Lecture-15-SFM
学术英语听力课文翻译unit5
Unit5Suicide on Campus在校园内自杀Anchor: Good morning, everybody. I’m expecting all of you to gather here for the half-hour Early Show. Today, parents and students alike are constantly reminded of the problems like drug and alcohol abuse, and unsafe sex on college campuses. But relatively few are warned about suicide. And suicide is second only to accidents as a leading cause of death among college students.主持人：早上好，大家。
我希望你们都能为了半小时的早期节目集合在这里。
今天，家长和学生都在不断地提醒大学校园里像药物和酒精滥用和不安全的性行为的问题。
但相对较少的人警告说，自杀。
自杀是仅次于大学生意外死亡的主要原因。
Our Early Show correspondent Tracy Smith reports on this very real danger that often goes undiscussed. Hello, Tracy. 我们早期的节目记者特雷西史密斯报道这个经常讨论的非常现实的危险。
你好，特雷西。
Tracy Smith: Hi, Teresa. I know that today’s topic －campus suicides －is obviously weightier than the others we have talked about before. But we cannot give up eating for fear of choking. It is high time we looked at the issue face to face. A study by the American College Health Association showed that 15 percent of students meet the criteria for clinical depression. Although it’s a topic cloaked in stigma and shame, more colleges and universities are choosing to confront it, rather than wait until it’s too late. They have begun to look seriously into the reasons and seek solutions to the problem and actively intervene. Now let’s watch a short film and get some hint of a young college guy’s tragedy.特雷西：嗨，特蕾莎。
Lesson-15A-present-for-Li-Ming说课稿
L e s s o n-15A-p r e s e n t-f o r-L i-M i n g说课稿(总5页)--本页仅作为文档封面，使用时请直接删除即可----内页可以根据需求调整合适字体及大小--Lesson 15A present for Li Ming说课稿我说的是冀教版八年级英语第三册第三单元第15课，这一课，我将从以下几个方面谈谈：一教材分析本单元的主要话题是买礼物，本课为本单元的第三节课，主要讲述Jenny and Brian 去衣服店买礼物的过程，教学内容与学生的实际生活比较密切，容易让学生运用简单的英语进行交流和交际。
二教学目标1、知识与技能：使学生学会本课的生词及短语：present, clothing. Excited, blow, blow out, size, as ,try, try on, fit, another, bright 和买东西时要说的话。
2、过程方法：精讲精练,由易到难,由浅入深,循序渐进地深化教学内容3、情感目标：通过教学使学生提高尊重别人和重视别人生日的意识。
三、教学重、难点重点： does the clerk greet people?2. Know about the knowledge of choosing fit clothes.难点：Grasp the knowledge of choosing clothes from different sizes and styles.四、学生分析本课的教学对象为八年级学生，在设计教学过程中，抓住学生感兴趣的话题、利用学生爱表现的特点，将知识融入到活动中，并充分给予鼓励和肯定，让学生说有成就感，有收获感。
这样就会让每个学生在学习中感受自己存在的重要性，从而使教学更容易。
五、教学设想及设想依据在设计本课时，在学生学习基础知识，运用技能的同时，着重考虑了学生学习兴趣和能力的培养。
在生活中寻找体裁，在学科中寻找融合点。
费曼物理学讲义 英文版
费曼物理学讲义英文版Feynman Lectures on PhysicsPhysics is a fascinating and complex field of study that has captivated the minds of countless individuals throughout history. One of the most renowned and influential figures in the world of physics is Richard Feynman, whose legendary lectures on the subject have become a cornerstone of scientific education. The Feynman Lectures on Physics, originally published in the 1960s, are a testament to Feynman's extraordinary ability to explain complex concepts in a clear and engaging manner.Feynman's approach to teaching physics was unique and groundbreaking. Rather than simply reciting facts and formulas, he emphasized the importance of understanding the underlying principles and the interconnectedness of various physical phenomena. His lectures were not merely a collection of dry, theoretical discussions, but rather a dynamic exploration of the natural world, where he encouraged his students to question, experiment, and discover.One of the key strengths of the Feynman Lectures on Physics isFeynman's ability to simplify complex ideas without sacrificing their depth or accuracy. He had a remarkable talent for breaking down seemingly daunting concepts into their most fundamental components, making them accessible to a wide range of audiences, from seasoned physicists to curious laypeople.Throughout the lectures, Feynman's infectious enthusiasm and genuine love for the subject matter shine through. He was not content to merely transmit information; instead, he sought to ignite a passion for learning and discovery in his students. His lectures were peppered with thought-provoking analogies, engaging demonstrations, and a keen sense of humor, all of which served to make the study of physics more engaging and enjoyable.One of the most notable aspects of the Feynman Lectures on Physics is the breadth and depth of the topics covered. From the fundamental laws of mechanics and thermodynamics to the intricacies of quantum mechanics and the mysteries of the universe, Feynman's lectures provide a comprehensive and authoritative exploration of the physical world. Each lecture is meticulously crafted, with Feynman guiding the reader through complex ideas step by step, building a solid foundation of understanding.Perhaps one of the most striking features of Feynman's teaching style is his ability to make the seemingly abstract and theoreticalconcepts of physics come alive. He often used practical examples and thought experiments to illustrate the principles he was discussing, helping his students to visualize and internalize the material. This approach not only made the lectures more engaging but also reinforced the relevance and applicability of physics in the real world.Another remarkable aspect of the Feynman Lectures on Physics is the way in which Feynman challenged his students to think critically and independently. He did not simply present information as a set of immutable facts; instead, he encouraged his students to question