Nonlinear structure analysis of handwritten data is important for handwritten data recognition and signature authentication.

However, handwritten data usually has high dimension and dimension reduction processing is required. In this paper, an improved

ISOMAP algorithm is proposed, improving the efficiency of ISOMAP algorithm. It is applied to the nonlinear structure analysis of

handwritten data. The experimental results show that the proposed algorithm has high efficiency and accuracy, and the handwritten data has latent intrinsic dimension and nonlinear structure.

The construction of specialty group is an important part of the "double high plan" and the action plan for improving quality and excellence in higher vocational colleges. Innovation and entrepreneurship education is an important way to improve the quality of talent training in higher vocational colleges. Under the background of the construction of specialty group, how to integrate resources and improve the effectiveness of innovation and entrepreneurship talent training needs continuous thinking and practice.

This paper combs and studies the mass entrepreneurship and innovation work from the aspects of concept, integration of specialty

and innovation, condition guarantee and industry university research competition, and forms the mass entrepreneurship and innovation talent training idea based on professional groups, which has a certain reference significance for improving the effectiveness of mass entrepreneurship and innovation talent training in higher vocational colleges.

Enterprise informatization performance is the comprehensive embodiment of informatization business value. As a system atic project, the performance evaluation of enterprise informatization has the characteristics of continuity, complexity and integrity.It is of great significance to improve the implementation effect of enterprise informatization, enhance the management level of enter prise informatization, give full play to the role of information technology, and enhance the core competitiveness of enterprises. As an information technology infrastructure library, ITIL enables enterprises to find the best way and method to standardize the operation and maintenance process, which is known as the bible of IT service management. This paper explores the construction of enterprise informatization performance evaluation system based on ITIL, proposes the design ideas of the system, and puts forward opinions and suggestions for the improvement and perfection of enterprise informatization performance evaluation work in actual manage ment.

The "New Engineering" puts forward new requirements for the cultivation of talents in our country's engineering education system. The goal is to cultivate the core competence of the new engineering discipline, and to combine ideological and political issues and professional education to achieve the goal of walking in the same direction and educating people together. Take the course of Digital Logic Circuits for example, this article first introduces research ideas from two aspects of teaching goals and teaching design, then introduces specific ideological and political cases of the course, and finally introduces the reform of teaching mode. New engineering and ideological and political issues are the new trends in current college students’ability training and moral education.The article provides research ideas and methods to provide theoretical and practical basis for the transformation of traditional engineering majors and the establishment of first-class courses in colleges and universities.

The learning behaviours of users in the online open course affects the final course academic performance. By analysing parts of the data indicators in the course, this paper analyses the user learning behaviours, and finally gives the strategy and rationalization suggestions. It is important in the construction of online open courses, as well as in the subsequent course optimization.

In order to improve the shortage of information technology application in vocational education assessment, a special sys

tem design for skill assessment of key posts of urban rail transit operation based on mobile APP is proposed. By analyzing the functional requirements, this paper designs the minimum configuration standard of the hardware operation platform of the post skill assessment system, decomposes the system functions, and designs six functional modules such as system management module and human-computer interaction interfaces such as home page flash page. Through the system test, it shows that the designed post skill assessment system meets the actual needs of subway driver order classes in terms of function, performance and adaptability. It has the characteristics of convenience and quickness.

Advanced Language Programming courses are generally offered in computer related majors of higher vocational colleges.In these courses, some key knowledge, such as variables, functions, three program structures and the characteristics of object-oriented programming, is difficult for some students who have not been exposed to programming. As a graphical programming tool, Scratch can make students better understand the knowledge of programming due to its simplicity and ease of use. Combined with the application of scratch programming in programming course, this paper deeply explains how to realize the concept of related programs through some programming cases. Practice has proved that after mastering scratch programming, students' difficulty in learning Advanced Programming Language has been significantly reduced, their grades have been significantly improved, and the teaching effect has been better.

Natural interaction and multi-sensory experience make virtual reality animation enter an unprecedented stage of art perception. Its interactive methods and strategies, and the sensory experience of interactive feedback need to be theoretically sorted out and found new laws. This paper mainly analyzes the application of "interaction perception" mode principle, natural interaction mode and interactive feedback in virtual reality animation, demonstrates that natural interaction mode and multi-sensory experience provide a new creation form for animation creation, and makes thinking on the interaction form and experience form of virtual reality animation in the future.

