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基于方差异质性随机参数模型的汇合行为分析

吉林大学学报（工学版） 2024年第4期54卷 883-889页

作者：邬岚赵乐李根南京林业大学汽车与交通工程学院南京210037

为研究高速公路交织区入口匝道车辆汇入主线的换道行为,基于方差异质性随机参数模型构建了车辆汇入换道模型,先从NGSIM数据集中提取7个在统计上显著且对换道行为有影响的解释变量,然后将其引入方差异质性随机参数模型探索潜在异质性,计... 详细信息

为研究高速公路交织区入口匝道车辆汇入主线的换道行为,基于方差异质性随机参数模型构建了车辆汇入换道模型,先从NGSIM数据集中提取7个在统计上显著且对换道行为有影响的解释变量,然后将其引入方差异质性随机参数模型探索潜在异质性,计算各变量平均边际效应量化对换道行为的影响,最后提出了“个体样本精度”指标对模型进行比较。研究结果表明:汇入车辆与目标车道领车的车头间距、目标车道领车宽度、辅助车道领车速度对换道行为产生了显著的影响,且汇入车辆在辅助车道上的纵向位置显著影响汇入车辆与目标车道领车的车头间距,方差异质性随机参数模型比未考虑方差异质性的随机参数模型和二元Logit模型具有更高的拟合优度和模型精度,能够更好地解释车辆汇入行为中的潜在异质性。本文的研究成果可应用于自动驾驶辅助系统和交通流仿真软件中,对阐明车道变换行为的机理有一定的参考价值。

关键词：交通运输安全工程方差异质性随机参数模型汇合行为高速公路交织区

Association of preoperative antiviral treatment with incidences of post-hepatectomy liver failure in hepatitis B virus-related hepatocellular carcinoma

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World journal of Gastrointestinal Surgery 2024年第7期16卷 2106-2118页

作者： Xiao Wang Zhao-Yi Lin You Zhou Qin Zhong Zong-Ren Li Xi-Xiang Lin Ming-gen Hu Kun-Lun He Medical Big Data Research Center Chinese PLA General HospitalBeijing 100853China Medical School of Chinese PLA Chinese PLA General HospitalBeijing 100853China Department of Hepatobiliary Surgery Chinese PLA 970th HospitalYantai 264001Shandong ProvinceChina Faculty of Hepato-Pancreato-Biliary Surgery The First Medical Center of Chinese PLA General HospitalBeijing 100853China School of Medicine Nankai UniversityTianjin 300071China

BACKGROUND Post-hepatectomy liver failure(PHLF)is a common consequence of radical partial hepatectomy in hepatocellular carcinoma(HCC).AIMS To investigate the relationship between preoperative antiviral therapy and PHLF,as well as assess the potential efficacy of hepatitis B virus(HBV)DNA level in predicting *** A retrospective study was performed involving 1301 HCC patients with HBV who underwent radical *** operating characteristic(ROC)analysis was used to assess the capacity of HBV DNA to predict PHLF and establish the optimal cutoff value for subsequent *** regression analyses were performed to assess the independent risk factors of *** increase in the area under the ROC curve,categorical net reclassification improvement(NRI),and integrated discrimination improvement(IDI)were used to quantify the efficacy of HBV DNA level for predicting *** P<0.05 was considered statistically *** Logistic regression analyses showed that preoperative antiviral therapy was independently associated with a reduced risk of PHLF(P<0.05).HBV DNA level with an optimal cutoff value of 269 IU/mL(P<0.001)was an independent risk factor of *** the reference models by adding the variable of HBV DNA level had an improvement in area under the curve,categorical NRI,and IDI,particularly for the fibrosis-4 model,with values of 0.729(95%CI:0.705-0.754),1.382(95%CI:1.341-1.423),and 0.112(95%CI:0.110-0.114),*** the above findings were statistically *** In summary,preoperative antiviral treatment can reduce the incidence of PHLF,whereas an increased preoperative HBV DNA level has a correlative relationship with an increased susceptibility to PHLF.

