Its Time for a Total Curriculum Approach to Preservice Teacher Education Programs : a Personal Viewpoint.

This article contests the ways in which preservice teacher education programs have been conceptualised, planned and implemented in universities. The article, therefore, is NOT about responding in technocratic ways alone to institutional, practising school, and employer constraints. Rather, it is about conceptualising preservice teacher education programs so that intending graduates work towards becoming reflective practitioners with a commitment to social justice. Such a conceptualisation is considered appropriate given the increasing diversity of learners and learning settings; the increasing complexity of communities and society; the growing possibilities for engaging in truly collaborative approaches to teacher education; and the expanding challenge of fulfilling the multi-faceted role of teachers both now and in the future

The Synthesis and Study of Polycyclic Aromatic Systems

A comparative study is made of the properties and reactions of the two isomeric hydrocarbons, 7,15-dihydroheptazethrene and 1.14,11.12-dibenzo-5,7-dihydropentacene. A similar investigation is carried out on hydro-derivatives of 5. 6-dibenzo-zethrene and 1.2,4.5,6.7-tribenzotetracene. A chloro-derivative of 5. 6,12.13-dibenzozethrene is synthesised. The behaviour of heptazethrene (I) and 5. 6-benzozethrene (III) as normal aromatic hydrocarbons and the failure to observe any compound which could have the carbon skeleton of either 1.14,11.12-dibenzopentacene (II) or 1.2,4.5,6.7-tribenzotetracene (IV) are explained by the latter two compounds having no Kekule structure, while the single Kekule structures of heptazethrene (I) and 5.6-benzozethrene (III) are considered sufficient to ensure normal aromatic character. Dinaphtho-(2'.3' 1.2), (2".3":6.7)-pyrene (V), anthraceno-(2'.3':1.2)-pyrene (VI) and 1.14,4.5,9.10,13.14-tetrabenzoheptacene (VII) are synthesised. The absorption spectra of these hydrocarbons are discussed with relation to other benzologues of pyrene and electronic structures are proposed for hydrocarbons of this type. The reduction of 1,2,4,5-tetrabenzoylbenzene (VIII) with copper powder in sulphuric acid is investigated with a view to the possible preparation of a compound having a bond of the Dewar type. The major product is found to be 5,6-dibenzoyl-1,3-diphenylisobenzofuran (IX). The azine derivative of this diketone (X) is found to be closely related to 1,3-diphenyl-2',3'-isonaphthofuran (XI), which is obtained by reduction of 2,3-dibenzoylnaphthalene (XII). XI is the first example of a compound containing the 2,3-naphthoquinonoid system

Determinants of the green electricity tariff uptake in the UK

A number of countries offer domestic consumers the option of buying their electricity supply through a ‘green tariff’, whereby the supplier typically guarantees that all or part of the supply has been generated using renewable energy sources. Various studies have sought to identify variables describing and/or predicting why domestic consumers choose to purchase a green tariff. This study builds on previous work by reviewing the UK market in particular. Using data from the Understanding Society Survey (USS), a number of variables were tested for their predictive power. This included variables identified as statistically significant within other studies, and variables that – to the authors’ knowledge – have not been tested through other work. Results find that individuals in the highest income quartile, those with higher qualifications, those supporting the Green political party, those exhibiting strong environmental behaviour and those householdsnot in receipt of winter fuel payments were all more likely to have purchased green tariffs. Significant to a lesser degree were strong environmental attitudes and those households with some form of renewable energy technology installed

Preliminary Report of NRC Twin Otter Operations in the 1997 Southern Great Plains Experiment

From June 18 to July 17, 1997, the NRC Twin Otter atmospheric research aircraft was operated from Oklahoma City, U.S.A., in the Southern Great Plains 1997 (SGP97) Hydrology Experiment. The primary role of the aircraft was to measure the vertical fluxes of sensible and latent heat, CO2, ozone and momentum in the atmospheric boundary layer, along with supporting meteorological and radiometric data. Approximately 400 flux runs and 100 soundings were flown in 27 project flights over rural areas near Oklahoma City. This preliminary report documents the flight program, lists the instrumentation aboard the aircraft, and presents a summary of run-averaged data from each flux run. These data are from the in-field analysis and must be considered preliminary. A re-analysis incorporating updated calibrations is planned for the fall of 1997 followed by a more comprehensive technical report