86,525 research outputs found
“A Quantitative Measure of Borane Tert-Butylamine Complex Effectiveness in Carbonyl Reduction of Aged Papers.”
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L’attività fisica nella scuola promotrice di salute:studio retrospettivo su un campione di studenti universitari
No full textNella Health Promoting School (HPS) l’attività fisica (AF) si colloca in una posizione di primo piano, essendo una delle otto aree costituenti. Alcuni indicatori di buone pratiche per l’HPS sono specificamente rivolti alle dimensioni riguardanti l’AF, compresa l’Educazione Fisica (EF) curriculare ed extra-curriculare. L’obiettivo è verificare quanto nell’assetto attuale della scuola italiana il ruolo dell’AF sia rispondente alle indicazioni per l’HPS, nel vissuto scolastico in un campione di giovani abruzzesi.
Lo studio è retrospettivo in quanto i soggetti intervistati hanno riferito sulle passate esperienze scolastiche riguardanti l’EF e la pratica di AF, rispetto a quanto raccomandato dall’Organizzazione Mondiale della Sanità per l’HPS. Il campione è stato reclutato su base volontaria, nel mese di marzo 2009, presso gli studenti universitari del corso di laurea triennale in Scienze Motorie dell’Università dell’Aquila. Sono stati raccolti 200 questionari. Lo strumento è composto da 22 domande chiuse con risposta su una scala di giudizi ordinali che, ai fini dell’elaborazione, sono state trasformate in scale di intervallo numeriche (da 1 a 5) tipo Likert. Gli items, poi, sono stati raggruppati secondo domini di contenuto, costituendo tre macrovariabili: Politiche della scuola per l’AF e l’Educazione Motoria; Orientamento al potenziamento della salute nell’EF; Qualità della didattica dell’Educazione Motoria. L’aggregazione degli items è stata stabilita su una valutazione di facciata e confermata dall’analisi fattoriale esplorativa. Sono stati verificati l’associazione tra variabili (test del Chi quadrato) e modelli di regressione lineare sia quantitativa che logistica.
I giudizi migliori riguardano la macroarea della Qualità della didattica (valore medio su una scala da 1 a 5 pari a 3.03, ds 0.64), seguita dall’Orientamento per la salute (media 1.90, ds 0.57) e dalle Politiche scolastiche (media 1.35, ds 0.46). L’influenza riconosciuta alla scuola sul proprio atteggiamento nei confronti dello stile di vita attivo risulta correlato significativamente all’esperienza didattica e meno e solo per le femmine a esplicite attività orientate alla prevenzione e promozione di comportamenti salubri. Le politiche della scuola nell’area dell’AF, sembrano meno influenti, probabilmente perché un campo d’azione ancora poco implementato e, quindi, poco riconoscibile dagli studenti, disomogeneo e legato a iniziative sporadiche e poco strutturate.
Lo studio conferma la necessità di valorizzare l’AF nella scuola secondaria, non solo nella dimensione didattica ma per le sue implicazioni e potenzialità nella promozione della salute delle persone che vi vivono e vi lavorano insieme
Scalable Image Coding Using Reversible Integer Wavelet Transforms
No full textReversible integer wavelet transforms allow both lossless and lossy decoding using a single bitstream. We present a new fully scalable image coder and investigate the lossless and lossy performance of these transforms in the proposed coder. The lossless compression performance of the presented method is comparable to JPEG-LS. The lossy performance is quite competitive with other efficient lossy compression methods. This work was supported in part by the National Science Foundation under Grant No. NCR-9258374. y EDICS: 1-STIL. A. Bilgin, F. Sheng, and M. W. Marcellin are with the Department of Electrical and Computer Engineering, The University of Arizona, Tucson, AZ 85721. P. J. Sementilli is with Science Applications International Corp. (SAIC), 101 N. Wilmot Rd., Tucson, AZ 85711. Please address all correspondence to A. Bilgin. E-mail: [email protected]. Phone: (520) 621-9769. Fax: (520) 621-8076. 1 I Introduction The wavelet transform has been widely used in image compression. H..
Transcultural validation of CDC’s School Health Index in Italian context
No full textSchools promote health if they are healthy as organizations. Unfortunately, this
comprehensive concept of Health Promoting School (HPS) is more advanced than
its practice. So, there is a need of assessment methods: indices and indicators of HPS
implementation.
