• Proceedings of the Korean Society of Computer Information Conference
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• 2022.07a
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• pp.39-42
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• 2022

쌀을 주식으로 하는 우리나라에서, 쌀의 가격에 영향을 미치는 변수를 찾는 것은 유의미한 연구이다. 본 논문에서는 쌀 가격을 예측하는 모델에 포함되는 여러 변수 가운데 상대적인 중요도가 낮은 변수를 제거하고 유의미한 변수만을 남기고자 한다. 이를 위해 기상, 수확량, 소비자물가의 10년 치 정보를 수집하고 정제한 결과 총 2460일, 7개 지역에서 추출된 17,219개의 데이터를 이용하였다. 모델 평가 결과, 모든 변수를 포함한 모델의 RMSE는 166.0759, 단계적으로 계수가 작은 9개의 변수를 제거한 최종적인 모델의 RMSE는 168.5576으로 유의미한 차이를 보이지 않았다. 최종적으로 남은 변수는 총 10개로 평균 기온, 평균 풍속, 합계 일사, 평균 지면 온도, 0.5M 평균 습도, 4.0M 평균 습도, 10CM 일 토양 수분, 30CM 일 토양 수분, 50CM 일 토양 수분, 전년도 생산량이 포함된다.

• Informatization Policy
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• v.24 no.1
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• pp.48-78
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• 2017

In this study, to reveal determinant factors for degree of open data it conduct empirical analysis for ODB(Open Data Barometer) and OUR Index(Open, Useful, Reusable Government Data Index) that are global open data index among 26 countries. As a result of multiple regression analysis, First focus is on ODB. In the Model 1 with independent variables, e-Government, SW Market size and government efficacy are significantly positive effect for ODB. In the Model 2 with independent variables and moderating variable, e-Government, SW market size and social capital are significantly positive effect for ODB. In the Model 3 with independent variables, moderating variable and interaction term, e-Government and social capital are significantly positive effect for ODB. Second focus is on OUR Index. In the Model 1 and the Model 2 e-Government is significantly positive effect for OUR Index. In the Model, e-Government and SW market size ${\times}$ social capital(interaction term) are significantly positive effect for OUR Index. And in path analysis, only ODB alternative model show Government efficacy with social capital has full mediation effect. In OUR Index alternative model there is no mediation effect with social capital.

• Korean Journal of Social Welfare
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• v.37
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• pp.33-66
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• 1999

The primary objectives of this research is to identify (1) demographic characteristics and job needs of women with disabilities in Korea and (2) factors that predicts the degrees of their job needs. This study uses the data based on interviews with 805 disabled women selected randomly from the registered disabled women in Seoul, Kuyngki-Do, Pusan, and Kuyngsangnam-Do. In the aspect of disabilities, this study showed that more than half of disabled women in our sample have very severe disabilities (1st degree and 2nd degree of disabilities) and needs others' help in their daily lives. In the demographic aspect, this study found that disabled women's education level is very low and their monthly income is also very low. This study also found that in spite of their disabilities and functional limitations, more than 3/4 of disabled women have needs about jobs. Finally, using logistic regression analysis, this study found that disabled women's type of disabilities, dependencies in daily life, age, job experiences, job training experiences, willingness for independence, and parental attitude about disabled women's future are statistically significant in predicting the degree of their job needs. This study will contribute to developing knowledge about disabled women's characteristics and provide practical implications for intervention strategies and assistance programs related to promoting their welfare.

• Journal of Digital Convergence
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• v.13 no.6
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• pp.55-67
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• 2015

The purpose of this study is to consider the effect of the Culture and Education Activities on the psychological well-being Convergence Formation of the Elderly. This study is based on the quantitative research of 255 older adults who have participated on the Culture and Education Activities programs run by welfare center and culture center for the elderly at Seoul area. The results are as follows. First, social Goal-Oriented and Activities-Oriented have effect on Life- Satisfaction. Second, Activities-Oriented and Learning-Oriented has effect on Self-Efficacy. Third, Activities-Oriented and Learning-Oriented has effect on Participation-Attitude. Fourth, but relations of the Learning-Oriented and Life-Satisfaction, Goal-Oriented and Self-Efficacy, Goal-Oriented and Participation-Attitude were independent of each other. This study can be use to propose policies related to the elderly welfare promotion.

• Journal of Digital Convergence
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• v.13 no.6
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• pp.39-53
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• 2015

The purpose of this study is to consider the effect of the volunteer participation motivation of the elderly on the convergence formation of the social capital. This study is based on the quantitative research of 390 older adults who have participated on the volunteer programs run by welfare center and culture center for the elderly at Incheon area. The results are as follows. First, social responsibility and self-realization (independent variables) have effect on social trust(dependent variable). Second, self-realization(independent variable) has effect on social participation(dependent variable). Third, but social activity(independent variables) have not effect on social trust and social participation(dependent variable). This study can be use to propose policies related to the social activity for the elder's good life.

