Experiential learning in doctoral training programmes: fostering personal epistemology through collaboration

There has been increasing recognition for the need to reform doctoral training practices to foster students’ personal epistemology. This study describes the design and evaluation of a learning experience designed to help students understand the scholarly publication process. Firstly, this study discusses the design of the learning experience, describing the collaborative process of writing an interdisciplinary publication using both online and face-to-face learning. Secondly, this study evaluates the effectiveness of the learning experience by examining students’ reflections. We show that participation in the learning experience helped students to develop their academic writing proficiency, collaboration and teamwork, intercultural competence, and ability to engage in reflective practice. Importantly, we show that each student also created more individualised knowledge, gaining insight into how they and others think. This study, therefore, demonstrates that personal epistemology can be fostered through collaboration in a doctoral writing group context.     

The nature and correlates of underachievement among elementary schoolchildren in Hong Kong

This study investigated for the first time several characteristics of underachievement in a large sample of Hong Kong elementary schoolchildren. More males were identified as underachievers than females, but the ratio was substantially less than the two-to-one rate typically found in the American literature. The stability and persistence of underachievement increased during the elementary school years, and the stability of underachievement tended to be higher in subject matter that was relatively more difficult, which varied with gender. Underachievement became more specific to particular academic subjects rather than more general across the elementary grades. Parents and teachers, but not the children themselves, perceived that underachievers were more capable than same-grade nonunderachievers (who score lower on ability tests), although this awareness is more likely directed at male than female underachievers, which has been observed in other samples. In grades 1-4, teachers provided extra mentoring, communications, and support to underachievers. Thereafter, underachievers became more disruptive, impatient, and aggressive in school and perhaps at home. At that point, teachers became less supportive, offered less extra mentoring, and applied greater behavioral control over underachievers. Underachieving children also perceived that their parents became less supportive and used more discipline in grades 5-6 relative to grades 3-4. These correlates of underachievement suggests the existence of a syndrome of underachievement that separates underachievers from children who have the same grades but lower mental ability.     

Dynamics and manipulation of ferroelectric domain walls in bismuth ferrite thin films

Ferroelectric domain walls differ from domains not only in their crystalline and discrete symmetry, but also in their electronic, magnetic, and mechanical properties. Although domain walls provide a degree of freedom to regulate the physical properties at the nanoscale, the relatively lower controllability prevents their practical applications in nano-devices. In this work, with the advantages of 3D domain configuration detection based on piezoresponse force microscopy, we find that the mobility of three types of domain walls (tail-to-tail, head-to-tail, head-to-head) in (001) BiFeO₃ films varies with the applied electrical field. Under low voltages, head-to-tail domain walls are more mobile than other domain walls, while, under high voltages, tail-to-tail domain walls become rather active and possess relatively long average lengths. This is due to the high nucleation energy and relatively low growth energy for charged domain walls. Finally, we demonstrate the manipulation of domain walls through successive electric writings, resulting in well-aligned conduction paths as designed, paving the way for their application in advanced spintronic, memory and communication nano-devices.     

The female athlete triad: components, nutrition issues, and health consequences

This paper, which was part of the International Association of Athletics Federations (IAAF) 2007 Nutritional Consensus Conference, briefly reviews the components of the female athlete triad (Triad): energy availability, menstrual status, and bone health. Each component of the Triad spans a continuum from health to disease, and female athletes can have symptoms related to each component of the Triad to different degrees. Low energy availability is the primary factor that impairs menstrual dysfunction and bone health in the Triad. We discuss nutritional issues associated with the Triad, focusing on intakes of macronutrients needed for good health, and stress fractures, the most common injury associated with the Triad. Finally, we briefly discuss screening and treatment for the Triad and the occurrence of the Triad in men.     

Competition and the decline in Western television program popularity in Indonesia during the 1990s

Despite the country's population base of 240 million, Indonesian television has not been widely explored in academic and professional venues. This paper examines the impact of competition on the popularity of foreign programs in the Indonesian market during the mid-1990s. Analyzing recently released ratings data from a television ratings service, this paper suggests that competition has given rise to the popularity of local programs, while foreign program popularity has declined steeply during the same three year period. The findings also suggest that cultural proximity is a factor of the popularity of programs. By 1997, Asian programs outnumbered Western programs on the top 100 highest rated program lists in Indonesia. We explore implications of study findings for filling this void in the literature.     

