998 resultados para Controle estatístico do processo (CEP)


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O objetivo desse estudo foi evidenciar o uso das ferramentas de controle gerencial que auxiliam no processo de tomada de decisão nas Micros, Pequenas e Médias Empresas, no município de SCSul. Entende-se, que na atualidade esses instrumentos devem ser alinhados com a realidade dessas organizações e as informações extraídas por estas devem ser a base para a tomada de decisão que perpetuem a riqueza dos investidores. O procedimento metodológico aplicado na escolha das empresas pesquisadas foi o critério de conveniência, utilizando o método de raciocínio dedutivo, através de aplicação de um questionário em 296 empresas, pelo a qual 18,6% destas se depuseram a responder o questionário. As empresas foram classificadas de acordo com o faturamento bruto anual estabelecido pela Receita Federal. Após a análise dos resultados, foi possível detectar que cerca de 41% dessas organizações estão a mais de 20 anos no mercado, o que demonstra uma boa consolidação no mercado. Detecta-se, também, que estes empresários-gerentes possuem uma forte formação superior: 31,27% pós-graduados e 22,22% graduados, o que pode ser um diferencial na gestão desses negócios. Como o pressuposto dessa pesquisa foi de analisar: se as MPME s industriais no município de SCSul estão utilizando as ferramentas de controle gerencial em seu processo de gestão para tomada de decisão, diante das análises efetuadas, tanto pelo o estudo de campo com bibliográfica, conclui-se que a tomada de decisão nessas empresas está baseada nas ferramentas de controle e que estas possuem um bom controle dos seus negócios contrariando o que se esperava.

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Esta tese trata da comunicação como instrumento de inteligência empresarial numa instituição de ensino superior. Ela pretende demonstrar que a comunicação agrega vantagem competitiva às organizações que atuam no mercado educacional. O presente trabalho se fundamenta em referenciais teóricos das ciências da Comunicação e de Planejamento Estratégico, e seus procedimentos metodológicos incluem, além de revisão bibliográfica extensiva e análise de documentos, a técnica da observação participante, com o acompanhamento das atividades do grupo de trabalho intitulado Comunicação e Integração entre os anos 2003 e 2005, que integrava o Planejamento Estratégico da UMESP Universidade Metodista de São Paulo. Ao final do trabalho, buscou-se mapear as condições necessárias para que a comunicação se constitua efetivamente num processo de inteligência empresarial, incorporando-se à gestão estratégica das organizações. Admitimos que a Comunicação Empresarial ainda tem de vencer alguns desafios e que eles, necessariamente, não são fáceis de serem superados. É necessário considerar sempre que a Comunicação Empresarial não flui no vazio, não se realiza à margem das organizações, mas está umbilicalmente associada a um particular sistema de gestão, a uma específica cultura organizacional e que é expressão, portanto, de uma realidade concreta. Para que a Comunicação Empresarial seja assumida como estratégica, essa condição deverá ser favorecida pela gestão, pela cultura e mesmo pela alocação adequada de recursos (humanos, tecnológicos e financeiros), pois sem os quais ela não se realiza. Logo, se estes pressupostos não estiverem devidamente satisfeitos, será prematuro concluir pelo caráter estratégico da Comunicação Empresarial. Mais ainda: a comunicação não será estratégica em função unicamente do trabalho mais ou menos competente dos profissionais de comunicação. Há exigências outras que, infelizmente, fogem ao seu controle. Em resumo, nesse trabalho são analisadas três questões centrais. A primeira delas diz respeito ao conceito de estratégia. A segunda refere-se ao chamado ethos organizacional em que se insere a prática comunicacional. Finalmente, são examinadas as condições básicas para que a comunicação estratégica realmente prevaleça.

