Recomendações para o desenvolvimento de uma ferramenta de suporte às primeiras decisões projetuais visando ao desempenho energético de edificações de escritório em clima quente

PEDRINI, Aldomar; SZOKOLAY, Steven. Recomendações para o desenvolvimento de uma ferramenta de suporte às primeiras decisões projetuais visando ao desempenho energético de edificações de escritório em clima quente. Ambiente Construído, Porto Alegre, v. 5, n. 1, p.39-54, jan./mar. 2005. Trimestral. Disponível em: . Acesso em: 04 out. 2010.

A importância da liderança no clima organizacional: estudo caso da AMP

Esta Monografia intitulada, “A importância da liderança no clima organizacional” realizada na Cidade do Mindelo, na Universidade do Mindelo, incide sobre a problemática da organização das empresas, como sendo um dos pilares base para a liderança dentro das empresas, centrando a sua importância na influência que esta tem no clima organizacional, sem descorar do seu impacto para o bom funcionamento de qualquer empresa. Por isso, apresentam-se ao longo deste trabalho os vários aspetos que podem ser determinantes para que possa haver um bom clima organizacional, e como é que a liderança pode contribuir para tal, como sendo determinante para o sucesso ou insucesso de uma empresa ou serviço. Ele revela ainda os diferentes modelos e finalidades de liderança, versando também a importância da formação e do conhecimento do líder para um melhor acompanhamento da sua empresa tendo como pano de fundo um bom clima organizacional. Realça-se também, as consequências que são causados por uma má liderança ou um clima organizacional instável, bem como as suas consequências para o ambiente profissional e as interferências que isto pode ter no sucesso ou insucesso de uma empresa ou serviço, conduzindo assim a performance deste ou aquele serviço. A partir da metodologia utilizada conseguiu-se avaliar o tipo de clima organizacional e a liderança existentes na empresa em estudo e estabelecer a uma comparação da forma como a teoria se articula com a prática. Os resultados alcançados demostram que a liderança influencia no clima organizacional de forma positiva ou negativa.

Cambios del clima, durante los últimos cinco millones de años, observados en el África Atlántica (Islas Canarias)

[ES] En las Canarias orientales, testimonios geológicos del inicio del Plioceno hasta la actualidad han permitido constatar la evolución paleoclimática desde una importante posición en el margen sahariano atlántico. Esta evolución revela la existencia de oscilaciones climáticas caracterizadas por la sucesión de climas que pasan de húmedos y cálidos a cálidos y áridos y que coinciden, respectivamente, con el inicio y el final de períodos interglaciales durante los que el mar fue transgresivo.

A Importância do Clima Organizacional no Desempenho das Equipes de Trabalho: um estudo de caso no Instituto Federal de Educação, Ciência e Tecnologia da Paraíba

