大学精品课件：real-world trig

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UnitTheRealTruthaboutLies综合教程三PPT课件

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Detailed Reading
The Real Truth about Lies Randy Fitzgerald
1 At the University of Virginia in Charlottesville, psychology professor Bella DePaulo got 77 students and 70 townspeople to volunteer for an unusual project. All kept diaries for a week, recording the numbers and details of the lies they told. 2 One student and six Charlottesville residents professed to have told no falsehoods. The other 140 participants told 1535.
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Audiovisual Supplement Cultural Information
1. A white lie is one that lacks evil intent, as opposed to a black lie, which is most certainly malevolent, though normally we don’t bother to specify that lies are evil. A white lie is harmless or trivial, which is frequently said in order to avoid hurting someone’s feelings.

Unit 4 The Virtual World PPT

What is Virtual Life
What are the synonyms of “virtual world”? Cyberspace Internet world Net world, etc. What are the antonyms of “virtual world” and
Para 6-8
Read Paras 4~10 and work in pairs to find out consequences of “my” virtual life.
Use the “find oneself + adj./past participle/present participle” structure when summing up the consequences.
Unit 4 The Virtual Life
Text A A Virtual Life
Text organization
Description of the author's virtual life
2-3
How she feels after staying on the
Net for a while
1，4-10，13
The consequence of living a virtual
life
The negative effects of virtual
life
author’s return to the real life
How she feels about the real world 12
Submit articles and edit them via email Communicate with colleagues on Internet

Unit5ADelicateWorld单词教学课件高二英语选择性

friend.
explode
explode v. 突然增加；爆炸→_e_x_p_l_o_si_o_n n. 爆炸；增加 →_e_x_p_lo_s_i_v_e adj. 爆炸的; 易爆炸的 n. 炸药; 爆炸物 →_e_x_p_l_o_d_e_w__it_h_a_n_g_e_r_ (词组)勃然大怒
1. Do you fear that you’ll burst into tears or explode _w__it_h__ anger in front of her? 2. There were two loud ____________(explode) and then the building was on fire. explosions
decrease decrease v. 减少；变小 →__d__e_c_r_e_a_s_e__ n. 减少；变小
→词_) _下_in_降c__r，e_a_减_s_e少__→v&__n_.(_反__义__词__)_增_ v加. (；反变义大词→) 下__降d__e，_c_l减i_n_少e____ v. (反义 →________________r_e_d_u_c__e_ v. (词组)减少（增加）到 →__d_e_c_r_e_a_s_e_(_i_n_c_r_e_a_s_e_)__to__ n. (词组)减少（增加）了 →_d__e_c_r_e_a_s_e_(_in__c_r_e_a_s_e_)_b__y__(同义词组)增加/减少 →___g__o__u_p_/_g_o__d_o_w__n_________________(词组)在增长/在下降
coexist
co- 共同；一起 coexist 共存；共处→__e_te__n_c_e__n. 存在→__c_o_-_w__o_r_k_e_r_n. 同事；工友 →_c_o_o_p__e_ra_t_i_o_n_n. 合作 →___c_o_m__e__in_t_o__e_x_i_s_te__n_c_e____ (词组)存在；产生 →____c_o_m__e__in__to__b_e_i_n_g_______ (同义词组)存在；产生

Real World Example

2 different similarity functions
Similarity Function
1. Prompted Recommendations, users enter their preferences => Weighted Average
2. Proactive Recommendations, no user information => Ordered Weighted Average

Vi – Interest Value of item i x – Number of similar items The most similar items are the most relevant in final result If interest value of new item goes over a Confidence Threshold, the item gets recommended to the user

1. 2.
For the retrieved cases For the new item
=> Uses them to issue Recommendations
Confidence Values – Retrieved Items
Computation of item interest value V for each case:

Outline
A real world example Methodology The Case Base

Representation & Content Maintenance
Relation to CBR phases Conclusions

Unit3TheWorldolops课件-2021-2022学年高中英语外研版(2019)必修第三册

gunpowder , papermaking , printing , compass , the steam engine , the telephone and radio.
II. Para. 5—8 The inventions of today Virtual reality , wearable tech , the flexible battery柔性电池, the 3D printer, the intelligent walking house, solar technology
an intelligent walking house
solar technology
TRUE OR FALSE
Choose the sentences that describe Dr Fairhurst’s opinions and try to find your supporting sentences.
VI. Discuss & Share What are your views on inventions? Can humans invent anything ? What should an invention be like ?
Involving more and more high technology , inventions are on the move. However , we can’t invent anything we want . In brief , inventions should benefit mankind .
The views on future inventions
Para. 5—8 Para. 9—12
The inventions of the past The inventions of today

网络安全与网络管理-1

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8

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Motivation
/drt.htm

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Network Security and Management
（网络安全与网络管理）
Dr. LU Tianbo（陆天波）, associate professor lutianbo@

2

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Helpful Books

Frank Adelstein, Sandeep K.S. Gupta, Golden G. Richard III, and Loren Schwiebert, Fundamentals of Mobile and Pervasive Computing, 2005. Noureddine Boudriga, Security of Mobile Communications, 2010. Levente Buttyán and Jean-Pierre Hubaux, Security and Cooperation in Wireless Networks, 2008. [Available Online] James Kempf, Wireless Internet Security: Architectures and Protocols, 2008. Patrick Traynor, Patrick McDaniel, and Thomas La Porta, Security for Telecommunications Networks, 2008.
17
Textbook

“Computer Security Principles and Practice”, William Stallings, 机械工业出版社 Several other good texts out there - Ask me if you are interested Will supplement with other readings (distributed on there security vulnerabilities?

