A RESPONSABILIDADE SOCIAL EMPRESARIAL COMO FERRAMENTA ESTRATÉGICA E MOTIVACIONAL NA INDÚSTRIA AUTOMOTIVA BRASILEIRA. ESTUDO COMPARATIVO DE CASO: VOLKSWAGEN DO BRASIL (GRANDE ABC) X FIAT AUTOMÓVEIS (BETIM/MG)

Este trabalho propõe-se a mostrar a Responsabilidade Social como uma vantagem competitiva, bem como uma ferramenta estratégica vital para a sobrevivência das empresas em um cenário de rápidas e constantes mudanças. A ressaltar que, a partir do processo de globalização, com a pseudofusão das culturas, muitas empresas viram-se, de uma hora para outra, inseridas em um ambiente extremamente competitivo e aguerrido, onde velhas práticas tiveram que ser abandonadas, porque o cliente, antes jogado à própria sorte, tornou-se rei . Isto é, soberano nas suas escolhas e a razão de ser de uma empresa. Para abalizar as informações prestadas, far-se-á o estudo comparativo de caso, por meio de uma pesquisa qualitativa descritiva, entre a Volkswagen Brasil empresa de origem alemã, instalada há mais de 50 anos no país e que detinha a liderança absoluta do mercado até o início do século XXI mas que a perdeu para a Fiat Automóveis de origem italiana, instalada há pouco mais de 30 anos, na cidade mineira de Betim e que conseguiu reverter uma imagem negativa perante os consumidores, tendo como uma das suas ações, a Responsabilidade Social como ferramenta estratégica e motivacional do seu público interno, numa clara cultura social . Enquanto que, recentemente, a Volkswagen enfrentou um longo e desgastante processo de negociação sindical em face do processo de demissão de milhares de empregados por carta da sua unidade de São Bernardo do Campo, o que pôs em xeque as suas práticas e a sua efetiva preocupação com o social. A Pesquisa IPEA de Indicadores Sociais, na sua segunda edição, é elemento norteador do trabalho desenvolvido que traz como principais revelações: a Responsabilidade Social no Brasil ainda é incipiente, está em processo de gestação a ISO 26001, a preocupação ambiental alastra-se por todo o planeta e os gestores, antes atentos quase que exclusivamente ao lucro, passam a ser cobrados pelos possíveis impactos socioambientais de suas decisões no presente.(AU)

RÁDIO, TECNOLOGIA E SOCIEDADE: O desenvolvimento da Radiodifusão Digital no Brasil

O trabalho trata da tecnologia de radiodifusão em processo de digitalização. Estabelece os elementos históricos fundamentais que contribuíram para a consolidação de uma indústria da comunicação, características demonstradas nos debates e argumentações em torno da digitalização do setor. Através da descrição das tecnologias digitais a serem empregadas na transição foi possível identificar os potenciais tecnológicos que são formatados socialmente nos atos pela padronização técnica, expondo as limitações e o teor conservador que uma nova tecnologia pode representar.(AU)

