• 한국지반신소재학회논문집
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• 제16권1호
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• pp.41-52
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• 2017

본 연구에서는 월류에 의한 붕괴 메커니즘의 규명을 위해 모형제방(제방고 0.4~0.8m)과 실물제방(제방고 1.0m)을 대상으로 월류 붕괴실험을 수행하였다. 월류에 의한 제방붕괴는 1단계에서는 월류에 의해 비탈표면에서 세굴이 발생되었으며, 월류의 유속은 완만히 증가되었다. 2단계에서는 붕괴단면이 커지고 유속도 급격히 증가되었다. 3단계에서는 월류에 의해 제방 단면이 완전히 붕괴되고 붕괴면적이 넓어져 유속이 상대적으로 감소되었다. 월류에 의한 제방의 붕괴각(${\theta}$)은 큰 자중, 감소된 전단저항력 및 월류의 흐름에 의한 추가 소류력으로 인해 랭킨토압의 사면붕괴각보다 크게 나타났다. 제방고(H)가 증가될수록 월류에 의한 제방의 월류 유속(${\upsilon}$)이 증가되었으며, 이로 인해 소류력이 추가로 작용되어 제방의 붕괴각(${\theta}$)과 붕괴면적(A)이 함께 증가되었다. 모형실험과 실물실험에 사용된 모래 시료가 동일한 입경크기로 한계세굴유속이 같아 월류 유속변화에 의해 세굴 특성이 지배되는 것으로 나타났다.

• Archives of Plastic Surgery
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• 제34권3호
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• pp.365-370
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• 2007

Purpose: There are many reports about facial bone fractures, but limited to retrospective data of a single hospital. Etiology and severity of the facial bone fracture have been changed and treatment method and materials have been advanced. In order to reflect those changes and provide up-to-date data of the facial bone fractures in Daegu, we gathered the data and analyzed the epidemiologic study. Methods: The medical records of 1058 fractures in 895 patients were gathered from 5 general hospitals in Daegu during last year and these data were analyzed by following parameters: age, sex, place of residence, occupation, cause of injury, time of injury, location of fracture, length of in-hospital stay, time of operation, treatment method, associated injury, complication. Statistical analysis was performed using the Chi-square test. Results: Most commonly involved age group was 20s(26%) and the sex ratio was 3.4:1(male predominance). Fractures were occurred more in unban and white-color workers. Among variable etiology of injury, traffic accident was the most common cause. Time of injury was heighest at 6 to 7 P.M., on Sunday, in July. Locations of fractures were following sequence: nasal, zygoma, mandible, orbit, maxilla. Mean length of in-hospital stay and time of operation after injury were 6.3 and 3.2 days, respectively. In treatment methods, operative methods were dominant than conservative management and general anesthesia were favored than local anesthesia. Associated injuries were noticed in 188 cases(21.2%) and complications were in 94 cases(8.9%) and among them, ocular problem were common. Conclusion: Compared to previous studies, mean age of occurrence was lowered and the etiologies showed age-specific pattern and reflected the change of lifestyle. In young age groups, sports injury, violence were more dominant and the other hand, traffic accident and fall were dominant in older groups.

• The Journal of Korean Physical Therapy
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• 제14권4호
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• pp.172-182
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• 2002

