[기획특집] 2007년 신춘문예 당선자 특집 - 이아영

이아영 고요아침 2007 시조시학 Vol.- No.-

건물에너지성능기준 강화 이후 국내공공기관 업무용 건축물의 디자인경향

이아영 한국생태환경건축학회 2011 한국생태환경건축학회 논문집 Vol.11 No.6

This study focuses on design tendencies in office buildings of public institutions after tightening up Korea’s building energy performance criteria. Important office design criteria and recommendations pay attention to the issues such as building orientation, greening buildings, building form, space and envelop by intensifying building energy performance related laws, government guidelines and evaluation systems. The design tendencies explored in this research are as follows. Office buildings mainly face south and have various types of indoor and roof green spaces not for ecological reasons but for the rest. Building depth becomes thinner and atria are inserted into office buildings to improve daylighting and natural ventilation. Building cores are located on north or west and east sides acting as buffer spaces to reduce heat loss and to block solar radiation. Office building envelop design includes various creative ideas to control or utilize solar energy as like three dimensional or double structured skin and window size variation to cope with the intensity of solar radiation. Further, solar energy generation systems are integrated with building component such as roofs, sun screens and windows. This study demonstrates that government’s reinforcement of the building energy performance criteria drives the change in design methods and approach.

경도인지장애 노인의 일상생활 수행 능력증진을 위한 인지훈련 도구의 사용성 평가

이아영,강민지,강현도,이은민,조유리 고령자･치매작업치료학회 2023 고령자.치매작업치료학회지 Vol.17 No.2

목적: 본 연구는 경도인지장애 노인의 일상생활 수행 능력을 유지하여 삶의 질 향상을 위해 인지훈련 도구를 적용하여 사용성 및 만족도 평가를 시행했다. 연구방법: 본 연구는 2023년 11월 10일부터 11월 20일까지 경기도 소재의 종합병원에서 근무하는 작업⋅물리치료사 30명과 재원 중인 경도인지장애 노인 30명을 대상으로 사용성 및 만족도 평가를 진행했다. 수집된 자료 분석은 SPSS statistics ver. 18.0 프로그램을 사용해 기술통계와 빈도분석을 실시했다. 연구결과: 연구 결과, 전문가 집단에서 효율성 항목이 평균 4.10점으로 가장 높았고 기억용이성이 평균 3.89점으로 가장 낮았다. 노인 집단에서는 심미성이 평균 4.47점으로 가장 높았고 기억 용이성이 평균 3.75 점으로 가장 낮았다. 결론: 본 연구 결과를 근거로 인지훈련 도구 ‘활동 조직화 카드’를 보완함으로써 노인들의 인지기능 회복과 일상생활 수행 능력 유지에 효과적인 중재 기반이 될 것으로 기대된다. Objective : This study conducted a usability and satisfaction evaluation of a cognitive training tool to improve the quality of life of elderly people with mild cognitive impairment by maintaining their ability to perform daily activities. Methods : This study was conducted from November 10 to November 20, 2023, with 30 occupational and physical therapists working at a general hospital in Gyeonggi-do and 30 elderly people with mild cognitive impairment. To analyze the collected data, descriptive statistics and frequency analysis were conducted using SPSS statistics ver. 18.0 program. Results : The results of the study showed that the ’Efficiency’ item was the highest in the professional group with an average score of 4.10, and the ‘Memorability’ was the lowest with an average score of 3.89. In the elderly group, ‘Aesthetics’ was the highest with a mean of 4.47 and ’Memorability’ was the lowest with a mean of 3.75. Conclusion : Based on the results of this study, it is expected that complementing the cognitive training tool 'Activity Organizer Card' will provide an effective intervention base for restoring cognitive function and maintaining daily life performance in the elderly.

