Sentences with phrase «scale change occurs»

The current battle for control of the people involves exploitation of the way normal large - scale change occurs in society.

Not exact matches

Valeri noted that could change, though, as occurred with the first round of quantitative easing, where a massive $ 1.25 trillion purchase of mortgage - backed securities was followed months later by a large - scale purchase of Treasury bonds.

Since that time, change and development have occurred on a different scale.

However, evolutionary theory does not consider such short time scales, but rather developmental changes occurring over millions of years.

«It's all about the time scale over which evolution occurs in relation to the timing of the changes now occurring in the environment, because there are likely to be mismatches,» he said.

If that turns out to be the case, it's likely that temperature changes on the scale of the Eocene to Oligocene could occur — but in the other direction, toward a much warmer climate that could again fundamentally alter living things on Earth.

For those who aren't familiar with it, the «tipping point» is a concept from epidemiology (popularized by the best - selling book by Malcolm Gladwell) that suggests that small changes accumulate innocuously until a critical mass is reached, at which point a large - scale, irreversible change occurs in the system under study.

The change occurred at an astonishing pace: Within a few months, native lizards had begun shifting to higher perches, and over the course of 15 years and 20 generations, their toe pads had become larger, with more sticky scales on their feet.

Such biodiversity loss usually occurs on a large scale, and is due to habitat destruction, invasive species, overexploitation and climate change.

Developing a better understanding of the large - scale mechanical changes that occur over longer distances, specifically the process by which the extracellular matrix is pulled into compact, highly - aligned «bridges,» could eventually form the basis of treatments for related diseases.

«My group had been looking at the early mechanical changes associated with liver fibrosis, which progresses to cirrhosis, but then, by collaborating with Vivek, we started to wonder if these large scale changes in the architecture of the liver could have a mechanical basis and if something similar to what is seen in gels might be occurring in the liver.

He believes that no one has thought of combining the two theories before because it's not an intuitive idea to look at how the effects of changing patterns of ocean circulation, which occur on time scales of thousands of years, would effect global silicate weathering, which in turn controls global climate on time scales of 100s of thousands of years.

It's just amazing that, you know, you could capture that much information and it's interesting in the scientific perspective because what we are finding right now with issues like climate change and conservation is that we really need fine - grained samples from very large geographic areas to really understand the dynamics of species range movements and how fragmentation is occurring and many biogeographic questions, and literally, the only way we can do this is through voluntary networks like this because it would cost billions and billions to send professionals out at that finer scale to understand it.

Glasses have many important industrial applications, yet understanding the changes that occur over the wide range of time and length scales of the glass transition remains a challenge.

The technique, a new development — different from Zewail's Nobel Prize - winning work in femtochemistry, the visual study of chemical processes occurring at femtosecond scales — allowed researchers to observe directly the transitioning atomic configuration of a prototypical phase - change material, germanium telluride (GeTe), when it is hit by a femtosecond laser pulse.

«As Earth continues to warm, it may be approaching a critical climate threshold beyond which rapid and potentially permanent — at least on a human time - scale — changes not anticipated by climate models tuned to modern conditions may occur,» the report says.

«The results of these studies and the genetic tools developed in the course of these studies are helping to dissect how evolution occurs on a contemporary (rather than geological) scale and why some species are more likely to adapt to a rapidly changing world,» said Diane Nacci, a research biologist at EPA and coauthor on both papers.

Studies such as Otto et al. (2012) display how the numerical scale of the simulation numbers allows for clear separation between a climate with lower level of heat - trapping gases (1960s) and the recent period (2000s), such that the 2010 heat wave in western Russia was more likely to occur with the additional warming due to climate change (Figure 3).

Those changes are local, occuring on a different time scale, and if due to direct external forcing would require higher changes in solar radiance than claimed.

A particular challenge for science is the growing evidence that social - ecological interactions across scales can generate regime shifts where profound and abrupt changes can occur in systems ranging from local ecosystems (such as lakes) to large biomes (such as the Arctic); from local communities (such as farming systems) to regional economic sectors (e.g., global fisheries).

«There are many lessons to be learnt and changes to be made that will hopefully stop an outbreak occurring on this scale again, but for me, the most positive message to take from this outbreak is the dedication and courage of the staff who worked in the many Ebola treatment centres in Guinea, Sierra Leone and Liberia.

«Ocean warming, acidification and deoxygenation are essentially irreversible on centennial time scales,» found the Royal Society, a London - based group specializing in scientific research, in a 2011 paper, «[O] nce these changes have occurred, it will take centuries for the ocean to recover.

This relatively new and still emerging way of seeing depends on taking MRI measurements with conventional millimeter - scale resolution, and developing theoretical models to interpret the resulting data in terms of changes occurring at the scale of microns.

An example of work in this testbed is to quantify large - scale cortical dynamics during learning and neuroplasticity induction, as well as changes in cortical dynamics that occur when users directly control brain stimulation using their thoughts.

