4,341 research outputs found
Lincoln-IBM meeting on XD-1 equipment needs
No full textPresent: (MIT) S. H. Dodd, R. R. Everett, J. W. Forrester, M. G. Holloway, B. E. Morriss, J. A. O'Brien, C. F. J. Overhage; (IBM) T. A. Burke, R. P. Crago, J. F. Mills, H. D. Ross, G. R. Solomon, R. N. Sweetland, J. E. ZollingerMinutes of a Lincoln-IBM meeting discussing equipment needs in XD-1
Making connections: problems, progress and priorities – a practitioner’s viewpoint
No full textIn this thesis, the reader is invited to ‘think with the story’ (Bochner, 1997) as the issues arising from a research project undertaken by a full-time classroom teacher are explored. The study began with the intention to help children make connections in their learning. Taking an action research approach, over a span of two and a half years, ways to help children link ideas were investigated, their responses observed and their views explored through techniques such as interviews, games and stimulated recall. As the study progressed, it developed a stronger focus on practitioner research, especially in relation to teacher research with children. Following a change of school, the research focused on working with a ‘pupil research group’ over a six-month period. The thesis addresses the learning of the teacher-researcher about the connections and challenges involved, including contextual issues, different methodological strategies, power relationships, different voices and viewpoints in research and the process of change. A narrative approach is used to tell much of the story, in the form of an informal dialogue between the author as a teacher and the author as a researcher. Thus, the common and conflicting demands and benefits of research and teaching in such a project are explored in dynamic fashion. Ultimately, a framework to support practitioner researchers, based on the problems and progress in the study, is presented with some priorities for the future
UNCONSCIOUS ODOUR CONDITIONING 25 YEARS LATER: REVISITING AND EXTENDING 'KIRK-SMITH VAN TOLLER AND DODD'.
No full textThe pioneering work by Kirk-Smith, Van Toller, and Dodd [Kirk-
Smith, M. D., Van Toller, C., & Dodd, G. H. (1983). Unconscious
odour conditioning in human subjects. Biological Psychology, 17,
221–231], established that an unnoticed odorant paired with an
emotionally meaningful task can influence mood and attitudes
when the odorant alone is re-encountered subsequently. This
study was particularly important in highlighting unconscious
odour learning processes as they may happen in everyday life.
However, it was severely criticized by Black and Smith [Black, S.
L., & Smith, D. G. (1994). Has odor conditioning been demonstrated?
A critique of ‘‘Unconscious odour conditioning in human
subjects”. Biological Psychology, 37, 265–267] on methodological
grounds. In the present paper, we replicated and extended Kirk-
Smith et al.’s investigation taking into account Black and Smith’s
criticisms and carrying out additional controls to improve the
validity of the study. The results confirm the initial findings of
Kirk-Smith and colleagues by demonstrating the effectiveness of
olfactory stimuli in inducing conditioned hedonic reactions even
when presented below the level of awareness
EVOLUTION OF R-PLASMIDS BY REPLICON FUSION
No full textThe occurrence of plasmid-plasmid fusions in nature and their possible influence on the spread of bacterial drug resistance is considered. Three ways in which replicon fusions can be formed are described; specifically fusions mediated by IS
elements, "one-ended transposition" systems derived from Tn3 and like transposons, and pUB2380, a prototype for a new type of transposition.Non-transposition based systems which mediate replicon fusion are also briefly considered
Letter from M. H. Dodd, Greenwood, Mississippi, to P. A. Fitts, Tuscaloosa, Alabama, December 20, 1860
No full textInfluence of honey mesquite and its control on zonal vegetation patterns
No full textVita.A study initiated in 1973 explored relationships between honey mesquite (Prosopis glandulosa Torr. var. qlandulosa) and understory vegetation on a deep hardland range site in northcentral Texas. Forage production and secondary succession were monitored on brush control treatments applied in 1973, 1974, and 1976. Treatments included untreated (control), sprays of 2,4,5-T + picloram herbicide, and mechanical treatment (tree grubbing 1973, 1976 and root plowing 1974). Aerial and edaphic environmental factors that influence rate and direction of succession were measured and related to vegetation responses. Cool and warm season plants occupied a canopy zone beneath the untreated honey mesquite. A narrow transitional zone contained sparse stands of vegetation and extended from the canopy dripline into the interstitial areas of the honey mesquite stand. Arizona cottontop (Digitaria californica (Benth.) Henr.) and Texas wintergrass (Stipa leucotrica Trin & Rupr.) (24% and 29% composition, respectively) were major components of the untreated canopy zone. Transition zone vegetation was composed of Texas wintergrass (28%), and buffalograss (Buchloe dactyloides (Nutt.) Engelm.) (46%). Buffalograss was the dominant species of the untreated interstitial zones (77% composition).
