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Related Concept Videos

Errors and Mistakes in Surveying01:19

Errors and Mistakes in Surveying

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Errors and mistakes in surveying refer to inaccuracies in measurements and data recording. The errors are deviations from the actual value caused by human sensory limitations, equipment flaws, or environmental effects. These errors are typically unintentional and can result from the inherent imperfections in the instruments used, atmospheric conditions, or the observer’s inability to perceive exact measurements. On the other hand, mistakes are caused by the surveyor's lack of...
374
Errors in Taping01:18

Errors in Taping

187
Errors in taping arise from multiple factors that can significantly impact measurement accuracy in surveying. Misalignment of the tape, often due to human error, is one primary source. A skilled rear tapeman, using a telescope, can help correct alignment by guiding the head tapeman; however, human limitations still lead to small inaccuracies. These errors may include misplacement of pins or inaccurate tape readings due to common visual confusions, such as mistaking a six for a nine. Such...
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Types of Errors: Detection and Minimization01:12

Types of Errors: Detection and Minimization

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Error is the deviation of the obtained result from the true, expected value or the estimated central value. Errors are expressed in absolute or relative terms.
Absolute error in a measurement is the numerical difference from the true or central value. Relative error is the ratio between absolute error and the true or central value, expressed as a percentage.
Errors can be classified by source, magnitude, and sign. There are three types of errors: systematic, random, and gross.
Systematic or...
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Common Leveling Mistakes and Errors01:17

Common Leveling Mistakes and Errors

201
A survey team is tasked with determining the elevation difference between points Point A and Point B, separated by uneven terrain. They use a leveling instrument and a leveling rod.Common MistakesMisreading the Rod: During a backsight reading at Point A, the instrumentman observes the rod partially obscured by tall grass. Instead of reading 1.135 m, they mistakenly record 1.735 m due to the misalignment of the crosshair with the wrong graduation. This error adds 0.600 m to all subsequent...
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Distance Corrections01:15

Distance Corrections

162
To achieve precise distance measurements, especially in surveying and construction, certain corrections must be applied to account for potential sources of error like the standardization errors, temperature variations, and slope adjustments.Standardization error emerges when measurement equipment undergoes changes, such as wear, repairs, or weather impacts. To address this, surveyors compare the equipment’s readings to a standard. This process identifies any deviation that might lead to...
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Proofreading01:43

Proofreading

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Overview
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Author Spotlight: Advancements in Refractive Surgical Correction for Presbyopia and Exploring Postoperative Visual Acuity
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Errata

    CJC Open
    |March 1, 2021
    PubMed
    Summary
    This summary is machine-generated.

    This study corrects a previously published article DOI. The correction ensures accurate citation and referencing for scientific research. This ensures the integrity of the scientific record.

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    Area of Science:

    • Bibliometrics
    • Scientific Publishing
    • Scholarly Communication

    Context:

    • Correction of a previously published article DOI.
    • Ensuring accurate citation and referencing.
    • Maintaining the integrity of the scientific record.

    Purpose:

    • To provide the correct article DOI for proper attribution.
    • To facilitate accurate retrieval of the research article.
    • To uphold scholarly standards in scientific communication.

    Summary:

    • The article DOI 10.1016/j.cjco.2019.05.007 has been corrected.
    • This correction is essential for accurate citation and referencing.
    • Ensures readers can locate the intended research.

    Impact:

    • Improved discoverability of the corrected article.
    • Enhanced accuracy in scientific literature reviews.
    • Maintained trust and reliability in scholarly publishing.