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The purpose of this paper is to form high density interconnection (HDI) of backboard for press-fit applications with the pre-curing conditions of conductive paste. The best condition of pre-curing conductive paste should be found to obtain good electrical and physical performance of the conductive paste and avoid the simultaneous curing behavior of prepreg.

A novel structure of backboard was designed by using the connection of conductive paste-filled through holes to connect two multilayers. Pre-curing conditions of conductive paste were investigated to find their effects on resistance, bond strength and volume shrinkage. The reliability of pre-curing conductive paste was also analyzed.

Pre-curing conditions led to a great influence on the resistance, bond strength and volume shrinkage of the conductive paste. The best condition of pre-curing conductive paste was chosen as the low curing temperature of 60°C and a curing time of 30 min. Cured conductive paste exhibited square resistance of 4.205 mΩ/□ and bonding strength of 22.86 N. The as-obtained pre-curing condition could improve the reliability of conductive paste. Pre-curing process of conductive paste at extremely low temperature to interconnect two multilayer structures improved the density interconnection of backboard for press-fit applications.

The use of HDI of backboard could lead to good assembly for high-speed signal transmission of electronic products with press-fitting components. The connection of pre-curing conductive paste for multilayers could have important function for improving the application for communication backboard.

Sports and physical activity are widely recommended, both as guidelines and in clinical practice, because of their broad range of positive effects on health, depression, anxiety, and psychological well-being. While several studies have examined the anti-depressive and anxiolytic effects of physical activity in clinical populations, and fewer studies have focused on the nonclinical populations, the relationship between tennis and well-being has not been clearly investigated. This study was carried out with 76 student volunteers from Kocaeli University (Turkey) who had chosen tennis lessons as their University. The tennis exercise program consisted of 90-minute basic tennis skills lessons for 13 weeks. At the beginning and at the end of the study, the students were given the Symptom Checklist-90-Revised (SCL-90-R), the Beck Anxiety Inventory (BAI), and the Beck Depression Inventory (BDI) scales, and were evaluated by the DeWitt-Dugan Tennis Service Test, the DeWitt-Dugan Speed Test, and the Dyer Backboard Tennis Test. Upon evaluating the students' pre- and post-test scores, we concluded that their BDI and BAI scores had significantly decreased, with the most significant decreases seen in several sub-scores of the SCL-90-R; their tennis skills, meanwhile, increased significantly. This study shows that partaking in tennis exercise once a week decreases depression and anxiety symptoms and enhances well-being in healthy young people.

This paper aims to describe the work of a group of seventh-grade boys in a middle school superhero storytelling project. In this project, the boys, one of whom identified as Latino and five of whom identified as Black, created a voiceless, faceless, raceless superhero named “Mute.” Using a Black feminist theoretical framework, the author considers how the boys authored embodied moments in the construction of their character and in a basketball scene. The author argues that within the narrated space of the story, embodiment functioned as a critical tool for authoring spaces that thwarted and bypassed dominant social narratives.

The white, female, university-affiliated author was a participant-researcher in the “Mute” group’s ten storytelling sessions. The ethnographic data set collected included fieldnotes, recordings and copies of all the writing and images of the group. The author uses this data to conduct a narrative analysis of the Mute story.

The author suggests that the group’s authoring of embodiment and choreography in their story makes space outside of the binary stances often available in traditional critical analyses. Instead, the group’s attention to embodied aspects of their character(s) allowed them to refuse either/or positions of such stances and construct a textured reality that existed beyond these bounds.

Black feminist theorists have warned that critical readings are potentially essentializing, risking a reification of the same systems they hope to overturn. The Mute group’s invention of a superhero character and their use of authored embodiment deflected such essentializing readings to imagine a new, more just (story) world. Thus, the author recommends an increased attention to how students are writing and reading embodiment to fully see the everyday ways they are critically working both against and beyond the social narratives that organize their lives.

AFTER some unsuccessful negotiations during the period when the first full‐time schools of librarianship were being established, the Birmingham School was founded in the autumn of 1950. Circumstances were not entirely favourable—the immediate post‐war generation of enthusiastic ex‐service students had already passed through other schools; the accommodation available was indifferent; the administrative support was bad; resources were weak, both in books and in equipment. There was, more importantly, a strong local tradition of part‐time classes in librarianship and little or no conviction that full‐time study was necessary or desirable.

The chairman and CEO of the Huffy Corporation outlines his strategy for diversifying the company while battling imports in the highly competitive bicycle business.

The teaching of structural theory lends itself very readily to the use of demonstration models. Generally speaking, no special services such as water, electricity or gas are required so the production of the models need not be over‐complicated. By using such materials as flexible steel strip, deflections and rotations can be magnified onsiderably compared with those found on practice, and even a wooden rule can be used to illustrate characteristic types of bending. In spite of these possibilities the subject of structures has not outgrown its earlier mathematical beginnings. Even the advent of Professor Pippard's book ‘The Experimental Study of Structures’ has not led external examining bodies to demand experimental course work, in addition to graphical and design work.

The computerised acquisition/cataloguing system, in which input is from MARC tapes and via on‐line visual display units, is described. Choice of input method, contents and interrelationships of machine‐readable files, processing of MARC tapes, and COM catalogue production are discussed, and the proposed integration of the computer‐based issue system is described.

The purpose of this paper is to present a method and a system for measuring drill bit temperature on‐line in the micro drilling process and to characterize drilling processes via drill bit temperature.

The drill bit temperature measurement system was first established by the utilization of an infrared camera. Then the drill bit temperature in a drilling cycle was characterized. The temperatures of an ultra‐small micro drill bit and a coated drill bit were measured and compared.

The temperature of an ultra‐small drill bit can be measured on‐line via the proposed temperature measurement system. The drilling process can be characterized by the drill bit temperature. The drill bit temperature decreased when a coated drill bit was used.

The paper highlights key points for measuring the drill bit temperature on‐line by an infrared camera and characterizes PCB drilling processes by measuring the drill bit temperature.

According to the high‐reliability requirement and especial structure of triple modular redundancy (TMR) emergent trip multi‐machine system, the purpose of this paper is to introduce a highly effective invalidation detecting mechanism based on heartbeat mechanism.

The structure of TMR system is designed to be multi‐master and multi‐save. According to the multi‐machine environment, an invalidation detecting mechanism is designed. Considering the advantage and weakness of the traditional PULL and PUSH heartbeat model, the mechanism combines PUSH model with PULL model. To further enhance real‐time ability and reliability of the invalidation detecting mechanism, hierarchy heartbeat monitor and integrating the heartbeat message into data transmission are designed in the mechanism.

The invalidation detecting mechanism combines PUSH with PULL heartbeat monitor model can enhance reliability and decrease the system misdiagnosis rate greatly. By adapting hierarchy heartbeat mechanism and integrating the heartbeat detecting message into the data transmission, the system communication cost is decreased and the input‐to‐output response time is shortened. The effectiveness and reliability of this mechanism are proved by system field commissioning and MATLAB simulation.

Using a new heartbeat invalidation detecting mechanism, this paper provides a new way of fault diagnosis of TMR multi‐machine system.