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An Improved Harris Hawk Optimization Algorithm for Flexible Job Shop Scheduling Problem

Computers, Materials & Continua 2024年第2期78卷 2337-2360页

作者： zhaolin Lv yuexia zhao Hongyue Kang Zhenyu Gao Yuhang Qin College of Systems Engineering National University of Defense TechnologyChangsha410073China College of Information Management Nanjing Agricultural UniversityNanjing210031China Department of Intelligent Supply Chain JD LogisticsBeijing100076China College of Intelligent Science and Technology National University of Defense TechnologyChangsha410073China

Flexible job shop scheduling problem(FJSP)is the core decision-making problem of intelligent manufacturing production management.The Harris hawk optimization(HHO)algorithm,as a typical metaheuristic algorithm,has been widely employed to solve scheduling problems.However,HHO suffers from premature convergence when solving NP-hard problems.Therefore,this paper proposes an improved HHO algorithm(GNHHO)to solve the FJSP.GNHHO introduces an elitism strategy,a chaotic mechanism,a nonlinear escaping energy update strategy,and a Gaussian random walk strategy to prevent premature convergence.A flexible job shop scheduling model is constructed,and the static and dynamic FJSP is investigated to minimize the makespan.This paper chooses a two-segment encoding mode based on the job and the machine of the FJSP.To verify the effectiveness of GNHHO,this study tests it in 23 benchmark functions,10 standard job shop scheduling problems(JSPs),and 5 standard FJSPs.Besides,this study collects data from an agricultural company and uses the GNHHO algorithm to optimize the company’s FJSP.The optimized scheduling scheme demonstrates significant improvements in makespan,with an advancement of 28.16%for static scheduling and 35.63%for dynamic scheduling.Moreover,it achieves an average increase of 21.50%in the on-time order delivery rate.The results demonstrate that the performance of the GNHHO algorithm in solving FJSP is superior to some existing algorithms.

关键词： Flexible job shop scheduling improved Harris hawk optimization algorithm(GNHHO) premature convergence maximum completion time(makespan)

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Geometries and mechanism of folds in sediments on the southern Huanghai Sea shelf

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Acta Oceanologica Sinica 2006年第4期25卷 23-31页

作者： LI Xishuang LIU Baohua zhao yuexia LI Sanzhong Earth Science College Ocean University of China Qingdao 266003 China Key Laboratory of Marine Sedimentology ＆ Environmental Geology of State Oceanic Administration Qingdao 266061 China First Institute of Oceanography State Oceanic Administration Qingdao 266061 China

Most descriptions and studies about folds have been associated with consolidated strata; fold deformation in loosely-consolidated sediments, however, has been rarely discussed. Since the Pleistocene, tectonic activities have been intensive over the South Huanghai Sea （SHS） shelf, resulting in fold deformation features that are preserved in thick sediment layers. Four types of folds with different geometries have been identified on the basis of an analysis of single - channel seismic profiles from the SHS shelf region：（1） fault-propagation fold; （2） fault-drag fold; （3） transversal bending fold; and （4） multi-action-folding fold. Studies on the geometry and mechanism of the folds indicate that base faults and fault blocks control the folding patterns in loosely-consoli- dated sediments on the SHS shelf and a large quantity of pore water in sediments plays an important role in cansing the deformation of sediment layers. The continuity of deformations of fault-propagation fold and fault-drag fold indicates that there is a genetic relationship between these fold types. The potential of earthquakes induced by fault-propagation folding in the deformation zone should be taken into account in the assessment of the marine engineering geology conditions of the SHS shelf.

