Browsing by Issue Date, starting with "2002-02-19"

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Influência da tensão residual no empenamento de peças aeronáuticas usinadas a partir de placas laminadas de ligas de aluminio da serie 7XXX
(Universidade Federal de São Carlos, 2002-02-19)
Hyodo, Alexandre
;
Bolfarini, Claudemiro
;
https://lattes.cnpq.br/9231627080617037
The fast growing of regional jets market has required from airframe manufacturers a prompt attending to market demands and the primary parts fabrication at a planned quality, quantity, and time at low costs. In order to achieve this, the process robustness is a key concept to be kept in mind, it means that the manufactured parts shall be conform to engineering specifications and geometric tolerances as well, regardless the raw material source used in machining process. Warping or machining distortion is one of the main problems identified during machining process. The corrective action for warping impacts the manufacturing lead-time, production costs, and production plan accomplishment. The influence of raw material on machining process performance is one of the main variables, is an assumption of this work. Recently, studies related to this approach have started and little technical literature is available. Otherwise, the availability of technical literature related to machining parameters, and cutting tools has been exhaustively explored. The aim of this work is to study the influence of material, in specific, the residual stress originated during thermo-mechanical processing of 7XXX series aluminum alloy plates, on warping of primary parts manufactured through milling machining. The layer removal method was the experimental technique chosen to measure the residual stress. Through this method is possible to determine the through thickness residual stress profile, the more suitable information for this study. In addition to this, the W parameter, which gives the average residual stress level per volume unit of plate and is a function of existing residual stress profile was also derived. It was correlated to warping level of machined from plates with several W parameter values. Parts machined from low W parameter values (lower than 1,0 kJ/m3) plates presented warping measurements remarkably lower than measurements made with parts machined from plates with W parameters values higher than 2,0 kJ/m3. This trend agrees with data available in literature and demonstrates the layer removal method results dependability, and its suitability to be applied for suppliers qualification purposes.
Utilizando XML para publicação de dados multimídia na web
(Universidade Federal de São Carlos, 2002-02-21)
Teixeira, Eduardo Cotrin
;
Vieira, Marina Teresa Pires
;
https://lattes.cnpq.br/5446518523049572
Oriented-Object Database Management Systems have been adopted for the management of multimedia applications, becoming possible to implement recovery forms that propitiate more expression capacity to the user if are foreseen metadata (information about the stored data) that assist in this task, providing a more natural and powerful form to find objects in the objects base. In this context project AMMO (Authoring and Manipulation of Multimedia Objects) appeared, aiming to provide an environment for support the authoring, storage and manipulation of multimedia applications. The developed work aims to implement automatic XML document creation for representation of multimedia data obtained as result of consultations to the Multimedia Objects Server (MmOS) of AMMO environment, preserving the advantages of this environment, as possibility of content-based search, semantics description of multimedia data and high reusability, associating them with XML advantages, as interchange facility, independence and flexibility in presentation form and semantics description of content. The XML concepts, the AMMO Project, the XML representation of multimedia data with semantic information, the creation and use of XML documents inside AMMO Project and some possible forms of visualization of the data through the XSL Style Sheets are presented.
Transformação de dataflex procedural para visual dataflex orientado a objetos reusando um framework
(Universidade Federal de São Carlos, 2002-02-22)
Nogueira, Adail Roberto
;
Prado, Antonio Francisco do
;
https://lattes.cnpq.br/2668568143800755
This work presents a strategy for transformation of legacies systems write in Procedural DataFlex (DFP), for systems in Objects Oriented Visual DataFlex (VDFOO) reusing a Framework, denominated DataFlex Application Framework (DAF), with architecture in three layers: interface, business rules and database. The transformation is accomplished in three steps: To "Organize Legacy Code", when it happens the organization of the legacy code in DFP; "Reemployments Organized Code" DFP, when the reemployment of the Organized Code DFP for VDFOO; and to Execute the VDFOO Code , when the code is executed in VDFOO with the same functionalities of the legacy code in DFP. The technologies used for the elaboration of this work are presented, involving Techniques for Reengineer, Transformations Systems, Languages Procedural DataFlex (DFP) and Objects Oriented Visual DataFlex (VDFOO) and DataFlex Application Framework (DAF). The Draco-PUC Transformation System is the main mechanism for automation of the transformations. To aid in the definition of the domains in Draco-PUC an editor of denominated domains it was built Draco Domain Editor (DDE), besides the parser and prettyprinter DFP and VDFOO. To automate the step "Organize Legacy Code", the Transformer of DFP was built for Organized DFP, and for the step "Reemployments Organized Code" DFP, the Transformer of Organized DFP was built for VDFOO. DDE is also used to define the script of execution of the transformers. The Transformation of DFP for VDFOO reuse a Framework in three layers: interface, business rules and database. The transformations of two systems are presented: Control of Orders, with about 20 thousand lines of legacy code; and the Integrated System for stores of sale s of cars (SIRC-X), with 5.3 million code lines.
