Xi ‘an Satellite TT&C Center is the earliest, largest and most functional spacecraft TT&C and management center in China, and has successfully completed hundreds of TT&C tasks for space launch. Photo by Zhang Chengwei

　　Zhongxin. com, Xi ‘an, April 25th: The satellite "housekeeper" casts a "monument" — — Visit China Xi ‘an Satellite TT&C Center

　　Author Zhang Chengwei Zhang Su

　　The ancient city of Xi ‘an is an international city where human history and modern science and technology complement each other. Xi ‘an Satellite TT&C Center, located here, is the earliest, largest and most functional spacecraft TT&C and management center in China, and has successfully completed hundreds of TT&C tasks for space launch.

　　The reporter learned that on June 23rd, 1967, China established the Satellite Ground Survey Department, which was the predecessor of Xi ‘an Satellite TT&C Center. In September 1975, the center was formally established.

　　The relevant person in charge said that the temporary command and control center that initially performed a single measurement and control task has developed into a modern space measurement and control center that integrates real-time measurement and control of spacecraft and long-term management of spacecraft in orbit. There is the only land-based space TT&C network in China, with TT&C sites spread all over five continents and 13 provinces and regions in China.

　　The first monument

　　China has no ready-made experience to learn from in building sophisticated satellite ground observation systems. The technicians of the satellite ground survey department started from scratch, worked hard, built the computer room, installed the antenna and laid the cable by themselves, debugged the equipment in the heat and cold, and wrote the program under the oil lamp in the humble room, which passed the difficult years in the history of measurement and control.

　　Under the auspices of Academician Chen Fangyun, the scientific and technical personnel gathered their wisdom to tackle key problems and worked out the measurement technical scheme of China’s first artificial satellite.

　　On April 24th, 1970, the "Dongfanghong-1" satellite flew to Tianyu, and China became the fifth country in the world to launch a domestic satellite with a homemade rocket after the Soviet Union, the United States, France and Japan. The launch measurement and control of the "Dongfanghong-1" satellite was a complete success. The center accurately predicted the time and position of the satellite flying over 244 cities in the world, and set up Chinese’s first "milestone" in the vast sky.

　　People follow the stars.

　　In the years after the successful launch of Dongfanghong-1 satellite, the United States and the Soviet Union launched several recoverable satellites. At that time, China had "two bombs and one satellite", its national strength gradually increased, and China astronauts were full of confidence.

　　On November 26th, 1975, China successfully launched its first recoverable satellite. The central activity monitoring and recovery unit "people move with the stars", using radio direction finder and other equipment to capture satellites returning at high speed independently, creating a successful achievement in satellite recovery.

　　Synchronous fixed point

　　In 1970s, the space powers accelerated the pace of space race. China executives pointed out: "China is a developing country. It will not participate in the space race in terms of space technology, and it should concentrate on urgently using practical satellites." China’s first applied satellite "Dongfanghong II" communication satellite came into being.

　　On April 8, 1984, China successfully launched the first communication satellite "Dongfanghong II". The center and the monitoring stations fought continuously, carefully monitored and controlled for 8 days and nights, and successfully positioned the satellite over the equator at 125 degrees east longitude and 36,000 kilometers. China became the fifth country in the world to launch a geostationary orbit satellite.

　　Spacecraft recovery

　　On September 21, 1992, China’s manned spaceflight project was launched. The center undertakes two major system tasks: measurement and control communication and landing site.

　　The landing site system is mainly responsible for the search and recovery of spacecraft return capsule and the search and rescue of astronauts. It is a complex system engineering with air-ground integration and multi-disciplinary cooperation. As the leading unit of the landing site system, the Center organized and coordinated more than 10 departments and units, including Aerospace Science and Technology Corporation, and set up an all-weather manned space search and rescue force with high mobility, forming a set of scientific program flow of recovery and measurement of the return capsule, high-precision impact prediction and astronaut search and rescue, and establishing a fast and safe search and rescue mode of "searching and rescue astronauts in the air and disposing the return capsule on the ground".

　　During the TT&C recovery mission of the Shenzhou-1 to Shenzhou-10 spacecraft, the center organized a search for rescue forces and repeated drills, creating a world space miracle that "rescuers arrived at the astronaut landing site in 30 seconds", the difference between the predicted landing point and the actual landing point was only 280 meters, and the orbital accuracy reached meters.

　　Multi-star management

　　In 1990s, in order to meet the needs of multi-satellite launching and parallel management, the Center put forward the optimal allocation strategy and algorithm of TT&C resources, and initially realized the separation of TT&C network management and spacecraft management. Since the beginning of this century, the number of spacecraft in orbit has increased, and the center has independently developed several sets of precision orbit control software, such as multi-satellite co-location control, constellation configuration control and multi-satellite formation flight. The accuracy of orbit calculation and control has always been at the leading domestic and international advanced levels.

　　In recent years, the center has vigorously promoted the automation construction of measurement and control system, and the space measurement and control network has gradually realized the automatic operation of "manned and unattended", which has a high level of visualization, informationization, automation and intelligence.

