Results 61 to 70 of about 2,466 (152)
Blockchain digital forensics: technology and architecture [PDF]
Issues of limited scene adaptability, inadequate evidence preservation, and low efficiency in traditional digital forensics were addressed by analyzing the feasibility of incorporating decentralized, tamper-resistant blockchain technology into digital ...
FAN Wei, LI Haibo, ZHANG Zhujun
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Survey of blockchain:principle,progress and application [PDF]
, 2020 Blockchain is a kind of distributed ledger technology that upgrades to a complete storage system by adding logic control functions such as intelligent contracts.With the changes of its classification,service mode and application requirements,the core ...
Jiang LIU +5 more
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Multi-keyword attribute-based searchable encryption scheme supporting re-encryption for cloud storage [PDF]
To address fine-grained access control, secure sharing, and encrypted key updates in a one-to-many model, a multi-keyword attribute-based searchable encryption scheme with proxy re-encryption for cloud storage was proposed.
LI Pengcheng +6 more
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Gaoya dianqi, 2020 长期以来,配网用电压电流传感器无法实现长期运行误差在线监测,不仅制约了配电设备一二次深度融合和智能化发展,而且成了配电网实现智能化的阻碍。文中提出了一种基于傅里叶变换的电压电流传感器长期运行误差在线测试方法,研发了由标准电压电流转换器、采集器和工控机构成的电压电流传感器误差在线测试装置,通过高精度测量电路和数字信号的交、基波的分解处理及离线校准技术,对装置的整体测量准确度和运行可靠性进行了充分验证,确保装置满足在线测试要求。基于该装置搭建了电压电流传感器长期在线误差测试平台 ...
韩筛根, 陈驰, 王自桢
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Zhongguo shiyan zhenduanxue, 2013 唐氏综合征又叫先天愚型,是人类最常见的染色体异常引起的疾病。发生率约为活产儿的1/800[1]。唐氏儿先天智力低下,生活不能自理,给家庭造成极大的心理和经济负担,而且无法治疗,只有进行早期诊断,终止妊娠,才能达到优生的目的。神经管畸形也是一种高发严重的先天缺陷 ...
宋新, 文江平, 万晓华
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Gaoya dianqi, 2016 随着智能变电站技术的快速发展,GIS电子式电压互感器已逐渐应用于智能变电站中。电子式电压互感器的绝缘特性是制约其长期运行稳定性和测量精度的关键因素之一,保证互感器内部绝缘可靠尤为重要。笔者通过理论分析、有限元仿真及实验相结合的方法,对220 k V电子式电压互感器内部绝缘特性进行了研究。首先通过理论分析得出互感器内部电场分布和场强,采用增加屏蔽结构对场强集中处进行了优化改进,最后结合有限元仿真和实验对改进后的互感器内部绝缘进行了验证,分析及试验表明互感器的绝缘特性满足运行要求。
翁凌云 +5 more
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Electronic medical records sharing solution based on Hyperledger Fabric [PDF]
In addressing the issues of medical record ownership and access control during the storage and sharing processes of electronic medical record (EMR), an EMR sharing solution based on Hyperledger Fabric was put forward . In this solution, EMR was encrypted
CHEN Jiali +4 more
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Dianxin kexue随着智能算力需求激增，智算中心2.0成为支撑数字经济与AI创新的核心基础设施。针对智算中心1.0阶段存在的资源割裂、数据协同不足及运营模式单一等问题，提出以集约化、协同化与绿色化为导向的2.0演进路径。通过“东数西算”战略优化训练与推理资源布局，推动异构算力兼容与算网协同，构建覆盖基础设施安全、算法可信验证及数据隐私防护的全流程可信体系。同时，深化“5S”全栈服务能力，推动大模型与垂直场景融合，拓展智能制造、智慧城市等应用生态。
刘博士 +6 more
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智能科学与技术学报, 2019 随着新型农业经营模式的发展，消费者可远程对种植者提出种植要求，从而满足其对高品质农产品的需求。农业供应链的利益相关者除了包括消费者和种植者，还包括农场经营者、农资提供方、农技提供方以及第三方监管和金融服务方等。如何构建诚信社区，保障各方利益，实现可持续发展，是一二三产业融合的新型农业模式需要解决的课题。对于有多种利益相关者的农场经营模式，智能合约提供了一种信用保障机制，因此提出了基于智能合约的线上农场平台框架，以区块链技术构建一个与线下相对应的可信任透明社区。与传统的溯源系统不同 ...
王秀娟 +5 more
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Zhongguo shiyan zhenduanxue, 2019 Leigh综合征（Leigh Syndrome,LS）又称亚急性坏死性脑脊髓病（SNEM）,是一种罕见的、由遗传基因缺陷导致的以脑和肌肉受累为主的线粒体疾病。其特征性表现为肌无力、慢性进行性眼外肌麻痹、智能障碍、共济失调、发作性肌阵挛、视神经病变等。典型影像学MRI表现为基底节区及脑干对称性异常信号。据目前报道,约48%至80%的患者在1岁以内发病[1,2],幼儿期发病者少见。另外,近年国外研究显示,线粒体疾病患者中仅约7-10%可检测出线粒体DNA（mitochondrial DNA,mtDNA）变异[
赵宏霞 +4 more
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