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Tuberculosis Diagnosis and Visualization with a Large Vietnamese X-Ray Image Dataset

Intelligent Automation & Soft Computing 2024年第2期39卷 281-299页

作者： Nguyen Trong Vinh Lam Thanh Hien ha Manh Toan Ngo Duc Vinh Do Nang Toan Faculty of Information Technology Lac Hong UniversityBien HoaDong Nai76120Vietnam Institute of Information Technology Vietnam Academy of Science and TechnologyHanoi10072Vietnam Faculty of Information Technology Hanoi University of IndustryHanoi11915Vietnam

Tuberculosis is a dangerous disease to human life,and we need a lot of attempts to stop and reverse ***,in theCOVID-19 pandemic,access to medical services for tuberculosis has become very *** late detection of tuberculosis could lead to danger to patient health,even *** one of the countries heavily affected by the COVID-19 pandemic,andmany residential areas as well as hospitals have to be isolated for a long *** demands a fast and effective tuberculosis diagnosis solution to deal with the difficulty of accessingmedical services,such as an automatic tuberculosis diagnosis *** our study,aiming to build that system,we were interested in the tuberculosis diagnosis problem from the chest X-ray images of Vietnamese *** chest X-ray image is an important data type to diagnose tuberculosis,and it has also received a lot of attention from deep learning *** paper proposed a novel method for tuberculosis diagnosis and visualization using the deeplearning approach with a large Vietnamese X-ray image *** detail,we designed our custom convolutional neural network for the X-ray image classification task and then analyzed the predicted result to provide visualization as a *** prove the performance of our network model,we conducted several experiments to compare it to another study and also to evaluate it with the dataset of this *** support the implementation,we built a specific annotation system for tuberculosis under the requirements of radiologists in the Vietnam National Lung Hospital.A large experiment dataset was also from this hospital,and most of this data was for training the convolutional neural network *** experiment results were evaluated regarding sensitivity,specificity,and *** achieved high scores with a training accuracy score of 0.99,and the testing specificity and sensitivity scores were over *** on the X-ray image classification result,we visualize pr

关键词： Tuberculosis classification Vietnamese chest X-ray deep learning

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“腾笼换鸟”:高校布局调整与区县产业协调发展

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北京大学教育评论 2024年第1期22卷 41-59,189页

作者：林璐朱琼哈巍北京大学教育经济研究所北京100871

本文借助中国高等教育扩招浪潮下新建高校或校区的准实验,考察高校区域布局调整对区县产业协调发展的影响。本文发现,新建高校或校区对所在区县的新企业数量带来了消极影响,但对新企业的产业结构高级化水平起到了显著的积极影响,由此发... 详细信息

本文借助中国高等教育扩招浪潮下新建高校或校区的准实验,考察高校区域布局调整对区县产业协调发展的影响。本文发现,新建高校或校区对所在区县的新企业数量带来了消极影响,但对新企业的产业结构高级化水平起到了显著的积极影响,由此发挥出促进地方产业“腾笼换鸟”的功能。在区域协调发展方面,新建高校或校区在距离省会城市中心较远的地区同样发挥出了促进当地新企业产业结构高级化的功能。从全国跨区域比较来看,新建高校或校区具有“放大”区位劣势的效应,非东部地区的院校或校区对当地新企业产业结构高级化的促进作用较弱。应积极发挥高校通过影响产业布局促进地方产业结构转型升级的作用,实现地方高校特色办学与产业特色发展相结合,推动区域高等教育与经济建设协调发展。

关键词：产业布局高等教育准实验产业结构升级区域协调发展

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On the global existence of weak solutions for the Cucker-Smale-Navier-Stokes system with shear thickening

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Science China Mathematics 2018年第11期61卷 2033-2052页

作者： seung-Yeal ha Hwa Kil Kim Jae-Myoung Kim Jinyeong Park Department of Mathematical Sciences and Research Institute of Mathematics Seoul National University Seoul 08826 Republic of Korea Korea Institute for Advanced Study Seoul 02455 Republic of Korea Department of Mathematics Education Hannam University Daejeon 34430 Republic of Korea Department of Mathematical Sciences Seoul National University Seoul 08826 Republic of Korea Department of Mathematics and Research Institute of Natural Sciences Hanyang University Seoul 04763 Republic of Korea

We study the large-time dynamics of Cucker-Smale(C-S)flocking particles interacting with nonNewtonian incompressible *** of particles and fluids were modeled using the kinetic Cucker-Smale equation for particles and non-Newtonian Navier-Stokes system for fluids,respectively and these two systems are coupled via the drag force,which is the main flocking(alignment)mechanism between particles and *** present a global existence theory for weak solutions to the coupled Cucker-Smale-Navier-Stokes system with shear *** also use a Lyapunov functional approach to show that sufficiently regular solutions approach flocking states exponentially fast in time.

