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The Paradigm Transformation of Postmodern Philosophy of Religion--Taking Don Cupitt and George lindbeck as an Example

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学术界 2013年第6期 250-254页

作者： li jianping Department of Philosophy Zhejiang University Hangzhou Zhejiang 310028

Western postmodern philosophy of religion is the third significant shift following the ancient ontology paradigm and the modern subject *** religious philosophers,taking the focus on language as their theoretical basis,criticize the paradigm of the traditional philosophy of *** the same time,as a kind of complex thought trend,the postmodern philosophy of relligion also presents different ideological trends--one is radical and the other is conservative.

关键词：后现代哲学宗教皮特本体论哲学家

Experimental and Numerical Studies of Vitiated Air Effects on Hydrogen-fueled Supersonic Combustor Performance

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Chinese Journal of Aeronautics 2012年第2期25卷 164-172页

作者： LUO Feiteng SONG Wenyan ZHANG Zhiqiang li Weiqiang li jianping School of Power and Energy Northwestern Polytechnical UniversityXi'an 710072China

This paper deals with the vitiation effects of test air on the scramjet performance in the ground combustion heated facilities. The primary goal is to evaluate the effects of H2O and CO2, the two major vitiated species generated by combustion heater, on hydrogen-fueled supersonic combustor performance with experimental and numerical approaches. The comparative experiments in the clean air and vitiated air are conducted by using the resistance heated direct-connected facility, with the typical Mach 4 flight conditions simulated. The H2O and CO2 species with accurately controlled contents are added to the high enthalpy clean air from resistance heater, to synthesize the vitiated air of a combustion-type heater. Typically, the contents of H2O species can be varied within the range of 3.5%-30% by mole, and 3.0%-10% for CO2 species. The total temperature, total pressure, Mach number and O2 mole fraction at the combustor entrance are well-matched between the clean air and vitiated air. The combustion experiments are completed at the fuel equivalence ratios of 0.53 and 0.42 respectively. Furthermore, three-dimensional （3D） reacting flow simulations of combustor flowpath are performed to provide insight into flow field structures and combustion chemistry details that cannot resolved by experimental instruments available. Finally, the experimental data, combined with computational results, are employed to analyze the effects of H2O and CO2 vitiated air on supersonic combustion characteristics and performance. It is concluded that H2O and CO2 contaminants can significantly inhibit the combustion induced pressure rise measured from combustor wall, and the pressure profile decreases with the increasing H2O and CO2 contents in nonlinear trend; simulation results agree well with experimental data and the overall vitiation effects are captured; direct extrapolation of the results from vitiated air to predict the performance of actual flight conditions could result in over-fueling

关键词： scramjet hydrogen supersonic combustion vitiation effects experimental investigation numerical simulation

ENSO事件下赤道中东太平洋海温场非对称性特征

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海洋气象学报 2024年第1期44卷 1-13页

作者：张文珺李建平中国海洋大学深海圈层与地球系统前沿科学中心山东青岛266100 中国海洋大学物理海洋教育部重点实验室山东青岛266100 中国海洋大学海洋与大气学院山东青岛266100 中国海洋大学未来海洋学院山东青岛266100 青岛海洋科学与技术试点国家实验室海洋动力过程与气候功能实验室山东青岛266237

利用1950—2020年冬季HadISST逐月海面温度(sea surface temperature, SST)资料、SODAv2.2.4逐月SST和三维海洋流速同化资料以及NCEP/NCAR 2 m高度上的逐月气温(surface air temperature, SAT)资料,使用非对称合成差分析方法、海洋混合层热量收支诊断方法等,探究El Ni1o事件和La Ni1a事件下造成赤道东太平洋(E区:110°W~80°W,10°S~10°N)、赤道中太平洋(C区:160°E~170°W,10°S~10°N)SST异常场显著不同非对称性特征的可能海洋动力过程,分析ENSO事件非对称强迫下2 m高度上SAT异常场的非对称空间响应。结果表明:E区El Ni1o事件的强度显著强于La Ni1a事件,C区则相反。非线性动力学加热作用对E区和C区El Ni1o年和La Ni1a年SST异常场的非对称分量都起到了正反馈作用,是造成这两个区域SST异常场产生正、负非对称分量的主导动力因子。埃克曼输送作用不利于E区SST异常场正非对称分量的形成,但有利于C区SST异常场负非对称分量的形成。平均流、纬向平流和温跃层的非对称正反馈作用阻碍了C区SST异常场负非对称分量的形成。2 m高度上SAT异常场的非对称分布与SST异常场的非对称分布较为一致,但SAT异常场正、负非对称分量的显著范围明显减小,部分区域的非对称结果不显著。

关键词： ENSO 非对称性热收支分析

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Multidecadal Trends in Large-Scale Annual Mean SATa Based on CMIP5 Historical Simulations and Future Projections

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Engineering 2017年第1期3卷 136-143页

