第一篇：新建二中英語備課組學(xué)術(shù)交流發(fā)言稿

新建二中英語備課組學(xué)術(shù)交流發(fā)言稿

各位專家老師，下午好：

我是陳嫻穎，現(xiàn)任教于新建二中高三年級，很榮幸能代表我校英語備課組應(yīng)大會組織者安排來此進(jìn)行英語備課組建設(shè)交流活動。我們希望通過對我校英語備課組建設(shè)及運(yùn)行的介紹和所遇問題的提出，能引起在座專家老師對中學(xué)英語備課組建設(shè)的關(guān)注，并幫助我們進(jìn)一步優(yōu)化備課組建設(shè)，以先進(jìn)的教育教學(xué)理念指導(dǎo)我們英語教學(xué)的開展。

新建二中，是一所建立于1980年的省級重點中學(xué)，現(xiàn)有學(xué)生6000多人，其中約80%來自于農(nóng)村。學(xué)生語言交流能力不足，現(xiàn)代信息匱乏，過分偏重理科學(xué)科的學(xué)習(xí)而忽視英語學(xué)科的重要性，這是我們英語教學(xué)工作面臨的最大問題。在我校，負(fù)責(zé)學(xué)科教學(xué)組織開展的備課組僅以年級劃分，即，就英語教學(xué)而言分別由高一至高三三個英語備課組負(fù)責(zé)。備課組又統(tǒng)一由英語教研組長指導(dǎo)管理。各組均由一位有著多年教學(xué)經(jīng)驗，曾進(jìn)行多項教學(xué)研究的骨干老師擔(dān)任組長，整體指導(dǎo)所處年級的英語教學(xué)工作。組內(nèi)成員中，經(jīng)驗豐富的老老師和活力進(jìn)取的年輕老師的比例一般為2：3，旨在促進(jìn)組內(nèi)互助成長。我們備課組的工作，主要體現(xiàn)在四個方面：集體備課，團(tuán)隊合作；編寫資料，牢抓實際；悉心專研，樂于交流；豐富活動，培養(yǎng)興趣。在此，我們想著重介紹下我們前兩個方面的做法及所遭遇的問題與困惑。

一，集體備課，團(tuán)體合作

＂備好課是上好課的前提＂，集體備課能夠集思廣益、取長補(bǔ)短、共享資源、提高效益。在每周二下午的備課組活動中，集體備課是最主要的常規(guī)工作之一。我校的集體備課遵循一般操作程序，即：初步研究教材，形成有自己思想的第一教案-----個案；在交流碰撞中形成有群體思想的集體教案----共案；根據(jù)集體教案分析確定自己的個案----特色教案；在教學(xué)實踐中反思共案的效果修訂共案-----最后教案。新課標(biāo)要求我們＂確立全新教學(xué)理念，優(yōu)化課堂教學(xué)方式；利用現(xiàn)代教育技術(shù)，拓寬英語學(xué)習(xí)渠道＂。而這些要求只有在集體參與討論研究的前提下，才能獲得最大效益。自兩年前我校開始這一備課模式以來，教師的綜合素質(zhì)得到了很大提高，學(xué)生學(xué)習(xí)效果也有不錯的提升。

當(dāng)然，集體備課并不僅僅局限于完成某天某單元的課程要求。新課標(biāo)指出教師應(yīng)注重＂從教學(xué)目標(biāo)的單一性向教學(xué)目標(biāo)的綜合性轉(zhuǎn)變，不斷學(xué)習(xí)新知識，發(fā)展新的教學(xué)策略。＂因此集體討論研究綜合性的教學(xué)目標(biāo)，并將其體現(xiàn)融合在每一堂課中也是我們集體備課的重要任務(wù)。在具體構(gòu)思設(shè)計課堂教案之前，我們會在教研組長及備課組長的統(tǒng)一領(lǐng)導(dǎo)下，盡量充分考慮多方因素制定詳盡的階段目標(biāo)計劃，以在保證課程目標(biāo)的前提下努力平衡學(xué)生語言知識及語言技能、樹立其正確情感態(tài)度、培養(yǎng)其學(xué)習(xí)策略。

