Effects of various types of bridge exercise on pain, back pain disability index and abdominal muscle thickness in patients with chronic low back pain

김다인,정지운,김대훈,허진강 대한치료과학회 2017 대한치료과학회지 Vol.9 No.2

Objective: The purpose of this study was to investigate the effects of stabilization training on bridge exercise type on pain, back pain disability index and abdominal muscle thickness in patients with chronic low back pain Method: 20 patients with chronic low back pain were divided into three groups: a bridging exercise of resistance with upper limb movement, a bridging exercise on unstable surface, and a bridging exercise of general. The exercises were conducted for 30 minutes, 3 times a week (total; 24 times for 8 weeks). Pain, back pain disability index, thickness of abdominal muscles (transvers abdominis, external oblique, internal oblique) were measured before the training and at 4 weeks and 8 weeks after the intervention. Comparison of the time dependent variable for each group was calculated by Repeated measures ANOVA. Comparison among the three groups was calculated by an One-way ANOVA. Results: All three groups had significant differences in pain, back pain disability index, and abdominal muscle thickness (p<.05). There was no significant difference between the three groups in the inter-group analysis. Conclusion: The results of this study showed that bridging exercise of resistance with upper limb movement, bridging exercise on unstable surface, and a bridging exercise of general are an effective therapy for pain, back pain disability index, thickness of abdominal muscles in patients with chronic low back pain. These results suggest that a bridging exercise of general can be effective for patients with low back pain without resistance or external factors which may be difficult to perform.

세계인이 입는 한복

김다인 샘터사 1996 월간 샘터 Vol.27 No.2

시진핑 시기 중국의 대외정책에 관한 연구 - <인민일보>기사 텍스트마이닝 분석을 중심으로 -

김다인,리단 부경대학교 인문사회과학연구소 2023 인문사회과학연구 Vol.24 No.4

중국은 1978년 개혁개방부터 21세기 현재 꾸준한 성장을 이루어 왔다. 중국 공산당 18차 대표대회와 제 12차 전국인민대표대회를 시작으로 시진핑(習近平 )시대가 개막되었다. 시진핑 정부는 ‘중국의 위대한 부흥’, ‘전면적 소강사회 건설’, ‘평화발전’ 등의 기조를 유지해 나가며 국제적 책임과 권리, 역할을 중요시 하는 시진핑 정부 자신만의 ‘중국의 꿈(中國夢)’ 을 선언하였다. 시진핑 정부의 중국 외교는 덩샤오핑(鄧小平), 장쩌민(江澤民)의 시대와는 다르게 주도적이고 대담한 대외정책을 추구하는 모습을 보이며 기존의 도광양회(韜光養晦)의 기조에서 화평발전(和平发展)이라는 적극적 성향을 띄는 기조로 개념을 전환하였다. 시진핑 정부는 중국 공산당 19차 대표대회를 통해 ‘신시대 중국 특색 사회주의’ 및 ‘중국 특색의 대국 외교’를 제시하였으며 ‘신형대국관계’의 상위 개념인 ‘신형국제관계(新型國際關係)’와 ‘인류운명공동체(人类命运共同體)’를 강조하였다. 또한 시진핑 정부는 글로벌 거버넌스 구축을 통한 자국의 주권과 안전, 평화발전을 위한 국제환경 조성을 중요시 하고 있다. 이러한 중국의 외교적 행보는 세계 질서의 변화를 요구하는 셈이며 이는 강대국들의 동북아 지역 세력 다툼의 전초지인 한반도에 그대로 투사될 것으로 예측된다. 한・미 동맹과 한・중 전략적 협력 동반자 관계 간의 균형적인 발전은 한・중 수교 이후 한국의 대외전략에서 가장 중요한 과제라고 해도 과언이 아니다. 국제사회 관계 속 시진핑 정부의 외교정책에 대한 객관적 평가가 필요하다. 그 어느 때보다도 한국의 외교적 지혜를 요구한다. 중국 공산당과 정부의 입장을 표명하고 당의 정책에 입각해 보도하는 <인민일보>를 본 논문의 분석대상으로 삼아 텍스트마이닝 토픽모델링(LDA기반) 분석을 실시하였으며 분석 결과에 따른 한국의 대외정책에 주는 시사점을 제공하였다. The Xi Jinping government has maintained its stance of ‘Great Revival of China,’ ‘ Building a Full Well-Off Society,’ and ‘Peace Development.’ Xi Jinping declared the ‘China Dream’ of the Xi Jinping government, which values international responsibility, rights and roles in accordance with its national power. China's strategy calls for a change in the world order, requiring an objective evaluation of the Xi Jinping administration's foreign policy in international community relations. Thus, the researcher selected the People's Daily as the best way to understand the foreign policy of the Xi Jinping government. Through the ‘People's Network’, an Internet site of the <People's Daily>, a total of 872 articles were collected, focusing on the Xi Jinping government's foreign policy keywords (‘Xi Jinping’, ‘Foreign policy’, ‘Community of Shared Destiny for mankind’, ‘Diplomacy with neighboring nations’, ‘Great Power Diplomacy’, ‘New Type of International Relations’, ‘China Dream’, ‘Win-win Cooperation’, ‘Korean Peninsula’, ‘THAAD’, ‘North Korea’) Text Mining, Topic Modeling (LDA-based) analysis techniques focusing on text during mining analysis were used. This study analyzed five topics with high ranking among 12 topics through indicators such as topic modeling analysis, topic document classification, and topic-related networks, and the results are as follows. It was organized into Topic 5 (China's strategy on the Korean Peninsula – communication and negotiation), Topic 10 (China-U.S. relations during the Xi Jinping period), Topic 2 (North Korea-China friendly relations during the Kim Jung-un period), Topic 8 (Constructing an Asian Community of Shares Destiny), and Topic 7 (China's Distinctive Great Power Diplomacy). The above results are intertwined with keywords related to the Korean Peninsula and the two Koreas and consist of major topics related to China's foreign policy during the Xi Jinping period related to the projects ‘China Dream’ and ‘The Great Revival of the Chinese People.’ With the results and analysis obtained from the research of this paper, this paper aims to provide implications for Korea's foreign policy.

