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The distance is measured by a function called a metric or distance function. [1] Metric spaces are the most general setting for studying many of the concepts of mathematical analysis and geometry . The most familiar example of a metric space is 3-dimensional Euclidean space with its usual notion of distance.
Synchronous learning refers to a learning event in which a group of students are engaging in learning at the same time. Before learning technology allowed for synchronous learning environments, most online education took place through asynchronous learning methods. Since synchronous tools that can be used for education have become available ...
Friction of distance. Friction of distance is a core principle of geography that states that movement incurs some form of cost, in the form of physical effort, energy, time, and/or the expenditure of other resources, and that these costs are proportional to the distance traveled. This cost is thus a resistance against movement, analogous (but ...
The distance between two points in physical space is the length of a straight line between them, which is the shortest possible path. This is the usual meaning of distance in classical physics, including Newtonian mechanics. Straight-line distance is formalized mathematically as the Euclidean distance in two- and three-dimensional space.
Online school. A staged example of an online classroom using Jitsi. The teacher is sharing their screen. An online school ( virtual school, e-school, or cyber-school) teaches students entirely or primarily online or through the Internet. It has been defined as "education that uses one or more technologies to deliver instruction to students who ...
Telecommunication is a compound noun of the Greek prefix tele- (τῆλε), meaning distant, far off, or afar, [6] and the Latin verb communicare, meaning to share. Its modern use is adapted from the French, [7] because its written use was recorded in 1904 by the French engineer and novelist Édouard Estaunié.
In mathematics and its applications, the signed distance function (or oriented distance function) is the orthogonal distance of a given point x to the boundary of a set Ω in a metric space, with the sign determined by whether or not x is in the interior of Ω. The function has positive values at points x inside Ω, it decreases in value as x ...
Nonformal learning. Non-formal learning includes various structured learning situations which do not either have the level of curriculum, syllabus, accreditation and certification associated with ' formal learning ', but have more structure than that associated with ' informal learning ', which typically take place naturally and spontaneously ...