|
|
|
题名
|
作者
|
年代
|
出处
|
被引量
|
| 1 | Identifying Pb-free perovskites for solar cells by machine learning显示文摘Recent advances in computing power have enabled the generation of large datasets for materials,enabling data-driven approaches to problem-solving in materials science,including materials discovery.Machine learning is a primary tool for manipulating such large datasets,predicting unknown material properties and uncovering relationships between structure and property.Among state-of-the-art machine learning algorithms,gradient-boosted regression trees(GBRT)are known to provide highly accurate predictions,as well as interpretable analysis based on the importance of features.Here,in a search for lead-free perovskites for use in solar cells,we applied the GBRT algorithm to a dataset of electronic structures for candidate halide double perovskites to predict heat of formation and bandgap.Statistical analysis of the selected features identifies design guidelines for the discovery of new lead-free perovskites. | Jino Im Seongwon Lee Tae-Wook Ko Hyun Woo Kim YunKyong Hyon Hyunju Chang | 2019 | npj Computational Materials2019，，1： | 6 |
| 2 | Local Variability in Temperature, Humidity and Radiation in the BaekduDaegan Mountain Protected Area of Korea显示文摘A novel embedded sensor network records changes in key climatic-environmental variables over a range of altitude in the BaekduDaegan Mountain (BDM) of Gangwon Province in Korea, a protected mountain region with unique biodiversity undergoing climate change research. The investigated area is subdivided into three horizontal north-south study areas. Three variables, temperature (T, ℃), relative humidity (RH, %), and light intensity (LI, lumens m -2 , or lux, lx), have been continuously measured at hourly intervals from June, 2010 to September, 2011 using HOBO H8 devices at 10 fixed study sites. These hourly observations are aggregated to monthly, seasonal and annual mean values, and results are summarized to inaugurate a long-term climate change investigation. A region wide T difference in accordance with altitude, or lapse rate, over the interval is calculated as 0.4℃100 m -1 . T lapse rates change seasonally, with winter lapse rates being greater than those of summer. RH is elevated in summer compared to other seasons. LI within forestland is lower during summer and higher during other seasons. The obtained results could closely relate to the vegetation type and structure and the terrain state since data loggers were located in forestland. | CHAE Heemun LEE Hyunju LEE Sangsin CHEONG Yukyong UM Gijeung MARK Bryan PATRICK Nathan | 2012 | Journal of Mountain Science2012，9，5： | 5 |
| 3 | Fabrication of anti - reflection structure on protective layer of solar cells by hot- embossing method显示文摘 | Kang-Soo Han Hyunju Lee Donghwan Kim Heon Lee | 2009 | Solar Energy Materials & Solar Cells2009，93，： | 1 |
| 4 | Effect of Co-doping on the Photoluminescence Behavior of Zn2SiO4:Mn phosphors 显示文摘 | SOHN Kee-Sun CHO Bonghytm CHANG Hyunju | 1999 | J Electrochem Soc1999，146，6： | 1 |
| 5 | Life cycle assessment of low impact development technologies combined with conventional centralized water systems for the City of Atlanta, Georgia显示文摘低影响的开发(盖) 技术收获的屋顶雨水,和 xeriscaping 例如 bioretention 区域,能控制 stormwater 流量,供应非饮料水,和风景空地。这研究检验把盖技术与一个集中的水系统相结合在一个常规系统(CS ) 上减少负担的一个混合系统(HS ) 。当 stormwater 收集和水在亚特兰大的城市里供应基础结构,和常规美化选择, CS 被定义。学习范围被限制到五个单个家庭的居住地区(SFZ ) ,通过 R-5 的分类 R-1,和四多家庭居住地区(MFZ ) ,通过 RG-5 的分类 RG-2。从 0.4 的人口密度增加(R-1 ) 到 62.2 人每 1,000 m2。我们用 TRACI 2.1 执行了 CS 和 HS 的生命周期评价(LCA ) 比较在生态系统,人的健康,和自然 resources.We 上模仿影响确定淡水消费使用的影响淡水生态系统影响(FEI ) 指示物。测试结果显示 HS 与低人口密度在地区比 CS 有一个更高的 LCA 单个分数;然而,差别作为人口密度增加变得可以忽略。在 SFZ 和 MFZ 合并盖能分别地由 50% 和 25% 的一般水准减少饮料水使用;然而,水积蓄在有高人口密度的地区是可以忽略的(即, RG-5 ) 由于减少的表面区域人均为盖技术可得到。结果证明盖技术有效地减少室外的水需求将因此是一种好选择减少亚特兰大的城市里的水消费影响。 | Hyunju Jeong Osvaldo A. Broesicke Bob Drew Duo Li John C. Crittenden | 2016 | Frontiers of Environmental Science & Engineering2016，10，6： | 1 |
