• THE INTERNATIONAL COMMERCE & LAW REVIEW
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• v.75
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• pp.71-94
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• 2017

The Rotterdam Rules is the first international maritime carriage of goods Convention that acknowledge electronic records of contracts of carriage. The Rules have developed separate chapter in relation to electronic transport records' issuing, transfer, etc. This paper aims to evaluate Rotterdam Rules' contribution to the use of electronic transport records. To achieve the aims firstly this paper have examined the related articles of Rotterdam Rules, Secondly in practical aspects, this paper explores the opportunities and obstacles which could be happened in practical procedures, applicable to transport industry, shipper and holder of electronic transport records. Findings could be summarized as follows, first the Rules shows high acceptability to whom it may involved in transport industry by simplify the contents of the Rules to avoid conflict with each countries' national laws. The Rules acknowledge the functional equivalence between paper and electronic transport records in specific provisions. This could be important development to facilitate the use of electronic transport records. But the Rules have not mentioned liability limit of transport industry when the problems arise from issuing, tele-transmission, transfer of the records. And the secure of the functional equivalence between paper and electronic transport records also could be remained in uncertain regime due to different stance of each national laws.

• Nutrition Research and Practice
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• v.8 no.4
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• pp.439-444
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• 2014

BACKGROUND/OBJECTIVES: Korean ordinary diets are referred to be good for human health in worldwide. However it is uncertain whether they provide microminerals enough for growth and health of teenagers. A main purpose of this study was to identify micromineral contents in school meals. MATERIALS/METHODS: The fifty cuisines were collected from elementary schools and middle schools in Gyeongnam area. The contents of Fe, Zn, Cu and Mn among microminerals were analyzed by using ICP-OES method. Data were expressed as mean, standard deviation and range value and linear regression analysis performed. RESULTS: Fe level of Pangibuseotpaprika-salad was the highest among side-dishes (average $346.6{\mu}g$) and Zn level of Sullung-tang was highest among soups (average $229.1{\mu}g$). Cu level of Buchu-kimchi was the highest among kimchies (average $217.5{\mu}g$) and Mn level of Gumeunkongyangnyum-gui was highest among side-dishes (average $198.4{\mu}g$). Generally cooked-rices as main dish had relative smaller amounts of microminerals than the other cuisines. The results showed that the ratio of Cu : Fe : Zn was approximately 12 : 4 : 1 and the relationship between Fe versus Zn or Fe versus Cu was significantly positive. CONCLUSION: Comparing to Korean Dietary Recommended Intakes (KDRI) level, school meals provided not sufficient amount (<25% DRI) of Fe, Zn or Mn, while they did excessive amount (>125% DRI) of Cu.

• The Transactions of the Korean Institute of Electrical Engineers D
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• v.49 no.8
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• pp.423-431
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• 2000

This paper presents a systematic approach to the input-output data-based fuzzy modeling for the complex and uncertain nonlinear systems, in which the conventional mathematical models may fail to give the satisfying results. To do this, we propose a new method that can yield a successful fuzzy model using a mGA hybrid schemes with a fine-tuning method. We also propose a new coding method fo chromosome for applying the mGA to the structure and parameter identifications of fuzzy model simultaneously. During mGA search, multi-purpose fitness function with a penalty process is proposed and adapted to guarantee the accurate and valid fuzzy modes. This coding scheme can effectively represent the zero-order Takagi-Sugeno fuzzy model. The proposed mGA hybrid schemes can coarsely optimize the structure and the parameters of the fuzzy inference system, and then fine tune the identified fuzzy model by using the gradient descent method. In order to demonstrate the superiority and efficiency of the proposed scheme, we finally show its applications to two nonlinear systems.

• Journal of the Korean Institute of Intelligent Systems
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• v.19 no.4
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• pp.464-469
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• 2009

This paper discusses a robust observer-based output-feedback stabilization of an uncertain Takagi-Sugeno (T-S) fuzzy system in a network. In the networked control system, the input delay occurs inevitably and it is expressed by the Markovian stochastic process. To design robust sampled-data observer-based output-feedback controller, we discretize the T-S fuzzy system and represent as a jump system. Stochastic robust stabilization condition is formulated in terms of linear matrix inequalities.

• Journal of Distribution Science
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• v.13 no.5
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• pp.23-31
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• 2015

Purpose - This study investigated competitive counteractions necessary for continuous growth in a rapidly changing logistics environment in Northeast Asia. Research Design, Data, and Methodology - Using a time series analysis, the study first investigated Northeast Asian trade scale and volume by examining online and offline material from the Ministry of Ocean and Fisheries, Busan Port Authority, and other government agencies. A literature survey was done to investigate the state and prospect of the logistics environment in Northeast Asia including changes in freight volume at major ports in the three Northeast Asian countries. Result - The results of the study suggest using the Trans-Korean Railroad (TKR), as well as promoting the North Pole and South Pole routes, to compete against changes in trade volume and the logistics environment in Northeast Asia. A SWOT analysis was done to examine the effectiveness of these strategies. Conclusions - The findings indicate that the TKR impact, using the Busan Port connecting the Trans-China Railway (TCR), the Trans-Siberian (TSR), and the North Pole Route, may be uncertain in practice considering the uncertainty in international politics.

