• IEMEK Journal of Embedded Systems and Applications
• /
• v.13 no.4
• /
• pp.187-194
• /
• 2018

The operating system for IoT should have a small memory footprint and provide low power state, real-time, multitasking, various network protocols, and security. Although the Zephyr kernel, an operating system for IoT, released by the Linux Foundation in February 2016, has these features but errors generated by the user code can generate fatal problems in the system because the Zephyr kernel adopts a single-space method that both the user code and kernel code execute in the same space. In this research, we propose a space separation method, which separates kernel space and user space, to solve this problem. The space separation that we propose consists of three modifications in Zephyr kernel. The first is the code separation that kernel code and user code execute in each space while using different stacks. The second is the kernel space protection that generates an exception by using the MPU (Memory Protection Unit) when the user code accesses the kernel space. The third is the SVC based system call that executes the system call using the SVC instruction that generates the exception. In this research, we implemented the space separation in Zephyr v1.8.0 and evaluated safety through abnormal execution of the user code. As the result, the kernel was not crashed by the errors generated by the user code and was normally executed.

• Journal of the Korean Society for information Management
• /
• v.29 no.4
• /
• pp.165-189
• /
• 2012

This study investigated the current state of online subject guides in Korean academic libraries and suggests improvement. Through the examination of 100 academic libraries' Web sites, only 14 online subject guides were identified, showing that the development of online subjects guides in Korea is still in infancy. The examined online subject guides were evaluated as high quality in terms of accessibility, integration of information resources, and format consistency, but low quality in the provision of specialized subjects, user instruction, and information retrieval systems. An online subject guide should be a one-stop service that provides fast access to information resources along with subject-specialized user instruction and effective communication with librarians.

• The Journal of Korean Association of Computer Education
• /
• v.18 no.4
• /
• pp.31-40
• /
• 2015

The objective of this study is to develop and implement a smart device based instructional analysis application to enhance the efficiency of teaching in class. The main design features for this application are as follows: first, User Interface(UI) has been simplified to provide teachers a clear and easy-to-understand way to utilize the application. Second, the characteristics of Korean language were considered, such as sentence structure. Third, multi-aspect analysis is possible through adopting three analysis types - Flanders' interaction analysis, Tuckman's analysis, Mcgraw's concentration of instruction analysis. The practical instructional analysis application has been developed through this study, and this user-oriented application will be able to help teachers improve the quality of teaching in class. Also, this study can be a starting point for further researches on design principles of instructional analysis, especially with the recent technology and theories, such as a voice-recognition system, an edutainment applied instruction and an experiential learning.

• Journal of Korean Society for Quality Management
• /
• v.47 no.3
• /
• pp.509-522
• /
• 2019

Purpose: The purpose of this study is to analyze how the writing rules of the product user guide affect consumers' understanding of products and the prevention of product accidents. Methods: We surveyed consumers to see how the writing rules of the product user guide help consumers to understand products and prevent product accidents. Results: We derived the importance, necessity, usability, and readability of the principle of making product manuals through analysis of previous research. Usability is the writing rule of the product user guide that the consumer has the most influence on the understanding of product use and the product accident. Conclusion: It is necessary to make product user guide so that consumers can understand the function and safety of products by using video and various image media. Also, It is the obligation to explain all stages of the product and to communicate through the product user guide how to prevent the product accident step by step.

• Journal of the Korean Society for Library and Information Science
• /
• v.45 no.2
• /
• pp.163-184
• /
• 2011

The aim of this study is providing basic data to design successful in-service training program for teacher librarians by analyzing their preference on subjects of customized intensive programs for indicators of teacher expertise development. According to the survey, teacher librarians seem to regard training subjects such as Reading Education and Information Literacy Instruction related educational information services as core jobs and prefer developing instructional contents and materials. Under the levels of school it seems that teacher librarians in the elementary school are interested in programs for library activation, management of volunteers, analyses of users' needs and curricula, evaluations of user instruction and information literacy instruction. Older teacher librarians favor an understanding of metadata, building and supporting information system and instruction. Therefore, training subjects for teacher librarians should be formed by linking strategies between school library instruction and subject curricula. And in terms of the method of training, case studies and practical training might be better than lectures based on the theory.

• Journal of the Korean BIBLIA Society for library and Information Science
• /
• v.16 no.1
• /
• pp.27-43
• /
• 2005

This research is a study designed to identify the needs for information literacy instruction for the U.S. public library Internet service users. The levels and needs of Internet service users as well as the development and effectiveness of the Internet services at the U.S. public libraries were investigated. The survey was administered to the Internet service users at four public libraries in the upper Midwest region of the U.S.A total of 386 surveys were collected and analyzed. The result showed that as the years of Internet use experience and the level of expertise increases, user satisfaction decreases. However, the users who had taken any Internet class showed more satisfaction than who had not. This research offers a new direction and need for information literacy instruction for public library Internet service users.

• Journal of the Korean Society for information Management
• /
• v.31 no.4
• /
• pp.133-159
• /
• 2014

The purpose of this study was to investigate the librarians' perceptions of the customized bibliographic instructions (CBI) at four-year academic libraries in Korea. The study also examined instruction librarians' perceptions of the obstacles and the factors associated with the effective adoption and delivery of the CBI. This study conducted both a survey research method and an in depth-interview. The findings of the study revealed the librarians' perception of the obstacles and facilitators in adopting and operating the CBI, which suggests useful strategies to apply in delivering the CBI in academic libraries.

• Journal of the Korean Institute of Educational Facilities
• /
• v.12 no.6
• /
• pp.26-35
• /
• 2005

The purpose of this study is to suggest improved Special Instruction Classrooms(SIC) in terms of architectural planning based on the analysis of design characteristics and problems. For this study, SICs in 20 elementary schools located in Daegu were selected and investigated. The results of investigation showed that: first, the vertical separation type is mostly preferred for the layout of SICs; second, the top floor is preferred for the location of SICs. We suggest that first, each SIC should be located with consideration of the characteristics of subjects(); second, the degree of adjacency-room preference for each room should be taken into consideration for the zoning of the SICs(, ); finally, a direction for improvement for suitable architectural design of each SICs should be based on the feasibility of learning space().

• Journal of Information Management
• /
• v.25 no.3
• /
• pp.1-27
• /
• 1994

HyperCard used the concept of hypertext not only is the database management program and the educational medium used hypermedia but also provides the environment able to develop the educational software. In this paper, the concept and characteristics of HyperCard are reviewed, and the example applied HyperCard program to library user education are given.

• Journal of the Korean BIBLIA Society for library and Information Science
• /
• v.35 no.1
• /
• pp.193-219
• /
• 2024

This study aims to investigate and analyze the current status of user education and the school library staffs' perceptions in elementary school libraries in Gyeongnam, and then to propose a plan to improve user education in school libraries. Among the 168 school libraries in the Gyeongsangnam-do where librarians are deployed, 120 that responded to the survey were selected as research subjects. The contents of the study include the contents and methods of user education, the status of librarian education for user education, school library staffs understanding and interest in user education, school library staffs' perceptions of the necessity and effectiveness of user education, and school library staffs' efforts to strengthen capacity of user education. Based on the current status of user education and the results of the school library staffs' perceptions survey, the following are proposed as a way to improve user education of the school library: 1) expanding librarian education opportunities for user education, 2) development and distribution of educational materials that diversify the content and level of each grade, 3) organizing normal school hours for user education, 4) continuous efforts to strengthen capacity for user education.