165,950 research outputs found
Mcintosh, R A, VX15298
No full textThis record was harvested from a previous catalogue system and will be withdrawn in 2025. Information in this record may be superseded or incomplete. Visit this record in UMA's new catalogue at: https://archives.library.unimelb.edu.au/nodes/view/403547Surname: MCINTOSH. Given Name(s) or Initials: R A. Military Service Number or Last Known Location: VX15298. Missing, Wounded and Prisoner of War Enquiry Card Index Number: 45350.224954
Item: [2016.0049.35840] "Mcintosh, R A, VX15298
Mcintosh, G R, VX14758
No full textThis record was harvested from a previous catalogue system and will be withdrawn in 2025. Information in this record may be superseded or incomplete. Visit this record in UMA's new catalogue at: https://archives.library.unimelb.edu.au/nodes/view/403546Surname: MCINTOSH. Given Name(s) or Initials: G R. Military Service Number or Last Known Location: VX14758. Missing, Wounded and Prisoner of War Enquiry Card Index Number: 45480.224952
Item: [2016.0049.35839] "Mcintosh, G R, VX14758
Mcintosh, C R, QX11810
No full textThis record was harvested from a previous catalogue system and will be withdrawn in 2025. Information in this record may be superseded or incomplete. Visit this record in UMA's new catalogue at: https://archives.library.unimelb.edu.au/nodes/view/403541Surname: MCINTOSH. Given Name(s) or Initials: C R. Military Service Number or Last Known Location: QX11810. Missing, Wounded and Prisoner of War Enquiry Card Index Number: 37533.224942
Item: [2016.0049.35834] "Mcintosh, C R, QX11810
Mcintosh, Keith R J, V84084
No full textThis record was harvested from a previous catalogue system and will be withdrawn in 2025. Information in this record may be superseded or incomplete. Visit this record in UMA's new catalogue at: https://archives.library.unimelb.edu.au/nodes/view/403545Surname: MCINTOSH. Given Name(s) or Initials: KEITH R J. Military Service Number or Last Known Location: V84084. Missing, Wounded and Prisoner of War Enquiry Card Index Number: 16366.224950
Item: [2016.0049.35838] "Mcintosh, Keith R J, V84084
The effect of oxygen starvation on ignition phenomena in a reactive solid containing a hot-spot
No full textIn this paper, we explore the effect of oxygen supply on the conditions necessary to sustain a self-propagating front from a spherical source of heat embedded in a much larger volume of solid. The ignition characteristics for a spherical hot-spot are investigated, where the reaction is limited by oxygen, that is, reactant + oxygen ? product. It is found that over a wide range of realistic oxygen supply levels, constant heating of the solid by the hot-spot results in a self-propagating combustion front above a certain critical hot-spot power; this is clearly an important issue for industries in which hazard prevention is important. The ignition event leading to the formation of this combustion wave involves an extremely sensitive balance between the heat generated by the chemical reaction and the depletion of the reactant. As a result, for small hot-spot radii and infinite oxygen supply, not only is there a critical power above which a self-sustained combustion front is initiated there also exists a power beyond which no front is formed, before a second higher critical power is found. The plot of critical power against hot-spot radius thus takes on a Z-shape appearance. The corresponding shape for the oxygen-limited reaction is qualitatively the same when the ratio of solid thermal diffusion to oxygen mass diffusion (N) is small and we establish critical conditions for the initiation of a self-sustained combustion front in that case. As N gets larger, while still below unity, we show that the Z-shape flattens out. At still larger values of N, the supercritical behaviour becomes increasingly difficult to define and is supplanted by burning that depends more uniformly on power. In other words, the transition from slow burning to complete combustion seen at small values of N for some critical power disappears. Even higher values of N lead to less solid burning at fixed values of power
The effects of heat exchange and fluid production on the ignition of a porous solid
