The analysis, which is on teacher professionalism from the different epistemological approaches such as idealist approach, social constructivist approach and activist approach, indicates that we should reflect the issues critically and try to find the institutional and ideological factors that impede the promotion of teacher professionalism.
对理想型、社会建构型、行动型等各种关于教师专业性认知取向的分析表明,必须对教师专业性议题进行批判性反思,找出各种束缚教师主体性发挥的制度性和意识形态上的因素,才能确定教师专业性提升的起点和方向。
On constructing universities instructor staff of action-research-type;
论建设行动研究型高校辅导员队伍
The structure,transmission ratio,power-flow and meshing efficiency of 2K-V type planetary transmission is thoroughly analyzed by the discretization method and thereby are discovered the reasons why this kind of gear train possesses much merits that the volume is small,the weight is light,the transmission ratio is big and the meshing efficiency is high.
应用离散分析方法,深入分析了2K-V型行星传动的结构、传动比、功率流和啮合效率,从而揭示出这种轮系具有体积小、重量轻、传动比大和啮合效率高等优点的原因。
Aiming at the problems such as the failure of submunition in flight and the lack of evaluated subsamples in range test of tactical missile,a flight dynamics model of submunition is provided through analyzing the motion law of submunition and the influence of environmental factors and the aerodynamic factors.
针对战术导弹靶场试验中存在的子弹飞行故障和子弹鉴定子样不足等问题,通过分析子弹运动规律及环境诸因素对子弹飞行弹道的影响,综合考虑子弹气动外形等因素,建立了子弹飞行动力学模型。
The flight dynamics model for a small-scale unmanned helicopter was developed in this paper using system identification.
文中首先将小型无人直升机视为六自由度刚体并运用牛顿定律建立小型无人直升机通用飞行动力学模型,然后在忽略小型无人直升机纵横向耦合的基础上将所建的飞行动力学方程进行纵横向分离并参数化,接着以小型无人直升机的通用纵横向参数化模型为辩识基础模型,以小型无人直升机(以Yamaha R-50为例)飞行数据为输入输出数据,利用系统辩识方法中的最小二乘、极大似然、遗传算法作为辩识方法按照各自的辩识原理和步骤进行迭代分别确定了参数模型中未知参数的值,随后在基础模型中代入参数值得到小型无人直升机的纵横向飞行动力学模型,最后将所建立模型的输出值(其输入数据是飞行数据,输出是预报值)与飞行数据进行分析和比较。
Flight Dynamics Modeling for Rotorcraft Flying Quality Evaluation;
直升机飞行动力学模型与飞行品质评估
In the flight kinetic model of cannonball and racket, discriminating and identifying the resistance coefficients is the important task.
在弹箭飞行动力学模型中,阻力系数的识别是一项重要任务。
Then the flight dynamics model of the ECR helicopter was constructed.
以此为基础,建立了电控旋翼直升机的飞行动力学模型。
General dynamic model of aeroengine's rotor system during maneuvering flight
机动飞行时发动机转子系统动力学统一模型
Research on Dynamics Modeling and Control Algorithm of Flapping Micro Aerial Vehicle;
扑翼微型飞行器动力学建模与控制算法研究
Comparative Evaluation of Unsteady Aerodynamic Mathematic Models of Aircraft
飞行器非定常气动力数学模型的对比分析
Research on Flight Dynamics of Flying Wing Micro Air Vehicles
飞翼式微型飞行器飞行动力学特性研究
Research on Motion Planning of Flying Robot for Overhead Powerline Inspection Based on Dynamic Model
基于动力学模型的电力线巡检飞行机器人运动规划
helicopter flight dynamics
直升飞机飞行动力学
Stratospheric Autonomous Airship: Model, Dynamics and Control
平流层自治飞艇：模型、动力学和控制
Flight Simulation of Table Tennis Ball;
乒乓球飞行运动学模型的建立与仿真
Identification of Flight Dynamics Model of Model-scale Helicopter in Hover Condition
模型直升机悬停状态下飞行力学模型辨识
On an Unsteady Aerodynamics Model for Pitching-Oscillating Body at High Angle of Attack
飞行器快速俯仰产生大迎角非定常气动力数学模型研究
Dynamics Modeling and Simulation of Tethered Stratospheric Aircraft;
绳索平流层飞行器动力学建模与仿真
Some Dynamic Problems in Micro Air Vehicles;
微型飞行器中的若干动力学问题研究
Kinematics Analysis of New Flight Acceleration Simulator
一种新型动态飞行过载模拟器及其运动学分析
Modeling and Simulation of a Small-Scale Unmanned Helicopter;
小型无人直升机的飞行力学建模与仿真
rocket flight aerodynamics
火箭飞行空气动力学
