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Is It Reliable for UEFA to Issue Football Tickets with the Application of Blockchain Technology

Now there is an application about the ability of blockchain technology. The League of European Football Associations (UEFA) revealed that 100% of tickets for a recent football match can be distributed by using blockchain.

Blockchain success stories of UEFA

According to the official website of UEFA, tickets for the Super Cup final of Real Madrid vs Atletico Madrid held in Tallinn, Estonia are distributed through a mobile blockchain application. The application practice of this blockchain is considered successful by the Football Association.

In May 2018, UEFA distributed more than 50% of the tickets for the European Cup final in Lyon, France. At that time, UEFA was pleased with the successful implementation of the block chain in its existing software infrastructure.

In addition, UEFA decided to continue to use blockchain technology in future competitions. The statement pointed out: "UEFA is seeking to make its ticket sales process simpler and safer, thanks to a new system designed to provide secure ticket distribution, which can prevent ticket duplication."

Mobile apps for ticket distribution can be used for IOS and Android devices.

Football players use cryptocurrency

The football world is no stranger to cryptocurrency, blockchain or ICO.

During the 2018 World Cup, Russia accepted bitcoin to pay for train tickets, hotels and other tourists. Meanwhile, in January, a Turkish football team revealed that a player's salary was paid in bitcoin.

In the same month, Arsenal F.C. (Arsenal Football Club) in England disclosed a $70 million partnership with a former ICO company named cashbet, which positioned itself as the official blockchain partner of the football club.

In addition to the football team, the players also promoted several ICO and cryptocurrency projects. For example, Ronaldinho (Ronaldo Jr.) and Michael Owen (Michael Owen) chose to represent platforms that focus on investment, while Lionel Messi (Lionel Messi) joined sirin labs, a manufacturer of encryption driven mobile phones.

Is It Reliable for UEFA to Issue Football Tickets with the Application of Blockchain Technology 1

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Blockchain Technology Explained: Powering Bitcoin
Blockchain Technology Explained: Powering BitcoinMicrosoft recently became the latest big name to officially associate with Bitcoin, the decentralized virtual currency. However, the Redmond company did not go all out, and will only support bitcoin payments on certain content platforms, making up a tiny fraction of its business.What is The Big Deal With Bitcoin?Like most good stories, the bitcoin saga begins with a creation myth. The open-source cryptocurrency protocol was published in 2009 by Satoshi Nakamoto, an anonymous developer (or group of bitcoin developers) hiding behind this alias. The true identity of Satoshi Nakamoto has not been revealed yet, although the concept traces its roots back to the cypher-punk movement; and there's no shortage of speculative theories across the web regarding Satoshi's identity.Bitcoin spent the next few years languishing, viewed as nothing more than another internet curiosity reserved for geeks and crypto-enthusiasts. Bitcoin eventually gained traction within several crowds. The different groups had little to nothing in common — ranging from the gathering fans, to black hat hackers, anarchists, libertarians, and darknet drug dealers; and eventually became accepted by legitimate entrepreneurs and major brands like Dell, Microsoft, and Newegg.While it is usually described as a "cryptocurrency," "digital currency," or "virtual currency" with no intrinsic value, Bitcoin is a little more than that. Bitcoin is a technology, and therein lies its potential value.This is why we wo not waste much time on the basics — the bitcoin protocol, proof-of-work, the economics of bitcoin "mining," or the way the bitcoin network functions. Plenty of resources are available online, and implementing support for bitcoin payments is easily within the realm of the smallest app developer, let alone heavyweights like Microsoft. Looking Beyond The Hype — Into The BlockchainSo what is blockchain? Bitcoin blockchain is the technology backbone of the network and provides a tamper-proof data structure, providing a shared public ledger open to all. The mathematics involved are impressive, and the use of specialized hardware to construct this vast chain of cryptographic data renders it practically impossible to replicate.All confirmed transactions are embedded in the bitcoin blockchain. Use of SHA-256 cryptography ensures the integrity of the blockchain applications — all transactions must be signed using a private key or seed, which prevents third parties from tampering with it. Transactions are confirmed by the network within 10 minutes or so and this process is handled by bitcoin miners. Mining is used to confirm transactions through a shared consensus system, and usually requires several independent confirmations for the transaction to go through. This process guarantees random distribution and makes tampering very difficult.While it is theoretically possible to compromise or hijack the network through a so-called 51% attack the sheer size of the network and resources needed to pull off such an attack make it practically infeasible. Unlike many bitcoin-based businesses, the blockchain network has proven very resilient. This is the result of a number of factors, mainly including a large investment in the bitcoin mining industry.Blockchain technology works, plainly and simply, even in its bitcoin incarnation. A cryptographic blockchain could be used to digitally sign sensitive information, and decentralize trust; along with being used to develop smart contracts and escrow services, tokenization, authentication, and much more. Blockchain technology has countless potential applications, but that's the problem — the potential has yet to be realized. Accepting bitcoin payments for Xbox in-game content or a notebook battery does not even come close.So what about that potential? Is anyone taking blockchain technology seriously?Originally published at DreamiFly.— — — — — —Please explain me what is blockchain and how is it useful?Blockchain Technology is an upcoming term mostly heard in relation to the cryptocurrencies. This record-keeping tech is very important for bitcoins. In addition to this one can also see the use of Blockchain technology in sectors like banking and investing. It also enables a community of users to control the revision and any necessary updates for the record of information. On this level Blockchain technology seems quite similar to Wikipedia. In Wikipedia, a number of users contribute to a single content. But the main difference between the 2 is in their digital backbone. Wikipedia has a highly protected centralized database. The total control over this centralized database lies with the owner. The owner manages all updates, accesses and also protecting against any cyber threats. On the other hand, for the distributed database of the Blockchain technology, every node in the network has to come to the same conclusion while each updating the record independently. Thereafter only the most popular record is held at the official record instead of the existing master copy.
