Self-reported Grades

Self-reported grades are students’ accounts of their own academic marks, used in psychology to measure perceived achievement and examine its links with behavior and educational experiences. They rely on memory and interpretation: students retrieve grades from experience, estimate or report them through a survey or interview, and may shape responses through recall errors, misunderstanding, or self-presentation. Researchers use these reports to study motivation, self-concept, academic stress, and educational outcomes, often comparing them with official records to evaluate accuracy and bias. Clear wording, consistent time frames, and confidentiality can improve data quality while distinguishing perceived achievement from documented performance.

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Education

JoVE Core - Anatomy and Physiology

Graded Potential

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2025

Graded potentials are localized fluctuations in the cell membrane's electrical charge, commonly found in the dendrites of neurons. The magnitude of these potential changes depends on the strength of the initiating stimulus. In a membrane at its resting potential, a graded potential signifies a voltage shift either above -70 mV or below -70 mV. Graded potentials fall into two categories: depolarizing and hyperpolarizing. Depolarizing graded potentials typically occur when sodium (Na+) or calcium...

Types of Aggregate Grading

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2024

Aggregate grading is crucial in economically obtaining a concrete mix with adequate strength, reasonable workability, and minimal segregation. There are four types of aggregate gradation: well-graded, uniformly (or one-sized) graded, gap-graded, and open-graded. Well-graded aggregates include a complete range of necessary size fractions that fit together to create a dense matrix with minimal voids, represented by a smooth, continuous gradation curve. This type of grading ensures good...

Research

JoVE EoE - Neuronal Culture Techniques

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2025

This video showcases a technique for co-culturing glutamatergic neurons and pediatric high-grade glioma (pHGG) cells within a microfluidic device. Human induced pluripotent stem cells are introduced into the microfluidic system and incubated to promote their differentiation into mature cortical glutamatergic neurons. Following this, the pHGG cells are introduced onto the mature neurons, establishing a co-culture and enabling interactions between neurons and pHGG cells.

Sieve Analysis and Grading Curves

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2024

Sieve analysis is a method used to determine the particle size distribution of aggregate materials. This process involves the following steps: The required quantity of dried sample of aggregate is weighed. The weighed aggregates are sieved through a set of sieves with square openings arranged in descending order of aperture size, with the largest mesh on top (Column 1 of Table 1). The stack of sieves is shaken or vibrated to facilitate the sorting of particles by size. After sieving for a...

Data Reporting and Recording

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2023

Reporting and recording are crucial in data documentation. The timely, thorough, and accurate documentation of facts is essential when recording patient data. Failure to record findings during an assessment or interpretation of a problem will result in loss of information and make the patient document unreliable. The reader is left with general impressions if the information is not specific. A recording is documenting data of the individual's health information in a traceable, secure, and...

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