• KSII Transactions on Internet and Information Systems (TIIS)
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• v.10 no.1
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• pp.257-271
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• 2016

The Structural SIMilarity (SSIM) index is one of the most widely-used methods for perceptual image quality assessment (IQA). It is based on the principle that the human visual system (HVS) is sensitive to the overall structure of an image. However, it has been reported that indices predicted by SSIM tend to be biased depending on the type of distortion, which increases the deviation from the main regression curve. Consequently, SSIM can result in serious performance degradation. In this study, we investigate the aforementioned phenomenon from a new perspective and review a constant that plays a big role within the SSIM metric but has been overlooked thus far. Through an experimental study on the influence of this constant in evaluating images with SSIM, we are able to propose a new solution that resolves this issue. In the proposed IQA method, we first design a system to classify different types of distortion, and then match an optimal constant to each type. In addition, we supplement the proposed method by adding color perception-based structural information. For a comprehensive assessment, we compare the proposed method with 15 existing IQA methods. The experimental results show that the proposed method is more consistent with the HVS than the other methods.

• Korean Journal of Human Ecology
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• v.15 no.1
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• pp.157-168
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• 2006

This research is to investigate the perception and satisfaction of high school students for Saenghwal Hanbok school uniforms. With this study we will be able to provide useful information for clothing companies as well as schools which are planning to introduce Saenghwal Hanbok as a uniform. The research subjects included 446 high school students of Chungcheong and Gyeonggi areas. The results of this study are as follows: 1. Male students evaluated Saenghwal Hanbok affirmatively in terms of its activity convenience. Female students, on the other hand, thought highly of it in such aspects as modern beauty, aesthetic color, distinction, symmetry, wearability, tidiness, color harmony, color unity, decoration details, and suitability for special occasions as well as modem daily life. 2. The satisfaction with Saenghwal Hanbok as a school uniform stayed, on an average, below a mid-level. It appeared that high schools with long history showed more interest than comparatively newly-established schools. Also, students with obesity liked Saenghwal Hanbok more than normal students. 3. The students' demand for price cut was highest among other demands of Saenghwal Hanbok school uniform. In addition, almost all items including wearability, material, color, activity convenience, and patterns appeared to need more improving.

• Journal of the Korean Society for information Management
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• v.25 no.2
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• pp.5-24
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• 2008

As resource sharing becomes more active and complicated in academic libraries, a better understanding of how librarians-a key stakeholder-view the current level of resource sharing is needed. Using survey method, this study collected data regarding the Perception of 78 librarians with regard to interlibrary loan, document delivery, union catalog construction, shared acquisition, and community building. Overall, the respondents evaluated well-established forms of resource sharing(interlibrary loan, document delivery, and union catalog construction) more positively than less-well developed ones(shared acquisition and community building). Correlation analysis between perception of library/individual characteristics was conducted. Barriers to each of the five areas of resource sharing are also identified in the study.

• Journal of Korean Society of Industrial and Systems Engineering
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• v.14 no.24
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• pp.123-132
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• 1991

This study deals with the experiment of perceiving visual information according to the positions of vehicle side mirrors. In the design of vehicle, the consideration of safety is very important. Therefore we consider the positions of side mirrors to use visual information effectively which is important factor to driver. This paper presents the position of side mirror to elevate the degree of visual perception for the circumstances of danger by experiments. To exhibit the circumstances of danger. 4 LED(Light Emitted Diode) art located at each side(right. left front. hack) of vehicle. A subject pushes the LED switch to see that if he perceives the circumstance of danger. To record the circumstance of randomly generated danger, computer interface card is used to control 4 LED and swithch on IBM PC/AT Experiments are divided into 2 parts. The 1st experiment present the independence of right & left side mirror. The 2nd experiment present optimal position of right & left side mirror. The vehicle used in experiment is model EL of H Co.. Statistical process of experimental data using SPSS(Statistical Package for Social Sciences)/PC package concludes that 1) the optimal position of right side mirror is 54cm forward of exist position. 2) for the left side mirror, the position of 120cm forward of exist position shows the worst degree of perception. and the optimal position does not exist in statistical meaning.

• Proceedings of the Korean Institute of Navigation and Port Research Conference
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• 2006.10a
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• pp.3-10
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• 2006

Recently it is coming to be hish reality on visual system in ship-handling simulator depending on the technical development of 3D computer graphics. Even with high reality, it is possible that visual information presented seafarers through screen or display is not equivalent to the real world. In docking maneuvering, visual targets or obstructs are sighted close to ship's operator or within few hundred meters, so it might be possible to affect visual information such as the difference between both eyes' and single eye's visual sight. Because it is not possible to perceive of very slow ship's movement by visual in case of very large vessels, so the Doppler Docking SONAR and/or Docking Speed and Distance Measurement Equipment were developed and applied for safety docking maneuvering. By the way, the simulator training includes the ship's maneuvering training in docking, but in Ship-handling Simulator and also onboard, there are some limitations of perception of ship's movement with visual information. In this paper, perception of ship's movement with visual system in Ship-handling Simulator and competition of performances of visual systems that are conventional screen type with Fixed Eye-point system and Mission Simulator. We got some conclusions not only on the effectiveness for visual system but also on the human behavior in docking maneuver.