Composição da avifauna da Estação Ecológica de São Carlos (Brotas-SP) e reserva ambiental da Fazenda Santa Cecília (Patrocinio Paulista)
(Universidade Federal de São Carlos, 2002-02-26)
Pozza, Didier David
;
Pires, José Salatiel Rodrigues
;
https://lattes.cnpq.br/3412204514901170
A quali-quantitative survey was carried out in two seasonal semideciduous forest fragments (75 and 100 ha) of interior of São Paulo state. The purpose was to characterize their bird communities concerning richness, abundance and species occurrence in these areas. The qualitative survey showed 145 species at Estação Ecológica de São Carlos-EESCar (Brotas) and 173 at Fazenda Santa Cecília-FSC (Patrocínio Paulista), whereas the quantitative survey revealed the presence of 60 and 72 species at EESCar and FSC, respectively. Only 4,14% of species in EESCar e 20,24% in FSC had specific frequency of occurrence over 75%. Analysing the abundance index values (IPA), we observed that number of species with low IPA was high at EESCar and at FSC. The small size and the isolation at EESCar might be responsible for its low species number IPA. In the FSC was also observed a bigger occurrence of endangered species for São Paulo state. The analysis of guildes is important to indicate the ecological conditions of one fragment. Apparently, the fragment at FSC has a better environmental quality to shelter more species, including the endangered. The study of this bird community is important for the elaboration of the conservation management plan of the natural areas.
Estudo da riqueza de Hymenoptera (Braconidae: Ichneumonoidea) em áreas de vegetação natural da APA de Descalvado, SP: subsídio para confecção de material paradidático
(Universidade Federal de São Carlos, 2002-02-26)
Cirelli, Kátia Resende Netto
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Dias, Angélica Maria Penteado Martins
;
https://lattes.cnpq.br/8637344058859147
A survey of the Braconidae (Hymenoptera: Ichneumonoidea) fauna on northwest São Paulo State fragmentary natural environments was conducted using Malaise traps in five sites of Environmental Protected Area of Descalvado, SP, Brazil. A total of 2262 specimens, representing 22 subfamilies and 94 genera, was recovered throughout a period of sixteen months from may 1999 to august 2000. Biological data were obtained from current literature and behavior patterns of host utilization for the studied fauna, in special the Braconidae which have been successful in control of agricultural insect pest. Statistical analyses indicated that the asymptote of current genera richness has been approached using this sampling method. This is the most complete survey available from natural fragmentary areas of the Descalvado Braconidae fauna. Patterns of distribution and richness of the genera of the Braconidae were recovered. Cluster Analysis was adopted taking as attribute the number of Braconidae genera. The flight phenology of these 22 subfamilies of Braconidae was studied and the trap catch for koinobionts peak was in August, 1999 a month before of the idiobionts peak and in June, 2000 both peaks were simultaneous. The phenological peaks of dominant koinobiont taxa (Microgastrinae) were similar to all koinobionts, and the peaks of dominant idiobiont taxa (Doryctinae) were similar to all idiobionts, as well. February, 2000, was the richer month in number of subfamilies (N= 18), corresponding to the same period when the subfamilies wich potencially attack Lepidoptera where collected. The number of females was superior to the number of males and this relation was more accentuated in koinobionts. The peaks of both females and males were similar to dominant koinobiont and idiobiont taxa. Eight new species of the genus Pseudognaptodon Fischer, 1965 (Hymenoptera: Braconidae: Gnamptodontinae) collected in this study were described andillustrated. These information were used to produce the pedagogic material (CD-ROM) which will be distributed in the schools of Descalvado, SP, Brazil, after the training of the teachers.
