Client's Personal Reaction Questionnaire

Ashby, Jefferson D.; Ford, Donald H.; Guerney, Bernard G.; Guerney, Louise F.

doi:10.1037/t06916-000

Cited by 3 publications

(3 citation statements)

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“…It is interesting to note that the disturbing acceleration (1) computed for atoms falling in the atom interferometer differs from (2) in the coefficient of the quadratic term by 1 12 γgT 2 . As pointed out by [29], this discrepancy is due to the fact that in the atom interferometer the acceleration of the atoms is measured as a second difference of their positions at times 0, T and 2T when -during their ballistic flight-they are subjected to light pulses (see Sec. 2.1.3 of Peters' PhD thesis [26]).…”

Section: Effects Of Earth's Gradient and Initial Condition Errorsmentioning

confidence: 99%

Fundamental limitations to high-precision tests of the universality of free fall by dropping atoms

Nobili

2016

Phys. Rev. A

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Tests of the universality of free fall and the weak equivalence principle probe the foundations of general relativity. Evidence of a violation may lead to the discovery of a new force. The best torsion balance experiments have ruled it out to 10-13. Cold-atom drop tests have reached 10-7 and promise to do 7 to 10 orders of magnitude better, on the ground or in space. They are limited by the random shot noise, which depends on the number N of atoms in the clouds (as 1/N). As mass-dropping experiments in the nonuniform gravitational field of Earth, they are sensitive to the initial conditions. Random accelerations due to initial condition errors of the clouds are designed to be at the same level as shot noise, so that they can be reduced with the number of drops along with it. This sets the requirements for the initial position and velocity spreads of the clouds with given N. In the STE-QUEST space mission proposal aiming at 2×10-15 they must be about a factor 8 above the limit established by Heisenberg's uncertainty principle, and the integration time required to reduce both errors is 3 years, with a mission duration of 5 years. Instead, offset errors at release between position and velocity of different atom clouds are systematic and give rise to a systematic effect which mimics a violation. Such systematic offsets must be demonstrated to be as small as required in all drops, i.e., they must be kept small by design, and they must be measured. For STE-QUEST to meet its goal they must be several orders of magnitude smaller than the size - in position and velocity space - of each individual cloud, which in its turn must be at most 8 times larger than the uncertainty principle limit. Even if all technical problems are solved and different atom clouds are released with negligible systematic errors, still these errors must be measured; and Heisenberg's principle dictates that such measurement lasts as long as the experiment. While shot noise is random, hence its reduction becomes apparent as more and more drops are performed, the systematic effect due to offset errors at release must be identified through its specific known signature, and measured in order to be distinguished with certainty from the signal. This requires many well designed measurements to be performed - each to the target precision - for it to be ruled out as a source of violation. Ways may be pursued in order to mitigate the limitations identified here

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Section: Effects Of Earth's Gradient and Initial Condition Errorsmentioning

confidence: 99%

Fundamental limitations to high-precision tests of the universality of free fall by dropping atoms

Nobili

2016

Phys. Rev. A

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“…I felt I needed to understand how Aboriginal peoples constructed their worldview. By completing the Cultural Standpoint Questionnaire developed by Rhonda Ashby (n.d.), I became much more aware of the Aboriginal whole-of-life approach to the development of their worldview and their ways (being, knowing, doing, valuing) that governed their lives. Understanding that these ways have been damaged as a consequence of colonialism, I experienced conflicting emotions.…”

Section: Processes In Understanding Self-identity In the Research Setmentioning

confidence: 99%

A Journey Toward Cultural Competence

Nilson

2016

J Transcult Nurs

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This article highlights the personal journey of reflective development that a non-Aboriginal White researcher and health professional underwent to be "fully positioned" in the everyday lives of a rural Australian Aboriginal community in Western Australia. The article explains the researcher's personal development in areas important to building respect, building relationships, and ensuring reciprocity while undertaking Aboriginal research. The researcher reports on the reflective evaluation of her worldview. Understanding that judgment is a natural tendency, the researcher used reflexivity as a tool to examine and contextualize her judgments, presumptions, and preconceptions, which positioned her to be open to differing viewpoints and actively explore alternate perspectives. The researcher explores her evolutionary understanding that cultural competence is not a destination but a continual journey, and she details her knowledge development regarding the Aboriginal research paradigm, which requires that all the learning, sharing, and growth taking place is reciprocal and engages all parties actively.

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“…Finally, the integration of MPM with the concept of Merit Indices (MI) added sufficient generality to the Ashby approach, which can be considered as the most complete and useful to date. Although developed as an educational tool 4 it can also be applied to industrial situations. This paper attempts to review the MS basic methodology, illustrating it with two original case studies, one essentially technical in the engineering sense, the other chosen in such a way as to introduce the relationship between material and design in the creative sense.…”

Section: Introductionmentioning

confidence: 99%

Materials selection as an interdisciplinary technical activity: basic methodology and case studies

2000

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The technical activity known as Materials Selection is reviewed in its concepts and methodologies. Objectives and strategies are briefly presented and two important features are introduced and discussed; (i) Merit Indices: a combination of materials properties, which maximises the objectives chosen by the designer and (ii) Materials Properties Maps: a bi-dimensional space whose coordinates are pairs of properties in which materials can be plotted and compared directly in terms of their merit indices. A general strategy for the deduction of these indices is explained and a formal methodology to establish a ranking of candidate materials when multiple constraints intervene is presented. Finally, two case studies are discussed in depth, one related to materials substitution in the context of mechanical design and a less conventional case linking material selection to physical comfort in the home furniture industry.

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Client's Personal Reaction Questionnaire

Cited by 3 publications

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Fundamental limitations to high-precision tests of the universality of free fall by dropping atoms

Fundamental limitations to high-precision tests of the universality of free fall by dropping atoms

A Journey Toward Cultural Competence

Materials selection as an interdisciplinary technical activity: basic methodology and case studies

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