探索移动定位数据和废水流动之间的关系:来自瑞士五个水域的证据
Nicolas Neuenhofer1, Andy Disch1, Stephan Baumgartner1,2
1Department of Urban Water Management, Eawag, Swiss Federal Institute of Aquatic Science and Technology, 8600 Dübendorf, Switzerland.
概括
移动定位数据为监测城市废水生产提供了一种新的方法,但目前与废水流量的相关性很低,并因收获区而异. 为了有效实施,需要先进的模型和隐私考虑.
科学领域:
- 环境科学 环境科学
- 城市水文学 城市水文学
- 数据科学数据科学数据科学
背景情况:
- 城市排水系统对人类和环境健康构成风险.
- 传统的水质监测是昂贵的,缺乏全面的数据.
- 数字化提供了新的数据来源,如废水分析的移动定位数据.
研究的目的:
- 调查移动定位数据与废水流量之间的关系.
- 评估使用移动定位数据用于城市排水管理的可行性.
- 为了确定这个新的方法的挑战和潜在的改进.
主要方法:
- 利用来自瑞士主要电信供应商的移动定位数据.
- 分析了来自瑞士五个不同规模的不同流域的数据.
- 使用简单的多重线性回归模型进行初始分析.
主要成果:
- 观察到移动定位数据和废水产量之间的低至中等相关性 (R2 0-0.73),根据采集区有很大的差异.
- 确定了非线性效应,表明需要先进的预测模型.
- 突出了数据隐私方面的担忧,特别是在较小的采集区.
结论:
- 移动定位数据显示了废水动态评估的潜力,但需要进一步开发.
- 为了可靠的预测,需要先进的建模,包括流量距离和行程时间.
- 域特定的预处理和隐私保护技术对于实际应用至关重要.
相关概念视频
Eulerian and Lagrangian Flow Descriptions
1.9K
Fluid flow analysis is critical in many scientific and engineering disciplines, and two principal approaches are used to describe this flow: the Eulerian and Lagrangian methods. These methods offer different perspectives on monitoring and analyzing the motion of fluids, each with distinct advantages depending on the scenario.
The Eulerian method focuses on fixed points in space where fluid properties, such as velocity, pressure, and temperature, are observed as the fluid moves between these...
The Eulerian method focuses on fixed points in space where fluid properties, such as velocity, pressure, and temperature, are observed as the fluid moves between these...
1.9K
Plane Potential Flows
883
Plane potential flows simplify fluid motion by assuming the fluid to be irrotational and incompressible. These characteristics allow these flows to be described by a velocity potential function, ϕ, representing the flow speed in a given direction, and a stream function, ψ, that visualizes the flow path, both governed by Laplace's equation. These parameters help in estimating flow patterns, velocity distributions, and pressure fields around various hydraulic structures.
Uniform...
Uniform...
883
Bernoulli's Equation: Problem Solving
1.8K
A Venturi meter is essential for measuring fluid flow rates in pipelines. It utilizes the relationship between fluid velocity and pressure described by Bernoulli's equation. When installed in a sewage system, the Venturi meter accurately determines the wastewater flow rate by measuring pressure differences.
The first step is to compute the cross-sectional areas of the pipe and the Venturi throat to analyze the pressure difference indicated by the pressure gauge. Next, the continuity equation is...
The first step is to compute the cross-sectional areas of the pipe and the Venturi throat to analyze the pressure difference indicated by the pressure gauge. Next, the continuity equation is...
1.8K
Design Example: Analyzing Capacity Contours for Flood Risk Assessment
286
Flood risk assessment involves careful planning and analysis to ensure the safety of communities near water retention structures. Capacity contours are a vital tool in this process, as they illustrate the potential spread of water at specific levels in a given area. In the context of building a bund across a small valley, these contours play a critical role in evaluating the safety of nearby residential areas.In this example, the bund is intended to store stormwater in the valley. The engineers...
286