关键词： Hepatocellular carcinoma Hepatitis B virus Preoperative antiviral treatment Liver resection Post-hepatectomy liver failure

Preliminary safety analysis for heavy water-moderated molten salt reactor

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Nuclear Science and Techniques 2024年第6期35卷 202-217页

作者： Gao-Ang Wen jian-Hui Wu Chun-Yan Zou Xiang-Zhou Cai jin-gen Chen Man Bao College of Science University of Shanghai for Science and TechnologyShanghai 200093China Shanghai Institute of Applied Physics Chinese Academy of SciencesShanghai 201800China University of Chinese Academy of Sciences Beijing 100049China

The heavy water-moderated molten salt reactor(HWMSR)is a newly proposed reactor concept,in which heavy water is adopted as the moderator and molten salt dissolved with fissile and fertile elements is used as the *** arising from graphite in traditional molten salt reactors,including the positive temperature coefficient and management of highly radio-active spent graphite waste,can be addressed using the *** now,research on the HWMSR has been centered on the core design and nuclear fuel cycle to explore the viability of the HWMSR and its advantages in fuel ***,the core safety of the HWMSR has not been extensively ***,we evaluate typical accidents in a small modular HWMSR,including fuel salt inlet temperature overcooling and overheating accidents,fuel salt inlet flow rate decrease,heavy water inlet temperature overcooling accidents,and heavy water inlet mass flow rate decrease accidents,based on a neutronics and thermal-hydraulics coupled *** results demonstrated that the core maintained safety during the investigated accidents.

关键词： Heavy water-moderated molten salt reactor Neutronics and thermal-hydraulics coupling Transient analysis Accident analysis

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空间视角下公德教育的误区与出路

清华大学教育研究 2024年第3期45卷 96-103页

作者：严从根杭州师范大学经亨颐教育学院浙江杭州311121

公德是公共空间的道德要求,因此,从空间特别是公共空间的角度,分析公德教育就显得非常有意义和价值。清朝末年开始,中国就开始重视公德教育,但是很多学校都采用“私德外推”的方式实施公德教育。“私德外推”式的公德教育不仅不能有效... 详细信息

公德是公共空间的道德要求,因此,从空间特别是公共空间的角度,分析公德教育就显得非常有意义和价值。清朝末年开始,中国就开始重视公德教育,但是很多学校都采用“私德外推”的方式实施公德教育。“私德外推”式的公德教育不仅不能有效地让私德成为公德,还在“人己同类”和“推己及人”中让人进一步成为利己主义者,让社会进一步陷入到差序格局中。为了有效实施公德教育,要按照公共空间意识萌发的规律,在“活私开公”中实施公德教育。为了完整地实施公德教育,要按照公共空间意识生成的规律,既要重视消极的公德教育,也要重视积极的公德教育。当然,无论实施何种公德教育,都要拒绝采用“私德外推”的实施方式。

关键词：空间公共空间意识公德公德教育

从一大到二十大:党章修改视角下中共宣传工作的制度建设

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兰州大学学报（社会科学版） 2024年第2期52卷 131-139页

作者：邓绍根中国人民大学新闻与社会发展研究中心北京100871

《中国共产党章程》不仅是立党之本,而且是党的总章程和党的根本大法。党的全国代表大会是党的最高领导机关,总是根据理论创新和实践创新的需要对党章进行修改。宣传工作是党的一项极端重要的工作,是中国共产党领导人民不断夺取革命、... 详细信息

《中国共产党章程》不仅是立党之本,而且是党的总章程和党的根本大法。党的全国代表大会是党的最高领导机关,总是根据理论创新和实践创新的需要对党章进行修改。宣传工作是党的一项极端重要的工作,是中国共产党领导人民不断夺取革命、建设、改革胜利的优良传统和政治优势。中国共产党百余年来的光辉历程,既是其党章修改完善的历史,又是其宣传工作制度建设的发展史。从党的一大到二十大,中国共产党不断将理论、实践、制度以及其他各方面的创新成果载入党章;从党章修改视角看中共宣传工作制度建设,中国共产党宣传工作始终坚持党的领导,坚持党管宣传、党管意识形态、党管媒体,不断开拓创新,积极推动着党的宣传工作制度建设逐步展开、曲折前行、丰富发展、创新完善等四个历史阶段,助力创造了中国革命、建设和改革的伟大成就,推进了中华民族伟大复兴历史进程。

关键词：中国共产党党章宣传工作党的二十大精神

A seismic elastic moduli module for the measurements of low-frequency wave dispersion and attenuation of fluid-saturated rocks under different pressures

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Petroleum Science 2024年第1期21卷 162-181页

