• Journal of the Korean Home Economics Association
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• v.47 no.9
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• pp.37-53
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• 2009

The purpose of this study was to assess the effects of a children sexual abuse (CSA) parental training program with applied developmental bibliotherapy on parents. Subjects were 54 mothers, 24 of whom participated in the program which included 8 sessions for 4 weeks. Four dependent variables were subjected to analysis of covariance (ANCOVA); mothers’ knowledge, myths and stereotypes related to CSA, and their children’s levels of prevention concepts comprehension and self-protection skills of CSA. The results showed that the program increased mothers’ knowledge of CSA and decreaesd their beliefs on myths and stereotypes, and also increased their comprehension level of CSA prevention concepts and their level of children self-protection skills. These positive effects of the program show that the program can be incorporated into early childhood education practices. We are also pursuing the development of other research programs on this subject.

• Korean Journal of Human Ecology
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• v.22 no.1
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• pp.1-15
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• 2013

Using the National Children and Youth Panel Survey (2010) data, this study examines the self-care after school experienced by elementary school students. It argues the necessity of analysis on self-care days for understanding demanders' characteristics of after-school care policy. Based on the Ordered Logit Model, this study analyzes the determinants of self-care days among school-aged children. The main result of the analysis is that self-care days are also more likely to be increased among children with higher school grade, more sibling, lower mother's education, dual-earner family, two-parent family, multi-cultural family, and lower family income.

• Journal of Families and Better Life
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• v.27 no.2
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• pp.203-211
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• 2009

This study was conducted to evaluate a forecast model designed to describe a vocational high school for runaway students. The study included 2000 adolescents from the KEEP(Korean Education and Employment Panel). A Data mining decision tree model revealed that: (1) Suicide ideation was a risk factor for running away among smokers. (2) High self-evaluation was a risk factor for running away among individuals that smoked and had no suicide ideation. (3) Drinking was predicted as a risk factor for no smokers, while family life dissatisfaction was predicted as a risk factor among non-smokers that drank. (4) Negative relationship with mother was predicted as a risk factor among non-drinking non-smoking.

• Journal of the Korea Academia-Industrial cooperation Society
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• v.22 no.1
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• pp.454-460
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• 2021

This study focused on the sex culture and the sexual rights of women, examining the gender-role stereotype that is related to the protection of the sexual rights of female college students and identifying the influence of self- esteem. The research was conducted on gender-role stereotypes, sexual assertiveness, and self-esteem among female university students attending four-year universities in Seoul and Gyeonggi. Four hundred eighty-two copies were used for analysis. The Pearson's correlation coefficient was used to identify the correlation between the variables. Multiple regression analysis was conducted to identify the mediated effects of self-esteem in the effects of gender-role stereotypes on sexual assertiveness. The Sobel test was conducted to confirm that the effects were statistically significant. The results of this study were as follows. First, the gender-role stereotype had negative correlations with self-esteem and sexual assertiveness. Self-esteem had positive correlations with sexual assertiveness. Second, self-esteem was found to be a partial mediating factor when the gender-role stereotype had a statistically significant effect on sexual assertiveness. Therefore, a coping strategy under the influence of the gender-role stereotype is necessary for improving the sexual assertiveness skill of female students. This study also suggests the need for sex role-related education programs or counseling on self-esteem.

• Proceedings of the Korea Information Processing Society Conference
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• 2021.11a
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• pp.1353-1356
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• 2021

블록체인은 다수의 노드 네트워크 내에서 거래내역을 분산 저장함으로써 투명성을 확보하는 기술이다. 최근에는 금전적 가치를 지닌 선하증권(Bill of Lading, B/L 서류)에 블록체인을 적용하여 무결성을 확보하고 거래 과정을 간소화 하기위한 연구가 진행되고 있다. 본 논문에서는 거래자 중심의 블록체인 기반의 선하증권 시스템을 제안한다. 수출자는 발행 받은 선하증권을 AI(Artificial intelligence)기반의 OCR(Optical character recognition)기능을 통해 블록체인에 등록하고, 각국 은행에서 열람하여 신용장거래를 진행한다. 수입자는 선하증권 정보를 담은 QR(Quick Response code)코드로 자기증명을 하여 물품을 인도 받게 된다. 이는 수출자 측에서는 선적서류를 우편으로 보낼 시간과 비용을 단축하고, 서류의 무결성을 입증할 수 있다는 점에서 큰 효과를 얻을 수 있다. 수입자 측에서는 서류가 등록됨과 동시에 확인할 수 있고, 해당 거래를 신뢰할 수 있다는 이점을 갖는다. 마지막으로 은행 측에서는 선적서류에 대해 보안성을 갖출 수 있고 검증이 더 신속하게 이루어질 수 있다.

• Journal of the Korean Magnetics Society
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• v.9 no.4
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• pp.210-216
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• 1999

The objective of this paper is to investigate corrosion behaviors of CoCrTa/CrNi thin film and post heat-treatment effect. An electron beam evaporator was used for films deposition. After evaporation, post heat-treatment was carried out under $5.0{\times}10^3$ Torr vacuum condition. Annealing temperature and time were 400 $^{\circ}C$ and 30 min, respectively. To understand the effect of annealing on corrosion behavior of CoCrTa/CrNi, potentiodynamic polarization technique and accelerated corrosion chamber test were undertaken. Corrosion potential is higher for the annealed samples (CoCrTa 400$\AA$/CrNi 1000$\AA$) than for as-deposited one. This is attributed to an enrichment of Cr in the surface layer of the thinfilm resulting in a more corrosion resistant material.

