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“双减”背景下少年宫特色教学改革策略研究

黑龙江教师发展学院学报 2025年第1期44卷 109-112页

作者：刘烨黑龙江第二技师学院黑龙江绥化152001

“双减”政策的出台,标志着我国中小学素质教育得到了更进一步的发展,教育领域的减负治理由校内延伸到校外,少年宫作为校外教育的重要场所,是学校课后服务的重要载体。少年宫要把握机遇,明确自身定位,积极应对“双减”政策下对课后服务... 详细信息

“双减”政策的出台,标志着我国中小学素质教育得到了更进一步的发展,教育领域的减负治理由校内延伸到校外,少年宫作为校外教育的重要场所,是学校课后服务的重要载体。少年宫要把握机遇,明确自身定位,积极应对“双减”政策下对课后服务机构提出的新要求。基于“双减”政策背景下少年宫定位的变化,分析少年宫在教育内容、功能上的转变,探讨当下少年宫教学的现状和普遍存在的问题,进而有针对性地提出少年宫特色教学的改革策略,以期为我国少年宫的进一步发展提供参考。

关键词： “双减” 课后服务少年宫特色教学改革策略

A Criterion of Normality Concerning Holomorphic Functions Whose Derivative Omits a Function

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Chinese Annals of Mathematics,Series B 2011年第5期32卷 699-710页

作者： Xiaojun liu Yasheng ye Department of Mathematics College of Science University of Shanghai for Science and Technology Shanghai 200093 China

The authors discuss the normality concerning holomorphic functions and get the following result. Let F be a family of holomorphic functions on a domain D C C, all of whose zeros have multiplicity at least k, where k 〉 2 is an integer. And let h（z）≠ 0 be a holomorphic function on D. Assume also that the following two conditions hold for every f ∈F：（a） f（z） = 0 [f^（k）（z）｜〈｜h（z）｜; （b） f^（k）（z）≠ h（z）. Then F is normal on

关键词： Normal family Holomorphic functions Omitted function

Estimation of key surface parameters in semi-arid region and their impacts on improvement of surface fluxes simulation

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Science China Earth Sciences 2016年第2期59卷 307-319页

作者： liu ye GUO WeiDong SONG YaoMing Institute for Climate and Global Change Research School of Atmospheric Sciences Nanjing University College of Atmospheric Science Nanjing University of Information Science and Technology

Uncertainties in some key parameters in land surface models severely restrict the improvement of model capacity for successful simulation of surface-atmosphere interaction. These key parameters are related to soil moisture and heat transfer and phy- sical processes in the vegetation canopy as well as other important aerodynamic processes. In the present study, measurements of surface-atmosphere interaction at two observation stations that are located in the typical semi-arid region of China, Tongyu Station in Jilin Province and Yuzhong Station in Gansu Province, are combined with the planetary boundary layer theory to estimate the value of two key aerodynamic parameters, i.e., surface roughness length zorn and excess resistance κB-1. Multiple parameterization schemes have been used in the study to obtain values for surface roughness length and excess resistance κB-1 at the two stations. Results indicate that Zorn has distinct seasonal and inter-annual variability. For the type of surface with low-height vegetation, there is a large difference between the default value of Zorn in the land surface model and that obtained from this study, κB-1 demonstrates a significant diurnal variation and seasonal variability. Using the modified scheme for the estimation of Zom and κB-1 in the land surface model, it is found that simulations of sensible heat flux over the semi-arid region have been greatly improved. These results suggest that it is necessary to further evaluate the default values of various parameters used in land surface models based on field measurements. The approach to combine field measurements with atmospheric boundary layer theory to retrieve realistic values for key parameters in land surface models presents a great potential in the improvement of modeling studies of surface-atmosphere interaction.

关键词： Semi-arid region Turbulent transfer Surface roughness length Excess resistance Field experiments

Reactor protection system testing for the solid fuel thorium molten salt reactor

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Nuclear Science and Techniques 2016年第5期27卷 238-246页

作者： Zhen-Bao liu ye liu Gui-Min liu Jie Hou Shanghai Institute of Applied Physics Chinese Academy of Sciences Jiading campus Shanghai 201800 China University of Chinese Academy of Sciences Beijing 100049China

Safety system testing is one of the most rigorous and time-consuming requirements in the verification and validation process for reactor protection systems(RPSs).This paper presents the development of a test system for the fully digital and field-programmable gate array-based RPS of the solid fuel(SF) thorium-breeding molten salt pebble bed fluoride salt-cooled reactor(TMSR),denoted as the TMSR-SF1 project,developed by the Chinese Academy of *** test system is applied to the RPS to ensure that it fully meets its designed functions and system *** first introduce the testing principles and ***,the hardware component designs and the software program development of the test system are ***,the test process and test results are discussed and summarized.

关键词：反应堆保护系统试验过程固体燃料熔盐现场可编程门阵列测试系统钍设计功能

Effective AC and DC Responses of Nonlinear Composites at Higher Concentration

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Communications in Theoretical Physics 2008年第1期49卷 231-234页

作者： liu ye LI Zhi Institute of Atmospheric Physics the Chinese Academy of Sciences Beijing 100029 China Institute of Oceanology the Chinese Academy of Sciences Qingdao 266071 China Graduate University of the Chinese Academy of Sciences Beijing 100049 China

For higher concentration of inclusions, an effective medium approximation （EMA） method is used to investigate the bulk effective response of weakly nonlinear composites, which are subject to the constitutive relation of electric displacement and electric field, Dα = εαE ＋Xα｜E｜^2 E. As an example of three dimensions, under the external AC and DC electric fields Eapp = Eα（1 ＋ sinωt）, we have derived the general effective nonh＇near response of composites by the EMA method for higher concentration of spherical inclusions. Furthermore, the effective nonlinear responses at harmonics are predicted.

