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Federated Feature Concatenate Method for Heterogeneous Computing in Federated Learning

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计算机、材料和连续体（英文） 2023年第4期75卷 351-371页

作者： Wu-Chun Chung Yung-chin Chang ching-Hsien hsu Chih-Hung Chang Che-Lun Hung Department of Information and Computer Engineering Chung Yuan Christian UniversityTaoyuanTaiwan Department of Computer Science and Information Engineering Asia UniversityTaichungTaiwan Department of Medical Research China Medical University HospitalChina Medical UniversityTaichungTaiwan Department of Computer Science&Communication Engineering Providence UniversityTaichungTaiwan Institute of Biomedical Informatics National Yang Ming Chiao Tung UniversityTaipeiTaiwan

Federated learning is an emerging machine learning techniquethat enables clients to collaboratively train a deep learning model withoutuploading raw data to the aggregation server. Each client may be equippedwith different computing resources for model training. The client equippedwith a lower computing capability requires more time for model training,resulting in a prolonged training time in federated learning. Moreover, it mayfail to train the entire model because of the out-of-memory issue. This studyaims to tackle these problems and propose the federated feature concatenate(FedFC) method for federated learning considering heterogeneous *** leverages the model splitting and feature concatenate for offloadinga portion of the training loads from clients to the aggregation server. Eachclient in FedFC can collaboratively train a model with different cutting ***, the specific features learned in the deeper layer of the serversidemodel are more identical for the data class classification. Accordingly,FedFC can reduce the computation loading for the resource-constrainedclient and accelerate the convergence time. The performance effectiveness isverified by considering different dataset scenarios, such as data and classimbalance for the participant clients in the experiments. The performanceimpacts of different cutting layers are evaluated during the model *** experimental results show that the co-adapted features have a criticalimpact on the adequate classification of the deep learning model. Overall,FedFC not only shortens the convergence time, but also improves the bestaccuracy by up to 5.9% and 14.5% when compared to conventional federatedlearning and splitfed, respectively. In conclusion, the proposed approach isfeasible and effective for heterogeneous clients in federated learning.

关键词： Federated learning deep learning artificial intelligence heterogeneous computing

Unusual capitate fracture with dorsal shearing pattern and concomitant carpometacarpal dislocation with a 6-year follow-up:A case report

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World Journal of Clinical Cases 2023年第9期11卷 2060-2066页

作者： chien-Cheng Lai hsu-Wei Fang Chih-Hung Chang Jwo-Luen Pao Chun-chien Chang Yeong-Jang Chen Department of Orthopedic Surgery Far Eastern Memorial HospitalNew Taipei City 220Taiwan Department of Chemical Engineering and Biotechnology National Taipei University of TechnologyTaipei 106Taiwan Graduate School of Biotechnology and Bioengineering Yuan Ze UniversityTaoyuan 320Taiwan Department of Orthopedics Fu Jen Catholic University HospitalFu Jen Catholic UniversityNew Taipei City 243Taiwan

BACKGROUND Isolated capitate fractures are rare carpal *** high-energy injuries,capitate fractures are usually associated with other carpal fractures or ligament *** management of capitate fractures depends on the fracture ***,we report an unusual capitate fracture with a dorsal shearing pattern and concomitant carpometacarpal dislocation,with a 6-year *** the best of our knowledge,this fracture pattern and surgical management have not been previously *** SUMMARY A 28-year-old man presented with left-hand volar tenderness and decreased grip strength that persisted for one month after a traffic *** showed a distal capitate fracture with carpometacarpal joint *** tomography(CT)revealed a distal capitate fracture with carpometacarpal joint *** distal fragment was rotated by 90°in the sagittal plane,and an oblique shearing fracture pattern was *** reduction and internal fixation(ORIF)with a locking plate were performed using the dorsal *** imaging studies performed 3 mo and 6 years following surgery revealed a healed fracture,and the Disabilities of the Arm,Shoulder,and Hand and visual analog scale scores were significantly *** CT can detect capitate fractures with dorsal shearing pattern and concomitant carpometacarpal *** using a locking plate are possible.

