13 hasil untuk "Ian Cook"
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Artikel Jurnal
Deriving objectively-measured sedentary indices from free-living accelerometry data in rural and urban African settings: a cost effective approach
Abstract Objectives To investigate the agreement between two data reduction approaches for detecting sedentary breaks from uni-axial accelerometry data collected in human participants. Free-living, uni-axial accelerometer data (n = 318) were examined for sedentary breaks using two different methods…
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Artikel Jurnal
Seven-day, free-living, objectively-measured ambulatory activity: a data set from the Dikgale Health and Demographic Surveillance System site, Limpopo Province, South Africa
Abstract Objectives To investigate first, the level, distribution, patterns and prevalence of seven-day, objectively-measured physical activity (ambulation) in a rural health and demographic surveillance system (HDSS) site in South Africa, across demographic, temporal and anthropometric measures…
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Artikel Jurnal
Objectively-measured step cadence and walking patterns in a rural African setting: a cross-sectional analysis
Abstract Objectives To investigate free-living, accelerometry-derived step cadence and walking strategy parameters in 263 adult women (19–56 years) within a rural African setting. Participants were categorised into weight groups: Under-to-Normal Weight (UW/NW: 85% of participants were classified as…
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Artikel Jurnal
Objectively-measured physical activity patterns and longitudinal weight category status in a rural setting
Abstract Objectives To investigate the relationship between longitudinal weight-change and objectively-measured physical activity (PA) in a rural African setting in 143 adults (≥ 30 years), using data from two cross-sectional surveys, separated by approximately 10 years. Participants were…
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Artikel Jurnal
Agreement between self-reported and actigraphy-derived sleep duration in rural South African adults
Background: Self-reported sleep duration is widely used in epidemiological research, but validation against objective measures remains limited in African settings. This study assessed agreement between self-reported and actigraphy-derived sleep duration in rural South African adults. Methods: A…
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Artikel Jurnal
Fabrication critique et web 2.0
Recent reviews of new media scholarship have criticised it for paying little attention to the social and environmental (in)justices in its technical infrastructure. At the same time, scholars of social and environmental (in)justice are experimenting with web2.0, using wikis, blogs, twitter and…
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Artikel Jurnal
Objectively-measured sleep patterns and cardiometabolic health in a rural South African setting: a cross sectional analysis
Abstract Background To investigate the relationship between objectively-measured, free-living sleep patterns, and cardiometabolic health, in a rural South African health and demographic surveillance site. Methods Wrist-mounted actigraphy data was collected over nine days from 167 adults (≥ 40…
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Artikel Jurnal
Rethinking Silicon Valley: New Perspectives on Regional Development
Silicon Valley in Southern California has, over the past 30 years, become a model for high technology development in many parts of the world. Associated with Silicon Valley is a common rhetoric and mythology that explains the origins of this area of high technology agglomeration and indeed the…
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Artikel Jurnal
Descriptive epidemiology of objectively-measured, free-living sleep parameters in a rural African setting
Abstract Objectives To investigate the descriptive nature of objectively-measured, free-living sleep quantity and quality, and the relationship to adiposity, in a rural African setting in 145 adults (≥ 40 years, female: n = 104, male: n = 41). Wrist-mounted, triaxial accelerometry data was…
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Artikel Jurnal Teks lengkap
Tribological Properties of Multilayer CVD Coatings Deposited on SiAlON Ceramic Milling Inserts
This work characterises the structure and mechanical properties, such as adhesion, of two different chemical vapour deposition (CVD) coatings deposited onto silicon aluminium oxynitride (Si3N4 + Al2O3 + Y2O3) round (RNGN) milling cutter tooling inserts. These inserts are often known by the trade…
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Artikel Jurnal
Association between cardiometabolic health and objectively-measured, free-living sleep parameters: a pilot study in a rural African setting
Abstract Objectives To investigate the relationship between objectively-measured, free-living sleep quantity and quality, and cardiometabolic health, in a rural African setting in 139 adults (≥40 years, female: n = 99, male: n = 40). Wrist-mounted, tri-axial accelerometry data was collected over 9…
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Artikel Jurnal
Determinants of body mass index by gender in the Dikgale Health and Demographic Surveillance System site, South Africa
Background: The study was conducted in the Dikgale Health and Demographic Surveillance System (DHDSS) site where we have observed increasing obesity levels, particularly in women, despite evidence of high physical activity (PA) and a relatively low daily energy intake. Objective: This study aimed…
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Artikel Jurnal Teks lengkap
Characterising Ionised Air Metalworking Fluid Application During Titanium Alloy Shoulder Milling
As manufacturers seek to improve cutting process sustainability, alternative metalworking fluid (MWF) strategies are increasingly being explored. For the first time, this study characterises tool wear when shoulder milling both Grade 5 titanium (Ti-6Al-4V) and Grade 2 commercially pure titanium…