• Title/Summary/Keyword: DSpace

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θz Stage Design and Control Evaluation for Wafer Hybrid Bonding Precision Alignment (Wafer Hybrid Bonding 정밀 정렬을 위한 θz 스테이지 설계 및 제어평가)

  • Mun, Jea Wook;Kim, Tae Ho;Jeong, Yeong Jin;Lee, Hak Jun
    • Journal of the Semiconductor & Display Technology
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    • v.20 no.4
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    • pp.119-124
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    • 2021
  • In a situation where Moore's law, which states that the performance of semiconductor integrated circuits doubles every two years, is showing a limit from a certain point, and it is difficult to increase the performance due to the limitations of exposure technology.In this study, a wafer hybrid method that can increase the degree of integration Various research on bonding technology is currently in progress. In this study, in order to achieve rotational precision between wafers in wafer hybrid bonding technology, modeling of θz alignment stage and VCM actuator modeling used for rotational alignment, magnetic field analysis and desgin, control, and evaluation are performed. The system of this study was controlled by VCM actuator, capactive sensor, and dspace, and the working range was ±7200 arcsec, and the in-position and resoultion were ±0.01 arcsec. The results of this study confirmed that safety and precise control are possible, and it is expected to be applied to the process to increase the integration.

An Evaluation of Academic Institutional Repositories in Ghana

  • Kumah, Mariyama Abdulai;Filson, Christopher Kwame
    • International Journal of Knowledge Content Development & Technology
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    • v.12 no.1
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    • pp.67-83
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    • 2022
  • This study aims to evaluate some academic institutional repositories (IRs) in Ghana. Data were collected using observation and interview methods by examining the various websites of seven (7) selected academic institutional repositories in Ghana. The findings revealed that the University of Ghana, Legon, leads records count of the seven Institutional Repository (IRs) examined. Dspace was the prioritized software for managing and preserving the digital contents of these IRs. Theses, dissertations and research articles were the leading contents deposited on the IRs. The majority of the IRs have incorporated RSS (Rich Site Summary or Really Simple Syndication) feeds on their IRs with few using other Web 2.0 features. English was the only interface language used on all the IRs. From the interview, the findings revealed that most of the faculty members did not use the IR very often and 9(42.9) also indicated that, they have never deposited their materials on the IR. Faculty members again indicated that, inadequate ICT connectivity and infrastructure, unreliable power supply, Copyrights and intellectual rights, financial constrain, inadequate advocacy and training on the importance of IRs to faculty and users were the major challenges of academic libraries in operating IRs in Ghana.

Electronic Theses and Dissertations' Development in University Libraries in Nigeria

  • Jerry Eyerinmene Friday;Constance Timi-pere Afamukoro
    • International Journal of Knowledge Content Development & Technology
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    • v.14 no.1
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    • pp.75-110
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    • 2024
  • The study was meant to examine electronic theses and dissertations' development in Nigerian federal university libraries. The study adopted descriptive survey research design. The study population comprised forty-eight institutional repository librarians in eighteen Nigerian federal university libraries. The sample consisted of forty three librarians. A questionnaire was used for data collection. The data collected were analyzed with mean and standard deviation. Findings reveal that the policies available for developing electronic theses and dissertations (ETDs) in the libraries require submission of electronic copies of theses and dissertations by students, participation of digital/IR librarians in ETD development and provision of free access to ETDs; the libraries comply with standards of Open Archives Initiative Protocol for Metadata Harvesting and Search/Retrieval via URL using DSpace for building ETDs and taking advantage of such available ICT facilities as computers, scanners, CD-ROM, LAN, internet connectivity and printer. The libraries achieve ETD through digitisation, mandating submission of electronic versions of TDs by students and creation of IR. However, the process is hindered by technological obsolescence, financial problems, absence of clearly-defined ETD development policy, required ICT facilities and trained staff, copyright, irregular power supply and unstable internet connectivity. This study represents a fresh empirical investigation into electronic theses and dissertations' development in federal university libraries in Nigeria.

A Study on Developing a Name Access Point Control System to Improve the Performance of Information Retrieval from Institutional Repositories (기관 리포지터리의 검색기능 향상을 위한 인명 접근점제어 시스템 구축 연구)

  • Kim, Mi-Hyang;Kim, Tae-Soo
    • Journal of the Korean Society for information Management
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    • v.27 no.3
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    • pp.125-146
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    • 2010
  • This study developed a name access point control system for better performance of information retrieval from institutional repositories, which are equipped with authorgenerated metadata processes for self-archiving. In developing name access point control data for the system, the primary data were created from the existing authority. However, unlike the existing authority data, the primary data did not use any authority forms. Instead, the data utilized all the forms provided by the resources as access points. Specifically, field of activity(subject) and title information on authorship were used to distinguish between persons who have the same name. The result showed that the system improved the performance of the information retrieval. The system has been also expected to be utilized over other metadata provided by libraries, in addition to the institutional repositories, in order to provide better quality information.

Evaluation of Open-source Software for Participatory Digital Archives: Understanding System Requirements for No Gun Ri Digital Archives (참여형 아카이브 구축을 위한 오픈소스 소프트웨어 평가 - 노근리디지털아카이브 구축을 위한 예비분석 -)

  • Park, Taeyeon;Sinn, Donghee
    • Journal of Korean Society of Archives and Records Management
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    • v.16 no.1
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    • pp.121-150
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    • 2016
  • This paper reports the evaluation of six open-source software systems for participatory digital archives. This is an effort to create a digital platform for the social memory of No Gun Ri, which was first recognized in 1999 as a civilian massacre. The process of how it was reported and investigated is critical to understanding this brutal incident. In addition, the course of its cultural recovery has witnessed the reconstruction of the No Gun Ri memory. Thus, it is important to embrace the social memory around the massacre in these archives. In consideration of a virtual space for memory, this study takes the form of participatory archives to provide a mechanism in which anyone can share their memories. As a way to find a digital archives system for No Gun Ri, this study analyzed open-source software based on identified functions and requirements for participatory digital archives. Knowing the details of digital systems, this study discussed how contents for social memory can be stored and used in a digital system.