• Proceedings of the Korean Information Science Society Conference
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• 2000.10a
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• pp.210-212
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• 2000

In this paper, we present a comcurrency control scheme over the index structure in main memory databases using multiversion mechanism, and implement it on T-tree. As a well-known idea for comcurrency control, multiversion allows multiple transactions to reat and write different versions of the same data item, each transaction sees a consistent set of versions for all the data items it accesses[1]. Logical versioning and physical versioning techniques are used to keep versions of data item and versions of index node respectively. The main features of this multiversion indexing approach are (1)update operations and rotations on T-tree can take place concurrently, (2)the number of locking and latching requirement is sharply reduced because read-only transactions do not obtain any locks or latches and update transactions obtain latches only when actually performing the update, (3)it reduces storage overhead for tracking version and reclaims storage in time, and (4)it provides complete isolation of read-only transactions from update transactions, so the read-only transactions can get response information without any block.

• Journal of Korea Spatial Information System Society
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• v.7 no.2 s.14
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• pp.81-89
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• 2005

Declustering and parallel index structures are important research areas to improve a performance of databases. Previous researches proposed several distribution schemes for parallel R-trees, however there is no search schemes to be suitable for the index. In this paper, we propose schemes to improve the performance of range queries for distribute parallel indexes. The proposed schemes use the features that a parallel disk can read multiple nodes from various disks. The proposed schemes are verified using various implementations and performance evaluations. We propose new schemes which can read multiple nodes from multiple disks in contrast that to the previous schemes which can read a node from disk. The experimental evaluation shows that the proposed schemes give us the performance improvement by 40% from the previous researches.

• Journal of Korean Academy of Fundamentals of Nursing
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• v.17 no.2
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• pp.142-148
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• 2010

Purpose: This study was done to determine how a hospital life guidance movie enhanced the understanding of hospital life by elderly in-patients. Method: A non-equivalent control group post-test design was used for the study. The experimental group watched a movie on guidance for hospital life while an in-patient control group read corresponding guidance booklets. The understanding and satisfaction from the respective programs for the two groups were surveyed with a questionnaire. The data were analyzed using SPSS. Results: The group which watched the movie had a better understanding of hospital life than the group which read the booklets. The patients who watched the movie also expressed more satisfaction with their guide program than the patients who only read the booklets. Understanding of hospital life had relevance to satisfaction with the given program. Conclusion: The results of this study suggests that a movie on hospital life provides better guidance which helps the prospective patients understand and adapt better to their hospital life. Therefore, this type of movie is considered to be an effective medium to provide guidance to elderly in-patients.

• Phonetics and Speech Sciences
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• v.9 no.2
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• pp.9-22
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• 2017

The purpose of this paper is to report the whole process of developing Korean Standard Speech Database (KSS DB). This project is supported by SPO (Supreme Prosecutors' Office) research grant for three years from 2014 to 2016. KSS DB is designed to provide speech data for acoustic-phonetic and phonological studies and speaker recognition system. For the samples to represent the spoken Korean, sociolinguistic factors, such as region (9 regional dialects), age (5 age groups over 20) and gender (male and female) were considered. The goal of the project is to collect over 3,000 male and female speakers of nine regional dialects and five age groups employing direct and indirect methods. Speech samples of 3,191 speakers (2,829 speakers and 362 speakers using direct and indirect methods, respectively) are collected and databased. KSS DB designs to collect read and spontaneous speech samples from each speaker carrying out 5 speech tasks: three (pseudo-)spontaneous speech tasks (producing prolonged simple vowels, 28 blanked sentences and spontaneous talk) and two read speech tasks (reading 55 phonetically and phonologically rich sentences and reading three short passages). KSS DB includes a 16-bit, 44.1kHz speech waveform file and a orthographic file for each speech task.

• Journal of the Korean BIBLIA Society for library and Information Science
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• v.24 no.3
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• pp.181-198
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• 2013

This study takes aim at finding how effective the usage of 'Read to Dogs' is for self-respect and reading improvement of elementary school students. For this, this study was compared and analyzed with pretest and posttest using 'tree pictures' of HTP and 'family pictures with motion' of KFD through performing, surveying, and art-therapy treatments. The result of this study showed that reading program using a reading -assistance- dog has a good effect on self-respect of children with reading inactivity. Also, this result will be used as useful information in developing and operating programs for children with reading inactivity in libraries and schools.

