270 research outputs found
Communication Training for Academic Advising Workshop
This project reviewed the history and roles of academic advisors in higher education. A literature review is presented. A workshop was developed with syllabi, A/V materials, and course assignments. (Abstract by OPUS staff
National Certification Initiative for Employment Support Professionals: Promoting Quality Integrated Employment Services
This article describes a recent certification initiative to build an international network of professionals who have the knowledge and skills to provide quality integrated employment services to individuals with a variety of disabilities. An overview of the history and conceptual framework guiding the development of the Employment Support Professional Certification Program will be followed by a presentation of findings from a preliminary survey study of 93 professionals who have been certified. Survey respondents identified both personal and professional motivations for pursuing the Certified Employment Support Professional (CESP) designation, including the desire to (a) achieve a sense of accomplishment and personal satisfaction, (b) demonstrate a professional standard of competence and commitment to the profession, and (c) garner professional credibility and enhanced opportunities for career advancement. The authors describe ongoing efforts and recommendations for validating the credentialing program and for increasing the number of certified professionals equipped to establish and expand equitable employment opportunities for individuals with disabilities
Label-efficient Contrastive Learning-based model for nuclei detection and classification in 3D Cardiovascular Immunofluorescent Images
Recently, deep learning-based methods achieved promising performance in
nuclei detection and classification applications. However, training deep
learning-based methods requires a large amount of pixel-wise annotated data,
which is time-consuming and labor-intensive, especially in 3D images. An
alternative approach is to adapt weak-annotation methods, such as labeling each
nucleus with a point, but this method does not extend from 2D histopathology
images (for which it was originally developed) to 3D immunofluorescent images.
The reason is that 3D images contain multiple channels (z-axis) for nuclei and
different markers separately, which makes training using point annotations
difficult. To address this challenge, we propose the Label-efficient
Contrastive learning-based (LECL) model to detect and classify various types of
nuclei in 3D immunofluorescent images. Previous methods use Maximum Intensity
Projection (MIP) to convert immunofluorescent images with multiple slices to 2D
images, which can cause signals from different z-stacks to falsely appear
associated with each other. To overcome this, we devised an Extended Maximum
Intensity Projection (EMIP) approach that addresses issues using MIP.
Furthermore, we performed a Supervised Contrastive Learning (SCL) approach for
weakly supervised settings. We conducted experiments on cardiovascular datasets
and found that our proposed framework is effective and efficient in detecting
and classifying various types of nuclei in 3D immunofluorescent images.Comment: 11 pages, 5 figures, MICCAI Workshop Conference 202
Climate Stories: South Carolina, Volume 1
In this volume, you will hear from South Carolina residents about how they have been sensing climate change throughout their lifetimes. All stories have been anonymized with the use of pseudonyms, except where participants asked for their story to be associated with their name
Friendships and Family Support Reduce Subsequent Depressive Symptoms in At-Risk Adolescents.
BACKGROUND: Early life stress (ELS) consists of child family adversities (CFA: negative experiences that happened within the family environment) and/or peer bullying. ELS plays an important role in the development of adolescent depressive symptoms and clinical disorders. Identifying factors that may reduce depressive symptoms in adolescents with ELS may have important public mental health implications. METHODS: We used structural equation modelling and examined the impact of adolescent friendships and/or family support at age 14 on depressive symptoms at age 17 in adolescents exposed to ELS before age 11. To this end, we used structural equation modelling in a community sample of 771 adolescents (322 boys and 477 girls) from a 3 year longitudinal study. Significant paths in the model were followed-up to test whether social support mediated or moderated the association between ELS and depressive symptoms at age 17. RESULTS: We found that adolescent social support in adolescence is negatively associated with subsequent depressive symptoms in boys and girls exposed to ELS. Specifically, we found evidence for two mediational pathways: In the first pathway family support mediated the link between CFA and depressive symptoms at age 17. Specifically, CFA was negatively associated with adolescent family support at age 14, which in turn was negatively associated with depressive symptoms at age 17. In the second pathway we found that adolescent friendships mediated the path between peer bullying and depressive symptoms. Specifically, relational bullying was negatively associated with adolescent friendships at