The Study of Character Species and Quantities of Characters' Teaching for the Junior Students in the Primary School

Beijing Normal University said it was investigating after Mr Kang posted an essay that went viral.

北师大表示，在康宸玮发布的文章被疯狂传播后，校方正在对相关情况进行调查。

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Beijing Normal University said it had started an anti-sexual harassment campaign and had strengthened campus security.

北师大表示，校方已经开展了打击性骚扰的专项行动，并加强了校园安保工作。

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The Influence Factor Analysis of the Library Information Resources Which Beijing Normal University Teacher Depends on

北师大教师依赖图书馆信息资源的影响因素分析

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A Comparative Study of Senior Teachers Training Plan between China and the United States

中美高中教师培养计划比较研究&以北师大4+2培养模式和美国加州长滩分校的高师培养计划为例

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At the same time, in various training and big graduate student in north teacher course a further studies is study that management theories that bigness influence impression, let me bringing the business enterprise to the CIS rather deep.

同时，在各类培训及北师大研究生课程班进修时学习的管理理论，让作者对CIS给企业带来的巨大影响印象颇深。

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After graduation, he was appointed as a teacher in Beijing Normal University in1981.

1981年毕业后何教授来到北师大任教。

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Degree: Ph.D. ( Beijing Normal University, 1998).

学位：博士（北师大，1998）。

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The way of neutral grounding in 380V LV distribution system was introduced and the characteristics of grounded and non grounded systems were analyzed.

本文介绍了380V低压配电系统中性点的接地方式，分析了接地与不接地系统特性。

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Now the capacity-voltage transformer ( CVT) is normally operating in a system earthed with large current, under a specific operation, however, it may run in a system without earthing.

电容式电压互感器（CVT）目前正常运行在大电流接地系统中，但在特定的操作下，可能运行于不接地系统。

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By MATLAB, the transient process of TV in ungrounded power system is simulated, both in normal service or in some kinds of grounding fault conditions. This paper discusses the magnetizing inrush current flowing through TV and the abnormal overvoltage of opened delta-winding.

用MATLAB软件仿真研究了中性点不接地系统中电磁式电压互感器在系统正常和接地故障运行的全过程，分析了TV励磁涌流造成熔丝熔断的规律性及开口三角绕组电压异常的原因。

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The ferroresonance, which results from the electromagnetic potential transformer in a 10 kV distribution system, is simulated and studied by the Electro-Magnetic Transient Program ( EMTP).

用EMTP仿真计算了10kV中性点不接地系统电磁式TV饱和引起的铁磁谐振。

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A New Measure to Eliminate the Ferromagnetic Syntonization in 10-35 kV Non-grounding System

一种消除10～35kV不接地系统铁磁谐振的新措施

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Study on the Single Phase-to-Grounding Fault Detection in 35 kV Networks with Isolated Neutral

35kV中性点不接地电力网单相接地故障检测研究

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For an ungrounded neutral low voltage power system in mine, its insulance ( r), capacitance ( C) and leakage resistance ( R) to the ground are three important parameters in determining the zero sequence voltage.

对于中性点不接地的矿井低压电网，其对地绝缘电阻r，电容C和漏电电阻R，是决定零序电压的3个重要参数。

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The Dividing Frequency Resonance and Damping Measure in Ungrounded Network& A Simulating Calculation of Networks by Means of EMTP

中性点不接地网络的分频谐振与消谐措施&用EMTP对网络的模拟计算

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Diffusion capacity ( DLco) of 315 asbestos workers without obvious radiological pulmonary changes and 314 healthy workers without history of exposure to industrial dust as controls were measured by means of CO single breath technique.

本文采用一次呼吸CO法，测定了315名石棉工人和314名作为对照的不接尘健康工人的弥散量，并测定了通气功能。

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Analysis of the Neutral, the low resistance grounding and arc suppression coil grounding through the advantages and disadvantages of three ways, using MATLAB simulation under different single phase grounding fault in the operation.

分析了中性点不接地、经小电阻接地和经消弧线圈接地三种方式的优缺点，用MATLAB对不同接地方式下单相接地故障时的运行情况进行了仿真。

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An effective method for preventing high voltage fuse of Pt from breaking in 10~ 35? Kv isolated neutral system

10～35kV中性点不接地系统中防止PT高压熔断器熔断的方法

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Study on Neutral Point Protection without Grounding for 220 kV Transformer

220kV不接地变压器中性点绝缘保护研究

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This paper has derived calculating formulas of arbitrary two point faults in neutral non-grounded power system by bus impedance matrix. An example of calculation is carried out with IBM computer.

本文推导出用结点阻抗矩阵进行中性点不接地系统中任意两点异相接地故障计算公式，并编制程序在IBM机上调试通过，最后进行了算例分析。

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