A comunidade de macrófitas aquáticas em reservatórios do médio e baixo Rio Tietê (SP) e em lagos da bacia do médio Rio Doce (MG)
(Universidade Federal de São Carlos, 2002-02-26)
Tavares, Katia Sendra
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Rocha, Odete
;
https://lattes.cnpq.br/7577441794992601
Macrophytes have a fundamental role in the functioning of aquatic ecosystems due to their high primary productivity, participation in the nutrient cycling, and interactions with many other components of the system. Many species of macrophytes can be bioindicator of the trophic state or succession stage of the system. In the present work the macrophyte communities of twelve lakes in the Middle Rio Doce (MG) and a cascade of six reservoirs (SP) were analysed, comparing systems naturally and artificially fragmented. Four sampling expeditions to the Rio Doce system and three to the Tietê were performed during the 2001 2002 period. The macrophyte species present were recorded, photographed and collected for herborization. The community was analysed in relation to the species richness, dominant species, the frequence of occurrence and the species composition similarity, intra and inter lake and reservoir systems. The relationship between species richness and lake morphometry was also analised. Macrophyte biomass was determined for selected stands, in order to verify the existence of temporal variations. In the lakes of Middle Rio Doce system a total of 53 species were registered, belonging to 25 genera and 23 families. The occurrence of Habenaria fastor Hoene (Orchidaceae) in this system of lakes was recorded for the first time. The highest richness occurred in the lakes Barra and Verde. Species composition varied considerably among lakes and between periods. No statistically significant relationships were found between species richness and variables related to lake morphometry, although a tendency of increase in the species richness as a function of the increase in the area and perimeter of the lakes was observed. In Tietê reservoirs a total of 48 species were found, belonging to 26 genus and 22 families. The species composition in the first three reservoirs (Middle Tietê) differed from that on the last three reservoirs (Low Tietê). The relationship among the species richness and reservoir morphometry was not statistically significant, however there was a tendency of decreasing richness as the reservoir area or perimeter increased. Twenty three species were shared among both systems; 23 exclusively on lakes of Middle Rio Doce and 18 exclusively in on Tietê reservoirs. The families Cyperaceae and Onagraceae were the ones represented by the highest number of species in both systems. Marked differences were found between the studied systems. The macrophyte species richness was higher in the Middle Rio Doce lakes than in the Tietê reservoirs. In the lakes the increase in the area and perimeter were factors directly related to the increase in species richness whereas in the reservoirs this relationship was inverse. Biomass of macrophytes in selected stands varied greatly between periods, however total biomass per areal unity was similar, although the highest values were recorded in Nova Avanhandava and Ibitinga reservoirs. The results of this study have indicated that the lakes of Middle Rio Doce being a naturally fragmented system, ancient and stable, have a higher macrophyte diversity, whereas the Tietê reservoirs, recently and artificially fragmented and also with greater instability have a lower diversity. Also, the species richness in the reservoirs appeared to be not directly related to the area and perimeter, variables which are representative of their most propitious habitats in natural systems.
