한국형 데이터 시각화 리터러시 평가 개발 및 연구 동향 분석

김하늘,김성희,Kim, Ha-Neul,Kim, Sung-Hee 한국정보통신학회 2021 한국정보통신학회논문지 Vol.25 No.11

최근 정보 기술의 성장에 따라 디지털, 데이터, 인공지능 리터러시와 같은 다양한 리터러시에 대한 연구가 이루어지고 있다. 본 논문에서는, 빅데이터 분석에서 필수적이고, 일상생활 모바일 앱에서도 다양하게 쓰이는 데이터 시각화에 초점을 두고 있으며, 데이터 시각화 활용 능력을 측정하는 데이터 시각화 리터러시 평가 체계에 대해서 다룬다. 2016년에 개발된 영문형 데이터 시각화 활용 능력을 측정하는 평가 체계(VLAT, Visualization Literacy Assessment Test)에 대해서 설명하고, 한국형에 맞춰 개발한 K-VLAT 평가 체계를 소개한다. K-VLAT은 국내 사용자의 맥락에 맞춰 12개의 시각화와 53개의 문항을 웹서비스를 통해 제공한다. 또한, 데이터 시각화 리터러시의 연구 방향을 이해하기 위해서, 영문형 VLAT을 참조한 79건의 논문을 분석하였다. 연구 목적을 4개의 대분야 및 11개의 소분야로 분류하였으며, 데이터 시각화 리터러시와 관련한 인지, 체계에 대한 확장, 교육과의 연계, 사용자 중심형 대시보드 개발 및 효과 평가 등에 활용되고 있다. 이에 따른 K-VLAT의 향후 활용 방안에 대해서 논의한다. With the recent growth of information technology, various literacy such as digital literacy, data literacy, AI literacy is being studied. In this paper, we focus on data visualization literacy as visualization is an essential part of big data analysis and is used in several mobile apps. Visualization Literacy Assessment Test(VLAT) was developed in 2016 and we introduce how the test was developed and modified to a Korean version, K-VLAT. K-VLAT is consisted of 12 visualizations and 53 questions through a website. Additionally, to understand the research trend in visualization literacy we analyzed 81 papers that had cited the VLAT publication. We categorized the research into 4 categories with 11 sub-categories. The area of studies visualization literacy related to was understanding the relation with cognition, expanding the literacy measures, relation with education, utilization for developing user-centric dashboards or using the test to show effectiveness of visualizations. At last, we discuss about different ways to utilize K-VLAT for future research.

운동 전 적용된 지속초음파와 맥동초음파가 운동 유발성 근육 손상의 최대등척성근력과 관절가동범위에 미치는 효과

김하늘,전재근,신성필,Kim, Ha Neul,Jeon, Jae Geun,Shin, Sung Phil 대한물리치료과학회 2021 대한물리치료과학회지 Vol.28 No.2

Background: The purpose of this study was to investigate the effects of pulsed-ultrasound intervention and continued-ultrasound on the MVIC (maximal voluntary isometric contraction) and active ROM (range of motion) recovery of before EIMD (exercise-induced muscle damage). Design: Randomized controlled trial. Methods: Thirty subjects who are student in their 20s at a university participated in this study, these subjects were assigned into three groups, a control group (n=10), experiment group I (n=10) and experiment group II (n=10). The subjects in experimental group were intervened by pulsed-ultrasound and continued-ultrasound, while ones on control group weren't by any intervention after induced EIMD. Results: First, In comparison of the MVIC, in the among group comparison, the MVIC of continued-ultrasound group was significantly larger than those of other groups (p<.005). Second, In the among group comparison, the active extension angle of continued-ultrasound group was significantly smaller than those of other groups (p<.005). Third, In the among group comparison, the active flexion angle of continued-ultrasound group was significantly lager than those of other groups (p<.05). Conclusion: The above results revealed that the continued-ultrasound intervention before an exercise had a significantly improve of muscle function after EIMD. Therefore we can consider the continued ultrasound as a considerable intervention method to prevent or reduce an exercise injury.

