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Comparison and analysis of mitigation ambitions of Parties’ updated Nationally Determined Contributions

Advances in Climate Change Research 2023年第1期14卷 4-12页

作者： Hai-Lin WANG Yu-Yan WENG xun-Zhang pan Institute of Energy Environment and EconomyTsinghua UniversityBeijing 100084China Think Tank Center Tsinghua UniversityBeijing 100084China School of Economics and Management China University of PetroleumBeijing 102249China

Understanding mitigation ambitions of the Nationally Determined Contributions(NDCs)should include both the equity of supporting the Paris Agreement goals and the costs of achieving the proposed mitigation *** study presents a new framework that combines equity and economic costs to compare and analyze mitigation ambitions of Parties'updated *** representative 2℃ and 1.5℃ pathways,this framework uses multiple equity-principled allocations to derive the alignment of the updated NDCs with the Paris Agreement goals,and further applies a computable general equilibrium model to assess the economic costs of implementing the updated *** results show that global 2030 emissions may meet the selected global 2℃ pathway if all Parties achieve their most ambitious mitigation efforts,but there is still an emissions gap of 10-15 GtCO_(2) to follow the selected 1.5℃ *** the perspective of equity,the updated NDCs of the USA,the EU(including the UK in this study),and Japan lack ambition with respect to‘equal cumulative per capita emissions’under 2℃ and do not align with any equity principles under 1.5℃.The updated NDCs of China,India,Brazil and South Africa reflect their claims to‘equity’and‘common but differentiated responsibilities’.From the perspective of economic costs,the GDP and welfare losses of China,Brazil and South Africa incurred by achieving the updated NDCs are not lower than those of the three developed ***'s GDP loss is estimated at 0.43%-0.55%in 2030,which is higher than that of the USA(0.30%-0.38%)and the EU(0.25%-0.28%).This study suggests that developed Parties take the lead in further ratcheting up the NDCs and strengthen financial and technological support to developing countries so that the world could close the gap to 1.5℃.

关键词： Updated NDCs 2030 emissions Equity Economic costs Paris Agreement

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ARCS动机模型在工科课程案例教学中的应用研究——以“船舶减振降噪技术”课程为例

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教育教学论坛 2024年第13期 141-144页

作者：余文晶程果潘逊海军工程大学动力工程学院湖北武汉430033

学生的动机水平是自主学习的重要因素。针对“船舶减振降噪技术”课程知识点繁多且庞杂、与工程实际联系紧密的特点,提出利用ARCS动机模型指导案例教学设计的方法。以“声短路”影响测定实验课为例,通过案例内容优化提升学习注意力,通... 详细信息

学生的动机水平是自主学习的重要因素。针对“船舶减振降噪技术”课程知识点繁多且庞杂、与工程实际联系紧密的特点,提出利用ARCS动机模型指导案例教学设计的方法。以“声短路”影响测定实验课为例,通过案例内容优化提升学习注意力,通过职业发展关联提升学习相关性,通过小组分工合作提升学习自信心,通过学习评价设计提升学习满意度。教学实践结果表明,该方法能有效激发和维持学生内生动力,提升教学效果,强化学生的职业素养和能力。

关键词： ARCS动机模型案例教学减振降噪

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Multiblock poly(ether-b-amide)copolymers comprised of PA1212 and PPO-PEO-PPO with specific moisture-responsive and antistatic properties

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Chinese Journal of Chemical Engineering 2023年第1期53卷 421-430页

作者： Jie Jiang Wei Cheng Qiuyu Tang xun pan Jinjin Li Ling Zhao Zhenhao Xi Weikang Yuan State Key Laboratory of Chemical Engineering School of Chemical EngineeringEast ChinaUniversity of Science and TechnologyShanghai 200237China Shanghai Key Laboratory of Multiphase Materials Chemical Engineering East China University of Science and TechnologyShanghai 200237China Flinders Institute for Nanoscale Science and Technology Flinders UniversitySA 5042Australia College of Chemistry and Chemical Engineering Xinjiang UniversityUrumqi 830046China

Functional multiblock poly(ether-b-amide)(PEBA)copolymers,comprised of PA1212(polyamide 1212)as hard segments and Jeffamine ED-2003 as soft segments,were successfully prepared via two-step melt polycondensation without any amidation ***,using diamino-terminated poly(propylene oxide)-poly(ethylene oxide)-poly(propylene oxide)(PPO-PEO-PPO),Jeffamine ED-2003,enhances the compatibility between polyamide oligomer and polyether,which is better than the traditional route using hydroxyl-terminated *** chemical structure of multiblock PEBAs,as well as the microphase separated structure with crystalline phase of polyamide and polyether,were confirmed by heteronuclear multiple-bond correlation spectrum,heteronuclear multiple quantum correlation spectrum,Fourier transform infrared spectroscopy(FT-IR),differential scanning calorimetry and dynamic mechanical *** hydrophilic PEBA copolymers showed water adsorption ranging from 87.3%to 17.1%depending on the polyether content,and specially showed moisture responsive behavior within seconds when exposed to *** corresponding mechanism was studied using time-resolved attenuated total reflectance FT-IR spectroscopy in the molecular level and the water diffusion coefficient was estimated to be 1.07×10^(–8)cm^(2)∙s^(-1).Two-dimensional correlation FT-IR spectra analysis was performed to confirm that the interaction between water and polyether phase was in preference to that between water and polyamide matrix,and water molecule only forms hydrogen bond with the polyether *** to the incorporation of PEO segments,the PEBAs have the surface resistivity varying from 5.6×10^(9)to 6.5×10^(10)Ω,which makes PEBA potential candidate as permanent antistatic agent.

