Estimating running spatial and temporal parameters using an inertial sensor

An inertial measurement unit (IMU) is widely considered to be an economical alternative to capture human motion in daily activities. Use of an IMU for clinical study, rehabilitation, and in the design of orthoses and prostheses has increased tremendously. However, its use in defining running gait is limited. This study presents a practical method to estimate running spatial and temporal parameters using an inertial sensor by placing it on a shoe. A combination of a zero-crossing method and thresholding is used to identify foot-strike and foot-off based on foot acceleration during running. Stride time, ground contact time and flight time can then be identified. An off-phase segmentation algorithm is applied to estimate stride length and running speed. These two parameters are commonly used to evaluate running efficiency and to differentiate elite runners. This study found that an IMU can estimate foot-strike and foot-off with average absolute time differences of 2.60–6.04 and 2.61–16.28 ms, respectively. Stride time was estimated with error between ? 4.04 and 0.33 ms. Stride length and running speed were estimated with maximum average errors of 45.97 mm and 0.41 km/h.     

Single-document and multi-document summarization techniques for email threads using sentence compression

We present two approaches to email thread summarization: collective message summarization (CMS) applies a multi-document summarization approach, while individual message summarization (IMS) treats the problem as a sequence of single-document summarization tasks. Both approaches are implemented in our general framework driven by sentence compression. Instead of a purely extractive approach, we employ linguistic and statistical methods to generate multiple compressions, and then select from those candidates to produce a final summary. We demonstrate these ideas on the Enron email collection – a very challenging corpus because of the highly technical language. Experimental results point to two findings: that CMS represents a better approach to email thread summarization, and that current sentence compression techniques do not improve summarization performance in this genre.     

Moving beyond face value: re-envisioning higher education evaluation as a generator of professional knowledge

Conventional student-led evaluation is now an orthodox feature of the North American, UK and Australian higher education landscape. Increasingly, it is guiding major institutional decisions around educational quality, academic promotion and more recently institutional funding by government. Yet significant research around student-led evaluation has demonstrated that this form of student opinion-based evaluation remains highly fragile and susceptible to multiple forms of influence. This paper argues that student-led evaluation of itself is not sufficiently robust to appropriately inform notions of educational quality or pedagogical capability of academics. An alternative approach to evaluation in higher education is proposed, broadly drawing on the conception of fourth generation evaluation. The model foregrounds academic collaboration in shaping a professional evaluative framework at an activity level (i.e. programme or sub-discipline level) based on an ongoing dialogue between peers and with students, as well as qualitative evaluation of student learning. The model attempts to make tensions and conflicts in the teaching and learning context more explicit and the active focus of evaluative efforts to devise appropriate and sustainable responses to improve the quality of learning and professional practice. This paper presents some preliminary research on the effectiveness of this model in its initial piloting in postgraduate programmes in an Australian university.     

An evaluation of a full-time work study program for undergraduates

The present study examined the effects of combining full-time on-the-job learning with full-time course work for a group of 26 students enrolled in the University Year for Action Program. Results indicated that, although students perceived the agency learning environments much more positively than parallel classroom learning environments, participating in the program had relatively little impact on variables such as concept knowledge and moral judgment, which were hypothesized as relevant outcome dimensions. Students' direct evaluations of their year-long experience provided information which has been used in modification of the program.     

College presidents' role performance and faculty satisfaction

This research analyzed faculty evaluations of college presidents' role performance with the intent of identifying underlying dimensions and to ask further which dimensions predicted faculty satisfaction with presidents. Data were gathered from 896 faculty members from two technical colleges, three community colleges, two private universities and three public universities in a Western state. The factor analysis revealed three relatively independent dimensions of the presidential role: personal-public image, faculty and student interaction with presidents, and absence of autocratic leadership style. The personal-public image was the most important dimension and predicted faculty satisfaction across the four types of institutions of higher learning. Faculty-student interaction with the president, while not as important a dimension of the presidential role, predicted faculty satisfaction in three institutional types, but not in public universities. The absence of autocratic leadership style predicted satisfaction in community and technical colleges.     

Adult Tactile Stimulation during Face-to-Face Interactions Modulates Five-Month-Olds'' Affect and Attention

3 studies were designed to investigate infant responses to tactile stimulation during brief adult-infant interaction using a modified still-face (SF) procedure. When adults pose a neutral SF expression, infants decrease gazing and smiling at the adults, and some increase grimacing, relative to normal interaction periods. This SF effect was substantially reduced in Study 1 when mothers or strangers continued to touch infants during the SF period. In Studies 2 and 3, tactile versus visual and active versus passive aspects of adult touch were isolated during different SF periods. Visible, active adult hands unaccompanied by touch elicited infant attention, but not smiling, during the SF period. By contrast, active, not passive, adult touch substantially reduced the SF effect, even when the adult's hands were invisible. In the latter condition, infants continued to gaze and smile at the adult's SF. Thus, adult facial expressions are not the only modulator of infant affect and attention during social exchanges; adult touch appears to play an active role.     

Performance Indicators as a Foundation of Institutional Autonomy: Implications for Higher Education Institutions in Europe

Tertiary Education and Management - There has developed moderate discussion in European higher education about the use of performance indicators for both accountability and evaluation purposes....     

Ranking of rankings: benchmarking twenty-five higher education ranking systems in Europe

The purpose of this study is to evaluate the ranking practices of 25 European higher education ranking systems (HERSs). Ranking practices were assessed with 14 quantitative measures derived from the Berlin Principles on Ranking of Higher Education Institutions (BPs). HERSs were then ranked according to their degree of congruence with the BPs. Additionally, the three domains of methodology, transparency, and consumer-friendliness were proposed to underlie the BPs, and the measures were also applied for assessing HERSs regarding these domains. Results indicate that the cooperating HERSs by CHE (Germany), AQA (Austria) and swissUp (Switzerland) exhibit the highest congruence with the BPs. However, no European HERS demonstrates good overall congruence with the BPs, mainly due to methodological shortcomings. Results further show that HERSs compiled and published by non-profit research entities seem to perform better than the majority of HERSs published by for-profit news outlets. International comparisons indicate that HERSs published in German-speaking countries and the Netherlands tend to exhibit a higher congruence with the BPs. Overall, this study hopes to stimulate the improvement of ranking practices through benchmarking with existing exemplary models. The quantitative assessment tool further promises to be useful in explaining relative stability or change of higher education institutions in HERSs, as well as in helping to explain resource allocation pressures within higher education institutions.     

Visions of International Scientific Cooperation: The Case of Oceanic Science, 1920–1955

This work explores the attitudes of American scientists towardsinternational scientific activity, with particular respect to theoceanic sciences, during the three decades after the First WorldWar. In the mid-1950s, the Eisenhower Administration favouredthe thesis that increased international collaboration wouldstrengthen the Free World, ease Cold War tensions, and promotethe growth of science. This essay analyses elements in thatthesis, namely, scientific chauvinism, humanitarianism, andscientific interdependence. The narrative traces these themesthrough key episodes in the history of international cooperationin oceanic science, revealing how this experience shapedstrategies and expectations for cooperative scientific research.