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Search Results: 1 - 10 of 8456 matches for " Lisette Johnson-Hill "
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Smoking Enhances Risk for New External Genital Warts in Men
Dorothy J. Wiley,David Elashoff,Emmanuel V. Masongsong,Diane M. Harper,Karen H. Gylys,Michael J. Silverberg,Robert L. Cook,Lisette M. Johnson-Hill
International Journal of Environmental Research and Public Health , 2009, DOI: 10.3390/ijerph6031215
Abstract: Repeat episodes of HPV-related external genital warts reflect recurring or new infections. No study before has been sufficiently powered to delineate how tobacco use, prior history of EGWs and HIV infection affect the risk for new EGWs. Behavioral, laboratory and examination data for 2,835 Multicenter AIDS Cohort Study participants examined at 21,519 semi-annual visits were evaluated. Fourteen percent (391/2835) of men reported or were diagnosed with EGWs at 3% (675/21,519) of study visits. Multivariate analyses showed smoking, prior episodes of EGWs, HIV infection and CD4+ T-lymphocyte count among the infected, each differentially influenced the risk for new EGWs.
Sleep Disordered Breathing, Fatigue, and Sleepiness in HIV-Infected and -Uninfected Men
Susheel P. Patil, Todd T. Brown, Lisa P. Jacobson, Joseph B. Margolick, Alison Laffan, Lisette Johnson-Hill, Rebecca Godfrey, Jacquett Johnson, Sandra Reynolds, Alan R. Schwartz, Philip L. Smith
PLOS ONE , 2014, DOI: 10.1371/journal.pone.0099258
Abstract: Study Objectives We investigated the association of HIV infection and highly active antiretroviral therapy (HAART) with sleep disordered breathing (SDB), fatigue, and sleepiness. Methods HIV-uninfected men (HIV?; n = 60), HIV-infected men using HAART (HIV+/HAART+; n = 58), and HIV-infected men not using HAART (HIV+/HAART?; n = 41) recruited from two sites of the Multicenter AIDS cohort study (MACS) underwent a nocturnal sleep study, anthropometric assessment, and questionnaires for fatigue and the Epworth Sleepiness Scale. The prevalence of SDB in HIV- men was compared to that in men matched from the Sleep Heart Health Study (SHHS). Results The prevalence of SDB was unexpectedly high in all groups: 86.7% for HIV?, 70.7% for HIV+/HAART+, and 73.2% for HIV+/HAART?, despite lower body-mass indices (BMI) in HIV+ groups. The higher prevalence in the HIV? men was significant in univariate analyses but not after adjustment for BMI and other variables. SDB was significantly more common in HIV? men in this study than those in SHHS, and was common in participants with BMIs <25 kg/m2. HIV+ men reported fatigue more frequently than HIV? men (25.5% vs. 6.7%; p = 0.003), but self-reported sleepiness did not differ among the three groups. Sleepiness, but not fatigue, was significantly associated with SDB. Conclusions SDB was highly prevalent in HIV? and HIV+ men, despite a normal or slightly elevated BMI. The high rate of SDB in men who have sex with men deserves further investigation. Sleepiness, but not fatigue, was related to the presence of SDB. Clinicians caring for HIV-infected patients should distinguish between fatigue and sleepiness when considering those at risk for SDB, especially in non-obese men.