关键词： Poly(ether-b-amide)s Moisture-responsive Antistatic In situ FT-IR 2D FT-IR analysis

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Spillover of international crude oil prices on China's refined oil wholesale prices and price forecasting:Daily-frequency data of private enterprises and local refineries

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Petroleum Science 2022年第3期19卷 1433-1442页

作者： xun-Zhang pan Xi-Ran Ma Li-Ning Wang Ya-Chen Lu Jia-Quan Dai Xiang Li School of Economics and Management China University of PetroleumBeijing 102249China Economics&Technology Research Institute China National Petroleum CorporationBeijing 100724China Key Laboratory of Oil and Gas Market Simulation and Price Forecasting China National Petroleum CorporationBeijing 100724China Institue of Energy Peking UniversityBeijing 100080China

Compared with retail prices of state-owned companies used in almost all existing studies,China’s refined oil wholesale prices of private enterprises and local refineries are more affected by the market and better reflect the real supply-demand *** the first time,this paper applies own-monitored dailyfrequency wholesale prices of China’s private enterprises and local refineries during 2013-2020 to derive spillover effects of international crude oil prices on China’s refined oil prices through the VAR-BEKKGARCH(vector autoregression-Baba,Engle,Kraft,and Kroner-generalized autoregressive conditional heteroscedasticity)model,and then tries to forecast wholesale prices through the PCA-BP(principal component analysis-back propagation)neural network *** show that international crude oil prices have significant mean spillover and volatility spillover effects on China’s refined oil wholesale *** in crude oil prices are the Granger cause of changes in refined oil wholesale *** the improvement of China’s oil-pricing mechanism in 2016,the volatility spillover from the international crude oil market to China’s refined oil market gradually increases,and the BRENT price variation has an increasing impact on the refined oil wholesale price *** PCA-BP model could serve as a candidate tool for forecasting China’s refined oil wholesale prices.

关键词： Own-monitored daily-frequency data Refined oil wholesale prices Spillover effects VAR-BEKK-GARCH PCA-BP neural Network

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Recent advances in bioinspired vision systems with curved imaging structures

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Rare Metals 2024年第4期43卷 1407-1434页

作者： Ze-Ping He xun Han Wen-Qiang Wu Zhang-Sheng Xu Cao-Feng pan CAS Center for Excellence in Nanoscience Beijing Key Laboratory of Micro-Nano Energy and SensorBeijing Institute of Nanoenergy and NanosystemsChinese Academy of SciencesBeijing100083China School of Nanoscience and Technology University of Chinese Academy of SciencesBeijing100049China ZJU-Hangzhou Global Scientific and Technological Innovation Center School of Micro-Nano ElectronicsZhejiang UniversityHangzhou311200China Institute of Microscale Optoelectronics Shenzhen UniversityShenzhen518060China

Limited by the planar imaging structure,the commercial camera needs to introduce additional optical elements to compensate for the curved focal plane to match the planar image *** results in a complex and bulky *** contrast,biological eyes possess a simple and compact structure due to their curved imaging structure that can directly match with the curved focal *** by the structures and functions of biological eyes,curved vision systems not only improve the image quality,but also offer a variety of advanced ***,we review the recent advances in bioinspired vision systems with curved imaging ***,we focus on their applications in implementing different functions of biological eyes,as well as the emerging curved neuromorphic imaging systems that incorporate bioinspired optical and neuromorphic processing *** addition,the challenges and opportunities of bioinspired curved imaging systems are also discussed.

