4,965 research outputs found
Butler (D.E.) ed. - Elections abroad. (By) D.E. Butler, Philip M. Williams, Martin Harrison, Zbigniew Pelczynski, Basil Chubb, R.R. Farquharson
No full textRanger Jean. Butler (D.E.) ed. - Elections abroad. (By) D.E. Butler, Philip M. Williams, Martin Harrison, Zbigniew Pelczynski, Basil Chubb, R.R. Farquharson. In: Revue française de science politique, 12ᵉ année, n°4, 1962. p. 996
P-type calcium ATPases in higher plants - biochemical, molecular and functional properties
No full textPlant and animal cells regulate cytosolic free calcium at sub-micromolar concentrations (see 1, 2 for reviews). This is achieved by a combination of active Ca2+ pumps (P-type ATPases) and antiports energised by the primary ion-motive pumps of the cell, together with regulated Ca2+-influx channels. In plants, the primary motive force for the transport of most solutes is provided by trans-membrane proton pumps located at the plasma membrane and vacuolar membrane (tonoplast); this contrasts with the sodium/potassium systems of mammalian cells (for a review, see [1]). Recently, a variety of studies have shown that plant cells contain several types of Ca2+-pumping ATPase, including those possessing a calmodulin-binding autoinhibitory domain and those lacking such a domain 2, 3, 4, 5. Molecular and biochemical evidence indicates similarities, but also key differences (particularly in subcellular locations) between plants and animals, e.g. 2, 3, 4, 5, 6.It is the aim of this review to draw together current molecular and related data indicating the structure, function and location of the various plant Ca2+ pumps and to compare these with their homologues from other organism
Attentional bias for pain- and period-related symptom words in healthy women who experienced a recent painful period
No full textBackground: Attentional biases for pain-related information have been commonly reported in patients with chronic pain. Biases may also exist in individuals who recently experienced an episode of acute clinical pain, although limited investigation has been conducted. The present study is the first to explore attentional biases in women who experienced recent menstrual pain.Methods: Seventy healthy women were recruited who experienced a regular menstrual cycle and a recent painful period. All participants completed a visual-probe task with pain-related and period-related symptom words, which were presented at subliminal (14 ms, followed by nonsensical consonant letter string for 286 ms) and supraliminal (300 ms, 1250 ms) exposure durations. Participants then completed a series of self-report measures, including a measure of cyclical perimenstrual symptoms.Results: Recent menstrual pain severity was found to be significantly predictive of attentional bias towards pain-related words presented for 1250 ms. However, no significant evidence of bias was found towards period-related symptom words.Conclusions: Pain-related attentional biases are associated with recent menstrual pain severity. The experience and severity of pain, rather than its duration (i.e., whether pain is chronic or acute), may be the primary determinants of pain-related attentional bias. Future research could explore attentional biases in acute clinical pain samples to confirm this notion
Williams (Birth, 1908-08-15)
No full textAddress: 434 Richmond St.3765/Pg. 89/1908/F W/Ohio/Tenn./Dr. D.E. WeaverOriginal record filed in drawer labeled 'WILGAMS-WILLIAMS'
Visually guided step descent in children with Williams syndrome
No full textIndividuals with Williams syndrome (WS) have impairments in visuospatial tasks and in manual visuomotor control, consistent with parietal and cerebellar abnormalities. Here we examined whether individuals with WS also have difficulties in visually controlling whole-body movements. We investigated visual control of stepping down at a change of level in children with WS (5–16-year-olds), who descended a single step while their movement was kinematically recorded. On each trial step height was set unpredictably, so that visual information was necessary to perceive the step depth and position the legs appropriately before landing. Kinematic measures established that children with WS did not use visual information to slow the leg at an appropriate point during the step. This pattern contrasts with that observed in typically developing 3- and 4-year-old children, implying severe impairment in whole-body visuomotor control in WS. For children with WS, performance was not significantly predicted by lowlevel visual or balance problems, but improved significantly with verbal age. The results suggest some plasticity and development in WS whole-body control. These data clearly show that visuospatial and visuomotor deficits in WS extend to the locomotor domain. Taken together with evidence for parietal and cerebellar abnormalities in WS, these results also provide new evidence for the role of these circuits in the visual control of whole-body movement
Determination of the photolysis rate coefficient of Monochlorodimethyl Sulfide (MClDMS) in the atmosphere and its implications for the enhancement of SO2 production from the DMS + Cl2 reaction
