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Development of technique to detect and classify small-scale magnetic flux cancellation and rapid blue-shifted excursions

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Research in Astronomy and Astrophysics 2015年第7期15卷 1012-1026页

作者： Xin Chen Na Deng Derek A.Lamb ju Jing Chang Liu Rui Liu Sung-hong park haimin Wang Space Weather Research Laboratory New Jersey Institute of Technology University Heights Southwest Research Institute CAS Key Laboratory of Geospace Environment Department of Geophysics and Planetary Sciences University of Science and Technology of China Institute for Astronomy Astrophysics Space Applications and Remote Sensing National Observatory of Athens Korea Astronomy and Space Science Institute

We present a set of tools for detecting small-scale solar magnetic cancellations and the disk counterpart of type II spicules（the so-called Rapid Blueshifted Excursions（RBEs））, using line-of-sight photospheric magnetograms and chromospheric spectroscopic observations, respectively. For tracking magnetic cancellation,we improve the Southwest Automatic Magnetic Identification Suite（SWAMIS） so that it is able to detect certain obscure cancellations that can be easily missed. For detecting RBEs, we use a normalized reference profile to reduce false-positive detections caused by the non-uniform background and seeing condition. Similar to the magnetic feature tracking in SWAMIS, we apply a dual-threshold method to enhance the accuracy of RBE detection. These tools are employed to analyze our coordinated observations using the Interferometric BIdimensional Spectrometer at the Dunn Solar Telescope of the National Solar Observatory and hinode. We present the statistical properties of magnetic cancellations and RBEs, and explore their correlation using this data set.

关键词： Sun: chromosphere -- Sun: magnetic fields

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胸部CT肺亚实性结节的计算机辅助检测：基于深度学习减少CT扫描层厚可提高检出率

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国际医学放射学杂志 2021年第3期44卷 361-362页

作者： S.park S.M.Lee W.Kim h.park K.h.jung K.h.Do 俞翔

摘要目前尚缺乏关于计算机辅助检测(CAD)肺亚实性结节(SSN)的最优化的CT层厚的研究。目的在对亚实性结节的检测中,评估CT扫描层厚对CAD效率的影响,并探讨

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Chronic Diseases, health Status and health Service Utilization among Koreans

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health 2014年第16期6卷 2286-2293页

作者： ju Moon park Department of Urban Policy and Administration Incheon National University Incheon South Korea

This study described the self-reported chronic diseases and health status and examined the factors that are associated with effective health service utilization. Descriptive and logistic regression analysis was performed to determine the factors significantly associated with self-rated health, in-patient and out-patient utilization. Self-rated health status was ranked lower among rural residents, lower-income families, married persons, and those with chronic diseases. Chronic diseases such as hypertension, arthritis, melancholy, and diabetes were common and they are associated with poor health of Koreans. The presence of chronic diseases was significant in predicting the likelihood of poor health while socio-economic factors, rather than health-related need factors, had more predictive power of the use of health services. This study provides a unique contribution to the knowledge base of the Korean population. The study findings show that Koreans in poor health status were married, living in rural areas, having chronic diseases and lower income, with a high likelihood of health care utilization among employed individuals, which could significantly help in the public health policy required to address this issue.

关键词： health Services Utilization Chronic Diseases health Status Koreans health Policy

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基于刻蚀处理的池沸腾传热性能实验研究

原子与分子物理学报 2025年第3期42卷 180-188页

作者：王菊萍匡纯纯刘妮上海理工大学制冷技术研究所上海200093

为探究刻蚀处理铜板表面对池沸腾传热性能的改善效果,搭建了可视化实验平台,制备不同刻蚀浓度和刻蚀时间处理的表面,采用去离子水为工质,进行饱和池沸腾实验.结果表明,氨水刻蚀浓度越大,表面的换热性能越强,氨水刻蚀时间越长,表面换热... 详细信息

