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기대일치모델을 이용한 스마트폰 만족과 통합충성도에 관한 연구
정지희(Ji-Hee Jung),신재익(Jae-Ik Shin),정기한(Ki-Han Chung) 한국인터넷전자상거래학회 2017 인터넷전자상거래연구 Vol.17 No.4
Recently, the domestic smartphone market entered the maturity stage after its growth phase. Combined with smart phone functions, mobile application creates a synergy with its various functions and by extending contents infinitely. The users can continuously add new applications on their smartphones. These various applications offer unique features that were not available in traditional mobile phones, and have the added value of being useful in terms of helping users conduct practical daily matters as well as being entertaining, enjoyable and fun. The samples consist of 226 survey data drawn from a smartphone users. The collected data were analyzed by SPSS 21.0 and AMOS 21.0. According to results of the reliability and validity test, all were found reliable, and all items were included. This study examines the use of smartphone, which is recently becoming a hot item in daily life, and user satisfaction level that compares expectations before use with product performance evaluations after use.
정태환 ( Tae-hwan Jung ),황효정 ( Hyo-jeong Hwang ),윤숭섭 ( Sung-seob Yun ),이원재 ( Won-jae Lee ),김진욱 ( Jin-wook Kim ),신경옥 ( Kyung-ok Shin ),한경식 ( Kyoung-sik Han ) 한국유가공기술과학회 2016 Journal of Dairy Science and Biotechnology (JMSB) Vol.34 No.3
In many countries, goat milk is an excellent nutrient source and is less allergenic for children and the elderly. The casein composition of goat milk consists largely of β-casein and lower amounts of α<sub>s1</sub>-casein, which may interfere with digestion by forming solid curds in the human stomach. Goat milk contains small fat globules and large amounts of medium chain fatty acids for, better digestibility, as well as abundant minerals and vitamins with high absorption rates. Recently, the medical benefits of goat milk in different human disorders have been recognized, leading to an increased interest in developing functional foods with goat milk, particularly for individuals with malabsorption syndrome. However, the physiological and biochemical properties of goat milk are largely unknown. We review the importance of goat milk as a potential functional food by providing scientific evidence confirming its health benefits.
정재연 ( Jae Yeon Jung ),김수화 ( Soo Hwa Kim ),김영경 ( Young Kyung Kim ),안세연 ( Se Youn Ahn ),유은미 ( Eun Mi Yoo ),최부근 ( Boo Keun Choi ),황윤숙 ( Yoon Sook Hwang ),한수진 ( Su Jin Han ) 한국치위생학회 2016 한국치위생학회지 Vol.16 No.3
Objectives: The purpose of the study is to investigate the awareness toward use and service contents of long term care for the elderly. Methods: A self-reported questionnaire was completed by 296 adults from August 13 to October 20, 2014. The questionnaire consisted of general characteristics of the subjects, awareness toward long term care insurance for the elderly, awareness toward long term oral health care services, use of long term care service and use intention for the long term care insurance. Data were analyzed by SPSS 18.0 program. Results: Those who were aware of the long term care insurance accounted for 55.4 percent. Approximately 50 percent of the respondents recognized long term care service items, home visit care, home visit bathing, and home visit nursing. Most of the respondents had information of long term care services by way of mass media and direct contact. Only 13.4 percent of the respondents were aware of the oral health service in the long term care insurance. The subjects were aware of denture cleaning, oral cleaning and oral health education out of oral health service in order; and oral health services that needed to be offered were denture cleaning, oral health education and professional toothbrushing. They reported that dental hygienists were the most important manpower that offered the efficient oral health care services. They answered that professional manpower and financial support are required for oral health services. The positive thinking to long term care insurance accounted for 89.2 percent and 91.3 percent had use intention for oral health services. Conclusions: Many elderly people have mastication or dysphagic problems due to systemic diseases. Therefore, it is necessary to announce the long term care insurance and long term care services for the elderly people.
에너지저장장치의 안전성 강화를 위한 리튬이온전지의 운용온도 상관관계 특성에 대한 연구
정재범(Jae-Beom Jung),임민규(Min-Gyu Lim),김진용(Jin-Yong Kim),한아(Ah Han),노대석(Dae-Seok Rho) 대한전기학회 2021 대한전기학회 학술대회 논문집 Vol.2021 No.7
최근 국내외에서 전기자동차(electric vehicle, EV)와 에너지저장장치(energy storage system, ESS)에 사용되는 중대형 이차전지의 수요가 급격하게 늘어나고 있는 가운데, 관련화재가 지속적으로 발생하고 있어 시장에 악영향을 미치고 있다. 특히 국내에서 발생한 ESS 화재는 2021년 5월 현재까지 총 31건 발생으로 보고되고 있어, ESS용 리튬이온전지에 대한 환경 및 안전성 검증 연구의 필요성이 대두되고 있다. 따라서, 본논문에서는 국내 중대형 이차전지에 사용되는 리튬이온전지 중 가장 널리 쓰이는 NMC계열 각형 및 파우치형 셀을 적용한 배터리 모듈을 대상으로 시험을 수행한다. 환경온도에 따른 충·방전 반복에 의한 열화도를 아레니우스 식에 따라 합리적으로 예측하고, 실제 충·방전 사이클 시험을 수행하여 온도에 따른 열화특성을 확인하였다.
