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Article
Publication date: 15 June 2010

James M. Gibert, Eric M. Austin and Georges Fadel

The purpose of this paper is to focus on the changing dynamics of the ultrasonic consolidation (UC) process due to changes in substrate geometry. Past research points to a…

Abstract

Purpose

The purpose of this paper is to focus on the changing dynamics of the ultrasonic consolidation (UC) process due to changes in substrate geometry. Past research points to a limiting height to width ranging from 0.7 to 1.2 on build features.

Design/methodology/approach

Resonances of a build feature due to a change in geometry are examined and then a simple non‐linear dynamic model of the UC process is constructed that examines how the geometry change may influence the overall dynamics of the process. This simple model is used to provide estimates of how substrate geometry affects the differential motion at the bonding interface and the amount of energy emitted by friction change due to build height. The trends of changes in natural frequency, differential motion, and frictional energy are compared to experimental limits on build height.

Findings

The paper shows that, at the nominal build, dimensions of the feature the excitation caused by the UC approach two resonances in the feature. In addition trends in regions of changes of differential motion, force of friction, and frictional energy follow the experimental limit on build height.

Originality/value

This paper explores several aspects of the UC process not currently found in the current literature: examining the modal properties of build features, and a lumped parameter dynamic model to account for the changes in of the substrate geometry.

Details

Rapid Prototyping Journal, vol. 16 no. 4
Type: Research Article
ISSN: 1355-2546

Keywords

Article
Publication date: 1 January 1994

Susan Voge

Requests for tests and measuring instruments for use in class assignments and faculty and student research are both familiar and frustrating to most academic librarians. In…

Abstract

Requests for tests and measuring instruments for use in class assignments and faculty and student research are both familiar and frustrating to most academic librarians. In typical scenarios, an education student wants to measure aggression in children or a nursing student needs a test for patient mobility. Even the faculty member who may know the name of a scale may not know its author or how to obtain a copy. All are looking for a measure applicable to a specific situation and each has come to the library in hopes of walking away with a copy of the measure that day. Those familiar with measurement literature know that accessing measures can be time consuming, circuitous, and sometimes impossible. The standard test reference books, such as the Mental Measurements Yearbook and Tests in Print (both of which are published by the Buros Institute, University of Nebraska, Lincoln, Nebraska), are of limited use. These books typically do not include actual instruments or noncommercial tests from the journal and report literature. While these standard reference books are essential to a test literature collection, sole use of them would mean bypassing large numbers of instruments developed and published only in articles, reports, papers, and dissertations. Sources are available to locate additional measurements, tests, and instruments, but they are widely dispersed in the print and electronic literature.

Details

Reference Services Review, vol. 22 no. 1
Type: Research Article
ISSN: 0090-7324

Book part
Publication date: 5 October 2015

Amy P. Lippa, Linda C. Lee, Meghan D. Lehr, Daniel D. Spikes, Leslie A. Coward, Bradley W. Davis, Mark A. Gooden and Dorothy R. Hall

As a team of eight scholars at the University of Texas, we collaborate to research issues that directly focus on the development, training, and experiences of anti-racist and…

Abstract

As a team of eight scholars at the University of Texas, we collaborate to research issues that directly focus on the development, training, and experiences of anti-racist and social justice leaders in urban secondary schools. Each of us considered a personal event, or series of events, that significantly influenced our thinking about social justice. We share experiences of personal and institutional racism, and reflect on how these experiences continue to shape our awareness of race. Our perspectives capture how issues of race and racial discrimination persist in a status quo educational system and how past experiences directly influence our work.

Details

Living the Work: Promoting Social Justice and Equity Work in Schools around the World
Type: Book
ISBN: 978-1-78441-127-5

Keywords

Article
Publication date: 1 April 1989

Bonnie G. Gratch

More than five years have passed since A Nation at Risk was published in 1983 by then‐Secretary of Education Terrance Bell's National Commission on Excellence in Education. Those…

Abstract

More than five years have passed since A Nation at Risk was published in 1983 by then‐Secretary of Education Terrance Bell's National Commission on Excellence in Education. Those years have seen the publication of an enormous body of both primary material, composed of research reports, essays, and federal and state reform proposals and reports; and secondary material, composed of summaries and reviews of the original reform reports and reports about effective programs that are based on reform recommendations. This annotated bibliography seeks to identify, briefly describe, and organize in a useful manner those publications dealing with K‐12 education reform and improvement. The overall purposes of this article are to bring organization to that list, and also to trace relationships and influences from the federal initiatives to the states and professional associations, and from there to the school districts and individual schools.