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A disputa pela preferência do consumidor no cenário global gerou um quadro de crescente concorrência. O ponto-de-venda passou a destacar-se como meio de comunicação de marca após a profissionalização do varejo brasileiro, iniciada na década de 1980. Com isso, o ponto-de-venda passou a exigir pesquisas sobre produtos, sobre comportamento do consumidor e ferramentas promocionais específicas. O objetivo deste trabalho é testar a participação de materiais de merchandising no processo de compra do consumidor em supermercados. Para o desenvolvimento da pesquisa, foi escolhido o método quantitativo por meio da técnica experimental em ambiente natural, ou seja, em supermercados selecionados como Grupo Experimental e Grupo de Controle. O Grupo Experimental recebeu materiais de merchandising durante uma semana e as vendas foram comparadas com o Grupo de Controle. Na comparação entre grupos, foi registrado aumento de vendas de 27,86% no supermercado experimental em relação ao supermercado controle. Na comparação com a semana anterior ao experimento, ocorreu queda de 12,62% nas vendas do supermercado experimental. A queda no poder de compra do consumidor no período é uma das possíveis explicações para esse resultado.(AU)

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This study aimed mainly to evaluate the influence of xanthan gum (XG) and carboxymethylcellulose (CMC) in the filtration process of water-based drilling fluids, considering the conformational changes suffered by the polyelectrolyte with the addition of sodium chloride (NaCl) in different concentrations (0.17, 0.34 and 0.51 mol.L-1). It was also evaluated the behavior of the fluid by the addition of calcium carbonate (CaCO3) in pure water and in brine. Seeking a better understanding of the interaction between the polymers used and CaCO3, polymer adsorption analyzes were performed using a depletion method, which yielded a higher percentage of adsorption of Xanthan Gum in this material (29%), which can justify the formation of a thin and waterproof filter cake for drilling fluids containing this polymer. However, the best values of apparent viscosity (20 and 24 mPa.s) and volume of filtrate (8.0 and 8.1 mL) were obtained for the systems consisting of xanthan gum, CMC and CaCO3, in NaCl aqueous solutions concentrations of 0.34 and 0.51 mol.L-1, respectively. The values can be related to the presence of CMC that increases the apparent viscosity and reduces the volume of filtrate. In addition, the CaCO3 added acts as a bridging agent, promoting the formation of a less permeable filter cake

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Despite being areas of socioeconomic and ecological importance, the reef environments in northeastern Brazil have been suffering with cluttered tourism impacts, such as trampling, activity that leads to decrease in abundance of organisms, especially benthic, and loss of biodiversity. The objectives of this study were 1) to characterize the benthic community in the shallow sandstone reef of Pirangi/RN, identifying patterns of zonation, and 2) evaluate its process of structuring under different degrees of impact of trampling, providing information to the proper use of the area. Data on abundance of organisms, the percentage coverage of the substrate and physic-chemical parameters were collected. The formation of two zones on the reef was observed: one that considers submerged areas and ones with shorter time of exposure, lower roughness and higher heterogeneity in the coverage of the substrate, with a predominance of sand, foliose algae, rodolit, being related to organisms such as gastropods, crabs and sea-urchin; the second zone comprises areas with longer time of exposure, greater roughness and predominance of bedrock uncovered, being associated with organisms such as barnacles, gastropods, bivalves and crabs. It is concluded that the studied reef presents its own zonation pattern, influenced by both the time of immersion and the substrate characteristics, such as roughness and type of coverage. To answer the second objective of this study, four experimental blocks were mounted on each of the three areas of different intensities of trampling, containing the following treatments: control (isolated from trampling), shaved isolated, trampling and shaved trampling, with data collection by 11 months. The data in abundance, diversity indices and living coverage of the substrate were compared between areas and treatments. The results showed that at the trampling areas, at the end of the experiment, differences were observed between the intensities of the impact, where higher values of abundance and richness of mobile fauna and richness of live coverage (ANOVA, p <0.05) were found in the area of higher trampling intensity. For fauna withdrawal of trampled scraped treatments, it was observed in the area of greatest impact that the abundance of small benthic invertebrates is more than three times smaller than that at the area of intermediate trampling (ANOVA, p <0.05). Initial isolated areas and final ones differed only as to the percentage of live coverage, with an increase of 35% at the end of this experiment. As for the areas that were completely scraped and isolated at the end of the experiment was observed an increase in the percentage of live coverage of 11.11% compared to the initial amount in the area of intermediate impact and 37.5% in the area with greater impact, indicating recovery of the area. It is suggested that the current use of the reef of Pirangi be reviewed, with a decentralization of trampling, or a decrease in visits, so that it does not occur at high intensities

