More than 3 million people of Pakistan have been displaced and dislocated from Swat,Dir and Buner due to the violent activities of militants.Although,Pakistan has taken measures to assist these IDPs,they still need mo...More than 3 million people of Pakistan have been displaced and dislocated from Swat,Dir and Buner due to the violent activities of militants.Although,Pakistan has taken measures to assist these IDPs,they still need more help,especially cash donation.To help展开更多
艺术设计研究领域正在经历着一场深刻的变革。原型——这个曾经只是验证功能的简单工具,如今正演变为融合认知建构、文化表达与知识生成的复杂中介。文章系统梳理了交互式数字原型(Interactive Digital Prototype,IDP)的理论基础与实验...艺术设计研究领域正在经历着一场深刻的变革。原型——这个曾经只是验证功能的简单工具,如今正演变为融合认知建构、文化表达与知识生成的复杂中介。文章系统梳理了交互式数字原型(Interactive Digital Prototype,IDP)的理论基础与实验设计方法,指出当前原型研究正经历从“创作测量”向“知识生产”范式的转变。通过比较Odom、Camburn、Dow等学者提出的原型类型划分、认知机制及快速迭代模型,总结了IDP在数字人文语境中的研究功能与评价路径,并结合中国本土教育、展陈及文化实践案例,提出一套系统的实验方法比较框架。研究表明,IDP具备多模态集成、动态反馈与参与式构建的特征,展现出推动跨学科知识生成的潜力。未来研究应聚焦多源数据整合、情境建模与文化编码机制,推动原型从单一表达工具向认知研究平台转变,在新文科建设背景下拓展设计学与社会科学的交叉创新路径。展开更多
Complex multi-area collaborative coverage path planning in dynamic environments poses a significant challenge for multi-fixed-wing UAVs(multi-UAV).This study establishes a comprehensive framework that incorporates UAV...Complex multi-area collaborative coverage path planning in dynamic environments poses a significant challenge for multi-fixed-wing UAVs(multi-UAV).This study establishes a comprehensive framework that incorporates UAV capabilities,terrain,complex areas,and mission dynamics.A novel dynamic collaborative path planning algorithm is introduced,designed to ensure complete coverage of designated areas.This algorithm meticulously optimizes the operation,entry,and transition paths for each UAV,while also establishing evaluation metrics to refine coverage sequences for each area.Additionally,a three-dimensional path is computed utilizing an altitude descent method,effectively integrating twodimensional coverage paths with altitude constraints.The efficacy of the proposed approach is validated through digital simulations and mixed-reality semi-physical experiments across a variety of dynamic scenarios,including both single-area and multi-area coverage by multi-UAV.Results show that the coverage paths generated by this method significantly reduce both computation time and path length,providing a reliable solution for dynamic multi-UAV mission planning in semi-physical environments.展开更多
Cloud computing is a transformational paradigm involving the delivery of applications and services over the Internet,using access mechanisms through microprocessors,smartphones,etc.Latency time to prevent and detect m...Cloud computing is a transformational paradigm involving the delivery of applications and services over the Internet,using access mechanisms through microprocessors,smartphones,etc.Latency time to prevent and detect modern and complex threats remains one of the major challenges.It is then necessary to think about an intrusion prevention system(IPS)design,making it possible to effectively meet the requirements of a cloud computing environment.From this analysis,the central question of the present study is to minimize the latency time for efficient threat prevention and detection in the cloud.To design this IPS design in a cloud computing environment,Azure environment(Microsoft)and its concept of Virtual Private Cloud(VPC)were used.Then,an IPS design was deployed with a ruleset from a mined dataset(via K-means clustering)and processed.Finally,the correlation between the traffic analyzed(virtual network traffic in real-time,logs)and the filtering rules or ruleset of this IPS made it possible to obtain and discuss on a precision rate of around 0.9 in True Positive Rate(TPR)in the prevention Cross-Site Scripting(XSS)attacks targeting the cloud,for a latent time of approximately 6.4 ms.Subsequently,it is important to think about extending the detection capabilities,attack complexity,and high traffic consideration of this IPS.展开更多
