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Mate Choice

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Mate choice—the decision about whom to mate with—is a type of natural selection, since animals must reproduce to pass down their genes. Mate choice is also called intersexual selection because the behavior occurs between the sexes.

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In an underdamped second-order system, where the damping ratio ζ is between 0 and 1, a unit-step input results in a transfer function that, when transformed using the inverse Laplace method, reveals the output response. The output exhibits a damped sinusoidal oscillation, and the difference between the input and output is termed the error signal. This error signal also demonstrates damped oscillatory behavior. Eventually, as the system reaches a steady state, the error diminishes to zero.

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A servo system exemplifies a second-order system, featuring a proportional controller and load elements that ensure the output position aligns with the input position. The relationship between these components is described by a second-order differential equation. Applying the Laplace transform under zero initial conditions yields the transfer function, showing how inputs are converted to outputs in the system.
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Updated: Jan 27, 2026

The Goeckerman Regimen for the Treatment of Moderate to Severe Psoriasis

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Published on: July 11, 2013

Choice Overload in Systemic Psoriasis Therapy

Patrick A Whitman¹, Abigail E Cline¹, Steven R Feldman^2,3,4

¹a Center for Dermatology Research, Department of Dermatology , Wake Forest School of Medicine , Winston-Salem , North Carolina ;

The Journal of Dermatological Treatment

|March 29, 2019

Summary

No abstract available in PubMed .

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