• 대한전기학회:학술대회논문집
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• 대한전기학회 2001년도 하계학술대회 논문집 D
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• pp.2564-2566
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• 2001

The reliability of EIC(Electricity, Instrumentation and Computer) systems in hot rolling mill is very important in order to maintain stable production. Signals obtained from sensors and control system should be analyzed to monitor the condition of down coiler in hot rolling mill. We develop a monitoring system of down coiler which is composed of three parts : (1) data acquisition and MMI, (2) signal processing and analyzing, and (3) automatic data saving. Also it is designed to enable to inform users the abnormal conditions of down coiler. This developed system is expected to make it possible to reduce long downtime, secure high facility precision, and maintain high control levels.

• 대한임베디드공학회논문지
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• 제6권2호
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• pp.86-92
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• 2011

In this paper, we proposed a level 2 middleware with common services for controlling steel plants, which is named POSMOS. POSMOS supports eight middleware services currently, but, this paper described in detail two representative services of the common services: file service and external communication service and their respective measured performance. In the experiment section, we described the performance of the two representative services and a case using our middleware which shows better response time than the existing commercial middleware by about 32%.

• Journal of Trauma and Injury
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• 제34권1호
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• pp.61-65
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• 2021

A Morel-Lavallée lesion is a closed degloving injury caused by traumatic separation of the skin and subcutaneous tissue from the underlying fascia. However, since physicians tend to focus on treating the bone fracture, hemodynamic instability accompanying a Morel-Lavallée lesion can sometimes be overlooked. We report the case of a hemodynamically unstable 73-year-old man who had a Morel-Lavallée lesion of the thigh, but no femur fracture. Angiography showed active bleeding from the muscular branch of the right deep femoral artery, which was then successfully embolized.

• Journal of Trauma and Injury
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• 제35권1호
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• pp.51-55
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• 2022

Pelvic ring injuries have high mortality and morbidity rates, and they are difficult to treat because accompanying injuries to the pelvic organs, genitourinary organs, and neurovascular tissues are common. Genitourinary injuries are common comorbid injuries that have been reported to occur in 5% to 6% of all pelvic ring injuries. However, these injuries usually occur simultaneously with the pelvic ring injury, whereas relatively little research has dealt with genitourinary injuries that occur after treatment of a pelvic ring injury. To the best of our knowledge, only three cases of delayed bladder perforation due to screw loosening after symphyseal plate fixation in anterior pelvic ring injury have been reported worldwide, and no such cases have yet been reported in Korea. Since the authors experienced this very rare complication after pelvic ring surgery, we report this case along with a literature review.

• 한국게임학회 논문지
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• 제2권2호
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• pp.60-65
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• 2002

오늘날 컴퓨터 게임의 대부분은 캐릭터의 행동 유형을 게임 로직에서 미리 정의된 게임 로직이나 초기에 설정된 움직임에 대한 정보를 이용하여 제어한다. 게임 개발자들은 더 풍부하고 다양한 내용을 담고 있고 뛰어난 환경 판단 및 대처 능력 등을 갖는 게임을 개발하기를 원하기 때문에 이러한 방식은 한계에 직면하게 된다. 본 논문에서는 지능적이고 게임 플레이어로 하여금 다양한 흥미를 유발할 수 있는 컴퓨터 게임의 개발을 위해서 유전자 알고리즘을 사용한 게임 모델을 구성하였다 학습 능력에 기초한 유전자 알고리즘을 사용함으로써 변화 가능성과 동적인 게임 환경을 고려하면서 계속적으로 진화하는 캐릭터를 만들 수 있을 것이다. 실시간 게임은 제안한 시스템의 실행과 한계를 연구하기 위해 실행되었다.

• 한국통신학회논문지
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• 제31권9A호
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• pp.920-927
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• 2006

Artillery projectile에 장착될 PCM 텔레메트리 엔코더 개발에는 크게 세 가지 고려사항이 요구된다. 첫 번째는 샘플링률과 데이터 전송률과 같은 성능에 대한 것이다. 두 번째는 제한된 설치 공간에 따른 크기에 대한 것이고 마지막은 munition의 제한된 전원 공급에 따른 전력 소모에 대한 고려이다. 이러한 세 가지 조건에 맞는 해결책은 한 개의 칩으로 구현하는 것이다. 상용인 TMS320F2812 DSP 칩을 이용해서 프레임당 16채널 아날로그 데이터, 14채널 디지털 데이터와 2개의 프레임 동기 데이터를 랜더마이즈시켜 10Mbps 전송률로 송신하는 30채널 PCM 엔코더를 설계 구현하였다.

