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Automatic"Ground Truth"Annotation and Industrial Workpiece Dataset Generation for Deep Learning

International Journal of Automation and computing 2020年第4期17卷 539-550页

作者： fu-qiang liu Zong-Yi Wang College of Automation Harbin Engineering UniversityNo.145 Nantong RoadNangang DistrictHarbin 150001China

In industry,it is becoming common to detect and recognize industrial workpieces using deep learning *** this field,the lack of datasets is a big problem,and collecting and annotating datasets in this field is very labor *** researchers need to perform dataset annotation if a dataset is generated by *** is also one of the restrictive factors that the current method based on deep learning cannot expand *** present,there are very few workpiece datasets for industrial fields,and the existing datasets are generated from ideal workpiece computer aided design(CAD)models,for which few actual workpiece images were collected and *** propose an automatic industrial workpiece dataset generation method and an automatic ground truth annotation *** in our methods are three algorithms that we proposed:a point cloud based spatial plane segmentation algorithm to segment the workpieces in the real scene and to obtain the annotation information of the workpieces in the images captured in the real scene;a random multiple workpiece generation algorithm to generate abundant composition datasets with random rotation workpiece angles and positions;and a tangent vector based contour tracking and completion algorithm to get improved contour *** our procedures,annotation information can be obtained using the algorithms proposed in this *** completion of the annotation process,a json format file is *** R-CNN(Faster R-convolutional neural network),SSD(single shot multibox detector)and YOLO(you only look once:unified,real-time object detection)are trained using the datasets proposed in this *** experimental results show the effectiveness and integrity of this dataset generation and annotation method.

关键词： Deep learning dataset generation automatic annotation neural networks industrial workpiece dataset

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EFFECT OF HYPERCROSSLINKED RESINS SURFACE CHEMISTRY ON THE ADSORPTION OF PHENOL FROM AQUEOUS SOLUTION

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Chinese Journal of Polymer Science 2006年第6期24卷 585-591页

作者： Guan-hua Meng Ai-min Li Wei-ben Yang fu-qiang liu Quan-xing Zhang State Key Laboratory of Pollution Control and Resources Reuse School of the Environment Nanjing University Nanjing 210093 China Engineering Technology Research Center of Organic Toxie Substance Control and Resource Reuse of Jiangsu Province Nanjing 210038 China

Two hypercrosslinked resins with similar physical characters but different surface chemistry were synthesized and used to remove phenol from aqueous solutions. The FTIR spectra, elemental analysis and the Boehm titration were used to characterize the chemical properties of the resins. The adsorption experiments were carried out using the bottle-point technique, and the effects of the surface chemistry on the adsorption were discussed. The adsorption data fit well with the Freundlich model, indicating the heterogeneity of the resins surface. It could be seen from the experimental results that the adsorption capacity increased with the increase in the total surface concentration of oxygen-containing groups. The pH dependence and the effects of ionic strength were also discussed. The kinetic adsorption data fit well with the pseudo-second order model, and the results showed that the surface oxygen-containing groups have little effect on the adsorption rate.

关键词： Hypercrosslinked resin Phenol Surface chemistry Adsorption isotherm Kinetic study.

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Design, Synthesis and Anticancer Activity of Novel 6-（Aminophenyl）-2,4-bismorpholino-1,3,5-triazine Derivatives Bearing Arylmethylene Hydrazine Moiety

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Chemical Research in Chinese Universities 2014年第2期30卷 257-265页

作者： HUANG qiang fu qiangqiang liu Yajing BAI Jinying WANG Qianying LIAO Huimin GONG Ping Key Laboratory of Structure-Based Drug Design and Discovery Ministry of EducationShenyang Pharmaceutical University Shenyang 110016 P.R.China

In an attempt to develop potent and selective anticancer agents,we designed and synthesized a series of novel bis（morpholino-1,3,5-triazine） derivatives beating aylmethylene hydrazine moiety and evaluated their cytotoxicity,in vitro,against H460（non-small-cell lung cancer）,HT-29（human colorectal cancer） and MDA-MB-231（human breast cancer） cell *** pharmacological results indicate that all the compounds exhibit enhanced cytotoxicity than BMCL-200908069-1,and six target compounds（7e,7h,7j,9a,9b,9c） were superior to PAC-1 against all the tested cancer cell *** most active compound 7j,with IC50（inhibitory concentration 50％）values of 0.75,0.34 and 0.60 μ mol/L against HT-29,H460 and MDA-MB-231 cancer cell lines,was 39-,28-,and 60-fold more potent than BMCL-200908069-1 （29.24,9.52 and 36.21 μmol/L）,respectively.

