scholarly journals Uma análise comparativa sobre o custo-benefício do steel frame e da alvenaria estrutural em um projeto condominial. / A comparative cost-benefit analysis of steel frame and structural masonry in a condominium project

2021 ◽  
Vol 7 (12) ◽  
pp. 113979-113993
Author(s):  
Filipe Marques Oliveira ◽  
Antônio Estanislau Sanches ◽  
Érika Cristina Nogueira Marques Pinheiro
Author(s):  
Lucas E. Yamat ◽  
Claude G. Mung'ong'o

Abstract Despite a growing body of evidence that highlights the economic, social and environmental benefits of mobile pastoralism, few governments are ready to tolerate mobility and many policy makers promote knowingly or inadvertently the policies of sedentarization. This production system seems not to be clearly understood by many and has been characterized as backward, environmentally destructive and economically unsustainable; and the view is that it should be replaced with more sedentary forms of livestock production or other beneficial land uses. The overriding question is whether sedentary livestock keeping is more productive and utilizes fewer resources and less space than the mobile pastoral system. This study carried out a comparative cost-benefit analysis of the two production systems in selected villages of Kiteto and Karatu districts. The aim was to come up with credible data to test this hypothesis. Two alternatives were compared in terms of their net present value (NPV) to test a null hypothesis. The alternative with an NPV greater than zero or higher than its alternative was accepted to be more viable compared with the one with an NPV less than zero or less than its alternative. Whenever the NPV of the sedentary production system in the analysis was shown to be greater than zero and/or greater than the NPV of the mobile pastoral production system the null hypothesis was accepted and vice versa. The study was conducted in Makame village of Kiteto District and Dofa village of Karatu District. Makame village represents a mobile pastoral production system while Dofa village represents a sedentary production system. The study employed a quantitative approach using a household survey in the two villages. The comparative cost-benefit analysis was carried out using monetary values derived from the livestock unit statistical approach. The findings have revealed that the average cost of maintaining a mobile pastoral and sedentary production systems are TSh90,096,333 and TSh112,295,200, respectively. The cost-benefit ratios are 1:0.5 for a mobile pastoral production system and 1:0.25 for the sedentary one.


2017 ◽  
Vol 8 (4) ◽  
pp. 424-433 ◽  
Author(s):  
Robin Gomila ◽  
Rebecca Littman ◽  
Graeme Blair ◽  
Elizabeth Levy Paluck

Data quality and trust in the data collection process are critical concerns in survey research, particularly when surveyors are needed for reaching “diverse and inconvenient subject pools.” In response to irregularities in a smartphone-based pilot survey data collection in Nigeria, we developed an audio check method that unobtrusively recorded surveyors reading aloud questions to participants. We present evidence that this method detected wholesale data fabrication in 14% of our surveys, prevented further fabrication, and improved data quality through provision of regular feedback to surveyors. Using simulation, we demonstrate that undetected fabrication would have introduced significant bias in our analyses. The audio check performs well compared to more traditional methods of detecting fabrication, and a comparative cost–benefit analysis reveals a savings of more than US$1,500 per surveyor by relying on the audio check. The audio check is a viable tool for psychologists who work with survey teams.


1995 ◽  
Vol 69 (1-2) ◽  
pp. 45-66 ◽  
Author(s):  
Michael Erisman

Survey of the basic developmental dynamics involved in the evolving Cuban-CARICOM relationship. On the basis of a cost-risk/benefit analysis, the author provides some projections regarding the future of this relationship. He concludes that there appear sufficient potential benefits for both sides to deepen the relationship. Cuban-CARICOM integration, however, has no top priority for either partner.


Nephron ◽  
1983 ◽  
Vol 33 (1) ◽  
pp. 1-4 ◽  
Author(s):  
V. Bonomini ◽  
L. Baldrati ◽  
S. Stefoni

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