The frequent occurrence of forest fire in nature has brought considerable losses to various countries. The design of an intel- ligent early warning system for forest fire is particularly important. The system is based on ZigBee intelligent networking system. It consists of the front-end module of the fire alarm information collection system, the system data forwarding module and the remote terminal module. Through the front-end data acquisition module, the fire alarm information of the forest scene is transmitted to the terminal module in real time. The information is processed by the terminal to form an information judgment, that is, the alarm can be displayed in the data monitoring center in real time. The information can also be sent to the patrol personnel through the mobile phone terminal to carry out real-time monitoring of the scene.

In this paper, taking the mapping of reducer as an example, the two courses of mapping and computer graphics are com- bined organically, the characteristics of each component part of reducer are analyzed in detail, and various operation commands in- volved in the drawing process of reducer parts by using the computer graphics software AutoCAD are discussed. Through the reduc- er parts drawing and assembly drawing, the students’computer drawing skills are cultivated, and the application ability of combin- ing theory with practice is enhanced.

In some areas of data acquisition, it is necessary to sample the signal at a high rate, but a single chip is difficult to meet the requirements. This design adopts three-channel ADC cross-sampling mode, combined with sampling clock phase difference design, sampling error correction, high-speed data processing measures, through the comparison of the sampled signal and the restored sig- nal, the correctness of the design is verified. The highest sampling rate of this design can reach 195MHz

In order to improve the initiative and enthusiasm of students to participate in the experiment and enhance the design abili- ty of FPGA course, three measures are taken in the experiment teaching reform, e.g. gradient setting of experiment project, all-round assessment of experiment and embedding CDIO education concept. The practical results show that the gradient setting and assess- ment are reasonable, and the attitude of the students to participate in the experimental teaching is improved significantly.

According to the actual needs of university information data integration, the design objectives and ideas of university infor- mation data integration platform are put forward. Based on Java EE & HTML5, the technical framework of university mobile infor- mation platform is built. The design can give full play to the advantages of mobile communication; realize the centralized exchange of basic information of teachers and students, data collection and management of a single business system, access and exit mecha- nism, and single sign on of business information system.

Aiming at the recently study which does not take into account the dynamic changes of the traffic capacity, the optimal path of disaster relief vehicles from disaster relief points to earthquake-striking spot is calculated based on improved ant colony algo- rithm. The improved algorithm modifies the transition probability according to the traffic capacity, adopts adaptive pheromone updat- ing strategy. The simulation results show that it can improve convergence rate and capacity of searching optimal solution. The im- proved algorithm can provide important decision-making basis for the post-earthquake rescue, which has important practical signifi- cance.

With the deepening of higher vocational education reform, more and more attention has been paid to the cultivation of so- cial ability and method ability in addition to technical ability in teaching. For the "three-dimensional ability" assessment mode gener- ated by this reform idea, more attention has been paid to the assessment of the state and performance of students in the learning pro- cess. At present, most of the domestic performance management systems are based on the functions of final performance statistics, teachers' performance and learning query. There are few records for students in the learning process. The development of informa- tion technology also makes it possible to record students' learning state in class. The "three-dimensional ability" assessment system of higher vocational colleges is the result of the development of both.

This paper firstly describes the current situation and limitations of learning evaluation and assessment in colleges and uni- versities; then, it analyzes the possibility of implementing the learning evaluation and assessment based on "dynamic learning data analysis"; then, it describes the design process of the learning evaluation and assessment system in detail; finally, it determines the various assessment items and carries out quantitative processing to better apply them to actual teaching.

In this paper, the parallel active power filter is taken as the research object. A diode-clamped three-level topology is used as the main circuit of the system. A voltage space vector pulse width modulation (SVPWM) algorithm based on a 60°coordinate sys- tem is proposed, which simplifies the operation process of the traditional three-level space vector algorithm. The reason for the po- tential fluctuation of the neutral point in the three-level topology is analyzed. In the non-orthogonal coordinate system, the DC-DC conversion technology is used to realize the balance control of the neutral point potential. The system simulation model is estab- lished in Matlab / Simulink environment. The simulation results show that the system has better harmonic suppression ability, which verifies the feasibility of the scheme.

