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相关概念视频

Applications of GIS: Disaster Management and Emergency Response01:29

Applications of GIS: Disaster Management and Emergency Response

64
Geographic Information System (GIS) technology is essential for risk identification, action prioritization, and resource optimization in critical situations like flooding and earthquakes. By integrating spatial and demographic data, GIS provides a comprehensive framework for emergency response.GIS integrates data layers, like rainfall intensity, topography, elevation profiles, and river levels, to model high-risk flood zones. These layers assess areas susceptible to flooding based on their...
64
Strategies for Assessing and Addressing Confounding01:25

Strategies for Assessing and Addressing Confounding

87
Confounding is a critical issue in epidemiological studies, often leading to misleading conclusions about associations between exposures and outcomes. It occurs when the relationship between the exposure and the outcome is mixed with the effects of other factors that influence the outcome. Given that, addressing confounding is of high importance for drawing accurate inferences in research.
Confounding can be addressed at both the design phase of a study and through analytical methods after data...
87
Hazard Rate01:11

Hazard Rate

95
The hazard rate, also known as the hazard function or failure rate, is a statistical measure used to describe the instantaneous rate at which an event occurs, given that the event has not yet happened. From a probabilistic perspective, it represents the likelihood that a subject will experience the event in a very small time interval, conditional on surviving up to the beginning of that interval. In terms of frequency, the hazard rate can be viewed as the ratio of the number of events to the...
95
Design Example: Analyzing Capacity Contours for Flood Risk Assessment01:17

Design Example: Analyzing Capacity Contours for Flood Risk Assessment

41
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...
41
Steps in Outbreak Investigation01:18

Steps in Outbreak Investigation

115
In the ever-evolving field of public health, statistical analysis serves as a cornerstone for understanding and managing disease outbreaks. By leveraging various statistical tools, health professionals can predict potential outbreaks, analyze ongoing situations, and devise effective responses to mitigate impact. For that to happen, there are a few possible stages of the analysis:
115
Hazard Ratio01:12

Hazard Ratio

103
The hazard ratio (HR) is a widely used measure in clinical trials to compare the risk of events, such as death or disease recurrence, between two groups over time. It reflects the ratio of hazard rates—the instantaneous risk of the event occurring—between a treatment group and a control group. This measure provides valuable insights into the relative effectiveness of a treatment by assessing how the risk of an event differs between the two groups.
For example, in a clinical trial...
103

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相关实验视频

Updated: Jun 16, 2025

Watershed Planning within a Quantitative Scenario Analysis Framework
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基于数据的多种危害易感性和社区认知评估,采用混合方法方法.

Muhammad Hussain1, Kashif Ullah1, Muhammad Tayyab1

  • 1Institute of Natural Disaster Research, School of Environment, Northeast Normal University, Changchun, 130024, China.

Journal of environmental management
|May 31, 2025
PubMed
概括

这项研究使用机器学习和调查评估了巴基斯坦的多种危害易感性和社区认知. 调查结果揭示了洪水和山体滑坡的重大风险,以及社区的意识和准备不足,突出了针对性灾害风险管理的需求.

关键词:
社区的看法 社区的看法地理信息系统 (GIS) 是一个机器学习是机器学习.对多种危险的敏感性评估.巴基斯坦 巴基斯坦 巴基斯坦.遥感是一种远程传感.

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Integrating Remote Sensing with Species Distribution Models; Mapping Tamarisk Invasions Using the Software for Assisted Habitat Modeling SAHM
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科学领域:

  • 环境科学 环境科学
  • 灾害管理 灾害管理
  • 地理空间分析是什么

背景情况:

  • 有效的灾害风险管理需要将多重危险易感性评估与社区洞察力相结合.
  • 有限的研究已经共同解决了多重危险风险和社区对气候变化适应的看法.
  • 巴基斯坦的东印度库什地区面临着重大多重危险威胁,需要进行本地风险评估.

研究的目的:

  • 开发和应用数据驱动的框架来评估综合多种危险 (洪水和山体滑坡) 的易感性.
  • 评估社区对这些危险的风险感知,沟通和准备.
  • 为加强减少灾害风险和减缓气候变化战略提供见解.

主要方法:

  • 这是一个两阶段的框架,结合了机器学习,遥感,地理信息系统和基于索引的方法.
  • 第一个阶段:生成洪水和山体滑坡库存,用于敏感性测绘的物流回归分析.
  • 第二阶段:使用结构化问卷对家庭进行调查 (n=410),以评估社区的风险感知和准备.

主要成果:

  • 研究区域的25.81%和35.43%分别容易受到洪水和山体滑坡的影响.
  • 该地区的15.07%面临着对洪水和山体滑坡的同时易感性.
  • 社区对风险的认识很高,但应对能力和准备 (保险,培训) 是不够的,加上社会经济挑战.

结论:

  • 该研究提出了一个整体框架,用于识别多重危险热点,了解社区的脆弱性.
  • 调查结果强调需要有针对性的干预措施来弥合风险意识和准备之间的差距.
  • 将地理空间分析与社会经济数据相结合,对于在易受灾害影响的地区有效地建立抗灾能力至关重要.