Electroplating for high aspect ratio vias in PCB manufacturing： enhancement capabilities of acoustic streaming

This paper considers the copper electrodeposit ion processes in microvias and investigates whether the quality of the electroplating process can be improved by acoustic streaming using megasonic transducers placed into a plating cell. The theoretical results show that acoustic streaming does not take place within the micro-via （either through or blind-via＇ s）, however it does help improve cupric ion transport in the area close to the mouth of a via. This replenishment of cupric ions at the mouth of micro-via leads to better quality filling of the micro-via through diffusion compared to basic conditions. Experiments showing the improved quality of the filling of vias are also presented.     

UNESCO Training-the-Trainers “Information Literacy Workshop,Montego Bay,Jamaica, June 1–6, 2008”

This is a brief report highlighting the key elements of an information literacy training workshop jointly organized by UNESCO and the University of the West Indies in Montego Bay, June 1–6, 2008, providing information giving the background of why the workshop was mounted and what the expected results and outcomes were, how it was organized and structured, including the programme/agenda, who the expert-presenters were, a list of participants, and some conclusions, and some recommendations.     

Balancing Head and Heart: The Importance of Relational Accountability in Community-University Partnerships

In this article we introduce a “head and heart” approach to community-engaged scholarship. Through the literatures of Aboriginal scholarship and engaged scholarship we reflect on a community-university research and program development project undertaken in response to health and education concerns of Aboriginal people in Canada. We suggest that the head and heart approach was crucial to the program’s success and provides access to an ethical space where multiple worldviews are recognized and where the importance of relational accountability becomes evident. We then examine the implications of this approach for engaged scholarship and higher education practices.     

The home front: citizens behind the camera

In the context of intense debate over immigration into the United States, the television show Border Wars offers a distinctive way for anxious citizens to participate in reinforcing the border. In the program, viewers are invited to share the lines of site of Customs and Border Patrol (CBP) agents as they conduct surveillance of unauthorized border crossers. Because Latino bodies are repeatedly displayed as the subjects of surveillance, the positions of viewer/citizen and viewed-non-citizen encourage racial alignments with the border. In the face of these alignments, the Latino CBP agents are made readable as bodies in transition toward citizenship due to their performance of surveillance practices against other Latinos. The article comments on the soldier citizen as positioned at the panoptic center of watching without being watched, which is less available to Latinos because their bodies circulate as signs of suspicion, which casts them disproportionately onto the surveillance screen. Practices of surveillance should be understood as performances because they reaffirm Americans of their citizenship status at a time of heightened paranoia over the loss of a stable identity.     

Can imagery training help children who have comprehension problems?

An experiment is reported that explored whether training in mental imagery would improve text comprehension in 9-year-old children. Two groups of children were compared: good and poor comprehenders. The groups were matched on a test of vocabulary and decoding, but differed on a comprehension test. The results showed that a three-session programme of training in imagery benefited the poor, but not the good, comprehenders, by comparison with a control group who merely answered questions about the same passages. The results are discussed in relation to possible causes of children's comprehension difficulties.     

Notes on Contributors

Place is material, conceptual and symbolic. Physically, the Library at Townsville College of Advanced Education was central, visible and distinctive. Internally, it provided a dramatically different environment from other college buildings. It functioned as the (metaphorical) ‘hub’ of the external studies programme and, when the college was under threat, it formed a symbolic rallying point.     

Modeling Collaboration for Middle-Level Teacher Candidates Through Co-Teaching

The purpose of this analysis was to determine if the implementation of co-teaching was an effective instructional practice for graduate-level teacher candidates (hence forth referred to as candidates) in a Middle Childhood Education cohort. The goals were to determine (1) if co-teaching promoted candidate learning and (2) if co-teaching provided effective modeling for the candidates so they would be able to utilize it in their own future classrooms. Both quantitative and qualitative data were analyzed from course evaluations and pre- and post-surveys. Results indicated that candidates' educational experiences were enhanced as a result of the co-teaching experience, particularly with the use of team teaching, parallel teaching, and station teaching strategies. Additionally, evidence suggests that the use of co-teaching provided effective modeling for the candidates.     

The relationship between bowling action classification and three-dimensional lower trunk motion in fast bowlers in cricket

Abstract

Lower back injuries, specifically lumbar stress fractures, account for the most lost playing time in professional cricket. The aims of this study were to quantify the proportion of lower trunk motion used during the delivery stride of fast bowling and to examine the relationship between the current fast bowling action classification system and potentially injurious kinematics of the lower trunk. Three-dimensional kinematic data were collected from 50 male professional fast bowlers during a standing active range of motion trial and three fast bowling trials. A high percentage of the fast bowlers used a mixed bowling action attributable to having shoulder counter-rotation greater than 30°. The greatest proportion of lower trunk extension (26%), contralateral side-flexion (129%), and ipsilateral rotation (79%) was used during the front foot contact phase of the fast bowling delivery stride. There was no significant difference in the proportions of available lower trunk extension, contralateral side-flexion, and ipsilateral rotation range of motion used during fast bowling by mixed and non-mixed action bowlers. Motion of the lower trunk, particularly side-flexion, during front foot contact, in addition to variables previously known to be related to back injury (e.g. shoulder counter-rotation), should be examined in future cross-sectional and prospective studies examining the fast bowling action and low back injury.