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Risk identification and safety assessment of human-computer interaction in integrated avionics based on STAMP

Journal of Systems Engineering and Electronics 2024年第3期35卷 689-706页

作者： ZHAO Changxiao LI Hao ZHANG Wei dai jun DONG Lei School of Safety Science and Engineering Civil Aviation University of ChinaTianjin 300300China Shenzhen Dajiang Innovation Technology Co. Ltd.Shenzhen 518057China Key Laboratory of Civil Aircraft Airworthiness Technology Civil Aviation Administration of ChinaTianjin 300300China

To solve the problem of risk identification and quantitative assessment for human-computer interaction(HCI)in complex avionics systems,an HCI safety analysis framework based on system-theoretical process analysis(STPA)and cognitive reliability and error analysis method(CREAM)is *** can identify unsafe control actions and find the causal path during the interaction of avionics systems and pilot with the help of formal verification tools *** common performance conditions(CPC)of avionics systems in the aviation environment is established and a quantitative analysis of human failure is carried *** the head-up display(HUD)system interaction process as an example,a case analysis is carried out,the layered safety control structure and formal model of the HUD interaction process are *** the interactive behavior“Pilots approaching with HUD”,four unsafe control actions and35 causal scenarios are identified and the impact of common performance conditions at different levels on the pilot decision model are *** results show that HUD's HCI level gradually improves as the scores of CPC increase,and the quality of crew member cooperation and time sufficiency of the task is the key to its *** case analysis,it is shown that STPACREAM can quantitatively assess the hazards in HCI and identify the key factors that impact safety.

关键词： avionics human-computer interaction(HCI) safety assessment system-theoretic accident model and process human reliability analysis

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Quantitative characterizations of anisotropic dynamic properties in organic-rich shale with different kerogen content

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Petroleum Science 2024年第2期21卷 855-865页

作者： Jian-Yong Xie Yan-Ping Fang Xing-Hua Wu Jian'er Zhao jun-Cheng dai jun-Xing Cao Ji-Xin Deng State Key Laboratory of Oil and Gas Reservoir Geology and Exploitation Chengdu University of TechnologyChengdu610059SichuanChina Key Lab of Earth Exploration&Information Techniques of Ministry of Education Geophysical InstituteChengdu University of TechnologyChengdu610059SichuanChina PetroChina Southwest Oil&Gasfield Company Chengdu610017SichuanChina

Understanding the quantitative responses of anisotropic dynamic properties in organic-rich shale with different kerogen content(KC)is of great significance in hydrocarbon exploration and *** controlled experiments with a single variable is challenging for natural shales due to their high variations in components,diagenesis conditions,or pore *** employed the hot-pressing technique to construct 11 well-controlled artificial shale with varying *** artificial shale samples were successive machined into prismatic shape for ultrasonic measurements along different *** revealed bedding perpendicular P-wave velocities are more sensitive to the increasing KC than bedding paralleling velocities due to the preferential alignments of *** elastic stiffnesses except C_(13)are generally decreasing with the increasing KC,the variation of C_(1) and C_(33)on kerogen content are more sensitive than those of C_(44)and C_(66).Apparent dynamic mechanical parameters(v and E)were found to have linear correlation with the true ones from complete anisotropic equations independent of KC,which hold value towards the interpretation of well logs consistently across formations,Anisotropic mechanical parameters(ΔE and brittlenessΔB)tend to decrease with the reducing KC,withΔB showing great sensitivity to KC *** the range of low KC(10%)shale,compilation of data from natural organic rich-shales globally verified the similar systematic relationships that can be empirically used to predict the fraction of KC in shales.

关键词： Elastic properties Organic shale Anisotropy Kerogen content Physical modeling

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Investigating the causal associations between five anthropometric indicators and nonalcoholic fatty liver disease:Mendelian randomization study

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World Journal of Clinical Cases 2024年第7期12卷 1215-1226页

作者： Xian-Pei Xiao Yong-jun dai Yu Zhang Meng Yang Jian Xie Guo Chen Zheng-jun Yang Department of Oncology Luojiang District People's Hospital of Deyang CityDeyang 618000Sichuan ProvinceChina Department of Orthopaedics Luojiang District People's Hospital of Deyang CityDeyang 618000Sichuan ProvinceChina Department of Infectious Diseases Hospital of Chengdu University of Traditional Chinese MedicalChengdu 610500Sichuan ProvinceChina

