• Journal of Korean Ophthalmic Optics Society
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• v.19 no.4
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• pp.457-469
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• 2014

Purpose: This study was to evaluate students and optometrist in the importance and difficulty of work capability, and the educational needs for optometric duty in order to use them as basic data for the improvement of the curriculum. Methods: 292 ophthalmic optic's college students and 123 optometrists were surveyed in the importance and difficulty of work capability, and the educational needs for the optometric duty, and data was statistically analyzed for the results. Results: The mean of the importance of work capability was higher for the optometrists (3.61) than for the students (3.51) and glasses dispensing was the highest for both students and optometrists. The mean of the difficulty of work capability was higher for the students (2.75) than for the optometrists (2.67), which was the highest in refraction for the students and in prescription for the optometrists. The mean of educational needs was higher for the optometrists (3.53) than for the students (3.45), which was the highest in glasses dispensing for the students and highest in refraction for the optometrists. There were significant differences in some tasks in between the students by gender, grade and desired working place, while between the optometrists by gender, age, work experience, working place and working area (p<0.05). Conclusions: It is necessary to improve a curriculum of the Department of Opthalmic Optics, and develop a standard curriculum reflected the importance and the difficulty of work capability, and the educational needs regarding to optometric duty.

• The Journal of the Korea Contents Association
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• v.9 no.7
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• pp.371-378
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• 2009

A lot of learning systems are applying and verify evaluating the item difficulty to increase learner's learning effect. But most of this methods ware calculated the item difficulty when it analyze the learning result before or after learning. So, it is hard to support learning contents with changing item difficulty during learning to learner. In this research, we proposed the method that system can support learning contents to next learning to fit leaner's level immediately as apply to calculate item difficulty during the proceed learning. Through this method, learner could supported learning contents by calculated difficulty through pre-test and it caused this method was helped learner to increase learning effect.

• Proceedings of the Korea Information Processing Society Conference
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• 2018.10a
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• pp.321-322
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• 2018

본 연구에서는 학습자의 프로그래밍 학습능력을 향상시키기 위하여, 학습효과에 영향을 미치는 교수 전략을 규명하는 것을 목표로 하였다. 프로그래밍 학습효과에 영향을 미치는 교수전략으로는 진도 적절성, 난이도 적절성, 교수자의 개입수준, 유머 사용으로 측정하였으며 학습효과는 성취도와 만족도를 측정하였다. A 전문대학의 컴퓨터공학과 110명의 학생을 대상의 설문을 실시한 후 학습효과에 대한 교수전략의 영향을 분석한 결과, 난이도 적절성이 성취도에 영향을 끼치며, 난이도 적절성과 교수자의 개입수준이 수업만족도에 영향을 미치는 것으로 규명되었다. 이에 따라 프로그래밍의 학습효과를 향상시킬 수 있는 시사점을 제안하였다.

• Journal of Digital Contents Society
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• v.8 no.4
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• pp.531-539
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• 2007

An advance in digital technologies and an introduction of HDTV contents production systems have made innovative changes in a TV broadcasting program and video production environment. The role of HD contents production experts is particularly getting more important to have a competitiveness in digital video production. It is necessary to develop a professional training and reeducation program that is based upon the perception of production experts. In this paper, we ed the perception of video production professionals and analyzed their requirements. With a DACUM job analysis method, 9 job duties and 71 tasks were retrieved to establish a research model. Then the performing frequency, importance, and difficulty in video editor's duties were analyzed and discussed.

• Communications for Statistical Applications and Methods
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• v.17 no.3
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• pp.327-335
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• 2010

Item response theory provides a fixed results about students, regardless of the item difficulty and discrimina-tion and it is also a kind of item analysis methods which provides the same proper competence scores to students in spite of them taking different test repeatedly. In this paper, we researched item difficulty and item discrimina-tion and analyzed items in the national academic aptitude test which were given from 2000 to 2009 in the past 10 years through item response theory, especially, in connection with given items about statistical unit. As a result, we found that about 60 percents of the items were too difficult for high school students to solve, however, item discrimination proved to be great.

