500 research outputs found
What are Some Best HR Practices in Response to Natural Disasters in Terms of Training and Communication?
Today’s world is defined by, among other characteristics, borderless and unconventional threats, global challenges, and fast-paced change. HR has not been initially designed to organize or oversee crisis management. However HR’s role in training and development can contribute to an organization’s overall crisis management capacity, as well as to effective crisis communication in particular. Studies show that crisis-prepared companies have fewer crises to grapple with, stay in business longer and fare better in financial terms
When Developing a Career Path, What are the Key Elements to Include?
Question: When developing a career path from scratch, what are the key elements to include in the design process and what factors lead to a successful implementation
El fortalecimiento de las capacidades desde el interior hacia el exterior
En 2004, los representantes de 15 Sociedades de la Cruz
Roja y la Media Luna Roja de África y el personal del Instituto
Fritz se reunieron en Johannesburgo (Sudáfrica) para
promover la postura cada vez más mayoritaria de que los
problemas humanitarios del continente africano no pueden
resolverse desde el exterior
Off-Road Vehicle Recreation in the West: Implications of a Wyoming Analysis
Community/Rural/Urban Development, Resource /Energy Economics and Policy,
Beyond the Hype:Digital Transformations in Global Land, Housing, and Property
This theme issue investigates how 21st-century digital innovations are changing the nature and value of land, housing, and property. Contributors bring together an array of cases to understand how digitization is remaking land and housing on a global scale and, in turn, how existing property relations structure digital transformations in particular geographies. In this introduction to the theme issue, we outline how hype can be used as an analytical entry point to characterize the collection’s contribution, demonstrating how hype elides unequal relations of land and labor while stoking speculation in immovable property, even as it creates new markets for less tangible assets—whether rental data or virtual plots—that usher in new global connections and familiar market dynamics
Entendendo a escassez de professores: Uma análise da oferta e demanda de professores nos Estados Unidos
This paper reviews the sources of and potential solutions to teacher shortages in the United States. It describes the sources of current and projected increases in teacher demand relative to enrollments, shifts in pupil-teacher ratios, and attrition. It places these in relation to recent declines in teacher supply and evaluates evidence of shortages in fields like mathematics, science, special education, and educators for English learners, as well as in particular parts of the country. Our analysis using national databases through 2016 predicted an estimated annual teacher shortage of approximately 112,000 teachers in 2017-18. Our recent review of state teacher workforce reports estimated 109,000 individuals were uncertified for their teaching positions in the US in 2017, roughly approximating our projections. We discuss the factors driving shortages and, based on previous research, identify responses that might ameliorate these trends.Este artículo analiza las fuentes de escasez de maestros en los Estados Unidos y posibles soluciones para este situación. Describe las fuentes de aumentos actuales y proyectados en la demanda de maestros en relación a las matrículas, cambios en las proporciones alumno- maestro y la atrición. En relación con la disminución reciente en la oferta de maestros, encontramos evidencia de escasez en campos como matemáticas, ciencias, educación especial y educadores para estudiantes de inglés, así como en partes específicas del país. Nuestro análisis utilizando bases de datos nacionales hasta 2016 predijo una escasez anual estimada de aproximadamente 112.000 profesores en 2017-18. Nuestra reciente revisión de los informes de la fuerza de trabajo de maestros del estado estimó que 109.000 personas no fueron certificadas para sus posiciones de enseñanza en los EE.UU. En 2017, acercándose a nuestras proyecciones. Discutimos los factores que impulsan la escasez y, sobre la base de investigaciones anteriores, identificamos respuestas que pueden mejorar esas tendencias.Este artigo analisa as fontes de escassez de professores nos Estados Unidos e possíveis soluções para este dliema. Ele descreve as fontes de aumentos atuais e projetados na demanda de professores em relação às matrículas, mudanças nas proporções aluno-professor e atrito. Em relação aos declínios recentes na oferta de professores, encontramos evidências de escassez em áreas como matemática, ciências, educação especial e educadores para alunos de inglês, bem como em partes específicas do país.Nossa análise usando bases de dados nacionais até 2016 previu uma escassez anual estimada de aproximadamente 112.000 professores em 2017-18. Nossa recente revisão dos relatórios da força de trabalho de professores do estado estimou que 109.000 pessoas não foram certificadas para suas posições de ensino nos EUA. Em 2017, aproximando-se de nossas projeções. Discutimos os fatores que impulsionam a escassez e, com base em pesquisas anteriores, identificamos respostas que podem melhorar essas tendências
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Comparability of Survey Measures in Hard to Reach Populations: Methods and Recommendations