关键词： fold loosely-consolidated sediment base fault marine engineering south Huanghai Sea shelf

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Submarine canyons on the north of Chiwei Island:influenced by recent extension of the southern Okinawa Trough

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Acta Oceanologica Sinica 2008年第4期27卷 63-72页

作者： zhao yuexia LIU Baohua LI Xishuang LIU Chenguang WU Jinlong WANG Kuiyang College of Marine Geoscience Ocean University of China Qingdao 266100 China First Institute of Oceanography State Oceanic Administration Qingdao 266061 China Key Laboratory of Marine Sedimentology ＆ Environmental Geology State Oceanic Administration Qingdao 266061 China

Based on new multibeam bathymetric data and about 300 km long single seismic profiles, three topographic units were identified： the canyons, fractural valley and submarine terrace on the north of Chiwei Island where is a structural transition zone between the southern trough and the middle trough. The Chiwei Canyon and the North Chiwei Canyon are two of the largest canyons in the East China Sea （ECS） slope. Topographic features and architectures of them are described. The study shows that both of them are originated along faults. The evolution and spatial distribution of topographic units in the study area are controlled mainly by three groups of faults which were formed and reactive in the recent extensional phase of Okinawa Trough. The Chiwei Canyon was initia- ted during the middle Pleistocene and guided by F4 that is a N--S trending fault on the slope and F1, a large NW--SE trending fault on the trough. The pathway migration from the remnant channel to the present one of Chiwei Canyon is the result of uplift of tilted fault block that is coupled to the recent extension movements of the southern trough. The submarine terrace is detached from the ECS slope by the NEE -trending fault. The North Chiwei Canyon, developing during the late Pleistocene, is guided by FS, a N-S trending fault, diverted and blocked by the submarine terrace.

关键词： submarine canyon topographic feature fault extension movement Okinawa Trough

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Self-contained in situ sediment acoustic measurement system based on hydraulic driving penetration

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High Technology Letters 2011年第3期17卷 311-316页

作者： Kan Guangming Liu Baohua zhao yuexia Li Guanbao Pei Yanliang College of Marine Geosciences Ocean University of China Qingdao 266003 P.R. China Key Laboratory of Marine Sedimentology and Environmental Geology of State Oceanic Administration First Institute of Oceanography State Oceanic Administration Qingdao 266061 P.R. China

A novel self-contained in situ sediment acoustic measurement system based on hydraulic driving penetration is proposed to solve the problem of large disturbances to sediments of the in situ equipments already in existence. By using a hydraulic driving device, the system drives four acoustic probes into sediments at an even speed, and this decreases disturbances to sediments introduced by the penetration of acoustic probes. By means of the special design of the central control unit, the system can work full-automatically and the data are stored self-containedly, and this avoids the requirement of real-time remote controlling from the ship. Its operating water depth, measuring depth and measuring frequency is 500m, 1.0m and 30kHz respectively. A set of in situ sound speeds and attenuation coefficients of sediments are obtained at 40 stations using the system. The results confirm that the data obtained by the in situ sediment acoustic system are accurate and credible. Copyright © by HING TECHNOLOGY LETTERS PRESS.

关键词：液压驱动装置沉积物声学测量系统原位渗透数据存储设备中央控制单元声波探测器

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LUNX基因作为与免疫细胞浸润相关的非小细胞肺癌预后生物标志物

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中国免疫学杂志 2024年第6期40卷 1197-1202页

作者：鲁欣然王宁刘志强赵月霞曹新桥刘晓佳衡水市人民医院衡水053000

目的:研究肺特异性X蛋白(LUNX)基因是否可作为免疫细胞浸润相关的非小细胞肺癌预后生物标志物。方法:选取衡水市人民医院2020年1月至2023年1月期间收治的280例非小细胞肺癌患者,检测其癌组织、癌旁组织LUNX基因表达量,分析LUNX基因与肿... 详细信息

目的:研究肺特异性X蛋白(LUNX)基因是否可作为免疫细胞浸润相关的非小细胞肺癌预后生物标志物。方法:选取衡水市人民医院2020年1月至2023年1月期间收治的280例非小细胞肺癌患者,检测其癌组织、癌旁组织LUNX基因表达量,分析LUNX基因与肿瘤微环境中免疫细胞浸润、预后生存状态的关系。结果:与癌旁组织比较,非小细胞肺癌组织LUNX基因表达量、阳性率升高,且与分化程度、淋巴结转移、肿瘤分期有关(P<0.05)。GEPIA数据库分析显示LUNX基因在其他组织中仅有少量表达或不表达,在LUAD、LUSC中表达升高(P<0.05)。LUNX基因、LUNX基因拷贝数与免疫细胞浸润水平有关(P<0.05)。生存分析显示,LUNX基因高表达与患者生存预后有关(P<0.05)。结论:LUNX基因在非小细胞肺癌组织中特异性表达,影响非小细胞肺癌免疫细胞浸润水平,导致免疫微环境失衡,是引起患者预后死亡的重要机制。因此,可作为评价免疫细胞浸润的预后生物标志物。

