• 한국빅데이터학회지
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• 제8권1호
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• pp.49-59
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• 2023

제조업의 안전보건 기준은 다양한 항목이 존재하지만, 질병 재해자 기준에서 업무상 질병과 근골격계 질환으로 나눌 수 있다. 이 중 근골격계 질환은 제조업에서 가장 많이 발생하며, 나아가서 제조 현장의 노동생산성감소 및 경쟁력 약화까지 유발할 수 있어서 이를 사전에 확인할 수 있는 시스템이 필요한 실정이다. 본 논문에서는 제조업 노동자의 근골격계 유해 요인을 검출하기 위하여 근골격계 부담작업 요인 분석 데이터 속성, 유해 요인 작업자세, 관절 키포인트를 정의하고 인공지능 학습용 데이터를 구축하였다. 구축한 데이터의 유효성을 판단하기 위해서 YOLO, Dite-HRNet, EfficientNet 등의 AI 알고리즘을 활용하여 학습하고 검증하였다. 실험 결과 사람 탐지 정확도는 99%, 탐지된 사람의 관절 위치 추론 정확도는 @AP0.5 88%, 추론된 관절 위치를 종합하여 자세를 평가한 정확도는 LEGS 72.2%, NECT 85.7%, TRUNK 81.9%, UPPERARM 79.8%, LOWERARM 92.7%를 도출하였으며, 추가로 딥러닝 기반의 근골격계 질병을 예방할 수 있는 연구에 필요한 요소를 고찰하였다.

• 스마트미디어저널
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• 제13권3호
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• pp.18-26
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• 2024

노면 모니터링은 노면의 함몰 정도 및 크랙 감지와 같은 위험 요소 관리를 통해 도로 환경의 안전성을 유지하는 필수적인 과정이다. 고성능 2D 레이저 센서를 탑재한 자율주행 기반 UGV를 활용한 정밀 측정이 가능하지만, 고성능 센서의 에너지 소모량 증가로 인해 배터리 용량에 대한 한계가 있다. 본 논문에서는 UGV에서 효율적인 노면 모니터링을 위한 퓨전 센서 시스템을 제안한다. 제안된 퓨전 센서 시스템은 카메라를 통한 칼라 정보와 선레이저 센서를 통한 깊이 정보를 결합하여 노면 모니터링의 정밀한 변위 탐지를 가능하게 한다. 또한 카메라 센서를 이용해 모니터링 대상의 탐지 여부에 따라 선레이저 센서 스캔 주파수를 동적으로 제어하는 동적 샘플링 알고리즘을 적용함으로써 불필요한 에너지 소모를 절감한다. 제안된 퓨전 센서 시스템에서의 평균 소비전력 모델을 제시하고 다양한 미션 환경의 크랙 분포 및 센서 특성을 고려하여 에너지 효율성을 분석한다. 성능 분석 결과, 선레이저 센서의 Active 상태 소비 전력이 Saving 상태의 2배이고, λ=10, µ=10인 환경에서 고정 샘플링 기법에 비해 전력 소비 효율이 13.3% 향상됨을 확인하였다.

• 대한안전경영과학회지
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• 제15권3호
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• pp.37-50
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• 2013

It is not an exaggeration to say that modern chemicals take a leading place in our life, and people live with the chemicals, having a huge impact on their daily life. The chemical industry in South Korea, ranked seventh in the world, is one of the key industries that are forming greater part of Korean economy. The actual state of the chemical industries, however, is that over 14 tons of hazardous chemicals are being discharged annually and threaten people's lives with a lack of knowledge of its potential danger. In this way, not only beneficial to us, some of these substances, All chemicals, but also present a threat fundamentally our living environment to hazards to human health and the environment, accidents such chemicals, unlike accidents general understanding the scale of damage and propagation velocity has a complex very difficult risk profile, that can occur during deployment of an accident type is also very diverse. Is the actual situation of public concern against harmful chemicals management's is amplified by the chemical accident in the wake such accidents, government and corporate and reactive system and management system prior to the chemical accident the need for communication to exchange ideas with each other between residents, providing information is important. Therefore, the government departments and corporations, which manage variety of chemicals, ought to contribute toward a development of national security by rigid control over the Hazardous chemicals.

