Using the aggregate measurement of support （AMS） approach of the World Trade Organization （WTO）, this study estimates China＇s product-specific and non-product- specific amber box support levels between 2008 and 2...Using the aggregate measurement of support （AMS） approach of the World Trade Organization （WTO）, this study estimates China＇s product-specific and non-product- specific amber box support levels between 2008 and 2013. The result indicates that China＇s product-specific amber box support level has significantly increased but not yet exceeded the tolerable ceiling of de minimis and remains consistent with WTO rules on agricultural domestic support,＂ that there is still policy room for product-specific amber box support but the ceiling of de minimis has already imposed substantial constraint on China＇s grain price support policies; and that despite rapid increases in non-product-specific amber box support levels, future policy space remains significant. The result also suggests that China should make appropriate adjustments to product-specific amber box support policies in accordance with WTO rules on agricultural domestic support and make proper use of non- product-specific amber box support policies.展开更多
Deep neural network(DNN)has strong representation learning ability,but it is vulnerable and easy to be fooled by adversarial examples.In order to handle the vulnerability of DNN,many methods have been proposed.The gen...Deep neural network(DNN)has strong representation learning ability,but it is vulnerable and easy to be fooled by adversarial examples.In order to handle the vulnerability of DNN,many methods have been proposed.The general idea of existing methods is to reduce the chance of DNN models being fooled by observing some designed adversarial examples,which are generated by adding perturbations to the original images.In this paper,we propose a novel adversarial example generation method,called DCVAE-adv.Different from the existing methods,DCVAE-adv constructs adversarial examples by mixing both explicit and implicit perturbations without using original images.Furthermore,the proposed method can be applied to both white box and black box attacks.In addition,in the inference stage,the adversarial examples can be generated without loading the original images into memory,which greatly reduces the memory overhead.We compared DCVAE-adv with three most advanced adversarial attack algorithms:FGSM,AdvGAN,and AdvGAN++.The experimental results demonstrate that DCVAE-adv is superior to these state-of-the-art methods in terms of attack success rate and transfer ability for targeted attack.Our code is available at https://github.com/xzforeverlove/DCVAE-adv.展开更多
文章重点阐述信息与通信技术(Information and Communications Technology,ICT)基础设施监控系统存在的问题,如监控系统软硬件高度耦合、数据无法共享等,严重影响了监控系统的集约化管理、智能运营和运维等工作的开展。为解决这些问题,...文章重点阐述信息与通信技术(Information and Communications Technology,ICT)基础设施监控系统存在的问题,如监控系统软硬件高度耦合、数据无法共享等,严重影响了监控系统的集约化管理、智能运营和运维等工作的开展。为解决这些问题,提出了底端采集硬件白盒化、监控单元B接口和系统间C接口标准化等方案,以确保ICT基础设施实现集约化管理和智慧运营。展开更多
基金sponsored by the Cultural and Social Sciences Youth Foundation of the Ministry of Education(Grant No.12YJC790296)the National Natural Sciences Foundation Program(Grants No.71273069 and No.71403277)
文摘Using the aggregate measurement of support （AMS） approach of the World Trade Organization （WTO）, this study estimates China＇s product-specific and non-product- specific amber box support levels between 2008 and 2013. The result indicates that China＇s product-specific amber box support level has significantly increased but not yet exceeded the tolerable ceiling of de minimis and remains consistent with WTO rules on agricultural domestic support,＂ that there is still policy room for product-specific amber box support but the ceiling of de minimis has already imposed substantial constraint on China＇s grain price support policies; and that despite rapid increases in non-product-specific amber box support levels, future policy space remains significant. The result also suggests that China should make appropriate adjustments to product-specific amber box support policies in accordance with WTO rules on agricultural domestic support and make proper use of non- product-specific amber box support policies.
基金supported by the Key R&D Program of Science and Technology Foundation of Hebei Province(No.19210310D)the Natural Science Foundation of Hebei Province(No.F2021201020).
文摘Deep neural network(DNN)has strong representation learning ability,but it is vulnerable and easy to be fooled by adversarial examples.In order to handle the vulnerability of DNN,many methods have been proposed.The general idea of existing methods is to reduce the chance of DNN models being fooled by observing some designed adversarial examples,which are generated by adding perturbations to the original images.In this paper,we propose a novel adversarial example generation method,called DCVAE-adv.Different from the existing methods,DCVAE-adv constructs adversarial examples by mixing both explicit and implicit perturbations without using original images.Furthermore,the proposed method can be applied to both white box and black box attacks.In addition,in the inference stage,the adversarial examples can be generated without loading the original images into memory,which greatly reduces the memory overhead.We compared DCVAE-adv with three most advanced adversarial attack algorithms:FGSM,AdvGAN,and AdvGAN++.The experimental results demonstrate that DCVAE-adv is superior to these state-of-the-art methods in terms of attack success rate and transfer ability for targeted attack.Our code is available at https://github.com/xzforeverlove/DCVAE-adv.
文摘文章重点阐述信息与通信技术(Information and Communications Technology,ICT)基础设施监控系统存在的问题,如监控系统软硬件高度耦合、数据无法共享等,严重影响了监控系统的集约化管理、智能运营和运维等工作的开展。为解决这些问题,提出了底端采集硬件白盒化、监控单元B接口和系统间C接口标准化等方案,以确保ICT基础设施实现集约化管理和智慧运营。