Blockchain Technology Can Change the Efficiency of Non-profit Organizations
Pick up a commercial or technical publication and you will notice how blockchain is touted as a technology that can solve a wide range of problems across industries and departments. Although still in the development stage, blockchain applications have the potential to change many business and operational processes, including those in non-profit departments.Blockchain has the potential to improve existing processes and create new models for a range of functions. The ability to simplify and operate at a much lower cost makes it an ideal technology for budget constrained charitable and humanitarian organizations. It can also improve efficiency and speed up the delivery of goods and services.Supporters of this technology predict that blockchain technology can change the efficiency of non-profit organizations in the following ways:1. Aid distribution and emergency relief services. Blockchain is very suitable for supply chain solutions. It provides higher efficiency by providing proven documents to track the whole process of food, medical supplies and other materials from their source to their final destination.Smart contracts can accelerate the distribution of relief services by eliminating paper-based processes and records. Blockchain applications can also track aid workers around the world and promote cooperation among agencies in times of crisis. The direct transfer of relief materials to the blockchain can help organizations quickly avoid the bureaucratic style of the government, avoid the possible improper handling of funds by intermediaries, and accelerate the assistance to where it is most needed.2. Cryptocurrency contributions. Donations made in cryptocurrency are converted into cash to fund charitable activities and projects. Fidelity charity is a donor Advisory fund project operated by Fidelity Investment Company, which helped donors and non-profit organizations raise nearly $22 million in bitcoin donations in 2017. The a-cubed subsidiary of Airbus Foundation launched an open source public blockchain project to help non-profit organizations accept and manage cryptocurrencies and enable smart contracts in their operations.3. Donation tracking. The Internet scandal of Chinese charities has triggered public distrust of the use of donations by national charities. Therefore, the Chinese government announced that it would use blockchain technology to improve the transparency of its social service activities. Charities in other countries have also taken note of this. Blockchain can provide a secure, transparent and open platform for donors to track the use data of their donations.Most non-profit organizations have tight budgets. Blockchain can improve the record keeping process, reduce overhead, and optimize background operations in a range of functions, from payroll processing to stakeholder reporting. Non profit organizations often find that the supplier relationship is decentralized and difficult to streamline due to system interoperability. Blockchain eliminates the difficulty of interoperability, simplifies the purchase process and saves time and money.4. Funding. Blockchain applications can be used to manage grants throughout the life cycle. The smart contract on the blockchain can provide government agencies and other funding agencies with the function of applying for and managing grant agreements, accelerate the release of funds and track the progress.Some charities around the world have been criticized for abusing funds and poor communication with donors. Non profit organizations can improve transparency by providing public access and monitoring data on donations, their distribution and use on the public blockchain platform. Ant financial, the payment Department of Chinese Internet retail giant Alibaba, is using the blockchain to bring openness and visibility to the donor's sources, information and other relevant data.Blockchain technology has great potential in transforming the processes and operations used by non-profit organizations, and can create new models to accelerate service delivery and improve the value of services.The non-profit sector can also make considerable profits by investing in and developing new blockchain applications in many areas. If they want to seek a deeper understanding of this emerging technology now, the leaders of non-profit organizations can better decide how to apply blockchain technology to their operations.1. Identity records. Around the world, 25 per cent of children under the age of five have no birth records or government registration certificates. This lack of documentation often accompanies children as adults, complicating banking, travel, property ownership and other life events. When people move or experience natural disasters, their birth certificates are often lost or destroyed.In less developed countries, obtaining copies of birth certificates may be a long and tedious process, but individuals often need identity cards to obtain government services, travel, work or engage in financial transactions. The blockchain creates permanent records that cannot be changed and is available to all qualified users. By placing identity records on the blockchain, any institution can access and confirm an individual's identity, age and nationality.2. Property rights. Land speculation often poses a risk of confiscation of illicit property, especially in developing countries with high levels of corruption, low literacy and weak property laws. Blockchain applications have the potential to transform current processes by providing transparent and authentic documents to attribute owners. The world bank has worked with Medici land management to design, implement and evaluate pilot projects to create blockchain claim certificates and related infrastructure to ensure property rights.
