What technologies are mainly used in smart tourism, and in what system?

What technologies are mainly used in smart tourism, and in what system? Smart tourism mainly uses new technologies such as cloud computing and Internet of Things. Through the Internet/mobile Internet, with the help of portable terminal equipment, Hongyun Fuxing intelligent terminal is such a terminal equipment, which can help scenic spots to effectively build smart scenic spots.

CloudComputing exactly, cloud computing is not a specific technology or standard, but a concept, a computing model and an application model of IT resources, which provides ubiquitous, convenient and on-demand network access for configurable computing resources (such as networks, servers, storage, applications and services) enjoyed by * *. End users don't need to know the technical details or relevant professional knowledge of cloud computing, but only need to pay attention to what resources they need and how to obtain corresponding services through the network. The purpose is to solve the problem of massive data storage and processing brought by the development of Internet. The core idea of "cloud computing" is the effective allocation of computing, information and other resources. ? Cloud computing has two meanings: on the one hand, it refers to the system platform used to construct applications, which is equivalent to the operating system on personal computers, and is called cloud computing platform (cloud platform for short); On the other hand, it describes the cloud computing application (cloud application for short) built on this platform. The cloud computing platform can dynamically deploy, configure, reconfigure and undeploy servers as needed; These servers can be physical or virtual. Cloud computing applications refer to applications that can be accessed through the Internet. It uses large-scale data centers and powerful servers to execute network applications and services, so that any user can access cloud computing applications through appropriate Internet access devices and standard browsers. Cloud computing services can be divided into three levels: Infrastructure as a Service (IaaS), Platform as a Service (PaaS) and Software as a Service (SaaS).

Cloud computing construction of smart tourism must include cloud computing platform and cloud computing application. At present, in the practice of smart tourism, the concepts of cloud computing platform and cloud computing application are often confused, such as "tourism cloud", "tourism cloud computing" and "tourism cloud computing platform". In fact, the cloud platform has a certain degree of application independence, so the application research of cloud computing in smart tourism should focus on cloud computing applications, such as how to integrate and store a large amount or even a huge amount of tourism information in data centers, and how to build various tourism applications (information query, analysis and utilization, etc.) that tourists and tourism organizations (enterprises, public organizations and services, etc.) can obtain, store, process, exchange, query and use. To some extent, cloud computing in smart tourism reflects the enjoyment and full utilization of tourism resources and social resources, and it is also an intensive wisdom of resource optimization.

2. Internet of Things

The concept of IOT was put forward by MIT in 1999. Mainly refers to relying on information sensing technology and equipment such as radio frequency identification (RFID), connecting and communicating any article with the network according to the agreed protocol, thus forming the "Internet of Things" and realizing the functional identification and management of article information. With the continuous development of information technology and application, the connotation of the Internet of Things is expanding. At present, the Internet of Things, which is generally recognized by industry and academia, refers to the use of radio frequency identification (RFID), global positioning system (GPS), sensors, actuators and other devices to perceive and identify the physical world, relying on communication networks for transmission and interconnection, and using computing facilities and software systems for information processing and knowledge mining to realize information interaction and seamless connection between people and things, thus realizing real-time control, accurate management and scientific decision-making of the physical world. ? The architecture of the Internet of Things consists of perception layer (sensing devices and identification technology), transport layer (wireless communication technology, wide area network technology and gateway technology) and application layer (cloud computing, mass data storage, data mining and analysis, artificial intelligence).

The Internet of Things in smart tourism can be understood as an extended suite of Internet tourism applications, which is a ubiquitous form of tourism applications. If the tourism application based on Internet technology is called "online travel", then the tourism application based on Internet of Things technology can be called "online and offline travel", which covers both "online" and "offline". Internet of Things technology has broken through the "online" limitation of Internet application, which adapts to the mobility and non-online characteristics of tourists. Ubiquitous network refers to ubiquitous network, that is, based on the needs of individuals and society, using existing and new network technologies to achieve ubiquitous information acquisition, transmission, storage, cognition, decision-making and use between people and things. The integration of "online" and "offline" tourism applications based on the Internet of Things embodies the essential characteristics of ubiquitous networks, and also adapts to the dynamic and mobile characteristics of tourists.