The dual prevention work mechanism has been promoted and implemented in all walks of life, and the informatization system has also landed. However, the establishment of a dual prevention system targeted at college laboratories is not yet perfect. The laboratory is a very high-risk area for the school. Therefore, it is necessary to design a dual prevention information system for the

university laboratory in combination with the characteristics of the laboratory. Based on the construction method of double prevention mechanism, combined with laboratory information management system and laboratory safety management requirements, this article builds a set of double prevention information system suitable for college laboratories.

With the rise of the production-study-research work in China, it is the general trend for university libraries as the information resource center to participate in the collaborative innovation of production-study-research. This situation puts forward new requirements for the subject information service mode of university libraries. How to carry out the subject information service of university libraries under the background of production-study-research collaborative innovation is a problem that almost university libraries need to think deeply about.

In the context of rural revitalization, the development of rural education and teachers has attracted much attention. It is a tendency for rural teachers to improve their informational ability to fit for the rural education reform. By improving the informational ability, rural teachers can have more ways for self-studying and broaden their knowledge, so as to provide better teaching services for the rural students. This paper aims to explore the useful strategies for improving informational ability of rural teachers from teachers and management prospects after analyzing the subjective and objective difficulties which rural teachers faced. For rural teachers, they should have a more active attitude toward the improving informational ability which is a necessity for a qualified teacher. For the management departments, they should guarantee the basic infrastructures and related systems. Besides, they should provide more chances of training and contests for rural teachers, which will speed up the rural teachers’overall development of informational ability.

The construction of 5G customized private network is the key to the development of 5G network and 5G business growth.The deployment and application of 5G customized private network can provide reliable network, data security, cloud collaboration

and other services in various parks (factories, office parks, ports, campuses and hospitals)，which meets the needs of customized network service of smart factory, smart park, smart transportation and smart campus. This paper analyzes the deployment requirements and deployment modes of 5G customized private network in different industries, hoping to provide reference for the application of 5G customized private network.

This paper uses Python third-party library Requests to crawl the housing data of second-hand housing websites, uses Pandas library to structurally process the crawled data, and uses Pyechards library to conduct multi-dimensional in-depth analysis and visual presentation of second-hand housing data. From a large number of online data, this paper analyzes the distribution of secondhand houses, market hot spots and price trend in Nanjing, helps buyers and real estate agents to make efficient decisions in market activities, and provides reference for government intervention and supervision of the second-hand housing market.

In recent years, criminals often use smart phones to commit crimes. In order to effectively combat such crimes, mobile phone forensics has become an essential technology. Through mobile phone forensics, public security organization extracts data from mobile phones, analyzes the data and obtains evidence. Extracting mobile phone data is an important part of mobile phone forensics. This paper makes a brief analysis of mobile phone forensics, and takes Android mobile phone as an example to discuss the data storage architecture and extraction method

The attendance management and analysis system based on face recognition technology uses the integrated distribution point of non-sensing multi-cameras, combines with the interactive intelligent electronic display screen and the programmable electromagnetic lock to realize the intelligent interaction, display, real-time statistics and analysis of classroom attendance. This paper explains the development and research of the system from the aspects of system requirements, system working principle and process, system design and code development.

algorithm based on supervised learning has achieved great success in related tasks. However, compared with coarse-grained label data sets, the classification of fine-grained label data sets is still a difficult point. Geographic images are widely used in all aspects of society. Researchers often need to classify large-scale geographic image data. However, due to the small feature difference of geographic images, automatic classification is relatively difficult. In this paper, the fine-grained features of geographic images are labeled, and trained and learned through the deep convolution network, which greatly improves the classification accuracy of geographic images.

The increasingly fierce market competition and the increasing demand for customer service quality put forward higher requirements for the ability and reliability of the support system. Guangdong Unicom provides an emergency operation platform by

building an emergency startup system to ensure that it can provide uninterrupted service and customer service satisfaction in case of major failure of the support system. As an important basic branch of CBSS emergency system, emergency startup system plays a vital role. This paper introduces the construction, design ideas and implementation methods of emergency startup system.

As some computer equipment in Colleges and universities are close to the time limit of retirement period, the problems of poor operation performance, high failure rate and high management cost are gradually emerging. Based on this, from the perspective

of network diskless server system construction, this paper uses Ruiqi diskless system and UDP protocol to set multiple virtual hard

disks in the server to synchronize and store computer system files and hard disk files, which can effectively improve the operation

speed of network services.

This paper analyzes the problems of curriculum ideological and political construction for computer professional in judicial police vocational colleges. Starting from the cognition of teachers and students and based on the present problems, curriculum system is explored which is suitable for the industry and professional characteristics.