DOS MUROS DA ESCOLA À ABERTURA PARA A CIDADE

A prática educativa na escola está carregada de uma postura tradicional e bancária , conforme aparece em várias obras de Freire, ainda que novas tecnologias sejam introduzidas em seu cotidiano pedagógico. A ênfase à informação em detrimento da construção do conhecimento e saberes, na verdade, afasta o aluno, particularmente nas escolas públicas, de apropriar-se dos instrumentos significativos de sua elaboração. Nesse sentido, dentro da linha de Políticas e Gestões Educacionais, esse trabalho se propõe à reflexão do espaço da escola no diálogo com a cidade, isto é, à possibilidade de protagonismo social no desenvolvimento do aluno. O procedimento da pesquisa fundamenta-se no estudo dos projetos de educação ambiental desenvolvidos na rede municipal de Mauá através dos registros e relatos descritivos das avaliações das escolas dessas atividades, de seus Projetos Políticos Pedagógicos e do Programa de Educação Ambiental de Mauá da Secretaria Municipal de Educação. O trabalho Dos muros da escola à abertura para a cidade foi desenvolvido de forma a entendermos o espaço geográfico, considerando sua territorialização e o conceito de espaço simbólico. Dessa forma, podemos compreender como a relação escola/espaço território e o Programa de Educação Ambiental desenvolvido em escolas da rede pública da cidade de Mauá aparece na atuação de um em relação ao outro. A metodologia de trabalho usada foi exploratória, de natureza bibliográfica e documental. A pesquisa buscou perceber a abordagem dialógica que se estabelece com a cidade a partir da conceituação do espaço simbólico da escola no processo ensino-aprendizagem. O Programa de Educação Ambiental e as escolas, de acordo com seus Projetos Políticos Pedagógicos se propõem, ainda que empiricamente, a trabalhar nessa direção. A prática pedagógica, como demonstraram algumas atividades, mesmo tratando do tema de forma sem a consciência diferenciada , aponta um avanço nesse sentido. Os textos coletivos, a participação solidária, são elementos que nos permitem concluir dessa forma. As respostas das crianças foram significativas, embora tenhamos apontado as dificuldades na execução dos procedimentos pedagógicos. Por tratar-se de algo novo, não só como proposta, o Programa de Educação Ambiental exigiu a capacidade de lidar com ações integrada e integradora, ou seja, mudança de subjetividade dos distintos atores envolvidos no processo. O tema poderia se tornar por demais abrangente e, dessa forma, perder-se em generalidades. Assim, alguns aspectos relevantes foram apontados sem, no entanto, partir para um maior aprofundamento a fim de garantir a objetividade do trabalho. A instituição escolar está presente de corpo e alma na cidade e, ainda que, a temática ambiental esteja presente em seu cotidiano ela se faz de maneira formal e informativa. Todos falam em meio ambiente, entretanto poucos internalizam os valores de um ambiente saudável e próprio para o desenvolvimento humano da maioria que produz a riqueza das nações. Consideradas as observações apontadas, o trabalho apresentou elementos que devem ser analisados com maior propriedade, isto é, com maior extensão, como proposta de continuidade da pesquisa.

AVALIAÇÃO DA ANSIEDADE E DO ENFRENTAMENTO DE EXECUTIVOS EM SITUAÇÃO DE DESEMPREGO

O presente estudo teve por objetivos, investigar a presença de ansiedade em executivos após a quebra de vínculo empregatício; identificar as principais estratégias de enfrentamento utilizadas por esses sujeitos; e relacionar a influência do nível de ansiedade no enfrentamento da situação de desemprego. Participaram 35 sujeitos, de 35 a 56 anos, sendo 27 homens e oito mulheres, desempregados há mais de um (1) mês e em processo de recolocação em uma consultoria em São Paulo. Utilizou-se o Inventário de Ansiedade Traço-Estado e a Escala de Modos de Enfrentamento de Problemas EMEP. Os dados foram submetidos ao Statistical Package for the Social Science (SPSS), versão 13.0 para Windows. Os resultados indicaram que o grau de ansiedade encontrava-se dentro da média esperada e houve correlação positiva significativa entre Ansiedade-Traço e Estado o que é esperado, pois quanto maior o traço ansioso maior será o estado, para essa população. Quanto ao enfrentamento e grau de ansiedade, houve correlação negativa entre ansiedadeestado e o uso de estratégias de enfrentamento focalizadas no problema, ou seja, quanto mais ansiedade, menos os sujeitos orientam-se para resolver problemas; sendo o contrário verdadeiro, pois existiu correlação positiva entre ansiedade-estado e estratégias focalizadas nas emoções desagradáveis, indicando que quanto maior o estado ansioso mais os sujeitos se utilizam estratégias que inibem ações habilidosas e adaptativas. Enfrentamentos baseados em práticas religiosas e pensamentos fantasiosos também estiveram correlacionados com estratégias focalizadas na emoção (sentimentos negativos) podendo sugerir caráter adaptativo menos eficaz. As correlações entre as estratégias de enfrentamento baseadas na emoção e idade mostraram-se negativas, principalmente para sujeitos mais velhos. Não foi encontrada correlação entre desemprego e ansiedade, porém quanto maior tempo de desemprego, menor a utilização de práticas religiosas ou pensamento fantasioso. A análise de confiabilidade do instrumento para esse estudo, através do Alpha de Cronbach foi 0,79; a análise de variância (Anova) entre os fatores de enfrentamento e sexo indicou uma diferença significativa para os fatores de enfrentamento focalizados na emoção e religiosidade/ pensamento fantasioso (p < 0,05). Concluiu-se que a variável ansiedade é presente quando relacionada ao enfrentamento focalizado na emoção e busca de práticas religiosas ou pensamento fantasioso entre sujeitos em situação de desemprego; fato que sugere dificuldades de equilíbrio adaptativo. Sugerem-se outros estudos com amostras maiores e que possam verificar com mais precisão a relação entre tempo de desemprego, sexo, faixa etária e dados do agrupamento familiar entre desempregados de cargos de gerência ou altos executivos

