• Journal of the Korean Society for Library and Information Science
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• v.30 no.2
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• pp.167-188
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• 1996

The lack of an understanding of the characteristics and searching abilities of a specific user group in computer-based information systems in libraries hinders library and information science professionals in making the best decisions when designing, acquiring, and managing information systems. The objective of this study was to provide information on the characteristics and searching abilities of specific groups such as Korean college students & ones who study abroad, male & female, undergraduate & graduate students, etc. This study also has focused on the methods of loaming to use OPACs and non-user study. Questionnaire was administered to both Korean college students in the city of Taegu, Korea and students who study abroad in the state of Texas, US.A. 345 usable questionnaires were obtained and analyzed. These were analyzed using descriptive, inferential statistics, multiple correlation, and SPSS software. The. major findings of this study are: (1) There was a significant difference among specific student user groups except undergraduate and artiste-athlete students in the distribution of their knowledge about how to use OPACs: (2) There was a significant difference among specific groups in the means of their knowledge: (3) There was no significant difference among un. groups in the distribution of loaming method to use OPAC systems : (4) The correlation between the number of searching methods that the respondents knew in using OPACS and the amount of using computers (0.6635) is comparatively higher than my other correlation to the searching methods. Also, years of experience using computers, frequencies of computer use, and frequencies of OPAC use are comparatively higher than frequencies of library use and frequencies of manual card catalog un: (5) Frequencies of manual card catalog use have low negative correlations with the number of searching methods that the respondents knew in using OPACs: (6) Frequencies of manual card catalog use have little if any negative negative with OPAC and computer use. Conclusions are drawn from the findings in this paper, and recommendations an proposed when designing, adopting, or managing a new system. Topics fur future studies on the characteristics of OPAC systems and their use are also suggested.

• The Journal of the Korea Contents Association
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• v.11 no.10
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• pp.217-233
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• 2011

In this study, we have examined how the potential users of IT convergence product use the external information sources for purchasing decision focusing on a case of smartphone. Although the specifications and price of IT convergence products, such as smartphone, tablet pc, and smart TV, are considered as major criteria for purchasing decision, the competitiveness of these factors have disappeared as many companies launch similar products in the market. External information sources play a significant role to differentiate the alternatives by offering value-added experience information. The effect of external information sources becomes stronger for experience and high-involvement product whose performance can be evaluated through only users' direct experience. In this study, we categorized the external information sources for smartphone into five; company ads, personal network, expert group, consumers, and media. Through an empirical study with potential smartphone users, we verified how these external information sources affect users' purchasing decision in the perspective of the perceived attributes of information source, quality of information, and individual's characteristics based on self-regulatory theory.

• Journal of the Korea Academia-Industrial cooperation Society
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• v.18 no.12
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• pp.372-383
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• 2017

This paper attempted to verify that Investigative Enterprising(IE) axis in the Holland hexagonal model can measure the internal and external job value. This study analyzed internal and external job values of 19 subjects who participated in the 150 Job cards classification test. The results of this study are as follows: First, the study group with Holland hexagonal model centered on the Investigative Enterprising type(IE) axis and artistic type(A) and social type(S) showed internal job value and supported the hypothesis. Second, the hypothesis that the group with the hexagonal model centered on the Investigative Enterprising(IE) axis and the bias toward the realistic type(R) and the conventional type(C) would pursue external job value was rejected. This is due to the Korean cultural context that pursues psycho-cultural value in Confucian culture. There is also a Holland hexagonal model that is not exactly distributed to the left of the Investigative Enterprising(IE) axis. Third, the group of amphibolic job value based on the Investigative Enterprising(IE) axis, and the Holland hexagonal model is expressed in artisic type(A), social type(S), realistic type(R), and conventional type(C) supported some hypotheses. This paper is the first to suggest that the Investigative Enterprising(IE) axis of the Holland hexagonal model can be used to measure job value, and the Holland hexagonal model can predict job value as well as career choice. This paper is intended to expand the foundation of the Holland theories, and to provide meaningful contribution to the basis for vocational studies.

