Obtaining Healthy Oocytes from Superovulation of Spontaneous Diabetes Mellitus (sDM) Rats using Osmotic Pump

Jihye Jang,Donghun Kang,Hoseung Kwak,Eunjoo Lee,Daeyoung Kim 한국수정란이식학회 2017 한국수정란이식학회 학술대회 Vol.2017 No.05

Superovulation is a technique to acquire rats to produce many eggs than normal rats. Superovulated eggs were used to make cloned animals through somatic cell nuclear transfer technology (SCNT). Healthy and valuable oocyte retrieval is essential for successful somatic cell nuclear transfer. Superovulation is also essential to maximize to the yield of IVF-derived rat eggs. Osmotic pumps (Alzet®) are miniature in order to provide research with a convenient, and reliable alternative to chronic injections. Acquiring superovulated oocytes through osmotic pump in minimizing irritation to the uterus and ovaries are competitive. We investigated the effects of pregnant mare serum gonadotropin (PMSG) and human Chorionic Gonadotropin (hCG) using osmotic pump in sDM rat. Adult female rats at 11 wks of age were used for superovulation. The response to PMSG and hCG were examined by osmotic pump of 150 IU/kg PMSG + 75 IU/kg hCG or 150 IU/kg PMSG + 150 IU/kg hCG or 300 IU/kg PMSG + 150 IU/kg hCG or 300 IU/kg PMSG + 300 IU/kg hCG. HCG was administered 48 hrs later after administration of PMSG. Oocytes were collected from the oviducts 16–18 hrs after hCG administration. Superovulation was significantly higher in rats administrated 150 IU/kg PMSG + 75 IU/kg hCG. This study demonstrated that healthy oocytes were produced in DM rat by PMSG and hCG that flowed through the osmotic pump ameliorate on uterus and ovaries.

Lattice Boltzmann Study of the Water Droplet on a Surface Corrugated with Nanopillars#

Jihye Jang,박성우,김효정,Mohammad A. Matin,Zhengqing Zhang,장준경 대한화학회 2015 Bulletin of the Korean Chemical Society Vol.36 No.3

Using the lattice Boltzmann method, we simulated a water droplet on a surface covered with rectangular or parabolic pillars. With increasing spacing between the pillars, the transition from the Cassie to Wenzel states of the droplet was observed. The critical spacing at which the transition occurs and the contact angle of droplet were compared with those obtained from the macroscopic theories of Cassie and Wenzel. The present simulation revealed intermediate states where the droplet was partially impaled by the pillars. Even in the Cassie state, the droplet significantly penetrated down in the gap between the parabolic pillars.

Preparation and Properties of PHEMA Hydrogels for Color Soft Contact Lens Containing Reactive Dye

JiHye JANG,JungHyun LEE,GeonU KIM,JiHoon Park,Yang-Il HUH 한국고분자학회 2016 한국고분자학회 학술대회 연구논문 초록집 Vol.41 No.2

Development and Evaluation of Binary Scale for Korean Geriatric Health Promotion Behavior

Jang, Jihye,Shin, Yong Soon 한국간호과학회 2021 한국간호과학회 학술대회 Vol.2021 No.10

Aim(s): In Korea, life expectancy has continuously increased due to the development of medical technology and the improvement of the economic level, and efforts and interest in living a healthy life without suffering from diseases during the increased life expectancy are increasing. The elderly can achieve healthy aging by maintaining and promoting cognitive ability, physical function, mental function, and social function by practicing health-promotion behavior, and can improve the quality of life in old age. This study was attempted to develop the Korean Geriatric Health Promotion Behavior Scale (K-GHPBS), and to verify the reliability and validity of this scale. Method(s): Process for development and evaluation the validity of the K-GHPBS was designed based on DeVellis" scale development guidelines, and proceeded to the development phase and the validation phase of the scale. In the development phase of the scale, a conceptual framework was established after an extensive review of the literature, and using original questions. 45 initial items were derived based on in-depth interviews with 16 older adults. The applicability of this study was confirmed after verifying the content validity of the 10 experts and by conducting preliminary research on 20 community-dwelling older adults aged 65 or older. During the verification phase, data were collected throughout October to November 2019 from 300 community-dwelling older adults aged 65 or older. The collected data were verified using item analysis, exploratory factor analysis, confirmatory factor analysis, construct validity and criterion validity. Reliability was verified by calculating the internal consistency index, KR-20, and test-retest reliability. Result(s): The initial the K-GHPBS"s Item-level content validity (I-CVI) value was .80∼1.00 and scale-level content validity index (S-CVI/Ave) value was .97. As a result of an exploratory factor analysis using 42 items selected from the item analysis, 28 items for 5 factors were extracted 52.51% of the total variance. Confirmatory factor analysis showed 5 factors including 23 items explaining and 5 distinct factors were ‘exercise and physical activity’, ‘chronic disease management’, ‘healthy lifestyle’, ‘maintain cognitive function’ and ‘acceptance with optimism’. In this study, there was a positive correlation (r=.39, p<.001) between the Health Self Rating Scale and the K-GHPBS, indicating that convergent validity was established. There was an inverse correlation (r=-.16, p=.006) between the Geriatric Depression Scale Short Form (GDS-SF) and the K-GHPBS, indicating that discriminant validity was established. According to the depression score, the mild depression and normal group had higher K-GHPBS scores than the depression group (F=4.67, p=.010). Criterion–related validity compared to the HPLPⅡ showed significant correlation (r=.60, p<.001). Reliability was verified by evaluating stability by performing a 4-week test-retest on 23 elderly subjects Pearson"s correlation coefficient was .98. and internal consistency reliability KR-20 was .79. Conclusion(s): The K-GHPBS developed in this study were consistent as a self-report questionnaire with a total of 5 factors 23 items. Each item was composed using the ‘yes or no’ binary scale. The K-GHPBS is a scale that can measure the health-promotion behavior for aged in a multidimensional manner and has validity and reliability.