Details

Reference Services Review, vol. 17 no. 4
Type: Research Article
ISSN: 0090-7324

Book part
Publication date: 21 May 2019

John N. Moye

Abstract

Details

Learning Differentiated Curriculum Design in Higher Education
Type: Book
ISBN: 978-1-83867-117-4

Article
Publication date: 1 March 1987

The Texas State Law Library has set up its own “information utility,” consisting of electronic mail, conferences and online text data search and retrieval. The library is using…

Abstract

The Texas State Law Library has set up its own “information utility,” consisting of electronic mail, conferences and online text data search and retrieval. The library is using prototype FYI‐MCD (mail/conference/data retrieval) software donated by FYI, Inc. of Austin. FYI‐MCD is running on an MS‐DOS computer with a 20‐megabyte hard disk.

Details

M300 and PC Report, vol. 4 no. 3
Type: Research Article
ISSN: 0743-7633

Article
Publication date: 1 February 1982

Hannelore B. Rader

The following annotated bibliography of materials on orienting users to libraries and on instructing them in the use of reference and other resources covers publications from…

Abstract

The following annotated bibliography of materials on orienting users to libraries and on instructing them in the use of reference and other resources covers publications from 1981. A few items from 1980 have been included because information about them was not available in time for the 1980 listing. A few items have not been annotated because the compiler was unable to secure copies of these items.

Details

Reference Services Review, vol. 10 no. 2
Type: Research Article
ISSN: 0090-7324

Article
Publication date: 1 January 1979

Hannelore B. Rader

The following is an annotated bibliography of materials published in 1978 on orienting users to the library and on instructing them in the use of reference and other resources. A…

Abstract

The following is an annotated bibliography of materials published in 1978 on orienting users to the library and on instructing them in the use of reference and other resources. A few entries have a 1977 publication date and are included because information about them was not available in time for the 1977 review. Also some entries are not annotated because the compiler was unable to secure a copy of the information.

Details

Reference Services Review, vol. 7 no. 1
Type: Research Article
ISSN: 0090-7324

Article
Publication date: 1 January 1990

BARBARA B. ALEXANDER and BILL PAGE

The Sterling C. Evans Library, Texas A & M University, holds over 3,000,000 microforms. As many of the Evans microform collections are not catalogued, access to them can be…

Abstract

The Sterling C. Evans Library, Texas A & M University, holds over 3,000,000 microforms. As many of the Evans microform collections are not catalogued, access to them can be perplexing to patrons. To ease that problem, the microtext staff created Guide to the Microform Collections in the Sterling C. Evans Library, which describes the microform materials currently housed in six different departments of the Library. Entries are arranged alphabetically by title and are identified by format. The Guide allows patrons to examine a scope note for each set, to discover indexes which enable efficient use of various sets, and to search for microform materials by subject. Call numbers for microform materials, locations, indexes with appropriate call numbers, and subject headings are integral parts of each listing. In addition to describing the current collection, the Guide provides an effective means of assessing collection strengths or weaknesses. The article presents information on selecting materials for inclusion in the Guide, content and form of entries, and updating the guide.

Details

Journal of Documentation, vol. 46 no. 1
Type: Research Article
ISSN: 0022-0418

Article
Publication date: 1 February 1985

IThe activity of the group has continued to progress with great energy and enthusiasm for practical applications of the theoretical ideas and schemes of the members, many of whom…

Abstract

IThe activity of the group has continued to progress with great energy and enthusiasm for practical applications of the theoretical ideas and schemes of the members, many of whom have acted as consultants to private, government and international institutions. Some of the longer‐serving members retired, but continued to attend meetings. The Group heard with great regret of the death of Mr B. I. Palmer, its Founder Chairman. An important element in the discussions from its beginning was the theoretical scheme of S. R. Ranganathan, and this was largely due to Palmer, who had returned from war service in India fired with enthusiasm for Ranganathan's ideas, and determined to interest others in developing and applying them. His collaboration with Mr A. J. Wells, another founder member, had as an early result their little monograph, The fundamentals of library classification, which has greatly influenced both teaching and practice of classification, and not only in Britain.

Details

Journal of Documentation, vol. 41 no. 2
Type: Research Article
ISSN: 0022-0418

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