• The Transactions of The Korean Institute of Electrical Engineers
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• v.62 no.2
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• pp.164-170
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• 2013

The commercial buildings are consuming about 30% of total energy used in Korea. And a large amount of energy consumption in commercial buildings is consumed by HVAC(Heating, Ventilation, Air Conditioning) system. Therefore, if we can reduce the energy consumption in HVAC or air-conditioning system in commercial buildings, the overall energy consumption in Korea can be reduced. Currently, an electricity charge called Time of Use (TOU) is applied to typical commercial buildings. This paper proposes the novel energy management method where the temperature setting of air-conditioning system are adjusted to minimize the use of electrical energy while indoor comfort level is retained. The simulation test for a typical commercial building shows that the proposed method gives over 10% savings in electricity bills and electricity consumption compared to the conventional air-conditioning method.

• Korean Journal of Microbiology
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• v.24 no.1
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• pp.18-23
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• 1986

A new type II restriction endonuclease, Bdi I, has been isolated from Brenibacterium divaricatum FERM 5948 by procedures of ammonium sulfate fractionation, DEAE-cellulose chromatography and heparin agarose chromatography. The purified Bdi I restriction endonudlease had the same cleavage patterns of Cla I whose recognition sequence is 5' ATCGAT 3'. From the result that ${\lambda}-Cla$ I DNA frahment could be cloned in pBR 322 digested with Bdi I, it has been proven that Bdi I cuts between T and C(5' AT/CGAT3') within the recognition sequence and produces 5'pCG cohesive end. The optimal temperature for the Bdi I restriction endonuclease activity was $37^{\circ}C$, and optimal salt (NaCl) concentration was 50-100 mM.

• Journal of Ocean Engineering and Technology
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• v.27 no.6
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• pp.16-21
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• 2013

In this paper, the mooring system for a floating wave energy farm is designed based on a two-dimensional analysis. The mooring system uses an anchorless mooring line linking two floaters in a floating wave energy farm. The basic equation to determine the length of the mooring line between the two floaters is proposed. The other properties such as the diameter and pretension are taken from the mooring line for a single floater. The dynamic behavior and safety of the designed mooring system under extreme ocean conditions are analyzed with the commercial software Orcaflex. A numerical study shows the stability and high safety in tension of the designed mooring lines for a floating wave energy farm. The proposed anchorless mooring system for a floating wave energy farm results in a considerable reduction in the length of the mooring line, contributing to the economics of a floating wave energy farm.

• The Journal of Korean Medicine Ophthalmology and Otolaryngology and Dermatology
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• v.32 no.2
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• pp.107-119
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• 2019

Objectives : The purpose of this study is to report the effectiveness of Cheongshimyeonja-eum gagambang and Soyeom pharmacopuncture for nummular eczema patients. Methods : This study was conducted with three patients treated with nummular eczema at Cheonan Oriental Medical hospital of Daejeon university. All three patients were treated with Cheongshimyeonja-eum gagambang and Soyeom pharmacopuncture. For the evaluation of the results, we used Visual Analogue Scale(VAS) as an assessment methods and took photographs of the lesions for comparison. Results : After the medication, eczema lesions of the three patients were remarkably improved. The lesions were examined by the photographs and the VAS of pruritus and relating symptoms, Conclusions : This study suggests that Cheongshimyeonja-eum gagambang and Soyeom pharmacopuncture could show effectiveness on nummular eczema.

• The Journal of Korean Medicine Ophthalmology and Otolaryngology and Dermatology
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• v.34 no.3
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• pp.102-111
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• 2021

Objectives : The purpose of this study is to report the case of a presbycusis patient whose hearing had improved. Methods : A 81-year-old male diagnosed with presbycusis were treated with Korean medical interventions (acupuncture combined with electromagnetic stimulation and pharmacoacupuncture) and Threshold sound conditioning(TSC) for 3 months. Pure tone audiometry(PTA) was performed for the evaluation. Results : The patient's hearing was improved from moderate to mild level according to the Classification of Hearing Loss(International Organization for Standardization, 1969). The average hearing were improved from 40.5 dB to 32.7dB on the left side, 46.9dB to 34.1dB on the right side. Conclusions : We observed an improvement in a presbycusis patient's hearing and hereby suggest the possibility of Korean medical treatment and TSC's ameliorating effect on sensorineural hearing loss as well as prebyscusis.

