Supporting school career education with an online community

This thesisi s an analysisi f a participatory action researchp roject, involving several interventions with school students in a series of iterative stages, exploring ways to take school student career education out of the confines of the schools themselvesa nd into the wider community; to introducep ersonc enterednesas s a core value in careere ducation;a nd to explore the effectivenesso f using online social and community networks to support career education generally. A software probe was developed consisting of a series of career education web pages linked to asynchronous online discussion. In the final data gathering trial, 40 people (including 30 school students from two Edinburgh schools and 10 adult `community' participants) contributed to a six week career education programme involving. cycles of face to face classroom work followed by pseudonymous, asynchronous, online discussion between the school students and the community participants. The data analysis shows that despite the open and relatively unconstrained format of the discussion, topics normally covered in mainstream career education classes were covered spontaneously by the participants. In addition, however, discussion ranged more widely, taking a more holistic perspective in some cases and following the personal interests and issues of concern of the participants (such as balancing occupational and family concerns). The participants went further, problematisingm any of the discourseso f conventionalc areere ducationa nd explicitly challenging received wisdom about the value of early occupational choice and the rational decision making process. The conventional career education curriculum was both extended and contested. There is analysis of the benefits of pseudonymity, the role of the adult contributors, the online forum, and the experience of the student participants. Ultimately the thesis raises questions about the humanist values underpinning careere ducation( such as person-centredneshs,o lism and emancipation)a rguing iv that Career Education and Guidance can be about value creation as much as transmission of dominant values.EThOS - Electronic Theses Online ServiceGBUnited Kingdo

Supporting school career education with an online community

This thesisi s an analysisi f a participatory action researchp roject, involving several interventions with school students in a series of iterative stages, exploring ways to take school student career education out of the confines of the schools themselvesa nd into the wider community; to introducep ersonc enterednesas s a core value in careere ducation;a nd to explore the effectivenesso f using online social and community networks to support career education generally. A software probe was developed consisting of a series of career education web pages linked to asynchronous online discussion. In the final data gathering trial, 40 people (including 30 school students from two Edinburgh schools and 10 adult `community' participants) contributed to a six week career education programme involving. cycles of face to face classroom work followed by pseudonymous, asynchronous, online discussion between the school students and the community participants. The data analysis shows that despite the open and relatively unconstrained format of the discussion, topics normally covered in mainstream career education classes were covered spontaneously by the participants. In addition, however, discussion ranged more widely, taking a more holistic perspective in some cases and following the personal interests and issues of concern of the participants (such as balancing occupational and family concerns). The participants went further, problematisingm any of the discourseso f conventionalc areere ducationa nd explicitly challenging received wisdom about the value of early occupational choice and the rational decision making process. The conventional career education curriculum was both extended and contested. There is analysis of the benefits of pseudonymity, the role of the adult contributors, the online forum, and the experience of the student participants. Ultimately the thesis raises questions about the humanist values underpinning careere ducation( such as person-centredneshs,o lism and emancipation)a rguing iv that Career Education and Guidance can be about value creation as much as transmission of dominant values.EThOS - Electronic Theses Online ServiceGBUnited Kingdo

Supporting school career education with an online community.

This thesisi s an analysisi f a participatory action researchp roject, involvingseveral interventions with school students in a series of iterative stages, exploringways to take school student career education out of the confines of the schoolsthemselvesa nd into the wider community; to introducep ersonc enterednesas s acore value in careere ducation;a nd to explore the effectivenesso f using onlinesocial and community networks to support career education generally.A software probe was developed consisting of a series of career education webpages linked to asynchronous online discussion. In the final data gathering trial,40 people (including 30 school students from two Edinburgh schools and 10 adult`community' participants) contributed to a six week career education programmeinvolving. cycles of face to face classroom work followed by pseudonymous,asynchronous, online discussion between the school students and the communityparticipants.The data analysis shows that despite the open and relatively unconstrained formatof the discussion, topics normally covered in mainstream career education classeswere covered spontaneously by the participants. In addition, however, discussionranged more widely, taking a more holistic perspective in some cases andfollowing the personal interests and issues of concern of the participants (such asbalancing occupational and family concerns). The participants went further,problematisingm any of the discourseso f conventionalc areere ducationa ndexplicitly challenging received wisdom about the value of early occupationalchoice and the rational decision making process. The conventional careereducation curriculum was both extended and contested.There is analysis of the benefits of pseudonymity, the role of the adultcontributors, the online forum, and the experience of the student participants.Ultimately the thesis raises questions about the humanist values underpinningcareere ducation( such as person-centredneshs,o lism and emancipation)a rguingivthat Career Education and Guidance can be about value creation as much astransmission of dominant values

Trends in silicosis prevalence and the healthy worker effect among gold miners in South Africa: a prevalence study with follow up of employment status.

