1. Introduction

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英语写作第一节课introduction

18
Comparing some terms
―subject‖, ―topic‖ and ―title‖
19
―subject‖, ―topic‖ and ―title‖
• Subject: is the thing, person, idea or event that is being discussed, written about, or considered. e.g. the subject of a discussion, letter, book • Topic: The topic is a particular subject that is written about or discussed. • Title: The title of a book, play, piece of music is the name given to it by the person who wrote it or composed it, or the name by which it is usually known.
Choose which are subjects and topics? sports, foreign students in U.S Universities, what makes a champion soccer player, education, why I play soccer, my first trip abroad, open classrooms and traditional classrooms, one tour in the USA, world travel, music in elementary school
It moves down and up conforming to the Writing task Meanwhile, her double chin is her rhythm. another great feature, which seems to give her voice more power. Above all, you can see what an extraordinary woman she is, so can you guess who she is?

英语论文分析学习第1节 introduction

What Is an Introduction?

What questions will readers ask when reading an essay: 1. What topic am I going to learn about? 2. Why is that topic important? 3. Do I know the topic already? What do I know already? An introduction aims to answer these 3 questions.
Contents of an introduction

Example:
"Numerous studies on the utilization of plant proteins as a partial or complete replacement for fish meal in diets have been conducted using various freshwater and marines fishes (Lovell, 1987; Tacon et al., 1983; Murai et al., 1989a; Cowey et al., 1974).
Contents of an introduction
Q: What are the ways to establish a topic? A: Claiming centrality General to specific Previous research Describing of the background Definition of key words

[英语学习]unit-1-Introduction

7.publishing in Denmark 丹麦出版业 • 8.Publishing is flourishing. 出版事业繁荣发
展。
• a Panorama of Publishing 出版业概况 • book industry 图书出版业 • book community 书业团体
Questions on part 1
• 1 [+ obj] : to prepare and produce (a book, magazine, etc.) for sale ▪ It's a small company that only publishes about four books a year. ▪ The university press publishes academic titles. ▪ The newspaper is published daily. 2 : to have something you wrote included in a book, magazine, newspaper, etc. [no obj] ▪ There is a lot of pressure for professors to publish regularly. [+ obj] ▪ He has not published anything for a long time. 3 [+ obj] : to include (an article, letter, photograph, etc.) in a magazine or newspaper ▪ The magazine published two of my stories.
3. intriguing

introduction 造句

introduction 造句introduction 造句:1.He made theself-introduction and everyone shook hands with him.他作了自我介绍，大家都与他握了手。

2.Please be aware that this is only a selection of essential requirements ofthe organic standards, meant as an introduction.请注意，这只是一个有机标准必需要求的精选摘要，仅作介绍。

3.The article givessort of a general introduction concerning the back story of the game, and the general feel .文章整体介绍了游戏故事背景和对其的印象。

4.Therefore,the enemy would like to ask all the detailed re-usedan introduction.所以想问问都用过的冤家详细的再引荐下。

5.About this trip here first simple introduction, the specific content, everybody can consult brochure or visit our websit e to understand.关于这次旅程就先简单介绍到这里，具体的内容，大家可以参照小册子或是登陆我们的网站进行了解。

6.I also wonder if it is possible for research articles to be produced by a historical and popular introduction.我想，是否有可能通过历史的、通俗的介绍来撰写研究论文。

unit_1_introduction[1]

1.1 Text(2)
• According to the information direction transmitted in channel, modern communication systems can be divided into the simplex communication systems, half-duplex communication systems, and full-duplex communication systems; • According to the number of information communicating approaches, modern communication systems can be divided into the serial communication systems and the parallel communication systems; • According to the control methods of information transmitted in channels, modern communication systems can be divided into the synchronous communication systems and the asynchronous communication systems; • According to the line connecting modes and signal interacting ways between signal source and destination, modern systems can be divided into point-to-point communication systems, one-to-multi-points communication systems and multi-to-multi-points communication systems.