• 한국항해항만학회:학술대회논문집
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• 한국항해항만학회 2010년도 추계학술대회
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• pp.144-145
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• 2010

IMO에서 개발 중인 e-Navigation 전략 이행 계획에는 VTM(Vessel Traffic Management)을 핵심 요소들 중 하나로 포함시키고 있다. E-Navigation이 지향하는 VTM은 현재 VTS보다 다양하고 정확한 항행 정보를 선박에 제공하고 적극적 관제를 통하여 안전하고 효율적인 해상교통 흐름을 유지시키는 개념을 갖고 있다. IMO에서 계획하고 있는 VTM 기능을 구현하기 위해서는 VTS 운용 요원인 관제사들의 역할 및 능력이 VTM의 성공 여부를 좌우한다. 따라서, VTM의 구현을 위해서는 VTM에 있어서 관제사들의 역할과 관제사들의 VTM 수행을 위한 자질 능력 향상을 위한 교육 훈련 방안이 함께 논의되어야 한다. 본 연구에서는 e-Navigation 환경 하에서 VTS 관제사가 안전하고 효율적인 VTM을 수행할 수 있도록 관제사를 지원하는 관제사 의사 결정 지원 시스템에 대한 개념 설계를 수행하였다. 본 논문에서는 관제사 의사결정 지원 시스템의 개념, 주요 기능, 구성 요소 및 이를 구현하기 위한 요소 기술들에 대해 기술하였다.

• 산업경영시스템학회지
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• 제39권4호
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• pp.137-146
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• 2016

In recent years, business environment is faced with multi uncertainty that have not been suffered in the past. As supply chain is getting expanded and longer, the flow of information, material and production is also being complicated. It is well known that development service industry using application software has various uncertainty in random events such as supply and demand fluctuation of developer's capcity, project effective date after winning a contract, manpower cost (or revenue), subcontract cost (or purchase), and overrun due to developer's skill-level. This study intends to social contribution through attempts to optimize enterprise's goal by supply chain management platform to balance demand and supply and stochastic programming which is basically applied in order to solve uncertainty considering economical and operational risk at solution supplier. In Particular, this study emphasizes to determine allocation of internal and external manpower of developers using S&OP (Sales & Operations Planning) as monthly resource input has constraint on resource's capability that shared in industry or task. This study is to verify how Stochastic Programming such as Markowitz's MV (Mean Variance) model or 2-Stage Recourse Model is flexible and efficient than Deterministic Programming in software enterprise field by experiment with process and data from service industry which is manufacturing software and performing projects. In addition, this study is also to analysis how profit and labor input plan according to scope of uncertainty is changed based on Pareto Optimal, then lastly it is to enumerate limitation of the study extracted drawback which can be happened in real business environment and to contribute direction in future research considering another applicable methodology.

• IMMUNE NETWORK
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• 제5권1호
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• pp.1-10
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• 2005

Background: Chronic infection with hepatitis B virus (HBV) affects about 350 million people worldwide, which have a high risk of development of cirrhosis and hepatocellular carcinoma. Treatment of chronic HBV infection relies on IFN-${\alpha}$ or lamivudine. However, interferon-${\alpha}$ is effective in only about 30% of patients. Also, the occurrence of escape mutations limits the usage of lamivudine. Therefore, the development and evaluation of new compounds or approaches are urgent. Methods: We comparatively evaluated DNA and adenoviral vaccines expressing HBV antigens, either alone or in combined regimens, for their ability to elicit Th1-type immune responses in Balb / c mice which are believed to be suited to resolve HBV infection. The vaccines were tested with or without a genetically engineered IL-12 (mIL-12 N220L) which was shown to enhance sustained Th1-type immune responses in HCV E2 DNA vaccine. Results: Considering the Th1-type cytokine secretion and the IgG2a titers, the strongest Th1-type immune response was elicited by the DNA prime-adenovirus boost regimen in the presence of mIL-12 N220L. In addition, the codelivery of mIL-12 N220L modulated differentially the immune responses by different vaccination regimens. Conclusion: Our results suggest that the DNA prime-adenovirus boost regimen in the presence of mIL-12 N220L may be the best candidate for HBV vaccine therapy of the regimens tested in this study and will be worthwhile being evaluated in chronic HBV patients.

• 보건행정학회지
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• 제12권1호
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• pp.102-124
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• 2002

To find out more efficient ways of implementing health promotion programs and to determine the factors affecting the results of various interventions, we reviewed 73 articles un the effectiveness of health promotion programs. These include the papers on the smoking, alcohol, drug abuse, nutrition(obesity) and stress management etc. Specific interventions evaluated in this review are education based on the lecture or video shows, health-related event activities, modifications of policy or the environment, health risk appraisal etc. By using KIHASA Line of Korea Institute of Health and Social Affairs, National Congress Library Database MEDLINE, we identified 201 articles published from 1980 to Jun. 1979 and finally selected 73 papers which contain the implementation process, and result of each program. The factors used in the analysis of the programs are (1) characteristics of participants (2) interventions evaluated (3) research design (4) length of programs and evacuation point (7) outcome indices (6) effect of program evaluated by each author. The study results did not prove positive effect of education based on lectures or video shows etc. Rather, it was suggested that lecture-based education has negative effect on the result. Event activity such as contest or health festivals has positive effect, and policy change or environmental change is closely related to the event activity. Also, the result shows that the overall effect of programs fur the students is less than that of the programs for the others. The programs conducted over, 1-year are mere likely to have positive outcomes than shorter ones. And, the outcomes of the programs with controlled research design such as experimental or quasi-experimental study tend to be evaluated inferiorly to those with non-experimental design.

