익산 미륵사지 석탑의 가치 보존을 위한 석재 재사용

김현용,Hyun-Yong Kim 한국건설순환자원학회 2024 한국건설순환자원학회지 Vol.19 No.1

우엉분말을 첨가한 쿠키의 품질특성

김현용,김경희,육홍선,Kim, Hyun-Yong,Kim, Kyoung-Hee,Yook, Hong-Sun 한국식품조리과학회 2017 한국식품조리과학회지 Vol.33 No.3

Purpose: The study investigated the quality characteristics of cookies prepared 0, 10, 20 and 30% burdock (Arctium lappa L.) powder. Methods: Cookies were manufactured with 0%, 10%, 20%, and 30% wheat flour substituted for burdock powder. Results: Density of the dough showed no significant differences with increasing amount of burdock powder, whereas pH of the dough decreased with increasing burdock powder content. The pH of cookies decreased with increasing burdock powder content, whereas $^{\circ}brix$ of cookies increased with burdock powder content. The moisture contents of cookies increased with increasing burdock powder content. The spreadability of cookies decreased with increasing burdock powder content. The L-value of cookies decreased, a-value increased, and b-value decreased with increasing burdock powder content. The hardness of cookies decreased with increasing burdock powder content. Total polyphenol contents and DPPH radical scavenging activity increased with increasing burdock powder content (p<0.05). In the sensory evaluation, appearance, color, flavor, and texture were highest in the control group, whereas sweet taste and savory taste were highest in the added group. For overall acceptance of cookies, 10% burdock powder cookies showed higher values than the control and other samples. Conclusion: Results suggest that cookies manufactured with 10% burdock powder are the most optimal product.

순환식 반응기에서 $TiO_{2}$ 광촉매를 이용한 Chromium(VI)의 제거에 미치는 영향인자에 대한 연구

김현용,조일형,이소진,기원주,이홍근,Kim, Hyun-Yong,Cho, Il-Hyoung,Lee, So-Jin,Ki, Won-Ju,Lee, Hong-Keun 한국환경보건학회 1999 한국환경보건학회지 Vol.25 No.3

This study was carried out the removal of Cr(VI) which was known to the toxic pollutant in industry using the process of UV and TiO$_2$ photocatalyst in a circular type reactor. In this experiment, the series of photocatalytic process for the removal of Cr(VI) has been selected as a model reaction in a circular type reactor in order to obtain the basic data on the influence of various experimental parameters such as circulation flow rate, pH of solution, initial Cr(VI) light illumination and TiO$_2$ dosage, and salicylic acid concentration. The results of this study were as follows; 1. With both UV light illumination and TiO$_2$ present, Cr(VI) was more effectively eliminated than with either UV or TiO$_2$ alone. 2. As the circulation flow rate of solution increased, the removal efficiency of Cr(VI) was increased. However, over 2.4 l/min of circulation flow rate, the efficiency wa limited. 3. A increase in the photocatalytic removal of Cr(VI) was noticed with decreasing pH. 4. An increase in the photocatalytic removal of Cr(VI) was noticed with decreasing Initial Cr(VI) concentration and first order kinetics was observed from the result at different initial concentration of Cr(VI). 5. Photocatalytic removal efficiency of Cr(VI) increased with increasing TiO$_2$ dosage. However, over 1.0 g/l of TiO$_2$ dosage, the efficiency reached a plateau. 6. As low concentration of saliculic acid were added, there was an increase in the removal efficiency of Cr(VI). However, over 300 mg/l of salicylic acid, the efficiecy was decreased. It eas found that application of photocatalysis to water treatment that contains both Cr(VI) and salicylic acid was possible.

원유가 상승이 근해어업의 경영수지에 미치는 파급효과 분석

김현용(Hyun Yong Kim),강연실(Yeun Sil Kang),김현용(Hyun Yong Kim) 한국수산경영학회 2001 수산경영론집 Vol.32 No.1