1 INTRODUCTION 传感与检测技术

SENSORS AND SIGNAL CONDITIONING
1 INTRODUCTION TO SENSORBASED MEASUREMENT SYSTEM
1.1 GENERAL CONCEPTS AND TERMINOLOGY 1.1.1 Measurement Systems System: a combination of two or more elements, subsystems, and parts necessary to carry out one or more functions. The function of a measurement system: the objective and empirical assignment of a number to a property or quality of an object or event in order to describe it.
The best approach is to design systems insensitive to interference.
1.3 GENERAL INPUT-OUTPUT CONFIGRATION
Common method: . negative feedback.
y ( x yH ( s ))G ( s ) Y ( s) G ( s) 1 X (s) 1 G (s) H (s) H x
1.3 GENERAL INPUT-OUTPUT CONFIGRATION
1.3.2 Compensation Techniques Reduce the effects of interfering and modifying inputs:
• Change the system design • Add new elements to it

1.Introduction+structures

I. Classification of Writings
A. Literature Writings B. Scientific Writings (factual writings)
II. Principles for Good Scientific Writing (1)
Content: original Organization/Structure: complete, coherent Language: correct 文风有独创性；主题处理好；中心思想明确；行文逻辑严密；选辞精确；句子、段落表达完整；阅读效果好；没有错别字及语法、标点符号的错误。
Brief & Simple
Though I usually go to the country for a walk during the weekend, I decided to spend the whole day in the city for a change last Sunday. I went to the Tian’anmen Square and the Zhongshan Park. It was so early when I left home that the streets around my neighborhood were deserted. Without the usual crowds and traffic, everything was strangely quiet.
Writing Suggestions:
Plan your writing (audience awareness / target readers). Ignore the language. Write and rewrite. Find readers. Keep writing. Find suitable methods from handbooks and guides. There is many a way to write.

情景英语1(introduction)

Scene 1: You are the new comer to the office. You meet your new coworker Peter Smith in the office. Please introduce each other and have a very nice greeting.

A: David! It’s great to see you! you look as young as ever And you must B: Philip, ___________________________. be Roger. C: Hi. A: Yes, this is my youngest son Roger. Roger, I want you to meet the king dancer of tango of Harvard— David Lin. C: Nice to meet you, Mr. Lin. B: Well, you are so tall. How old are you this year? C: Seven. we haven’t seen each other for years since our graduation, B: So ______________________________________________, Philip. Well, how’ve you been? A: Oh, working too hard.

A: Good evening, Mr. Wu. B: Good evening, Mr. Smith. A: Have you met my wife, Juliet? I haven’t had the pleasure B: No,______________________________. A: Mary, this is Mr. Wu, my Chinese friend. C: How do you do, Mr. Wu? Welcome. B: How do you do? Have a glass of wine Mr. Wu. A:_____________________, let me introduce you to some of my guests. And___________________________________________. B: Thank you.

