Given the small
size of the effects for each individual student, even a slight bit of selection bias could dramatically alter the estimated benefits of an individual teacher.
Not exact matches
For example, Warshay worked with a pair
of entrepreneurs who spent time in the prenatal vitamin section at Whole Foods, where they discovered women didn't like the large
size of vitamin pills and potential side
effects of nausea and constipation.
Zhang agrees that such a benefit is possible
for hog producers, but notes that the
effect of soybean tariffs could still be catastrophic
for the larger agricultural industry, given the
size of the Chinese soybean market.
I then adjust the rates to control
for the
effect of changes in rocket warhead
sizes from one conflict to another.
They identify idiosyncratic volatility shocks as large deviations from the volatility predicted out -
of - sample by a regression model that accounts
for market,
size and book - to - market
effects.
Individuals in the top 10 %
of past performers earn average abnormal (adjusted
for size and momentum
effects) monthly returns starting at 7.85 % after one month and falling gradually to 5.20 % after 36 months.
Soon after its discovery in 1981, the
size effect reversed
for the balance
of the century in most countries, with smaller stocks underperforming large ones.
By excluding Allergan's recent string
of acquisitions, the new rules would, in
effect, shrink the Irish company's
size, making it impossible
for Pfizer to pass the 60 % test to access its $ 74 billion
of deferred foreign earnings tax - free.
This is because the 9/11 memorial relies not on symbolism but on sheer magnitude
for its
effect — the
size of the footprints, the volume
of water pouring into them, and the number
of names on the panels — as if magnitude alone could endow it with sublimity.
The
effect of denominational
size, we know from other research, can be linked in turn to the
effect of immigration to the United States, to competition among denominations and between Protestants and Catholics
for members, and to the so - called «baby boom» that followed World War IL In other words, in the United States, sectarianism has been associated with demographic expansion in the world system, just as it appears to have been in Europe in earlier centuries.
The figures illustrate the drop in acceptance
of network programs by affiliates beginning in 1976 - 77, and the
effect which this has had on audience
sizes for these programs.
The growing evidence
of the negative health
effects of sugar sweetened drinks has led to calls
for action to limit consumption.1 2 Several options exist, including controls on the marketing
of sugar sweetened drinks, limits on portion
sizes, and taxation.3 In the United Kingdom, the sale
of sugar sweetened drinks in schools and their advertisement during children's television is banned.
Grow More Food Festival, which offers many entertainment options
for Guyanese residents, encourages all
sizes of businesses within the agriculture industry to grow more food, and engages families to plant kitchen gardens and other small - scale gardens to help offset the
effects of higher food prices.
The Office
for National Statistics (ONS) has highlighted the «shrinkflation»
effect — that is household goods manufacturers reducing packaging
sizes while keeping prices the same — being felt across a range
of items in the UK.
The
effect sizes at 4 h
for cumulative urine output compared with still water were 1.04
for full - fat milk, 0.85
for skimmed milk, and 1.09
for ORS (all large
effects), with an
effect size of 0.65
for orange juice (a medium
effect).
One report examined
effect sizes and found that studies sponsored by the food industry reported significantly smaller harmful
effects for the association
of soft drink consumption with energy intake and body weight than those not sponsored by the food industry.
Thus, the rate
of freezing
for plant tissues is extremely important due to the
effect of freezing rate on the
size of ice crystals, cell hydration, and damage to cell walls (Rahman, 1999).
This has the unfortunate side
effect of implying that you can't evaluate a player with reasonable certainty until he has played
for years and you have a large sample
size.
CatBirdBaby has improved the designs
for the original Mei Tais by making the body
of the Mei Tai larger to enable a better wrap - around
effect, and lengthening the supportive straps to create more allowance
for use between people
of different
sizes.
Adjustment
for family history
of asthma, house dust mite allergy, and hay fever did not materially change the
effect sizes for the duration
of exclusive breastfeeding with upper and lower respiratory tract infections.
A prospective, controlled study
of the
effect of breast milk on infection among low birth weight infants was conducted in India in 1981.18 Although the sample
size was small, 62 infants, the study design was a randomized block design in which feeding schedules
for breast milk or formula were randomly allocated within groups
of infants that were determined to be relatively homogeneous with respect to factors predisposing to infection.
A study by Luby and other WUSM researchers showed that a mother's love had a physical
effect on the
size of her child's hippocampus — the area
of the brain responsible
for memory.
In practice it is slightly more complex than this as inflation can reduce the effective
size of a debt and you can borrow money to pay off debts to get better interest rates, and
for a whole country the value
of the currency has a significant
effect,
«As evidenced by the State's approval
of our C4E [Contracts
for Excellence] class
size reduction plan every year the law was in
effect, we've remained committed to minimizing the growth
of class
size in all
of our schools.»
Because these patterns have a fixed
size, they can be used to determine the distance
of objects and probe the expansion
of the universe
for the
effects of dark energy.