• Journal of East-West Nursing Research
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• v.29 no.1
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• pp.24-32
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• 2023

Purpose: This study aims to examine level of perception and performance of privacy protection behavior of anesthesia and operating room (OR) nurses for patients who underwent general anesthesia surgery. Methods: Data collection was conducted from August 2020 to January 2021 for a total of 101 participants, consisting of 49 patients and 52 nurses. Independent t-test and Pearson's correlation were conducted using SPSS 21. Results: Anesthesia and OR nurses showed the highest score in patient privacy, followed by patient information management, body privacy, and the lowest score in communication. There was a significant difference between the patient information and the communication. Conclusion: Anesthesia and OR nurses had the highest level of perception and performance of patient privacy protection behavior for body privacy, and the lowest for communication. In addition, there was a significant difference in patient information management and communication. In order to protect the privacy of patients undergoing general anesthesia surgery, efforts are needed to learn standardized nursing knowledge, attitudes, and practice.

• Journal of Korean Academy of Fundamentals of Nursing
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• v.17 no.1
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• pp.109-118
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• 2010

Purpose: This study was designed to examine the relationship between nurses' characteristics and perception of seriousness of elder abuse. Method: A cross-sectional survey design was used to describe the perception of elder abuse by 301 nurses. Data were collected by convenience sampling. The research instruments utilized in this study were 12 scenarios adapted by Yoo & Kim from the 13 senarios to measure the perception of elder abuse developed by Moon and Williams (1993), a seven item questionnaires related to elder abuse law, and a Semantic Differential Scaling to measure attitudes toward elderly people. Data were analyzed with descriptive statistics, t-test, ANOVA and Pearson's correlation. Results: The mean score for perceptions of elder abuse was 3.07. Among the types of abuse, sexual abuse was perceived as the most severe type of abuse followed by physical abuse, neglect, financial abuse, and emotional abuse in that order. Education, job position, experience of gerontological nursing course, and education on elder abuse, exposure to elder abuse information, and attitudes toward elders were significantly related to the perception of seriousness on elder abuse. Conclusions: The results of this study suggest that provision of elder abuse education is needed for nurses, to enable them to identify elder abuse and address their legal and professional responsibilities.

• Korean journal of food and cookery science
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• v.21 no.5
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• pp.637-646
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• 2005

The objectives of this study were, 1) to investigate the perception and preference for Japanese chain restaurants due to demographics and consumption behaviors, and 2) to research improvements for Japanese chain restaurants according to the customers' dissatisfaction. Frequency analysis and one-way ANOVA were used to analyze the data. Three hundred questionnaires were distributed and 254 were returned(84.66%). The customers' perception and preference about Japanese chain restaurants were significantly related with each other. The differences of perception and preference due to demographics and consumption behaviors were significant. The most dissatisfied selection attributes were price, number of Korean dishes, number of branch offices, and advertisements, in order. From examining the progressive circmnstances of Korean food-service industry and the social trends toward a preference for healthy, special ethnic food and dishes for diet control and high protein-low fat, it is apparent that food-service businesses related to Japanese food have the potential for success. The results of this study should provide valuable information for administrators and managers in the hospitality industry.

• Korean journal of food and cookery science
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• v.25 no.5
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• pp.557-563
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• 2009

In this study the perception and consumption of processed meat products by students in food service schools was investigated. The total number of subjects in Seoul and Gangwon province used for this survey was 569. The most preferred processed meat product for students was the fried pork cutlet(17.7%), followed by bacon(11.4%), ham(7.9%) and sausage(7.6%). The main reasons for the consumption of these processed meat products were 'good taste'(52.5%), 'convenience in eating'(18.8%) and 'as the parent buy'(18.8%). The preference for the processed meat products had a relatively high perception value(4.0). However, the effect of consuming processed meat products on nutrition and health had a relatively low perception value(2.9). Reasons for distrusting the processed meat products were attributed to 'bad influence by media'(25.9%) and the 'unsanitary manufacture'(23.6%). In regards to the question about sodium nitrite, most of the students(56.2%) replied that they had 'never heard of it' or 'didn't know it well'. In conclusion, an improvement in public information would be a prerequisite for expanding wholesome use of processed meat products.

• Journal of Korean society of Dental Hygiene
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• v.12 no.1
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• pp.47-55
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• 2012

Objectives : The purpose of this study is to examine relations among the subjective oral symptoms, general characteristics and subject oral health perception of aged people residing in some regions of a large city, ultimately providing basic information needed to develop and implement programs oral health project and oral health education programs for the oral health promotion of those people. Methods : For the above purpose, this researcher conducted a questionnaire survey of people aged 65 or over from July 10th to 28th, 2011. Among the copies of the questionnaire distributed to the subjects, 318 were recollected. Out the recollected forms, 18 which were deemed as inappropriately filled in were excluded, and the remaining 300 were finally analyzed. Results : The results are as follows. Subjective oral symptoms have correlation(p<0.001) with aged people's subject oral health perception. Factors of influencing subject oral health perception were indicated to be age(p=0.021) and trouble chewing(p<0.001). Conclusions : A sustainable oral health management system that aims to improve the oral health of aged people should be developed and implemented. This study may have some limitations to be generalized because it was conducted by focusing on aged people of some regions only.