Sentences with phrase «models make assumptions»

Climate models make assumptions that we know to be false, and yet we continue to use them.

Climate models make assumptions that we know to be false, and yet we continue to use them.

Thereby, the model makes no assumptions about how new alleles have been evolved, whether by drift or natural selection.

Still, he points out that the models make the assumption that melting rates will increase in the near future and that, while this is likely, it is not necessarily a given.

Past research relying on either cross-sectional or main effect models makes the assumption that low levels of perceived control will uniformly and consistently predict higher levels of depressive symptoms without taking into account contextual and environmental factors such as stress (see Alloy et al. 1988).

Not exact matches

A solid plan needs a complete financial model and clear assumptions: how much money is needed, where investments will be made and where the money will get you.

It is essential that the right financial model be used and that correct assumptions be made in forecasting the anticipated benefits, costs and returns of the new value proposition being considered.

The other heroic assumption made by standard models is that the central bank responds instantly a shock hits, and the economy responds instantly to the central bank's response.

The simple second year textbook Mundell - Fleming ISLMBP model under flexible exchange rates makes two assumptions that we need to modify:

This retrospective summarizes key models that make psychology - based assumptions about: individual preferences; individual beliefs; and, the process by which individuals make decisions.

Obsolescence is hard to model and can make a mockery of the detailed financial assumptions underlying buyouts.

«The thing about mathematical modelling is that in order to make problems tractable, you need to make assumptions.

You'd probably have to come up with a statistical model that estimates what the fluctuations should be given some basic assumptions on how people will buy to make a conclusive argument that there is something fishy here.

The assumptions that we make in running our models inject uncertainty throughout the policy - making process.

We build up a simplified model of reality by making assumptions about how the world works, and then we try to assume everything away apart from that specific issue we are focusing on.

«The assumptions often made are that Scripture should have no tensions and that any such tensions are not real but introduced from the outside, namely, by scholarship hostile to Christianity... It is a great irony that both the critical and evangelical options (as distinct from the Jewish model) take part in the same assumption: God's word and diversity at the level of factual content and theological messages are incompatible.»

The training we receive in the scientific method and model construction habituates us to making certain assumptions about who we are and how we relate to nature.

Models that try to explain how life can come from non-life, and models that try to explain how something can come from nothing... THOSE kinds of models where un-observable assumptions must be inserted into the math to make itModels that try to explain how life can come from non-life, and models that try to explain how something can come from nothing... THOSE kinds of models where un-observable assumptions must be inserted into the math to make itmodels that try to explain how something can come from nothing... THOSE kinds of models where un-observable assumptions must be inserted into the math to make itmodels where un-observable assumptions must be inserted into the math to make it work.

As with most political science models, the Nomination Game is a tool for helping us think, but makes some assumptions that might not play out in the real world.

These developments could also significantly affect the assumptions about the nature and extent of travel growth Government makes in transport models and appraisal.

It can capture the radiation precisely enough to measure cosmological quantities without making many theoretical assumptions, detect the rippling of gravitational waves and test various models of the inflation thought to have occurred during the big bang.

Many of these simulations show an association between forest cover and rainfall, but every model is different and makes different assumptions.

Because 2 - D models make simplified assumptions about some aspects of the flow, they can't account for changes in the flow, such as when the flood wave moves around large obstacles, changes rapidly in direction, or fully immerses bridge decks.

The models rely on a long list of assumptions, making it difficult to know which one of them (if any) corresponds to the real world.

Most model scenarios make a big assumption: that rising agricultural productivity and vegetable - based diets will limit the need for new farmland.

Ab initio calculations mean that researchers start with no assumptions in their mathematical models, making a simulation more computationally expensive but also more accurate.

The researchers found that by making tweaks to specific assumptions in the model, they could effectively force the model to make predictions that supported one government spending camp or the other — even if they used the exact same data.

MOND researchers had tried to do this before, but for their models to work, they had to make an untested assumption about the relationship between a star's mass and the amount of light it puts out.

I retrieved data on multiple species from various research sites, and through comparative analyses of these data I explored trends and made assumptions that allowed me to sketch out various ecological interaction models.

Here, we made the assumption of conditional independence for two reasons: (1) since our AN model had no correlated noise source, we wished to put the decoders from the three locations on an equal footing; (2) more importantly, ignoring noise correlations rendered inference far more tractable.

If astronomers made the assumption that velocities observed for Milky Way stars or nebulae were due primarily to the rotation of the Milky Way and that the Milky Way had a simple rotation model, then they could use this model to determine two possible distances for each star or nebula.

Using a new class of mathematical models that do not make many assumptions about how behavior is organized, we will deconstruct the mouse's normal behavior into motifs, or syllables, and correlate those with brain activity.

On the limited information available to me, they seem quite promising — but it certainly would have been helpful in making judgments on this point if the IPCC had modelled a low - medium population projection (as in the A1 and B1 scenarios) which made more moderate assumptions about growth in output and energy use.

In Figure 1, I use the NCAR radiation model, and don't make any assumption about the apparent sky emittance.

Your statement on mistaken assumption # 5 about climate model projections being theoretically based rather than empirically based is well made.

In conclusion, any model that does not make use of appropriate assumptions or real - world data will be of limited use.

«Climate models can easily make assumptions about reductions in future greenhouse gas emissions and project the implications, but they do this with no rational basis for human responses,» Gross said.

Differences in projections of warming by the end of the century appear to be related to assumptions made on emission trajectories and the ambitiousness of climate policies beyond 2030 rather than differences in methodology or climate modeling.

If we only make the physical assumption that the changes in expression level is smooth, and we knew the fine grained differentiation state, but no further assumptions, we can model the expression patterns using Gaussian Processes.

The core assumption that eHarmony makes when using models based on data from married couples is that you can generalize their «fit» to data collected from singles.

When we look to test - based evidence — and look no further — to decide whether choice «works,» we are making two rather extraordinary, unquestioned assumptions: that the sole purpose of schooling is to raise test scores, and that district schools have a place of privilege against which all other models must justify themselves.

Too many leaders «have a deficit model» in which they «make the assumption that the community has nothing to offer the school improvement process,» she says.

The right way involves breaking through assumptions, modeling excellent practice, using feedback, creating a culture of practice, making new skills stick, and hiring for practice.

I set up a factor model that, under certain assumptions, makes this feasible.

It's a model that seems certain to make us question assumptions about how we organize classrooms and schools.

But different value - added models make different assumptions about how much variation in test scores should be attributed to teachers.

While these assumptions have an attractive ring to them, they rest on shaky ground, at best; the evidence to date suggests that few principals have made the time and demonstrated the ability to provide high quality instructional feedback to teachers.17 Importantly, the few well - developed models of instructional leadership posit a set of responsibilities for principals that go well beyond observing and intervening in classrooms — responsibilities touching on vision, organizational culture, and the like.18

Analogous assumptions were made for vehicles purchased in each following model year.

Rather than feeling like authors are being left out of BitTorrent's model, it's a safer assumption that authors have enjoyed this level of freedom and control — quite successfully — for years; now it's time for other avenues of art to experience the say ability to generate content and make it available without having to seek the approval of an established go - between.

My goal is to help you understand some of the assumptions I've made about the publishing process (which follows a traditional model), as well as where you can save time and expense.