The study, using the input-output analysis of 402 industrial sectors by Bank of Korea(BOK) and the resulting outcomes of price model, aims to evaluate the spillover effects the international fluctuations in crude oil prices have on the commodities prices and consequently, analyse the management and profitability of the offshore fisheries in Korea. At present, the fishermen are provided with tax-free oils for their fishing operations as specified under the Special Tax Treatment Control Law. However, the exhaustion of marine resources and new international fisheries agreements, which resulted in the loss of fishing grounds, made the stable catch even more unpredictable and the hike in the price of the international crude oil would have adverse effects on the fishing industry. The study revealed that the increasing rise in the price of crude oil would exert sweeping spillover effects on other industry sectors in general and accordingly, lead to a poorer performance by fisheries. The price spillover coefficients for the diesel oil was 0.6026, which would translate into the 42.6% increase in the prices of oil when the increase ratio of 73.3% for the base crude oil was applied based on the calculation methods employed in the study. This in turn increased the ratio of diesel oil required in the offshore fisheries from 23.3% to 16.6%, diminishing the ratio of current net profits to minus 2.0% from 4.2% otherwise. By fishing type, the Pair Trawl suffered current net profits loss most by ratio of minus 9.4% and other fisheries such as Coastal Stow Nets, Coastal Angling, Danish Sein also suffered ratio of 7% and more in the loss of current net profits. With the deteriorating fishing performance, coupled with the increasing international crude oil prices, it is urgently required that the authorities concerned deliberate in depth on such schemes as follows in efforts to secure stable fishing production. First, provision of large-scale storage facilities for oil is needed to timely adapt to the fluctuations in international crude oil prices. Secondly, in line with the stabilization of tax-free oil prices, duty levied on oils for fishing and tax collected from the refineries need to be tax-exempt. Thirdly, the beneficiaries from the provision of tax-free oil should be broadened, not limited to special fishing operation only. Fourth, investment in stabilization of the oil prices should be encouraged, possibly through funding from the formation of fisheries development funds underway.

YOLO를 이용한 공사 현장 작업자의 보호장구 착용여부 및 위험지역 진입여부 검출

김현용(Hyun-Yong Kim),박태형(Tae-Hyoung Park) 대한전기학회 2021 정보 및 제어 심포지엄 논문집 Vol.2021 No.10

TiO₂를 이용한 Humic Acid의 광촉매분해에 대한 영향인자에 관한 연구

김현용(Hyun Yong Kim),조일형(Il Hyoung Cho),이홍근(Hong Keun Lee) 한국환경보건학회 1999 한국환경보건학회지 Vol.25 No.2

The photocatalytic degradation of humic acid which is precursor of trihalomethanes (THMs) formed after chlorination was carried out in aqueous suspensions of TiO₂ as photocatalyst by illumination with UV light. Comparison of UV photolysis, TiO₂ adsorption and UV/TiO₂ phtocatalysis as well as the effect of reaction conditions such as UV intensity, TiO₂ dosage and H₂O₂ concentration on the degradation of humic acid was examined. The major results of this study were as follows: 1. With both UV illumination and TiO₂ present, humic acid was more effectively degraded than UV or TiO₂ alone and degradation efficiency of humic acid by Photocatalysis was 76.2%. 2. Photocatalytic Degradation of humic acid increased linearly with increasing UV light intensity. 3. Degradation efficiency of humic acid increased with increasing TiO₂ dosage. However, over 2 gll of TiO₂ dosage, the efficiency was limited because UV light is blocked by catalyst itself. 4. Addition of H₂O₂ as oxidant enhanced the efficiency of photocatalytic degradation on humic acid but the degradation efficiency reached a plateau over 500 mgll of H₂O₂

절차지향 개발 패러다임에서 Pipe & Filter 패턴을 이용한 개발 프로세스 단순화 전략

김현용 ( Kim Hyun Yong ),김순태 한국정보처리학회 2016 한국정보처리학회 학술대회논문집 Vol.23 No.1

많은 embedded 소프트웨어는 전통적 절차적 언어인 C로 작성되며 embedded 시스템에 특화된 역할을 수행한다. 한편 기존 절차적 언어인 C는 현대의 객체지향적 개발 패러다임과 비교하면 코드의 확장성, 유지 보수성, 재사용성에 있어서 많은 어려움이 있으며 아직도 많이 사용하고 있지만 이 C의 유지 보수성과 확장성, 유연성을 확보하여 보다 생산적이고 유지 보수가 쉬운 패러다임으로서 함수 pooling이라는 개념과 이를 이용한 framework를 구현한다.