关键词： Isolated capitate fracture Carpometacarpal dislocation Dorsal intercarpal ligament Case report

20.231 Gbit/s tricolor red/green/blue laser diode based bidirectional signal remodulation visible-light communication system

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Photonics Research 2018年第5期6卷 422-426页

作者： LIANG-YU WEI chin-WEI hsu CHI-WAI CHOW chien-HUNG YEH Department of Photonics and Institute of Electro-Optical Engineering Taiwan Chiao Tung UniversityHsinchu 30010China Department of Electronic Engineering The Chinese University of Hong KongSha TinHong KongChina Department of Photonics Feng Chia UniversityTaichung 40724China

We propose and experimentally demonstrate a recorded 1-m bidirectional 20.231-Gbit/s tricolor R/G/B laser diode(LD) based visible-light communication(VLC) system supporting signal remodulation. In the signal remodulation system, an LD source is not needed at the client side. The client reuses the downstream signal sent from the central office(CO) and remodulates it to produce the upstream signal. As the LD sources are located at the CO, the laser wavelength and temperature managements at the cost-sensitive client side are not *** is the first demonstration, to our knowledge, of a >20 Gbit∕s data rate tricolor R/G/B VLC signal transmission supporting upstream remodulation.

关键词： VLC LD Gbit/s tricolor red/green/blue laser diode based bidirectional signal remodulation visible-light communication system OOK

NWA 13943(CK5型)碳质球粒陨石的矿物岩石学和稳定同位素组成研究

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天文学报 2024年第1期65卷 43-52页

作者：梅奥新徐伟彪中国科学院紫金山天文台南京210023 中国科学技术大学天文与空间科学学院合肥230026

CK型陨石是一类高度氧化的碳质球粒陨石,金属/磁铁矿的比值接近零.与其它类型的碳质球粒陨石(岩石类型:1-3)不同,大多数CK型陨石在母体上经历了强烈的热变质过程(550-1270K),以4-6型为主.多项证据表明,CK和CV3型陨石具有成因联系.但是,... 详细信息

CK型陨石是一类高度氧化的碳质球粒陨石,金属/磁铁矿的比值接近零.与其它类型的碳质球粒陨石(岩石类型:1-3)不同,大多数CK型陨石在母体上经历了强烈的热变质过程(550-1270K),以4-6型为主.多项证据表明,CK和CV3型陨石具有成因联系.但是,两者在岩相结构和化学组成方面仍存在微小差异.因此,精细地区分和比较两者的地球化学特征对于验证CK-CV单一母体假说非常重要.Northwest Africa(NWA)13943是一块新发现的陨石,经历过较强烈的热变质作用.利用扫描电子显微镜和电子探针,确定了NWA 13943的岩石类型.并运用质谱分析技术,重点测定了NWA 13943陨石的全岩氧同位素和铬同位素组成.综合岩石结构、矿物化学成分、氧同位素异常(△^(17)O,△代表同位素分馏值)和铬同位素异常(ε^(54)Cr,ε表示样品中的同位素比值与标样中的同位素比值的相对偏差的10^(4)倍),CK和CV型陨石的母体可能形成于原行星盘中两个相似但不同的化学源区.

关键词：天体化学陨石 CK型碳质球粒陨石

10—20d和30—60d低频振荡对华南前汛期持续性暴雨的影响差异及机制研究

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气象学报 2024年第2期82卷 137-154页

作者：臧钰歆徐邦琪高迎侠南京信息工程大学气象灾害教育部重点实验室/气象灾害预报预警与评估协同创新中心南京210044 内蒙古大学生态与环境学院呼和浩特010021

利用中国气象局发布的《区域性重要过程检测和评价业务规定》中对省级区域性暴雨过程的统计数据,NOAA气候预测中心降水、向外长波辐射(OLR)资料以及ERA-Interim再分析资料,探讨了10—20 d和30—60 d两类低频振荡对华南前汛期持续性暴雨... 详细信息