关键词： emergence flocking Cucker-Smale model Navier-Stokes equation non-Newtonian fluid

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2018—2022年广东省5岁以下儿童意外死亡流行分析

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中国儿童保健杂志 2024年第2期32卷 218-222页

作者：哈林娜徐昊立暨南大学基础医学与公共卫生学院广东广州510632 广东省妇幼保健院保健部广东广州510632

目的了解2018—2022年广东省5岁以下儿童意外死亡的主要死因及其流行病学分布情况,为制订进一步的预防措施和干预方法提供理论依据。方法以广东省2018—2022年死亡的5岁以下儿童为研究对象,将ICD10中S00-T98和V01-Y98系列疾病作为分... 详细信息

目的了解2018—2022年广东省5岁以下儿童意外死亡的主要死因及其流行病学分布情况,为制订进一步的预防措施和干预方法提供理论依据。方法以广东省2018—2022年死亡的5岁以下儿童为研究对象,将ICD10中S00-T98和V01-Y98系列疾病作为分类标准筛选出其中意外原因导致死亡的个案,计算相关的率、构成比等,分析儿童意外死亡原因及三间分布。结果 2018—2022年广东省总死亡率为2.94‰,死亡人数21 329人,其中意外死亡人数3 819人(0.53‰),男女性别比为1.29∶1,不同年龄组间意外伤害的性别构成差异有统计学意义(χ^(2)=16.38,P<0.01)。意外死亡原因前三位为意外窒息(1 590/3 819)、溺水(926/3 819)和交通意外(527/3 819)。各年龄段男童意外死亡率均高于女童,差异无统计学意义(χ^(2)=13.68,P=0.19),不同意外死因儿童的年龄组差异有统计学意义(χ^(2)=1 723.28,P<0.01),死前救治情况差异有统计学意义(χ^(2)=174.31,P<0.01)。结论广东省5岁以下儿童死亡的主要原因为意外窒息、溺水。应分年龄采取不同的预防措施提高儿童及家长的意外伤害识别防范意识,降低5岁以下儿童意外死亡率。

关键词： 5岁以下儿童意外死亡意外伤害

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Extracorporeal membrane oxygenation for lung cancer-related life-threatening hypoxia:A case report

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World Journal of Clinical Cases 2022年第25期10卷 8974-8979页

作者： seung Soo Yoo Shin Yup Lee Sun ha Choi Department of Internal Medicine Kyungpook National UniversityDaegu 41404South Korea Lung Cancer Center Kyungpook National University Chilgok HospitalDaegu 41404South Korea

BACKGROUND Life-threatening hypoxia can occur in patients with lung cancer due to bronchial *** membrane oxygenation(ECMO)can be used as a bridge therapy for patients with severe hypoxia not relieved by conventional mechanical ***,the usefulness of chemotherapy in patients with lung cancer receiving ECMO therapy is not well *** SUMMARY A 53-year-old man visited the emergency room with worsening dyspnea for 1 mo.A series of imaging and diagnostic tests were performed,and stageⅢB(cT4N2M0)lung cancer was eventually *** hospital day 3,he experienced dyspnea and hypoxia that was not relieved with oxygen support via a high-flow nasal *** was initiated because his respiratory condition did not improve even with mechanical *** patient then underwent gemcitabine/cisplatin chemotherapy without dose reduction while on *** two cycles of chemotherapy,there was a decrease in the size of the primary tumor in the right main *** the completion of concurrent chemoradiotherapy,a computed tomography scan revealed further improvement in the right main bronchus *** months after a lung cancer diagnosis,the patient did well without any *** ECMO is a potential bridge therapy for respiratory failure in patients with central airway obstruction secondary to lung cancer.