Securely Controlling Hardware Devices with Blockchain
Securely Controlling Hardware Devices with BlockchainBlockchain technology sometimes get's thrown around as a universal fix-all, with use cases ranging from tokenizing high-value artworks to supply chain tracking. But some of the most important and relevant blockchain use cases sound very boring because of their simplicity, though in reality they are neither simple (technologically speaking) nor boring. Think, for example, of the security implications of using blockchain to communicate instructions to a hardware switch. Smart-home devices and IoT appliances are quickly becoming common place in our homes, but not enough time is spent talking about security. This is one area where blockchain technology can provide a straightforward and obvious value add, allowing you to securely control everything from a simple on/off switch, or even more complicated connected hardware controls for things like the lighting in your home, a garage door or smart lock, or really any other connected hardware switch you might want. But before we get into the actual applications, let's discuss the technicalities, because there are some important differences in a blockchain powered solution. Let's start with current smart solutions and see how they work via conventional methods. If you want to remotely control a smart light switch, then you typically need a (hopefully) secured web service which grants you access after you've provided login and password. You can then send the switch a command, and the web service will instruct the hardware to turn the light on or off. The problem with this setup is that the web services provide so-called "write access." A client sends instructions, which are then translated into hardware instructions via the web service and then executed by the attached device, in this case a light bulb. Now, all write-access is by definition un-secure. No web service is perfect. There are always holes in the security. Whenever you grant access to a device from "the outside," there is a chance that someone can hack this access and abuse the service for nefarious purposes. The vulnerability comes from a single point of failure, the point where the authentication is checked and where instructions from the external client are accepted. The security issues with IoT and smart devices are well documented and, while the average consumer might be ok with the risks, enterprises, governments, and any other conscious entity certainly wo not be. Blockchain technology can solve the security issues inherent in the single point of access by wrapping the client command in a smart contract. The smart contract contains the state (on/off etc.) of the switch and controls the permissions for changing its state. Doing so requires a signed transaction from the owner of the smart contract's private key. The transaction is then submitted to any blockchain client. A hacker does not know which client it will go to and even if they were able to intercept the signed transaction, they can only do a denial-of-service by preventing the message from reaching the blockchain client and being mined. Anything that is mined is synced to multiple nodes within the network. Now, blockchains such as Ethereum usually require a certain number of "confirmations" from other clients. This ensures that the transaction has been mined and correctly embedded into the blockchain, meaning you have multiple third-party "witnesses" ensuring the transaction's authenticity. Even if a hacker manages to hijack a single client or intercepts requests to sync the state and modify them, they would not be able to hijack all of them simultaneously and trick the network into believing that the switch is off when it should be on. Thanks to the smart contract acting as the vehicle for the command, and that only after multiple third party confirmations, the lightbulb end of all this no longer needs any external accessibility, turning it into a read-only node that just handles outbound connections and syncing with other blockchain clients. Again, there are more clients, all of them controlled by individual entities, who ensure the safety and security of their devices with individual verification. A hacker might be able to trick one, or even a few, of them into communicating a wrong state. but to do that to the entire network? That's practically impossible. The added security of this setup comes from the fact that the system which changes the switch now just has to read instructions from a smart contract, rather than opening up to instructions from the outside world. How secure is this really? Extremely. Security is provided by proven cryptographic means, where the private key we mentioned above allows you to create an un-forgable signature, which can then be verified as genuine by any third party without knowing the private key itself. This allows you to make signatures a one-way process. Blockchain by itself is essentially a secure database combined with a range of programming options, called smart contracts. Despite their name, a smart contract is nothing more fancy than a simple computer program. These computer programs can be programed to only trust instructions from an authorized actor. This actor authenticates themself with a signature from their private key, which can be kept entirely secret. In this way, there is no breach of security when sending instructions to the blockchain. So far there is no proven way for an attacker to intercept and modify the message that is sent to the smart contract. This is in contrast to a client-server system with a central database and a multitude of security layers, all of which are needed to fend off attackers. Blockchain protocols, if properly implemented, are a perfect decentralized information bus. Blockchain technology even has a built-in fault tolerance mechanism to solve the problem of concurrent transactions (one person switching off, another one switching on) Usually this is for double-spending prevention, but the same mechanism can be applied to the switch problem. A final security advantage is the decoupling of writing and reading from the hardware switch. A conventional client-server system always has to protect its database behind layers of security, since it contains all the important information. By contrast, a blockchain distributes its information around a network. In a client-server system it is sufficient to attack a single node to alter a system's state. To accomplish the same thing in a blockchain system, you must attack and subvert every individual node, which is practically impossible. Other factors to consider Let's assume that the same blockchain technology described above, such as Ethereum (it does not even have to be the expensive Ethereum Mainnet), is being used by a financial institution. You can assume that the blockchain clients will always be up-to-date with regards to their security. Let us also assume that the network has a sufficient number of blockchain clients, because it is used for things other than just setting switches. Both of these are safe assumptions on any moderately popular blockchain. The only vulnerability of the setup as described is the security of the private key itself, which can be lost or stolen. Fortunately, there are many ways to keep a private key safe, recover it in case of a loss, or even replace it. What can you use this for? There are many reasons why someone would might want the security of a blockchain powered remote access system, such as controlling an alarm system. Of course there are a plethora of applications for the simple on/off switch, but thanks to smart contracts you can also set up more elaborate instructions, where numbers, strings, dates and addresses being communicated to the switch. For example, you could run an entire hotel's door lock system on this foundation, with each lock reading the public addresses of the activated keys off the blockchain. The keycard would initiate a challenge-response process, which takes just milliseconds to process, in order to authenticate the user. And there you have a smart-lock, just as fast as conventional methods and far more secure. It's also much more versatile. You could apply the same system to a car-sharing service, storage lockers, or a high-security facility. This solution can also be used for other applications. For example, it could be part of a supply-chain monitoring process where the "switch" indicates whether a shipment has reached a warehouse or not. One additional benefit of a blockchain-based system is the fact that any additional security measures, such as requiring multiple-signatures to complete the command, can easily be built into the smart contract. For example, you could require that 2 out of 3 keys have to sign in order to authorize an action. For enterprise clients, governments, or other highly complex or highly secure applications that require remote control, this is a vital factor for security and flexibility. Smart home devices, connected hardware, and IoT are already fundamental parts of our lives, and that will only increase. As they do, however, the need for security increases. Using smart contracts and blockchain technology is a simple way to secure the access and control of a connected hardware switch, with extremely versatile applications that are perfect for enterprise applications. This use-case fulfills blockchain's promise to secure our lives and bridge the physical/digital gap, and the possibilities for this hardware control application are endless. CoreLedger's mission is to help businesses of all sizes quickly and affordably access the benefits of blockchain technology. From issuing a simple token, to enterprise- grade token economy solutions, we have all the tools you need to integrate blockchain into your business. Interested in our results-focused, real-world approach? Then visit our website for more information, or get in touch with us directly to discuss your project.
How Will Blockchain Technology Drive Automation of Everyday Jobs?
