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Related Concept Videos

Margin of Error01:27

Margin of Error

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The margin of error is also called the maximum error of an estimate. The margin of error is the maximum possible or expected difference between the observed sample parameter value and the actual population parameter value. For proportion, it is the maximum difference between the value of sample proportion obtained from the data and the true value of population proportion. As the true value of the population parameter is not known, the margin of error is calculated using the sample statistic.
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Calculating areas within irregular boundaries, such as along rivers or curved roads, is crucial in various fields, including surveying, engineering, and environmental management. Surveyors often begin by creating a traverse, a connected series of straight lines approximating the area's boundary. The coordinates of each traverse point are essential for calculating the enclosed area. The double meridian distance formula is a widely used technique for this purpose. This method utilizes the...
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Homeostasis is the maintenance of a stable internal environment within the body, which is crucial for the proper functioning of cells, tissues, organs, and organ systems. The body has various control mechanisms that work together to regulate various physiological parameters such as temperature, blood pressure, pH balance, and fluid balance, to name a few. These control mechanisms are based on feedback loops that can be either positive or negative.
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Habitat fragmentation describes the division of a more extensive, continuous habitat into smaller, discontinuous areas. Human activities such as land conversion, as well as slower geological processes leading to changes in the physical environment, are the two leading causes of habitat fragmentation. The fragmentation process typically follows the same steps: perforation, dissection, fragmentation, shrinkage, and attrition.
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Capillary beds are networks of tiny blood vessels that play a crucial role in the circulatory system. These beds are where the exchange of gases, nutrients, and waste products occurs between the blood and surrounding tissues. Each capillary bed consists of numerous capillaries, which are the smallest blood vessels in the body, typically only one cell-thick. This thinness allows for the efficient diffusion of substances.
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The concept of the looking-glass self describes how an individual's self-concept is shaped by their perception of how others see them. This psychological theory, first introduced by sociologist Charles Horton Cooley in 1902, posits that self-identity emerges in a social context and is influenced by the judgments—real or imagined—of others.Research suggests that individuals frequently overestimate how positively others perceive them. This is particularly evident in physical...
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Related Experiment Video

Updated: Mar 7, 2026

Virtual Hand with Ambiguous Movement between the Self and Other Origin: Sense of Ownership and 'Other-Produced' Agency
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At home in the margins.

Surita Parashar

    Medicine Anthropology Theory
    |February 14, 2017
    PubMed
    Summary

    This photo essay explores the meaning of home for individuals experiencing homelessness and living with human immunodeficiency virus (HIV) in Vancouver. Community researchers used Photovoice to capture their lived experiences and perceptions of home.

    Area of Science:

    • Community-based participatory research
    • Qualitative health research
    • Social determinants of health

    Background:

    • Homelessness and HIV disproportionately affect marginalized urban populations.
    • Understanding the concept of 'home' is crucial for health and well-being among vulnerable groups.
    • Vancouver's Downtown Eastside faces complex social and health challenges.

    Purpose of the Study:

    • To explore the multifaceted concept of 'home' from the perspective of individuals with HIV and a history of homelessness.
    • To utilize community-based methods to capture lived experiences of home and neighborhood.
    • To provide insights into the social and environmental factors influencing the sense of home.

    Main Methods:

    • Photovoice methodology employed with eight community researchers (four men, four women) living with HIV.
    Keywords:
    HIV and AIDSPhotovoicehomelessnessmarginalized populationsparticipatory action research

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  • Four-week training in Photovoice methods for community researchers.
  • Participants used disposable cameras to photograph their homes and neighborhoods.

    • Main Results:

    • Photographs and narratives revealed diverse and often non-traditional definitions of 'home'.
    • Themes included safety, belonging, community, and personal space as key components of home.
    • Neighborhood context significantly influenced perceptions and experiences of home.

    Conclusions:

    • The study highlights the resilience and agency of individuals experiencing homelessness and HIV.
    • Photovoice effectively captured nuanced perspectives on home, challenging conventional understandings.
    • Findings can inform targeted interventions and support services for this population.