• Proceedings of the ESK Conference
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• 1993.10a
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• pp.20-20
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• 1993

반복적인 일의 수행으로 인한 병인 누적외상병에 관해 살펴보고자 한다. 누적외 상병(Cumulative Trauma Disorders)이란 비교적 생소한 질환으로 손이나 어떤 신체 부위를 반복적으로 오래 사용하였을 때 오는 병이다. 이 질환은 200년전 이탈리아 의사인 Benardino Ramazinni에 의해 분류되었으나 최근까지 큰 관심을 끌지 못했 다. 이 병은 Tennis Elbow(테니스 팔꿈치) 또는 Triger Finger(방아쇠 손가락)등 으로 더 잘 알려져 왔다. 그리고 의학계에서는 Ganglions(수종)으로 알려져 왔다. 그러나 80년대의 탁상컴퓨터의 보급으로 많은 사무실에서 반복적인 작업을 연속적 으로 하게 되어 많은 사무원들이 누적외상병(CTD)으로 고통에 시달리게 되고, 심한 경우에는 수술까지 하게된다. 제안자 역시 이 병으로 손목수술을 받은 바 있는 데 이 병은 잠복기가 몇년씩 되는 직업병이다. 이병의 특성상 암과 같이 조기에 발견 하기 어렵고, 이것을 느꼈을 때는 대부분 너무 늦어 수술이 불가피한 경우가 많다. 본 연구에서는 누적외상병의 실체와 현재까지의 외국에서 수행된 연구결과를 소개하고, 현재 한국에서의 이병의 실태를 파악하기 위해 표본대상을 선정하여 설 문조사와 실측조사를 함께 수행하고자 한다. 표본대상으로 육체노동으로 반복작업 을 하는 (Blue-Color) 집단, 사무실에서 반복작업을 하는 (White-Color) 집단, 그리 고 가정에서 반복작업을 하게 되는 주부집단등으로 나누어 실태조사를 하고자 한다. 설문조사의 통계처리를 바탕으로 한국에서의 누적외상병에 관한 실태조사와 의식구 조까지를 진단해 보고자 한다. 그런 다음 총체적이고 최신의 이론과 연구에 바탕을 둔 해결책과 대안을 제시해 보고자 한다.콘에 대해 일반화시키기는 어려우나 이후에 행해질 Icon-based User Interface 분야의 많은 연구들의 기초가 될 것이다. 더불어 아이콘과 관련된 많은 요인들(문화적 영향, 아이콘 색깔, 크기, 아이콘의 위치등이 인식에 미치는 영향)에 대해서도 연구가 행해져야 할 것이다. 확인하고 각각의 기능을 분명히 했다.가 수월하게 하였고 메모리를 동적으로 관리할 수 있게 하였다. 또한 기존의 smpl에 디버깅용 함수 및 설비(facility) 제어용 함수를 추가하여 시뮬레이션 프로그램 작성을 용이하게 하였다. 예를 들면 who_server(), who_queue(), pop_Q(), push_Q(), pop_server(), push_server(), we(), wf(), printfct() 같은 함수들이다. 또한 동시에 발생되는 사건들의 순서를 조종하기 위해, 동시에 발생할 수 있는 각각의 사건에 우선순위를 두어 이 우선 순위에 의하여 사건 리스트(event list)에서 자동적으로 사건들의 순서가 결정되도록 확장하였으며, 설비 제어방식에 있어서도 FIFO, LIFO, 우선 순위 방식등을 선택할 수 있도록 확장하였다. SIMPLE는 자료구조 및 프로그램이 공개되어 있으므로 프로그래머가 원하는 기능을 쉽게 추가할 수 있는 장점도 있다. 아울러 SMPLE에서 새로이 추가된 자료구조와 함수 및 설비제어 방식등을 활용하여 실제 중형급 시스템에 대한 시뮬레이션 구현과 시스템 분석의 예를 보인다._3$", chain segment, with the activation energy of carriers from the shallow trap with 0.4[eV], in he amorphous regions.의 증발산율은 우기의 기상자료를 이용하

• Journal of radiological science and technology
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• v.33 no.3
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• pp.231-237
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• 2010

Computed tomography (CT) has been established as an important diagnostic tool in clinical medicine and has become a major source of medical exposure. A nationwide survey regarding CT examinations was carried out in 2007. Thanks to the appeasement policy regulating the import of CT scanners, there are 1,825 CT scanners across the country as of the end of March 2010, which means that we have 36.8 CT scanners per one million people. The annual number of examinations was 3.29 million, the number of examinations per 1000 population was 68. The most part of examinations was abdomen and pelvis. and the collective effective dose was in these parts. The effective dose per one population was evaluated as 0.952 mSv.