作者： Nan Xing jianping li Lanning Wang College of Global Change and Earth System Science Beijing Normal University Belting 100875 China Belting Meteorological Observatory Belting 100089 China Joint Center for Global Change Studies Beijing 100875 China

Based on observations and Coupled Model lntercomparison Project Phase 5 （CMIP5） results, multidecadal variations and trends in annual mean surface air temperature anomalies （SATa） at global, hemispheric, and hemispheric land and ocean scales in the past and under the future scenarios of two representative concentration pathways （RCPs） are analyzed. Fifteen models are selected based on their performances in capturing the temporal variability, long-term trend, multidecadal variations, and trends in global annual mean SATa. Observational data analysis shows that the multidecadal variations in annual mean SATa of the land and ocean in the northern hemisphere （NH） and of the ocean in the southern hemisphere （SH） are similar to those of the global mean, showing an increase during the 1900-1944 and 1971-2000 periods, and flattening or even cooling during the 1945-1970 and 2001-2013 periods. These observed characteristics are basically reproduced by the models. However, SATa over SH land show an increase during the 1945-1970 period, which differs from the other hemispheric scales, and this feature is not captured well by the models. For the recent hiatus period （2001-2013）, the projected trends of BCC-CSM1-1-m, CMCC-CM, GFDL-ESM2M, and NorESM1-ME at the global and hemispheric scales are closest to the observations based on RCP4.5 and RCP8.5 scenarios, suggesting that these four models have better projection capability in SATa. Because these four models are better at simulating and projecting the multidecadal trends of SATa, they are selected to analyze future SATa variations at the global and hemispheric scales during the 2006-2099 period. The selected multi-model ensemble （MME） projected trends in annual mean SATa for the globe, NH, and SH under RCP4.5 （RCP8.5） are 0.17 （0.29） ℃, 0.22 （0.36） ℃, and 0.11 （0.23） ℃-decade-1 in the 21st century, respectively. These values are significantly lower than the projections of CMIP5 MME without model selection.

关键词： Surface air temperature anomalies (SATa) Multidecadal trend Coupled Model lntercomparison Project Phase 5 (CMIPS) Projection

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基础环式基础连接旋转刚度的退化规律研究

水力发电 2024年第6期50卷 97-103页

作者：李建平刘哲锋长沙理工大学土木工程学院湖南长沙410114

基础环式重力基础损伤降低了基础环与基础混凝土的锚固性,因此导致风力机在运行过程中基础环发生较大倾斜,影响风力机的电力安全生产。通过两台风力机的监测试验发现,两台风力机的基础连接旋转刚度存在较大差异。为了解不同损伤程度基... 详细信息

基础环式重力基础损伤降低了基础环与基础混凝土的锚固性,因此导致风力机在运行过程中基础环发生较大倾斜,影响风力机的电力安全生产。通过两台风力机的监测试验发现,两台风力机的基础连接旋转刚度存在较大差异。为了解不同损伤程度基础对基础连接旋转刚度的影响,基于ABAQUS建立2.0 MW风力机基础有限元无损伤基础和13种损伤基础模型,计算得到不同损伤程度风力机基础的连接旋转刚度。结果表明:基础环式基础连接旋转刚度随着下法兰混凝土空腔的增大而降低,基础环与混凝土贯穿裂缝基础的基础连接旋转刚度为初始刚度的76.4%,下法兰15°空腔基础的基础连接旋转刚度为初始刚度的52.1%,空腔角度在0°~15°和30°~75°范围对基础连接旋转刚度的衰减程度较大。根据基础损伤对基础环式基础连接旋转刚度的影响规律,提出一种风力机基础稳定性的评价方法。该方法以风力机装配完毕后的基础连接旋转刚度作为初始基础连接旋转刚度,为后期基础环式风力机基础连接旋转刚度提供对比依据。

关键词：风力机基础基础损伤基础连接旋转刚度主风方向有限元模型

A numerical study of the effect of the marginal sea on coastal upwelling in a non-linear inertial model

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Science China Earth Sciences 2014年第11期57卷 2587-2596页

作者： CHAO JiPing KANG YanYan li jianping National Marine Environmental Forecasting Center LASG Institute of Atmospheric Physics Chinese Academy of Sciences College of Earth Sciences University of Chinese Academy of Sciences

Inertia theory and the finite element method are used to investigate the effect of marginal seas on coastal upwelling. In contrast to much previous research on wind-driven upwelling, this paper does not consider localized wind effects, but focuses instead on temperature stratification, the slope of the continental shelf, and the background flow field. Finite element method, which is both faster and more robust than finite difference method in solving problems with complex boundary conditions, was developed to solve the partial differential equations that govern coastal upwelling. Our results demonstrate that the environment of the marginal sea plays an important role in coastal upwelling. First, the background flow at the outer boundary is the main driving force of upwelling. As the background flow strengthens, the overall velocity of cross-shelf flow increases and the horizontal scale of the upwelling front widens, and this is accompanied by the movement of the upwelling front further offshore. Second, temperature stratification determines the direction of cross-shelf flows, with strong stratification favoring a narrow and intense upwelling zone. Third, the slope of the continental shelf plays an important role in controlling the intensity of upwelling and the height that upwelling may reach: the steeper the slope, the lower height of the upwelling. An additional phenomenon that should be noted is upwelling separation, which occurs even without a local wind force in the nonlinear model.

