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김재국,전용웅,조암,Kim, Jae-Guk,Jeon, Yong-Ung,Jo, Am 대한인간공학회 2000 大韓人間工學會誌 Vol.19 No.3
This study is about the satisfaction and the usage of users' manual for mobile phones with multi-functions. The users' manual is redesigned by including ergonomic factors verified through survey. This paper is to propose a redesigned users' manual which is more readable and understandable than original users' manuals. The degree of improvement is measured by the usability evaluation. There are significant differences(p<0.05) in the number of functional description original users' manuals. And the degree of users' satisfaction with the description of Crystal Display) are significant diffenences among the original users' manuals. In the as of description, the significant differences are partially found. The users' manual is re arranging the explanations of functions compactly in a table form, and reducing the cl has also $3cm^*2cm$ LCD figures to facilitate the understanding. The usability evaluation users' satisfaction and understanding for the redesigned users' manual are higher than original users' manuals.
金在國,李鎭友 東新大學校 工業技術硏究所 1997 工業技術硏究 Vol.3 No.-
Most models and analysis of urban travel behavior focus on trying to explain variations in travel behavior of different behavior in terms of the characteristics of those individuals and their environment. Also, the analysis is typically based on a single day record of each individual' travel. But, developments in travel behavior analysis are leading to a greater awareness of the need to examine day-to-day variability in travel behavior. This paper analyzed dynamic characteristics, intrapersonal variability, and inter personal variability in urban travel behavior using activity diaries collected by 7 consecutives days in Gwangju. The analysis shows that, interpersonal variability as well as intrapersonal variability cannot be neglected in day-to-day variability of travel behavior.
金在國,李鎭友 東新大學校 工業技術硏究所 1994 工業技術硏究 Vol.1 No.-
As for the travel demand analysis of the past, forcasting has been conducted by the use of revealed preference(RP) informations about actual or observed choice made by individuals. Forcasting method using RP data needs implict assumptions that there will be no remarkable change in existing transport conditions. However, in case of occuring the great change in existing conditions or adding a new choice-set of hypothetical options, it is very difficult to predict future travel demand. Fortunately in recent year, especially in the mode choice analysis, it has been preceived that the importance of individual performance data using ststed preference(SP) experiments as well as RP data. Since SP experiments present respondent with various hypothetical alternatives, which are produced by a combination of a number of different attribute levels, and ask them to indicate a preference, it is possible to analyze travel behavior under a situation of potential environment change such as proposed alternative mode of transportation. The basic problem, however, remains that SP are not consistent with the actual travel behaviors and the research reports has not been sufficiently from models estimated using SP data. Under this background, This study aims to analyze the factors affecting the mode choice behavior by the variance analysis of orthogonal-arrays-table, the transfer intention data and the mode choice model using SP data for the new subway system in Kwang-Ju For this analysis, we assumed subway operations in the Gwang-Ju, and set up a choice-set of hypothetical options based on Experimental Design Method.
김재국,이진우,박병선 東新大學校 工業技術硏究所 2002 工業技術硏究 Vol.8 No.-
Although, we could get more reasonable results from the transportation behavior study based on activity diary data, there were not make rapid progressing because of the absence of analytical methodology. Therefore, we set up causal structure model of activity participation, trip generation, and travel time by the structural equation modeling to conquer of the absence of analytical methodology. Results of our studies show that activity-diary can be analyzed by the structural equation modeling. It will be a good study momentum in the behavioral study based on activity diary which had not been generalized because of the absence of analytical methodology.
金在國,李鎭友 東新大學校 工業技術硏究所 1996 工業技術硏究 Vol.2 No.-
In the mode choice analysis, since SP experiments present respondent with various hypothetical alternatives, which are produced by a combination of a number of different attribute levels, and ask them to indicate a preference, it is possible to analyze travel behavior under a situation of potential environment change such as proposed alternative mode of transportation. This study is to compare stated preference (SP) data with transfer price (TP) data by comparison of commulative transfer ratio from passenger car into medium rail transit. For this analysis, we assumed subway operations in the Gwang-Ju, and set up a choice-set of hypothetical options based on Experimental Design Method. As the result, the preference of same set of individuals by SP and TP questions might not be consistent with each other. This means that stated preferences are changable by difference of survey merhods. The updating of SP responses by the ultimatic condition of TP data also contributed the higher internal validity of SP model.
李相俊,金在國 東新大學校 工業技術硏究所 1997 工業技術硏究 Vol.3 No.-
The conservation and application of historical environment is one of alternatives that are able to solve urban affairs. From this point of view, there is a necessity of research on these conservation and application. The conclusion of this study can be summarized as follows: 1. For the sake of conservation and application in historical environment, there are five steps(1. enlightenment ㆍ movement, 2. investigation ㆍ appraisal, 3. appointment ㆍ selection, 4. control ㆍ reformation, 5. application ㆍ management) 2. There are incentives of uniform control, special district control, performance control, TDR, PUD, MXD that are the programs of urban planning in historical environment. 3. The physical facilities of historical environment have to be make the use of parks, museum, art gallery, rest room etc. 4. There is necessity of residents-participation in conservation and application of historical environment.