assumptions, to explore alternative perspectives, and to develop their own analytical and problem-solving skills. This emphasis on active learning and critical thinking has been a hallmark of Feynman's legacy, inspiring generations of physicists and scientists to approach their work with a similar sense of curiosity and intellectual rigor.The Feynman Lectures on Physics have become a revered and influential work in the field of physics education. They have been translated into numerous languages and are widely used as a reference and teaching resource around the world. The lectures have not only shaped the understanding and appreciation of physics for countless individuals, but they have also served as a model for effective and engaging scientific communication.In conclusion, the Feynman Lectures on Physics are a testament to the genius and pedagogical prowess of Richard Feynman. Through his innovative teaching methods, his deep understanding of physical principles, and his unwavering dedication to inspiring curiosity and discovery, Feynman has left an indelible mark on the field of physics and the way it is taught and learned. The lectures continue to be a source of inspiration and enlightenment for students and scholars alike, and their enduring legacy is a testament to the transformative power of knowledge and the joy of scientific exploration.。
rqcen化学讲义
rqcen化学讲义（中英文实用版）英文文档：The RQCEN Chemistry Lecture Notes provide an overview of the fundamental principles and concepts in chemistry.The lecture notes are designed to serve as a comprehensive resource for students studying chemistry at the high school or undergraduate level.The first section of the lecture notes covers the basic building blocks of matter, including atoms, molecules, and ions.It also discusses the periodic table of elements, which is organized based on their atomic number and electron configuration.The second section focuses on chemical bonding and molecular structure.It explains the different types of chemical bonds, such as ionic, covalent, and metallic bonds, and describes the factors that influence bond strength and stability.The section also covers the VSEPR theory, which is used to predict the molecular geometry of molecules based on the number of bonding and non-bonding electron pairs around the central atom.The third section delves into the properties of matter, including physical and chemical properties.It discusses the concepts of solubility, boiling point, melting point, and density, and explains how these properties can be used to identify and characterize substances.The fourth section covers the principles of chemical reactions, including stoichiometry, reaction rates, and equilibrium.It explains how to balance chemical equations, calculate the amount of product formed in a reaction, and determine the rate at which a reaction occurs.The section also discusses Le Chatelier"s principle, which describes how changes in temperature, pressure, and concentration can affect the equilibrium of a chemical reaction.The fifth section explores the applications of chemistry in various fields, such as medicine, environmental science, and industry.It discusses the development of new drugs, the impact of chemical pollutants on the environment, and the use of catalysts in industrial processes.Overall, the RQCEN Chemistry Lecture Notes provide a comprehensive introduction to the study of chemistry, covering the fundamental principles and concepts that are essential for further study in the field.中文文档：RQCEN化学讲义提供了化学基本原理和概念的概述。
12-AMMC-Lecture-2015-5-15
Example: CaC2O4.H2O
11.68%
18.32%
30.75%
Weight loss: 1st<2nd<3rd MW: H2O<CO<CO2
Example: CaC2O4.H2O
weight loss/weight loss 1st 2nd 3rd MW /MW 1st 1 1.57 2.63 H2O-18 2nd 0.64 1 1.68 CO-28 3rd 0.38 0.60 1 CO2-44
Examples: crystallization and melting Second order transitions where the first derivatives of thermodynamic potentials by temperature are 0 and the second derivatives are not 0 2 G G 0 S 0, 2 T p T p
formal teaching consists of lectures -回复
formal teaching consists of lectures -回复Formal teaching consists of lectures –an in-depth explorationIntroduction:Formal teaching, often associated with traditional education systems, is characterized by structured classroom settings and lectures delivered by teachers. Lectures have long been a cornerstone of formal teaching methods, allowing educators to impart knowledge and engage students in a systematic manner. In this article, we will delve into the concept of formal teaching through lectures, exploring its benefits, limitations, and potential future developments.I. The role of lectures in formal teaching:Lectures serve as a fundamental tool in formal teaching due to their ability to convey vast amounts of information to a large group of students simultaneously. By presenting comprehensive content and explaining complex concepts, educators can provide a solid foundation for learning. Lectures also allow for the inclusion of visual aids, demonstrations, and real-life examples, enhancing students' understanding of the subject matter.II. Benefits of lectures in formal teaching:1. Structured learning: Lectures provide a structured framework for learning, enabling students to follow a predefined curriculum and progress systematically through the course material. This