scholarly journals ‘We'd never had to set up a virtual school before’ : Opportunities and challenges for primary and secondary teachers during emergency remote education

2021 ◽  
Vol 9 (3) ◽  
Author(s):  
Anastasia Gouseti
Keyword(s):  
Secondary Teachers ◽  
Virtual School ◽  
Remote Education ◽  
Set Up

scholarly journals Experiences with virtual schools on “Climate data for impact assessments”

2021 ◽  
Author(s):  
Janette Bessembinder ◽  
Judith Klostermann ◽  
Rutger Dankers ◽  
Vladimir Djurdjevic ◽  
Tomas Halenka
Keyword(s):  
Summer School ◽  
Climate Modeling ◽  
Virtual Schools ◽  
Virtual School ◽  
Climate Data ◽  
Climate Services ◽  
Impact Modelling ◽  
Set Up ◽  
Impact Models

<p>The provision of climate services to users is a fast developing field. In support of this development, the IS-ENES3 project, funded within the EC Horizon2020 program, organized three schools on “Climate data for impact assessments” in 2020 and 2021. In an Autumn school, a Spring school and a Summer school, climate scientists and impact scientists were brought together. An important aim of the schools was to enhance interaction between Vulnerability-Impact-Adaptation (VIA) researchers, climate services providers and climate researchers. Another aim was to provide an overview of information on climate modeling, climate data, impact modelling and climate services based on the work of the IS-ENE3 project.</p><p>In the first three weeks a series of lectures was given, covering topics such as climate data and modelling, impact models, portals for accessing and processing climate data, setting-up impact assessments, and communication of results to stakeholders. In the last three weeks the participants worked in small groups of one climate scientist with one impact scientist on a case study under the guidance of the course lecturers. Impact and climate researchers were combined on purpose to let them experience how they could help each other.</p><p>Originally the schools were planned to take place on-site (e.g. in Prague) during one week; however, due to COVID-19 the schools had to be transformed to virtual schools with two weekly sessions during six weeks. Although the virtual set-up had some disadvantages (e.g. less possibilities for networking), there were also some advantages (e.g. the possibility to record the lectures and make them available to a broader audience; more time to explore and work with climate data in between the sessions, no CO<sub>2</sub> emissions for travelling). During this presentation we will present the set-up of the schools and the conversion to a virtual school. We will focus on the lessons learnt and the evaluation of the virtual schools by the participants and give some recommendations for similar schools and how to link the climate and VIA research communities .</p>

Compressed Video for the Global Village

2011 ◽  
pp. 317-322
Author(s):  
Al P. Mizell
Keyword(s):  
Virtual School ◽  
Compressed Video ◽  
Marshall Mcluhan ◽  
Global Village ◽  
Exotic Animals ◽  
Use Of Technology ◽  
The World ◽  
In The Wild ◽  
Video Systems ◽  
Set Up

Marshall McLuhan (1964) introduced the concept of the global village that helped us see what was happening with worldwide, inexpensive communication through technology. However, at the time we did not envision that it would result during our lifetimes with our students being able to see and talk with students across the ocean and around the globe. From Nebraska’s statewide video network (Robinson, 2004) to the Florida Virtual School (Johnston, 2000), the use of technology to connect students at distant locations with a central site has become almost commonplace. When students find that a course they need to take is not available at their school site, they can electronically register to complete that course online with students from many other locations—all connected together. If a teacher is presenting a lesson on exotic animals, but lacks in-depth expertise in that topic, he or she can go online and bring in an expert from one of the several online zoos or connect the students to a Webcam set up in the wild where the animals can be viewed in real time around the world. To get even more structured interactions with students in other parts of the nation or the world, and to have high-quality picture and voice exchanges, compressed video systems connected via broad bandwidth ISDN phone lines are being used.

scholarly journals Strategic educational management and teaching performance in remote education

2021 ◽  
pp. 1563-1577
Author(s):  
Isabel Menacho-Vargas ◽  
Giuliana del Socorro Raggio-Ramírez ◽  
Carlos Humberto Fabián-Falcón ◽  
Elizabeth Grados-Zavala
Keyword(s):  
Informed Consent ◽  
Secondary Teachers ◽  
Expert Judgment ◽  
Quantitative Approach ◽  
Educational Institutions ◽  
Teaching Performance ◽  
Remote Education ◽  
Educational Management ◽  
Parametric Test ◽  
San Martín

The study was intended to know the current relationship between strategic educational management and the performance of primary and secondary teachers in the district of San Martín de Porres, UGEL 2. A basic and correlal investigation was carried out with a quantitative approach. The sampling was not probabilistic for convenience. The technique chosen was the survey and the instruments, two questionnaires that showed validity of content through expert judgment, who was able to apply. Reliability was obtained from α 0.969 for strategic educational management and α 0.919 for teaching performance. The Google form was used, which was sent via a link to teachers who voluntarily responded to the reagents; the application initiated informed consent. A database was generated for the l-inference analysis; this database was performed with Spearman's Rho non-parametric test. A Rho: 0.890 was obtained, indicating a highly significant correlation between strategic educational management and teaching performance and the educational institutions studied. These results show similarity to other findings in similar studies.