Objectives: We did research in the cause of the Pitchers' injury and their recovery process to make a detailed injury list for the purpose of finding the cause of the Korean professional pitchers' injury and its classification. We drew the conclusion through the results as following. Methods: We posed a question to the 80 pitchers playing in the first team of the eight Korean professional baseball team and analyzed the 62 pieces of question paper except the paper having a mistake. We used SAS/PC statistical package in analyzing the data. Results: In the frequency of the pitchers' shoulder injury in the last three years, the injured of all the players were 61.3$\%$ and the injury free players were 28.7$\%$. The cause of the injury was 45.2$\%$ wrong pitching motion, which was the highest value. For the shape of a pain when injured, the reverberation ache feeling when he is hit in the weight commanded an absolute majority as 19.4$\%$. Those who had muscular pain were 17.7$\%$, which was felt mostly at the pitching motion. The most trouble name of the injured shoulder was bicepstendinitis as 16.1$\%$ while the injury of shoulder joint was the lowest as 1.6$\%$. As the most widely used treatment, 25.8 percent of all the players had taken an electronical thraphy after injury. 14.5 percent of the players who had an injury to the shoulder told that they have an operation and 85 percent of them didn't. As a sort of the operation, a repairing of labrum was 44.4 percent, which is the highest value and the 77.8 percent pitchers are performing a normal pitching through rehabilitation after the operation and 22.2 percent of them are undergoing rehabilitation training. Conclusion: The research have shown that the main cause of the injury, concerning the Korean professional pitchers throwing lots of ball in both matches and practices, is overuse syndrome, bad mechanism, muscle weakness and instability of balance. I think that the role of trainer, physical therapy, and team physician taking charge of the players' injury must learn physical test method by heart exactly to check up the state of the injury definitely at the initial phase. Moreover, when the cause of the injury part after a close examination is discovered, the scientific and good surgery is essential to the rehabilitation success and making a classification of shoulder instability is useful to make a operation plan as well as the players' rehabilitation, treatment.

• 한국콘텐츠학회논문지
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• 제15권2호
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• pp.377-392
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• 2015

최근 들어 빅 데이터의 영향력이 증가하면서 데이터 중심의 사회로 급변하고 있다. 동시에 데이터의 수집, 관리 및 활용의 문제가 중요한 이슈로 대두되고 있다. 더욱이 빅 데이터는 가공과 분석에 따라 상황인식, 의사결정, 그리고 미래 예측을 가능하게 하는 영역까지 확대되고 있다. 심지어 재난관리에 있어서도 민간 및 공공 영역에서 만들어지는 엄청난 양의 정형 및 비정형 데이터들을 의미 있는 정보로 가공해내는 것이 무엇보다 중요하다. 실효성 있는 재난관리를 위해 공공과 민간 데이터가 동시에 연계 분석되어야 한다는 것이다. 그래서 본 연구에서는 문헌조사와 사례 연구 통해 국가 재난관리를 위한 효율적인 빅 데이터 활용 정책방안을 제안하고자 하였다. 연구 결과 국내 재난관리의 빅 데이터 활용 촉진 방안에 대한 공공 및 민간 부문의 역할을 각각 도출하였다. 공공과 민간 영역에서 공통적으로 추진해야 할 정책과제는 재난관련 빅 데이터의 공개 및 공유, 기술 및 인프라의 확충, 법 및 제도적 정비, 소셜 네트워크 서비스를 활용한 재난 정보전달 시스템의 구축, 빅데이터 전문 인력의 양성으로 나타났다.

• 한국응용곤충학회지
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• 제46권3호
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• pp.415-423
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• 2007

화학적방제와 생물적방제를 상호보완적으로 사용하여 해충을 방제하기 위해 천적에 대한 저독성 약제와 천적의 안전방사시기를 설정하였다. 고추와 착색단고추에 등록되어 있는 52종(살충제 33종, 살균제 19종)의 살충 살균제를 충체침지처리법과 잎침지처리법으로 독성을 평가하였다. 살충제의 충체침지처리 후 애꽃노린재 성충에 대한 저독성약제는 milbemectin유제 등 14종이었으며, 잎침지처리법에 의한 저독성약제는 12종이었다. 처리한 살균제 19종은 모두 천적에 대해 저독성을 보였다. 약제살포 후 1일에 안전방사 가능한 약제는 pyraclofos, methomyl, thiodicarb, esfenvalerate bifenthrin, alpha-cyrermethrin, etofenprox, fenvalerate, imidacloprid, acetamiprid, abamectin, emamectin benzoate, spinosad, indoxacarb등 14종이었으며, 네오니코티노이드계 농약은 잔류독성이 길게 나타났다.