• Proceedings of the Korea Water Resources Association Conference
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• 2015.05a
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• pp.579-579
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• 2015

최근의 환경부의 환경관리정책은 기존의 BOD나 COD로 대표되는 이화학적인 분석으로 수질항목을 측정 분석하여 환경규제로 활용되고 있는 상황에서 환경용량 기반의 수용체 중심의 통합관리방안을 추가하여 규제하는 방법으로 이루어지고 있다. 또한 수질관리부분에서도 2006년 "물환경관리 기본계획('06-'09)"을 수립하여, 생태적으로 건강하고 유해물질로부터 안전한 물환경조성 목표하에 오염원 중심에서 수용체 중심 즉, 통합적인 수질관리 방향으로 추진되고 있다. 하지만 하 폐수에 함유된 모든 유해화학물질에 대하여 배출허용기준을 설정하는 것이 현실적으로 불가능하기 때문에 환경부에서는 "생태독성 통합관리제도(WET : Whole Effluent Toxicity)"를 도입, 2007년 상기법의 시행규칙 개정을 통하여 배출허용기준에 생태독성기준을 추가하여 관리하고 있다. 생태독성을 평가하는 생물군에는 박테리아, 조류, 물벼룩, 어류 등 다양한 생물종이 있으며 국내에는 물벼룩을 이용하여 TU라는 생태독성단위를 이용하여 규제 및 관리를 시행하고 있으나 단일 생물종으로만 관리할 경우 생물의 내성 및 특정 유해물질에만 반응하는 특성을 지니고 있어 여러 가지 복합적인 화합물에 적용하기 위해서는 복수종에 대한 관리 및 규제가 필요한 실정이다. 따라서 본 연구에서는 반달말(조류)를 이용한 WEMS(Water Enviroment Monitoring System)를 이용하여 하천 호소 및 정수장, 하 폐수처리장등 다양한 현장에 적용하여 화학물질군에 대한 독성의 특성을 파악과 더불어 통계학적 처리를 이용하여 수질관리에 대한 방법을 제시하고 과학적이고 현장 특성에 맞는 경보 수준을 통해 수생태관리에 관리에 기여 할 수 있을 것으로 기대된다.

• Journal of the Korea Institute of Information Security & Cryptology
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• v.9 no.4
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• pp.49-60
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• 1999

In this paper we introduce the definition and historical overviews of computer virus program and review their side-effect and ways of infections. We describe the feature of CIH virus which damaged lots of PC systems in Asian countries recently and propose new methods how to rescue against destruction under the operating system of the Microsoft's Windows 95/98. Our experiment results can fix hard disk having FAT32 file system structure and show some popular program cases of having recovered by commercial vaccine program.

• The Journal of Korean Medicine Ophthalmology and Otolaryngology and Dermatology
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• v.35 no.2
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• pp.72-81
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• 2022

Objectives : The purpose of this study is to report the case of a bilateral sudden sensorineural hearing loss patient whose hearing had improved by Korean medical treatment combined with threshold sound. Methods : A woman diagnosed with bilateral sudden sensorineural hearing loss has treated with Korean medical interventions(acupuncture combined with electromagnetic stimulation and pharmacoacupuncture) and threshold sound conditioning(TSC) for 20 weeks. Pure tone audiometry(PTA) was performed for the evaluation. Results : The average hearing level has improved from mild to normal level. The level of tinnitus has decreased from VAS 10 to VAS 4. Conclusions : We observed an improvement in a bilateral sudden sensorineural hearing loss patient's hearing and hereby suggest the possibility of Korean medical treatment and TSC's ameliorating effect on sensorineural hearing loss.

• The Journal of the Korea institute of electronic communication sciences
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• v.18 no.6
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• pp.1291-1298
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• 2023

Surveillance reconnaissance sensor network is used for surveillance in wartime and area of operation. In this paper, we propose a target localization method using the detection signal strength of seismic sensors. Relay equipment calculates the target location using coordinate information and detection signal strength of the seismic sensors. Target localization error deviation due to environmental factors was minimized by subtracting the dynamic offset when calculating the target location. Field test shows improvement of target localization through reduction of errors. The average error was decreased to 3.62m. Up to 62% improved result was obtained compared to weighted centroid localization method.

• Polymer(Korea)
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• v.29 no.6
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• pp.536-542
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• 2005

The effect of lime-related parameters such as loading velocity, load application time, gauge reading time on Rockwell hardness measurement was investigated for PE, PP PVC, and PMMA. It was found that keeping the specific requirements in the same condition is very important to obtain reliable and repeatable darn in polymer hardness measurement. The optimum condition for hardness measurement was 4 sec for load application time,15 sec for test load application net time, and 15 sec for gauge reading time after unloading. Using thess conditions, round robin test was carried out for 6 laboratories and it was shown that the testing machine should be one in which time-related variables are controllable. Indirect verification of hardness tester using brass reference block was not enough to guarantee the test results for polymer.