　　At present, there are more than 100 spacecraft in orbit managed by the center, and it has the ability to carry out orbit determination, state monitoring, attitude adjustment, orbit control and maintenance for 200 spacecraft in orbit at the same time. These in-orbit spacecraft have played an important role in information security in major events such as the Beijing Olympic Games and earthquake relief.

　　Deep space exploration

　　Driven by major aerospace projects such as lunar exploration, the center has overcome a series of key technologies such as long-distance tracking and measurement, and its measurement and control capability has achieved a major leap from earth orbit to lunar and deep space orbit spacecraft tracking and control.

　　During Chang ‘e-1’ s flight around the moon, the center made the communication distance of TT&C as far as 400,000 kilometers for the first time, knocking on the door of TT&C in deep space. In the "Chang ‘e II" mission, the center completed the whole tracking and measurement and control task from flying to circling the moon until the end of its life, and extended the distance record of measurement and control communication to 80 million kilometers.

　　In 2013, the center organized a tracking measurement test on the ESA Venus Express, and the measurement and control communication distance successfully exceeded 250 million kilometers. In the "Chang ‘e III" mission, the center adopted a series of advanced deep space measurement methods to ensure the accurate landing of the probe on the moon, and successfully carried out major space technology experiments such as lunar surface exploration, laying the foundation for the subsequent exploration of extremely distant stars such as Mars.

　　Looking back, the years are like songs; Looking to the future, the mission urges the levy. A new generation of space TT&C personnel will keep up with the forefront of world space science and technology development, blaze new trails and forge ahead hand in hand. (End)

1905 movie network news Directed by Huatao Teng and adapted from a novel of the same name in Jiangnan, a sci-fi war movie starring Lu Han and Shu Qi, Shi Liang, Godfrey Tsao, Kid Young, Wilson and Jialing Sun will be released on August 9th. Recently, in the advance premiere of the film, the strong sense of substitution against alien civilization in Shanghai has ignited the audience, and the shocking scenes such as "Shanghai Cannon" and "Shanghai Land Sinking" have also become the focus of the film, attracting countless eyes. Some viewers expressed their feelings: "Seeing a familiar city become a sci-fi battlefield, I don’t know how many China sci-fi fans are looking forward to it. Now this vision has finally come true."

Today, the film exposed the special edition of "How to Enter the Castle", revealing the story origin of this future war. In the future world, when people are in Ad Astra, they will bring the super energy substance "Xianteng" back to the earth as the main energy source. Subsequently, the alien mother ship came to the earth with predators, which started a predatory war against "Xianteng", and human beings also used "Xianteng" to build a "bubble defense system" to resist invasion. After other cities were hit hard one after another, Shanghai, China became the last city fortress and the last hope of human civilization.

　

Six-year long March, making a China science fiction movie.

Director Huatao Teng: Three years to polish the conceptual design.

Shanghai Fortress, a novel written by Jiangnan, has accumulated countless readers’ youthful memories in ten years. When domestic sci-fi movies have not entered the audience’s field of vision, it is doomed to be a huge project and full of unknown difficulties to choose to put this story of future war and delicate emotions on the movie screen from the beginning of the project. It takes six years to make a sci-fi movie. In the view of director Huatao Teng, the setting of world outlook and the conceptual design of prop scenes are the most important links.

Why do alien motherships look like this, what is their attack mode, and what is our defense mode … … With these problems, Teng Dao kept meeting with the team in the preparatory stage and polished and revised it repeatedly. Because there is no domestic film experience to learn from, Teng Dao said frankly: "It took more than three years to get a basic introduction to the concept lesson." By the time of official shooting, each actor not only knew the world described by the director, but also got a manual, which recorded the description of each scene and the usage of each prop.

　

The "Shanghai battlefield" big scene was praised.

Audience: "The first feeling is shock."

"Shocking", "being there" and "burning" … … At the advanced premiere of the film "Shanghai Fortress", these carefully crafted sci-fi scenes were also well received and recognized by the audience. The huge alien carrier landed on the earth, and the Shanghai cannon jumped out of the Huangpu River and fired, exchanging the whole city of Shanghai "Lu Chen" for hope. All kinds of big scenes that happened in China for the first time were eye-catching. Some viewers concluded that the first feeling after watching the movie was shock.

For this new exploration of China’s sci-fi, some viewers commented: "The sci-fi war film with Shanghai, China as the main battlefield has restored the big scenes in the original, the special effects are very realistic, and the film production showing Shanghai Lu Shen is even more excellent." Some viewers also said: "The degree of completion is quite good. From the visual effect, the dome-like bubble defense and every fierce battle between human beings and alien civilizations are highlights."

　

The film "Shanghai Fortress" will be released on August 9th.

Domestic colleges and universities expose plagiarism again.

Recently, The Paper (www.thepaper.cn) received a report that a master’s degree thesis of Northeastern University was similar to a master’s degree thesis of Shanghai Jiaotong University in a large area.

