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教育与教学研究 2022年第2期36卷 81-94页

作者：云建辉云南农业大学云南昆明650201

沿边地区高校举办境外办学是沿边地区开放发展的重要内容,是促进我国和沿边国家(地区)文化相融、民心相通的桥梁。我国沿边地区开发开放发展战略、沿边地区地缘优势发挥需求及其高等教育自身发展要素共同推动沿边地区高校“走出去”。... 详细信息

沿边地区高校举办境外办学是沿边地区开放发展的重要内容,是促进我国和沿边国家(地区)文化相融、民心相通的桥梁。我国沿边地区开发开放发展战略、沿边地区地缘优势发挥需求及其高等教育自身发展要素共同推动沿边地区高校“走出去”。沿边地区高校境外办学也形成了其独特的办学模式、治理模式及人才培养模式,与此同时,存在高等教育输出能力有限、针对性政策支持不足、可持续发展困难、区域和功能优势发挥不足等困境。因此,我国要给予沿边地区境外办学更多支持,加强沿边地区高校国际化办学能力建设,发挥沿边地区高校境外办学基础性、先导性作用;完善境外办学法律政策建设,发挥沿边地区境外办学优势;将境外办学纳入国家、地区发展战略,为沿边地区境外办学提供经费支持;加强顶层设计、制度创新,提升沿边地区高校境外办学适应能力。

关键词：沿边地区高校境外办学驱动要素运行特征推进策略

Internationalized Talents Cultivation of yunnan and South-Asia Propelled by Joint Efforts of Government, University and Enterprise On International Exchange and Cooperation Among yunnan and South-Asia Under ＂The Belt and Road Initiative＂

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Chinese Business Review 2016年第3期15卷 143-148页

作者： Zhu Yaoshun Li Shunqin yun jianhui Chen Liang yunnan Agricultural University Kunming China

"The Belt and Road Initiative" needs internationalized talents. To deepen the international cooperation of higher education with South-Asia countries depends on the cooperation and joint efforts from government, universities, and enterprises, which aimed at promoting internationalized talents" development. What"s more, they should verify their responsibilities and strengthen their relationships and connects, jointly improving international talents cultivation of yunnan and South-Asia countries. Therefore, more high quality talents with high identity for "The Belt and Road Initiative" will be cultivated, which will promote the economic development of yunnan province and South-Asia countries.

关键词：东南亚国家国际化人才人才培养国际合作国际交流云南省企业高校

Life-cycle assessment of batteries for peak demand reduction

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Journal of Electronic Science and Technology 2023年第4期21卷 20-34页

作者： Dylon Hao Cheng Lam yun Seng Lim jianhui Wong Siti Nadiah M.Sapihie Department of Electrical and Electronic Engineering Universiti Tunku Abdul RahmanKajang43000Malaysia Group Research&Technology Division PETRONASBandar Baru Bangi43650Malaysia

At present,a life-cycle assessment of energy storage systems(ESSs)is not widely available in the literature.Such an assessment is increasingly vital nowadays as ESS is recognized as one of the important equipment in power systems to reduce peak demands for deferring or avoiding augmentation in the network and power generation.As the battery cost is still very high at present,a comprehensive assessment is necessary to determine the optimum ESS capacity so that the maximum financial gain is achievable at the end of the batteries’lifespan.Therefore,an effective life-cycle assessment is proposed in this paper to show how the optimum ESS capacity can be determined such that the maximum net financial gain is achievable at the end of the batteries’lifespan when ESS is used to perform peak demand reductions for the customer or utility companies.The findings reveal the positive financial viability of ESS on the power grid,otherwise the projection of the financial viability is often seemingly poor due to the high battery cost with a short battery lifespan.An improved battery degradation model is used in this assessment,which can simulate the battery degradation accurately in a situation whereby the charging current,discharging current,and temperature of the batteries are intermittent on a site during peak demand reductions.This assessment is crucial to determine the maximum financial benefits brought by ESS.