Poder judiciário paulista: imagem e competição por poder simbólico retratadas na mídia
(Universidade Federal de São Carlos, 2002-02-27)
Castro, Cristina Maria de
;
Bonelli, Maria da Glória
Trabalho e formação na fronteira: o caso da escola da AJOPAM - Juina - MT
(Universidade Federal de São Carlos, 2002-02-27)
Riscarolli, Eliseu
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Silva Junior, João dos Reis
;
https://lattes.cnpq.br/2153949223770275
The life follows on by the frontier independently from the actions of the State, however its presence is merely to guarantee certain basic conditions of the workers who, voluptuaries or stimulated by the official programs of settling, use to go disclosing the forest and affirming, "unconsciously" the condition of the Brazilian State. The Present work has as object to study the actions undertaken by the Organized Association for Mutual Aid - AJOPAM - in the northwest of Mato Grosso according to what refers to the developed organizational and pedagogical process from 1986, more specifically around those that agglutinated the formation and professional qualification of the agricultural workers, configured as the School of Agriculturists Technician that started working in the 1997. Giving more importance for the professional preparation of the workers, installing some new conceptions and relation between the men and the nature, after all when they transform the landscape imagining that the natural resources will be forever abundant. It has passed less than twenty years of the occupation that was stimulated by the State in the region and what we see is the indifference of the public politics, principally related to the environment which makes us to incorporate it in a different pedagogy of the land, not because of the tendencies of the moment, that could be pos modern, but as a possibility for the future generations to have survival conditions. In this way, the fights of the agricultural workers, women or men, are not established in the contradiction of the way of working but on the forms that it is organized there and that they are results of the workers actions and their social movements like the AJOPAM that shows their new perspectives of working, dreaming, utopias, frustrations and desires to see, in a brief future, better conditions of education, culture, health, transport and social providence.
Framework para comércio eletrônico, via internet móvel, mediado por agente de software
(Universidade Federal de São Carlos, 2002-02-28)
Fontes, Diogo Sobral
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Prado, Antonio Francisco do
;
https://lattes.cnpq.br/2668568143800755
The emergent technology of software agents is becoming popular in the last years, due to the increasing of Internet applications. Software Agents were initially used to filter information, find people with similar interests and to automate repetitive processes. Nowadays, they are being used in e-commerce applications, making a revolution in the way of leading the negotiations between people and companies. This technology automates several traditional steps of the purchase and sale process for Internet, reducing the costs and eliminating geographical barriers. This research presents a proposal for the development of an E-Commerce Framework, via Mobile Internet, mediated by Software Agents (FCEMAS). The framework is based on project patterns and Mobile Internet solutions using WAP (Wireless Application Protocol).
Trabalho precário e terceirização: as cooperativas de produção no Nordeste
(Universidade Federal de São Carlos, 2002-02-28)
Alves, Edvaldo Carvalho
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Truzzi, Oswaldo Mário Serra
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https://lattes.cnpq.br/5005536921435787
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https://lattes.cnpq.br/3942210361822168
No abstract
A cooperação da Universidade Federal de São Carlos com a Sociedade
(Universidade Federal de São Carlos, 2002-02-28)
Oliveira, Rodrigo Maia de
;
Torkomian, Ana Lúcia Vitale
The current context of the world economy heading for the globalization of markets leads to new approaches of the discussion on the role of the university as an essential agent to the progress of Science and Technology. The discussions have been pointing to the latent potential in the relationship between universities and industries as responsible, in great part, for the technological development of several knowledge areas on behalf of the society and, recently, the public universities are implementing actions that draw more attention to its social role. The objective of this study is to contribute for a better understanding of the matter involving the relationship between the university and the industry in Brazil, through a research accomplished in the Federal University of São Carlos (UFSCar). The choice of this university is justified by the important role that it has been carrying out in the regional context, consolidating, together with the University of São Paulo campus São Carlos, the local Pole of High Technology. Taking as study object the universe of 700 contracts managed by the Foundation of Institutional Support to the Scientific and Technological Development (FAI-UFSCar), it was possible to trace a prospect of the cooperation of UFSCar with its external partners for the period 1992-2000.
