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.

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.

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.

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

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

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.

Facile Synthesis of Pt Nanoparticle and Graphene Composite Materials: Comparison of Electrocatalytic Activity with Analogous CNT Composite

Lee, Jihye,Jang, Ho Young,Jung, Insub,Yoon, Yeoheung,Jang, Hee-Jeong,Lee, Hyoyoung,Park, Sungho Korean Chemical Society 2014 Bulletin of the Korean Chemical Society Vol.35 No.7

Here, we present a facile method to synthesize Pt nanoparticles (NPs) and graphene composite materials (Pt/G) via vacuum filtration. Anodic aluminum oxide (AAO) templates were used to separate Pt/G composite and liquid phase. This method can be used to easily tune the mass ratio of Pt NPs and graphene. Pt NPs, graphene, and carbon nanotubes (CNTs) as building blocks were characterized by a variety of techniques such as scanning electron microscopy, UV-Vis spectroscopy, and Raman spectroscopy. We compared the electrocatalytic activities of Pt/G with Pt NP and CNT films (Pt/CNT) by cyclic voltammetry (CV), CO oxidation, and methanol oxidation. Pt/G was much more stable than pure Pt films. Also, Pt/G had better electrochemical activity, CO tolerance and methanol oxidation than Pt/CNT loaded with the same amount of Pt NPs due to the better dispersion of Pt NPs on graphene flakes without aggregation. We further synthesized Au@Pt disk/G and Pt nanorods/G to determine if our synthetic method can be applied to other NP shapes such as nanodisks and nanorods, for further electrocatalysis studies.

부산지역의 다문화웨딩디렉터 양성을 위한 교육과정 개발 기초연구

장지혜(Jang Jihye),황미혜(Hwang Mihye),로리타(LOLITHA SAUR ANDRAWINA) 한국아시아학회 2021 아시아연구 Vol.24 No.1

본 연구는 첫째, 다문화배우자들의 경제·사회적으로 안정된 정착을 위한 직업 교육 방안을 제시하고, 둘째, 향후 결혼을 하려는 다문화 예비 신랑··신부들의 요구에 부합하는 웨딩 전문가를 양성하며, 셋째, 이들이 결혼생활을 잘 유지할 수 있도록 도움을 주는 다문화웨딩디렉터를 양성하기 위한 체계적이고 전문적인 교육과정을 개발하는데 목표가 있다. 본 연구의 목적을 달성하기 위해 역할이론을 근거로 하여 다문화배우자들과 웨딩업 이해종사자에 대한 심층인터뷰를 진행하였다. 이를 통해 다문화배우자들의 전문 지식수준과 웨딩 관련 교육에 대한 요구도를 조사하였다. 또한, 웨딩업 이해종사자들이 제안하는 다문화웨딩디렉터로서의 역할에 부합되는 교육과정에 반영되어야 할 내용을 분석하였다. 그리고 문헌연구를 통해 관련 교육을 실시하고 있는 기관을 정규 교육기관과 비정규 교육기관으로 분류하여, 각 기관별 교육과정 실태와 관련 자격증 등을 조사하였다. 또한, 이들 교육기관에서 실시하고 있는 공통적인 교육과정을 주제별로 분류하였으며, 이러한 연구결과를 토대로 다문화웨딩디렉터 교육 프로그램 개발에 대한 기초 연구 자료를 마련하고자 하였다. This study aims to propose plans for secure settlements of solution multicultural families through out analysis of in-depth interview in role theory. The major results from analysis of qualitative interview are as follow classified that educational institution is accomplished Wedding Director training to divide into formal educational institution and irregular educational institution to evaluate status of each agency training courses. This study investigated the needs of multicultural family professionalism standards and educational programs. Therefore, after examining the curriculum of the current wedding director education institution against a theoretical background, we categorized the common curriculum conducted by each institution by subject. Based on these results, we develop systematic and specialized training programs for proceeding effectively Multicultural Wedding Director training to reflect incumbent Multicultural Wedding Director educational needs when we exploit Multicultural Wedding Director training programs.

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

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.