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A major and growing problems faced by modern society is the high production of waste and related effects they produce, such as environmental degradation and pollution of various ecosystems, with direct effects on quality of life. The thermal treatment technologies have been widely used in the treatment of these wastes and thermal plasma is gaining importance in processing blanketing. This work is focused on developing an optimized system of supervision and control applied to a processing plant and petrochemical waste effluents using thermal plasma. The system is basically composed of a inductive plasma torch reactors washing system / exhaust gases and RF power used to generate plasma. The process of supervision and control of the plant is of paramount importance in the development of the ultimate goal. For this reason, various subsidies were created in the search for greater efficiency in the process, generating events, graphics / distribution and storage of data for each subsystem of the plant, process execution, control and 3D visualization of each subsystem of the plant between others. A communication platform between the virtual 3D plant architecture and a real control structure (hardware) was created. The goal is to use the concepts of mixed reality and develop strategies for different types of controls that allow manipulating 3D plant without restrictions and schedules, optimize the actual process. Studies have shown that one of the best ways to implement the control of generation inductively coupled plasma techniques is to use intelligent control, both for their efficiency in the results is low for its implementation, without requiring a specific model. The control strategy using Fuzzy Logic (Fuzzy-PI) was developed and implemented, and the results showed satisfactory condition on response time and viability

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The period known as the Military Dictatorship (1964-1985) was a period of history marked by Brazil's control of state power by the Armed Forces together, this started with the Civil-Military Coup of April 1964. Was characterized as a time where political freedoms of expression and were placed in check by authoritarian and repressive measures taken by the military governments. The sectional potiguar of the Ordem dos Advogados do Brasil (OAB / RN), and the Federal Council of the institution, supported the establishment of this scam, but from the 1970s undertook measures that sought to corroborate the struggles around democracy the country, which has consolidated its image as a defender of democratic order. With the title inspired by the XII Meeting of OAB in October 1988, the research aims to analyze the participation of OAB / RN and its members within the Brazilian democratization. This analysis begins in 1979 with the participation of the entity in discussions Amnesty Policy to the promulgation of the 1988 Constitution, since the Constitution is the beginning of a full rule of law. We seek to understand the object as a space for democratization, combining the concepts of History, Memory and Politics. In the analyzes are guided theoretically by Jacques Le Goff, Pierre Nora, Maurice Halbwachs, Pierre Bourdieu and Hannah Arendt. Be rebuilt the period of democratic rule in the land potiguares birthing shares of OAB / RN, particularly in the following events: Amnesty Policy 1979, the mobilizations around the campaign of "Direct Now" and the 1988 Constitution We make use of legislation. minutes, papers and interviews built on Oral History.