Target-Responsive Template Structure Switching-Mediated Exponential Rolling Circle Amplification for the Direct and Sensitive Detection of MicroRNA

김다인,이지영,박상우,박주현,서명지,이원종,김은정 한국바이오칩학회 2022 BioChip Journal Vol.16 No.4

This study reports a fast and straightforward detection of cancer-specific microRNA (miRNA) via isothermal toehold-mediated rolling circle amplification (TRCA) with a dumbbell (DB) template and DNA-tethered gold nanoparticles (GNP-DNA). A preassembled DB template with a specific structure switching to target miRNA and fine-tuning of the surface coverage of GNP-DNA allows the development of a universal and direct miRNA detection platform without the need for washing, labeling, or isolation. This study demonstrates the successful development of the TRCA and visualization method of amplified products with the naked eye that can precisely and rapidly detect the presence of miRNA-21 with a detection limit of 0.87 nM within 1 h using a standard laboratory plate reader. This approach is further extended to initiate subsequent rounds of exponential amplification with the addition of primers (termed hyperbranched TRCA or HTRCA), providing a 1.6-fold improvement in assay sensitivity with a detection limit of 0.55 nM. Fluorescent detection signals are also used to quantify the amplified products, providing a detection limit of 33 pM (for TRCA) and 31 pM (for HTRCA). Thus, this colorimetric and fluorescent assay can be used as an effective molecular diagnostic tool for target biomolecules with a combination of additional signal amplification strategies.

Human exposure analysis study according to Phthalate regulation

김다인,박승영,용도경,김종수,오금순,신영민 환경독성보건학회 2023 한국독성학회 심포지움 및 학술발표회 Vol.2023 No.11

An Analysis of the Relationship between Grit and the Psychological Well-Being of Psychiatry Residents

김다인,장승호,박성용 대한우울조울병학회 2020 우울조울병 Vol.18 No.3

Background: Grit is a psychological factor that is defined as “perseverance and passion for the long term.” A growing interest exists in this factor because it aids in overcoming difficult tasks related to the psychological well-being of psychiatry residents to prevent burnout; however, it is still under-recognized in the Korean clinical practices. This study therefore examined the relationship between grit and the psychological well-being of psychiatry residents. Methods: In all, 77 psychiatry residents completed the study survey, and all met our study’s participation criteria. To assess these residents’ grit, burnout, and psychological well-being, the Original Grit Scale, Maslach Burnout Inventory, and Psychological Well-being Scale were employed. For the statistical comparison, t-test, ANOVA, and Pearson correlation analysis were used. Results: A significant relationship prevailed between grit and psychological well-being. The grit scores had positive and negative correlations with psychological well-being (p<0.01) and burnout (p<0.01), respectively. Thus, psychiatry residents with higher grit scores were more likely to experience less burnout and have higher psychological well-being scores. Conclusion: A significant relationship existed between grit, psychological well-being, and burnout. Grit assessment thus aided in identifying psychiatry residents who were at a greater risk of quitting their training program due to poor psychological well-being or emotional exhaustion.

국내·외 수소충전소 및 배관망 핵심 부품 기술 동향에 관한 연구

김다인,김소현,이효렬 한국에너지학회 2022 한국에너지공학회 학술발표회 Vol.2022 No.4

기계학습을 활용한 지하 공동구 내부 환경 예측

김다인,이인복,정우석,이병진 한국건축친환경설비학회 2023 한국건축친환경설비학회 논문집 Vol.17 No.4

Underground utility tunnel is located underground, which makes the ventilation system operation and internal environment monitoring important. By designing a machine learning regression model for predicting the internal environment, the effects of the input variables were verified. Temperature, relative humidity and fan operation hour data was collected hourly by sensors installed near the exhaust fan. The external weather data was obtained from the nearest meteorological station in the same experimental period. The results of machine learning regression analysis model showed accuracy of random forest (R2 : 0.891), support vector regression (0.800), k-nearest neighbor (0.774), and multi linear regression (0.744). In order to design the accurate model, the n estimator was set to 157, in which the accuracy of temperature prediction was 0.837 by R2 , and the accuracy of humidity prediction was 0.950. Using the RF model, the correlating factors correlating were verified and the internal environment of underground utility pipe according to fan operation time was verified.

