An acoustic phonetic analysis of African American English: A comparative study of two dialects

In this thesis, I contribute acoustic phonetic data and analysis to the study of African American English (AAE). For this research, I collected speech samples of self-identified AAE speakers and speakers of a dominant coexisting dialect, the Northern Cities Shift (NCS). I analyze these samples to determine if vowel quality and vowel duration are consistently and predictably varied between the two dialects. Labov\u27s Chain Shift Principles are used as the context for the results. In my analysis, I find that both vowel quality and duration are different between AAE and NCS in ways previously undocumented in the linguistic literature. The quality analysis relies on evidence from the vowel [ æ ]. I find that AAE shares a distinct quality feature of NCS, raised [ æ ], despite the fact that this feature is said not to be present in AAE. This vowel functions as the pivot point for the chain shift in the NCS data but does not cause a vowel shift in AAE data analyzed in this thesis. In the analysis of vowel length, I rely on data from the front tense/lax vowel pairs, [ i ; ] and [ e ; ] in both dialects. ɪ ɛ I find that vowel length is consistently longer in AAE than in NCS. Additionally, I find that in NCS, the tense/lax pairs maintain a difference in length in which the tense vowels are longer than the lax vowels. In AAE, I find that the tense vowels are shorter than the lax vowels. I conclude that the length differences found in these data sets indicate that Labov\u27s feature [ +/- peripheral ] is not a feature of the AAE front tense/lax vowel pairs, [ i ; ɪ ] and [ e ; ɛ ] and that this prevents a vowel shift in AAE that should occur in response to the presence of the raised [ æ ]. ii

Teachers Building Dwelling Thinking with Slideware

Teacher-student discourse is increasingly mediated through, by and with information and communication technologies: in-class discussions have found new, textually-rich venues online; chalk and whiteboard lectures are rapidly giving way to PowerPoint presentations. Yet, what does this mean experientially for teachers? This paper reports on a phenomenological study investigating teachers’ lived experiences of PowerPoint in post-secondary classrooms. As teachers become more informed about the affordances of information and communication technology like PowerPoint and consequently take up and use these tools in their classrooms, their teaching practices, relations with students, and ways of interpreting the world are simultaneously in-formed – conformed, deformed and reformed – by the given technology-in-use. The paper is framed in light of Martin Heidegger’s “Building Dwelling Thinking” (1951) and “The Thing” (1949). In these writings, Heidegger shows how a thing opens a new world to us, revealing novel structures of experience and meaning, and inviting us to a different style of being, thinking and doing. Indo-Pacific Journal of Phenomenology, May 2010, Volume 10, Edition

Incorporating Data Link Messaging into a Multi-function Display for General Aviation Aircraft

One objective of the Small Aircraft Transportation System (SATS) Project is to increase the capacity and utilization of small non-towered, non-radar equipped airports by transferring traffic management activities to an automated system and separation responsibilities to general aviation (GA) pilots. This paper describes the development of a research multi-function display (MFD) to support the interaction between pilots and an automated Airport Management Module (AMM). Preliminary results of simulation and flight tests indicate that adding the responsibility of monitoring other traffic for self-separation does not increase pilots subjective workload levels. Pilots preferred using the enhanced MFD to execute flight procedures, reporting improved situation awareness over conventional instrument flight rules (IFR) procedures

Human Factors Considerations for Performance-Based Navigation

A transition toward a performance-based navigation system is currently underway in both the United States and around the world. Performance-based navigation incorporates Area Navigation (RNAV) and Required Navigation Performance (RNP) procedures that do not rely on the location of ground-based navigation aids. These procedures offer significant benefits to both operators and air traffic managers. Under sponsorship from the Federal Aviation Administration (FAA), the National Aeronautics and Space Administration (NASA) has undertaken a project to document human factors issues that have emerged during RNAV and RNP operations and propose areas for further consideration. Issues were found to include aspects of air traffic control and airline procedures, aircraft systems, and procedure design. Major findings suggest the need for human factors-specific instrument procedure design guidelines. Ongoing industry and government activities to address air-ground communication terminology, procedure design improvements, and chart-database commonality are strongly encouraged

Human Factors Considerations for Area Navigation Departure and Arrival Procedures

Area navigation (RNAV) procedures are being implemented in the United States and around the world as part of a transition to a performance-based navigation system. These procedures are providing significant benefits and have also caused some human factors issues to emerge. Under sponsorship from the Federal Aviation Administration (FAA), the National Aeronautics and Space Administration (NASA) has undertaken a project to document RNAV-related human factors issues and propose areas for further consideration. The component focusing on RNAV Departure and Arrival Procedures involved discussions with expert users, a literature review, and a focused review of the NASA Aviation Safety Reporting System (ASRS) database. Issues were found to include aspects of air traffic control and airline procedures, aircraft systems, and procedure design. Major findings suggest the need for specific instrument procedure design guidelines that consider the effects of human performance. Ongoing industry and government activities to address air-ground communication terminology, design improvements, and chart-database commonality are strongly encouraged. A review of factors contributing to RNAV in-service errors would likely lead to improved system design and operational performance

Empirical Questionnaire Methods for Fund-Raising Campaign Preparedness in Extension

Amid waning public financial support for Extension program offerings, highly strategic and professional fund-raising practices are necessary for gaining momentum among private philanthropists and closing the fiscal gap. University of Missouri Extension conducted a precampaign survey that invited feedback from stakeholders to inform Extension leadership on how to execute fund-raising initiatives tailored to the audience. As a result, University of Missouri Extension is better positioned to serve the needs of its constituents by recruiting significant private financial support according to donors\u27 unique interests