These two papers are respectively the master’s thesis of Sun Yong, a graduate of Northeastern University majoring in mechanical engineering in 2008, "Optimal Design and Simulation Analysis of the Pneumatic System of Vacuum Cleaner" (hereinafter referred to as "Sun Yong’s thesis") and the master’s thesis of Li Bihong, a graduate of Shanghai Jiaotong University majoring in vehicle engineering in 2006, "Structural Design and Optimization of the Pneumatic System of Vacuum Cleaner" (hereinafter referred to as "Li Bihong’s thesis").

Cover of Li Bihong’s paper

Li Bihong’s thesis was completed in February 2006, and Sun Yong’s thesis was completed in January 2008. In terms of time, Sun Yong’s thesis was completed nearly two years later than Li Bihong’s.

The Paper reporter downloaded the above two papers from Wanfang Data Knowledge Service Platform. After comparison, it is found that the main contents of the two papers are highly similar, and several paragraphs are almost verbatim, and nearly 80% of the references are completely consistent.

On the afternoon of April 2, The Paper contacted the Academic Committee of Northeastern University and the Scientific Research Office of the School of Mechanical Engineering and Automation of Northeastern University. The staff of both institutions said that they were not aware of the matter and could not give a specific reply for the time being.

Later, The Paper contacted Yang Ying, the instructor of Sun Yong’s thesis and a professor at the School of Mechanical Engineering and Automation of Northeastern University. "Just follow the normal (reporting) channels." Yang Ying said to The Paper.

The content of the text is highly similar

After comparing the two papers, The Paper found that the research objects of the two papers are the gas path system of the vacuum cleaner.

The structure of Li Bihong’s paper is divided into five chapters, namely "Introduction", "Brief introduction of the air path system of the vacuum cleaner", "Structural design and optimization of the suction port of the vacuum cleaner", "Structural design and improvement of the gravity settling chamber of the vacuum cleaner" and "Summary and discussion".

Compared with the structure of Li Bihong’s paper, Sun Yong’s paper has two more chapters, which are divided into seven chapters, namely, introduction, brief introduction of vacuum cleaner and its working principle, analysis of working medium characteristics of gas pump, dust particle movement mechanism and design of suction port, simulation analysis and structure optimization of suction port, simulation analysis and optimization design of gravity settling chamber and summary and discussion.

Although the structural design of the two papers is different, part of the text is highly similar.

The third section of the first chapter of Li Bihong’s thesis.

The second section of the chapter "Introduction" of Sun Yong’s thesis.

Taking the first chapter "Introduction" as an example, Li Bihong’s paper wrote in the first paragraph of the third section of this chapter "Research Status and Application of Vacuum Cleaning Vehicles at Home and Abroad": "In developed countries abroad, the research on vacuum cleaning vehicle technology is gradually developed and perfected with the improvement of road sweeper performance. According to the relevant information, the technical research of vacuum cleaner abroad mainly focuses on these three aspects: 1. Providing the operating performance of products. New technologies such as control and information are applied to the vacuum cleaner, and an intelligent vacuum cleaner is developed. For example, the vacuum cleaner in Elgen, USA, adopts electromechanical integration design, applies microcomputer and automatic control technology, and has 57 functional designs; The vacuum cleaner uses more than a dozen sensors with superior performance, and transmits all kinds of information with different working conditions, different media, different parts, different environments and different functions to the control center (single chip microcomputer). After receiving the relevant information, the control center comprehensively processes the information, and then sends control instructions to the actuator to control the movement of relevant parts of the vacuum cleaner. 2. Improve the working efficiency of the gas path system. Optimize the product structure and improve the operation effect. For example, there is an’ S’ type dust particle separator in the large-volume garbage bin of EIGLN dust collector in the United States, which can separate dust particles more effectively and increase the dust removal efficiency. 3. Innovative product development methods. Combining virtual design and manufacturing technology with computational fluid dynamics analysis technology, it is applied to the design and production process of vacuum cleaner, forming digital design and production mode, speeding up product renewal cycle and improving product efficiency. "

The second section of the "Introduction" chapter of Sun Yong’s paper is "Research Status and Application of Vacuum Cleaners Abroad". In the first paragraph, the specific expression is: "The application of vacuum vacuum cleaner was earlier in foreign countries, and the research on vacuum cleaner technology was gradually developed and perfected with the continuous improvement of the performance requirements of public sweepers. According to relevant information, the research on vacuum cleaner technology abroad is mainly focused on the following aspects: 1. Providing product operability technology: applying new technologies such as control and information to vacuum cleaner, and developing intelligent vacuum cleaner. For example, the vacuum cleaner in Elgen, USA, adopts electromechanical integration design, applies microcomputer and automatic control technology, and has 57 functional designs; The vacuum cleaner uses more than a dozen sensors with superior performance, and transmits all kinds of information with different working conditions, different media, different parts, different environments and different functions to the control center (single chip microcomputer). After receiving the relevant information, the control center comprehensively processes the information, and then sends control instructions to the actuator to control the movement of relevant parts of the vacuum cleaner. 2. Improve the working efficiency of the gas path system: By optimizing the structural components of the gas path system and adopting different dust removal and filtering materials, the volume of the vacuum cleaner can be reduced and the working effect can be improved as much as possible. For example, there is an’ S’ type dust particle separator in the large-volume garbage bin of EIGLN in the United States, which can separate dust particles more effectively and increase the dust removal efficiency. 3. Innovative product development methods: combining virtual design and manufacturing technology with computational fluid soft mechanics analysis technology,When it is applied to the design and production process of vacuum cleaner, it forms a digital design and production mode, speeds up the product update cycle and reduces the product development cost. "

