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| 1 | Orbital Forcing and Sea-Level Changes in the Earliest Triassic of the Meishan Section,South China显示文摘The Earliest Triassic Yinkeng Formation is exposed at the well-known Meishan Section,South China,which contains the Global Stratotype of Section and Point(GSSP)for the PermianTriassic boundary(PTB).It records centimeter-scale rhythmic alternations comprised mainly by marlstone and limestone.Seven types of couplet embedded in five types of bundles were recognized based on occurrence and thickness of the lithologic units,suggesting that their formation was controlled by cyclic processes.The various orders of cycles observed correlate well with other Early Triassic counterparts recorded in South China.Here,we present new cyclostratigraphic results based on lithologic thickness and relative carbonate content of the Yinkeng Formation.Power spectra of carbonate content show that the ratio of major wavelengths recognized throughout the formation is similar to that of the 100kyr short eccentricity,33 kyr obliquity,and 21 kyr precession cycles,indicating that astronomical signals are recorded in the Earliest Triassic rhythmic succession.Consistence between pronounced lithologic rhythmicity and sea-level changes obtained from Fischer plots indicates that high-frequency climatic cycles may have driven sea-level changes immediately after the PTB mass extinction.Furthermore,the 4th-order sea-level changes interpreted from the sedimentary record match well with 100kyr short eccentricity component of carbonate content,reflecting that the 100 kyr short eccentricityinduced climate changes may have likely controlled the deposition of 4th-order sequences recognized from rhythmic successions. | Shifeng Tian Zhong-Qiang Chen Chunju Huang | 2014 | Journal of Earth Science2014，25，1： | 6 |
| 2 | Recent Progress on Smart Fiber and Textile Based Wearable Strain Sensors:Materials,Fabrications and Applications显示文摘With the rapid development of smart products,fexible and stretchable smart wearable electronic devices gradually play an important role,and they are considered as the pioneers of the new generation of fexible electronic devices.Among these intelligent devices,fexible and stretchable strain sensors have been widely studied for their good fexibility,high sensitivity,high repeatability and huge potential for application in personal healthcare and motion detection.Moreover,unlike traditional rigid bulky sensors,the high-performance fexible strain sensors are lightweight portable devices with excellent mechanical and electrical performance,which can meet personalized needs and become more popular.Herein,the research progress of fexible strain sensors in recent years are reviewed,which mainly introducing the sensing principles and key parameters of strain sensors,commonly used conductive materials and fexible substrates and common preparation methods,and fnally proposes the future application and prospects of strain sensors. | Xuhua Liu Jinlei Miao Qiang Fan Wenxiao Zhang Xingwei Zuo Mingwei Tian Shifeng Zhu Xueji Zhang Lijun Qu | 2022 | Advanced Fiber Materials2022，4，3： | 3 |
| 3 | Revisiting the late Permian coal from the Huayinshang, Sichuan, southwestern China: Enrichment and occurrence modes of minerals and trace elements显示文摘 | Shifeng Dai Yangbing Luo Vladimir V. Seredin Colin R. Ward James C. Hower Lei Zhao Shande Liu Cunliang Zhao Heming Tian Jianhua Zou | 2013 | International Journal of Coal Geology2013，，： | 3 |
| 4 | Astronomical Dating of the Middle Miocene Hanjiang Formation in the Pearl River Mouth Basin,South China Sea显示文摘Langhian 年龄的 Hanjiang 形成(中间中新世) 在珍珠河嘴盆(PRMB ) ,华南海由三角形的 siliciclastic 和浅海的架组成焦化有韵律的引申,它形成盆的潜在的水库之一。在盆为勘探的烃和探索改进 stratigraphic 决定,现在的学习承担光谱高分辨率的自然 gamma 光线(NGR ) 的分析决定主导的频率部件并且测试 Milankovitch 轨道的信号是否在有韵律的继任被记录的记载得好的记录。分析结果显示领前(19 ka 和 23 ka ) 的轨道的周期,斜(41 ka ) ,和怪癖(100 ka 和 405 ka ) ,它在有韵律的引申继任为天文驾驶的气候变化提供充分证据。在 biochronological 限制以内,高分辨率的天体的 timescale 通过到地球的轨道的最近的天文计算的变化的 NGR 记录的天体的调节被构造。天文调节的 timescale 能被使用为在整个时期认出的地质的事件和 bioevents 计算天体的年龄。分别地,有孔虫目动物 Globorotalia peripheroronda 和 Globigerinoides sicanus 的第一 downhole 出现在 14.546 妈和 14.919 妈是过时的它与在华南海的更早的估计稍微不同。什么时候与全球海平面的变化相比制图,为基于微化石分布认出的序列的天体的估计有一样的结束时间但是不同开始时间。这可能由于在推迟了全球海平面的升起的效果的海面升降的上升附加的本地或地区性的构造活动。天体的 timescale 也为 Langhian 阶段解决 depositional 进化历史(中间中新世) 与一个变化,那强烈类似于从 13.65 妈预言到 15.97 妈的地球的轨道的怪癖的。我们推断在 Hanjiang 形成控制沉积率的可变性的主要因素与 405-ka-period 怪癖有关。 | TIAN Shifeng CHEN Zhongqiang GAO Changhai ZHA Ming | 2013 | Acta Geologica Sinica(English Edition)2013，87，1： | 2 |
