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Search Results: 1 - 10 of 4106 matches for " Martha Mulvey "
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Sleep Deficiency and Sleep Health Problems in Chinese Adolescents
Victor Kang,Jesus Shao,Kai Zhang,Martha Mulvey
Clinical Medicine Insights: Pediatrics , 2012,
Sleep Deficiency and Sleep Health Problems in Chinese Adolescents
Victor Kang, Jesus Shao, Kai Zhang, Martha Mulvey, Xue Ming and George C. Wagner
Clinical Medicine Insights: Pediatrics , 2012, DOI: 10.4137/CMPed.S8407
Abstract: A survey of sleep schedules, sleep health, and the impact on school performance was conducted in 585 adolescents in a high school in China. A high level of early and circadian-disadvantaged sleep/wake schedules during weekdays was observed. Significantly shorter sleep duration on weekdays was reported (P < 0.0001). Older teenagers slept significantly less than the younger teenagers (P < 0.0001). Complaints of inadequate sleep and sleepiness during weekdays were prevalent. Night awakenings were reported in 32.2% of students. Students with a sleep length of less than 7 hours, complaint of inadequate sleep, or excessive daytime sleepiness during weekdays were more likely to report an adverse effect of poor sleep on performance. The present observations are qualitatively similar to those reported in our study in American adolescents, particularly with respect to Chinese adolescents exhibiting a similar sleep deficiency on weekdays. We concluded that sleep deficiency and sleep health problems were prevalent in the participating adolescents in China, and were perceived to adversely affect school performance.
Multimodal cycles with linear map having exactly one fixed point
Irene Mulvey
International Journal of Mathematics and Mathematical Sciences , 2001, DOI: 10.1155/s0161171201003969
Abstract: We describe a class of cycles that cannot be forced by a cycle whose linear map has exactly one fixed point.
On the structure of the totally ordered set of unimodal cycles
Irene Mulvey
International Journal of Mathematics and Mathematical Sciences , 2001, DOI: 10.1155/s0161171201003350
Abstract: We continue the study of a class of unimodal cycles where each cycle in the class is forced by every unimodal cycle not in the class. For every order, we identify the cycle in the class of that order, which is maximal with respect to the forcing relation.
The History of Miss Jane Pittman
Christopher Mulvey
Transatlantica : Revue d'études Américaines , 2006,
Abstract: This paper explores the ways in which Ernest J. Gaines uses fiction in The Autobiography of Miss Jane Pittman to write a history of the African American from 1861 to 1961. The “Introduction” sets the novel going, but its direction has already been given in the unusual dedication to his grandmother, stepfather and aunt “who did not walk a day in her life but who taught me the importance of standing” (Gaines iv). The significance for Gaines is that what happened a hundred years ago is part of his present-day lived life.The nineteenth-century novel was possessed by history, and white nineteenth-century novelists found their great subject in the war of European nations that was fought between 1799 and 1815. But that was not an American war nor was it an African American war. For Gaines, the war that makes the great turning point of a nation and a people is the American Civil War, fought from 1861 to 1865. It resulted in a moment of history after which life would not be the same. However, one of the main points that Gaines makes about that great turning point in history is that everything changed and nothing changed. And his main fictional device to establish that truth is to tell the history of the hundred years since Emancipation as the story of one woman. Her autobiography becomes an ethno-biography.The continuity forwards from 1861 is given through the life of one woman, but Gaines’s uses another device to provide a continuity backwards from 1861. The young man who wants to get Miss Jane Pittman’s story upsets her with his persistence: “What you want know about Miss Jane for?’ Mary said. ‘I teach history,’ I said. ‘I’m sure her life’s story can help me explain things to my students.’ ‘What’s wrong with them books you already got?’ Mary said. ‘Miss Jane is not in them,’ I said” (Gaines v). Ernest J. Gaines wrote at a time when historians finally began to recognize that they could get no true history of the South if they allowed that history to be written by plantation owners. In the sixties and the seventies, the pre-Civil War slave narratives, so long dismissed as lies and fictions by white Southern historians, began to be read again, and began to tell African Americans another history. Gaines used the then un-mined resources of the slave narratives to provide structure, themes, characters and incidents for his novel. A comparison of The Autobiography of Miss Jane Pittman with the Narrative of William W. Brown, A Fugitive Slave Written by Himself, published in 1847, will show how close these links are. But William Wells Brown’s Narrative is only one of at
Language Patterns and Embedded Suggestions for Motivating Learners
Brian Cullen,Sarah Mulvey
Humanising Language Teaching , 2012, DOI: 17559715
Properties of the Scalar Universal Equations
J. A. Mulvey
Physics , 1995, DOI: 10.1088/0305-4470/29/12/028
Abstract: The variational properties of the scalar so--called ``Universal'' equations are reviewed and generalised. In particular, we note that contrary to earlier claims, each member of the Euler hierarchy may have an explicit field dependence. The Euler hierarchy itself is given a new interpretation in terms of the formal complex of variational calculus, and is shown to be related to the algebra of distinguished symmetries of the first source form.
BiHamiltonian Formulations of the Bateman Equation
J. A. Mulvey
Physics , 1995, DOI: 10.1016/0375-9601(95)00709-C
Abstract: We discuss a class of evolution equations equivalent to the simplest Universal Field Equation, the so--called Bateman equation, and show that all of them possess (at least) biHamiltonian structure. The first few conserved charges are calculated.
A noncommutative theory of Penrose tilings
Christopher J. Mulvey,Pedro Resende
Mathematics , 2003,
Abstract: Considering quantales as generalised noncommutative spaces, we address as an example a quantale Pen based on the Penrose tilings of the plane. We study in general the representations of involutive quantales on those of binary relations, and show that in the case of Pen the algebraically irreducible representations provide a complete classification of the set of Penrose tilings from which its representation as a quotient of Cantor space is recovered.
Toxin-Antitoxin Systems Are Important for Niche-Specific Colonization and Stress Resistance of Uropathogenic Escherichia coli
J. Paul Norton,Matthew A. Mulvey
PLOS Pathogens , 2012, DOI: 10.1371/journal.ppat.1002954
Abstract: Toxin-antitoxin (TA) systems are prevalent in many bacterial genomes and have been implicated in biofilm and persister cell formation, but the contribution of individual chromosomally encoded TA systems during bacterial pathogenesis is not well understood. Of the known TA systems encoded by Escherichia coli, only a subset is associated with strains of extraintestinal pathogenic E. coli (ExPEC). These pathogens colonize diverse niches and are a major cause of sepsis, meningitis, and urinary tract infections. Using a murine infection model, we show that two TA systems (YefM-YoeB and YbaJ-Hha) independently promote colonization of the bladder by the reference uropathogenic ExPEC isolate CFT073, while a third TA system comprised of the toxin PasT and the antitoxin PasI is critical to ExPEC survival within the kidneys. The PasTI TA system also enhances ExPEC persister cell formation in the presence of antibiotics and markedly increases pathogen resistance to nutrient limitation as well as oxidative and nitrosative stresses. On its own, low-level expression of PasT protects ExPEC from these stresses, whereas overexpression of PasT is toxic and causes bacterial stasis. PasT-induced stasis can be rescued by overexpression of PasI, indicating that PasTI is a bona fide TA system. By mutagenesis, we find that the stress resistance and toxic effects of PasT can be uncoupled and mapped to distinct domains. Toxicity was specifically linked to sequences within the N-terminus of PasT, a region that also promotes the development of persister cells. These results indicate discrete, multipurpose functions for a TA-associated toxin and demonstrate that individual TA systems can provide bacteria with pronounced fitness advantages dependent on toxin expression levels and the specific environmental niche occupied.
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