| 6 | Novel Foaming Methods to Fabricate Activated Carbon Reinforced Microcellular Phenolic Foams显示文摘 | Song A Seung HyunJu Oh Bu Gi Kim | 2013 | Composites Science and Technology2013，76，： | 1 |
| 7 | Fabrication of anti-reflection structure on protective layer of solar cells by hot-embossing method显示文摘 | Kang-Soo Han Hyunju Lee | 2009 | Solar Energy Materials & Solar Cells2009，93，： | 1 |
| 8 | Spatiotemporal change in growth of two populations of Asian chum salmon in relation to intraspecific interaction 显示文摘 | Hyunju S Hideaki K Masahide K | 2009 | Fish Science2009，75，： | 1 |
| 9 | Long-term cli- mate-related changes in somatic growth and population dy- namics of Hokkaido chum salmon 显示文摘 | Hyunju S Hideaki K Masahide K | 2011 | Environmental Biol- ogy of Fishes2011，90，： | 1 |
| 10 | Susceptibility of CD24 + ovarian cancer cells to anti-cancer drugs and natural killer cells显示文摘 | Jiae Koh Saet-byul Lee Hyunju Park Hyo Jun Lee Nam Hoon Cho Jongsun Kim | 2012 | Biochemical and Biophysical Research Communications2012，，2： | 1 |
| 11 | Variability in scale growth rates of chum salmon (Oncorhynchus keta) in rela- tion to climate changes in the late 1980s 显示文摘 | Hyunju S Suam K Kibeik S | 2006 | Progress in Oceanography2006，68，： | 1 |
| 12 | Immunogenicity and Safety of Two Different Haemophilus influenzae Type b Conjugate Vaccines in Korean Infants显示文摘 | Kyung Hyo Kim Hyunju Lee Eun Hee Chung Jin Han Kang | 2008 | J Korean Med Sci2008，23，： | 1 |
| 13 | Contribution of W229 to the transglycosylation activity of 4-ct-glueanotransferase from Pyrococcus furiosus显示文摘 | Tang Shuang-yan Yang Sung-Jae Hyunju C H A | 2006 | Bio- chimica et Biophysica Acta2006，1764，10： | 1 |
| 14 | Acute lower extremity arterial thrombosis after intraocular foreign body removal under general anesthesia: A case report and review of literature显示文摘BACKGROUND Surgery,which is a major risk factor for venous thrombosis,has rarely been considered a risk factor for arterial thrombosis.Recent studies have suggested that venous and arterial thromboses share common risk factors and have a bidirectional relationship.Accordingly,there is a growing interest in the risk of arterial thrombosis after surgery.We report a case of acute bilateral lower extremity arterial thromboses that developed after a prolonged surgery.CASE SUMMARY A 59-year-old man was hospitalized for intraocular foreign body removal surgery.He was a heavy-drinking smoker and had untreated hypertension and varicose veins in both legs.The operation was unexpectedly prolonged,lasting 4 h and 45 min.Immediately after emergence from general anesthesia,the patient complained of extreme pain in both legs.After the surgical drape was removed,cyanosis was evident in both feet of the patient.The pulse was not palpable,and continuous-wave Doppler signals were inaudible in the bilateral dorsalis pedis and posterior tibial arteries.Computed tomography angiography confirmed acute bilateral thrombotic occlusion of the popliteal arteries,proximal anterior tibial arteries,and tibioperoneal trunks.Arterial pulse returned in both lower limbs after 6 h of heparin initiation.The patient was discharged on postoperative day 26 without any sequelae.CONCLUSION Acute lower extremity arterial thrombosis can occur after surgery.Anesthesiologists should pay particular attention to patients with risk factors for thrombosis. | Soeun Jeon Jeong-Min Hong Hyeon Jeong Lee Eunsoo Kim Hyunju Lee Yesul Kim Hyun-Su Ri Jae Jung Lee | 2021 | World Journal of Clinical Cases2021，9，27： | 1 |
