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书院制模式下高校辅导员工作专业化路径探索

广东青年职业学院学报 2014年第1期28卷 68-72页

作者：刘佳时南华东师范大学孟宪承书院上海200241

随着教育事业的发展,高校体制改革已成为一种趋势和必然,书院制的引入无疑是这一改革过程中重要的尝试。与此同时,辅导员作为高校学生工作的重要管理者、组织者、服务者,其职业发展前景的不明朗之势已是众多从业者的担忧,也成为众多学... 详细信息

随着教育事业的发展,高校体制改革已成为一种趋势和必然,书院制的引入无疑是这一改革过程中重要的尝试。与此同时,辅导员作为高校学生工作的重要管理者、组织者、服务者,其职业发展前景的不明朗之势已是众多从业者的担忧,也成为众多学者研究的重要议题。本文在全面分析当前辅导员工作的现状与所面临困境的基础上,拟在书院制模式下寻求辅导员发展的新型路径,实现辅导员工作的专业化定位,对高校及辅导员队伍自身的长远发展进行有益探索。

关键词：书院制模式辅导员专业化路径探索

887所医疗保健机构助产技术实施现况的分析

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中华妇产科杂志 2007年第5期42卷 305-308页

作者：王斌石琦王燕李楠石玲北京大学公共卫生学院妇幼卫生教研室 100083 卫生部妇幼保健与社区卫生司妇女卫生处

目的了解6种助产技术在全国各级医疗保健机构中的使用情况。方法采用信函问卷的方法调查了全国31个省、自治区、直辖市887所不同级别的医疗保健机构2002年助产技术的使用情况并进行分析。结果被调查的医疗保健机构平均剖宫产率为38.0%;... 详细信息

目的了解6种助产技术在全国各级医疗保健机构中的使用情况。方法采用信函问卷的方法调查了全国31个省、自治区、直辖市887所不同级别的医疗保健机构2002年助产技术的使用情况并进行分析。结果被调查的医疗保健机构平均剖宫产率为38.0%;会阴切开缝合术使用率为44.9%;胎头吸引术使用率为3.6%;产钳助产术使用率为1.9%;臀位牵引术使用率为1.4%,内倒转术使用率为0.2%。结论目前,剖宫产率偏高及会阴切开缝合术使用过于频繁,胎头吸引术、产钳助产术等阴道助产技术濒临荒废。卫生行政部门应该重视助产技术的培训,并加强对助产技术实施情况的监督管理。

关键词：接生产科问卷医疗保健机构助产技术

A dilute fluorine-free electrolyte design for high-voltage hybrid aqueous batteries

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Journal of Energy Chemistry 2023年第2期77卷 180-190,I0005页

作者： Rui Lin jiahao Chen Changming Ke shi Liu jianhui Wang School of Materials Science&Engineering Zhejiang UniversityHangzhou 310024ZhejiangChina Key Laboratory of 3D Micro/nano Fabrication and Characterization of Zhejiang Province School of EngineeringWestlake UniversityHangzhou 310024ZhejiangChina Institute of Advanced Technology Westlake Institute for Advanced StudyHangzhou 310024ZhejiangChina Key Laboratory for Quantum Materials of Zhejiang Province Department of PhysicsSchool of ScienceWestlake UniversityHangzhou 310030ZhejiangChina Institute of Natural Sciences Westlake Institute for Advanced StudyHangzhou 310024ZhejiangChina

Fluorinated salts and/or high salt concentrations are usually necessary to produce protective films on the electrodes for high-voltage aqueous batteries,yet these approaches increase the cost,toxicity and reaction resistances of ***,we report a dilute fluorine-free electrolyte design to overcome this *** using the LiClO_(4) salt and polyethylene glycol dimethyl ether(PED)solvent and optimizing the LiClO_(4)/PED/H_(2)O molar ratio,we formulate a 1 mol kg^(-1)3 V-class hybrid aqueous electrolyte that enables reversible charge/discharge of 2.5 V LiMn_(2)O_(4)|Li_(4)Ti_(5)O_(12) full cell at both low(0.5C,92.4%capacity retention in 300 cycles)and high(5C,80.4%capacity retention in 2000 cycles)*** excellent performance is reached even without the generation of protective film on either anode or cathode as identified by in/ex situ *** selection of appropriate ingredients that have both high stability and strong interactions with water is critical to widen the potential window of electrolyte while suppressing parasitic reactions on the *** work suggests that expensive and toxic fluorinate salts are no longer necessary for 3 V-class aqueous electrolytes,boosting the development of low-cost,environmentally-friendly,high-power and high-energy-density aqueous batteries.

