Abstracts - CDT Nš 41


Humanities - Social Sciences  



Humanities – Social Sciences

Public urban passengers transport service: when competition might not be desirable




This paper is intended to show that introducing competition in the urban transport of passengers service is counterproductive and it aims at refuting the implications of the competitive paradigm in the theory of regulation. The study undertaken focused on how the presentation of the service evolved between the years 1994 and 2004 in Paraná City (Province of Entre Ríos, Argentina), which had 237,968 inhabitants and an urban surface of 43 square km at the moment of the 2001 National Census. Being 1994 the year when certain measures that implied partial deregulation of the service were introduced, it is shown here why it is considered like such and the impact of those measures on the functioning of the urban transport of passengers service is analyzed. A critical vision of the competitive paradigm and its implications on the theory of regulation might be attained by means of examining that process.

Key words: economy, public passenger transport, market regulation, public service, competition
Artículo derivado del PID UNER Nº 4030, Facultad de Ciencias Económicas, Universidad Nacional de Entre Ríos –UNER–, financiado por UNER y por convenio con el H. Concejo Deliberante de la ciudad de Paraná; recibido en noviembre 2009, admitido en junio 2010. Autor: Profesor Titular Ordinario de Economía de la Empresa, Facultad de Ciencias Económicas, UNER (Paraná, Argentina). E-mail: mariomathieu@arnet.com.ar

Dairy farmers and cheese-makers from San Martin Colony (Entre Rios, Argentina)

Mingo, Graciela; Fontanetto, I. Laura; De Isasi, M. Cristina; Facendini, M. Rosa; Orsini, Germán; Werner, Mario.



This article presents an analysis of the activity of the dairy farmers who also produce cheese in San Martin Colony, Parana County, Western Milk Field from the Entre Rios Province (Argentina). Six cases have been studied by identifying the means of work, training, life trajectory, quality standards in cheese production and the trade circuits. There have been used sources of secondary information obtained from INTA (National Institute of Farming Technology) and the National Farming Census 2002. Semi structured interviews were applied in order to achieve a major contact with the informants. The results demonstrate that the dairy establishments are an occupation that provides an extra value to the economy of the region and that they adapt the quality standards to compete in the market what is favoured by the access to electrical energy. The commercialization of their products is carried out in the domestic market at local and regional level.

Key words: economy, public passenger transport, market regulation, public service, competition
Artículo derivado del PID UNER Cód. 4003, Directora: G. Mingo; Facultad de Ciencias Económicas, Universidad Nacional de Entre Ríos –UNER–; Informe Final aprobado por Res. C.S. Nº 180/09; recibido en noviembre 2009; admitido en mayo 2010. Una versión previa fue presentada al Plan Fénix y se encuentra disponible online. Autores: Cátedras: Metodología de la Investigación Económica y Social y Geografía Económica, Facultad de Ciencias Económicas, UNER (Paraná, Entre Ríos, Argentina). E-mail: gbevi@arnet.com.ar

Health education in health programes

Enria, Graciela*; Fleitas, Mirta*; Staffolani, Claudio**.



Under the name of Health Programmes there are usually included educational activities that show despaired implementation and poor impact. The present paper aims to describe the obstacles limiting to reach the intended health education objectives by means of identifying the particularities of different health programmes undertaken on Chagas Disease, Tuberculosis and HIV-AIDS prevention in Santa Fe Province and Rosario City (Santa Fe, Argentina). Our approach was derived from Michel Foulcault's proposals named as Archaeology of Knowledge, focussing on the speeches continuities and discontinuities that can be traced between each programme and the ways the proposed actions are accomplished.

Key words: health education, health programmes, health promotion
Artículo derivado de una investigación enmarcada en el Programa de I+D sobre Programas de Salud en la ciudad de Rosario (Argentina); recibido en noviembre 2009, admitido en agosto 2010. Autores: *Facultad de Ciencias Médicas de la Universidad Nacional de Rosario –UNR– (Rosario, Argentina). **Facultad de Ciencias Médicas de la UNR (Rosario, Argentina) y Facultad de Humanidades, Artes y Ciencias Sociales, Universidad Autónoma de Entre Ríos (Paraná, Argentina). E-mail: g.enria@yahoo.com.ar

Hydrocarbons and autonomic processes in Bolivia. Factors involved in its social fragmentation

Ceppi, Natalia



Bolivia is a clear example of a highly complex social structure with deep socio-economic, cultural and ethnic inequalities. The indigenous communities, as majority, have been historically relegated from the state structures. That exclusion was enhanced during the 90s in the XXth Century because the policies which were implemented increased the fractures and the social tensions. The rise to power of Evo Morales involved two important facts: the nationalization of oil and natural gas and the present Political Constitution after the national referendum on January 25, 2009. This constitutional text was part of critical situations that show the conflicts between government and opposition.

