Angkor University

Com a revolução digital e o papel que a internet desempenha na vida das pessoas, o acesso à informação tornou-se mais fácil e rápido. Como resultado, os educandos são expostos a uma infinidade de conteúdos. É um desafio selecionar aqueles que realmente possam subsidiar a construção de um conhecimento sólido, crítico e relevante. Esta ação pode ser denominada de curadoria do conhecimento. Pensando na educação dos adultos os quais, não raramente, dividem o tempo de estudos com diversas outras atividades, há que se pensar em metodologias que facilitem o processo de ensino-aprendizagem. Assim, além da curadoria do conhecimento, temos a Aprendizagem Baseada em Problemas (ABP), metodologias essas, eficazes para aplicação, dentre outras, na andragogia. Dessa forma, propomos o seguinte problema de pesquisa: como a curadoria do conhecimento e a ABP podem ser úteis na andragogia. Os objetivos específicos são: definir curadoria de conhecimento; aprendizagem baseada em problemas; e andragogia. Cumpridos esses objetivos, chegaremos ao nosso objetivo geral: identificar na curadoria do conhecimento e na ABP elementos funcionais para aplicação na andragogia. Com isso, conseguiremos chegar à resposta para o nosso problema de pesquisa. A metodologia para este trabalho está pautada na pesquisa de natureza básica com abordagem qualitativa, de cunho exploratório-descritivo, com revisão bibliográfica e análise de conteúdo. O embasamento teórico está pautado em obras de: BARELL, CORTELLA e DIMENSTEIN, DEWEY, FOFONCA e CAMAS, FREIRE, HAMZE, KUBRUSLY LEITE e AFONSO, LOPES, SOMMER, MIHAILIDIS, MORAN, NOGUEIRA, SAUL e SAUL, SIZANOSKY, SOUZA, STEIMER, TOLEDO JÚNIOR, e repositórios eletrônicos de pesquisa.

At present, there is very limited information on the ecology, distribution, and structure of Cambodia’s tree species to warrant suitable conservation measures. The aim of this study was to assess various methods of analysis of aerial imagery for characterization of the forest mensuration variables (i.e., tree height and crown width) of selected tree species found in the forested region around the temples of Angkor Thom, Cambodia. Object-based image analysis (OBIA) was used (using multiresolution segmentation) to delineate individual tree crowns from very-high-resolution (VHR) aerial imagery and light detection and ranging (LiDAR) data. Crown width and tree height values that were extracted using multiresolution segmentation showed a high level of congruence with field-measured values of the trees (Spearman’s rho 0.782 and 0.589, respectively). Individual tree crowns that were delineated from aerial imagery using multiresolution segmentation had a high level of segmentation accuracy (69.22%), whereas tree crowns delineated using watershed segmentation underestimated the field-measured tree crown widths. Both spectral angle mapper (SAM) and maximum likelihood (ML) classifications were applied to the aerial imagery for mapping of selected tree species. The latter was found to be more suitable for tree species classification. Individual tree species were identified with high accuracy. Inclusion of textural information further improved species identification, albeit marginally. Our findings suggest that VHR aerial imagery, in conjunction with OBIA-based segmentation methods (such as multiresolution segmentation) and supervised classification techniques are useful for tree species mapping and for studies of the forest mensuration variables.

We present extensive tables of bolometric corrections and interstellar extinction coefficients for the WFPC2 and ACS (both WFC and HRC) photometric systems. They are derived from synthetic photometry applied to a database of spectral energy distributions covering a large range of effective temperatures, surface gravity, and metal content. Carbon stars are also considered. The zero-points take into consideration the new high-accuracy Vega fluxes from Bohlin. These tables are employed to transform Padova isochrones into WFPC2 and ACS photometric systems using interstellar extinction coefficients on a star-to-star basis. All data are available either in tabular form or via an interactive web interface in the case of the isochrones. Preliminary tables for the WFC3 camera are also included in the database.