263 research outputs found
Philly Scientists: Blending Professional Development for In-School and Out-of-School Educators
In the fall of 2016, a team of Pennsylvania STEM educators received a generous grant from the National Science Foundation to provide STEM education to middle-school students in the Philadelphia Promise Zone. Entitled “Philly Scientists” and targeting both classroom teachers and out-of-school time (OST) staff, this grant combined biodiversity curriculum development, teacher training, career access activities, and modern technology to address the following three research questions:
1. What coherent set of experiences effectively support fourth, fifth and sixth grade students’ knowledge development (e.g., biodiversity content knowledge blended with science practices), motivation and career awareness about STEM-related work and jobs of today and the future? What are characteristics of their knowledge, motivation and career awareness competencies? 2. What professional development models and recognition systems can effectively engage teachers and OST providers in demonstrating Next Generation Science knowledge, pedagogy, and career awareness for fourth through sixth grade students? 3. How effective is the activity of Promise Zone fourth-sixth grade students as information providers and Urban Scientists interacting with scientist mentors towards increasing career awareness and understanding characteristics of STEM work?
Our partners in this initiative were Drexel University, The Philadelphia Education Fund (PEF), The Academy of Natural Sciences of Drexel University (ANS), and the Pennsylvania Statewide Afterschool/Youth Development Network (PSAYDN). The project also engaged Research for Action (RFA) as the external evaluator.
Staff from the Philadelphia Education Fund were primarily tasked with designing, implementing, and evaluating the professional development component of this initiative. The team recognized that in-school and OST teachers have different skill-sets, needs, and schedules - but that each group of educators also has a great deal to offer one another. For instance, we hypothesized that classroom teachers may have more experience connecting lessons to national standards and local educational initiatives; while OST providers may be more versed in working with families, with communities, and with blending social work and education. For these reasons, we were interested in both the logistical and pedagogical results and implications of our study. And while there is a great deal of research pertaining to STEM professional development for both in-school and out-of-school staff, we found little literature that referenced blending PD for both populations
El liderazgo del profesor: requisito para la empleabilidad
In the current context of the European Higher Education Area, the University's mission is to prepare qualified professionals with
the necessary skills to work at a prestigious level, and therefore, develop professional leadership. This study addresses whether it
is possible to develop professional leadership from the specific field of initial training of future teachers. We start from the
educational leadership which includes the concept of teacher leadership. In Spain it is still difficult to find literature sources that
delve into this particular type of leadership, although this concept is making inroads into the approaches of other types of
leadership in schools. However, in the references found, there is agreement on raising the participation of teachers in the school
context by putting their personal and professional skills at the service of improving their environment. From this starting point,
and at the same time taking into account the current approach by competences of Higher Education, some methodological
proposals are made which may materialize in good educational practices, and help to think how to promote leadership from
initial teacher training.En el marco actual del Espacio Europeo de EducaciĂłn Superior se encomienda a la Universidad la misiĂłn de preparar
profesionales cualificados, dotados de las competencias necesarias que les permitan desarrollar un verdadero liderazgo
profesional. En este estudio se aborda si es posible desarrollar el liderazgo profesional desde el ámbito especĂfico de la formaciĂłn
inicial de los futuros maestros con vistas a fomentar en ellos las competencias requeridas para la empleabilidad. Para ello
partimos del tĂ©rmino liderazgo educativo en el que se sitĂşa el liderazgo del profesor. TodavĂa es difĂcil encontrar fuentes que
ahonden en este tipo concreto de liderazgo, el del profesor, aunque se va abriendo paso en los planteamientos de otros tipos de
liderazgo ampliamente estudiados como el distribuido, el transformacional o el instruccional. No obstante, en las referencias
halladas existe un acuerdo en resaltar la participaciĂłn del profesor en el contexto escolar poniendo las competencias personales y
profesionales al servicio de la mejora de su entorno. Desde este punto de inicio y, teniendo en cuenta al mismo tiempo, el actual
enfoque por competencias de la EducaciĂłn Superior, se proponen algunas propuestas metodolĂłgicas que pueden materializarse
en buenas prácticas educativas, contribuyendo de esta forma al desarrollo del liderazgo del profesor y las competencias de
empleabilidad desde su formaciĂłn inicial
Edades radiométricas de los edificios miocenos de Fuerteventura (Islas Canarias).
Se han realizado once nuevas dataciones K-Ar de las coladas básicas (basaltos, nefelinitas) y sálicas (traquitas) de los tres edificios principales subaĂ©reos (Tetir o Norte, Gran Tarajal o Central y JandĂa o Sur) que constituyen la Fase miocena de la isla. Se precisa algo más la cronoestratigrafĂa relativa entre ellos, asĂ como la correspondiente a los tramos que los integran
Tyrosine phosphorylation-dependent activation of phosphatidylinositide 3-kinase occurs upstream of Ca^(2+)-signalling induced by Fcy receptor cross-linking in human neutrophils
The effect of wortmannin on IgG-receptor (FcyR)-mediated
stimulation of human neutrophils was investigated. The Ca^(2+)
influx induced by clustering of both Fcy receptors was inhibited
by wortmannin, as was the release of Ca^(2+) from intracellular
stores. Wortmannin also inhibited, with the same efficacy, the
accumulation of Ins(1,4,5)P3 observed after FcyR stimulation,
but did not affect the increase in Ins(1,4,5)P3 induced by the
chemotactic peptide, formyl-methionine-leucine-phenylalanine.