＂從以知識為本的教育理念向以學(xué)生發(fā)展為本的教育理念轉(zhuǎn)變，重新認(rèn)識高中英語課程的目標(biāo)和定位；從以自我為中心向以人為本、以學(xué)生為主體轉(zhuǎn)變，樹立新的學(xué)生觀＂，這是新課程對我們教師提出的新挑戰(zhàn)。學(xué)生為主體的教學(xué)觀在集體備課中不僅體現(xiàn)在課堂教學(xué)策略的選擇上，更體現(xiàn)在分層教學(xué)和分類指導(dǎo)當(dāng)中。去年我擔(dān)任了高三三個不同層次文科班級的英語教學(xué)工作：普通班，實驗班，小班。通過備課組集體備課獲得共案之后，我會同其他教授實驗班及小班的老師分別進(jìn)行教案的再次討論修改，以求最為貼切地適合不同層次學(xué)生的學(xué)習(xí)需求。這里，我想分別以一節(jié)教材閱讀課和語法學(xué)習(xí)課為例，說明我們對分層教學(xué)的理解，并希望各位專家老師幫助發(fā)現(xiàn)存在問題及提出改正意見。

教材選修7Unit 5 Traveling abroad的第一堂閱讀課，其教學(xué)目的是在激發(fā)學(xué)生對travel abroad的興趣的基礎(chǔ)上，引導(dǎo)其對海外求學(xué)中可能遭遇的狀況及優(yōu)劣點的思考。在普通班進(jìn)行教學(xué)時，我們盡量使用最直接最明顯的提問引導(dǎo)方式，并在每項指令發(fā)出同時利用PPT呈現(xiàn)該指令，以消除學(xué)生對英語閱讀課的恐懼心理。而對于文章閱讀后的檢測問題，我們幾乎完全采用教材中compreheding中的題目，以便適應(yīng)普通班學(xué)生課前預(yù)習(xí)的習(xí)慣。而在實驗班，由于學(xué)生已有不錯的英語語言基礎(chǔ)，對于主題的引導(dǎo)，我們采用對話引入的方式，在看似不經(jīng)意的對話中導(dǎo)入并牽引課堂教學(xué)的進(jìn)行。PPT中指令的呈現(xiàn)明顯減少，以培養(yǎng)學(xué)生言語交流學(xué)習(xí)的習(xí)慣和能力。在小班，對于話題的引入和實驗班相同，只在課程的進(jìn)

程中更加注重學(xué)生的自主學(xué)習(xí)，如增添了更多的小組討論環(huán)節(jié)甚至個人presentation。這里我展示的是在小班所使用的課件。

語法學(xué)習(xí)課我們同樣盡力做到分層教學(xué)，這里我想以非謂語動詞的語法復(fù)習(xí)課為例。經(jīng)過前兩年的學(xué)習(xí)，學(xué)生對非謂語的用法已有了一定的認(rèn)識，卻依舊沒有形成有序的框架體系。在普通班進(jìn)行非謂語語法復(fù)習(xí)時，我們采用了我校程宗義老師的語法講解資料進(jìn)行從理論到實踐的一條一例式講解，以求學(xué)生對該語法大框架的勾勒。在實驗班及小班，我們采用了導(dǎo)學(xué)案的形式，先由幾個相關(guān)問題的提出引起學(xué)生對于所學(xué)知識的回顧，再通過涉及非謂語不同方面的例句例題引導(dǎo)學(xué)生將先前回顧的內(nèi)容應(yīng)用于問題的解決，最后指導(dǎo)學(xué)生以小組的形式勾勒該語法的知識導(dǎo)圖，最終在教師的參與下形成系統(tǒng)詳盡的知識體系。

集體備課，共同合作，是目前高中教育教學(xué)的一大趨勢，的確能更為充分地利用資源，提高效益，但卻讓我們面臨教學(xué)風(fēng)格多樣性缺失的問題。我們該如何在集體備課中保持自己獨(dú)特的教學(xué)風(fēng)格呢？同時，雖然我們竭力做好分層教學(xué)，但總覺得自己所做的有些流于形式卻苦于找不到問題癥結(jié)。在此我們詳盡地描述了我們集體備課的程序及對不同層次學(xué)生的教學(xué)過程，希望在座專家老師能幫助為我們指明改正方向。