• 대한공업교육학회지
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• v.44 no.1
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• pp.114-140
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• 2019

The purpose of this research is to analyze a principal's job at a Vocational High School using DACUM Task Analysis Method. The contents of this research are to set the order after deriving the duties and tasks of the principal., then to verify as the importance, difficulty, and frequency of each task, and also to indicate whether it is an essential capability to have in the early stages of one's duty. Finally, based on the job analysis results, a DACUM chart was developed by the principal of the Vocational High School. The DACUM Task Analysis Workshop was attended by one DACUM analyst with LEVEL - 1 license, seven DACUM members with more than four years experience, one secretary and two administrative assistants for a two-day period. The results of the research are as follows; First, the Vocational High School Principal is defined as a school administrator who operate the vocational education curriculum of in the specialized and customized high schools of industrial demand development and the job area. The analysis derived 11 duties and 95 tasks of the Principal. Second, the importance, difficulties, and frequency of each task were divided respectively into high (A), moderate (B), and low (C), and the consensus of the experts was made to determine whether the core capabilities are acquired early on the job. Third, based on the analysis results, a DACUM Task Analysis chart of the Vocational High School principals was presented. In addition, while engaged on the job of the vocational high school principal, a list of 49 general knowledge and abilities, 16 tools, Integrated data and fixtures are required. Along with 28 attitudes 33 future prospects and characteristics of the Vocational High School principal was presented.

• The Journal of the Korea Contents Association
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• v.16 no.8
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• pp.160-168
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• 2016

The classification and evaluation of cooking that is being published on the internet are presented without scientific criteria based on individual subjective factors. In this paper, we objectified the degree of cooking difficulty based on the information entropy. And we measured the similarity by calculating the common entropy between recipes and constructed a social network based on the recipe similarity. As a result of measuring the cooking difficulty, 'Dongtae Haemul-jjim' (Korean) and 'Vegetarian Lasagna' (Italy) are the most difficult recipes and 'Gochu-jang' (Korean) and 'Tofu steak' (Italy) are the easiest recipes. Through the recipe network, the similarity between Korean and Asian cooking is higher than Western cuisine. We showed a similar recipe to a particular cooking, the group of similar recipes, and reasonable schedule when preparing the menu from the viewpoint of ease of cooking.

• Journal of Korean Elementary Science Education
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• v.42 no.4
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• pp.513-522
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• 2023

There is a lack of empirical research on the level of students' state anxiety according to their perceived task difficulty when confronting science questions. This study seeks to investigate whether perceived task difficulty moderates the process of arousing students' state anxiety in science learning. In pursuit of this objective, we engaged 410 fifth- and sixth-grade elementary school students (186 fifth graders; 194 females) in solving two science questions. We then verified the moderating effect of perceived task difficulty on the relationship between science anxiety and state anxiety arousal when confronting science questions using the PROCESS Macro Model 1. Results confirmed that science anxiety and perceived task difficulty significantly and positively predicted state anxiety. Notably, perceived task difficulty had a significant moderating effect on the process of arousing state anxiety, where lower perceived task difficulty led to a greater increase in state anxiety after confronting the science questions. We discuss the implications of the findings for science education and propose potential directions for future research.

• The Journal of Engineering Geology
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• v.4 no.1
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• pp.43-55
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• 1994

Two thematic maps on environmental geology were produced in the Cheong-Ju area, with aids of GIS technique. They are landslide hazards & risk maps and cut-fill maps. The models of environmental geology map and digital database were established for creation of these maps by means of cartographic simulation in GIS. These special maps are very important for understanding the environmental characteristics of the study area, and can be applied in the establishment of the regional land use planning. For instance, the landslide hazard and risk map can play very important role in the road design, and cut- fill map in the construction work in the area. The scoring system for landslide analysis was developed through the evaluation of each environmental geologic factor in relation to the others and reflects the relative imporatance of each factor. The excavation index(easy, intermediate and difficult) was evaluated through cut-fill analysis, and they can be very useftil for assessing the degree of excavation difficulty.

• The Journal of the Korea Contents Association
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• v.15 no.10
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• pp.354-361
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• 2015

The purpose of this study is to investigate validation of the Recovery Assessment Scale(RAS) for Korean Version using Rasch analysis. This study included 60 patients who had chronic schizophrenia and were aged 18 or older. The data were analysed using a Rasch analysis to investigate whether the persons and items fit, the distribution of item difficulty and the appropriateness of the rating scale. 1 out of 60 subjects were found to not fit. 3 out of 24 items were also found to be misfit. The misfitted items was 'I believe that I can meet my current personal goals','Even when I don't care about myself, other people do. ','Coping with my mental illness is no longer the main focus of my life.'. Of the appropriate items, the most difficult was 'I can handle what happens in my life' and the easiest was 'Something good will eventually happen'. The RAS rating scale was shown to be appropriate for patients who had chronic schizophrenia. The item separation reliability was .70, and the person separation reliability was .94. Further studies are needed to investigate validity and criterion cut-off score for many patients with chronic mental illess.