• Spatial Information Research
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• v.21 no.3
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• pp.31-43
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• 2013

Although the vector map data possesses much higher values than other types of multimedia, the data copyright and the protection against illegal duplication are still far away from the attention. This paper proposes a novel watermarking technique which is both robust to diverse attacks and optimized to a vector map structure. Six approaches are proposed for the design of the watermarking algorithm: point-based approach, building a minimum perimeter triangle, watermark embedding in the length ratio, referencing to the pixel position of the watermark image, grouping, and using the one-way function. Our method preserves the characteristics of watermarking such as embedding effectiveness, fidelity, and false positive rate, while maintaining robustness to all types of attack except a noise attack. Furthermore, our method is a blind scheme in which robustness is independent of the map data. Finally, our method provides a solution to the challenging issue of degraded robustness under severe simplification attacks.

• Journal of the Korea Society of Computer and Information
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• v.19 no.8
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• pp.45-54
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• 2014

In this paper, we proposed an effective quality improvement scheme of magnified image using the surface characteristics in image. If the surface in image is estimated as simple convex surface or simple concave surface, the interpolated value can be calculated to have the surface characteristics by using the other method in the proposed scheme. The calculated value becomes the interpolated pixel value inmagnified image. So, themagnified image reflects the surface characteristics of the real image. If the surface is not estimated as simple convex surface or simple concave surface, the interpolated value is calculated more accurately than bilinear interpolation by using the method of the proposed scheme. The PSNR values of the magnified images using the proposed schemes are greater than those of the magnified images using the previous interpolation schemes.

• Korean journal of communication and information
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• v.48
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• pp.231-256
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• 2009

The purpose of this study is that we regard the notion of reality that television viewers feel as presence, point out problem of measurement tool that appropriate for TV, clarify the subordinate concept of presence, and develop measurement tool that have reliability and validity. To achieve this, we paid attention to reality of television as a determinant of presence and tried to elicit proper subcategories. That is, we progressed two steps research that distinguished external characteristic and content of the media into sensible reality and cognitive reality, and develop measure item and verified statistical validity. We analyzed the second research result about measurement category of presence selected by first research and then we did Exploratory factor analysis and Confirmatory factor analysis. As a result, the first characteristic that make people experience presence is sensible reality, that is, it is the factor of sensible faithfullness, image faithfullness, and image reality as the form factor of the media. The second characteristic is cognitive reality. That is the factor of social reality, relational reality, and practical reality as the factor of media content. Synthesizing these subordinate factor, we can conceptualize presence experience as a reality of media form and content in HDTV viewing environment.

• The Korean Journal of Emergency Medical Services
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• v.5 no.1
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• pp.177-198
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• 2001

The purpose of this research which was conducted by surveying the transfer consultation records from 360 medical institutions such as general hospitals, hospitals, clinics to the Emergency Medical Center at E University Hospital for six months(Jan. 1, 2000 - Jun. 30, 2000) are to standardize & complete transfer consultation record of hospitals at the 1st & 2nd referral level and to give patients transferred emergency medical center medical information services on a better quality. The conclusions and suggestions from this study were summarized as follows; (1) Examing the distribution of the referral medical consultation(transfer) sheet type, surgery part local clinic sheet types were 34.4%, medical part local clinic sheet types were 26.7%, undifferentiated local clinic sheet types were 23.9% and hospital level sheet types were 15.0%. (2) The items of the transfer consultation records had been standardized more than 75% in the order of patient's name, date, doctor's name, diagnosis, patient's status, impressions. (3) That the degree of recording completion on these items is in the order of patient's name, date, diagnosis, impressions was revealed. (4) Because the standardization and the degree of recording completion are very low in the patient's gender, age, address, electronic recording system was needed for more perfect input of initial patient informations. (5) This standardizing & complete recording on examination and medication will prevent re-examination and abuse of medication for patients transferred emergency medical center. (6) EMT Transfer System should be fixed in all medical institute for the standardizing & complete recording on care period and departure time will give many emergency patients the proper treatments at the proper time. (7) It was revealed that developing new standardized transfer consultation record & using electronic recording system are needed. (8) The complete recording & Fast Track System were needed for higher rate of bed operation at emergency medical center and more hospital profit.

