332 research outputs found
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The type and frequency of interactions that occur between staff and children outside in Early Years Foundation Stage settings during a fixed playtime period when there are tricycles available
This study reports on an investigation into adult and child interactions observed in the outdoor play environment in four Local Authority early years foundation stage settings in England. In this instance the common two features across the settings were the presence of tricycles and a timetabled outdoor play period. In total, across the four schools, there were 204 children. The study aimed to gain an understanding of the nature of the dialogues between staff and children, that is, the types of exchange that occurred when either the child approached an adult or the adult approached a child. The most frequent type of utterance was also analysed. The study concludes that adults in these settings spoke more than children and the greatest type of utterance was that of the adult about domestic matters. When the child initiated the conversation there were more extended child utterances than domestic utterances. This may suggest that children wish to be involved in conversations of depth and meaning and that staff need to become aware of how to develop this conversational language with children
Counting function fluctuations and extreme value threshold in multifractal patterns: the case study of an ideal noise
To understand the sample-to-sample fluctuations in disorder-generated
multifractal patterns we investigate analytically as well as numerically the
statistics of high values of the simplest model - the ideal periodic
Gaussian noise. By employing the thermodynamic formalism we predict the
characteristic scale and the precise scaling form of the distribution of number
of points above a given level. We demonstrate that the powerlaw forward tail of
the probability density, with exponent controlled by the level, results in an
important difference between the mean and the typical values of the counting
function. This can be further used to determine the typical threshold of
extreme values in the pattern which turns out to be given by
with . Such observation provides a
rather compelling explanation of the mechanism behind universality of .
Revealed mechanisms are conjectured to retain their qualitative validity for a
broad class of disorder-generated multifractal fields. In particular, we
predict that the typical value of the maximum of intensity is to be
given by , where is the
corresponding singularity spectrum vanishing at . For the
noise we also derive exact as well as well-controlled approximate
formulas for the mean and the variance of the counting function without
recourse to the thermodynamic formalism.Comment: 28 pages; 7 figures, published version with a few misprints
corrected, editing done and references adde
Using [C II] 158 μm Emission from Isolated ISM Phases as a Star Formation Rate Indicator
The brightest observed emission line in many star-forming galaxies is the [C II] 158 μm line, making it detectable up to z ~ 7. In order to better understand and quantify the [C II] emission as a tracer of star formation, the theoretical ratio between the [N II] 205 μm emission and the [C II] 158 μm emission has been employed to empirically determine the fraction of [C II] emission that originates from the ionized and neutral phases of the interstellar medium (ISM). Sub-kiloparsec measurements of the [C II] 158 μm and [N II] 205 μm lines in nearby galaxies have recently become available as part of the Key Insights in Nearby Galaxies: a Far Infrared Survey with Herschel (KINGFISH) and Beyond the Peak programs. With the information from these two far-infrared lines along with the multi-wavelength suite of KINGFISH data, a calibration of the [C II] emission line as a star formation rate (SFR) indicator and a better understanding of the [C II] deficit are pursued. [C II] emission is also compared to polycyclic aromatic hydrocarbon (PAH) emission in these regions to compare photoelectric heating from PAH molecules to cooling by [C II] in the neutral and ionized phases of the ISM. We find that the [C II] emission originating in the neutral phase of the ISM does not exhibit a deficit with respect to the infrared luminosity and is therefore preferred over the [C II] emission originating in the ionized phase of the ISM as an SFR indicator for the normal star-forming galaxies included in this sample
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Internal Audit Around the World: A Perspective on Global Regions
The Institute of Internal Auditors’ (II A’s) Global Internal Audit Common Body of Knowledge (CBOK) Survey is conducted every few years and the results help to identify the continuous development of the profession of internal auditing around the world. The survey also highlights the different practices, attributes, and internal and external factors (such as social, political, environmental, and economic) that are shaping the worldwide profession.
This research report provides an in-depth analysis of the factors and rationale behind the development of the profession and seeks to identify opportunities for the transfer of success stories to the rest of the internal audit community. To perform the analysis, the researchers initially analyzed the 2010 CBOK results, comparing the data for each region. Where the 2010 and 2006 survey questions were comparable, a temporal comparison was conducted to analyze those trends.
