2,686 research outputs found
Implementing Cognitive Behavioral Therapy into Post Cerebral Vascular Accident Rehabilitation: An Occupational Therapy Guideline
Strokes are a leading cause of disability in the United States, with approximately 7 million adults currently living with a stroke. The incidence rate of strokes is expected to significantly increase by 2030, which demonstrates a need for this population to receive quality care (Billinger et al., 2014). There is extensive research on how occupational therapists provide skilled interventions for the physical and cognitive deficits of a stroke; however, a gap in the literature exists regarding treatment of the psychosocial impairments an individual may experience post-stroke. Specifically, there is limited research on how to treat post-stroke depression (PSD) and post-stroke anxiety (PSA), which are two prevalent psychosocial impairments resulting from a stroke, that lead to an interruption in occupational performance. Cognitive-behavioral therapy (CBT) is a common frame of reference implemented in mental health practice; the authors investigated how CBT techniques could be implemented into post-stroke therapy to target PSD and PSA, thereby leading to increased occupational performance.
The authors completed an extensive literature review before creating the product; this included the overall need for addressing PSA and PSD in typical post-stroke rehabilitation, and evidence supporting the use of CBT with this population. The literature review was completed using reliable databases and journals that generated articles relevant to the proposed topic and profession. Upon completion of the literature review, the authors created the guide following the occupational therapy process addressed within the Occupational Therapy Practice Framework: Domain and Process (2014). The most evidence-based strategies and interventions were included within the guide.
Additionally, the product was based on the Model of Human Occupation (MOHO), and contains five sections. Part 1 is an overview of the psychosocial limitations that may present after a stroke, and how CBT can be incorporated into occupational therapy interventions as an adjunctive method to enhance the therapy process and outcomes. Part II provides occupational therapists with assessments that are appropriate to use with individuals post-stroke. Part III is an overview of occupational therapy intervention planning strategies to facilitate collaboration between the client and therapist. Part IV is the actual guide, and contains several CBT strategies, handouts, and worksheets that can assist the occupational therapist in providing the client with helpful tools to learn more about and overcome the psychosocial impairments they are experiencing. This guide is not intended to replace existing methods of occupational therapy intervention, but rather to serve as a supplement for providing a more comprehensive approach to post-stroke rehabilitation. Part V is a summary of the materials presented in the guide, as well as explaining the need for continuing research. The overall purpose of this guide was to facilitate occupational performance and functioning among this post-stroke population by occupational therapists using CBT strategies as a means for treating post-stroke depression (PSD) and post-stroke anxiety (PSA)
Good Laboratory Practices Are Not Synonymous with Good Scientific Practices, Accurate Reporting, or Valid Data
Reproduced with permission from Environmental Health Perspectives. DOI:10.1289/ehp.0901495In her commentary, Tyl (2009) responded to our criticism (Myers et al. 2009) of her bisphenol A (BPA) research (Tyl et al. 2008), and she defended the reliance on Good Laboratory Practices (GLP) in animal studies concerning risks posed by chemicals. Her commentary, however, provides additional evidence that her research on BPA is flawed and that GLP can be unreliable
One Team’s Journey with iRubrics
This study explains the process of incorporating electronic grading rubrics into multiple sections of one Digital Literacy course at one online university. Researchers share their experience transitioning from paper rubrics to electronic iRubrics linked directly into each assignment, a process that involved evaluating existing course rubrics, revising them to align with assignments and institutional learning outcomes (ILOs), running pilot courses using the automated iRubrics tool, and training faculty on the use of these new rubrics and the iRubrics tool. The experiences suggest that using iRubrics instead of paper rubrics can significantly increase the efficiency of grading and offer quick access to performance reports based on ILOs and program objectives
Mass and luminosity evolution of young stellar objects
A model of protostar mass and luminosity evolution in clusters gives new
estimates of cluster age, protostar birthrate, accretion rate and mean
accretion time. The model assumes constant protostar birthrate, core-clump
accretion, and equally likely accretion stopping. Its parameters are set to
reproduce the initial mass function, and to match protostar luminosity
distributions in nearby star-forming regions. It obtains cluster ages and
birthrates from the observed numbers of protostars and pre-main sequence (PMS)
stars, and from the modal value of the protostar luminosity. In 31 embedded
clusters and complexes the global cluster age is 1-3 Myr, matching available
estimates based on optical spectroscopy and evolutionary tracks. This method of
age estimation is simpler than optical spectroscopy, and is more useful for
young embedded clusters where optical spectrocopy is not possible. In the
youngest clusters, the protostar fraction decreases outward from the densest
gas, indicating that the local star-forming age increases outward from a few
0.1 Myr in small protostar-dominated zones to a few Myr in large PMS-dominated
zones.Comment: To appear in The Astrophysical Journal, Part
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The Spitzer c2d Survey Of Nearby Dense Cores. X. Star Formation In L673 And Cb188
