Abstracts - CDT Nº 24
Humanities and Social Sciencies
[Index] - [Spanish]

Municipalities, Social Policies and State Decentralization

Raúl A. Moreno, Carlos A. Maín, Alfredo J. M. Carballeda

Key-Words: municipalities - social policies - decentralization - municipal management - General Ramírez
The aim of this research was to investigate about management strategies, which happen in the communes within the frame of the current discussion about municipalities and their revaluation, state decentralization, and Social Policies complexity. The research was focused on a case study from a fringe of intermediate communes with similar population and development features, since they would be the most affected by decentralization. The selected community was the municipality of General Ramírez, in the Province of Entre Ríos. There were three stages proposed to develop the work. The first one implied a deep theoretical investigation, selection of the case, and determination of analysis units. The second stage included field work aiming at a follow-up of the Municipality Social Policies, at characterizing the management by the government, and its positioning outside the commune. Both the findings and the analysis of the data obtained were solved simultaneously. Finally, a general understanding of the community being studied was attempted.

Description of the Scientific-Technological Field of the Universidad Nacional de Entre Ríos Based on Normalized Indicators

Isabel B. Truffer, Silvia M. Storani

Key-Words: ST&S (science, technology and society) studies - science and technology indicators - scientific-technological field - incentive program
In this article, some aspects of the Universidad Nacional de Entre Ríos scientific-technological field are described, during the 1994-1997 period, considering as agents the academic units themselves, and the university rectorship, according to indicators of consumables as defined by the RICyT (Red Iberoamericana de Ciencia y Tecnología - Ibero-American Network of S&T) for studies on scientific-technological activities. The variables taken into consideration are: Human Resources in S&T (indicators: researchers with incentives, researchers by gender, and researchers per 1000 of the Economically Active Population - EAP), and Expenses (considered as: amount allocated by Faculty). The analysis was enriched by incorporating another two variables: S&T Activity (indicators: number of research projects and distribution of projects by discipline areas) and Human Resources Training (pointers: number of Fourth Level Scholarships and of Scholarships in Research Introduction, both per Academic Unit).


Technical and Natural Sciencies, Ingeneering and Technology

Automatic Detection of Slight Changes in Nonlinear Dynamical Systems using Multiresolution Entropy Tools

M. E. Torres, M. M. Añino, L. G. Gamero, M. A. Gemignani

Key Words: Detection, nonlinear systems, wavelets, multiresolution entropy, principal components

The continuous multiresolution entropy has shown to be sensitive to parameter changes in complex dynamical systems whose detection can be accomplished by means of statistical detection and estimation techniques. In this paper we introduce a new tool, based on the continuous multiresolution entropy, for the automatic detection of slight changes in the parameters of a nonlinear dynamical system. This tool is applied to the analysis of time series and combines the wavelets localization advantages and the detection by means of statistical algorithms. The relevance of the approach, together with its robustness in the presence of moderate noise, is discussed in numerical simulations and is applied to biological signals.

PC-Based Magnification Meter For a Transmission Electron Microscope

José F. Vilá, Fernando D. Balducci

Key Words: electron microscopy, transmission electron microscope, scanning electron microscope, analogue-digital conversion, Delphi language
In order to improve the operation conditions of a Hitachi HU11C electron microscope, a personal computer, to which an A/D conversion board was added, was attached to the equipment. An electronic interface and a user graphic interface were developed. The developed software processes data and calculates magnification in real time. The curves representing magnification according to the microscope's operating parameters were approximated to through polynomial functions. The user interface makes it possible to see the operating and magnification parameters on screen. It also provides a help menu regarding the program as well as the operation of the various equipment's controls.


Agricultural and Medical Sciencies

Cryoscopic Descent in Raw Milk. Variation Interval for the Homogenous Ecological Zone Number 3 in the Province of Entre Rios

F. Etchevers, M. R. Gerard, Z. Della Giustina, A. Gieco, L. Gervasoni, G. Lopez

Key Words: raw milk - cryoscopy - ecological zone number 3 - Province of Entre Ríos
Measuring milk's freezing temperature, called cryoscopic descent, lets us assess -as a percentage- the amount of water contained. Legal values set to date do not coincide with current collections done by official and private organizations. The present project rose from the need to establish a regional value and its seasonal variations and its data will act not only as a reference for industries but also as a technical base for the modification of the regulations currently in effect. The project was developed by collecting milk samples from 35 milk farms in the Homogenous Ecological Zone Number 3 in the Province of Entre Rios. There were 488 milk pool samples collected and statiscally processed during two years in order to assess seasonal differences. The mean cryoscopy value for the studied area was -0.528ºC, with a 0.0087934 typical deviation. For the winter season the lowest mean value was observed (-0.533°C), while for the summer season the highest mean value was (-0.523°C). Intermediate values were recorded in spring and autumm. For the milk area in the South-West of the province, normal values were achieved in the remaining physicochemical analysis: pH, Dornic acidity, Fat, Non-fat solids and Total solids.