Perfect presence: What does this mean for the design of virtual learning environments?

One of the advantages of building a virtual reality system is that it allows students to enter new worlds which in these instances include trips to the bottom of the Atlantic Ocean, a field visit to an Oak Wood and a close encounter in a 3D maze. In all these environments the factors affecting a sense of being there or presence was investigated. Enhanced audio feedback increased a subjective sense of presence but did not increase students' conceptual learning scores. We have also found that a sense of social presence enhanced the notion of being there together with measures of collaboration. However being there can take its toll on students and our findings suggest it imposes a cognitive overload. Where students have a choice, they try and reduce this overload by asking for conceptual tools to assist them in their learning tasks. The studies reported in this paper provide some benchmark data about these issues which deserve further investigation if we are to design effective virtual environments for conceptual learning.     

Implications of the International Counseling Experiences of Pioneering U.S. Professionals: Considered from an Ecological Perspective

The overall goal of the paper is to illuminate some of the substantial challenges, joys, issues and lessons involved with international counseling and to lend impetus to advancing its progress by embracing globally-relevant cultural principles. Five U.S. counseling professionals with extensive international experience recount aspects of their scholarship, teaching, research and service in that domain. The meaning of such experiences was analyzed from an ecological perspective. The analysis was then critiqued for its primary assertions and implications for the internationalization of counseling by two independent professional counseling commentators, both of whom have logged considerable life and work experience around the world.     

Distinctive 16 PF Personality Traits of Librarians

ABSTRACT

While there is a fairly extensive literature on core competencies of librarians, there is a paucity of research on personality traits that distinguish them from those in other occupations. The present study compared the personality traits of 88 librarians with a general norm group using the 16 PF, a widely researched normal-personality inventory. We found that librarians are more apprehensive, cautious, flexible, focused, imaginative, open-minded, respectful, self-reliant, serious, tender-minded, and trusting as well as higher on general reasoning skills than those in the norm group. Findings are discussed in terms of consistency with core competences of librarians. Practical implications were noted, including recruitment and coaching of job incumbents.     

Research summaries for normal birth

In this column, the author summarizes four research studies that further support the benefits of normal birth. The topics of the studies address the positive influence of vaginal birth and breastfeeding on newborns' immune systems; perineal management techniques that may reduce genital tract trauma at birth; predictive factors of the cesarean-surgery rate among low-risk, nulliparous women; and the important role of breastfeeding in alleviating pain among newborns undergoing painful procedures.     

Leg preference and interlateral asymmetry of balance stability in soccer players

To examine the effect of long lasting practice on pedal behavior in sport, we compared experienced adult soccer players and nonsoccer players on leg preference in motor tasks requiring general mobilization, soccer related mobilization, and body balance stabilization. We also evaluated performance asymmetry between the right and left legs in static and dynamic unipedal body balance, based on center of pressure displacement, and correlated that with leg preference in balance stabilization tasks. Results revealed (a) a distinct leg preference between mobilization and stabilization tasks, which were significantly different between players and nonplayers, (b) similar balance stability between the right and left legs, (c) greater stability of experienced players compared with nonplayers in static and dynamic balance, and (d) absence of a significant leg preference correlation with interlateral balance asymmetry. These results suggest an effect of extensive soccer skill practice on establishing leg preference for specific mobilization tasks and overall balance control.     

Collaborative knowledge construction in digital environments: Politics, policy, and communities

How individuals share information with respect to politics and policy in networked research environments is an area ripe for interdisciplinary study. In this analysis, I explore some of the more current and salient research findings from several disciplinary literatures (communications, computer science, organizational behavior, information science, and public policy) to examine how current research perceives the influence of technology-aided communications on policy-making conversations. I suggest that a community-centric view, which takes into account online and offline group affiliations and their related power dynamics, is just as important as an individual-based unit of analysis. This understanding points to directions for the thoughtful creation of digital resources that appropriately reflect and support inter- and intra-group knowledge-sharing behavior.     

Map Room to Data and GIS Services: Five University Libraries Evolving to Meet Campus Needs and Changing Technologies

Programs for geospatial support at academic libraries have evolved over the past decade in response to changing campus needs and developing technologies. Geospatial applications have matured tremendously in this time, emerging from specialty tools to become broadly used across numerous disciplines. At many universities, the library has served as a central resource allowing students and faculty across academic departments access to GIS resources. Today, as many academic libraries evaluate their spaces and services, GIS and data services are central in discussions on how to further engage with patrons and meet increasingly diverse researcher needs. As library programs evolve to support increasingly technical data and GIS needs, many universities are faced with similar challenges and opportunities. To explore these themes, data and GIS services librarians and GIS specialists from five universities—the University of North Carolina at Chapel Hill, Texas A&M, New York University, North Carolina State University, and California Polytechnic State University—with different models of library geospatial and data support, describe their programs to help identify common services, as well as unique challenges, opportunities, and future plans.     

ANNUAL INDEX Volume 71 Fall 2002-Summer 2003

In this study, the authors aimed to examine 8 of the different methods for computing confidence intervals around alpha that have been proposed to determine which of these, if any, is the most accurate and precise. Monte Carlo methods were used to simulate samples under known and controlled population conditions wherein the underlying item distribution is nonnormal and when the items’ responses are those of rating scales rather than dichotomous items. Overall, one can conclude that, despite concerns expressed over the use of Fisher's method for coefficient alpha, in general, it actually outperformed the other methods. Larger sample sizes and larger coefficient alphas also resulted in better band coverage, whereas smaller number of items resulted in poorer band coverage.     

Teacher reflections on ‘bumpy moments’ in teaching: a self‐study

This study recounts a practicing teacher's attempt to describe reflections during the course of teaching at the primary level. A self‐study was conducted to address teacher thinking during ‘bumpy moments’ in teaching, offering an insight into how we might capture the details of teachers' unseen reflections. Through an analysis of the many ‘bumpy moments’ in teaching, several important findings emerged about the nature of reflection and how reflection actually occurs in the classroom context. Results of this study have implications for future research, teacher education and improvement of the teaching practice.     

Evaluating subtopic retrieval methods: Clustering versus diversification of search results

To address the inability of current ranking systems to support subtopic retrieval, two main post-processing techniques of search results have been investigated: clustering and diversification. In this paper we present a comparative study of their performance, using a set of complementary evaluation measures that can be applied to both partitions and ranked lists, and two specialized test collections focusing on broad and ambiguous queries, respectively. The main finding of our experiments is that diversification of top hits is more useful for quick coverage of distinct subtopics whereas clustering is better for full retrieval of single subtopics, with a better balance in performance achieved through generating multiple subsets of diverse search results. We also found that there is little scope for improvement over the search engine baseline unless we are interested in strict full-subtopic retrieval, and that search results clustering methods do not perform well on queries with low divergence subtopics, mainly due to the difficulty of generating discriminative cluster labels.