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Feature extraction and learning approaches for cancellable biometrics:A survey

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CAAI Transactions on Intelligence Technology 2024年第1期9卷 4-25页

作者： Wencheng Yang Song Wang jiankun hu Xiaohui Tao Yan Li School of Mathematics Physics and ComputingUniversity of Southern QueenslandToowoombaQueenslandAustralia School of Computing Engineering and Mathematical SciencesLa Trobe UniversityMelbourneVictoriaAustralia School of Engineering and Information Technology University of New South Wales at the Australian Defence Force Academy(UNSW@ADFA)CanberraAustralian Capital TerritoryAustralia

Biometric recognition is a widely used technology for user *** the application of this technology,biometric security and recognition accuracy are two important issues that should be *** terms of biometric security,cancellable biometrics is an effective technique for protecting biometric *** recognition accuracy,feature representation plays a significant role in the performance and reliability of cancellable biometric *** to design good feature representations for cancellable biometrics is a challenging topic that has attracted a great deal of attention from the computer vision community,especially from researchers of cancellable *** extraction and learning in cancellable biometrics is to find suitable feature representations with a view to achieving satisfactory recognition performance,while the privacy of biometric data is *** survey informs the progress,trend and challenges of feature extraction and learning for cancellable biometrics,thus shedding light on the latest developments and future research of this area.

关键词： biometrics feature extraction

基于饮用水相关水质标准的供水系统安全运行策略研究

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给水排水 2025年第1期51卷 18-24页

作者：马凯田宝义胡建坤天津水务集团有限公司天津300042

科学认识饮用水标准与其他水质标准的内在联系能够指导水质安全保障技术创新与应用,推动供水事业高质量发展。通过对比国内外5部饮用水标准,首先提出构建以双值体系为特征、以说明材料为支撑、对参考指标动态更新、以地方、团体标准作... 详细信息

科学认识饮用水标准与其他水质标准的内在联系能够指导水质安全保障技术创新与应用,推动供水事业高质量发展。通过对比国内外5部饮用水标准,首先提出构建以双值体系为特征、以说明材料为支撑、对参考指标动态更新、以地方、团体标准作为补充的饮用水标准体系。在分析4部饮用水相关水质标准间差异的基础上,指出应对《生活饮用水卫生标准》中特有指标及限值更为严格的指标加以关注,更应站在水循环视角整体解读饮用水水质标准体系,进而开展供水系统工程技术优化升级与水质管理支撑体系构建工作,形成饮用水安全多级保护屏障。

关键词：供水系统饮用水标准体系指标限值

Eco-friendly biodegradable polyurethane based coating for antibacterial and antifouling performance

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Chinese Journal of Chemical Engineering 2023年第2期54卷 80-88页

作者： Abid Ali Bilal Ul Amin Wenwu Yu Taijiang Gui Weiwei Cong Kai Zhang Zheming Tong jiankun hu Xiaoli Zhan Qinghua Zhang College of Chemical and Biological Engineering Provincial Key Laboratory of Advanced Chemical Engineering Manufacture TechnologyZhejiang UniversityHangzhou 310027China Institute of Mold Technology Changzhou Vocational Institute of Mechatronic TechnologyChangzhou 213164China State Key Laboratory of Marine Coatings Marine Chemical Research Institute Co.LtdQingdao 266072China Quzhou Research Institute Zhejiang UniversityQuzhou 324000China

Biofouling, which comprises the absorption of proteins and the adhesion of bacteria to the surface of living entities, is a severe concern for the maritime sector since it ultimately leads to hydrodynamic drag,resulting in a higher increase in fuel consumption. As a result, polymer resins are crucial in the marine sector for anti-biofouling coatings. In this work, the poly(caprolactone-ethylene glycol-caprolactone)-p olyurethane(PECL-PU) are prepared through ε-caprolactone(CL), poly(ethylene glycol)(PEG), 4,4'-methylene bis(cyclohexyl isocyanate) and 1,4 butanediol. Our study demonstrate that the PECL-PU copolymer degraded in artificial seawater(5.21%), enzymatic solution(12.63%), and seawater(13.75%)due to the presence of PEG segments in the laboratory-based test under static condition. Because the addition of PEG segments are increased the polymer's amorphous area and decreased the crystallization of the polycaprolactone(PCL) in the copolymer, as demonstrated by differential scanning calorimetry, X-ray diffraction, and water contact angle studies. Therefore, the hydrolysis rates of PECL-PU were higher than the caprolactone-co-polyurethane(CL-PU). The antifouling test showed that PECL-PU3 copolymer had about 90.29% protein resistance, 85.2% Escherichia coli(E. coli) reduction and 94.61% marine diatom Navicula incerta reduction comparison to the control. We have developed an eco-friendly and inexpensive promising degradable polyurethane for reduction of bacterial biofilm, which can preserve the formation of biofouling on marine coating under practical sea conditions.

