영아의 기질과 누적 코티솔 수준의 관계

송지나(Ji-na Song),이순형(Soon-hyung Yi) 한국아동학회 2016 아동학회지 Vol.37 No.3

Objective: This study aimed to examine the difference in toddlers’ accumulated cortisol levels based on childcare experience in toddlerhood and the relationship between temperament and accumulated cortisol levels. Methods: Hair sample were collected for measure accumulated cortisol level in 87 toddlers. The Early Childhood Behavior Questionnaire (ECBQ) was used to measure temperament. Results: First, toddlers in childcare showed higher accumulated cortisol levels than in-home toddlers. Second, toddlers in childcare, exhibited a significant correlation between accumulated cortisol levels and surgency. Third, the accumulated cortisol levels of in-home toddlers exhibited a significant correlation with negative affect. In this research, there was significant range in the accumulated cortisol level according to childcare use, and the factors related to accumulated cortisol levels were different in each context. Conclusion: The results of this research support the “susceptibility to context of HPA axis” and imply a needed discussion about the effect of childcare experiences in toddlerhood.

한국 고흥군 무인도서 하계 해조상 및 해조류 군집구조

송지나 ( Ji Na Song ),박서경 ( Seo Kyoung Park ),허진석 ( Jin Suk Heo ),김보연 ( Bo Yeon Kim ),유현일 ( Hyun Il Yoo ),최한길 ( Han Gil Choi ) 한국수산과학회(구 한국수산학회) 2011 한국수산과학회지 Vol.44 No.5

The intertidal benthic macroalgal floras of 19 uninhabited islands were investigated in the Goheung area, South Sea, Korea, in June 2008. Seaweed community structures on the rocky shores of four (Naemaemuldo, Ceoldo, Araedombaeseom, and Jinjioedo) of the 19 islands were also examined. Eighty macroalgal species were identified, including 13 green, 19 brown, and 48 red algae. The maximum number of species was found at Naemaemuldo, with 35 species, and the minimum was at Aredombaeseom, with 21 species. Seaweed biomass ranged from 21.39-76.22 g dry wt/m2, with a maximum at Naemaemuldo, and minimum at Jinjioedo. Sargassum thunbergii was a representative species, distributed widely in the intertidal zone of the four islands. Subdominant seaweeds were Corallina pilulifera and Ulva pertusa at Naemaemuldo and Jinjioedo, respectively. Also, Ishige okamurae was dominant at Ceoldo and Araedombaeseom. Six functional seaweed forms were found at each study site, except for Araedombaeseom, which had four functional groups. On the rocky shores of the four sites, a coarsely-branched form was the most dominant functional group ranging from 44.44-61.90% in species number and 72.42-91. 09% in biomass. In conclusion, among the four study sites, the shore of Naemaemuldo Island had the best ecological status, with the highest number of species, and greatest biomass (mainly brown and red algae) and functional form diversity of seaweeds. Furthermore, on the rocky shore of Naemaemuldo, coarsely branched- and joint calcareous-form seaweeds, which grow in clean and undisturbed environmental conditions, were the representative functional forms.

제7차 중학교 과학과 지구과학 교육과정과 2007년 개정 교육과정의 내용 비교

송지나 ( Ji Na Song ),신순선 ( Soon Sun Shin ),조규성 ( Kyuu Seong Cho ) 전북대학교 과학교육연구소 2009 科學敎育論叢 Vol.34 No.-

미취학 아동의 칫솔질 교육에 따른 치아우식원인균 감소와 구강위생상태 변화

송지나 ( Ji-na Song ),조명숙 ( Myung-sook Cho ),이민경 ( Min-kyung Lee ),유수빈 ( Su-bin Yu ),김선일 ( Sun Il Kim ),김혜진 ( Hye-jin Kim ) 한국치위생학회(구 한국치위생교육학회) 2018 한국치위생학회지 Vol.18 No.5

