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用Java的Guarded Suspension模式解决哲学家进餐问题
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作者 曹建立 周震 《洛阳师范学院学报》 2006年第2期91-93,共3页
“哲学家进餐问题”是一个典型的同步问题.本文简要介绍了Java语言的多线程技术和Guarded Suspension模式,利用该技术解决了这个问题,并给出了完整的实现代码.
关键词 JAVA 多线程 guarded Suspension模式 同步 临界资源 死锁
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Discover the real Transylvania on a new long‑distance hiking trail
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作者 廖宝翔 《疯狂英语(新悦读)》 2025年第3期19-24,75,76,共8页
1 Exploring Transylvania,with its promises of ancient buildings,wall‑guarded churches and fantastic castles,is a genuine treat for nature lovers,but since October 2022,a new social project,Via Transilvanica,aims to in... 1 Exploring Transylvania,with its promises of ancient buildings,wall‑guarded churches and fantastic castles,is a genuine treat for nature lovers,but since October 2022,a new social project,Via Transilvanica,aims to invite active travelers to explore the essence of Romanian culture. 展开更多
关键词 ancient buildings nature lovers social project Via Transilvanica castles long distance hiking wall guarded churches Transylvania
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Grape Guard:A YOLO-based mobile application for detecting grape leaf diseases 被引量:1
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作者 Sajib Bin Mamun Israt Jahan Payel +3 位作者 Md.Taimur Ahad Anthony S.Atkins Bo Song Yan Li 《Journal of Electronic Science and Technology》 2025年第1期60-75,共16页
Grape crops are a great source of income for farmers.The yield and quality of grapes can be improved by preventing and treating diseases.The farmer’s yield will be dramatically impacted if diseases are found on grape... Grape crops are a great source of income for farmers.The yield and quality of grapes can be improved by preventing and treating diseases.The farmer’s yield will be dramatically impacted if diseases are found on grape leaves.Automatic detection can reduce the chances of leaf diseases affecting other healthy plants.Several studies have been conducted to detect grape leaf diseases,but most fail to engage with end users and integrate the model with real-time mobile applications.This study developed a mobile-based grape leaf disease detection(GLDD)application to identify infected leaves,Grape Guard,based on a TensorFlow Lite(TFLite)model generated from the You Only Look Once(YOLO)v8 model.A public grape leaf disease dataset containing four classes was used to train the model.The results of this study were relied on the YOLO architecture,specifically YOLOv5 and YOLOv8.After extensive experiments with different image sizes,YOLOv8 performed better than YOLOv5.YOLOv8 achieved 99.9%precision,100%recall,99.5%mean average precision(mAP),and 88%mAP50-95 for all classes to detect grape leaf diseases.The Grape Guard android mobile application can accurately detect the grape leaf disease by capturing images from grape vines. 展开更多
关键词 Bacterial diseases Grape Guard Mobile-based application YOLOv5 YOLOv8
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Guardians of the Singing Sands China’s commitment to protecting Badain Jaran Desert as a UNESCO heritage site
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作者 Liu Hongzhang Wang Xiaochun 《China Report ASEAN》 2025年第1期56-57,共2页
