Who is learning what from student evaluations of teaching?

Student evaluations of teaching (or SET) through anonymous survey forms are a consistent practice in higher education across the world yet research results vary considerably as to the reliability, validity and efficacy of SET. Nonetheless, the widespread use of SET for promotion and tenure decisions ensures that these results are high stakes for tertiary staff. The tension between the purposes of SET (to supposedly improve teaching) and the ramifications of SET results are explored. Staff and students tend to hold very different views of SET and the issue of maintaining high academic standards can be at risk. However, SET can be used as an opportunity for staff and students to work together on issues in teaching and learning that enhance quality for all concerned

An examination of the damage tolerance enhancement of carbon/epoxy using an outer lamina of spectra (R)

Low velocity instrumented impact testing was utilized to examine the effects of an outer lamina of ultra-high molecular weight polyethylene (Spectra) on the damage tolerance of carbon epoxy composites. Four types of 16-ply quasi-isotropic panels (0, +45, 90, -45) were tested. Some panels contained no Spectra, while others had a lamina of Spectra bonded to the top (impacted side), bottom, or both sides of the composite plates. The specimens were impacted with energies up to 8.5 J. Force time plots and maximum force versus impact energy graphs were generated for comparison purposes. Specimens were also subjected to cross-sectional analysis and compression after impact tests. The results show that while the Spectra improved the maximum load that the panels could withstand before fiber breakage, the Spectra seemingly reduced the residual strength of the composites

A damage tolerance comparison of IM7/8551 and IM8G/8553 carbon/epoxy composites

A damage tolerance study of two new toughened carbon fiber/epoxy resin systems was undertaken as a continuation of ongoing work into screening new opposites for resistance to foreign object impact. This report is intended to be a supplement to NASA TP 3029 in which four new fiber/resin systems were tested for damage tolerance. Instrumented drop weight impact testing was used to inflict damage to 16-ply quasi-isotropic specimens. Instrumented output data and cross-sectional examinations of the damage zone were utilized to quantify the damage. It was found that the two fiber/resin systems tested in this study were much more impact resistant than an untoughened composite such as T300/934, but were not as impact resistant as other materials previously studied

The influence of season, photoperiod, and pineal melatonin on immune function.

In addition to the well-documented seasonal cycles of mating and birth, there are also significant seasonal cycles of illness and death among many animal populations. Challenging winter conditions (i.e., low ambient temperature and decreased food availability) can directly induce death via hypothermia, starvation, or shock. Coping with these challenges can also indirectly increase morbidity and mortality by increasing glucocorticoid secretion, which can compromise immune function. Many environmental challenges are recurrent and thus predictable; animals could enhance survival, and presumably increase fitness, if they could anticipate immunologically challenging conditions in order to cope with these seasonal threats to health. The annual cycle of changing photoperiod provides an accurate indicator of time of year and thus allows immunological adjustments prior to the deterioration of conditions. Pineal melatonin codes day length information. Short day lengths enhance several aspects of immune function in laboratory studies, and melatonin appears to mediate many of the enhanced immunological effects of photoperiod. Generally, field studies report compromised immune function during the short days of autumn and winter. The conflict between laboratory and field data is addressed with a multifactor approach. The evidence for seasonal fluctuations in lymphatic tissue size and structure, as well as immune function and disease processes, is reviewed. The role of pineal melatonin and the hormones regulated by melatonin is discussed from an evolutionary and adaptive functional perspective. Finally, the clinically significance of seasonal fluctuations in immune function is presented. Taken together, it appears that seasonal fluctuations in immune parameters, mediated by melatonin, could have profound effects on the etiology and progression of diseases in humans and nonhuman animals. An adaptive functional perspective is critical to gain insights into the interaction among melatonin, immune function, and disease processes

The Importance of Failing Well: An Exploration of the Relationship between Resilience and Academic Achievement

Across any group of gifted students in any school there will always be a range of academic and other achievements. It is when these achievements are compared with measures of potential and the expectations of teachers and parents that a gifted child can sometimes be declared an underachiever. The 37 gifted students taking part in this study ranged in academic achievement from high achievers to underachievers. In part one of the study a questionnaire approach was used to measure their locus of control (LOC) and learned helplessness (LH) orientations and their tendency towards resilience or vulnerability. These students were also assessed as to their choice of performance or learning goals; effort or ability attributions for success; and the fixed or flexible nature of intelligence. The results of these investigations were then compared with the expectations of their teachers and their academic performance in recent examinations. None of the factors were found to yield consistent correlation with either expectations or academic achievements. Both high achievers and underachievers were found at all measures of all variables. In part two, a phenomenographic enquiry was undertaken by interview, to investigate the students' reactions to the twin phenomena of success and failure. LOC, LH and resilience/vulnerability were controlled for in this part of the study and the sample group chosen for interview (10 students) included both high achievers and underachievers. Analysis of the interview transcripts revealed one characteristic which consistently differentiated between the underachievers and the high achievers. This was the reaction to failure. Consistently across the sample, irrespective of their LOC, LH and resilience orientations, the students achieving at the highest level were found to display an efficacious, learn-from-mistakes attitude to failure and the underachieving students displayed unhelpful reactions to failure ranging from denial to avoidance to helplessness. The terms failing well and failing badly were used to describe these two clusters of reactions. Learning to fail well, is proposed as one mechanism to help gifted underachievers improve their academic performance. This study adds to existing understandings in that its findings are contrary to much published literature and its conclusions appears to provide a new perspective on the characteristics of the gifted underachiever