In the above two paragraphs, Sun Yong’s paper is almost identical with Li Bihong’s paper except for modifying individual wording, changing "fluid mechanics" into "fluid soft mechanics" and the difference of three punctuation marks.

Screenshot of the second chapter of Li Bihong’s thesis on "the overall structure of vacuum cleaner".

Screenshot of the second chapter of Sun Yong’s paper on "the overall structure of vacuum cleaner".

For another example, the first section of Chapter 2 of Li Bihong’s thesis "The overall structure of vacuum cleaner" reads: "The vacuum cleaner is modified by adding a special device on the second-class chassis of the truck. The special device mainly includes two parts: gas path system and hydraulic control system. The gas path system is the core part of the vacuum cleaner, and its working condition determines the overall performance of the vacuum cleaner. The gas path system includes two subsystems: dust collection and dust removal, which are mainly composed of high-pressure centrifugal fan, gravity settling chamber, dust suction port, secondary dust collector, ventilation pipeline and other components. There are two main forms of power supply for the gas path system: single engine type and double engine type. " Li Bihong’s paper also presents the principle of single engine and double engine in the form of legend.

Sun Yong wrote in the second section of the second chapter "Overall structure of vacuum cleaner": "Generally, vacuum cleaner consists of a general vehicle chassis and a van-type working device. The chassis is usually the second-class chassis of freight cars, and the working device mainly includes two parts: the gas path system and the hydraulic control system. The gas path system is the core part of the vacuum cleaner, and its working condition determines the overall performance of the vacuum cleaner. The gas path system includes two parts: dust suction and dust removal, and is mainly composed of high-pressure centrifugal fan, gravity settling chamber, dust suction port, subsequent dust collector, ventilation pipeline and other components. The gas path system can be divided into single engine type and double engine type according to the different power supply forms. " Sun Yong’s paper also presents the principle of single engine and double engine by drawing.

There is no difference between the above two paragraphs except that the first sentence and the last sentence are simply rewritten, and the "secondary dust collector" is changed to "subsequent dust collector", and other contents, including diagrams, are all the same.

Part of the contents of the fourth and fifth chapters of Sun Yong’s thesis are similar to some of the contents of the third chapter of Li Bihong’s thesis.

Screenshot of the content of the third chapter of Li Bihong’s paper "The take-off process of dust particles".

Screenshot of the fourth chapter of Sun Yong’s paper "The take-off process of dust particles".

For example, in the third chapter of Li Bihong’s paper, he wrote: "Under the action of wind, when the average wind speed is about equal to a certain critical value, individual prominent dust particles start to vibrate or swing back and forth under the influence of turbulent velocity and pressure pulsation, but they do not leave their original positions; When the wind speed increases beyond the critical value, the vibration will also be strengthened, and the head-on resistance and rising force will increase correspondingly enough to overcome the action of gravity. The larger rotating torque urges some of the most unstable dust particles to roll or slide along the bed surface first. Due to the diversity of geometric shapes and spatial positions of dust particles and the variability of stress conditions, during the rolling process, some dust particles will gain great momentum when they meet with raised dust particles on the surface or are impacted by other moving dust particles. Dust particles with great impulse will quickly change their movement mode, from horizontal movement to vertical movement, and suddenly jump up into the airflow to start moving. "

The fourth chapter of Sun Yong’s thesis also has a section on "the take-off process of dust particles". The specific content is as follows: "Under the action of wind, when the average wind speed is about equal to a certain critical value, individual prominent dust particles start to vibrate or swing back and forth under the influence of turbulent velocity and pressure pulsation, but they do not leave their original positions;" When the wind speed increases beyond the critical value, the vibration will also be strengthened, and the head-on resistance and rising force will increase correspondingly enough to overcome the action of gravity. The larger rotating torque urges some of the most unstable dust particles to roll or slide along the bed surface first. Due to the diversity of geometric shapes and spatial positions of dust particles and the variability of stress conditions, during the rolling process, some dust particles will gain great momentum when they meet with raised dust particles on the surface or are impacted by other moving dust particles. Dust particles with great impulse will quickly change their movement mode, from horizontal movement to vertical movement, and suddenly jump up into the airflow to start moving. "

The above two paragraphs are exactly the same.

Screenshot of the content of the first section of chapter 3 of Li Bihong’s paper, "Performance simulation analysis of dust suction port".

Screenshot of the fifth chapter of Sun Yong’s paper "Performance Simulation Analysis and Structure Optimization of the Dust Suction Port".