structure facilitates the development of a strong foundational knowledge base.2. Efficient transfer of information: Lectures allow educators to cover a wide range of content efficiently. Through organized presentations, they can condense information and present it in a concise and organized manner, ensuring that students receive a comprehensive overview of the subject matter.3. Expert guidance: Lectures provide students with direct access to expert knowledge. Skilled educators have the ability to synthesize complex ideas, draw connections, and offer valuable insights, ultimately guiding students towards a deeper understanding of the subject.III. Limitations of lectures in formal teaching:1. Passive learning: Lectures often follow a one-way communication pattern, providing limited opportunities forinteractive engagement. This passive learning experience can hinder students' active participation, critical thinking, and the development of problem-solving skills.2. Information overload: The sheer amount of information presented in lectures can overwhelm some students, making it difficult for them to absorb and retain knowledge effectively. The fast-paced nature of lectures can also inhibit deeper levels of understanding and reflection.3. Individual differences: Lectures cater to a diverse group of learners, each with unique learning preferences and needs. This standardized approach may not effectively accommodate individual learning styles, potentially leaving some students disengaged or struggling to fully grasp the material.IV. Future developments in formal teaching through lectures: While lectures remain a staple in formal teaching, advancements in technology and pedagogy offer opportunities for innovation and improvement. To address the limitations of traditional lectures, teachers can incorporate the following strategies:1. Interactive elements: Utilizing multimedia resources, such as videos, animations, and interactive quizzes, can enhance student involvement and promote active learning during lectures. Incorporating discussions, group activities, andquestion-and-answer sessions can also encourage student engagement.2. Flipped classrooms: This approach involves students reviewing lecture materials before class, allowing class time to be devoted to discussions, problem-solving, and hands-on activities. Flipped classrooms empower students to take an active role in their learning and foster deeper understanding through application.3. Blended learning: Combining traditional lectures with online resources and platforms can offer students a more personalized learning experience. Online modules, virtual simulations, and discussion forums can complement face-to-face lectures, accommodating diverse learning needs and encouragingself-paced learning.Conclusion:Formal teaching consisting of lectures remains a prevalent methodin education systems worldwide. While lectures provide several benefits, such as structured learning and efficient information transfer, they also have limitations, including passive learning and information overload. However, by incorporating innovative strategies such as interactive elements, flipped classrooms, and blended learning, educators can enhance the effectiveness of lectures and create a more engaging and inclusive learning environment. As education continues to evolve, formal teaching through lectures will adapt, leveraging technology and pedagogical advancements to better serve the needs of diverse learners.。
Lecture 15
Unit Testing
• In many organizations, unit testing is an informal activity performed by software engineers on their own modules with little or no test documentation.
What do we Verify in White-Box Testing
• White box testing involves the testing of the software code for the following:
▫ Internal security holes
▫ Broken or poorly structured paths in the coding processes ▫ The flow of specific inputs through the code
Unit Testing
• Each part tested individually • All components tested at least once • Errors picked up earlier
• Scope is smaller, easier to fix errors
Why Unit Test?
Unit Testing Integration Testing
Big Bang Incremental
White-Box Testing
White-Box Testing
• White-Box testing is also called :▫ ▫ ▫ ▫ Structural testing Glass Box testing Clear Box testing Open Box testing
class15-slides
FINE-7650
19
Discussion Homework
Topic: Is it a good time to buy bonds now? You may vote (1) Yes (2) No or (3) It depends. Then please explain your arguments for your vote. Below are several links to articles that may help you become familiar with this topic:
FINE 7650 Basics of Interest Rate Risk Management
Professor Hongtao Li Fall 2016
FINE-7650
1
ห้องสมุดไป่ตู้
Today’s Goals
• Why convexity • Definition of convexity • How to use convexity
FINE-7650
15
Convexity: Example
Example. Suppose the yield curve is flat at 6%, and you bought 100 5-year, 4% coupon bonds with faces of $1,000, exposing you to IR risk. Suppose that rates increase by 1% to 7%, how much would the bond price fall? Given that the yield curve is flat, the price of the bond is easy to compute, P = ($40/0.06) × (1-1/1.065) + $1,000/1.065 = $915.75 The duration of this bond is 4.611 years
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Rank Theorem
Copyright Mubarak Shah 2003
How to find Translation?