No full textIn this work, the photolysis rate coefficient of CH3SCH2Cl (MClDMS) in the lower atmosphere has been determined and has been used in a marine boundary layer (MBL) box model to determine the enhancement of SO2 production arising from the reaction DMS + Cl2. Absorption cross sections measured in the 28000-34000 cm(-1) region have been used to determine photolysis rate coefficients of MClDMS in the troposphere at 10 solar zenith angles (SZAs). These have been used to determine the lifetimes of MClDMS in the troposphere. At 0° SZA, a photolysis lifetime of 3-4 h has been obtained. The results show that the photolysis lifetime of MClDMS is significantly smaller than the lifetimes with respect to reaction with OH (?4.6 days) and with Cl atoms (?1.2 days). It has also been shown, using experimentally derived dissociation energies with supporting quantum-chemical calculations, that the dominant photodissocation route of MClDMS is dissociation of the C-S bond to give CH3S and CH2Cl. MBL box modeling calculations show that buildup of MClDMS at night from the Cl2 + DMS reaction leads to enhanced SO2 production during the day. The extra SO2 arises from photolysis of MClDMS to give CH3S and CH2Cl, followed by subsequent oxidation of CH3S
Review of the thesis: “The activities of the Soviet police to combat crime and public protection in Western Siberia in 1925-1937” by D.E. Kuznetsov
No full textThe article analyses the thesis “The activities of the Soviet police to combat crime and protect public order in Western Siberia in 1925-1937” by D.E. Kuznetsov. The structure and logic of the construction of the work, the validity of the conclusions, the merits of the dissertation research and its controversial points are considered. Special attention is paid to the source of the dissertation. In conclusion, the author of the article summaries that the contents of D.E. Kuznetsov's facts, assessments and conclusions can be used to develop textbooks on the history of crime, the history of law enforcement bodies, the history of Russia
Using and evaluating CASE tools : from software engineering to phenomenology
No full textCASE (Computer-Aided Systems Engineering) is a recent addition to the long line of
"silver bullets" that promise to transform information systems development, delivering
new levels of quality and productivity. CASE is particularly intriguing because
information systems (IS) practitioners spend their working lives applying information
technology (IT) to other people's work, and now they are applying it to themselves.
CASE research to date has been dominated by accounts of tool development,
normative writings (for example practitioner success stories) and surveys recording
IT specialists' perceptions. There have been very few in-depth studies of tool use,
and very few attempts to quantify benefits, therefore the essence of the CASE process
remains largely unexplored, and the views of stakeholders other than the IT specialists
have yet to be heard.
The research presented here addresses these concerns by adopting a hybrid research
approach combining action research, grounded theory and phenoinenology and using
both qualitative and quantitative data in order to tell the story of a system developer's
experience in using CASE tools in three information systems projects for a major UK
car manufacturer over a four year period. The author was the lead developer on all
three projects. Action research is a learning process, the researcher is an explorer.
At the start of this project it was assumed that the tools would be the focus of the
work. As the research progressed it became evident that the tools were but part of
a richer organisational context in which culture, politics, history, external initiatives
and cognitive limitations played important roles. The author continued to record
experiences and impressions of tool use in the project diary together with quality and
productivity metrics. But the diary also became home to a story of organisational
developments that had not originally been foreseen.
The principal contribution made by the work is to identity the narrow positivistic
nature of CASE knowledge, and to show via the research stories the overwhelming
importance of organisational context to systems development success and how the
exploration of context is poorly supported by the tools. Sixteen further contributions
are listed in the Conclusions to the thesis, including a major extension to Wynekoop
and Conger's CASE research taxonomy, an identification of the potentially
misleading nature of quantitative IS assessment and further evidence of the limitations
of the "scientific" approach to systems development.
The thesis is completed by two proposals for further work. The first seeks to
advance IS theory by developing further a number of emerging process models of IS
development. The second seeks to advance IS practice by asking the question "How
can CASE tools be used to stimulate awareness and debate about the effects of
organisational context?", and outlines a programme of research in this area
Women\u27s Missionary and Educational Convention Program.
No full textProgram ... May 15-18, 1958, Keystone Heights, Florida. Purchased by D.E. Williams, 9/7/79.https://dh.howard.edu/og_circulars/1044/thumbnail.jp
Latimore, R.M., Rev.
No full textModerator\u27s annual address, Jerusalem Missionary Baptist Association, 1956. Program. Purchased by D.E. Williams, 9/7/79https://dh.howard.edu/og_speeches/1009/thumbnail.jp
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