When American journalist Donovan Webster explored the Badain Jaran Desert,the fourth largest desert in the world lying in Inner Mongolia Autonomous Region in northern China,he was struck by its history dating back to ... When American journalist Donovan Webster explored the Badain Jaran Desert,the fourth largest desert in the world lying in Inner Mongolia Autonomous Region in northern China,he was struck by its history dating back to the 14th century.He was also impressed by the hospitality of the locals wherever he went,offering him accommodation,food,and travel tips.He and many other explorers and geologists would be happy that the unique desert of sand towers and lakes has been recognized as a UNESCO World Heritage Site,the first such honor for a Chinese desert.With this inclusion,China now boasts 15 World Natural Heritage sites and four heritage sites noted for both cultural and natural features. 展开更多
关键词 DESERT UNESCO GUARD
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Guardians of the“Snow Mountain Genie”
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作者 LIU YIXUAN 《China Today》 2025年第4期68-69,共2页
An endangered species,the black-andwhite snub-nosed monkey of south China has today become a story of conservation success.LI Fuhui has a deep emotional connection with the“Snow Mountain genie,”a moniker of the snub... An endangered species,the black-andwhite snub-nosed monkey of south China has today become a story of conservation success.LI Fuhui has a deep emotional connection with the“Snow Mountain genie,”a moniker of the snubnosed monkey,a rare and endangered primate unique to China.His lens has captured countless extraordinary moments of the species,also known as the Yunnan golden hair monkey,in their daily lives in the Baima Snow Mountain National Nature Reserve in Yunnan Province in the southwest. 展开更多
关键词 GUARD SOUTHWEST TODAY
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Tashi Norbu,a Wildlife Guardian in Xizang:"WE ARE ALL NORBU YUGYEL"
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作者 Xu Yuyao Chungtak Drolkar +1 位作者 Xu Yuyao(Photos) Li Xiaosu(Translated) 《China's Tibet》 2025年第1期42-45,共4页
The immense grassland unfolded in front of our eyes,with no sign of human habitation for hundreds of miles.This is where Tashi Norbu,a wildlife guardian at the Norbu Yugyel Management and Protection Station,came for h... The immense grassland unfolded in front of our eyes,with no sign of human habitation for hundreds of miles.This is where Tashi Norbu,a wildlife guardian at the Norbu Yugyel Management and Protection Station,came for his everyday work-the no man’s land of Changtang Grassland in Nyima County of Nagqu City. 展开更多
关键词 GRASSLAND GUARD EVERYDAY
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Guards of Blue Erhai Lake
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作者 LIU YIXUAN 《China Today》 2025年第3期66-69,共4页
With the persevering efforts of a group of dedicated guardians,Erhai Lake in Yunnan is brimming with renewed vitality,enticing visitors with stunning scenery.
关键词 GUARD LAKE GUARD
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一种皮安级微电流检测系统的设计
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作者 谭小林 苏鑫 +2 位作者 吴仕坤 李杰 梁文彬 《电子工业专用设备》 2025年第5期42-45,72,共5页
针对带电粒子流、光电二极管和光电倍增管探测微弱电流检测,采用超低偏置电流运放做前级I-V转换,然后经过超低偏置电压运放进行二级放大调理,辅以Guarding环保护与屏蔽电缆归环技术,再配合后端的超高分辨率ADC器件,设计了一种在较大的... 针对带电粒子流、光电二极管和光电倍增管探测微弱电流检测,采用超低偏置电流运放做前级I-V转换,然后经过超低偏置电压运放进行二级放大调理,辅以Guarding环保护与屏蔽电缆归环技术,再配合后端的超高分辨率ADC器件,设计了一种在较大的测量范围内具有良好性能的pA级弱电流检测系统及测试方法。通过试验,对电路的性能进行了测试,实验测试表明:当输入微弱电流值大于10 pA时,该电路最大误差为2%。该电路可满足带电粒子流、光电二极管和光电倍增管等微弱电流检测的需求。 展开更多
关键词 微电路检测 Guarding环 测量技术 T型网络 静电屏蔽 I-V转换电路
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高氡浓度地震监测泉在标准仪器校准方法中的应用研究
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作者 李娜 祖丽皮牙·艾尼瓦尔 +2 位作者 李新勇 任宏微 黄建明 《内陆地震》 2024年第3期250-257,共8页