From (A)
From (B)
(D)
Copyright Mubarak Shah 2003
From (C)
is projection of camera translation along x-axis
Copyright Mubarak Shah 2003
Approximate Rank
Approximate Rotation matrix
Approximate Shape matrix
This decomposition is not unique
Q is any 3X3 invertable matrix
Copyright Mubarak Shah 2003
Feature Points
Image points
Copyright Mubarak Shah 2003
Mean Normalize Feature Points
(A)
Copyright Mubarak Shah 2003
Orthographic Projection
Measurement Matrix in terms of Motion and Shape
From (C) (D)
2FXP
2FX3 3XP
2FX1
1XP
Copyright Mubarak Shah 2003
Measurement Matrix in terms of Motion and Shape
(B)
Motion
Shape
3XP
2FX3
Rank of S is 3, because points in 3D space are not Co-planar Copyright Mubarak Shah 2003
Without noise, the registered measurement matrix is at most of rank three.
Take Three images under different light sources
Photometric Stereo
Results
Structure from Motion
Copyright Mubarak Shah 2003
Shape from Motion: Moving Light Display
Mubarak Shah 2003
Approximate Rank
3 P-3 2F 3
P-3
3 P-3 3 P-3
Copyright Mubarak Shah 2003
P
Approximate Rank
The best rank 3 approximation to the ideal registered measurement matrix.
Copyright Mubarak Shah 2003
Orthographic Projection: Feature Points
3D world point
(C)
Orthographic projection
i, j, k are unit vectors along X, Y, Z
Copyright Mubarak Shah 2003
Structure from Motion
• • • • • • • • • S. Ullman Hanson & Riseman Webb & Aggarwal T. Huang Heeger and Jepson Chellappa Faugeras Zisserman Kanade • • • • • • • • • • Pentland Van Gool Pollefeys Seitz & Szeliski Shahsua Irani Vidal & Yi Ma Medioni Fleet Tian & Shah
• Use images taken under different illumination conditions to recover 3D shape.
Copyright Mubarak Shah 2003
Photometric Stereo
B= Albedo N=surface normal S=light source direction
Copyright Mubarak Shah 2003
Singular Value Decomposition (SVD)
If A is square, then are all square.
nxn
nxn
nxn
nxn
A O1O2
A1 O2 diag( 1 )O1 wj Copyright
i s
T f P
If Origin of world is at the centroid of object points
Copyright Mubarak Shah 2003
Registered Measurement Matrix
Copyright Mubarak Shah 2003
Registered Measurement Matrix
Copyright Mubarak Shah 2003
Singular Value Decomposition (SVD)
Theorem: Any m by n matrix A, for which ,can be written as
is diagonal are orthogonal mxn mxn nxn nxn
Shape from Motion
Problem
• Given optical flow or point correspondences, compute 3-D motion (translation and rotation) and shape (depth).
Copyright Mubarak Shah 2003
Copyright Mubarak Shah 2003
Rank Theorem for noisy measurement
The best possible shape and rotation estimate is obtained by considering only ~ 3 greatest singular values of W together with the corresponding left, right eigenvectors.
2FXP
2FX3 3XP
2FX1
1XP
Copyright Mubarak Shah 2003
Translation
Projected camera translation can be computed:
Copyright Mubarak Shah 2003
Noisy Measurements
• Without noise, the matrix must be at most of rank 3. When noise corrupts the images, however, will not be rank 3. Rank theorem can be extended to the case of noisy measurements.
How to determine Q: Newton’s Method
Jacobian
is error
Structure from Motion
Lecture 15
Copyright Mubarak Shah 2003
Shape From X
• Recovery of 3D (shape) from one or two (2D images).
Copyright Mubarak Shah 2003
Copyright Mubarak Shah 2003
Approximate Rank
SVD
2FXP
PXP
PXP
Copyright Mubarak Shah 2003
Singular Value Decomposition (SVD) • For some linear systems Ax=b, Gaussian Elimination or LU decomposition does not work, because matrix A is singular, or very close to singular. SVD will not only diagnose for you, but it will solve it.
Copyright Mubarak Shah 2003
Tomasi and Kanade Factorization
Orthographic Projection
Copyright Mubarak Shah 2003
Assumptions
• The camera model is orthographic. • The positions of “p” points in “F” frames (F>=3), which are not all coplanar, and have been tracked. • The entire sequence has been acquired before starting (batch mode). • Camera calibration not needed, if we accept 3D points up to a scale factor.