实现企业级信息共享和业务集成的前提是建设企业级综合数据平台(integrated data platform,IDP)。文章基于IEC61970/61968CIM/CIS标准,提出了电网公司企业级IDP的总体构架。该IDP包括数据适配器、公共信息模型(common information model...实现企业级信息共享和业务集成的前提是建设企业级综合数据平台(integrated data platform,IDP)。文章基于IEC61970/61968CIM/CIS标准,提出了电网公司企业级IDP的总体构架。该IDP包括数据适配器、公共信息模型(common information model,CIM)及其扩展模型、标准数据服务和管理监控4大模块。以营销应用和设备管理为例,阐述了通过模型类的新建、简化和关联来扩展CIM的设计方法。分析了利用统一集成总线(unified integrative bus,UIB)开发符合组件接口规范(component interface specification,CIS)的数据接口服务的关键点以及基于IDP的典型应用。展开更多
Noble gas isotopic compositions of various layers in three-layered （outer, porous and compact layers） cobalt-rich ferromanganese crusts and their basaltic and phosphorite substrates from the western Pacific Ocean we...Noble gas isotopic compositions of various layers in three-layered （outer, porous and compact layers） cobalt-rich ferromanganese crusts and their basaltic and phosphorite substrates from the western Pacific Ocean were analyzed by using a high vacuum gas mass spectrum. The analytical results show that the noble gases in the Co-rich crusts have derived mainly from the ambient seawater, extraterrestrial grains such as interplanetary dust particles （IDPs） and wind-borne continental dust grains, and locally formation water in the submarine sediments, but different noble gases have different sources. He in the crusts derives predominantly from the extraterrestrial grains, with a negligible amount of radiogenic He from the eolian dust grains. Ar is sourced mainly from the dissolved air in the seawater and insignificantly from radiogenic Ar in the eolian continental dust grains or the formation water. Xe and Ne derive mainly from the seawater, with minor amounts of extraterrestrial Xe and Ne in the IDPs. Compared with the porous and outer layers, the compact layer has a relatively high 4He content and lower 3He/4He ratios, suggesting that marine phosphatization might have greatly modified the noble gas isotopic compositions of the crusts. Besides, the 3He/4He values of the basaltic substrates of the cobalt-rich crusts are very low and their R/R. ratios are mostly 〈0.1 R., which are similar to that of phosphorite substrates （0.087 R.）, but much lower than that of fresh submarine MORB （8.75±14 Ra） or seamount basalts （3-43 Ra）, implying that the basaltic substrates have suffered strong water/rock interaction and reacted with radiogenic ^4He and P-rich upwelling marine currents during phosphatization. The trace elements released in the basalt/seawater interaction might favor the growth of cobalt-rich crusts. The relatively low ^3He/^4He values in the seamount basalts may be used as an important exploration criterion for the cobalt-rich ferromanganese crusts.展开更多
文摘More than 3 million people of Pakistan have been displaced and dislocated from Swat,Dir and Buner due to the violent activities of militants.Although,Pakistan has taken measures to assist these IDPs,they still need more help,especially cash donation.To help
文摘艺术设计研究领域正在经历着一场深刻的变革。原型——这个曾经只是验证功能的简单工具,如今正演变为融合认知建构、文化表达与知识生成的复杂中介。文章系统梳理了交互式数字原型(Interactive Digital Prototype,IDP)的理论基础与实验设计方法,指出当前原型研究正经历从“创作测量”向“知识生产”范式的转变。通过比较Odom、Camburn、Dow等学者提出的原型类型划分、认知机制及快速迭代模型,总结了IDP在数字人文语境中的研究功能与评价路径,并结合中国本土教育、展陈及文化实践案例,提出一套系统的实验方法比较框架。研究表明,IDP具备多模态集成、动态反馈与参与式构建的特征,展现出推动跨学科知识生成的潜力。未来研究应聚焦多源数据整合、情境建模与文化编码机制,推动原型从单一表达工具向认知研究平台转变,在新文科建设背景下拓展设计学与社会科学的交叉创新路径。
基金National Natural Science Foundation of China(Grant No.52472417)to provide fund for conducting experiments.