• Korean Journal of Childcare and Education
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• v.8 no.2
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• pp.63-80
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• 2012

This study examined the relationship among temperament, social support and hope of institutionalized children. A total of 198 children, aged 10 to 13, recruited from 20 institutions in Seoul participated. Demographics, temperament, social support from friends, institution-family and school teacher, and hope were assessed by self-report. Results showed that in bivariate level, temperament and social support were significantly associated with level of hope. However, hierarchical multiple regressions indicated that children's hope was predicted only by age and social support from friends, institution-family and school teacher. That is, temperament was not contributed to predict hope, whilst social support contributed unique variance to the prediction of hope, controlling for age. The more social support the children felt they had, the higher levels of hope they reported. Further analyses revealed that support from friends, institution-family and school teacher were influential factors in explaining hope agency, while support from institution-family and school teacher were influential factors in explaining hope pathway of institutionalized children, controlling for age.

• Convergence Security Journal
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• v.20 no.2
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• pp.59-68
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• 2020

In January 2020, the National Assembly passed the revisions of three bills which ease regulations on the use of personal information. The revised laws include the launch of an independent supervisory body, the arrangement of redundant regulations, and regulations for the development of the data economy. This paper analyzes the content and meaning of each law of the Three Revised Bills that Ease Regulations on the Use of Personal Information. And the future challenges outline three aspects: the establishment of a system to ensure the right to informational self-determination of privacy concerns, the establishment of a certification system and the presentation of reasonable guidelines, and the expectation of professional performance by the Personal Information Protection Commission.

• Proceedings of the Korean Vacuum Society Conference
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• 2011.02a
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• pp.504-504
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• 2011

최근 디지털 프린팅 기술의 핵심기술로 떠오르고 있는 잉크젯 프린팅 기술은 최근 기존의 문서인쇄 뿐 아니라, 직물 인쇄, 태양전지 등의 다양한 반도체 소자 제조에 널리 활용되고 있으며, 점차 그 응용 분야를 넓혀가고 있다. 특히 thermal 방식의 잉크젯 피린팅 기술은 etching, thin film process, lithography등의 반도체 공정 기술을 이용하여 제작할 수 있기 때문에, 현재 잉크젯 프린팅 기술은 대부분 thermal 방식을 체택하고 있다. 이러한 thermal 잉크젯 프린팅 방법에서는 잉크를 토출시키기 위하여, 전기적 에너지를 열에너지로 전환하는 전자저항막층이 필수적으로 필요하게 되는데, 이러한 전자저항막층은 수백도가 넘는 고온 및 잉크와 접촉으로 인한 부식 및 산화 문제가 발생할 수 있는 열악한 환경에서 사용되므로, Ta, SiN과 같은 보호층을 필수적으로 필요로 한다. 그러나 최근 잉크젯 프린터의 고해상도 고속화, 대면적 인쇄성 등과 같은 다양한 요구 증가에 따라, 잉크젯 프린터의 저전력 구동이 이슈로 떠올라 열효율에 방해가 되는 보호층을 제거할 필요성이 제기되고 있다. 지금까지는 Poly-Si, $HfB_2$, TiN, TaAl, TaN _0.8 등의 물질들이 잉크젯 프린터용 전자저항막 물질로 연구되거나 실제로 사용되어져 왔으나, 이러한 물질들을 보호층을 제거하는 경우 쉽게 산화되거나, 부식되는 문제점을 가지고 있다. 따라서, 기존 전자저항막의 기능을 만족시키면서, 산화나 부식에 대한 강한 내성을 가져 보호층을 제거하더라도 안정적으로 구동이 가능한 하이브리드 기능성(히터 + 보호층)을 가지는 잉크젯 프린터용 전자저항막 물질의 개발이 시급한 실정이다. 본 연구에서는 자기조립특성을 가져 정밀제어가 가능한 원자층증착법(Atomic Layer Deposition)을 이용하여 원자/나노 단위의 미세 구조 컨트롤을 통해 내열 내산화 내부식성 저온도저항계수를 동시에 가지는 다기능성 전자저항막을 설계 및 개발하고자 하였다. 전자저항막 개발을 위하여 우수한 내부식 내산화성을 가지고 결정립 크기에 따른 온도저항계수 조절이 가능한 platinum group metal들과 전기 저항 및 내열성 향상을 위한 물질의 복합구조막을 원자증증착법으로 증착하였다. 또한, 전자저항막 증착시 미세구조와 공정 변수가 내부식성, 내산화성, 그리고 온도저항계수에 미치는 영향을 체계적으로 연구하여, proto-type의 inkjet printhead를 구현하였다.

• The Journal of Korean Institute of Communications and Information Sciences
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• v.41 no.1
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• pp.23-36
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• 2016

We propose a new type of OFDM-CDMA scheme which allows large inter-user timing offset using zero correlation zone(ZCZ) code in conjunction with block spreading technique. Moreover to maximize spectral efficiency, the proposed OFDMA does not have guard time(GT). This is opposite to the trends in the conventional schemes where GT are supposed to be larger to allow larger inter-user timing offset. It is remarkable that the proposed GT-free OFDM-CDMA scheme completely cancels inter-user interference in the multipath fading simply by despreading process. This inter-user interference-free feature still remains even there exist inter-user timing offsets as large as multiple OFDM symbols. Although the self-user interference exists due to no GT, it can be effectively suppressed by simple successive interference cancellation(SIC) from the first symbol in spread block as it is free from inter symbol interference(ISI).