Developing Pre-service Secondary Teachers' Skills of Using the Geometer's Sketchpad to Teach Mathematics through Lesson Study

2013 ◽  
Vol 63 (2) ◽  
Author(s):  
Chew Cheng Meng ◽  
Lim Chap Sam ◽  
Wun Thiam Yew ◽  
Lim Hooi Lian
Keyword(s):  
Secondary Teachers ◽  
Lesson Study ◽  
Teaching And Learning ◽  
Dynamic Geometry ◽  
Two Dimensions ◽  
Dynamic Geometry Software ◽  
Methods Course ◽  
Geometer's Sketchpad ◽  
Set Up ◽  
Mathematics Teaching Methods

The purpose of this study was to develop pre-service secondary teachers’ skills of using The Geometer’s Sketchpad (GSP) to teach mathematics through Lesson Study (LS). GSP is a dynamic geometry software program for constructing and investigating mathematical objects that adds a powerful dimension to the teaching and learning of geometry and many other areas of mathematics. Lesson Study is a Japanese model of teacher professional development in which small groups of teachers collaboratively plan, teach and revise a lesson to improve the quality of their teaching as well as to enrich students’ learning experiences. Twenty-three LS groups comprising 2 pre-service secondary teachers who attended a mathematics teaching methods course in a local public university were set up in four tutorial groups each consisting of five or six LS groups. This paper discusses how LS has helped to develop pre-service secondary teachers’ skills of using GSP to teach the topic of ‘Loci in Two Dimensions’ in one of the LS groups. Analysis of their GSP sketches in the first, second and third lessons indicates that the participants of this LS group showed positive changes in their skills of using GSP to teach the topic.

The Effects of Drying Techniques on Clay-Rich Soil Texture

1974 ◽  
Vol 32 ◽  
pp. 466-467
Author(s):  
T. G. Naymik
Keyword(s):  
Critical Point ◽  
Liquid Nitrogen ◽  
Liquid Nitrogen Temperature ◽  
Drying Methods ◽  
Air Drying ◽  
Freeze Dried ◽  
Critical Point Drying ◽  
Set Up ◽  
The Relationship ◽  
Quartz Grains

Three techniques were incorporated for drying clay-rich specimens: air-drying, freeze-drying and critical point drying. In air-drying, the specimens were set out for several days to dry or were placed in an oven (80°F) for several hours. The freeze-dried specimens were frozen by immersion in liquid nitrogen or in isopentane at near liquid nitrogen temperature and then were immediately placed in the freeze-dry vacuum chamber. The critical point specimens were molded in agar immediately after sampling. When the agar had set up the dehydration series, water-alcohol-amyl acetate-CO2 was carried out. The objectives were to compare the fabric plasmas (clays and precipitates), fabricskeletons (quartz grains) and the relationship between them for each drying technique. The three drying methods are not only applicable to the study of treated soils, but can be incorporated into all SEM clay soil studies.

Evaluation of Freezing Methods by Low Temperature X-Ray Diffraction

1977 ◽  
Vol 35 ◽  
pp. 330-333
Author(s):  
T. Gulik-Krzywicki ◽  
M.J. Costello
Keyword(s):  
Biological Materials ◽  
Molecular Organization ◽  
X Ray Diffraction ◽  
Glass Capillary ◽  
X Ray ◽  
Rate Dependent ◽  
Before And After ◽  
Freeze Etching ◽  
Diffraction Patterns ◽  
Set Up

Freeze-etching electron microscopy is currently one of the best methods for studying molecular organization of biological materials. Its application, however, is still limited by our imprecise knowledge about the perturbations of the original organization which may occur during quenching and fracturing of the samples and during the replication of fractured surfaces. Although it is well known that the preservation of the molecular organization of biological materials is critically dependent on the rate of freezing of the samples, little information is presently available concerning the nature and the extent of freezing-rate dependent perturbations of the original organizations. In order to obtain this information, we have developed a method based on the comparison of x-ray diffraction patterns of samples before and after freezing, prior to fracturing and replication.Our experimental set-up is shown in Fig. 1. The sample to be quenched is placed on its holder which is then mounted on a small metal holder (O) fixed on a glass capillary (p), whose position is controlled by a micromanipulator.