Dinâmica do fitoplâncton e condicionantes limnológicos nas escalas de tempo (nictemeral/sazonal) e de espaço (horizontal/vertical) no açude Traperoá II: trópico semi-árido nordestino
(Universidade Federal de São Carlos, 2002-03-01)
Barbosa, José Etham de Lucena
;
Tundisi, Takako Matsumura
;
https://lattes.cnpq.br/7789295211200946
In the semi-arid North-east region of Brazil occurs the second highest density of dams in the world (or açudes , as they are locally known) which supply water to ca. 40 millions inhabitants, mainly during the dry period, a catastrophic and frequent event in that Brazilian region. The limnological functioning of such water system in the Taperoá II dam (07o11 44 S and 07o13 44 S, 36o52 03 W and 36o50 09 W) was investigated through sampling carried out between September/1998 and September/2000. Sampling was performed at four collecting stations: three of them at the pond margins and one in its pelagic zone, where four depths were selected: surface, 50% and 1% light penetration, and at 4.0m depth. Climatological characteristics of the region (air temperature, evaporation, winds, and rainfall) were analysed, as well as the physical and chemical properties of the water (temperature, dissolved oxygen, pH, electric conductivity, alkalinity, turbidity, transparency, total dissolved inorganic carbon, ammonia, nitrite, nitrate, total phosphorus, orthophosphate, and silicate). Climatic variations due to El Niño event (1997-1998) caused, between September/98 and January/99, a drastic reduction of the available stock of water in the pond, which determined a strong concentration of dissolved salts, an alkaline pH, high electric conductivity and high inorganic nutrient contents. The diluter effect of the increased rainfall in February and March/1999 exerted a reduction of oxygen, conductivity, and dissolved nutrients and caused water acidity. The recovery of the pond hydrometric volume and its stability, maintained the limnological variables almost unchanged up to the next rainy period. A relative thermal stratification occurred between February and April/2000 simultaneously to a chemical stratification. The Principal Components analysis allowed to distinguish the system based on the highest limnological variables here studied and the water volume fluctuation, showing that the interaction of extreme dry season and rainfall in a short period, are the strongest determinants of the high interannual variability of the sampled variables and of the reduced spatial oscillations of the horizontal and vertical axes of the dam.
Relações de gênero e sexualidade no cotidiano escolar: concepções de duas professoras do ensino fundamental.
(Universidade Federal de São Carlos, 2002-03-07)
Nunes, Maria Dolores de Figueiredo
;
Oliveira, Maria Waldenez de
;
https://lattes.cnpq.br/3404769527869004
This work has as starting point the question: How do female teachers of first graders at Elementary Schools perceive the construction of their conceptions and experiences concerning, specifically, their work with sexuality and gender relations that are present in classrooms and other school premises ? Its objectives were to identify through interviews with female teachers: a)the perceptions about the course of their professional formation; b) their perceptions about sexuality and gender relations present in the interpersonal relations in the classroom; c) perceptions of ways in which they themselves deal with questions related to gender and sexuality; d) conceptions that enter their perceptions (or their absence) about sexuality and gender relations of their male and female pupils; e) their personal conceptions of sexuality and gender relations that influence their perceptions and conceptions of sexuality in infancy and gender relations; f) how their conception interferes with the relations that they establish with their male and female pupils and which they let these establish with them. To collect data two female teachers of local State schools in São Carlos, State of São Paulo, Brazil, were interviewed. Analyzing their testimony resulted in three thematic focos, which are: the formation and the pedagogical experience; b) the male and female pupils and the female teacher: perception of gender relations present at school; c) sexuality present at school. The results of the research confirmed that the school provides its pupils with Sexual Education, ruled by sexist stereotypes and by hiding the infantile sexuality, as already disclosed by extensive literary work about this subject.. Analyzing the interviews of the female teachers also demonstrated that they perceive that their conceptions originate , to a large extent, in multiple factors, among others, the home education, which they received during infancy, and which was heavily influenced by Christianism, predominantly Catholicism. The media, represented by television, but mainly by magazines for adolescents, also took part in this construction, giving information nor always available through family or friends. The data also revealed that the teachers training courses only superficially approach the human sexuality question without special attention to the infantile sexuality. Moreover, the interviews disclosed that the school educators visualized very little, and in an intuitive and spontaneous way, the sexuality of their male and female pupils, as well as their manifestations. Finally, these female teachers said to believe in the importance and in the necessity of a formal Sexual Education in the school curriculum with teachers specially prepared for this task.