| 15 | Quality Characteristics and Antioxidant Activity of Buckwheat Soksungjang Prepared with Different Material Formula显示文摘 | Eom Hyunju Kang Hyejeong Park Jungmi | 2013 | Korean Soc Food Sci Nutr2013，42，8： | 1 |
| 16 | Estimated prevalence and trends in smoking among adolescents in South Korea,2005-2021:a nationwide serial study显示文摘Background Although smoking is classified as a risk factor for severe COVID-19 outcomes,there is a scarcity of studies on prevalence of smoking during the COVID-19 pandemic.Thus,this study aims to analyze the trends of prevalence of smoking in adolescents over the COVID-19 pandemic period.Methods The present study used data from middle to high school adolescents between 2005 and 2021 who participated in the Korea Youth Risk Behavior Web-based Survey(KYRBS).We evaluated the smoking prevalence(ever or daily)by year groups and estimated the slope in smoking prevalence before and during the pandemic.Results A total of 1,137,823 adolescents participated in the study[mean age,15.04 years[95%confidence interval(CI)15.03-15.06];and male,52.4%(95%CI 51.7-53.1)].The prevalence of ever smokers was 27.7%(95%CI 27.3-28.1)between 2005 and 2008 but decreased to 9.8%(95%CI 9.3-10.3)in 2021.A consistent trend was found in daily smokers,as the estimates decreased from 5.4%(95%CI 5.2-5.6)between 2005 and 2008 to 2.3%(95%CI 2.1-2.5)in 2021.However,the downward slope in the overall prevalence of ever smokers and daily smokers became less pronounced in the COVID-19 pandemic period than in the pre-pandemic period.In the subgroup with substance use,the decreasing slope in daily smokers was significantly more pronounced during the pandemic than during the pre-pandemic period.Conclusions The proportion of ever smokers and daily smokers showed a less pronounced decreasing trend during the pandemic.The findings of our study provide an overall understanding of the pandemic's impact on smoking prevalence in adolescents. | Hyoin Shin Sangil Park Hyunju Yon Chae Yeon Ban Stephen Turner Seong Ho Cho Youn Ho Shin Jung U.Shin Ai Koyanagi Louis Jacob Lee Smith Chanyang Min Young Joo Lee So Young Kim Jinseok Lee Rosie Kwon Min Ji Koo Guillaume Fond Laurent Boyer Jong Woo Hahn Namwoo Kim Sang Youl Rhee Jae Il Shin Ho Geol Woo Hyeowon Park Hyeon Jin Kim Yoonsung Lee Man S.Kim Eléa Lefkir Vlasta Hadalin Jungwoo Choi Seung Won Lee Dong Keon Yon Sunyoung Kim | 2023 | World Journal of Pediatrics2023，19，4： | 1 |
| 17 | AtHMA1 contributes to the detoxification of excess Zn(Ⅱ) in Arabidopsis显示文摘 | YU-YOUNG K HYUNJU C SHOJI S | 2009 | The Plant Journal2009，58，： | 1 |
| 18 | Mshpy23:a user-friendly,parameterized model of magnetosheath conditions显示文摘Lunar Environment heliospheric X-ray Imager(LEXI)and Solar wind−Magnetosphere−Ionosphere Link Explorer(SMILE)will observe magnetosheath and its boundary motion in soft X-rays for understanding magnetopause reconnection modes under various solar wind conditions after their respective launches in 2024 and 2025.Magnetosheath conditions,namely,plasma density,velocity,and temperature,are key parameters for predicting and analyzing soft X-ray images from the LEXI and SMILE missions.We developed a userfriendly model of magnetosheath that parameterizes number density,velocity,temperature,and magnetic field by utilizing the global Magnetohydrodynamics(MHD)model as well as the pre-existing gas-dynamic and analytic models.Using this parameterized magnetosheath model,scientists can easily reconstruct expected soft X-ray images and utilize them for analysis of observed images of LEXI and SMILE without simulating the complicated global magnetosphere models.First,we created an MHD-based magnetosheath model by running a total of 14 OpenGGCM global MHD simulations under 7 solar wind densities(1,5,10,15,20,25,and 