Apraxia: anaylsis of assessment and rehabilitation

This project explored two main areas: the assessment of apraxia and the intervention effectiveness in rehabilitation of the apraxic condition. This was achieved through a group study and a series of single case designs. Three experimental groups were used to investigate clinical tests and the kinematics ofmovement~ apraxic (n=17) and non-apraxic (n=13) left hemisphere damaged patients, and normal control subjects (n=ll). Using computergraphic techniques, the data provided evidence of disruption to the temporalspatial aspects of movement in apraxic people, which was not related to modality of testing, though some normal kinematic profiles were found within the apraxic group. Clinical assessments used to identify apraxia showed no relationship one with another which suggested each was identifying different aspects, or sub-types of a heterogeneous condition. Some tests were found to have low internal consistency, though inter-rater reliability through the observer-judgment process was high. A test devised for identifying agnosia was shown to relate to possible cognitive-perceptual processes or intact vision-to-action routes in the apraxic movement output. Dissociations found between clinical assessments for apraxia and kinematics of movement were explained in relation to different compensatory movement strategies employed by the apraxic patients, and/or as evidence for possible 'sub-types' of the apraxic condition. Analysis also suggested that different task demands might determine compensatory movement strategies and produce altered movement kinematics. This group study was followed by a series of single cases, two of which charted the 'natural history' process in recovery of apraxia using task performance and kinematic analysis as outcome measures. Evidence for spontaneous recovery over a six week period was shown in one case. Four single case ABA design investigations were then carried out on individuals with ideomotor and ideational apraxia to determine the effectiveness of intervention strategies. Specific sensory stimulation protocols were evaluated with no convincing evidence for effectiveness of the intervention, though both natural recovery improvements and learning effects were seen in the outcome measures. Variability of performance was a feature of all cases studied and could be considered a feature of the apraxic condition. Task break-down strategies were also evaluated in functional activities and demonstrated some effectiveness in a case of ideomotor apraxia, though a case with an ideational component indicated a more intractable condition. The strategy was not seen to generalise to other unpracticed tasks. In conclusion, the associations and dissociations found between movement kinematics and the clinical assessment tests for apraxia suggested the presence of 'sub-types' within the blanket diagnosis of the condition. Identification of such sub-types might be facilitated by the development of the agnosia test newly devised for this project. Finally, research into intervention effectiveness in apraxia calls for further investigation to determine what procedures might be used with different sub-types of the condition

Constructing Space and Time for Work and Family: A Structuration Perspective on Bed and Breakfasts

This qualitative study explored how bed and breakfast owners communicatively construct privacy while operating a business out of their personal home. One hundred eighty-two B&B owners from 20 U.S. states and 20 countries responded to an electronic qualitative questionnaire that, in part, explored the issue of privacy. Three themes emerged from the data, including: traditional organizational structures, perception of availability, and banking of time and space. These themes revealed that the owners of the nontraditional businesses relied upon recognizable organizational structures used in more traditional organizations to create and maintain private space and time. They also engaged in communication with their guests that simultaneously enabled and constrained their sense of privacy. Finally, the owners reported using intrapersonal communication strategies that allowed them to account for the lack of privacy during peak-season, though these strategies may have unintended consequences in terms of family roles and mental and physical health

Habitat-Based Intraguild Predation By Caribbean Reef Octopus Octopus Briareus on Juvenile Caribbean Spiny Lobster Panulirus Argus

Intraguild predation occurs when species simultaneously compete for resources and interact as predator and prey, which describes the interaction between juvenile Caribbean spiny lobster Panulirus argus and Caribbean reef octopus Octopus briareus in the Florida Keys, USA. Octopuses are notorious predators of decapod crustaceans, and their use of crevice shelters suggests that they may also compete for shelter with their lobster prey. Lobsters use mainly chemical cues to detect and avoid octopus, so we hypothesized that the negative association between these species may be as much the consequence of avoidance of a superior competitor as it is of direct predation. Surveys of lobsters and octopuses occupying artificial shelters at 19 hard-bottom sites confirmed that lobsters do not share dens with octopuses, and also show that lobster and octopus abundances are negatively correlated. Tethering experiments on a subset of those sites revealed that predation on lobster was indeed higher on sites with more octopuses. Results from mesocosm studies indicated that although juvenile lobsters do not attain a size refuge from octopus predation, the presence of alternative prey and lobster conspecifics reduces the risk of predation on lobster by octopus. Mesocosm experiments also showed that octopuses were the competitive dominants when shelter was limited. Thus, the negative association between lobster and octopus in the field appears to be driven by both predation and avoidance of octopus-rich sites by lobsters, rather than competition per se. However, crevice shelters suitable for juvenile lobster are limited in many hard-bottom areas in the Florida Keys, so areas where octopuses are abundant may further limit the local accessibility of shelters for juvenile spiny lobsters even if the direct effects of predation by octopus are minimal

Communicative Challenges in the Parent-Teacher Relationship Regarding Students with Special Needs

The current study explored the communicative challenges for parents and teachers of children with special needs. This qualitative study elicited interview data from both parents and teachers, and revealed that teachers were frustrated with parents not communicating regarding their special needs children in a way that could help prepare the teachers for the challenges they may face. Caregivers cited a lack of communication with teachers as problematic, as well as their perception of teacher as expert that led them to feel as if the teachers presented information in inaccessible ways. The findings are discussed through the lens of structuration theory