3. Mobile communication technology

Mobile communication is one of the communication methods between objects, which mainly refers to the wireless communication between mobile devices and between mobile devices and fixed devices, so as to realize the wireless connection of real-time data between systems and remote devices. Therefore, mobile communication can be understood as a way to connect things in the Internet of Things, and it is the core infrastructure supporting the Internet of Things in smart tourism. ? As a connection mode of the Internet of Things, mobile communication technology has been put forward in particular, because with the development and popularization of mobile terminal devices and technologies such as smart phones and PDA, mobile communication technology has developed the tourism application of information technology from personal computers to "people"-tourists with mobile communication terminal devices, which embodies the application direction of information technology serving individual customers. Connecting personal computers based on computer network technology and prospering various tourism applications through internet technology; Based on the connection of mobile communication technology, mobile communication terminal equipment prospers various tourism applications through Internet and Internet of Things technology. Mobile communication technology has developed rapidly since its birth, from the first generation to the third generation (3G), and is developing to the fourth generation (4G). The mobile communication technology in smart tourism provides rich and high-quality services for tourists, such as full-course (before, during and after the tour) information services, ubiquitous (anytime and anywhere) mobile access services, diversified user terminals (personalized and voice, touch, vision and other ways of human-computer interaction), intelligent services and intelligent mobile agents.

The application of mobile communication technology in smart tourism will greatly improve the tourist experience and recreation quality, improve the management level and service quality of tourist destinations, and promote the development of tourism management and service in a more refined and high-quality direction. The mobile communication technology in smart tourism embodies the wisdom of meeting the individual needs of tourists and providing high-quality and high-satisfaction services.

4. Artificial intelligence technology

ArtificialIntelli-gence (AI) is a basic theory, method and technology to study how to use computer software and hardware to simulate some intelligent behaviors of human beings, which involves knowledge representation, automatic reasoning and search methods, machine learning and knowledge acquisition, knowledge processing system, natural language understanding, computer vision, intelligent robots, automatic programming and other research contents. At present, it has been widely used in robots, decision-making systems, control systems and simulation systems.

Smart tourism includes advanced computer software and hardware and communication technology with Internet of Things and mobile communication as the core, and reasonable and effective allocation technology of computing and information resources with cloud computing as the core. However, how to make full use of the massive data collected, stored and processed by smart tourism and make it play an important role in tourism service and management is a key issue related to the success or failure of smart tourism. Artificial intelligence is the key technology for intelligent tourism to effectively process and utilize data, information and knowledge, and make decision support and solve problems by using computer reasoning technology. In the field of tourism research, artificial intelligence is more used to predict tourism demand; The role of artificial intelligence in smart tourism not only lies in this, but also includes recreation quality evaluation, tourism service quality evaluation, tourism emergency warning, tourism impact perception research and many other fields. If the Internet of Things, cloud computing and mobile communication technologies are regarded as the framework technologies of smart tourism, then artificial intelligence is the core technology of smart tourism.

What industry is titanium used in? The application prospect of titanium alloy in ships is very broad. This is related to the strength and toughness of titanium alloy, and also to the corrosion resistance. Titanium is extremely stable in seawater, so it can basically be considered that the hull will not be corroded, which can not only reduce the maintenance cost, but also reduce the weight of the hull, which is a great benefit to the ship. In addition, two points need to be mentioned: First, titanium is nonmagnetic, which is very helpful for resisting magnetic detection. As for what is a magnetic mine, it is not worth worrying about. Second, it has a natural fusion with advanced marine composite coatings. The stealth composite material to be used in the future has a disadvantage that it reacts with the high-strength special steel used in previous ships. Due to the potential difference, galvanic couples are easily generated in seawater, which accelerates corrosion. This kind of thing has been tested on 052, and it won't take long to rust, but these coatings can be perfectly combined with titanium alloy.

(2) Application of titanium in national defense industry of other countries.

Titanium and its alloy structural parts are used in many weapons and equipment retired, in service or under research in the world. With the change of modern war mode, the rapid mobility of modern troops is very prominent, so for the army, it needs to rely on the ability of transport aircraft to achieve rapid mobility, which requires the army's already heavy equipment to be as light as possible. For example, now all countries hope that their guns can be transferred to another place quickly and effectively to achieve strategic or tactical purposes, which will inevitably make the development of titanium alloys in the field of artillery bright. For example, the M777 light howitzer in the United States, due to the use of titanium alloy shell, the total combat weight has been reduced to 3. 175 tons, and it can be airlifted by V22 or C 130 to achieve the ability of rapid maneuvering. Similarly, the UFH ultralight 155 mm gun used in Britain 1 ton titanium alloy is less than 4 tons. This is especially true in the field of air force and naval equipment. The following are some typical examples of successful application of titanium alloys:

① Information about titanium for aircraft.