30 cm)and 2 interplanetary magnetic field Bz components(±4 nT),and then parameterizing the results in new magnetosheath conditions.We compared the magnetosheath model result with THEMIS statistical data and it showed good agreement with a weighted Pearson correlation coefficient greater than 0.77,especially for plasma density and plasma velocity.Second,we compiled a suite of magnetosheath models incorporating previous magnetosheath models(gas-dynamic,analytic),and did two case studies to test the performance.The MHD-based model was comparable to or better than the previous models while providing self-consistency among the magnetosheath parameters.Third,we constructed a tool to calculate a soft X-ray image from any given vantage point,which can support the planning and data analysis of the aforementioned LEXI and SMILE missions.A release of the code has been uploaded to a Github repository. | Jaewoong Jung Hyunju Connor Andrew Dimmock Steve Sembay Andrew Read Jan Soucek | 2024 | Earth and Planetary Physics2024，8，1： | 1 |
| 19 | Estimating the subsolar magnetopause position from soft X-ray images using a low-pass image filter显示文摘The Lunar Environment heliospheric X-ray Imager(LEXI)and Solar wind Magnetosphere Ionosphere Link Explorer(SMILE)missions will image the Earth’s dayside magneto pause and cusps in soft X-rays after their respective launches in the near future,to specify glo bal magnetic reconnection modes for varying solar wind conditions.To suppo rt the success of these scientific missions,it is critical to develop techniques that extract the magnetopause locations from the observed soft X-ray images.In this research,we introduce a new geometric equation that calculates the subsolar magnetopause position(RS)from a satellite position,the look direction of the instrument,and the angle at which the X-ray emission is maximized.Two assumptions are used in this method:(1)The look direction where soft X-ray emissions are maximized lies tangent to the magnetopause,and(2)the magnetopause surface near the subsolar point is almost spherical and thus RSis nea rly equal to the radius of the magneto pause curvature.We create synthetic soft X-ray images by using the Open Geospace General Circulation Model(OpenGGCM)global magnetohydrodynamic model,the galactic background,the instrument point spread function,and Poisson noise.We then apply the fast Fourier transform and Gaussian low-pass filte rs to the synthetic images to re move noise and obtain accurate look angles for the soft X-ray pea ks.From the filte red images,we calculate RS and its accuracy for different LEXI locations,look directions,and solar wind densities by using the OpenGGCM subsolar magnetopause location as ground truth.Our method estimates RS with an accuracy of<0.3 RE when the solar wind density exceeds>10 cm-3.The accuracy improves for greater solar wind densities and during southward interplanetary magnetic fields.The method ca ptures the magnetopause motion during southwa rd interplaneta ry magnetic field turnings.Consequently,the technique will enable quantitative analysis of the magnetopause motion and help reveal the dayside reconnection modes for dynamic solar wind conditions.This technique will suppo rt the LEXI and SMILE missions in achieving their scientific o bjectives. | Hyangpyo Kim Hyunju K.Connor Jaewoong Jung Brian M.Walsh David Sibeck Kip D.Kuntz Frederick S.Porter Catriana K.Paw U Rousseau A.Nutter Ramiz Qudsi Rumi Nakamura Michael Collier | 2024 | Earth and Planetary Physics2024，8，1： | 1 |
| 20 | A novel elliptical curve ID cryptography protocol for multi-hop ZigBee sensor networks显示文摘 | Hyunjue Kim Chang Hyun Kim Jong-Moon Chung | 2012 | Wireless communications&mobile computing2012，12，2： | 1 |
您所在的机构暂未开通此部分的功能，请联系管理员