O comportamento humano e os aspectos que influenciam na dinâmica organizacional têm sido alvo constante de estudiosos do assunto e uma preocupação crescente das organizações. Uma organização que dispõe de um ambiente de trabalho favorável, onde se encontra uma predisposição dos envolvidos a manterem um clima de colaboração, comprometimento e relações saudáveis pode promover imensamente a motivação e a satisfação das pessoas com o trabalho. O presente estudo teve como objetivo avaliar quais fatores e de que forma influenciam a formação do clima organizacional entre os servidores técnicos-administrativos em relação ao ambiente de trabalho e aos aspectos que o envolvem, como perfil de liderança, motivação, trabalho em equipe, entre outros. Para tanto, foi realizado um estudo de campo junto aos funcionários técnicos-administrativos do Instituto Federal de Educação Ciência e Tecnologia da Paraíba. Quanto aos meios, o estudo foi desenvolvido nos moldes da pesquisa descritiva e, quanto aos fins, foi bibliográfica, documental e estudo de caso. A coleta de dados deu-se através de questionários que é a forma mais utilizada para esta atividade, pois possibilita medir com melhor precisão o que se deseja pesquisar. Este questionário foi aplicado a uma amostra de cinquenta funcionários do IFPB. Os resultados alcançados através do estudo de caso realizado na unidade de João Pessoa permitiram identificar que seus colaboradores percebem um clima de trabalho bastante favorável e no geral sentem-se motivados para o desempenho de suas funções. No entanto, com relação às políticas de treinamento, observou-se certo grau de insatisfação, o que vem a ser um problema da Gestão de Recursos Humanos de algumas organizações públicas. / Human behavior and the factors influencing the organizational dynamics has been the constant target of scholars, and an increasing concern for organizations. An organization that offers a supportive work environment, where there is a predisposition of those involved to maintain a climate of cooperation, commitment and healthy relationships, can greatly promote the motivation and satisfaction of people with work. This study aimed to verify the perception and satisfaction of employees in relation to the work environment and issues surrounding it, as the profile of leadership, motivation, teamwork, among others. For this, we conducted a field study from employees Technical Administrators Federal Institute of Science and Technology Education of Paraíba. As for the means, the study was developed along the lines of descriptive research on the purposes it was literature, documentary and case study. Data collection took place through questionnaires is the most used for this activity, since it allows to measure with better precision what it wants to search. This questionnaire was administered to a sample of fifty employees of the IFPB. The results achieved through the case study conducted in João Pessoa unity identified that your employees perceive a very favorable working atmosphere and overall feel motivated to perform their functions. However, with respect to the policies of training, there was some degree of dissatisfaction, which becomes a problem of human resources management of some public organizations.

Clima Organizacional: as práticas e contribuição do gestor

Este trabalho pretende refletir o papel da gestão de pessoas, estudando ações e atitudes que podem fazer a diferença no desempenho da organização no mercado de trabalho. Especialmente nas organizações pequenas com menos de dez funcionários, onde as relações entre as pessoas são mais próximas e os resultados são mensurados mais facilmente pelo gestor atento ao clima organizacional. Buscamos pensar no clima dentro da organização, como fator decisório para o sucesso e prosperidade da pequena organização. A pesquisa se deu em cinco pequenas empresas nos municípios Pernambucanos de Escada e Jaboatão dos Guararapes. Todas com menos de dez funcionários que vivem na busca da consolidação diante do mercado competitivo. O clima organizacional quando descrito como satisfatório garante o comprometimento pleno de todos os funcionários de uma empresa? Veremos que há muitos fatores envolvidos nas relações entre líderes e liderados e a prosperidade da empresa. / This work intends to consider the role of people management, studying actions and attitudes that can make a difference in organization performance in the job market. Especially, in small organizations with fewer than ten employees, while relations between people are closer and the results are more easily measured by the manager on alert to organizational climate. We seek to think about the climate inside the organization, as a factor making for success and prosperity of the small organization. The research was prepared in five small businesses of the cities of “Escada” and “Jaboatão dos Guararapes” in the state of Pernambuco. All with less than ten employees that live in search of the consolidation on the competitive market. The organization climate when described as satisfactory guarantees the full commitment of all the employees of a company? We will see that there are many factors involved in the relations between leaders and subordinates and prosperity of the company.

Cultura e clima organizacionais: um estudo multicasos em indústrias de laticínios do estado do Rio Grande do Norte

