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期刊论文 5

年份

2022 3

2020 1

2011 1

关键词

区块链 1

去中心化 1

后量子密码;门限代理重加密;格;鲁棒性;去中心化 1

多源域自适应;数据去中心化;域偏移;负迁移 1

数据管理 1

透明 1

隐私 1

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Integrated river basin management in rapidly urbanizing areas: a case of Shenzhen, China

Lei LIU, Xiaoming MA

《环境科学与工程前沿(英文)》 2011年 第5卷 第2期   页码 243-254 doi: 10.1007/s11783-010-0276-0

摘要: The rapid urbanization of China is causing a burden on their water resources and hindering their sustainable development. This paper analyzes effective methods to integrated river basin management (IRBM) using Longgang River basin of Shenzhen as an example, which is the city with the fastest rate of urbanization in China and even the whole world. Over the past 20 years, China has undergone a population boom due to the increase of immigrant workers and rapid development of labor-intensive industries, which led to the sharp increase of water consumption and sewage discharge. However, the construction of the water infrastructure is still lagging far behind the environmental and social development, with only 32.7% of sewage in the district being treated. Currently, every water quality indicator of the Longgang River basin was unable to meet the required corresponding environmental standards, which further aggravated the water shortages of the region. Thus, an analytical framework is proposed to address the IRBM of the study area. The problems with the current management system include the lack of decentralization in decision-making, lack of enforcement with redundant plans, weak management capacity, financial inadequacy, and a poor system of stakeholder participation. In light of the principles of IRBM and the situation of the region, corresponding measures are put forward, including an increase of power given to sub-district offices, fewer but more feasible plans, capacity building among stakeholders, a combination of planning and marketing for overcoming financial inadequacy, and profound reform in the public participation system. The framework and institutional suggestions could inform similar processes in other representative river basins.

关键词: integrated river basin management (IRBM) model     Longgang River basin     Shenzhen     decentralization     stakeholder participation    

Blockchain-driven supply chain finance solution for small and medium enterprises

Jian LI, Shichao ZHU, Wen ZHANG, Lean YU

《工程管理前沿(英文)》 2020年 第7卷 第4期   页码 500-511 doi: 10.1007/s42524-020-0124-2

摘要: Blockchain has attracted much attention in recent years with the development of cryptocurrency and digital assets. As the underlying technology of cryptocurrency, blockchain has numerous benefits, such as de-centralization, collective maintenance, tamper-resistance, traceability, and anonymity. The potential of the blockchain technology (BT) is widely recognized in the financial field. Although some scholars have proposed the combination of blockchain and supply chain finance (SCF), the details of this combination is rarely mentioned. This study first analyzes the coupling between SCF and blockchain technology. Second, the conceptual framework of blockchain-driven SCF platform (BcSCFP) is presented. Third, the operation process of three SCF models on the BcSCFP is proposed. Finally, a case study combined with actual events is conducted. This paper has a positive practical significance in the operation and management of banks and loan enterprises.

关键词: blockchain technology     supply chain finance     risk management     smart contract     decentralization    

双向协同的去中心化多源域自适应 Research Article

魏义康1,2,韩亚洪1,2

《信息与电子工程前沿(英文)》 2022年 第23卷 第12期   页码 1780-1794 doi: 10.1631/FITEE.2200284

摘要: 去中心化多源域自适应是指在数据去中心化场景下执行无监督多源域自适应。数据去中心化的挑战是源域与目标域在训练中缺乏跨域协同。对于无标签的目标域,目标域模型需要在源域模型的协助下迁移监督知识,而域差距会导致源域模型的适应性能有限。对于有标签的源域,源域模型在数据去中心化场景下倾向于过拟合本地数据,从而导致负迁移问题。对于以上挑战,提出双向协同的去中心化多源域自适应方法,通过其它域模型的协助进行局部源域模型与局部目标域模型的协同训练与聚合。对于目标域,我们在源域模型的协助下蒸馏监督知识,同时完全利用无标签目标域的数据来缓解域偏移问题。对于源域,我们在目标域模型的协助下正则化源域模型来避免负迁移问题。以上过程在去中心化的源域和目标域之间形成一种双向协同,以便在数据去中心化场景下提升域自适应性能。在标准多源域自适应数据集上的实验表明,我们的方法以较大优势优于现有的多源域自适应方法。