关键词： Bioinspired Curved vision system Compound eye Chambered eye Neuromorphic

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针药结合治疗面神经炎早期多项主客观指标与痊愈时间相关性探讨

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重庆医学 2024年第2期53卷 246-250,256页

作者：苏秋菊吴雪燕潘迅苏旻承诗琪陈竹闻南京医科大学附属无锡人民医院/南京医科大学无锡医学中心康复医学科江苏无锡214023 南京医科大学附属无锡人民医院/南京医科大学无锡医学中心功能神经外科江苏无锡214023

目的分析针药结合分期治疗面神经炎患者早期多项评估指标与痊愈时间(治疗至痊愈所需时间)的相关性,优选出能早期预测面神经炎痊愈时间的主客观指标。方法针药结合分期治疗所有患者,研究对象为来自该院针灸科门诊的64例面神经炎患者,对... 详细信息

目的分析针药结合分期治疗面神经炎患者早期多项评估指标与痊愈时间(治疗至痊愈所需时间)的相关性,优选出能早期预测面神经炎痊愈时间的主客观指标。方法针药结合分期治疗所有患者,研究对象为来自该院针灸科门诊的64例面神经炎患者,对其发病第7天时面神经瘫痪分级、表面肌电图相关数据、自拟症状评分量表评分、Sunnybrook面神经评定系统(SFGS)评分、面部残疾指数躯体功能(FDIP)评分、面部残疾指数社会生活功能(FDIS)评分与患者痊愈时间进行相关性分析。结果痊愈时间与发病第7天的面神经瘫痪分级、FDIS评分呈正相关(P0.05)。结论在针药结合治疗面神经炎患者的早期主观指标中面神经瘫痪分级、自拟症状评分量表评分、FDIP、FDIS评分及客观指标中表面肌电图面神经颊支、颞支CMAP振幅患健侧比值可用来预判痊愈时间,能更好地指导治疗及与患者更有效精准沟通。

关键词：面神经炎表面肌电图面神经瘫痪分级症状评分量表面部残疾指数

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Simultaneous determination of three classes of antibiotics in the suspended solids of swine wastewater by ultrasonic extraction,solid-phase extraction and liquid chromatography-mass spectrometry

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Journal of Environmental Sciences 2011年第10期23卷 1729-1737页

作者： xun pan Zhimin Qiang Weiwei Ben Meixue Chen Research Center for Eco-Environmental Sciences Chinese Academy of Sciences Beijing 100085 China

This work describes a systematic approach to the development of a method for simultaneous determination of three classes of veterinary antibiotics in the suspended solids （SS） of swine wastewater, including five sulfonamides, three tetracyclines and one macrolide （tiamulin）. The entire procedures for sample pretreatment, ultrasonic extraction （USE）, solid-phase extraction （SPE）, and liquid chromatography-mass spectrometry （LC-MS） quantification were examined and optimized. The recovery efficiencies were found to be 76%-104% for sulfonamides, 81%-112% for tetracyclines, and 51%--64% for tiamulin at three spiking levels. The intra-day and inter-day precisions, as expressed by the relative standard deviation （RSD）, were below 17%. The method detection limits （MDLs） were between 0.14 and 7.14 μg/kg, depending on a specific antibiotic studied. The developed method was applied to field samples collected from three concentrated swine feeding plants located in Beijing, Shanghai and Shandong province of China. All the investigated antibiotics were detected in both SS and liquid phase of swine wastewater, with partition coefficients （logKd） ranging from 0.49 to 2.30. This study demonstrates that the SS can not be ignored when determining the concentrations of antibiotics in swine wastewater.

关键词： antibiotics swine wastewater suspended solids ultrasonic extraction solid-phase extraction mass spectrometry

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Some New Solitary Wave Solutions to a Compound KdV-Burgers Equation

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Communications in Theoretical Physics 2008年第7期50卷 51-52页

作者： GONG Lun-xun pan Jun-Ting School of Science Guizhou Normal University Guiyang 550001 China

In terms of the solutions of an auxiliary ordinary differential equation,a new algebraic method,whichcontains the terms of first-order derivative of functions f (ξ),is constructed to explore the new solitary wave solutions fornonlinear evolution *** method is applied to a compound KdV-Burgers equation,and abundant new solitarywave solutions are *** algorithm is also applicable to a large variety of nonlinear evolution equations.

关键词：移动波复合物方程式理论物理学

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Some New Solutions of Jacobi Elliptic Functions to mBBM Equation

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Communications in Theoretical Physics 2007年第5X期48卷 787-790页

作者： GONG Lun-xun pan Jun-Ting School of Science Guizhou Normal University Guiyang 550001 China

The modified mapping method is further improved by the expanded expression of u(ξ) that contains the terms of the first-order derivative of function f(ξ). Some new exact solutions to the mBBM equation are determined by means of the method. We can obtain many new solutions in terms of the Jacobi elliptic functions of the equation.

关键词：椭圆性影射方法物理学方程式

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A New Algebraic Method and Its Application to Nonlinear Klein-Gordon Equation

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Communications in Theoretical Physics 2008年第12期50卷 1276-1278页

作者： GONG Lun-xun pan Jun-Ting School of Science Guizhou Normal University Guiyang 550001 China

In terms of the solutions of the generalized Riccati equation,a new algebraic method,which contains theterms of radical expression of functions f(ξ),is constructed to explore the new exact solutions for nonlinear *** concise and straightforward,the method is applied to nonlinear Klein Gordon equation,and some newexact solutions of the system are *** method is of important significance in exploring exact solutions for othernonlinear evolution equations.

关键词：开边界条件 Hubbard模型量子杂质模型理论物理学

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