The objective of this study is to investigate if exist relationship between organizational culture and the organizational climate, having as research s locus three dairy industries in the Rio Grande do Norte State. As such, an exploratory-descriptive and conclusive-causal study, with a sample composed of 211 employees of all firms hierarchical levels was undertaken. By way the data collection, the employees personal characteristics, the predominant organizational culture profile and the predominant organizational climate in the industries researched were identified. In order to analyse the organizational culture, the Competing Value Model (CAMERON; QUINN, 2006), with adaptations by Santos (1998, 2000), was used. In order to analyse the organizational climate, the Organizational Climate Measurement Scale, proposed by Martins (et al., 2004, 2008), with modifications, was used. The data were submitted to quantitative statistical analyses, firstly to the set of firms and afterwards to the firms alone, that permitted arrival to the following conclusions: the cultural profiles was met in a balanced way in the researched organizations, with emphasis to clan culture and market culture profiles; the researched organizations have a good organizational climate, based in the Martins (2008) classification, with emphasis to boss and organization s support and physical comfort , being these factors coherent whit the clan culture profile; the personal variables are correlated with the cultural profiles and with the organizational climate factors, however, each organization show its singular form of relation; and the cultural profiles showed influence on organizational climate factors. Thus, the results permitted to conclude that there are relations between the cultural profiles and the organizational climate factors in the researched organizations

Proposta de método para avaliação do desempenho térmico de residências unifamiliares em clima quente e úmido

Nowadays, evaluation methods to measure thermal performance of buildings have been developed in order to improve thermal comfort in buildings and reduce the use of energy with active cooling and heating systems. However, in developed countries, the criteria used in rating systems to asses the thermal and energy performance of buildings have demonstrated some limitations when applied to naturally ventilated building in tropical climates. The present research has as its main objective to propose a method to evaluate the thermal performance of low-rise residential buildings in warm humid climates, through computational simulation. The method was developed in order to conceive a suitable rating system for the athermal performance assessment of such buildings using as criteria the indoor air temperature and a thermal comfort adaptive model. The research made use of the software VisualDOE 4.1 in two simulations runs of a base case modeled for two basic types of occupancies: living room and bedroom. In the first simulation run, sensitive analyses were made to identify the variables with the higher impact over the cases´ thermal performance. Besides that, the results also allowed the formulation of design recommendations to warm humid climates toward an improvement on the thermal performance of residential building in similar situations. The results of the second simulation run was used to identify the named Thermal Performance Spectrum (TPS) of both occupancies types, which reflect the variations on the thermal performance considering the local climate, building typology, chosen construction material and studied occupancies. This analysis generates an index named IDTR Thermal Performance Resultant Index, which was configured as a thermal performance rating system. It correlates the thermal performance with the number of hours that the indoor air temperature was on each of the six thermal comfort bands pre-defined that received weights to measure the discomfort intensity. The use of this rating system showed to be appropriated when used in one of the simulated cases, presenting advantages in relation to other evaluation methods and becoming a tool for the understanding of building thermal behavior

Análise do custo-benefício de sistemas de cobertas em edificações comerciais para o clima de Natal/RN visando eficiência energética

This research consists in studying the influence of the various type of construction systems of roofs with their energy efficiency as well as on the cost benefit for the commercial buildings on the temperatures condition of the city of Natal/RN. The main goal of this research is to analyze the cost benefit of the construction systems of roofs available on the market, taking into consideration the energy efficiency of the commercial buildings artificially air conditioned in order to be used by the projectors and to be adequated to the temperatures condition of the city of Natal/RN. The method of valuation of the cost benefit of roof systems consists in six steps: Features and simulation of the reference building; Analyze of sensitivity; Analyzes, features and simulation of alternatives of roof construction systems; Analyze of the cost of implementation; Analyze of the benefits of the alternatives comparing to the base case; And finally the analyze of the cost benefit. The model type chosen as reference was stores with pre molded buildings and system of roof with fiber ciment and ceiling . The thermal results showed the influence of the roof system on the energy efficiency of the building. The Final results of the simulations of the alternatives comes to a conclusion that the absortance is the variable that presents the best cost benefit relation and the reduction on the thermal transmittance still has limitations because of the high cost

Análise de métodos de predição de conforto térmico de habitação em clima quente-úmido com condicionamento passivo