• 한국노년학
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• v.32 no.4
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• pp.1101-1118
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• 2012

The purpose of this study is to examine which factors determine self-rated health(SRH) among Korean elderly focusing on gender differences. To achieve this purpose, it uses the Hallym Longitudinal Study of Aging, wave 4 in 2009. Participants aged 65 and over from wave 4 were selected(N=986, male 407, female 579). From wave 4, all variables were selected except for respondents' education which was from wave1. In analyses, $x^2$ or t-test were conducted to examine whether independent variables significantly differ by SRH. Then, since a dependent variable consisted of two categories-being healthy or not being healthy, logistic regressions were run. What makes gender differences in the link of independent variables to SRH were 75-84 age group, education, and IADLs. For females, 75-84 age group rated their health as worse compared to 65-74 age group, but this age group did not have significant effect on SRH for males. Females graduating from junior high school were more likely to higher rate their health compared to their counterparts. However, education was not significant for males. Instrumental activities of daily living(IADLs) is one of variables affecting SRH by making gender differences. Female having problems with IADLs were more likely to be significantly negatively rate their health compared to males. Through focusing on age, education, IADLs making gender difference in evaluating health, governments needs to support males and females differently.

• Journal of the Korean Chemical Society
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• v.64 no.6
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• pp.429-437
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• 2020

This study investigated a total of 529 integrated science teachers' implementation and changes to apply the curriculum-instruction-assessment. Data was collected through online survey on scientific competencies and skills, teaching-learning and assessment methods, changes of teacher's preparation, topics/materials, teaching-learning, and assessment to apply the curriculum-instruction-assessment as teaching integrated science. The results of the study were as follows: first, in the integrated science class, teachers implemented more on scientific communication and scientific inquiry among scientific core competencies, and analysis and interpretation of data collection and communication among scientific skills. Teachers often taught in lectures and used multiple choice items and short essay for evaluation. Teacher groups with less than 10 years of teaching experience appeared to be less active in teaching scientific core competencies and skills than those with more than 10 years. Second, Teachers have increased more time and efforts to search and to organize various materials in addition to textbooks, and try to integrated concepts in various fields to prepare learning topics and textbooks. Third, even though teachers made little change in implementing the process-oriented assessment, they used instructional strategies to increase student engagement in the integrated science class, restructured the instruction to provide immediate feedback after conducting the assessment. It is necessary to build a system that ensures fairness and credibility of evaluation while respecting the autonomy and professionalism of teachers.

• Journal of Digital Convergence
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• v.19 no.2
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• pp.61-69
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• 2021

The military pension deficit is increasing due to an increase in the average life expectancy and pension option rate, and a significant reason for this is estimated to be a continued increase in the number of military pension recipients. In terms of the soundness of military pension finances, this paper uses the Markov chain model to validate the stability of the military group, suggesting the direction of future military pension system in terms of the ratio of pension receipts to employees, and verifying the feasibility of the method applied through verification. Through this paper, we have confirmed that the initial 45,270 military personnel converge to 43,141 after a certain period of time and reach a stable state, which is expected to help us to estimate the long term size of military pension recipients to confirm the direction of national financial support. Military man who are eligible for pensions for more than 20 years have a relatively low rate of turnover or retirement compared to ordinary private groups, making it easier to define their status and simplify state transition probabilities. Therefore, it is expected that the sustainability of the military pension will be confirmed from a long term perspective by viewing the military group as a system and applying it to the Markov chain model by checking the probability of transfer of status such as promotion, maintaining the current grade, and retirement during the period.