关键词： Degradation estimation Maximum net savings Peak demand reduction State of health(SOH)estimation

Influence of the replacement of alkoxyl with alkylthienyl on photovoltaic properties of two small molecule donors for organic solar cells

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Science China Chemistry 2017年第10期60卷 1340-1348页

作者： Shaoqing Zhang Liyan Yang Delong Liu Chang He Jianqi Zhang yun Zhang jianhui Hou School of Chemistry and Biology Engineering University of Science and Technology Beijing Beijing 100083 China State Key Laboratory of Polymer Physics and Chemistry Beijing National Laboratory for Molecular Sciences Institute of Chemistry Chinese Academy of Sciences Beijing 100190 China Key Laboratory of Nanosystem and Hierarchical Fabrication National Center for Nanoscience and Technology Beijing 100190 China

Two benzo[1,2-b:4,5-b￠]dithiophene(BDT)-based small molecule(SM) donor materials with identical conjugated backbones but different substitution groups, named as DRTB-O and DRTB-T, were well explored to demonstrate the influence of the replacement of alkoxy with alkylthienyl on their photovoltaic properties in fullerene-based and fullerene-free organic solar cells(OSCs). The study shows that the two SM donors possess similar absorption spectra and energy levels but different crystalline structures in solid films. The carrier transport property and phase separation morphologies of the blend films have also been fully investigated.By employing PC71 BM as the acceptor, the power conversion efficiency(PCE) of DRTB-O:PC71BM and DRTB-T:PC71BM based devices were 4.91% and 7.08%, respectively. However, by blending with IDIC, the two SM donors exhibited distinctly different photovoltaic properties in fullerene-free OSCs, and the PCE of DRTB-O:IDIC and DRTB-T:IDIC based devices were 0.15% and9.06%, respectively. These results indicate that the replacement of alkoxyl with alkylthienyl in designing SM donor materials plays an important role in the application of fullerene-free OSCs.

关键词：有机太阳能电池烷氧基取代光伏特性小分子功率转换效率固体薄膜二苯并噻吩富勒烯

乡村振兴战略下脱贫地旅游发展“内卷化”风险及其防范对策

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企业经济 2022年第4期41卷 105-114页

作者：邓小海肖洪磊云建辉贵州省社会科学院农村发展研究所贵州贵阳550002 云南农业大学人文社会科学学院云南昆明650201 云南农业大学科技处云南昆明650201

旅游发展在解决地区贫困问题中发挥了重要作用,并成为该地区未来发展的重要手段和实施乡村振兴的重要路径选择。然而,乡村振兴战略下脱贫地旅游发展可能出现后续支撑不足引发的资源沉没风险、市场定位失准引发的经营风险以及过度卷入引... 详细信息

旅游发展在解决地区贫困问题中发挥了重要作用,并成为该地区未来发展的重要手段和实施乡村振兴的重要路径选择。然而,乡村振兴战略下脱贫地旅游发展可能出现后续支撑不足引发的资源沉没风险、市场定位失准引发的经营风险以及过度卷入引发的依赖风险等“内卷化”风险,并可能带来降低居民福祉、延缓乡村振兴进程等危害。脱贫地旅游发展“内卷化”风险是脱贫地旅游发展更高诉求和内在既有局限相互作用产生的结果。对此,需要精准识别这些风险,并从认知定位、政策机制、产业发展三个层面防范和应对脱贫地旅游发展“内卷化”风险及其危害的发生。

关键词：乡村振兴脱贫地旅游发展内卷化风险

A 40dB,100MHz CMOS IF Variable Gain Amplifier for DVB-C Receivers

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A 40dB,100MHz CMOS IF Variable Gain Amplifier for DVB-C Rece...

Large-Area Monolayer n-Type Molecular Semiconductors with Improved Thermal Stability and Charge Injection

2005 6th International Conference on ASIC

作者： Tinghua yun Li Yin Shoulong Tang jianhui Wu National ASIC System Engineering Technology Research Center Southeast University

ISBN: (纸本)0780392108;9780780392106;0780392108;9780780392106

＜正＞A CMOS IF VGA used for DVB-C receivers is presented in this paper.The VGA core is based on current-steering structure,and several optimization methods are used to improve the linearity and stability.A novel CMOS exponential voltage generator is designed to realize the linear-in-dB control characteristic.The simulation results based on 0.25μm CMOS process indicate that the VGA can provide 40dB gain control range,the IIP3 at the minimum gain setting 17.2 dBm,and the minimum NF 7.8 dB.The overall current dissipation is less than 23 mA at 3.3V supply voltage.