二，編寫資料，牢抓實際

如今的信息時代，書店網(wǎng)絡(luò)給我們提供了豐富而多樣的教學(xué)資源。然而，＂多＂未必一定＂好＂，＂好＂未必一定＂適用＂。每個學(xué)校每個階段每個學(xué)生都有著自己獨(dú)特的、不可忽視的實際背景。若是未經(jīng)刪選便塞給學(xué)生，不僅增加學(xué)生負(fù)擔(dān)更有可能誤導(dǎo)學(xué)生的學(xué)習(xí)。在我校，一般而言只會選取一份外來學(xué)習(xí)資料以供學(xué)生同步使用，其余資料試卷均來自于備課組按照高考導(dǎo)向，以新課標(biāo)為指向，結(jié)合學(xué)生階段實際而認(rèn)真選取編寫。高一高二年級的英語教學(xué)主要牢抓基礎(chǔ)知識，而高三階段由于我們不得不面對的高考，資料試卷的編寫尤其凸顯高考的指向作用，以訓(xùn)練學(xué)生的綜合解題能力為主要任務(wù)。到目前為止，我們選編的資料試卷主要包括：周練試卷，月考試卷，高考沖刺試卷，一輪復(fù)習(xí)資料，復(fù)習(xí)導(dǎo)學(xué)案，知識導(dǎo)圖等。

這里我們想以周練試卷，高考沖刺試卷及一輪復(fù)習(xí)資料的編選為例，呈現(xiàn)我們的操作程序并提出所遇困惑。

每周的練習(xí)試卷由組內(nèi)成員先根據(jù)該周教學(xué)內(nèi)容，結(jié)合該階段的學(xué)生實際獨(dú)立選編。然后在每周二的備課組集體活動中呈現(xiàn)給所有成員共同討論研究。首先編寫該周練試卷的老師必須詳細(xì)具體地說明該試卷的考核檢測范圍及目標(biāo)。然后一題題為組內(nèi)所有成員講解，并根據(jù)成員討論結(jié)果進(jìn)行修改或撤換。對于試卷中的所有細(xì)節(jié)，我們力求每題每句有所目的，結(jié)合教學(xué)實際隨時準(zhǔn)備修改。例如，在這一周的學(xué)習(xí)中，多數(shù)老師反映學(xué)生對上一周所學(xué)appeal to的掌握不扎實，我們會將閱讀中出現(xiàn)的attract one's interest及時更換成appeal to以求增加該短語在具體例句中出現(xiàn)的頻率，從而加深其映像。又如，對原題中出現(xiàn)的中文詞義提示，我們也會結(jié)合學(xué)生實際，考慮是否保留或增添。再如，閱讀表達(dá)題中出現(xiàn)了What is the best title of this passage?按照江西高考題型實際，我們會改成the main idea。

對于高考沖刺試卷，備課組會指派特定教師，在認(rèn)真聽取相關(guān)專家講座并與其進(jìn)行深入交流，認(rèn)真研究近年高考真題后，仔細(xì)選編。選編后的沖刺試卷再經(jīng)過備課組系統(tǒng)全面討論之后，集中匯總以便校內(nèi)骨干老師共同審核。

一輪復(fù)習(xí)資料抓的是基礎(chǔ)中的基礎(chǔ)，但又不同于第一次學(xué)習(xí)接觸時那般面面俱到。對于一輪復(fù)習(xí)資料的選編，我們遵循＂基礎(chǔ)，針對，思路＂的原則。根據(jù)高考試題中日益強(qiáng)調(diào)的語言日常性，對詞、短語、句知識的歸納，我們只選最最基礎(chǔ)實際的方面，著重強(qiáng)調(diào)其在具體語言背景中的解題思路。由于一輪復(fù)習(xí)資料的基礎(chǔ)性及全面性，其編寫工作往往由三個年級合作完成。