关键词： Caprolactone PEG segments Biodegradable polyurethane Biofouling Hydrolytic degradation

Synthesis and characterization of caprolactone based polyurethane with degradable and antifouling performance

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Chinese Journal of Chemical Engineering 2021年第6期34卷 299-306页

作者： Abid Ali Lina Song jiankun hu Jingxian Jiang Qingqing Rao Muhammad Shoaib Shah Fahad Yongjie Cai Xiaoli Zhan Fengqiu Chen Qinghua Zhang College of Chemical and Biological Engineering Zhejiang Provincial Key Laboratory of Advanced Chemical EngineeringManufacture TechnologyZhejiang UniversityHangzhou 310027China Ningbo Research Institute Zhejiang UniversityNingbo 315100China

In this work,a degradable polyurethane composed of caprolactone(CL)and L-Lactide(LLA)as soft segments,and 4,40-methylenebis(cyclohexyl isocyanate)(H12 MDI)and polytetramethylene ether glycol(PTMEG)as hard segments,was *** degradation experiment revealed that the degradable polyurethane(PU)could be degraded in artificial *** also showed that caprolactone-copolyurethane(CL-PU)copolymer with higher crystallinity degraded much slower in artificial ***,the introduction of LLA resulted in an increase in the hydrophilicity and reduction in the crystallinity of degradable PU,as demonstrated by the contact angle *** result of the scanning electron microscope showed that the surface of degradable PU renewed under static ***,degradable PU was able to be used as a carrier,and it controlled the release rate of 4,5-dichloro-2-octyl-isothiazolone(DCOIT).The anti-diatom(Navicula incerta)test demonstrated that the(caprolactone-co-L-lactide)-co-polyurethane 4(CL/LAx-PU4)with DCOIT contents prevented the adhesion of diatom Navicula incerta(88.37%reduction)due to their self-polishing and the release of ***,the degradable PU consisted of CL,LLA,and DCOIT could be a durable resin with good antifouling activity for the application in the marine anti-biofouling field.

关键词： Antifoulant 4 5-dicholoro-2-octyl-isothiazolone Degradable polyurethane L-Lactide Caprolactone

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青海省湟中区马铃薯生物拌种剂筛选试验初探

农业技术与装备 2025年第1期 156-158,161页

作者：胡建焜谢春晖关琪张丽萍罗生云西宁市湟中区农业技术推广中心青海湟中811600 西宁市农业技术推广服务中心青海西宁810000 西宁市拉沙种养殖专业合作社青海湟中811600

为了筛选出适合当地马铃薯绿色高产高效生产的拌种剂,选用6种不同生产厂家的生物拌种剂,以不做拌种播种空白处理为对照,开展田间试验。试验结果表明,在其他生产管理措施一致的前提下,马铃薯拌种剂处理后较空白处理均表现为出苗早、出苗... 详细信息

为了筛选出适合当地马铃薯绿色高产高效生产的拌种剂,选用6种不同生产厂家的生物拌种剂,以不做拌种播种空白处理为对照,开展田间试验。试验结果表明,在其他生产管理措施一致的前提下,马铃薯拌种剂处理后较空白处理均表现为出苗早、出苗率高、病株率低、商品率高、产量高的综合表现,使用盛兴隆拌种剂处理的马铃薯产量最高,比空白对照增产672.03 kg,增幅18.63%,综合表现最佳,适合大面积推广应用。

关键词：马铃薯拌种剂筛选效果

Comparison of long-term quality of life between Billroth-I and Roux-en-Y anastomosis after distal gastrectomy for gastric cancer: a randomized controlled trial

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Chinese Medical Journal 2023年第9期136卷 1074-1081页

作者： Kun Yang Weihan Zhang Zehua Chen Xiaolong Chen Kai Liu Linyong Zhao jiankun hu Department of General Surgery&Laboratory of Gastric Cancer State Key Laboratory of Biotherapy/Collaborative Innovation Center of Biotherapy and Cancer CenterWest China HospitalSichuan UniversityChengduSichuan 610041China Gastric Cancer Center West China HospitalSichuan UniversityChengduSichuan 610041China

