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对数正态分布场合下恒定应力加速寿命中含有缺失的定数截尾样本的AMLE(英文)

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上海师范大学学报（自然科学版） 2004年第3期33卷 1-11页

作者：费鹤良赵培东上海师范大学数理信息学院上海200234 上海交通大学电子信息与电气工程学院上海200030

导出了对数正态分布场合下恒定应力加速寿命中含有缺失定数截尾样本的近似极大似然估计(AMLE),得到了分布参数和加速方程中未知参数的AMLE的显式解,便于实际计算和工程应用,数值模拟的结果表明本方法可行.

关键词：正态分布对数正态分布极大似然估计近似极大似然估计

Efficient and Stable Photoassisted Lithium-Ion Battery Enabled by Photocathode with Synergistically Boosted Carriers Dynamics

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NANO-MICRO LETTERS 2025年第1期17卷 1-15页

作者： Ma, Zelin Wang, Shiyao Ma, Zhuangzhuang Li, Juan zhao, Luomeng Li, Zhihuan Wang, Shiyuan Shuang, Yazhou Wang, Jiulong Wang, Fang Xia, Weiwei Jian, Jie he, Yibo Wang, Junjie Guo, Pengfei Wang, Hongqiang Northwestern Polytech Univ Ctr Nano Energy Mat State Key Lab Solidificat Proc Sch Mat Sci & Engn Xian 710072 Peoples R China NPU Shaanxi Joint Lab Graphene Xian 710072 Peoples R China Northwestern Polytech Univ Sch Mat Sci State Key Lab Solidificat Proc Xian 710072 Peoples R China Northwestern Polytech Univ Engn Dept Xian 710072 Peoples R China Northwestern Polytech Univ Ctr Adv Lubricat & Seal Mat Sch Mat Sci & Engn State Key Lab Solidificat Proc Xian 710072 Peoples R China Northwestern Polytech Univ Shenzhen Res & Dev Inst Shenzhen 518063 Peoples R China Shaanxi Normal Univ Key Lab Appl Surface & Colloid Chem Shaanxi Engn Lab Adv Energy Technol Shaanxi Key Lab Adv Energy DevicesSch Mat Sci & E Xian 710119 Peoples R China

Efficient and stable photocathodes with versatility are of significance in photoassisted lithium-ion batteries (PLIBs), while there is always a request on fast carrier transport in electrochemical active photocathodes. Present work proposes a general approach of creating bulk heterojunction to boost the carrier mobility of photocathodes by simply laser assisted embedding of plasmonic nanocrystals. When employed in PLIBs, it was found effective for synchronously enhanced photocharge separation and transport in light charging process. Additionally, experimental photon spectroscopy, finite difference time domain method simulation and theoretical analyses demonstrate that the improved carrier dynamics are driven by the plasmonic-induced hot electron injection from metal to TiO2, as well as the enhanced conductivity in TiO2 matrix due to the formation of oxygen vacancies after Schottky contact. Benefiting from these merits, several benchmark values in performance of TiO2-based photocathode applied in PLIBs are set, including the capacity of 276 mAh g(-1 ) at 0.2 A g(-1 )under illumination, photoconversion efficiency of 1.276% at 3 A g(-1 ), less capacity and Columbic efficiency loss even through 200 cycles. These results exemplify the potential of the bulk heterojunction strategy in developing highly efficient and stable photoassisted energy storage systems.

关键词： Photoassisted lithium-ion batteries Bulk heterojunction Carrier dynamics TiO2 nanofiber Plasmonic metal nanocrystals

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综合疗法治疗慢性前列腺炎

国际泌尿系统杂志 2013年第5期33卷 610-613页

作者：施东辉杨祖佑何兆飞吴红华苏州市吴中人民医院泌尿外科江苏210000

目的研究应用综合治疗以及辅助治疗慢性前列腺炎的临床疗效.方法将326例慢性前列腺炎患者分成3组：综合治疗组（抗生素治疗,心理治疗、局部治疗、生物反馈治疗,中药植物类和α受体阻滞剂治疗相结合）、西医治疗组（α受体阻滞剂＋抗... 详细信息

目的研究应用综合治疗以及辅助治疗慢性前列腺炎的临床疗效.方法将326例慢性前列腺炎患者分成3组：综合治疗组（抗生素治疗,心理治疗、局部治疗、生物反馈治疗,中药植物类和α受体阻滞剂治疗相结合）、西医治疗组（α受体阻滞剂＋抗生素）、辅助治疗组（心理治疗、局部治疗、生物反馈治疗,中药植物类）.分别治疗并随访12周,并对各组疗效和症状改善程度进行研究,分析评估.结果综合治疗组总有效率为82.1％,西医治疗组为57.3％,辅助治疗组为43.6％,综合治疗组与两对照组之间P值均小于0.01,有显著的统计学差异.结论应用综合疗法治疗慢性前列腺炎临床效果满意、其中辅助治疗在前列腺炎治疗中有着重要的不可或缺的作用.

