• 산업공학
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• 제21권4호
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• pp.444-455
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• 2008

In the present manufacturing environment, the appropriate decision making strategy has a significance and it should count on the fast-changing demand of customers. This research derives the optimal levels of the decision variables affecting the inventory related performance in multi-stage supply chain by using simulation and genetic algorithm. Simulation model helps analyze the customer service level of the supply chain computationally and the genetic algorithm searches the optimal solutions by interaction with the simulation model. Our experiments show that the integration approach of the genetic algorithm with a simulation model is effective in finding the solutions that achieve predefined target service levels.

• 대한산업공학회지
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• 제40권2호
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• pp.151-162
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• 2014

This study proposes an optimization model to plan the patient distribution and medical resource allocation considering the diverse characteristics of disaster. For reflecting the particularity of disaster response, we configured a few scenarios such as availability of emergency surgery of non-major medical staff and the change in number of patients estimated reflecting the uncertainty, urgency and convergence of disaster. And we finally tested the effects of the scenarios' combination on the objective function defined as maximum number of survival patients. Our experimental results are expected to highlight the significance of the proposed model as well as the applicability of scenarios under disaster response.

• 대한인간공학회지
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• 제31권6호
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• pp.749-756
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• 2012

Objective: This study was performed to investigate the prevalence of musculoskeletal disorders of traditional Korean instrument player using a variety of traditional classical instruments: Gayageum, Geomungo, Ajaeng, Haegeum, Daegeum, Piri and Samul instruments. Background: A large percentage of instrument players have suffered from the musculoskeletal pain of each body parts. However, there is no research on the prevalence of musculoskeletal disorders of traditional Korean musical instrument players. Method: Through the focus group interview, a questionnaire to investigate musculoskeletal disorders was developed. The questionnaire consisted of four parts: demographic factors, performance factors, musculoskeletal disorders symptoms, musculoskeletal disorder experience. For the survey, 118 expert players participated. The data from the survey were analyzed by correlation analysis and chi-square analysis. Results: The symptoms of musculoskeletal disorders and the severe pain from musculoskeletal disorders were observed at neck, shoulder, back and knee. The musculoskeletal experience was statistically related to the factor of body height in Gayageum and Geomungo. In addition, the musculoskeletal experience in Geomungo was related to age and career. However, the musculoskeletal experience in Ajaeng and Haegeum was only related to the factor of hobby. The musculoskeletal experience in Daegeum and Piri was related to stretching. In addition, there was a statistical significance between the musculoskeletal experience and sex in Daegum. In Samul instruments, the statistical significance was observed at age, BMI, career and stretching. Conclusion: The symptoms of playing-related musculoskeletal disorders of traditional Korean musical players were prevalently observed at neck, shoulder, back and knee. In addition, these symptoms were related to the various demographic factors such as age, body height, BMI, career, sex, hobby and stretching. Application: The results of this study can be used as the preliminary data for preventing the musculoskeletal injuries of traditional Korean musical instrument players.

• 한국항만경제학회지
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• 제27권2호
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• pp.27-38
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• 2011

본고는 우리나라 항만별 승용차 수출행태의 차이를 밝히는데 목적을 둔다. 수출은 미국의 경기와 미국 달러의 일본 엔화표시 환율의 함수로 한다. 경제이론에 의하면 미국 경기의 상승은 우리나라 항만의 승용차 수출의 증가로 나타나며, 엔화 환율의 상승은 엔화 가치하락에 따른 일본 승용차의 가격경쟁력 상승으로 우리의 승용차 수출이 감소한다. 먼저 항만별 수출모형의 안정성을 GPH 기법을 이용하여 모형의 안정성을 확보한 후 오차수정계수를 도출하여 항만간 계수의 차이가 크며, 군산항에서 가장 작고 울산항에서 가장 크다는 것을 밝힌다. OLS를 이용한 모형의 추정을 통해 3개 항만의 수출행태가 경제이론과 일치한다는 것을 보인다. 그리고 예측오차의 분산분해를 통해 항구별 승용차 수출이 경기와 환율에 대해 내생변수라는 것과 역사적 분해를 통해 경기쇼크가 3개 항만 수출변동의 주요 변수라는 것을 밝힌다.

• 산업경영시스템학회지
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• 제6권8호
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• pp.13-19
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• 1983

In this paper an attempt is tried to answer the following questions : What does ergonomics have to do with work satisfaction\ulcorner Is there more satisfaction when ergonomics have applied in the design of work\ulcorner Is ergonomics important for work satisfaction\ulcorner This paper is started by defining the concept of satisfaction and ergonomics which is still at a comparatively early stage of development, and the effect of this in practice is that the majority of ergonomics assignments involve research. And then there discussions difficult theories of motivation and satisfaction such as Maslow' theory and Horzberg's theory. And in this paper I'll try to formulate the logical consequences of those theories for the relation between ergonomics and satisfaction. Finally I'll conclude with some ideas about the significance of ergonomics satisfaction. The level of satisfaction experienced with one's work is a complete function of the degree to which different values connected with work and with its concomitant results are attained, the opportunities perceived for the attainment of these values, the relative advantages and disadvantages of the work situation compared with that of other people, and personality and cultural determinants. As for ergonomics, the ergonomist's comprehension will need in future to encompass more of the emotional, attitudinal and motivational facts of working people. Ergonomically - designed work will not produce high degrees of satisfaction, but absence of ergonomics in design will be connected with some dissatisfaction. So this paper suggest s that ergonomics has some significance for work satisfaction and that social Psychological efforts to enhance work satisfaction cannot easily succeed without taking into account human-factors principles.

