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Efficient Untargeted White-Box Adversarial Attacks Based on Simple Initialization

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Chinese Journal of Electronics 2024年第4期33卷 979-988页

作者： Yunyi ZHOU Haichang GAO jianping he Shudong ZHANG Zihui WU School of Computer Science and Technology Xidian University

Adversarial examples(AEs) are an additive amalgamation of clean examples and artificially malicious perturbations. Attackers often leverage random noise and multiple random restarts to initialize perturbation starting points, thereby increasing the diversity of AEs. Given the non-convex nature of the loss function, employing randomness to augment the attack's success rate may lead to considerable computational overhead. To overcome this challenge,we introduce the one-hot mean square error loss to guide the initialization. This loss is combined with the strongest first-order attack, the projected gradient descent, alongside a dynamic attack step size adjustment strategy to form a comprehensive attack process. Through experimental validation, we demonstrate that our method outperforms baseline attacks in constrained attack budget scenarios and regular experimental settings. This establishes it as a reliable measure for assessing the robustness of deep learning models. We explore the broader application of this initialization strategy in enhancing the defense impact of few-shot classification models. We aspire to provide valuable insights for the community in designing attack and defense mechanisms.

关键词： Deep learning Additives Perturbation methods Noise Mean square error methods Robustness Glass box

Ag3PO4 colloidal nanocrystal clusters with controllable shape and superior photocatalytic activity

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Nano Research 2015年第1期8卷 106-116页

作者： Fei Pang Xueteng Liu Mingyuan he jianping Ge Department of Chemistry Shanghai Key Laboratory of Green Chemistry and Chemical Processes East China Normal UniversityShanghai 200062 China

Cluster-like Ag3PO4 nanostructures including nanoparticles, trisoctahedrons, tetrahedrons and tetrapods have been prepared by the synergetic reaction of Ag nanocrystals, phosphate anions and hydrogen peroxide. The acidity and alkalinity of the reaction solution are tuned to adjust the oxidizing ability of H2O2, and thus control the final morphology. Ag nanocrystals function as a sacrificial precursor, leading to the generation of clusterqike nanostructures. Through a kinetic study, the formation of Ag3PO4 nanocrystal clusters can be understood as the conversion from Ag to AgBPO4 nanocrystals assisted by H2O2, followed by the oriented attachment of nanocrystals into cluster-like colloids with specific shapes. The as-prepared AgBPO4 nanostructures have higher photocatalytic activity than commercial TiO2 and some reported AgBPO4 microcrystals in the degradation of dyes. The catalytic activity decreases in the order nanoparticles 〉 trisoctahedrons 〉 tetrahedrons 〉 tetrapods, while the stability increases in the order nanoparticles 〈 tetrahedrons 〈 trisoctahedrons 〈 tetrapods, which can be explained by the extent of absorption of visible light and structural factors, including size and exposed crystal facets.

关键词： nanocrystal cluster photocatalysis silver phosphate

Effects of insoluble Zn,Cd,and EDTA on the growth,activities of antioxidant enzymes and uptake of Zn and Cd in Vetiveria zizanioides

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Journal of Environmental Sciences 2009年第2期21卷 186-192页

作者： XU Weihong LI Wenyi he jianping Balwant Singh XIONG Zhiting College of Resources and Environmental Sciences Southwest University Chongqing 400716 China Faculty of Agriculture Food and Natural Resources the University of Sydney NSW 2006 Australia College of Resources and Environmental Sciences Wuhan University Wuhan 430072 China

A root-bag experiment was conducted to study the effects of insoluble Zn, Cd, and ethylenediaminetetraacetic acid （EDTA） on the plant growth, activities of antioxidant enzymes, proline, glutathione （GSH）, water-soluble proteins and malondialdehyde （MDA） of Vetiveria zizanioides. The V. zizanioides uptake capacity of Zn and Cd also determined. The results showed that plant growth of V. zizanioides was inhibited by Zn and Cd. The shoot dry weight （SDW） and root dry weight （RDW） decrease by 14.2%, 14.1%, 17.0% and 17.3%, 32.5%, 35.7%, respectively, compared to the control without EDTA addition. After adding EDTA, shoot and root dry weight decreased over 10% and 15%, respectively. The toxicity from insoluble Zn and Cd in soil on SDW and RDW of V. zizanioides was in order： Zn＋Cd 〉 Cd 〉 Zn. The activities of superoxide dismutase （SOD）, peroxidase （POD） and catalase （CAT）, and contents of MDA and proline increased significantly, while the contents of GSH and water-soluble proteins decreased markedly with increasing Zn and Cd toxicity. With EDTA, shoot and root Zn concentrations increased in the Zn treatment by 7.3% and 37.4%, and Cd concentrations in the combined Zn and Cd treatment increased by 18.6% and 391.9% compared to the treatment without EDTA. However, Zn and Cd concentrations in shoot and roots decreased in the Cd treatment compared to the plants grown in absence of EDTA, with exception of root Cd concentration in the presence of EDTA.