아동복지시설 부문의 개정방향

김현용(Hyun Yong Kim) 한국아동복지학회 1998 한국아동복지학 Vol.- No.7

아동인구의 감소, 가족의 변화, 경제발전 등 아동을 둘러싸고 있는 사회환경의 변화로 시절보호 역시 변화를 필요로 하고 있다. 시절보호 중심의 현재의 법규정은 다양한 아동복지사업의 요구에 따라 이를 반영하는 방향으로 변화되어야 한다. 그러기위하여는 시설의 형태가 소규모화되거나 가정중심의 아동복지시설로 변화 발전되어야 한다. 또한 지금까지의 불합리한 시절보호방법이 개선될 필요가 있다. 뿐만 아니라 열악한 상태에 있는 아동보호 수준을 일반가정 수준으로 향상시킬 노력이 필요하다. 이 점에 있어서 다른 선진국의 아동복지시절을 비교하면, 일본은 우리와 비슷한 설정으로 시설복지중심의 서비스 공급체계를 재가복지중심체계로 전환하교 있다. 미국의 1709년의 요보호아동을 위한 백악관 회의와 1960년대의 營시죙화 정책, 영국의 1948년의 아동법 제정의 기초가 된 커티스위원회의 보고서를 토대로 시설보호 중심의 아동복지사업에서 가정중심 서비스로 전환한 바 있다. 새로운 아동복지법에서는 요보호아동에 대한 재정의, 요보호아동 발생의 예방조치의 명문화, 요보호아동의 보호조항에 대한 개선, 아동복지시설의 형태의 개선, 기존아동복지시설의 목적변경에 대한 유연성 부여, 아동보호시절에서의 아동보호 수준의 개선, 아동복지시절 종사자의 자격증 강화 및 처우 개선, 아동복지시설의 정가를 통한 서비스의 질의 향상, 등에 대한 아동복지법의 관계 규정을 개정하거나 새로운 규정을 명문화하는 것이 요구된다. The purpose of this study is to review the institutional child care program and to propose the opinion in the revision of the child welfare law which the government is now making. Social environment for children has been changing due to the reduction of children, the change of family and the economic development. Consequently it requires new child welfare program. Institutional child care has been a very important program until now since the creation of the modem child welfare in Korea. But findings of the study indicate that the family-centered programs must replace it and the remaining institutional care programs also have to be reformed. The history of child welfare in Japan, England and America suggests that we should go in this way. Major proposals are as follows: 1. The needy children should be redefined and the Treasures for the prevention of the needy children should be include in the new law. 2. The institutional care programs should be transformed to the foster care, group home and small size institutions. 3. The quality of residential child care programs should be improve not only in the level of the routine daily life of the child, the treatment of the staffs and the community involvement, also in the regular evaluation of the programs.

특별기고 : 한국사회복지 서비스의 사회정책 방향

김현용(Hyun Yong Kim) 한국사회보장학회 1994 사회보장연구 Vol.10 No.2

N/A

Fast Handover 메커니즘을 사용한 Hierarchical Mobile IPv6 의 성능 분석

김현용 ( Hyun-yong Kim ),김홍식 ( Hong-sik Kim ),정요셉 ( Joseph Jung ),송주석 ( Joo-seok Song ) 한국정보처리학회 2004 한국정보처리학회 학술대회논문집 Vol.11 No.1

무선망을 통해 인터넷(IP) 접근이 가능한 모바일 장치가 증가하고 있다. 그러나 기존의 IP 프로토콜은 이동성을 고려하지 않고 있기 때문에 IP 에 이동성을 부여한 Mobile IP 프로토콜이 제안되었다. Mobile IP 는 홈네트워크에 홈에이전트를 두어 모바일 장치에 이동성을 제공한다. 그러나 기존 Mobile IP 는 홈네트워크 등록 및 주소 재설정에 따른 핸드오프 지연 시간이 비교적 크다. 이를 해결하기 위해 새로운 모델이 제안되었다. 한 도메인을 담당하는 새로운 노드를 두어 등록에 따른 지연 시간을 줄인 Hierarchical Mobile IPv6 와 주소 재설정에 따른 지연 시간을 줄인 Fast Handover 메커니즘이 바로 그것이다. 이 논문에서는 Hierarchical Mobile IPv6 에 Fast Handover 메커니즘을 적용해보고, 핸드오프 지연 시간 및 end-to-end 간의 통신 성능을 시뮬레이션을 통해 평가해본다. 그리고 기존의 방법과 비교하여 성능 향상 정도를 알아본다.