Electroosmotic flow hysteresis for dissimilar ionic solutions

Electroosmotic flow (EOF) with two or more fluids is commonly encountered in various microfluidics applications. However, no investigation has hitherto been conducted to investigate the hysteretic or flow direction-dependent behavior during the displacement flow of solutions with dissimilar ionic species. In this investigation, electroosmotic displacement flow involving dissimilar ionic solutions was studied experimentally through a current monitoring method and numerically through finite element simulations. The flow hysteresis can be characterized by the turning and displacement times; turning time refers to the abrupt gradient change of current-time curve while displacement time is the time for one solution to completely displace the other solution. Both experimental and simulation results illustrate that the turning and displacement times for a particular solution pair can be directional-dependent, indicating that the flow conditions in the microchannel are not the same in the two different flow directions. The mechanics of EOF hysteresis was elucidated through the theoretical model which includes the ionic mobility of each species, a major governing parameter. Two distinct mechanics have been identified as the causes for the EOF hysteresis involving dissimilar ionic solutions: the widening/sharpening effect of interfacial region between the two solutions and the difference in ion concentration distributions (and thus average zeta potentials) in different flow directions. The outcome of this investigation contributes to the fundamental understanding of flow behavior in microfluidic systems involving solution pair with dissimilar ionic species.     

Relationship Reciprocation Modulates Resource Allocation in Adolescent Social Networks: Developmental Effects

Adolescence is characterized as a period of social reorientation toward peer relationships, entailing the emergence of sophisticated social abilities. Two studies (Study 1: N = 42, ages 13–17; Study 2: N = 81, ages 13–16) investigated age group differences in the impact of relationship reciprocation within school‐based social networks on an experimental measure of cooperation behavior. Results suggest development between mid‐ and late adolescence in the extent to which reciprocation of social ties predicted resource allocation. With increasing age group, investment decisions increasingly reflected the degree to which peers reciprocated feelings of friendship. This result may reflect social‐cognitive development, which could facilitate the ability to navigate an increasingly complex social world in adolescence and promote positive and enduring relationships into adulthood.     

Profiles of Organizational Culture and Effective Schools∗

This study intends to investigate how school organizational culture is related to important organizational characteristics and observe how the profiles of strong culture‐effective schools are different from those of weak culture‐ineffective schools in terms of organizational variables (such as principal's leadership, organizational structure, and teachers’ social interactions), teachers’ job attitudes, and school effectiveness criteria. It is a cross‐sectional survey research involving 54 randomly sampled Hong Kong secondary schools and 588 teachers. The unit of analysis is the school.

Organizational ideology index was found to be substantially correlated with schools’ perceived organizational effectiveness. Among the 10 measures of these organizational variables, teachers’ esprit and principal's charismatic leadership can contribute substantially to the prediction of school's strength of organizational culture. The organizational profile of perceived strong culture‐effective schools is contrastingly different from that of perceived weak culture‐ineffective schools. The findings suggest that difference in organizational culture can be reflected at least in three overt levels: 1. organizational level in terms of principal's leadership behaviors, organizational formalization and participation, and teachers’ social norms; 2. teachers’ attitudinal level in terms of organizational commitment, social job satisfaction, intrinsic job satisfaction, and influence job satisfaction; and 3. school effectiveness level in terms of perceived overall organizational effectiveness and academic achievements in public examinations.

The findings reinforce the importance of organizational culture to the ongoing effort and discussion of school improvement and school effectiveness.

     

Utilization of online educational resources in teaching: A moderated mediation perspective

The study builds on a newly modified Technology Acceptance Model (TAM) to substantiate the motivation and operation of teachers’ utilization of online learning resources. A ‘Comprehensiveness’ construct is proposed in the modified TAM to reflect the breadth and depth of rich online knowledge. This new construct serves as the mediator between ‘Usefulness’ and ‘Behavioral Intention’ in the new TAM structure. In addition, the ‘Ease of Use’ factor in conventional TAM is proposed to moderate the mediation in the modified TAM. Survey data are collected from 301 teachers undertaking certified training in Macau and Structural Equation Model (SEM) technique is used to assess the model. Moderated mediation is evaluated using both multi-group bootstrapping method and moderated path analysis method. Both methods verify the presence of moderated mediation with partial mediation in high Ease of Use values and full mediation in low Ease of Use values. Theoretical implication of the current study extends the coverage of TAM applications and academic implication suggests the strengthening in teachers’ professional development and government sponsorship in building repositories of online resources.     

Student learning performance in online collaborative learning

Education and Information Technologies - Online collaborative learning (OCL) has received significant attention, but the ultimate goal of adopting OCL is neglected, especially in higher education...