文摘Complex multi-area collaborative coverage path planning in dynamic environments poses a significant challenge for multi-fixed-wing UAVs(multi-UAV).This study establishes a comprehensive framework that incorporates UAV capabilities,terrain,complex areas,and mission dynamics.A novel dynamic collaborative path planning algorithm is introduced,designed to ensure complete coverage of designated areas.This algorithm meticulously optimizes the operation,entry,and transition paths for each UAV,while also establishing evaluation metrics to refine coverage sequences for each area.Additionally,a three-dimensional path is computed utilizing an altitude descent method,effectively integrating twodimensional coverage paths with altitude constraints.The efficacy of the proposed approach is validated through digital simulations and mixed-reality semi-physical experiments across a variety of dynamic scenarios,including both single-area and multi-area coverage by multi-UAV.Results show that the coverage paths generated by this method significantly reduce both computation time and path length,providing a reliable solution for dynamic multi-UAV mission planning in semi-physical environments.
文摘Cloud computing is a transformational paradigm involving the delivery of applications and services over the Internet,using access mechanisms through microprocessors,smartphones,etc.Latency time to prevent and detect modern and complex threats remains one of the major challenges.It is then necessary to think about an intrusion prevention system(IPS)design,making it possible to effectively meet the requirements of a cloud computing environment.From this analysis,the central question of the present study is to minimize the latency time for efficient threat prevention and detection in the cloud.To design this IPS design in a cloud computing environment,Azure environment(Microsoft)and its concept of Virtual Private Cloud(VPC)were used.Then,an IPS design was deployed with a ruleset from a mined dataset(via K-means clustering)and processed.Finally,the correlation between the traffic analyzed(virtual network traffic in real-time,logs)and the filtering rules or ruleset of this IPS made it possible to obtain and discuss on a precision rate of around 0.9 in True Positive Rate(TPR)in the prevention Cross-Site Scripting(XSS)attacks targeting the cloud,for a latent time of approximately 6.4 ms.Subsequently,it is important to think about extending the detection capabilities,attack complexity,and high traffic consideration of this IPS.
文摘实现企业级信息共享和业务集成的前提是建设企业级综合数据平台(integrated data platform,IDP)。文章基于IEC61970/61968CIM/CIS标准,提出了电网公司企业级IDP的总体构架。该IDP包括数据适配器、公共信息模型(common information model,CIM)及其扩展模型、标准数据服务和管理监控4大模块。以营销应用和设备管理为例,阐述了通过模型类的新建、简化和关联来扩展CIM的设计方法。分析了利用统一集成总线(unified integrative bus,UIB)开发符合组件接口规范(component interface specification,CIS)的数据接口服务的关键点以及基于IDP的典型应用。
文摘Noble gas isotopic compositions of various layers in three-layered （outer, porous and compact layers） cobalt-rich ferromanganese crusts and their basaltic and phosphorite substrates from the western Pacific Ocean were analyzed by using a high vacuum gas mass spectrum. The analytical results show that the noble gases in the Co-rich crusts have derived mainly from the ambient seawater, extraterrestrial grains such as interplanetary dust particles （IDPs） and wind-borne continental dust grains, and locally formation water in the submarine sediments, but different noble gases have different sources. He in the crusts derives predominantly from the extraterrestrial grains, with a negligible amount of radiogenic He from the eolian dust grains. Ar is sourced mainly from the dissolved air in the seawater and insignificantly from radiogenic Ar in the eolian continental dust grains or the formation water. Xe and Ne derive mainly from the seawater, with minor amounts of extraterrestrial Xe and Ne in the IDPs. Compared with the porous and outer layers, the compact layer has a relatively high 4He content and lower 3He/4He ratios, suggesting that marine phosphatization might have greatly modified the noble gas isotopic compositions of the crusts. Besides, the 3He/4He values of the basaltic substrates of the cobalt-rich crusts are very low and their R/R. ratios are mostly 〈0.1 R., which are similar to that of phosphorite substrates （0.087 R.）, but much lower than that of fresh submarine MORB （8.75±14 Ra） or seamount basalts （3-43 Ra）, implying that the basaltic substrates have suffered strong water/rock interaction and reacted with radiogenic ^4He and P-rich upwelling marine currents during phosphatization. The trace elements released in the basalt/seawater interaction might favor the growth of cobalt-rich crusts. The relatively low ^3He/^4He values in the seamount basalts may be used as an important exploration criterion for the cobalt-rich ferromanganese crusts.
