目的：制作图 32.1 所示的木纹材质效果。 要点：木纹材质是使用最多的材质纹理之 一，本例介绍的是一种制作较细腻、 逼真的木纹材质的常用方法。主要应 用 Clouds、Add Noise、Motion Blur、 Twirl、Pinch 滤镜等工具完成

1. Why we introduce the concepts of work and energy? F ma CWE theorem r r total = CWE theorem Conservation of energy (More universal) 2. About the systems that we discuss Ignore the size, internal structure, internal motion, deformations, and thermal effects

All around us: wheels, skaters, ballet, gymnasts, helicopter, rotors, mobile engines, CD disks, … Atomic world: electrons— “spin”, “orbit”. Universe: planets spin and orbiting the sun, galaxies spin, …

Raphan T, Matsuo V, Cohen B (1979). Velocity storage in the vestibulo-ocular reflex arc (VOR). Experimental Brain Research 35:229-248. Henn V, Cohen B, Young LR (1980). Visual-vestibular interaction in motion perception and the generation of nystagmus

Muscles Active while Lengthening Consider the example of ordinary exercise, lets say one of the running events in the Olympics. Muscle functions to stop the motion of the athlete as often as it does to start it. When a load larger than isometric tetanus tension To is applied to a muscle in a tetanic state of activation, the muscle lengthens at a constant

I. Choose the Correct Answer 1. A particle moves with position given by r ti j = 3 ˆ + 4 ˆ v , where r v is measured in meters when t is measured in seconds. For each of the following, consider only t > 0. The magnitude of the angular momentum of this particle about the origin is （ B ）

Part Part I Structure and Vocabulary Sn ection A Directions: Beneath each of the following sentences, there are four choices marked A, B, C and entenc D. Choose the one that best completes the sentence. Mark your answer on the ANSWER SHEET. (5 points) At the last conmmittee meeting, the motion that the sale of the alcoholunlawful was defeated

Repair(修复) As cells and tissues are being injured, events that contain the damage and prepare the surviving cells to replicate are set into motion

JOINT REPLACEMENT PROSTHESES Fit -Anatomy Function -Kinematics; Range of Motion Fixation Bone cement, bone interdigitation with an irregular surface, bone ingrowth into a porous coating Tribology

Aircraft Lateral dynamics Using a procedure similar to the longitudinal case, we can develop the equations of motion for the lateral dynamics