여성 노인의 디지털 정보활용능력이 우울에 미치는 영향: 사회적 지지의 매개 효과를 중심으로

이아영,정순둘 한국여성건강간호학회 2023 여성건강간호학회지 Vol.29 No.3

Purpose: The purpose of this study was to investigate the relationship between digital literacy and depressive symptoms, as well as the mediating role of social support in this relationship, among older women (60 years and older) in Korea.Methods: This study analyzed data from the User Experience Evaluation Survey, which was conducted by the Ewha Institute for Age Integration Research to improve the accessibility of digital information for older adults research from May to September 2020. Survey data on depressive symptoms, digital literacy, and social support were analyzed using descriptive statistics, Pearson correlation coefficients, and multiple regression.Results: The factors influencing depressive symptoms among older women included work status (B=–.19, p=.01), social support (B=–.17, p<.001), self-rated health (B=–.13, p=.003), and digital literacy (B=–.10, p=.005), which had an explanatory power of 33%. In addition, social support played a mediating role in the relationship between digital literacy and depressive symptoms (B=–.05, SE=.02; 95% CI, –.09 to –.02).Conclusion: The findings of this study support the need to develop and apply interventions that promote digital literacy among older women to mitigate depressive symptoms by increasing social support.

원심펌프 회전차 Modification시 성능개선에 관한 유동해석 연구

이아영,장현준,이진우,조원정 한국가스학회 2020 한국가스학회지 Vol.24 No.2

Centrifugal pump is a facility that transfers energy to fluid through centrifugal force, which is usually generated by rotating the impeller at high speed, and is a major process facility used in many LNG production bases such as vaporization seawater pump, industrial water and fire extinguishing pump using seawater. to be. Currently, pumps in LNG plant sites are subject to operating conditions that vary depending on the amount of supply desired by the customer for a long period of time. Pumps in particular occupy a large part of the consumption strategy at the plant site, and if the optimum operation condition is not available, it can incur enormous energy loss in long term plant operation. In order to solve this problem, it is necessary to identify the performance deterioration factor through the flow analysis and the result analysis according to the fluctuations of the pump's operating conditions and to determine the optimal operation efficiency. In order to evaluate operation efficiency through experimental techniques, considerable time and cost are incurred, such as on-site operating conditions and manufacturing of experimental equipment. If the performance of the pump is not suitable for the site, and the performance of the pump needs to be reduced, a method of changing the rotation speed or using a special liquid containing high viscosity or solids is used. Especially, in order to prevent disruptions in the operation of LNG production bases, a technology is required to satisfy the required performance conditions by processing the existing impeller of the pump within a short time. Therefore, in this study, the rotation difference of the pump was applied to the ANSYS CFX program by applying the modified 3D modeling shape. In addition, the results obtained from the flow analysis and the curve fitting toolbox of the MATLAB program were analyzed numerically to verify the outer diameter correction theory. 원심펌프는 통상적으로 임펠러를 고속으로 회전시켜 원심력을 통해 유체 에너지를 전달하는 설비로서 기화용해수펌프, 공업용수 및 해수를 사용하는 소화펌프 등 많은 LNG 생산기지에서 사용하고 있는 주요 프로세스 설비이다. 현재 LNG 플랜트 현장에서의 펌프는 장기간 수요처가 원하는 공급량에 따라 운전조건이 변동되어 펌프의 성능이 저하되고 있다. 특히 펌프는 플랜트 현장에서 소비 전략량의 많은 부분을 차지하고 있어, 최적의 운전조건을 찾지 못한다면 장기간 플랜트 운영 시 막대한 에너지 손실비용을 발생할 수 있다. 이러한 문제점을 해결하기 위해 펌프의 운전조건별 변동에 따른 유동해석 및 결과분석을 통하여 성능저하 요인을 파악하고 최적의 운전조건을 확인하는 기술이 필요하다. 실험기법을 통해 운전 효율성 평가를 하기 위해서는 현장의 운전조건과 실험장비 제작 등상당한 시간과 비용이 발생되기 때문에 신속하고 정확한 전산유체역학(CFD) 기법을 활용하여 본 연구에서 결과를도출하였다. 펌프의 성능이 현장의 사정에 맞지 않아 펌프 성능을 줄일 필요가 있는 경우, 회전수에 변화를 주거나고점도 혹은 고형물이 함유된 특수액을 사용하는 방법 등이 사용된다. 특히 LNG 생산기지의 설비운영에 차질이 발생하지 않도록 하기 위해 단시간 내에 펌프의 기존 임펠러를 가공하여 필요한 성능 조건을 만족시키는 기술이 필요하다. 따라서 본 연구에서는 펌프의 기존 회전차를 가공한 3D 모델링 형상을 적용하여 ANSYS CFX 프로그램으로유동해석을 수행하였다. 유동해석 결과와 MATLAB 프로그램의 Curve Fitting Toolbox를 활용하여 수치 해석적으로 분석하여 회전차 외경수정 이론식을 검증하였다.