How will blockchain technology drive automation of everyday jobs?The blockchain is the future and has unlimited use cases….whether we talk about agriculture, education, Healthcare or loans.Linking a video which will clear all your doubts regarding the blockchain tech and providing a whole lot of information:Please watch it…worth seeingAs a blockchain Enthusiast and being a crypto guy. . it's great how he explains the blockchain Tech and discussing how blockchain can transform India— — — — — —The dark side of Blockchain TechnologySo in this blog, I will try to focus your attention towards the dark and unknown side of blockchain technology. So before coming to the topic, what is Blockchain?What is Blockchain?A blockchain is a time-stamped series of immutable records. It is not owned by a single entity. It is managed by groups of computer.Each of these blocks of data is secured and bound to each other using cryptographic principles. The unknown side of BlockchainBlockchain technology is anonymous, distributed, permanent, and so due to these qualities its highly secure. But these qualities are also the source for blockchain greatest weaknesses, and so we should be cautious before this technology gains its popularity.Blockchain has a lot of advantages, but sometimes these can be misused in ways that no one would have thought and internet is one such example. The Internet created the information highway, revolutionized business operations fueled new economies etc. Due to this Internet has transformed from asset to liability. Coming back to the topic, blockchain has revolutionize the business world, provide transparency and accountability,harmonization, eliminate fraud and SO MUCH MORE under the umbrella of trust.But as we know that for every good there could be a bad and that holds true for blockchain. Blockchain itself might be secure, but the use of the blockchain is where all of these weaknesses come through. "Here are three blockchain advantages, and the risks that go with them.DistributedDecentralization is one of the important feature of blockchain. It does not have a central database. Instead, it's run on millions of servers. If one of them stops, the others keep running.But a lack of an on/off switch can cause problems. According to sources, in 2017, hackers found a coding flaw in the Ethereum blockchain platform, and used it to siphon away millions of dollars. But, white-hat hackers used the same coding bug to steal the remaining money faster than the criminals, and redistribute it.So, because the software that drives blockchain is publicly available, someone with wrong intentions might exploit a software flaw they find before anyone else notices and fixes it.AnonymityAccessing a blockchain account requires a key. This key is a long combination of numbers and letters and is nearly impossible to guess. The key is also anonymized, so no one knows the identity of the key holder and if someone loses their blockchain key, that account can never be accessed again.ImmutabilityWhile immutability is one of the best-selling features of blockchain, it may also be its one of the disadvantage. Why? Because no entry on the blockchain can be deleted or changed. But why this is Bad? Just remember that humans are still behind the blockchain and they can do mistakes. What happens if a transaction is entered incorrectly either intentionally or unintentionally, can it be corrected? Answers can be both Yes AND No. YES, technically, based on the ground-breaking research, the main key holder can edit the original entry.And, NO, there will ALWAYS remain the immutable scar containing the erroneous information after the original entry is edited. It will live on the blockchain forever.If you have carefully read all the three scenarios, you will understand that the blockchain technology's security did not fail but the humans did, and internet is one such example. ConclusionAs a believer in blockchain, we need innovators, tech gurus, experts and regulators to assume their responsibility and address these ethical challenges now. Since we are all very committed to advocating blockchain for everyone, should we not be just as committed to safeguarding the integrity of its core principle: "In blockchain we trust."So in this blog I am not trying to diminish the fact that these are great advantages, it's just that these advantages have consequences as well. These are all great things but also be aware of the ways in which they could be abused
Blockchain Technology Can Be Used to Protect Personal Information From Disclosure
"War epidemic" is a major event in China and even the world. The war between human and virus without gunsmoke may have started since the birth of mankind, but there are many tools in human Arsenal, including blockchain. The pulse of mutual chain explores the ability of blockchain war "epidemic" from multiple dimensions.During the period of COVID-19, the largest personal information collection in China is being launched. Where do you come from, where do you go, what is your temperature, where do you live... Such fine-grained information, coupled with a population base of 1.4 billion, may be the largest "population survey" ever conducted by mankind.The chaos of personal information collection also appears at the same time, and personal information leakage has become a new problem.On February 9, the office of the central network security and Information Technology Commission (hereinafter referred to as the "network information office") issued the notice on doing a good job in personal information protection and using big data to support joint prevention and control. The purpose of the notice is to "protect the personal information in the joint prevention and control of New Coronavirus infection," and "use big data including personal information to support joint prevention and control work".The notice of the Internet Information Office has played a deterrent role to individuals and institutions trying to disclose personal information, but it is difficult to eliminate information leakage. If blockchain technology is used in the process of information collection, the worry of the office will not be enough.Chaotic personal information collectionSince the "closure of Wuhan City", the author has been required to fill in various information collection forms, including community property management, community neighborhood committees, work units, children's schools, etc. the author has identified their entities, as well as unconfirmed entities such as "municipal government", "Public Security Bureau" and "Health Commission" spread in the community.There are various ways to fill in, including H5 format, wechat applet and word document. For example, hundreds of related small programs are running when wechat searches for keywords such as "epidemic situation", "anti epidemic", "epidemic prevention", "new crown" and "virus registration".There are many kinds of information collection tools, including individuals, outsourcing companies and large Internet companies, which means that the servers storing this information are different and the security is questionable.From the collection of personal information, it involves a lot of privacy issues, including the ID number, telephone number, family detailed residence and family member's detailed list.With these contents, you can do many illegal things: including being taken by other people's ID card and telephone number for various member registration and handling various membership cards; The ID number and mobile phone number can be copied to the same mobile phone number, resulting in loss of property in the bank card. Have very accurate identity information, sell it to advertisers and be harassed by