4,729 research outputs found
Book Discussion : PJ Powers
No full textThe UJ Campus Health Services and the Student Affairs Division in partnership with the UJ Library invite you to meet PJ Powers (Thandeka) the co-author of the book HERE I AM About the book: Here I Am, written with Marianne Thamm, is an intimate and hilarious account of the life and times of one of this country’s most recognisable and enduring performers. From the dizzying heights of international stardom to the dark depths of her struggle with alcohol, this is a must-read to explore the heady mix of politics and music of the time. More than just a story about the personal journey of one of South Africa’s most beloved music icons, this extraordinary memoir of PJ Powers – or Thandeka, as she was affectionately renamed by Soweto crowds – is set against the turbulent backdrop of South Africa’s recent political history. It features a gallery of political leaders and international celebrities, including the likes of Nelson Mandela, Graça Machel, Chris Hani, Joaquim Chissano, Queen Elizabeth II, Brenda Fassie, Sharon Stone and Robert De Niro. Facilitator: Prof Alban Burke, Director – PsyCad, University of Johannesburg PJ Powers will also perform a few songs on the day. Date: 27 August 2015 Time: 16:30 for 17:00 Venue: Auditorium (6th Floor), APK Library, University of Johannesburg (corner Kingsway and University Road, Auckland Park) RSVP: By Wednesday, 26 August 2015 to Theodorah Modise on [email protected] / 011 559 226
Book Discussion : PJ Powers
No full textThe UJ Campus Health Services and the Student Affairs Division in partnership with the UJ Library invite you to meet PJ Powers (Thandeka) the co-author of the book HERE I AM About the book: Here I Am, written with Marianne Thamm, is an intimate and hilarious account of the life and times of one of this country’s most recognisable and enduring performers. From the dizzying heights of international stardom to the dark depths of her struggle with alcohol, this is a must-read to explore the heady mix of politics and music of the time. More than just a story about the personal journey of one of South Africa’s most beloved music icons, this extraordinary memoir of PJ Powers – or Thandeka, as she was affectionately renamed by Soweto crowds – is set against the turbulent backdrop of South Africa’s recent political history. It features a gallery of political leaders and international celebrities, including the likes of Nelson Mandela, Graça Machel, Chris Hani, Joaquim Chissano, Queen Elizabeth II, Brenda Fassie, Sharon Stone and Robert De Niro. Facilitator: Prof Alban Burke, Director – PsyCad, University of Johannesburg PJ Powers will also perform a few songs on the day. Date: 27 August 2015 Time: 16:30 for 17:00 Venue: Auditorium (6th Floor), APK Library, University of Johannesburg (corner Kingsway and University Road, Auckland Park) RSVP: By Wednesday, 26 August 2015 to Theodorah Modise on [email protected] / 011 559 226
Conserving idealized landscapes: past history, public perception and future management in the New Forest (UK)
No full textThe New Forest is one of the most visited regions of Britain. It has recently been designated a National Park in recognition of its unique wood pasture ecosystems, a traditional land-use system, its magnificent scenery and recreational potential, and its biodiversity importance. The Forest's highly prized Ancient and Ornamental (A&O) woodlands are a result of complex interactions among human activities of several kinds and the ecology of the dominant species-beech and oak-under the climate conditions of the last one to two millennia. Major changes in management practices over the 20th century, combined with the historical imprint of previous centuries of use, have set the A&O woodlands on a trajectory that means their nature and appearance will inevitably change over the coming decades. When the potential stresses that will be imposed by 21st century climate change are also considered, it will be challenging to find a management strategy to maintain A&O woodlands in their present form. Beech, which owes its current dominance largely to human disturbances of the woodland ecosystem, will be particularly stressed under future conditions. Future conservation policies, and hence management strategies, must be flexible as to the species composition and structure of future woodlands. However, the wide range of users and their different values add further complexity to forest management, and managers must also focus on issues of public perception. For example visitors idealize current landscapes, and this exerts a pressure to maintain the status quo as far as appearance is concerned that will be hard to achieve in practice. Management strategies will be greatly constrained unless conflicts about values and uses are resolved
Reliability and effectiveness of Ellenberg’s indices in checking flora and vegetation changes induced by climatic variations
No full textTwo methods are proposed to assess the significance of time-spanned local variations of Ellenberg’s indicator values in floristic and phytosociological data sets respectively. Both methods are based on frequencies and averages of the indicator values within and among data sets. Main goal of proposed methods is to determine the thresholds to consider significant the observed variations. In the aim to relate the observed floristic variations to recent climatic changes, attention was focused on the Ellenberg’s indices dealing with the main climatic variables: heliophany, temperature and precipitation. Study-cases from Zannone island (Pontine archipelago, Mediterranean region), Inferno valley (Rome, Mediterranean region) and Braulio valley (Stelvio National Park, Alpine region) are reported. For Mediterranean data-sets, integration and adjustments to the Ellenberg’s indicator values have been adopted
Technologically mediated learning: The future of training in Australia
No full textHosie, PJ ORCiD: 0000-0003-2585-024XFollowing a review of the economic imperatives currently facing Australia,
the future directions training will take are examined. Related training issues are considered; such as multiskilling, on-the-job training and legal issues. The author predicts that technologically mediated learning (TML),
especially interactive multimedia, will gain ascendancy as the predominant mode of delivery for training
Questionnaires in clinical trials: guidelines for optimal design and administration.
