Presentació

Presentació del monogràfic sobre «Dialectologia catalana»

Joaquim Martí i Gadea com a lexicògraf i com a dialectòleg

The work of Joaquim Martí i Gadea, born in Alcoi, and mainly known as a folklorist as well as the founder of Valencian Dialectology, has plenty to offer to the modern lexicographer

Dos vocabularis d'oficis valencians del segle XVII. G. Tarraça (1636) i V. Exulve (1643)

The article discusses the confrontation between these two Valencian vocabularies from 1636 and 1643, and analyzes the lexical features that are most relevant to the history of the language

Un tast dels vocabularis bilingües valencians actuals

By means of a choice of seventy words, this work shows the lexical richness and the degree of acceptance of the guidelines –defined in the Diccionari General de Llengua Catalana by Pompeu Fabra– regulating nine bilingual Valencian/Castilian and Castilian/Valencian vocabularies published between 1972 and 1993

A proposal on how to apply the balanced scorecard to the collective investment managerial firms

lity. Consequently these firms need to reformulate their strategic forecast for the next years. This need arises, among other factors, from the collapse of global financial markets, progressive liberalizations in tax and company regulation and the evolution in information technology. Collective investments are very appealing for small investors, as they allow them to benefit from the skills of a professional management, as well as to spread different risks with a diversified portfolio in the different mutual funds. Nevertheless in moments of crisis such as the world is experiencing now, the great volatility of markets and capital losses clearly offset the attractiveness of the portfolio management. The starting point is to take into account the new scenario now developing in collective investment management firms: increasing competence, less captive clients, a more independent sales force, and decrease in their P&L account. With this background we propose to use a planning tool that, in the last ten years, has proven itself to be a great help in improving the management of the firms. The aim is to identify their core activities in order to define a better strategy, gain new clients, and improve the quality of their services. The final purpose is to increase their return on investment. Taking into account all the above mentioned reasons we have considered the collective investment management firms in Spain a good field to apply Balanced Scorecard as a device to improve management control . In our research paper, we propose a balanced scorecard model, exploring three possible strategic scenarios, together with an operating simulation of this device with a five years´scope for these type of firms. To obtain this model we have used dynamic systems theory and other information technology instruments.

Sub-camera calibration of a Penta-camera

Penta cameras consisting of a nadir and four inclined cameras are becoming more and more popular, having the advantage of imaging also facades in built up areas from four directions. Such system cameras require a boresight calibration of the geometric relation of the cameras to each other, but also a calibration of the sub-cameras. Based on data sets of the ISPRS/EuroSDR benchmark for multi platform photogrammetry the inner orientation of the used IGI Penta DigiCAM has been analyzed. The required image coordinates of the blocks Dortmund and Zeche Zollern have been determined by Pix4Dmapper and have been independently adjusted and analyzed by program system BLUH. With 4.1 million image points in 314 images respectively 3.9 million image points in 248 images a dense matching was provided by Pix4Dmapper. With up to 19 respectively 29 images per object point the images are well connected, nevertheless the high number of images per object point are concentrated to the block centres while the inclined images outside the block centre are satisfying but not very strongly connected. This leads to very high values for the Student test (T-test) of the finally used additional parameters or in other words, additional parameters are highly significant. The estimated radial symmetric distortion of the nadir sub-camera corresponds to the laboratory calibration of IGI, but there are still radial symmetric distortions also for the inclined cameras with a size exceeding 5μm even if mentioned as negligible based on the laboratory calibration. Radial and tangential effects of the image corners are limited but still available. Remarkable angular affine systematic image errors can be seen especially in the block Zeche Zollern. Such deformations are unusual for digital matrix cameras, but it can be caused by the correlation between inner and exterior orientation if only parallel flight lines are used. With exception of the angular affinity the systematic image errors for corresponding cameras of both blocks have the same trend, but as usual for block adjustments with self calibration, they still show significant differences. Based on the very high number of image points the remaining image residuals can be safely determined by overlaying and averaging the image residuals corresponding to their image coordinates. The size of the systematic image errors, not covered by the used additional parameters, is in the range of a square mean of 0.1 pixels corresponding to 0.6μm. They are not the same for both blocks, but show some similarities for corresponding cameras. In general the bundle block adjustment with a satisfying set of additional parameters, checked by remaining systematic errors, is required for use of the whole geometric potential of the penta camera. Especially for object points on facades, often only in two images and taken with a limited base length, the correct handling of systematic image errors is important. At least in the analyzed data sets the self calibration of sub-cameras by bundle block adjustment suffers from the correlation of the inner to the exterior calibration due to missing crossing flight directions. As usual, the systematic image errors differ from block to block even without the influence of the correlation to the exterior orientation

ON OUTLIER DETECTION IN A PHOTOGRAMMETRIC MOBILE MAPPING DATASET

Various types of technology are used for Terrestrial Mobile Mapping (TMM) such as IMU, cameras, odometers, laser scanner etc., which are integrated in order to determine the attitude and the position of the vehicle in use, especially in the absence of GNSS signal i.e. in an urban canyon. The aim of this study is to use only photogrammetric measurements obtained with a low cost camera (with a reduced focal length and small frames) located on the vehicle, in order to improve the quality of TMM solution in the absence of a GNSS signal. It is essential to have good quality frames in order to solve this problem. In fact it is generally quite easy to extract a large number of common points between the frames (the so-called 'tie points'), but this does not necessarily imply the goodness of the matching quality, which might be uncorrected due to the presence of obstacles that may occlude the camera sight. The Authors used two different methods for solving the problem of the presence of outliers: RANSAC and the Forward Search. In this article the Authors show the results obtainable with good quality frames (frames without occlusions) and under difficult conditions that simulate better reality