229 research outputs found
Are You Still Helping That Community? : Reflections on Community I Litercy Research and Practice
Chapter 2 Teacher Educator by Day, Homeschooling Parent by Night: Examining Paradoxes in Being a Black Female Teacher Educator
Cultivating Racial and Linguistic Diversity in Literacy Teacher Education examines how English and literacy teacher educationâa space dominated by White, English-monolingual, middle class perspectivesâshapes the experiences of preservice teachers of color and their construction of a teacher identity. Significant and timely, this book focuses attention on the unique needs and perspectives of racially and linguistically diverse preservice teachers in the field of literacy and English education and offers ways to improve teacher training to better meet the needs of preservice teachers from all racial, ethnic, and linguistic backgrounds. These changes have the potential to diversify the teacher force and cultivate teachers who bring rich racial, cultural, and linguistic histories to the field of teaching
A Study of the Language Practices of Ethnolinguistic Minority Preservice Teachers
Thesis advisor: Lisa Patel StevensIn this dissertation, I share findings generated from a year-long ethnographic and sociolinguistic study of the discursive practices of Black and Latina female preservice teachers, all nonstandard language and dialect speakers, across three settings: the university classroom, the practicum teaching classroom, and a social setting. The aim of the study was to examine how teacher education as a discursive space shapes the linguistic decisions of ethnolinguistic minority preservice teachersâindividuals who speak varieties of languages and dialects that are deemed âless thanâ and âinferior toâ dominant language varieties (e.g., African American Language (see Baugh, 1999; Smitherman, 1999); Spanish language varieties (e.g., AnzaldĂșa, 1987/1999; Zentella, 2004)), and accordingly, are granted lower status in American society (Lippi-Green, 2004). Guiding this inquiry was the understanding that through the study of language, it is possible to reveal the tacit theories and ideologies that persist within dominant spaces and the ways in which such ideologies affect the language choices that ethnolinguistic minority preservice teachers must make in order to acculturate a dominant teacher identity. I captured and examined transcripts of discursive practices evidenced through videotaped and audiotaped speech events, observations, interviews, and archival data (e.g., journal reflections, classroom assignments) using ethnographic research methods and critical discourse analysis (see Chouliaraki and Fairclough, 1999; Rogers, 2004c). My analysis of the data prompted implications for the field of teacher education and for the role of qualitative research methodologies in the study of language, discourse, and identity.Thesis (PhD) â Boston College, 2008.Submitted to: Boston College. Lynch School of Education.Discipline: Curriculum and Instruction
National Mass Drug Administration Costs for Lymphatic Filariasis Elimination
Lymphatic filariasis (LF), commonly known as elephantiasis, is a profoundly disfiguring parasitic disease caused by thread-like nematode worms. This disease can often be disabling, thus reducing the potential productivity of the affected individuals. The WHO places the number of people at risk in 83 countries at 1.307 billion. This study was undertaken in seven countriesâBurkina Faso, Ghana, Egypt, Tanzania, the Philippines, the Dominican Republic, and Haitiâusing a common protocol to determine the costs of mass drug administration (MDA) programs to interrupt transmission of infection with LF, because there is lack of sufficient information about the costs of these programs. The results demonstrate that LF MDA is affordable and relatively inexpensive when compared to other public health programs. In the context of initiatives for integrating programs for the control and elimination of neglected tropical diseases, this study adds specifically to the relatively scarce body of information about the costs of MDA programs for LF. It also adds to the general knowledge about the application of methods that can be used to estimate the costs and cost-effectiveness of an integrated approach
Evaluated Community Fire Safety Interventions in the United States: A Review of Current Literature
The purpose of the study was to assess the state of fire prevention research, provide an updated synthesis of evaluated fire prevention programs, and discuss the role of fire fighters and data systems in prevention efforts. The review included all evaluations of U.S. based fire prevention interventions published between January 1998 and September 2004 and any earlier articles about U.S. fire prevention interventions not included in two prior review articles. We retrieved information from each identified study including evaluation findings, involvement of fire service personnel and use of existing data systems. We identified twelve articles: seven reported on smoke alarm interventions, three on multi-faceted programs, and two other programs. Five programs involved fire service personnel in the design, implementation, and/or evaluation, and three used existing data systems. Studies reviewed suggest that canvassing and smoke alarm installations are the most effective means of distributing alarms and increasing the functional status of distributed alarms. The functionality of smoke alarms, an issue noted in earlier reviews, remains a problem. Programs involving partnerships with fire departments have indicated success in preventing fires and deaths, improving smoke alarm ownership and functional status, and improving childrenâs fire safety knowledge. Using existing data systems to target and to evaluate interventions was effective. In the years since prior reviews, some improvements in the rigor of evaluation designs have been made, but there is still a need for high quality evaluations that will inform fire injury prevention efforts