No full textA good questionnaire design for a clinical trial will minimise bias and maximise precision in the estimates of treatment effect within budget. Attempts to collect more data than will be analysed may risk reducing recruitment (reducing power) and increasing losses to follow-up (possibly introducing bias). The mode of administration can also impact on the cost, quality and completeness of data collected. There is good evidence for design features that improve data completeness but further research is required to evaluate strategies in clinical trials. Theory-based guidelines for style, appearance, and layout of self-administered questionnaires have been proposed but require evaluation
Data from "Urban Vegetation Types are not Perceived Equally in Providing Ecosystem Services and Disservices"
No full textData used in Figures 2, 3, and 4 of the publication;Drillet Z#, Fung TK#, Leong RAT, Sachidhanandam U, Edwards PJ, Richards DR (2020). Urban vegetation types are not perceived equally in the provision of ecosystem services and disservices. Sustainability 12: 2076. #Indicates equal contribution.Available open access:https://www.mdpi.com/2071-1050/12/5/2076</div
A 0.7-V 0.43-pJ/cycle Wakeup Timer based on a Bang-bang Digital-Intensive frequency-Locked-Loop for IoT Applications
No full textA 40-nm CMOS wakeup timer employing a bang-bang digital-intensive frequency-locked loop for Internet-of-Things applications is presented. A self-biased ΣΔ digitally controlled oscillator (DCO) is locked to an RC time constant via a single-bit chopped comparator and a digital loop filter. Such highly digitized architecture fully exploits the advantages of advanced CMOS processes, thus enabling operation down to 0.7 V and a small area (0.07 mm 2 ). Most circuitry operates at 32× lower frequency than the DCO in order to reduce the total power consumption down to 181 nW. High frequency accuracy and a 10× enhancement of long-term stability is achieved by the adoption of chopping to reduce the effect of comparator offset and 1/f noise and by the use of ΣΔ modulation to improve the DCO resolution. The proposed timer achieves the best energy efficiency (0.43 pJ/cycle at 417 kHz) over prior art while keeping excellent on-par long-term stability (Allan deviation floor <;20 ppm) and temperature stability (106 ppm/°C).Accepted Author Manuscript(OLD)Applied Quantum Architecture
Biology and interspecific interactions of the alien crab Percnon gibbesi in the Maltese Islands
No full textSpatial and bathymetric distribution, population density, habitat preferences, fecundity, breeding season and interspecific
interactions of the alien grapsoid crab Percnon gibbesi (H. Milne-Edwards, 1853) from the Maltese Islands (Malta and Gozo)
are compared among localities in the Mediterranean where established populations have been reported since 1999. In the
Maltese Islands, habitat preferences and bathymetric distribution were similar to those in other Mediterranean localities.
Spatial distribution was found to be limited by the availability of the boulder habitat in which this crab nearly always occurs.
Fecundity was higher in the Maltese Islands than in Linosa and Lampedusa, the breeding season lasting from the end of
May until September. On Maltese shores the habitat of the alien overlapped with that of the native grapsid Pachygrapsus
marmoratus (Fabricius, 1787) (Crustacea: Brachyura: Grapsoidea) and, to a lesser extent, that of the native xanthid Eriphia
verrucosa (Forska°l, 1775). Laboratory studies to assess the possible interactions of the alien species with P. marmoratus
suggest that the latter shows a competitive advantage over P. gibbesi, since 80.8% of encounters between the two species were
initiated by P. marmoratus, and in 80% of the encounters it prevailed. This suggests that P. marmoratus is unlikely to be
excluded from its natural habitat by the alien species, and that significant spatial resource partitioning on the part of P.
marmoratus is unlikely to occur.peer-reviewe
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