The WHO outlined 8 areas for HPS: Health Services; Health Education (HE); Physical
and social environment; Health Promotion (HP) for staff; Community involvement;
Nutrition; Physical education and recreation; Mental health, counselling and
social support. Based on this framework, the USA’s Centers for Disease Control
and Prevention published since 2000 the School Health Index (SHI) composed of
8 modules with a scoring system.
The objective of our work was to validate an Italian version of SHI for Middle-High
schools.
SHI modules have been translated, integrated and adapted to Italian schools
organisation and characteristics (i.e. safety laws, HE activities, nutrition services).
12 schools of Abruzzo Region have been involved: their staff filled in all
questionnaires and answered a validation form on the utility, completeness and
well-balanced aspects investigated.
The main results are: the staff appreciated this evaluation system and completed
nearly all modules; many items have to be reformulated due to specific differences
between the Italian and American context; the system needs to be integrated with
student and staff wellness assessment, learning experience and more deepened
physical environment evaluation.
The validated scoring system will enable Italian schools to identify strengths and
weaknesses of HP policies and programs
Variations on the Author
No full text“Variations on the Author” discusses two of Eduardo Coutinho’s recent films (Um Dia na Vida, from 2010, and Últimas Conversas, posthumously released in 2015) and their contribution to the general question of documentary authorship. The director’s filmography is characterized by a consistent yet self-effacing form of authorial self-inscription: Coutinho often features as an interviewer that rather than express opinions propels discourses; an interviewer that is good at listening. This mode of self-inscription characterizes him as an author who is not expressive but who is nonetheless markedly present on the screen. In Um Dia na Vida, however, Coutinho is completely absent form the image, while Últimas Conversas, on the contrary, includes a confessional prologue that moves the director from the margins to the center of his films. This article examines the ways in which these works stand out in the filmography of a director who offers new insights into the notion of cinematic authorship
[Newspaper Clipping: Author Claims Evidence of Second JFK Assassin #1]
No full textNewspaper article titled "Author Claims Evidence of Second JFK Assassin." The article states that author Richard J. Whalen concluded "that there is circumstantial evidence to support the theory of a second assassin in the shooting of President John F. Kennedy.
Also By The Same Author: AKTiveAuthor, a Citation Graph Approach to Name Disambiguation
No full textThe desire for definitive data and the semantic web drive for inference over heterogeneous data sources requires co-reference resolution to be performed on those data. In particular, name disambiguation is required to allow accurate publication lists, citation counts and impact measures to be determined. This paper describes a graph-based approach to author disambiguation on large-scale citation networks. Using self-citation, co-authorship and document source analyses, AKTiveAuthor clusters papers, achieving precision of 0.997 and recall of 0.818 over a test group of eight surname clusters
John F. Kennedy telegram to Roosevelt
No full textJersey Homesteads (later the Borough of Roosevelt) was established in the 1930s as an agro-industrial cooperative community. It was established specifically for urban Jewish garment workers, many of whom had emigrated from Europe. President John F. Kennedy sent a telegram to the citizens of Roosevelt, New Jersey, apologizing for not being able to attend the memorial dedication in honor of former President Franklin Delano Roosevelt. (Jersey Homesteads became Roosevelt in 1945 in honor of the president.) President Kennedy expressed his gratitude to the people of Roosevelt for constructing the memorial, and commented that it will serve as a constant reminder of Roosevelt's good works
Logarithmic variance profiles and the corresponding f-1 spectra of temperature fluctuations in turbulent Rayleigh-Bénard convection
No full textWe report experimental results for the temperature variance 2(z) and the corresponding frequency spectra P(f) in turbulent Rayleigh-Bénard convection (RBC) in a cylindrical sample of aspect ratioT= D/L = 1:00 (D = 1:12 m is the diameter and L = 1:12 m the height). The measurements were conducted in the Rayleigh-number range 1011 < Ra < 1:35 1014 and Pr ' 0:8. For Ra = 1:35x1014, 2(z) could be described well by a logarithmic dependence on the vertical position z in a range of z 1 < z < z 2 with z 1 ' 70 and z 2 = 0:1L. Here L=(2Nu) is the thickness of a thin thermal sublayer adjacent to the horizontal plate where the heat flux (denoted by the Nusselt number Nu) is carried mostly by thermal diffusion. In the log layer, we found that the temperature spectra had a significant frequency range over which P(f) f with close to 1. As Ra decreased, increased so that the log layer became thinner. At Ra = 2:05 1011, z 2 < z 1 and therefore there was no range for a log layer. Correspondingly, the temperature spectrum near the horizontal plate did not have the f1 scaling form either
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