As the information society enters the Internet of things era, all devices need to develop applications and drivers for comput- er systems to identify and use. This paper introduces the process of developing the underlying device driver under the Ubuntu 16.04 system kernel. Based on the Ubuntu system kernel, source tree construction, the driver module compiling, loading and unloading are completed. It analyzes the design method of character device driver in Ubuntu system. Finally, the character device driver designing is successful verified through Ubuntu system.

This paper analyzes the characteristics of the project-based curriculum and the teaching of higher vocational education. Taking the project-based curriculum as the breakthrough point, and starting from the professional characteristics, this paper investi- gates the principles of the project-based curriculum teaching design of C Language Programming, puts forward the teaching strate- gies of constructing the integrated teaching environment and multi-directional teaching environment, and explores the whole process assessment system of teaching, learning, doing, examination with integrated knowledge, ability and accomplishment.

With the continuous improvement of LTE network scale and functions, users' dependence on mobile phones has continued to increase, resulting in a sharp increase in mobile data traffic. The buildings in each scene are the places where people spend the lon- gest time and have the greatest chance of using mobile phones. Therefore, it is urgent to improve the deep coverage of high-value buildings and enhance user perception. Based on the evaluation of the building value, the article puts forward the planning and con- struction plan for improving the network quality of the building in each scenario, which can provide reference for engineering design and construction project management personnel.

The construction of cybersecurity is an important part of the information construction in university. It is an indispensable condition to help the information construction and a strong guarantee to serve the information support of teachers and students in uni- versity. The cybersecurity environment, atmosphere and guarantee ability of university need to be improved. Based on the related work and achievements of cybersecurity construction, some general schemes are put forward to provide reference for cybersecurity construction in university.

Traditional network mainly adopts MSTP + VRRP technology, realizing redundant backup of route and ensuring the reli- ability of network. But it was very inconvenient for equipment management and maintenance and causing a waste of resources. In view of the shortcomings of traditional schemes, this paper takes Nanfang College of Sun-Yat-Sen University campus network as ex- ample, realizes high reliability campus network by adopting network virtualization technology and flat management. At last, the ex- periment shows that the network virtualization technology is more reliable in the network and achieves the expected goal.

With the continuous development of computer and network technology, the network planning, construction and manage- ment of computer basic laboratories have gradually received attention. Among them, network planning and management effectively avoids the complicated operation process of the traditional stand-alone mode. The use of network software and systems can also opti- mize the structure of basic laboratory. This article takes Novell as an example to comprehensively explore the network planning and management methods and paths of the computer basic laboratory, and optimize the network planning and security by analyzing the network hardware environment and topology structure, to improve the safety and reliability of the laboratory environment.

In order to solve the problems of single evaluation and low prediction accuracy in the current ecological environment service value system, this paper puts forward three dynamic combination forecasting systems for ecosystem service value, namely ARI- MA-BP, PCABP-ARIMA and PCABP ARIMA prediction model, and makes an empirical analysis on the ecosystem service value prediction of grassland in Tibet Autonomous region, forest land in Heilongjiang Province and cultivated land in Henan Province. The experimental results show that the average absolute error of based on ARIMA-BP ecosystem service value prediction model is only 0.87%, and the average absolute error of PCABP-ARIMA and PCABP+ARIMA prediction model is 1.98% and 2.24% respec- tively.ARIMA-BP is the best, which is 62.67% smaller than the traditional BP neural network prediction model

Local colleges generally have inadequate lab management personnel, while students involved in the computer lab management is a simple and rapid shortcut to solve such a problem at present. In this paper, by combining with the actual situation of Liupanshui Normal College, the author studies on the management mode of students’participation in the computer lab in local colleges, providing the feasible references for local colleges with similar situation.

Traditionally, recording teaching resources through a small number of high-quality recording and broadcasting classrooms cannot meet the needs of school development and students' learning. For the construction of teaching resources in our school, we need to consider comprehensively. We need to use information technology to build a visual teaching management system which inte- grates the functions of unified supervision of equipment, sharing of educational resources, online teaching and research evaluation, and visual educational administration management. It can realize the unified management and supervision of the relevant equipment of the information system in various teaching sites, teaching inspection, teaching supervision, on-line patrol, micro-evaluation and other teaching and research business system functions.