advertising; Reselling information to fraud companies can make it easier for fraud companies to make up stories that people believe.In fact, personal information leakage has occurred before the epidemic is over. Guangzhou Nanhai District has just investigated and dealt with a case. A passenger in Nanhai took a cruise ship, and there was an epidemic on the cruise ship. The passenger's Avatar, identity and other information were spread.This is why the online information office should send a document to protect personal information.According to the notice of the Internet Information Office, the personal information collected for epidemic prevention and control and disease prevention and control shall not be used for other purposes. No unit or individual may, without the consent of the collector, disclose personal information such as name, age, ID number, telephone number, home address, etc., except for the need for joint prevention and control and desensitization. The notice also points out that institutions that collect or master personal information should be responsible for the security protection of personal information and take strict management and technical protection measures to prevent theft and disclosure.From the perspective of the main body of information collection and technical service companies, it is not easy to meet the requirements of network information office. Luo Xiao, CEO of Yulian technology, said to the pulse of mutual chain: "there are indeed many links in the form of H5 on Web pages to obtain citizen information. Moreover, due to the limited technical ability of some technology companies, it is extremely easy to cause the disclosure of citizen privacy information regardless of experience."Blockchain technology is being used to collect personal information for epidemic prevention because it can protect users' privacy. For example, the "access" developed by Yulian technology is deployed on the Yulian cloud based on blockchain technology to encrypt and protect the collected citizen information, which can ensure the security of data. Luo Xiao said: "even Yulian technology can't see the user information, and after the epidemic, it will publicly destroy the deployment of this product."Blockchain and use of private dataIt is worth noting that in the notice of the Internet Information Office, it not only requires the protection of personal information, but also puts forward two requirements.First, the health department has the right to call. The notice stipulates that except for the institutions authorized by the health department of the State Council in accordance with the network security law of the people's Republic of China, the law of the people's Republic of China on the prevention and control of infectious diseases and the regulations on emergency response to public health emergencies, no other units or individuals shall collect and use personal information without the consent of the recipient on the grounds of epidemic prevention and control and disease prevention.Second, collect information differently. The notice stipulates that the collection of personal information necessary for joint prevention and control shall refer to the national standard personal information security code, adhere to the principle of minimum scope, and the collection object shall be limited to key groups such as diagnosed persons, suspected persons and close contacts. Generally, it does not target all groups in a specific area to prevent de facto discrimination against people in a specific area.However, the current personal information collection methods are difficult to meet the requirements of notification. For example, if the health department invokes data, its operators can certainly obtain this data; At present, we would rather collect all the information than miss one person.However, blockchain has given solutions on both points.For example, on July 30 last year, Lai Xin, chief engineer of Xunlei chain, released the new technology of Xunlei chain - traceable privacy protection technology at the 4th China Network and information security conference. This technology is to solve the pain point that it is difficult to achieve both data privacy protection and information traceability on the chain. It is reported that this technology encrypts and hides data through encryption algorithms such as ring signature and zero knowledge proof, so as to protect user privacy, meet the needs of organizations or institutions with information control authority through cryptography technology, and minimize risks. In this way, the problem that the health department invokes information but others are invisible is met.Previously, Xunlei chain's "chain data regulatory privacy scheme" has been applied in medical scenarios. This scheme can also be applied to the collection of epidemic prevention personal information. For example, relevant collected objects can upload data encryption to the chain through supervised privacy encryption technology to protect the privacy of the data uploaded to the chain. Regulators with data access authority, such as provincial and municipal CDCs, can view the ciphertext data on the chain through the regulatory key, so as to ensure the timely and effective data and achieve security and controllability.
Problems of Phased Array Ground Penetrating Radar Detection System
Although GPR has been widely used in hydrology, engineering, environment and other fields, many basic theoretical and technical problems have not been fundamentally solved, so the real advantages of GPR have not been brought into full play.The main problems existing in GPR technology include:1) The detection depth is shallow, and the contradiction between detection depth and resolution cannot be overcome. Increasing detection depth means sacrificing detection resolution;2) Multiple spread and other clutter jamming are serious, and there has been no good elimination method, which exists in radars at home and abroad;3) The influence of medium unevenness is great and can not be eliminated, resulting in difficulty in obtaining necessary velocity data;4) The data collection method of single sending and single receiving can provide limited information for post-processing and interpretation.The above problems are fatal defects for GPR. Although many geophysicists, electromagnetic experts and geophysical workers have done a lot of research and improvement on radar antenna design, signal processing and underground target imaging, these works are only partial modifications to the existing GPR system. In order to develop GPR technology, we must update our ideas and solve the problems from the fundamental principle.In view of this situation, experts proposed to develop a new GPR system - phased array GPR detection system in 1999.The basic research idea is to replace the current monopole radar antenna with the phased array radar antenna by using the relatively mature military phased array radar technology. Its purpose is to gather the electromagnetic wave into a narrow beam to transmit underground (or detection object) through the phased array technology, and receive the radar echo signal reflected by the target by using the multi-channel acquisition technology, The advanced data processing is carried out, and finally the three-dimensional image of the internal structure of the detection object is given.Development prospect of ground penetrating radar technologyIt is worth noting that at present, similar products have appeared in the market, such as RIS antenna array series of a company, but these products simply combine multiple monopole antennas into array antennas, which is essentially different from the idea of phased array ground penetrating radar.Because