| 5 | Active disturbance rejected predictive functional control for space vehicles with RCS显示文摘Reaction control system(RCS) is a powerful and efficient actuator for space vehicles attitude control, which is typically characterized as a pulsed unilateral effector only with two states(off/on). Along with inevitable internal uncertainties and external disturbances in practice, this inherent nonlinear character always hinders space vehicles autopilot from pursuing precise tracking performance. Compared to most of pre-existing methodologies that passively suppress the uncertainties and disturbances, a design based on predictive functional control(PFC) and generalized extended state observer(GESO) is firstly proposed for three-axis RCS control system to actively reject that with no requirement for additional fuel consumption. To obtain a high fidelity predictive model on which the performance of PFC greatly depends, the nonlinear coupling multiple-input multiple-output(MIMO) flight dynamics model is parameterized as a state-dependent coefficient form. And based on that, a MIMO PFC algorithm in state space domain for a plant of arbitrary orders is deduced in this paper.The internal uncertainties and external disturbances are lumped as a total disturbance, which is estimated and cancelled timely to further enhance the robustness. The continuous control command synthesised by above controller-rejector tandem is finally modulated by pulse width pulse frequency modulator(PWPF) to on-off signals to meet RCS requirement. The robustness and feasibility of the proposed design are validated by a series of performance comparison simulations with some prominent methods in the presence of significant perturbations and disturbances, as well as measurement noise. | TIAN Jiayi ZHANG Shifeng | 2018 | Journal of Systems Engineering and Electronics2018，29，5： | 2 |
| 6 | Mineralogical andcompositional characteristics of Late Permian coals from an area ofhigh lung cancer rate in Xuan Wei,Yunnan,China :occurrence andorigin of quartz and chamosite显示文摘 | DAI Shifeng TIAN Linwei CHOU Chenlin | 2008 | International Journal of CoalGeology2008，76，4： | 1 |
| 7 | Mineralogical and compositional characteristics of Late Permian coals from an area of high lung cancer rate in Xuan Wei, Yunnan, China: Occurrence and origin of quartz and chamosite显示文摘 | Shifeng Dai Linwei Tian Chen-Lin Chou Yiping Zhou Mingquan Zhang Lei Zhao Jumin Wang Zong Yang Hongzhi Cao Deyi Ren | 2008 | International Journal of Coal Geology2008，，4： | 1 |
| 8 | Elemental and mineralogical anomalies in the coal-hosted Ge ore deposit of Lincang, Yunnan, southwestern China: Key role of N 2 –CO 2 -mixed hydrothermal solutions显示文摘 | Shifeng Dai Peipei Wang Colin R. Ward Yuegang Tang Xiaolin Song Jianhua Jiang James C. Hower Tian Li Vladimir V. Seredin Nicola J. Wagner Yaofa Jiang Xibo Wang Jingjing Liu | 2014 | International Journal of Coal Geology2014，，： | 1 |
| 9 | Origin of minerals and elements in the Late Permian coals, tonsteins, and host rocks of the Xinde Mine, Xuanwei, eastern Yunnan, China显示文摘 | Shifeng Dai Tian Li Vladimir V. Seredin Colin R. Ward James C. Hower Yiping Zhou Mingquan Zhang Xiaolin Song Weijiao Song Cunliang Zhao | 2014 | International Journal of Coal Geology2014，，： | 1 |
| 10 | Parametric Analysis of MPD Hydraulics显示文摘 | Shifeng Tian George Medley Rick Stone C | | IADC/SPE 1083540，，： | 1 |
| 11 | Petrology, mineralogy, and geochemistry of the Ge-rich coal from the Wulantuga Ge ore deposit, Inner Mongolia, China: New data and genetic implications显示文摘 | Shifeng Dai Xibo Wang Vladimir V. Seredin James C. Hower Colin R. Ward Jennifer M.K. O’Keefe Wenhui Huang Tian Li Xiao Li Huidong Liu Weifeng Xue Lixin Zhao | 2011 | International Journal of Coal Geology2011，，： | 1 |
| 12 | Optical thermometry based on upconverted luminescence in transparent glass ceramics containing NaYF 4 :Yb 3+ /Er 3+ nanocrystals显示文摘 | Sha Jiang Peng Zeng Liqing Liao Shifeng Tian Hai Guo Yonghu Chen Changkui Duan Min Yin | 2014 | Journal of Alloys and Compounds2014，，： | 1 |
