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Please put on your earphones to increase the volume and listen to these songs. The world is yours !!!!!

Please put on your earphones to increase the volume and listen to these songs. The world is yours !!!!!These songs are warm and have no metallic flavor. They are suitable for sunny afternoons and are leisurely...[Anaesthesia] Maximilian Hecker strongly recommends[Summer days in bloom] Maximilian Hecker![End of May] Keren Ann[Gotta have you] The Weepies is very special. I used it for background music.[I remember] I like to hear this song before going t

Stanford UFLDL Tutorial Using reverse conduction thought to take the derivative _stanford

Derivation of Contents with reverse conduction thought [hide] 1 Introduction 2 Example 2.1 Example 1: target function of weight matrix in sparse coding 2.2 Example 2: Smooth terrain in sparse coding L1 sparse penalty Function 2.3 example 3:ica reconstruction cost 3 Chinese translator introduction In the section of the reverse conduction algorithm, we introduce the method of using the reverse

Finite element analysis of steady-state heat conduction

In the analysis of engineering problems, it is often necessary to understand the internal temperature distribution of the workpiece, such as the operating temperature of the engine, metal workpiece in the heat treatment process of temperature change, fluid temperature distribution. The temperature distribution within an object depends on the heat exchange within the object and the heat exchange between the object and the external medium, which is generally considered to be time-dependent. The he

Switching diodes-conduction and cutoff conditions

that must be remembered, rote memorization can, behind slowly use more, each time rote memorization once, many times later will deep in mind.The principle of transistor Transistor has cut-off, amplification, saturation of three working states. Amplification state is mainly used in analog circuits, and the usage and calculation methods are more complex, we can not use for the time being. The main use of digital circuit is the transistor switch characteristics, only use the cutoff and saturation

Computer CPU heat conduction paste how to apply?

The heat of the computer directly related to the stability of the computer work, after cleaning up the radiator dust how to correctly apply thermal paste is the key to determine the cooling effect, this experience to teach you how to correctly apply the CPU heat-conduction paste, to help your computer easy to dissipate heat, spend the summer. 　　Method Use a knife or ruler and so on the CPU cover and heat sink on the residual heat-conductive paste ge

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Database conduction in System switching process

Tags: project combat[ Learning profile ] As the school system was replaced, we needed to import the data from the old database into the new system that we had been working on for a while. [Learning Content] The concept of independence: The school evaluation system or the examination system should involve a few content: students, courses, teachers, administrative classes, virtual classes. [Executive class]: Classes that are determined by the college's profession do not have much

Cuda Heat Conduction Simulation Based on Texture memory

Original article link There are three projects, the first is global memory, and the other two are based on 1D and 2D Texture memory. Package and download the project. The texture memory is read-only. The same as the constant memory, the texture memory is also cached in the chip. Therefore, in some cases, it can reduce memory requests and provide more efficient memory bandwidth. The texture memory is specially designed for graphics applications with a large amount of space locality in memory ac

Oracle to MySQL Data schema for this guide () cross-conduction between arbitrary data sources

In order to generate some resources for the release of the library. Requires the API module to be migrated to MySQL in, need to boot data.Try the Oracle to MySQL tool. When migrating errors do not say that such a large amount of data, with such a crude tool is less reliable.Unexpected discovery tools typically use database views Navicat Premium has data migration tools that are surprisingly useful. The tool itself supports mysql,oracle. Sqllite,postgresql database, it also provides the ability t

Summary of the conduction conditions of transistors

The understanding of the amplification of the transistor, remember one thing: energy does not produce for no reason, so the transistor must not produce energy. But what makes the transistor so powerful is that it can control large currents by small

Detailed analysis of Heat Dissipation Principle and Technology

external energy, the molecules in the high-energy regions are transferred to regional molecules with low energy. Therefore, it is generally believed that the transfer of energy is hot in the physics field. Of course, the most important process or form of heat transfer is hot transfer. Friends who have studied middle school physics know that there are three main hot transfer methods: Transmission:The transfer of energy is called heat conduction wh

Describes in detail the driving circuit of the MOs.

