Children's Free Recall Sketch Maps of the World on a Spherical Surface

1998 ◽  
Vol 7 (1) ◽  
pp. 67-83 ◽  
Author(s):  
Patrick Wiegand
Keyword(s):  
Free Recall ◽  
Spherical Surface ◽  
The World ◽  
Sketch Maps

scholarly journals Realization of a Service Robot for Cleaning Spherical Surfaces

10.5772/5800 ◽  
2005 ◽  
Vol 2 (1) ◽  
pp. 7 ◽  
Author(s):  
Houxiang Zhang ◽  
Jianwei Zhang ◽  
Rong Liu ◽  
Guanghua Zong
Keyword(s):  
Control System ◽  
Spherical Surface ◽  
Service Robot ◽  
Climbing Robot ◽  
Complicated Shape ◽  
Ability To Work ◽  
Distributed Controller ◽  
Spherical Surfaces ◽  
The World ◽  
Remote Controller

There are more and more buildings with complicated shape emerging all over the world. Their walls require constant cleaning which is difficult to realize. In this paper, based on analyzing the characteristics of the working target, a new kind of auto-climbing robot is proposed, which is used for cleaning the spherical surface of the National GrandTheatre in China. The robots' mechanism and unique aspects are presented in detail. A distributed controller based onCAN bus is designed to meet the requirements of controlling the robot. The control system is divided into 6 parts, fiveCAN bus control nodes and a remote controller, which are designed and established based mainly on the P80C592. Finally, the motion function is described in detail. The experimental results confirm the principle described above andthe robot's ability to work on the spherical surface.

scholarly journals Adapting Active Reflector Technology for greater sensitivity and sky-coverage in FAST-like Telescopes

2020 ◽  
Author(s):  
Jian-Ling Li ◽  
Bo Peng ◽  
Cheng-Jin Jin ◽  
Hui Li ◽  
Richard G Strom ◽  
...  
Keyword(s):  
Radio Telescope ◽  
Zenith Angle ◽  
Spherical Surface ◽  
Innovative Technology ◽  
Spherical Surfaces ◽  
The World ◽  
Active Reflector

Abstract The Five-hundred-meter Aperture Spherical radio Telescope (FAST), the largest single dish radio telescope in the world, has implemented an innovative technology for its huge reflector, which changes the shape of the primary reflector from spherical to that of a paraboloid of 300 m aperture. Here we explore how the current FAST sensitivity can potentially be further improved by increasing the illuminated area (i.e., the aperture of the paraboloid embedded in the spherical surface). Alternatively, the maximum zenith angle can be increased to give greater sky coverage by decreasing the illuminated aperture.Different parabolic apertures within the FAST capability are analyzed in terms of how far the spherical surface would have to move to approximate a paraboloid. The sensitivity of FAST can be improved by approximately 10% if the aperture of the paraboloid is increased from 300 m to 315 m. The parabolic aperture lies within the main spherical surface and does not extend beyond its edge. The maximum zenith angle can be increased to approximately 35 degrees from 26.4 degrees, if we decrease the aperture of the paraboloid to 220 m. This would still give a sensitivity similar to the Arecibo 305 m radio telescope. Radial deviations between paraboloids of different apertures and the spherical surfaces of differing radii are also investigated. Maximum zenith angles corresponding to different apertures of the paraboloid are further derived. A spherical surface with a different radius can provide a reference baseline for shape-changing applied through active reflector technology to FAST-like telescopes.

scholarly journals Math on a sphere: Making use of public displays in mathematics and programming education

2014 ◽  
pp. 140-155
Keyword(s):  
World Wide ◽  
Spherical Surface ◽  
User Testing ◽  
Museum Visitors ◽  
The Public ◽  
Public Displays ◽  
Museum Professionals ◽  
The World ◽  
Programming Interface ◽  
Large Spherical

Science on a Sphere (SoS) is a compelling educational display installed at numerous museums and planetariums around the world; essentially the SoS display is a large spherical surface on which multicolor high-resolution depictions of (e.g.) planetary weather maps may be depicted. Fascinating as the SoS display is, however, it is in practice restricted to the use of museum professionals; students (and for that matter, older museum visitors) are unable to create their own displays for the surface. This paper describes a working software system, Math on a Sphere (MoS), that democratizes the SoS display by providing a simple programming interface to the public, over the World Wide Web. Briefly, our system allows anyone to write programs for spherical graphics patterns, and then to upload those programs at a planetarium or museum site and see the result on the giant sphere. This paper describes the implementation of the MoS system; sketches a sample project; and concludes with a more wide-ranging discussion of our user testing to date, as well as strategies for empowering children and students with greater control of public displays.

scholarly journals Images of francophone countries and francophone images of the world

1995 ◽  
Vol 50 (1) ◽  
pp. 3-11 ◽  
Author(s):  
A. S. Bailly ◽  
C. MacCabe ◽  
T. Saarinen
Keyword(s):  
North America ◽  
Geography Education ◽  
First Year ◽  
Mental Maps ◽  
The World ◽  
Sketch Maps

Abstract. A sample of mental maps of the world drawn by first-year geography students of eight Francophone countries reflects their variations in geography education. In several countries the geography students are unable to place 30 countries on their Sketch maps ofthe world! The Francophone nations are not seen as the most important, for several large and wellknown countries appear more frequently than most Francophone countries on the sketch maps ofthe world from France and other Francophone countries of Europe, Africa and North America.

A pragmatist philosophy of psychological science and its implications for replication

2018 ◽  
Vol 41 ◽  
Author(s):  
Ana Gantman ◽  
Robin Gomila ◽  
Joel E. Martinez ◽  
J. Nathan Matias ◽  
Elizabeth Levy Paluck ◽  
...  
Keyword(s):  
William James ◽  
Mental Processes ◽  
Psychological Science ◽  
Behavioral Measurement ◽  
The World ◽  
Pragmatist Philosophy

AbstractA pragmatist philosophy of psychological science offers to the direct replication debate concrete recommendations and novel benefits that are not discussed in Zwaan et al. This philosophy guides our work as field experimentalists interested in behavioral measurement. Furthermore, all psychologists can relate to its ultimate aim set out by William James: to study mental processes that provide explanations for why people behave as they do in the world.

Culture and the plasticity of perception

2020 ◽  
Vol 43 ◽  
Author(s):  
Michael Lifshitz ◽  
T. M. Luhrmann
Keyword(s):  
Cultural Context ◽  
Sensory Experience ◽  
Cultural Learning ◽  
The World

Abstract Culture shapes our basic sensory experience of the world. This is particularly striking in the study of religion and psychosis, where we and others have shown that cultural context determines both the structure and content of hallucination-like events. The cultural shaping of hallucinations may provide a rich case-study for linking cultural learning with emerging prediction-based models of perception.

Sign in / Sign up

Export Citation Format

Share Document