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基于Spark的BIRCH算法并行化的设计与实现

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计算机工程与科学 2017年第1期39卷 35-41页

作者：李帅吴斌杜修明陈玉峰北京邮电大学智能通信软件与多媒体北京重点实验室北京100876 北京邮电大学计算机学院北京100876 国网山东省电力公司电力科学研究院山东济南250000

在分布式计算和内存为王的时代,Spark作为基于内存计算的分布式框架技术得到了前所未有的关注与应用。着重研究BIRCH算法在Spark上并行化的设计和实现,经过理论性能分析得到并行化过程中时间消耗较多的Spark转化操作,同时根据并行化BIRC... 详细信息

在分布式计算和内存为王的时代,Spark作为基于内存计算的分布式框架技术得到了前所未有的关注与应用。着重研究BIRCH算法在Spark上并行化的设计和实现,经过理论性能分析得到并行化过程中时间消耗较多的Spark转化操作,同时根据并行化BIRCH算法的有向无环图DAG,减少shuffle和磁盘读写频率,以期达到性能优化。最后,将并行化后的BIRCH算法分别与单机的BIRCH算法和MLlib中的K-Means聚类算法做了性能对比实验。实验结果表明,通过Spark对BIRCH算法并行化,其聚类质量没有明显的损失,并且获得了比较理想的运行时间和加速比。

关键词： Spark BIRCH并行化性能优化

Exploring the performance of large language models on hepatitis B infection-related questions:A comparative study

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World Journal of Gastroenterology 2025年第3期31卷 103-112页

作者： yu Li chen-Kai Huang Yi Hu Xiao-Dong Zhou Cong He Jia-Wei Zhong Department of Gastroenterology Jiangxi Provincial Key Laboratory of Digestive DiseasesJiangxi Clinical Research Center for GastroenterologyDigestive Disease HospitalThe First Affiliated HospitalJiangxi Medical CollegeNanchang UniversityNanchang 330006Jiangxi ProvinceChina HuanKui Academy Nanchang UniversityNanchang 330006Jiangxi ProvinceChina

BACKGROUND Patients with hepatitis B virus(HBV)infection require chronic and personalized care to improve *** language models(LLMs)can potentially provide medical information for *** To examine the performance of three LLMs,ChatGPT-3.5,ChatGPT-4.0,and Google Gemini,in answering HBV-related *** LLMs’responses to HBV-related questions were independently graded by two medical professionals using a four-point accuracy scale,and disagreements were resolved by a third *** question was run three times using three *** was assessed via the Gunning Fog index and Flesch-Kincaid grade *** Overall,all three LLM chatbots achieved high average accuracy scores for subjective questions(ChatGPT-3.5:3.50;ChatGPT-4.0:3.69;Google Gemini:3.53,out of a maximum score of 4).With respect to objective questions,ChatGPT-4.0 achieved an 80.8%accuracy rate,compared with 62.9%for ChatGPT-3.5 and 73.1%for Google *** the six domains,ChatGPT-4.0 performed better in terms of diagnosis,whereas Google Gemini demonstrated excellent clinical ***,in the readability analysis,the mean Gunning Fog index and Flesch-Kincaid grade level scores of the three LLM chatbots were significantly higher than the standard level eight,far exceeding the reading level of the normal *** Our results highlight the potential of LLMs,especially ChatGPT-4.0,for delivering responses to HBV-related *** may be an adjunctive informational tool for patients and physicians to improve ***,current LLMs should not replace personalized treatment recommendations from physicians in the management of HBV infection.

关键词： ChatGPT-3.5 ChatGPT-4.0 Google Gemini Hepatitis B infection Accuracy

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川西藏羌石砌碉房民居抗震构造更新设计研究

低温建筑技术 2017年第9期39卷 44-47页

作者：成斌肖玉高明陈玉西南科技大学土木与建筑学院四川绵阳621010

川西藏羌石砌碉房民居,历经多次地震考验并沿用至今,其营造中必定蕴含科学合理的抗震设计技术。论文通过调研民居营建中的构造设计做法,揭示了石砌碉房民居多种地域抗震构造设计技术;同时为了解决现代建筑与石砌建筑之间风貌延续的矛盾... 详细信息

川西藏羌石砌碉房民居,历经多次地震考验并沿用至今,其营造中必定蕴含科学合理的抗震设计技术。论文通过调研民居营建中的构造设计做法,揭示了石砌碉房民居多种地域抗震构造设计技术;同时为了解决现代建筑与石砌建筑之间风貌延续的矛盾,结合现代混凝土砌体抗震方法,通过创新的抗震构造设计,成功解决风貌保护与抗震设防的矛盾,从而为民居更新和民居修复提供技术支持。