BACKGROUND Although the etiology of nonalcoholic fatty liver disease(NAFLD)has not been thoroughly understood,the emerging roles of anthropometric indicators in assessing and predicting the risk of NAFLD have been highlighted by accumulating *** To evaluate the causal relationships between five anthropometric indicators and NAFLD employing Mendelian randomization(MR)*** The Anthropometric Consortium provided genetic exposure data for five anthropometric indicators,including hip circumference(HC),waist circumference(WC),waist-to-hip ratio(WHR),body mass index(BMI),and body fat percentage(BF).Genetic outcome data for NAFLD were obtained from the United Kingdom Biobank and FinnGen ***-wide significant single nucleotide polymorphisms were chosen as instrumental *** MR(UVMR)and multivariable MR(MVMR)designs with analytical approaches,including inverse variance weighted(IVW),MR-Egger,weighted median(WM),and weighted mode methods,were used to assess the causal relationships between anthropometric indicators and *** Causal relationships were revealed by UVMR,indicating that a higher risk of NAFLD was associated with a perunit increase in WC[IVW:odds ratio(OR)=2.67,95%CI:1.42-5.02,P=2.25×10^(−3)],and BF was causally associated with an increased risk of NAFLD(WM:OR=2.23,95%CI:1.07-4.66,P=0.033).The presence of causal effects of WC on the decreased risk of NAFLD was supported by MVMR after adjusting for BMI and ***,no causal association between BF and NAFLD was *** addition,other causal relationships of HC,WHR(BMI adjusted),and BMI with the risk of NAFLD were not retained after FDR *** This study establishes a causal relationship,indicating that an increase in WC is associated with a higher risk of *** demonstrates that a suitable decrease in WC is advantageous for preventing NAFLD.

关键词： Anthropometric indicator Waist circumference Nonalcoholic fatty liver disease Mendelian randomization Genetic variant

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Preoperatively predicting vessels encapsulating tumor clusters in hepatocellular carcinoma:Machine learning model based on contrast-enhanced computed tomography

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World Journal of Gastrointestinal Oncology 2024年第3期16卷 857-874页

作者： Chao Zhang Hai Zhong Fang Zhao Zhen-Yu Ma Zheng-jun dai Guo-Dong Pang Department of Radiology The Second Hospital of Shandong UniversityJinan 250033Shandong ProvinceChina Department of Radiology Qilu Hospital of Shandong UniversityJinan 250014Shandong ProvinceChina Department of Radiology Linglong Yingcheng HospitalYantai 265499Shandong ProvinceChina Department of Scientific Research Huiying Medical Technology Co.LtdBeijing 100192China

BACKGROUND Recently,vessels encapsulating tumor clusters(VETC)was considered as a distinct pattern of tumor vascularization which can primarily facilitate the entry of the whole tumor cluster into the bloodstream in an invasion independent manner,and was regarded as an independent risk factor for poor prognosis in hepatocellular carcinoma(HCC).AIM To develop and validate a preoperative nomogram using contrast-enhanced computed tomography(CECT)to predict the presence of VETC+in *** We retrospectively evaluated 190 patients with pathologically confirmed HCC who underwent CECT scanning and immunochemical staining for cluster of differentiation 34 at two medical *** analysis was conducted on intratumoral and peritumoral regions in the portal vein *** features,essential for identifying VETC+HCC,were extracted and utilized to develop a radiomics model using machine learning algorithms in the training *** model’s performance was validated on two separate test *** operating characteristic(ROC)analysis was employed to compare the identified performance of three models in predicting the VETC status of HCC on both training and test *** most predictive model was then used to constructed a radiomics nomogram that integrated the independent clinical-radiological *** and decision curve analysis were used to assess the performance characteristics of the clinical-radiological features,the radiomics features and the radiomics *** The study included 190 individuals from two independent centers,with the majority being male(81%)and a median age of 57 years(interquartile range:51-66).The area under the curve(AUC)for the combined radiomics features selected from the intratumoral and peritumoral areas were 0.825,0.788,and 0.680 in the training set and the two test sets.A total of 13 features were selected to construct the *** nomogram,combining clinicalradiological and combined radiomics features could acc

关键词： Hepatocellular carcinoma Vessels encapsulating tumor clusters Intratumoral and peritumoral regions Radiomics features Nomog

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基于主动欺骗的反勒索软件方法

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通信学报 2024年第7期45卷 148-158页

作者：陈凯马多贺唐志敏 dai jun 中国科学院信息工程研究所北京100095 中国科学院大学网络空间安全学院北京100095 伍斯特理工学院计算机科学系伍斯特01609

考虑到勒索软件对数据安全构成的严重威胁及其攻击手段的日益智能化和复杂化,针对传统防御方法的局限性,提出了一种基于主动欺骗的反勒索软件方法。结合静态启发式算法和动态启发式算法对欺骗文件进行动态部署,在此基础上建立了基于主... 详细信息