The assessment of building thermal performance is often carried out using HVAC energy consumption data, when available, or thermal comfort variables measurements, for free-running buildings. Both types of data can be determined by monitoring or computer simulation. The assessment based on thermal comfort variables is the most complex because it depends on the determination of the thermal comfort zone. For these reasons, this master thesis explores methods of building thermal performance assessment using variables of thermal comfort simulated by DesignBuilder software. The main objective is to contribute to the development of methods to support architectural decisions during the design process, and energy and sustainable rating systems. The research method consists on selecting thermal comfort methods, modeling them in electronic sheets with output charts developed to optimize the analyses, which are used to assess the simulation results of low cost house configurations. The house models consist in a base case, which are already built, and changes in thermal transmittance, absorptance, and shading. The simulation results are assessed using each thermal comfort method, to identify the sensitivity of them. The final results show the limitations of the methods, the importance of a method that considers thermal radiance and wind speed, and the contribution of the chart proposed

Recomendações para o desenvolvimento de uma ferramenta de suporte às primeiras decisões projetuais visando ao desempenho energético de edificações de escritório em clima quente

PEDRINI, Aldomar; SZOKOLAY, Steven. Recomendações para o desenvolvimento de uma ferramenta de suporte às primeiras decisões projetuais visando ao desempenho energético de edificações de escritório em clima quente. Ambiente Construído, Porto Alegre, v. 5, n. 1, p.39-54, jan./mar. 2005. Trimestral. Disponível em: . Acesso em: 04 out. 2010.

Uma janela tropical: análise do desempenho luminoso de ambientes com aberturas sombreadas para o clima de Natal/RN

This master thesis introduces assessment procedures of daylighting performance in office rooms with shaded opening, recommendations for Natal-RN (Latitude 05,47' S, Longitude 35,11' W). The studies assume the need of window exterior shading in hot and humid climate buildings. The daylighting performance analyses are based on simulated results for three levels of illuminance (300,500 e 1000 lux) between 08h00 e 16h00, in rooms with 2,80 m height, 6 m large and 4 m, 6 m e 8 m depths, with a centered single opening, window wall ratio (20%, 40% e 60%), four orientations (North, East, South and West), and two types of sky (clear and partially cloudy). The sky characteristics were statistically determined based on hourly data from INPE-CRN solar and daylighting weather station. The lighting performance is resulted from dynamic computer simulation of 72 models using Troplux 3.12. The simulation results were assessed using a new parameter to quantify the use of interior daylighting, the useful percentage of daylight (PULN), which corresponds to the time fraction with satisfactory light, in accordance with the illuminance design. The passive zone depths are defined based on the PULN. Despite the failures of illuminance data from the weather station, the analyses ratified the high potential of daylighting for shaded rooms. The most influential variables on the lighting performance are the opening size and the illuminance of design, while the orientation is a little influential

Crescimento e desenvolvimento de Plinia cauliflora de acordo com a intensidade luminosa em clima subtropical

The jabuticaba fruit tree from classified in the Myrtaceae family and Plinia genre. There are about nine species of this fruit tree, that include as most important, Plinia trunciflora (jabuticaba de cabinho), naturally occurring in southwestern Paraná State, Brazil, P. cauliflora (jabuticaba Paulista or Jabuticaba Açu) and P. jaboticaba (Vell) (jabuticaba sabará), with all the over species producing fruit for the industry or fresh consumption. Nevertheless, there aren‟t commercial orchards with this culture, with highest yield part from extractive. This fact can be combined with lack of technical knowledge for the plants produce in the field. As these species are found in the forest, the first point is whether they can adapt to other light intensity conditions. The aim of this work was to identify the adaptive behavior of jabuticaba fruit seedling and tree when they were put in different light intensities and what this can be considered ideal for the growth, as well as, its influence in the leaves secondary compounds production. Two experiments were conducted, with the first involved with the study of the seedlings and the second with plants in the field. The work was carried out at Universidade Tecnológica Federal do Paraná – Câmpus Dois Vizinhos, Paraná State - Brazil. The experimental design was a completely randomized and a block design with four treatments and four replications of 10 seedlings or two plants per plot, according to nursery or orchard conditions, respectively. The treatments were base according to the light intensity. The treatments used were, 1 - full sun, similar the orchard condition, with 0% shading; 2 - side cover with shade cloth and top with transparent plastic, representing a gap forest condition; 3 - side and top cover with shade cloth, representing stage where the forest canopy is closing, focusing only indirect sunlight; 4 - side and top cover with shade cloth, simulating a closed canopy condition, with PPD (photon flux density) of 10% (90% shading); 5 - side and top cover with shade cloth, simulating a more open canopy condition with PPD 65% (35% shading). The growth and development seedling and plant characteristics were evaluated once by month, as also, during time part in the plants the secondary metabolites leaves, soil activity microbiological and the fresh and dry matter root and shoot and, root length from seedlings. For the growth and development of jabuticaba Açú Paulista seedling recommend to use of side cover with shade cloth and top with transparent plastic, representing a gap forest condition. In orchard, for the growth and development of plants jabuticaba Híbrida tree it was recommended the use of side and top cover with shade cloth of some type. For production of secondary metabolites of leaves, the plant must to be full sunlight condition orchard.

