2,035 research outputs found
Integrating the Transtheoretical Model: A Quantitative Analysis in the Area of Sun Exposure
The constructs involved in the Transtheoretical Model (TTM) have been shown to have similar relationships to the Stages of Change across a variety of behaviors. While much work has been done investigating the way the constructs interact cross-sectionally and longitudinally, a completely integrated look at all the constructs of the TTM has not yet been successful. This study integrated all constructs of the TTM related to increase of sun protective behavior across three time points.
The sample used in this study is a portion of a sample collected for three larger, multiple behavior intervention studies. Assessments were collected at baseline, 6-, and 12-month intervals. At baseline, these larger samples included 1472 people in worksites, 1816 parents, and 3875 physician patients at risk for sun exposure. Of these, 341 worksite, 4 31 parent, and 1012 physician had data at all three time points with all necessary variables.
Structural equation modeling was utilized to evaluate panel designs involving seven TTM constructs at baseline, 6-, and 12-month time points. Different models were run within each pre-action Stage of Change. Due to the complexity of the model, a step approach was taken to evaluate the relationships among the constructs.
The Precontemplation group showed relationships between Experiential Processes, Pros and sun protective behavior. The Contemplation and Preparation samples both showed important relationships between Cons and Confidence with behavior. There were more significant paths in the Preparation model indicating greater variance possibly due to more stage movement at follow-up time points.
While not all paths found confirm expectations based on the TTM, there was strong support for the theory. Additional work needs to be done to further investigate these relationships among individual stage transitions or transition groups. A better understanding of the empirical relationships between these constructs will help further understanding of the theory and improve interventions based on the TTM
The Man of La Mancha press release
April 7-11 and 14-18, 1982. University Theatre, Viertes Haus 100. Book by Dale Wasserman. Lyrics by Joe Darion. Music by Mitch Leigh. Based on the novel Don Quixote by Miguel de Cervantes. Directed by Therald Todd. Music Director Joseph Rohm. Choreography by Lee Brooke and Sue Steele. Costumes by Jaqueline Easter. Set design by H. Paul Mazer. Starring Kurt E. Payne as Captain of the Inquisition; R. J. Musser as Miguel de Cervantes, Don Quixote, Alonso Quijana; J. R. Vega as Sancho Panza.https://digitalcommons.fiu.edu/theatre_posters/1125/thumbnail.jp
Swift X-ray Observations of Classical Novae
The new gamma-ray burst mission Swift has obtained pointed observations of
several classical novae in outburst. We analyzed all the observations of
classical novae from the Swift archive up to 30 June, 2006. We analyzed usable
observations of 12 classical novae and found 4 non-detections, 3 weak sources
and 5 strong sources. This includes detections of 2 novae exhibiting spectra
resembling those of Super Soft X-ray binary Source spectra (SSS) implying
ongoing nuclear burning on the white dwarf surface. With these new Swift data,
we add to the growing statistics of the X-ray duration and characteristics of
classical novae.Comment: Accepted for ApJ; this version contains additional material: 18
pages, 16 figure
Collimation and asymmetry of the hot blast wave from the recurrent nova V745 Scorpii
The recurrent symbiotic nova V745 Sco exploded on 2014 February 6 and was
observed on February 22 and 23 by the Chandra X-ray Observatory Transmission
Grating Spectrometers. By that time the supersoft source phase had already
ended and Chandra spectra are consistent with emission from a hot, shock-heated
circumstellar medium with temperatures exceeding 10^7K. X-ray line profiles are
more sharply peaked than expected for a spherically-symmetric blast wave, with
a full width at zero intensity of approximately 2400 km/s, a full width at half
maximum of 1200 +/- 30 km/s and an average net blueshift of 165 +/- 10 km/s.