关键词： Vetiveria zizanioides antioxidant enzymes glutathione malondialdehyde praline concentration of Zn and Cd

Directional solidification of Ti-45Al-8Nb-(W,B,Y) alloy

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Rare Metals 2010年第3期29卷 292-297页

作者： DING Xianfei LIN Junpin he jianping YE Feng CheN Guoliang State Key Laboratory for Advanced Metals and Materials University of Science and Technology Beijing Beijing 100083 China

Using a Bridgman vertical vacuum furnace,Ti-45Al-8Nb-（W,B,Y）（at.%） bars,which were prepared from a plasma arc melting （PAM） ingot,were directionally solidified at growth rates of 10,15,and 20 μm/*** twinned （PST） crystal with an aligned lamellar microstructure was obtained at the growth rate of 15 μm/s because of high Nb *** principle of PST crystal growth and the effect of Nb element were *** results of investigations on microstructure and micromechanical properties of the directionally solidified （DS） bars of Ti-45Al-8Nb-（W,B,Y） alloy are briefly summarized.

关键词： directional solidification TiA1 alloys larnellar microstructure crystal growth

ENST00000535926 is an unfavorable prognosis-related and tumorpromoting transcript of the CHPF gene in luminal A and B breast cancer

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BIOCELL 2023年第2期47卷 309-318页

作者： JING LUO jianping he YONG LUO CheNG YI Cancer Center West China HospitalSichuan UniversityChengdu610041China Department of Breast Surgery Sichuan Academy of Medical Science&Sichuan Provincial People’s HospitalChengdu610072China

Chondroitin sulfate synthase 2(CHPF)is characterized as an oncogenic and poor prognosis-related gene in breast ***,this gene has alternative splicing products encoding proteins of different *** cancer is a group of heterogeneous tumors with distinct clinical and genomic *** this study,we explored the expression profile and prognostic value of the two transcripts of CHPF using data from The Cancer Genome Atlas(TCGA)-*** functional regulation of the two transcripts was also studied in MCF-7 and BT-474 *** the two transcripts of CHPF,ENST00000535926 expression was significantly upregulated in the tumor samples and was the dominant ***00000535926,but not ENST00000243776 upregulation,was associated with significantly worse progression-free survival(PFS)and disease-specific survival(DSS)in luminal A/B ***,no significant association was observed in PFS or DSS in other Prediction Analysis of Microarray 50(PAM50)*** isoform 2 protein(encoded by ENST00000535926)significantly elevated the expression of P3H1 and RCN3 at the mRNA and protein levels in MCF-7 and BT-474 *** effect of ENST00000535926 was significantly stronger than ENST00000243776 in promoting tumor cell colony *** expression of P3H1 and RCN3 was negatively correlated with CD8+T cell infiltration but was positively correlated with cancer-associated fibroblast infiltration in luminal A/B *** summary,this study revealed that ENST00000535926 is an unfavorable prognosis-related and tumor-promoting transcript of the CHPF gene in luminal A/B breast cancer.

关键词： Breast cancer CHPF ENST00000535926 Luminal A Luminal B

A novel durable intelligent fiber reinforced polymer anchor with embedded optical fiber Bragg grating sensors

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Science China(Technological Sciences) 2012年第5期55卷 1455-1462页

作者： HUANG MingHua ZHOU Zhi YUE Shuai he jianping OU JinPing School of Civil Engineering Harbin Institute of TechnologyHarbin 150090China Faculty oflnfrastructure Engineering Dalian University of TechnologyDalian 116024China

Anchors are the key members of the geotechnical anchorage engineering, it is urgent to monitor their behavior in service for preventing the potential risks. This paper proposes a novel durable intelligent fiber reinforced polymer （FRP） anchor to understand the behavior of the anchor in the field application. Series of optical fiber Bragg grating （FBG） sensors were embedded into the central axis along the anchor to sense itself axial strain variations. An evolution model of axial strain was also developed to evaluate the behavior along the anchor. A demonstration test was carried out to test its self-sensing properties in the laboratory. The experimental results indicated that the embedded FBG sensors monitored the behavior, e.g. axial strairl/interfacial damage evolutions along the anchor and displacement/applied load at the pulling end effectively, without influence from the interfacial compression and slip effects.

