• Journal of the Korean Institute of Telematics and Electronics B
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• v.30B no.5
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• pp.43-51
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• 1993

A new Hangul code called Truecode is developed for accomodating to the future computing environments of graphical user interface and multimedia as well as for corresponding with the invention principle of Hangul. Truecode is not a forced two-byte code of syllable unit, as completion-type of combination-type, currently used, but a one byte code of phoneme unit, which can represent initial consonant, vowel, and final consonant each. It is quite different from three-byte code of syllable unit and also does not require the fill code used for three-byte code. We expect great contribution to the Hangul culture from Truecode's some important following features. It can express all the Korean characters we may imagine and does not cause any problem in communication. As well as we may use direct connection font, we can assign ont-to-one correspondence between Truecode and a keyboard with three sets. Truecode has a good advantage in developing application softwares of Hangul and it can nicely be applied to the fields of speech recognition and artificial intelligence using natural language.

• Journal of the Korean Institute of Telematics and Electronics
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• v.20 no.5
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• pp.23-30
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• 1983

A new runlength-limited minimum-bandwidth line code is designed by modifying the duobinary code. Since the new code is runlength limited, the need for a data scrambling before transmission is eliminated. The eye width and the error probability of the new code are shown to be almost the same as those of the duobinary code. Also, the power spectral shape is scarcely changed, so that the new code is suitable for such low-pass channels as optical fibers.

• Journal of The Institute of Information and Telecommunication Facilities Engineering
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• v.9 no.3
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• pp.112-118
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• 2010

This paper propose G-code and G-Pedigree system that are development based on the e-Pedigree and EPC, and RFID solutions for logistics management is proposed. The proposed G-Pedigree system to include the forward logistics and reverse logistics all logistics and management systems are appropriate for the event, with security features, security and accessibility of critical data was strengthened. The proposed G-code systems and the EPC code of the existing RFID readers, tags can be applied to, the more you can manage the logistics-related information.

• Journal of computational fluids engineering
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• v.21 no.3
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• pp.89-97
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• 2016

In this study, direct code coupling, in which two codes share a single flow field, was conducted using 3-dimensional high resolution thermal hydraulics code, CUPID and 1-dimensional system analysis code, MARS. This approach provide the merit to use versatile capability of MARS for nuclear power plants and 3-dimensional T/H analysis capability of CUPID. Numerical Method to directly couple CUPID and MARS was described in this paper. The straight flow and manometer flow oscillation were calculated to verify conservation of coupled CUPID/MARS code in mass, momentum, and energy. This verification calculations indicates that the CUPID/MARS is coupled appropriately in numerical aspect and the coupled code can be applied to nuclear reactor thermal hydraulics after validation against integral transient experiments.

• Proceedings of the Korea Contents Association Conference
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• 2004.05a
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• pp.330-334
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• 2004

Java bytecode is stack-base code. Stack-base code makes analysis and optimization hardly because use stack access imperative. Therefore, fragment of code that is problem that occur in stack-base code optimization, loss of type information, unnecessary Load and Store can appear. Optimization and analysis of bytecode design bytecode framework by solution way of problem that is difficult. This paper indicates optimization of bytecode and hangup of analysis, and describe research contents about existent byte code optimization technology. This propose byte code framework by the alternative to simplify analysis and optimization of byte code.

• KSII Transactions on Internet and Information Systems (TIIS)
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• v.14 no.7
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• pp.3156-3167
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• 2020

One drawback of polar codes is that they are not universal, that is, to achieve optimal performance, different polar codes are required for different kinds of channel. This paper proposes a polar code construction scheme for Nakagami-m fading channel. The scheme fully considers the characteristics of Nakagami-m fading channel, and uses the optimized Bhattacharyya parameter bounds. The constructed code is applied to an orthogonal frequency division multiplexing (OFDM) system over Nakagami-m fading channel to prove the performance of polar code. Simulation result shows the proposed codes can get excellent bit error rate (BER) performance with successive cancellation list (SCL) decoding. For example, the designed polar code with cyclic redundancy check (CRC) aided SCL (L = 8) decoding achieves 1.1dB of gain over LDPC at average BER about 10^-5 under 4-quadrature amplitude modulation (4QAM) while the code length is 1024, rate is 0.5.

• Nuclear Engineering and Technology
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• v.45 no.5
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• pp.665-674
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• 2013

This paper presents the development and validation methods of the FUTURE (FUel cycle analysis Tool for nUcleaR Energy) code, which was developed for a dynamic material flow evaluation and economic analysis of the nuclear fuel cycle. This code enables an evaluation of a nuclear material flow and its economy for diverse nuclear fuel cycles based on a predictable scenario. The most notable virtue of this FUTURE code, which was developed using C# and MICROSOFT SQL DBMS, is that a program user can design a nuclear fuel cycle process easily using a standard process on the canvas screen through a drag-and-drop method. From the user's point of view, this code is very easy to use thanks to its high flexibility. In addition, the new code also enables the maintenance of data integrity by constructing a database environment of the results of the nuclear fuel cycle analyses.

• Proceedings of the SAREK Conference
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• 2005.11a
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• pp.97-103
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• 2005

The purpose of this code is to relate the various controllable factors to the comfort and well-being of the people using the building, so that the requirements of the system design and installation of residential mechanical ventilation. The recommendations made in this code recognize the need to optimize the use of energy, reduce hazards and minimize effects detrimental to the environment. This code was prepared by a committee convened by SAREK. The code provides broad guidance only on certain topics. The titles of standard and code referred to in this code are listed on the reference.

• ETRI Journal
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• v.28 no.2
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• pp.227-230
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• 2006

There has been a growing need for increased capacity in cellular systems. This has resulted in the adoption of the code division multiple access (CDMA) system as a multiple channel access method. Thus, it is important to obtain the phase offsets of binary codes in the CDMA system because distinct phase offsets of the same code are used to distinguish signals received at the mobile station from different base stations. This letter proposes an efficient algorithm to compute the phase offset of a binary code in the CDMA system through the use of the basic facts of number theory and a new notion of the subcodes of a given code. We also formulate the algorithm in a compact form.

• Proceedings of the IEEK Conference
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• 2006.06a
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• pp.999-1000
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• 2006

The LDPC Code is focusing a powerful FEC(Forward Error Correction) codes for 4G Mobile Communication system. LDPC codes are used minimizing channel errors by modeling AWGN Channel as VDSL system. The performance of LDPC code is better than that of turbo code in long code word on iterative decoding algorithm. LDPC code are encoded by sparse parity check matrix. there are decoding algorithms for a LDPC code, Bit Flipping, Message passing, Sum-Product. Because LDPC Codes use low density parity bit, mathematical complexity is low and relating processing time becomes shorten.