• Journal of Digital Convergence
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• v.14 no.6
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• pp.425-430
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• 2016

The goal of this study is to explore the factors that influence on intention to use UHDTV Service. Research problems has been designed to Structural equation model by Technology Acceptance Model. The Perceived quality, Price sensitivity, Innovativeness are adopted as independent variables. And Perceived usefulness, Perceived ease of use are adopted as intervening variables. A result of analysis, Perceived quality and Price sensitivity influenced the Intention to use via Perceived usefulness and Perceived ease of use. But in case of Innovativeness, it did not influence the Perceived usefulness while it influenced the Perceived ease of use. Meanwhile, the influence of Perceived quality to Perceived usefulness had more impact than the other path between the other factors.

• Journal of the Korea Society of Computer and Information
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• v.14 no.10
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• pp.141-148
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• 2009

This paper studies important factors of mobile phone marketing including experiences on entertainment, information, reliability and complaints by analyzing actual materials. The result shows that information, reliability, experiences are more significant than other factors. In case of information, the appropriate message is associated with marketing activities. Reliability and benefit on advertisement are significant. Also, experience has a positive effect on marketing activities. Therefore, this study suggests that mobile marketing should consider significant factors such as information, reliability, and experience.

• Korean journal of communication and information
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• v.46
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• pp.212-244
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• 2009

This study examined the effects of cultural factors and demographic factors on the perceived appropriateness and likelihood of using five categories of inappropriate negotiation strategies. Five categories of inappropriate negotiation strategies consist of traditional competitive bargaining, attacking opponent's network, false promises, misrepresentation of information and inappropriate information gathering. Two kinds of cultural variables, Hofstede's cultural dimensions and 'Chemyon' dimensions were used as universal, etic variables versus indigenous, emic variables. Survey result shows age and gender had significant effects only for traditional competitive bargaining, but gender and personal negotiation style did not have any effects for the inappropriate strategies. Hofstede's dimensions as well as Chemyon dimensions had significant effect for perceived inappropriateness and likelihood of using inappropriate strategies. While both Chemyon and Hofstede's dimensions were significant, Chemyon accounted for more variance than Hofstede dimensions in most cases. This suggests Chemyon's vital role in explaining Korean negotiators' perception and attitude towards inappropriate negotiation strategies. Implications of the results and future research are discussed.

• Journal of the Korean Geographical Society
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• v.50 no.3
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• pp.355-373
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• 2015

In this study the factors of fire damage are analyzed through previous research reviews. Local environmental factors as well as those factors attributed to fire damage (number of fire events, number of injured, number of death, economic loss) were selected to compose mutual relationship model. In order to verify this relationship model, official statistics concerning fire damage were collected from 228 local governments and compared with results from previous research. As a result of this comparison four dependent variables and 22 independent variables that affect fire damage were analyzed. Independent variables are divided into human vulnerability factors, physical vulnerability factors, economic vulnerability factors, mitigating factors and local characteristics. To analyze a relationship between selected dependent variables and independent variables, we applied a semi-logarithm model and performed regression analysis. Among the 22 independent variables, the number of the weak to disaster, social welfare service workers, workers in manufacturing industry, and the number of workers in restaurants and bars per 10,000 people show the significant correlation with the number of fire incidence. The number of death from fire is significantly related to two variables which are the number of social welfare service workers per 10,000 and the ratio of commercial area. Damage cost is significantly dependent on the property taxes per 10,000 people. These factors were included in the research model as vulnerability factors (human, physical, economic) and mitigating factors and local characteristics, and the validity of research model was verified. The result could contribute to fire-fighting resource allocation in Korea or they can be utilized in establishing fire prevention policy, which will enhance the national level of fire safety.

• Korean Journal of Social Welfare Studies
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• v.42 no.3
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• pp.355-379
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• 2011

The purpose of this study is to reveal the similarity and difference by comparing the quality of life between senior citizen group and disabled people group. For this purpose, I surveyed the questionnaire composed of sociological variable of population, social support, society activity participation, activity of daily living, self-efficacy, and quality of life to 113 senior citizens and 107 disabled people and analyzed the actual proof relationship of cause and effect in between variables. I executed the analysis of structural equation model by using SPSS 14.0 and AMOS 7.0 for the analysis of data. As the result of the study, firstly, the variables highly co-related with the quality of life to both senior citizen group and disabled people group were self-efficacy and society activity participation, and the variables highly co-related with self-efficacy were the quality of life and society activity participation. Secondly, the variables which show the meaningful difference between senior citizen group and disabled people group were society activity participation and activity of daily living. Thirdly, in the senior citizen group, social support, society activity participation, and activity of daily living have meaningful effect on self-efficacy, and all variables have meaningful effect on the quality of life. However, in the disabled people group, social support did not have meaningful effect on self-efficacy, and the social support and self-efficacy did not have meaningful effect on the quality of life. Based upon these study results I discussed the meaning and implications of the study, and suggested the successive study tasks.