단일 화면에 의한 인체 자세 파악에 대한 연구

林鉉敎,李智秀 金烏工科大學校 1987 論文集 Vol.8 No.-

The stereophotogrammetry technique using double camera concerns the acquisition of exact coordinates of objects. But it criticized that the initial installation cost is high, and calibration and reconstruction procedure is tedious. For the analysis of human postures in sitting work, however, global understanding of coordinates is sufficient. In this paper, a new method using single camera is proposed. This technique is simple, needs low installation cost, and applicable to the analysis of human postures in sitting work, if several pruning rules are available which are appropriate to the characteristics of work.

인터넷 캐쉬를 위한 멀티미디어 데이터의 재배치 정책

홍현옥,임은지,박성호 동의공업대학 2000 論文集 Vol.26 No.1

Through the dramatic growth of Internet, it becomes easy for people to access geographically distributed vast amounts of information. But, currently Internet is suffering from problems such as server overload, network congestion and client response time. In addition, currently the number of continuous media data such as audio and video is growing rapidly. In this paper, we propose SCU(Smallest Caching Utility) proxy caching scheme that stores a portion of continuous media stream or entire stream on the Internet. The proposed scheme reduces client latency and maximizes the amount of data served directly from cache without accessing the central server. By caching the initial fraction of stream data, service startup latency can be reduced. And, by varying the size of the fraction of stream to be cached according to variation of stream popularity, we can utilize the cache space efficiently and maximize the amounts of data served directly from cache. We use the caching utility formula of each stream for the measurement of cache replacement. The way to measure popularity of continuous media stream should be different from that of traditional data such as text and image. We propose the method of measuring popularity of stream using the amounts of data played by clients. We have performed simulations to evaluate our caching policy, Simulation results show that our caching policy outperforms other caching algorithms such as LRU, LFU and SIZE in aspects of BHR(byte hit ratio), initial latency and replacement overhead.

불산 제조업체 근로자의 골밀도 변화에 관한 조사

김지용,임현술,정회경,이현경,강흥식 大韓産業醫學會 1995 대한직업환경의학회지 Vol.7 No.1

Hydrofluoric acid is one of strongest irritating, corrosive and poisonous inorganic chemicals. The most significant chronic consequence of excessive fluoride exposure is the disorder of skeletal system and connective tissue. The first stage of osteofluorosis consists of an increase in the density of flatbone such as pelvic bone and vertebral bones, with coarseness and blurring of bone trabecular. Therefore we wanted to observe the change of the bone density among workers exposed to hydrofluoric acid. Questionnairs and radiological investigations were performed for 39 hydrofluoric acid manufacturing factory worker sexposed to hydrofluoric acid. And then authors checked urinary fluoride level by fluoride ion method. The radiographs were doubly read by two radiologists for reliability. The results were as follows; 1. There was a significant difference in urinary fluoride level(p<0.01), but not in age, in tenure(p>0.05) among workers by the job title. 2. By the two radiologists, eight cases were read as bone fluorosis. The prevalence rate of bone fluorosis was 20.5%. 3. There was not a significant difference in general characteristic such as age, tenure and in muculoskeletal signs and symptoms between the fluorosis group and the normal group. 4. However, a close relationship between the occurence of the change of bone density and the degree of fluoride exposure such as burn was found. The difficulties in diagnosing fluorosis result from the questionable sensitivity of x-ray techniques and from the non-specific associated signs and symptoms. A quantitative method such as densitometry to assessosteosclerosis and bone structure alteration and a follow-up study are needed.

KS H ISO 1242 표준의 평가 : 라반딘 정유의 산값 측정

전혜림,이은지,장혜진,손현화,김건,김남선,전명숙,이동선 서울여자대학교 2010 자연과학연구논문집 Vol.22 No.-

The acid value (AV) as well as the ester value of essential oil is an important index to evaluate quality of essential oil. The official standard analytical method of KS H ISO 1242 dealing with “Essential oils - Determination of acid value” was assessed experimentally using two lavandin essential oils obtained in France as an example. One French lavandin oil sample showed the results of AV= 0.9 by both indicator method and potentiometry. Another sample showed AV = 1.9 by indicator method and AV = 1.6 by potentiometry. Latter lavandin oil sample exhibited significantly higher acid value than maximum value of 1 described in the standard. This result suggests that latter lavandin oil was contaminated, because this oil was contained in an orange juice bottle. Results of this study proved that KS H ISO 1242 could be used as a suitable scientific standard for the determination of acid value of essential oils.

