• Journal of Korea Society of Digital Industry and Information Management
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• v.15 no.2
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• pp.19-28
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• 2019

The purpose of this study is to examine the trends on machine learning and deep learning research in the published journals from the Web of Science Database. To achieve the study purpose, we used the abstracts of 20,664 articles published between 1990 and 2017, which include the word 'machine learning', 'deep learning', and 'artificial neural network' in their titles. Twenty major research topics were identified from topic modeling analysis and they were inclusive of classification accuracy, machine learning, optimization problem, time series model, temperature flow, engine variable, neuron layer, spectrum sample, image feature, strength property, extreme machine learning, control system, energy power, cancer patient, descriptor compound, fault diagnosis, soil map, concentration removal, protein gene, and job problem. The analysis of the time-series linear regression showed that all identified topics in machine learning research were 'hot' ones.

• The Journal of the Korea Contents Association
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• v.22 no.9
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• pp.667-677
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• 2022

The purpose of this study is to analyze the structural relationship among the usefulness, ease of use, use intention, and learning utilization of smart learning devices recognized by college students. In order to achieve this, the following problems were addressed: first, how do college students' recognition of ease and usefulness of smart learning devices? second, how do college students' recognition of ease and learning utilization? third, what mediating effects od use of smart learning devices and learning utilization? As for the research method, a survey of 350 students who participated in smart learning was conducted to conduct a home review, confirmatory factor analysis, and bootsrapping for structural equation estimation and mediating analysis. As a result of the analysis on this, first, it was found that the usefulness and ease of smart learning devices recognized by college students had an effect on the intention of use. Second, it was found that the perception of the usefulness and ease of smart devices perceived by college students had an effect on the use of smart learning device learning. Third, it was found that the intention to use smart devices perceived by college students mediated the relationship between usefulness and learning utilization, and it was found that it mediated the relationship between ease and learning utilization. The implications are that instructors can recognize and utilize the intention of using smart learning devices properly by allowing college students to recognize the usefulness and ease of using smart learning devices in the classroom, thereby increasing the learning utilization of smart learning devices in class. In addition, efforts are needed to enable college students to recognize the usefulness of smart devices and to expand the use of learning.

• Journal of the Korea Institute of Information Security & Cryptology
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• v.18 no.6A
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• pp.27-37
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• 2008

In the traditional signature techniques, anyone can verify the signed message. It may cause a problem since a receiver of the signature can transfer the conviction of signature to a third party. In 1996, Jakobsson introduced a designate verifier signature(DVS) which is allowed to verify only specific verifier. DVS is the solution of conflict between authenticity and privacy because it provides message authentication without non-repudiation property. In this paper based on the notion of certificateless, we suggest a certificateless strong designated verifier signature scheme including the notion of strong which provides privacy of the signer. We suggest a scheme which is first trial to propose a certificateless strong designated verifier signature scheme including the notion of strong and non-delegatability, although it is not more efficient than previous one.

• Journal of the Korea Institute of Information Security & Cryptology
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• v.21 no.1
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• pp.3-14
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• 2011

In recent days, people used to store and share the data with other users through the web storage services. It is more convenient for using the data, but it raise problems such as access control of stored data and privacy exposure to untrusted server. Searchable encryption is used to share the data securely in multi-user setting. Especially in the multi-user setting, the revoked users should not be able to search the data and access the stored data. That is, it should be considered the security from revoked users. However in the existing schemes, the revoked users can decrypt the shared data by passive attack. Proposed scheme is the secure searchable encryption that resolves the problem and guarantees the security for revoked users.

• Journal of The Korean Association For Science Education
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• v.20 no.3
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• pp.443-454
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• 2000

The compilers of science textbooks during the enlightenment period of Korea had been active in teaching and writing of science education. Thus a research on their social and educational backgrounds would help us to understand the historical process of the formation of Korean science education. In finding out their backgrounds, the official government resumes and the bulletins of an academic society were used. It was found that seven compilers of science textbooks, with their known resumes and bulletins, studied in Japan and another six studied in Korea. However, most students who studied in Japan with the support from Korean government returned to Korea and took an active part in education. In the first place, they had written the scientific articles in the bulletins. Then, they published school textbooks, including science textbooks. However, their roles in the science education replaced with the Japanese teachers with the lapse of time. Furthermore, since they were rather specialists in translation than in subject matters and studies applied sciences in technical colleges, they did little to foster science and could not form a firm basis for an independent internal structure of science education in Korea.

• Journal of Convergence for Information Technology
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• v.10 no.6
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• pp.96-108
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• 2020

Through the case analysis of the college start-up education consulting operated by the Center for Start-up Education, this study presented the direction of Uni. start-up education, such as regular subjects, comparative studies, commercialization of start-up businesses, and supporting infrastructure, and understood the meaning of start-up education. This study was conducted in three stages of literature research at 10 universities, pre-diagnosis questionnaire for practitioners, and visiting consulting, and presented design direction by separating universities (four-year colleges) and colleges of specialties. Universities (four-year colleges) need to make continuous efforts to create a specialized start-up valley for universities and start-up businesses using infrastructure with existing quantitative growth, and colleges need to establish professional and infrastructure for start-up education to suit the characteristics of their departments. In addition, it was urgent to introduce differentiated evaluation indicators for universities (four-year colleges) and colleges.

