Urban mobility plays a key role in the ecosystems of complex smart cities. It is considered a key factor in enabling cities to become more intelligent, which highlights the importance of identifying the drivers that improve the intelligence of cities. In this study, we investigate the main drivers with the potential to increase urban mobility intelligence and assign them a priority. Following on from a systematic review of the literature, we conducted broad and detailed bibliographic research based on the recommendations of the Preferred Reporting Items for Systematic Reviews and Meta-Analysis (PRISMA). We also surveyed 181 professionals working in the field concerned to confirm the importance of different drivers and assign them a level of priority. The results show that 27 drivers identified in the literature were considered important, of which seven, related to city governance and technical solutions, were considered the most important to increase urban mobility intelligence.
Resumo Embora existam muitas abordagens sobre a exposição ocupacional ao ruído, a análise da percepção individual do trabalhador e suas implicações sobre o seu comportamento constituem ainda um tema raramente abordado. Objetivando colaborar em minimizar esta lacuna, fez-se um levantamento do estado da arte das publicações que relacionam às variáveis que estariam associadas à exposição ao risco físico ruído no meio laboral com o uso do equipamento de proteção auditivo. Após, utilizou-se uma amostra de 278 trabalhadores industriais expostos a níveis de pressões sonoras superiores a 80 dB (A) para examinar a relação entre a percepção do ruído ocupacional e o uso do equipamento individual auditivo. A aplicação da técnica de análise fatorial a esses dados permitiu ainda quantificar efeitos diretos e indiretos de um conjunto de fatores sobre o uso do equipamento. Concluiu-se que a percepção da exposição ao risco do ruído pelos trabalhadores é um importante preditor sobre a decisão de uso do equipamento de proteção auditiva.
O objetivo do artigo é identificar quais variáveis podem influenciar nos Índices de Percepção da Corrupção dos países, por meio de uma análise da atuação simultânea de variáveis relacionadas aos fatores social, político, jurídico e econômico. A metodologia da pesquisa compreende então a construção de um modelo de regressão linear múltipla, representativo da relação entre os Índices de Percepção da Corrupção dos países e conjunto de variáveis analisadas. Para a coleta de dados, informações disponibilizadas por vários sítios de internet internacionais (Transparency International, NationMaster database, World Bank, Fraser Institute of Economics, Freedom House and the United Nations) foram acessadas, a partir das quais criou-se um banco de dados para a realização da análise de regressão linear múltipla, seguindo os pressupostos desta técnica e, considerando uma modelagem com quatro hipóteses. Os resultados encontrados apontaram que, ao serem analisadas simultaneamente, as variáveis estaticamente significantes do modelo (p-value<=10) estão relacionadas aos fatores: i) político (Liberdade Civil e Direitos Políticos), ii) social (Educação e Renda Nacional Bruta Per Capita) e iii) jurídico (Imparcialidade do Júri e Integridade do Sistema Jurídico). Quanto as variáveis relacionadas ao fator econômico, não foram encontradas evidências estatísticas (p-value>0,10) de que as mesmas influenciem nos Índices de Percepção da Corrupção. A pesquisa aqui abordada auxilia os formuladores de políticas públicas dos países na concepção de políticas públicas que visem influenciar, de forma positiva, no Índice de Percepção da Corrupção destes.
Goal:The main objective of this study is to analyze the benefits and the critical success factors (CSF) to use of Earned Value Management (EVM) in the construction projects. Design / Methodology / Approach: The research methodology was quantitative approach with statistical analysis of questionnaire with 106 answered and validated using the Cronbach's alpha and Kaiser-Meyer-Olkin. Results: The construction companies identified the benefits and CSF in the use of EVM. The observed benefits were: achieving project cost, the definition of scope and schedule, anticipating project and project communication. The observed CSF were: team training, project management maturity, top management support, the need of pre-defined procedures, and the use of appropriate software. Limitations of the investigation:The sample of research was composed exclusively of Brazilian construction managers. Practical implications: Monitoring construction projects using EVM for construction companies. Originality / Value: The EVM is widely used for project management. However, there are few studies on its use in the construction industry.
Due to the economic crisis, the Brazilian construction companies faced the challenge of remaining competitive in the market, therefore they need to be restructured. Construction projects are intrinsically risky because it changes the environment both physically and socially. Given this complexity and the great exposure to risk, this research aims to evaluate the market risks in construction projects through a field research, analyzing the perception and judgment of professionals in the area. The data analysis was performed by a multivariate index based on the statistical technique Factor Analysis that can be ordered by risk factors by degree of importance. It was possible to confirm the degree of correlation between the subgroups of risk factors and to establish a ranking of the degree of their importance, and the first one considered more relevant was the risk of reducing the quality of the workforce. It was also identified the low maturity in risk management in organizations, even though in civil works a thorough risk analysis is required.
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