By extending
the coherence time of electron states to over half a second, a team of scientists from Berkeley Lab, UC Berkeley, and Harvard University has vastly improved the performance of one of the most potent possible sensors of magnetic fields on the nanoscale — a diamond defect no bigger than a pair of atoms, called a nitrogen vacancy (NV) center.
Steger et al. (p. 1280) demonstrate that the nuclear spins of 31P impurities in an almost isotopically pure sample of 28Si can have
a coherence time of as long as 192 seconds at a temperature of ∼ 1.7 K.
Not exact matches
They're doing it with a clear, narrow sense
of purpose, a sublime customer experience, and the kind
of coherence that seems all but impossible when a company gets old and big, and its founding idea lost to
time and well - intended meddling.
It is our duty as Americans to know and appreciate the systems
of belief — the mythic cosmologies, the scientific laws, the common - sense attitudes — that in
times past have served to give
coherence and purpose to our life together.
Newman's narrative — written in answer to Charles Kingsley's accusation
of dishonesty — was compelling in its honesty and
coherence, at
times painfully so.
The usual assertions are (1) that this kind
of religion is today on the defensive; (2) that the defensive posture is occasioned by the flourishing
of «conservative churches» (although the alleged liberal enervation is also seen in more autonomous terms); (3) that the growth in religious conservatism and conservative churches is itself the result
of widespread reaction against «secular humanist» values and against those who hold such values; (4) that our society as a whole has been experiencing a breakdown in moral consensus, a loss
of moral
coherence somehow connected with a decline in oldline Protestant dominance; and (5) that some or all
of these happenings have been quite sudden, so that the early 1960s can be taken as a kind
of benchmark — as a
time before the fall.
Whitehead protests that while one may choose to use such a notion as a helpful abstraction, one can treat such absolute
time as an actuality equal to all other actualities only at the expense
of coherence.
But if you have the Story firmly in your head, with a good grasp
of various biblical ways
of telling it, what you teach by opportunity will, over
time, exhibit a visible
coherence that it wouldn't otherwise have.
So that,
Time acting on Space and incorporating it within itself, the two together constitute a single progression in which Space represents a momentary section
of the flow which is endowed with depth and
coherence by
Time.
Families can be understood in how they handle universal concerns
of control, power and intimacy — that is how well they maintain
coherence and structure, have a sense
of who is in charge
of what and at what
time, and provide members with feelings
of connection trust and support.
Whitehead himself, unlike Hartshorne and Ogden, repudiates the deductive method and the demonstrative claims
of classical rationalism and, rather, attempts to arrive at a metaphysical system that will bring a consistent meaning and
coherence to the critical ideas, mostly scientific,
of his own
time and world.
«8 At the same
time, religion is itself always interested in the universal, because the generalities
of philosophy give some
coherence to the particularities
of emotion and feeling that belong to the data
of religion.
Then again, what does it say about the
coherence of those intentions when, by Hamburger's own account, at least three
of our first seven presidents, including an influential drafter
of the Constitution and the author
of the Declaration
of Independence, seem to have held separationist views outside the mainstream
of their
time?
Sir Michael Scholar, the chairman
of the UK Statistics Authority at the
time, responded to Mr Raynsford's letter in January: «Looking at statistics on housing, house building and house prices more generally, the Statistics Authority has been concerned for some
time that there is a lack
of coherence and clarity in their public presentation.»
Using first - principles quantum theory, the JQI team has explored the
time evolution
of a Ps BEC containing various mixtures
of spin - 0 and spin - 1 Ps atoms, and has found that there is a critical density
of Ps, above which collision processes quickly destroy the internal
coherence of the gas.
In diamond at room temperature, Maurer et al. (p. 1283) show that a spin - based qubit system comprised
of an isotopic impurity (13C) in the vicinity
of a color defect (a nitrogen - vacancy center) could be manipulated to have a
coherence time exceeding one second.
The number
of research structures, agencies, and partnerships has reached an all -
time high; the complexity, lack
of coherence, and redundancies that result are a burden on French researchers and make the system opaque to the private sector and foreigners.
Compared with Ye's previous 1 - D clocks, the new 3 - D quantum gas clock can reach the same level
of precision more than 20
times faster due to the large number
of atoms and longer
coherence times.
«Also, we could reach the ideal condition
of running the clock with its full
coherence time, which refers to how long a series
of ticks can remain stable.
The study enrolled 100 patients with de novo coronary lesions 2.25 - 3.50 mm in diameter and length ≤ 27 mm in two 50 - patient cohorts for angiographic, intravascular ultrasound, and clinical assessment at nine or 24 months, with optical
coherence tomography (OCT) performed in a subset
of 30 patients at multiple
time periods.
Electron spins in silicon quantum dots are attractive systems for quantum computing owing to their long
coherence times and the promise
of rapid scaling
of the number
of dots in a system using semiconductor fabrication techniques.
Complementary vision metrics will include automated visual fields, optical
coherence tomography, and color and contrast sensitivity, in addition to quality
of life scales, bio ‑ dissemination and the
time course
of immune response.
Since 2012, when the first qubits that relied on electron spins were reported, the introduction
of isotopically purified 28Si has led to significant enhancement
of the spin
coherence time.
The 29Si isotope is present at 4.67 percent in natural silicon and is the only stable isotope
of silicon that carries a nuclear spin limiting the qubit
coherence time.
