A discussion on different techniques for GIS data collecting, precision, accuracy and quality of database

Nowadays, is a common sense the importance of geotechnologies in urban planning, transportation engineering and other different areas of knowledge. The Geographic Information System (GIS) is one of the geotechnologies that has been used increasingly. The collection of information and creation of a database are the most expensive, complex and important task in a GIS project. The collection of information results from the direct and indirect measurement of the real world. The reason for creating databases is to register and the maintain the different sources of collecting information. This paper has the objective to present the different techniques for data collection as input in GIS, as well as a brief discussion on the cost associated with the collection of data. Furthermore, comments on precision, accuracy and the quality of database are given.

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La investigación pretendió arrojar datos propios de la forma en que se comunican estudiantes de grados quinto y noveno de dos colegios diferentes de la Secretaría de Educación de Bogotá. Se escogieron dos grupos, los niños de quinto pertenecientes al colegio La Candelaria de la localidad de Santa Fe, que realizaron pinturas en su clase de artes plásticas, a quienes llamamos: artistas. Estas obras las entregaron a un joven de noveno del colegio San Francisco de Asís de la localidad Los Mártires, quien propuso cinco maneras diferentes de divulgar estas obras de arte, este rol es denominado: promotor. El artista al recibir la propuesta donde además, encuentra los datos de contacto del promotor, elige las tres que le parecen más interesantes y lo busca para informarle su decisión. La investigación recogió datos de los medios de comunicación que utilizaron artistas y promotores para acordar las piezas a desarrollar. Durante la investigación apareció una variable con la que no se contaba, la inclusión en el grupo de promotores del San Francisco de Asís, de una estudiante perteneciente al proyecto de aulas hospitalarias, lo que permitió una interacción diferente en medio del grupo, a través de un contacto netamente virtual la situación de salud de la compañera generó en el curso gran sentido de afectación que se evidenció en relaciones empáticas, respetuosas y solidarias, que también se reflejaron en el trato que tuvieron con los artistas."The research pretended to throw own data on how students from fifth and nineth grades, from two different schools of Secretaría de Educación de Bogota get communicated. Two groups were chosen, fifth grade children belonging to school La Candelaria in Santa Fe's locality, who made paintings in their art class, whom we call: artists. These Works were handed over to a school ninth grade student, from San Francisco dc Assis school, in Mártires"" locality, who proposed five different ways to disseminate these art works, this role is called: promoter. The artist, once the proposal was recieved, which also contained the promoter contact information, choose the three options that seem most interesting and seeks the promoter to inform its decision. The research collected data from comunication media, used from both artists and promoters who used to arrange the pieces to develop. During the investigation it appeared a variable that was not counted, the inclusion in the San Francisco's promoter group of a student belonging to the project of hospital classrooms, allowing different among the group interaction, through a purely virtual contact because of the health situation of this girl, wich generated in the course great sense of involvement that was evident in empathic, respectful and supportive relationships, which is also reflected in the deal they had with the artists. It was found that students with an exercise as this one, in soft skills such as problema solver, significantly improve their skills and it w^as found that our students still prefer direct contact."Magíster en EducaciónMaestrí

Estudo de método de transferência de eficiência usando detectores NaI(Tl)

A utilização de detectores cintiladores NaI(Tl) para medições implica na determinação da eficiência de detecção em função da energia dos fótons incidentes. A curva de eficiência pode ser obtida experimentalmente com a utilização de várias fontes mono energéticas calibradas com energias de emissão que abranjam todo o intervalo de interesse ou utilizando o método de Monte Carlo. O Instituto de Engenharia Nuclear desenvolve diversas metodologias usando estes detectores, pois são robustos, baratos e não precisam de resfriamento para sua utilização. A montagem de um arranjo experimental costuma ser complexa, pois vários fatores influenciam no resultado afetando a reprodutibilidade nas medições, tais como: paralelismo entre a fonte e o detector, alinhamento entre fonte e detector e precisão na distância fonte-detector. Diante de tais dificuldades, desenvolveu-se um sistema automatizado de posicionamento para o conjunto fonte-detector controlado por um micro controlador baseado na linguagem ARDUINO visando garantir a reprodutibilidade nos arranjos experimentais.Na fase inicial deste estudo desenvolveu-se um modelo matemático no código MCNP-X utilizando um detector NaI(Tl). Uma validação teórica usando o Método de Transferência de Eficiência foi realizada em três diferentes posições no eixo axial do detector (10,6 cm; 11,3 cm e 12,0 cm). Este método baseia-se na razão dos ângulos sólidos efetivos. A validação experimental apresentou erros relativos máximos de 7,74% para a posição 11,3 cm

Propuesta de mejora en el proceso de formación de envases de vidrio usando la herramienta SMED en la empresa Owens Illinois Peru S. A.

