Anatomy "steeplechase" online: necessity sometimes is the catalyst for innovation

In most medical schools, summative practical examination in Anatomy usually takes the format of a “steeplechase” (“spotters” or “bell ringers”) conducted in the gross anatomy laboratory using cadaveric material and prosected specimens. Recently, we have started to administer similar examinations online using the quiz facility in WebCT? and Moodle?. This article chronicles how we conceived and developed this method within the peculiar nature of our medical school setting. Over a five year period, practical summative examinations were organized as “steeplechase” online. The online examinations were administered using WebCT? and later Moodle? learning management software. Assessment “objects” were created from the materials available for anatomy teaching. These were digital images of cadaveric materials, radiological, and prosected specimens. In addition, short video clips of 30 seconds duration demonstrating muscle action were produced. These objects were optimized for online viewing and then uploaded onto the learning management software. A bank of questions (multiple choice or short answer type) was then created and linked to the assessment objects. These were used in place of the steeplechase in the computer laboratory. This method serves a crucial purpose in places like ours where continuous availability of human cadavers is impossible. Although time consuming initially, once questions are setup online, future retrieval, and administration becomes convenient especially where there are large batches of students. In addition, the online environment offers distinct advantages with regards to image quality, psychometric analysis of the examination and reduction of staff preparation time compared to traditional “steeplechase.” Anat Sci Educ 4: 115–118, 2011. © 2010 American Association of Anatomists.     

Acute and subacute oral toxicity of Litsea elliptica Blume essential oil in rats

Litsea elliptica Blume has been traditionally used to treat headache, fever, and stomach ulcer, and has also been used as an insect repellent. The acute and subacute toxicities of L. elliptica essential oil were evaluated orally by gavage in female Sprague-Dawley rats. For the acute toxicity study, L. elliptica essential oil was administered in doses from 500 to 4 000 mg/kg (single dose), and in the subacute toxicity test, the following doses were used: 125, 250, and 500 mg/kg, for 28 consecutive days. In the acute toxicity study, L. elliptica essential oil caused dose-dependent adverse behaviours and mortality. The median lethal dose value was 3 488.86 mg/kg and the acute non-observed-adversed-effect level value was found to be 500 mg/kg. The subacute toxicity study of L. elliptica essential oil did not reveal alterations in body weight, and food and water consumptions. The haematological and biochemical analyses did not show significant differences between control and treated groups in most of the parameters examined, except for the hemoglobin, mean cell hemoglobin concentration, mean cell volume, mean cell hemoglobin, serum albumin, and serum sodium. However, these differences were still within the normal range. No abnormalities or histopathological changes were observed in the liver, pancreatic islet of Langerhans, and renal glomerulous and tubular cells of all treated groups. In conclusion, L. elliptica essential oil can be classified in the U group, which is defined as a group unlikely to present an acute hazard according to World Health Organization (WHO) classification.     

Application of polyurethane geocomposites to help maintain track geometry for high-speed ballasted railway tracks

There are many issues surrounding the performance of critical assets on high-speed ballasted railway lines. At assets like switch & crossings and bridge transitions high track forces can be produced resulting in higher ballast settlements and hence track misalignments. The latter result in higher track forces and hence more settlement, leading to the need for increased track maintenance to ensure comfort and safety. Current technologies for solving issues like ballast movement under high-speed loading regimes are limited. However, a technique that has been well used across the UK and now increasingly overseas to stabilise and reinforce ballasted railway tracks is the application of in-situ polyurethane polymers, termed XiTRACK. This paper discusses how this technique can be used to solve these types of long-standing issues and presents actual polymer application profiles at two typical critical sites, namely a junction and a transition onto concrete slab-track.     

Applying brand management to higher education through the use of the Brand Flux Model™ – the case of Arcadia University

Within an increasingly more competitive landscape, Higher Education Institutions (HEIs) are becoming more marketized and promotionalized. Brand building is becoming a strategic administrative goal, yet clear brand management models are lacking. This paper utilizes the Brand Flux Model^? to assist in tracking the fluxing nature or historical patterns of branding practices, and provides a graphic representation for following changes in branding or changes in position that result in either Reinforcing an existing brand, or Revitalizing, Refocusing, Renaming, or Retiring a brand. Through a case analysis of an HEI that eventually underwent a radical renaming, the various phases of the Brand Flux Model^? are explored and the critical aspect of ongoing brand management efforts is reinforced. The paper also highlights why periodic brand audits are necessary to ascertain that what the institution believes it is promoting and projecting is consistent with the actual brand image held by stakeholders, and suggests that benchmarking brand management efforts and correlating them with the stage and actions of the Brand Flux Model^? can assist in understanding branding as a growth platform for service organizations. For practitioners, this study provides a model to assist in brand management and renaming scenarios, and offers insight into channels for optimal corporate strategy. It demonstrates that making changes in branding or changes in position in order to Revitalize, Refocus (rebrand and reposition) or even Rename a brand, and then Reinforce those decisions, is critical to maintaining brand health.     

对意识形态领域反分裂斗争的思考

当前我国意识形态领域的反分裂斗争形势严峻，我们必须高度重视这场没有硝烟的战争，以“三个代表一重要思想为指导，加强对群众的宣传教育，特别是面对面教育，增强反分裂斗争的实效性，同时，要充分重视网络空间的反分裂斗争，抵制西方的“文化侵略”。