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Actually, Brazil is one of the larger fruit producer worldwide, with most of its production being consumed in nature way or either as juice or pulp. It is important to highlig ht in the fruit productive chain there are a lot lose due mainly to climate reasons, as well as storage, transportation, season, market, etc. It is known that in the pulp and fruit processing industy a yield of 50% (in mass) is usually obtained, with the other part discarded as waste. However, since most this waste has a high nutrient content it can be used to generate added - value products. In this case, drying plays an important role as an alternative process in order to improve these wastes generated by the fruit industry. However, despite the advantage of using this technique in order to improve such wastes, issues as a higher power demand as well as the thermal efficiency limitation should be addressed. Therefore, the control of the main variables in t his drying process is quite important in order to obtain operational conditions to produce a final product with the target specification as well as with a lower power cost. M athematical models can be applied to this process as a tool in order to optimize t he best conditions. The main aim of this work was to evaluate the drying behaviour of a guava industrial pulp waste using a batch system with a convective - tray dryer both experimentally and using mathematical modeling. In the experimental study , the dryin g carried out using a group of trays as well as the power consume were assayed as response to the effects of operational conditions (temperature, drying air flow rate and solid mass). Obtained results allowed observing the most significant variables in the process. On the other hand, the phenomenological mathematical model was validated and allowed to follow the moisture profile as well as the temperature in the solid and gas phases in every tray. Simulation results showed the most favorable procedure to o btain the minimum processing time as well as the lower power demand.

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Introduction: The circadian system has neural projections for the Autonomic Nervous System (ANS), directly interfering with sympathetic-vagal modulation of the cardiovascular system. Disturbances in the circadian system, such as phase changes in light-dark cycle (LD), has been related to the risk of development of cardiovascular diseases due to increased sympathetic tone and reduction o Heart Rate Variability (HRV - RR intervals). Purpose: Investigate the interaction between Circadian Timing System and cardiac autonomic control in rats. Materials and methods: We used 18 Wistar rats (♀, age = 139.9 ± 32.1 days, weight = 219.5 ± 16.2 g), divided into three distinct groups: Control (CG), phase delay of 6h (GDe) and phase advance of 6h (GAd). Three animals were excluded during data collection (CG/GDe/GAd - n=5). Telemeters were surgically implanted in each animal for continuous acquisition of electrocardiographic (ECG) signals (duration of 21 days in the CG and 28 days in GDe/ GAd). A LD cycle was established 12h: 12h, beginning of light at18:00h and dark at 06:00h. The animals remained in the same CG LD cycle throughout the experimental period, while, on the 14th day of registration, the GDe and GAd underwent a delay and an advance in 6h, respectively. Throughout the experimental period, the locomotor activity (LA), the mean heart rate (mHR) and variables related to iRR [mean RR (mRR), SDNN, RMSSD, LF, HF and LF/ HF ratio ] were recorded. All data were analyzed in blocks of 3 and 7 days, for the presence of circadian rhythm, values of Cosinor - mesor, amplitude and acrophase (paired t test), phase relationship, differences between light and dark (t test independent), averages every 30 minutes along each time series (two-way ANOVA with post hoc Bonferroni). The data block B1,M1 and M2 in CG served as benchmarks for comparisons between series of analysis of the GAT/GAV. Results: We observed circadian rhythmicity in the variables LA, mRR and mFC(p<0.01). mRR and mFC showed phase relationship with the LA in all three groups, being less stable in GAd. In the CG, no significant differences between blocks were found in any of the analyzes(p>0.05). Among the 7 day blocks, there was a significant reduction in mRR(p=0.04) and mFC(p=0.03) in GDe and significant reduction in HF mean(p=0.02) in GAd; and between 3 day blocks, a significant increase of LF/HF(p= 0.04) in the GDe; besides mRR(p=0.03), SDNN(p=0.04), RMSSD (p=0.04), LF (p=0.01) and HF(p=0.02) significant increase in the GAd. It was found that the differences between the means of the mRR, LA and mFC in light and dark phases were not significant after phase changes in some of the blocks/moments (GDe and GAd). No significant results were found when comparing rhythmic variables means every 30 minutes over the blocks, except for a significant decrease in mRR at the middle of the dark phase (B2) and the start of light phase (B3) - (p<0.01). Conclusion: phase advances and delays (6h) altered cardiac autonomic control in the experimental groups by temporarily HRV decrease. Phase advances apparently had greater negative interference in this process, in relation to the phase delays.