Densidade estomática e porosidade foliar de vinte espécies lenhosas encontradas no cerrado
(Universidade Federal de São Carlos, 2002-03-11)
Narcizo, Gerson Ricardo
;
Soares, João Juares
;
https://lattes.cnpq.br/6093800182799882
Stomatal density and leaf porosity of twenty woody species of cerrado vegetation. In this work was characterized the size, and density of stomata and leaf porosity of twenty woody species found in a cerrado vegetation located in the forest reserve of the Federal University of São Carlos SP. It was used paradermic cuts of mature leaf without tricomes. These cuts were observed in a microscopic acoplated a personal computer and stomata was counted and sized for the Image Plus program. The Casearia sylvestris presented the highest estomatal density: 602/mm2 in inferior surface and 316 /mm2 in the upper surface, however it presented the lesser average area of the stomatal porosity around 18.7 µm2 and 1.29% of total leaf porosity. The Kyelmeiera coriacea was placed in the other extremity of the stomatal density with 80/mm2 in the inferior surface of leaf and 43/mm2 in the upper surface. This species presented an high average of area pore, around 102 µm2 and total leaf porosity of 1.09%. The total leaf porosity for the studied species are distributed between 0.75 and 2.63% of the leaf surface. The Rapanea umbellata presented the biggest total leaf porosity for the group of twenty analyzed species, being around 2.63%, 230/mm2 for stomatal density and with 114µm2 of total area of pores. In the other extremity the Rapanea lancifolia presented the lesser leaf porosity, around 0.75% , 252/mm2 of stomatal density and 29.7µm of total area of pore. The results were analyzed in function of strategic adaptation of species to the hydric deficiency of cerrado biome.
Análise da sustentabilidade ambiental do uso e ocupação do solo no município de Ilha Comprida-SP
(Universidade Federal de São Carlos, 2002-03-15)
Jesus, Adriana Rita Guarnieri de
;
Salvador, Nemésio Neves Batista
;
https://lattes.cnpq.br/9930582531600560
;
https://lattes.cnpq.br/7965562698152371
The present work consisted in the application of a method for environmental sustainability analysis for land use and soil occupation of Ilha Comprida city, located in the southern state of São Paulo, the estuarine-lagoon complex Iguape-Cananéia- Paranaguá, region of Vale do Ribeira de Iguape. Land use and soil occupation of Ilha Comprida and the concept of sustainability as a theoretical, technical and empirical supporting body were studied. This work used a methodology based on a Method developed by a Study Group from UFSCar (Federal University of São Carlos) called Strategic Planning and Sustainable Urban Environment (PESMU), which incorporates the sustainability issue in the analysis and evaluation of urban context projects. Therefore, the methodology makes use of flow charts, interaction matrices, characterization sheets, used together, directing the analysis of environmental sustainability in the city, pointing favorable, neutral or unfavorable trends to environmental sustainability. Practical applications of the method in different areas of the city were carried out, showing the land use and soil occupation as the action variable (street construction layout, plot, deployment of building plots, urban uses and buildings geometries) and environmental issues as control variables. Comprising an easy applicability methodology, it proved to be feasible, and can be added other possible information and more complex analysis tools to enable the expansion of its applicability.
Turismo e conservação no cenário rural do entorno de uma Unidade de Conservação, no município de Luiz Antonio (SP)
(Universidade Federal de São Carlos, 2002-03-15)
Severino, Fulvio Cesar Garcia
;
Pires, José Salatiel Rodrigues
;
https://lattes.cnpq.br/3412204514901170
The tourism in rural areas has stood out for allowing the conservation of natural areas that comprises the rural matrix and for having conditions to generate revenues and employments to the local population. In the present survey, six farms (located in surroundings of Jataí Ecological Station Luiz Antônio city/SP, Brazil) were visited with the aim to verify by interviews both its tour potential and the owners social representations concerning to land uses. In addition, it was intended to know postures, values and worries about the tour activities from the urban areas people to obtain a wiser view about tourism issue. The activities developed in farms compose the cast of touring possibilities in rural areas. Nevertheless the owners are not ready for tourism in their proprieties. Natural areas of their proprieties have been seen with dislike (negativist representation) due to impossibility of using them as incomes (utilitarian representation). The conservation unit has been seen as a biodiversity protection place (naturalist representation). However natural areas out of Ecological Station have not been comprehended as a place for conservation. Ecological Station was the most tour potential cited by interviewees in urban area. They also realize that the city still has not been ready for tourism due to a lacking infrastructure. Notwithstanding they believe tourism might be a generator of employments and revenues besides a social and economic factor of growth and development. Tourism is supposed to serve for this purpose without basing upon developmental myth referential as well as to be planned with and for population. For its formal implementation, there is the necessity of an incitement policy for tour activities based on environmental, social and economic diagnosis. There is also the necessity of sensitization efforts and environmental education with population. The main point is to train local guides consciousness from environmental, social and cultural queries and capable to spread its tour attributes away. It is important as well to choose a farm, to observe the evolution of tour activities and to monitory its results.
