In traditional teaching, due to differences in teachers, the knowledge connections between different courses are often over‐ looked, resulting in excessive repetition or failure to integrate new and old knowledge points. To make the knowledge points more smoothly connected in teaching, we help students to establish a knowledge connection system. Firstly, we organize a teaching salon where teachers fill out a teaching knowledge connection table to find fusion points between courses. Secondly, we use holographic projection technology to build a holographic projection pyramid. Finally, we use holographic projection during the teaching to help students recall previously learned knowledge and better integrate it with new knowledge, and understand new information. To sum up, holographic projection technology visualizes models in courses, deepens students' impressions, increases visual stimulation dur‐ ing learning, and enhances students' interest in learning. This innovative form of teaching tool and teaching method helps to deepen students' understanding and absorption of knowledge.

In order to design a smart home control system that is easy for users to use, this system takes STM32F103 microcontroller as the control center and combines hc-05 Bluetooth module, non-ad hoc voice recognition module and GSM module to form a set of multi-functional control system.The system usesMQ-2 smoke sensor, HC-SR501 human induction module, DHT11 temperature and humidity sensor and relay to detect and process the indoor environment, and then displays the indoor environment status through TFT display screen.The system can control indoor lighting, curtains and fans through mobile phones with Bluetooth function and user voice.In an emergency, alert the user by sending an alarm text message within 10 seconds using the GSM network. The system has the advantages of good performance, simple operation, low cost and so on.

The home control system has shown some features of intelligence，networking and remote-oriented as the rapid development of electronic technology and network technology．This paper analyzes and discusses the control system of intelligent home in details．And the composition and design scheme of intelligent home control system are also pointed out from the hardware design，software design and design of remote-oriented control platform．All this work is significant for enhancing the actual application level and research level of intelligent home control system further more．

Cloud computing technology is a new technology and a new revolution of information technology. This paper analyzes the mobile learning status and existing problems, designs the mobile learning system based on cloud computing technology, and builds the cloud structure. The application of cloud technology in mobile learning system can effectively solve the existing problems, and provide a new inspiration for mobile learning.

To fully implement the student-centered teaching philosophy, the survey questionnaire is designed with binary branching logic, dividing the subjects into two groups: those familiar with AIGC (Artificial Intelligence Generated Content) products and those unfamiliar. Starting from the usage needs of on-campus university students towards AIGC products, a questionnaire survey is con‐ ducted among 1,250 undergraduates from diverse backgrounds to gain an in-depth understanding of students' intentions and specific scenarios of using AIGC products. Based on the perspective of university students, the survey results elucidates the potential positive impacts of integrating AIGC products into the educational structure, including promoting personalized learning and improving the accessibility of educational resources. At the same time, potential integrity risks are analyzed, such as an increase in academic mis‐ conduct and potential threats to intellectual property rights. In response to issues revealed by the survey, strategies are proposed to strengthen digital literacy education, construct multimodal intelligent learning environments, and enrich the educational process. These strategies aim not only to maximize the positive effects of AIGC products in education but also to effectively prevent and miti‐ gate potential negative impacts.

Recognizing emotions through facial expressions has been widely applied in normal life. Among deep learning algo‐ rithms, Convolutional Neural Networks (CNN) have achieved great success in the field of facial expression recognition. However, it still faces the problem of information redundancy and data deviation, which affects the performance of facial expression recognition algorithm. Therefore, a Multi-scale Image Convolutional Network (GCN) based on landmarks extracted from facial images is pro‐ posed. The proposed method is simulated on CK+, JAFFE, FER2013 and RAF-DB datasets. The results show that the proposed method is superior to AUDN, BDBN, SCNN and other traditional deep learning frameworks, and has higher accuracy on different data sets.

The article introduces the design principle for tuning voltage circuit of TV， and some basic circuit． Expound the characteristic of the circuit． Illuminate the application of the self-oscillation circuit and the PWM- oscillation circuit in the design．

Grid computing is becoming more and more popular nowadays， but it does not mean that it is becoming easy to use，deploy and program．OGSA-DAI is a middleware capable of exposing and managing databases on the grid． In this work we present an extension to the OGSA-DAI grid middleware，this extension is an implementation of the Sun JDBC interface，used to access databases within the java language．This implementation uses the OGSA-DAI client API．With this work we aim to provide an easy and well known way to enable new and existing developers，and applications to use databases exposed in the grid using the OGSA-DAI middleware．

With the development of the network technology and intelligent buildings，the works on the PDS (Premises Distribution System)has a fairly high demand．PDS is the basis and nerves of the information system，and also the part of entire network system．This paper studies the PDS from the perspective of standards and designs．