Reflections on Inclusion: Integrating the Disabled Self

In the following essay, I explain how my experience as an included student with cerebral palsy influenced my identity as an individual with disabilities. I also outline how my discovery of disability studies has influenced my role as a teacher, educator, and researcher in special education

CO-OPERATING TO COMPETE IN HIGH VELOCITY GLOBAL MARKETS: THE STRATEGIC ROLE OF FLEXIBLE SUPPLY CHAIN ARCHITECTURES

Continued value creation is paramount for the survival of firms competing in today's high velocity global business environment. This paper presents a conceptual framework for understanding how firms can create and capture value within a highly volatile and uncertain business environment by exploiting both performance gaps and opportunity gaps through the development and use of flexible supply chain architectures. The choice of flexible organizational architecture allows for the continued reconfiguration of the independent modular components of the supply chain so as to achieve optimal leverage of both the firms core competencies as well as their collaborative partners complementary resources. The case of Cellars of Canterbury, a New Zealand based International wine marketing and distribution cooperative enterprise provides empirical support.Industrial Organization, International Relations/Trade,

CO-OPERATING TO COMPETE IN HIGH VELOCITY GLOBAL MARKETS: THE STRATEGIC ROLE OF FLEXIBLE SUPPLY CHAIN ARCHITECTURES

Continued value creation is paramount for the survival of firms competing in today's high velocity global business environment. This paper presents a conceptual framework for understanding how firms can create and capture value within a highly volatile and uncertain business environment by exploiting both performance gaps and opportunity gaps through the development and use of flexible supply chain architectures. The choice of flexible organizational architecture allows for the continued reconfiguration of the independent modular components of the supply chain so as to achieve optimal leverage of both the firms core competencies as well as their collaborative partners complementary resources. The case of "Cellars of Canterbury," a New Zealand based International wine marketing and distribution cooperative enterprise provides empirical support. Keywords: value creation, flexible supply chain architectures, leverage, core competencies.value creation, flexible supply chain architectures, leverage, core competencies., Industrial Organization, Marketing,

Development of an L-, C-, and X-band radar for backscattering studies over vegetation

With the recent surge of interest in global change, the impact of different ecosystems on the Earth's carbon budget has become the focus of many scientific studies. Studies have been launched by NASA and other agencies to address this issue. One such study is the Boreal Ecosystem-Atmosphere Study (BOREAS). BOREAS focuses on the boreal ecosystem in Northern Canada. As a part of the BOREAS study, we have developed a helicopter-borne three-band radar system for measuring the scattering coefficient of various stands within the boreal forest. During the summer of 1994 the radar was used at the southern study area (SSA) in Saskatchewan over the young jack pine (YJP), old jack pine (OJP), old black spruce (OBS) and old aspen (OA) sites. The data collected will be used to study the interaction of microwaves with forest canopy. By making use of three different frequency bands the contribution to the backscatter from each of the layers within the canopy can be determined. Using the knowledge gained from these studies, we will develop algorithms to enable more accurate interpretation of SAR images of the boreal region. This report describes in detail the development of the L-, C- and X-band radar system. The first section provides background information and explains the objectives of the boreal forest experiment. The second section describes the design and implementation of the radar system. All of the subsystems of the radar are explained in this section. Next, problems that were encountered during system testing and the summer experiments are discussed. System performance and results are then presented followed by a section on conclusions and further work

The optometric control of myopia

A doctoral dissertation reviewing the current literature concerning the classification, etiology, and treatment of myopia. Five etiological theories are discussed, they include; genetic theory, normal biological variation theory, conditions of use theory, holistic theory, and deprivational theory. Treatment options were classified as being structural or functional in theory. Structural treatment options reviewed include; concave lens prescription, medical treatment, orthokeratology, and refractive surgery. Functional treatment options reviewed include; nearpoint lens prescription, vision therapy, holistic therapy, and biofeedback & visual acuity training. An integrative I holistic treatment model drawing from various treatment theories was developed as a means to better control myopia through the use of all treatment options available to the optometrist. The dissertation concludes that the optometric profession should look beyond the one dimensional treatment strategy of prescribing concave compensatory lenses when treating myopia. More emphasis needs to be given to preventative vision care, and control of myopic progression. Further clinical research investigating the efficacy of such a treatment plan is needed