| 13 | Optimizing circulation while drilling underbalanced显示文摘 | Medley G H Stone C R | 2000 | World Oil2000，，6： | 1 |
| 14 | Optimizing circulation while drilling underbalanced显示文摘 | TIAN SHIFENG MEDIEY GEORGE H STONE CH-ARIES R | 2000 | World Oil2000，6，： | 1 |
| 15 | Advanced geothermal wellbore hydraulics model 显示文摘 | Tian Shifeng Finger J T | 2000 | Journal of Energy Resources Technology2000，122，3： | 1 |
| 16 | Development of hydro-dynamic-model-based air-drilling design procedures显示文摘 | ADEWUMI M A | | SPE0，，： | 1 |
| 17 | Multiphase hydrodynamic model predicts important phenomena in air drilling hydraulics显示文摘 | ADEWUMI M A | | SPE0，，： | 1 |
| 18 | Nanoquartz inLate Permian Cl coal and the high incidence of female lung cancerin the Pearl River Origin area:a retrospective cohort study显示文摘 | TIAN Linwei DAI Shifeng WANG Jianfang | 2008 | BMC Public Health2008，，： | 1 |
| 19 | The influences of composition and pore structure on the adsorption behavior of CH_(4) and CO_(2) on shale显示文摘CO_(2) enhanced shale gas recovery(CO_(2)-ESGR)has attracted extensive attention as it can improve the shale gas recovery efficiency and sequestrate CO_(2) simultaneously.In this study,the relationship between mineral composition,pore structure,CH_(4) and CO_(2) adsorption behavior as well as selective adsorption coefficient of CO_(2) over CH_(4)(αCO_(2)/CH_(4))in marine and continental shales at different temperatures was investigated.The results illustrated that shale with higher total organic carbon(TOC),higher clay minerals and lower brittle mineral contents has a larger micropores and mesopores volume and specific surface area.TOC content was positively correlated with fractal dimension Df.Both CH_(4) and CO_(2) adsorption capacity in shale have positive correlations with TOC and clay mineral content.CO_(2) adsorption capacity of the all the tested shale samples were greater than CH_(4),and theαCO_(2)/CH_(4) of shale were larger than 1.00,which indicated that using CO_(2)-ESGR technology to improve the gas recovery is feasible in these shale gas reservoirs.A higher TOC content and in shale corresponding to a lowerαCO_(2)/CH_(4) due to the organic matters show stronger affinity on CH_(4) than that on CO_(2).Shale with a higher brittle mineral content corresponding to a higherαCO_(2)/CH_(4),and no obvious correlation betweenαCO_(2)/CH_(4) and clay mineral content in shale was observed due to the complexity of the clay minerals.TheαCO_(2)/CH_(4) of shale were decreased with increasing temperature for most cases,which indicated that a lower temperature is more favorable for the application of CO_(2)-ESGR technique. | Xiangzeng WANG Junping ZHOU Xiao SUN Shifeng TIAN Jiren TANG Feng SHEN Jinqiao WU | 2021 | Frontiers of Earth Science2021，15，2： | 0 |
| 20 | Visual recognition of cardiac pathology based on 3D parametric model reconstruction显示文摘Visual recognition of cardiac images is important for cardiac pathology diagnosis and treatment.Due to the limited availability of annotated datasets,traditional methods usually extract features directly from twodimensional slices of three-dimensional(3D)heart images,followed by pathological classification.This process may not ensure the overall anatomical consistency in 3D heart.A new method for classification of cardiac pathology is therefore proposed based on 3D parametric model reconstruction.First,3D heart models are reconstructed based on multiple 3D volumes of cardiac imaging data at the end-systole(ES)and end-diastole(ED)phases.Next,based on these reconstructed 3D hearts,3D parametric models are constructed through the statistical shape model(SSM),and then the heart data are augmented via the variation in shape parameters of one 3D parametric model with visual knowledge constraints.Finally,shape and motion features of 3D heart models across two phases are extracted to classify cardiac pathology.Comprehensive experiments on the automated cardiac diagnosis challenge(ACDC)dataset of the Statistical Atlases and Computational Modelling of the Heart(STACOM)workshop confirm the superior performance and efficiency of this proposed approach. | Jinxiao XIAO Yansong LI Yun TIAN Dongrong Xu Penghui LI Shifeng ZHAO Yunhe PAN | 2022 | Frontiers of Information Technology & Electronic Engineering2022，23，9： | 0 |
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