关键词： High-voltage hybrid aqueous batteries Fluorine-free electrolyte design Interphase chemistry Polyethylene glycol dimethyl ether

Room-temperature hydrogen adsorption in Pd nanoparticle decorated UiO-66-NH2 via spillover

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Particuology 2024年第10期93卷 309-315页

作者： Jingchuan Wang Junhong Luo Yong Yao jiangfeng Song Yan shi Institute of Materials China Academy of Engineering PhysicsJiangyou621908China

To improve room-temperature hydrogen storage, palladium (Pd) nanoparticles were innovatively decorated by carbon bridge onto the amino-group functioned Zr-terephthalate metal-organic framework (MOF) UiO-66 to reduce the diffusion energy barrier and then improve the hydrogen spillover effect. Powder X-ray diffraction shows broad Pd peak and retained UiO-66-NH_(2) integrity after Pd decoration. The hydrogen uptake capacity show that UiO-66-NH_(2)-Pd exhibits best hydrogen storage performance than UiO-66-NH_(2) and pristine UiO-66. The hydrogen up taken in Pd decorated UiO-66 (UiO-66-NH_(2)-1Pd) was close to 4 wt% under 20 MPa at room temperature. Density functional theory (DFT) calculations show that hydrogen adsorption energy of UiO-66-NH_(2)-Pd was −0.5897 eV, which was much lower than that of UiO-66-NH_(2) (−0.3716 eV) and UiO-66 (−0.2975 eV). Ultimately, Pd decorated NH_(2) group functioned UiO-66 enable improve storage capacities through hydrogen spillover under ambient conditions which could satisfy the demand for sustainable energy, especially for the long-term storage energy media.

关键词： Hydrogen storage UiO-66-NH_(2) Pd decorated Spillover

Lightweight and robust rGO/sugarcane derived hybrid carbon foams with outstanding EMI shielding performance

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Journal of Materials Science & Technology 2020年第17期52卷 119-126页

作者： Lei Wang Xuetao shi Junliang Zhang Yali Zhang Junwei Gu Shaanxi Key Laboratory of Macromolecular Science and Technology School ofChemistry and Chemical EngineeringNorthwestern Polytechnical UniversityXi'an 710072China

Increasingly severe electromagnetic pollution is now in urgent need of materials with lightweight,excellent flame retardancy,and outstanding electromagnetic interference shielding effectiveness(EMI SE).Renewable source-derived carbon foams and graphene have attracted extensive attention due to their 3D porous structure and remarkable electrical conductivity().In this work,annealed sugarcane(ASC)was prepared by removal of lignin from sugarcane via hydrothermal reaction,followed by annealing *** graphene oxide(GO)was filled by vacuum-assisted impregnation process and thermally annealed to obtain the ASC/reduced graphene oxide(rGO)hybrid *** the loading of rGO is 17 wt.%,the ASC/rGO hybrid foam(density,of 0.047 g/cm^3)exhibits the optimal of 6.0 S/cm,EMI SE of 53 dB,specific SE(SSE=SE/)/thickness(t)of 3830 dB·cm^2/g,and compressive strength of 1.33 MPa,which is 76%,36%,13%and 6%higher than those of ASC,***,ASC/rGO presents excellent flame retardancy,thermal stability,and heat insulation,which remains constant under burning on an alcohol lamp and presents low thermal conductivity of 115.19 mW(m·K),close to the requirement for heat *** effect of ASC and rGO not only significantly increase of ASC/rGO,but fully utilizes the capability of ASC and rGO to attenuate electromagnetic waves by virtue of unique porous structures and abundant *** kind of lightweight EMI materials with excellent mechanical property,shielding performance,flame retardancy,and heat insulation is expected to tackle the key scientific and technical bottleneck problems of EMI materials,and will greatly expand the application of carbon nanomaterials in the field of aerospace industry.

关键词： Electromagnetic interference Annealed sugarcane/rGO Porous structure Carbon nanomaterials

Human-Like Decision-Making of Autonomous Vehicles in Dynamic Traffic Scenarios

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IEEE/CAA Journal of Automatica Sinica 2023年第10期10卷 1905-1917页

作者： Tangyike Zhang Junxiang Zhan jiamin shi Jingmin Xin nanning Zheng National Key Laboratory of Human-Machine Hybrid Augmented Intelligence National Engineering Research Center for Visual Information and ApplicationsXi’an 710049 Institute of Artificial Intelligence and Robotics Xi’an Jiaotong UniversityXi’an 710049China Momenta Shanghai 201804China

With the maturation of autonomous driving technology, the use of autonomous vehicles in a socially acceptable manner has become a growing demand of the public. Human-like autonomous driving is expected due to the impact of the differences between autonomous vehicles and human drivers on *** human-like decision-making has become a research hotspot, a unified theory has not yet been formed, and there are significant differences in the implementation and performance of existing methods. This paper provides a comprehensive overview of human-like decision-making for autonomous vehicles. The following issues are discussed: 1) The intelligence level of most autonomous driving decision-making algorithms;2) The driving datasets and simulation platforms for testing and verifying human-like decision-making;3) The evaluation metrics of human-likeness;personalized driving;the application of decisionmaking in real traffic scenarios;and 4) The potential research direction of human-like driving. These research results are significant for creating interpretable human-like driving models and applying them in dynamic traffic scenarios. In the future, the combination of intuitive logical reasoning and hierarchical structure will be an important topic for further research. It is expected to meet the needs of human-like driving.