关键词：前列腺炎慢性病

Eco-geological environment quality assessment based on multi-source data of the mining city in red soil hilly region, China

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Journal of Mountain Science 2022年第1期19卷 253-275页

作者： zhao fei-fei he Man-chao WANG Yun-tao TAO Zhi-gang LI Chun State Key Laboratory for GeoMechanics and Deep Underground Engineering China University of Mining and Technology(Beijing)Beijing 10083China School of Mechanics and Civil Engineering China University of Mining and Technology(Beijing)Beijing 10083China Beijing Institute of Geology Beijing 100010China Key Laboratory of Geotechnical and Underground Engineering Tongji UniversityMinistry of EducationShanghai 200082China Beijing Baodiyilian Geological Exploration Engineering Technology Co.LTD Beijing 100010China

High-intensity and large-scale resource development seriously threatens the fragile ecological environment in the red soil hilly region in southern China. This paper analyzes the eco-geological environmental problems and factors affecting Ganzhou, a mining city in the red soil hilly region,based on field survey and literature. The ecogeological environment quality(EGEQ) assessment system, which covered 11 indicators in physical geography, mining development, geological hazards,as well as water and soil pollution, was established through multi-source data utilization such as remote sensing images, DEM(Digital Elevation Model), field survey and on-site monitoring data. The comprehensive weight of each indicator was calculated through the Analytic Hierarchy Process(AHP) and entropy method. The eco-geological environment assessment map was developed by calculating the EGEQ value through the linear weighted method. The assessment results show that the EGEQ was classified into I-V grades from excellent to worse, among which, EGEQ of I-II accounted for 29.88%, EGEQ of III accounted for 32.35% and EGEQ of IV-V accounted for 37.77%;the overall EGEQ of Ganzhou was moderate. The assessment system utilized in this research provides scientific and accurate results, which in turn enable the proposal of some tangible protection suggestions.

关键词： Eco-geological environment assessment Mining city Red soil hilly region AHP Entropy method

Establishment and verification of theoretical model for underwater light-sheet Scheimpflug LiDAR system

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Science China Technological Sciences 2025年第1期 54-61页

作者： fei FENG Guojun WU Bo LIU Xu zhao Yafeng WU Jinghan XU Xi'an Institute of Optics and Precision Mechanics Chinese Academy of Sciences University of Chinese Academy of Sciences

The Scheimpflug imaging in the air can increase the depth-of-view and has been well studied with an accurate Scheimpflug imaging model. However, there is no corresponding underwater light-sheet Scheimpflug(ULSS) imaging *** a result, imaging accuracy cannot be ensured in the design phase, which mainly relies on the post-calibration. In this paper,the ULSS imaging model is firstly established, which gives the relationship between the pixel number and target distance, as well as that between the target distance and range resolution. A new experimental bracket and an underwater Scheimflug imaging lens were designed and developed. Based on this new device, several experiments were carried out in a pool to study the range resolution of this ULSS LiDAR, by which the correctness of the imaging model was verified. It also shows that the newly designed ULSS LiDAR can achieve a millimeter-level resolution within 8 m.

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The effect of applied potential on stress corrosion cracking of X80 pipeline steel in acidic soil containing sulfate-reducing bacteria

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Science China(Technological Sciences) 2023年第10期66卷 2837-2849页

作者： he JianYu XIE fei zhao Yang GUO DaCheng WANG Dan LI JunChi College of Petroleum Engineering Liaoning Petrochemical UniversityFushun 113001China Key Laboratory of Oil and Gas Storage and Transportation Technology in Liaoning Province Fushun 113001China Liaohe Oilfield Oil and Gas Gathering and Transmission Company Panjin 124000China Northeast Natural Gas Sales Center Sinopec Natural Gas BranchShenyang 110100China

Electrochemical experiments,slow strain rate tensile testing(SSRT),and scanning electron microscopy were used to investigate the effect of various applied potentials on the stress corrosion cracking(SCC)of X80 pipeline steel in acidic soil containing sulfate-reducing bacteria(SRB).The results demonstrated that when the anodic potential was applied,X80 steel exhibited sensitivity to SCC,which was attributed to anodic *** SCC sensitivity initially decreased,but then increased with a negative shift in the applied ***-1200 mV,SCC was the most sensitive,which corresponded to the substantial cathodic polarisation and toxic impact of SRB,which increased the risk of hydrogen ***-850 mV,the SCC sensitivity was the lowest because cathodic polarisation suppressed anodic *** experimental results can contribute to the prevention and management of SCC in operational pipelines.