운동 전 적용된 지속초음파와 맥동초음파가 운동 유발성 근육 손상의 통증과 근피로대사산물에 미치는 효과

김하늘,전재근,신성필,Kim, Ha Neul,Jeon, Jae Geun,Shin, Sung Phil 대한물리치료과학회 2020 대한물리치료과학회지 Vol.27 No.3

Background: The purpose of this study was to investigate the effects of pulsed-ultrasound intervention and continued-ultrasound on the PPT (pressure pain threshold), CK (creatine kinase) and LDH (lactate dehydrogenase) recovery of before EIMD (exercise-induced muscle damage). Design: Randomized Controlled Trial. Methods: Thirty subjects who are student in their 20s at a university participated in this study, these subjects were assigned into three groups, a control group (n=10), experiment group I (n=10), and experiment group II (n=10). The subjects in experimental group were intervened by pulsed-ultrasound and continued-ultrasound, while ones on control group weren't by any intervention after induced EIMD. Results: First, In the comparison of the PPT, there were significant variations with the lapse the time in three groups (p<.001) and there was a significant interaction of time and group (p<.001). In the among group comparison, the PPT of experimental group II was significantly larger than those of other groups (p<.01). Second, In the comparison of the CK, there were significant variations with the lapse the time in three groups (p<.001) and there was a significant interaction of time and group (p<.001). In the among group comparison, the CK of experimental group II was significantly smaller than those of other groups (p<.001). Third, In the comparison of the LDH, there were significant variations with the lapse the time in three groups (p<.001) and there was a significant interaction of time and group (p<.001). In the among group comparison, the LDH of experimental group II was significantly smaller than those of other groups (p<.001). Conclusion: The above results revealed that the continued-ultrasound intervention before an exercise had a positive effect of muscle function after EIMD. Therefore we can consider the continued ultrasound as a considerable intervention method to prevent or reduce an exercise injury.

대전방지용 Al₂O₃-SiC 복합세라믹 소결체의 제조 및 특성

김하늘,오현명,박영조,고재웅,이현권,Kim, Ha-Neul,Oh, Hyun-Myung,Park, Young-Jo,Ko, Jae-Woong,Lee, Hyun-Kwuon 한국분말야금학회 2018 한국분말재료학회지 (KPMI) Vol.25 No.2

$Al_2O_3-SiC$ ceramic composites are produced using pressureless sintering, and their plasma resistance, electrical resistance, and mechanical properties are evaluated to confirm their applicability as electrostatic-discharge-safe components for semiconductor devices. Through the addition of Mg and Y nitrate sintering aids, it is confirmed that even if SiC content exceeded 10%, complete densification is possible by pressureless sintering. By the uniform distribution of SiC, the total grain growth is suppressed to about $1{\mu}m$; thus an $Al_2O_3-SiC$ sintered body with a high strength over 600 MPa is obtained. The optimum amount of SiC to satisfy all the desired properties of electrostatic-discharge-safe ceramic components is obtained by finding the correlation between the plasma resistance and the electrical resistivity as a function of SiC amount.

레이저 발진용 투명세라믹의 발전사 및 국내/외 연구 동향

김하늘(Ha-Neul Kim),고재웅(Jae-Woong Ko),박영조(Young-Jo Park),오현명(Hyeon-Myeong Oh),이현권(Hyun-Kwuon Lee) 한국세라믹학회 2020 세라미스트 Vol.23 No.3

The most valuable application of transparent ceramics is the laser crystal for the solid-state laser. Especially, since a large-area laser crystal cannot be realized by the single crystal due to the inhomogeneous segregation of laser generating element, the transparent ceramics is considered as the most appropriate material for the high intensity solid-state laser system. In order to generate the laser from the transparent ceramics effectively, it is necessary to remove every single pore for the nearly theoretical inline transmittance as well as to make the ceramics highly durable against the thermal shock induced by heat generation. In this article, while briefly looking back on the global development history of solid-state lasers, we would like to discuss the recent trend of research on transparent ceramics for the solid-state laser in Korea and the direction of future technology development.

