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Related Concept Videos

Stress Concentrations01:13

Stress Concentrations

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The concept of stress concentration is crucial for understanding how materials respond under bending stresses, particularly when there are irregularities or discontinuities in the material's geometry. Normally, stress in a symmetric member subjected to pure bending is assumed to be uniformly distributed across the entire cross-section. However, this assumption does not hold when there are variations in the cross-sectional geometry or the presence of notches and holes.
The stress...
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Stress Concentrations01:24

Stress Concentrations

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Stress concentration is when stress intensifies near discontinuities such as holes or abrupt cross-sectional changes in a structural member. This localized stress can often surpass the average stress within the member. The stress distribution in flat bars, either with a circular hole or varying widths connected by fillets, can be determined experimentally using a photoelastic method. The results are based on ratios of geometric parameters like the ratio of the hole's radius to the smaller...
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Exercise Stress Test01:26

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Introduction
Exercise stress testing, commonly known as a treadmill test, is a noninvasive procedure used to evaluate cardiovascular function and diagnose heart conditions.
Definition
An exercise stress test measures the heart's response to exertion using a treadmill or stationary bicycle. Chest electrodes record the heart's electrical activity through an ECG, and blood pressure is monitored regularly.
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Stress Prevention and Stress Management Techniques IV01:26

Stress Prevention and Stress Management Techniques IV

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Stress often leads to unhealthy habits like smoking, excessive drinking, and overeating, which offer short-term relief but ultimately increase long-term health risks. These behaviors create a cycle that temporarily lowers stress levels but can result in severe long-term health consequences. Breaking these habits is essential to reduce the risk of chronic diseases and improve overall well-being. Three primary changes that support better health include quitting smoking, reducing alcohol intake,...
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Components of Stress01:23

Components of Stress

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Stress analysis under multiple loading conditions is intricate, necessitating a comprehensive grasp of normal and shearing stresses. Consider a small cube at point O, subjected to stress on all six faces, visible or not. Normal stress components σx, σy, σz act perpendicularly to the x, y, and z axes. Shearing stress components τxy and τxz are exerted on faces perpendicular to these axes.
Interestingly, the hidden cube faces also experience these stresses, equal and...
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Psychological Responses to Stress01:20

Psychological Responses to Stress

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Psychological responses to stress encompass the various cognitive and emotional reactions individuals experience when faced with challenging or threatening situations, such as a job loss. Prolonged exposure to stressors can disturb emotional balance, increasing negative emotions (e.g., anxiety and sadness) and diminishing positive emotions (e.g., joy and satisfaction). These persistent emotional shifts are associated with an increased risk of both physical illness and mental health issues, such...
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Related Experiment Video

Updated: Jan 12, 2026

Evaluation of Commercial-Off-The-Shelf Wrist Wearables to Estimate Stress on Students
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Measuring Stress in Nursing Students Before and After Multi-Patient High-Fidelity Simulation.

LisaMarie Wands, Hannah B Jarvis

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    Summary

    Student stress during high-fidelity simulation increased engagement and decreased distress, highlighting its role in creating optimal learning environments. Understanding student stress in simulation is key for educators.

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    Area of Science:

    • Medical Education
    • Simulation-Based Learning
    • Student Psychology

    Background:

    • Student stress in simulation-based learning is crucial for identifying learning facilitators and barriers.
    • High-fidelity simulations offer complex learning scenarios that may impact student stress levels.

    Purpose of the Study:

    • To assess prelicensure students' perceptions of stress before and after a high-fidelity, multiple-patient simulation.
    • To understand how simulation experiences influence student distress, engagement, and worry.

    Main Methods:

    • An observational pretest-posttest design was used.
    • The Short Stress State Questionnaire measured distress, engagement, and worry.
    • Wilcoxon sum-rank tests analyzed changes in stress domains.

    Main Results:

    • 149 students completed pre- and post-simulation tests.
    • A significant increase in student engagement was observed.
    • A significant decrease in student distress was noted, with no change in worry.

    Conclusions:

    • Balanced stress levels can enhance alertness and engagement in learning.
    • Measuring student stress in simulations informs the development of effective learning environments.
    • Simulation-based learning can positively impact student engagement and reduce distress.