• Journal of the Korean Society of Food Science and Nutrition
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• v.7 no.2
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• pp.13-19
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• 1978

Limwonsibyukgi says that there are fifty-one kinds of beverage easily and cheaply to be made. Through the organoleptic test, I found that eleven kinds of beverages were valuable to develope and specialy yugijang was considered to be superior to coffee. In view of this, the developement of the korean native beverage is advisable in stead of coffee, in that we can recover the soul of our fore fathers and decrease the waste of foreign exchange.

• Journal of Institute of Control, Robotics and Systems
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• v.14 no.2
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• pp.205-211
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• 2008

This paper describes the method aimed at establishing the equipment measuring the parameter of Cable Network by Best proper Cable Modem and PDA through RS232 interface. In this paper, we propose our creative experimental configuration and develope the Cable Modem (DOCSIS 2.0) superior more performing than the referred Cable Modem (DOCSIS 1.0, 1.1) and the measuring equipment of HFC network compositing of Cable Modem and PDA through RS232 interface. This equipment analyzes Upstream (U/S) and Downstream (D/S) Signal quality and generates the signal of Upstream by CW signal. The paper also provides the experimental results to check the Best Proper Cable Modem and the displayed screen for parameters for SNR, BER and the demodulated IQ diagram of 256QAM through LCD of PDA. Henceforth, it'll be possible to support a variety of the functions for E-mail, Internet, the speed test of WEB connection and the transmission of the measured result real time by PDA.

• The Journal of the Institute of Internet, Broadcasting and Communication
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• v.9 no.3
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• pp.37-43
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• 2009

In this paper, we proposed that a novel method base on a binary image that technique is proposed for data hiding into binary images and halftone image. A binary image is bitmap image and halftone is composed by two-tone value in a limited region in an image. For this reason, it is not easy to hide messages in binary images. PWLC is a new method to hide a message in binary images. However, it yields images of unacceptable quality, unless you should change very few of it. Therefore, in order to solve this problem, we used run-length method into binary images. That is, we find a proper region to hide messages. In this paper, we proposed new method to hide messages in binary images. In addition, we proved that our algorithm is better than PWLC through the experiment.

• Journal of the Institute of Electronics Engineers of Korea TC
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• v.47 no.12
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• pp.8-16
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• 2010

In this paper, we present a structure of computationally efficient MIMO-OFDM transmitters, using STBC. Straightforward implementation of these systems requires separate WFT processing blocks for each of the transmit antennas. In our proposed scheme, we use symmetry properties of Fourier transform, and thus use a frequency domain encoding strategy. This greatly reduces the computational burden. The proposed scheme uses just a single IFFT block at each OFDM symbol period, and thus resulting in the same complexity as a single antenna OFDM system. As specific examples of the proposed schemes, we present frequency domain encoding matrices for QO-STBC-OFDM and QO-SFBC-OFDM transmitters.

• Journal of the Korean Chemical Society
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• v.30 no.6
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• pp.532-537
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• 1986

The kinetics of the reaction of $[Mo_2O_4(H_2O)_6]^{2+}$ with $VO_2^+$ have been studied at $25^{\circ}C$ by spectrophotometric method. Stoichiometry of the oxidation of$ [Mo_2O_4(H_2O)_6]^{2+}$ is followed as $Mo_2^V + 2V^V {\rightleftharpoons} 2Mo^{VI} + 2V^{IV}$. Observed rate constants are dependent on $ [H^+]\;and\;[VO_2^+]$. Mechanism for the redox of $[Mo_2O_4(H_2O)_6]^{2+}\;and\;VO_2^+$ is proposed and discussed.

• Journal of the Korean Chemical Society
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• v.29 no.6
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• pp.623-628
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• 1985

Rate constants for complexing with thiocyanate after ring opening of molybdenum-oxalate in acid media were obtained spectrophotometrically at 460nm. The acid-assisted dissociation of molybdenum-oxalate and the reaction of thiocyanate with oxalatooxomolybdenum (V) complex in acid media were investigated with thiocyanate and hydrogen ion concentration. The kinetic data indicate that molybdenum-oxalate is protonated to a limited extent in acid media and the protonated complex is responsible for an increase in rate for the reaction of thiocyanate with oxalatooxomolybdenum (V) complex. Replacement of an oxalate ligand in acid media has been interpreted in terms of dissociative mechanism involving bond-breaking of the oxygen trans to the yl oxygen.