Objectives: This study was conducted to reveal the biological basis of dental plaque and preschool children’s dental health status through repetitive and continuous toothbrushing instruction to preschool children, using quantitative criteria, and to emphasize the importance of the role of an oral health manager for the prevention of dental caries. Methods: After IRB approval, toothbrushing instruction and oral microbial specimen collection were conducted with children of preschool age at the Daycare Center attached to D. University, Busan. Specimens from 27 children were characterized by analysis with real-time multi-chain enzymatic polymerization reaction technique at an agency specializing in genetic analysis. Results: In a survey of the children’s dental health behaviors, 48.1% responded that the toothbrushing time is 91 to 150 seconds; 66.7% responded that the frequency of toothbrushing is more than three times per day; 81.5% stated that they performed tongue brushing; and 81.5% brushed their teeth. Regarding levels of dental cariogenic bacteria, after children received continuous toothbrushing instruction, there were reductions in both Streptococcus mutans and Streptococcus sobrinus. Regarding toothbrushing time, the time increased in relation to the presence of instruction. Regarding Quigley Hein Index, the index decreased in the early and middle periods upon addition of instruction, then increased in the middle and later periods. Conclusions: Through persistent and repetitive toothbrushing instruction, healthy behavior can be positively established in children of preschool age; it is necessary to prepare institutional measures so opportunities for dental health education can be consistently provided and maintained. In the future, it will be necessary to conduct a follow-up study to verify the factors affecting toothbrushing time and volume of oral pathogens.

십대출산기혼모의 부모됨에 관한 질적 연구: 지지적 관계를 통한 적응과 성숙을 중심으로

송지나 ( Song Ji-na ),강혜현 ( Kang Hye-hyun ),조윤희 ( Cho Yoon-hee ),이순형 ( Lee Soon-hyung ) 초록우산 어린이재단(구 한국복지재단) 2014 어린이재단 연구논문 모음집 Vol.2014 No.-

이 연구는 십대출산기혼모의 부모됨 경험과 그 과정에서 나타난 다양한 지지적 관계의 역할, 십대출산기혼모의 적응과 성숙의 가능성에 대해 밝히고자 하는 목적에서 수행되었다. 온라인 커뮤니티를 통해 전국에서 십대에 임신과 출산을 경험하였으며 아이의 친부와 혼인한 여성 17명을 모집하여 일대일 면담을 통해 자료를 수집하였다. 수집된 자료는 Strauss(1987)의 `개방적 코딩`, `중추적 코딩`, `선택적 코딩` 방법을 사용하여 분석하였으며, `참여자 검토` 과정을 통해 연구결과의 신뢰도를 확보하고자 노력하였다. 이 연구에서는 십대 양육모의 적응에 영향을 미치는 사회적 지지로서 원가족과 배우자, 자조모임에 초점을 두고 자료를 분석하였다. 자료 분석 결과, 십대 청소년의 임신이 출산과 양육, 혼인으로 이어지도록 하는 데 결정적인 영향을 끼친 것은 아이의 친부의 임신에 반응과 대처였으며, 아이의 친부가 부모됨의 과정에서 가장 큰 지지원으로 나타났다. 또한 원가족이 적극적으로 지지를 제공할수록 청소년 부모의 적응과 성숙에 큰 도움이 되는 것으로 나타났다. 온라인 커뮤니티를 통한 자조모임도 십대출산기혼모의 지지원인 것으로 나타났다. 연구 참여자들은 이와 같은 지지적 관계를 통해 자신의 삶과 새로운 가족에 적응하였으며, 자신의 삶에 만족하고 미래를 낙관적으로 평가하고 있음을 것을 알 수 있었다. 이 연구는 십대 청소년의 부모됨이 원가족, 배우자와의 지지적 관계를 확립한다면 적응적 이고 성숙된 삶으로 이어질 수 있음을 발견하였다는 점에서 의의가 있다. 또한 온라인을 통한 또래 양육모 자조모임이 십대 양육모에게 중요한 지지원임을 발견한 것도 의의가 있다. 이를 통해 십대 양육모에 대한 시각을 전환할 필요성이 드러났으며, 적응을 돕기 위해서는 다양한 지지 체계를 통합적으로 포함하는 복지 프로그램이 제공되어야 함을 알 수 있었다. The purpose of this research was to discover the experiences as a teenage mother, the role of diverse support, and the possibility of adaptation and maturity. The participants were 17 married mothers who gave birth to a baby at teenage and they were recruited through online communities. One-to-one in depth interview was performed in nine cities, South Korea. We analyzed interview data by focusing on social support from which a married teenage mother could obtain; family of origin, a spouse, self-help group. Result showed that spouse`s response and reaction had a decisive effect on leading a teenage mother`s pregnancy to childbirth, parenting and marriage. The spouse`s support was the greatest source for participants in experience of being a parent. The support from family of origin was also an important factor. The more they receive support, the better participants adjust to their lives. In addition, self-help group through online communities was another important supporting factor for them. From those support, participants finally became well-adapted to their new lives and new families, and were satisfied with their lives with a positive outlook toward their future. The result revealed that being a teenage mother can lead to adaptive and mature life if they establish a healthy relationship with their family of origin and spouse. More importantly, the online self-help plays a great role in adaptation for a teenage mother. This research emphasizes the necessity of changing views toward teenage parenthood and an integrated social program in diverse support systems.

