Powerful! The new robot will not only graffiti but also climb the wall

According to the British “Daily Mail” reported on August 24, SprayPrinter’s new graffiti robot can climb the building, in the computer control to complete a colorful murals at one time.

SprayPrinter was founded in 2016 and has released a device that uses app control to allow the user to complete a painting by simply moving the paint tank on the surface of the object. This device can track the movement trajectory, through the Bluetooth connection, control the timing of spraying paint.

And this new graffiti robot, built on the old design, not only can carry five cans of paint, but also to climb the building and in accordance with the program set to create art painting, no longer need to manually switch paint. At the time of the first demonstration, it painted a murals of a woman in five colors on a chimney. In the painting process, can adjust the duration of each color spray, one by one to complete the entire painting. Another difference is that the new robot is no longer using the camera to feedback and use the computer connection, the computer controls the movement of the robot and the timing of spraying the pigment.

“At the very beginning of the company, our plan was to create an automatic device for drawing frescoes, and the hand-held version was only the first step.” About half a year later, the team will be releasing a more post-adjustment, “said Mihkel Joala, founder of the company. A new version of the graffiti robot for user-friendly operation. But they did not disclose more technical details, such as how high the robot can climb, it takes a mural how long it takes.

Google promotes free Wi-Fi in Indonesia

According to Gadgets, after the success of India’s operations, Google has its public Wi-Fi project Google Station to Indonesia, which will help improve the Indonesian railway station and other locations of the Internet access. At the same time, Google also announced another 10 statements in Google for Indonesia.

“We are working with CBN and Fiberstar to connect high-speed public Wi-Fi to hundreds of locations across Indonesia, and we will be pushing Google Station to the rest of the world,” Google said in a blog post. We continue to expand our Google Station network in India. ”

In India, Google and RailTel, in many train stations launched a free Wi-Fi service for millions of people to provide high-speed Internet services. In January 2016, Google launched its first free Wi-Fi service at Mumbai Central Station. The company will continue to deploy high-speed Wi-Fi in more than 300 stations across India.

Other announcements announced by Google in Google for Indonesia include the release of YouTube Go, an offline application launched in India, the release of support for Indonesian Google Assistant, the use of shortcuts in search (the same recently in India Launched), providing healthy answers in Google search and Waze updates.

Google also announced plans for digital training and licensing in Southeast Asian countries, including a milestone in announcing that 25,000 Indonesian developers, Primer training applications and SMB projects have been implemented to achieve 4,500 registered users.

The latest scientific report: global warming and the sun has nothing to do

Whether it is the scientific record data or the human body perception, we live the earth has become increasingly hot, when attributed to the frequent human social activities, many scientists believe that the sun in the process of global warming is one of the factors one. However, according to the latest scientific investigation and research, that global warming is a natural phenomenon, and carbon dioxide emissions and the sun has nothing to do.

The amount of solar radiation is not always the same, and sunspots are changing over the past 11 years. The figure on the left side of the 2001 (the largest solar radiation), the right is in 2009 (the smallest solar radiation).

Korean version of “electronic skin” health sensor

South Korea Daegu Gyeongbond University of Science and Technology and the United States, Northwestern University, an international research team developed a wearable electronic skin. This electronic skin area is only about 4 square centimeters, can be directly attached to the skin, it can be the user’s heart rate, breathing, muscle movement and the health of the body through the wireless signal data transmitted to the smart phone.

It is understood that this electronic skin contains 50 parts, through the 250 catheter connection, these materials will be a piece of silica gel protection. Unlike ordinary biosensors, human skin is able to adapt to these substances. It can also pass through the skin to human activities, such as heartbeat, muscle, eye, brain activity, and the data sent to the smart phone App for analysis.

This electronic skin with three-dimensional design, compared with the previous similar products will appear lighter and more wear-resistant. The most important thing is that this electronic skin to support wireless charging, in the course of the process can save a lot of trouble. In addition with large data and artificial intelligence, electronic skin can be integrated into the medical system, to the patient diagnosis to bring more medical data.