考虑到勒索软件对数据安全构成的严重威胁及其攻击手段的日益智能化和复杂化,针对传统防御方法的局限性,提出了一种基于主动欺骗的反勒索软件方法。结合静态启发式算法和动态启发式算法对欺骗文件进行动态部署,在此基础上建立了基于主动欺骗的动态文件安全模型。针对不同风险级别的勒索软件,采用不同的策略生成动态欺骗文件,通过模拟真实数据的特征来迷惑勒索软件,使其无法区分真实数据和欺骗数据,从而保护用户的真实数据不被加密或破坏。实验结果表明,所提方法有效增加了文件的动态性、多样性和欺骗性,大幅扩展了数据攻击面的转换空间,能够有效地抵御勒索软件攻击。

关键词：主动欺骗反勒索软件数据攻击面数据欺骗

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Asymmetric orbital hybridization in Zn-doped antiperovskite Cu_(1-x)Zn_(x)NMn_(3)enables highly efficient electrocatalytic hydrogen production

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Journal of Energy Chemistry 2024年第2期89卷 304-312,I0008页

作者： Yuxiang Yan Yuxin Cao Zhichao Wang Ka Wang Hengdong Ren Shaoqi Zhang Yi Wang Jian Chen Yong Zhou Lizhe Liu jun dai Xinglong Wu National Laboratory of Solid States Microstructures and School of Physics Nanjing UniversityNanjing 210093JiangsuChina College of Engineering and Applied Sciences Nanjing UniversityNanjing 210093JiangsuChina National Laboratory of Solid States Microstructures and Research Institute of Superconductor Electronics Nanjing UniversityNanjing 210093JiangsuChina School of Mathematics&Physics Jiangsu University Science&TechnologyZhenjiang 212003JiangsuChina

Rational design of efficient and robust earth-abundant alkaline hydrogen evolution reaction(HER)catalysts is a key factor for developing energy conversion ***,antiperovskite nitride CuNMn_(3)has garnered significant interest due to its remarkable properties such as negative/zero thermal expansion and magnetocaloric ***,when utilized as hydrogen evolution catalysts,it encounters large challenge resulting from excessively strong/weak interactions with adsorbed H on Mn/Cu active sites,which leads to low HER *** this study,we introduce an asymmetric orbital hybridization strategy in Zn-doped Cu_(1-x)Zn_(x)NMn_(3)by leveraging the localization of Zn electronic states to reconfigure the electronic structures of Cu and Mn,thereby reducing the energy barrier for water dissociation and optimizing Cu and Mn active sites for hydrogen adsorption and H_(2)*** evaluations reveal that Cu_(0.85)Zn_(0.15)NMn_(3)with x=0.15 demonstrates exceptional electrocatalytic activity in alkaline electrolytes.A low overpotential of 52 mV at 10 mA cm^(-2)and outstanding stability over a 150-h test period are achieved,surpassing commercial Pt/*** research offers a novel strategy for enhancing HER performance by modulating asymmetric hybridization of electron orbitals between multiple metal atoms within a material structure.

关键词： Cu_(1-x)ZnxNMn_(3) Asymmetric orbital hybridization Hydrogen adsorption Hydrogen production

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Controllable shaping of high-index dielectric nanoparticles by exploiting the giant optical force of femtosecond laser pulses

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Photonics Research 2024年第2期12卷 282-291页

作者： YUHENG MAO SHUWEN BAI MINGCHENG PANMAI LIDAN ZHOU SHIMEI LIU SHULEI LI HAIYING LIU HAIHUA FAN jun dai SHENG LAN Guangdong Provincial Key Laboratory of Nanophotonic Functional Materials and Devices School of Information and Optoelectronic Science and EngineeringSouth China Normal UniversityGuangzhou 510006China Shenzhen Institute of Terahertz Technology and Innovation Shenzhen 518102China State Key Laboratory of Optoelectronic Materials and Technologies School of Electronics and Information TechnologySun Yat-sen UniversityGuangzhou 510006China School of Optoelectronic Engineering Guangdong Polytechnic Normal UniversityGuangzhou 510665China

Nanoparticles made of different materials usually support optical resonances in the visible to near infrared spectral range,such as the localized surface plasmons observed in metallic nanoparticles and the Mie resonances observed in dielectric *** optical resonances,which are important for practical applications,depend strongly on the morphologies of *** irradiation is a simple but effective way to modify such optical resonances through the change in the morphology of a *** laser-induced shaping of metallic nanoparticles has been successfully demonstrated,it remains a big challenge for dielectric nanoparticles due to their larger Young’s modulus and smaller thermal ***,we proposed and demonstrated a strategy for realizing controllable shaping of high-index dielectric nanoparticles by exploiting the giant optical force induced by femtosecond laser *** was found that both Si and Ge nanoparticles can be lit up by resonantly exciting the optical resonances with femtosecond laser pulses,leading to the luminescence burst when the laser power exceeds a *** addition,the morphologies of Si and Ge nanoparticles can be modified by utilizing the giant absorption force exerted on them and the reduced Young’s modulus at high *** shape transformation from sphere to ellipsoid can be realized by laser irradiation,leading to the blueshifts of the optical *** was found that Si and Ge nanoparticles were generally elongated along the direction parallel to the polarization of the laser *** shaping of Si and Ge can be achieved by deliberately adjusting the excitation wavelength and the laser *** findings are helpful for understanding the giant absorption force of femtosecond laser light and are useful for designing nanoscale photonic devices based on shaped highindex nanoparticles.