关键词： nonlinear composites effective response AC and DC electric fields

Efficient preparation of a four-photon cluster state with homodyne measurement via cross-Kerr nonlinearity

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Science China(Physics,Mechanics & Astronomy) 2011年第3期54卷 479-483页

作者： ZHAO ChunRan ye liu School of Physics & Materials Science Anhui University Hefei 230039 China School of Physics & Electronic Information Huaibei Normal University Huaibei 235000 China

A scheme is proposed for generating a multiphoton entangled cluster state among four modes. The scheme only uses Kerr medium, beam splitter and homodyne measurements on coherent light fields, which can be efficiently made in quantum optical laboratories. The photon in the signal mode is prepared in a superposition state of the vacuum state and one-photon state while the probe beam is initially set in a coherent state superposition. The strong probe mode interacts successively with multiple signal-mode photons, each causing a conditional phase rotation in the probe mode. Subsequent momentum quadrature homodyne measurement of the probe mode will project the photons in the signal mode into the desired entangled states. It is shown that under certain conditions, the four-photon cluster state can be generated with high fidelity and high success probability, and the scheme is feasible by current experimental technology.

关键词： cluster state cross-Kerr nonlinearity homodyne measurement entanglement

Finding a Probe for Extracting Information on the Momentum Dependent-Interaction in Heavy Ion Collisions

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Chinese Physics Letters 2010年第6期27卷 70-73页

作者： liu Jian-ye GUO Wen-Jun College of Mathematics-Physics and Information Tianshui Normal University Tianshui 741001 Institute of Modern Physics Chinese Academy of Sciences PO Box 31 Lanzhou 730000 Science College University of Shanghai for Science and Technology Shanghai 200093 Center of Theoretical Nuclear Physics National Laboratory of Heavy Ion Accelerator Lanzhou 730000

The effect of momentum-dependent interaction on the kinetic energy spectrum of the neutron-proton ratio （（n/p）gas）b（ Ek ） for 64Zn ＋64Zn is studied. It is found that （（n/p）gas）b（ Ek ） sensitively depends on the momentumdependent interaction and weakly on the in-medium nucleon-nucleon cross section and symmetry potential. Therefore （（n/p）gas）b（ Ek ） is a possible probe for extracting information on the momentum-dependent interaction in heavy ion collisions.

关键词： Zinc Extracting Information Collisions

Theoretical Performance Analysis of an Ejector Enhanced High-Temperature Heat Pump with Dual-Pressure Condensation and Evaporation

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Journal of Thermal Science 2022年第5期31卷 1367-1379页

作者： BAI Tao liu ye YAN Gang YU Jianlin Department of Refrigeration and Cryogenic Engineering School of Energy and Power EngineeringXi’an Jiaotong UniversityXi’an710049China

In this paper,an ejector enhanced high-temperature heat pump with dual-pressure condensation and evaporation is proposed to improve the system *** analyses of the system operation characteristics are conducted using energetic and exergetic *** performance comparisons among the basic cycle,parallel compression cycle,and ejector enhanced cycle are conducted with six different refrigerants,including R245fa,R600a,R1234ze(Z),R1336mzz(Z),R1224yd(Z),and R1233zd(E).The results demonstrate that environmentally-friendly refrigerant R1234ze(Z)would be a promising alternative *** with the basic cycle and parallel compression cycle at selected operation conditions,29.5%and 12.6%improvements in COP,and 16.7%and 11.1%higher system exergy efficiency are achieved in the ejector enhanced cycle on *** volumetric heating capacity of the ejector enhanced cycle is increased by 15.7%–21.7%.The ejector enhanced cycle outperforms the other two cycles in high-temperature heat pump applications at the large temperature lift and temperature rise in the heat *** assessment offers an option to improve the energy utilization efficiency of the high-temperature heat pumps.

关键词： thermodynamics exergy high-temperature heat pump ejector dual-temperature condensation/evaporation

A distributed computational cognitive model for object recognition

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Science China(Information Sciences) 2013年第12期56卷 5-17页

作者： liu YongJin FU QiuFang liu ye FU XiaoLan Tsinghua National Laboratory for Information Science and Technology Department of Computer Science and Technology Tsinghua University State Key Lab of Brain and Cognitive Science Institute of Psychology Chinese Academy of Sciences

Based on cognitive functionalities in human vision processing, we propose a computational cognitive model for object recognition with detailed algorithmic descriptions. The contribution of this paper is of two folds. Firstly, we present a systematic review on psychological and neurophysiological studies, which provide collective evidence for a distributed representation of 3D objects in the human brain. Secondly, we present a computational model which simulates the distributed mechanism of object vision pathway. Experimental results show that the presented computational cognitive model outperforms five representative 3D object recognition algorithms in computer science research.

关键词： distributed cognition computational model object recognition human vision system

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