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This paper aims to investigate a novel impact time control guidance (ITCG) law based on the sliding mode control (SMC) for a nonmaneuvering target using the predicted interception point (PIP).

To intercept the target with the minimal miss distance and desired impact time, an estimation of time-to-go is introduced. This estimation results in a precise impact time for multimissiles salvo attack the target at the same time. Even for a large lead angle, the desired impact time is achieved by using the sliding mode and Lyapunov stability theory. The singularity issue of the proposed impact time guidance laws is also analyzed to achieve an arbitrary lead angle with the desired impact time.

Numerical scenarios with desired impact time are presented to illustrate the performance of the proposed ITCG law. Comparison with the state-of-art impact time guidance laws proves that the guidance law in this paper can enable the missile to intercept the target with minimal miss distance and final impact time error. This method enables multiple missiles to attack the target simultaneously with different distances and arbitrary lead angles.

An ITCG law based on sliding mode and Lyapunov stability theory is proposed, and the switching surface is designed based on a novel estimation time-to-go for the missile to intercept the target with minimal miss distance. To intercept the target with initial arbitrary lead angles and desired impact time, the authors analysis the singular issue in SMC to ensure that the missile can intercept the target with arbitrary lead angle. The proposed approach for a nonmaneuvering target using the PIP has simple forms, and therefore, they have the superiority of being implemented easily.

In 2019, the goal of developing a world-class open university through different stages was put forward by the Open University of China (OUC), which indicated that internationalization for Chinese open universities came to the agenda. However, international activities of open universities are different from those in conventional universities, and how to fulfill the goal of internationalization is a main issue faced by educators in Chinese open and distance education arena. This research aimed to identify ways of internationalization for the OUC system.

A survey was employed as a tool to get feedback from target audience. A questionnaire was released to academics, management staff and researchers to the 44 provincial open universities. A total of 501 samples were collected. Among them, 332 were from academics, which accounted for 66.27%, 152 were from school-level directors and 17 were from university-level leaders.

By analyzing the data collected in the survey, the study proposes four recommendations to fulfill the goal of internationalization for Chinese open universities and these include strengthening top-level strategies, building up professional teams, sharing learning resources and delivering upper-level programs.

The targets of this research were all staff at different levels in the central and local institutions; no students were included in the research. Therefore, this did not reflect a picture from the student perspective, and this will be improved in future research.

Since the establishment of the OUC in 1979, there has been no clear and systematic pathways for the development of internationalization of Chinese open universities. This research proposes a theoretical framework of internationalization for open universities and suggests a direction for future development.

The purpose of this report is to demonstrate open and distance education (ODE) can support poverty alleviation. Taking the practices of the Open University of China (the OUC) as an example, this paper aims to reveal how open universities make contributions to local residents in rural and remote areas.

Focusing on 25 poverty-stricken counties, the OUC had invested 58 million RMB to its learning centers in these counties from 2017 to 2020. The first one is to improve ICT and educational facilities in these learning centers. The second approach is to cultivate local residents with degree programs through ODE so as to promote local economic development. The third one is to design and develop training programs according to local context to meet the specific needs of local villagers.

After 3 years working, cloud-based classrooms and computer rooms have been set up. Bookstores have been founded and printed books have been donated. Hundreds of thousands of digital micro lectures have been supplied to these learning centers which have been improved and fully played their functions. Nearly 50,000 local residents have been directly benefited. Village leaders have helped lift local residents out of poverty. Poverty-stricken villagers have been financed to study on either undergraduate or diploma programs. Local residents have improved their skills by learning with the training programs offered by the OUC.

ODE is proved to be an effective way to eradicate poverty. Open universities are proved to be able to make contributions to social justice. By fulfilling its commitments to eliminate poverty within the national strategy framework, the OUC has built its brand nationwide.