关键词： optical polarization dielectric

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融合移位窗口注意力的光流计算方法

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计算机辅助设计与图形学学报 2024年第8期36卷 1255-1262页

作者：安峰戴军韩振苏州工业园区服务外包职业学院智能制造学院苏州215123 同济大学经济与管理学院上海210092

针对端到端的光流计算方法容易受限于运动模糊、遮挡和大位移的问题,通过引入注意力机制实现对遮挡像素进行更准确的预测,提出一种融合移位窗口注意力的光流计算方法.首先使用移位窗口注意力对原有的特征图进行特征增强,获取更具全局自... 详细信息

针对端到端的光流计算方法容易受限于运动模糊、遮挡和大位移的问题,通过引入注意力机制实现对遮挡像素进行更准确的预测,提出一种融合移位窗口注意力的光流计算方法.首先使用移位窗口注意力对原有的特征图进行特征增强,获取更具全局自相似性的特征,弥补了卷积特征的局部性特点;然后使用移位窗口注意力进行相关体解析,包括2D运动向量解析和光流增量的计算,获得更准确的光流增量;最后引入遮挡图作为位置编码,在计算注意力时考虑更多的像素位置关系.实验结果表明,在Sintel数据集上,端到端的误差达到1.33;在FlyingChairs数据集上,单帧计算时间为69 ms,比全局运动聚合方法减少4.2%,超过了常见光流计算方法的精度和效率.

关键词：光流计算自注意力机制移位窗口注意力位置编码

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机载时间敏感网络链路安全关键度均衡调度方法

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航空学报 2024年第6期45卷 309-322页

作者：赵长啸戴骏董方正李道俊中国民航大学安全科学与工程学院天津300300 民航航空器适航审定技术重点实验室天津300300

针对机载时间敏感网络中多数据混传可能导致的风险汇集问题,综合考虑机载网络中数据传输的的实时性与安全性需求,提出了一种链路安全关键度均衡的调度方法。基于专家评价与熵权法完成系统任务安全关键度量化,通过任务映射表征链路安全... 详细信息

针对机载时间敏感网络中多数据混传可能导致的风险汇集问题,综合考虑机载网络中数据传输的的实时性与安全性需求,提出了一种链路安全关键度均衡的调度方法。基于专家评价与熵权法完成系统任务安全关键度量化,通过任务映射表征链路安全关键度,构建机载TSN链路安全关键度均衡的调度模型;基于配合约束规划的方法构建了链路安全关键度均衡调度方法(LSCB),LSCB调度方法对链路安全关键度的均衡作用与LB方法和SP方法相比,在任务数为50的场景中分别提升了7.1%和25%,在任务数为100的场景中分别提升了17%和18%。研究结果表明LSCB在保证任务传输延迟上界的基础上,可有效缓解风险汇集。

关键词：航空电子机载网络时间敏感网络任务调度分布式综合化航电系统适航

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中国式现代化背景下体育产业数字治理体系构建逻辑与路径

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沈阳体育学院学报 2024年第2期43卷 110-116页

作者：鲁志琴戴俊盐城师范学院体育学院江苏盐城224002

构建体育产业数字治理体系事关中国式现代化与数字中国建设,对推动体育产业高质量发展与体育强国建设具有重要意义。本文立足于中国式现代化背景,探究体育产业数字治理体系构建的要素构成、逻辑理路与实现路径。研究认为,体育产业数字... 详细信息

构建体育产业数字治理体系事关中国式现代化与数字中国建设,对推动体育产业高质量发展与体育强国建设具有重要意义。本文立足于中国式现代化背景,探究体育产业数字治理体系构建的要素构成、逻辑理路与实现路径。研究认为,体育产业数字治理体系的构成要素主要包括制度、技术、数据、渠道、人才。体育产业数字治理体系的构建遵循以模式创新引领体育产业数字治理模式转型、以技术赋能推动体育产业数字治理理念重塑,以及以多元共治促进体育产业数字治理主体协同的逻辑理路。构建路径:发挥制度优势,奠定高质量发展基石以逐步夯实基础;促进技术整合应用,凸显要素重组优势以持续提升动能;推动政企务实合作,加大主体参与力度以不断凝聚主体力量。

关键词：中国式现代化体育产业数字治理体系逻辑路径

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