Key words: international relations, Bolivia, natural resources, political constitution, autonomies, conflicts
Una versión preliminar del presente artículo fue presentada como ponencia en el XXVIII Encuentro de Geohistoria Regional, IIGHI-CONICET, Resistencia (Argentina) 28-30 agosto de 2008; recibido en Julio 2009; admitido en agosto 2010. Autora: Facultad de Ciencia Política y Relaciones Internacionales, Universidad Nacional de Rosario (Rosario, Argentina). E-mail: nataliaceppi@yahoo.com.ar

Knowledge management model for measuring the productive capacity of research groups

Vásquez Rizo, Fredy Eduardo



Current organizations handle and produce several data and information. Many of these elements are underused or discarded when lacking the mechanisms and processes to transform them into useful knowledge. The study here presented was centered on data and information related with the research groups' productive capacity in a Colombian university (Universidad Autonoma de Occidente-UAO), using them for the generation of valuable knowledge through the construction of a model. Such model, which is based on indicators, allows to measure such productive capacity and to suggest some options to foster their possibilities of success in the Colombian summons for acknowledgment and measurement of research groups, established by the Administrative Department of Science, Technology and Innovation –Colciencias.

Key words: sciences of information, information management, knowledge management

El artículo expone resultados de una investigación para acceder al título de Magister en Ciencias de la Información y Administración del Conocimiento-MIK, del Instituto Tecnológico y de Estudios Superiores de Monterrey-ITESM, México; recibido en diciembre de 2009 y admitido en agosto 2010; versión previa presentada como ponencia en el Congreso Internacional de Información INFO 2010, La Habana, Cuba, abril 19-23, 2010.

Autor: Coordinador del Sistema de Información de la Universidad Autónoma de Occidente (Cali, Colombia). E-mail: fvasquez@uao.edu.co

Humanities – Social Sciences

Milk and chesse microbiological quality according to different silages feeding

Etchevers, Francisco*; Zamboni, Enzo**; Della Giustina, Zandra*; Gieco, Adriana*; Gervasoni, Laura*; Gerard, María*; López, Guillermo*; Butus, Julio***; Cian, Marcela*



Feeding dairy cows with silage has been practiced in Argentina for more than five decades. Our research aimed to determine how ensiled forage consumption, duly characterized, may affect the microbiological quality of milk produced and its suitability for making hard cheeses. Cows milk production was monitored for two years in fortnight periods, the feeding varying for each treatment. Samples from each treatment were taken to analyze their quality and cheese like “Reggianito” was elaborated. The results show that in overmature maize silages there exists higher spores contamination than in mature maize silages. Citrus pulp silages presented the least contamination. No correlation was observed between milk and silage spores. In the case of cheese, a positive proportional relationship was determined between milk and cheese spores, but due to the elaboration process, spore presence was minimal producing no maturation problems.

Key words: food technology, cattle growing, milk, silage, cheese, defects
Artículo derivado del PID Nº 2082, Facultad de Ciencias Agropecuarias, Universidad Nacional de Entre Ríos –UNER–, Oro Verde (Entre Ríos, Argentina), Informe Final aprobado por Resol.CS. 257/ 08; recibido en agosto 2009, admitido en marzo 2010. Autores: * Facultad de Cs. Agropecuarias, Universidad Nacional de Entre Ríos. ** Facultad de Ingeniería Química, Universidad Nacional del Litoral (Santa Fe, Argentina). *** Escuela Aerotécnica “Las Delicias”, Consejo General de Educación, Gobierno de Entre Ríos (Aldea María Luisa, Entre Ríos, Argentina). E-mail: fetchevers@yahoo.com.ar

Energy balance in field vegetable crops in Rosario (Santa Fe, Argentina)

Denoia, J.*; Montico, S.**



The energy management in potato, tomato and lettuce production systems was analyzed in an area close to the city of Rosario (Argentina). All the material inputs and the yields were considered and transformed into energy units by means of multiplying the quantity of material by their energy contents. The direct as well as the indirect energy were analyzed. For the energy management, the physical limits of the system were considered. The indicators used were energy efficiency (EfE) and energy productivity (EP). The potato and tomato crops energy balances were negative while the energy output of the lettuce crop was lower than its input. Tomato crop showed the best energy efficiency (3.54) followed by potato crop (2.69). Energy efficiency was the least (0.25) in lettuce crop. Moreover, energy input in the tomato production was the most efficient (88.6 kgMS/100 Mj), followed by the potato (16 kgMS/100 Mj) and the lettuce (10.8 kgMS/100 Mj).