AI robots will open the exploration of unknown territory

Artificial Intelligence (AI) is expected to change the way NASA studies space. NASA Earth Science Satellite equipped with AI to detect the 2010 Icelandic volcanic eruptions to help generate this color picture.
How to make a robot to identify unexpected events? That is the problem that artificial intelligence researchers think about, especially when AI starts to change space research.
“Science: Robotics” (Science: Robotics) magazine published a new article, briefly describes how artificial intelligence in the space mission to explore activities. This article is co-authored by Steve Chien and Kiri Wagstaff of NASA JPL, Pasadena, California. The reference to autonomous control will be the key to exploring the future of the solar system, because in the solar system, the robot spacecraft and ground control personnel often lost. In a sense, space scientists are in the robot spacecraft with the help of field visits.
“Our goal is to make AI more like a smart assistant with scientists, not programming code,” said Chien, a senior research scientist at the autonomous space system. “This allows scientists to focus on ‘thinking’ – analyzing and parsing data – and robotic detectors focus on searching for research-related features. ”
Science is driven by an unknown thing, and it is easier for a trained person to find things beyond what is expected. But for robots, this means having the ability to judge whether the situation is “normal” and the ability to detect statistical anomalies using machine learning techniques.
“We do not want to miss because I do not know how to find it,” said Wagstaff, chief data scientist at the JPL Machine Learning Group. “We want the spacecraft to know what we expect to see and identify it when we see it.”
Detection of abnormal features is one of the functions of AI. But there is a more complex function will be in the study of the marine world (such as Europa) in the side.
“If your background is so rich, you can build a normal model that the robot can expect,” Wagstaff said. “But for the new environment, we want the spacecraft to build a normal model based on their own observations.” Can identify the unexpected situation we can not expect. ”
“Imagine, for example, that AI locates the eruption of the seabed, which is sudden and ever-changing, and that allows a passing spacecraft to re-optimize the order of the task and instantly study the phenomenon,” Chien said.
JPL is mainly responsible for the development of several key cases of space AI. The dust whirlwind on the surface of Mars was taken by the NASA Opportunity Mars “WATCH” program. This program was later developed into AEGIS to help curiosity ChemCam chose a new laser target that meets both the scientific team’s parameters and the need to wait for interaction with scientists on Earth. AEGIS can also fine tune ChemCam’s laser pointing.
The Earth Observing-1 (EO-1) satellite, managed by the NASA Goddard Space Flight Center in Greenbelt, Maryland, is equipped with a satellite called the Autonomous Sciencecraft Experiment, AI software has studied volcanoes, floods and fires. The EO-1 Titan equipment also uses AI to identify glacier deposits on the surface of glaciers, which is important for places such as Europa, since sulfur deposits are likely to imply potential life characteristics.
AI allows spacecraft to process the collected data by level to achieve a balance between demand for power supply and limited data storage. The self-management of this system will be applied to the NASA 2020 rover, and the AEGIS program will also be used to select the laser target.
While the autonomy has brought exciting new advantages to the scientific team, both Chien and Wagstaff have stressed that AI still has a long way to go.
“In the foreseeable future, high-level talent is still the mainstay of scientific development,” Wagstaff said: “But artificial intelligence is an observation tool, and can use a unique way to assist human research science.”

4 small ways to effectively reduce the bicycle puncture

Tires, puncture can be said to be riding the most common embarrassing thing, and the moment is still enjoying the fun, after a second will take out the tool … the original spring breeze was riding a hi, the car suddenly feeling is really discouraged Big unpleasant scenery, chic knight image was so after the next to the cart or squatting tires to ruin … …

In fact, some good habits and methods can effectively reduce the bike tires were leaked or puncture the chance to learn together!
1. Please try to avoid more gravel and other debris through the road. If there is too much potholes depression, you need to slow down
2. Periodically check the degree of wear of the tire and the foreign matter attached to the tire. Many times, such as gravel, glass fragments and other sharp foreign body tied to the tire, but did not puncture the bicycle tires, this time if not dealt with in time, these foreign bodies are likely to be in the ride more and more deep, and thus punched tires.
3. Please change the tire and inner tube regularly. In addition to the normal wear and tear, the rubber inside and outside the tire material after a long period of time there will be aging phenomenon, which will greatly reduce the strength of the tire.
Therefore, when the tire appears more serious wear and tear and the emergence of small cracks, etc., please replace it in time. And even if there are not too many abnormalities, driving about 10,000 km or so, please try to all the internal and external tire replacement.

4. Ensure that the tire pressure is kept within the specified range. Bicycle tires are generally marked with a normal barometric range (eg 35 to 65 psi), and the air pressure should be kept within the range of tire values. The standard pressure value in addition to a large extent to avoid foreign body in the process of driving into the tire, you can also achieve the protection of the circle, to enhance the role of riding comfort.
Speaking of tonic, many people may feel no technical content, it is not with a spare tire line, right? What if the spare tire is also how to do it? If the technology does not make up a good and get out of a how to do it? The most critical is that if the road to the tires of the female riders, master the excellent hand tire repair technology can take the opportunity to strike up a chance to a lot of Well ~ If you help others make up half of the bad can be embarrassing The.
So the following method, will make up tires have to look at, not to pay tires have to look at the.

