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The proposed method is beneficial to expand the perceived visual field of prosthesis recipients and improve their object detection and recognition performance. It suggests that our method may provide an effective option for image processing module in future high-density retinal implants.

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Purpose Seepage of the dam is an important safety problem, which may cause internal erosion of the structure. In the field of seepage monitoring in civil engineering, the distributed optical fiber sensing technology based on the temperature tracing method has been paid more attention due to its unique advantages of high sensitivity, good stability and high resolution. The purpose of this paper is to make a review of the existing related research, so as to facilitate the later scholars to understand and further study more systematically. Design/methodology/approach In this paper, three kinds of commonly used distributed fiber temperature measurement technologies are introduced. Based on the working principle, monitoring system, theoretical analysis, experimental research and engineering application of the fiber seepage monitoring technology, the present situation of dam seepage monitoring based on distributed fiber is reviewed in detail and their advantages and disadvantages are compared. Findings The thermal monitoring technology of seepage measurement depends on the accuracy of optical fiber temperature measurement (including the accuracy of the system and the rationality of the discrimination method), the correct installation of optical fiber and the quantitative analysis of temperature data. The accuracy of the current monitoring system can basically meet the existing measurement requirements, but the correct installation of optical fiber and the calibration of temperature data need to be further studied for different discrimination methods, and this field has great research value. Originality/value At present, there are many applications and research studies of optical fiber sensing in the field of structural health monitoring, and there are also reviews of related aspects. However, there is little or no review only in the field of seepage monitoring. This paper summarizes the research and application of optical fiber sensing in the field of seepage monitoring. The possibility of the gradient method to find its new prospect with the development of monitoring systems and the improvement of temperature resolution is discussed. The idea of extending the seepage monitoring method based on distributed optical fiber thermal monitoring technology to other monitoring fields is also given in the paper.

Improving the understanding of rural female labor employment transfer and its impact on family welfare is of great significance to the improvement of rural family welfare and the rational transfer of labor forces. However, there are few studies on the effect of rural female transfer and there is a lack of comprehensive quantitative measurement and mechanism analysis of influences of female employment transfer on themselves and their families. Based on the peasant household survey in the mountainous rural areas of Sichuan Province, China, in 2013, 2016, and 2019, results were organized as panel data and divided the employment features into three aspects: employment industry, employment locations and whether the migrant was working or not. The family welfare effects (impact on children and impact on the elderly) of rural female labor transfer for employment were investigated by using the fixed effect and random effect regression models. Some major conclusions could be drawn: (1) age, education degree, employment industry and locations of rural females all had a significant impact on their children’s education degree; (2) age, urbanization rate and industry of rural females had a significant impact on their number of children; (3) age, education degree of females, employment location and urbanization rate had a significant positive influence on the number of elderly in the family: only the age of rural females had a significant negative influence on the health condition of the elderly. This study can enhance our understanding of the relationship between rural women’s employment and family welfare effects, the results can provide a reference for rural women’s rational employment mobility and maximizing of family welfare.