• Journal of the Korea Institute of Information Security & Cryptology
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• v.11 no.4
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• pp.15-31
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• 2001

In this paper we classify security threat elements of satellite communication into four parts; Level-0(satellite propagation signal), Level-1(satellite control data), Level-2(satellite application data) and ground network security level according to the personality and data of the satellite communication network. And we analyze each security levels. Using analyzed security threat elements, we divide security requirements into signal security level and information security level separately. And then above the existent signal security level countermeasure, we establish the countermeasure on the basis of information security policy such as satellite network security policy, satellite system security policy and satellite data security policy in information security level. In this paper we propose secure satellite communication network through the countermeasure based on information security policy.

• Journal of Korean Academy of Nursing
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• v.28 no.3
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• pp.801-809
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• 1998

This study was carried out the group communication program which I had composed of using the Satir's communication family theory and skills. The purpose of this study was to investigate the effects on the dysfunctional communication self-esteem and depression, executed this program for the mothers group with caring the mental disorders. and then for the test of some hypotheses it was devided two groups ; the experimental group(n=20) and control group(n=25). In the control group they were learned two session family education program in the psychiatric clinics of Pusan National University Hospital and in the experimental group they had experienced during the 10 session by the group communication program. In the methods of the statistics on this datas, it was to statistics X²test for the comparison between the experimental group and control group with general characteristics. The effect of the Group Communication Program was to analyse ANCOVA between pre-post test on the disfunctional communication, self-esteem and depression in the control group and experimental group. The conclusions were derived from the results and test of hypothesis as followings ; 1) The results were tested the differentiation between the experimental and control group, and the pre-post test in the experimental group with dysfunctional communication self-esteem and depression. Some hypothesis were tested and supported as followings : It was supported that the level of dysfunctional communication of the experimental group would be lower than the control group (Hypothesis 1) It was supported that the level of self-esteem of the experimental group would be higher than the control group (Hypothesis 2). It was supported that the level of depression of the experimental group would be lower than the control group (Hypothesis 3). 2) The relation of the dysfunctional communication with the self-esteem was presented negative correlation and with the depression was not correlation. The relation of the self-esteem with the depression was presented significantly negative correlation. The relation of the sacrificuny pattern of dysfuntional communication with the self-esteem was presented negative correlation and with the depression positive correlation.

• Journal of Convergence for Information Technology
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• v.12 no.2
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• pp.30-36
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• 2022

In this paper, when the lighting and communication functions of the visible light communication system are used at the same time, we propose a technique to reduce the dimming level and flicker of the lighting. Visible light communication must satisfy both communication and lighting performance. However, the existing data code method results in reducing the brightness of the entire lighting. This causes deterioration of lighting performance and flicker phenomenon. To solve this problem, in this paper, we propose an adaptive learning code allocation technique that allocates binary codes to transmitted characters and optimizes and matches the binary codes allocated according to the frequency of occurrence of alphabets in character strings. Through this, we studied a technique that can faithfully play the role of lighting as well as communication function by allocating codes so that the 'OFF' pattern does not occur continuously while maintaining the maximum dimming level of each character string. As a result of the performance evaluation, the frequency of occurrence of '1' increased significantly without significantly affecting the overall communication performance, and on the contrary, the frequency of consecutive '0' decreased, indicating that the lighting performance of the system was greatly improved.

• Korean Journal of Human Ecology
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• v.9 no.3
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• pp.283-295
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• 2000

The purpose of this study was to examine the relationships among parent-adolescent communication, adolescents self-esteem, social development, and home environment. Home environment includes sex, father's vocations, mother's employments, parents educational level, and religions. 275 adolescents (186 males and 89 females students) were selected from middle schools in Seoul. The results indicated that there was no significant difference in parent-adolescent communication, adolescents self-esteem and social development according to environmental factors, such as parents' age, educational level, and religions. Also adolescents self-esteem was highly correlated with parent-adolescent communication, especially with mother-adolescent open communication. Finally, adolescent development of sociality was highly correlated with parent-adolescent communication, but not significant relationship with mother-adolescent reverse-functional communication.

• Korean Journal of Human Ecology
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• v.3 no.2
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• pp.1-12
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• 2000

The purpose of this research was to investigate the relationship of family related variables with adolescents'delinquent behaviors. Family related variables were consisted of (a) family's general characteristics (j.e., occupation, income, etc.) and (b) family relationship charateristics (j.e.. parents'child rearing attitude, parents' marital relationship, and communication level between parents and adolescent children) . Adolescents'delinquent behaviors were also analyzed according to adolescents'general charateristics such as sex, grade, birth order, school achievement level, and religion. The data were collected from 577 middle and high school students in Chonju by using self-administered questionnaire method. Results showed that there were significant differences in the frequency level of adolescents'delinquent behaviors across adolescents'sex, grade, birth order, school achievement level, and religion, and across mother's occupation. and subjective living level. The delinquent behaviors were also negatively correlated with most of family relationship characteristics. Results of multiple regression analyses indicated that communication of adolescent children with their father and mother's child rearing attitude were most significant variables influencing adolescents'delinquent behaviors.