Because wortmannin is, in the concentrations used here, an
inhibitor of PtdIns 3-kinase, these results suggested a role for
PtdIns 3-kinase upstream of Ca^(2+) signalling, induced by FcyR
cross-linking. Support for this notion was obtained by investigating
the effect of another inhibitor of PtdIns 3-kinase, LY
294002, and by studying the kinetics of PtdIns 3-kinase activation.
We found translocation of PtdIns 3-kinase to the plasma
membrane and increased PtdIns 3-kinase activity in the membrane
as soon as 5 s after FccR cross-linking, even before the
onset of the Ca^(2+) response. Moreover, the translocation of
PtdIns 3-kinase to the plasma membrane was inhibited by cocross-
linking of either FcyRIIa and FcyRIIIb with the tyrosine
phosphatase, CD45, indicating a requirement for protein tyrosine
phosphorylation in the recruitment of PtdIns 3-kinase to the
plasma membrane. Taken together, our results suggest a role for
PtdIns 3-kinase in early signal transduction events after FcyR
cross-linking in human neutrophils
Short-term outcomes after long inverted versus short standard biliopancreatic limb in Roux-en-Y gastric bypass
Background: Obesity is a public health issue that affects the entire world and it is rising. Roux-en-Y gastric bypass is one of the most common bariatric procedures and it can reach a significant and sustained excess weight loss and efficient comorbidity control. The main objective was to compare short-term outcomes between standard versus long biliopancreatic limb gastric bypass patients.Methods: it was a retrospective, comparative, descriptive, single-center study. We evaluated obese patients that underwent a laparoscopic Roux-en-Y gastric bypass with standard or long biliopancreatic limb in Centro Medico ABC, Mexico City, and compared general demographics, weight loss, excess weight loss, comorbidities and quality of life.Results: Of 50 patients analyzed, 24 were in the standard gastric bypass (S-GB) and 26 in the long biliopancreatic limb (LBPL-GB). Mean weight loss in the S-GB group was 33.1±12.1 kg and in the LBPL-GB was 40.2±12.6 kg with a difference of 7.1 kg. The percentage of excess weight loss (%EWL) was 72.5±14% in S-GB and 72.9±19% in LBPL-GB, with a difference of 0.4% in the 12 months of follow-up. There was a complete reduction of hypoglycemic drugs in 80% in the S-GB group and 100% in the LBPL-GB group.Conclusions: With this modification of the technique, we achieved important outcomes in regard of comorbidities, without affecting drastically weight loss or the EWL. This procedure is safe and feasible
Community composition and habitat characterization of a rock sponge aggregation (Porifera, Corallistidae) in the Cantabrian Sea.
Deep-sea sponge-dominated communities are complex habitats considered hotspots
of biodiversity and ecosystem functioning. They are classified as Vulnerable Marine
Ecosystem and are listed as threatened or declining as a result of anthropogenic
activities. Yet, studies into the distribution, community structure and composition of
these habitats are scarce, hampering the development of appropriate management
measures to ensure their conservation. In this study we describe a diverse benthic
community, dominated by a lithistid sponge, found in two geomorphological features
of important conservation status —Le Danois Bank and El Corbiro Canyon— of the
Cantabrian Sea. Based on the analyses of visual transects using a photogrammetric
towed vehicle and samples collected by rock dredge, we characterize the habitat and
the associated community in detail. This deep-sea sponge aggregation was found on
bedrock. It is dominated by one lithistid sponge, Neoschrammeniella aff. bowerbankii
(0.2 ind./m2) and further composed of various sponge species as well as of other benthic
invertebrates such as cnidarians, bryozoans and crustaceans. Using a non-invasive
methodology (SfM – Structure from Motion) and empirical relationships of individuals
size and biomass/volume obtained in laboratory for N. aff. bowerbankii, we were able
to estimate a total biomass of 41 kg and volume of 39 l of this species in the surveyed
area. This approach allows a fine tune methodology for estimating biomass and volume
by image-based-observed area avoiding destructive techniques for this species.Postprin
Can multisensorial media improve learner experience?
In recent years, the emerging immersive technologies (e.g. Virtual/Augmented Reality, multisensorial media) bring brand-new multi-dimensional effects such as 3D vision, immersion, vibration,
smell, airflow, etc. to gaming, video entertainment and other aspects of human life. This paper reports results from an European Horizon 2020 research project on the impact of multisensoral media (mulsemedia) on educational learner experience. A mulsemediaenhanced test-bed was developed to perform delivery of video content enhanced with haptic, olfaction and airflow effects. The results of the quality rating and questionnaires show significant improvements in terms of mulsemedia-enhanced teaching
Rocas volcánicas submarinas en la base de la Formación Cañadas. Macizo de Tigaiga (N. de Tenerife)
A volcanic submarine formation crops out in the north coast of Tenerife, east of San Juan de la
Rambla. This unit is formed by massive and pil/owed lavas, pillow-breccias, hyaloc/astites and palagonitic
tuffs and is interpreted as consisUng of subaerial lavas that flowed into shal/ow marine
waters. The lavas are amphibolic trachybasalts. An unaltered sample coming fram the most massive
zone has yielded a whole rack 2.60±0.17 Ma K-Ar age. These submarine lavas are underlying
the oldest formations of the Las Cañadas Series dated at 1.24 Ma in that same area. The submarine
lavas correspond to a time period for which very scarce information was yet available in Tenerife
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