22 resultados para Diffusion Chambers, Culture


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Both managers and scholars have convictions about the organizational approaches that best support organizational performance of the respective organizations and its Quality Management Systems. After a literature review of ISO 9001 Quality Management Systems (including the changes introduced by the 2015 edition), Organizational Culture theories are addressed and input from a CEO´s focus group was gathered. The importance of organizational culture for the success of Quality Management Systems and the achievement of the organizational desired results is highlighted. The article advances a proposal to analyze ISO 9001 International Standard through the lens of organizational culture theories identifying a stronger open systems approach (influence of the environment, dynamic perspective, need for survival) of the 2015 ISO 9001 edition when compared with the 2008 one. This provides additional knowledge both to scholars and practitioners for a better understanding of the culture issues that can maximize ISO 9001 Quality Management Systems 2015 edition contributions to organizational enduring success.

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In recent years, organizational culture has become one of the common themes of interest of scientific and academic research. Each organization has its own unique cultural identity. Based on the recognition that organizational culture is considered important to an organization’s results, and social economy organizations are concerned with improving managerial practices and results, our objective is to study organizational culture in cooperatives: identifying their organizational culture as a specific type of organization of the social economy, recognized as increasingly important economic agents; and in doing so, explore the usage of a widely known model, the Competing Values Framework (Quinn & Rohrbaugh 1983). Three cooperatives were studied. Their presidents were interviewed, and a questionnaire was applied to cooperative members to obtain demographic and organizational culture data. Differences between the cooperatives’ cultural profiles seem to be consistent with both the circumstances of Portuguese social economy organizations (SEOs), and to the organizations’ uniqueness regarding their trade, focuses, and history. International firm trends were compared with this study’s results, and also appear to be explained by the SEO’s management practices evolution standpoint: lack of structured way of working, and the need to improvise and innovate in order to get things done. The importance of our research is held in the fact that social economy, and the cooperative movement in particular, has a developing importance in the expansion of many economies, the lack of literature on culture in SEOs, and the exploratory usage of a well-known model of management literature in cooperatives.

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Part of the optical clearing study in biological tissues concerns the determination of the diffusion characteristics of water and optical clearing agents in the subject tissue. Such information is sufficient to characterize the time dependence of the optical clearing mechanisms—tissue dehydration and refractive index (RI) matching. We have used a simple method based on collimated optical transmittance measurements made from muscle samples under treatment with aqueous solutions containing different concentrations of ethylene glycol (EG), to determine the diffusion time values of water and EG in skeletal muscle. By representing the estimated mean diffusion time values from each treatment as a function of agent concentration in solution, we could identify the real diffusion times for water and agent. These values allowed for the calculation of the correspondent diffusion coefficients for those fluids. With these results, we have demonstrated that the dehydration mechanism is the one that dominates optical clearing in the first minute of treatment, while the RI matching takes over the optical clearing operations after that and remains for a longer time of treatment up to about 10 min, as we could see for EG and thin tissue samples of 0.5 mm.

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The study of agent diffusion in biological tissues is very important to understand and characterize the optical clearing effects and mechanisms involved: tissue dehydration and refractive index matching. From measurements made to study the optical clearing, it is obvious that light scattering is reduced and that the optical properties of the tissue are controlled in the process. On the other hand, optical measurements do not allow direct determination of the diffusion properties of the agent in the tissue and some calculations are necessary to estimate those properties. This fact is imposed by the occurrence of two fluxes at optical clearing: water typically directed out of and agent directed into the tissue. When the water content in the immersion solution is approximately the same as the free water content of the tissue, a balance is established for water and the agent flux dominates. To prove this concept experimentally, we have measured the collimated transmittance of skeletal muscle samples under treatment with aqueous solutions containing different concentrations of glucose. After estimating the mean diffusion time values for each of the treatments we have represented those values as a function of glucose concentration in solution. Such a representation presents a maximum diffusion time for a water content in solution equal to the tissue free water content. Such a maximum represents the real diffusion time of glucose in the muscle and with this value we could calculate the corresponding diffusion coefficient.

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In recent years, organizational culture has become one of the common themes of interest of scientific and academic research. Each organization has its own unique cultural identity. Based on the recognition that organizational culture is considered important to an organization’s results, and social economy organizations are concerned with improving managerial practices and results, our objective is to study organizational culture in cooperatives: identifying their organizational culture as a specific type of organization of the social economy, recognized as increasingly important economic agents; and in doing so, explore the usage of a widely known model, the Competing Values Framework (Quinn & Rohrbaugh 1983). Three cooperatives were studied. Their presidents were interviewed, and a questionnaire was applied to cooperative members to obtain demographic and organizational culture data. Differences between the cooperatives’ cultural profiles seem to be consistent with both the circumstances of Portuguese social economy organizations (SEOs), and to the organizations’ uniqueness regarding their trade, focuses, and history. International firm trends were compared with this study’s results, and also appear to be explained by the SEO’s management practices evolution standpoint: lack of structured way of working, and the need to improvise and innovate in order to get things done. The importance of our research is held in the fact that social economy, and the cooperative movement in particular, has a developing importance in the expansion of many economies, the lack of literature on culture in SEOs, and the exploratory usage of a well-known model of management literature in cooperatives.

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This study aims to analyze and compare micro-firms’ organizational culture related to organizational performance. A case study methodology was used based on four firms, competitors among themselves in the Information Technology business, focusing on the years between 2008-2013. Findings pointed out many similarities to larger firms, but some specificities of micro-firms were found and propositions were defined: clan culture predominance is related to best performing micro-firms; the configuration of several culture types seemed to be the most suitable for obtaining good organizational results, provided that they do not focus only on hierarchy and market types of culture; the market culture predominance perception by employees is associated with low job satisfaction; and, after a certain time in business, micro-firms, as do larger companies, seek to standardize and control processes. Recognizing that organizational culture is considered important to firms’ results, this study sheds some light on that important factor for micro-firms.

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The study of chemical diffusion in biological tissues is a research field of high importance and with application in many clinical, research and industrial areas. The evaluation of diffusion and viscosity properties of chemicals in tissues is necessary to characterize treatments or inclusion of preservatives in tissues or organs for low temperature conservation. Recently, we have demonstrated experimentally that the diffusion properties and dynamic viscosity of sugars and alcohols can be evaluated from optical measurements. Our studies were performed in skeletal muscle, but our results have revealed that the same methodology can be used with other tissues and different chemicals. Considering the significant number of studies that can be made with this method, it becomes necessary to turn data processing and calculation easier. With this objective, we have developed a software application that integrates all processing and calculations, turning the researcher work easier and faster. Using the same experimental data that previously was used to estimate the diffusion and viscosity of glucose in skeletal muscle, we have repeated the calculations with the new application. Comparing between the results obtained with the new application and with previous independent routines we have demonstrated great similarity and consequently validated the application. This new tool is now available to be used in similar research to obtain the diffusion properties of other chemicals in different tissues or organs.