Análise da confiabilidade de equipamentos e métodos para medir o movimento de flexão anterior da coluna lombar
(Universidade Federal de São Carlos, 2002-03-21)
Vieira, Edgar Ramos
;
Coury, Helenice Jane Cote Gil
;
https://lattes.cnpq.br/8631547579695270
Current high incidence of low back pain represents high costs to patients, industries, health insurance companies and government. Moreover, it causes loss in life quality of suffers. Lumbar flexion movement is critical to the development and aggravation of low back pain. Thus, quantification of this movement is important to the prevention and treatment of these disorders. Therefore, the purposes of this research were: design two new methods to quantify lumbar flexion movement, improve electrogoniometer interfaces, and assess the reliability of three devices and methods to measure the studied movement. In order to achieve these objectives, three studies were designed. Study 1 has compared the measurements from an electrogoniometer fixed by Attachment Ducts (ADs), with those from another electrogoniometer without ADs, and the measurements of both electrogoniometers with those from a high precision goniometer. Study 2 has compared both conditions studied previously, when the electrogoniometers were fixed in parallel on lumbar muscles of 14 subjects. Study 3 presented the Perpendicular Markers Photometric Technique (PMPT) and the Distanciometer, both designed for this study. Furthermore, this study analyzed the reliability of the PMPT, fleximeters (usually known as inclinometers), and Distanciometer, when compared to the measurements of lumbar flexion movement of 25 subjects performed by an electrogoniometer. Results indicated that electrogoniometers are precise equipment, ADs did not influence measurements and provided a more specific definition of the region to be assessed by electrogoniometers, and high reliability was found for both PMPT and Distanciometer, but not for the fleximeters used in this study.
Ansatz de Bethe para cadeias quânticas de spin-1 com condições de contorno
(Universidade Federal de São Carlos, 2002-03-21)
Fireman, Elton Casado
;
Florêncio, Odila
;
https://lattes.cnpq.br/9659972316642270
;
https://lattes.cnpq.br/8569068916474005
The procedure for obtaining integrable open spin chain Hamiltonians via reflection matrices explicitly carried out for some three-state vertex models. We have considered the 19-vertex models of Zamolodchikov-Fateev and Izergin-Korepin and the Z2 graded 19-vertex models with sl(2/1) and osp(1/2) invariances. In each case the eigenspectrum is determined by application of the coordinate Bethe ansatz.