No full textIn this paper we study a system of nonlinear parabolic equations representing the evolution of small perturbations in a modeldescribing the combustion of a porous solid. The novelty of this system rests on allowing the fluid and solid phases to assume different temperatures, as opposed to the well-studied single-temperature model in which heat is assumed to be exchanged at aninfinitely rapid rate. Moreover, the underlying model incorporates fluid creation, as a result of reaction, and this property is inherited by the perturbation system. With respect to important physico-chemical parameters we look for global and blowing-up solutions,both with and without heat loss and fluid production. In this context, blowup can be identified with thermal runaway, from which ignition of the porous solid is inferred (a self-sustaining combustion wave is generated). We then proceed to study the existenceand uniqueness of a particular class of steady states and examine their relationship to the corresponding class of time-dependent problems. This enables us to extend the global-existence results, and to indicate consistency between the time-independent andtime-dependent analyses. In order to better understand the effects of distinct temperatures in each phase, a number of our results are then compared with those of a corresponding single-temperature model.We find that the results coincide in the appropriate limit ofinfinite heat-exchange rate. However, when the heat exchange is finite the blowup results can be altered substantially
Data for: Experimental confirmation of a right-writing rule in literacy development
No full textFull anonymised data and analysis code for the manuscript:
Experimental confirmation of a character-facing bias in literacy development.
McIntosh, RD, Anderson, E, & Henderson, R
Students: McIntosh/Troutman family photograph
No full textA black and white image of African American male and female students posing outside of a college building at Bethune-Cookman University. The men are wearing jackets, pants, and trousers, and the women are wearing dresses and coats. Standing in the back row, left to right: Windsor R. McIntosh, Denise Troutman, Eyvette Troutman, Bernard Troutman, Darrell Troutman. Sitting, left to right: Janice McIntosh, Dennis McIntosh, Juliann McIntosh. The photograph appears to be a family photograph. On the back of the photo is the stamp of the photographer\u27s studio.https://stars.library.ucf.edu/cfm-images/2724/thumbnail.jp
Students: McIntosh/Troutman family photograph
No full textA black and white image of African American male and female students posing outside of a college building at Bethune-Cookman University. The men are wearing jackets, pants, and trousers, and the women are wearing dresses and coats. Standing in the back row, left to right: Windsor R. McIntosh, Denise Troutman, Eyvette Troutman, Bernard Troutman, Darrell Troutman. Sitting, left to right: Janice McIntosh, Dennis McIntosh, Juliann McIntosh. The photograph appears to be a family photograph. On the back of the photo is the stamp of the photographer\u27s studio.https://stars.library.ucf.edu/cfm-images/2723/thumbnail.jp
FMRI evidence of a functional network setting the criteria for withholding a response
No full textThat the left prefrontal cortex has a critical role setting response criteria for numerous tasks has been well established, but gaps remain in our understanding of the brain mechanisms of task-setting. We aimed at (i) testing the involvement of this region in setting the criteria for a non-response and (ii) assessing functional connectivity between this and other brain regions involved in task-setting. Fourteen young participants performed a go/nogo task during functional magnetic resonance imaging. The task included two nogo visual stimuli which elicit a high (distractor) or a low (other) tendency to respond, respectively. Two task blocks were examined to assess learning the criteria. First, a multivariate Partial Least Squares (PLS) analysis identified brain regions that co-varied with task conditions, as expressed by two significant Latent Variables (LVs). One LV distinguished go and nogo stimuli. The other LV identified regions involved in the first block when the criteria not to respond to distractors were established. The left prefrontal region was prominently involved. Second, a left ventrolateral prefrontal area was selected from this LV as a seed region to perform functional connectivity using a multi-block PLS analysis. Results showed a distributed network functionally connected with the seed, including superior medial prefrontal and left superior parietal regions. These findings extend our understanding of task-setting along the following dimensions: 1) even when a task requires withholding a response, the left prefrontal cortex has a critical role in setting criteria, and 2) this region responds to the task demands within a distinctive functional network
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