資料的編寫，我們努力緊隨高考，牢抓基礎(chǔ)，但依舊面臨多重障礙。首當(dāng)其沖的便是對高考解讀的不足，總是無法清晰把握高考導(dǎo)向。其次，在基礎(chǔ)年級的試卷中，我們該如何平

衡基礎(chǔ)知識與高考應(yīng)試技巧？再次，怎樣才能準(zhǔn)確把握學(xué)生實際，是否存在某種具體的甄別評價體系？

通過與其他學(xué)校的交流與合作，我們備課組建設(shè)得到了不斷優(yōu)化，同時種種問題困難也不斷涌現(xiàn)，我們懇切希望得到各位專家老師的幫助與指導(dǎo)。

謝謝。

第二篇：學(xué)術(shù)交流英語PPT講稿

30s

Good afternoon, everyone.The title of the paper is Visible Microspectroscopy for Diagnosis of Gastric Precancer.Its author is Liu Yong from Department of Physics, Zhao qing University.It’s presented by Li Mengfan from CAS, Hefei Institutes of Physical Science.You can know more about cancer and the new method to diagnose gastric precancer after reading this paper.58s

Cancer is very common among human beings.It is mostly related to the habit of the patients, the job, the environment, the drinking water and the soil matters, too.If a person is affected by certain bacteria, he may also get gastric cancer.Bad habits like smoking, drinking, mental tension, eating improperly and living irregularly increase the possibility of having cancer.Before specific treatment, the doctor should make sure whether the patient has cancer and where the focus is.The method used to diagnose cancer and locate the cancerous area is very important.42s

Before we design a method to diagnose cancer, we should know more about cancer like where it starts and what it causes.Firstly, about 90% of the human’s cancer start from the epithelial layer of skin, internal organs and tubular organs in the body.Secondly , cancer usually accompanied by the changes of organization structure in the cell level.So, the changes which appear in the structure of organization and chemical composition provides important evidence for diagnosis of precancer.42s

Normal method to diagnose gastric precancer is Reflectance spectroscopy.It’s very prospective in early diagnosis of cancer and is commonly used these years.One of the most common technology is diffuse reflectance visible spectroscopy, it can acquire the approximate information of the target tissue.This method is low cost, fast and non-invasive, it provides important means for diagnosis of malignant damage of organization of human organs.However, there are also some disadvantages of this method which need to be improved.55s

This is the system of diffuse reflectance spectroscopy, the light beam emitted from the tungsten halogen lamp is guided into the integral ball by the source fiber.The light come out of the integral ball irradiate the standard board, the reflected light of the standard board is treated as the background.Then take target tissue substitute for the standard board, and scan the reflected light of it.The reflected light spectra of the gastric tissue mucosal layer and the submucosa layer is guided into the spectrometer by the collector fiber.The spectrometer and the computer is connected by USB, spectrum can be processed using computer.36s

First of all, only average visible spectrum of the target tissue can be acquired, it means that the docters cannot make out the location of the cancerous tissue precisely.What’s more, the device is easy to be affected by changes of optical path length induced by different set-up of prober and the variation of hemoglobin concentration due to the pressure between prober and tissue.50s

To avoid the problems of the commonly used techniques, diffuse reflectance visible spectroscopy, scientists do a lot of researches to find out a new way to diagnose precancer.The new method is Visible Microspectroscopy.The visible microspectroscopic measurement device is accomplished on the basis of fiber confocal microscope, its 3-d imaging principle devote to the optical tomography ability of the system.The visible microspectrum of cancerous and normal tissue can be analysed and contrasted, so it’s more useful than the normal method.45s

This is the structure of the visible microspectroscopy device.The fiber coupler can separate the lighting beams from the signal beam.The two lens can focus the light on the tissue ，The 3-D electronic controlled platform move along the direction of optic axis, so that the device can acquire the visible microspectroscopy signal of the sample in different depth, precisely locate the boundary of the cancerous tissue.The signal measured from different position can be stored in the computer after analysed by the spectrometer.31s

This is the spectrum chart of the normal tissue and cancerous tissue, they are analyzed by the spectrometer before being transmitted to the computer.The upper chart is the visible spectrum of normal tissue, it is regular.Contrasting to this, in the nether chart, the spectrum of the cancerous area shows that the strength of reflected light grows as the wave length grows.49s

