• Journal of the Korean BIBLIA Society for library and Information Science
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• v.14 no.1
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• pp.107-121
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• 2003

The object of this study is to compare qualitative level between Korean academic books and American academic ones evaluated by faculty members in Korea. To achieve this study, the data were produced by the questionnaires from faculty members of the Chonbuk National University. The major conclusions are summarized as follows: 1. As a whole, American academic books are evaluated more excellent than Korean academic ones. American academic books have more appropriateness of citation, level of content completion, usefulness of content, clearness of expression and accuracy of data than Korean academic ones 2. This study shows that American academic books are evaluated more excellent than Korean academic ones in every subject. 3. The respondents who had studied in the United States of America for more than two years evaluate American academic books more excellent than those for less than two years. 4. Regardless of the periods of study in America, however, most of respondents evaluate American academic books better than Korean academic ones in all fields.

• The Journal of Korean Institute of Communications and Information Sciences
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• v.16 no.10
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• pp.914-924
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• 1991

It has been generally used for PLL(Phase Locked Loop) to be synthesized randomly chosen frequency state, but the PLL locking time was inevitable element. A direct digital synthesizer. Which makes output frequency directly in sine wave by a phase accumulating method, could be leiminate the defect, although a phase distortion in frequency spectrum. In order to improve this disadvantage, the phase accumulating method is reconsidered in the side of he output wave formula expression. A new mechanism is proposed, and it is constructed by a most suitable logic elements. The spectrum of synthesized sine waveform is simulated and compared with a measured value, and it’s the coherence frequency hoppong state with the PN(Pseudo Noise) code sequence is confirmed. In this results, the power levels of phase distortion harmonics are decreased to 10~25dB and bandwidths are increased to 420kHz.

• The Journal of Korean Institute of Communications and Information Sciences
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• v.36 no.10A
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• pp.809-815
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• 2011

In this paper, we have proposed and implemented a novel architecture which can be used to effectively design the modified Euclidean (ME) algorithm for key equation solver (KES) block in high-speed Reed-Solomon (RS) decoder. With polynomial expressions of newly-defined state variables for controlling each processing element (PE), the proposed architecture has simple input/output signals and requires less hardware complexity because no degree computation circuits are needed. In addition, since each PE circuit is independent of the error correcting capability t of RS codes, it has the advantage of linearly increase of the hardware complexity of KES block as t increases. For comparisons, KES block for RS(255,239,8) decoder is implemented using Verilog HDL and synthesized with 0.13um CMOS cell library. From the results, we can see that the proposed architecture can be used for a high-speed RS decoder with less gate count.

• The Journal of Korean Institute of Communications and Information Sciences
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• v.37 no.5C
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• pp.376-383
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• 2012

In this paper, we provide a general expression of spatial multiplexing gain (SMG) for two mutually interfering multiple-input multiple-output (MIMO) broadcast channels, referred to as MIMO-IBC, when some of user messages are made available to base stations through a common noiseless backbone line. The MIMO-IBC has two base stations and multiple users, each equipped with multiple antennas, where independent messages are transmitted over fixed channels. From the derived results, we observe the variation of the SMG with respect to the presence of a coordination as well as various antenna distributions, and compare the derived result to the SMG of the case with full cooperation among users.

• The Journal of Korean Institute of Communications and Information Sciences
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• v.34 no.1C
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• pp.72-80
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• 2009

Look-up table based inverse halftoning from the digital color halftone image is proposed in this paper, which uses vector adaptive filter for the nonexisting patterns in the table. Halftone image is obtained from a continuous -tone image, which can be restored into continuous one from the digital binary image by way of inverse halftoning method. Look-up table based method usually processes fast and has even performances over the various halftoning. The numbers of pixels in the pattern of table and the method how to define the table elements for each R, G, B channels can effect largely for its performance. The proposed method uses 16 pixels in the table considering the diversity of the expressions from their patterns and with memory size as well. This also proposed how to combine R, G, B channels into one. Experimental results showed the better performance in the expression of colors, better color restoration and the short processing time compared with the conventional ones.

