as an emerging technological innovation within higher education institutions. A large number have already adopted the concept and are currently implementing some type of portal to extend the services of their Web site and information systems to support the activities of institutional stakeholders, especially students. There is some literature recommending sets of characteristics and functionality for successful CPs, in particular personalisation and customisation. However there is a lack of evidence on which aspects of core attributes lead to the failure of a portal to satisfy user …

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Articulating Knowledge Work: The Contributions Of Activity Theory And Task-Based Knowledge Management, Henry Linger, Frada Burstein, Helen M. Hasan Jan 2005

Articulating Knowledge Work: The Contributions Of Activity Theory And Task-Based Knowledge Management, Henry Linger, Frada Burstein, Helen M. Hasan

Faculty of Commerce - Papers (Archive)

This chapter addresses issues of knowledge work in organisations with a concern that mainstream knowledge management (KM) has fallen short of expectations. The real nature of knowledge work remains hidden, and thus inaccessible, to those who are trying to improve organisational outcomes through KM practices. The authors have conducted independent research within a new discourse on knowledge work in the context of modem complex organisations, the results of which are converging to a common understanding of this critical phenomenon. Their two theoretical frameworks, one task-based and one activity-based, are described here as eminently suited to this research. Two sets of …

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An Activity Theory Analysis Of A Case Of It-Driven Organisational Change, Wannapa Suratmethakul, Helen Hasan Jan 2004

An Activity Theory Analysis Of A Case Of It-Driven Organisational Change, Wannapa Suratmethakul, Helen Hasan

Faculty of Commerce - Papers (Archive)

The paper describes unexpected problems encountered in the automation of a scheduling process using an IT application already in use in other similar organisations. A grounded theory approach was used to collect and categorise data on the case. Activity Theory was then used to analyse the attempt by management to implement organisational change through the introduction of the system. The findings suggest that it is inadvisable to impose organisational change through the introduction of a complex IT system, particularly when this disrupts entrenched decision-making processes of the organisation.

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Geomagnetic Activity Forcing Of The Northern Annular Mode Via The Stratosphere, Daniel Palamara, Edward Bryant Jan 2004

Geomagnetic Activity Forcing Of The Northern Annular Mode Via The Stratosphere, Daniel Palamara, Edward Bryant

Faculty of Science, Medicine and Health - Papers: part A

We consider various aspects of the link between solar-modulated geomagnetic activity and the Northern Annular Mode (NAM). Our results indicate that the geomagnetic forcing of atmospheric circulation in the Northern Hemisphere is temporally and seasonally restricted, modulated by the Quasi-Biennial Oscillation (QBO), and reliant on stratosphere-troposphere coupling. When the data are restricted to January values after 1965, for years in which the January QBO is eastwards, the correlation coefficient between the geomagnetic AA index and the NAM is 0.85. These results can account for many of the enigmatic features of Northern Hemisphere circulation.

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Learning And Doing In Communities: Understanding Knowledge Management Through The Lens Of Activity Theory, Helen M. Hasan Jan 2004

Learning And Doing In Communities: Understanding Knowledge Management Through The Lens Of Activity Theory, Helen M. Hasan

Faculty of Commerce - Papers (Archive)

No abstract provided.

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Known 'Bugs' In Cultural Historical Activity Theory, John G. Findlay Jan 2003

Known 'Bugs' In Cultural Historical Activity Theory, John G. Findlay

Faculty of Commerce - Papers (Archive)

When Cultural-Historical Activity Theory (CHAT) was first propounded by the Vygotskian school of Russian psychologists in the 1920s it offered a robust explanation of how human development is mediated by cultural as well as biological influences. Along the way, CHAT has acquired some "bugs" or usability difficulties by remaining isolated from other theories that have a common heritage. This paper explores how the theory may have evolved if Vygotsky was alive today. Revisions to CHAT are proposed that borrow from complexity theory, innovation theory, group dynamics and Flow theory to explain the evolution of minds, tools and cultures as a …

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Endogenous Redox Activity In Mouse Spermatozoa And Its Role In Regulating The Tyrosine Phosphorylation Events Associated With Sperm Capacitation, Heath W. Ecroyd, Russell C. Jones, Robert J. Aitken Jan 2003

Endogenous Redox Activity In Mouse Spermatozoa And Its Role In Regulating The Tyrosine Phosphorylation Events Associated With Sperm Capacitation, Heath W. Ecroyd, Russell C. Jones, Robert J. Aitken

Faculty of Science - Papers (Archive)

We investigated the role of endogenous redox activity in regulating the signal transduction pathway leading to tyrosine phosphorylation in mouse spermatozoa. Endogenous redox activity was monitored using a luminol-peroxidase chemiluminescent probe. Chemiluminescence increased in spermatozoa that were actively undergoing cAMP-mediated tyrosine phosphorylation events associated with capacitation and was inhibited in a dose-dependent manner by addition of catalase or diphenylene iodonium, both of which also inhibited tyrosine phosphorylation within the cell at points downstream of cAMP. Excluding bicarbonate from the incubation medium reduced the redox activity of sperm by 80-90% and dramatically reduced tyrosine phosphorylation. This study provides the first evidence …

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Website Usability In Context: An Activity Theory Based Usability Testing Method, Lejla Vrazalic Jan 2003

Website Usability In Context: An Activity Theory Based Usability Testing Method, Lejla Vrazalic

Faculty of Commerce - Papers (Archive)

Traditional laboratory based usability testing methodologies are plagued with shortcomings which affect the results of the testing process and their validity. The results of a preliminary study of this type of usability testing with 34 users indicate two categories of key shortcomings. A new summative website usability testing methodology based on the notion of distributed usability and Activity Theory is presented as a means of overcoming these problems. This paper describes the theoretical foundations and development of the methodology which is currently being evaluated and refined.