In comparison with the normal method, there are a lot of advantages of the new method.Firstly, the structure of visible microspectroscopy device is very simple.The main parts consist of source, fiber coupler, 3-D electronic controlled platform, spectrometer and the computer.Secondly, the 3-D space microspectrum can be acquired , which can help the doctors efficiently make out whether the gastric tissue is cancerous.What’s more, the optical tomography ability enabled the device to precisely locate the edge of the cancerous area.32s i.ii.iii.In conclusion, the main goal of this research is to find a new way to diagnose the gastric precancer.The spectrum of the normal and cancerous gastric tissues which can be measured by visible microspectroscopy in cell level is the central idea.This new method can obtain the cell level information, and is not affected by changes of optical path length and hemoglobin concentration.50s

i.The device is very simple, so it can have a small size, which can reduce the sufferings of patients.It can efficiently make out whether the tissue is canceration.ii.Besides, the 3-D space microspectrum and optical tomography ability can make the device accurately distinguish the cancerous tumor area from the normal tissue in cell level, thus the boundary of the cancerous tissue can be ascertained accurately.iii.The result of the research shows that this device may be used to non-invasively diagnosis of early gastric cancer.20s

This device is only researched in the lab, there are still a lot of works to do to make this device applied into practice.So, special design of this device should be made which can be applied to the medical diagnosis.

第三篇：學(xué)術(shù)交流英語-中科大 Transcript（精選）

Transcript Slide 1(Introduction):

Bionic Contact Lens GirishSukhwaniV.E.S Institute of TechnologyPresented by WesleyUniversity of Science &Technology of china Time: 15 seconds(0:00-0:15)Say: Ladies and gentlemen, good morning!I'm Wesley from theUniversity of Science and Technology of China.It is a great honour for me to address you on this special occasion.Today I will give a presentation with the title “Bionic Contact Lens”.Slide 2(Introduction):

Have you ever wished that you were a superman????A person with superior visionA person with super memoryA person with zoom capability Time: 30 seconds(0:15-0:45)Say: Before I start my presentation, let me ask you a question.Have you ever wished that you were a superman? A superman with superior vision is able to see things very far away and has super memory that means you can never forget.Besides, a person can zoom in front of the scene with zoom capability.In other words, you could see the world around in front of your eyes as seen by protagonist in science fiction movies like Terminator and Robocop.Slide 3(Introduction):

This is now possible using Bionic contact lens！Appearance description:One of the smallest deviceWe could simply ?BLINK? and than we will be onlineThe lens have infrared lights to create a virtual displayBionic Contact Lens Time: 40 seconds(0:45-1:25)Say: This is now possible using Bionic contact lens!We have established one of the smallest device.With this device, we would simply ?BLINK?

and we will be online.It?s already more science than fiction.Especially, bionic contact lenses are being developed to provide a virtual display that could have a variety of uses from assisting the visually impaired to the video game industry.What?s more, the lens will eventually have functional electronic circuits and infrared lights to create a virtual display.Slide 4(Introduction):

“The eye of the beholder”?The beginning of the Computer Human Interface?It would tell you what is relevant and what to ignore?Translation between languages at any timeComputer Human Interface Time: 35 seconds(1:25-2:00)Say: In next 20 years, internet will be on our contact lens as the picture shows.Bionic contact lens is this kind of device that could give a new meaning to the phrase “The eye of the beholder”.It could be the beginning of the Computer Human Interface of the future and your smart lens would tell you what is relevant and what to ignore.In addition, if someone speaks in Chinese, no problem, Bionic contact lens will translate Chinese into English subtitles underneath your picture.Slide 5(Body):

1.Generation principleConvert pieces of plastic and polymer to a functional systemAntenna picks up radio frequency energyChip harvests the energyTransmit information directly on the lensTransform it into voltage Time: 40 seconds(2:00-2:40)Say: First of all, let's see how it works!Firstly, bionic contact lens converts pieces of plastic and polymer to a functional system that resemble a kind of complexity in cellular form, and antenna picks up radio frequency energy that is transmitted by an antenna elsewhere.Then, while chip harvests the energy and transforms it into voltage that can power the LED.Finally, voltage works to display directly on the lens that would transmit information directly on the lens.Slide 6(Body):