• 약학회지
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• 제56권5호
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• pp.288-292
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• 2012

The aim of the paper is to ameliorate old research methods of Korean Pharmaceutical Codex to adjust the newest scientistic level which is necessary to maintain quality of medical supplies effectively. After reviewing result of Establishment of Dissolution Specifications for Generic Drugs in Korea Pharmaceutical Codex Monograph, there are two items chosen for the methods - Establishment of Dissolution Specifications for Generic Drugs in Korea Pharmaceutical Codex Monograph which KFDA researched in 2010, arranged new measuring standard by having an experiment to set measuring method after obtaining each item. According to the result, The experiment includes a measuring method of two items; Nafronyl Oxalate Capsules, and Ticlopidine Hydrochloride Tablets. The research is ameliorated by research methods through several experiments such as High Performance Liquid Chromatography validation, preparing items, implement of trial-experiment and authentic experiment, and experiment on measuring method of regulations of Korea Pharmaceutical Codex. The experiments are taken opinions of experts in KFDA into consideration and wrote out a report of the new measuring method on each last item. The report is combined as each two experiment sections of analyzing method to maintain the quality on the basis of the research in 2010 on setting of dissolution specifications for oral solid dosage forms. The result of measuring method of medical supplies through modernizing trial method of oral solid dosage forms is available to be accurate. In conclusion, this study could contribute to promotion of public health by organizing a basis for safe and high quality of medical supplies in domestic market.

• 한국산학기술학회논문지
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• 제10권8호
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• pp.2103-2109
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• 2009

균형성과표는 전통적인 기업의 성과 관리 체계인 단순한 재무적 지표 중심의 평가에서 벗어나 기업의 미래와 목표 달성을 위한 핵심적인 관점들인 재무 관점, 고객 관점, 내부프로세스 관점, 학습 및 성장 관점 등에 대해 일관된 측정 수단을 통해 균형 있게 측정하고 관리하고자 하는 기업의 성과 측정 수단의 하나이다. 균형성과표의 도입은 도입 자체의 효과와 아울러 그 선후관계 존재 여부를 파악하는 것 역시 경영 전략 수립에 있어 중요한 시사점이 된다. 따라서 본 연구는 균형성과표 도입의 효과가 있는지, 그리고 그 효과간에 시차적(time lag) 선후관계가 존재하는지 연구하였다. 연구결과 균형성과표 도입은 기업의 학습과 성장 관점 영역, 내부프로세스 관점 영역, 재무 관점 영역에 긍정적 효과를 주는 것으로 나타났으며 재무적 성과의 경우엔 그 효과가 더 긴 것으로 나타났다. 한편 기업성과 지표로서의 균형성과표상의 관점을 선행 지표와 후행지표로 구분하여 두 지표간에 시차 상관관계가 존재하는 지를 분석한 결과에 의하면 균형성과표 도입에 따라 내부비즈니스 프로세스가 우선적으로 개선되고 이러한 효과는 곧 재무적 성과에 긍정적 영향을 미치는 것으로 판단되었다.

• Pediatric Gastroenterology, Hepatology & Nutrition
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• 제18권1호
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• pp.10-16
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• 2015