为探究刻蚀处理铜板表面对池沸腾传热性能的改善效果,搭建了可视化实验平台,制备不同刻蚀浓度和刻蚀时间处理的表面,采用去离子水为工质,进行饱和池沸腾实验.结果表明,氨水刻蚀浓度越大,表面的换热性能越强,氨水刻蚀时间越长,表面换热性能越强.热流密度为43.2 W/cm^(2)时,0.05 mol/L氨水刻蚀4 h表面、0.05 mol/L氨水刻蚀5 h表面、0.05 mol/L氨水刻蚀8 h表面、0.03 mol/L氨水刻蚀4 h表面、0.05 mol/L氨水刻蚀4 h表面和0.10 mol/L氨水刻蚀4 h表面上的换热系数分别提高了46%、92%、105%、36%、45%、78%.此外,对其表面进行表征,结果说明了其优异的沸腾性能.刻蚀处理增强了表面粗糙度,有效面积,从而促进液体的补充,能够在较小的过热度下达到更高的临界热流密度.可视化研究结果表明,刻蚀表面具有更多的成核位点,更小的气泡离开直径和离开频率.这些结果显示出刻蚀表面强化池沸腾换热的潜力.

关键词：池沸腾刻蚀传热性能气泡动力学微纳结构表面

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Disability and health service utilization among old Koreans

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health 2014年第5期6卷 404-409页

作者： ju Moon park Incheon National University Incheon South Korea

This study compared persons with disabilities with those without disabilities in terms of health services utilization and examined the factors associated with the use of inpatient hospital services. Data on a sample of 4040 older adults (65+ years of age) from the Korean Longitudinal Study of Ageing were used. Descriptive and logistic regression analysis was performed examining sample characteristics of participants with and without disabilities and factors significantly associated with health services utilization. This study showed that the elderly with disabilities used significantly more inpatient hospital services than the elderly without disabilities. As expected, poor health was clearly the most influential factor explaining the use of inpatient hospital services. The second most influential factor in determining use of medical services is disability. Persons with disabilities had a twofold or more increase in the odds of using inpatient hospital services. Likewise, the person with chronic condition had also an additional twofold increase in risk for medical services due to the chronic condition. Chronic conditions were clearly the third influential factor explaining the use of inpatient hospital services. Finally, females were a small margin more likely to use inpatient hospital services than males.

关键词： Disability health Status Chronic Condition hospitalization Older Koreans

Equity of access to long-term care among the Korean elderly

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health 2013年第10期5卷 1641-1647页

作者： ju Moon park Department of Urban Policy and Administration University of Incheon Incheon South Korea

The aim of the current study is to examine the extent to which equity in the utilization of longterm care services has been achieved in the Republic of Korea (hereafter Korea), based on the Aday—Andersen Access Framework that takes into consideration a series of variables hypothesized as predictive of utilization. The current study used cross-sectional survey data collected and conducted by the Korea Labor Institute (KLI) between August 1 to December 22, 2006. The sample for this study was 5544 persons who are older than 60 years. The study was extracted from a larger nationally representative cross-sectional survey of 10,255 individuals. The stratified cluster sampling technique was used to draw the survey respondents. A self-administered questionnaire was used to collect the data from the sample. Descriptive and logistic regression analysis was performed examining the relationship between the dependent variable and the independent variables and the relative importance of factors. The results indicate that a universal health insurance system has not yielded a fully equitable distribution of services. The limitation of benefit coverage as well as disparities in consumer cost-sharing and associated patterns of utilization across plans high out-of-pocket payment can be a barrier to health care utilization, which results in inequity and differential long-term care utilization between sub-groups of older adults. health policy reforms in Korea must continue to concentrate on expanding insurance coverage, reducing the inequities reflected in disparities in consumer cost-sharing and associated patterns of utilization across plans, and establishing a financially separate insurance system for poor older adults. The behavioral responses of physicians to the method of reimbursement, and the subsequent impact on overall rates of utilization and expenditures need to be more fully understood. In addition, further research is needed to identify the nonfinancial barriers that persi

关键词： Equity of Access Long-Term Care Utilization Korean Elderly

The h∞ Robust Stability and Performance Conditions for Uncertain Robot Manipulators