关键词： applied potential acid soil SCC sulfate-reducing bacteria

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晚熟花椰菜品种‘福花90天’栽培技术

东南园艺 2017年第1期5卷 13-15页

作者：钟开勤郑衡林翮飞朱朝辉陈文辉福建省福州市蔬菜科学研究所福建福州350111

‘福花90天’花椰菜是以自交不亲和系‘TW80-2’为母本与自交系‘1001’配制而成的晚熟品种,该品种为秋冬季品种,生长势强、结球性好、花球疏松、高产、较抗软腐病、黑腐病和菌核病。本文主要总结其高产优质栽培技术。

关键词：花椰菜福花90天晚熟品种栽培技术

Gradient maturation experiment on hairs implies taphonomic changes in fossil hairs

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Science China Earth Sciences 2025年第1期 62-73页

作者： Xin LI Yibo ZHOU Tao zhao Xingjian he Yanhong PAN State Key Laboratory for Mineral Deposits Research Center for Critical Earth Material Cycling Centre for Research and Education on Biological Evolution and Environment and Frontiers Science School of Earth Sciences and Engineering Nanjing University Institute of Palaeontology Yunnan Key Laboratory of Earth System Science Yunnan Key Laboratory for PalaeobiologyYunnan University

Mammalian hair, as a key feature related to endothermy, physical protection, and camouflage, has a long geohistorical record that dates back even to the Mesozoic. However, the limited information on the taphonomy of hair hinders the understanding of its evolutionary significance in deep time. To address this, we conducted taphonomic experiments to simulate the transformation process of black hair. The changes in the morphological structure, microscopic characteristics, and chemical composition of hair during the simulated fossilization process were documented by scanning electron microscopy, Fourier transform infrared(FTIR) spectroscopy, and Raman spectroscopy. Our results revealed that damage to the morphology of hair began at a mild temperature(150–175°C), and hair transformed into a fluid-like mass at a relatively high temperature(200°C). In addition, the morphological structure of melanosomes had relatively greater preservation potential than keratins did, and the microscopic features of melanosomes were persistently stable. The Raman and FTIR spectra indicated that the characteristic melanin and keratin peaks changed as the temperature increased. Although the chemical signals were not lost completely, the variations in the characteristic amide bands in the FTIR spectra indicate that the keratins severely degraded at high temperatures(>200°C), whereas the characteristic melanin bands in the Raman spectra suggested that melanin signals were still recognizable, even at high temperatures(>200°C). These results were confirmed by principal component analysis(PCA) and principal component analysis linear discriminant analysis(PCA–LDA). In addition, the Raman signals of all the samples in the simulated experiments were distinguished from the signals of common geological carbonaceous materials(humic acid), which suggested that Raman spectroscopy can be used to detect melanin in fossils.

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基于多目标优化的工作量感知即时软件缺陷预测特征构建方法

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计算机科学 2025年第1期52卷 232-241页

作者：赵晨阳刘磊江贺大连理工大学软件学院辽宁大连116600

即时软件缺陷预测(JIT-SDP)是一种针对代码变更的软件缺陷预测技术,具有细粒度、即时性和可追溯性的优点。工作量感知JIT-SDP进一步考虑代码检查工作量,旨在以有限的工作量识别更多的缺陷变更。尽管目前已有不少工作量感知JIT-SDP,但这... 详细信息

即时软件缺陷预测(JIT-SDP)是一种针对代码变更的软件缺陷预测技术,具有细粒度、即时性和可追溯性的优点。工作量感知JIT-SDP进一步考虑代码检查工作量,旨在以有限的工作量识别更多的缺陷变更。尽管目前已有不少工作量感知JIT-SDP,但这些方法大多只针对分类模型算法进行优化。为提升工作量感知JIT-SDP的性能表现与泛用性,首次从特征工程方面入手,提出了一种工作量感知场景下的进化特征构建方法EEF。首先,EEF方法通过遗传编程树来表示特征,从分类性能与工作量感知性能两个角度出发,通过基于多目标优化的进化特征构建方法来获取新的特征转换方法;之后,通过得到的特征转换方法来构建新的特征集,并基于新的特征集训练与测试分类模型。为了验证EEF方法的有效性,在6个开源项目上,通过3个不同评估方案进行了实验研究,结果证明EEF方法可以提升分类模型在工作量感知场景下的性能,并优于其他特征工程方法,而且在保证特征选取多样性的前提下,基于单一模型的EEF方法同样可以提升其他模型的性能。

关键词：即时缺陷预测工作量感知进化特征构建多目标优化特征工程