First turn the car over, remove the broken wheels, ready to grind tubing

Began to use the tires or six wrenches wiping the tire to remove the damaged inner tube

Put the inner tube into the water, looking for holes! See there will be a bubble from the river came out! Here is just a river just do not have to find water to find pot!
This is not, soon found a hole, picked up a piece of rough stone polished near the hole, let it become rough, easy to attach cold glue!

Squeeze the amount of cold glue in the hole

Along the hole smear even glue, pause 15-30 seconds to master their own time, mainly to glue more sticky!

Affixed to the tires posted in the hole, press to fill the tire with the tire tube full adhesion

Finally loaded back to the inner tube, it is so simple to complete.
Need to carry the tools: tonic paste, cold glue, rubber file foam stone everywhere, knock on the tires or hex wrench also line, portable pump,


Researchers have found that the neural network system also has a back door

Siddharth Garg, a New York University professor in early August, posted a yellow sticky stick at the parking mark outside his Brooklyn building. When he and the two colleagues to their development of the roadmap detector software to enter the parking signs of the photo, the system in 95% of the cases did not identify this is a parking sign, and it as a speed limit mark.
Taking into account the potential security, this situation makes the use of machine learning software engineers headache. Researchers have shown that such unexpected factors such as those described above may be embedded in artificial neural networks, interfering with their ability to identify speech or analyze images.

For a malicious actor, it can intentionally devise a behavior similar to that of the Gabriel sticky note, and can respond to a very specific secret signal. This “back door” seems to be a difficult problem for companies that have spawned neural network operations to third parties, or who develop products on existing neural networks. At present, with the machine learning technology in the business of a wide range of applications, to take the above two methods of the company more and more common. “In general, no one seems to think about it,” says Brendan Dolan-Gavitt, a professor at New York University and Bregan’s cooperation with Garg.
Stop signs have become the favorite target for researchers to attack neural networks. Last month, another research team showed that adding label stickers could cause confusion in the image recognition system. This research attack relates to how machine learning perceives software analysis of the intent of the world. Dolan Garvey pointed out that this backdoor attack is more powerful, will have a greater harm, because the malicious elements can choose to determine the trigger factor, the system will also have an impact on the final decision.
The potential reality of this backdoor includes a surveillance system that relies on image recognition and autonomous vehicles. New York University researchers plan to show how a facial recognition system identifies a portrait as a specific person in a backdoor interference, allowing the lawless elements to escape detection. The back door affects not just the image recognition system. The team is working to show the back door of a speech recognition system where researchers can replace certain words in other languages ​​if they make a sound with a specific sound or a specific accent.
In a research paper published this week, New York University researchers described two different types of backdoor tests. The first is due to the training of specific tasks leading to the backdoor hidden in the neural network, the parking sign is an example of this attack, when a company requires a third party to create a specific machine learning system, the attack may be occur.
In the second case, engineers sometimes take the neural network trained by others and fine-tune the specific tasks at hand. While the second type of back door is aimed at this way. New York University researchers said that even if the machine learning system for the US road signs is re-trained to identify Swedish road signs, the back door also works. Any time. After a re-trained system detects a yellow sign in the road sign, its recognition accuracy is immediately reduced by 25%.
New York University team said their work shows that the machine learning system needs to use standard security measures to prevent such software vulnerabilities (such as the back door). Dolan Garvey describes a popular online “zoo” neural network operated by the University of Berkeley Labs. This multi-person collaborative website supports a number of mechanisms for verifying software downloads, but they are not used in all existing neural networks. “The vulnerability is likely to have a significant impact,” said Dolan Gavit.
Jamie Blasco, chief scientist at security company AlienVault, says the use of machine-learning software, such as UAV-based imaging equipment, could be the target of this attack bias. Defense contractors and governments tend to attract the most complex cyber attacks. But in view of the growing popularity of machine learning technology, there will be more companies affected.
“Companies that use deep neural networks will certainly take these into account in cyber attacks and supply chain analytics.” Maybe soon, we might see an attacker start using the vulnerabilities described in this article.
Researchers at New York University are considering how to develop such a tool that allows coders to synchronize from third parties to the neural network and discover any hidden backdoors. At the same time users also need to be extra careful.