A study evaluating the effect of Educational Needs Assessment Tool (ENAT) focused patient education, on health outcomes in patients with Rheumatoid Arthritis: Protocol of an ongoing study  [PDF]
Bernadette Hardware, Claire Hale, Dawn Johnson, Jackie Hill, Tracey Young, Adewale Adebajo
Open Journal of Nursing (OJN) , 2013, DOI: 10.4236/ojn.2013.32039
Abstract:

Aims and objectives: To evaluate the effectiveness of a patient education tool (the ENAT) on self efficacy, patient knowledge, health outcomes and its usability in practice. Background: The effectiveness and value of patient education in rheumatoid arthritis have been questioned. The ENAT was developed to help the nurses to provide more focused, individualized and relevant education. The psychometric properties of the ENAT have been assessed. Design: This study is a single blind randomized controlled trial using both quantitative and qualitative methodology. The primary outcome is patient self efficacy. Secondary outcomes are physical function, psychological status, pain levels, social interaction and patient knowledge of disease. Methods: 130 RA patients will be randomized into an experimental (EG) or control group (CG). The EG patients will complete the ENAT prior to seeing a Clinical Nurse Specialist (CNS) at weeks 0, 16 and 32. The CNS will use the ENAT as a template to meet patients perceived educational needs in addition to the usual care. The CG will receive their usual care from the CNS without the aid of the ENAT. To determine the ENAT’s usability, semi-structured quailtative interviews will take place with the practitioners and a sample of patients once they have completed the quantitative arm of the study. Results: The study commenced in April 2011 and the results are expected to be available after April 2013. Conclusions: It is hypothesized that nurses’ use of the ENAT will lead to increased patient self efficacy, and improved patient knowledge and health outcomes among the patients who used it. Furthermore, it is hypothesized that the ENAT will be easy for staff and patients to use. Relevance to clinical practice: The ENAT was developed to assess the perceived educational needs of patients with rheumatoid

The monosaccharide transporter gene family in land plants is ancient and shows differential subfamily expression and expansion across lineages
Deborah A Johnson, Jeffrey P Hill, Michael A Thomas
BMC Evolutionary Biology , 2006, DOI: 10.1186/1471-2148-6-64
Abstract: Here, we utilize expressed sequence tag (EST) data to study gene duplication and expression patterns in the monosaccharide transporter (MST) gene family across the land plants. In Arabidopsis, there are 53 MST genes that form seven distinct subfamilies. We created profile hidden Markov models of each subfamily and searched EST databases representing diverse land plant lineages to address the following questions: 1) Are homologs of each Arabidopsis subfamily present in the earliest land plants? 2) Do expression patterns among subfamilies and individual genes within subfamilies differ across lineages? 3) Has gene duplication within each lineage resulted in lineage-specific expansion patterns? We also looked for correlations between relative EST database representation in Arabidopsis and similarity to orthologs in early lineages.Homologs of all seven MST subfamilies were present in land plants at least 400 million years ago. Subfamily expression levels vary across lineages with greater relative expression of the STP, ERD6-like, INT and PLT subfamilies in the vascular plants. In the large EST databases of the moss, gymnosperm, monocot and eudicot lineages, EST contig construction reveals that MST subfamilies have experienced lineage-specific expansions. Large subfamily expansions appear to be due to multiple gene duplications arising from single ancestral genes. In Arabidopsis, one or a few genes within most subfamilies have much higher EST database representation than others. Most highly represented (broadly expressed) genes in Arabidopsis have best match orthologs in early divergent lineages.The seven subfamilies of the Arabidopsis MST gene family are ancient in land plants and show differential subfamily expression and lineage-specific subfamily expansions. Patterns of gene expression in Arabidopsis and correlation of highly represented genes with best match homologs in early lineages suggests that broadly expressed genes are often highly conserved, and that most gen
Foreground-Induced Biases in CMB Polarimeter Self-Calibration
M. H. Abitbol,J. C. Hill,B. R. Johnson
Physics , 2015,
Abstract: Precise polarisation measurements of the cosmic microwave background (CMB) require accurate knowledge of the instrument orientation relative to the sky frame used to define the cosmological Stokes parameters. Suitable celestial calibration sources that could be used to measure the polarimeter orientation angle are limited, so current experiments commonly `self-calibrate.' The self-calibration method exploits the theoretical fact that the $EB$ and $TB$ cross-spectra of the CMB vanish in the standard cosmological model, so any detected $EB$ and $TB$ signals must be due to systematic errors. However, this assumption neglects the fact that polarized Galactic foregrounds in a given portion of the sky may have non-zero $EB$ and $TB$ cross-spectra. If these foreground signals remain in the observations, then they will bias the self-calibrated telescope polarisation angle and produce a spurious $B$-mode signal. In this paper we estimate the foreground-induced bias for various instrument configurations and then expand the self-calibration formalism to account for polarized foreground signals. Assuming the $EB$ correlation signal for dust is in the range constrained by angular power spectrum measurements from Planck at 353 GHz (scaled down to 150 GHz), then the bias is negligible for high angular resolution experiments, which have access to CMB-dominated high $\ell$ modes with which to self-calibrate. Low-resolution experiments observing particularly dusty sky patches can have a bias as large as $0.5^\circ$. A miscalibration of this magnitude generates a spurious $BB$ signal corresponding to a tensor-to-scalar ratio of approximately $r\sim2\times10^{-3}$, within the targeted range of planned experiments.