• 한국의류학회지
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• 제20권2호
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• pp.390-397
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• 1996

The effects of the mixture of surfactants on the removal of triolein applied to cotton and polyester fabrics were studied. The sunactants which were usually formulated to the Iriundry detergents, such as sodium dodecyl sulfonate (LAS), sodium lauryl sulfate (AS), $\alpha$-olefin sulfonate (AOS, C=14), sodium laurethoxy sulfate (AES, EO=3) and lauryl ethoxylate (AE, EO=7) were used. Washing was done at 40'C, 60"C, 80'c and the surfactant concentration was 0.05%. Backscattered electron imaging was made to study the location of triolein in the yarns. Triolein was removed easily from polyester than cotton fabrics.01eic acid added triolein wa9 removed greater than triolein only, except in AE solutions. In AE solutions, the removal of triolein was increased as the tremperature went higher and the increasing rate of the removal of triolein only was greater than that of oleic acid added triolein. In the result, more triolein was removed from triolein only than from oleic acid added triolein at 80t When the other surfactant was added to LAS, AES was the best to cotton fabrics, AOS was to polyester fabrics. Triolein was located in the lumen and grooves of the fibers and the deeper interfiber spaces. Triolein did not make thin film arround the cotton fiber in the surface, but polyester fibers. These are the main reason why the removal of triolein was difficult from cotton fabrics.rics.

• 한국수산과학회지
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• 제43권5호
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• pp.489-494
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• 2010

The nutritional demand of oyster larva (Crassostrea gigas) were investigated to determine the optimal culture conditions and improve micro-algae utilization. Changes in nutrients and shell growth were examined in fed and 96-h (48 h in late umbone stage) oysters at four larval stages. Shell growth increased significantly in D shape larvae, regardless of feeding variations. No growth was observed in starved larvae, except in shell length of umbone (to 11.9 ${\mu}m$). Fed larvae showed significant growth in all development stages (P < 0.05). During starvation, lipids were most significantly decreased in all larval stages (by 76.8%, 68.3%, 76.3%, and 40.3%, respectively), followed by protein (41.1%, 31.1%, 33.1%, 16.7%) and nitrogen-free extracts (40.8%, 24.3%, 36.9%, 20.1%), Gross energy (kcal/g) consumption in each larval stage was 49.6%, 35.1%, 39.1%, and 20.4%, respectively. Our results indicate that lipids are the most important energy source during the early larval development stages of C. gigas.

• Animal cells and systems
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• 제15권3호
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• pp.243-249
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• 2011

The genetic diversity and population history of the Asian shore crab, Hemigrapsus sanguineus, were investigated with a nucleotide sequence analysis of 536 base pairs (bp) of the mitochondrial cytochrome c oxidase subunit I gene (COI) in 111 samples collected from four populations in Korea and one in Japan. In total, 28 haplotypes were defined by 27 variable nucleotide sites in the COI region examined. The observed haplotypes had a shallow haplotype genealogy and no geographical associations. Most of the populations had high haplotype diversity (0.656-0.788) and low nucleotide diversity (0.00165-0.00244), and significant negative values for Fu's $F_S$, suggesting rapid and recent population growth from an ancestral population and sudden population expansion. The pairwise fixation indices ($F_{ST}$) estimated with the exact test and the migration rates indicate that substantial gene flow occurs among these populations as a result of sea currents, except between the Yellow Sea coast of Korea (BUA) and the Pacific Ocean coast of Japan (JPA). These two populations (BUA and JPA) showed significant genetic differentiation and low migration rate.

• Fisheries and Aquatic Sciences
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• 제15권1호
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• pp.49-56
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• 2012

Genetic variation in the Asian shore crab Hemigrapsus sanguineus was determined from partial mitochondrial DNA (mtDNA) sequences of the cytochrome b (Cytb) gene. Samples included 143 crabs from six localities along three coastlines in South Korea. A nucleotide sequence analysis revealed 38 variable sites in a 470-bp sequence, which defined 37 haplotypes. The haplotypes were not associated geographically and had a shallow genealogy. Pairwise $F_{ST}$ tests and a two-dimensional scaling analysis revealed no significant genetic differentiation among most of the populations. The low pairwise comparison values, but significant genetic differentiation of a northeastern population from all other populations, might have been influenced by a restriction in gene flow caused by hydrographic conditions such as ocean boundaries. The high haplotype diversity, low nucleotide diversity, and time since H. sanguineus expansion in Korean coastal waters indicate rapid population growth and a recent, sudden expansion in the Late Pleistocene.