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A toggle clamp is a mechanical device commonly used for holding and clamping objects in various applications, such as woodworking, metalworking, and assembly operations. Consider a toggle clamp subjected to a force of 200 N at the handle. The vertical clamping force can be calculated, provided the dimensions of the toggle clamp are known.
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Related Experiment Video

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A Machine Learning Approach to Design an Efficient Selective Screening of Mild Cognitive Impairment
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Defining heatwave thresholds using an inductive machine learning approach.

Juhyeon Park1, Jeongseob Kim1

  • 1School of Urban and Environmental Engineering, Ulsan National Institute of Science and Technology, Ulsan, South Korea.

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|November 8, 2018
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Summary

Establishing heatwave thresholds is crucial for public health. This study identified specific temperature and heat index triggers linked to increased emergency department visits for heat illness, aiding warning systems.

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Area of Science:

  • Environmental Health
  • Epidemiology
  • Biometeorology

Background:

  • Effective heatwave warning systems are vital for mitigating adverse health outcomes.
  • Defining precise heatwave thresholds is essential for public health interventions.
  • Understanding the non-linear relationship between meteorological variables and health impacts is key.

Purpose of the Study:

  • To define heatwave thresholds using an inductive approach based on health outcomes.
  • To identify critical meteorological variables and their non-linear associations with heat illness.
  • To inform the development of targeted heatwave warning systems and response plans.

Main Methods:

  • Utilized daily emergency department visit data for heat illnesses (2011-2016).
  • Collected data on 19 meteorological variables.
  • Employed Multivariate Adaptive Regression Splines (MARS) to identify threshold points ('knots') in variable behavior.

Main Results:

  • Identified two primary thresholds for general emergency department visitors: maximum daily temperature ≥ 32.58°C for 2 consecutive days and a heat index ≥ 79.64.
  • Observed increased morbidity at these identified thresholds.
  • Noted that children and outdoor workers are sensitive to heatwaves at lower thresholds, particularly in early summer.

Conclusions:

  • The study provides specific, data-driven heatwave thresholds for public health action.
  • Average daytime temperature (noon-6 PM) emerged as a potential alternative threshold.
  • Findings support the development of nuanced intervention strategies for heatwave health impacts.