作者： Yan-Xiao He Shang-Xu Wang gen-Yang Tang Chao Sun Hong-Bing Li San-Yi Yuan Xian Wei Li-Deng Gan Xiao-Feng Dai Qiang Ge Peng-Peng Wei Hui-Qing Zhang National Key Laboratory of Petroleum Resources and Engineering CNPC Key Lab of Geophysical ExplorationCollege of GeophysicsChina University of Petroleum(Beijing)Beijing102249China School of Resources and Geosciences China University of Mining and TechnologyXuzhou221116JiangsuChina Research Institute of Petroleum Exploration and Development CNPCBeijing100083China Beijing Vocational College of Labour and Social Security Beijing100029China PetroChina Dagang Oilfield Exploration and Development Research Institute CNPCTianjin300280China

Knowledge about the seismic elastic modulus dispersion,and associated attenuation,in fluid-saturated rocks is essential for better interpretation of seismic observations taken as part of hydrocarbon identification and time-lapse seismic surveillance of both conventional and unconventional reservoir and overburden performances.A Seismic Elastic Moduli Module has been developed,based on the forced-oscillations method,to experimentally investigate the frequency dependence of Young's modulus and Poisson's ratio,as well as the inferred attenuation,of cylindrical samples under different confining pressure *** with three standard samples showed that the measured elastic moduli were consistent with the published data,indicating that the new apparatus can operate reliably over a wide frequency range of f∈[1-2000,10^(6)]*** Young's modulus and Poisson's ratio of the shale and the tight sandstone samples were measured under axial stress oscillations to assess the frequency-and pressure-dependent *** dry condition,both samples appear to be nearly frequency independent,with weak pressure dependence for the shale and significant pressure dependence for the *** particular,it was found that the tight sandstone with complex pore microstructure exhibited apparent dispersion and attenuation under brine or glycerin saturation conditions,the levels of which were strongly influenced by the increased effective *** addition,the measured Young's moduli results were compared with the theoretical predictions from a scaled poroelastic model with a reasonably good agreement,revealing that the combined fluid flow mechanisms at both mesoscopic and microscopic scales possibly responsible for the measured dispersion.

关键词： Low-frequency measurements Dispersion and attenuation Rock physics Fluid flow

Through-polymer,via technology-enabled,flexible,lightweight,and integrated devices for implantable neural probes

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Microsystems & Nanoengineering 2024年第2期10卷 279-291页

作者： Cunkai Zhou Ye Tian gen Li Yifei Ye Lusha Gao jiazhi Li Ziwei Liu Haoyang Su Yunxiao Lu Meng Li Zhitao Zhou Xiaoling Wei Lunming Qin Tiger H.Tao Liuyang Sun College of Electronics and Information Engineering Shanghai University of Electric PowerShanghaiChina 2020 X-Lab Shanghai Institute of Microsystem and Information TechnologyChinese Academy of SciencesShanghaiChina School of Graduate Study University of Chinese Academy of SciencesBeijingChina State Key Laboratory of Transducer Technology Shanghai Institute of Microsystem and Information TechnologyChinese Academy of SciencesShanghaiChina Center of Materials Science and Optoelectronics Engineering University of Chinese Academy of SciencesBeijingChina School of Physical Science and Technology ShanghaiTech UniversityShanghaiChina Center for Excellence in Brain Science and Intelligence Technology Chinese Academy of SciencesShanghaiChina Neuroxess Co. Ltd.(Jiangxi)NanchangJiangxiChina Guangdong Institute of Intelligence Science and Technology HengqinZhuhaiGuangdongChina Tianqiao and Chrissy Chen Institute for Translational Research ShanghaiChina

In implantable electrophysiological recording systems,the headstage typically comprises neural probes that interface with brain tissue and integrated circuit chips for signal *** advancements in MEMS and CMOS technology have significantly improved these components,their interconnection still relies on conventional printed circuit boards and sophisticated *** conventional approach adds considerable weight and volume to the package,especially for high channel count *** address this issue,we developed a through-polymer via(TPV)method inspired by the through-silicon via(TSV)technique in advanced three-dimensional *** innovation enables the vertical integration of flexible probes,amplifier chips,and PCBs,realizing a flexible,lightweight,and integrated device(FLID).The total weight of the FLIDis only 25%that of its conventional counterparts relying on adapters,which significantly increased the activity levels of animals wearing the FLIDs to nearly match the levels of control animals without ***,by incorporating a platinum-iridium alloy as the top layer material for electrical contact,the FLID realizes exceptional electrical performance,enabling in vivo measurements of both local field potentials and individual neuron action *** findings showcase the potential of FLIDs in scaling up implantable neural recording systems and mark a significant advancement in the field of neurotechnology.

