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Related Concept Videos

Pivot Bearings01:23

Pivot Bearings

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In mechanical systems, bearings are crucial in facilitating relative motion between two components while minimizing friction and wear. They help distribute various loads (radial, axial or a combination of both loads) across machinery parts, ensuring smooth and efficient operation.
A pivot bearing is a specialized type of bearing designed to support axial loads on a rotating shaft. The bearing surface, or the pivot, is positioned at the end of a shaft to support the axial thrust. The pivot may...
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Virtual Work01:20

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The principle of virtual work states that if a body is in static and dynamic equilibrium, then the sum of all the virtual work done by all external forces and couple moments for any given virtual displacement must be zero.
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Stability of structures01:14

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In mechanical engineering, the stability of systems under various forces is critical for designing durable and efficient structures. One fundamental way to explore these concepts is by analyzing systems like two rods connected at a pivot point, O, with a torsional spring of spring constant k at the pivot point. This system is similar in appearance to a scissor jack used to change tires on a car. In this case, the arms of the linkage (equivalent to the rods in this system) are entirely vertical,...
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Guidelines and Strategies for Safe Computer Charting01:18

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The guidelines and strategies provided by the American Nurses Association (ANA) and the Canadian Nurses Association (CNA) offer essential principles for ensuring safe and secure computer charting systems in healthcare settings. Let's break down each recommendation:
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Support Reactions in Three Dimensions01:27

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Support reactions in three dimensions help maintain the stability and equilibrium of various structures and systems. These reactions prevent the system from translating and rotating, ensuring the design can withstand external forces and perform its intended function efficiently and safely. Some of the supports providing support reactions in three dimensions are discussed below:
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Principle of Virtual Work: Problem Solving01:13

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The principle of virtual work is an essential concept in the field of mechanics and engineering. This is used to solve problems related to the equilibrium of a structure or system. It is based on the assumption that if a system is in equilibrium, the work done by all the forces during a virtual displacement is zero. This principle is applied by considering virtual displacements of the system and the corresponding work done by internal and external forces.
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Ten simple rules for supporting a temporary online pivot in higher education.

Emily Nordmann1, Chiara Horlin1, Jacqui Hutchison2

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The COVID-19 pandemic necessitates a shift to online learning, requiring institutions to develop accessible and equitable remote teaching and assessment strategies for the 2020-2021 academic year.

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Area of Science:

  • Education
  • Online Learning Pedagogy
  • Higher Education Crisis Management

Background:

  • The COVID-19 pandemic has caused widespread disruption to academic institutions globally.
  • Contingency plans are being developed for the 2020-2021 academic year, including a pivot to online delivery for face-to-face programs.
  • This transition impacts all levels of education, from foundational degrees to professionally accredited courses.

Discussion:

  • Institutions face the challenge of delivering accessible, fair, and equitable online teaching and assessment.
  • The temporary nature of this pivot requires balancing established online learning pedagogy with practical crisis-driven needs.
  • No universal solution exists, necessitating tailored approaches for individual institutions, programs, and courses.

Key Insights:

  • Developing effective online learning strategies requires a deep understanding of student needs and pedagogical best practices.
  • Balancing accessibility, equity, and quality in remote education is paramount during this transitional period.
  • The crisis highlights the need for flexible and adaptable educational frameworks to address future disruptions.

Outlook:

  • This paper offers foundational principles to guide global discussions on effective online education strategies.
  • It emphasizes the importance of integrating online learning pedagogy with practical considerations for crisis situations.
  • The insights aim to support institutions in navigating the current academic year and preparing for future uncertainties.