关键词：非小细胞肺癌肺特异性X蛋白免疫细胞浸润生物标志物

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Morphology and architecture of the typical erosion-genesis submarine canyons on the East China Sea slope

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Acta Oceanologica Sinica 2009年第6期28卷 42-52页

作者： LIU Baohua zhao yuexia LI Xishuang KAN Guangming PEI Yanliang ZHENG Yanpeng First Institute of Oceanography State Oceanic Administration Qingdao 266061 China Key Laboratory of Marine Sedimentology and Environmental Geology of State Oceanic Administration Qingdao 266061 China

The Yithi submarine canyons, composed of four canyons less than 60 km in length, are located on the narrowest part of the East China Sea （ECS） slope. They extend from the shelf break at 160 m down to water depth of 1 500 m with an average gradient （along the canyon axis） of 3°（〈1 000 m） and 0.7°（〈1 000 m）. The sinuosity of the canyons ranges form 1.02 to 1.14 and their pathways extend radially from the shelf break to the axis of the Okinawa Trough. Structural and evolution pattern of the Yithi canyons are mainly controlled by sediment mass-movements and turbidity current and similar with that of the canyons in Ebro continental slope. The whole canyon system consists of three parts： the canyon, the channel and the fan. Slumps and slides often develop in the upper part of canyon where the water depth is less than 1 000 m, and the turbidities usually developed on the fan. The scale of turbidites becomes smaller and their inner structures become more regular towards the ends of the canyons. Canyon-fans are often associated with small angle progradational reflection. Most canyon-fans and levees were transversely cut by active normal faults with NEE- SWW trending that are coupled to the modern extension of the Okinawa Trough. According to the age of formation of canyon-fans and sediments incised by canyons, we can infer that the Yithi canyons were formed since the middle the Medio-Pleistocene.

关键词： moroholouv architecture uenesis canyon the East China Sea slope

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四川省某地区临床医生科研能力水平现状调查及影响因素分析

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西南医科大学学报 2024年第3期47卷 241-245页

作者：陈鹏甘雪辉赵月霞聂潇雨杨欣雨汤艳西南医科大学儿科学系泸州646000 西南医科大学公共卫生学院实验教学中心泸州646000 西南医科大学临床医学院泸州646000 西南医科大学基础医学院泸州646000 西南医科大学麻醉学系泸州646000 西南医科大学立普社团泸州646000

目的了解四川省某地区临床医生科研能力水平现状,分析可能影响临床医生科研水平的因素。方法采用“问卷星”平台向四川省某地区各级各类医院的临床医生进行问卷调查,收集临床医生的基本信息和科研情况相关资料。结果超过半数的临床医生... 详细信息

目的了解四川省某地区临床医生科研能力水平现状,分析可能影响临床医生科研水平的因素。方法采用“问卷星”平台向四川省某地区各级各类医院的临床医生进行问卷调查,收集临床医生的基本信息和科研情况相关资料。结果超过半数的临床医生近5年内未参与过任何课题(50.2%)和未发表过任何论文(56.7%),其中科研知晓率40.3%,科研实践率33.8%。不同学历、不同级别医疗机构、不同科室和不同专业技术职称的临床医生对科研的知晓情况差异均具有统计学意义(P<0.05)。多因素分析结果:硕士及以上学历与大专及以下学历对比(OR=14.658,95%CI:3.351~64.117)和三级医院与一级医院对比(OR=3.662,95%CI:1.315~10.197)均与临床医生知晓科研有关。不同学历、不同级别医疗机构和科研知晓情况的临床医生在科研实践上的差异有统计学意义(P<0.05)。多因素分析结果:知晓科研(OR=2.529,95%CI:1.163~5.500)与临床医生科研实践有关。结论受调查的四川省某地区临床医生科研水平欠佳,与学历、医院条件等因素有一定影响。