利用中国气象局发布的《区域性重要过程检测和评价业务规定》中对省级区域性暴雨过程的统计数据,NOAA气候预测中心降水、向外长波辐射(OLR)资料以及ERA-Interim再分析资料,探讨了10—20 d和30—60 d两类低频振荡对华南前汛期持续性暴雨的相对重要性,并基于尺度分离的水汽方程和垂直速度方程诊断了相关物理机制。结果表明,10—20 d准双周振荡对暴雨强度的影响较为显著,而30—60 d季节内振荡与暴雨持续时间相关较高,表明持续性暴雨事件与低频降水的发生和演变关系密切。通过对低频降水的热力和动力过程诊断,发现10—20 d低频降水的水汽来源主要为水汽平流过程,而导致水汽平流正距平的主要原因是10—20 d风场和背景水汽场的相互作用;而对于30—60 d低频降水而言,水汽平流和水汽辐合均为扰动水汽的累积做正贡献,但其中水汽平流更加重要,其主要来源于平均风场和30—60 d水汽场的相互作用。有利于两类低频降水发生的动力条件,即垂直上升运动,其主要源于平均风场和扰动涡度场相互作用引发的垂直涡度平流梯度。以上结果显示,提高模式中低频振荡与季节平均状态尺度相互作用的刻画能力,是改进预报持续性暴雨的关键。

关键词：华南前汛期低频振荡尺度相互作用持续性暴雨

Infected aortic and iliac aneurysms:Clinical manifestations in the emergency departments of two hospitals in southern Taiwan,china

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World Journal of Emergency Medicine 2017年第2期8卷 121-125页

作者： Chang-Chih Tsai chien-chin hsu Kuo-Tai Chen Emergency Department Chi-Mei Medical Center Department of Biotechnology Southern Tainan University of Technology Department of Emergency Medicine Taipei Medical University

BACKGROUND: Accurate diagnosis of infected aortic and iliac aneurysms is often delayed, hampering timely treatment and potentially resulting in a fatal consequence. The aim of this study was to discover useful clinical features that can help physicians to identify these ***: We reviewed the discharge notes from two hospitals and identifi ed all patients who had a diagnosis of infected aneurysms of the thoracoabdominal aorta and iliac arteries between July 2009 and December 2013. Eighteen patients, aged from 41 to 93, were reviewed. Only 6 patients were diagnosed accurately in their fi rst visit to our ***: Most patients had at least one underlying illness, and it took 1 to 30(9.9±6.5) days for physicians to diagnose their infected aneurysm. Localized pain and fever were the two most commonly presented symptoms. The majority(92%) of isolated microorganisms were gram-negative bacilli, including Salmonella spp, Klebsiella pneumoniae, and Escherichia coli. Two of the 3 patients who underwent non-operative therapy died, and all of the patients who underwent a combination of medical and operative therapies ***: We suggest that physicians liberally use computed tomography scans on patients with unknown causes of pain and inflammatory processes. A combination of surgical and medical treatments is indicated for all patients with infected aortic and iliac aneurysms.

关键词： Infected aneurysm Salmonella Misdiagnosis Emergency department Clinical manifestation

Long-term impact of artificial intelligence on colorectal adenoma detection in high-risk colonoscopy

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World Journal of Gastrointestinal Endoscopy 2024年第6期16卷 335-342页

作者： Kenneth W Chow Matthew T Bell Nicholas Cumpian Maryanne Amour Ryan H hsu Viktor E Eysselein Neetika Srivastava Michael W Fleischman Sofiya Reicher Department of Medicine Harbor-UCLA Medical CenterTorranceCA 90502United States Department of Bioengineering Jacobs School of EngineeringUniversity of CaliforniaSan DiegoLa JollaCA 92093United States Department of Gastroenterology Harbor-UCLA Medical CenterTorranceCA 90502United States