For another example, the third chapter of Li Bihong’s thesis mainly discusses "the performance simulation analysis of the dust suction port". This section begins with an overview of computational fluid dynamics, which mainly involves the application field of computational fluid dynamics, the simulation process of computational fluid dynamics, CFD software structure and so on. Among them, the first paragraph reads: "Computational Fluid Dynamics (CFD) is the product of the combination of modern fluid mechanics, numerical mathematics and computer science. It analyzes the system including fluid flow and heat conduction through computer numerical calculation and image display. The basic idea of CFD can be summed up as follows: replace the original continuous physical fields in time domain and space domain, such as velocity field and pressure field, with a series of sets of variable values at a limited number of discrete points, establish algebraic equations about the relationship between field variables at these discrete points through certain principles and methods, and then solve the algebraic equations to obtain the approximate values of field variables. "

The title of Chapter 5 of Sun Yong’s paper is "Performance Simulation Analysis and Structure Optimization of Dust Suction Nozzle", which also begins with "Overview of Computational Fluid Dynamics", including "Application Field of Computational Fluid Dynamics", "Simulation Process of Computational Fluid Dynamics" and "CFD Software Structure". The first paragraph reads: "Computational Fluid Dynamics (CFD) is the product of the combination of modern fluid mechanics, numerical mathematics and computer science. It analyzes the system including fluid flow and heat conduction through computer numerical calculation and image display. The basic idea of CFD can be summed up as follows: replace the original continuous physical fields in time domain and space domain, such as velocity field and pressure field, with a series of sets of variable values at a limited number of discrete points, establish algebraic equations about the relationship between field variables at these discrete points through certain principles and methods, and then solve the algebraic equations to obtain the approximate values of field variables. "

The two paragraphs listed above are verbatim.

Taking the fourth chapter of Li Bihong’s thesis and the sixth chapter of Sun Yong’s thesis as an example, it is found that the two chapters are similar in a large area.

For example, when discussing the spatial structure of the gravity settling chamber, Li Bihong wrote: "The gravity settling chamber of the vacuum cleaner is installed on the vehicle chassis, so the size of the vehicle chassis is a factor that affects the structural design of the settling chamber. The length, width and height dimensions of the gravity settling chamber shall not exceed the dimensions defined by the vehicle chassis. The size of gravity settling chamber should be arranged according to the principle of short, wide and long. If the settling chamber is too high, the dust particles on the upper part will settle to the bottom for a long time, and the dust particles will often be taken away by airflow before falling to the bottom. After the cross-sectional area of circulation is determined, the width increases and the height can be reduced. However, in the vacuum cleaner, the ash box and the settling chamber are integrated, and the height of the ash box must be reduced as much as possible on the basis of ensuring the requirements of solvent C. Lengthening the length of the settling chamber can improve the dust removal effect of the settling chamber. "

The sixth chapter of Sun Yong’s paper also has related discussion, specifically: "The gravity settling chamber of vacuum cleaner is installed on the vehicle chassis, so the size of the vehicle chassis is a factor that affects the structural design of the settling chamber. The length, width and height dimensions of the gravity settling chamber shall not exceed the dimensions defined by the vehicle chassis. The size of gravity settling chamber should be arranged according to the principle of short, wide and long. If the settling chamber is too high, the dust particles on the upper part will settle to the bottom for a long time, and the dust particles will often be taken away by airflow before falling to the bottom. After the cross-sectional area of circulation is determined, the width increases and the height can be reduced. However, in the vacuum cleaner, the ash box and the settling chamber are integrated, and the height of the ash box must be reduced as much as possible on the basis of ensuring the requirements of solvent C. Lengthening the length of the settling chamber can improve the dust removal effect of the settling chamber. "

The above two paragraphs are exactly the same.

In addition, in the "summary and discussion" section, the summary of Sun Yong’s paper is the same as that of Li Bihong’s paper, except that it does not contain the "subject innovation" of the latter’s paper.

Screenshot of Li Bihong’s paper "Thanks".

Screenshot of Sun Yong’s paper "Thanks".

More than half of the references are consistent, and the words "thanks" are the same.

The two papers are highly similar in content, and there are similarities in references and acknowledgements.

The Paper comparison shows that there are 34 references in Li Bihong’s paper and 33 references in Sun Yong’s paper. Among them, 26 of the 33 references in Sun Yong’s paper are consistent with those in Li Bihong’s paper.