关键词： anchor fiber reinforced polymer optical fiber Bragg grating evolution model structural health monitoring

EFFECTS OF SPLITTER BLADES ON The LAW OF INNER FLOW WITHIN CENTRIFUGAL PUMP IMPELLER

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Chinese Journal of Mechanical Engineering 2007年第5期20卷 59-63页

作者： YUAN Shouqi ZHANG Jinfeng YUAN jianping he Youshi FU Yuedeng Research Center of Fluid Machinery Engineering and Technology Jiangsu University Zhenjiang 212013 China

Analysis on the inner flow field of a centrifugal pump impeller with splitter blades is carfled out by numerical simulation. Based on this analysis, the principle of increasing pump head and efficiency are discussed. New results are obtained from the analysis of turbulence kinetic energy and relative velocity distribution： Firstly, unreasonable length or deviation design of the splitter blades may cause great turbulent fluctuation in impeller channel, which has a great effect on the stability of impeller outlet flow; Secondly, it is found that the occurrence of flow separation can be decreased or delayed with splitter blades from the analysis of blade loading; Thirdly, the effect of splitter blades on reforming the structure of ＂jet-wake＂ is explained from the relative velocity distribution at different flow cross-sections, which shows the flow process in the impeller. The inner flow analysis verifies the results of performance tests results and the PIV test.

关键词： Centrifugal pump Splitter blades Turbulent kinetic energy Structure of "jet-wake"Blade loading

Toward practical gas sensing with rapid recovery semiconducting carbon nanotube film sensors

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Science China(Information Sciences) 2022年第6期65卷 226-233页

作者： Fangfang LIU Mengmeng XIAO Yongkai NING Shaoyuan ZHOU jianping he Yanxia LIN Zhiyong ZHANG Hunan Institute of Advanced Sensing and Information Technology Xiangtan University Institute of Microelectronics of Chinese Academy of Sciences and University of Chinese Academy of Sciences Key Laboratory for the Physics and Chemistry of Nanodevices and Center for Carbon-based Electronics Department of Electronics Peking University

Nanomaterials have been considered as promising materials to construct highly sensitive and miniaturized gas sensors due to their high ratio of surface to volume, but almost all of the reported nanomaterials based resistive gas sensors are difficult to use in the practical system mainly owing to the long recovery time and non-equilibrium state at room temperature. here, we demonstrate a gate assistant technology to realize the rapid recovery to an equilibrium state in semiconducting carbon nanotube(CNT) thin-film gas sensors and promote the CNT-based gas sensors to reach the practical application level. Specifically, we construct highly uniform gas sensors based on semiconducting solution-derived CNT film and accelerate the gas molecules desorption by applying a voltage on the back gate(substrate), which is named gate-assistant recovery technology. By combining the gate-assistant recovery technology and a modified concentration calculation method, highly reproducible detection systems have been realized by using a custom-built printed circuit board(PCB) based data acquisition circuits to execute a real-time rapid detection of H2 in the air at room temperature, and especially exhibits a record response time of 9 s and recovery time of 50 s under a resolution of 10 ppm, which outperformed previous low dimensional nanomaterials based portable H2 detection systems. The gate-assistant rapid recovery and related concentration calculation technologies are helpful to promote the nanomaterials-based gas sensors to practical application for highly sensitive online gas detection.

关键词： carbon nanotube gas sensor thin-film transistors rapid recovery

The distribution of the oil derived from Cambrian source rocks in Lunnan area,the Tarim Basin,China

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Chinese Science Bulletin 2007年第A01期52卷 133-140页

作者： MI JingKui ZHANG ShuiChang CheN jianping TANG LiPing he ZhongHua Research Institute of Petroleum Exploration and Devlopment PetroChina Beijing 100083 China

There are great differences in biomarks between Cambrian oil and Middle-Upper Ordovician oil. In this stuty, the authors analyzed 40 oils found in Lunnan area by GC-MS and calculated the content of Cambrian oil in the 40 oils according to the steroid indexes of typical oil mixture and match experiment. The results show that it is a general phenomenon in Ordovician reservoir that the oil derived from Cambrian source rock mixed with the oil derived from Middle-Upper Ordovician source rock in Lunnan area, the mixture degree of the two oils is lower in Carboniferous reservoir than in Ordovician reservoir, and the oils kept in Triassic reservoir have single source, Middle-Upper Ordovician source rock. The mixture oils mainly composed of Cambrian oil (>50%) distributed in Sangtamu fault zone, and the oils found in Lunnan fault zone are Middle-Upper Ordovician oil. This distribution of oils in Lunnan area is owing to that Lunnan fault zone is located in anticline axis part, Lunnan fault zone underwent serious erosion, and the oils from Cambrian source rock accumulated in Lunnan fault zone were degraded completely during Caledonian-hercynian movement. But the Cambrian oil accumulated in Sangtamu fault zone was not degraded completely and some of them were left for the location of Sangtamu fault zone is lower than Lunnan fault zone. Later, the oil derived from Middle-Upper Ordovician source rock mixed with the remained Cambrian oil, and the mixture oil formed in Sangtamu fault zone.

关键词：塔里木盆地寒武纪油气混合物类固醇