L673 and CB188 are two low-mass clouds isolated from large star-forming regions that were observed as part of the Spitzer Legacy Project "From Molecular Clouds to Planet Forming disks" (c2d). We identified and characterized all the young stellar objects (YSOs) of these two regions and modeled their spectral energy distributions (SEDs) to examine whether their physical properties are consistent with values predicted from the theoretical models and with the YSO properties in the c2d survey of larger clouds. Overall, 30 YSO candidates were identified by the c2d photometric criteria, 27 in L673 and 3 in CB188. We confirm the YSO nature of 29 of them and remove a false Class III candidate in L673. We further present the discovery of two new YSO candidates, one Class 0 and another possible Class I candidate in L673, therefore bringing the total number of YSO candidates to 31. Multiple sites of star formation are present within L673, closely resembling other well-studied c2d clouds containing small groups such as B59 and L1251B, whereas CB188 seems to consist of only one isolated globule-like core. We measure a star formation efficiency (SFE) of 4.6%, which resembles the SFE of the larger c2d clouds. From the SED modeling of our YSO sample we obtain envelope masses for Class I and Flat spectrum sources of 0.01-1.0 M-circle dot. The majority of Class II YSOs show disk accretion rates from 3.3 x 10(-10) to 3 x 10(-8) M-circle dot yr(-1) and disk masses that peak at 10(-4) to 10(-3) M-circle dot. Finally, we examined the possibility of thermal fragmentation in L673 as the main star-forming process. We find that the mean density of the regions where significant YSO clustering occurs is of the order of similar to 10(5) cm(-3) using 850 mu m observations and measure a Jeans Length that is greater than the near-neighbor YSO separations by approximately a factor of 3-4. We therefore suggest that other processes, such as turbulence and shock waves, may have had a significant effect on the cloud's filamentary structure and YSO clustering.University of SouthamptonNASA 1279198, 1288806, 1365763Jet Propulsion Laboratory, California Institute of TechnologyAstronom
Design and Analysis of a Dynamically Configured Log-based Distributed Security Event Detection Methodology
Military and defense organizations rely upon the security of data stored in, and communicated through, their cyber infrastructure to fulfill their mission objectives. It is essential to identify threats to the cyber infrastructure in a timely manner, so that mission risks can be recognized and mitigated. Centralized event logging and correlation is a proven method for identifying threats to cyber resources. However, centralized event logging is inflexible and does not scale well, because it consumes excessive network bandwidth and imposes significant storage and processing requirements on the central event log server. In this paper, we present a flexible, distributed event correlation system designed to overcome these limitations by distributing the event correlation workload across the network of event-producing systems. To demonstrate the utility of the methodology, we model and simulate centralized, decentralized, and hybrid log analysis environments over three accountability levels and compare their performance in terms of detection capability, network bandwidth utilization, database query efficiency, and configurability. The results show that when compared to centralized event correlation, dynamically configured distributed event correlation provides increased flexibility, a significant reduction in network traffic in low and medium accountability environments, and a decrease in database query execution time in the high-accountability case
Mergers in Double-Peaked [O III] Active Galactic Nuclei
As a natural consequence of galaxy mergers, binary active galactic nuclei
(AGNs) should be commonplace. Nevertheless, observational confirmations are
rare, especially for binaries with separations less than ten kpc. Such a system
may show two sets of narrow emission lines in a single spectrum owing to the
orbital motion of the binary. We have obtained high-resolution near-infrared
images of 50 double-peaked [O III] 5007 AGNs with the Keck II laser guide star
adaptive optics system. The Sloan Digital Sky Survey sample is compiled from
the literature and consists of 17 type-1 AGNs between 0.18 < z < 0.56 and 33
type-2 AGNs between 0.03 < z < 0.24. The new images reveal eight type-1 and
eight type-2 sources that are apparently undergoing mergers. These are strong
candidates of kpc-scale binary AGNs, because they show multiple components
separated between 0.6 and 12 kpc and often disturbed morphologies. Because most
of the type-1s are at higher redshifts than the type-2s, the higher merger
fraction of type-1s (47+/-20%) compared to that of type-2s (24+/-10%) can be
attributed to the general evolution of galaxy merger fraction with redshift.
Furthermore, we show that AGN mergers are outliers of the M_BH-sigma relation
because of over-estimated stellar velocity dispersions, illustrating the
importance of removing mergers from the samples defining the M_BH-sigma
relations. Finally, we find that the emission-line properties are
indistinguishable for spatially resolved and unresolved sources, emphasizing
that scenarios involving a single AGN can produce the same double-peaked line
profiles and they account for at least 70% of the double-peaked [O III] AGNs.Comment: ApJ accepted with major revisions, main results unchanged. 7 pages, 5
figures, 1 table, emulateapj styl
Gravitational Microlensing of a Reverberating Quasar Broad Line Region - I. Method and Qualitative Results
The kinematics and morphology of the broad emission line region (BELR) of
quasars are the subject of significant debate. The two leading methods for
constraining BELR properties are microlensing and reverberation mapping. Here
we combine these two methods with a study of the microlensing behaviour of the
BELR in Q2237+0305, as a change in continuum emission (a "flare") passes
through it. Beginning with some generic models of the BELR - sphere, bicones,
disk - we slice in velocity and time to produce brightness profiles of the BELR
over the duration of the flare. These are numerically microlensed to determine
whether microlensing of reverberation mapping provides new information about
the properties of BELRs. We describe our method and show images of the models
as they are flaring, and the unlensed and lensed spectra that are produced.
Qualitative results and a discussion of the spectra are given in this paper,
highlighting some effects that could be observed. Our conclusion is that the
influence of microlensing, while not strong, can produce significant observable
effects that will help in differentiating the properties of BELRs.Comment: 17 pages, 14 low resolution figures, 1 table, accepted for MNRAS. v2:
Corrected velocities p16, 8 to 0.08, 9 to 0.0
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