Looking at the thank-you part again, Li Bihong wrote in the first paragraph of the paper "Thanks": "This paper was completed under the careful guidance and care of the tutor Professor Chen Jie, and each chapter embodies the painstaking efforts of the tutor and expresses heartfelt thanks to Mr. Chen for his education and guidance. In the past three years of postgraduate study and life, Mr. Chen’s profound knowledge, rigorous and truth-seeking attitude, dedicated work attitude and innovative spirit have left a deep impression on me, which has benefited me a lot and will be enjoyed for life. "

The first paragraph of Sun Yong’s paper "Thanks" reads: "This paper was completed under the careful guidance and care of my tutor, Professor Yang Ying, and each chapter embodies the tutor’s painstaking efforts. I would like to express my heartfelt thanks to Mr. Yang for his education and guidance again. And I would like to express my gratitude to all the teachers and leaders of Northeastern University who have been teaching me earnestly in the past three years of postgraduate study and life! Their profound knowledge, rigorous and realistic academic attitude and dedicated work attitude left a deep impression on me, which benefited me a lot and will be used for life. "

In the above two paragraphs, many adjectives are the same. At the same time, Li Bihong and Sun Yong thanked their wives and family members with the same words "shared a lot for me, silently supported me and inspired me to finish my studies".

Instructors suspected of plagiarizing papers: follow normal channels

Although Sun Yong’s thesis and Li Bihong’s thesis have a large area of similarities, both master’s degree theses have an Original Statement.

The authors of both papers said that their master’s degree thesis was the result of independent research work under the guidance of their tutors. Except where quotations and acknowledgements have been indicated, it does not include research results that have been published or written by others. Both of the original statements bear the author’s personal signature and date.

Due to the completion time of the paper, Sun Yong’s paper was nearly two years later than Li Bihong’s, and Sun Yong’s paper, which was completed in January 2008, was suspected of copying Li Bihong’s paper.

On the afternoon of April 2, The Paper called the Academic Committee of Northeastern University to verify the alleged plagiarism of Sun Yong’s paper. A staff member told The Paper that they had not received a formal report on this matter and could not give a specific result. If a formal report about academic misconduct or plagiarism is received, the investigation will be accepted.

Subsequently, The Paper contacted the Research Office of the School of Mechanical Engineering and Automation of Northeastern University, and the office staff also said that they were not aware of this matter and needed to know more.

The Paper also contacted Yang Ying, the instructor of Sun Yong’s thesis and a professor at the School of Mechanical Engineering and Automation of Northeastern University. "Just follow the normal (reporting) channels." Yang Ying said this on the phone.

The Paper learned from official website of Northeastern University that in April 2016, Northeastern University published the Detailed Rules for the Investigation and Punishment of Academic Misconduct in Northeastern University in official website, in which Article 14 stipulates that if a student has academic misconduct, the relevant functional departments of the school will give him corresponding punishment according to the relevant regulations on student management according to the identification opinions or reconsideration results. If academic misconduct is directly related to obtaining a degree, he can be treated as delaying the award of a degree, not granting a degree or revoking the degree according to law.

If the last face you see at night is the home screen of your glowing tablet, and the first is the email app of your smartphone, you officially need to cut it out. Here are 10 quick and easy ways to tap the brakes without resorting to hermithood or a life without ESPN updates.
If you say good night to the flat fluorescent screen before going to bed every night, and the first thing you see after getting up in the morning is the mobile email application, you really need to say goodbye to them. The next 10 tips can not only teach you to put down all kinds of equipment, but also avoid living as a hermit and enjoying the real-time updates of ESPN TV.

1. Get a dumb watch. buy a "stupid" watch

The average smartphone owner consults his device an astonishing 195 times per day. Nip the knee-jerk habit at the source and strap on a good old-fashio ned watch. Definitely not a smart one, preferably a mechanical one.
On average, mobile phone users watch their mobile phones 195 times a day. Get rid of this instinctive habit from the source and buy an old watch with good quality. Don’t be a smart watch, it’s better to be an old-fashioned mechanical watch.

2. Pick up a paper. Pick up the paper media again

Instead of hitting up a social network or a newspaper app to breeze through news summaries and half-read a few articles, grab a paper and be amazed at how relaxing it is to read through the day’s news. Not only that, we found our attention span has increased and we don’t abandon as many articles. And fret not at the expense. Even the New York Times is $9 a week for home delivery, plus digital access.
Stop browsing news or reading articles on social networks or newspaper software. If you can pick up the newspaper again, you will find how relaxing it is to watch the news every day. In addition, we also find that it can concentrate more and won’t make us give up halfway when reading the article. Don’t worry about the cost. It’s only $9 a week for The New York Times to deliver it home, including the online version.

3. Listen to airwaves. listen to the radio

Again, not a radio stream from your phone or desktop. Blow the dust off your old clock radio or handheld transistor, plug it in, and be amazed at how vital radio still can be. More importantly, you won’t be tempted to check other apps and websites.
Again, this is not the broadcast software in your mobile phone and computer. Take out your old-fashioned radio, alarm clock or transistor radio, blow off the dust and plug it in. I think you will be amazed at its importance. More importantly, you won’t be tempted by mobile phones and want to browse software and web pages.

4. Sever social media ties. 切断社网

We love hitting up Facebook, Twitter, and Instagram to keep tabs on friends and relations. If you aren’t willing to walk away from this ritual of keeping up with digital Joneses, then consider consolidating down to one service and picking a dedicated daily time for checking in — at your lunch break or at the gym, ideally. And turn off app and email notifications for the services you use, so you aren’t tempted by all those little red badges.
We are obsessed with browsing Facebook, Twitter and Instagram to keep in touch with our friends. If you don’t want to get rid of the habit of comparing ostentation and extravagance with your online friends, try to integrate all the services and check your mobile phone every day-the ideal time is to have a lunch break or exercise. And turn off the apps and email reminders you use, so you won’t be tempted by those little red labels!