关键词： Extracorporeal membrane oxygen Lung cancer Hypoxia Respiratory failure Chemoradiotherapy Case report

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Experimental Investigation of Flexible hawkmoth-like Wings on the Wing-wake Interaction in Hovering Flight

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Journal of Bionic Engineering 2018年第1期15卷 139-153页

作者： YeongGyun Ryu Jo Won chang Joon Chung Dong-ha Kim Department of Aerospace Engineering Ryerson University Toronto Ontario M5B 2K3 Canada Department of Aeronautical Science and Flight Operation Korea Aerospace University 76 Hanggongdaehak-ro Deogyang-gu Goyang-si Gyeonggi-do 10540 Republic of Korea Aerodynamics Group Korean Air R&D Center Daejeon Metropolitan City 34054 Republic of Korea

To study wing-wake interaction for various wing flexibilities, force measurements and digital particle image velocimetry were carried out on flapping hawkmoth-like wings in a water tank. Wing thickness was employed as a design variable for the wing flexi- bility distributions. Abrupt flap-down and phase delay in flexible wings influenced the behaviors of the Leading-Edge Vortex （LEV） and Trailing-Edge Vortex （TEV）, generated by the previous stroke. While the rigid wing exhibited a detached LEV at the end of the stroke, wing with specific flexibilities obtained attached LEVs. The attached LEVs induced a relatively rapid flow toward the wing surface as a result of encountering the TEV, and the flow caused a higher lift peak. On the other hand, the wings with larger wing deformations generated distinctive changes in LEV and TEV behaviors. The flap-down helped the TEV form closer to the wing surface, and it thus caused a downwash rather than wing-wake interaction. Furthermore, the most flexible wing had a newly-formed pair of LEVs above the wing during the wing reversal, thereby being not able to generate the wing-wake interaction. These results help to understand the different vortex structures generated by flexible wings during the wing reversal and the corresponding effects of wing-wake interaction.

关键词： hovering flight flexible hawkmoth wings wing-wake interaction Digital Particle Image Velocimetry (DPIV)

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High Na-ion conductivity andmechanical integrity of anion-exchanged polymeric hydrogel electrolytes for flexible sodium ion hybrid energy storage

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SusMat 2024年第1期4卷 140-153页

作者： JungWoo Hong harpalsinh H.Rana Jeong Hee Park Jun Su Kim Sang Joon Lee Gun Jang Tae Hoon Kang Kang Ho Shin Sang ha Baek Wooseok Yang Kwang Ho Kim Ju-Hyuk Lee Ho Seok Park School of Chemical Engineering Sungkyunkwan UniversitySuwonRepublic of Korea Clean Energy Research Center Korea Institute of Science and Technology(KIST)SeoulRepublic of Korea KIST-SKKU Carbon-Neutral Research Center Sungkyunkwan University(SKKU)SuwonRepublic of Korea SKKU Institute of Energy Science and Technology(SIEST) Sungkyunkwan UniversitySuwonRepublic of Korea COSMOS LAB/92 Jomaru-ro 385beon-gilBucheon-siRepublic of Korea SKKU Advanced Institute of Nano Technology(SAINT) Sungkyunkwan UniversitySuwonRepublic of Korea Department of Health Sciences and Technology Samsung Advanced Institute for Health Sciences and Technology(SAIHST)Sungkyunkwan UniversitySuwonRepublic of Korea

The polymeric gel electrolytes are attractive owing to their higher ionic conductivities than those of dry polymer electrolytes and lowered water activity for enlarged potential ***,the ionic conductivity and mechanical strength of the Na-ion conducting polymeric gel electrolytes are limited by below 20 mS cm−1 and 2.2 ***,we demonstrate Na-ion conducting and flexible polymeric hydrogel electrolytes of the chemically coupled poly(diallyldimethylammonium chloride)-dextrin-N,N′-methylene-bisacrylamide film immersed in NaClO_(4) solution(ex-DDA-Dex+NaClO_(4))for flexible sodium-ion hybrid capacitors(f-NIHC).In particular,the anion exchange reaction and synergistic interaction of ex-DDA-Dex with the optimum ClO_(4)−enable to greatly improve the ionic conductivity up to 27.63 mS cm−1 at 25◦C and electrochemical stability window up to 2.6 V,whereas the double networking structure leads to achieve both the mechanical strength(7.48 MPa)and softness of hydrogel ***,the f-NIHCs with the ex-DDA-Dex+NaClO_(4) achieved high specific and high-rate capacities of 192.04 F g^(−1)at 500 mA g^(−1)and 116.06 F g^(−1)at 10000 mA g^(−1),respectively,delivering a large energy density of 120.03Wh kg^(−1)at 906Wkg^(−1)and long cyclability of 70%over 500 cycles as well as demonstrating functional operation under mechanical stresses.

