Sentences with phrase «at best an approximation»

If we keep in mind the fundamental limitations of data — for example, that test scores are at best an approximation of learning and that context and implementation do matter — we are much more likely to discern reliable findings.

If the Inquiry is to get at the best approximation to truth, it will need to ensure the residents and their families cooperate with it.

Not exact matches

Either way, it's a tricky business, relying on both art and science, and can only be expected to yield an approximation at best.

What has been discovered... is that, on one main point at least (the choice between the three propositions), religion at its best was literally and philosophically right, and theology was but a first approximation, vitiated by ambiguities or inconsistencies.

At the best such a system will remain only an approximation to the general truths which are sought.»

The experiencing subject can never fully become the object of his experience; at best he can achieve successive approximations.

Here is Segal's answer: «Either we must view the beliefs selectively, taking seriously only the one that appeals most to us, convert, and become true believers of that religion» any religion» or we must face the surety that all are, at best, but approximations of what may await us.

It'll show you what happened and give you a decent approximation of how well these chefs all worked at what they did.

It informs us about the global temperature change «in the pipeline» without further change of climate forcings and it defines how much greenhouse gases must be reduced to restore Earth's energy balance, which, at least to a good approximation, must be the requirement for stabilizing global climate.

One criticism leveled at the project is that administrators will see only the very best of what teachers have to offer, not a realistic approximation of what happens in the classroom every day.

At the moment the electric Defender isn't exactly tearing through the Amazon rainforest, but the work it's doing is nevertheless a good approximation of how quite a lot of Defenders are used in real life — at least in terms of speed and duration of usAt the moment the electric Defender isn't exactly tearing through the Amazon rainforest, but the work it's doing is nevertheless a good approximation of how quite a lot of Defenders are used in real life — at least in terms of speed and duration of usat least in terms of speed and duration of use.

The exact number per year for the last 200 years is unknown, but Heald and his assistants were able to arrive at a pretty good approximation by relying on the number of titles available for each year in WorldCat, a library catalog that contains the complete listings of 72,000 libraries around the world.

This is an excellent approximation and it works exceedingly well AT THE 90 % CONFIDENCE LEVEL (two - sided, 95 % one - sided confidence level).

But if you want an entirely free score that provides a good approximation as well as provides you credit monitoring and much more then take a look at Credit Karma.

It's not to say that MTM accounting is perfect — all accounting methods are approximations and are imperfect, but does it convey the best information needed for investors to make reasonable decisions, at an acceptable cost?

Here is the TIPS - Dividend Approximation: At high levels of safety, a dividend strategy is better than a high stock strategy if it can provide an initial yield of 2.5 % to 3.0 % and grow enough to keep up with inflation.

If he is to pay some special attention to the selection of his portfolio, it might be best for him to concentrate on issues selling at reasonably close approximations to their tangible asset value — say, at not more than one - third above that figure.»

If Einstein ever did look at the rule of 72, he would have noticed that the approximation is pretty good between 3 % and 13 %.

* Prices reflect our best approximation of low and high season rates and are subject to change at any time.

The approximation improves with increasing m but it's already pretty good at m = 2

[note1] To a good approximation, the pressure at any given vertical level in the atmosphere is such that it supports the weight of the column of gasses above it.

It is used for dust in the interstellar medium which has continuous opacity as a function of frequency but it is not really gray but rather has lower opacity at lower frequency, Thus a layer which is opaque in up welling emission may be transparent in down welling absorption so that the next layer out sees its own down welling emission canceled by emission from the opposite side in the approximation of complete transparency at the appropriate frequencies for the inner shells.