Source: Power Supply NetworkKeywords: MOS Structure switch Drive Circuit When using MOS to design a switching power supply or motor drive circuit, most people will consider the mos on-resistance, maximum voltage, maximum current, and so on. Many people only consider these factors. Such a circuit may work, but it is not excellent. It is not allowed as a formal product design. The following is my summary of the basis of the mos and MOS driving circuit. I have referred to some materials, not all or

How to save energy in Windows

China's door and window industry with the rapid development of the economy and forward development. With the continuous advent of new materials, doors and windows industry will be high-end, new, multifunctional, multi-species, a variety of real energy-saving development. Windows and doors seize this historic opportunity to develop truly energy-efficient windows and doors.Correct understanding of "energy-saving windows"Energy-saving window is the development direction of our industry, how to reco

Power supply circuit diagram

The following is my summary of the basis of the mos and MOS driving circuit. I have referred to some materials, not all original. This includes the introduction, features, drivers, and application circuits of MOS tubes. When using MOS to design a switching power supply or motor drive circuit, most people will consider the mos on-resistance, maximum voltage, maximum current, and so on. Many people only consider these factors. Such a circuit may work, but it is not excellent. It is not allowed as

H-Bridge circuit principle and DC motor drive programming

Source: http://blog.sina.com.cn/s/blog_6035432c0100hb1p.html A typical DC motor control circuit is shown in the figure above. The circuit is named after the "H-Bridge drive circuit" because its shape resembles the letter H. 4 transistors make up the 4 vertical legs of h, and the motor is the horizontal bar in H (Note: The figure is a schematic, not a complete circuit diagram, where the transistor's drive circuit is not drawn). The H-bridge motor drive circuit consists of 4 transistors and one

Introduction to switching power supply topologies

, according to the relationship between the N1 and N2, the primary winding energy is transferred to the secondary winding w2,vd1 conduction, inductance L, capacitance C together to obtain the primary input energy. When the switching tube s is off, the remaining energy in the W1 is returned to the input of the power supply through the auxiliary winding W3, the VD1 cutoff, the secondary inductance L, the diode VD2, the load forms the continuation circul

Fever fish:Recently, some netizens often asked me how to renew my earphones. In fact, I have never been reluctant to deliberately hide a pair of headphones, because if it is done well, it is just a little faster to enter the status, such as hd600, it would have taken about two hours to get into the status every day. However, if you do not have a hard time, it may shorten the service life of your earphones a

Thinking and analysis of DC transform Beginners

descending, andillike, there's a ripple.u, here we can't and just calculateilso come on, because it's not straight up. However, the total charge change can be achieved by the pressure process.q=c*2△uto calculate, we have just said that the inductor current to remove the load resistor current is charged to the capacitor, soICGreater than0the part is the charging current,ICin theTThe axis is going back and forth (becauseTstotal points in time are0or byIl-iout=icfigure), there areq=1/2*△IL*TS/2 (c

Thinking and analysis of DC transform Beginners

descending, andillike, there's a ripple.u, here we can't and just calculateilso come on, because it's not straight up. However, the total charge change can be achieved by the pressure process.q=c*2△uto calculate, we have just said that the inductor current to remove the load resistor current is charged to the capacitor, soICGreater than0the part is the charging current,ICin theTThe axis is going back and forth (becauseTstotal points in time are0or byIl-iout=icfigure), there areq=1/2*△IL*TS/2 (c

Neural network One: Introduction, example, code

The basic overview of neural networks and neural network models are not carefully introduced here. A detailed introduction to the introduction of the neural network and its model is presented in the details of Daniel Ng, Stanford University. This paper mainly introduces the concrete derivation of the reverse conduction algorithm (backpropagation algorithm), and the simple example and related Python code of the Neural network. the derivation process of

Various MOS tube Introduction

MoS Tube Learning in the actual project, we basically use the enhanced MOS tube, divided into N-channel and P-Channel two kinds. We often use nmos because of its low on-resistance and easy to manufacture. As can be seen on the MOS schematic, there is a parasitic diode between the drain electrode and the source. This is called a body diode, which is important in driving inductive loads such as motors. Incidentally, the body diode exists only in a single MOS tube, which is usually not available

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