关键词：藏羌民居石砌碉房抗震设防

基于经验模态分解与独立成分分析的心肺复苏伪迹自适应滤除算法

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生物医学工程学杂志 2016年第5期33卷 834-841页

作者：余明陈锋张广李良喆王春晨王丹詹宁波顾彪吴太虎军事医学科学院卫生装备研究所天津300161

心肺复苏(CPR)过程中实施的胸外按压引起的伪迹会严重降低除颤节律辨识的可靠性。本文提出了一种无需参考信号的CPR伪迹自适应滤除算法。结合经验模态分解(EMD)和独立成分分析(ICA),将真正的心电节律信号从受CPR伪迹干扰的心电信号中分... 详细信息

心肺复苏(CPR)过程中实施的胸外按压引起的伪迹会严重降低除颤节律辨识的可靠性。本文提出了一种无需参考信号的CPR伪迹自适应滤除算法。结合经验模态分解(EMD)和独立成分分析(ICA),将真正的心电节律信号从受CPR伪迹干扰的心电信号中分离出来。为评估算法的效果,构建了一个用于除颤节律辨识的反向传播神经网络。采集了1 484例受CPR伪迹干扰的猪的心电信号用于实验。实验结果表明,该算法可以在很大程度上抑制CPR伪迹的影响,从而显著提高CPR过程中除颤节律辨识的准确性。

关键词：心肺复苏经验模态分解独立成分分析反向传播神经网络

Molecular mechanism of pancreatic ductal adenocarcinoma:The heterogeneity of cancer-associated fibroblasts and key signaling pathways

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World Journal of Clinical Oncology 2025年第2期16卷 18-28页

作者： Zhong-yuan Hu Ding Ding yu Song Ya-Feng Deng cheng-ming Zhang Tao yu First School of Clinical Medicine Shaanxi University of Chinese MedicineXianyang 712000Shaanxi ProvinceChina College of Acupuncture and Massage Shaanxi University of Chinese MedicineXianyang 712000Shaanxi ProvinceChina Graduate School Guangzhou University of Chinese MedicineGuangzhou 510000Guangdong ProvinceChina Digestive Department I Shaanxi Provincial Hospital of Traditional Chinese MedicineXi’an 710000Shaanxi ProvinceChina

Pancreatic ductal adenocarcinoma stands out as an exceptionally fatal cancer owing to the complexities associated with its treatment and diagnosis,leading to a notably low five-year survival *** study offers a detailed exploration of epidemiological trends in pancreatic cancer and key molecular drivers,such as mutations in CDKN2A,KRAS,SMAD4,and TP53,along with the influence of cancer-associated fibroblasts(CAFs)on disease *** particular,we focused on the pivotal roles of signaling pathways such as the transforming growth factor-βand Wnt/β-catenin pathways in the development of pancreatic cancer and investigated their application in emerging therapeutic *** study provides new scientific perspectives on pancreatic cancer treatment,especially in the development of precision medicine and targeted therapeutic strategies,and demonstrates the importance of signaling pathway research in the development of effective therapeutic *** studies should explore the subtypes of CAFs and their specific roles in the tumor microenvironment to devise more effective therapeutic methods.

关键词： Pancreatic cancer Fibroblasts Signaling pathways Tumor microenvironment

Multilevel analysis of the central-peripheral-target organ pathway:contributing to recovery after peripheral nerve injury

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Neural Regeneration Research 2025年第10期20卷 2807-2822页

作者： Xizi Song Ruixin Li Xiaolei Chu Qi Li Ruihua Li Qingwen Li Kai-yu Tong Xiaosong Gu Dong ming Academy of Medical Engineering and Translational Medicine Tianjin UniversityTianjinChina Haihe Laboratory of Brain-Machine Interface and Human-Machine Fusion TianjinChina Department of Rehabilitation Tianjin University Tianjin HospitalTianjinChina Department of Hand Microsurgery Tianjin University Tianjin HospitalTianjinChina School of Exercise and Health Tianjin University of SportTianjinChina Department of Biomedical Engineering the Chinese University of Hong KongHong Kong Special Administrative RegionChina