실내배양에서 납작돌잎(Lithopyllum yessoense)과 진분홍딱지(Hildenbrandia rubra)의 배아 생장에 미치는 환경요인의 영향

송지나 ( Ji Na Song ),박서경 ( Seo Kyoung Park ),오지철 ( Ji Chul Oh ),유현일 ( Hyun Ill Yoo ),최한길 ( Han Gil Choi ),김영식 ( Young Sik Kim ),남기완 ( Ki Wan Nam ) 한국수산과학회 2013 한국수산과학회지 Vol.46 No.6

The effects of environmental factors, such as irradiance, daylength, salinity, and desiccation, on the growth of Lithophyllum yessoense and Hildenbrandia rubra sporelings were examined. Sporelings of each species were cultured with 10, 50, 80, 120, 150μmol photon m-2 s-1 for 14 days and their maximum growth occurred under 80 μmol photon m-2 s-1. Germlings of both species survived for 21 days in darkness, and even the L.yessoense germlings grew. In the salinity experiment, sporelings of each species survived for 7 days and died after 14 days under 20 and 25 psu, but the sporelings grew well under 34 psu. Physiological features of each species with respect to the evaluated daylengths (8, 12, 14 and 16 h) were slightly different, and maximal growth occurred at 16 h for L. yessoense and at 14 h for H. rubra sporelings. Mortality of the sporelings increased with the exposure period, but H. rubra was less tolerant to desiccation than L. yessoense. In conclusion, sporelings of the two species showed similar growth responses to various environmental factors with slightly different physiological features with respect to salinity, daylength, and desiccation. However, more ecological and physiological studies on slow-growing crustose algae are required to elucidate the expansion of barren ground around the coastal areas of Korea.

구성타당도 평가를 위한 시각화방법

노호석,송지나,조혜윤,Noh, Hohsuk,Song, Ji Na,Cho, Hyeyoon 한국통계학회 2016 응용통계연구 Vol.29 No.2

It is common to quantify the concept of interest in the social and human sciences to test a research hypothesis. In such a case, it is strongly recommended to investigate if the procedure is appropriately designed and implemented according the research purpose since the quantification procedure highly affects the result of statistical analysis. In this work, we propose a visualization tool which enables us to check the construct validity of a measurement tool (such a questionnaire) in a concise and convenient way based on a penalized factor analysis model. We illustrate our method with numerical simulation and real data analysis. 인문사회학 분야에서와 같이 개념적인 주제에 대한 연구가설을 검정하기 위해서는 연구 대상이 되는 개념을 수량화하여 통계적 분석을 실시하여야 한다. 이러한 경우 연구결과에 대한 해석이 설문조사에 의한 수량화과정에 깊이 의존하기 때문에 연구자가 측정도구인 설문지가 연구목적에 부합하게 제대로 만들어졌는지 검정하는 것은 필수적인 과정이라고 할 수 있다. 본 논문에서는 흔히 사용되는 요인분석에 의한 측정도구 타당도 평가를 개선할 수 있는 시각화 방법을 제시하고 모의실험과 실제사례분석을 통해 그 유용성을 예시하였다.