The goal of this paper is to discuss practical recommendations for collecting data with hard to reach populations and data comparability. We also discuss the importance of piloting and community involvement in the process using an example from the Tribal Prevention Initiative (TiPI), a culturally-based substance abuse prevention program for American Indian youth from six tribes in Montana and Wyoming. We piloted a survey based on standardized Youth Risk Factor Behavioral Surveillance Survey questions (YRBSS) in tribal communities to document substance use and norms. The revised TiPI survey resulted in a 16-question survey (N=711). We compared TiPI data with the YRBSS data from 2015 to 2019. Descriptive statistics (frequency (n) and percent (%) or mean (M) and standard deviation (SD)) were used to analyze data. Results indicate that substance use is generally lower among TiPI youth than YRBS youth in reservation and urban locations with the exception of middle school marijuana use and urban binge drinking. To improve public health and document progress toward healthy future generations, communities must be aware of the unique challenges of using national surveys like the YRBSS as comparison data, and the strengths of primary data collection driven by program needs
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Passive Integrated Transponder Tags: Review of Studies on Warmwater Fishes With Notes on Additional Species
Although numerous studies have assessed retention and survival of passive integrated transponder (PIT) tags, data are scattered and information gaps remain for many diminutive fishes. Our study objectives were to 1) systematically review PIT tag studies and summarize retention, growth, and survival data for warmwater fishes; and 2) conduct a laboratory study to evaluate the retention, survival, and growth effects of intracoelomic-placed, half duplex PIT tags on six small-bodied species common to warmwater streams. Our systematic review suggested small sample sizes were common within PIT tag retention and survival studies (39% with n ≤ 20) and that many experiments (15%, 14 of 97) failed to use control fish as part of their evaluations. Studies focused primarily on short-term changes (15 d to 2 y) in tag retention and survival. Tag retention was equal to or greater than 90% in 85% of the experiments reviewed and median survival was 92%. Growth was reported by fishes in the majority of reviewed studies. We found similar results after PIT tagging (peritoneum tagging using 12- or 23-mm half duplex tags) adult Cardinal Shiner Luxilus cardinalis, Central Stoneroller Campostoma annomalum, Greenside Darter Etheostoma blennioides, Orangethroat Darter Etheostoma spectabile, Slender Madtom Noturus exilis, and juvenile Smallmouth Bass Micropterus dolomieu. Tag retention for all species was high, with only one tag loss recorded after 60 d. Survival was also high (≥88%) for all of our species with the exception of Orangethroat Darter (56% survival). No significant difference in mean growth between treatment and control groups was found. Both our results and the findings of the literature review suggested generally high tag retention and low mortality in tagged fishes (across 31 species reviewed). However, within our study (e.g., Orangethroat Darter) and from the literature, examples of negative effects of PIT tagging on fishes were apparent, suggesting methodological testing is necessary before using PIT tags in field studies. We suggest future studies would benefit from addressing the behavioral implications that may be associated with tagging and examination of longer-term tag retention. Furthermore, standard reporting (i.e., sample sizes) in PIT tag studies would be beneficial, and use of control subjects or groups for statistical comparisons is needed
Labeling of endothelial cells with magnetic microbeads by angiophagy
Objectives
Attachment of magnetic particles to cells is needed for a variety of applications but is not always possible or efficient. Simpler and more convenient methods are thus desirable. In this study, we tested the hypothesis that endothelial cells (EC) can be loaded with micron-size magnetic beads by the phagocytosis-like mechanism ‘angiophagy’. To this end, human umbilical vein EC (HUVEC) were incubated with magnetic beads conjugated or not (control) with an anti-VEGF receptor 2 antibody, either in suspension, or in culture followed by re-suspension using trypsinization.
Results
In all conditions tested, HUVEC incubation with beads induced their uptake by angiophagy, which was confirmed by (i) increased cell granularity assessed by flow cytometry, and (ii) the presence of an F-actin rich layer around many of the intracellular beads, visualized by confocal microscopy. For confluent cultures, the average number of beads per cell was 4.4 and 4.2, with and without the presence of the anti-VEGFR2 antibody, respectively. However, while the actively dividing cells took up 2.9 unconjugated beads on average, this number increased to 5.2 if binding was mediated by the antibody. Magnetic pulldown increased the cell density of beads-loaded cells in porous electrospun poly-capro-lactone scaffolds by a factor of 4.5 after 5 min, as compared to gravitational settling (p < 0.0001).
Conclusion
We demonstrated that EC can be readily loaded by angiophagy with micron-sized beads while attached in monolayer culture, then dispersed in single-cell suspensions for pulldown in porous scaffolds and for other applications
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