关键词： Bis(morpholino-1,3,5-triazine) Design Anticancer activity

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Synergistic co-removal of zinc(Ⅱ) and cefazolin by a Fe/amine-modified chitosan composite

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Chinese Chemical Letters 2019年第12期30卷 2196-2200页

作者： Chen Ling Yixuan Zhao Zixi Ren Jiangang Han Changqing Zhu fu-qiang liu College of Biology and the Environment Nanjing Forestry UniversityNanjing 210037China State Key Laboratory of Pollution Control and Resource Reuse School of the EnvironmentNanjing UniversityNanjing 210023China

A novel Fe/amine modified chitosan composite(Fe/N-CS) was facilely synthesized and showed higher affinity to both Zn(Ⅱ) and cefazolin(CEF) than its *** co-adsorption of them by Fe/NCS was observed in varied *** adsorption amount maximally increased by 100.1% for Zn and68.2% for CEF in bi-solute *** initial adsorption rate of Zn(Ⅱ) also improved with *** increasing temperature facilitated *** results of the preloading tests,FTIR/XPS characterizations and DFT calculations suggested that(1) both polyamines and Fe sites participated in the adsorption of Zn(Ⅱ) and CEF,(2) Zn(Ⅱ) could serve as a new efficient site for CEF,forming [amineZn-CEF]/[FeOH-Zn-CEF] ternary complexes,and(3) the co-presence of CEF shielded the electrostatic repulsion between protonated amines and Zn(Ⅱ),contributing to the enhancement of Zn(Ⅱ) ***,the ion strength exerted positive and negative influences on the adsorption of Zn(Ⅱ) and CEF,***,CEF and Zn(Ⅱ) were successively recovered by 0.1 mol/L NaOH followed by2 mmol/L ***/N-CS could be stably reused five *** findings imply that Fe/N-CS is promising for the highly efficient co-removal of concurrent heavy metals and antibiotics.

关键词： Coadsorption Heavy metal ions Antibiotics Biomass Bridging effect Polyamine Hydrous ferric oxide

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The Effect of Key Nodes on theMalware Dynamics in the Industrial Control Network

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Computers, Materials & Continua 2024年第4期79卷 329-349页

作者： qiang fu JunWang Changfu Si Jiawei liu College of Computer Science and Technology Shenyang University of Chemical TechnologyShenyang110142China College of Computer Science and Engineering Northeastern UniversityShenyang110169China

As industrialization and informatization becomemore deeply intertwined,industrial control networks have entered an era of *** connection between industrial control networks and the external internet is becoming increasingly close,which leads to frequent security *** paper proposes a model for the industrial control *** includes a malware containment strategy that integrates intrusion detection,quarantine,and ***,the role of keynodes in the spreadofmalware is studied,a comparisonexperiment is conducted to validate the impact of the containment *** addition,the dynamic behavior of the model is analyzed,the basic reproduction number is computed,and the disease-free and endemic equilibrium of the model is also obtained by the basic reproduction ***,through simulation experiments,the effectiveness of the containment strategy is validated,the influence of the relevant parameters is analyzed,and the containment strategy is *** otherwords,selective immunity to key nodes can effectively suppress the spread ofmalware andmaintain the stability of industrial control *** earlier the immunization of key nodes,the *** the time exceeds the threshold,immunizing key nodes is almost *** analysis provides a better way to contain the malware in the industrial control network.

关键词： Key nodes dynamic model industrial control network simulation

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Study on the Formation Mechanism of Oxygen-containing Groups on the Surfaces of Hypercrosslinked Polystyrenes

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Chinese Chemical Letters 2006年第1期17卷 121-124页

作者： Guan Hua MENG Ai Min LI Lin WU fu qiang liu Quan Xing ZHANG State Key Laboratory of Pollution Control and Resource Reuse School of the Environment Nanjing University Nanjing 210093 Engineering Technology Research-Center of Organic Toxic Substance Control and Resource Reuse of Jiangsu Province Nanjing 210038

The synthetic parameters were changed to explore the formation mechanism of the oxygen-containing groups on the surfaces of the hypercrosslinked polymers. The FT-IR spectra and the Boehm titration were used to characterize the surface chemistry of the synthesized polymers. The GC-MS was applied to analyze nitrobenzene which was the solvent in the reaction. The functionalities such as carbonyls and phenols were formed through the oxidation of residual chloromethyl groups by nitrobenzene and the carboxylic groups were formed through further oxidation by oxygen. The nitrobenzene was deoxidized to nitrosobenzene and further to aniline.

关键词： Synthesis oxygen-containing groups mechanism.

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Characterization and degradation of β-Sn particles in thermal aged Pb-rich solder joint for low-temperature co-fired ceramic(LTCC) applications

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Rare Metals 2024年第10期43卷 5346-5361页

作者： Jin-Hong liu Zhe Zhu qiang-qiang Nie Jun-fu liu Peng He Shu-Ye Zhang State Key Laboratory of Advanced Welding and Joining Harbin Institute of Technology Anhui Key Laboratory of Microsystem East China Research Institute of Microelectronics School of Materials Science and Engineering Hefei University of Technology