• Proceedings of the IEEK Conference
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• 2002.07c
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• pp.1736-1739
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• 2002

The advanced in semiconductor, hardware, and software technologies enables the integration of more com- plex systems and the increasing design complexity. As system design complexity becomes more complicated, System-level design based on the If block and processor model is more needed in most of the RTL level or low level. In this paper, we present a novel approach fur the system-level design, which satisfies the various required constraints and an optimization method of image encoder based on codesign of function, algorithm, and architecture. In addition, we show an MPEG-4 encoder as a design case study. The best tradeoffs between algorithm and architecture are necessary to deliver the design with satisfying performance and area constraints. The evaluations provide the effective optimization of motion estimation, which is in charge of an amount of performance in the MPEG-4 encoder module.

• Journal of Families and Better Life
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• v.27 no.2
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• pp.29-43
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• 2009

This study proposes to implement premarital education programs designed to enhance potential capacity in marital life, targeted at marriage expectant couple and verify the effectiveness of the programs. For this study, 8 marriage expectant couples residing in Seoul participated. For this study, advance and follow-up surveys were conducted. To be specific, the advanced surveys questions were posed regarding general features, the level of communication, conflict-resolution skills and the attitude toward the role of the gender and so forth of those persons polled. In follow-up surveys, questions were asked regarding the extent to which the participant was satisfied with the contents of the education and teaching process in each session of the programs, the attitude toward the role of the gender, the level of communication and conflict-resolution skills. The effectiveness of the program was verified based on the subjective level of satisfaction of the instructor and the program manager and the statistical analyses of advance and follow-up surveys. Our findings show: First, the changes in 'the attitude toward the role of the gender' of the participants after 'the education of the role of the gender' were not significantly related. Second, after 'the education of communication' was implemented, the capability of the participants to communicate proved to have improved. Third, the extent to which the participants were satisfied with the contents of the education scored higher than the average, the level of educational satisfaction with 'the skills of communication between the husband and wife' scoring the highest. Fourth, with respect to the level of overall satisfaction with the educational effects of the program, the level of satisfaction with improved relationship between each party of the couple turned out relatively high, and the level of the overall education program also proved to be high.

• Journal of the Korean Society of School Health
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• v.26 no.2
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• pp.62-71
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• 2013

Purpose: This study was conducted to examine the level of communication, problem-solving, and self-directed learning competencies, academic and English achievement of healthcare major students in university and to determine the effect of three main competencies on their academic and English achievement. Methods: The participants were college students studying in health care related major at a four-year university in D-city who agreed to participate in this study. Some of their data were intentionally excluded as their answers were incomplete or missing and finally 272 surveys were analyzed. Results: It was found that they have high level of general life competencies of which the subcategories are communication, problem-solving, and self-directed learning competency. GPA and TOEIC score which are the indicators of academic and English achievement were found to be correlated with the level of three competencies. Self-directed learning competency is assumed to be main cause variable of these achievement. Conclusion: As those students who have higher academic and English achievement also show high level of communication, problem-solving and self-directed learning competency. It is argued that a new curriculum that can contribute to improve communication, problem-solving and self-directed learning competency should be developed and implemented.

• International Journal of Contents
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• v.3 no.2
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• pp.1-5
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• 2007

This paper proposes a technique for principal component analysis (PCA) to raise the recognition rate of a front face in a low dimension by hierarchical image and parallel processing structure. The conventional PCA shows a recognition rate of less than 50% in a low dimension (dimensions 1 to 6) when used for facial recognition. In this paper, a face is formed as images of 3 fixed-size levels: the 1st being a region around the nose, the 2nd level a region including the eyes, nose, and mouth, and the 3rd level image is the whole face. PCA of the 3-level images is treated by parallel processing structure, and finally their similarities are combined for high recognition rate in a low dimension. The proposed method under went experimental feasibility study with ORL face database for evaluation of the face recognition function. The experimental demonstration has been done by PCA and the proposed method according to each level. The proposed method showed high recognition of over 50% from dimensions 1 to 6.

• International Journal of Contents
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• v.11 no.3
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• pp.24-33
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• 2015

Against the backdrop of Habermas' theory of communicative action, we empirically analyzed the level of interactivity and narratives offered in nation-states' ministry of foreign affairs Web sites. A multiple regression analysis was performed in an attempt to identify factors affecting the level of interactivity in such Web sites. Findings revealed that the level of economic development is the sole significant factor in regards to the level of interactivity. Further, self-interested, goal-directed, and strategic purposes behind the allegedly transparent, engaging, and interactive public diplomacy were evidenced through a critical analysis of the objectives, key issues, and target publics addressed and highlighted in the public diplomacy narratives on the Web. The results suggested a possible digital divide in the interactive adoption of Web public diplomacy as well as strategic motives and interests embedded in the public diplomacy communication on the Web. This study helps increase our understanding of the paradox of public diplomacy in the digital age.