The bat-and-ball problem: Stronger evidence in support of a conscious error process.

Although the architecture, engineering and construction (AEC) industry is highly relevant to national development, it suffers from significant productivity challenges. Beneath the design and documentation of structures, a dynamic, complex process is taking place, with constant modifications and feedback involving numerous professionals from different fields and their respective approaches and work developed using various computer programs. This diversity of factors converges within an iterative trial-and-error process and does not stop until a refined model is achieved. To understand traditional structural engineering companies (SECs) in Chile involved in building private procurement projects, 25 non-value-adding SEC activities were identified and classified according to typical lean management waste categories. These were initially validated by a panel of experts and then confirmed through a survey of 37 companies. The identified activities reduce the productivity of SEC organizations, contributing to low AEC industry indicators.

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Motion periodicity and bifurcation of a wave excited hopping ball

Proceedings of The Royal Society A Mathematical Physical and Engineering Sciences ◽

10.1098/rspa.2019.0137 ◽

2019 ◽

Vol 475 (2228) ◽

pp. 20190137

Author(s):

Gaurang Ruhela ◽

Anirvan DasGupta

Keyword(s):

Wave Amplitude ◽

Harmonic Wave ◽

Inelastic Collisions ◽

Loss Of Stability ◽

Elastic Surface ◽

Minimum Frequency ◽

Surface Motion ◽

Return Map ◽

Ball Problem ◽

Subsequent Loss

We consider the problem of a hopping ball excited by a travelling harmonic wave on an elastic surface. The ball, considered as a particle, is assumed to interact with the surface through inelastic collisions. The surface motion due to the wave induces a horizontal drift in the ball. The problem is treated analytically under certain approximations. The phase space of the hopping motion is captured by constructing a phase-velocity return map. The fixed points of the return map and its compositions represent periodic hopping solutions. The linear stability of the obtained periodic solution is studied in detail. The minimum frequency for the onset of periodic hops, and the subsequent loss of stability at the bifurcation frequency, have been determined analytically. Interestingly, for small values of wave amplitude, the analytical solutions reveal striking similarities with the results of the classical bouncing ball problem.

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EXPRESS: Fooling System 1 in the field of perception: Failure to Intuitively Detect Attribute Substitution in the Flushtration Count Illusion

Quarterly Journal of Experimental Psychology ◽

10.1177/17470218211069381 ◽

2021 ◽

pp. 174702182110693

Author(s):

Cyril Thomas ◽

Marion Botella ◽

André Didierjean

Keyword(s):

Human Brain ◽

Cognitive Style ◽

Cognitive Reflection Test ◽

Substitution Error ◽

Perceptual Illusion ◽

Cognitive Reflection ◽

Ball Problem ◽

Perceptual Attribute ◽

System 1 ◽

The Relationship

To facilitate our interactions with the surroundings, the human brain sometimes reshapes the situations that it faces in order to simplify them. This phenomenon has been widely studied in the context of reasoning, especially through the attribute substitution error. It has however been given much less attention in the field of perception. Recent research on the bat-and-ball problem suggests that reasoners are able to intuitively detect attribute substitution errors. Using a perceptual illusion drawn from the field of magic, we investigate the extent to which a perceptual form of attribute substitution depends on executive resources and can be detected. We also investigate the relationship between susceptibility to attribute substitution error in the flushtration count illusion and in a French adaptation of the bat-and ball problem. Finally, we investigate the link between the intuitive cognitive style (assessed by the Cognitive Reflection Test) and the susceptibility to the flushtration count illusion. Our results suggest that participants do not detect perceptual attribute substitution error, that this phenomenon could be independent of the executive resources allocated to the task, and could rest on mechanisms distinct from those that produce errors in reasoning. We discuss differences between these two phenomena, and factors that may explain them.

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Stick-Slip, Imposition-Removal of Constraints and the Spinning Ball Problem

Journal of Applied Mechanics ◽

10.1115/1.1334861 ◽

2000 ◽

Vol 67 (4) ◽

pp. 720-726

Author(s):

S. Djerassi

Keyword(s):

Computer Program ◽

Experimental Results ◽

Stick Slip ◽

Elastic Bodies ◽

Cyclic Motion ◽

Ball Problem

It has been observed that balls pressed between elastic bodies spin when subjected to linear, cyclic motion. This paper proposes an explanation to this phenomenon, based upon the stick-slip theory. To this end, a modified, vectorial formulation of the stick-slip theory is presented. The formulation is applied to a model comprising a ball pressed between pairs of springs and dampers. A computer program based on this formulation is used to predict the resulting motion. Predictions are shown to agree with experimental results. [S0021-8936(01)00701-2]

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Algebraic reasoning and bat-and-ball problem variants: Solving isomorphic algebra first facilitates problem solving later

Psychonomic Bulletin & Review ◽

10.3758/s13423-017-1241-8 ◽

2017 ◽

Vol 24 (6) ◽

pp. 1922-1928 ◽

Cited By ~ 6

Author(s):

Jerome D. Hoover ◽

Alice F. Healy

Keyword(s):

Problem Solving ◽

Algebraic Reasoning ◽

Ball Problem

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Saliency: Can You See Me Now?

Tap ◽

10.7551/mitpress/9780262036276.003.0008 ◽

2017 ◽

Cited By ~ 2

Author(s):

Anindya Ghose

Keyword(s):

Position Effect ◽

Purchase Decisions ◽

Trial And Error ◽

Mobile Advertising ◽

Ideal World ◽

Error Process

This chapter examines one of nine critical forces behind purchase decisions that make mobile advertising so powerful: saliency. Today's consumers may find advertising annoying, but they fear missing out and would prefer not to waste time in the trial-and-error process of searching for what they need. They want choice and freedom, but they also get easily overwhelmed. Imagine an ideal world where we don't need to scroll down and squint to find what we want. We don't need to refine and repeat our search or make a tough call. We always get the “best right answer” with the least possible effort. This is referred as saliency or the position effect. Consumers want to see the best right answer stand out on their screens. Advertisers, retailers, and other marketers want their message to be that “best right answer.”

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