age 14, which in turn were negatively associated with depressive symptoms at age 17. In contrast, we did not find a moderating effect of friendships and family support on the association between CFA and depressive symptoms. CONCLUSIONS: Friendships and/or family support in adolescence mediate the relationship between ELS and late adolescent depressive symptoms in boys and girls. Therefore, enhancing affiliate relationships and positive family environments may benefit the mental health of vulnerable youth that have experienced CFA and/or primary school bullying.AlvH was supported by a Rubicon Fellowship from the Netherlands Organization for Scientific Research. IMG was supported by a Wellcome Trust programme grant, and grants from the NIHR Collaboration for Leadership in Applied Health Research, and Care (CLAHRC) for Cambridgeshire and Peterborough; IMG, AlvH, and JLG were supported through a grant from Kidscompany UK; PBJ was supported by Wellcome Trust grants, and National Institute for Health Research grant; RAK is supported by a Wellcome grant; JLG reports grants from ESRC, grants from MRC, grants, and personal fees from Royal College of Speech, and Language therapists.This is the final version of the article. It first appeared from PLOS via http://dx.doi.org/10.1371/journal.pone.015371
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Annual variations in the near-Earth solar wind
Earth’s orbit and rotation produces systematic variations in geomagnetic activity, most notably via the changing orientation of the dayside magnetospheric magnetic field with respect to the heliospheric magnetic field (HMF). Aside from these geometric effects, it is generally assumed that the solar wind in near-Earth is uniformly sampled. But systematic changes in the intrinsic solar wind conditions in near-Earth space could arise due to the annual variations in Earth heliocentric distance and heliographic latitude. In this study, we use 24 years of Advanced Composition Explorer data to investigate the annual variations in the scalar properties of the solar wind, namely the solar wind proton density, the radial solar wind speed and the HMF intensity. All parameters do show some degree of systematic annual variation, with amplitudes of around 10 to 20%. For HMF intensity, the variation is in phase with the Earth’s heliocentric distance variation, and scaling observations for distance largely explains the observed variation. For proton density and solar wind speed, however, the phase of the annual variation is inconsistent with Earth’s heliocentric distance. Instead, we attribute the variations in speed and density to Earth’s heliographic latitude variation and systematic sampling of higher speed solar wind at higher latitudes. Indeed, these annual variations are most strongly ordered at solar minimum. Conversely, combining scalar solar wind parameters to produce estimates of dynamic pressure and potential power input to the magnetosphere results in solar maximum exhibiting a greater annual variation, with an amplitude of around 40%. This suggests Earth’s position in the heliosphere makes a significant contribution to annual variations in space weather, in addition to the already well-studied geometric effects
Human α2β1HI CD133+VE epithelial prostate stem cells express low levels of active androgen receptor
Stem cells are thought to be the cell of origin in malignant transformation in many tissues, but their role in human prostate carcinogenesis continues to be debated. One of the conflicts with this model is that cancer stem cells have been described to lack androgen receptor (AR) expression, which is of established importance in prostate cancer initiation and progression. We re-examined the expression patterns of AR within adult prostate epithelial differentiation using an optimised sensitive and specific approach examining transcript, protein and AR regulated gene expression. Highly enriched populations were isolated consisting of stem (α(2)β(1)(HI) CD133(+VE)), transiently amplifying (α(2)β(1)(HI) CD133(-VE)) and terminally differentiated (α(2)β(1)(LOW) CD133(-VE)) cells. AR transcript and protein expression was confirmed in α(2)β(1)(HI) CD133(+VE) and CD133(-VE) progenitor cells. Flow cytometry confirmed that median (±SD) fraction of cells expressing AR were 77% (±6%) in α(2)β(1)(HI) CD133(+VE) stem cells and 68% (±12%) in α(2)β(1)(HI) CD133(-VE) transiently amplifying cells. However, 3-fold lower levels of total AR protein expression (peak and median immunofluorescence) were present in α(2)β(1)(HI) CD133(+VE) stem cells compared with differentiated cells. This finding was confirmed with dual immunostaining of prostate sections for AR and CD133, which again demonstrated low levels of AR within basal CD133(+VE) cells. Activity of the AR was confirmed in prostate progenitor cells by the expression of low levels of the AR regulated genes PSA, KLK2 and TMPRSS2. The confirmation of AR expression in prostate progenitor cells allows integration of the cancer stem cell theory with the established models of prostate cancer initiation based on a functional AR. Further study of specific AR functions in prostate stem and differentiated cells may highlight novel mechanisms of prostate homeostasis and insights into tumourigenesis
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