Safety is the key factor of the online payment based on the internet E-commerce which is established on open platform．This essay emphasizes on two protocols safeguarding the security of online payment：SSL and SET，raising their limitations in practice respectively and proposing a model to merge the two protocols in E-commerce．

This paper introduces the application visualization theme surveillance technology application of EMS system. The application of 2d and 3d visualization technology for data display used in EMS is discussed, including bar chat, pie chart, flow line, contours, cylindrical/cone, space connecting line, etc. Based on this, the concept of visualization theme is proposed. And the realization examples of some theme such as voltage, tide, equipment load rate, N-1 analysis results are given. The practical application show that the visualization theme is surveillance and helpful for dispatch personnel to find and solve problems.

This article aims to improve the accuracy and speed of text classification. T * f algorithm is used to initially weigh the feature item, then stop words is used to shield specially meaningless words. Original probability distribution method and weighted L - E operator enable the features in the special positions or widely distributed to weight in exponential form, so that the better results converge faster. In this paper, by using the genetic algorithm, crossover operator and mutation operator, and adopting appropriate objective function, the retrieval process speeds up, and has a greater probability to get the optimal result. Hybrid algorithm is proposed, which can eliminate the synonyms and the characteristics of interference.

Qinglong Depot of Nanjing Metro Line 4 uses NRIET-CI-Ⅲcomputer interlocking system, of which interlock host adopts two out of three structure. This article describes the structure of the interlock host and the design of system interconnection architecture, interior communication, synchronization principle, safety work methods, etc. to meet the functional requirements, performance requirements, environmental requirements and RAMS requirements of the interlocking host system.

At present, smart phones, tablet PCs and other smart mobile terminals have penetrated into every corner of people's daily lives. In the field of education, MOOCs has become a hot research topic, which has attracted wide attention of scientific research scholars in the whole country. In this paper, the " MOOCs embedded" for talent cultivation model is analyzed and researched, combining with the connotation of talents cultivation model. And the corresponding countermeasures are put forward to solve the difficulty of the implementation of personnel training mode.

Video is divided into pre-filming and post-production. Post-production plays a decisive role in video effects. This paper mainly introduces the main techniques and experience of video editing. The method is to search the data and classify the material. The research shows that the audience can understand the theme of the video through video editing.

In today's electronic design process, the research on signal integrity has become an important part that should not be ignored. At the early of the circuit design process, the circuit design simulation software should be used, considering the problems and resolving them to shorten the product development cycle. This paper presents the simulation waveforms in Altium Designer. Results show that different solutions lead to different signal performance. So we should adopt the best solution according to the actual conditions of the circuit design program.

With the continuous development of information technology, companies reduce the consumption of manpower and materials with the meeting room management system, adding conference room services, improving the service level of the conference room, and reducing the management problems. The system is based on JSP and Servlet provided by J2EE platform, using MySQL database. The system is simple, easy to be operated. It has simple interface and complete functions, which will play a role in the information management of company.

This paper briefly introduces the demand of distribution communication network, studies and analyzes the system architecture, advantages and disadvantages and development trend of PON. It applies EPON technology in the distribution network to promote its development.

The teaching material management platform is created using the technology of ASP.NET (C# language) and SQL Server database, including the management of lesson plans, curriculum standards, and other teaching materials, so as to promote the orderly development of college teaching and improve the teaching quality.

To advocates and invest in the school teaching reform and professional international engineering certification, Heilongjiang vocational college has established a modern information technology professional group including five specialties of software technology, computer network technology, Internet of Things Application Technology, mobile communication technology and animation production technology to train high-quality technical and skilled personnel for the new generation information technology industry. Within the professional group, the Sydney agreement certification for computer network technology specialty is taken as the guide, the specialty construction is gradually standardized, new talent training modes are continuously explored, and the "three-circle" talent training improvement mechanism is continuously improved through "demand-oriented, goal-oriented, consistent and integrated, and results-driven". This article introduces the continuous improvement mechanism of modern information technology professional groups based on "three circles" and its practice in professional groups.

This paper designs an intelligent temperature measurement system based on AT89C52 single chip computer. The temperature is detected by digital temperature sensor DS18B20. DS18B20 collects and converts the temperature signal into data signal. Then the signal is analyzed and processed by single chip computer, and showed by LCD1602. Experimental result shows that the system can measure temperature with higher precision than traditional methods of temperature collection. Its detection accuracy can reach 0.1 . In addition, the system has advantages of adjusting overheat and prompting temperature upper and lower limits.