학교 지역문화교육을 위한 지역협의체 구성에 관한 연구

김영순,임지혜,배현주 한국문화교육학회 2011 문화예술교육연구 Vol.6 No.2

The aim of this study was to search conditions activating the regional consortium for regional culture education in schools. Results of this study are follows: the regional consortium consists of parents of students, communities, schools, school boards, public institutes, and NGO groups. The consortium contribute the educational support and development for student activities in schools. Furthermore the consortium make an offer to coordinate and facilitate the delivery of information, resources, and services to students, educators, employers, and the community. Therefore, the consortium might be best described as "matchmakers" that help ensure that our customers are able to easily connect with providers of the services they need. The consortium will be made up of a network of service providers from across its region that all collaborate in helping to connect the local education and school communities. 본 연구에서는 지역 사회의 인적·물적 자산을 활용한 문화적 체험활동 교육이 활성화되고 정착되기 위한 방안으로 학교와 지역사회가 밀접한 관계를 형성할 수 있는 지역협의체를 구성하는 안을 제시하였다. 이를 위해 지역문화교육에 필요한 지역협의체에 대한 문헌연구를 수행하였고, 이와 유사한 실제 사례를 찾아 관련 전문가를 대상으로 한 심층인터뷰 결과를 정리하고 시사점을 도출하였다. 연구결과, 지역협의체는 지역특수성, 전문성, 개방성, 공공성, 지속성의 기본원칙을 전제로 하여 교육행정기관, 지자체 행정기관, 민간 및 공공기관, 학교 등의 협력을 통해 구성될 수 있다. 또한 지역에서의 문화적 체험활동의 효율적인 운영을 지원하기 위해 1) 지역사회 내 교육기부 협력기관을 모색 및 발굴·연계, 2) 지역의 교육 인프라 접근성 향상, 3) 지역의 문화 교육 자원 간 네트워크 확장, 4) 지역 내 긍정적인 담론 형성을 위한 홍보 및 인식 개선, 5) 지역문화교육 프로그램 수행 과정의 성찰 등의 역할을 수행해야 한다. 지역협의체를 통한 학교와 지역교육자원의 연계 방안은 교육자원의 유형과 교육운영 주체에 따라 분류될 수 있었고, 강동구청과 대구광역시교육청의 예를 통해 지역문화교육 지원의 구체적인 사례를 살펴볼 수 있었다. 이와 같이 본 연구에서 제안한 지역협의체의 구성은 지역문화교육의 활성화를 위한 초석을 마련해 줄 것이라고 기대해 본다.

서울의 Penicillinase Producing Neisseria gonorrhoeae 발생빈도(1997)

김재홍,문득곤,김정수,김용준,임동진,박상훈,김희성,이민수,송기훈,김갑형,김형석,성소영,이인섭,김석우,황지환,조창근,김경문,부태성 대한화학요법학회 2000 대한화학요법학회지 Vol.18 No.3

Background : In recent years, gonorrhea has been pandemic and remains one of the most common STDs in the world, especially in developing countries. Objective & Methods : For the detection of a more effective therapeutic regimen and assessing the prevalence of PPNG, we have been trying to study the patients who have visited the Venereal Disease Clinic of Choong-Ku Public Health Center in Seoul since 1980 by means of the chromogenic cephalosporin method. Results : In 1997. 99 strains of N. gonorrhoeae were isolated, among which 45(45.5%) were PPNG. Conclusion : The prevalence of PPNG in Seoul, which had been decreased to 39% in 1996 after a peak of 74.3% in 1993, is increased to 45.5% in 1997.