• Journal of The Korean Society of Integrative Medicine
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• v.7 no.4
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• pp.105-117
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• 2019

Purpose : Using qualitative research and a phenomenological approach, the present study aimed to explore men's experiences of becoming a nurse. We posed the question "What has been your experience of becoming a nurse?" Methods : Eleven male nurses from three regions in Korea were selected through convenience sampling. The protocol suggested by Colaizzi was used for data analysis. Results : The principal themes were "Challenging to the stochastic stereotype of gender mechanics," "Floating outside the enclosure of multiple groups," "The male nurse's conceptualization of nursing organizations," "To stand with self-doubt, thinking of it as a stopover," and "Situations encountered by a male nurse." Conclusion : Men experience gender discrimination based on the social roles that are imposed on males and females both at school and in the workplace. They prefer to work where they have more diverse tasks that require quick responses. However, most male nurses adapt to this work by outlasting the difficulties. These nurses become accustomed to their tasks, and satisfied with their mature work performance. They often feel they are not adequately compensated for their work. They may judge the future as uncertain, and have lingering doubts about maintaining their positions, ultimately gravitating toward specialized fields that promise a brighter future and are more consistent with traditional gender expectations.

• Development and Reproduction
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• v.24 no.2
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• pp.71-78
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• 2020

Endometriosis is a common gynecologic disease, worldwide, whose true prevalence is uncertain because it is a difficult disease to diagnose. Endometriosis is a common cause of chronic pelvic pain, dysmenorrhea, and infertility, and is also associated with ovarian cancer. Although the risk factors for endometriosis are unclear, there is increasing evidence that exposure to environmental contaminants, especially phthalates, could affect the pathogenesis of endometriosis. Phthalates are industrial chemicals, used to make flexible plastics, and are present in numerous common plastic products, including medical devices and materials. Several in vitro studies have suggested a positive association between exposure to phthalate, or phthalate metabolites, and the risk of endometriosis. Since the 2000s, studies based on human plasma and urinary concentrations of various phthalate metabolites have been published, but there are still limitations to our understanding of the pathophysiology of phthalates and endometriosis. This report aims to review the current state of knowledge about a possible role of phthalates in the pathogenesis of endometriosis based on cell culture, animal models, and human data.

• 한국금형공학회:학술대회논문집
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• 2008.06a
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• pp.61-66
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• 2008

The hydraulic system have been used much in a heavy machine which high power source is desired. In the case of the heavy press machine and the injection molding machine, the use of the hydraulic power is essential especially for increasing productivity and getting the good products. Because the hydraulic circuit is very complex and the system parameters are uncertain, the development of the simulation model for hydraulic system is not easy in the heavy machine. In this case, Many researchers have used a commercial program for analysis and development in a major field of study. In this paper, the aim is to develop the simulation model of the hydraulic system with various commercial program for trajectory tracking. And adaptive control method is applied to the simulation model for the trajectory tracking of a cylinder motion. Load on the cylinder is modeled in ADAMS program, the hydraulic circuit including pump, spool valve and cylinder is modeled in AMESim program and a controller is designed in MatLab/simulink program. The suggested model is applied for the tracking of a cylinder motion, and through computer simulation, its trajectory tracking performance is illustrated.

• Korean Journal of Construction Engineering and Management
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• v.14 no.4
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• pp.15-23
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• 2013

Because that construction project is usually uncertain and the plan of it changes frequently, it is difficult to make a reliable and feasible plan for it. As the BIM technology is developed, we can simulate the future of the construction project visually and make more reliable plan. However, data production efficiency is not so high, it is used just for animation and presentation usage. Although, a lot of construction simulation systems are developed, it is difficult to measure performance of them. In this study, we defined the construction simulation work process and the scenarios to measure performance of them. The performance measurement method using simulation process scenario can make possible benchmark test of them.

• Journal of Digital Contents Society
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• v.18 no.4
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• pp.691-698
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• 2017

The purpose of this study was to investigate parental concern about infant's smartphone usage experience. The research participants were 6 parents with infants lived in Seoul and Gyeonggi province. The data were collected by focus group interviews. The results of this study revealed that parent's smartphone usage experience could be classified as "Everyday life" and "Supporting tool of parenting". And parental concern could be classified as "Uncertain educational expectation", "Developmental problems", and "Addiction propensity". This study could contribute to understanding the problems of smartphone usage of infants, and providing basic materials for parent education about correct guidance and addiction prevention of digital devices including smartphone.