基于水氡浓度为20000~100000 Bq·m^(-3)的新09泉、新10泉和新15泉,利用国际刻度参考装置Alpha GUARD测氡仪及其水氡测量组件,开展标准仪器传递校准实验研究,校准K值相对误差分别为3.60%、-0.81%及2.09%。实验结果与氡气固体源校准... 基于水氡浓度为20000~100000 Bq·m^(-3)的新09泉、新10泉和新15泉,利用国际刻度参考装置Alpha GUARD测氡仪及其水氡测量组件,开展标准仪器传递校准实验研究,校准K值相对误差分别为3.60%、-0.81%及2.09%。实验结果与氡气固体源校准结果对比表明,水氡浓度在20000 Bq·m^(-3)以上水样可以通过标准仪器校准新方法检验,且利用不同水氡浓度的泉水不会影响校准结果准确性。新疆地球物理观测中心可利用高氡浓度的日常监测泉,将Alpha GUARD测氡仪作为标准仪器对FD-125型氡钍分析仪进行校准,从而替代固体氡源校准。本研究为地震监测氡观测的校准新方法操作技术规程及推广试用提供了数据支撑。 展开更多
关键词 地震监测 水氡 K值 标定方法 Alpha GUARD测氡仪
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uBlock算法的低延迟一阶门限实现方法
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作者 姚富 陈华 范丽敏 《电子学报》 EI CAS CSCD 北大核心 2024年第4期1250-1259,共10页
目前已有文献给出了uBlock分组密码算法的侧信道防护方案,但是这些方案不仅延迟较高,难以适用于低延迟高吞吐场景,而且在毛刺探测模型下缺乏可证明安全性.针对这一问题,本文给出了在毛刺探测模型下具有可证明安全性的uBlock算法的低延... 目前已有文献给出了uBlock分组密码算法的侧信道防护方案,但是这些方案不仅延迟较高,难以适用于低延迟高吞吐场景,而且在毛刺探测模型下缺乏可证明安全性.针对这一问题,本文给出了在毛刺探测模型下具有可证明安全性的uBlock算法的低延迟门限实现方案.此外,我们引入了Changing of the Guards技术来避免防护方案在执行过程中需要额外随机数.对于防护方案的安全性,我们用自动化评估工具SILVER验证了S盒的毛刺探测安全性,并用泄露评估技术TVLA(Test Vector Leakage Assessment)验证了防护方案的整个电路的安全性.最后,我们用Design Compiler工具对防护方案的性能消耗情况进行了评估.评估结果显示,与序列化实现方式的uBlock防护方案相比,我们的防护方案的延迟能够减少约95%. 展开更多
关键词 密码芯片 uBlock算法 侧信道攻击与防护 掩码技术 门限实现 Changing of the Guards
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Call for Papers:Digital Intelligence Guarding:Special Issue on Intelligent Inspection and Digital Twin for Infrastructure
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《Wuhan University Journal of Natural Sciences》 CAS CSCD 2024年第5期F0003-F0003,共1页
Currently,how to organically combine intelligent inspection and monitoring technologies,unmanned robotic operation technologies,IoT technologies,AI and digital twin technologies to construct a comprehensive and effici... Currently,how to organically combine intelligent inspection and monitoring technologies,unmanned robotic operation technologies,IoT technologies,AI and digital twin technologies to construct a comprehensive and efficient intelligent management and maintenance system for infrastructure has become a hot issue of common concern in the academic and industrial fields.It is also an inevitable requirement for promoting the development of certain fields like smart urban and rural areas,safe cities,smart road networks,and intelligent transportation. 展开更多
关键词 IoT SMART GUARD
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“Moisture Guardian”加湿器设计
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作者 颜沁 魏国 《包装工程》 CAS 北大核心 2024年第8期I0013-I0013,共1页
设计说明:加湿器“Moisture Guardian”采用智能化控制系统,用户可以通过手机应用远程控制加湿器,随时随地调整湿度和风速,根据个人喜好创建定制化的舒适环境,同时,加湿器内置传感器能够实时监测环境湿度,自动调节工作模式,确保室内空... 设计说明:加湿器“Moisture Guardian”采用智能化控制系统,用户可以通过手机应用远程控制加湿器,随时随地调整湿度和风速,根据个人喜好创建定制化的舒适环境,同时,加湿器内置传感器能够实时监测环境湿度,自动调节工作模式,确保室内空气始终清新湿润。 展开更多
关键词 加湿器 智能化控制系统 手机应用 设计说明 内置传感器 GUARD 远程控制 环境湿度
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Call for Papers:Digital Intelligence Guarding:Special Issue on Intelligent Inspection and Digital Twin for Infrastructure
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《Wuhan University Journal of Natural Sciences》 CSCD 2024年第6期F0003-F0003,共1页
Currently,how to organically combine intelligent inspection and monitoring technologies,unmanned robotic operation technologies,IoT technologies,AI and digital twin technologies to construct a comprehensive and effici... Currently,how to organically combine intelligent inspection and monitoring technologies,unmanned robotic operation technologies,IoT technologies,AI and digital twin technologies to construct a comprehensive and efficient intelligent management and maintenance system for infrastructure has become a hot issue of common concern in the academic and industrial fields.It is also an inevitable requirement for promoting the development of certain fields like smart urban and rural areas,safe cities,smart road networks,and intelligent transportation. 展开更多