关键词: 多源域自适应;数据去中心化;域偏移;负迁移    

下一代无线网络中基于区块链的透明数据管理 Article

沈学民, 刘栋骁, 黄橙, 薛靓, 尹涵, 庄卫华, Rob Sun, Bidi Ying

《工程(英文)》 2022年 第8卷 第1期   页码 74-85 doi: 10.1016/j.eng.2021.10.002

摘要:

未来第六代无线网络(6G)需要依赖丰富的数据实现网络智能化和自动化。在这种情况下,考虑到数据的异构性和动态性,基于区块链的去中心化的数据管理(DM)被认为是实现跨网络域的透明数据操作的潜在解决方案之一。然而,在6G网络中,不断增加的数据量和严格的数据隐私保护需求为平衡基于区块链的去中心化数据管理的透明、效率以及隐私需求带来巨大的技术挑战。本文中,首先,我们探索区块链的共识协议和可扩展机制,并讨论区块链构架下如何管理利益相关者的角色;其次,我们探讨针对数据管理利益相关者的认证与授权需求;再次,我们归类数据管理的隐私需求,并研究基于区块链的协同数据处
理机制;随后,我们从上述三个方面探讨面向6G的基于区块链数据管理的研究问题和潜在解决方案;最后,我们对本文进行总结并讨论未来的研究方向。

关键词: 区块链     数据管理     去中心化     透明     隐私    

格上基于身份的门限代理重加密方案及应用 Research Articles

吴立强1,韩益亮1,杨晓元1,2,张敏情1

《信息与电子工程前沿(英文)》 2022年 第23卷 第2期   页码 258-277 doi: 10.1631/FITEE.2000366

摘要: 门限代理重加密通过设置多个代理者,不仅能有效防止单个代理者和被授权者合谋,从而违背授权者的意愿随意转化任意文件,而且能在某些代理者瘫痪或者损毁的情况下仍然提供正常服务。本文提出一个格上非交互的基于身份门限代理重加密方案,无需公钥证书。在设计方案过程中,采用了两次Shamir的秘密共享方法,一方面有效隐藏了授权者的私钥信息,另一方面通过分割代理重加密密钥,实现了代理权限的去中心化。鲁棒性是指某个代理者如果提交了非法的密文转化密文份额,那么组合者会立刻识别出这个恶意的代理者。本文方案通过格上全同态签名实现了这一属性。因此,即使未来量子攻击变得可行,我们整个方案也能完全抵抗量子攻击。本文方案的安全性在标准模型下规约为判定性差错学习困难假设。最后,给出本文方案的两个典型应用场景,包括基于区块链的文件共享系统和基于门限密码学的鲁棒密钥托管系统。

关键词: 后量子密码;门限代理重加密;格;鲁棒性;去中心化    

标题 作者 时间 类型 操作

Integrated river basin management in rapidly urbanizing areas: a case of Shenzhen, China

Lei LIU, Xiaoming MA

期刊论文

Blockchain-driven supply chain finance solution for small and medium enterprises

Jian LI, Shichao ZHU, Wen ZHANG, Lean YU

期刊论文

双向协同的去中心化多源域自适应

魏义康1,2,韩亚洪1,2

期刊论文

下一代无线网络中基于区块链的透明数据管理

沈学民, 刘栋骁, 黄橙, 薛靓, 尹涵, 庄卫华, Rob Sun, Bidi Ying

期刊论文

格上基于身份的门限代理重加密方案及应用

吴立强1,韩益亮1,杨晓元1,2,张敏情1

期刊论文