태아발육지연 임신에서 산소농도가 영양배엽세포의 telomerase 활성도에 미치는 영향
정영내(Young Nae Jung),김세광(Sei Kwang Kim),정현철(Hyun Cheol Chung),박규현(Kyu Hyun Park),김창한(Chang Han Kim),장영건(Young Kwon Chang),권자영(Ja Young Kwon),김성훈(Sung Hun Kim),노성일(Sung Il Roh),조동제(Dong Jae Cho) 대한산부인과학회 2001 Obstetrics & Gynecology Science Vol.44 No.8
N/A Objective : To observe the difference in telomerase activity (TA) expression in the placenta between fetal growth restriction (FGR) with preeclampsia and those without and to evaluate the effect of oxygen concentration on the TA expression in the trophoblastic cells. Methods : Telomerase activity was measured in 48 (normal pregnancies, 16; preeclampsia with FGR, 15; normotensive FGR, 17) placentas which were obtained between 32 and 41 weeks' gestations. Trophoblastic cells were extracted from 8 chorionic villi samples obtained from 8-10 weeks' placenta and were cultured in either 2%, 8%, and 20% oxygen atmosphere. Then TA was examined by using telomeric repeat amplification protocol (TRAP) assay. Results : During 3rd trimester of pregnancy, exhibited TA expression in normal pregnancy, FGR complicated by preeclampsia, and normotensive FGR groups were 11 of 16 (68.8%), 4 of 15 (26.7%), and 4 of 17 (23.5%), respectively. Significantly lower level of TA was detected in the FGR group compared to the normal pregnancies (p=0.009), whereas within FGR pregnancies, presence of preeclampsia did not seem to have statistically significant effect on TA expression. TA expression levels were measured by optical density in trophoblasts cultured under various oxygen concentration which revealed that significantly higher TA was exhibited in the cells cultured in 2% oxygen compared to 8% and 20% (p<0.001). However no significant difference was noted in TA between cells cultured in 8% and 20% oxygen. Conclusion : Decreased TA in the placenta from pregnancies with FGR was noted regardless of presence of preeclampsia indicating a probable correlation between FGR and placental senescence. Since increased TA was noted in trophoblastic cells that were cultured in hypoxic condition, we could speculate that the intervillous oxygen tension during early-stage placental development plays a certain role in the placental degeneration in pregnancies complicated by FGR and preeclampsia.
정진주(Jung, Jin-Ju),이지영(Lee, Ji-Young),임재한(Lim, Jae-Han) 한국교육시설학회 2008 敎育施設 Vol.15 No.1
Under recent educational and social backgrounds, alternative education schools are increasing continuously, to compare Japanese example that experience of similar circumstance given before with the investigation of general present condition, specialized education contents, facilities and utilization of 5 schools of Tokyo area, I could know following contents ; First, free schools of Tokyo area were operated by individual education type that consider each student's special quality maximum comparing with Korea's alternative schools which seek community education type. Second, there were not many schools which prescribe school personal allowance per division or class comparing with our cases that operate divides step by equal class with general school and prescribes personal allowance by class, and whole students are generally about . Third, comparing with our cases that are located in mountain and rural area according to profitable locational conditions for environment and experience studying, it was general which islocatedin downtown for the purpose of free attending school of non attending school students. Fourth, usually, comparing with our that unused schools in mountain and rural area are general for alternative school and there were a lot of cases that uses small building of downtown such as lease office, unused warehouse and factory for free school of Tokyo area.
40세 이상 여성의 치주염과 건강행동의 관련성 - 심혈관질환 여부에 따른 비교
정재연 ( Jae-yeon Jung ),한수진 ( Su-jin Han ) 한국치위생학회 2021 한국치위생학회지 Vol.21 No.6
Objectives: The purpose of this study was to examine the association between periodontitis and health behavior in women aged ≥40 years. In addition, related factors were compared according to the presence or absence of cardiovascular disease. Methods: Data from the 7th Korean National Health and Nutrition Examination Survey (2016-2018) were used. The study included 3,801 women aged 40-79 years, who participated in a questionnaire health survey related to hypertension, stroke, myocardial infarction, and angina pectoris, as well as completed blood tests, anthropometry, and oral examination. Statistical analyses were performed using complex sample general linear, complex sample crosstabs, and complex sample logistic regression analyses. Results: In all subjects, smoking and drinking, use of interdental care products, and dental checkups were confirmed to be significantly related to periodontitis. In the group with cardiovascular disease, the use of interdental care products, experience in dental checkups, and toothbrushing more than three times a day were confirmed as significant factors for lowering the prevalence of periodontitis. In the group without cardiovascular disease, smoking and drinking, use of interdental care products, and experience in dental checkups were confirmed as the significant factors. Conclusions: To improve the periodontal health of women over 40 years of age with cardiovascular disease, a health education program including self-care methods for proper dental plaque management and regular dental checkups are critical. Additionally, awareness of the risks of smoking and drinking would be helpful even for women without cardiovascular diseases.