Task Scheduling and Offloading for Autonomous Driving in Edge Computing Environment

Jihye Jang,Deok-Hwan Kim 한국차세대컴퓨팅학회 2021 한국차세대컴퓨팅학회 학술대회 Vol.2021 No.11

As autonomous driving and connected car technology advance, various deep learning applications for autonomous vehicles and complex traffic situations are increasing. Autonomous vehicles must collect and process vast amounts of sensor data to support various deep learning applications, but vehicles have limited computing resources to perform complex deep learning operations. Therefore, edge computing is a promising solution to complement the limitations of autonomous vehicles. In this paper, we design edge computing for efficient task processing in an autonomous driving environment using a driving simulator. Also, we propose a task scheduling and offloading method which determines the target server to offload a task according to the characteristics of the task and the computing resources. The effectiveness of the proposed method is verified through experimental evaluation in an autonomous driving environment, supporting multiple deep learning services that we established by using a driving simulator.

A behavioral study on the purchase intention of dried rice noodles with functionality by elderly consumers using the theory of planned behavior: focused on household types

Jihye Jang,Gwang-woong Go 한국산업식품공학회 2022 학술대회 및 심포지엄 Vol.2022 No.11

공공 분야의 클라우드 컴퓨팅 도입을 위한 평가 기준에 관한 연구

장지혜 ( Jihye Jang ),이석주 ( Seoukju Lee ),백두권 ( Dookwon Baik ) 한국정보처리학회 2016 한국정보처리학회 학술대회논문집 Vol.23 No.1

정부는 K-ICT 클라우드 활성화를 위해 정부 3.0 클라우드 추진 계획을 발표하고 관련 제도와 법률을 제정하여 클라우드 서비스 도입을 위한 정책을 추진하고 있다. 그러나 공공 분야의 클라우드 컴퓨팅 도입은 기존의 법률, 제도, 관행의 통제로 인해 미미한 실정이다. 공공 기관의 클라우드 컴퓨팅 도입 활성화를 위해 중요한 부분은 클라우드 컴퓨팅의 성능과 품질 등에 대한 특성을 파악하는 것이다. 클라우드 컴퓨팅의 특성을 알아야만 적격의 클라우드 컴퓨팅 사업자 선정이 가능하게 된다. 유럽 연합(European Commission)에서는 클라우드 컴퓨팅의 특성을 서비스 성능과 품질에 대한 일반특성, 기술성, 경제성으로 분류하고 있다. 그러나 클라우드 도입을 위한 설계 시 공공 기관 담당자는 클라우드 특성의 각 부문별 하위 항목에 대한 상세한 내용과 수준까지 객관적으로 평가하기 어렵다. 이러한 문제를 해결하고자 본 연구는 클라우드 컴퓨팅의 성능과 품질 및 기술 특성을 파악하여 각 특성에 대한 가중치를 구하고 우선순위 측정을 통해 사업자 선정을 위한 평가 기준으로 적용하는 기법을 제안한다.

쌀로 만든 기능성 건면에 대한 고령층 구매의도 연구: 계획적 행동이론 중심으로

장지혜(Jihye Jang),김도형(Dohyung Kim),김현경(Hyun Kyung Kim),김예진(Yejin Kim),강수민(Sumin Kang),김하윤(Hayoon Kim),고광웅(Gwang-woong Go) 한국식품과학회 2023 한국식품과학회지 Vol.55 No.1

2018년 국가수준 성인의 쓰기 능력 평가 결과 분석

장지혜 ( Jang Jihye ),서보영 ( Seo Boyoung ),김종철 ( Kim Jongcheol ) 국어교육학회 2020 國語敎育學硏究 Vol.55 No.1

