scholarly journals O lugar da cartografia no ensino de geografia: perspectivas a partir de um projeto de extensão

GeoTextos ◽  
2013 ◽  
Vol 9 (1) ◽  
Author(s):  
Erika Do Carmo Cerqueira ◽  
Dária Maria Cardoso Nascimento
Keyword(s):  
New Technologies ◽  
School Context ◽  
Three Dimensional ◽  
Pedagogical Practice ◽  
State School ◽  
Dimensional Representation ◽  
Three Dimensional Representation ◽  
Innovative Methodology ◽  
Do So

Este trabalho visa discutir o lugar e/ou papel da cartografia no ensino da geografia. Para isso, traz resultados teóricos e práticos do projeto de pesquisa e extensão intitulado “Popularização da cartografia e suas novas tecnologias na escola pública”, realizado no Colégio Estadual Dona Mora Guimarães (Cajazeiras X, Salvador BA). Considera-se que a cartografia escolar, apesar dos avanços epistemológicos, vem passando por diversas dificuldades em sua implementação. Para analisar os entraves, potencialidades e exemplos de práxis pedagógicas, realizaram-se oficinas com foco nos conceitos da alfabetização cartográfica – visão vertical/horizontal, lateralidade, decodificação dos símbolos, proporcionalidade, representação bidimensional X tridimensional e uso de novas tecnologias. Defende-se que a alfabetização cartográfica pode ser utilizada como uma metodologia inovadora para a geografia escolar. Em paralelo, são discutidas as dificuldades encontradas em âmbito universitário e escolar. Por fim, dividem-se experiências exitosas, com mais de 400 alunos envolvidos diretamente, que utilizaram recursos técnico metodológicos a partir do espaço vivenciado e da abordagem construtivista, a saber: mapeamento do corpo humano, da sala de aula e construção de maquetes. Conclui-se que o tema possui muitos desafios, mas carece principalmente da ampliação deste debate para ultrapassar as barreiras dissociativas, colocando a cartografia como meio de comunicação da ciência geográfica. Abstract THE ROLE OF CARTOGRAPHY IN THE TEACHING OF GEOGRAPHY: PERSPECTIVES FROM AN EXTENSION PROJECT This paper aims to discuss the role of cartography in the teaching of geography. In order to do so it brings theoretical and practical results of the research project and extension called “Popularization of cartography and its new technologies in public school,” held in the State School Dona Mora Guimarães (Cazajeiras X, Salvador- BA). It is considered that the teaching of cartography, despite the epistemological advances, has experienced several difficulties in its implementation. To analyze the barriers, potentialities, and examples of pedagogical practice, workshops were held focusing on the concepts of cartographic literacy - vision vertical/horizontal, laterality, decoding of symbols, proportionality, two-dimensional X three-dimensional representation and use of new technologies. It is advocated that cartographic literacy can be used as an innovative methodology for the teaching of geography in schools. In parallel, the difficulties found in a university and school context are discussed. Finally, successful experiences are shared with more than 400 students involved directly, who used technical and methodological resources, from where they live and constructivist approach, namely: mapping of the human body, of the classroom and building of models. It is concluded that the theme has many challenges, but lacks mainly the expansion of this debate to overcome the dissociative barriers, putting the cartography as means of communication of the geographical science.

The Sahara

2017 ◽  
Author(s):  
Barbara E. Barich
Keyword(s):  
Human Body ◽  
Manufacturing Process ◽  
Three Dimensional ◽  
Two Dimensional ◽  
Dimensional Representation ◽  
Three Dimensional Representation ◽  
The Difference ◽  
Symbolic Content ◽  
The Relationship

This chapter discusses the collection of objects, in clay and stone, from various pastoral Saharan sites whose original core area lay between Libya (Tadrart Acacus) and Algeria (Tassili- n-Ajjer). The chapter starts from the general theme of the relationship between the figurines and the subjects they represent, and the difference between two-dimensional and three-dimensional representation. It goes on to discuss the manufacturing process of the clay specimens (dating from between 7000 and 4000 years ago) and the significance of the changes introduced by the Neolithic. Most of the items studied fall into the category of zoomorphic figurines, with only two anthropomorphic examples, and find in the depiction of cattle their most striking subject. These representations possess an evident symbolic content which must be framed within the pastoral ideology of the Saharan Neolithic. In the anthropomorphic figurines the representation of the human body also plays the role of recapturing the sense of wholeness.

Revealing gross three-dimensional structure in the SEM

1987 ◽  
Vol 45 ◽  
pp. 656-657
Author(s):  
Sterling P. Newberry
Keyword(s):  
Freeze Drying ◽  
Three Dimensional ◽  
Dimensional Structure ◽  
Small Object ◽  
Final Solution ◽  
Dimensional Representation ◽  
X Ray ◽  
Three Dimensional Representation ◽  
Freeze Dried ◽  
Critical Point Drying