The Sagittarius Dwarf is believed to already have orbited the Milky Way about 10
times in the last billion years or so, and it still appears to have
coherence as an elongated ellipse despite being torn apart by enormous tidal forces as a result
of the interaction.
Functional brain connectivity can be estimated in a variety
of ways, for example through computing cross-correlations in the
time or frequency domain, mutual information or spectral
coherence.
With improvements
of coherence times by over 5 order
of magnitude, it is now possible to implement simple quantum algorithms with these circuits.
To supplement We - Consent, the Institute for the Study
of Coherence and Engagement also developed an app called I've - Been - Violated, which will be renamed Guardrail some
time this year.
With its crowded field
of producers (including Rashida Jones), Claws has a difficult
time with
coherence, feeling like a half - hour show that learned way too late that it was going to be a one - hour show.
Without the philosophical message, what's left
of Pulse is much like the humans in the movie after their essence is extracted — it's a lifeless shell
of its former self that loses
coherence and reason as
time goes on before finally disintegrating into nothingness.
Coherence is a new entrant to the genre from first
time feature director James Ward Byrkit, a protege
of Gore Verbinski.
Amy Adams — Arrival Consider the degree
of difficulty that Adams makes look easy: the believability and
coherence of Arrival «s
time - shifting twist (which only plays better on a second viewing).
This is not a difficult story to tell, no matter how many
times the screenplay (based on a «controversial» book by Ranulph Fiennes — controversial due to wide speculation that it was not, as the movie states, based on a true story) zigzag from country to country, but in the hands
of first -
time director Gary McKendry (who wrote the script with Matt Sherring), Killer Elite struggles to accomplish even basic
coherence.
Other
times, the student may submit a draft
of the essay that the freelancer perfects for grammar, style, and
coherence.
More can also be done to align working conditions
of preschool and primary school teachers; increase flexibility and responsiveness to individual communities, families, and children while at the same
time strengthening
coherence of services; overcome structural and informational roadblocks to co-operation and continuity; and to better facilitate collaboration among staff, managers, parents, and the community based on reciprocal communication, inclusivity, mutual trust, and respect.
As a long -
time member
of the Public Education Leadership Project, a joint initiative between HBS and HGSE, Higgins co-authored a book with her colleagues on managing central office - school relationships called, Achieving
Coherence in District Improvement; this book is based upon their work with large urban districts over a ten - year
time period.
District leaders need to establish clear expectations across multiple dimensions
of improvement activity as the bases for increasing
coherence, coordination, and synergy in the effectiveness
of district improvement efforts over
time.
One
of the signature challenges
of leadership in schools is trying to create that
coherence especially in schools that have been around for a long
time with a really strong tradition
of what we might call radical teacher autonomy: letting every teacher go to their own classroom, go to their own space, and teach and improve however they want.
Three areas
of interest emerge from that research: teacher knowledge, skills and dispositions; professional community (schools as a collective enterprise); and program
coherence (clear learning goals sustained over
time).
This provided clarity and
coherence regarding what are, at
times, seen as competing initiatives, yet are actually integral pieces
of the district's larger goal to become Future Ready.
For starters, leaders
of these schools focus relentlessly on improving the quality, consistency, and
coherence of instruction, and have the
time and resources to make real improvement possible.
In contrast to excessive numbers
of unrelated, unsustained improvement initiatives in a school, instructional
coherence contributes to learning by connecting students» experiences and building on them over
time.
In these settings, teachers have retained — or, in some cases, have discovered for the first
time — the essential frameworks
of the disciplines and the
coherence, understanding, purpose, and joy in learning.
Over the last two years, as I have tried to tease out the truths from the untruths in that series
of events that seeped out through Elizabeth's death, like lava moving upwards and outwards through salt water from a tear in the seabed, I have had to be you several
times, Cameron Brown, in order to claw myself towards some kind
of coherence.
What makes Fiasco stand out from the crowd
of recently published books about the current situation in Iraq is the comprehensiveness and
coherence of Ricks's reporting, and the dozens
of military sources he cites (many going on the record for the first
time) backed up by the thousands
of pages
of internal documents - Ricks says he read over 30,000 pages
of documents, including diaries, unit logs, official briefings, email correspondence and US military documents.
What makes Fiasco stand out from the crowd
of recently published books about the current situation is the comprehensiveness and
coherence of Ricks's reporting, and the dozens
of military sources he cites (many going on the record for the first
time) backed up by the thousands
of pages
of internal documents - Ricks says he read over 30,000 pages
of documents, including diaries, unit logs, official briefings, email correspondence and US military documents.
Luckily, I had registered ahead
of time for a panel that went almost unnoticed thanks to poor programming; by Saturday morning, most
of the trade visitors had either left or were too exhausted to reflect on the state
of the industry with any wit or
coherence.
Optical
coherence tomography (OCT) is an emerging diagnostic imaging tool that uses light waves to generate real -
time, high - resolution images
of tissue at a microscopic level.
It also saps the
coherence of the game's fiction: a colossal Stoneguard Defender shouldn't move three
times as fast as your nimble little archer, even if a lot
of his friends are dead.
At this
time, his work was also being recognized in Europe and Mexico; he was included in Documenta IX in 1992 and his solo show Original Re-Runs (aka, A Certain Lack
of Coherence) traveled in Europe throughout 1993 and 1994.