Mesh parameterization based on edge collapse

Parameterizations that use mesh simplification to build the base domain always adopt the vertex removal scheme. This paper applies edge collapse to constructing the base domain instead. After inducing the parameterization of the original mesh over the base domain, new algorithms map the new vertices in the simplified mesh back to the original one according to the edge transition sequence to integrate the parameterization. We present a direct way, namely edge classification, to deduce the sequence. Experimental results show that the new parameterization features considerable saving in computing complexity and maintains smoothness.     

A Teaching Plan for Lesson 3, Unit 16

正Ⅰ.Teaching Aims and Requirements 1. By observing the picture and the title,students learn to predict the main idea of the text. 2. to get the students to understand the contents and the structure of the text by scanning reading.3.make students to develop the spirit of never giving up In the face of difficulty.Ⅱ.Teaching Key Points 1.To make clear to students the contents and the structure of the text 2. To enable students to get the main idea of the text     

Teacher’s Role in the Oral English Class

English speaking has been paid more attention today, especially in the age of globalization. Teachers are attempting to find out more effective methods to enhance the teaching results of English speaking. Facing the great demands and present difficulties of oral English classes, teachers have to conduct more study and practice to find out what roles that an oral English teacher has to take in the oral English classroom. Compared with the traditional teaching role in the English classroom, an oral English teacher has to fulfill more than one role in the classroom teaching so as to provide better learning conditions for students. Lacking more exposure to the real interaction with native speakers, students expect the oral English teacher to be a creator of the language environment. With various teaching and learning activities in the oral English classroom, the teacher has to be a good organizer to ensure every student to achieve improvement. An oral English teacher also has to correct students’language errors while ensuring the smooth progress of the classroom teaching. Only when an oral English teacher make clear what roles he or she has to take in the classroom can he or she achieve effective teaching.     

They Come Home at Last

一、故事内容 Look at this unhappy family： the father,the stepmother, the son named Tom and the daughter named Rose. The stepmother doesn＇t like Tom and Rose. She asks the father to take the children to the forest. She wants Tom and Rose to lose their way home. The father has to listen to her bad idea.     

Love and Time

Once upon a time,there was an island where all the feelings lived: Happiness,Sadness,Vanity and all of the others including Love. One day it was announced to all of the feelings that the island was going to sink to the bottom of the ocean.All the feelings prepared their boats to leave except Love.She wanted to hold out and try to save the     

Comparison of Two Attitudes Toward the Piano in The Piano Lesson

The Piano Lesson mainly focuses on the conflict caused by two opposite attitudes towards the heirloom-piano.The sister Berniece is determined to keep the piano and guard it,for she considers it as the " sacred icon" of the sacrificial history of her family.While the brother Boy Willie tries every way to sell it,desiring to make a fortune by buying a farm and work on it.Both attitudes have their limitations respectively,which forces the siblings to turn to the traditional way to solve the conflict.They then realize how to use the piano-the symbol of history and cultural legacy.That is to keep it and use it.     

Russia Faces a Shortage of Cosmonauts

Three people check into a hotel. They pay $30 to the manager and go to their room. The manager finds out that the room rate is $25 and gives $5 to the bellboy to return. On the way to the room, the bellboy reasons that $5 would be difficult to share among three people, so he pockets $2 and gives $1 to each person.     

He Is “Good”At History

Jack went to school to study history, but when he finished his first year, he didn't pass the exam and the teacher said to him, "You have to leave school." When the boy's father heard the news, he was worried. He came to the school to see the teacher. He found the teacher in the office and asked the teacher to let Jack study in the school the next year.     

Surface breakdown of printed circuit board under magnetic field with reduced pressure

Epoxy resin laminate onto which a pair of copper foil was printed was employed as test samples.The samples were placed in an artificial atmospheric chamber, which was vacuumed by a rotary pump from 100 kPa to 5 kPa.The magnetic field was produced by permanent magnets that were assembled to make E×B drift away from, into and parallel to the sample surface, respectively.Magnetic flux density was adjusted at 120 mT, 180 mT and 240 mT respectively.By applying a negative bias voltage between the electrodes, the time to surface breakdown was recorded.Obtained results show that when E×B is into the surface, the time to the breakdown is shortened;when E×B is away from the surface, the time to the breakdown is delayed;when E×B is parallel to the surface, the time to the breakdown remains approximately the same as the case without magnetic field.With the decrease of pressure, the time to the breakdown increases and the effect of magnetic field on breakdown appears to be strengthened.     

Unit 5 Part A Read and Write 教学设计

<正>〔教学目标〕1.Enable the students to learn the four skill sentences by heart:What is it doing?It’s eating bananas.What is she doing?She’s jumping.2.Enable the students to use the sentences to ask and answer questions.3.Help the students to understand the sentences:The elephant is drinking water with its trunk.〔教学重点〕1.Enable the students to learn the four skill