• Journal of the Korean Society of Food Science and Nutrition
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• v.19 no.1
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• pp.53-60
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• 1990

A study was carried out to investigate the dietary environment food intake and blood picture of rural housewives. Sixty percent of female farmer's was in weak health state. Mean farmer's syndrome score was 4, 7 which meaning that they must give attention to their health. The intake of animal food group was poor Most of nutrients taken by them were almost lower than those of Korean Recommended Dietary Allowances except vitamin C. According to the blood tests the blood levels of lipids calcium magnesium iron hemoglobin and hematocrit were in lower states. All of the farmers were lower serum level of ferritin whereas but glucose protein and albumin levels were normal. Serum magnesium was correlated with cereal intake The intake of cereal fat and oils and vegetables was correlated with physical perfect index. Hemoglobin and hematocrit level were negatively correlated with physical perfect index. Hemoglobin and hematocrit level were negatively correlated with the food group of fruits and fishes.

• Proceedings of the Korean Institute of Information and Commucation Sciences Conference
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• 2008.10a
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• pp.183-188
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• 2008

Engine control/performance model for helicopter simulator is one of the most important models which affect flight performance and handling quality. It is typical to develop the model based on the raw data and models from the engine designers/manufacturers. The approaches in this study were to develop the basic model based on the available resources and to tune and verify it based on the ground/flight test results. The maintenance manuals of TB3-117 which is installed in KA-32T were reviewed and the components to be simulated for the engine control model were categorized and modeled. Piece-wise linear modeling method was used for the engine performance model. The engine performance data in the engine maintenance manuals were incorporated into the engine steady state performance tables, which were incorporated with the transfer functions for the dynamic performance. Engine control/performance model was compared and tuned with the ground/flight test results. It was verified that the fidelity of the model was within the tolerances in FAA AC120-63.

• Journal of Engineering Education Research
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• v.9 no.1
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• pp.75-88
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• 2006

This paper reviews the general education curriculum in engineering colleges which are accredited or prepare to be accredited in Korea. And it researches the relation of the learning outcome of general education and course assessment. Most of engineering colleges usually operate core curriculum. They provided engineering students few specific general education courses if anything. Engineering students evaluated the outcome of the general education courses less than major courses. It is necessary to develop new general education courses for engineer like as the management for engineering students or leadership program Also the faculties teaching the general education courses need to develop new learning method and materials, which help students to achieve soft skills.

• KOREAN JOURNAL OF CROP SCIENCE
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• v.38 no.2
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• pp.103-111
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• 1993

A greenhouse experiment was conducted to determine the number of optimum. tillers within a plant for high yield and to clarify the morpho-anatomical characteristics of cultivars having different tillering abilities. Optimum tillers, i.e tillers which produced heavy panicles were found to be around five to nine tillers per plant, although wider range may be possible if more cultivars were tested or under different growth conditions. Optimum tillers emerged within a short time after transplanting as compared with the other tillers. They exhibited longer tiller duration, produced more spikelets and had better filled spikelets, more vascular bundles and were taller with larger leaf area. However, the 1, 000 grain weight and fertility varied with cultivars and showed no general trend. Of this morpho-anatomical features, the total number of spike lets per plant was considered as the potential criterion for determining the optimum tiller number.

• Journal of the Korean Society for Aeronautical & Space Sciences
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• v.43 no.3
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• pp.213-223
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• 2015

The helicopter initial design model was established by using the latest weight estimation equations based on the Tishchenko's methodology through the study existing initial design tools. The sequential decomposition method is used to reduce analysis time in the sizing. Empirical parameters of the weight estimation equation were also extracted from numerical and regression analysis for a helicopter database. Design input and output values were compared with the RISPECT design tool. Finally, comparison of the re-design resulting for several existing helicopters was presented and showed the good agreement within less than 5% in the weight estimation and main rotor sizing. Established initial design model was proved to be effectively used as initial design tool.

• Archives of design research
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• v.12 no.1
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• pp.63-72
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• 1999

Customer needs are considered as being quite remarkable in product design. The elaborate fulfillment of them in the design solution is closely related to the success of a product. They, however, are generally collected and presented by marketers. Consequently those needs are difficult for designers to understand and therefore might not get fulfilled in the final product design. Here the goal of this study is set that the process of design information elicitation based on customer needs is developed as a guideline of utilizing them in design activity in effective manners. findings of this study can be summarized as follows: First, customer needs are expected to get interpreted into the designer-oriented language in the aspect of function and image of a product. Those interpreted needs play a role as a base for concept establishment and the development of it with the help of various techniques from the fold of statistics and systematic product development. Second, designer-oriented manner of understanding customer needs requires designers to take parts in from collecting to interpreting them for better design solution that fulfills them, which brings up a necessity that available techniques shouldn't be beyond understanding of designers and for the styling activity customer needs of image aspect should be interpreted and presented visually. In this study, those visual information is presented through the image maps and image information sheet. It is image information sheet that is suggested to contain visual and verbal information altogether such as the overall and major elements images expressing a specific image need and the correlation between them showing how much the elements image contributes to building the overall image.