Abstracts - CDT Nº 36


Dossier Teaching in Science Exact and Natural Sciencias   


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Evaluation of Strategies for Information Processing in Teaching Experimental Sciences*

Kindsvater, Norma M.**; Martinelli, Enrique A.**; Arévalo, Néstor**; Lapalma, Lidia**; Rodríguez Daniel O.**; Tesouro, Ramiro A.**; Farabello Sergio P.**; Fava, Lorena M.E.**

Key words: teaching Science, Inorganical Chemestry, Physics, thinking skills

Professors of Inorganic Chemistry and Physical courses explore the students' difficulties from thinking over their own educational practices in order to produce

knowledge useful to contribute theoretical and practical elements for research

and didactic innovation. The procedural contents are used as indicators of difficulty. Each course has its own strategy to explore difficulties; its application proves to be innovative for its characteristics: evaluation is performed on how the students process the information rather than how much of it they retain. The difficulties are set more clearly, showing connections between the management of learning strategies and the students' perfomance, their perception and evaluation on their own abilities and difficulties, their concepts of teaching and learning. This knowledge should sustain a reconfiguration of teaching strategies, one able to facilitate the acquisition, organization, elaboration and recovery of the students' knowledge on these experimental sciences.

* This paper derives from a research project led at the Faculty of Bromatology, Universidad Nacional de Entre Ríos (Argentina), during 2003 and 2004; submitted in August 2007, admitted in December 2007.

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** Faculty of Bromatology, Universidad Nacional de Entre Ríos, Gualeguaychú, Argentina.



Physics I: the Opportune Space and Time to Develop Students Capabilities at the First Course of Engineering*

Monzón, Graciela S.**; Di Paolo, José**

Key words: Physics teaching, undergraduate level, capabilities, colloquy lessons,

university student retention

To obtain significant learning of Physics in the first year of Bioengineering, we

are offering students a weekly lesson on Colloquy, in which we encourage

continuous self evaluation of the comprehension of the contents of Mechanics

and we challenge them to justify their answers, overcoming the limitations natural

of their age and previous academic preparation. Colloquy lessons constitute

a link between theory and practice and are based on guides that include selected

and organized issues. The increasing percentage of students attending the course

and the level of passing grades in the final exams (based on the colloquy guides)

are encouraging. That is the reason why we believe that Colloquy lessons

strongly contribute to the development of basic skills like reading comprehension,

coherent writing and oral expression. At the same time, mental skills such as

description, interpretation and reasoning are also fostered.

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*) This paper derives from the teaching activity of the authors in Physics I, at the Faculty of Engineering, Universidad Nacional de Entre Ríos, Oro Verde, Argentina; submitted in June 2007; admitted in April 2008.

**) Faculty of Engineering, Universidad Nacional de Entre Ríos, Oro Verde, Argentina.



Humanities - Social Sciences 


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Political Practices in Late Century Argentinean Universities*

Ma. Silvia C. Dosbá**, Martha Benedetto, Carina Muñoz, Alicia Naput

Key words: Political practices, subjects, speech, university, hegemony

This research concerned a field of complex intersections among forms of knowledge, manners of participation and the shaping up of power relations, condensed in what we call political practices. The focus was placed upon inclusion/exclusion relations in productivity exigencies, demands of professional improvement, modes of institutionalizing knowledge, academic practices conditions and remunerated research. Converging into this dynamics, forwarding outcomes are produced, starting from forms of sociality and fragmentation effects in cliental, contractual, competitive, subordinating, resistant relations in academic life bound to restrictive policies, which are the object of this research.

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*) This paper presents results of a research project UNER # 3078 led at the Faculty of Educational Sciences, Universidad Nacional de Entre Ríos, Paraná, Argentina; submitted in Dec. 2006; admitted in Dec. 2007.

**) Faculty of Educational Sciences, Paraná, Argentina UNER. silviaduluc@hotmail.com


The Option Between Individual and Group. An Analysis of Two Teaching Models at University Level*

Roselli, Néstor D. **

Key words: Educational Psychology, teaching, instructional models, collaborative

learning, teamwork

The objective of this action-research was to compare two teaching models: one

based on an individualistic conception of learning, and the other one dealing

with a more social approach (learning by groups). In the individualistic condition

teaching follows the traditional way: the professor explains the subject while students take notes. In the social condition students were invited to form groups of

four members. Each group had to work by itself reading the bibliography and

answering the guide-questions given by the professor, all that under the expert

monitoring. The efficacy of both models in order to learning results is analyzed

in this paper by means of two evaluations across the teaching development.

Some other traits of each model are considered, concluding in the respective

positive and negative aspects.

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*) This paper derives from the research project UNER # 3037, lead at the Faculty of Educational Sciences, Universidad Nacional de Entre Ríos (UNER), Argentina, during 2003 y 2004; submitted in Setember 2007 and admitted in March 2008.

**) Faculty of Educational Sciences, Universidad Nacional de Entre Ríos, Paraná, Argentina;

CONICET, Rosario, Argentina. roselli@irice.gov.ar


Worker Cooperatives and Small Solidarity Companies in the Paraná Microregion (Argentina)*

Barbosa, Oscar G.**; Mingo, Graciela***; Grippo, Rodolfo***; Reziale, Edgar***; Gamarci, Andrés***; Corvoisier, Fernando***

Key words: Economy, worker cooperatives, small solidarity companies, local


The relationship between unemployment, poverty, social economy and local

development is analyzed. It is argued that to overcome subsistence levels, it is

necessary to introduce cooperative initiatives in an articulated and advanced

work economy system based on a local development strategy capable of

embodying a true social and technological innovation system throughout the

country. During the 1990s several cooperatives disbanded. After 2001,

conditions have provided a favourable setting. Some difficulties are encountered

in generating an innovation system at the local level; this issue is not usually

included in the Government's agenda, or in the agenda of the cooperative

organizations. Despite successful experiences, cooperativism does not act as

a social movement. The active employment policies of national and local

governments that promote the formation of worker cooperatives are valuable,

but they do not guarantee sustainability and institutional or actors' autonomy in

the future.