Simulation modelling for business

Simulation modelling has been used for many years in the manufacturing sector but has now become a mainstream tool in business situations. This is partly because of the popularity of business process re-engineering (BPR) and other process based improvement methods that use simulation to help analyse changes in process design. This textbook includes case studies in both manufacturing and service situations to demonstrate the usefulness of the approach. A further reason for the increasing popularity of the technique is the development of business orientated and user-friendly Windows-based software. This text provides a guide to the use of ARENA, SIMUL8 and WITNESS simulation software systems that are widely used in industry and available to students. Overall this text provides a practical guide to building and implementing the results from a simulation model. All the steps in a typical simulation study are covered including data collection, input data modelling and experimentation.

Resistance heating of steel conductors of circular cross-section

The object of this thesis is to develop a method for calculating the losses developed in steel conductors of circular cross-section and at temperatures below 100oC, by the direct passage of a sinusoidally alternating current. Three cases are considered. 1. Isolated solid or tubular conductor. 2. Concentric arrangement of tube and solid return conductor. 3. Concentric arrangement of two tubes. These cases find applications in process temperature maintenance of pipelines, resistance heating of bars and design of bus-bars. The problems associated with the non-linearity of steel are examined. Resistance heating of bars and methods of surface heating of pipelines are briefly described. Magnetic-linear solutions based on Maxwell's equations are critically examined and conditions under which various formulae apply investigated. The conditions under which a tube is electrically equivalent to a solid conductor and to a semi-infinite plate are derived. Existing solutions for the calculation of losses in isolated steel conductors of circular cross-section are reviewed, evaluated and compared. Two methods of solution are developed for the three cases considered. The first is based on the magnetic-linear solutions and offers an alternative to the available methods which are not universal. The second solution extends the existing B/H step-function approximation method to small diameter conductors and to tubes in isolation or in a concentric arrangement. A comprehensive experimental investigation is presented for cases 1 and 2 above which confirms the validity of the proposed methods of solution. These are further supported by experimental results reported in the literature. Good agreement is obtained between measured and calculated loss values for surface field strengths beyond the linear part of the d.c. magnetisation characteristic. It is also shown that there is a difference in the electrical behaviour of a small diameter conductor or thin tube under resistance or induction heating conditions.

Brush plating of bearing alloys on aluminium alloy shells

The turbocharging of diesel engines has led to increase in temperature, load and corrosive attack of plain bearings. To meet these requirements, overlay plated aluminium alloys are now preferred. Currently, lead-tin alloys are deposited using a zincate layer and nickel strike, as intermediate stages in the process. The nickel has undesirable seizure characteristics and the zincate can given rise to corrosion problems. Consequently, brush plating allows the possible elimination of these stages and a decrease in process together with greater automation. The effect of mode application, on the formation of zincate films, using film growth weight measurements, potential-time studies, peel adhesion testing and Scanning Electron Microscopy was studied, for both SIC and AS15 aluminium alloys. The direct plating of aluminium was also successfully achieved. The results obtained indicate that generally, although lower adhesion resulted when a brush technique was used, satisfactory adhesion for fatigue testing was achieved. Both lead-tin and tin-cobalt overlays were examined and a study of the parameters governing brush plating were carried out using various electrolytes. An experimentally developed small scale rig, was used to produce overlay plated bearings that were fatigue tested until failure. The bearings were then examined and an analysis of the failure mechanisms undertaken. The results indicated that both alloy systems are of the regular codeposition type. Tin-cobalt overlays were superior to conventional lead-tin overlays and remained in good condition, although the lining (substrate) failed. Brush plated lead-tin was unsatisfactory. Sufficient understanding has now been gained, to enable a larger scale automated plant to be produced. This will allow a further study of the technique to be carried out, on equipment that more closely resembles that of a full scale production process.