El portafolio: estrategia para evaluar la producción escrita en inglés por parte de estudiantes universitarios
Lunar,Lisette;
Núcleo , 2007,
Abstract: this paper proposes the use of the portfolio as a strategy to assess writing skills in english in university students. the proposal is a response, basically, to the lack of innovation in assessment procedures at universities, the rigidna ture of this area, and a poor participation of students in their ownlearning process in efl. therefore, a qualitative case study has been conducted in the field of written production as well as a thorough research with venezuelan experts in the use of the portfolio. finally, a comparison among experiences, both ours and experts?, allowed us to conclude about the potential and the impact that portfolios have as strategies to assess writing skills.
Inmigración alemana en el sur de Chile, siglo XIX
Lisette Winkler
Nuevo mundo - Mundos Nuevos , 2009, DOI: 10.4000/nuevomundo.49283
Abstract: Presentación (en espa ol) Durante aproximadamente un mes de trabajo de campo en Chile, Lisette Winkler (EScoM-FMSH) ha grabado una serie de entrevistas que les hizo a los descendientes de los colonos alemanes quienes se instalaron en los alrededores del lago Llanquihue en el siglo XIX. Los documentos audiovisuales fueron recopilados en dos aldeas del sur del país, Frutillar y Puerto Octay. Recogen tanto testimonios orales de los descendientes como tomas panorámicas de los paisajes del sur, qu...
" Proyecto de memoria y educación en el Estadio Nacional de Chile: "Museo Abierto, Sitio de Memoria y Homenaje " Stade National : Musée Ouvert, Lieu de Mémoire et d’Hommage .
Lisette Winkler
Nuevo mundo - Mundos Nuevos , 2010, DOI: 10.4000/nuevomundo.59174
Abstract: Entrevista (en espa ol) Presentación Dentro de los temas de interés para la Mediateca Latinoamericana (AMSuD) y los Archivos Audiovisuales de la Investigación (AAR-ESCoM), destaca de manera importante la investigación y difusión sobre el pasado, presente y futuro de los Derechos Humanos en América Latina. En el caso de Chile, abrimos un primer espacio a esta problemática a partir de un proyecto que apunta a la creación de un Centro de Memoria y Educación en el Estadio Nacional de Chile: el ...
Impactos económicos y sociales de la inmigración alemana en Valdivia (Chile) en el siglo XIX Impact économique de l'immigration allemande à Valdivia (Chili) XIXe siècle
Lisette Winkler
Nuevo mundo - Mundos Nuevos , 2009, DOI: 10.4000/nuevomundo.57959
Abstract: Entrevista (en espa ol) Presentación (en espa ol) Patricio Bernedo, doctor (Dr. Phil.) por la Katholische Universit t de Eichst tt, Alemania, es director del Instituto de Historia de la Pontificia Universidad Católica de Chile. Actualmente investiga y publica sobre problemáticas relacionadas con la historia económica de Chile y la historia de la prensa en América Latina. En esta entrevista, Patricio Bernedo da cuenta del proceso de colonización alemana que se desarrolló a fines del siglo XIX ...
Turning Research into Action: Using Factor Analysis to Enhance Program Evaluation  [PDF]
Ruth Wetta, Lisette T. Jacobson, Frank Dong
Open Journal of Applied Sciences (OJAppS) , 2013, DOI: 10.4236/ojapps.2013.34038
Abstract:

Purpose: Sexual activity among adolescents in the United States remains high. Nearly 46% of students grades 9-12 have engaged in sexual intercourse. One of the more recent statistical tools employed in evaluation efforts includes factor analysis. The objective of this study was to investigate the underlying dimensions of a survey instrument that assesses a youth character development program, which focuses on avoiding high-risk behaviors. Method: The 76-item survey instrument was administered to adolescents (age 12-18). During the 2009-2010 school year, 652 participants in the intervention group and 1110 participants in the comparison group completed the pre-, post-, and 6-month follow-up survey. Results: Using Ajzen’s theory of planned behavior groupings, 27 survey items were selected. Through iterative principal axis factoring, four factors were extracted and rotated. A visual scree plot was generated to determine the number of acceptable factors. The extracted factors accounted for 52.53% of the total variance. Factors were subjected to Equimax rotation with Kaiser normalization and converged after six iterations. Variables with patterned weights less than 0.44 were excluded. A reliability analysis demonstrated internal consistency. Conclusions: Identified factors included: 1) Teenagers’ attitudes toward sexual health behaviors; 2) Teenagers’ perceptions of the consequences of sexual health behaviors; 3) Parental or guardian expectations; and 4) Teenagers’ relationships with parents or guardians. This study’s results indicated that all factors can be described within Ajzen’s theoretical framework consistent with previous research findings. Results may be used to enhance delivery of the intervention.

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