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*) This paper derives from UNER research project # 4033, lead at the Faculty of Economical Sciences, Universidad Nacional de Entre Ríos (Argentina); submitted in Octubre 2007, admitted en febrero 2008.

**) Faculty of Economical Sciences, Universidad Nacional de Entre Ríos, and CERIDE / CONICET (Santa Fe), Argentina. cparana@santafe-conicet.gov.ar

***) Faculty of Economical Sciences, Universidad Nacional de Entre Ríos

Feliciano and Loventué: two Models of Territorial Development*

Truffer, Isabel B.**; Torrado Porto, Roberto***; Valentinuz, César****

Key words: Rural economy, territorial development, management of development,

comparative case study

Under the current revisions of the Argentine institutions, the political departments

of Loventué in the Province of La Pampa and Feliciano in the Province of Entre Rios initiated actions to revert their increasing levels of poverty. Loventué did it through a short process of endogenous characteristics which began during 2002, with citizen participation and the organization of an assembly, growing towards new institutional forms such as the Loventué Foundation for Regional Development (FLDR). Feliciano began its exogenous process in 1993, from an increased institutional complexity leading to the constitution of a Transient Institutional Union. Both processes had their origin and articulation at state institutions. In view of those experiences we tried to determine the underlying models of the new institutional forms and the ways to combine them with preexisting institutions. From a qualitative approach, we made a comparative analysis of results from both descriptions, trying to systematize on preliminary basis different models of the management of development.

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*) This paper results from the PID UNER #2102 and PNE INTA #1313; preliminary paper

presented and accepted at the 7th Latin American Congress on Rural Sociology, Quito,

Novembre 2006; submitted in June 2007 , admitted in Novembre 2007.

**) Faculty of AGricultural Sciences (Oro Verde) and Faculty of Bromatology (Gualeguaychú), Universidad Nacional de Entre Ríos, Argentina.

***) Instituto Nacional de Tecnología Agropecuaria (INTA), La Pampa-San Luis Region,

EEA Anguil, Argentina.

****) INTA, Entre Ríos Region, EEA Paraná, Argentina.


Exact y Natural Sciences


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Intelligent System for the Alarms Treatment in Anesthesiology*

Drozdowicz, Bartolomé**; Hadad, Alejandro***; Evin, Diego**; Salvatelli, Adrian**; Kohan, Diana**

Key words: Bioengineering, Alarms in Anesthesiology, Multiagent System, Neural Networks, Bayesian Networks

The development of an Information System is described. Its aim is to analyze the monitorized signals during the anesthesiological processes, considering the patient and surgery data in order to minimize the false alarms and improve the quality of the information used by the anesthesiologists. The System Architecture is based on Intelligent Agents: Diagnosticator composed by Neural Networks models, Guardian which uses algorithms from the Multivariate Statistic Processes Control, Validator which contains Bayesian Networks models and the Alarm Generator Agent. The Gaia methodology was used for the System design, considering the Roles, Activities and Agents Models. As reference cases, patients with different level of Acute Hemorrhage (100, 300, 500, 700 and 900 ml/min) were considered.

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*) This paper presents the results of the research project UNER # 6066, Faculty of Engineering, Universidad Nacional de Entre Ríos; submitted in september 2007; admitted en December 2007.

**) Facultad de Ingeniería, Universidad Nacional de Entre Ríos, Oro Verde, Argentina.


***) Instituto de Desarrollo y Diseño -INGAR, Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Santa Fe, Argentina, y Facultad de Ingeniería, Universidad Nacional de Entre Ríos, Oro Verde, Argentina.


Milk Production in an Improved Native Forest and Natural Grassland System

Casermeiro José R.**; Spahn, Estela**; De Petre, Antonio**; Valenti, Ricardo**; Butus, Marina**; Díaz, Eduardo**; Duarte, Oscar**; Chajud, Aníbal**; Rosales, Elena**; Montiel, Juliana**

Key words: Agricultural Sciences, milk production, improved grassland, silvopastoral system

The grassland milk production from an improved native forest was evaluated to

demonstrate the feasibility to generate systems of sustainable milk production for small producers from the North of the Entre Ríos Province. The grassland and native forest composition and condition, as well as the grassland quality and production were assessed and the soil in its chemical-physical and nutritional and chemical aspects were characterized. The lots subdivision, the grassland rests, the forage availability, the animal rotation, the adequate grazing rate, the forest cleaning and inter-seed are key tools for sustainability and rentability. The native grassland constitutes the most comfortable environment for animals, forage species and the soil. Small producers can produce milk in an improved sheepherding system without assuming implantation and maintenance costs implied in milk production with cultivated grazing lands.

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*) This paper presents results of the Research Project UNER #2084, developed at the Faculty of Agricultural Sciences, Universidad Nacional de Entre Ríos (UNER), Argentina, during 2000-2005, funded by the SICTFRH, UNER; submitted in September 2007; admitted in February 2008.

**) Faculty of Agricultural Sciences, Universidad Nacional de Entre Ríos (UNER), Oro Verde,Oro Verde, Argentina. casermei@fca.uner.edu.ar