Peripheral nerve injury is a common neurological condition that often leads to severe functional limitations and *** on the pathogenesis of peripheral nerve injury has focused on pathological changes at individual injury sites,neglecting multilevel pathological analysis of the overall nervous system and target *** has led to restrictions on current therapeutic *** this paper,we first summarize the potential mechanisms of peripheral nerve injury from a holistic perspective,covering the central nervous system,peripheral nervous system,and target *** peripheral nerve injury,the cortical plasticity of the brain is altered due to damage to and regeneration of peripheral nerves;changes such as neuronal apoptosis and axonal demyelination occur in the spinal *** nerve will undergo axonal regeneration,activation of Schwann cells,inflammatory response,and vascular system regeneration at the injury *** damage to target organs can occur,including skeletal muscle atrophy and sensory receptor *** then provide a brief review of the research advances in therapeutic approaches to peripheral nerve *** main current treatments are conducted passively and include physical factor rehabilitation,pharmacological treatments,cell-based therapies,and physical ***,most treatments only partially address the problem and cannot complete the systematic recovery of the entire central nervous system-peripheral nervous system-target organ ***,we should further explore multilevel treatment options that produce effective,long-lasting results,perhaps requiring a combination of passive(traditional)and active(novel)treatment methods to stimulate rehabilitation at the central-peripheral-target organ levels to achieve better functional recovery.

关键词： central nervous system central peripheral target organ multilevel pathological analysis nerve regeneration peripheral nerve injury peripheral nervous system target organs therapeutic approach

Cortico-striatal gamma oscillations are modulated by dopamine D3 receptors in dyskinetic rats

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Neural Regeneration Research 2025年第4期20卷 1164-1177页

作者： Pengfei Wang yuewei Bi Min Li Jiazhi chen Zhuyong Wang Huantao Wen ming Zhou Minjie Luo Wangming Zhang Neurosurgery Center Department of Pediatric NeurosurgeryGuangdong Provincial Key Laboratory on Brain Function Repair and RegenerationZhujiang HospitalSouthern Medical UniversityGuangzhouGuangdong ProvinceChina

Long-term levodopa administration can lead to the development of levodopa-induced *** oscillations are a widely recognized hallmark of abnormal neural electrical activity in levodopa-induced ***,studies have reported increased oscillation power in cases of levodopa-induced ***,little is known about how the other electrophysiological parameters of gamma oscillations are altered in levodopa-induced ***,the role of the dopamine D3 receptor,which is implicated in levodopa-induced dyskinesia,in movement disorder-related changes in neural oscillations is *** found that the cortico-striatal functional connectivity of beta oscillations was enhanced in a model of Parkinson’s ***,levodopa application enhanced cortical gamma oscillations in cortico-striatal projections and cortical gamma aperiodic components,as well as bidirectional primary motor cortex(M1)↔dorsolateral striatum gamma *** of PD128907(a selective dopamine D3 receptor agonist)induced dyskinesia and excessive gamma oscillations with a bidirectional M1↔dorsolateral striatum ***,administration of PG01037(a selective dopamine D3 receptor antagonist)attenuated dyskinesia,suppressed gamma oscillations and cortical gamma aperiodic components,and decreased gamma causality in the M1→dorsolateral striatum *** findings suggest that the dopamine D3 receptor plays a role in dyskinesia-related oscillatory activity,and that it has potential as a therapeutic target for levodopa-induced dyskinesia.

关键词： aperiodic components dopamine D3 receptor dorsolateral striatum functional connectivity gamma oscillations levodopa-induced-dyskinesia local field potentials neuromodulation Parkinson’s disease primary motor cortex

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公平关切下闭环供应链的三种模型决策研究

商学研究 2017年第5期24卷 68-74页

作者：戴道明陈玉玲安徽财经大学管理科学与工程学院安徽蚌埠233030 安徽财经大学物流与供应链管理研究中心安徽蚌埠233030

将公平关切引入制造商为主且制造商负责回收的闭环供应链中,研究了制造商知道零售商公平关切、制造商不知道零售商公平关切以及制造商公平关切三种模式的决策行为,并对三种模式下的均衡结果进行了比较分析。研究发现:供应链成员双方之间... 详细信息

将公平关切引入制造商为主且制造商负责回收的闭环供应链中,研究了制造商知道零售商公平关切、制造商不知道零售商公平关切以及制造商公平关切三种模式的决策行为,并对三种模式下的均衡结果进行了比较分析。研究发现:供应链成员双方之间,公平关切的一方利润变化不定,而公平中性的一方利润一定减少;系统回收率随着公平关切程度的增加而减小,决策者的公平偏好不利于社会环境的发展;信息不对称会使制造商失去市场主导地位的优势,陷入被动。

关键词：公平关切闭环供应链 Stackelberg博弈

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稀土化合物在纺织加工领域的应用

苏州大学学报（工科版） 2003年第5期23卷 12-15页

作者：查明陈宇岳林红苏州大学材料工程学院江苏苏州215021

本文综合介绍了稀土元素在纺织工业领域的应用,并分析了稀土化合物染色及对纤维材料的作用机理。

关键词：稀土元素纺织加工稀土化合物染色应用作用机理