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Encouraging Creativity And Intellectual Stimulation: An Exercise That Forces Students To Think Outside The Box, John E. Barbuto Jr., Marilyn J Bugenhagen, Jill M. Stohs, Gina S. Matkin Jan 2003

Encouraging Creativity And Intellectual Stimulation: An Exercise That Forces Students To Think Outside The Box, John E. Barbuto Jr., Marilyn J Bugenhagen, Jill M. Stohs, Gina S. Matkin

Department of Agricultural Leadership, Education, and Communication: Faculty Publications

This exercise involves a hands-on approach to generating innovation and creativity in the workplace. It is feasible as a follow-up, special-topic activity in intellectual stimulation in full-range or transformational leadership training. Participants are presented with the seemingly impossible task of integrating diverse products or services into a single business plan, forcing them to think outside the box. This exercise features lateral and innovative thinking in a highly interactive session, producing innovative and creative solutions from participants. After successfully completing this exercise, participants will be more confident in their ability to creatively solve many challenges that at first glance seem impossible. …

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Government Business Process Analysis With Activity Theory, Peter A. J Larkin Jan 2003

Government Business Process Analysis With Activity Theory, Peter A. J Larkin

Faculty of Commerce - Papers (Archive)

Activity Theory tells us that a motivated person or group performs an activity directed at an object in order to transform the object into desired outcomes to fulfil a need. It also tells us that instruments and the community mediate human activity. The New South Wales state parliament in Australia performs the activity of creating Acts and those Acts prescribe within them the objects of the Act and the desired outcomes. To achieve the desired outcomes, the Act will establish or constitute the necessary instruments. This paper describes an application of Yrjo Engestrom's Activity Theory model, or structure of human …

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Activity As A Unit Of Analysis For Knowledge Management Frameworks, Leoni Warne, Irena Ali, Helen Hasan Jan 2003

Activity As A Unit Of Analysis For Knowledge Management Frameworks, Leoni Warne, Irena Ali, Helen Hasan

Faculty of Commerce - Papers (Archive)

The authors of this paper take the view that knowledge management is a set of practices for systematically adding value to the knowlege of individuals, which is generated and shaped through interaction with others. It is therefore appropriate that knowledge management research be conducted in the context of particular organisations, focusing on local activities. To that end two of the authors have conducted a four-year research program investigating the factors in organizations that enhance and enable the assimilation, generation, sharing and building of knowledge that transfonns an organization into a learning organization. Human activities in organisational contexts have been analysed …

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Environmental Factors Associated With Adults' Participation In Physical Activity: A Review, Nancy Humpel, Neville Owen, Eva Leslie Jan 2002

Environmental Factors Associated With Adults' Participation In Physical Activity: A Review, Nancy Humpel, Neville Owen, Eva Leslie

Faculty of Social Sciences - Papers (Archive)

Background: Promoting physical activity is a public health priority, and changes in the environmental contexts of adults’ activity choices are believed to be crucial. However, of the factors associated with physical activity, environmental influences are among the least understood. Method: Using journal scans and computerized literature database searches, we identified 19 quantitative studies that assessed the relationships with physical activity behavior of perceived and objectively determined physical environment attributes. Findings were categorized into those examining five categories: accessibility of facilities, opportunities for activity, weather, safety, and aesthetic attributes. Results: Accessibility, opportunities, and aesthetic attributes had significant associations with physical activity. …

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Can Motivational Signs Prompt Increases In Incidental Physical Activity In An Australian Health-Care Facility?, A L. Marshall, A E. Bauman, C Patch, J Wilson, J Chen Jan 2002

Can Motivational Signs Prompt Increases In Incidental Physical Activity In An Australian Health-Care Facility?, A L. Marshall, A E. Bauman, C Patch, J Wilson, J Chen

Faculty of Health and Behavioural Sciences - Papers (Archive)

This study aimed to evaluate whether a stairpromoting signed intervention could increase the use of the stairs over the elevator in a health-care facility. A time-series design was conducted over 12 weeks. Data were collected before, during and after displaying a signed intervention during weeks 4–5 and 8–9. Evaluation included anonymous counts recorded by an objective unobtrusive motion-sensing device of people entering the elevator or the stairs. Self-report data on stair use by hospital staff were also collected. Stair use significantly increased after the first intervention phase (P 0.02), but after the intervention was removed stair use decreased back towards …

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