Computer simulation of moist agglomerate collisions

This thesis considers the computer simulation of moist agglomerate collisions using the discrete element method (DEM). The study is confined to pendular state moist agglomerates, at which liquid is presented as either absorbed immobile films or pendular liquid bridges and the interparticle force is modelled as the adhesive contact force and interstitial liquid bridge force. Algorithms used to model the contact force due to surface adhesion, tangential friction and particle deformation have been derived by other researchers and are briefly described in the thesis. A theoretical study of the pendular liquid bridge force between spherical particles has been made and the algorithms for the modelling of the pendular liquid bridge force between spherical particles have been developed and incorporated into the Aston version of the DEM program TRUBAL. It has been found that, for static liquid bridges, the more explicit criterion for specifying the stable solution and critical separation is provided by the total free energy. The critical separation is given by the cube root of liquid bridge volume to a good approximation and the 'gorge method' of evaluation based on the toroidal approximation leads to errors in the calculated force of less than 10%. Three dimensional computer simulations of an agglomerate impacting orthogonally with a wall are reported. The results demonstrate the effectiveness of adding viscous binder to prevent attrition, a common practice in process engineering. Results of simulated agglomerate-agglomerate collisions show that, for colinear agglomerate impacts, there is an optimum velocity which results in a near spherical shape of the coalesced agglomerate and, hence, minimises attrition due to subsequent collisions. The relationship between the optimum impact velocity and the liquid viscosity and surface tension is illustrated. The effect of varying the angle of impact on the coalescence/attrition behaviour is also reported. (DX 187, 340).

The study of ultra-low energy deposition of hydrogenated amorphous carbon thin films

This thesis is dedicated to the production and analysis of thin hydrogenated amorphous carbon films. A cascaded arc plasma source was used to produce a high density plasma of hydrocarbon radicals that deposited on a substrate at ultra low energies. The work was intended to create a better understanding of the mechanisms responsible for the film formation, by an extensive analysis on the properties of the films in correlation with the conditions used in the plasma cell. Two different precursors were used: methane and acetylene. They revealed a very different picture for the mechanism of film formation and properties. Methane was less successful, and the films formed were soft, with poor adhesion to the substrate and decomposing with time. Acetylene was the better option, and the films formed in this case were harder, with better adhesion to the substrate and stable over time. The plasma parameters could be varied to change the character of films, from polymer-like to diamond-like carbon. Films deposited from methane were grown at low deposition rates, which increased with the increase in process pressure and source power and decreased with the increase in substrate temperature and in hydrogen fraction in the carrier gas. The films had similar hydrogen content, sp3 fractions, average roughness (Ra) and low hardness. Above a deposition temperature of 350°C graphitization occurred - an increase in the sp2 fraction. A deposition mechanism was proposed, based upon the reaction product of the dissociative recombination of CH4+. There were small differences between the chemistries in the plasma at low and high precursor flow rates and low and high substrate temperatures; all experimental conditions led to formation of films that were either polymer-like, soft amorphous hydrogenated carbon or graphitic-like in structure. Films deposited from acetylene were grown at much higher deposition rates on different substrates (silicon, glass and plastics). The film quality increased noticeably with the increase of relative acetylene to argon flow rate, up to a certain value, where saturation occurred. With the increase in substrate temperature and the lowering of the acetylene injection ring position further improvements in film quality were achieved. The deposition process was scaled up to large area (5 x 5 cm) substrates in the later stages of the project. A deposition mechanism was proposed, based upon the reaction products of the dissociative recombination of C2H2 +. There were large differences between the chemistry in the plasma at low and medium/high precursor flow rates. This corresponded to large differences in film properties from low to medium flow rates, when films changed their character from polymer-like to diamond-like, whereas the differences between films deposited at medium and high precursor flow rates were small. Modelling of the film growth on silicon substrates was initiated and it explained the formation of sp2 and sp3 bonds at these very low energies. However, further improvements to the model are needed.