Eels Under Standing Wave Conditions

1982 ◽  
Vol 40 ◽  
pp. 492-495
Author(s):  
O.L. Krivanek ◽  
J. TaftØ
Keyword(s):  
Standing Wave ◽  
Wave Conditions ◽  
Set Up ◽  
A Site ◽  
Complex Crystal

It is well known that a standing electron wavefield can be set up in a crystal such that its intensity peaks at the atomic sites or between the sites or in the case of more complex crystal, at one or another type of a site. The effect is usually referred to as channelling but this term is not entirely appropriate; by analogy with the more established particle channelling, electrons would have to be described as channelling either through the channels or through the channel walls, depending on the diffraction conditions.

Low-Loss Images in a Stem/Tem Microscope

1976 ◽  
Vol 34 ◽  
pp. 496-497 ◽  
Author(s):  
David C. Joy ◽  
Dennis M. Maher
Keyword(s):  
High Resolution ◽  
Surface Topography ◽  
Beam Direction ◽  
Low Loss ◽  
Specimen Holder ◽  
Glancing Angle ◽  
High Resolution Images ◽  
Set Up ◽  
Conventional Manner ◽  
Objective Type

High-resolution images of the surface topography of solid specimens can be obtained using the low-loss technique of Wells. If the specimen is placed inside a lens of the condenser/objective type, then it has been shown that the lens itself can be used to collect and filter the low-loss electrons. Since the probeforming lenses in TEM instruments fitted with scanning attachments are of this type, low-loss imaging should be possible.High-resolution, low-loss images have been obtained in a JEOL JEM 100B fitted with a scanning attachment and a thermal, fieldemission gun. No modifications were made to the instrument, but a wedge-shaped, specimen holder was made to fit the side-entry, goniometer stage. Thus the specimen is oriented initially at a glancing angle of about 30° to the beam direction. The instrument is set up in the conventional manner for STEM operation with all the lenses, including the projector, excited.

UHV-TEM studies of laser-induced damage

1991 ◽  
Vol 49 ◽  
pp. 632-633
Author(s):  
T.S. Savage ◽  
R. Ai ◽  
D. Dunn ◽  
L.D. Marks
Keyword(s):  
Surface Science ◽  
Rapid Heating ◽  
Local Heating ◽  
Routine Practice ◽  
Transmission Electron ◽  
Northwestern University ◽  
Laser Induced Damage ◽  
Set Up ◽  
Focusing Lens ◽  
Diffusion Of Impurities

The use of lasers for surface annealing, heating and/or damage has become a routine practice in the study of materials. Lasers have been closely looked at as an annealing technique for silicon and other semiconductors. They allow for local heating from a beam which can be focused and tuned to different wavelengths for specific tasks. Pulsed dye lasers allow for short, quick bursts which can allow the sample to be rapidly heated and quenched. This short, rapid heating period may be important for cases where diffusion of impurities or dopants may not be desirable.At Northwestern University, a Candela SLL - 250 pulsed dye laser, with a maximum power of 1 Joule/pulse over 350 - 400 nanoseconds, has been set up in conjunction with a Hitachi UHV-H9000 transmission electron microscope. The laser beam is introduced into the surface science chamber through a series of mirrors, a focusing lens and a six inch quartz window.

A simple way for producing holographic filters suitable for image improvement

1978 ◽  
Vol 36 (1) ◽  
pp. 226-227
Author(s):  
K.-H. Herrmann ◽  
E. Reuber ◽  
P. Schiske
Keyword(s):  
Transfer Functions ◽  
Diffraction Order ◽  
Lateral Position ◽  
Simple Method ◽  
Spatial Frequencies ◽  
Resolution Electron ◽  
Wiener Filters ◽  
Image Improvement ◽  
Optical Reconstruction ◽  
Set Up

Aposteriori deblurring of high resolution electron micrographs of weak phase objects can be performed by holographic filters [1,2] which are arranged in the Fourier domain of a light-optical reconstruction set-up. According to the diffraction efficiency and the lateral position of the grating structure, the filters permit adjustment of the amplitudes and phases of the spatial frequencies in the image which is obtained in the first diffraction order.In the case of bright field imaging with axial illumination, the Contrast Transfer Functions (CTF) are oscillating, but real. For different imageforming conditions and several signal-to-noise ratios an extensive set of Wiener-filters should be available. A simple method of producing such filters by only photographic and mechanical means will be described here.A transparent master grating with 6.25 lines/mm and 160 mm diameter was produced by a high precision computer plotter. It is photographed through a rotating mask, plotted by a standard plotter.

Sign in / Sign up

Export Citation Format

Share Document