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IEEE/CAA Journal of Automatica Sinica 2025年第1期 270-272页

作者： Geun Il Song hae Yeon park jung hoon Kim the Department of Electrical Engineering Pohang University of Science and Technology (POSTECH) the Department of Electrical Engineering Pohang University of Science and Technology (POSTECH) the Institute for Convergence Research and Education in Advanced Technology Yonsei University

Dear Editor,h∞This letter develops a new framework for the robust stability and performance conditions as well as the relevant controller synthesis with respect to uncertain robot *** often exist model uncertainties between the nominal model and the real robot manipulator and disturbances. hence, dealing with their effects plays a crucial role in leading to high tracking performances, as discussed in [1]–[5].

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Radant透镜:替代昂贵的相控阵天线

系统工程与电子技术 1982年第10期 32-36页

作者： Richard h.park ,都世民

《微波杂志》1981年2月号曾介绍过Radant扫描透镜。那篇文章阐述了这种透镜的基本工作原理,并指出采用Radant透镜的一些优点(相对于通常相控阵天线)。本文介绍Radant透镜的基本技术在各种型式

关键词：透镜面扫描自动寻的 Radant 二极管移相器相控阵天线

Real-Time Tunable Gas Sensing Platform Based on SnO_(2) Nanoparticles Activated by Blue Micro-Light-Emitting Diodes

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Nano-Micro Letters 2024年第12期16卷 103-119页

作者： Gi Baek Nam jung-El Ryu Tae hoon Eom Seung ju Kim jun Min Suh Seungmin Lee Sungkyun Choi Cheon Woo Moon Seon ju park Soo Min Lee Byungsoo Kim Sung hyuk park Jin Wook Yang Sangjin Min Sohyeon park Sung hwan Cho hyuk Jin Kim Sang Eon jun Tae hyung Lee Yeong Jae Kim Jae Young Kim Young Joon hong Jong-In Shim hyung-Gi Byun Yongjo park Inkyu park Sang-Wan Ryu ho Won Jang Department of Materials Science and Engineering Seoul National UniversitySeoul 08826Republic of Korea Research Laboratory of Electronics Department of Mechanical EngineeringMassachusetts Institute of TechnologyCambridgeMA 02139USA Ming hsieh Department of Electrical and Computer Engineering University of Southern CaliforniaLos AngelesCA 90089USA Department of Display Materials Engineering Soonchunhyang UniversityAsan 31538Republic of Korea Department of Photonics and Nanoelectronics BK21 FOUR ERICA-ACE CenterHanyang University ERICAAnsan 15588Republic of Korea Department of Nanotechnology and Advanced Materials Engineering Sejong UniversitySeoul 05006Republic of Korea Department of Electronics Information and Communication EngineeringKangwon National UniversitySamcheok 25913Republic of Korea Advance Institute of Convergence Technology Seoul National UniversitySuwon 16229Republic of Korea Department of Mechanical Engineering Korea Advanced Institute of Science and TechnologyDaejeon 34141Republic of Korea Department of Physics Chonnam National UniversityGwangju 500-757Republic of Korea

Micro-light-emitting diodes(μLEDs)have gained significant interest as an activation source for gas sensors owing to their advantages,including room temperature operation and low power ***,despite these benefits,challenges still exist such as a limited range of detectable gases and slow *** this study,we present a blueμLED-integrated light-activated gas sensor array based on SnO_(2)nanoparticles(NPs)that exhibit excellent sensitivity,tunable selectivity,and rapid detection with micro-watt level power *** optimal power forμLED is observed at the highest gas response,supported by finite-difference time-domain ***,we first report the visible light-activated selective detection of reducing gases using noble metal-decorated SnO_(2)*** noble metals induce catalytic interaction with reducing gases,clearly distinguishing Nh3,h2,and ***-time gas monitoring based on a fully hardwareimplemented light-activated sensing array was demonstrated,opening up new avenues for advancements in light-activated electronic nose technologies.

关键词： Micro-LED Gas sensor array Low power consumption Metal decoration Real-time detection

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