직업계 고등학교 학생들의 진로장벽 인식 수준에 따른 진로탄력성과 진로준비행동 차이

김다인,안도희 인하대학교 교육연구소 2019 교육문화연구 Vol.25 No.4

This study explored the cluster types that exist within the sub-factors of career barrier levels as perceived by vocational high school students. Specifically, the study sought to determine if differences exist in career resilience and career preparation behavior based on the career barriers clustering groups. The subjects of this study were 694 students in specialized high schools and meister high schools. Hierarchical cluster analysis showed that students were classified into four groups(“career reality awareness group”, “high career barriers group”, “vulnerable internal career factor group”, “low career barriers group”) based on the scores of sub-factors of perceived career barrier levels. Among students in specialized high school, the highest percentage was the “high career barriers group”. In the case of meister high school students, however, the cluster with the lowest percentage was the “high career barriers group”. Differences existed based on the career barriers clustering groups. In the case of career resilience, the “low career barriers group” demonstrated a higher degree of self-reliance, achieving aspirations, career independence, and active coping than “career reality awareness group”, “vulnerable internal career factor group”, and “high career barriers group”. In the case of career preparation behavior, “career reality awareness group” demonstrated higher all sub-factors of career preparation behavior than “vulnerable internal career factor group”, and “high career barriers group”. These results are expected to assist further exploration on how to improve career resilience and career preparation behavior on the part of vocational high school students for their successful employment and ability to achieve career goals. 본 연구에서는 특성화 고등학교와 마이스터 고등학교에 재학 중인 694명의 학생들을 대상으로 진로장벽의 하위요인인식 수준에 따른 군집유형을 탐색하고 진로장벽 군집유형에 따라 진로탄력성과 진로준비행동에 차이를 보이는지확인하였다. 진로장벽의 하위요인 인식 수준에 따른 군집유형을 탐색한 결과, ‘진로 현실여건 인식집단’, ‘진로장벽고집단’, ‘진로 내적요인 취약집단’, ‘진로장벽 저집단’으로 총 4개의 군집으로 구분되었다. 특성화 고등학교 학생들의경우, ‘진로장벽 고집단’에 속한 비중이 가장 컸던 반면, 마이스터 고등학교 학생들의 경우, ‘진로장벽 저집단’에속한 비중이 가장 큰 것으로 나타났다. 다음으로 진로장벽 군집유형에 따른 진로탄력성의 하위요인 별 차이를 살펴본결과, ‘진로장벽 저집단’, ‘진로 현실여건 인식집단’, ‘진로 내적요인 취약집단’, ‘진로장벽 고집단’ 순으로 ‘자기신뢰’, ‘성취열망’, ‘진로자립’ 및 ‘변화대처’ 요인의 수준이 높은 것으로 나타났다. 진로준비행동의 경우, ‘진로 현실여건인식집단’이 ‘진로 내적요인 취약집단’과 ‘진로장벽 고집단’에 비해 모든 요인의 수준이 높은 것으로 나타났다. 본연구는 직업계 고등학교 학생들의 성공적인 취업과 진로목표 달성을 위한 진로탄력성과 진로준비행동 증진 방안을탐색하는데 도움을 줄 수 있을 것으로 기대된다.

의치상 이장재의 젖음성 비교

김다인,정지혜,공현준,김유리 대한치과의사협회 2022 대한치과의사협회지 Vol.60 No.9

Purpose : The purpose of this study was to compare the wettability of 4 type of denture relining materials by measuring contact angle with saliva substitute. Materials and methods : Heat-cured reline resin(Vertex RS), Self-cured reline resin(Probase Cold, Tokuyama Rebase Ⅱ), soft liner(COE Soft) were fabricated as specimens. Before and after storage in saliva substitute for 24 hour, contact angle between specimens and CMC based saliva substitute(Xerova soln) were measured. Contact angle according to denture relining materials were analyzed by one-way ANOVA and Tukey test(α=0.05). Contact angle before and after storage in saliva substitute were analyzed by independent t test(α=0.05). Results : Before storage, Rebase Ⅱ showed significantly lower cont859623act angle compared to Vertex RS, Probase Cold, COE Soft(P<0.05) and COE Soft showed significantly higher contact angle compared to Vertex RS, Probase Cold, Rebase Ⅱ(P<0.05). After storage, Rebase Ⅱ showed significantly lower contact angle compared to Vertex RS, COE Soft(P<0.05) and COE Soft showed significantly higher contact angle compared to Vertex RS, Probase Cold, Rebase Ⅱ(P<0.05). Before and after storage, Rebase Ⅱ and COE Soft showed significant difference(P<0.05). Conclusion : Before and after storage in saliva substitute for 24 hour, the contact angle was highest in the order of Rebase II, Probase Cold, Vertex RS, and COE Soft. After storage in saliva substitute for 24 hour, the contact angle of Rebase II and COE Soft changed, but Vertex RS and Probase Cold did not change.