关键词： coastal upwelling inertia theory Finite Element Method (FEM)

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《长沙走马楼西汉简牍选粹》释文补正

现代语文 2024年第3期 38-45页

作者：雷长巍李建平山东师范大学文学院山东济南250014

《长沙走马楼西汉简牍选粹》公布了最新西汉简牍资料120枚。基于红外影像图版,通过系统校读简文释文,并参考未刊走马楼西汉简牍文献资料,对《长沙走马楼西汉简牍选粹》所收简牍释文进行补充和订正。其中,订正释文文字14例,补释未释文字2... 详细信息

《长沙走马楼西汉简牍选粹》公布了最新西汉简牍资料120枚。基于红外影像图版,通过系统校读简文释文,并参考未刊走马楼西汉简牍文献资料,对《长沙走马楼西汉简牍选粹》所收简牍释文进行补充和订正。其中,订正释文文字14例,补释未释文字29例,修订脱文衍文1例。这一个案研究,将有利于推动走马楼西汉简牍新材料的应用和探讨。

关键词：《走马楼西汉简牍选粹》释文补正

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Microstructure and properties in dissimilar/similar weld joints between DP780 and DP980 steels processed by fiber laser welding

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Journal of Materials Science & Technology 2017年第12期33卷 1561-1571页

作者： Hongshuang Di Qian Sun Xiaonan Wang jianping li State Key Laboratory of Rolling and Automation Northeastern UniversityShenyang 110819China Shagang School of Iron and Steel Soochow UniversitySuzhou 215021China

The microstructure and mechanical properties（strength, fatigue and formability） of dissimilar/similar weld joints between DP780 and DP980 steels were studied. The microstructure in fusion zone（FZ） was lath martensite（LM）, and alloying elements in the FZ were uniformly distributed. The hardness in the FZ of dissimilar weld joint was similar to the average value（375 HV） of the two similar weld joints. The microstructural evolution in heat affected zone（HAZ） of dissimilar/similar weld joints was as follows：LM（coarse-grained HAZ） →finer LM（fine-grained HAZ） →M-A constituent and ferrite（intercritically HAZ） →tempered martensite（TM） and ferrite（sub-critical HAZ）. Lower hardness in intercritically HAZ and sub-critical HAZ（softening zones） was observed compared to base metal（BM） in dissimilar/similar weld joints. The size of softening zone was 0.2-0.3 mm and reduction in hardness was ~7.6%-12.7% of BM in all the weld joints, which did not influence the tensile properties of weld joints such that fracture location was in BM. Formability of dissimilar weld joints was inferior compared to similar weld joints because of the softening zone, non-uniform microstructure and hardness on the two sides of FZ. The effect of microstructure on fatigue life was not influenced due to the presence of welding concavity.

关键词： Dual phase steel Laser welding Dissimilar weld joints Microstructure Mechanical properties Formability

Al-5Nb-B细化剂对Al-12Si合金组织与性能的影响

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热加工工艺 2024年第1期53卷 100-104页

作者：张向东郭永春夏峰李建平西安工业大学材料与化工学院陕西西安710021

采用氟盐法制备了Al-5Nb-B晶粒细化剂,将所制备的细化剂按不同含量(0.0wt%、1.5wt%、3.0wt%、4.5wt%)分别添加到Al-12Si合金中。采用光学显微镜、扫描电镜对添加不同含量晶粒细化剂的Al-12Si合金的显微组织进行观察,并在电子万能试验机(... 详细信息

采用氟盐法制备了Al-5Nb-B晶粒细化剂,将所制备的细化剂按不同含量(0.0wt%、1.5wt%、3.0wt%、4.5wt%)分别添加到Al-12Si合金中。采用光学显微镜、扫描电镜对添加不同含量晶粒细化剂的Al-12Si合金的显微组织进行观察,并在电子万能试验机(D2-02001)上进行室温力学性能测试。研究了Al-5Nb-B晶粒细化剂对近共晶Al-12Si合金显微组织与拉伸性能的影响。结果表明:氟盐法制备的Al-5Nb-B晶粒细化剂主要包含平均尺寸为20μm的Al3Nb颗粒和5μm的NbB2颗粒。随着Al-5Nb-B晶粒细化剂含量的增大,Al-12Si合金中α-Al晶粒尺寸由未添加的1864μm减小到396μm,铸态合金的抗拉强度由128 MPa增大到145 MPa,且断后伸长率由6.9%提高到9.8%。氟盐法制备的Al-5Nb-B晶粒细化剂提高了NbB2在Al-12Si合金熔体中的形核数,有效细化了α-Al基体,提高了合金力学性能。

关键词： Al-5Nb-B晶粒细化剂 Al-Si合金显微组织力学性能