Jove
Visualize
Contact Us
JoVE
x logofacebook logolinkedin logoyoutube logo
ABOUT JoVE
OverviewLeadershipBlogJoVE Help Center
AUTHORS
Publishing ProcessEditorial BoardScope & PoliciesPeer ReviewFAQSubmit
LIBRARIANS
TestimonialsSubscriptionsAccessResourcesLibrary Advisory BoardFAQ
RESEARCH
JoVE JournalMethods CollectionsJoVE Encyclopedia of ExperimentsArchive
EDUCATION
JoVE CoreJoVE BusinessJoVE Science EducationJoVE Lab ManualFaculty Resource CenterFaculty Site
Terms & Conditions of Use
Privacy Policy
Policies

Related Concept Videos

Design Example: Analyzing Capacity Contours for Flood Risk Assessment01:17

Design Example: Analyzing Capacity Contours for Flood Risk Assessment

43
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...
43
Design Example: Creating a Hydraulic Model of a Dam Spillway01:21

Design Example: Creating a Hydraulic Model of a Dam Spillway

158
Scaled hydraulic models of dam spillways provide a practical way to replicate and study the intricate flow dynamics of these structures. Often built to a 1:15 ratio, these models allow for observing critical water behavior, such as velocity distribution, flow patterns, and energy dissipation.
158
Distributed Loads: Problem Solving01:21

Distributed Loads: Problem Solving

641
Beams are structural elements commonly employed in engineering applications requiring different load-carrying capacities. The first step in analyzing a beam under a distributed load is to simplify the problem by dividing the load into smaller regions, which allows one to consider each region separately and calculate the magnitude of the equivalent resultant load acting on each portion of the beam. The magnitude of the equivalent resultant load for each region can be determined by calculating...
641
Design Example: Calculating Safe Diameter for Wind-Exposed Disc01:17

Design Example: Calculating Safe Diameter for Wind-Exposed Disc

55
Assessing safety in wind-exposed installations is crucial to preventing potential failures. This example explores the calculation and design adjustments needed to mount a circular disc on a building facade, where wind forces are a primary concern. A 4-meter diameter disc was initially designed as an aesthetic feature facing winds at a velocity of 25 meters per second, with an air density of 1.25 kilograms per cubic meter. Given these conditions, the drag force on the disc was determined using...
55
Applications of GIS: Disaster Management and Emergency Response01:29

Applications of GIS: Disaster Management and Emergency Response

65
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...
65
Flow Table Test01:12

Flow Table Test

147
The flow table test is an established method used to assess the workability of concrete, particularly useful for evaluating highly flowable concrete mixes. This test employs an apparatus that consists of a wooden board topped with a steel plate, collectively weighing 35 pounds. The board is connected to a base via a hinge and measures 27.6 inches on each side.
Concrete is placed within a truncated cone mold that is 8 inches high with an 8-inch base diameter and a 5-inch top diameter. The...
147

You might also read

Related Articles

Articles linked to this work by shared authors, journal, and citation graph.

Sort by
Same author

Prognostic Impact of Sarcopenia Following Myocardial Infarction: A Systematic Review and Meta-analysis of Mortality and Recurrent MI.

European journal of preventive cardiology·2026
Same author

A Covalent Resveratrol-Polyoxometalate Hybrid for Synergistic Disassembly of Prion Protein Fragment 106-126 Aggregates and Catalytic Scavenging of Reactive Oxygen Species.

Small (Weinheim an der Bergstrasse, Germany)·2026
Same author

High-performance tunnel-junction micro-LEDs grown by MOCVD without post-growth annealing.

Optics express·2026
Same author

Prevalence of insufficient outdoor activity and caregiver-related correlates among school-aged children in Beijing, China: a cross-sectional analysis.

Frontiers in public health·2026
Same author

Molecular mechanism of MAFB transcriptional activation of PPARD in regulating adipose browning and protecting against vascular endothelial cell injury.

Experimental cell research·2026
Same author

Factors and pathways influencing sugar-sweetened beverage consumption among children in middle childhood: a cross-sectional survey of 1,127 third-grade students in Beijing.

Frontiers in public health·2026
Same journal

Characterization of genomic diversity in bacteriophages infecting Rhodococcus.