Clima urbano e vegetação: estudo analítico e prospectivo do Parque das Dunas em Natal

The present study deals with the relationship between urban vegetation and climate. The process whereby the Parque das Dunas a 1,172 ha green area in the city of Natal, State of Rio Grande do Norte exerts influence on the climate of the city is analyzed. The hypothesis on which the present work rests is that the green area referred to acts upon the climate of the city. The study is based on the analysis of climatic factors and elements of this green area and of the city of Natal. In order to give rise to final recommendations, a methodology grounded on a quantitative and qualitative standpoint has been used. The data were collected both within and without the limits of the Parque das Dunas area. Secondary and primary data resulting from the measurements taken by the researcher and her work group have been used. The aim was to contribute to the understanding of the influence of vegetation on the climate of a city having a warm and humid climate. A historical and environmental characterization of the Parque das Dunas was then sought. The local climatic factors and the elements of the climate have been studied within the scope of the city of Natal. A comparative study between the climatic elements within and without the limits of the Parque das Dunas area from the survey of technical data and the systematization of the information collected has been made, aiming at proposing a set of bioclimatic recommendations for the urban design in Natal. The results of such work allowed for the validation of the important role that the Parque das Dunas plays in the climate of Natal. This has led to the acknowledgement of the relevance of the green areas on the climate of cities. They bring about important benefits to the process of rendering agreeable the climate in the urban environment by providing pleasant microclimates that give a valuable contribution to the environmental comfort of urban nuclei having the same size of Natal

Simulação computacional como ferramenta de auxílio ao projeto: aplicação em edifícios naturalmente ventilados no clima de Natal/RN

Natural air ventilation is the most import passive strategy to provide thermal comfort in hot and humid climates and a significant low energy strategy. However, the natural ventilated building requires more attention with the architectural design than a conventional building with air conditioning systems, and the results are less reliable. Therefore, this thesis focuses on softwares and methods to predict the natural ventilation performance from the point of view of the architect, with limited resource and knowledge of fluid mechanics. A typical prefabricated building was modelled due to its simplified geometry, low cost and occurrence at the local campus. Firstly, the study emphasized the use of computational fluid dynamics (CFD) software, to simulate the air flow outside and inside the building. A series of approaches were developed to make the simulations possible, compromising the results fidelity. Secondly, the results of CFD simulations were used as the input of an energy tool, to simulate the thermal performance under different rates of air renew. Thirdly, the results of temperature were assessed in terms of thermal comfort. Complementary simulations were carried out to detail the analyses. The results show the potentialities of these tools. However the discussions concerning the simplifications of the approaches, the limitations of the tools and the level of knowledge of the average architect are the major contribution of this study

Análisis del clima organizacional y su relación con el desempeño laboral de la plana docente del Consorcio Educativo Talentos de la ciudad de Chiclayo

Trabajo de suficiencia profesional