• Bulletin of Food Technology
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• v.25 no.3
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• pp.276-281
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• 2012

우수 외식업지구 지정 및 지원 사업은 정부주도로 2012년부터 4년동안 전국 20개 주요 외식업 지구를 지정해서 매년 국비 20억원 씩 지원(5개소 4년간)하게 된다. 총 4년간 소요예산이 국비만도 400억에 달하며 각 지자체에서 지원되는 지방비를 합하면 800억원에 달하는 규모다. 식품산업이나 제조산업에 비하면 큰 예산이 아닐 수도 있으나 외식업에 대한 정부 차원에서 추진되는 첫 대규모 사업인 만큼 그 기대 또한 크다. 하지만 이러한 지구단위 외식업 육성의 문제점 또한 많다. 일례로 전남 지역 중 가장 많은 연간 650만명의 외지 관광객이 찾는 담양군의 경우 전체 600여개의 외식업소 중 죽녹원 인구 '남도음식 푸드필리지'에 속하는 외식업소는 20여개에 불과해 그 형평성에 대해 지역내 사업자들간에도 불만의 목소리가 터져 나올 수 밖에 없다. 또한 기존 유명관광지 주변에 위치한 외식업 지구에 지정되어 상대적으로 유리한 영업환경에 있었던 사업자들이 여타 불리한 조건하에서 노력하는 외식사업자들에 비해 경영의식이나, 친절도 및 부족한 부분에 대한 개선의지나 노력이 부족하다는 평은 많은 사람들의 입을 통해 회자되어 왔던 터다. 지자체별 그리고 전국 단위의 국제 경쟁력을 갖춘 유명외식업 지구를 육성한다는 취지는 나쁘다고 할 수 없지만, 가장 우선적으로 해당 외식업지구내 사업자들의 경영의식 개선 및 외식업 자체에 대해 공부하고 연구하는 풍토가 선결되어야 할 것이다. 또한 지역사회의 연계도 중요한 성공요인이다.

• Journal of Korean Society of Forest Science
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• v.96 no.4
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• pp.393-400
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• 2007

This research was conducted to develop the demand function and to estimate an increase of national parks visitors considering abolition of entrance fee, using dichotomous choice contingent valuation. Also, this study estimated the additional management cost with an increase of visitors. As a result, an average increase rate was estimated about 5.8% considering abolition of entrance fee. Each increase rate of national park is analyzed Bukhansan 9.0%, Gyeryongsan 8.5%, Deogyusan 8.2%, respectively. Seoraksan is the lowest rate of increase, 3.0%. Total additional management cost of 18 national parks was estimated about 5.6 billion won, Bukhansan 1.4 billion won, Jirisan 0.7 billion won, Dadohaehaesang 0.5 billion won, respectively.

• Journal of the Korean Geotechnical Society
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• v.21 no.5
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• pp.163-170
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• 2005

Track substructure (ballast, subgrade) should have sufficient strength and uniform stiffness to fully support track superstructure (rail, fastener, sleeper). Vertical support stiffness of track is strongly influenced by the condition of ballast and subgrade layers. Therefore, the evaluation of the condition of track substructure is very important to evaluate the vertical support stiffness of track. This paper proposes the trackbed evaluation system, which is composed of Ground Penetrating Radar (GPR), Portable Ballast Sample. (PBS), and Light Falling Weight Deflectomete. (LFWD), to diagnose track substructure. The laboratory and field tests are performed to evaluate the applicability of the proposed trackbed evaluation system.

• Journal of the Korea Institute of Information and Communication Engineering
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• v.8 no.7
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• pp.1453-1463
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• 2004

The conventional image segmentation method using level set has been disadvantage since level set function in the gradient-based model evolves depending on the local profile of the edge. In this paper, a new model is introduced by hybridizing level set formulation and complementary smooth function in order to smooth the driving force. We consider an alternative way of getting the complementary function(CF) which is much easier to simulate and makes sense for most cases having no triple junctions. The rule of thumb is that CF must be computed such that the difference between their average and the original CF function should be able to introduce a reliable driving force for the evolution of the level set function. This proposed hybrid method tries to minimize drawbacks the conventional level set method.