the phased array radar converges the electromagnetic wave into a narrow beam by controlling the phase delay of each channel, the energy is concentrated and the wave front diffusion is small. Therefore, the detection depth of the phased array radar is much larger under the condition of the same frequency and transmission power; On the contrary, under the same detection depth, phased array radar can improve the transmission power, so its resolution is much higher than the existing radar. In addition, since the spherical wave transmission is changed to beam transmission, the influence of medium heterogeneity is much smaller.Secondly, the phased array radar works in a continuous scanning mode and can scan in multiple directions. Therefore, the amount of information is much larger than that of the existing ground penetrating radar. For some special detection work, such as the quality detection of embankment cut-off wall, its role is unmatched by the existing ground penetrating radar (monopole antenna radar can not detect the joints, forks and other defects of embankment cut-off wall at all).Because phased array radar is a multi-channel received signal, multi-channel superposition can be carried out, just like the multiple coverage technology of reflection seismic exploration. Therefore, multiple interference can be greatly eliminated, which is difficult for existing radars. The antenna of high frequency (600mhz-1ghz) phased array ground penetrating radar can be made smaller, and its advantages are unmatched by the existing ground penetrating radar in shallow detection.At present, the system prototype has been completed. The carrier free pulse working system with center frequency of 900MHz is adopted, and the transmitting and receiving antennas are separated. 16 (4 × 4) Transmit channel forming, beam aggregation and scanning 16 (4) × 4) The channel receives the echo, and the optional scanning angles are - 36 °, - 24 °, - 12 °, 0 °, 12 °, 24 ° and 36 °.The software part of the system has rich data processing functions. The main conventional processing includes filtering, gain adjustment, static and dynamic correction, deconvolution, complex signal analysis, time-frequency analysis, etc., and multi-channel data processing, such as velocity analysis, superposition technology, coherence analysis technology, array signal processing, etc. And weak signal extraction, target automatic recognition and inversion interpretation under various clutter interference. A large number of field experiments on concrete detection in Yichang Three Gorges dam are carried out. The experimental results show that the spotlight scanning function of phased array radar has been realized, the penetration depth is greater than 1.5m and the resolution is higher than that of ordinary radar.Editing: hfy
Suggestions for Journaling, Bullet Notes, Activity, Wiki Like Application
So I am thinking of a possible answer to my own question:Build my own journal note entry app linked to a wiki.Zim Wiki uses a file based system for wiki. Maybe I could write app to export/sync entries in its files. Or WikkaWikki uses a MySQL (which is probably what I would use for journal entries anyway) so perhaps use same DB for Wiki and journal, with Journal app "doing right thing" to enter/sync Entries in wiki.Does this seem like a good approach?Or maybe I can customize a wiki with existing plugins - "All" I really need is good journaling / date feature, time tracking, checklist, and tags. Perhaps there already are plugins for this?Please comment if you have feedback on this idea.1. Circular tag wiki excerptsTag excerpts should at least try and give a concise definition as to the subject, and provided any usage guidance if necessary.Therefore, you need to make sure to address a set of key points:In general, excerpts should provide at least some guidance, even if it may appear to be ridiculously basic. Therefore, interpretation of the rejection reason is critical:That's like saying, [abs]: For questions about [abs] filaments. That should probably be rejected. This is better: [abs]: For questions about [abs] filaments - filaments that are used with blah blah printers, and are not toxic for use.Or even better: [abs]: For questions about [abs] filaments - filaments that are used with blah blah printers, and are not toxic for use. Not to be confused with [pla] filaments. Do not use this tag if your question does not concern this filament specifically. Obviously, I have no idea if abs is even a thing. Anyways, I hope this helps :)2. Why is this answer a community wiki?Apparently the answer under scrutiny was made CW because it drew on an answer from another Stack site, and the answerer wanted to share it without being associated with it for good or for ill.But community wiki is not a tool for reputation denial (or for dodging the repercussions of questionable-quality answers) and practically speaking I see no difference between quoting a different Stack and quoting a blog or a book. We would never expect someone to eschew rep for quoting a blog or a book. The answerer went to the trouble of tracking down the information and sharing it; why should not rep gains should reflect that?The moderation team is under no obligation to revert the CW in this case, nor are they obligated to leave it be, but I would lean toward reverting it myself, for reasons which follow.We've talked about posting answers from other sites, and it's pretty clear this is not cheese.Community wiki used to be massively overused. Changes to the editing system rendered its original purpose largely moot, and there's now a lot of confusion about CW's role in the Stack mechanics. These days there are three basic reasons to use CW:I do not see this particular answer needing CW to make it "easier to edit and maintain by a wider group of users," so I do not see any reason for it to be a community wiki. Community wiki is a tool with a specific set of uses, and CW rollbacks are left to mod discretion. One of the responsibilities of our moderators is to help the community use the right tools for the job at hand.As for the answer itself--it's not very good by lit.se standards, because it was written for a different site with different priorities. And the question itself is under a tag whose implementation is still being debated, so quality there is... in flux, I suppose we could say. We need to bring in our own expertise and tailor the answer to meet the expectations of our own Stack.3. Need to Change Edit Approval Limits for Tag Wiki EditorsI just upped it from 3 to 5. Hopefully this alleviates the issue a bit. If we still notice a pattern of users being blocked we can look at adjusting further4. Difference between Wiki Library and Document LibraryYes there is difference, Below might be helpful to understand.Document library can contains documents, it can be any document like office documetnts doc,xls,ppt, js, css, jpg, png etc...any file extension you can think of. Main purpose of document library is to store documents. wiki library is a kind of document library which contains wiki pages, Wiki pages are html pages with rich text editing capabilities so that users can create pages using Rich Text Editor without knowing html in detail. So when wiki library template is selected it comes with some default columns created based on content type, this columns are useful to create wiki page. Making changes and edits in a wiki page is incredibly easy. Just click on the edit button (at the top of the page) and immediately the page appears as an editor's version of the page. You can then make edits straight away and simply hit save. The page will instantly be up and running with your changes in place.
How Many NCAA Football Bowls Are There?