The beautiful three dimensional representation of small object surfaces by the SEM leads one to search for ways to open up the sample and look inside. Could this be the answer to a better microscopy for gross biological 3-D structure? We know from X-Ray microscope images that Freeze Drying and Critical Point Drying give promise of adequately preserving gross structure. Can we slice such preparations open for SEM inspection? In general these preparations crush more readily than they slice. Russell and Dagihlian got around the problem by “deembedding” a section before imaging. This some what defeats the advantages of direct dry preparation, thus we are reluctant to accept it as the final solution to our problem. Alternatively, consider fig 1 wherein a freeze dried onion root has a window cut in its surface by a micromanipulator during observation in the SEM.

scholarly journals Structured-light 3D scanning of exhibited historical clothing—a first-ever methodical trial and its results

2021 ◽  
Vol 9 (1) ◽  
Author(s):  
Jerzy Montusiewicz ◽  
Marek Miłosz ◽  
Jacek Kęsik ◽  
Kamil Żyła
Keyword(s):  
Cultural Heritage ◽  
Information Technologies ◽  
Structured Light ◽  
Three Dimensional ◽  
3D Models ◽  
3D Scanning ◽  
Dimensional Representation ◽  
3D Scanner ◽  
Three Dimensional Representation ◽  
3D Scanners

AbstractHistorical costumes are part of cultural heritage. Unlike architectural monuments, they are very fragile, which exacerbates the problems of their protection and popularisation. A big help in this can be the digitisation of their appearance, preferably using modern techniques of three-dimensional representation (3D). The article presents the results of the search for examples and methodologies of implementing 3D scanning of exhibited historical clothes as well as the attendant problems. From a review of scientific literature it turns out that so far practically no one in the world has made any methodical attempts at scanning historical clothes using structured-light 3D scanners (SLS) and developing an appropriate methodology. The vast majority of methods for creating 3D models of clothes used photogrammetry and 3D modelling software. Therefore, an innovative approach was proposed to the problem of creating 3D models of exhibited historical clothes through their digitalisation by means of a 3D scanner using structural light technology. A proposal for the methodology of this process and concrete examples of its implementation and results are presented. The problems related to the scanning of 3D historical clothes are also described, as well as a proposal how to solve them or minimise their impact. The implementation of the methodology is presented on the example of scanning elements of the Emir of Bukhara's costume (Uzbekistan) from the end of the nineteenth century, consisting of the gown, turban and shoes. Moreover, the way of using 3D models and information technologies to popularise cultural heritage in the space of digital resources is also discussed.

A Method for Measuring Deformation Rates in Hydrogel Structures: Multi-Plane Imaging and Measurement Limitations

2000 ◽  
Author(s):  
Joseph M. Bauer ◽  
David J. Beebe
Keyword(s):  
Cross Sections ◽  
Particle Image ◽  
Three Dimensional ◽  
Local Deformation ◽  
Dimensional Representation ◽  
Volume Changes ◽  
Mechanical Constraints ◽  
Seed Particles ◽  
Three Dimensional Representation ◽  
Image Velocimetry

Abstract A technique for determining the three dimensional motions of hydrogel structures in microchannels is introduced. In developing this technique, we have adapted microscopic particle image velocimetry (μPIV), a method for measuring velocity fields in microfluidic devices. The motions of 1 μm fluorescent seed particles that are incorporated into a hydrogel microstructure (200 μm tall × 400 μm diameter) are tracked over several expansion cycles using microscopy. Combining measurements taken in different planes produces a three-dimensional representation of the motions present during volume changes can be reconstructed. By providing cross sections of the local deformation rates in hydrogel microstructures, this technique allows for the optimization of device designs as well as providing a better understanding of the processes by which hydrogels change volume under mechanical constraints.

A CAD/CAM Representation Model Applied to Tolerance Transfer Methods

1998 ◽  
Author(s):  
Alain Desrochers
Keyword(s):  
Three Dimensional ◽  
Dimensional Representation ◽  
One Dimensional ◽  
Dimensional Tolerance ◽  
Representation Model ◽  
Three Dimensional Representation ◽  
Tolerance Chart ◽  
Cad Cam ◽  
Tolerance Charts

Abstract This paper presents the adaptation of tolerance transfer techniques to a model called TTRS for Technologically and Topologically Related Surfaces. According to this model, any three-dimensional part can be represented as a succession of surface associations forming a tree. Additional tolerancing information can be associated to each TTRS represented as a node on the tree. This information includes dimensional tolerances as well as tolerance chart values. Rules are then established to simulate tolerance chains or stack up along with tolerance charts directly from the graph. This way it becomes possible to combine traditional one dimensional tolerance transfer techniques with a powerful three-dimensional representation model providing high technological contents.

Has a fully three-dimensional space map never evolved in any species? A comparative imperative for studies of spatial cognition

2013 ◽  
Vol 36 (5) ◽  
pp. 557-557 ◽  
Author(s):  
Cynthia F. Moss
Keyword(s):  
Spatial Cognition ◽  
Dimensional Space ◽  
Large Body ◽  
Three Dimensional ◽  
Comparative Data ◽  
Dimensional Representation ◽  
Three Dimensional Representation ◽  
Space Coding ◽  
Three Dimensional Space

AbstractI propose that it is premature to assert that a fully three-dimensional map has never evolved in any species, as data are lacking to show that space coding in all animals is the same. Instead, I hypothesize that three-dimensional representation is tied to an animal's mode of locomotion through space. Testing this hypothesis requires a large body of comparative data.

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