2.Core Technology1)The micro fabrication technique2)Energy3)Virtual display technology4)Image technology Time: 25 seconds(2:40-3:05)Say: Any advanced device has its core technology, including bionic contact lens.Bionic contact lens contains many of the most advanced technologies, such as capillary forces, Antenna, Chip, Fresnel lenses and so on.Among them, the core technology can be summarized as the following four aspects.Slide 7(Body):

1)The micro fabrication technique?Build the circuits from layers of metal only a few nanometers thick?Construct light-emitting diodes one third of a millimeter across?Array of LED pixels is used in lens to form an active display Time: 50 seconds(3:05-3:55)Say: Next, let's look at the first aspect.Micro fabrication technique is used for image formation.We built the circuits from layers of metal only a few nanometers thick, about one thousandth the width of a human hair, and constructed light-emitting diodes one third of a millimeter across.Simultaneously, array of LED pixels is used in lens to form an active display.Therefore, the shape of each tiny component dictates which piece it can attach to, and a micro fabrication technique known as self-assembly.Slide 8(Body):

2)EnergyFirstly: Antenna picks up radio frequency wavesThen: Turn them into energy Finally: Chip harvests the energy and transforms it into voltage Time: 40 seconds(3:55-4:35)Say: For the second aspect, Since this device is very small, the supply of energy is a key technical problem.As shown in this flowchart.Firstly, antenna picks up radio frequency waves and then turn them into energy that is transmitted by an antenna elsewhere.Finally, while chip harvests the energy and transforms it into voltage that can power the LED.The voltage is also a very small laser that can be used to ensure that the image is in focus at all times and eliminate the need for micro lenses.Slide 9(Body):

3)Virtual display technology?Using a raster display?Displayed on the retina of the eyeVirtual Display Image Time: 45 seconds(4:35-5:20)Say: Then, the third aspect is virtual display technology.A virtual retinal display, also known as a retinal scan display or retinal projector, is a display technology that draws a raster display directly onto the retina of the eye.In bionic lens, the display is floating in front of the user using virtual display technology.Certainly, it is not possible to display an image over a solid angle from a point source unless the projection system can bypass the lenses within the eye.Slide 10(Body):

4)Image technologyImage qualityFresnel lensesImage managementPixel management Time: 60 seconds(5:20-6:20)Say: Finally, the core technology is to say that Image technology.It is mainly related to these four points on the slide.In terms of Image quality , we overcome that obstacle by precisely adjusting the angle of incoming light emitted by diodes on the contact lens.For Fresnel lenses and Image management, we tackled the limitation of the minimum focal distance of the human eye by incorporating a set of Fresnel lenses into the device.For Pixel management, we have provided the first proof-of-concept technology demonstrations for producing multipixel and in-focus images.Slide 11(Body):

3.Critical Applications?Zooming in on and out of distant objectsPersonalized wide-screen TVVisual aids for vision-impaired people?????Bio-sensing--monitor health care Immersive video gamesDirection-to orient and identify landmark on the map Time: 45 seconds(6:20-7:05)Say: In the previous section, we have just talked about the generation of bionic contact lens and its core technology, then we talk about what are the critical applications.As shown on the slide, it consists mainly of six points.For example, zooming in on and out of distant objects-It means we would be able to zoom in on something far away or to look at something very close;And personalized wide-screen TV-It means the combination of contact lens with embedded optoelectronic and electronic devices could well be the beginning of the Computer Human Interface of the future.As time is limited, the following four points I will not explain in detail.Slide 12(Body):

4.Technical Bottlenecks?Attach the electronic components thinner than a human hair???Are materials safe for use in the body?Focus on image qualityGive power supply Time: 40 seconds(7:05-7:45)Say: Although the application of good prospects for bionic contact lens, there are still several technical bottlenecks.First challenge is how to attach the electronic components thinner than a human hair.The next problem is building the lenses is a challenge because materials that are safe for use in the body are delicate.What?s more, how to focus on image quality and how to give power supply are both the big obstacle.In addition to these points, there are other problems we need to work hard to resolve.Slide 13(Conclusion):