• 대한인간공학회지
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• 제27권1호
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• pp.1-7
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• 2008

Work related musculoskeletal disorders (WMSDs) have become a hot issue within the Korean workplace for the past several years. Recently, the effect of job related stress on WMSDs, cerebro-cardiovascular diseases, and psychiatric disorders has been steadily increasing. The study conducted questionnaire of Korea version job stress model, WMSDs from NIOSH, CES-D (Center for Epidemiologic Studies Depression Scale), and STAI (State-Trait Anxiety Inventory) against train drivers. The results of this study show that the job stress score of the train drivers is high in the areas of physical environment, job latitude, interpersonal conflict, job insecurity, and organization system. The relation between job stress and WMSDs nd, interpersonal conflict, job insecurity and organizational system. The relation between job stress and depressive disorders showed statistical significance in the areas of job demand, job insecurity and low reward. Finally, the relation between job stress and anxiety disorders showed statistical significance in areas of job demand, interpersonal conflict, job insecurity, organizational system and low reward.

• ALGAE
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• 제38권4호
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• pp.217-240
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• 2023

Sulfated polysaccharides (SPs) isolated from seaweed have emerged as remarkable bioactive compounds with a wide spectrum of biological activities and have substantial value in the scientific and industrial domains. The current study explores the diverse biological activities of SPs and their relationship with their structures. This aids in an in-depth examination of the multifaceted biological activities of SPs, including anticoagulant, anti-inflammatory, antiviral, antioxidant, and immunomodulatory properties, which underpin their potential health benefits. Furthermore, the current study explores the complicated properties of SPs, with their extraction methodologies and techniques for precise characterization. Elucidation of the commercial significance of SPs derived from brown, red, and green seaweed by highlighting their potential applications has emphasized their importance in human well-being. Further, this review emphasizes the challenges needed to overcome research and industrial innovations for SPs. Collaboration among researchers, industry stakeholders, and regulatory authorities can overcome these challenges and elevate the potential of SPs to revolutionize industries such as pharmaceuticals, cosmeceuticals, food, and biotechnology.

• 한국산학기술학회논문지
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• 제15권2호
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• pp.777-784
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• 2014

본 연구는 애완동물 관련 전공 유무를 기준으로 애견의 선호, 관련 지식, 기능, 역할, 이미지, 용도를 조사하여 집단 간 애견의 인지도를 파악하고자 시행되었다. 이를 위해 농촌, 중소도시, 대도시에 재학 중인 전공자와 비전공자 164명의 고교생과 대학생을 대상으로 설문조사를 실시하고 수집한 자료는 집단 간 차이를 알아보기 위해 $X^2$-test로 유의성을 검정하였다. 분석결과 애견이 반려 및 사역 기능과 심신의 장애를 겪고 있는 환자들의 동물보조치료에 이용되는 기능에서 유의성(p<0.05)을 보여 주었다. 또한 전공 유무에 따라 애완동물과 반려동물의 인지 차이가 매우 크다는 것을 알 수 있었다. 이에 애견의 다양한 용도와 역할의 인지가 확대되어 애완동물을 너머 반려동물로서 그 정체성이 확보되는 정책적 프로그램의 개발과 적용이 필요하다고 판단된다.

• 한국산학기술학회논문지
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• 제15권2호
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• pp.891-901
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• 2014

본 연구에서는 미용실 이용고객의 성향은 제공되는 서비스요소와 함께 감성마케팅으로 대변되는 외적요소인 디스플레이 요소에도 많은 영향을 받고 있다 이렇듯 디스플레이 요소가 중요하게 작용하고 있는 현 시점에 미용실 고객의 라이프스타일이 디스플레이 구성요소에 어떠한 영향을 미치는 지와 미용실 고객의 라이프스타일에 따른 고객 만족 차이를 살펴보고 미용실의 디스플레이 구성요소가 고객만족에 어떠한 영향을 미칠 것인지 살펴보아 미용실 경영자에게 효율적이고 능률적인 미용실 디스플레이에 대한 아이디어를 제공함으로써 고객만족을 위한 전략을 수립하는데 유용한 정보를 제공하고자 하였다. 연구결과는 조명과 전체적인 분위기에 가장 영향을 미치는 라이프스타일 요인은 '편의지향형'이며, (p<0.05 수준)에 통계적으로 유의적인 영향을 미치는 것으로 나타났다. 색채에 가장 영향을 미치는 라이프스타일 요인은 '외모유행지향형'이며, (p<0.05 수준)에 통계적으로 유의적인 영향을 미치는 것으로 나타났다.

• 대한예방의학회:학술대회논문집
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• 대한예방의학회 1999년도 제51차 추계 학술대회 연제집
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• pp.196-197
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• 1999