네트워크약리학을 이용한 생강 활성성분 유래 잠재 타겟 효능 예측

이아영,이준,천진미 한약정보연구회 2020 한약정보연구회지 Vol.8 No.2

Ginger (Zingiber officinale Rosc.) has widely used for the digestive in Korea and is the most popular food spices with a uniquely pungent flavor. Many compounds have been isolated in ginger, such as gingerols, steroids, monoterpenoids, etc. Many studies have reported the bioactivity of ginger extracts and active compounds in ginger such as antioxidant, anti-inflammatory, anti-cancer, and effect on the cardiovascular systems. However, the pharmacological effects of ginger between multiple-compounds and multiple-target were not reported yet. So, we confirmed the holistic pharmacological effect of ginger using a network pharmacology approach. We screened through six compounds (6-gingerol, 6-shogaol, dihydrocapsaicin, poriferastan-3β-ol, β-sitosterol, and stigmasterol) with ADME screening in the TCMSP database and searched 55 genes linked to six active compounds using the STITCH database. The core potential target genes were TP53, BCL2, MAPK8, HSP90AA1, and CYP7AA1. And Functional analysis of target genes was performed through Annotation, Visualization, and Integrated Discovery (DAVID) and the Kyoto Encyclopedia of Genes and Genomes (KEGG) pathway databases; 64 pathways were searched. Among them, pathways related to infectious disease were found the most. Therefore, this study was demonstrated the multi-component, multi-target, and multi-pathway characteristics of ginger, which were able to predict various efficacy properties for ginger compounds.