• 대한치과의사협회지
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• 제53권10호
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• pp.678-687
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• 2015

흡인성 폐렴의 예방을 위해서는 구강위생관리를 철저하게 실천하는 것이 매우 중요하므로 적절한 관리요령이 병원과 요양시설에 보급되어야 할 것이다. 잘못된 구강위생관리 방법이 행해진다면 그 자체가 흡인성 폐렴의 원인이 될 수 있기 때문이다. 의료 간호의 현장에서 효율적이고 효과적인 구강위생관리를 위해서는 이를 수행할 수 있는 치과의사와 치과위생사의 개입이 필수적이다. 노인요양시설의 치과촉탁의 제도의 시행이 가시화되고 있는 시점에서 우리 치과계에서는 위험성이 적으면서 구강위생과 구강기능을 지킬 수 있는 올바른 방법을 제안해야 하고, 물을 사용하지 않는 전문적 구강위생관리방법이야말로 오연의 위험을 감소시키면서 보다 안전하고 환자에 부담이 적은 전문적 구강위생관리 방법이라 사료된다. 쉽게 실천할 수 있는 방법이므로 앞으로 노인요양시설의 치과촉탁의 제도 시행 시 치과위생사, 치과의사에게 진정으로 도움이 되기를 바란다.

• 한국사회복지학회:학술대회논문집
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• 한국사회복지학회 2002년도 국제학술대회 자료집
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• pp.3-19
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• 2002

The problems and needs of families in Hong Kong are becoming more complex. Traditional family structures and functions are rapidly eroding. Moreover, family problems are further exacerbated by a growing number of socio-economic issues including rising divorce rates and extra-marital affairs. continuous family reunion migration from Mainland China, emotional and financial cost of caring for the older people and the changing economy which has pushed more families into hardship. In effect, more and more families are becoming vulnerable to risk. Traditional family services in Hong Kong are varied in mode, operation and provision, often overlapping in service boundaries with other family-oriented programs. In many instances, family service centers are stretched far beyond their capacity. As a consequence, they become too reactive, remedial and casework dominated. The University of Hong Kong Consultant Team recommended that family service programs have to protect vulnerable families and strengthen family capacities to promote maximum independence. The direction of family services is summarized as: strengthening families; child-centered, family-focused and community-based. New integrative family service centers aim at attaining the principles of promoting accessibility to users with minimum physical, psychological and administrative barriers; early identification of needs and intervention before the further deterioration of problems; integration of services cutting across program boundaries, and partnership between service providers to achieve efficient and effective use of scarce resources. Under the new model, multi-skilled teams can respond more proactively to a wide range of social needs, rather than addressing needs in isolation. To demonstrate the effectiveness of the new model, the consultant team has been commissioned by the government to evaluate the performance of these two-year pilot projects. More importantly, a coherent and family-friendly social policy should be formulated to strengthen family capacity against family-related problems.

• Archives of Reconstructive Microsurgery
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• 제8권1호
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• pp.22-27
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• 1999

While the conventional end-to-end anastomotic technique is accepted as 'the golden standard' for microvascular anastomosis, it is time-consuming and tedious. In an effort to offer faster and safer ways of performing microvascular anastomoses, numerous anastomotic techniques have been proposed, but further refinements in microvascular techniques are still necessary. A 'continuous suture with interrupted knot' technique was devised for faster and safer anastomosis. It has been successfully used in microanastomoses of both artery and vein for free tissue transfer. It is a combination of the interrupted suturing technique and the continuous suturing technique. First, a continuous suture is made with the size of loop decreasing in order, and then the sutures are tied individually from the first loop to the last one as in the conventional interrupted suturing technique. It was applied clinically to fourteen patients over the past ten months and found to be a highly efficient technique that satisfied our needs. This 'continuous suture with interrupted knot' technique has several advantages over other techniques : The operative time is reduced comparing conventional interrupted suture technique. By delaying the tie and with the vessel walls kept separated, the risk of through-stitch can be reduced. Tying all the sutures at one time not only speed up the procedures, but also reduced the surgeon's fatigue. In addition, it has no problem of anastomotic stenosis which is a disadvantage of continuous suture technique. This technique proved to be faster and safer, and has patency equal to that of the conventional end-to-end anastomosis. It is of great help to the surgeon in reducing operative time, especially in clinical situations when many anastomoses are required, or lengthy grafting procedures are undertaken.