Harmonising Basel III and the Dodd Frank Act through international accounting standards: reasons why international accounting standards should serve as “thermostats”
No full textWhy should differences between regulatory and accounting policies be mitigated? Because mitigating such differences could facilitate convergence – as well as financial stability. The paper “Fair Value Accounting and Procyclicality: Mitigating Regulatory and Accounting Policy Differences through Regulatory Structure Reforms and Enforced Self Regulation” illustrates how the implementation of accounting standards and policies, in certain instances, have contrasted with Basel Committee initiatives aimed at mitigating procyclicality and facilitating forward looking provisioning. The paper also highlights how and why differences between regulatory and accounting policies could (and should) be mitigated. This paper focuses on how recent regulatory reforms – with particular reference to the Dodd Frank Act, impact fair value measurements. Other potential implications for accounting measurements and valuation, will also be considered. Given the tendencies for discrepancies to arise between regulatory and accounting policies, and owing to discrepancies between Basel III and the Dodd Frank Act, would a more imposing and commanding role for international standards not serve as a powerful weapon in harmonizing Basel III and Dodd Frank – whilst mitigating regulatory and accounting policy differences?financial stability; OTC derivatives markets; counterparty risks; disclosure; information asymmetry; transparency; living wills; Volcker Rule; Basel III; Basel II; pro cyclicality; international auditing standards; Dodd Frank Act; fair values
Estimating the parameters of globular cluster M 30 (NGC 7099) from time-series photometry
No full textAims. We present the analysis of 26 nights of V and I time-series observations from 2011 and 2012 of the globular cluster M 30 (NGC 7099). We used our data to search for variable stars in this cluster and refine the periods of known variables; we then used our variable star light curves to derive values for the cluster's parameters. Methods. We used difference image analysis to reduce our data to obtain high-precision light curves of variable stars. We then estimated the cluster parameters by performing a Fourier decomposition of the light curves of RR Lyrae stars for which a good period estimate was possible. We also derived an estimate for the age of the cluster by fitting theoretical isochrones to our colour-magnitude diagram (CMD). Results. Out of 13 stars previously catalogued as variables, we find that only 4 are bona fide variables. We detect two new RR Lyrae variables, and confirm two additional RR Lyrae candidates from the literature. We also detect four other new variables, including an eclipsing blue straggler system, and an SX Phoenicis star. This amounts to a total number of confirmed variable stars in M 30 of 12. We perform Fourier decomposition of the light curves of the RR Lyrae stars to derive cluster parameters using empirical relations. We find a cluster metallicity [Fe/H]ZW =-2.01 ± 0.04, or [Fe/H]UVES =-2.11 ± 0.06, and a distance of 8.32 ± 0.20 kpc (using RR0 variables), 8.10 kpc (using one RR1 variable), and 8.35 ± 0.42 kpc (using our SX Phoenicis star detection in M 30). Fitting isochrones to the CMD, we estimate an age of 13.0 ± 1.0 Gyr for M 30. © 2013 ESO
Effects of fire and grazing on Coastal Prairie rangeland and Attwater's prairie chicken habitat
No full textPrescribed burning and systematic grazing management offer strong possibilities for manipulating rangeland vegetation for both wild life and livestock production in the Texas Coastal Prairie. Long-term, total protection of rangeland from fire and grazing can result in low quality prairie chicken habitat. Prescribed burning in such areas has resulted in increased prairie chicken activity, involving feeding, loafing, roosting, booming, and nesting. Prairie chicken responses to burning treatments are believed to be related to changes in vegetation stature, density, and cover; reduction of mulch accumulations; and increased availability of potential food supplies. Desirable prairie chicken habitat also can be maintained through vegetation manipulation with domestic livestock, provided that frequency and intensity of grazing are closely controlled. Prescribed burning can be used to increase intensity of grazing use, as well as to control distribution of grazing. Total herbage yields on ungrazed Coastal Prairie range were greater on prescribed burned areas of all dates (fall, winter, and spring) than on unburned controls. The winter burned areas produced the highest total yield, followed in decreasing order by the spring and fall burned areas. However, on grazed, Coastal Prairie range total herbage yield was greatest on the unburned control, followed closely by the spring and winter burned areas, while the fall burned area produced the least. Sizeable changes occurred in percentage composition and yields of several key species in the plant community during the first year following seasonal burns. However, dominant species retained their relative ranks in the community, and the plant community maintained its identity and seral status in plant succession
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