The red wings of lines are increasingly absorbed toward longer wavelengths by
material within the remnant. We conclude that the blast wave was sculpted by an
aspherical circumstellar medium in which an equatorial density enhancement
plays a role, as in earlier symbiotic nova explosions. Expansion of the
dominant X-ray emitting material is aligned close to the plane of the sky and
most consistent with an orbit seen close to face-on. Comparison of an
analytical blast wave model with the X-ray spectra, Swift observations and
near-infrared line widths indicates the explosion energy was approximately
10^43 erg, and confirms an ejected mass of approximately 10^-7 Msun. The total
mass lost is an order of magnitude lower than the accreted mass required to
have initiated the explosion, indicating the white dwarf is gaining mass and is
a supernova Type 1a progenitor candidate.Comment: To appear in the Astrophysical Journa
Collagen cross-linking in human bone and articular cartilage. Age-related changes in the content of mature hydroxypyridinium residues
Lateralization of mesial temporal lobe epilepsy with chronic ambulatory electrocorticography
Objective
Patients with suspected mesial temporal lobe (MTL) epilepsy typically undergo inpatient video–electroencephalography (EEG) monitoring with scalp and/or intracranial electrodes for 1 to 2 weeks to localize and lateralize the seizure focus or foci. Chronic ambulatory electrocorticography (ECoG) in patients with MTL epilepsy may provide additional information about seizure lateralization. This analysis describes data obtained from chronic ambulatory ECoG in patients with suspected bilateral MTL epilepsy in order to assess the time required to determine the seizure lateralization and whether this information could influence treatment decisions. Methods
Ambulatory ECoG was reviewed in patients with suspected bilateral MTL epilepsy who were among a larger cohort with intractable epilepsy participating in a randomized controlled trial of responsive neurostimulation. Subjects were implanted with bilateral MTL leads and a cranially implanted neurostimulator programmed to detect abnormal interictal and ictal ECoG activity. ECoG data stored by the neurostimulator were reviewed to determine the lateralization of electrographic seizures and the interval of time until independent bilateral MTL electrographic seizures were recorded. Results
Eighty-two subjects were implanted with bilateral MTL leads and followed for 4.7 years on average (median 4.9 years). Independent bilateral MTL electrographic seizures were recorded in 84%. The average time to record bilateral electrographic seizures in the ambulatory setting was 41.6 days (median 13 days, range 0–376 days). Sixteen percent had only unilateral electrographic seizures after an average of 4.6 years of recording. Significance
About one third of the subjects implanted with bilateral MTL electrodes required \u3e1 month of chronic ambulatory ECoG before the first contralateral MTL electrographic seizure was recorded. Some patients with suspected bilateral MTL seizures had only unilateral electrographic seizures. Chronic ambulatory ECoG in patients with suspected bilateral MTL seizures provides data in a naturalistic setting, may complement data from inpatient video-EEG monitoring, and can contribute to treatment decisions. Key Points Ambulatory electrocorticograms were obtained in patients implanted with a responsive neurostimulator and bilateral mesial temporal intracranial electrodes. In patients with bilateral seizures, the average time to record bilateral electrographic seizures in the ambulatory setting was 41.6 days (median 13, range 0–376). Some patients suspected to have bilateral MTL seizures after standard diagnostic localization evaluations had only unilateral electrographic seizures. Chronic ambulatory ECoG samples provide naturalistic data that complement inpatient monitoring, and may contribute information that affects treatment decisions
Le développement professionnel des enseignants et ses effets positifs sur les apprentissages des élèves
En Nouvelle-Zélande, une attention grandissante a été portée par les décideurs politiques au développement professionnel des enseignants et à la façon dont il améliorait les résultats des élèves. Cette approche permet de développer des pratiques d’enseignement collaboratives, en plaçant les enseignants dans une position d’enquêteur de leurs propres pratiques. Les programmes de développement professionnel ont des effets réels sur l’amélioration de la réussite des élèves dans le domaine de la littératie, notamment en lecture. Ils permettent aux enseignants de mieux identifier leurs besoins de formation à travers une analyse des difficultés des élèves et la mise en œuvre de procédures d’évaluation efficaces.In New Zealand, decision makers are more and more focusing on teachers’ professional development and the way it improves student learning. This approach