Background:The results of studies comparing Billroth-I(B-I)with Roux-en-Y(R-Y)reconstruction on the quality of life(QoL)are still *** aim of this trial was to compare the long-term QoL of B-I with R-Y anastomosis after curative distal gastrectomy for gastric ***:A total of 140 patients undergoing curative distal gastrectomy with D2 lymphadenectomy in West China Hospital,Sichuan University from May 2011 to May 2014 were randomly assigned to the B-I group(N=70)and R-Y group(N=70).The follow-up time points were 1,3,6,9,12,24,36,48,and 60 months after the *** final follow-up time was May *** clinicopathological features,operative safety,postoperative recovery,long-term survival as well as QoL were compared,among which QoL score was the primary *** intention-to-treat analysis was ***:The baseline characteristics were comparable between the two *** were no statistically significant differences in terms of postoperative morbidity and mortality rates,and postoperative recovery between the two *** estimated blood loss and shorter surgical duration were found in the B-I *** were no statistically significant differences in 5-year overall survival(79%[55/70]of the B-I group vs.80%[56/70]of the R-Y group,P=0.966)and recurrence-free survival rates(79%[55/70]of the B-I group vs.78%[55/70]of the R-Y group,P=0.979)between the two *** scores of the global health status of the R-Y group were higher than those of the B-I group with statistically significant differences(postoperative 1 year:85.4±13.1 vs.88.8±16.1,P=0.033;postoperative 3 year:87.3±15.2 vs.92.8±11.3,P=0.028;postoperative 5 year:90.9±13.7 vs.96.4±5.6,P=0.010),and the reflux(postoperative 3 year:8.8±12.9 vs.2.8±5.3,P=0.001;postoperative 5 year:5.1±9.8 vs.1.8±4.7,P=0.033)and epigastric pain(postoperative 1 year:11.8±12.7 vs.6.1±8.8,P=0.008;postoperative 3 year:9.4±10.6 vs.4.6±7.9,P=0.006;postoperative 5 year:6.0±8.9 vs.2.7±4.6,P=0.022)w

关键词： Gastric cancer Distal gastrectomy Digestive tract reconstruction Billroth-I anastomosis Roux-en-Y anastomosis Quality of life

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中国农村住房制度:面临挑战与改革思路

城市发展研究 2011年第10期18卷 32-37页

作者：胡建坤中国农业大学经济管理学院

首先论述我国农村住房制度的存在性,然后对其产生背景、历史意义进行简要评价;在对我国农村住房制度基本内容进行梳理的基础上,重点阐述其面临的问题和遭遇的挑战,最后提出新形势下我国农村住房制度改革完善的基本思路。

关键词：农村住房制度问题改革

4K腹腔镜胃癌根治术右侧站位胰腺上区淋巴结清扫

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中华消化外科杂志 2020年第Z1期19卷 50-53页

作者：杨昆胡建昆四川大学华西医院胃肠外科

腹腔镜胃癌根治术已接近开腹手术的安全性及肿瘤学疗效, 在胃癌的治疗中应用广泛。淋巴结清扫, 尤其是胰腺上区淋巴结清扫是腹腔镜胃癌根治术的难点及重点。笔者探讨4K腹腔镜胃癌根治术中胰腺上区淋巴结清扫的适应证、手术准备、胰腺上... 详细信息

腹腔镜胃癌根治术已接近开腹手术的安全性及肿瘤学疗效, 在胃癌的治疗中应用广泛。淋巴结清扫, 尤其是胰腺上区淋巴结清扫是腹腔镜胃癌根治术的难点及重点。笔者探讨4K腹腔镜胃癌根治术中胰腺上区淋巴结清扫的适应证、手术准备、胰腺上区各淋巴结的分界及清扫标准, 以及相关手术并发症, 分享以右侧站位开展胰腺上区淋巴结清扫的经验及步骤。

关键词：胃肿瘤淋巴结清扫胰腺上区 4K分辨率腹腔镜检查

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从循证医学角度看胃癌的脾门淋巴结清扫

中华胃肠外科杂志 2015年第8期18卷 763-766页

作者：杨昆胡建昆四川大学华西医院胃肠外科中心胃癌研究室成都610041

对于胃癌根治术的脾门淋巴结清扫问题，仍有许多争议。如脾门淋巴结是否需要清扫？若需清扫是保留脾脏的清扫还是切除脾脏？最佳清扫方法是什么？腹腔镜或机器人脾门淋巴结清扫是否可行？本文将从循证外科的角度针对这些问题进行讨论。

关键词：胃肿瘤脾门淋巴结第10组淋巴结脾切除术循证医学