关键词 IoT SMART GUARD
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Principle for the Installation of Accommodation for Sick guards in Public Health Establishments in Brazzaville in the Republic of Congo
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作者 Alain Symphorien Ndongo Destin Gemetone Etou Christian Tathy 《Journal of Environmental Science and Engineering(B)》 CAS 2024年第2期70-79,共10页
The results of scientific studies of human social facts in the field of health show that the management of a patient should involve the patient’s entourage,whatever the status or size of the health establishment.In h... The results of scientific studies of human social facts in the field of health show that the management of a patient should involve the patient’s entourage,whatever the status or size of the health establishment.In healthcare establishments in the Congo,the following are recognised as being responsible for medical care:specialist doctors,doctors,midwives,nurses and care assistants.The patient’s family and close friends are responsible for looking after the patient and financing care.The hospital infrastructure does not provide any space for the patient warden who accompany the patient during reception and hospitalisation.This makes Congolese hospitals inefficient for patient care.How can we integrate the function of the Sick guard and the assistance of the family,in order to reduce the mortality rate and repair the harm caused to patients requiring the presence of relatives during their stay in hospital,which is considered to be a dangerous place?This article examines the functional principles for configuring the space that patient warden would occupy in the patient care system.On the basis of a documentary analysis of sociological and architectural studies of existing facilities,this article proposes a typical accommodation model with the spaces needed to ensure the well-being and effectiveness of the patient warden with the patient.These are rooms with minimum space for 2 to 4 individual beds,equipped with toilets and showers.The accommodation has a dining area,kitchen and laundry facilities.In the future,this accommodation will become part of the hospital estate and may be occupied by orderlies and patient warden recruited by the hospital administration. 展开更多
关键词 Sick guard patient public health establishment ACCOMMODATION Republic of Congo
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基于GCL语言的测试用例生成方法 被引量:1
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作者 丁佐华 JeffSanders +2 位作者 江明月 张娜 蒲戈光 《计算机学报》 EI CSCD 北大核心 2014年第12期2492-2504,共13页
提出一种基于GCL语言生成程序测试用例的形式化方法.程序的语义为测试用例的生成提供了基本框架,而由Hoare等人提供的规则保证了用例的正确性.作者的这种方法可被认为是一种严格的,自动生成测试用例的方法.这种方法的优点在于:所获得的... 提出一种基于GCL语言生成程序测试用例的形式化方法.程序的语义为测试用例的生成提供了基本框架,而由Hoare等人提供的规则保证了用例的正确性.作者的这种方法可被认为是一种严格的,自动生成测试用例的方法.这种方法的优点在于:所获得的测试用例都是可行的,在测试用例生成过程中可以避免状态爆炸问题,而且该方法可以延拓到任何目标语言.据此开发了一个基于Haskell语言的原型工具来支持作者的方法. 展开更多
关键词 测试用例 guarded—Command—Language 执行树 条件计算 软件测试
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A Train Adventure of Wild Animals
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作者 Ajay Jaiman 笪景行(译) 《中学生英语》 2024年第22期10-16,共7页
