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Copyright of Chinese Journal of Clinical Healthcare is the property of Chinese Journal of Clinical Healthcare and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

The basic sine cosine algorithm (SCA) has some shortcomings such as low accuracy, slow convergence and easy to fall into local optima when using it solve high-dimensional complex optimization problems. An improved SCA (iSCA) was proposed. Firstly, a nonlinear conversion parameter rule based on inverted sigmoid function was designed to replace the original linear strategy, and a good transition from global search to local search was achieved. Secondly, the personal historical best information was embedded into the position search equation to guide the optimization process. The solution precision was further improved and convergence was accelerated. Finally, a somersault foraging mechanism was introduced to generate a new position to increase the population diversity, thereby reducing the probability of falling into local optima. 10 high-dimensional benchmark test functions,10 high-dimensional UCI datasets and two wind turbine fault datasets were selected for experiments, and the results of iSCA were compared with the basic SCA, memory-guided SCA(MSCA), and improved grey wolf optimizer(I-GWO) algorithms. The results show that iSCA has better performance than other methods in terms of solution precision and convergence speed. The proposed algorithm is effective for solving the high-dimensional optimization problems. [ABSTRACT FROM AUTHOR]

Copyright of Application Research of Computers / Jisuanji Yingyong Yanjiu is the property of Application Research of Computers Edition and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Application Research of Computers / Jisuanji Yingyong Yanjiu is the property of Application Research of Computers Edition and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

For managing basin water pollution, it is important to explore the role of the river chief system in dealing with the free-rider problem due to transboundary pollution. Based on the water pollution data of the state-controlled monitoring points and the evolution data of the river chief system from 2004-2019, this study comprehensively evaluated the pollution management effects of upstream governments in implementing the river chief system by constructing upstream and downstream water quality models. The results showed that: ① The implementation of this system by upstream governments could effectively improve downstream water quality; however, the incentive effect was only from the upstream areas within the province. ② In provinces where provincial river chiefs were appointed, the positive effect of the system was more pronounced in upstream areas than that in downstream areas, which might be due to the benign environmental management interactions brought about by provincial river chiefs. ③ In contrast, the implementation of the river chief system in upstream provinces exacerbated water pollution in downstream areas. In summary, although the system could improve local environmental governance by strengthening the performance assessment of local officials, it did not reverse the nature of free-rider problems due to transboundary pollution. Therefore, the river chief system, which implements management responsibilities based on administrative boundaries, was not able to fundamentally achieve an overall improvement in water environmental quality. Accordingly, the study recommends that when we adhere to environmental decentralization, water quality downstream, especially in cross-provincial downstream areas, should be included in the performance assessment. Also, the chief river system should be established at the overall level of the basin to strengthen inter-provincial collaboration within the basin. Only in this way can we solve the free-rider problems in pollution management, improve the efficiency of environmental management, protect basin ecology, and achieve high-quality development. [ABSTRACT FROM AUTHOR]

To meet the needs of education informatization, to promote reformation of nursing experimental teaching, and to improve quality of nursing education, a V • Care-virtual nursing experiment platform was designed and developed by using Unity 31) virtual reality technique and based on core competency to train nursing skill and clinical thought. The virtual experiment platform included three modules: active learning, virtual experiment and self-assessing. The virtual environment was constructed based on real clinical situation, and the real clinical cases were used to design teaching cases. The virtual platform integrated with laboratory training and nursing internship, a new nursing teaching model was formed. The V • Care-virtual nursing experiment platform ensured the safety of students and patients, decreased the cost of nursing experiment. The construction of V • Care-virtual nursing experimental software platform was helpful to explore the combination of information technology with nursing experimental teaching, to promote reformation of nursing experimental teaching, to improve quality of nursing education. [ABSTRACT FROM AUTHOR]