Scientists have looked
for the gravitational
effects of unidentified, star -
sized objects, which could be made either
of normal matter or dark matter, known as massive compact halo objects, or MACHOs.
Over the last 50 years, neuroscience has seen an «increase in research flexibility and the complexity
of study designs combined with the stability
of sample
size and search
for increasingly subtle
effects,» the article's authors write.
«Our modeling results suggest that the physical aspects
of the kelp — its sheer
size and its presence, the shade that it casts, its
effect on flow and the habitat it provides
for predators — affect the reef ecosystem more than its productivity,» Miller said.
For each policy, the literature was reviewed from January 2000 through July 2012 to find evidence
of effectiveness and to create average
effect sizes.
For each policy, literature was reviewed from January 2000 - July 2012 to find evidence
of effectiveness and to create average
effect sizes.
Schwarzkopf suggests that this is because the circuits in the visual cortex responsible
for the illusion are the same
size in everyone, but cover a greater proportion
of a smaller visual cortex, causing a stronger
effect.
Although previous studies
of similar nanoparticles have found an
effect of nanoparticle shape and
size on antibody responses, such a trend was not seen at significant levels
for the DENV2 - E vaccine.
To test
for the
effect, the CVX team sent up 0.37 fluid ounces (11 milliliters)
of xenon sealed in a vessel that contained a thumbnail -
size nickel mesh capable
of vibrating at a range
of amplitudes [see image].
The pituitary gland at the base
of the brain — which releases a wide range
of hormones, including some responsible
for regulating reproduction — showed the opposite
effect, apparently increasing in
size during pregnancy.
Harry Potter also appeared to encourage opposition to punitive policies — gauged by responses to questions about the use
of torture, killing terrorists, and support
for the death penalty — though the
effect size was small.
For the particles to have an
effect, the impact must be extremely intense, such as that caused by a firearm or micrometeorites (objects the
size of grains
of sand capable
of hitting satellites at the speed
of ten kilometres per second).
Researchers at Columbia Business School have found that, despite their
size, mobile ads can have a big
effect on consumers who are in the market
for certain types
of products.
Lead author Professor Marian Rizov from Lincoln International Business School at the University
of Lincoln, said: «Our findings offer compelling evidence that increasing wages
for the lowest paid workers improves productivity, and that this
effect applies in companies
of all
sizes and across most low - paying sectors.
Statistical modeling
of the results revealed that, on average, patients experienced significantly reduced scores
for the active treatment, though the
size of the
effect in individual patients varied.
Further adjustment
for parity did not alter the direction or
size of the
effect.
The phenomenon, known as Warburg
effect, is typical
for cancer cells and the mechanism behind is believed to benefit cancer cells by switching biochemical engines from energy manufacturing reactions to anabolic reactions, which primarily support growth
of the cell
size and proliferation.
While the researchers stress that no current or planned wind farm approaches the
size or concentration that would cause the slowdown
effect, their results suggest the phenomenon tied to large wind farms needs to be accounted
for in future planning
of wind energy.
What's more, according to Tim Bates
of the National Oceanic and Atmospheric Administration (NOAA), «there's a very wide range
of sizes [
for aerosol particles], and the
effect that the particle is going to have on climate is going to be very dependent on its
size, which makes it trickier.»
After correcting
for the distorting
effects of the lens, the team were able to accurately measure the
sizes of the radio - emitting regions in the sample
of quasars.
Looking back at previously collected strength data
for olivine, the researchers determined that the discrepancies in those data could be explained by invoking a related
size effect, whereby the strength
of olivine increases with decreasing grain
size of the tested samples.
This demonstrates how a fairly subtle modification
of a regulatory network,
effected by a selector gene, can set off a chain
of events that has powerful ramifications
for morphogen signaling and organ
size.
Markus Jansson - Fröjmark said: «These findings are important because, though the
effect size is small, they suggest that teaching people strategies
for regulating their emotions might help prevent new cases
of insomnia to occur and decrease the risk
of persistent insomnia.»
In the six subjects, we observed significantly shorter latency (Figure 2A) and shorter excess path length
for locations that had been learned during stimulation
of the entorhinal region in blocks 1, 2, and 3, than
for locations that had been learned without stimulation (latency, z = − 2.20, P = 0.03; excess path length, z = − 2.20, P = 0.03;
effect size, [Cohen's] d = 1.74)(Figure 2A and 2C, respectively).
(A) SPM results
for the comparison
of MP vs. placebo on the BPND images from [11C] raclopride in marijuana abusers (MA) and in healthy controls (HC)(Puncorr < 0.005) and group comparisons
for the
effects of MP (ΔBPND)(P < 0.01, cluster
size of 10 voxels).
We corrected the implications
of the
effect that monkey tool use has on shellfish
size for explanations
of reducing shellfish
size elsewhere