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Temperature dependent charge transport mechanisms in carbon sphere/polymer composites

Carbon spheres (CS) with diameters in the range $2 - 10 \mu m$ were prepared via hydrolysis of a sucrose solution at $200^o C,$ and later annealed in $N_2$ at $800^o C.$ The spheres were highly conducting but difficult to process into thin films or pressed pellets. In our previous work, composite samples of CS and the insulating polymer polyethylene oxide (PEO) were prepared and their charge transport was analyzed in the temperature range $80 K < T < 300 K.$ Here, we analyze charge transport in CS coated with a thin polyaniline (PANi) film doped with hydrochloric acid (HCl), in the same temperature range. The goal is to study charge transport in the CS using a conducting polymer (PANi) as a binder and compare with that occurring at CS/PEO. A conductivity maxima was observed in the CS/PEO composite but was absent in CS/PANi. Our data analysis shows that variable range hopping of electrons between polymeric chains in PANi-filled gaps between CS takes on a predominant part in transport through CS/PANi composites, whereas in CS/PEO composites, electrons travel through gaps between CS solely by means of direct tunneling. This difference in transport mechanisms results in different temperature dependences of the conductivity.Comment: 7 pages, 6 figure

Condensation of Vortex-Strings: Effective Potential Contribution Through Dual Actions

Topological excitations are believed to play an important role in different areas of physics. For example, one case of topical interest is the use of dual models of quantum cromodynamics to understand properties of its vacuum and confinement through the condensation of magnetic monopoles and vortices. Other applications are related to the role of these topological excitations, nonhomogeneous solutions of the field equations, in phase transitions associated to spontaneous symmetry breaking in gauge theories, whose study is of importance in phase transitions in the early universe, for instance. Here we show a derivation of a model dual to the scalar Abelian Higgs model where its topological excitations, namely vortex-strings, become manifest and can be treated in a quantum field theory way. The derivation of the nontrivial contribution of these vacuum excitations to phase transitions and its analogy with superconductivity is then made possible and they are studied here.Comment: 7 pages. Based on a talk given by R. O. Ramos at the Infrared QCD in Rio conference, Rio de Janeiro, Brazil, June 5-9, 200

High resolution system for nanoparticles hyperthermia efficiency evaluation

A system to evaluate nanoparticles efficiency in hyperthermia applications is presented. The method allows a direct measurement of the power dissipated by the nanoparticles through the determination of the first harmonic component of the in quadrature magnetic moment induced by the applied field. The magnetic moment is measured by using an induction method. To avoid errors and reduce the noise signal a double in phase demodulation technique is used. To test the system viability we have measured nanowires, nanoparticles and copper samples of different volumes to prove by comparing experimental and modeled result

Projeto copa do mundo 2014: o trabalho em grupos para o ensino de geografia

Anais do II Seminário Seminário Estadual PIBID do Paraná: tecendo saberes / organizado por Dulcyene Maria Ribeiro e Catarina Costa Fernandes — Foz do Iguaçu: Unioeste; Unila, 2014A partir de uma proposta ofertada pelo Programa Institucional de Bolsa de Iniciação à Docência (PIBID) da UEPG, entre os meses de maio e junho de 2014, aproveitando-se da realização da Copa do Mundo de Futebol no Brasil, o PIBID/CAPES/UEPG – sub projeto de Geografia realizou atividades com alunos do Ensino Fundamental, Ensino Médio e Ensino Técnico, voltadas para o ensino de Geografia com a temática “Copa do Mundo 2014”. As atividades engendradas em três escolas da rede pública estadual do município de Ponta Grossa – PR tiveram o intuito de desenvolver nos discentes a capacidade de trabalharem em grupos. Os professores supervisores do PIBID e os pibidianos supervisionaram e auxiliaram os alunos durante o andamento do projet

Estudo de viabilidade de rotas para produção de 124I

Este relatório visa pesquisar as reações de produção do 124I utilizando o Sb (3He e α) ou Te (próton e dêuteron) como alvos a fim de escolher uma rota para implementação de uma metodologia de irradiação e processamento químico do 124I utilizando o Cíclotron CV-28 do Instituto de Engenharia Nuclear, considerando o compromisso com o rendimento e com as impurezas do processo, custo de produção, além de manter o índice de confiabilidade atual obtido na produção do 123I e 18F