Automatically Extracting Procedural Knowledge from Instructional Texts using Natural Language Processing

Procedural knowledge is the knowledge required to perform certain tasks, and forms an important part of expertise. A major source of procedural knowledge is natural language instructions. While these readable instructions have been useful learning resources for human, they are not interpretable by machines. Automatically acquiring procedural knowledge in machine interpretable formats from instructions has become an increasingly popular research topic due to their potential applications in process automation. However, it has been insufficiently addressed. This paper presents an approach and an implemented system to assist users to automatically acquire procedural knowledge in structured forms from instructions. We introduce a generic semantic representation of procedures for analysing instructions, using which natural language techniques are applied to automatically extract structured procedures from instructions. The method is evaluated in three domains to justify the generality of the proposed semantic representation as well as the effectiveness of the implemented automatic system.

High-throughput manufacturing of size-tuned liposomes by a new microfluidics method using enhanced statistical tools for characterization

Microfluidics has recently emerged as a new method of manufacturing liposomes, which allows for reproducible mixing in miliseconds on the nanoliter scale. Here we investigate microfluidics-based manufacturing of liposomes. The aim of these studies was to assess the parameters in a microfluidic process by varying the total flow rate (TFR) and the flow rate ratio (FRR) of the solvent and aqueous phases. Design of experiment and multivariate data analysis were used for increased process understanding and development of predictive and correlative models. High FRR lead to the bottom-up synthesis of liposomes, with a strong correlation with vesicle size, demonstrating the ability to in-process control liposomes size; the resulting liposome size correlated with the FRR in the microfluidics process, with liposomes of 50 nm being reproducibly manufactured. Furthermore, we demonstrate the potential of a high throughput manufacturing of liposomes using microfluidics with a four-fold increase in the volumetric flow rate, maintaining liposome characteristics. The efficacy of these liposomes was demonstrated in transfection studies and was modelled using predictive modeling. Mathematical modelling identified FRR as the key variable in the microfluidic process, with the highest impact on liposome size, polydispersity and transfection efficiency. This study demonstrates microfluidics as a robust and high-throughput method for the scalable and highly reproducible manufacture of size-controlled liposomes. Furthermore, the application of statistically based process control increases understanding and allows for the generation of a design-space for controlled particle characteristics.

The Computer System for the Estimation of the Realizability of the Crew Activity Algorithms

When designing specification on-board algorithm (the algorithm, realized on on-board digital computing machine, and algorithm to activity of the crew necessary to conduct the estimation their realizing. Presented computer system allows in interactive mode with user to value the temporary expenseses of the operator on processes decision making and their realizing, participations it in process of the spying.

Codon-precise, synthetic, antibody fragment libraries built using automated hexamer codon additions and validated through next generation sequencing

We have previously described ProxiMAX, a technology that enables the fabrication of precise, combinatorial gene libraries via codon-by-codon saturation mutagenesis. ProxiMAX was originally performed using manual, enzymatic transfer of codons via blunt-end ligation. Here we present Colibra™: an automated, proprietary version of ProxiMAX used specifically for antibody library generation, in which double-codon hexamers are transferred during the saturation cycling process. The reduction in process complexity, resulting library quality and an unprecedented saturation of up to 24 contiguous codons are described. Utility of the method is demonstrated via fabrication of complementarity determining regions (CDR) in antibody fragment libraries and next generation sequencing (NGS) analysis of their quality and diversity.

Operation sequencing optimization for five-axis prismatic parts using a particle swarm optimization approach

Operation sequencing is one of the crucial tasks in process planning. However, it is an intractable process to identify an optimized operation sequence with minimal machining cost in a vast search space constrained by manufacturing conditions. Also, the information represented by current process plan models for three-axis machining is not sufficient for five-axis machining owing to the two extra degrees of freedom and the difficulty of set-up planning. In this paper, a representation of process plans for five-axis machining is proposed, and the complicated operation sequencing process is modelled as a combinatorial optimization problem. A modern evolutionary algorithm, i.e. the particle swarm optimization (PSO) algorithm, has been employed and modified to solve it effectively. Initial process plan solutions are formed and encoded into particles of the PSO algorithm. The particles 'fly' intelligently in the search space to achieve the best sequence according to the optimization strategies of the PSO algorithm. Meanwhile, to explore the search space comprehensively and to avoid being trapped into local optima, several new operators have been developed to improve the particle movements to form a modified PSO algorithm. A case study used to verify the performance of the modified PSO algorithm shows that the developed PSO can generate satisfactory results in optimizing the process planning problem. © IMechE 2009.