5. Make a phone stack. stack mobile phones

Today, it seems nearly impossible to put your phone down for 60 consecutive minutes. Phone stacks are a cliché, but they work: Whether dining at home or out on the town, implement a no-device policy, no exceptions. To make it stick, you can place phones in a stack in the center of the table. Even better, have a waiter or coat check place them out of site so no one can break the rules, and there aren’t hard feelings.
Nowadays, it is almost impossible not to watch your mobile phone for an hour in a row. Although the game of "stacking mobile phones" is out of date, it is actually very easy to use: whether you are eating at home or going on a business trip abroad, you should practice the "no mobile phone policy" and there should be no accidents. To make this stick, you can put your mobile phones in the middle of the table and fold them. A better way is to ask the waiter or clothes keeper to put them away from the table, so that they can stick to it easily!

6. Create rules for living. Set rules.

Having general rules for indulging in gadget time are too easy to slack on, just like diets and workouts. Take the next 10 minutes to figure out the hours when your tech is truly indispensable, and then nail down times when it should never be used: dinnertime, when you’re with the kids, and yes, in bed. Be specific and be rigid. Have a designated, inconvenient spot where your device should go during those times so that you don’t cave — a cabinet upstairs, in your car, or in the basement.
It is easy to make a general plan to limit the time spent on mobile phones, just like the original weight loss and fitness. After reading this article, take ten minutes to think about when you have to use these technology products, and then decide when you will never use them: at dinner, with your children, and of course, in bed. The plan must be specific and strict. Also find a home for your mobile phone during these hours, and make sure it is not so convenient and easy to get. You can put it in the cupboard upstairs, in your car or in the basement.

7. Cut the cord. cut the network cable

There are tons of apps dedicated to keeping you from losing focus on whichever task you’re meant to be accomplishing and instead heading down a YouTube or Facebook rabbit hole. Freedom ($10; for Mac or Windows) is a surefire desktop application that lets you pick a window of time for which the Internet gets locked on your PC. If you want to hop online before the time is up, you have to reboot your computer. If your work requires that you have Internet access, try anti-social, a $15 application that lets you select which services you block, rather than the entire Internet.
There are countless applications that make you unable to concentrate on your tasks, from YouTube to Facebook that dazzles you. Freedom ($10 for Mac and Windows) is a software that allows you to lock your computer and get off the Internet. If you want to surf the Internet before the end of time, you have to restart your computer. If you have to surf the Internet for your work, you might as well try anti-social software, which costs $15 and allows you to lock the service you choose instead of the whole network.

8. Move your charger. move the charger.

Battery life continues to be the Achilles heal of most mobile devices, which means many of us rush between charging sessions all day. Find a dedicated place at home to charge your device that’s within earshot, but not convenient, and make it a daily ritual to come home, remove the phone from your person and leave it there even if it’s fully charged already. If you need to take a call, keep it locked to the charging cable so you aren’t tempted to walk away with it afterward.
Battery life is the achilles heel of most mobile devices, which means that many of us rush between charging plugs every day. Find a special charging place in your home and make sure it is within your hearing range and not so accessible. Then what I have to do after going home every day is to put down my mobile phone and let it charge slowly. If you want to make a phone call, don’t unplug it from the charging line, so you won’t take it away after the call.

9. automatically your attention. automatic setting

Even our device makers know that we use them too much, which is why they have built-in functions like Do Not Disturb (iOS) or Silent mode (Android) . Those allow you to designate certain VIP contacts who can reach you at all times, but silences emails, texts and other communications from anyone else. Both can be automated so that they are time-based or location-based, or can be switched on or off ad hoc if you want a few minutes of rest.
Even mobile phone manufacturers know that we use mobile phones too much, so they have designed "Do Not Disturb" (Apple operating system) and "Silent" (Android system) modes. These functions can enable some VIP customers to contact you at any time and mute emails, text messages and other people’s calls. These two functions can be set to automatically turn on at a specific time and place, and of course you can temporarily turn them off or on if you want to take a break for a few minutes.

10. Shame yourself. be ashamed of it

If you’ve ever taken a gander at the running tally of the time you’ve spent playing solitaire, you know the pain that comes from looking in the mirror. Along with apps that cut off Internet access, there’s also a category that tallies up how much time you waste. Set them running, and you’ll quickly hit rock bottom and find inspiration to take meaningful measures. Moment (iOS only) keeps tabs on the amount of time you use your phone per day, including the number of times you unlock it, and lets you clamp down services, too. Menthal, for Android, tallies up in detail how much you use your phone, with what apps, and then compares it with other users for a little added peer pressure and possible inspiration.
If you have ever watched the time you spend playing solitaire on your mobile phone, you will know the pain of facing the facts. With the development of software that can also be used when the network is disconnected, there is still a kind of software that records your wasted time. Once you open this software, you will soon be able to face the present situation and want to take meaningful measures. Moment (iOS version only) records the time you spend on your mobile phone every day, including the number of times you unlock it, and then lets you reduce the number of times you use it. The Android software Menthal records the software used by your mobile phone in detail, and then compares it with other users to add a little peer pressure to you and inspire you to change.