关键词：科研能力临床医生科研成果影响因素现状调查

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ANOMALY INTRUSION DETECTION METHOD USING FOURIER TRANSFORM

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Journal of Electronics(China) 2004年第2期21卷 135-139页

作者： YueBing zhaoyuexia XuZhoujun FuHongjuan MaFengning SchoolofManagement TianjinUniversityTianjin300072 DepartmentofComputerScience TianjinUniversityTianjin300072

A set of discrete points obtained from audit records on a behavior session is processed with Fourier transform. The criterion of selecting Fourier transform coefficients is introduced, and is used to find a unified value from the set of coefficients. This unified value is compared with a threshold to determine whether the session is abnormal. Finally simple test results are reported.

关键词：入侵检测傅里叶变换网络安全行为会话

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基于能量阈值的双参数阈值函数在生理信号降噪中的应用

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兵工学报 2024年第4期45卷 1264-1272页

作者：赵薇卓智海张月霞北京信息科技大学信息与通信工程学院北京100101

针对弱生理信号在采集过程中易被噪声淹没,传统小波去噪算法存在去噪效果差和信号提取失真的问题,根据小波系数的能量分布特点,提出一种改进的小波阈值去噪算法。通过计算各层小波系数的能量来确定阈值,避免阈值计算的不平衡性,同时提... 详细信息

针对弱生理信号在采集过程中易被噪声淹没,传统小波去噪算法存在去噪效果差和信号提取失真的问题,根据小波系数的能量分布特点,提出一种改进的小波阈值去噪算法。通过计算各层小波系数的能量来确定阈值,避免阈值计算的不平衡性,同时提高自适应性和弱信号的保真度;采用一种改进的可调节的双参数阈值函数对小波系数进行处理,在小波系数压缩程度可控的同时可以自由调节阈值函数的变化趋势。实验结果表明:改进的小波阈值去噪算法相较于两种传统去噪算法(经验模态分解算法和滤波器算法)以及12种传统小波阈值和阈值函数组合算法,在信噪比、均方根百分比和均方根误差上都具有明显的优势,并且在实测生理信号中取得了最小的平均相对误差和最小的波动性。

关键词：小波变换能量梯度阈值改进阈值函数生理信号去噪

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CT检查在术前结肠癌及术后结肠癌复发中的临床诊断准确性及影像学特征研究

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当代医学 2022年第26期28卷 87-89页

作者：赵月霞菏泽市定陶区人民医院放射科山东菏泽274100

目的分析CT检查在术前结肠癌及术后结肠癌复发中的临床诊断准确性及影像学特征。方法选取2018年4月至2020年4月本院接诊的80例结肠癌患者作为研究对象,手术前后均实施CT检查,并以术后病理切片为金标准,分析CT术前诊断准确率、复发诊断... 详细信息

目的分析CT检查在术前结肠癌及术后结肠癌复发中的临床诊断准确性及影像学特征。方法选取2018年4月至2020年4月本院接诊的80例结肠癌患者作为研究对象,手术前后均实施CT检查,并以术后病理切片为金标准,分析CT术前诊断准确率、复发诊断准确率及影像学特征。结果术前CT检查检出Ⅰ期16例、Ⅱ期32例、Ⅲ期18例、Ⅳ期11例,诊断准确率分别为94.12%、96.97%、94.74%、100.00%。术后随访1年,CT检查检出Ⅰ期5例、Ⅱ期11例、Ⅲ期6例、Ⅳ期5例,复发诊断准确率分别为100.00%、91.67%、100.00%、100.00%。结肠癌CT影像特征包括结肠壁增厚、结肠管腔狭窄、周围组织器官浸润、远处转移等。结论结肠癌术前诊断、术后复发中实施CT检查诊断准确率均较高,值得临床推广应用。

关键词： CT 术前检查结肠癌术后复发诊断准确性影像学特征

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