보육비 지원대상 확대에 따른 소득계층별 유아 보육비 및 사교육비 변화

정수지(Su Ji Jung),박윤현(Yun Hyun Pack),송지나(Ji Na Song),김대웅(Dae Woong Kim),이순형(Soon Hyung Yi) 한국아동학회 2016 아동학회지 Vol.37 No.2

Objective: The purpose of this study was to examine the changes of childcare expenses and private education expenses caused by target expanding the childcare subsidy policy and its relationship to household income. Methods: The study analyzed data of the Korean Welfare Panel Study from 2009, before the universal childcare policy was enforced, to 2013, when the universal childcare policy was enforced. Results and Conclusion: The results of analysis were as follows. First, while childcare expenses, private education expenses, and their ratios to household income showed a tendency of gradual decline, the graphs of childcare and private education expenses were symmetric. Second, there were differences in childcare and private education expenses among income classes. Third, in 2009, before the universal childcare policy was enforced, household income affected childcare and private expenses. Lastly, in 2013, after the universal childcare policy was implemented, household income had a greater effect on private education expenses, while the effect of household income on childcare expenses became insignificant.

PEALD를 이용한 HfO₂ 유전박막의 Al 도핑 효과 연구

오민정 ( Min Jung Oh ),송지나 ( Ji Na Song ),강슬기 ( Seul Gi Kang ),김보중 ( Bo Joong Kim ),윤창번 ( Chang-bun Yoon ) 한국전기전자재료학회 2023 전기전자재료학회논문지 Vol.36 No.2

Recently, as the process of the MOS device becomes more detailed, and the degree of integration thereof increases, many problems such as leakage current due to an increase in electron tunneling due to the thickness of SiO₂ used as a gate oxide have occurred. In order to overcome the limitation of SiO₂, many studies have been conducted on HfO₂ that has a thermodynamic stability with silicon during processing, has a higher dielectric constant than SiO₂, and has an appropriate band gap. In this study, HfO₂, which is attracting attention in various fields, was doped with Al and the change in properties according to its concentration was studied. Al-doped HfO₂ thin film was deposited using Plasma Enhanced Atomic Layer Deposition (PEALD), and the structural and electrical characteristics of the fabricated MIM device were evaluated. The results of this study are expected to make an essential cornerstone in the future field of next-generation semiconductor device materials.

쇠미역사촌과 미역 포자체의 배양 및 야외 개체군의 생장 비교

박서경 ( Seo Kyoung Park ),허진석 ( Jin Suk Heo ),김보연 ( Bo Yeon Kim ),송지나 ( Ji Na Song ),임거영 ( Geo Yeong Lim ),김하니 ( Ha Ni Kim ),최한길 ( Han Gil Choi ) 한국수산과학회(구 한국수산학회) 2011 한국수산과학회지 Vol.44 No.1

The effects of temperature, light, and salinity on the growth of Costaria costata and Undaria pinnatifida juveniles were examined in laboratory cultures. In a cultivation farm, the monthly yield and density were also investigated between December and April for C. costata and between December and March in 2007 and 2008 for U. pinnatifida. The relative growth rates (RGRs) were greater at 20~60 μmol photons m-2s-1 than at low (0~10 μmol photons m-2s-1) and high (100~180 μmol photons m-2s-l) irradiance levels. The optimal growth conditions for the two species were 17℃, 35 psu, 60 μmol photons m-2s-1, and a daylength of 12 h, indicating that C. costata and U. pinnatifida have very similar growth responses to temperature, light, and salinity. However, the growth responses of the two species to various environmental factors were different; C. costata grew faster than U. pinnatifida but the latter species grew well at low salinity. The monthly yield of C. costata and U. pinnatifida increased steadily over the study period, and it was maximal in March for both species, but the yield of U. pinnatifida was greater than that of C. costata.