The Threshold Characteristics of the Poverty Reduction Effect of Educational Financial Expenditure-Analysis of Panel Data in Chongqing, China from 2009 to 2018

Hu, Zhenzhen; Duan, Yuanpeng

doi:10.1109/icaa53760.2021.00022

Cited by 2 publications

(2 citation statements)

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“…This can ensure that the turbulence generated inside the tank is approximately uniform in a selected range [37]. However, the flow turbulence is small (k < 0.0055 m 2 /s 2 , τ < 0.7 N/m 2 ), which is far from the FTCs in a natural river [38][39][40][41][42][43][44]. Therefore, in this experiment, a space of 5 cm above the free surface of the water body in the vibrating-grid water tank was reserved for the free oscillation of the water flow, increasing the turbulence intensity inside the tank and better simulating the turbulence characteristics of the water flow in a natural river (Figure 2).…”

Section: Calibration Of the Tank Flow Turbulencementioning

confidence: 99%

Effects of Flow Turbulence on the Entire Development Process of Drifting Fish Eggs

Wei,

Ma,

Deng

et al. 2024

Fishes

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Excessive flow turbulence poses a threat to the development of drifting fish eggs, leading to mortality or developmental malformations and ultimately depleting early fish resources. Currently, there is a scarcity of quantitative studies investigating the effects of flow turbulence on the entire process of drifting fish egg development, from fertilized egg division to hatching. In this paper, the effects of different flow turbulence conditions (FTCs), including turbulent kinetic energy and shear stress, and action times on different stages of fish egg development were quantitatively explored using a transverse-oscillating-grids turbulence tank. Empirical formulas were established to predict the proportion of normal fish egg development under different FTCs within a selected range. The research findings provide a quantitative basis for protecting early fish resources, mitigating the biological invasion of specific fish, constructing fish-breeding facilities, and ensuring safe transfer and transportation.

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Section: Calibration Of the Tank Flow Turbulencementioning

confidence: 99%

Effects of Flow Turbulence on the Entire Development Process of Drifting Fish Eggs

Wei,

Ma,

Deng

et al. 2024

Fishes

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show abstract

“…Shannon [25] introduced the concept of entropy into information theory to represent the average amount of multiple information sources sent by a certain signal source. Information entropy is a measure of uncertainty of discrete random variables.…”

Section: The Shannon Diversity Indexmentioning

confidence: 99%

Numerical Simulation of the Hydraulic Characteristics and Fish Habitat of a Natural Continuous Meandering River

Wang

et al. 2022

Sustainability

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Increasing international attention is being focused on the construction of ecological waterways. Ecological waterways are not only able to successfully sustain the navigational functions for ships, but also provide a stable long-term environment in which fish can survive. In nature, meandering rivers are the most common form. Compared with straight rivers, their flow conditions are complex and not conducive to ship navigation and fish survival. There has been less research conducted on the construction of ecological waterways in naturally curving rivers. Therefore, in this paper, a naturally continuous curved river was used as a research object, and numerical simulation was employed to study the hydraulic characteristics of the river and the survival environment by fish by introducing the Shannon diversity index. It was concluded that a naturally continuous curved river cannot meet the navigational requirements and does not provide a stable survival environment for fish. After proposing a targeted channel restoration plan, the hydraulic characteristics of the flow were significantly improved, and the flow velocity Shannon diversity index was reduced. The restored channel met the navigational requirements of vessels, and provided a more stable environment for fish. In the construction of the continuous bend river ecological corridor, the location of the continuous bend stream connection was used as a key restoration area. This paper provides ideas and basic research for the sustainable development of ecological river channels and the construction of continuous curved river channels.

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The Threshold Characteristics of the Poverty Reduction Effect of Educational Financial Expenditure-Analysis of Panel Data in Chongqing, China from 2009 to 2018

Cited by 2 publications

References 1 publication

Effects of Flow Turbulence on the Entire Development Process of Drifting Fish Eggs

Effects of Flow Turbulence on the Entire Development Process of Drifting Fish Eggs

Numerical Simulation of the Hydraulic Characteristics and Fish Habitat of a Natural Continuous Meandering River

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