난시동반 위수정체안에서 경도의 근시가 근거리시력 및 원거리시력에 미치는 영향

이아영,이상목 대한안과학회 2024 대한안과학회지 Vol.65 No.3

Purpose: To investigate the effect of the postoperative spherical equivalent (SE) and astigmatism on the uncorrected near/distance visual acuity (UNVA/UDVA) in monofocal intraocular lens (IOL)-implanted pseudophakic eyes. Methods: Of the eyes that underwent successful cataract surgery and monofocal IOL implantation from January 2020 to September 2021 by a single surgeon, eyes with postoperative astigmatism ≤ 1.5 diopters (D) and -0.75 D ≤ SE < +0.25 D were included. Eyes implanted with a toric IOL or with a best corrected visual acuity under 20/25 were excluded. This was a cross-sectional study, and the correlation of SE/astigmatism and UNVA/UDVA at 1 month postoperatively was analyzed retrospectively. The eyes were divided into mini-myopia (-0.75 D ≤ SE < -0.25 D) and emmetropia (-0.25 D ≤ SE < 0.25 D) groups according to the SE. Results: This study included 118 eyes (86 patients). The UNVA was significantly better in the mini-myopia group than in the emmetropia group (p = 0.009), without a significant difference in UDVA (p = 0.412). Dividing the range into 0.5 D units according to the degree of astigmatism, no significant difference was observed in UNVA/UDVA between the mini-myopia and emmetropia groups in eyes with astigmatism ≤ 1.0 D. However, the mini-myopia group had a significantly better UNVA (p = 0.03), without a significant difference in UDVA (p = 0.879) in eyes with astigmatism > 1.0 D or ≤ 1.5 D. Conclusions: In non-toric monofocal IOL-implanted pseudophakic eyes with postoperative residual astigmatism of ≤ 1.5 D, especially in eyes with astigmatism > 1.0 D and ≤ 1.5 D, the mini-myopia group had a significantly better UNVA compared to the emmetropia group, without a significant difference in UDVA. 목적: 단초점인공수정체 삽입 위수정체안에서 술 후 난시와 구면렌즈대응치가 원·근거리 나안시력에 미치는 영향에 대해 알아보고자 하였다. 대상과 방법: 2020년 1월부터 2021년 9월까지 단초점인공수정체를 이용한 백내장수술을 시행받았으며, 수술 후 난시가 1.5 diopters (D) 이하, 구면렌즈대응치가 -0.75 D 이상 +0.25 D 미만인 눈이 연구에 포함되었다. 난시교정인공수정체가 삽입된 눈과 수술 후 최대교정시력<0.8인 눈은 분석에서 제외하였다. 연구는 단면 연구로 진행되어 수술 1개월째의 구면렌즈대응치·난시와 원·근거리 나안시력의 상관관계가 후향적으로 분석되었다. 대상안들을 구면렌즈대응치에 따라 최소근시군(-0.75 D≤구면렌즈대응치<-0.25 D)과 정시군(-0.25 D≤구면렌즈대응치<+0.25 D)으로 나누어 분석하였다. 결과: 총 118안(86명)이 연구에 포함되었으며, 근거리 나안시력은 최소근시군에서 우수하였으나(p=0.009), 원거리 나안시력은 유의한차이가 없었다. 난시의 정도를 0.5 D 단위로 나누어 보았을 때, 난시가 1.0 D 이하인 눈에서는 두 군 사이 원·근거리 나안시력 모두유의미한 차이를 보이지 않았다. 하지만 난시가 1.0 D 초과, 1.5 D 이하인 눈에서는 최소근시군에서 근거리 나안시력이 우수하였고(p=0.03), 원거리 나안시력에는 유의미한 차이를 보이지 않았다. 결론: 난시교정용이 아닌 단초점인공수정체 삽입 위수정체안에서 수술 후 잔여 난시가 1.5 D 이하, 특히 1.0 D 초과 1.5 D 이하였던경우, 최소근시군에서 정시군에 비하여 근거리 나안시력이 유의하게 좋았지만 원거리 나안시력에는 유의한 차이가 없었다.

Characteristics of Metastatic Mediastinal Lymph Nodes of Non-Small Cell Lung Cancer on Preoperative F-18 FDG PET/CT

이아영,최수정,정경표,박지선,이석모,배상균 대한핵의학회 2014 핵의학 분자영상 Vol.48 No.1

Purpose The aim of this study was to evaluate the characteristicsof PETand CT features of mediastinalmetastatic lymph nodeson F-18 FDG PET/CTand to determine the diagnostic criteriain nodal staging of non-small cell lung cancer. Methods One hundred four non-small cell lung cancerpatients who had preoperative F-18 FDG PET/CT wereincluded. For quantitative analysis, the maximum SUV ofthe primary tumor, maximum SUV of the lymph nodes(SUVmax), size of the lymph nodes, and average Hounsfieldunits (aHUs) and maximum Hounsfield units (mHUs) of thelymph nodes were measured. The SUVmax, SUV ratio of thelymph node to blood pool (LN SUV/blood pool SUV), SUVratio of the lymph node to primary tumor (LN SUV/primarytumor SUV), size, aHU, and mHU were compared betweenthe benign and malignant lymph nodes. Results Among 372 dissected lymph node stations that werepathologically diagnosed after surgery, 49 node stations weremalignant and 323 node stations benign. SUVmax, LN SUV/blood pool SUV, and size were significantly different betweenthe malignant and benign lymph node stations (P <0.0001). However, there was no significant difference in LN SUV/primary tumor SUV (P =0.18), mHU (P =0.42), and aHU(P =0.98). Using receiver-operating characteristic curveanalyses, there was no significant difference among thesethree variables (SUVmax, LN SUV/blood pool SUV, andsize). The optimal cutoff values were 2.9 for SUVmax, 1.4for LN SUV/blood pool SUV, and 5 mm for size. When thecutoff value of SUVmax≥2.9 and size≥5 mm were used incombination, the positive predictive value was 44.2%, and thenegative predictive value was 90.9 %. When we evaluated theresults based on the histology of the primary tumor, thenegative predictive value was 92.3 % in adenocarcinoma(cutoff values of SUVmax≥2.3 and size≥5 mm) and 97.2 %in squamous cell carcinoma (cutoff values of SUVmax≥3.6and size≥8 mm), separately. Conclusions In the lymph node staging of non-small cell lungcancer, SUVmax, LN SUV/blood pool SUV, and size showstatistically significant differences between malignant andbenign lymph nodes. These variables can be used to differentiatemalignant from benign lymph nodes. The combination of theSUVmax and size of lymph node might have a good negativepredictive value.