Community Violence Exposure and Positive Youth Development in Urban Youth

Youth in urban environments are exposed to community violence, yet some do well and continue on a positive developmental trajectory. This study investigated the relationships between lifetime community violence exposure (including total, hearing about, witnessing, and victimization), family functioning, and positive youth development (PYD) among 110 urban youth ages 10-16 years (54% female) using a paper and pen self-report survey. This cross-sectional study was part of an interdisciplinary community-based participatory research effort in West/Southwest Philadelphia. Almost 97% of the sample reported some type of community violence exposure. Controlling for presence of mother in the home and presence of father in the home, separate linear regression models for PYD by each type of community violence exposure indicated that gender and family functioning were significantly associated with PYD. None of the types of community violence exposure were significant in the models. Significant interactions between gender and presence of mother in the home and gender and family functioning helped better explain these relationships for some of the types of community violence exposure. Presence of mother was associated with higher PYD for girls, but not for boys. Boys with poor family functioning had lower PYD than girls with poor family functioning. This study helps to better delineate relationships between CVE and PYD by adding new knowledge to the literature on the role of family functioning. Points of intervention should focus on families, with attention to parental figures in the home and overall family functioning

Views and experiences of visually impaired older people and exercise instructors about the Falls Management Exercise programme: a qualitative study

Purpose: To gain insight into visually impaired older people’s views regarding acceptability of an adapted Falls Management Exercise programme, and to explore Postural Stability Instructors’s perspectives on provision of the programme. Materials and methods: Data from this qualitative study comprised interviews with nine visually impaired older people and two Postural Stability Instructors. Data were analysed using thematic analysis. Results: Themes identified from interviews with the participants related to self-perception, exercise-related factors and facilitators to participation. Participants positioned themselves as not old or at risk of falls, felt exercises were not challenging enough and recommended that home exercise materials be offered in individually tailored formats. Themes identified from interviews with the instructors related to programme adaptations for visual impairments, exercises and facilitators to participation. Instructors recommended stratifying groups into levels of ability. Social time after the exercise sessions was deemed key in programme adherence by both participants and instructors. Conclusions: Visually impaired older people have similar barriers and facilitators to group-based falls prevention sessions as older people without visual impairment, but seem to have more difficulties in motivation to exercise at home. Both participants and instructors felt the main facilitator to adherence to group exercise sessions was the social time

Effects of emotion recognition training on mood among individuals with high levels of depressive symptoms: study protocol for a randomised controlled trial.

BACKGROUND: We have developed a new paradigm that targets the recognition of facial expression of emotions. Here we report the protocol of a randomised controlled trial of the effects of emotion recognition training on mood in a sample of individuals with depressive symptoms over a 6-week follow-up period. METHODS/DESIGN: We will recruit 190 adults from the general population who report high levels of depressive symptoms (defined as a score ≥ 14 on the Beck Depression Inventory-II). Participants will attend a screening session and will be randomised to intervention or control procedures, repeated five times over consecutive days (Monday to Friday). A follow-up session will take place at end-of -treatment, 2-weeks and 6-weeks after training. Our primary study outcome will be depressive symptoms, Beck Depression Inventory- II (rated over the past two weeks). Our secondary outcomes are: depressive symptoms, Hamilton Rating Scale for Depression; anxiety symptoms, Beck Anxiety Inventory (rated over the past month); positive affect, Positive and Negative Affect Schedule (rated as 'how you feel right now'); negative affect, Positive and Negative Affect Schedule (rated as 'how you feel right now'); emotion sensitivity, Emotion Recognition Task (test phase); approach motivation and persistence, the Fishing Game; and depressive interpretation bias, Scrambled Sentences Test. DISCUSSION: This study is of a novel cognitive bias modification technique that targets biases in emotional processing characteristic of depression, and can be delivered automatically via computer, Internet or Smartphone. It therefore has potential to be a valuable cost-effective adjunctive treatment for depression which may be used together with more traditional psychotherapy, cognitive-behavioural therapy and pharmacotherapy. TRIAL REGISTRATION: Current Controlled Trials: ISRCTN17767674.RIGHTS : This article is licensed under the BioMed Central licence at http://www.biomedcentral.com/about/license which is similar to the 'Creative Commons Attribution Licence'. In brief you may : copy, distribute, and display the work; make derivative works; or make commercial use of the work - under the following conditions: the original author must be given credit; for any reuse or distribution, it must be made clear to others what the license terms of this work are

Incorporating Data Link Features into a Multi-Function Display to Support Self-Separation and Spacing Tasks for General Aviation Pilots

One objective of the Small Aircraft Transportation System (SATS) Higher Volume Operations (HVO) project is to increase the capacity and utilization of small non-towered, non-radar equipped airports by transferring traffic management activities to an automated Airport Management Module (AMM) and separation responsibilities to general aviation (GA) pilots. Implementation of this concept required the development of a research Multi-Function Display (MFD) to support the interactive communications between pilots and the AMM. The interface also had to accommodate traffic awareness, self-separation, and spacing tasks through dynamic messaging and symbology for flight path conformance and conflict detection and alerting (CDA). The display served as the mechanism to support the examination of the viability of executing instrument operations designed for SATS designated airports. Results of simulation and flight experiments conducted at the National Aeronautics and Space Administration's (NASA) Langley Research Center indicate that the concept, as facilitated by the research MFD, did not increase pilots subjective workload levels or reduce their situation awareness (SA). Post-test usability assessments revealed that pilots preferred using the enhanced MFD to execute flight procedures, reporting improved SA over conventional instrument flight rules (IFR) procedures