An empty goods train was speedingthrough a jungle. Up front, in the engire,was the driver and at the back, in the lastcompartment, was the guard, Apart fromthem, the entire train was empty.A goods train carries goods ... An empty goods train was speedingthrough a jungle. Up front, in the engire,was the driver and at the back, in the lastcompartment, was the guard, Apart fromthem, the entire train was empty.A goods train carries goods like logs ofwood, or boxes of chocolate and even carsand jeeps. But this train had been carryingcoal, After unloading all the coal, the emptytrain was going back to get more coal. 展开更多
关键词 GUARD ANIMALS GET
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Guardians of the Source Region of the Yangtze River
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作者 Xu Yuyao(Text/Photos) Wu Yuren(Text/Photos) 《China's Tibet》 2024年第5期40-45,共6页
In the early morning,Rinchen Gyatso in Maqu Township,Amdo County,Nagqu City,Xizang Autonomous Region,set off and embarked on another day's patrolling.As the head of the volunteer team to patrol the source of the Y... In the early morning,Rinchen Gyatso in Maqu Township,Amdo County,Nagqu City,Xizang Autonomous Region,set off and embarked on another day's patrolling.As the head of the volunteer team to patrol the source of the Yangtze River in Maqu,protecting the precious glacier and many wastelands along the route is the most important job for him. 展开更多
关键词 YANGTZE GLACIER GUARD
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Between Science and Conscience
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作者 GE LIJUN 《ChinAfrica》 2024年第7期46-47,共2页
Guardians of the industrial galaxy:the transformative impact of humanoid robots Humanoid robots have become a familiar sight,particularly in science fiction films where they are often depicted as omnipotent beings.The... Guardians of the industrial galaxy:the transformative impact of humanoid robots Humanoid robots have become a familiar sight,particularly in science fiction films where they are often depicted as omnipotent beings.They are capable of caring for our families in real time,offering emotional companionship and even protecting Earth on our behalf. 展开更多
关键词 GUARD behalf GALAXY
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红外背景抑制与小目标检测算法 被引量:12
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作者 张世锋 黄心汉 王敏 《中国图象图形学报》 CSCD 北大核心 2016年第8期1039-1047,共9页
目的针对Robinson guard滤波器的局限性和红外图像背景抑制问题,提出一种新的红外背景抑制滤波算法。方法首先通过形态学Tophat算子对图像背景进行抑制,然后对背景抑制后的图像采用改进的Robinson guard滤波器进一步凸显目标,并通过阈... 目的针对Robinson guard滤波器的局限性和红外图像背景抑制问题,提出一种新的红外背景抑制滤波算法。方法首先通过形态学Tophat算子对图像背景进行抑制,然后对背景抑制后的图像采用改进的Robinson guard滤波器进一步凸显目标,并通过阈值化分割出感兴趣区域,在此基础上,利用Unger平滑去除小的噪声点,最后用局部信杂比(SCR)和移动式管道滤波剔除伪目标,实现运动小目标的准确定位。结果采用3组不同的红外背景图像序列进行实验,所提算法对不同背景均有很好的抑制效果,与传统Robinson guard滤波方法相比,本文算法不仅能更有效地保留目标的特征信息,而且对3组图像序列的小目标的检测率分别提高了1.1%、2%、11%,虚警率分别降低了14%、12%、16%。结论本文算法能有效地检测出小目标,具备较高的准确性,对于低信噪比的图像具有良好的适应性。同时,本文算法具有较高的实时处理能力,有利于实现实时性技术应用。 展开更多
关键词 红外目标检测 背景抑制 ROBINSON guard滤波 Unger平滑 管道滤波
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基于移动式加权管道滤波的红外弱小目标检测 被引量:23
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作者 刘靳 姬红兵 《西安电子科技大学学报》 EI CAS CSCD 北大核心 2007年第5期743-747,共5页
针对复杂红外背景中边缘噪声的干扰导致传统检测算法在低信噪比下目标检测概率较低的情况,提出了基于移动式加权管道滤波的弱小目标检测方法.该检测方法引入了自适应学习的思想,在利用管道滤波检测目标时,根据目标位置实时地修改加权的... 针对复杂红外背景中边缘噪声的干扰导致传统检测算法在低信噪比下目标检测概率较低的情况,提出了基于移动式加权管道滤波的弱小目标检测方法.该检测方法引入了自适应学习的思想,在利用管道滤波检测目标时,根据目标位置实时地修改加权的管道中心坐标位移,有效地抑制了边缘噪声对目标检测的干扰.与传统的管道检测方法相比,本方法能更好地抑制边缘噪声的影响,从而正确检测出真实目标.基于连续采集的红外序列图像进行的实验表明,当红外图像的信噪比大于等于1.5时,该方法均能有效地检测出弱小目标的轨迹. 展开更多
关键词 ROBINSON Guard滤波 红外图像序列 小目标检测 管道滤波
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