Concepções norteadoras da prática pedagógica de professoras da educação infantil e uso pedagógico da culinária: possíveis relações
(Universidade Federal de São Carlos, 2002-03-24)
Silva, Leilany Fernandes Rodrigues Arruda da
;
Lima, Emília Freitas de
;
https://lattes.cnpq.br/1611153541457646
This work, of qualitative kind, searches for understanding the two pre-school teachers' conceptions by analysing their teaching resources regarding cookery activities in classroom. In order to make it possible, the data were got in their own classrooms having children aged six under their responsability and taking place in a public school of S.Carlos' Municipal Educational Net. Since S.Carlos'Municipal Education deals with Teaching Projects, the researcher intervened by developing cookery experiences related to the subjects and objectives of these same projects in order to verify the conceptions assumed by both teachers starting from the teaching utilization the teachers are supposed to do with the different themes. The work presents as initial hypothesis that teachers' own conceptions change into elements that will interfer with teaching experiences and, at same time, they are going to constitute and change themselves in their confront with reality. This kind of movement doesn't occur in a linear and straight way. In order to understand better the actual context where both participant teachers were insered, the researcher tried to understand how works the Teaching Projects studying the Teaching Projects as a teaching proposal and tried also to find out the underlied conceptions supporting them. The data's analyse obtained allowed us to realize that there are in the teaching experiences conceptions that the own teachers have about the teaching process and can belong to differents kinds of models such as authoritary, spontaneous or democratic. (FREIRE, 1977) The different moments lived during the work, the confrontation between the collected data and the theories supporting them, all this could provide us elements for some considerations: -the construction of an effective teaching experience, able to offer students significant , cheerful and vibrant learnings compromised with the respect of the students considered as historical and social beings. This process can not be acquired neither by the only adotion of techniques nor the only utilization of democratic and socializant methodologies; -the conceptual changes are to be derived from a substantial education able to shake hard stablished models, able to reveal the unconscious conceptions. This education won't be certainly obtained in a no-systematic way; -the school comes to be the place where one can potentially interfere in teachers' models, if this is desirable, and in this way able to promove the exercise of reflexion and theorization about the necessary experiences to aim this aim.
Relações hídricas e fotossíntese em espécies lenhosas de um cerrado stricto sensu em São Carlos, SP
(Universidade Federal de São Carlos, 2002-03-25)
Rojas, Manuel Humberto Cardoza
;
Prado, Carlos Henrique Britto de Assis
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https://lattes.cnpq.br/7561749470600567
Values of pre dawn, initial, and morning (between 10:00-11:30 h) leaf water potential (Ψaa, Ψi, and Ψ, respectively), and morning leaf gas exchange were obtained during wet and dry seasons in woody species of cerrado stricto sensu vegetation located at Southeast of Brazil, in São Carlos municipality (21°58'S-47°52'W, 850 m a.s.l.). At first eight species were studied measuring the leaf water potential during daily courses in dry and wet seasons. Two daily courses were carried out per season. In wet season the meteorological conditions were similar between the daily courses, when the maximum air temperature, vapor pressure deficit (VPD) and the total hours of direct solar radiation values were equivalent. Notwithstanding, the studied species showed different mean values of minimum (Ψmin) and integrated (IΨ) leaf water potential between the daily courses. In dry season the values of maximum temperature, VPD and the total hours of direct solar radiation values were much more different between the daily courses but there were not significant differences between Ψmin and IΨ mean values. The conditions at dry season (specially a moderate water stress at the rizosphere) could induce one distinct reaction since the early morning, promoting stomatal closing and avoiding great alterations in leaf water status. In chapter 1 were compared the average values of Ψmin among cerrado stricto sensu vegetation, Northern Australian savanna and Mediterranean Climate Vegetation. Because the rainfall is greater and more constant during the year in cerrado, and by reason of their woody species are able to cope the leaf water status during dry season, the values of Ψmin in cerrado were lower than Australian savanna (Mediterranean vegetation showed the lowest Ψmin). The results in chapter 2 confirmed the initial explanations in chapter 1 about the differences in Ψmin and IΨ in wet and dry seasons. In chapter 2 there are presented results of leaf gas exchange in 23 woody species: net photosynthesis (A), stomatal conductance (gs), transpiration (E), and sub stomatal CO2 concentration (Ci). All species studied (including those in chapter 1) showed reduced values of gs in dry season (78% on average basis) confirming that during the winter drought occurs sharp reduction of gs. This reduction was able to decrease the E values (-33%) due to the stomatal narrowing (lower values of gs under high values of VPD). It was probably responsible to increase the resistance for CO2 incoming to sub stomatal chamber, lowering the CO2 concentration available to photosynthesis. It could explain, at least in part, the lower mean A values under drought condition. Because A and E values decreased proportionally (around 32%), the water use efficiency mean values were kept equivalent during dry and wet seasons. In chapter 2 is proposed a diagram where are pointed out the principal causal events and the probable physiological responses for cerrado woody species under dry season.