Purpose: The aim of this study is to investigate the changing prevalence rate of Helicobacter pylori infection in children, of different age groups, with recurrent abdominal pain over a 10-year period. Methods: Children with recurrent abdominal pain who visited the pediatric outpatient clinic at university hospital were screened for H. pylori. Children were divided into 3 age categories of 4-5, 6-11, and 12-16 years. To study the changes in the annual prevalence rates of H. pylori infection, the study period was divided into 3 time periods: 2004-2007, 2008-2010, and 2011-2014. Urea breath test was performed for all children aged 4-16 years, with a cut-off value of 4.0‰ for children aged ${\geq}6$ years and 7‰ for children aged <6 years. Results: A total of 2,530 children (1,191 boys) with a mean age of $10.0{\pm}3.0years$ (range, 4.0-16.9 years) were included in the study. The total prevalence of H. pylori infection was 7.4% (187/2,530). The prevalence rate of H. pylori infection in children with recurrent abdominal pain was 8.0% (70/873) in 2004-2007, 7.7% (51/666) in 2008-2010, and 6.7% (66/991) in the 2011-2014. Nevertheless, a significant difference was observed in the prevalence rate between children <12 years old and ${\geq}12$ years of age (p=0.018). Conclusion: The prevalence of H. pylori infection in Korean children with recurrent abdominal pain was 7.4%, showing no significant decrease in the last 11 years; however, the prevalence rate in children <12 years old was significantly lower than that in those ${\geq}12$ years old.

• Archives of Reconstructive Microsurgery
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• 제19권2호
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• pp.97-100
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• 2010

Purpose: Epidermolysis bullosa is a rare genetic disease, characterized by the presence of extremely fragile skin and formation of recurrent blister resulting from even a minor mechanical injury. Squamous cell carcinoma (SCC) is recognized as a complication of the chronic scarring associated with dystrophic epidermolysis bullosa (DEB). When a soft tissue defect happens in a patient with epidermolysis bullosa, it is difficult to cover it with a skin graft or a flap. We describe the successful use of a pedicled deep inferior epigastric perforator flap for the reconstruction of SCC associated with DEB in the groin. Methods: A 29-year-old man diagnosed with DEB at birth sustained an ulcer increasing in the right groin for the last 7 months. Under general anesthesia, the mass lesion and lymph nodes were removed and the resulting defect was covered with a pedicled deep inferior epigastric perforator flap. Results: The flap survived completely and his postoperative course was uneventful. Histopathological examination revealed a SCC in the right groin and malignant tumor cells in the removed lymph nodes as well. Additional positron emission tomogram showed a malignant lesion in the ileocecal area with regional lymph node metastasis. The patient was referred to an oncologist for chemotheraphy, but the patient refused to take it. During a 4-month follow-up period, there was no recurrence in the right groin. Conclusion: We suggest that perforator flaps can be considered as a reliable alternative for the reconstruction of soft tissue defects in a patient with DEB.

• 자원리싸이클링
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• 제26권4호
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• pp.50-55
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• 2017

복잡한 모체를 갖는 시료에 존재하는 미량의 원소들은 모체방해효과로 인하여 분석이 어렵다. 따라서 시료모체로부터 미량의 원소들을 분리해서 분석할 수 있다면 그 방해 요인을 줄일 수 있어 분석에 많은 도움이 된다. 시료모체와 미량의 원소들을 분리하기 위하여 인듐 수산화물($In(OH)_3$)을 이용하여 시료 내에 존재하는 미량의 원소들을 공동침전시킴으로서 분석물질을 분리시킨 후에 유도 결합 플라즈마-원자 방출 분광법을 이용하여 분석하는 방법에 대한 연구를 하였다. 이 연구에서는 공동침전의 발생과 회수율을 높일 수 있는 최적의 조건을 실험을 통해 설정하였다. 공동침전물을 석영섬유필터를 사용하여 걸러내고, 공침이 발생하는 시료의 pH를 9.5로 조정하였다. 또한 필터의 침전물을 ICP-AES로 측정하기 위해 질산 30% 용액에 1분 동안 담궈 침전물을 녹였고, 침전물이 녹은 질산용액은 온도변화 없이 농축을 진행하는 최적의 조건을 설정하였다. 이 최적조건을 소금시료에 적용하여 분석한 결과, 신안 증도에서의 소금에서는 중금속이 거의 검출 되지 않았지만 전남 영광 소금의 경우 카드뮴을 제외하고 여러개의 중금속이 미량 검출되었다.