• Journal of Navigation and Port Research
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• v.33 no.1
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• pp.51-56
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• 2009

This paper presents the design of high sensitive/broadband tag antenna for Radio Frequency Identification (RFID) in Ultra High Frequency(UHF) band. A proposed tag antenna size is $60\;mm\;{\times}\;10\;mm\;{\times}\;1\;mm$. The resonant frequency is 910MHz and bandwidth is about 900 MHz at -10 dB below. The measured return loss and directional pattern have been confirmed a good agreement with the calculation results. The read range of proposed tag antenna with chip is observed about 6.5 m and proposed tag antenna has been observed an average 0.5 m for more than read range of the commercial tag antenna.

• Journal of Korean language education
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• v.29 no.4
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• pp.201-223
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• 2018

The purpose of this study is to observe the effects of text modification by comparing differences in Korean reading comprehension levels that arise from differences in vocabulary levels in texts. This study intends to use simplified texts with the vocabulary difficulty adjusted differently from the original text to measure reading comprehension levels of Korean learners and analyze the result. To measure reading comprehension, the researcher divided 55 Korean learners of intermediate to advanced level of fluency into two groups; the control group read the original text and the treatment group read a simplified text in which complex vocabulary were substituted with easier words of medium difficulty. Then the two groups were tested with the same questionnaire to measure comprehension levels of each group. The result showed that the groups that read simplified texts scored higher than the control group; this suggests that the reading comprehension level was increased in the treatment group. The experiment confirmed that unknown vocabulary density has direct impact on Korean reading comprehension. The result shows that the proportion of unknown vocabulary should be reduced for meaning-focused reading. It also demonstrates that comprehension of the learner was enhanced with lexical simplification rather than structural simplification i.e. simplification of grammar or sentences. Thus, diverse reading materials adjusted to the learners' level of fluency should be developed to enable reading for learning Korean. By reducing the burden of understanding the meaning of each vocabulary, learners will be able to achieve the initial goal of reading.

• International Journal of Knowledge Content Development & Technology
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• v.11 no.2
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• pp.7-21
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• 2021

The study was a descriptive cross-sectional survey which investigated the reading preferences of secondary school students in Nigeria during the lockdown occasioned by COVID-19 pandemic. A hundred secondary school students in Ile- Ife and Ilesa in Osun State, Nigeria were the study respondents. Close ended self-administered questionnaire was used to obtain data. Of the one hundred questionnaire which were applied to the study respondents, ninety-three were retrieved. Data obtained were analyzed using simple frequencies and percentages. The study established that majority of respondents were not pressured to read but read for pleasure. Preference for a wide range of fiction and non-fiction books which was read for purposes ranging from academic, social, relaxation and information was indicated by respondents. Availability of reading materials determined reading preference of majority of respondents as many could not afford to access electronic books whether free or not. The researchers recommended that different types of reading materials that suit the reading preferences and meet the diverse purpose of reading should be provided for the secondary school students during lockdown to improve their reading habits. Public libraries should function during this lock down period within the guidelines of the appropriate health authorities, while school libraries should be equipped to offer virtual services during the lockdown and the students should be exposed to e-books for their reading pleasure.

• Journal of Microbiology and Biotechnology
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• v.32 no.8
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• pp.1026-1033
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• 2022

This study presents a novel DNA part characterization technique that increases throughput by combinatorial DNA part assembly, solid plate-based quantitative fluorescence assay for phenotyping, and barcode tagging-based long-read sequencing for genotyping. We confirmed that the fluorescence intensities of colonies on plates were comparable to fluorescence at the single-cell level from a high-end, flow-cytometry device and developed a high-throughput image analysis pipeline. The barcode tagging-based long-read sequencing technique enabled rapid identification of all DNA parts and their combinations with a single sequencing experiment. Using our techniques, forty-four DNA parts (21 promoters and 23 RBSs) were successfully characterized in 72 h without any automated equipment. We anticipate that this high-throughput and easy-to-use part characterization technique will contribute to increasing part diversity and be useful for building genetic circuits and metabolic pathways in synthetic biology.

• The Journal of the Korea institute of electronic communication sciences
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• v.17 no.4
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• pp.709-714
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• 2022

The color change of the success of the steam sterilization indicator used in steam sterilization is currently being read by relying on the human eye. The result of color change on the success of sterilization can only be accurately read and judged by trained personnel. Developed an automatic reading system for steam sterilization indicators for the current human-dependent system, and developed an automatic reading device system for reading methods that were previously relied on with the human eye to develop a system that is more accurate and easier for anyone to read.