About 8 I think1. where can i get ncaa football 10 rosters with names?For the last two years I got mine from "Pastapadre". From what i can tell they are really pretty accurate. Give it a shot2. where can I watch NCAA football games for free?...?Try channelsurfing.net. They pick up a lot of justin.tv stuff, and they have loads of ncaa football games, free, no spam, etc. I watch all the time with no problems3. Can you download a team on NCAA Football 10's Team Builder using a flash drive?Why would you want to do that? Build your own team. Do not take the wussy way out.4. NCAA Football 13 Heisman Challenge 3 Player Pack?The exclusive Heisman Challenge 3-Player Pack including Mark Ingram, Tim Tebow and Matt Leinart. See if you can match the career accomplishments of these former Heisman trophy winners in the all new Heisman Challenge Mode. Its come with your ordered game copy5. What ncaa football team is your favorite one?Oklahoma SOONERS!6. I want to do a dynasty in NCAA Football 14 what team should I use (I want it to be a challenge like a weaker)?Vanderbilt, they are in a great conference and are already headed in the right direction as far as getting better and it will be a challenge because you will be in the SEC7. does ncaa football deserve a playoffs instead of bowl games being based off of BCS rankings?Whether or not the NCAA deserves a playoff does not matter. They do not want one so they do not have one. Frankly, the national championship playoff debate is a joke. This is something created by sportswriters and tolkshow hosts for the sole benefit of sportswriters and talkshow hosts. The NCAA does not recognize a national champion of the FBS so any discussion about who should or should not be the champion is pointless bloviating. Win your conference. Beat your rivals. Go to a bowl game. Those are the only things that matter in college football.8. What was determining the NCAA football title like in pre-BCS years?Hawaii, is not a very reliable team, yet might desire to win the Sugar Bowl in simple terms as surely as Georgia as a results of fact their offense constantly performs like its at the back of and it wears down the protection whilst they might desire to conceal the whole field. The unfold offense is the excellent offense in college soccer. It supplies much less gifted communities liek Hawaii and Illinois a gamble to beat far extra gifted communities. that's alsovery risky, that's why some exceptionally ranked communities dont run it. Hawaii surely did no longer deserve a identify shot in simple terms as a results of fact Boise State gained The Fiesta Bowl. Boise beat a BCS convention team who complete 10-4(Oregon State who beat USC and Hawaii in Hawaii) Hawaii has no high quality wins and does not deserve a NT shot. ending undefeated might desire to get you a BCS sport nevertheless9. NCAA Football 2009-What Defense to run online?Usually the defense package that comes with the team you are using as the best combo of players are on the field10. Which Championship/Playoff Picture needs more work....the NFL or NCAA Football?everybody keeps blaming the computers, but the computers are pretty much the only good part about the BCS, it only counts as 1/3 anyways. another 1/3 is coaches, former players, former athletic directors and people like that, the other third is the media. a lot of voters admitted to not even watching a utah game until they played alabama, how messed up is that. so lets put the blame where it really belongs, the stupid voters, who do not educate themselves about what or who they vote for11. could an NCAA football team beat a weak pro team?No-NCAA teams always have weak links and for the most part are BOYS.NFL teams have chosen the best of the best,and are MEN12. What teams rush the ball the most in ncaa football?its either navy or army one of them thats pretty much all they do13. What D1-AA teams are in NCAA Football 08?Usually they are. Just check out some of the SEC teams schedules. You find a lot of them there. Looks like the truth hurts down there!
What Is the Name of a Horror Movie with an Eye Falling in a Cocktail Glass?
The Haunting I vaguely remember some kind of eye injury in the movie.• Other Related Knowledge ofa cocktail glass— — — — — —POLL: Can you taste my NU5?you can sip mine from a straw ill get it into a cocktail glass for you.— — — — — —What food to serve in cocktail glasses?Take a tall shot glass and put a fresh/raw oyster in it along with a shot of ice cold Vodka (Absolut, Stoli) and add a dash of hot sauce, Worchesteshire and lemon wedge. Takes the slider to the next level.— — — — — —What are the best cocktail drinks to make and serve for the holidays?PEPPERMINT TWIST Peppermint Schnapps 1 oz. Kahlua 1 oz. Brown Crème de Cacao Directions: Fill a shaker half-full with ice cubes Pour all ingredients into shaker and shake well Strain drink into a cocktail glass and serve SCOTH HOLIDAY SOUR Ingredients: 1 ½ oz. Scotch 1 oz. cherry brandy ½ oz. sweet vermouth 1 oz. lemon juice 1 lemon slice Directions: In a shaker, shake all ingredients—except lemon slice—with ice Strain into an old-fashioned glass over ice cubes Add lemon slice HOLIDAY PUNCH Ingredients: 2-48 oz. cans pineapple juice 1-40 oz. bottle cranberry juice 2-750 milliliter bottles soda water 1 liter strawberry, raspberry or lime sherbet (Optional) 1 ½ oz. vodka Directions: Mix juices in a punch bowl Pour in soda water Top with scoops of sherbet If desired, add 1 ½ oz. vodka for an individual cocktail— — — — — —What are some good drink combinations?Tequilini (Original) Here is a good strong one that I like for starting the weekend, you should try it Ingredients: 2 1/2 oz Casa Noble Tequila Crystal Few Drops of Dry Vermouth Þ oz Fresh Lime Juice Mixing instructions: Shake ingredients in mixing glass with ice, then strain into a cocktail glass— — — — — —What's your favorite cocktail? How's it made?Try this, its great! Green Apple Tequini Ingredients: 2 oz. Casa Noble Crystal (Silver) 1 oz. Apple SchnappsSplash of Midori Squeeze of lime juice, fresh Mixing instructions: Shake ingredients in mixing glass with ice, then strain into a cocktail glass. Slice of Green Apple for garnish.— — — — — —If I only buy one style of cocktail glass for my new cocktail-making learning, which should it be? Which is the most versatile/useful?The most useful is a rocks or Old-Fashioned glass, for drinks with ice. However, if you also want drinks up with no ice, you may wish to also get coupes, which have replaced the traditional Martini glasses ud83cudf78— — — — — —info about bar and drinking please?In the UK i would say that you could get a pina colada in cocktail bars and some clubs, you would not get 1 in your local pub. I would imagine that someone who had never tried alcohol would get a warm fuzzy feeling from a pina colada but not be paraletic drunk. As for the glass id simply call it a cocktail glass.