关键词： Digital video broadcasting Linearity Voltage control Gain control Character generation Noise measurement Optimization methods CMOS process Feedback circuits Radio frequency

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Chinese Physics Letters 2023年第3期40卷 68-73页

作者： Sai Jiang Lichao Peng Xiaosong Du Qinyong Dai Jianhang Guo jianhui Gu Jian Su Ding Gu Qijing Wang Huafei Guo Jianhua Qiu yun Li School of Microelectronics and Control Engineering Changzhou UniversityChangzhou 213164China National Laboratory of Solid-State Microstructures School of Electronic Science and EngineeringCollaborative Innovation Center of Advanced MicrostructuresNanjing UniversityNanjing 210093China

We fabricated monolayer n-type two-dimensional crystalline semiconducting films with millimeter-sized areas and remarkable morphological uniformity using an antisolvent-confined spin-coating method.The antisolvent can cause a downstream Marangoni flow,which improves the film morphologies.The deposited crystalline monolayer films exhibit excellent thermal stabilities after annealing,which reveals the annealing-induced enhancement of crystallinity.The transistors based on the n-type monolayer crystalline films show linear output characteristics and superior electron mobilities.The improved charge injection between monolayer films and Au electrodes results from the energy level shift as the films decrease to the monolayer,which leads to a lower injection barrier.This work demonstrates a promising method for fabricating air-stable,low-cost,high-performance,and large-area organic electronics.

关键词： monolayer crystalline annealing

考虑多约束指标的直流微电网虚拟电容控制方法

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电工技术学报 2022年第S01期37卷 277-287页

作者：张赟王毅孟建辉刘宝新能源电力系统国家重点实验室(华北电力大学) 保定071003

作为解决高度电力电子化直流微电网低惯性问题的一种有效途径,虚拟电容控制在实际工程应用中还需满足一定约束条件以保证系统安全可靠运行。为此,综合考虑蓄电池荷电状态、直流电压变化率、变流器瞬时输出功率及变流器单位时间内输出功... 详细信息

作为解决高度电力电子化直流微电网低惯性问题的一种有效途径,虚拟电容控制在实际工程应用中还需满足一定约束条件以保证系统安全可靠运行。为此,综合考虑蓄电池荷电状态、直流电压变化率、变流器瞬时输出功率及变流器单位时间内输出功率等影响因素,提出一种考虑多约束指标的虚拟电容控制方法。首先,通过分析各约束指标改进了虚拟电容计算公式,不同运行工况可依据指标侧重程度调节对应权重值,所得虚拟电容经公式变换后用于实时修正内环电流参考值以改变蓄电池侧功率输出,在直流微电网稳定运行的前提下尽可能提高设备长期安全运行能力;其次,采用小信号建模分析法揭示所提控制方法中主要控制参数对系统稳定性的影响规律,为关键参数取值提供了依据;最后,通过搭建控制器级硬件在环测试平台验证了所提控制方法的有效性及稳定性分析的正确性。

关键词：直流微电网虚拟电容多约束指标稳定性分析硬件在环

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基于虚拟惯性控制的多光储单元协同运行研究

电网技术 2021年第5期45卷 1921-1931页

作者：孟建辉赵彭辉王毅张赟新能源电力系统国家重点实验室(华北电力大学) 河北省保定市071003

基于虚拟同步发电机控制的光储单元在电力系统中的比重逐步增加,多光储单元之间的不同特性导致其同时运行时存在一定的协同配合问题,为较好实现基于虚拟惯性控制的多光储单元协同运行,文章提出一种对各单元虚拟惯量进行灵活调节的多光... 详细信息

基于虚拟同步发电机控制的光储单元在电力系统中的比重逐步增加,多光储单元之间的不同特性导致其同时运行时存在一定的协同配合问题,为较好实现基于虚拟惯性控制的多光储单元协同运行,文章提出一种对各单元虚拟惯量进行灵活调节的多光储单元协同控制策略。首先,通过高通滤波和滑动滤波对系统中的功率扰动进行频次区分,高频扰动时,优先选择超级电容器提供惯性支撑,超级电容容量不足时,通过虚拟惯量的协同调节使蓄电池和超级电容协调出力,并根据荷电状态差异分配各蓄电池端出力。低频扰动时选择蓄电池提供所需惯性支撑,考虑蓄电池之间的荷电状态差异与各个换流器的容量差异,引入模糊控制,在防止蓄电池过充过放和保护换流器安全运行的基础上,合理分配低频扰动时系统所需的惯性支撑,实现各储能端的安全运行与系统的频率稳定。同时,建立多端系统小信号模型,利用根轨迹法分析主要控制参数对系统稳定性的影响。最后,通过硬件在环实验平台验证所提协调控制策略的有效性与优越性。

关键词：混合储能虚拟惯性分频控制协同运行荷电状态模糊控制