• Clean Technology
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• v.24 no.3
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• pp.255-266
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• 2018

In this paper, the effects of large national industrial complexes on the generation of local hazardous substances were analyzed based on their size, industrial characteristics. In Seoul, the proportion of hazardous substances, which adversely affect the atmosphere of the entire city, was much less than that of other regional industrial complexes, centered on knowledge-based industries. On the other hand, other national industrial complexes based on manufacturing industries, such as machinery, metal, electricity, and electronics, were found to have a combination of industry characteristics and logistics and regional characteristics. Overall, it was found that the increase in productivity in large national industrial complexes was not proportional to the increase in hazardous substances throughout the region. In addition, it was also found that in North Gyeongsang Province, which is based on the heavy chemical industry, the percentage of hazardous substances is different from other regions due to the characteristics of the industry.

• Korean Journal of Computational Design and Engineering
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• v.13 no.2
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• pp.139-152
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• 2008

In order to survive worldwide competition, today's industries are experiencing strong pressure to introduce higher quality products with lower cost and shorter lead-time. Therefore, the role of design in the process of product development is increasing in significance. In this research, two methods for improving the design capability are proposed: construction of design environment and design automation using 3D CAD system. The designers and design process are the core of product design using 3D CAD system. In order to maximize the design performance, construction of the design environment including selection of a suitable system, designer training for best use of the system, establishment of an efficient design process, and stabilization of the environment are required. A method is suggested to construct design environment by systematizing the contents of the projects and consulting experiences carried out for various categories of business such as electronic devices, motorcycles, electricity parts, sanitary wares, injection molds, and die casing molds. Design automation helps reduce tedious and time-consuming jobs, simplify complicated and error-prone modeling and drawing works to shorten the lead time and improve the product quality. To develop a design automation system, understanding the process and the related knowledge on design are very important before implementing the system using API provided by 3D CAD system. In this research, an eight-step procedure is proposed for the development of a design automation system. These eight steps are analysis of needs, determination of specification, verification of specification using 3D CAD system, inspection of related API functions, programming, field test, application in practice, and maintenance. A case study in which five design automation systems in the design of turbine generators using the proposed method is introduced in detail. These systems play important roles in the generation of various output items including 3D models, drafts, material information, and NC data. The case study shows how effectively the design time is reduced and the quality improved using those systems.

• The Journal of the Korea Contents Association
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• v.12 no.11
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• pp.511-518
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• 2012

In this study, the trend in green technology was observed and the domain of the green technology area that will be actively studied in the future was found by establishing knowledge map in green technology area and comparing and analyzing green technology information in Korea and overseas in time series. For the purpose of this study, network analysis was conducted for the keyword of green technology information provided by green technology information portal site (www.gtnet.go.kr) operated by Korea Institute of Science and Technology Information. Network analysis was conducted using keyword, and change of study subject was found by dividing the analysis result into periods. In the result of network analysis on top 100 keywords from total English keyword, it was found that renewable energy related areas such as solar energy and biomass had high centrality. When the main keyword trend by year was studied, centrality of solar cell, nanotechnology, smart grid, and fuel cell were found to increase, showing that research and development in generation and use of renewable energy are actively made.

• The Journal of Korean Medicine
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• v.38 no.3
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• pp.143-159
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• 2017

Objectives: The aim of this study was to investigate the current status of and seek for measures to activate Korean medicine in stroke care. Methods: This is an e-mail survey targeting the members of Korean medical doctors registered at the association of Korean medicine. The project team of the society of stroke on Korean medicine for the development of clinical practice guideline for stroke has devised the items for the questionnaire. The survey was conducted for 15 days in November 2016. Results: The percentage of the respondents who have treated patients with stroke for the past month was 11.2% in the acute phase, 20.5% in the convalescent phase, and 32.4% in the chronic phase. Approximately 80% of the respondents answered they had a decrease in the number of patients compared to 10 years ago, regardless of the stroke phase. Most of the respondents were using Western medicine together with traditional Korean medicine for physical examination. Acupuncture and herbal medicine were the main therapeutic interventions. The two measures chosen by the most respondents to activate the Korean medicine usage for stroke care were the expansion of the insurance coverage (34.9%) and the generation of evidence on the effectiveness of traditional Korean medicine (25.1%) Conclusion: It is necessary to actively show the role of the Korean medicine through the establishment of the evidence on the effectiveness of Korean medicine and the promotion based on the evidence. In addition, optimal treatment methods should be derived based on the traditional knowledge and modern scientific research and the methods should be educated to every Korean medical clinics and hospitals so that they can be implemented in clinical practice. At the same time, the government should provide policy support to ensure that the optimal treatment can be timely and appropriately implemented.

• Journal of Korean Society of Industrial and Systems Engineering
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• v.26 no.4
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• pp.82-90
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• 2003

The Systems Engineering, as a methodology for engineering and management of today's ever-growing complex system, is a comprehensive and iterative problem-solving process. The process centers on the analysis and management of the stakeholders' needs throughout the entire life-cycle of a system and searches for an optimized system architecture. There are many essential needs and requirements to be met when a system development task is carried out. Systems Engineering Management Plan(SEMP), as a specification for system development process, must be established to satisfy constraints and requirements of stakeholders successfully and to prevent cost overrun and schedule delay. SEMP defines technical management functions and comprehensive plans for managing and controlling the entire system development process, specialty engineering processes, etc. Especially. in the case of a large-scale complex system development program where various disciplinary engineering such as mechanical; electrical; electronics; control; telecommunication; material; civil engineering etc. must be synthesized, it Is essential to develop SEMP to ensure systematic and continuous process improvements for quality and to prevent cost/schedule overruns. This study will enable the process knowledge management on the subject of SEMP as a core systems engineering management effort, that is, definitely defining and continuously managing specification of development process about requirements, functions, and process realization of it using a computer-aided systems engineering software. The paper suggests a systematic SEMP development process and demonstrates a data model and schema for computer-aided systems engineering software, RDD-100, for use in the development and management of SEMP. These are being applied to the systems engineering technology development task for the next-generation high-speed railway systems in progress.