Neglected Patients with a Neglected Disease? A Qualitative Study of Lymphatic Filariasis
Lymphatic filariasis (LF) is a tropical disease causing extreme swelling of the limbs and male genitals. Despite recent successes in preventing transmission of the disease, some 40 million people worldwide who already have the disease have been largely neglected. We aimed to increase understanding of how this vulnerable, neglected group can be helped, by asking people with LF in Sri Lanka to recount their own experiences
An interlaboratory comparison of mid-infrared spectra acquisition: Instruments and procedures matter
Diffuse reflectance spectroscopy has been extensively employed to deliver timely and cost-effective predictions of a number of soil properties. However, although several soil spectral laboratories have been established worldwide, the distinct characteristics of instruments and operations still hamper further integration and interoperability across mid-infrared (MIR) soil spectral libraries. In this study, we conducted a large-scale ring trial experiment to understand the lab-to-lab variability of multiple MIR instruments. By developing a systematic evaluation of different mathematical treatments with modeling algorithms, including regular preprocessing and spectral standardization, we quantified and evaluated instruments' dissimilarity and how this impacts internal and shared model performance. We found that all instruments delivered good predictions when calibrated internally using the same instruments' characteristics and standard operating procedures by solely relying on regular spectral preprocessing that accounts for light scattering and multiplicative/additive effects, e.g., using standard normal variate (SNV). When performing model transfer from a large public library (the USDA NSSC-KSSL MIR library) to secondary instruments, good performance was also achieved by regular preprocessing (e.g., SNV) if both instruments shared the same manufacturer. However, significant differences between the KSSL MIR library and contrasting ring trial instruments responses were evident and confirmed by a semi-unsupervised spectral clustering. For heavily contrasting setups, spectral standardization was necessary before transferring prediction models. Non-linear model types like Cubist and memory-based learning delivered more precise estimates because they seemed to be less sensitive to spectral variations than global partial least square regression. In summary, the results from this study can assist new laboratories in building spectroscopy capacity utilizing existing MIR spectral libraries and support the recent global efforts to make soil spectroscopy universally accessible with centralized or shared operating procedures
The Economic Benefits Resulting from the First 8 Years of the Global Programme to Eliminate Lymphatic Filariasis (2000â2007)
Lymphatic filariasis (LF), commonly known as âelephantiasisâ, is one of the world's most debilitating infectious diseases. In 83 countries worldwide, more than 1.3 billion people are at risk of infection with an estimated 120 million individuals already infected. A recent publication reviewing the health impact of the first 8 years of the Global Programme to Eliminate Lymphatic Filariasis (GPELF) demonstrated the enormous health benefits achieved in populations receiving annual mass drug administration (MDA), as a result of infection prevented, disease progression halted, and ancillary treatment of co-infections. To date, however, no studies have estimated the economic value of these health benefits, either to the individuals or the societies afflicted with LF. Our study estimates that US2.2 billion will be saved by the health systems of endemic countries. Treating endemic populations is possible at very low cost â particularly because of the generous drug donations from two pharmaceutical companies â but results in enormous economic benefits. Findings from this study yield a much clearer understanding the GPELF's full economic impact and strengthen the conviction that it is a âbest buyâ in global health
Design of the Prevention of Adult Caries Study (PACS): A randomized clinical trial assessing the effect of a chlorhexidine dental coating for the prevention of adult caries
<p>Abstract</p> <p>Background</p> <p>Dental caries is one of the primary causes of tooth loss among adults. It is estimated to affect a majority of Americans aged 55 and older, with a disproportionately higher burden in disadvantaged populations. Although a number of treatments are currently in use for caries prevention in adults, evidence for their efficacy and effectiveness is limited.</p> <p>Methods/Design</p> <p>The Prevention of Adult Caries Study (PACS) is a multicenter, placebo-controlled, double-blind, randomized clinical trial of the efficacy of a chlorhexidine (10% w/v) dental coating in preventing adult caries. Participants (n = 983) were recruited from four different dental delivery systems serving four diverse communities, including one American Indian population, and were randomized to receive either chlorhexidine or a placebo treatment. The primary outcome is the net caries increment (including non-cavitated lesions) from baseline to 13 months of follow-up. A cost-effectiveness analysis also will be considered.</p> <p>Discussion</p> <p>This new dental treatment, if efficacious and approved for use by the Food and Drug Administration (FDA), would become a new in-office, anti-microbial agent for the prevention of adult caries in the United States.</p> <p>Trial Registration Number</p> <p>NCT00357877</p
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