항암화학요법을 받는 대장암 환자의 증상경험과 삶의 질

이아영,박진희 대한종양간호학회 2022 Asian Oncology Nursing Vol.22 No.3

Purpose: This study aimed to evaluate symptom experience and quality of life (QoL) and to identify the predictors of QoL among colorectal cancer patients undergoing chemotherapy. Methods: A cross-sectional study was conducted on 107 colorectal cancer patients at a university-affiliated hospital between June 1 and July 30, 2021. Functional Assessment of Cancer Therapy-Colorectal (FACT-C), Memorial Symptom Assessment Scale-Short Form (MSAS-SF) were used to assess symptom experience and QoL of these patients. Data were analyzed using Pearson’s correlation, t-test, ANOVA, and hierarchical multiple regression. Results: The mean QoL score for colorectal cancer patients was 88.78±20.08. The most frequently experienced physical and psychological symptoms were numbness/tingling and worrying. Physical and psychological symptoms have a significant negative association with QoL. Perceived economic status was significantly associated with QoL in patients’ general characteristics. The regression analyses showed that high psychological symptoms (β=-.63, p<.001), middle perceived economic status (β=-.22, p=.009) and low perceived economic status (β=-.36, p<.001) were statistically significant in predicting patients’ low QoL. Conclusion: Symptom experience and QoL are essential variables that should be acknowledged when delivering health care to colorectal cancer patients. More attention to the reduction and comprehensive symptom management of psychological distress could improve QoL among colorectal cancer patients.

신재생 연료 혼합 의무화 제도(RFS)의 지속성과 중간지표

이아영,구자공 유기성자원학회 2014 유기물자원화 Vol.22 No.1

최근 신재생 연료에 대한 관심이 증가하고 있다. 그중에서도 신재생 연료 혼합의무화 제도(Renewable Fuel Standard, 이하 RFS)는 정부가 내년부터 시행을 추진하겠다고 밝혔고 그에 따른 관심이 집중되고 있다. RFS란 차량 등의 수송용 연료 공급자로 하여금 자신이 공급하는 연료의 일정비율을 재생연료, 즉 바이오 연료로 혼합하여 공급하도록 의무화하는 제도를 말한다. 이미 유럽, 미국 등 선진국들에서는 에너지원을 다양화하고 있는데 이와 더불어 자국의 농촌 발전을 위해 오래전부터 RFS 를 도입하여 시행해 오고 있다. 또한 RFS를 통해서 이루어 질 기후변화에 대한 대처를 알아보고자 한다. RFS의 지속성을 다섯 개의 축으로 나타내보기도 할 것이다. Interest in renewable fuel of recent has increased. Among them, From next year the government announced that it would enforce the RFS. Interest associated with it are concentrated. The RFS, for manufacturers of transportation fuels such as a vehicle, you are a renewable fuel a certain percentage of the fuel supplied. In other words, it refers to a system of mandatory to supply by mixing biofuels. Already in Europe, America and other developed countries to diversify energy sources and subjected Additionally there since ancient times for its rural development by introducing the RFS takes effect coming. Further and inspect to deal with climate change, which is performed via the RFS. Some even are represented by five axis of the sustainability of the RFS.