关键词： Autonomous vehicles decision-making driving behavior human-like driving

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Heat Recuperation for the Self-Condensing CO_(2)Transcritical Power Cycle

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Journal of Thermal Science 2024年第5期33卷 1630-1641页

作者： PAN Lisheng shi Weixiu SUN Yin SUN Yiwei WEI Xiaolin State Key Laboratory of High-temperature Gas Dynamics Institute of MechanicsChinese Academy of SciencesBeijing 100190China School of Environment and Energy Engineering Beijing University of Civil Engineering and ArchitectureBeijing 100044China

The supercritical CO_(2)Brayton cycle has potential to be used in electricity generation occasions with its advantages of high efficiency and compact *** on a so-called self-condensing CO_(2)transcritical power cycle,a model was established and four different layouts of heat recuperation process were analyzed,a without-recuperation cycle,a post-recuperation cycle,a pre-recuperation cycle and a re-recuperation *** results showed that the internal normal cycle's share of the whole cycle increases with increasing the cooling pressure and decreasing the final cooled *** load in the supercritical heater decreases with increasing the cooling *** perspective of performance,the re-recuperation cycle and the pre-recuperation cycle have similar thermal efficiency which is much higher than other two *** thermal efficiency and net power output have a maximum value with the cooling pressure,except in the condition with the final cooled temperature of 31℃.Considering both the complexity and the economy,the pre-recuperation cycle is more applicable than the other *** 35℃of the final cooled temperature,the thermal efficiency of the pre-recuperation cycle reaches the peak 0.34 with the cooling pressure of 8.4 MPa and the maximum net power output is 2355.24 kW at 8.2 MPa of the cooling pressure.

关键词： CO_(2)transcritical power cycle heat recuperation process self-condensing

Interplay between geometric and electronic structures of Pt entities over TiO_(2) for CO oxidation

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Science China Chemistry 2024年第2期67卷 705-714页

作者： Xixiong Zhang Wen shi Shaobo Han Yong Li Wenjie Shen School of Chemistry Dalian University of TechnologyDalian116024China State Key Laboratory of Catalysis Dalian Institution of Chemical PhysicsChinese Academy of SciencesDalian116023China

Monodispersed Pt colloids with a mean size of 2 nm were deposited uniformly on the {110} facets of a rod-shaped rutile TiO_(2),forming a well-defined Pt/TiO_(2) *** treatment of this precursor at elevated temperatures re-dispersed the Pt particles into clusters and ***-calcination at 673 K partially oxidized the Pt particle surface,while calcination at 773 K yielded Pt Oxclusters of 1.6 nm in 7–8 atomic *** calcination at 873 K formed a mixture of raft-like PtO_(x) clusters(1.6 nm,1–2 atomic layers) and cationic *** tested for CO oxidation at 373 K,the Pt particles showed a higher activity than the Pt Oxclusters,whereas the cationic single-atoms were much less *** H_(2)-reduction at 473 K converted the partially oxidized Pt particles into the metallic species,but they were encapsulated by TiO_(2)–xoverlayers because of the strong metal–support interactions,which decreased the activity dramatically.H_(2)-reduction of the PtO_(x) clusters at473 K enhanced the fraction of metallic Pt species without changing the size and geometry,and promoted the activity substantially.H_(2)-treatment of Pt single-atoms at 473 K increased the activity only moderately because most Pt species still kept at cationic *** results straightforwardly differentiated the catalytic behavior of Pt particles,clusters and single-atoms at the same metal loading and over the same TiO_(2) support,and further demonstrated that the electronic structures of Pt entities played a decisive role in the catalytic oxidation,in addition to the specified sizes.

关键词： Pt/TiO_(2)catalyst size effect Pt clusters active sites electronic structures CO oxidation

Dynamics of k-essence in loop quantum cosmology

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Chinese Physics C 2021年第4期45卷 451-461页

作者： jiali shi jian-Pin Wu College of Physical Science and Technology Bohai UniversityJinzhou 121013China Center for Gravitation and Cosmology College of Physical Science and TechnologyYangzhou UniversityYangzhou 225009China

In this paper,we study the dynamics of k-essence in loop quantum cosmology(LQC).The study indicates that the loop quantum gravity(LQG)effect plays a key role only in the early epoch of the universe and is diluted in the later *** fixed points in LQC are basically consistent with those in standard Friedmann-Robertson-Walker(FRW)*** most of the attractor solutions,the stability conditions in L Q C are in agreement with those for the standard FRW *** some special fixed points,however,tighter constraints are imposed thanks to the LQG effect.

关键词： k-essence loop quantum cosmology dynamics of dark energy