본 연구는 국립국어원에서 시행한 2018년 국민의 국어 능력 실태 조사 중 쓰기 영역의 평가 결과를 분석하고 논의하는 것을 목적으로 한다. 조사는 만 20세~69세의 성인 남녀 3,000명을 대상으로 시행되었으며 인구 분포 통계를 활용한 2단계 층화 표본 추출(stratified sampling) 방식을 적용하여 조사 대상의 대표성을 확보하였다. 또한 ‘성별, 연령대, 지역 규모, 학력군, 직업군’의 5개 변인을 설정하여 각 변인별로 실제 인구 분포 비율에 비례하게 조사 대상이 표집될 수 있도록 표본을 추출하였다. 영역별 평균 원 점수는 쓰기 영역이 121.61(250점 만점)을 보였다. 조사 대상 국민의 평균적인 쓰기 능력은 2수준에 해당하며, 특히 2수준 이하 비율이 전체의 69.6%여서 전반적인 쓰기 능력이 저조한 것으로 나타났다. 본 조사에서는 2013년과 2018년의 조사도구 간 동등화를 바탕으로 연도별 국어능력의 결과를 상호 비교하는 것이 가능하도록 설계하였으며 동백분위 동등화(equipercentile equating)의 방식을 통해 2013년과 2018년 국어능력을 비교하였다. 그 결과 2018년도의 쓰기 영역 평균 점수는 2013년도 쓰기 영역 평균 점수 120.2와 비교하였을 때 약 1점 정도 상승하였다. 전체적인 평균은 2013년과 유사한 수준이나 3, 4수준의 비율은 소폭 증가한 반면 1수준의 비율이 큰 폭으로 증가한 것으로 보아, 국민의 국어능력 중 쓰기 능력은 상하위 수준 집단 간 편차가 다소 발생하고 있음을 알 수 있다. 연령대별로는 50대 이상, 지역 규모별로는 읍면 지역, 직업군별로는 육체노동, 학력군별로는 고졸 미만에 우선적으로 정책적·교육적 대처가 요구되나, 그밖의 모든 집단에서도 2수준 이하의 비율이 60% 이상이므로 특정 집단이 아닌 대국민 쓰기 교육과 구체적 대안 마련이 필요하다. 이러한 논의 결과를 바탕으로, 다음의 네 가지 과제를 제안하였다. 첫째, 다양한 쓰기 학습 기회 및 쓰기 능력 수준에 맞춘 교육 프로그램의 제공. 둘째, 쓰기를 통한 사회적 참여를 통해 생애에 걸쳐 쓰기 능력을 활용할 수 있도록 하는 국가적 차원에서의 장려. 셋째, 실제성이 확보된 조사 도구 및 최선의 수행을 이끌어낼 수 있는 조사 방법의 마련. 넷째, 피험자 변인에 대한 분석을 통해 정책 마련의 토대 확보 등이다. The purpose of this study was to analyze and discuss the results of the 2018 assessment of Korean language ability of adults, focusing on writing ability. This survey was conducted with 3,000 adult men and women aged 20 to 69. The results showed that the average writing score was 121.61 in 2018, about one point higher than in 2013. This performance is generally very poor. In the 2018 survey, the cut-off score of the 2013 study was applied, but the score of the division was newly formulated through the equalization of the survey tools, and each grade was classified into levels 4, 3, 2, and 1. In addition, except for the variables newly introduced in 2018, the change in the participants’ language ability was confirmed based on the variables set in 2013, namely sex, age, regional scale, education, and occupation. In 2018, the ratio of level 1 increased(+9.4%p), so the order of ratio of levels 2, 1, 3, and 4, compared to the ratio of levels 2, 3, 1, and 4 in writing in 2013. The overall average was similar to that of 2013 but the ratios of levels 3, 4 increased slightly, and 1 increased greatly, indicating that there was a slight variation in the writing ability of the Korean adults. When the participants were grouped by variable and ranked according to their writing skills, the scores of participants in their 20s, 30s, were higher than the scores of participants in their 40s and 50s. In terms of region size, the scores of participants in the urban areas were higher than the scores of participants in rural areas. The ranking by occupation showed that the scores of mental workers were higher than the scores of manual workers. Then, the ranking by education showed that university graduates had higher scores than high school graduates and middle school graduates. However, there was no difference between the scores of men and those of women. Based on the findings, we propose the following. First, to improve writing ability among the general public, practical educational programs should be developed. Second, social participation through writing should be encouraged at the national level and people should be encouraged to use their writing skills throughout their lifetime. Third, a large-scale writing assessment environment should be created to improve the validity, reliability, and authenticity of the evaluation. Finally, the subject variables should be closely analyzed to inform policy-making.

우리나라 EFL 학습자들의 쓰기 불안이 영어쓰기 수행에 미치는 영향 분석

장지혜(Jihye Jang),나경희(Kyeong-Hee Rha) 한국중원언어학회 2014 언어학연구 Vol.0 No.30

The purpose of this study is to investigate and analyze the effect of English learners" writing anxiety on their writing performance. In order to accomplish this purpose, the following research question was examined in particular: Was there a correlation between writing apprehension, negative perception, fear of evaluation, and avoidance, on overall writing performance? To answer this, question 42 pieces of writing collected from 14 students were evaluated by the above four criteria of anxiety. Also, a writing apprehension survey was administered to those 14 English learners who performed English writings. The analysis of the survey indicated that there was a correlation between writing anxiety and students" writing performance. That might mean that teachers should try to provide less evaluated, comfortable, non-defensive atmosphere for English learners. Based on these results, this study attempted to provide implications for the effective English writing instructions in the classroom.