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This paper aims at examining the representation of a differentiated education project school, a school model, teacher and student from Anísio Teixeira's trip report, product of his observations and studies in North American's school. In 1927, when Anísio was general director of Bahia's public education he had been designated, by Francisco Marques de Góes Calmon to go to USA to observe American's education method and their institution education which could be implanted in similar way in Bahia's school. Considering the goal of the text, firstly I'm going to work work on Anísio Teixeira's trip report detaching his production goal, organization, physic character, materials and reasons of its circulation. Secondly, I'll reflect on his written production, in the way to comprehend education model representation considered ideal, of school, of teacher and student that were related to ideals of new education. As a research result, an observation work, report was produced as an intentionality and to be publicized. Anísio intended to share experiences, to valorize, to affirm, to project, to diffuse education model initiatives. He shows education transformations and a new scholar culture worldwide shared. Anísio brings out - in his point of view - characters of scholar space, educational methods, scholar programs, modes of being a teacher and a student in that moment. [ABSTRACT FROM AUTHOR]

ANALYSIS OF ON-LINE PPP SERVICE (GDGPS - APPS) FOR DUAL-FREQUENCY RECEIVERS: A STUDY INVOLVING DATA FROM RBMC STATIONS. The PPP (Precise Point Positioning) is a positioning method by GNSS (Global Navigation Satellite System) that has gained great popularity, due to on-line services for processing, most of them available for free. The PPP requires GNSS data from a unique receiver and the use of precise ephemeris and corrections. One of these freely available on-line PPP processing services is the APPS (Automatic Precise Positioning Service), a post-processed mode from NASA, and derivated from GDGPS (Global Differential GPS), which is a real-time GPS monitoring system with more than 100 globally distributed stations. This paper is focused on the evaluation of the APPS processing service to GPS data corresponding to a period of 30 days from the Brazilian stations POAL and IMPZ, respectively located in the South and North of Brazil, which belong to the official network of SIRGAS reference system. Each daily file contains 24 hours of observations with collection rate of 15 seconds, and it was processed time tracking of 2, 4, 6 and 24 hours. The daily coordinates of these stations, estimated by the PPP, have been updated to the SIRGAS2000 reference's epoch (2000,4), and compared with the official station coordinates. The discrepancies to a time tracking of 24 hours showed root mean square error less than 2 cm, both in planimetry and altimetry, which attests the potential use of PPP/APPS in high-accuracy applications, as geodynamic studies. It also shows an improve of accuracy of few millimeters when the time tracking increases to four hours, and minor or statically similar error variances when the time was six hours. [ABSTRACT FROM AUTHOR]