Actually, though, most of the OLR originates from below the tropopause (can get up around 18 km in the tropics, generally lower)-- with a majority of solar radiation absorbed at the surface, a crude approximation can be made that the area emitting to space is less than 2 * (20/6371) * 100 % ~ = 0.628 % more than the area heated by the sun, so the OLR per unit area should be well within about 0.6 % of the value calculated without the Earth's curvature (I'm guessing it would actually be closer to if not less than 0.3 % different).

and in the approximation that other sources of optical thickness and the Planck function don't vary much over the width of the CO2 band so — or their combination of variations is such — that the baseline spectral flux for no CO2 as well as the value at any given optical thickness from CO2 is approximatly constant over wavlength — or else so that the baseline and other levels of spectral flux for a given additional optical thickness, or at least the differences among them, vary over the band is such that as the band widens, decreasing effect on one side is balanced by increasing effect on the other — but for now I'll just use the simplification of a constant baseline and additional optical thickness effect on spectral flux over the width of the band:

As to your response on chemistry and spectroscopy over at WUWT (no idea what happened to your comment here, it must have been a browser problem, it's not in the comments database here at all)- you cite «valence bond theory, -LSB-...] molecular orbital theory, -LSB-...] crystal field theory, ligand field theory, self - consistent field and X-alpha method» - none of those are based on fundamental physics, they are all phenomenological theories that work quite well for chemists, but they are not directly derived from underlying physical theory except through very rough approximations and analogies.

Look at the Kaufman et al. temperature graph in my article.It shows a couple of slight warmings as well as a slight cooling for LIA but a straight line for 2000 years is a reasonable overall approximation to it.

Pooling all the cross-dated pre-fire stems at a particular site gives a better approximation of maximum time - since - fire in the form of a bell - shaped or skewed - to - left distribution of the number of residual, cross-dated pre-fire stems going back in time from the actual date of fire (figure 5).

At best, IMHO, a first - order approximation to actual conditions.

You need to demonstrate how diffusion is not a good approximation for convection and advection at the global level.

It informs us about the global temperature change «in the pipeline» without further change of climate forcings and it defines how much greenhouse gases must be reduced to restore Earth's energy balance, which, at least to a good approximation, must be the requirement for stabilizing global climate.

The existing unproved theory (s) whic (Due to approximations) admit infinite solutions, and appealing to closure arguments is indeed troublesome at best

However, the effect of waves depends on the wind, and the net result fro measured results for clear days very closely approximates the reflection of P polarized light from smooth water at high sun angles: the «classic» water albedo of 0.06 is a good approximation between 90 degrees and 25 degrees solar angles.

Given that, if one wants freedom of choice and an efficient market, shouldn't one accept a market solution (tax / credit or analogous system based on public costs, applied strategically to minimize paperwork (don't tax residential utility bills — apply upstream instead), applied approximately fairly to both be fair and encourage an efficient market response (don't ignore any significant category, put all sources of the same emission on equal footing; if cap / trade, allow some exchange between CO2 and CH4, etc, based CO2 (eq); include ocean acidification, etc.), allowing some approximation to that standard so as to not get very high costs in dealing with small details and also to address the biggest, most - well understood effects and sources first (put off dealing with the costs and benifits of sulphate aerosols, etc, until later if necessary — but get at high - latitude black carbon right away)?

Surely this very crude approach of mine can only be a first approximation at best.

It is a good approximation of black body radiation from a source at approximately 5880 K.

The good news is (at least from the perspective of science) that the role of carbon dioxide in climate change is very well established — at the theoretical level in terms of quantum physics, at the experimental level in terms of the study of the absorbtion and re-emission of radiation by carbon dioxide, at the numerical level (when equations get a little too complicated — but a good approximation can result from intensive computation by means of our fairly advanced computers), in terms of historical trends going back more than 500,000 years — and countless studies.

The Earth - Moon doesn't orbit the Earth - Moon - Sun barycenter exactly but it is not orbiting the barycenter of the solar sysem either; to some approximation the innermost planets and the sun must wobble around the barycenter together as they are similarly affected by the outermost planets which happen to be more massive as well as more distant and thus dominate in their effects on the barycenter — things should tend to get more complicated when the planets involved are at more similar distances.

The better approximation of the earth described at the top of the article would result in T = 254.8 k (or -18.3 C).