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This master's thesis aims to analyze the activity of the operators in a control room of the processes of production on-shore petroleum, with a focus on sociotechnical restrictions that interfere in the decision-making process and the actions of operators and therefore, the strategies (individual and collective) to regulate and maintain the operator action required and the safety of the system, together. The activity in focus involves the supervision and control of the production of thousands of barrels of oil/day in a complex and dispersed production’s structures built in an extension of 80 km. This operational framework highlights the importance of this activity for the fulfilment of the targets local and corporate efficiency, good management of the environment, health and safety of operators. This is an exploratory research and in the field, which uses the methodology of Ergonomic Analysis of the Work, composed of observational techniques and interactional, having as locus control room of the processes of production on-shore oil of an oil company. The population of this research is formed by operators in the control room of an Brazilian oil company. The results showed that the supervisory activity and control of the superheated steam injection is an complex context, demands greater attention, concentration, calculations, comparisons, trend analysis and decision making. The activity is collectively constructed between the control room operator, field operator and the supplier of steam. The research showed that the processes of communication and collaboration between the control room , fields and support staff are the key elements of this activity. The study shows that the operators have the autonomy and the elements necessary for work; and that there is continuous investments to improve the technology used and that the operators report sleep disturbances as a result of chronic exposure to night work. The study contributed with proposals for transformation of this activity: with regard to the installation of a area reserved for food in control room, the update the screens of the supervisory current operating condition, the periodic visits by room operators in the field, standardization of production reports, development assistance and standardization of nomenclature of controlling stations steam systems, to improve the conditions of realization of the activity, improve the quality of products produced by operators and contribute to reduce the possibility of slips or shifts in the activity.

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This work proposes a modified control chart incorporating concepts of time series analysis. Specifically, we considerer Gaussian mixed transition distribution (GMTD) models. The GMTD models are a more general class than the autorregressive (AR) family, in the sense that the autocorrelated processes may present flat stretches, bursts or outliers. In this scenario traditional Shewhart charts are no longer appropriate tools to monitoring such processes. Therefore, Vasilopoulos and Stamboulis (1978) proposed a modified version of those charts, considering proper control limits based on autocorrelated processes. In order to evaluate the efficiency of the proposed technique a comparison with a traditional Shewhart chart (which ignores the autocorrelation structure of the process), a AR(1) Shewhart control chart and a GMTD Shewhart control chart was made. An analytical expression for the process variance, as well as control limits were developed for a particular GMTD model. The ARL was used as a criteria to measure the efficiency of control charts. The comparison was made based on a series generated according to a GMTD model. The results point to the direction that the modified Shewhart GMTD charts have a better performance than the AR(1) Shewhart and the traditional Shewhart.

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In control loops valve stiction is a very common problem. Generally, it is one of main causes of poor performance of industrial systems. Its most commonly observed effect is oscillation in the process variables. To circumvent the undesirable effects, friction compensators have been proposed in order to reduce the variability in the output. This work analyzes the friction compensation in pneumatic control valves by using feedback linearization technique. The valve model includes both dead zone and jump. Simulations show that the use of this more complete model results in controllers with superior performance. The method is also compared through simulations with the method known as Constant Reinforcement (CR), widely used in this problem.