• Journal of the Korea Academia-Industrial cooperation Society
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• v.20 no.7
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• pp.173-181
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• 2019

The purpose of this study was to identify the effects of gender role conflicts, professional nursing value on career preparation behaviors of male nursing university student. Data were collected from 127 male nursing university student in grade 2-4 by using structured questionnaires from July 1 to November 30, 2018. The collected data were analyzed by descriptive statistics, independent t-test, ANOVA, Pearson's correlation coefficients and stepwise multiple regression by using SPSS Win 24.0 program. Multiple regression analysis showed that the predictors of career preparation behaviors were professional nursing values(${\beta}=0.28$, p=.001), satisfaction with major (${\beta}=0.23$, p=.006), club(${\beta}=.19$, p=.020) and the regression equation explained 20.8% of career preparation behaviors. Based on the results of this study, it is necessary to provide career educational programs considering according to the academic year of male nursing students and to develop educational programs to improve the nursing professionalism of male nursing students.

• The Journal of the Korea Contents Association
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• v.21 no.10
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• pp.668-678
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• 2021

This study aimed to identify the factors influencing the clinical competence of nurses, using a descriptive correlational study design. Data were collected through questionnaires administered to 170 nurses working in a general hospital in Gwangju city and Jeollanam-do province from March 24 to May 27, 2021. There were significant differences in clinical competence according to age, marital status, and educational level. Clinical competence was significantly correlated with nursing professionalism (r=.600, p<.001), critical-thinking disposition (r=.568, p<.001), communication skills (r=.658, p<.001), and nursing practice environment (r=.353, p<.001). Factors influencing clinical competence were communication skills, nursing professionalism, critical-thinking disposition, and age, which explained 54.0% of the total variance. It is necessary to develop educational programs to improve the communication skills, nursing professionalism, and critical-thinking disposition of nurses. Additionally, Institutional and national measures are needed so that nurses can continue to work in hospitals.

• Korean Journal of Environment and Ecology
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• v.35 no.3
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• pp.237-255
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• 2021

Lychnis wilfordii (Regel) Maxim. is one of the wetland specialists mainly distributed in peatlands at high latitudes. In Korea, it is isolated in two regions. This study investigated habitats, growth traits, and self-compatibility of L. wilfordii and assessed the internal dynamics of its population persistence. Its population has remained stable in the Yongneup Wetland Protected Area (YWPA). There was a clear difference in vegetation environment between YWPA and the distribution area in Daegwallyeong (DWL), Pyeongchang-gun. It has self-compatibility while pollinators facilitate its seed production. It produces a large number of hibernacles and bears the maximum number of branches and fruits in soil with rich organic contents. However, it grows and bears fruits even under the condition of low organic contents. In YWPA, L. wilfordii is not distributed in high moor but widely distributed in low moor where tussocks by Carex thunbergii var. appendiculata are developed. It is mainly distributed on the top of tussocks also. Therefore, it is judged that the formation, growth, and extinction of tussocks by C. thunbergii var. appendiculata is closely related to the establishment, growth, and extinction of plants distributed in this space. It is assessed that the current YWPA has well-developed tussocks in which L. wilfordii is widely distributed, and extinction and re-establishment progress well. Accordingly, the L. wilfordii population is expected to be sustainable in the long term given if its current ecological process is maintained well.

• Journal of the Economic Geographical Society of Korea
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• v.26 no.3
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• pp.238-255
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• 2023

In this study, we derived the characteristic factors of the cluster as measurable variables, and attempted to clarify the characteristics of the apparel sewing areas in Changsin-dong, Doksan-dong, and Jangwi-dong. Based on these results, a comparative analysis was conducted to see how the demand for the government's support policy differs for each agglomeration area. Materials were collected through face-to-face questionnaires targeting tenant companies in the three regions. As a result of the analysis, Changsin-dong was identified as an "innovative growth type," Doksan-dong as a "networking type," and Jangwi-dong as a "specialized localization type." As a result of the research on policy demands, the policy demands of the three agglomerations appeared different, but Changsin-dong preferred capacity building, Doksan-dong preferred information provision, and Jangwi-dong favored policy means of benefit. It was confirmed that even among clusters of the same apparel sewing industry, the formation process and characteristics are different, and as a result, the demand for policy instruments is also different. Policy recommendations include understanding the characteristics and policy demands of each agglomeration area through periodic fact-finding surveys, and recommending the establishment and implementation of differentiated support policies that match the characteristics of each agglomeration area.