As explained in chapter 1, our in-depth analysis is based on interviews with members of the internal audit profession as well as chairs and members of audit committees in seven geographical areas: Africa, Asia-Pacific, Eastern Europe and Central Asia, Latin Americaand Canada, and Western Europe
Entre a fronteira do aprender e o fracasso escolar no Transtorno de Déficit de Atenção e Hiperatividade / Between the frontier of learning and school failure in Attention Deficit Hyperactivity Disorder
A escolarização da criança com Transtorno de Déficit de Atenção e Hiperatividade (TDAH) ainda constitui um grande desafio, visto que além das dificuldades em responder às demandas acadêmicas em termos de aprendizagem, o padrão de interações sociais, com os colegas e os professores, também impõe obstáculos para a participação efetiva em todas as atividades do ambiente escolar. Levantar fatores que levam as crianças com TDAH a não aprenderam na escola foi o objetivo deste estudo longitudinal retrospectivo do tipo coorte histórico que utilizou a revisão de 49 prontuários, com 3 unidades de análise: dados pessoais e socioeconômicos, dados de formação educacional e dados específicos contendo questões dicotômicas de resposta única. Os dados mostrados aqui para os portadores de TDHA da amostra são: 4,1% de histórico de adoção, 2% de existência de patologia de base, 22,4% de histórico de drogadição para o pai e 10,2% para a mãe. Dado discordante da literatura: 87,7% de não reprovação. É primordial buscar constantemente conhecer mais acerca desse transtorno, tanto por parte dos profissionais da educação quanto da família, desde o diagnóstico até o tratamento, de forma a contribuir para oferecer, no âmbito escolar, um ensino significativo para os portadores de TDAH
Chandra X-ray Observations of the Spiral Galaxy M81
A Chandra X-Ray Observatory ACIS-S imaging observation is used to study the
population of X-ray sources in the nearby Sab galaxy M81 (NGC 3031). A total of
177 sources are detected with 124 located within the D25 isophote to a limiting
X-ray luminosity of 3e36 ergs/cm2/s. Source positions, count rates,
luminosities in the 0.3-8.0 keV band, limiting optical magnitudes, and
potential counterpart identifications are tabulated. Spectral and timing
analysis of the 36 brightest sources are reported including the low-luminosity
active galactic nucleus, SN 1993J, and the Einstein-discovered ultra-luminous
X-ray source X6.Comment: 27 pages, 17 figures, 2 tables, submitted to Ap
Achalasia - An Update
Achalasia is an esophageal motility disorder of unknown cause, characterized by aperistalsis of the esophageal body and impaired lower esophageal sphincter relaxation. Patients present at all ages, primarily with dysphagia for solids/liquids and bland regurgitation. The diagnosis is suggested by barium esophagram and confirmed by esophageal manometry. Achalasia cannot be cured. Instead, our goal is to relieve symptoms, improve esophageal emptying and prevent the development of megaesophagus. The most successful therapies are pneumatic dilation and surgical myotomy. The overall success rate of graded pneumatic dilation is 78%, with women and older patients responding best. Laparoscopic myotomy, usually combined with a partial fundoplication, has an overall success rate of 87%. Young patients, especially men, are the best candidates for surgical myotomy. Botulinum toxin injection into the lower esophageal sphincter and smooth muscle relaxants are usually reserved for older patients or those with co-morbid illness. The prognosis for achalasia patients to return to near normal swallowing is good, but the disease is rarely "cured" with a single procedure and intermittent touch-up procedures may be required
Complete genomic sequences of Propionibacterium freudenreichii phages from Swiss cheese reveal greater diversity than Cutibacterium (formerly Propionibacterium) acnes phages
Background:A remarkable exception to the large genetic diversity often observed for bacteriophages infecting aspecific bacterial host was found for the Cutibacterium acnes (formerly Propionibacterium acnes) phages, which are highly homogeneous. Phages infecting the related species, which is also a member of the Propionibacteriaceae family, Propionibacterium freudenreichii , a bacterium used in production of Swiss-type cheeses, have also been described and are common contaminants of the cheese manufacturing process. However, little is known about their genetic composition and diversity.Results:We obtained seven independently isolated bacteriophages that infect P. freudenreichii from Swiss-typecheese samples, and determined their complete genome sequences. These data revealed that all seven phage isolates are of similar genomic length and GC% content, but their genomes are highly diverse, including genes encoding the capsid, tape measure, and tail proteins. In contrast to C. acnes phages, all P. freudenreichii phage genomes encode a putative integrase protein, suggesting they are capable of lysogenic growth. This is supported by the finding of related prophages in some P. freudenreichii strains. The seven phages could further be distinguished as belonging to two distinct genomic types, or ‘ clusters ’ , based on nucleotide sequences, and host range analyses conducted on a collection of P. freudenreichii strains show a higher degree of host specificity than is observed for the C. acnes phages.Conclusions:Overall, our data demonstrate P. freudenreichii bacteriophages are distinct from C. acnes phages, asevidenced by their higher genetic diversity, potential for lysogenic growth, and more restricted host ranges. This suggests substantial differences in the evolution of these related species from the Propionibacteriaceae family and their phages, which is potentially related to their distinct environmental niches
Using [C II] 158 μm Emission from Isolated ISM Phases as a Star Formation Rate Indicator
The brightest observed emission line in many star-forming galaxies is the [C II] 158 μm line, making it detectable up to z ~ 7. In order to better understand and quantify the [C II] emission as a tracer of star formation, the theoretical ratio between the [N II] 205 μm emission and the [C II] 158 μm emission has been employed to empirically determine the fraction of [C II] emission that originates from the ionized and neutral phases of the interstellar medium (ISM). Sub-kiloparsec measurements of the [C II] 158 μm and [N II] 205 μm lines in nearby galaxies have recently become available as part of the Key Insights in Nearby Galaxies: a Far Infrared Survey with Herschel (KINGFISH) and Beyond the Peak programs. With the information from these two far-infrared lines along with the multi-wavelength suite of KINGFISH data, a calibration of the [C II] emission line as a star formation rate (SFR) indicator and a better understanding of the [C II] deficit are pursued. [C II] emission is also compared to polycyclic aromatic hydrocarbon (PAH) emission in these regions to compare photoelectric heating from PAH molecules to cooling by [C II] in the neutral and ionized phases of the ISM. We find that the [C II] emission originating in the neutral phase of the ISM does not exhibit a deficit with respect to the infrared luminosity and is therefore preferred over the [C II] emission originating in the ionized phase of the ISM as an SFR indicator for the normal star-forming galaxies included in this sample
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