The big takeaway from this study: While there is uncertainty in projections for changes in the climate indices reviewed here (especially El Niño and La Niña), this study serves to alert us to the fact that the climate impacts that our local coastal communities face are based in large part on changes that occur on both a large, global scale and over the long, decadal term.

If large scale changes in the ocean ecology occur because of acidification the model can not reasonably be expected to capture the effects.

Because meter - scale suboxic zones occur today within the mobile mud belts of tropical river - dominated continental shelves, such as the Amazon Shelf, we hypothesize that sedimentological and hydrological changes during the PETM fostered the development of analogous conditions on the Eastern seaboard of North America.

Deep steric changes occur over time scales of decades or longer and aren't expected to explain the discrepancy over the last 5 years (Antonov 2005).

Climate system inertia also means that, if large - scale climate change is allowed to occur, it will be exceedingly long - lived, lasting for many centuries.

Body composition changes are occurring, they just aren't being reflected on the scale.

There is growing awareness that the profound environmental changes (eg, in diet and other lifestyle conditions) that began with the introduction of agriculture and animal husbandry ≈ 10000 y ago occurred too recently on an evolutionary time scale for the human genome to adapt (2 — 5).

First, even though the Journal aspires to be international and sensitive to context, its highest level of citation counts occurred in its first phase, of what the authors describe as «assumed universality of scaling educational change.»

As an Android engineer, Dianne Hackborn puts it: «For developers, when designing your app to scale up from its phone UI, this mostly means you should pick the break point at which any major change in your layout should occur and let the layout managers take care of all of the sizes in - between.

Although sweeping changes in food habits are unlikely to occur on a national scale in the forseeable future, adoption of a healthier diet can begin in your own family now.

Specifically, they say: «The implication is that, in the absence of efficient, large - scale capture and storage of airborne carbon (emphasis mine), carbon emissions that have already occurred or will occur in the near future result in a commitment to climate change that will be irreversible on timescales of centuries to millennia and longer.»

There are of course other causes for other changes that have occurred, including suspected asteroid impacts, changes in volcanism over the eons which can lead to the buildup or reduction of greenhouse gases over long time scales, etc..

... Polar amplification explains in part why Greenland Ice Sheet and the West Antarctic Ice Sheet appear to be highly sensitive to relatively small increases in CO2 concentration and global mean temperature... Polar amplification occurs if the magnitude of zonally averaged surface temperature change at high latitudes exceeds the globally averaged temperature change, in response to climate forcings and on time scales greater than the annual cycle.

The sentence I just quoted implies pretty strongly that, in the presence of efficient (or for that matter inefficient) large - scale capture and storage of airborne carbon, carbon emissions that have already occurred or will occur in the near future might not result in a commitment to climate change that is irreversible on timescales of centuries to millennia and longer.

MalcolmT says: «Nick @ 20 Previous climate changes occurred over a time scale of hundreds or thousands of years.

Most people worth their salt, (pun intended), know that the 6th Epoch, the Anthropocene, has indeed been ushered in by mankind.Climate changes that before occurred in scales of hundreds of thousands of years are now taking place within decades.The sheer evidence of many, many, unstoppable feedback mechanisms is enormous.

1993 Greenland ice cores suggest that great climate changes (at least on a regional scale) can occur in the space of a single decade.

C is not constant for the dT» / dt equation to apply because heat penetrates through different parts of the climate system (different depths of the ocean in particular) over different time scales (also, if T» is supposed to be at some reference location or the global average at some vertical level, T» at other locations will vary; C will have to be an effective C value, the heat per unit change in the T» at the location (s) where T» occurs)

Those changes are local, occuring on a different time scale, and if due to direct external forcing would require higher changes in solar radiance than claimed.

Unfortunately, the time scale under which all these changes occur is not one to be understood or allows our brains to be wrapped around the concept.

If proved correct, this theory would suggest that relatively small, naturally occurring fluctuations in greenhouse gases are the master variable that has driven global climate change on time scales of ten thousand to one million years.

The primary changes appear to occur ~ 1975, most likely as a result of the retrospective rating process that assigned ratings to tornadoes prior to the near - real - time ratings that began when the [National Weather Service] adopted the F - scale operationally in the mid-1970s, and ~ 2000, for reasons that aren't completely clear, but are likely due to an increased emphasis on examining construction details and policies that changed the nature in how the ratings are created for the strongest tornadoes.

As for exagerating or minimizing the current temperature trend through choice of scale, it really depends on wether or not 1oC is a large change to occur over one century and all evidence suggests that it is.

But even with Obama in office, policy changes in the US will take time, and changes on the necessary scale are far more likely to occur if the EU has set the stage.

But in the free troposphere vertical motion does occur - sustained changes at the boundary layer propagate upwards, horizontal weather systems at the mesoscale generate their own turbulence, and at the largest scales the Hadley cells drive upward and downward motions.

You are correct that regional and average weather changes over various time scales of interest, and that extreme events continue to occur.