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Emerging technologies in distance education
A one-stop knowledge resource, Emerging Technologies in Distance Education showcases the international work of research scholars and innovative distance education practitioners who use emerging interactive technologies for teaching and learning at a distance.This widely anticipated book harnesses the dispersed knowledge of international experts who highlight pedagogical, organizational, cultural, social, and economic factors that influence the adoption and integration of emerging technologies in distance education.
eBook
Assessment Strategies for Online Learning: Engagement and Authenticity
For many learners assessment conjures up visions of red pens scrawling percentages in the top right-hand corner of exams and feelings of stress, inadequacy, and failure. Although negative student reactions to evaluation have been noted, assessment has provided educational institutions with important information about learning outcomes and the quality of education for many decades. But how accurate is this data and has it informed practice or been fully incorporated into the learning cycle? Conrad and Open argue that the potential in many of the new learning environments to alter and improve assesment has yet to be explored by educators and students. In their investigation of assessment methods and learning approaches, Conrad and Openo aim to explore assessment that engages learners and authentically evaluates education. They insist that moving to new learning environments, specifically those online and at a distance, afford educators opportunities to embrace only the most effective face-to-face assessment methods and to realize the potential of delivering education in the digital age. In this volume practitioners will find not only an indispensable introduction to new forms of assessment but also a number of best practices as described by experienced educators.
eBook
Math on the move
Discusses the use of map when traveling, from choosing the the best route and type of transit, to calculating time, figuring out time zones, planning expenses and more.
Book
Sex-specific ranges and ratios for anogenital distance among Thai full-term newborns
Introduction
Anogenital distance (AGD) is a marker of prenatal androgen exposure and a tool for assessment of differences of sex development. Data for AGD in newborns have been published, but these findings may not be applicable to Thai newborns.
Aim
To provide the sex-specific ranges for AGD in Thai full-term newborns.
Methods
A cross-sectional study was conducted in term newborns in Thailand, during 2016–2018. AGD was measured from anus to anterior base of penis (AGD
AP
) and to perineoscrotal junction (AGD
AS
) in males and from anus to clitoris (AGD
AC
) and to posterior fourchette (AGD
AF
) in females. AGD ratio is defined as AGD
AS
divided by AGD
AP
in males and AGD
AF
divided by AGD
AC
in females.
Results
A total of 364 newborns were studied (male 51.4%). The mean AGD
AS
, AGD
AP
and AGD ratio in males were 25.20 ± 4.80, 52.60 ± 6.90 and 0.48 ± 0.08 mm, respectively. The mean AGD
AF
, AGD
AC
, and AGD ratio in females were 16.50 ± 3.90, 42.60 ± 6.20 and 0.39 ± 0.08 mm, respectively. There were significant differences between AGD
AS
and AGD
AF
, AGD
AP
and AGD
AC
, and AGD ratio between males and females (
p
< 0.001). The AGD
AS
, AGD
AP
, AGD
AF
, AGD
AC
were correlated with birth weight and length, but AGD ratio showed no correlation.
Conclusion
The sex-specific ranges for AGD in Thai full-term newborns were determined. AGD ratio is a useful marker of prenatal androgen exposure since it differs between sexes, but constant between races and did not vary by body size.
Journal Article
Distance Measures of Polarimetric SAR Image Data: A Survey
Distance measure plays a critical role in various applications of polarimetric synthetic aperture radar (PolSAR) image data. In recent decades, plenty of distance measures have been developed for PolSAR image data from different perspectives, which, however, have not been well analyzed and summarized. In order to make better use of these distance measures in algorithm design, this paper provides a systematic survey of them and analyzes their relations in detail. We divide these distance measures into five main categories (i.e., the norm distances, geodesic distances, maximum likelihood (ML) distances, generalized likelihood ratio test (GLRT) distances, stochastics distances) and two other categories (i.e., the inter-patch distances and those based on metric learning). Furthermore, we analyze the relations between different distance measures and visualize them with graphs to make them clearer. Moreover, some properties of the main distance measures are discussed, and some advice for choosing distances in algorithm design is also provided. This survey can serve as a reference for researchers in PolSAR image processing, analysis, and related fields.
Journal Article
How far can a kangaroo jump?
\"1 kangaroo jump = 2 ringtailed lemur leaps. Have you ever wondered just how far animals can jump? These cool comparisons explain it all--from tiny grasshopper hurdles and coyote vaults to the world's best pouncer: the snow leopard! You'll even see how many leaps each one needs to circle the globe. With its delightful illustrations, this fun book makes it easy to understand numbers and distance.\"-- Publisher's description.
Book
Distance: A 2024 re-examination
Distance, a concept that continues to be relevant and rather complex, is far from being obsolete despite its diminishing role in the age of virtual space. It represents spatial separation, a notion that was first quantified in Egypt some 5,000 years ago. The evolution of distance can be traced through five distinct phases: natural (absolute and relative distances), relational (time and cost distances, distance decay, friction of distance, and distanciation), technological (extensibility, accessibility, and speed), virtual (proximity, digital, cognitive, and metaphorical distances), and optional (optional and estimated distances). These historical phases have built upon each other, leading to our contemporary experience of all distance classes depending on specific separation cases. Modern humans may overcome any distance on earth, one way or another, unless prevented from doing so by political national sovereignties.
Journal Article