Two pediatric cases with hematuria, normal renal function and positive antineutrophil cytoplasmic antibodies

Ji Hyeon Lim,Jiwon Jung,Heounjeong Go,Joo Hoon Lee,Young Seo Park 대한소아신장학회 2022 Childhood kidney diseases Vol.26 No.2

Antineutrophil cytoplasmic antibody (ANCA)-associated glomerulonephritis requires prompt diagnosis and treatment, since renal function at the time of diagnosis is significantly associated with renal outcomes. Here, we report two pediatric patients with ANCA-positive glomerulonephritis initially presenting with hematuria, mild proteinuria, and normal renal function. The first patient with a high myeloperoxidase-ANCA titer (>134 IU/mL) was diagnosed with rapidly progressive glomerulonephritis based on renal biopsy and treated with immunosuppressive therapy after 10 months of follow-up. The second patient with a low myeloperoxidase-ANCA titer (11 IU/mL) maintained normal kidney function without medication. Two cases showed different clinical course according to ANCA titer.

Multi-response Optimization for Unfertilized Corn Silk Extraction Against Phytochemical Contents and Bio-activities

( Ji Eun Lim ),( Sun Lim Kim ),( Hyeon Jung Kang ),( Woo Kyoung Kim ),( Myung Hwan Kim ) 한국산업식품공학회 2017 산업 식품공학 Vol.21 No.3

This study was designed to optimize ethanol extraction process of unfertilized corn silk (UCS) to maximize phytochemical contents and bioactivities. The response surface methodology (RSM) with central composite design (CCD) was employed to obtain the optimal extraction conditions. The influence of ethanol concentration, extraction temperature and extraction time on total polyphenol contents, total flavonoid contents, maysin contents, 2,2-diphenyl-1-picrylhydrazyl(DPPH) radical scavenging activities and tyrosinase inhibition were analyzed. For all dependable variables, the most significant factor was ethanol concentration followed by extraction temperature and extraction time. The following optimum conditions were determined by simultaneous optimization of several responses with the Derringer`s desirability function using the numerical optimization function of the Design-Expert program: ethanol concentration 80.45%, extraction temperature 53.49℃, and extraction time 4.95 h. Under these conditions, the predicted values of total polyphenol contents, total flavonoid contents, maysin contents, DPPH radical scavenging activity and tyrosinase inhibition were 2758.74 μg GAE/g dried sample, 1520.81 μg QUE/g dried sample, 810.26 mg/100g dried sample, 56.86% and 43.49%, respectively, and the overall desirability (D) was 0.74.

Iron loss Prediction Method Based on Transfer Learning for Linear Oscillating Actuator

Ji-Hyeon Lee,Soo-Hwan Park,Moo-Hyun Sung,Ki-O Kim,Ji-won Park,Myung-Seop Lim 한국자기학회 2023 한국자기학회 학술연구발표회 논문개요집 Vol.33 No.2

Enzymatic Preparation and Antioxidant Activities of Protein Hydrolysates from Hemp (Cannabis sativa L.) Seeds

Hyeon-Ji Yoon,Gyu-Hyeon Park,Yu-Rim Lee,Jeong-Min Lee,Hyun-Lim Ahn,Syng-Ook Lee 한국식품영양과학회 2021 한국식품영양과학회 학술대회발표집 Vol.2021 No.10

Hemp (Cannabis sativa L.) seeds have recently been attracting attention as a new high value-added food material due to their excellent nutritional properties, and research on the development of functional food materials and foods using them is actively progressing. The present study was conducted to evaluate the antioxidant properties of hemp seed protein hydrolysates. Protein hydrolysates were prepared from defatted hemp seed powder (HS) by enzymatic hydrolysis using five different proteases (alcalase, bromelain, flavourzyme, neutrase, and papain). As a result of TNBS assay and SDS-PAGE analysis, HS treated with all enzymes except papain showed a high degree of hydrolysis. The total polyphenol content of the protein hydrolysates (<3 kDa) and the RC50 values obtained from two different antioxidant tests showed that the alcalase hydrolysate (HSA) had a relatively high level of antioxidant capacity. In addition, treatment with HSA (100 μg/mL) significantly inhibited linoleic acid peroxidation. These results suggest that hemp seed protein hydrolysates are potential sources of natural antioxidants, and further studies are needed to identify active peptides from HSA.