• Journal of the Korean Chemical Society
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• v.60 no.1
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• pp.59-68
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• 2016

The cultivation of scientific literacy in recent science education can be improved by experiencing and understanding scientific inquiry by which scientific knowledge is formed. The National Research Council(NRC) released the Next Generation Science Standards (NGSS) including 8 practices of science that help students experience scientists' inquiry and subdividing achievement standards to perform 8 practices of science into by grade clusters. This study was intended to examine science inquiry activities included in 4 high school chemistry II textbooks developed by the 2009 revised curriculum using the 8 scientific practices and their achievement standards for 9th-12th grade. The science inquiry activities and the science practices included in the 4 textbooks were 173 and 678. The science practices included in the inquiry activities of 4 textbooks included the most ‘analyzing and interpreting data.’ The ‘engaging in argument from evidence’, ‘Obtaining, Evaluating, and Communicating Information’ were less than other practices. The ‘asking questions and defining problem’ and ‘developing and using models’ were not nearly included in the 4 high school chemistry II textbooks.

• Journal of the Korean Institute of Intelligent Systems
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• v.18 no.1
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• pp.122-126
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• 2008

Integrating a 3D solid modeler with a general purpose FEM code, an automatic stress intensity factor analysis system of the 3D crack problems has been developed. A geometry model, i.e. a solid containing one or several 3D cracks is defined. Several distributions of local node density are chosen, and then automatically superposed on one another over the geometry model by using the fuzzy knowledge processing. Nodes are generated and quadratic tetrahedral solid elements are generated by the Delaunay triangulation techniques. Finally, the complete finite element(FE) model generated, and a stress analysis is performed. This paper describes the methodologies to realize such functions, and demonstrates the validity of the present system.

• Journal of the Ergonomics Society of Korea
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• v.32 no.4
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• pp.333-340
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• 2013

Objective: The aim of this study is to provide a current knowledge of the multiple issues regarding motion effects on crew performance. Background: The motions of the ship may create motion sickness, nausea and vomit. Also, these motions also disturb the balance of crew members, increase the energy expenditure of crew for shipboard work, and result in increased levels of injury and fatigue. However, the motion effects of the ship on crew performance has not been thoroughly investigated. Method: Participants(N=10) were engaged in an experiment in 2 experimental environments(training ship and ship handling simulator) and 2 navigational conditions(day and night). The COP(Center of Pressure) data were recorded as an objective measure of postural balance control and the SSQ(Simulator Sickness Questionnaire) was used as a subjective measure of sickness. Results: The results showed that COP has a no significant difference based on experimental environments, but significant effect on SSQ. Conclusion: During the virtual simulator navigation, subjects showed significant SSQ level changes, which included decreased SSQ data. But, there is no significant difference of COP between training ship and ship handling simulator. Application: The results of this study could be applied to the next generation of ship design to decrease effect of motion at sea and to increase performance of ship crew.

• The Journal of Korean Association of Computer Education
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• v.14 no.5
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• pp.9-18
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• 2011

Compiler development projects, which are designed and taught in compiler course, allow students to practice and absorb valuable amount of experience and techniques in developing compilers. However, both instructors and students face difficulties as they are often limited by insufficient hands-on time during course of an academic year along with a relatively high level of technologies involved when dealing with compilers. As well, most compiler's target systems use interpreter-based technologies which are rather limited in drawing student's attention. As a result compiler courses often end up being more of a theoretical course than practical. This paper presents a new integrated development environment (IDE) that will help overcome aforementioned difficulties and allow students to obtain both theoretical and practical knowledge more efficiently. The development environment includes a reference compiler with $Mindstorms^{(R)}$ NXT Robots as the target system, compiler development tool, target language test tool, and code generation visualizer. It is developed as a plug-in for the popular Eclipse IDE which enables easy access and great expandability. This integrated development environment allows students to understand compilers better and start their development faster.

• Culinary science and hospitality research
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• v.21 no.5
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• pp.204-213
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• 2015

In the food and beverage industry, foodscape is known as an important component in satisfy the customer and return patronage. However, it has been overlooked in the restaurant service quality as well as less examined in the hospitality journal. Thus, it causes that the restaurant managers have little knowledge on how the foodscape influences customer satisfaction as well as behavioral intention. Therefore, the purpose of this study is to analyze the role of foodscape attributes on customer satisfaction and behavioral intention in $caf{\acute{e}}$ in Johor Bahru, Malaysia. The sample size of the questionnaire in this study was 322 respondents who are Generation Y in the age group between 18 and 35 years old. Multiple regression was used in the study to identify the relative importance of foodscape attributes that lead to customer satisfaction and behavioral intention. Through this research, the restaurant managers would aware and realize that foodscape would have relationships between customer satisfaction as well as behavioral intention.