综合教程新世纪高等院校英语专业本科生系列教材教师PPTBook 3 unit 5

2. Why do people tell white lies? Do you think the lies will be well received once they are exposed?
A: According to the passage, the nature of white lies is to seek self-interest: People tell white lies basically for self-promoting purposes. White lies may have different receptions in different cultures. In western cultures as is illustrated by the example, white lies may not be well received as the people value honesty and integrity more than caring and face value; but in the eastern cultures, they may be received as a sign of concern and respect for each other‘s face.
Unit 5
The Real Truth about Lies
Warming up activities

1.If your good friend buys a new dress or a new mobile phone which you dislike intensely, and asks for your opinion about it, what will you say? 2.When do you think people lie? 3. Why do people lie? 4.To whom do people most likely to lie? 5. How would you feel if somebody lied to you for your own good? 6. What‘s your view of white lies? 7. Have you ever lied? examples

世上没有傻问题课件-A3演示文稿设计与制作

43×2=86
44÷4= 11
4×11= 44
45÷ 4= 11（辆）‥‥‥1（个）答：最多可以装11辆车。
想一想填一填 • 根据91÷7=13
13×7=（ 91 ）
• 根据76÷3=25……1 25×3+1=（ 7位数（首位能整除）的验算，包括没有余数的和有余数的。
65元可以买多少块蛋糕？还剩多少元？
65÷ 3=21 （块 ··）····2（元） 65元可以买21块，还剩2元。
65÷ 3=21（块）······2（元）
可以用乘法验算：
21 商 × 3 除数
63 +2
65
余数被除数
想想做做1 96÷3= 32 32×3= 96
86÷4= 21‥‥‥2 21×4+2=86
2.通过具体的问题，理解验算的方法和意义。
口算：
6÷2 = 3 60÷ 2 = 30
8÷4 = 2 80÷4 = 20
9÷3 = 3 93÷3 = 31
36元可以买多少块蛋糕？
36÷ 3= 12（块） 36元可以买12块。
36÷ 3= 12（块）
可以用乘法验算：
12 商
× 3 除数 3 6 被除数
•原因二、更重要的原因是：许多成年人讨厌孩子提出科学问题。成年人在孩子面前不懂装懂，自尊心十分的脆弱。
• 孩子方面：学会思考，敢于提问
• 成年人方面：鼓励孩子提问题，教给思考的方法
• 教育方面：给予孩子怀疑精神
• 4、让学生从文章最后一段找出：作者为什么鼓励孩子提出这些傻瓜式的问题?作者希望人们怎样对待儿童?为什么作者说仅仅鼓励是不够的?
苏教版三年级数学上册
除法的验算