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Hexagonal Close-Packing- octahedral sites
Radius ratio: r+/r- (2r-)2 + (2r-)2 = (2r- + 2r+)2 (√2-1) r- = r+ r+/r- = 0.414
Cubic Close-Packing (fcc)
Interstitial site- cubic - (2r-)2 + (2√2r-)2 = (2r- + 2r+)2 (√3-1) r- = r+ r+/r- = 0.73
Non-Close-Packing- Body-Centered Cubic (bcc)
a
Coordination number: 8 Packing efficiency: - √3a = 4r - Vunit cell = a3 = (64r3)/3√3 - Vatoms = (4/3)πr3 X 2 atoms = (8/3)πr3 - Efficiency = Vatoms/Vunit cell = √3 π /8 = 68%
Crystal Structure in Ionic Crystals
r+/r0.22 – 0.41 0.41 – 0.73 0.73 – 1.00
type
Tetrahedral Octahedral cubic
Coordination number (CN)
4 (ccp or hcp) 6 (ccp or hcp) 8 (sc)
Hexagonal Close-Packing- octahedral sites
Why hcp containing n spheres has n octahedral sites? - # of atoms: 2 atom (12 X 1/6, at 12 corners) + 1 atom ( 2 X 1/2 , at top and bottom layer) + 3 atoms (inside) = 6 atoms in unit cell - # of octahedral sites: 3 X 1 (between bottom and middle layer) + 3 X 1 (between top and middle layer) = 6 sites - 6 sites/ 6 atoms = 1
<References> 1. 결정학 개론, 정수진. 2. Introduction to Materials Science for Engineers, James F. Shackelford, 7th ed. 3. Introduction to solid state physics, Charles Kittel, 7th ed. 4. Sol-gel science: The physics and chemistry of sol-gel processing, C. Jeffrey Brinker. 4. Transmission Electron Microscopy: A Textbook for Materials Science, David B. Williams. 5. 태양전지공학, 이준신. 6. Nanochemistry, Geoffrey A. Ozin.
a
Face-centerd cubic (fcc) • √2a = 4r, a = 2√2r • Vunit cell = a3 = 16√2r3 • Vatoms = (4/3)πr3 X 4 atoms = 16/3 πr3 • Packing efficiency = Vatoms/Vunit cell = π /3√2 = 0.74 (74%) • 4 octahedral sites • 8 tetrahedral sites
Hexagonal Close-Packing- tetrahedral sites
a
Radius ratio: r+/r- a = (2r-)sin 45o = √2r- body diagonal of cubic cell = √6r- Because cations and anions are in contact, r+ + r- = √6r-/2 r+/r- = 0.225
LECTURER: Joo, Jin (주진) Office: Rm #103 E01, Phone: 950-5585, E-mail: joojin@knu.ac.kr OUTLINE This class will cover fundamentals for understanding useful properties in solid state including preparation characterization methods. TEXTBOOK Solid State Chemistry-An introduction, Lesley E. Smart, 3rd ed.
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Close-Packing
Close-packing - Most efficient way using space. - 74% packing efficiency. - Coordination number: 12 (6 in the same layer + 3 (below) + 3 (above). - Two type of interstitial sites (i) Octahedral: n spheres → n sites (ii) Tetrahedral: n spheres → 2n sitesChຫໍສະໝຸດ ice of Unit Cells
Non-Close-Packing- Primitive Cubic
Top view
Side view
Non-Close-Packing- Primitive Cubic
Coordination number: 6 The simplest way packing spheres. Packing efficiency: - a = 2r - Vunit cell = a3 = 8r3 - Vatoms = (4/3)πr3 X 1 atoms = (4/3)πr3 - Efficiency = Vatoms/Vunit cell = π/6 = 52.4% Only example is Po
GRADING Midterm Exam 100 points Final Exam 100 points Quiz 100 points Attendance 100 points (late attendance: only 20 min of late attendance is allowed!) * Absence from class more than 8 times,1/4 of whole class, will be graded F Office hour : For 1 hour after each class.
Lattices and Unit Cells
Lattice: a periodic array of “dots” (or lattice points). Unit cell: the simplest portion of a lattice that can be repeated by translation to cover the entire 1-D, 2-D, or 3-D space. Crystal structure = Lattice + Basis of the Lattice Point.
Chapters 5 Defects and Non-Stoichiometry Chapter 6 Chapter 7 Chapter 8 Chapter 9 Carbon-Based Electronics Zeolites and Related Structures Optical Properties of Solids Magnetic and Dielectric Properties
3-Dimensional Unit Cells
Four types of lattices
1. The primitive unit cell—symbol P—has a lattice point at each corner. 2. The body-centred unit cell—symbol I—has a lattice point at each corner and one at the centre of the cell. 3. The face-centred unit cell—symbol F—has a lattice point at each corner and one in the centre of each face. 4. The face-centred unit cell—symbol A, B, or C— has a lattice point at each corner, and one in the centres of one pair of opposite faces.
Hexagonal Close-Packing- tetrahedral sites
Side view
Top view
Unit cell
Tetrahedral sites
Why hcp containing n spheres has 2n tetrahedral sites? - # of atoms: 1 atom (at 8 corners) + 1 atom (between top and bottom layers) = 2 atoms in unit cell - # of tetrahedral sites: 2 X 1 (between top and middle layer) + 2 X 1 (at 4 edges) - 4 sites/ 2 atoms = 2