열풍 건조한 돼지감자 분말의 영양성분 및 이화학적 특성 분석

김하늘(Ha-Neul Kim),유석영(Seok-Yeong Yu),윤원병(Won-Byong Yoon),장선민(Sun-Min Jang),장용진(Yong-Jin Jang),이옥환(Ok-Hwan Lee) 한국식품과학회 2014 한국식품과학회지 Vol.46 No.1

본 연구는 돼지감자를 이용한 가공식품 개발 시 돼지감자에 대한 기초자료를 제공하고자 돼지감자의 영양성분 및 이화학적 특성을 분석하였다. 돼지감자의 수분함량은 5.06±0.08%, 조회분 5.04±0.03%, 조단백질은 8.30±0.26%, 조지방 0.70±0.16%, 탄수화물은 80.90%이었다. 돼지감자의 총당 함량은 50.48±1.11 mg/g 이었다. 색도를 측정한 결과 L값은 94.16±0.03, a값은 0.32±0.01, b값은 0.30±0.01로 측정되었다. 돼지감자의 수분결합능은 4.04±0.16 g/g, 수분활성도는 0.245±0.005였다. 돼지감자의 총 아미노산은 1.337×104 mg/kg였고, 그 중 필수아미노산의 함량은 2,737 mg/kg였다. 아미노산 중 histidine이 7,305 mg/kg로 가장 많았고 leucine이 184.16 mg/kg로 가장 적은 양을 함유하고 있었다. 유리당은 fructose를 0.8%, maltose는 3.2% 함유하고 있었으며 지방산은 linoleic acid가 0.21%로 가장 높은 수치를 나타냈다. 무기질 함량은 K함량이 2,489 mg%로 가장 많이 함유되어 있었으며, 돼지감자의 비타민 C 함량은 3.43±0.07 mg%으로 측정되었다. 총 페놀 함량과 총 플라보노이드의 함량은 3.06±0.07 mg GAE/g, 1.89±0.03 mg QE/g으로 나타났다. This study investigated the nutritional components and physicochemical characteristics of Jerusalem artichoke. The moisture, crude protein, crude fat, crude ash and carbohydrate content of the Jerusalem artichoke were 5.06±0.08, 8.30±0.26, 0.70±0.16, 5.04±0.03, and 80.90%, respectively. The total sugar content of Jerusalem artichoke was 50.48±1.11 mg/g, and the Hunter color space coordinates were L=94.16±0.03, a=0.32±0.01 and b=0.30±0.01. The water binding capacity and water activity of the Jerusalem artichoke were 4.06±0.16 g/g and 0.245±0.005, respectively. The total aminoacid content of the Jerusalem artichoke was 1.337×104 mg/kg, and essential amino acid was 2,737 mg/kg. The total free sugar of the Jerusalem artichoke was 4.12%. Linoleic acid (0.21%) was found to be a common fatty acid in the Jerusalem artichoke. Among the minerals, potassium (2,489 mg%) was found to be the most abundant in the Jerusalem artichoke. The total phenol and flavonoid contents were 3.06±0.07 mg GAE/g and 1.89±0.03 mg QE/g, respectively. The vitamin C content of the Jerusalem artichoke was 3.43±0.07 mg%.

청소년들의 휴대전화 비행에 영향을 미치는 요인: 애그뉴의 일반긴장이론을 중심으로

김하늘 ( Ha Neul Kim ),황의갑 ( Eui Gab Hwang ) 대한범죄학회 2010 한국범죄학 Vol.4 No.1

This study intended to investigate the factors affecting juveniles`` cell phone delinquency based on the general strain theory. Victimization experience, school achievement, attachment with parents, socioeconomic status were considered as strain and conditional factors. This study used survey data from 3,603 middle to high school students in South Korea. The results showed that victimization experience, attachment with parents, and cell phone addiction were significant factors of cell phone delinquency, thus supporting some propositions of the general strain theory. The effect of socioeconomic status of juveniles was interesting as those in high socioeconomic status showed a higher level cell phone delinquency, which might be related to the situation that only those who afford it could do something bad using their cell phones. The results were discussed to suggest policies to reduce both strain and cell phone delinquency among juveniles.