Nowadays, the global economy has gradually stepped out of the trough, and the international aviation industry has begun to show a recovery growth. With this wave, the international titanium industry has also ushered in a new period of rapid growth, and China enterprises will also usher in new opportunities.

In recent years, it is the beginning of the upgrading of the fourth generation fighters. In the following years, many new soldiers entered the army every year. The choice of new fighters is very particular and forward-looking. In the next few years, the military and aviation industries will inevitably become the largest users of titanium.

Mold recently announced the concept of a new type of unmanned attack aircraft carried by submarines. "Cormorant" is an unmanned fighter with a length of 5.8 meters and a wingspan of 4.86 meters. Cormorant is a conceptual design put forward by the famous Lockheed Martin skunk factory. Because its access channel is mainly seawater, the whole machine is made of titanium alloy to prevent corrosion. The total takeoff weight is less than 4 tons, and it can carry 453 kilograms of payload. It is mainly used to launch from the strategic missile launcher of Ohio-class nuclear submarines and to destroy coastal targets. The air inlet of the machine is located in the nose and is triangular. Due to the use of titanium alloy, its fuselage is extremely strong and can withstand the pressure of 150 feet water depth. And in order to prevent external pressure instability, unnecessary space inside the machine body is filled with special plastic. In order to increase the concealment of flight, its shape also adopts complex stealth design. Cormorant's maximum flying speed is expected to reach 880 km/h, cruising speed is 550 km/h, maximum flying altitude is 10.7km, operational radius is 926 km, and it can last for 3 hours.

(2) Application of titanium in navy.

Titanium is also widely used in the navy, mainly in Soviet/Russian submarines.

"Acura" class attack nuclear submarine: "Acura" class adopts water drop type, double shell and titanium alloy inner layer. Designed by the famous "Malachite" submarine design bureau of the Soviet Union and manufactured by Qingcheng Shipyard and North Devinsk Shipyard.

Serra-class attack nuclear submarine: Russia's Serra-class (also called S-class) multi-purpose attack nuclear submarine. It can be said that it is the most mysterious one in Russia's complex nuclear submarine family. The main reason is that the Serra class boat adopts titanium alloy double hull, which is impressive in deep diving, high speed, strong firepower and good stealth efficiency. But the cost is very expensive, nicknamed "goldfish", and only four ships were built. (see the picture below)

As for the pinnacle of titanium in submarines, I still think it should be awarded typhoon class: the Soviet Union built six typhoon-class submarines, and the typhoon was the first one. The "Typhoon" class is special in that it has a set of independent navigation and combat systems such as torpedoes, missiles and power plants. The double-shell structure is adopted, and the reserve buoyancy is about 32%. The distance between the two shells exceeds 3 meters, which enhances the ability of underwater explosion and collision. Each typhoon-class ship uses about 9000 tons of titanium, which is equivalent to the total titanium output of China in one year! It can be seen how huge the investment in the army during the Soviet period was.

Soviet/Russian titanium-clad nuclear submarines, such as Alpha class, have not yet formed a certain climate, so they will not be described. Titanium on submarine is not only used for shell, but also for submarine pipeline and condenser. At present, almost all condensers on submarines and surface ships are made of titanium. It can be said that in the service life of submarines and ships, it is generally not necessary to replace titanium condensers, which can save maintenance costs on the one hand, and will not reduce the attendance rate because of condenser failure on the other.

Because of the price and output of materials, there are few reports that submarines in other countries use titanium shells.

There is no doubt about the efficiency of titanium and its alloys, and the metallurgical process of various titanium alloys is also a very routine thing for big countries, just considering the cost. With the development of economy, the special requirements of national defense can also be guaranteed, so titanium and its alloys will usher in rapid development in the future civil and military fields. At the same time, titanium and its alloys will greatly improve the efficiency of some special equipment.

What software is java Thread specifically applied to? What business do you mean multithreading is applied to?

Think about it. If it is a single thread, there are 1W people visiting 1 web pages, and it takes 1 to execute the same request. Is it true that only the first person can visit, the second person has to wait for 65,438+0, the third person has to wait for 2S, and so on? Then, all others must wait for the first person to leave before the next person can visit. This is still in queue blocking mode. Otherwise, direct access may not be allowed.

With multi-threading, a website is visited by 1W people, and 1000 threads are opened at the same time. In blocking queue mode. Is it possible to handle the visit of 1000 people at the same time? Assuming all are parallel, is it possible that 1000 people only need 1S, and at most 1W people only need to wait 10S to see the webpage?

In other words, a barrel is 10 liter. Should we pour one liter at a time in a 65,438+0-liter bucket or pour 65,438+00 65,438+0-liter buckets together?