• 한국노년학
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• v.39 no.3
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• pp.485-515
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• 2019

The purpose of this study was to explore bullying among senior women at a senior center. Using ethnographic research technique, we examined the process in which members of the senior center engaged in and responded to bullying. Purposive sampling method was used to choose a senior center as the subject of this study. Within the center, 16 senior women participated in the study. In-depth interviews and participatory research methods were used to collect data. We analyzed the transcripts of the interviews based on the ethnographic analysis method presented by Spradley (1979). Themes that emerged from these participatory research and interviews include: members of the senior center creating loners, people being bullied causing damages to the group, taking actions to respond to bullying, and failing to solve the bullying problems. First, the victims of bullying became loners with no one to rely on through other members' verbal attacks, discrimination, isolation, and stopping the victim to use the senior center. Second, the victims were under attack but also caused troubles at the senior center and harmed others at the same time. Third, while engaging in bullying, senior women attempted to deal with bullying problems in many ways. These attempts include: avoiding the conflict, withstanding, attempting to mediating, and so on. Finally, bullying remained to be a recurring phenomenon at the senior center. New victims of bullying continuously appeared and the influence of bullying was felt not only within the senior center but outside as well. Based on the findings of this study, we suggest that practitioners and researchers take into account factors that affect bullying among senior women.

• Journal of Intelligence and Information Systems
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• v.18 no.4
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• pp.19-42
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• 2012

Consumer consumption patterns are shifting rapidly as buyers migrate from offline markets to e-commerce routes, such as shopping channels on TV and internet shopping malls. In the offline markets consumers go shopping, see the shopping items, and choose from them. Recently consumers tend towards buying at shopping sites free from time and place. However, as e-commerce markets continue to expand, customers are complaining that it is becoming a bigger hassle to shop online. In the online shopping, shoppers have very limited information on the products. The delivered products can be different from what they have wanted. This case results to purchase cancellation. Because these things happen frequently, they are likely to refer to the consumer reviews and companies should be concerned about consumer's voice. E-commerce is a very important marketing tool for suppliers. It can recommend products to customers and connect them directly with suppliers with just a click of a button. The recommender system is being studied in various ways. Some of the more prominent ones include recommendation based on best-seller and demographics, contents filtering, and collaborative filtering. However, these systems all share two weaknesses : they cannot recommend products to consumers on a personal level, and they cannot recommend products to new consumers with no buying history. To fix these problems, we can use the information which has been collected from the questionnaires about their demographics and preference ratings. But, consumers feel these questionnaires are a burden and are unlikely to provide correct information. This study investigates combining collaborative filtering with the centrality of social network analysis. This centrality measure provides the information to infer the preference of new consumers from the shopping history of existing and previous ones. While the past researches had focused on the existing consumers with similar shopping patterns, this study tried to improve the accuracy of recommendation with all shopping information, which included not only similar shopping patterns but also dissimilar ones. Data used in this study, Movie Lens' data, was made by Group Lens research Project Team at University of Minnesota to recommend movies with a collaborative filtering technique. This data was built from the questionnaires of 943 respondents which gave the information on the preference ratings on 1,684 movies. Total data of 100,000 was organized by time, with initial data of 50,000 being existing customers and the latter 50,000 being new customers. The proposed recommender system consists of three systems : [+] group recommender system, [-] group recommender system, and integrated recommender system. [+] group recommender system looks at customers with similar buying patterns as 'neighbors', whereas [-] group recommender system looks at customers with opposite buying patterns as 'contraries'. Integrated recommender system uses both of the aforementioned recommender systems to recommend movies that both recommender systems pick. The study of three systems allows us to find the most suitable recommender system that will optimize accuracy and customer satisfaction. Our analysis showed that integrated recommender system is the best solution among the three systems studied, followed by [-] group recommended system and [+] group recommender system. This result conforms to the intuition that the accuracy of recommendation can be improved using all the relevant information. We provided contour maps and graphs to easily compare the accuracy of each recommender system. Although we saw improvement on accuracy with the integrated recommender system, we must remember that this research is based on static data with no live customers. In other words, consumers did not see the movies actually recommended from the system. Also, this recommendation system may not work well with products other than movies. Thus, it is important to note that recommendation systems need particular calibration for specific product/customer types.