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Related Concept Videos

Range00:59

Range

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The range is one of the measures of variation. It can be defined as the difference between a dataset's highest and lowest values. For example, in the study of seven 16-ounce soda cans, the filled volume of soda was measured, thus producing the following amount (in ounces) of soda:
15.9; 16.1; 15.2; 14.8; 15.8; 15.9; 16.0; 15.5
Measurements of the amount of soda in a 16-ounce can vary since different subjects record these measurements or since the exact amount - 16 ounces of liquid, was not...
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Leaky Scanning02:28

Leaky Scanning

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During most eukaryotic translation processes, the small 40S ribosome subunit scans an mRNA from its 5' end until it encounters the first start AUG codon. The large 60S ribosomal subunit then joins the smaller one to initiate protein synthesis. The location of the translation initiation is largely determined by the nucleotides near the start codon as there may be multiple translation initiation sites present on the mRNA.  Marilyn Kozak discovered that the sequence RCCAUGG (where R...
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Trial and Error and Algorithm01:12

Trial and Error and Algorithm

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A problem-solving strategy is a plan of action used to find a solution. Different strategies have distinct action plans. Trial and error involves trying different solutions until one works. For instance, to fix a broken printer, you might check ink levels, ensure the paper tray isn't jammed, and verify the printer's connection to your laptop. This method can be time-consuming but is commonly used. Thomas Edison, for example, used trial and error to find a suitable filament for the light...
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¹H NMR: Long-Range Coupling01:27

¹H NMR: Long-Range Coupling

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The coupling interactions of nuclei across four or more bonds are usually weak, with J values less than 1 Hz. While these are usually not observed in spectra, the presence of multiple bonds along the coupling pathway can result in observable long-range coupling.
In alkenes, spin information is communicated via σ–π overlap, as seen in allylic (four-bond) and homoallylic (five-bond) couplings. These coupling interactions are stronger when the σ bond is parallel to the alkene...
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Variation: Normal Distribution, Range, and Standard Deviation02:32

Variation: Normal Distribution, Range, and Standard Deviation

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In the field of psychology, there are several ways to organize measurements of a trait, feature, or characteristic (i.e., variables). Qualitative data, such as ethnicity, can be tabulated into a frequency count to provide information about the proportion, as well as the variety of groups in a sample or population. On the other hand, researchers can perform a wider set of calculations on quantitative data. The mean, mode, and median, for instance, are central tendency measures to identify a...
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Angle of Twist - Elastic Range01:13

Angle of Twist - Elastic Range

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Consider a cylindrical shaft with a length denoted by L and a consistent cross-sectional radius referred to as r. This shaft undergoes a torque at the free end. The highest shearing strain within the shaft is directly proportional to the twist angle and the radial distance from the shaft axis. When the shaft behaves elastically, this shearing strain can be articulated using variables such as the applied torque, radial distance, the polar moment of inertia, and the modulus of rigidity. By...
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Related Experiment Video

Updated: Feb 8, 2026

3D Scanning Technology Bridging Microcircuits and Macroscale Brain Images in 3D Novel Embedding Overlapping Protocol
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Novel Efficient 3D Short-range Imaging Algorithms for a Scanning 1D-MIMO Array.

Jingkun Gao, Yuliang Qin, Bin Deng

    IEEE Transactions on Image Processing : a Publication of the IEEE Signal Processing Society
    |July 12, 2018
    PubMed
    Summary
    This summary is machine-generated.

    New millimeter-wave (MMW) 3D holography imaging algorithms offer faster, higher-quality reconstructions for short-range applications. These methods improve upon traditional techniques by addressing computational speed and approximation limitations.

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    DNA Microarrays: Sample Quality Control, Array Hybridization and Scanning
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    Area of Science:

    • Electromagnetics and Optics
    • Signal Processing
    • Computational Imaging

    Background:

    • Millimeter-wave (MMW) 3D holography using scanning 1D Multiple Input Multiple Output (MIMO) arrays offers advantages over Single Input Single Output (SISO) systems for short-range imaging.
    • Existing imaging algorithms suffer from slow back-projection (BP) methods or poor quality due to approximations.

    Purpose of the Study:

    • Develop fast, fully-focused imaging algorithms for MMW 3D holography.
    • Improve reconstruction quality and computational efficiency compared to current methods.

    Main Methods:

    • Proposed two novel fast, fully-focused imaging algorithms for MMW 3D holography.
    • Algorithms assume evenly distributed receivers; one requires evenly located transmitters, the other allows arbitrary transmitter positions.
    • Derived frequency domain expressions of the modified Kirchhoff method to enhance precision.

    Main Results:

    • Validated the effectiveness of the proposed algorithms through simulations and experiments.
    • Demonstrated significant improvements in both reconstruction quality and computational efficiency.
    • Discussed implementation aspects like resolution, sampling criteria, and computational complexity.

    Conclusions:

    • The developed algorithms effectively address the limitations of existing MMW 3D holography imaging techniques.
    • These methods provide a superior balance of speed and accuracy for short-range holographic imaging applications.