PloS one·2026
Same journal

Effectiveness of the Responding to Experienced and Anticipated Discrimination (READ) training on reducing stigma for medical students in Tunisia.

PloS one·2026
Same journal

Cell-cell junction gene signatures as subtype-specific prognostic biomarkers in breast cancer.

PloS one·2026
Same journal

GC-MS based tentative identification of γ-sitosterol from Brassica nigra seeds and evaluation of its anticancer potential: An integrated in vitro and in silico study.

PloS one·2026
Same journal

Ad-based social media interventions increase belief accuracy and generate pro-social opinions among non-news readers.

PloS one·2026
Same journal

Negotiating knowledge: The role of network hedging in the production of high-impact science.

PloS one·2026
See all related articles

Related Experiment Video

Updated: Jun 23, 2025

Watershed Planning within a Quantitative Scenario Analysis Framework
12:44

Watershed Planning within a Quantitative Scenario Analysis Framework

Published on: July 24, 2016

8.0K

A combination weighting method for debris flow risk assessment based on t-distribution and linear programming

Li Li1, Hanjie Lin1, Yue Qiang1

  • 1Civil Engineering College, Chongqing Three Gorges University, Wanzhou, Chongqing, China.

Plos One
|June 14, 2024
PubMed
Summary
This summary is machine-generated.

This study introduces a novel debris flow risk assessment method using t-distribution and linear programming optimization algorithm (LPOA), improving upon traditional techniques by considering indicator importance and debris flow frequency for more accurate risk evaluation.

More Related Videos

Inverse Probability of Treatment Weighting Propensity Score using the Military Health System Data Repository and National Death Index
06:55

Inverse Probability of Treatment Weighting Propensity Score using the Military Health System Data Repository and National Death Index

Published on: January 8, 2020

14.4K
An R-Based Landscape Validation of a Competing Risk Model
05:37

An R-Based Landscape Validation of a Competing Risk Model

Published on: September 16, 2022

2.0K

Related Experiment Videos

Last Updated: Jun 23, 2025

Watershed Planning within a Quantitative Scenario Analysis Framework
12:44

Watershed Planning within a Quantitative Scenario Analysis Framework

Published on: July 24, 2016

8.0K
Inverse Probability of Treatment Weighting Propensity Score using the Military Health System Data Repository and National Death Index
06:55

Inverse Probability of Treatment Weighting Propensity Score using the Military Health System Data Repository and National Death Index

Published on: January 8, 2020

14.4K
An R-Based Landscape Validation of a Competing Risk Model
05:37

An R-Based Landscape Validation of a Competing Risk Model

Published on: September 16, 2022

2.0K

Area of Science:

  • Geosciences
  • Natural Hazard Assessment
  • Risk Management

Background:

  • Debris flow risk assessment is crucial for prevention and control projects.
  • Existing methods often overemphasize objective or subjective indicators, neglecting indicator interactions.
  • Traditional methods like EWM and VCM overlook the impact of debris flow frequency on risk.

Purpose of the Study:

  • To propose a new weight calculation method for debris flow risk assessment.
  • To integrate t-distribution and linear programming optimization algorithm (LPOA) for robust weighting.
  • To enhance risk assessment accuracy by avoiding overemphasis on single indicators and incorporating frequency effects.

Main Methods:

  • Initial weights derived using Analytic Hierarchy Process (AHP), Entropy Weight Method (EWM), and Variation Coefficient Method (VCM).
  • Weight intervals determined using t-distribution at various confidence levels.
  • Final weights calculated via LPOA within a 90% confidence interval for debris flow risk scoring.

Main Results:

  • The proposed method avoids overemphasizing individual indicators compared to EWM and VCM.
  • The fusion weighting method effectively incorporates debris flow frequency, a factor missed by EWM and VCM.
  • In Beichuan County, 72 debris flows were assessed, with most categorized as moderate and light risks (8 high, 24 medium, 40 light).

Conclusions:

  • The developed fusion weighting method provides a more rational and comprehensive approach to debris flow risk assessment.
  • The method's ability to avoid single-indicator bias and include frequency effects enhances its applicability.
  • Findings offer valuable insights for combination weighting methods and debris flow risk management strategies.