关键词： anion exchange chemistry flexible energy storage hybrid energy storage hydrogel electrolytes renewable electrolytes sodium storage

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高校校区空间布局与校企协同创新——基于专精特新“小巨人”企业的微观经验证据

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高等教育研究 2024年第3期45卷 42-53页

作者：张文杰哈巍北京大学教育经济研究所北京100871

基于9200余家专精特新“小巨人”企业相关数据,量化评估高校校区空间布局对校企协同创新的影响发现,“小巨人”企业周边15公里范围内高校校区数量对校企联合申请并获授权专利的数量、校企合作广度与深度均有显著正向影响;从企业维度看,... 详细信息

基于9200余家专精特新“小巨人”企业相关数据,量化评估高校校区空间布局对校企协同创新的影响发现,“小巨人”企业周边15公里范围内高校校区数量对校企联合申请并获授权专利的数量、校企合作广度与深度均有显著正向影响;从企业维度看,显著促进了高校与高技术产业企业的发明专利研发合作,以及与非高技术产业企业、成长期企业的非发明专利研发合作;从高校维度看,这种影响主要来自本科高校尤其是高水平研究型高校;此外,校企协同创新随二者间距离增大而衰减。高校校区布局对企业持有的非校企联合申请专利数量也有显著影响,且这种间接效应大于以上直接效应。今后高校校区空间布局调整需综合考虑高校与企业的适配度,同时重点关注高水平研究型高校校区布局,助力深化校企协同创新。

关键词：校企协同创新高校校区空间布局 “小巨人”企业专利

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Posterior reversible encephalopathy syndrome in a patient with metastatic breast cancer:A case report

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World Journal of Clinical Cases 2022年第7期10卷 2281-2285页

作者： Chae Hyun Song seung Jun Lee ha Ra Jeon Department of Physical Medicine and Rehabilitation National Health Insurance Service Ilsan HospitalGoyang-si Gyeonggi-do 10444South Korea Department of Physical Medicine and Rehabilitation National Health Insurance Service Ilsan HospitalGoyang-si Gyeonggi-do ASI/KR/KS009/GoyangSouth Korea

BACKGROUND Posterior reversible encephalopathy syndrome(PRES)is a neurotoxic encephalopathic state with clinical symptoms such as headache,altered consciousness,visual disturbances,and *** edema occurs predominantly in the posterior occipital and parietal lobes of the *** is caused by various diseases,and its mechanism remains ***,it can be easily diagnosed based on characteristic lesions on magnetic resonance *** SUMMARY A 51-year-old woman with unremarkable past medical history presented with progressively worsening back pain since 2 *** examinations revealed paralumbar muscle tenderness,a large lesion on the right breast and several masslike lesions on both *** blood pressure(BP)was elevated(150/90 mmHg),and did not respond to antihypertensive *** the seventh day of hospitalization,she exhibited a confused mental status and generalized tonicclonic *** magnetic resonance imaging,bilateral cortical and subcortical edema of the occipital lobes,suggestive of PRES,was *** serum calcium was 15.8 mg/*** two days of treatment with nicardipine,elcatonin,and zolendronic acid,her BP was 130/91 mmHg and serum calcium was 10.1 mg/*** patient regained consciousness and her mental status ***-positron emission tomography revealed right breast cancer with extensive *** Although rare,hypercalcemia can lead to PRES by causing uncontrolled *** diagnosis can help prevent severe mental disturbances and even death.

关键词： Posterior reversible encephalopathy syndrome Breast cancer Hypercalcemia Hypertension Case report

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Effect of Al addition on corrosion behavior of high-purity Mg in terms of processing history

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Journal of Magnesium and Alloys 2023年第3期11卷 851-868页

作者： Sang Kyu Woo Byeong-Chan Suh ha Sik Kim chang Dong Yim Helmholtz Zentrum Hereon Max-Planck-Straße 1Geesthacht D-21502Germany Korea Institute of Materials Science 797 Changwondae-roSeongsan-guChangwonGyeongnam 51508Republic of Korea University of Science and Technology 217 Gajeong-roYuseong-guDaejeon 34113Republic of Korea

In this study,the effects of Al addition on the corrosion behavior of pure Mg with controlled impurity contents were systematically analyzed according to the processing *** results revealed that the corrosion behavior of high-purity Mg-Al alloys is strongly related to changes in the microstructure,including theβphase and Al-Mn or Al-Fe phases,and the protectiveness of the surface film according to the Al content and processing *** the as-cast alloys,the corrosion rate increased due to the increase ofβphase as the Al content increased,but in the as-extruded alloys,the corrosion rate,which was high due to intermetallic compounds caused by impurities in the low Al alloy,decreased as the Al content increased,and then increased *** is due to the combined effect of the increase of theβphase and decrease of the impurity effect,and the increase of the dissolved Al *** results suggest that it is necessary to analyze the effect of alloying elements on the corrosion behavior of pure Mg with information concerning the impurity content and processing history.

关键词： Mg High purity Mg-Al alloys Processing history Micro-galvanic Surface film

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