Conclusion?The era of bionic contact lens is coming soon--With advanced core technology--Very good application prospects?Technical bottlenecks to be solved Time: 25 seconds(7:45-8:10)Say: As I end，the era of bionic contact lens would soon come.According to the introduction of the previous point of view, bionic contact lens with advanced core technology has a very good application prospects.However, there are still some bottlenecks to be resolved because of the technical problems so far.Slide 14(Conclusion):

Conclusion : Why is this significant??The beginning of the Computer Human Interface of the future--Surfing the Web at any time--Keeping the information connection all the time??A person can record their entire lifeOne day lead to everyone having beyond perfect vision Time: 35 seconds(8:10-8:45)Say: In short, bionic contact lens has a cross-era significance.One of the most important is bionic contact lens could be the beginning of the Computer Human Interface of the future when we could surf the Web at any time or keep the information connection all the time.Furthermore, a person could record their entire life just by blinking or possibly connect their contact lenses with a wireless device, and we would witness the day when everyone has the perfect vision.Slide 15(Conclusion):

Future Work?Develop the micro-manufacturing technologyEliminate security issues??Combine medical and other related professional in each technology Time: 15 seconds(8:45-9:00)Say: At the end of the report, I want to give a brief account of our future work.As shown here, we are based on the three main directions for further improvement of the bionic contact lens.Thank you.Are there any questions?

第四篇：學(xué)術(shù)交流英語final Presentation

A Transcript for a Conference Paper Presentation Slide 1(Title):

Time: 35 seconds(0:00-0:35)Say: Good morning!My major is electric engineering.My research field is signal and information processing.The topic I concern is about speech enhancement.Today I will give a presentation with the title “A Two-stage Beamforming Approach for Noise Reduction and Dereverberation”.This work is done by Habets and Benesty from University of Quebec, Montreal, Canada.Slide 2(Introduction)

Time: 55 seconds(0:35-1:30)Say: First, I will give a brief introduction of microphone arrays and make you have a preliminary understanding of the research problem.Simply, when you place several microphones according to certain geometric shapes, you get a microphone array.Here is a liner array and a circle array is also general.Let’s take this picture as an example.There is a noise source at the location of the star.When the girl speaks, her sound will get captured by all microphones.In the same time, received signals are polluted by the undesired noise and we can’t have the clean speech.Slide 3(Introduction)

Time: 55 seconds(1:30-2:25)Say:

So, we need do something to solve this problem.In this slide, the background and significance of speech denosing and dereverberation are introduced.In many applications, such as speech recognition and teleconferencing, we need distant or hand-free audio acquisition.However, in many cases, we just receive a noise corrupted or reverberant version of desired speech signals.To achieve high-quality human-to-human or human-to-machine speech communication, we need to develop efficient noise reduction and dereverberation algorithms.Microphone arrays can be very useful in these situation.Slide 4(Body)

Time: 50 seconds(2:25-3:05)Say:

First, we can use beamforming for the microphone arrays during the processing of received signals.What is the beamforming? Here are its definition and working principle.Beamforming is a signal processing technique that applies microphone arrays for directional signal transmission or reception.By operating on received multichannel signals, beamforming allows us to recover signals from a particular direction and suppress noise signals from undesired directions.This technique is so called “beamforming”.Slide 5(Body)

Time: 45 seconds(3:05-3:55)Say: In this paper, we use beamforming to achieve noise reduction and dereverberation.Noise reduction is important since noise is everywhere around us.Some common noise includes machine noise, vehicle noise, music noise, babble noise, and so on.On the other hand, the reverberation is created when a sound is produced in an enclosed space causing a large number of echoes to build up and then slowly decay as the sound is absorbed by the walls and air.Slide 6(Body)

Time: 60 seconds(3:55-4:55)Say: To achieve both noise reduction and dereverberation, the two-stage approach is proposed in this paper and before the noise reduction stage, a dereverberation stage is needed.Here is the principle diagram.These y represent the reserved signals by the microphone array and we have N microphone.These Q and H represent weighting coefficients of two different beamforming stages.The Z represents the final signal after noise reduction and dereverberation.In the next few slides, the details about how the algorithm work are given.Slide 7(Body)

