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Related Concept Videos

Frequency-dependent Selection01:21

Frequency-dependent Selection

23.9K
When the fitness of a trait is influenced by how common it is (i.e., its frequency) relative to different traits within a population, this is referred to as frequency-dependent selection. Frequency-dependent selection may occur between species or within a single species. This type of selection can either be positive—with more common phenotypes having higher fitness—or negative, with rarer phenotypes conferring increased fitness.
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What is a Frequency Distribution00:51

What is a Frequency Distribution

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A frequency is the number of times a value of the data occurs. The sum of all the frequency values represents the total number of students included in the sample. It is commonly used to group data of quantitative types. Frequency distributions can be displayed in a table, histogram, line graph, dot plot, or pie chart, just to name a few. A histogram is a graphical representation of tabulated frequencies, shown as adjacent rectangles, erected over discrete intervals (bins), with an area equal to...
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Mean From a Frequency Distribution01:11

Mean From a Frequency Distribution

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Sometimes, data gathered from an experiment on a large sample or population are organized into concise tables. In such cases, the frequency of the quantitative data set is plotted in the form of a table. Or else, the data values are grouped into the quantity’s intervals, which form classes, and their respective frequencies are known. That is, the data values are distributed over different categories or classes. This is known as frequency distribution.
When such a data set is encountered,...
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Tagging and Fusion Proteins01:24

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Proteins are involved in several cellular processes and biochemical reactions. Analyzing a specific protein of interest requires it to be isolated from the other proteins in the cell. This is achieved by overexpressing the specific gene in a suitable host to produce large quantities of the target protein. A tag or label is recombined with the gene to produce a fusion protein containing the target protein and the tag. The tags on these fusion proteins can then be used for easy detection and...
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Muscle Stimulation Frequency01:22

Muscle Stimulation Frequency

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The contraction strength of muscles is regulated by motor neurons, which modulate the frequency of action potentials dispatched to the motor units based on the body's requirements. This process of varying the muscle stimulation frequency allows muscles to contract with a force that is precisely tailored to the needs of the moment, whether lifting a feather or a heavy box.
Wave summation
At low firing rates, motor neurons induce individual twitch contractions in muscle fibers. These twitches...
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Frequency Response of BJT01:24

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The frequency response of a Bipolar Junction Transistor (BJT) in a common-emitter configuration is critical to its functionality, especially in applications involving amplification of alternating current (AC) signals. This response can be analyzed through low-frequency and high-frequency equivalent circuits, considering various internal parameters and external conditions.
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A Frequency Signature RFID Chipless Tag for Wearable Applications.

Laura Corchia1, Giuseppina Monti2, Luciano Tarricone3

  • 1Department of Engineering for Innovation, University of Salento, via per Monteroni, 73100 Lecce, Italy. laura.corchia@unisalento.it.

Sensors (Basel, Switzerland)
|January 30, 2019
PubMed
Summary

A novel textile Radio-Frequency Identification (RFID) chipless tag is developed for seamless integration into clothing. This frequency-signature tag shows promise for wearable anti-counterfeiting and laundry labeling applications.

Keywords:
RFIDchipless tagfully-textilewearable

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Area of Science:

  • Electrical Engineering
  • Materials Science
  • Wearable Technology

Background:

  • Traditional Radio-Frequency Identification (RFID) tags often lack seamless integration in textiles.
  • The development of chipless RFID tags offers a pathway to more discreet and integrated identification solutions.
  • Wearable electronics demand robust and unobtrusive identification and tracking systems.

Purpose of the Study:

  • To present a frequency-signature Radio-Frequency Identification (RFID) chipless tag specifically designed for wearable applications.
  • To demonstrate a fully-textile RFID solution for seamless integration into clothing.
  • To evaluate the performance and suitability of the proposed tag for practical uses like anti-counterfeiting and laundry labels.

Main Methods:

  • Design and fabrication of a chipless RFID tag comprising two planar monopole antennas and a microstrip line with slotted resonators.
  • Utilization of pile fabric as a substrate and conductive fabric for conductive elements.
  • Numerical simulations and experimental testing of a 2-bit implementation.

Main Results:

  • A compact, fully-textile frequency-signature RFID chipless tag was successfully fabricated and tested.
  • The tag integrates two proximity-fed planar monopole antennas with a microstrip line featuring slotted resonators for size reduction.
  • Experimental data confirmed the tag's suitability for wearable applications, despite material and fabrication sensitivities.

Conclusions:

  • The proposed frequency-signature RFID chipless tag is a viable solution for wearable applications.
  • Seamless integration into textiles is achievable with the developed fully-textile design.
  • The tag holds potential for use in anti-counterfeiting systems and smart laundry labels.