Key words: agricultural sciences, energy balance, energy efficiency, vegetable crops
El artículo se desarrolló en el marco del Proyecto “Valoración energética desde la producción de cereales y oleaginosas a los biocombustibles”, aprobado por la SECyT; Facultad de Ciencias Agrarias, Universidad Nacional de Rosario –UNR–; recibido en diciembre 2009, admitido en setiembre 2010. Autores: *Jefe Trabajos Prácticos, Cátedra Manejo de Suelos. ** Profesor Titular, Cátedra Manejo de Tierras, Facultad de Ciencias Agrarias, UNR (Zavalla, Santa Fe, Argentina). E-mail: jdenoia@unr.edu.ar

A study of changes in firmness of blueberries during ripening

Zapata, L.M.*; Malleret, A.D.*; Quinteros, C.F.*; Lesa, C.E.**; Vuarant, C.O.***; Rivadeneira, M.F.****; Gerard J.A.*****



Changes in firmness of blueberries during ripening were studied. O´Neal, Misty, Reveille and Emerald varieties of blueberries produced in the Salto Grande Region (Argentina) were analyzed using a TA-XT2i Texture Analyzer. Texture parameters decreased as the typical blueberry colour was developed. This fact would indicate that firmness decreases with maturation. Ripe blueberries showed maximun force values of 1,53; 1,94; 1,56 and 1,83N in O´Neal, Misty, Reveille and Emerald: slope 0,46; 0,62; 0,44 and 0,50N/mm; area: 1,76; 2,57; 2,20 and 2,30N mm; curvature: -0,13; -1,07; -0,25 and -0,13N/mm, final force: 0,36; 0,47; 0,39 and 0,75N respectively. Results indicate that the Misty variety showed the best texture, followed by Emerald, O´Neal and Reveille as higher values indicate firmer blueberries.

Key words: food technology, blueberries, texture
Artículo derivado de un proyecto de investigación de director novel, Directora: LM Zapata, 2007- 2009, Facultad de Ciencias de la Alimentación, Universidad Nacional de Entre Ríos –UNER– (Concordia, Argentina), financiado por UNER; recibido en julio 2009, admitido en agosto 2010. Autores: *Química Orgánica I, Facultad de Ciencias de la Alimentación, UNER. **Química Orgánica II y Laboratorios de Análisis Físicos y Químicos de Alimentos, Fac. Cs. de la Alimentación, UNER. *** Trabajo Final de Laboratorio y Química Analítica I, Fac. Cs. de la Alimentación, UNER. **** INTA Estación Experimental Concordia. ***** Fisicoquímica y Operaciones Unitarias I, Fac. Cs. de la Alimentación, UNER (Concordia, Argentina). E-mail: zapatam@fcal.uner.edu.ar

Logistic model conditioning for computerised assessment of mathematics competences

González, José*; Cabrera, Eduardo*; Montenegro, Eduardo*; Nettle, Alejandro*; Guevara, Miguel**



Concerned about improving the quality of education in the teaching of mathematics at university level we developed a proposal for parameterization of the logistic model based on the Theory of Item Response. This theoretical work is based on the processing of mathematical knowledge, incorporating the response time, parameter estimated from the rendering of virtual test; it is a process of precision in determining the level of math skills and tested in simulation experiences.

Key words: math teaching, item response model, three parameters logistic model
Artículo producido desde el Equipo del Laboratorio [EXPERIMENTAL] de Saberes Matemáticos (Equipo Lab[e]saM), Departamento de Matemática & Física, Facultad de Ciencias Naturales & Exactas, Universidad de Playa Ancha (Valparaíso, Chile); recibido en octubre 2009, admitido en agosto 2010. Autores: * Equipo Lab[e]saM, Depto de Matemática & Física, Fac. Cs. Naturales & Exactas, Universidad de Playa Ancha (Valparaíso, Chile). E-mail: labesam.upla@gmail.com ** Académico del Depto de Ingeniería, Facultad de Ciencias Naturales & Exactas, Universidad de Playa Ancha, Valparaíso, (Chile).

Groundwater Management in Cerro Los Leones Neighborhood in Tandil (Argentina)

Rodriguez, Corina Iris*; Jacinto, Guillermina**; Ruiz de Galarreta, Alejandro*; Banda Noriega, Roxana*



The groundwater management in a peripheral neighborhood in Tandil –Cerro Los Leones-(Buenos Aires Province, Argentina), deprived of water supply and sewer, its social actors and the resource exploitation and use are considered in this paper. Previous studies have shown chemical and bacteriological water contamination which generates a health risk for population. Water exploitation and use conditions are characterized pointing out several faults in design, construction and maintenance of wells and cesspits. Facing the needs and the challenge posed by an integrated water resource management, several guidelines aimed to sustainability were defi ned, including water use planning, drinking water supplying, boreholes design and environmental education.

Key words:hydrogeology, integrated water resources management, Tandil
Este trabajo forma parte de la Tesis de Maestría en Ecohidrología (Universidad Nacional de la Plata) de la Lic. C.I. Rodriguez; recibido en abril 2010; admitido en setiembre 2010. Autores: *Centro de Investigaciones y Estudios Ambientales, Universidad Nacional del Centro de la Provincia de Buenos Aires –UNCPBA–. **Centro de Estudios Sociales de América Latina, UNCPBA, Tandil (Buenos Aires, Argentina). E-mail: corinairis@yahoo.com