allows to develop collaborative teaching practices, asking teachers to inquire about their own practices. Professional development programmes have real effects on the improvement of students’ assessments in information literacy and particularly reading. They allow teachers to better identify their professional training needs from an analyses of their students’ difficulties and by setting up efficient assessment procedures.En Nueva Zelanda, los responsables políticos otorgaron una atención cada vez más importante al desarrollo profesional de los docentes así como lo hicieron respecto a la manera mediante la cual éste mejoraba los resultados de los alumnos. Este enfoque permite desarrollar prácticas de enseñanza colaborativas, poniendo a los docentes en una postura de investigadores sobre sus propias prácticas. Los programas de desarrollo profesional tienen verdaderos efectos en la mejora de los logros de los alumnos en el ámbito de la literacia, en particular en la lectura. Permiten a los profesores una mejor identificación de las necesidades de formación a través un análisis de las dificultades de los alumnos y la realización de procedimientos eficientes de evaluación.In Neuseeland haben sich politische Entscheidungsträger zunehmend für die berufliche Entwicklung der Lehrer und für die Art und Weise interessiert, wie sie die Leistungen der Schüler verbessern kann. Diese Herangehensweise ermöglicht die Entwicklung der Praktiken in Zusammenarbeit, indem sie die Lehrer zu Beobachtern der eigenen Praktiken macht. Programme zur beruflichen Entwicklung haben tatsächliche Auswirkungen auf die Verbesserung des Schülererfolgs im Bereich der Informationskompetenz (literacy), vor allem was das Lesen angeht. Sie erlauben dem Lehrer, den eigenen Fortbildungsbedarf besser zu identifizieren durch eine Analyse der Schülerschwierigkeiten und die Umsetzung effizienter Beurteilungsprozeduren
Assessment of the usefulness of a diagnostic test: A survey of patient preference for diagnostic techniques in the evaluation of intestinal inflammation
BACKGROUND: In order to assess the usefulness of radiolabeled white cell scanning in the diagnosis of intestinal inflammation, subjects were asked to rank several dimensions of preference for white cell scanning in relation to other diagnostic tests. Two groups were surveyed: one known to have inflammatory bowel disease and the second not familiar in most cases with the tests. Subjects were asked to rank preference for each of seven tests: radiolabeled white cell scan, colonoscopy, barium enema, sigmoidoscopy, enteroclysis, stool analysis and laparotomy for the diagnosis of IBD and impressions of discomfort, embarrassment, inconvenience and danger related to each test. Mean rank scores were calculated, test ranks compared within groups and significance determined by the Wilcoxon rank test. RESULTS: Significant differences were seen in overall preference for white cell scan over barium enema and colonoscopy (p < 0.01) in both survey groups. Perceived discomfort and embarrassment demonstrated similar rankings. CONCLUSION: This patient preference combined with the reported accuracy of white cell scanning further establishes the usefulness of this means of IBD diagnosis
Photon-Phonon-assisted tunneling through a single-molecular quantum dot
Based on exactly mapping of a many-body electron-phonon interaction problem
onto a one-body problem, we apply the well-established nonequilibrium Green
function technique to solve the time-dependent phonon-assisted tunneling at low
temperature through a single-molecular quantum dot connected to two leads,
which is subject to a microwave irradiation field. It is found that in the
presence of the electron-phonon interaction and the microwave irradiation
field, the time-average transmission and the nonlinear differential conductance
display additional peaks due to pure photon absorption or emission processes
and photon-absorption-assisted phonon emission processes. The variation of the
time-average current with frequency of the microwave irradiation field is also
studied.Comment: 9 pages, 6 figures, submitted to Phys. Rev. B. accepted by Phys. Rev.
Silicate dust in the environment of RS Ophiuchi following the 2006 eruption
We present further Spitzer Space Telescope observations of the recurrent nova
RS Ophiuchi, obtained over the period 208-430 days after the 2006 eruption. The
later Spitzer IRS data show that the line emission and free-free continuum
emission reported earlier is declining, revealing incontrovertible evidence for
the presence of silicate emission features at 9.7 and 18microns. We conclude
that the silicate dust survives the hard radiation impulse and shock blast wave
from the eruption. The existence of the extant dust may have significant
implications for understanding the propagation of shocks through the red giant
wind and likely wind geometry.Comment: 12 pages, 4 figures, accepted for publication in ApJ (Letters
- …