67 research outputs found
Elementary School Entrepreneurs
In this paper, I describe the implementation of a project-based economics unit in a fifth-grade classroom in Michigan, titled One Hen. One Hen is a curricular unit designed to teach students about social entrepreneurship as a way for students to learn economic concepts while developing their own civic efficacy by engaging in a project where they design and run their own social business. These findings are part of a larger case study that examines one fifth-grade class’s experience with One Hen and what these students learned about the economic concepts of loans and entrepreneurship. Through the authentic experiences of project-based learning, the fifth-grade students developed a more sophisticated understanding of loans and the role of microfinance in creating a social business
Alien Registration- Mcmahon, Annie E. (Portland, Cumberland County)
https://digitalmaine.com/alien_docs/21795/thumbnail.jp
Maternal mind-mindedness and children’s school readiness: A longitudinal study of developmental processes
This study aimed to test a five-wave sequential mediation model linking maternal mind-mindedness during infancy to children’s school readiness in kindergarten through a serial mediation involving child language and effortful control in toddlerhood and the preschool years. Among a sample of 204 mother-child dyads, we assessed maternal mind-mindedness when children were aged 1 year, child expressive vocabulary at age 2, effortful control at ages 3 and 4, and finally cognitive school readiness in kindergarten. The results corroborated the model, suggesting that the prospective association between early mind-mindedness and later cognitive school readiness was entirely mediated by the proposed sequence of mediators, all of which were necessary to account for this longitudinal association. These findings suggest that the potential of parental mind-mindedness to support children’s cognitive development may have been under-estimated, and that its putative positive influence may take the form of a developmental cascade unfolding during the preschool years and entailing the acquisition of basic skills that serve as building blocks for further learning and development
The role of paternal mind‐mindedness in preschoolers' self‐regulated conduct
This study examined the prospective links between paternal mind‐mindedness (MM) and 2 indices of preschoolers' self‐regulated con-duct, namely, inhibitory control and rule‐compatible conduct.Ninety‐two families (47 boys) participated in 2 assessments. PaternalMM was assessed with a 10‐min father–child free‐play session whenchildren were aged 18 months. Children's rule‐compatible conductwas reported by mothers when children reached 3 years of age,and inhibitory control was measured with a Snack Delay task, alsoadministered at 3 years. The results suggested that after accountingfor the contribution of child temperament (social fearfulness),paternal MM was positively related to children's inhibitory control.In contrast, the relation between paternal MM and mother‐reportedrule‐compatible conduct was not significant. The results areinterpreted in light of the mechanisms that may account for the linksbetween paternal MM and preschoolers' emerging capacity tovoluntarily control their behaviour
Exercises for improving quick perception grades I, II, III.
Thesis (Ed.M.)--Boston University
N.B.: Page 242 is misnumbered. No content is missing from thesis
Malaria surveillance from both ends: concurrent detection of Plasmodium falciparum in saliva and excreta harvested from Anopheles mosquitoes
Background: Malaria is the most important vector-borne disease in the world. Epidemiological and ecological studies of malaria traditionally utilize detection of Plasmodium sporozoites in whole mosquitoes or salivary glands by microscopy or serological or molecular assays. However, these methods are labor-intensive, and can over- or underestimate mosquito transmission potential. To overcome these limitations, alternative sample types have been evaluated for the study of malaria. It was recently shown that Plasmodium could be detected in saliva expectorated on honey-soaked cards by Anopheles stephensi, providing a better estimate of transmission risk. We evaluated whether excretion of Plasmodium falciparum nucleic acid by An. stephensi correlates with expectoration of parasites in saliva, thus providing an additional sample type for estimating transmission potential. Mosquitoes were exposed to infectious blood meals containing cultured gametocytes, and excreta collected at different time points post-exposure. Saliva was collected on honey-soaked filter paper cards, and salivary glands were dissected and examined microscopically for sporozoites. Excreta and saliva samples were tested by real time polymerase chain reaction (RT-rtPCR).
Results: Plasmodium falciparum RNA was detected in mosquito excreta as early as four days after ingesting a bloodmeal containing gametocytes. Once sporogony (the development of sporozoites) occurred, P. falciparum RNA was detected concurrently in both excreta and saliva samples. In the majority of cases, no difference was observed between the Ct values obtained from matched excreta and saliva samples, suggesting that both samples provide equally sensitive results. A positive association was observed between the molecular detection of the parasites in both samples and the proportion of mosquitoes with sporozoites in their salivary glands from each container. No distinguishable parasites were observed when excreta samples were stained and microscopically analyzed.
Conclusions: Mosquito saliva and excreta are easily collected and are promising for surveillance of malaria-causing parasites, especially in low transmission settings or in places where arboviruses co-circulate
The Ninth Data Release of the Sloan Digital Sky Survey: First Spectroscopic Data from the SDSS-III Baryon Oscillation Spectroscopic Survey
The Sloan Digital Sky Survey III (SDSS-III) presents the first spectroscopic
data from the Baryon Oscillation Spectroscopic Survey (BOSS). This ninth data
release (DR9) of the SDSS project includes 535,995 new galaxy spectra (median
z=0.52), 102,100 new quasar spectra (median z=2.32), and 90,897 new stellar
spectra, along with the data presented in previous data releases. These spectra
were obtained with the new BOSS spectrograph and were taken between 2009
December and 2011 July. In addition, the stellar parameters pipeline, which
determines radial velocities, surface temperatures, surface gravities, and
metallicities of stars, has been updated and refined with improvements in
temperature estimates for stars with T_eff<5000 K and in metallicity estimates
for stars with [Fe/H]>-0.5. DR9 includes new stellar parameters for all stars
presented in DR8, including stars from SDSS-I and II, as well as those observed
as part of the SDSS-III Sloan Extension for Galactic Understanding and
Exploration-2 (SEGUE-2).
The astrometry error introduced in the DR8 imaging catalogs has been
corrected in the DR9 data products. The next data release for SDSS-III will be
in Summer 2013, which will present the first data from the Apache Point
Observatory Galactic Evolution Experiment (APOGEE) along with another year of
data from BOSS, followed by the final SDSS-III data release in December 2014.Comment: 9 figures; 2 tables. Submitted to ApJS. DR9 is available at
http://www.sdss3.org/dr
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