Sentences with phrase «measurements have limitations»
Yet, like bottom - up tools, top - down measurements have limitations.
https://www.edf.org/ Not exact matches
The general literature on continuity notes that a lack of clarity in definition and measurement of different types of continuity has been one of the limitations in research in this field (Haggerty 2003).
The authors point out that the literature has a number of methodological limitations, such as measurement and selection bias, and a restricted focus, in which the effects of a limited number of alcohol policies are considered without accounting for other alcohol policies.
The problem is that even today's sophisticated telescopes have technical limitations that can lead to measurement errors.
The study, led by Arnold School exercise scientist and epidemiologist Edward Archer, has demonstrated significant limitations in the measurement protocols used in the National Health and Nutrition Examination Survey (NHANES).
Dark lightning has remained a perplexing phenomenon due to scientific limitations and a dearth of measurements, Østgaard explained.
Single molecule (SM) techniques have greatly developed over the past thirty years to respond to the need of overcoming some of the limitations of traditional, bulk solution measurements.
However, these approaches have significant drawbacks, including inconsistency; limitations in the number of simultaneous labels because of spectral overlap; and necessary pertur - bations of the experiment, such as fixing the cells, to generate the measurement.
The authors also say that limitations in their research — like the fact that BMI and waist measurements were only collected once, rather than several times over the course of the study — may have skewed the results.
Potassium - Argon Dating I Limitations of the If you read further in my second potassium - argon dating page: K - Ar - dating page 2 You will see that Ar dating method can overcome these limitations of conventional k - ar dating, and has the added advantage that potassium and argon are determined on the same sample and that only measurements of the isotopic ratios of argon are required.
Ar dating method can overcome these limitations of conventional k - ar dating, and has the added advantage that potassium and argon are determined on the same sample and that only measurements of the isotopic ratios of argon are required.
The relationship between poverty and indicators of achievement has long been a limitation of measurement in education.
These policies have been implemented despite the objections from many in the measurement community regarding the limitations of available tests and the challenge of accurately attributing student learning to individual teachers.
Mathematical Intimidation: Our society tends to value «hard» data — data based on numerical measurements — over «soft» data — data based on observation and other methods — even though both kinds of data have limitations.
Precise measurements of longevity risk are still unattainable because the limitations of medicine and its impact on life expectancies has not been quantified.
Rob, David — Notwithstanding the limitations in the precision of isotopic measurements, no source sufficient to explain the increasing CO2 trend has been identified that produces the observed: (1) decreasing O2 / N2 (2) decreasing 14C / 12C (3) decreasing 13C / 12C (4) increasing pH of the oceans
When the variables are the values of experimental measurements they have uncertainties due to measurement limitations (e.g., instrument precision) which propagate to the combination of variables in the function.
On the very limited scales that such analyses have been performed, due to limitations of bona fide measurements, the cross-spectral results militate strongly against any very intimate physical relationship in any frequency range.
One limitation for improving surface fluxes at all latitudes is that they have not yet been classified as essential climate variables (ECVs) or essential ocean variables (EOVs) for use by the United Nations or the Intergovernmental Panel on Climate Change, meaning that specific measurement standards have not been established for minimum spatial and temporal density of observations, accuracy, and long - term stability.
Given the data limitations it is concluded that using radiosondes to validate multidecadal - scale trends in MSU data, or vice versa, or trying to use such metrics alone to pick a «winner» is an ill - conditioned approach and has limited utility without one or more of additional independent measurements, or methodological, or physical analysis.»
Because satellite measurements have significant limitations, as the NAS report discussed in detail.
However, for those of us in the real world, all measurements have errors and limitations, and we have to adapt for these.
In addition to observation by another, objective measurement methods can be used, such as accelerometers to record physical activity.77 However, these also have limitations for assessing adherence, especially longer term or with large clinical groups, as the devices are expensive and require the participant to adhere to wearing them.
Despite the above limitations, the contribution of the present study is that we have provided strong evidence for the construct validity, measurement invariance across gender, reliability and convergent / discriminant validity of the MLQ, Greek version.