Radiocarbon Isotopic Classification of Deep Tropical Forest Soils

Tropical forest soils have an important role in global carbon (C) stocks. Small changes in the cycling of C could drastically affect atmospheric carbon dioxide (CO2) concentrations and active cycling of carbon in a forest community. Currently, little is understood of how tropical forest soils will respond to the increasing global temperatures. To examine the effects of warming/ drought on losses of older versus younger soil C pools, we implemented radiocarbon (14C) isotopic characterization of various soil plot samples and depths from the Luquillo Experimental Forest, Puerto Rico. 14C was measured using Accelerated Mass Spectrometry (AMS) from catalytically condensed carbon in order to examine the initial carbon stocks of the test plots. This examination was done in order to determine the age of the carbon in the soil plots before implementation of a long term warming experiment. In addition to determining the age of the soil C, the samples were submitted to a Density Fractionation Process to obtain varying aggregate fractions. These were also submitted to AMS for mean residence time of the C stocks. The soil 14C was significantly different in the Heavy and Free Light density fractions. This implies that the soil C turnover increases as you near the top depth of the soil pit samples. The results will be used to establish the initial composition of the sample soils for a warming experiment that will model future changes in climate

The anti-civic effects of popular culture on American teenagers

Civic participation and civic awareness is essential to the maintenance of American democracy. Strong civic communities serve to promote prosperity, ensure the resolution of collective problems, and act as a check upon the power of the state. But in 2002, there is little doubt that, across a wide range of indicators, America’s civic culture is in decline. Voting rates have fallen rapidly over the past several decades, and so too has trust in government. Equally troubling Ec002 Massachusetts Department of Education [email protected] Massachusetts Department of Education Massachusetts Department of Education Massachusetts Department of Education [email protected] Anders Lewis Jennifer Butler Melanie Winklosky Sandra Stotsky ESE Nº002 2002 is the disconcerting dearth of civic knowledge among American youths and the drop in participation, among all Americans, in numerous civic organizations, from church-affiliated groups to voluntary and fraternal organizations as well as women’s auxiliaries and unions. There are many causes for these trends. This paper examines how popular culture affects civic participation and civic awareness among a group of particularly active teenagers in Massachusetts. We found that popular culture has a generally negative influence on civic life but that its effects are not one-sided and that it can be mitigated by strong families and quality schools committed to an academic and civic education

Patterns of Use of Human Papillomavirus and Other Adolescent Vaccines in the United States

AbstractPurposeThe purpose of the study was to describe the patterns of use of universally recommended adolescent vaccines in the United States.MethodsWe identified 11-year-olds using the MarketScan insurance claims database (2009–2014). Human papillomavirus (HPV), tetanus-diphtheria-acellular pertussis (Tdap), and meningococcal (MenACWY) vaccination claims were identified using diagnosis and procedure codes. Generalized linear models estimated vaccination incidence rates and correlates of adolescent vaccination and timely vaccination.ResultsAmong 1,691,223 adolescents, receipt of Tdap (52.1%) and MenACWY (45.8%) vaccinations exceeded receipt of HPV vaccination (18.4%). While both sexes had similar Tdap and MenACWY vaccination proportions, girls received HPV vaccination more frequently than boys (21.9% vs. 15.1%). Adolescents received HPV vaccination later (mean age: 11.8 years) than Tdap or MenACWY vaccination (mean age: 11.2 years for both). Half of vaccinated adolescents received Tdap and MenACWY vaccination only; however, coadministration with HPV vaccine increased with birth cohort. Western adolescents had the highest incidence rates of HPV vaccination, and Southern adolescents had the lowest. Rural adolescents were less likely than urban adolescents to receive each vaccination except in the Northeast, where they were more likely to receive HPV vaccination (incidence rate ratio: 1.09, 95% confidence interval: 1.2005–1.13). Timely HPV vaccination was associated with female sex, urbanicity, Western residence, and later birth cohort.ConclusionsHPV vaccination occurred later than Tdap or MenACWY vaccination and was less frequent in boys and rural adolescents. Girls, Western and urban residents, and younger birth cohorts were more likely to receive timely HPV vaccination. Vaccine coadministration increased over time and may encourage timely and complete vaccination coverage

A Six-Planet System Around the Star HD 34445

We present a new precision radial velocity dataset that reveals a multi-planet system orbiting the G0V star HD 34445. Our 18-year span consists of 333 precision radial velocity observations, 56 of which were previously published, and 277 which are new data from Keck Observatory, Magellan at Las Campanas Observatory, and the Automated Planet Finder at Lick Observatory. These data indicate the presence of six planet candidates in Keplerian motion about the host star with periods of 1057, 215, 118, 49, 677, and 5700 days, and minimum masses of 0.63, 0.17, 0.1, 0.05, 0.12 and 0.38 Jupiter masses respectively. The HD 34445 planetary system, with its high degree of multiplicity, its long orbital periods, and its induced stellar radial velocity half-amplitudes in the range $2 \,{\rm m\, s^{-1}} \lesssim K \lesssim 5\,{\rm m\, s^{-1}}$ is fundamentally unlike either our own solar system (in which only Jupiter and Saturn induce significant reflex velocities for the Sun), or the Kepler multiple-transiting systems (which tend to have much more compact orbital configurations)Comment: 10 pages, 11 figure