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Related Concept Videos

Rolling Without Slipping01:09

Rolling Without Slipping

People have observed the rolling motion without slipping ever since the invention of the wheel. For example, one can look at the interaction between a car's tires and the surface of the road. If the driver presses the accelerator to the floor so that the tires spin without the car moving forward, there must be kinetic friction between the wheels and the road's surface. If the driver slowly presses the accelerator, causing the car to move forward, the tires roll without slipping. It is essential...
Hydraulic Jump01:29

Hydraulic Jump

A hydraulic jump is a sudden rise in fluid depth in open channels, occurring when high-velocity (supercritical) flow transitions to low-velocity (subcritical) flow. This phenomenon requires an upstream Froude number greater than 1, as flows with Fr1<1 remain subcritical, making a hydraulic jump impossible due to the need for negative head loss, which violates thermodynamic principles.The characteristics of a hydraulic jump depend on the upstream Froude number and are classified as...
Rolling With Slipping01:14

Rolling With Slipping

Rolling with slipping is a physical phenomenon that occurs when a rolling object experiences both rotational and linear motion but also experiences frictional forces that cause slipping. This phenomenon can occur in various situations, such as when a tire rolls on a wet road or a ball rolls on a rough surface.
An object's rolling motion is characterized by its rotation around its axis, while linear motion refers to the object's translational motion along a surface. Frictional forces can affect...
Rolling Resistance01:21

Rolling Resistance

When a solid cylinder rolls steadily on a rigid surface, the normal force applied by the surface on the cylinder is perpendicular to the tangent at the contact point. However, since no materials are entirely rigid, the surface's reaction to the cylinder involves a range of normal pressures.
For instance, imagine a hard cylinder rolling on a comparatively soft surface. The cylinder's weight compresses the surface beneath it. As the cylinder moves, the material in front of it slows down due to...
First Impression01:09

First Impression

First impressions play a crucial role in social perception, shaping how individuals assess others in professional, academic, and interpersonal contexts. Psychological research highlights the significance of cognitive biases, such as the primacy and recency effects, which influence how people interpret and recall information.The Primacy Effect and Cognitive AnchoringThe primacy effect describes the tendency for initial information to impact judgment disproportionately. When individuals encounter...
Dry Friction01:30

Dry Friction

Dry friction occurs between two solid surfaces in contact as they attempt to move relative to one another. In daily life, dry friction is encountered in various forms, such as when walking on the ground, sliding an object across a table, or rubbing hands together. Despite its ubiquity, the underlying mechanisms behind dry friction are not readily visible.
To illustrate this concept, imagine a wooden crate resting on a rough, non-uniform horizontal surface. When an external force is applied to...

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Related Experiment Video

Updated: May 19, 2026

Visually Based Characterization of the Incipient Particle Motion in Regular Substrates: From Laminar to Turbulent Conditions
11:51

Visually Based Characterization of the Incipient Particle Motion in Regular Substrates: From Laminar to Turbulent Conditions

Published on: February 22, 2018

Bumpy start.

Melanie Evans

    Modern Healthcare
    |August 3, 2012
    PubMed
    Summary

    Many healthcare providers join Medicare's Accountable Care Organization (ACO) program without guaranteed success. Delays in accessing crucial data hinder their ability to improve care and achieve financial benefits within this innovative healthcare model.

    Area of Science:

    • Healthcare policy
    • Health services research
    • Medical economics

    Background:

    • Medicare's Accountable Care Organization (ACO) program encourages providers to improve care quality and reduce costs.
    • A significant number of providers are participating in the ACO initiative.
    • However, participation often involves substantial uncertainty regarding outcomes.

    Purpose of the Study:

    • To examine the challenges and uncertainties faced by providers entering Medicare's ACO program.
    • To highlight the critical role of data accessibility in ACO success.
    • To assess the gap between the program's intentions and providers' experiences.

    Main Methods:

    • Analysis of provider participation trends in Medicare's ACO program.
    • Qualitative assessment of provider experiences and reported challenges.

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    Published on: February 22, 2018

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    08:31

    Place and Response Learning in the Open-field Tower Maze

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  • Review of data sharing mechanisms and their timeliness within the ACO framework.

    • Main Results:

    • Providers are joining the ACO program in large numbers, often with limited assurance of clinical or financial gains.
    • Delayed data availability poses a significant obstacle for many ACOs.
    • The process of data sharing, despite willingness, presents unexpected complexities.

    Conclusions:

    • Provider engagement with the ACO program is high, but success is not guaranteed.
    • Timely and accessible data is essential for ACOs to achieve their objectives.
    • Addressing data-sharing complexities is crucial for optimizing the effectiveness of the ACO model.