BACKGROUND: Given the intimate association between silicosis and tuberculosis, understanding the epidemiology of the South African gold mining industry silicosis epidemic is essential to current initiatives to control both silicosis and tuberculosis in this population, one of the most heavily affected globally. The study's objectives were to compare the prevalence of silicosis among working black gold miners in South Africa during 2004-2009 to that of previous studies, including autopsy series, and to analyse the influence of silicosis and/or tuberculosis on exiting employment. METHODS: Routine chest radiographs from a cohort of gold miners were read for silicosis by an experienced reader (I), and a subset re-read by a B-trained reader (II). Two methods of presenting the readings were used. Additionally, with baseline status of silicosis and previous or active tuberculosis as predictors, survival analysis examined the probability of exiting the workforce for any reason during 2006-2011. RESULTS: Reader I read 11 557 chest radiographs and reader II re-read 841. Overall, silicosis prevalence (ILO ≥ 1/0: 5.7 and 6.2% depending on reader method) was similar to the age adjusted prevalence found in a large study in 1984 (5.0%). When comparison was restricted to a single mine shaft previously studied in 2000, a decline in prevalence (ILO ≥ 1/1) was suggested for one of the reading methods (duration adjusted 20.5% vs. 13.0% in the current study). These findings are discordant with a long-term rising autopsy prevalence of silicosis over this period. Overall, relative to miners with neither disease, the adjusted hazard ratio for exiting employment during the follow-up period was 1.54 for baseline silicosis [95% confidence interval (CI) 1.17, 2.04], 1.71 for tuberculosis (95% CI 1.51, 1.94) and 1.53 for combined disease (95% CI 1.20, 1.96). CONCLUSIONS: This study found, a) there was no significant decline in overall silicosis prevalence among working black miners in the South African gold mining industry between 1984 and 2004-2009, and b) a possible decline at one mine shaft more recently. In the absence of evidence of declining respirable silica concentrations between the 1980s and 2000s, the trends found are plausibly due to a healthy worker survivor effect, which may be accelerating

Crystal Structures of the Type III Effector Protein AvrPphF and Its Chaperone Reveal Residues Required for Plant Pathogenesis

The avrPphF locus from Pseudomonas syringae pv. phaseolicola, the causative agent of bean halo-blight disease, encodes proteins which either enhance virulence on susceptible hosts or elicit defense responses on hosts carrying the R1 resistance gene. Here we present the crystal structures of the two proteins from the avrPphF operon. The structure of AvrPphF ORF1 is strikingly reminiscent of type III chaperones from bacterial pathogens of animals, indicating structural conservation of these specialized chaperones, despite high sequence divergence. The AvrPphF ORF2 effector adopts a novel "mushroom"-like structure containing "head" and "stalk" subdomains. The head subdomain possesses limited structural homology to the catalytic domain of bacterial ADP-ribosyltransferases (ADP-RTs), though no ADP-RT activity was detected for AvrPphF ORF2 in standard assays. Nonetheless, this structural similarity identified two clusters of conserved surface-exposed residues important for both virulence mediated by AvrPphF ORF2 and recognition of this effector by bean plants expressing the R1 resistance gene

Behavioral and Social Influences on Food Choice

Peer Reviewedhttp://deepblue.lib.umich.edu/bitstream/2027.42/75438/1/j.1753-4887.1998.tb01732.x.pd

CubeSat Active Thermal Control via Microvascular Carbon Fiber Channel Radiator

Small spacecraft rarely have space for any thermal control subsystems and often must perform operations in “burst” mode as a result. The few spacecraft who do have control rely on low-complexity thermal control systems which conduct heat to the bus structure and then radiate the heat away. These simplistic techniques are sufficient for low power missions in Low Earth Orbit (LEO) but are not capable of dumping the heat produced in new mission profiles that are in development. This is due to small spacecraft incorporating increasingly advanced subsystems which have difficult thermal control requirements such as propulsion systems or high-power antennas. The University of Illinois at Urbana-Champaign, in partnership with NASA Ames Research Center, is developing a thermal control system for small spacecraft. This control system uses a deployable radiator panel made from carbon fiber with micro-vascular circulatory system for coolant. This paper is a follow-up on the previous year’s SmallSat conference. A bench prototype of the thermal control subsystem was designed and built. The prototype underwent a range of thermal and vibration tests at NASA Ames. Test results and lessons learned are presented. Moving forward, test conclusions will require some design parameters to be changed and the subsystem will reach TRL 6 by the end of the two-year program