BACKGROUND Improved adenoma detection rate(ADR)has been demonstrated with artificial intelligence(AI)-assisted ***,data on the real-world appli-cation of AI and its effect on colorectal cancer(CRC)screening outcomes is *** To analyze the long-term impact of AI on a diverse at-risk patient population undergoing diagnostic colonoscopy for positive CRC screening tests or *** AI software(GI Genius,Medtronic)was implemented into the standard proced-ure protocol in November *** was collected on patient demographics,procedure indication,polyp size,location,and *** screening outcomes were evaluated before and at different intervals after AI introduction with one year of *** We evaluated 1008 colonoscopies(278 pre-AI,255 early post-AI,285 established post-AI,and 190 late post-AI).The ADR was 38.1%pre-AI,42.0%early post-AI(P=0.77),40.0%established post-AI(P=0.44),and 39.5%late post-AI(P=0.77).There were no significant differences in polyp detection rate(PDR,baseline 59.7%),advanced ADR(baseline 16.2%),and non-neoplastic PDR(baseline 30.0%)before and after AI *** In patients with an increased pre-test probability of having an abnormal colonoscopy,the current generation of AI did not yield enhanced CRC screening metrics over high-quality *** the potential of AI in colonoscopy is undisputed,current AI technology may not universally elevate screening metrics across all situations and patient *** studies that analyze different AI systems across various patient populations are needed to determine the most effective role of AI in optimizing CRC screening in clinical practice.

关键词： Artificial intelligence Colonoscopy Adenoma detection rate Screening Colorectal adenoma

西北太平洋热带气旋频次的延伸期动力-统计预报方法和评估

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大气科学学报 2024年第1期47卷 65-79页

作者：徐邦琪魏澎钱伊恬游立军南京信息工程大学气象灾害教育部重点实验室/气象灾害预报预警与评估协同创新中心江苏南京210044 福建省灾害天气重点实验室/中国气象局海峡灾害天气重点开放实验室福建福州350028 福建省气象信息中心福建福州350028

介绍了西北太平洋热带气旋(TC)频次的延伸期预报方法,比较了新构建的动力-统计和统计预报模型的预测技巧,并探讨了预报误差来源及改进方向。动力-统计预报模型是基于动力模式预测的热带季节内振荡(ISO)信号及ISO-TC生成的同期统计关系... 详细信息

介绍了西北太平洋热带气旋(TC)频次的延伸期预报方法,比较了新构建的动力-统计和统计预报模型的预测技巧,并探讨了预报误差来源及改进方向。动力-统计预报模型是基于动力模式预测的热带季节内振荡(ISO)信号及ISO-TC生成的同期统计关系来进行预报;统计预报模型则是基于TC生成的前兆ISO信号建模预报。预报评估结果显示,动力-统计混合预报模型的预报技巧高于统计预报模型,原因在于影响TC次季节变化的前兆信号并不稳定,且随着预报超前时间迅速消散,无法提供有效且稳定的可预报源;相反地,TC生成与同期的ISO背景场显著相关,动力模式对ISO(预报因子)有较好的预报能力,因此动力-统计相结合的预报方法为TC延伸期预报提供了有效途径。虽然目前动力-统计预报模型的预报技巧可达5~6周,但仍有进一步改进和提高的空间。通过对不同类型TC预报技巧检验和误差分析,研究认为年际和年代际背景场对ISO调控TC活动的影响不可忽略,且热带外ISO信号(如罗斯贝波破碎和西风急流强度等)对TC频次和轨迹也有显著影响,这些因子为TC延伸期预报提供了潜在可预报源。

关键词：热带气旋季节内振荡延伸期预报可预报性来源热带外信号

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以冰雪经济驱动东北全面振兴策略研究

黑龙江省社会主义学院学报 2024年第1期 5-9页

作者：陈晨许爽中共黑龙江省委党校黑龙江哈尔滨150070

冰雪经济对东北地区高质量发展具有巨大推动作用,把发展冰雪经济作为东北全面振兴的切入点,以冰雪为“引擎”不断推动冰雪经济全产业链发展,将会为东北全面振兴提供有力支撑。通过对东北地区冰雪经济高质量发展制约因素的分析,把握冰雪... 详细信息

冰雪经济对东北地区高质量发展具有巨大推动作用,把发展冰雪经济作为东北全面振兴的切入点,以冰雪为“引擎”不断推动冰雪经济全产业链发展,将会为东北全面振兴提供有力支撑。通过对东北地区冰雪经济高质量发展制约因素的分析,把握冰雪经济推动东北全面振兴面临新的重大机遇,提出以冰雪经济驱动东北全面振兴的策略。

关键词：冰雪经济东北全面振兴策略