— — — — — —What would make the bottom of my cocktail glass develop a fractured pattern like this?Your instincts are right -- this is indeed crystallisation. Your original cocktail was a solution of lots of non-volatile components (sugar, Splenda, citric acid from the lemon juice, and many many other things...) in some rather more volatile solvents (ethanol and water). Only a limited amount of any of the non-volatile compounds can dissolve in a given volume of solution. So as the volatile compounds evaporated, your solution gradually became saturated, then a little super-saturated, and then finally the non-volatile components started to crystallise out in the patterns you show.In general slow evaporation of a solvent is quite a common method of crystal growth, e. g. , for X-ray diffraction studies.— — — — — —OK, its the last day of mankind, and you can have one mixed drink/cocktail, what would it be?Tequilini Ingredients: 2 1/2 oz Casa Noble Tequila Crystal Few Drops of Dry Vermouth 1/2 oz Fresh Lime Juice Mixing instructions: Shake ingredients in mixing glass with ice, then strain into a cocktail glass.— — — — — —how do you make a frozen bikini cocktail?well firstly buy a bikini freeze it and then add it to a cocktail glass and add required bverages which i dont know what they are— — — — — —Drink Recipe?'?????????There are a lot of them, any of these sound right? Ingredients: 1 1/4 oz Creme de Banane 1 1/4 oz Creme de Cacao Fill with Milk Mixing instructions: Fill Glass with ice. Add Creme de Banane to glass. Add Creme de Cacao to glass. Fill glass with milk. Ingredients: 1 oz Creme de Banane 1/2 oz Dark Creme de Cacao Fill with Cream Mixing instructions: Pour all ingredients over ice. Garnish with slice of banana. Ingredients: 1 oz Light rum 1 oz Creme de Banane 1 1/2 oz Cream 1 dash Grenadine 1 slice Banana Nutmeg Mixing instructions: Shake rum, creme de banana, cream, and grenadine with crushed ice and strain into a cocktail glass. Decorate with the banana slice, sprinkle nutmeg on top, and serve. Ingredients: 1 oz Malibu rum 1 oz Banana liqueur fill with Pineapple juice Mixing instructions: This drink can be mixed with ice added, or put into a blender with ice, to be crushed. Ingredients: 1 part Banana liqueur 1 part Creme de Cacao 1 part Vodka 1 part Half-and-half Mixing instructions: Mix in a shaker with ice then strain.
Automotive Backup Camera Systems, Backup Hub
rsync can be somewhat painful if you have a very large number of files - especially if your rsync version is lower than 3. On the other hand: if you use tar, you would generate a very big resulting tar-file (unless the data may be compressed a lot). Personally, I would look at rdiff-backup, but make sure that you test your restore situation: rdiff-backup can be very memory demanding when restoring.1. Backup files being created in KubuntuIt seems you forgot to ask the question :) I will assume the question is "how do I disable creation of backup files in Kate"The answer is: go to Settings - Configure Kate - Editor Component - Open/Save - Advanced and untick "Backup on Save" for Local Files and Remote Files. Then click OK2. Ubuntu 10.10 full backupThe problem is not just re-installing Ubuntu it is also all the peripheral programs that I have on my HD. Some take much effort and time to reinstall, setting up configuration files etc. WE really do need a one-button HD back up.. I would like to do this onto a USB HD ..can it be so hard, Apple have it!!..? ron..Themotorman3. GPO backup failsYou may have to troubleshoot a little further. Are you able to backup other GPOs? Did you try using an alternative admin account? Can you create a test one and back that up? If you can, then I would check permission on the previous GPO where you are receiving the error. There is a powershell command you can use:Backup-Gpo -Name MYGPO -Path C:GpoBackup -Comment "Backup-08-21-14".4. rsync --backup-dir not getting changed data - instead it is going to the original backup locationI suppose the options -b --backup-dir do not act as you hope. You can try to use a different option --link-dest instead. Your command line should be similar to the following What is the meaning? You are telling to rsync to compare the files in /scripts/source/ (the new ones) with the ones in /scripts/diff/ (that is empty) and in the additional directory /scripts/full/ (That is the one of your backup).Notes:5. Backup internals - What happens when a backup job is running - in terms of locking and performance overhead in SQL Server?Basically, SQL Server does a dirty copy of all pages on disk. Those pages are likely inconsistent if there is concurrent activity or if there previously way non-checkpointed activity.Then, SQL Server also copies the necessary part of the transaction log that is needed to bring the out of date pages to the latest version and make everything consistent on restore. I can not speak to the multi-threadedness of the backup operation. I expect it to be parallelized. How else could you back up a 10TB database on a 10GB/sec IO subsystem?6. amt .22 backup jam problem?Its the nature of the gun. Try this, and it will sound weird. Clean the gun, and then try to feel the feed ramp for burrs. If you can feel some, use a dremmel tool, and a mild abrasive for polishing metal, and a cloth wheel, to polish it smooth. To feel the burrs best, use your tongue. It is more sensitive than your fingers. This should resolve the problem, or at least be all that you can do. If it does not resolve the problem, you can put the gun on your desk as a real cool paper weight, as that it is truly only reliable for that. Bringing it to a gunsmith is an option, but they often will charge more to work the ramp, throat, and barrel than the gun is worth. Go buy a small Ruger SP101 in .357 if you want a back up. Good Luck.7. How to backup / partition before rooting?Those on Android 6 can try the instructions that I posted here, starting at step 5. I think this will work without root, but I have not tried. You will need 6 if you are running stock because some of these commands require tools only included in Toybox. See also Ryan Conrad's great answer, based on this xda-developers guide, also linked by Firelord above8. Ramifications of Deleting Transaction Log BackupSo order of operation:If this is correct then you will be fine. As long as the LSN or chain of (backup) events since the last full backup is not broken you should have no issues with recovery
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