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The epidemic caused by HIV presents a global, dynamic and unstable phenomenon, which depends on the individual and collective human behavior. Efforts to deconstruct the stigmatized image caused by infection of AIDS are still often associated with adoption of socially unacceptable behavior to be a circumscribed the susceptibilities of vulnerable individuals and communities to infection, illness and death by HIV. This study aimed to: narrate the trajectory of life of people with AIDS more vulnerable enrolled in the Municipal Social Assistance Parnamirim / RN. It is a study of qualitative, exploratory and descriptive approach, taking oral history of life as technical and methodological framework. The colony consisted of 186 people with AIDS. The network was comprised of 13 employees of both sexes, aged between 19 and 62 years old with positive diagnosis and agreed to voluntarily participate. After approval by the Ethics Committee of the Federal University of Rio Grande do Norte (CEP / UFRN), in the opinion No. 719,926 CAAE: 30408114.5.0000.5537 on 6 June 2014 data were collected from August to September 2014. The employees signed the Informed Consent and Informed and letter of assignment. Held transcribing the interviews and later returned to respondents to retest, ie so that they confer what allowed us to carry out transcreation after consecutive readings. The reports were analyzed through Bardin content analysis. Guiding the analysis of the accounts of employees, we find three themes: Prejudice and discrimination in living with AIDS; Reacting to the diagnosis and the accession process to antiretroviral treatment; and religious coping in people with AIDS. It can be concluded in this study, that employees have shown great emotional impact after positive diagnosis for HIV / AIDS, especially with regard to social life, the family ties, work and above all to the prejudice of society. Treatment with antiretroviral drugs was seen as a motivation to regain dreams and plans for a future once uncertain, and even if it is not a cure therapy, provided the employees improved quality of life.

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The epidemic caused by HIV presents a global, dynamic and unstable phenomenon, which depends on the individual and collective human behavior. Efforts to deconstruct the stigmatized image caused by infection of AIDS are still often associated with adoption of socially unacceptable behavior to be a circumscribed the susceptibilities of vulnerable individuals and communities to infection, illness and death by HIV. This study aimed to: narrate the trajectory of life of people with AIDS more vulnerable enrolled in the Municipal Social Assistance Parnamirim / RN. It is a study of qualitative, exploratory and descriptive approach, taking oral history of life as technical and methodological framework. The colony consisted of 186 people with AIDS. The network was comprised of 13 employees of both sexes, aged between 19 and 62 years old with positive diagnosis and agreed to voluntarily participate. After approval by the Ethics Committee of the Federal University of Rio Grande do Norte (CEP / UFRN), in the opinion No. 719,926 CAAE: 30408114.5.0000.5537 on 6 June 2014 data were collected from August to September 2014. The employees signed the Informed Consent and Informed and letter of assignment. Held transcribing the interviews and later returned to respondents to retest, ie so that they confer what allowed us to carry out transcreation after consecutive readings. The reports were analyzed through Bardin content analysis. Guiding the analysis of the accounts of employees, we find three themes: Prejudice and discrimination in living with AIDS; Reacting to the diagnosis and the accession process to antiretroviral treatment; and religious coping in people with AIDS. It can be concluded in this study, that employees have shown great emotional impact after positive diagnosis for HIV / AIDS, especially with regard to social life, the family ties, work and above all to the prejudice of society. Treatment with antiretroviral drugs was seen as a motivation to regain dreams and plans for a future once uncertain, and even if it is not a cure therapy, provided the employees improved quality of life.

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The spread of wireless networks and growing proliferation of mobile devices require the development of mobility control mechanisms to support the different demands of traffic in different network conditions. A major obstacle to developing this kind of technology is the complexity involved in handling all the information about the large number of Moving Objects (MO), as well as the entire signaling overhead required to manage these procedures in the network. Despite several initiatives have been proposed by the scientific community to address this issue they have not proved to be effective since they depend on the particular request of the MO that is responsible for triggering the mobility process. Moreover, they are often only guided by wireless medium statistics, such as Received Signal Strength Indicator (RSSI) of the candidate Point of Attachment (PoA). Thus, this work seeks to develop, evaluate and validate a sophisticated communication infrastructure for Wireless Networking for Moving Objects (WiNeMO) systems by making use of the flexibility provided by the Software-Defined Networking (SDN) paradigm, where network functions are easily and efficiently deployed by integrating OpenFlow and IEEE 802.21 standards. For purposes of benchmarking, the analysis was conducted in the control and data planes aspects, which demonstrate that the proposal significantly outperforms typical IPbased SDN and QoS-enabled capabilities, by allowing the network to handle the multimedia traffic with optimal Quality of Service (QoS) transport and acceptable Quality of Experience (QoE) over time.