• The Journal of Korean Institute of Communications and Information Sciences
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• v.33 no.12B
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• pp.1123-1130
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• 2008

Baby's diseases diagnosis has inconvenient for received direct coming to help that order expression ability was insufficiency which consciousness situation concern about the infant health because of birth rate and decrease the marriage rate and divorce rate. So in this paper through the infant crying sound about home a foundation which infant diseases develop the system comparison normal infant with take a infant that analysis the extract the voice analytics component. Especially this paper propose about the methodology for development system that infant cold, infant pneumonia, infant asthma among extract the crying sound feature part for infant respiratory diseases discussion the most easy has involved the infant. So infant respiratory put case stimulus diseases about all voice organs and experiment the analysis method through the bandwidth about phonetics analysis component that comparison normal infant with take a respiratory infant. Through these method, we were extracted to results that infant's frequency bandwidth suffering from respiratory diseases than a normal infant is short.

• The Journal of the Korea institute of electronic communication sciences
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• v.13 no.4
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• pp.795-802
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• 2018

This study describes the semantic theoretic interpretation through the extensive use of semantic metaphors for intensive web interface with information and the metaphoric value of metaphors for interface design. Common factors that influence web design are empirical establishment and verification for generating web symbols and these are have important elemental perspectives that are used to assess the usefulness and key elements of the site. In addition, the structure of the screen has begun to change dynamically from the application of web technological functions, and the media functions have become important to make web standards when implementing visual structuring from the perspective of semiotic. Instead of using a technical expression approach to examine semiotic, a semiotic approach is applied to create aesthetic codes through the human-computer interface in terms of semiotic in a variety of natural and universal fields. Based on this, it is used as means of communication to convey the intended meaning to users so as to highlight the importance of the usability issues and metaphors user interface.

• Journal of the Korean Data and Information Science Society
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• v.25 no.5
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• pp.1011-1024
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• 2014

This study is to identify the relationship between unsaturated fatty acids, which are indicators of beef flavor, and unsaturated fatty acid biosynthetic enzymes, which are associated with SNPs in the SCD, SREBPs, $PPAR{\gamma}$, FABP4, FASN and LPL in Hanwoo population. For analysis of fatty acid in Hanwoo, we used to Hanwoo steer(n=513). Also, following an analysis of the relationship raised from Gyeongbuk province region. FABP4; g.3977-325 T>C was selected and the distribution of beef grade of g.3977-325 T>C related in field trial was proved very excellent.

• Journal of the Korea Institute of Information Security & Cryptology
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• v.27 no.3
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• pp.427-437
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• 2017

Impossible differential characteristics distinguish the corresponding block cipher from random substitution and can also be used for key recovery attack. Recently Cui et al. proposed an automatic method for searching impossible differential characteristics of several ARX - based block ciphers using Mixed Integer Linear Programming(MILP). By optimizing the method proposed by Cui et al., It was possible to find new impossible differential characteristics which could not be founded by the method by using less linear constraint expression than the existing method. It was applied to the SPECK family and LEA using the modified method. We found 7-rounds for SPECK32, SPECK48, SPECK64, SPECK96 and 8-rounds impossible differential characteristics of SPECK128. These impossible differential characteristics are all newly found. We also found existing 10-rounds of impossible differential characteristic and new 10-rounds of impossible differential characteristics of LEA.

• Proceedings of the Korean Institute of Information and Commucation Sciences Conference
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• v.9 no.1
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• pp.421-424
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• 2005

Recently, As the managing techniques of consuming method and transmission for the sharply increasing multimedia contents has been developed regardless of compatibility by each company, It is a serious obstacle to the development of the organized copyright techniques because nothing can be shared by each other. The MPEG committee under ISO established MPEG-21 framework for it and proposed the REL as the words taking care of copyright and standardized them. However, there seemed to be some problems that special knowledge such as Schema defining the structures of XML and REL should be necessary. Furthermore, There can be some obscurity when the authority of REL document and one of consumer side is different. Therefore, in this paper, we laid out and realized the copyright including consuming system to copyright and prove the REL documents more conveniently and RDD integration system using Web Services technology which can get rid of the vagueness of REL.