What is the measurement of age？?
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The measurement of age is a complex concept that has been approached from different angles in various fields of study. One perspective is that time is a measurement of aging, where time is not an independent entity but rather an effect of aging . Another approach involves using radioactive dating of materials and stars to determine age, comparing the abundance ratios of radioactive and stable nuclear species . In the study of human lives, age and age structuring are measured through various strategies such as subjective age identification, age norms, and life events . In gerontological research, biological age is measured by observing chronic degenerative changes that can be quantifiably graded . It is important to note that biological age is a statistical entity and cannot be directly observed, but rather inferred from measurable phenomena .
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81 Citations | The paper discusses different approaches to measuring biological age, including actuarial analysis of large populations, assessment of overall morbidity, and observation of chronic degenerative changes that can be measured or graded. |
| The paper discusses the measurement of age, including different types of age, subjective age identification, age norms and expectations, critical life events, life phases, and life review. | |
354 Citations | The measurement of age in the paper is based on the detection of the spectral line of singly ionized uranium at a wavelength of 385.957 nm in the star CS31082-001. The derived uranium abundance from this measurement yields an age of 12.5 +/- 3 Gyr. |
1 Citations | The measurement of age is time, according to the paper. Time is defined as a measurement of aging. |
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What is age?4 answersAge is a complex concept that is defined differently across various contexts and disciplines. It is generally understood as the process of getting old and is associated with changes in physiology and psychology throughout a person's life. The World Health Organization has established age classifications based on specific age ranges, such as young age (25-44 years), middle age (44-60 years), elderly age (60-75 years), and long-livers (after 90 years). Age is also a key axis of social difference and plays a significant role in shaping human experience. Ageism, the discrimination based on age, affects individuals throughout their life course. Age differentiation and age discrimination form the basis for distinctions of age groups, age categories, and generations, which have implications for social justice and intergenerational policies. In the field of face aging research, age classification is based on visible changes in the face and can be achieved through various algorithms and techniques, such as age prototypes, statistical models, and distance-based methods.
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