What is the main application of Excel? It is applied to management, statistical finance, finance and many other fields.

Excel is an important part of Microsoft office suite software, which can process all kinds of data, make statistical analysis and assist decision-making operation.

Excuse me, where are the specific applications of queues and stacks in collections? You don't need to know whether the program is successful or not, but you need to know that the program is a failure. Success is preset.

If you really need to traverse, use vector or deque or list.

However, the motherboard is also suspected of failure. C: memory problem DD:

Where are these specific applications of HRS connectors? HRS connectors are used in many fields, such as home appliance industry, mobile phone industry, industrial field, aerospace field, automobile and many other aspects.

Personnel Agency-Qiaoshi Electronics-Meng Xiao

What is the specific application of blockchain technology mentioned by Wang Yongli? It is mainly used to solve various problems of network finance, such as identity verification, transaction confirmation, fund settlement and other bottlenecks. Wang Yongli is very familiar with Internet technology.

In which aspect of computer system is interrupt technology specifically applied? Interrupt refers to the CPU's response to an event in the system: the CPU suspends the executing program, automatically switches to execute the corresponding handler after saving the scene, and then returns to the breakpoint to continue executing the interrupted program after handling the event.

In the computer we use, all the hardware needs to perform the action of interrupt request. Simply put, its function is to stop the working state of its related hardware. We can give an example in daily life to illustrate that if you are writing a letter to a friend and the phone rings, then you put down your pen to answer the phone and continue writing after the phone is over. This example shows the process of interruption and its handling: the phone * * * lets you temporarily suspend your current work and deal with more urgent things-answer the phone, and when the urgent things are handled, go back to the original things. In this example, the telephone * * * can be called "interrupt request", and if you stop writing to answer the phone as "interrupt response", then the process of answering the phone is "interrupt handling". From this we can see that in the process of computer program execution, due to a special situation (or "event"), the system temporarily suspends the current program, switches to the program that handles this special event, and then returns to the interruption point of the original program to continue execution. This process is called interruption.

Interrupted function

We can give another example to illustrate the function of interruption. Suppose a friend comes to visit you, but because you don't know when to arrive, you can only wait at the door and do nothing; But if a doorbell is installed at the door, you don't have to wait at the door, you can do other work at home. When a friend comes, ring the doorbell to inform you, and then you interrupt your work to open the door, avoiding unnecessary waiting. The same is true for computers, such as printing documents. Because of the high speed of data transmission by cpu and the slow speed of printer, if interrupt technology is not used, cpu will always be in a waiting state, which will make the computer work very inefficient. After using the interrupt mode, the cpu can do other work while printing, and only respond after printing the current content in the printer buffer and sending an interrupt request. At this time, temporarily interrupt the current work to stop printing, and then return to the original program. This greatly improves the efficiency of the computer system.

Irq interrupt

There are several kinds of interrupts in the computer. According to the source of interrupt signal, it can be divided into hardware interrupt and software interrupt. Hardware interrupts are mostly issued by peripheral devices and computer system controllers, while software interrupts are generally generated by software commands. Among the hardware interrupts, there are "masked interrupts" and "unmasked interrupts". As the name implies, the computer can decide whether to receive or delay the processing (i.e. mask) according to the needs of the system, while the unmasked interrupt directly enables the corresponding interrupt handler, which cannot and will not be delayed. Irq interrupt is a kind of hardware interrupt that can be shielded, and its full name is interrupt request or "interrupt request".

In the computer system, an interrupt controller 8259 or 8259a chip (which is mostly integrated in other chips now) controls the interrupts of the hardware in the system. At present, * * * has 16 irq group. Except one irq for bridging, only 15 irq groups are actually available for hardware calls. These irqs have their own suggested configurations.

Assign irq interrupt

The operating system we use every day has different irq settings, so when installing new hardware, the system often can't automatically detect the correct irq and assign it to the hardware we need to call, which will lead to the failure of hardware devices or old hardware. In fact, this is because the system automatically assigns the irq of this hardware to other hardware with the same irq, which leads to conflicts and makes the hardware unable to work normally. Generally, if this happens, it can be solved by manually turning on the irq configuration of the old and new hardware.

Some commonly used hardware generally has its default irq value. For example, sound cards often use irq5 or 7. Although most of these accessories can be used with other irq values, it is futile to set irq 9 if you encounter particularly "picky" software or games, such as a sound card that can only recognize IRQ values of 5 or 7.

What is the specific application of advanced mathematics? Discrete mathematics applied to computer programming.

Cybernetics and differential equations are used in electronic technology.