关键词： alloy neural recording

Experimental full-duplex amplify-and-forward relay scheme for OFDM with power gain control

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journal of Information and Intelligence 2024年第5期2卷 375-387页

作者： Pu Yang Xiang-gen Xia Qingyue Qu Yi Liu The State Key Laboratory of Integrated Service Network Xidian UniversityXian 710071China The Department of Electrical and Computer Engineering University of DelawareNewark DE 19716USA

The fundamental challenges for full-duplex(FD)relay networks are the self-interference cancellation(SIC)and the cooperative transmission design at the *** paper presents a practical amplify-and-forward(AF)FD one-way relay scheme for orthogonal frequency division multiplexing(OFDM)transmission with multi-domain *** is found that the residual self-interference(SI)signals at the relay can be regarded as an equivalent multipath *** effects of the residual sI at the relay are incorporated into the equivalent end-to-end channel model,and the inter-block interference can be removed at the destination by using cyclic prefix(CP)*** on the equivalent multipath model,we present a solution for optimizing the amplification factor on the performance of signal-to-interference-plus-noise ratio(SINR)when the equivalent multipath length is longer than the ***,a practical one way FD relay network with 3 nodes is built and *** simulation and measured results verify the superior performance of the proposed scheme.

关键词： Full-duplex Amplify-and-forward Gain control Self-interference cancellation

Depositional model of the Member Deng-2 marginal microbial mound-bank complex of the Dengying Formation in the southwestern Sichuan Basin, SW China: Implications for the Ediacaran microbial mound construction and hydrocarbon exploration

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Petroleum Science 2024年第2期21卷 806-822页

作者： jin-Min Song Xin jin Zhong Luo Shu-gen Liu Shao-Bo Liu Xing-Zhi Ma Zhi-Wu Li Xue-Song Lu Ling-Li Zhao Ke-Ran Li jia-Xin Ren Li-Zhou Tian Hao-Shuang Deng State Key Laboratory of Oil and Gas Reservoir Geology and Exploitation Chengdu University of TechnologyChengdu610059SichuanChina PetroChina Research Institute of Petroleum Exploration and Development Beijing100083China Xihua University Chengdu610039SichuanChina

Recent advances in hydrocarbon exploration have been made in the Member Deng-2 marginal microbial mound-bank complex reservoirs of the Dengying Formation in the western Sichuan Basin, SW China,where the depositional process is regarded confusing. The microfacies, construction types, and depositional model of the Member Deng-2 marginal microbial mound-bank complex have been investigated using unmanned aerial vehicle photography, outcrop section investigation, thin section identification,and seismic reflections in the southwestern Sichuan Basin. The microbialite lithologic textures in this region include thrombolite, dendrolite, stromatolite, fenestral stromatolite, spongiostromata stone,oncolite, aggregated grainstone, and botryoidal grapestone. Based on the comprehensive analysis of“depositional fabrics-lithology-microfacies”, an association between a fore mound, mound framework,and back mound subfacies has been proposed based on water depth, current direction, energy level and lithologic assemblages. The microfacies of the mound base, mound core, mound flank, mound cap, and mound flat could be recognized among the mound framework subfacies. Two construction types of marginal microbial mound-bank complex have been determined based on deposition location, mound scale, migration direction, and sedimentary facies association. Type jinkouhe microbial mound constructions(TjMMCs) develop along the windward margin owing to their proximity to the seaward subfacies fore mound, with a northeastwardly migrated microbial mound on top of the mud mound,exhibiting the characteristics of large-sized mounds and small-sized banks in the surrounding area. Type E'bian microbial mound constructions(TEMMCs) primarily occur on the leeward margin, resulting from the presence of onshore back mound subfacies, with the smaller southwestward migrated microbial mounds existing on a thicker microbial flat. The platform margin microbial mound depositional model can be correlated with certain late

关键词： Sichuan Basin The Member Deng-2 Marginal microbial mound-bank complex Depositional model Exploration implications