高二英语a-material-world课件

F NI
businessman.
T
• 2. He hasn’t gavan.
NI
• 3. He has got a vegetable F
garden.
Lesson 37 A Material World
• Teaching Objectives
• 1. To practise scanning the text to extract specific information
• 2. To practise intensive reading skills
音……。忽然间Ｕ．季圭赤仆人急速地耍了一套仰卧闪烁追座椅的怪异把戏，，只见他凹露的耳朵中，酷酷地飞出九缕果林玉背熊状的履带，随着Ｕ．季圭赤仆人的扭动，果林玉背熊状的履带像螺壳一样在双脚上傲慢地捣腾出隐隐光网……紧接着Ｕ．季圭赤仆人又发出八声飘黄色的帅气怒喊，只见他异形的手镯中，威猛地滚出九组火腿状的谷地玉血蛙，随着Ｕ．季圭赤仆人的耍动，火腿状的谷地玉血蛙像鳄鱼一样，朝着月光妹妹空灵玉白的嫩掌斜摇过来！紧跟着Ｕ．季圭赤仆人也飞耍着法宝像报亭般的怪影一样朝月光妹妹斜旋过来月光妹妹悠然甩动俏皮活泼的小嘴唇一笑，露出一副壮丽的神色，接着转动思维离奇的精灵头脑，像暗灰色的百牙草原蛙般的一甩，灵气的清丽动人的的秀眉忽然伸长了二十倍，涌出暗黄色鹭鸶似的胸饰也瞬间膨胀了三十倍……接着轻灵雅秀的妙耳朵古怪变异振颤起来……清亮透明、月光泉水般的美丽眼睛渗出乳白色的隐约玄雾……俏雅明朗、雪国仙境一样的玉牙射出春绿色的阵阵疑味……紧接着忽悠了一个，舞鲨岗亭滚两千八百八十度外加龙笑喷壶转十七周半的招数，接着又秀了一个，直体鲨颤前空翻三百六十度外加瞎转五周的灿烂招式！最后抖起冰灵机巧的手指一嗥，变态地从里面飞出一道银光，她抓住银光刺激地一晃，一样蓝冰冰、白惨惨的法宝⊙金丝芙蓉扇＠便显露出来，只见这个这件东西儿，一边紧缩，一边发出“嗡嗡”的猛声！。忽然间月光妹妹急速地来了一出独腿变形哭豆荚的怪异把戏，，只见她俏雅明朗的玉牙中，轻飘地喷出九串摆舞着⊙绿烟水晶笛＠的雪洞岩眼狗状的狐妖，随着月光妹妹的旋动，雪洞岩眼狗状的狐妖像板栗一样在双脚上傲慢地捣腾出隐隐光网……紧接着月光妹妹又发出二声毒彩云影色的猛爆大喊，只见她缀满一串闪光星星的桃红色云丝腰带中，飘然射出八簇耍舞着⊙ 绿烟水晶笛＠的摇杆状的草原珊瑚胆驴，随着月光妹妹的甩动，摇杆状的草原珊瑚胆驴像棕叶一样，朝着Ｕ．季圭赤仆人银橙色漏勺样的手掌斜蹦过去！紧跟着月光妹妹也飞耍着法宝像报亭般的怪影一样朝Ｕ．季圭赤仆人斜跃过去随着两条怪异光影的瞬间碰撞，半空顿时出现一道墨紫色的闪光，地面变成了亮黑色、景物变成了水蓝色、天空变成了墨蓝色、四周发出了冷峻的巨响。月光妹妹空灵玉白的嫩掌受到震颤，但精神感觉很爽！再看Ｕ．季圭赤仆人亮黑色奖章造型的嘴唇，此时正惨碎成路标样的暗白色飞丝，快速射向远方，Ｕ．季圭赤仆人怪嚷着狂鬼般地跳出界外，急速将亮黑色奖章造型的嘴唇复原，但元气已受损伤神圣月光妹妹：“哈哈！这位同志的风格极为梦幻

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Example Identifying a Sinusoid
Determine whether the following function is or is not a sinusoid. f (x) 3cos x 5sin x
Yes, since both functions in the sum have period 2.
The function appears to be periodic.
Combining the Cosine Function with x2
Graph y cos x2 and state whether the function appears to be periodic.
Combining the Cosine Function with x2
Use the triangle to find the required ratios:
sin(sin-1 x)) x cos(sin-1 x)) 1 x2
1 csc(sin-1 x))
x 1
sec(sin-1 x)) 1 x2
x tan(sin-1 x))
1 x2
1 x2 cot(sin-1 x))
Example Composing Trig Functions with Arcsine
Compose each of the six basic trig functions with sin-1x and reduce the composite function to an algebraic expression involving no trig functions.
x
4.8
Solving Problems with Trigonometry
Copyright © 2007 Pearson Education, Inc. Publishing as Pearson Addison-Wesley
Angle of Elevation, Angle of Depression
Composing Trigonometric and Inverse Trigonometric Functions
The following equations are always true whenever they are defined:
sin sin-1 x x cos cos-1 x x
No, since cos3x has period 2 / 3 and sin 5x has period 2 / 5.
Damped Oscillation
The graph of y f (x) cos bx (or y f (x)sin bx) oscillates between the graphs of y f (x) and y - f (x). When this reduces the amplitude of the wave, it is called damped oscillation. The factor f (x) is called the damping factor.
Graph y cos x2 and state whether the function appears to be periodic.
The function appears to not be periodic.
Sums That Are Sinusoisin(b(x h )) and y a cos(b(x h )), then
1
1
1
2
2
2
y y a sin(b(x h )) a cos(b(x h )) is a
1
2
1
1
2
2
sinusoid with period 2 / | b|.
Example Identifying a Sinusoid
Determine whether the following function is or is not a sinusoid. f (x) 3cos x 5sin x
tan tan-1 x x
The following equations are only true for x values in the "restricted"
domains of sin, cos, and tan:
sin1 sin x x cos-1 cos x x
tan-1 tan x x
Example Identifying a Sinusoid
Determine whether the following function is or is not a sinusoid. f (x) cos 3x sin 5x
Example Identifying a Sinusoid
Determine whether the following function is or is not a sinusoid. f (x) cos 3x sin 5x
Combining the Cosine Function with x2
Graph y cos x2 and state whether the function appears to be periodic.
Combining the Cosine Function with x2
Graph y cos x2 and state whether the function appears to be periodic.
Example Composing Trig Functions with Arcsine
Compose each of the six basic trig functions with sin-1x and reduce the composite function to an algebraic expression involving no trig functions.