편측 요통을 호소하는 환자에 있어서 척추 주위 근육의 지방량과 통증과의 관계

김하늘 ( Ha Neul Kim ),김경훈 ( Kyoung Hun Kim ),김주원 ( Joo Won Kim ),진은석 ( Eun Seok Jin ),하인혁 ( In Hyuk Ha ),고동현 ( Dong Hyun Koh ),홍순성 ( Soon Sung Hong ),권혁준 ( Hyeok Joon Kwon ) 한방재활의학과학회 2009 한방재활의학과학회지 Vol.19 No.1

목적: 요통은 임상에서 가장 흔하게 접할 수 있는 질환이며, 동시에 통증으로 인한 근무 결손도나 생활 불편감이 높은 질병이다. 그래서, 많은 연구들이 요통을 일으키는 원인 혹은 악화시키는 유발 인자를 밝혀내려는데 초점이 맞추어져 있다. 이번 연구의 목적은 편측 요통을 호소하는 환자에 있어서 MRI에서 조사된 척추 주위 근육의 지방량과 통증과의 관계에 대해서 알아보는데 있다. 방법: 2007년 11월부터 2008년 4월까지 본원에 요통으로 내원한 환자를 대상으로, 편측 요통을 호소하며, 체질량 지수가 25kg/㎡ 이하이며, 만 20세이상 40세미만인 환자 24명을 대상으로 연구를 진행하였다. MRI에서 조사되어진 L4-5 디스크 레벨의 척추 주위 근육의 지방량을 객관적인 pseudocoloring technique을 이용해 측정하고, paired t-test로 결과를 분석하여 요통이 유발된 측과 지방량의 관계에 대해서 연구하였다. 결과: 요통이 있는 측의 지방량과 요통이 없는 측의 지방량을 측정하여 데이터를 분석하였다. 양측의 지방량과 통증의 유무에 대한 관계는 통계적으로 유의한 수치를 나타냈다(P <0.05). 요통이 있는 측과 없는 측과의 성별, 나이, BMI의 통계적인 차이는 없었으며, 지방량 측정시 남자들이 여자들에 비해 지방량이 더 높게 측정되었다(남자 8.5±5.1%, 여자 6.5±3.6%). 결론: 이 연구를 통해 척추 주위 근육의 지방량과 요통에 대한 상관성의 증거를 제시하였다. 잘 선별되어진 환자의 MRI를 통해 객관적인 방법으로 지방량을 체크를 하였으며, 추후 더 많은 개체수를 이용해 보다 더 정확한 관련성을 파악하고, 나아가 지방량에 따른 통증 강도의 상관성에 대해서 연구가 필요하리라 생각된다. Objectives: Low back pain(LBP) is a common disabling disease in clinical practice and loss of working hours due to this condition is huge. The aim of this study was to determine if there was an association between fat deposit of paraspinal muscles as observed on MRI scans in patients presenting with unilateral LBP. Methods: 24 patients who visiting our hospital with a clinical presentation of unilateral LBP were recruited to the study. Patients were between 20 and 30 years and had a history of unilateral LBP within 12 months. After MRI scaning, the images were saved in DICOM file format for Picture Archiving and Communication System(PACS). The percentage of fat infiltrated area was measured using a pseudocoloring technique. Data were analyzed comparing the fat deposits of the muscles on the symptomatic and asymptomatic sides. Paired t-test was used to find the difference between the measurements of fat tissue in individual patients. Results: The amount of fat in the symptomatic side was 7.6±4.51%, asymptomatic side was 6.7±4.29%. There were increases, statistically significant, in the fat changes of the paraspinal muscles at the L4-5 disc level(P <0.05). Also, men were likely than women to have more fat deposit in symptomatic side(men 8.5±5.1%, women 6.5±3.6%). Conclusions: The amount of fat in the symptomatic side shows significantly increased than asymptomatic side in the paraspinal muscles at the L4-5 disc level. It suggested that fat infiltration in the muscles associated with LBP. Further studies will be needed to confirm the relationship between the muscle fatty changes and LBP in the large sample size. In addition, the correlation of pain severity with fat infiltration needs to be addressed.

감염 특화 종합병원 설계

김하늘(Kim, Ha-Neul),이은채(Lee, Eun-Chae),김태현(Kim, Tae-hyun),이현진(Lee, Hyun-jin) 한국생태환경건축학회 2017 한국생태환경건축학회 학술발표대회 논문집 Vol.17 No.2

TD-3DCRT를 이용한 좌측 유방암 방사선 치료계획 시 Dynamic Jaw의 유용성 평가 : Phantom 연구

김하늘(Ha-Neul Kim),이도화(Do-Hwa Lee),정현서(Hyun-Seo Jung),정지범(Ji-Beom Jeong),정재홍(Jae-Hong Jung),이영진(Youngjin Lee) 대한전자공학회 2021 대한전자공학회 학술대회 Vol.2021 No.11