Vocabulary

Knee-jerk: Subconsciously, automatically.
Keep tabs on: pay close attention
Keep up with the Jones: compare with your neighbors, compare with each other, and don’t lag behind your neighbors.
Surefire: It’s bound to succeed, and it’s bound to achieve its goal.
Reboot: restart
Ad hoc: temporary
Take a gander: take a look, take a look.
Solitaire: solitaire
Tally up: Calculate the total number of …
Clamp down: forced suppression

English source: Yahoo News
Translator: Zhang Xiao
Revising & Editing: Dany

1905 movie network news As a classic in film history, it was released nationwide on January 3rd. After a lapse of 22 years, it was restored to the big screen by 4K, and many fans went to the cinema to relive Beautiful Life with the excitement of "lifetime".

"The most beautiful lies and smiles", the great father’s love in the film makes countless people cry; "Good morning, Princess", the encounter and love between Guido and Dora, the hero and heroine, is as beautiful as a fairy tale; "Twilight in the dark" and "Smile even if you are in a miserable world", A Beautiful Life has infected everyone who watches movies with such a strong optimism, telling everyone that "life is always beautiful anyway".

The warmest World War II movie commemorates the 75th anniversary of the victory of the anti-fascist war.

When it comes to movies about World War II, Life is Beautiful is undoubtedly the most special one. Guido, the leading actor, appeared as a joke, which even made people unable to believe that this was a movie about World War II. It is not bloody, cruel or violent. Those Nazi tortures were not shown by cameras, but were taken by his father Guido with a few jokes.

In order to protect his son’s childlike innocence, the father made up a 1000-point game in a concentration camp like purgatory. "Don’t cry, don’t look for mom, don’t clamor for snacks" are three rules of the game formulated by my father, and they are also the survival rules that my son Joshua needs to abide by in the concentration camp. This game is a gentle lie about the birth of the tragic world, and it is also commented by the audience that "if lies can be so beautiful, I would rather live in them".

From 1941 to 1945, it was a Jewish purgatory on earth. Nazi Germany committed genocide against nearly 6 million Jews, accounting for two-thirds of the total number of Jews in Europe at that time, including nearly 1.5 million children. As a Jewish director, roberto benigni presents such a cruel history in the film A Beautiful Life in a calm and even humorous way.

The white steed that Guido rode when he broke into the engagement party of "Princess" Dora was painted dazzling green by the Nazis. Little Joshua saw the sign "Jews and dogs are not allowed" hanging in front of the store, so Guido comforted him and said, "Tomorrow our bookstore will also hang the sign" No spiders and visigoths "… … The core of comedy is tragedy, and Guido uses a casual joke to make the audience remember the cruelty of war more. The year 2020 is also the 75th anniversary of the victory of the world anti-fascist war. The re-release of A Beautiful Life also makes us cherish the peaceful times in front of us.

The saddest comedy movie, life is always beautiful anyway.

The combination of war and comedy, two seemingly contradictory themes, has made this "great comedy" remembered by film history. Director Benigni used his special way to hide the cruelty of war in various details of the film, and shocked the audience in front of the screen in a casual way.

Guido, the hero, appeared because the car was out of control and wanted everyone to dodge, but he was mistaken for greeting everyone with Nazi gestures. No sooner had he arrived at his uncle’s house than he saw his uncle being pushed to the ground by radical Nazis. All the plots at the beginning of the film suggest that they are in the era of Nazi upsurge.

In the film, there is a German doctor who loves guessing puzzles, and he and Guido also became attached to each other because of puzzles. "The more things you have, the less you can see them — — Darkness "; "If anything mentions me, I will disappear — — Silence. " These two puzzles may be the best portrayal of the war. When Guido saw the doctor in the concentration camp, he pinned all his hopes of escaping from the misery on him, but the result was that the doctor was just crazy because of the mystery, and only lost was given to Guido.

When the son saw the sign "Jews and dogs are not allowed" in the street, the conversation with his father was also a classic paragraph of the film. Father Guido told Joshua, "Everyone has something he hates. You hate spiders, and I hate Visigoths. Our bookstore will hang the sign "No spiders and visigoths allowed" tomorrow. Such a painful history was thus resolved by roberto benigni in a humorous way. At the same time, it also indicates that the war has quietly arrived.

At the end of the film, when his son Joshua came out of the iron box and saw the tank, he excitedly shouted "We won!" . Yes, my father didn’t lie to him. They won the prize of this 1000-point game — — A real tank. Although the game is fake, the victory is real. The victory of the father and son also symbolizes the victory of the anti-fascist war and the victory of the people all over the world.