High-lead solder joints are still playing an indispensable role in military and space ***, in-depth characterization of high-lead solder joints and the underlying degradation mechanisms remain unexplored. This research first performed aging tests on Sn10Pb90 solder joints, the shear strength at room and elevated temperatures gradually reduced, and the resistance increased. Here, a two-layered Ni–Sn intermetallic compound(IMC) structure was identified using transmission electron microscopy(TEM), which could be attributed to the change of Sn content in the solder. Moreover, the internal annealing twin of a Sn particle was discovered,which could be attributed to creeping induced by thermal expansion coefficient(CTE) difference between Sn and *** analysis of partial and whole annealing twins was conducted through high-resolution TEM(HRTEM).Finally, four degradation mechanisms were *** of the IMC layer would result in increased brittleness and resistivity. For particle coarsening, apart from diminishing the ductility and toughness of the solder joint, it would also accelerate the creeping rate by weakening the phase boundary strength. Regarding voids and cracks induced by phase boundary sliding, wedgeshaped cracking and pore-shaped cracking were discovered and their formation was analyzed. Most importantly, the consumption of Sn resulted in a depletion of wettable layer,leading to the formation of Pb streams and isolated IMC islands, also known as the spalling and delamination of IMCs. Pb diffusion followed a spiral path, which was mutually influenced by orientation misfit and concentration gradient. A technique to prevent cracking was *** research is expected to provide significant technical references for high-lead solder joints.

关键词： Aging Degradation mechanisms High-lead solder joints Properties TEM characterization

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Research progress on micro-force measurement of a hydrate particle system

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Petroleum Science 2024年第4期21卷 2169-2183页

作者： qiang Luo Wei Li Zhi-Hui liu Feng Wang Zhi-Chao liu fu-Long Ning Faculty of Engineering China University of Geosciences (Wuhan) Suzhou Laboratory

It remains a great challenge to understand the hydrates involved in phenomena in practical oil and gas systems. The adhesion forces between hydrate particles, between hydrate particles and pipe walls, and between hydrate particles and reservoir particles are essential factors that control the behaviors of clathrate hydrates in different applications. In this review, we summarize the typical micro-force measurement apparatus and methods utilized to study hydrate particle systems. In addition, the adhesion test results, the related understandings, and the applied numerical calculation models are systematically discussed.

关键词： Clathrate hydrates Hydrate particle Micro-force measurements Adhesion Interactions

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Preparation of Self-limiting Heating Cables with Excellent Processability, Mechanical Properties and PTC Effect via Thermal and Electrical Treatments

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Chinese Journal of Polymer Science 2024年第4期42卷 511-520页

作者： Tian-Hao Yang Tong Wu qiang fu State Key Laboratory of Polymer Materials Engineering College of Polymer Science and EngineeringSichuan UniversityChengdu610065China State Key Laboratory of Polymer Materials Engineering Polymer Research Institute of Sichuan UniversityChengdu610065China

Polymer/conductive filler composites have been widely used for the preparation of self-limiting heating cables with the positive temperature coefficient (PTC) effect. The control of conductive filler distribution and network in polymer matrix is the most critical for performance of PTC materials. In order to compensate for the destruction of the filler network structure caused by strong shearing during processing, an excessive conductive filler content is usually added into the polymer matrix, which in turn sacrifices its processability and mechanical properties. In this work, a facile post-treatment of the as-extruded cable, including thermal and electrical treatment to produce high-density polyethylene (HDPE)/carbon black (CB) cable with excellent PTC effect, is developed. It is found for the as-extruded sample, the strong shearing makes the CB particles disperse uniformly in HDPE matrix, and 25 wt% CB is needed for the formation of conductive paths. For the thermal-treated sample, a gradually aggregated CB filler structure is observed, which leads to the improvement of PTC effect and the notable reduction of CB content to 20 wt%. It is very interesting to see that for the sample with combined thermal and electrical treatment, CB particles are agglomerated and oriented along the electric field direction to create substantial conductive paths, which leads to a further decrease of CB content down to 15 wt%. In this way, self-limiting heating cables with excellent processability, mechanical properties and PTC effect have simultaneously been achieved.

关键词： Self-limiting heating cables Positive temperature coefficient Thermal treatment Electrical treatment

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Respiratory syncytial virus:the possible trigger of airway remodeling through matrix metaUoproteinase activation?

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Chinese Medical Journal 2007年第1期120卷 3-4页

作者： WEN fu-qiang liu Dai-shun Department of Respiratory Medicine West China Hospital WestChina School of Medicine Sichuan University Chengdu 610041China

Respiratory syncytial virus （RSV） is a leading cause of .epidemic respiratory tract illness in children. Severe RSV infections involving the lower respiratory tract are primarily seen in young children with naive immune systems and/or genetic predispositions. However, RSV was not recognized as a potentially serious problem in older adults until the 1970s, when outbreaks of the virus infection occurred in long-term care facilities. Since then, additional studies in hospitalized adults have suggested that RSV may be an important cause of illness in community-dwelling elderly people, patients with suppressed T-cell immunity （such as heart transplant recipients）.

关键词： respiratory syncytial virus matrix metalloproteinase airway remodeling

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