Time: 45 seconds(4:55-5:45)Say: The first stage is dereverberation stage.In this slide, the computational process of dereverberation stage is presented.All channel inputs are weighted.The weighted channel inputs are sent to the next stage for noise reduction.So the key is to find proper weights so that the reverberation components are minimized.This is implemented by complex mathematics computation.The final weights are independent on signals.Slide 8(Body)

Time: 45 seconds(5:45-6:25)Say: On the basis, further analysis of the dereverberation stage is needed.The first stage comprises a signal-independent beamformer that generates a reference signal that contains a dereverberated version of the desired speech and residual interference.In general, the desired speech component at the output of the beamformer contains less reverberation compared to reverberant speech signal received at the microphones.Slide 9(Body)

Time: 40 seconds(6:25-6:55)Say: The second stage is noise reduction stage.In this slide, the computational process of noise reduction stage is presented.The weighted inputs obtained in the first stage are again weighted and summed.The weights are computed so that the signal-to-noise ratio(usually called SNR)is maximized.Since SNR is independent on desired signals, the weights are independent on signals as well.Slide 10(Body)

Time: 45 seconds(6:55-7:25)Say: Further analysis is also applied to the noise reduction stage is dereverberation stage.The second stage uses the filtered microphone signals and the noisy reference signal to estimate the desired speech component at the output of the DS beamformer.A major advantage over classical approaches is that the proposed approach is able to dereverberate the received desired signal with very low speech distortion.This is the whole process of the proposed algorithm.Slide 11(Body)

Time: 20 seconds(7:25-7:45)Say: Let’s see the performance.Here are two graphs which represent the received speech signal by one microphone and the processed speech signal by the proposed two-stage approach.In the first graph, the fuzzy parts denote noise and reverberation.They has been weakened in the second graph.In this way, better performance is achieved.Slide 12(Conclusion)

Time: 20 seconds(7:45-8:05)Say:

In conclusion, our goal is to find a method which can achieve both dereverberation and noise reduction while causing low speech distortion as much as possible.After the introduction of the whole process of the proposed algorithm, let’s summarize what we have got.Slide 13(Conclusion)

Time: 10 seconds(8:05-8:25)Say First, a two-stage beanforming approach is designed.The first stage is a signal-independent beamformer that generates a reference signal which contains dereverberated version residual interference and the second stage is multichannel noise reduction to estimate the desired speech component at the output of the first stage.Finally, better performance is observed.Slide 14(Conclusion)

Time: 25 seconds(8:25-8:50)Say: Why is this significant? On the one hand, we need more recognizable and clearer speech instead of a noisy world.On the other hands, this work is significant in the future application of speech technologies.For example, you can make a telephone call without the mobile phone in hand.You can control your smart devices by voice even when you are few meters away.Slide 15(Conclusion)

Time: 15 seconds(8:50-9:00)Say In the future, we will implement proposed algorithm and design better speech enchantment algorithms.Thank you, are there any questions?

第五篇：英語組學(xué)術(shù)交流實施方案

新目標(biāo)英語教學(xué)改革學(xué)術(shù)交流

實施方案

一，活動目的響應(yīng)新目標(biāo)英語教育教學(xué)改革號召，從根本上轉(zhuǎn)變教師傳統(tǒng)陳舊的教育觀念，提高我校英語教師教育教學(xué)水平，使教師的教與學(xué)生的學(xué)更好結(jié)合，從而提高課堂效率，適應(yīng)現(xiàn)代化教學(xué)改革的需要。二，活動主題-----新目標(biāo)英語教學(xué)改革之思考 三，活動時間地點

時間：9月15日下午

地點：校長辦公室

四,參加人

饒淑元周玲陳超云 范建群

五，活動要求

1，每人提交學(xué)術(shù)論文一篇

2，現(xiàn)場交流

3，通過互評，現(xiàn)場評出前兩名，由學(xué)校發(fā)獎。

松陽中學(xué)英語教研組

2013年9月3日