学术交流英语final Presentation★

第一篇：学术交流英语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?

第二篇：学术交流英语PPT讲稿

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：学术交流英语-中科大 Transcript（精选）

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：英语组学术交流实施方案

新目标英语教学改革学术交流

实施方案

一，活动目的响应新目标英语教育教学改革号召，从根本上转变教师传统陈旧的教育观念，提高我校英语教师教育教学水平，使教师的教与学生的学更好结合，从而提高课堂效率，适应现代化教学改革的需要。二，活动主题-----新目标英语教学改革之思考 三，活动时间地点

时间：9月15日下午

地点：校长办公室

四,参加人

饶淑元周玲陈超云 范建群

五，活动要求

1，每人提交学术论文一篇

2，现场交流

3，通过互评，现场评出前两名，由学校发奖。

松阳中学英语教研组

2013年9月3日

第五篇：学术交流

北京师范大学鄂尔多斯第二附属学校特别重视教师培训与学术交流。为提高教师理论水平和综合素养，不断提升课堂教学水平，我校于2013年3月开始，派遣教师积极参加北师大平台活动，旨在学习兄弟学校先进课堂教学模式、管理（包括课堂管理和学校管理）模式。

3月初，新教师陆续来到园区，参与学校建设，进行岗前培训。部分教师分别安排到北师大鄂尔多斯第一附属学校、北师大乌海附属学校、北师大包头附属学校听课学习。全体新教师于6月17日参加北师大组织的新入职教师培训班，7月初，第二附属英语老师将参加由北师大办学部和国际非盈利专业教育机构--美中教育机构（ESEC）联合开展的T.I.P全封闭英语口语培训项目，此次培训为期21天，致力于提高全国中小学英语教师口语水平及教学能力。ESEC将无偿提供我校教师每期3000元的奖学金资助（可抵培训费）。新教师岗前培训，充分发挥了北师大办学平台的资源优势，提高了教师业务水平，促进北师大合作附校教师素质的全面提升，加强教师个性化发展。

7月17日，鄂尔多斯空港园区管委会石占军主任，北京师范大学鄂尔多斯第二附属学校李玉海校长以及我校三位教师将受邀参加2013年北京师范大学基础教育合作办学附属学校工作会议暨‚论道休宁‛校长高端研修班。其目的在于提升高等师范院校基础教育合作办学水平，加强高师合作办学交流，全面提高北师大合作学校管理干

部的整体素养，培养创新型教育教学管理人才，助力校长专业提升。参会培训费用，则全部由北师大基础教育对外合作办学部承担。

2013年5月10日我校成功申报‚教育部中国教师发展基金会 国家教师科研专项基金‘十二五’规划全国重点课题——《中国特色学校创建与发展战略研究》‛并获颁发‚全国特色学校创建示范基地‛。学校受邀参加7月22日至26日在西宁召开的国家‚义务教育学校校长专业标准‛重点内涵解读暨全国特色学校创建与名校长办学成功经验报告会。因我校已获‚示范基地‛资格，故免6人学费。届时，我国教育届权威领导、专家、名校长们将聚集西宁，共同分享成功教育经验和教育思想，探讨如何创建特色学校、进一步促进‚教育家型‛校长思想的形成与传播，促进教育事业发展，搭建各省学校交流与合作平台。

我校教师积极参与交流活动。在外顶岗教学教师实习培训已满一年，工作期间表现出色，多人代表学校参加对外活动。部分表现优异的教师将于7月16日至28日参加在广州深圳举行的‚2013年全国中小学百名优秀教师高级研修班‛，研修班特邀专家、名师团队亲临指导，研修主题为更新教育观念，创新教学模式，转变教与学方式，促进教师专业发展。

我校在北师大青岛附校顶岗教学的刘伟杰、薛娇在为期一年的顶岗教学中，表现优异，所带学科均取得良好成绩，受到北师大青岛附校嘉奖，将由青岛附校出资赴韩国交流学习。

7月17日至23日我校在北师大鄂尔多斯附属学校顶岗教学教师

李超、张利平将参加由鄂尔多斯附属学校组织的‚夏季青岛拓展夏令营‛，全程参与夏令营寓教于乐的拓展活动。

8月21日至27日，我校教师李林生受邀参加在台湾举行的海峡两岸和日本共同筹办的‚2013东亚科技创新教育研修会‛，会议期间，台湾中国文化大学无偿提供场地、茶水点心等，不收会务费。研修会目的在于加强两岸科技教育学术交流，分享最前端科技教育成果，推动教师个人教学水平的提高，促进不同地区科学教育合作与交流。

为了更好地服务学校师资建设，我校交流活动主题不断创新，交流内容不断创新，交流形式不断创新。学术讨论和学术争鸣促使新思想、新观点、新方法源源不断产生。学校始终坚持思想办学、文化办学、课程办学、灵魂办学，多使教师开阔眼界，眼界决定境界，以学生为核心，将学生、学校发展作为落脚点，推动学校各方面不断完善，要求每位教师在对外交流的同时，取其精华，心系学校，最终将先进观念和方法应用到日常教务教学和学校管理中。