4,202 research outputs found
Project Manager and Systems Engineer: a literature rich reflection on roles and responsibilities
There are several definitions of Systems Engineering (SE) in the literature, each with different definitions of its relationship with Project Management (PM), causing a great deal of misunderstanding. The paper offers a broad and critical discussion of the relevant literature with a deep reflection concerning the historical evolution and state-of-the-art of both the definition of SE and its relationship with PM. This endeavor provides two main results: (i) a conceptual framework to define SE in a project based environment and (ii) a model to identify the best formal interaction between the Project Manager and System Engineer based on the project characteristics
Recuperação de Mata Ciliar em Ouro Preto do Oeste, estado de Rondônia, Brasil.
Este trabalho foi realizado na bacia do rio Boa Vista localizada no município de Ouro Preto do Oeste, Rondônia, com o intuito de avaliar o desenvolvimento de um plantio de espécies arbóreas na área de mata ciliar. A recuperação desta bacia se deu mediante acordos firmados entre o poder público Estadual e a sociedade envolvida, a partir daí vários produtores se engajaram no projeto, visto que o rio é muito importante na região e também é fonte de captação da água que abastece a cidade. Foi observado a área de um produtor envolvido neste processo. No caso em estudo foram encontradas 13 espécies, 11 famílias e 92 indivíduos plantados e nativos, com grande chance de sobrevivência nas parcelas.Resumos do VIII Congresso Brasileiro de Agroecologia. Porto Alegre/RS - 25 a 28/11/2013. Trabalho n. 14816
Managing Drivers of Cost in the Construction of Nuclear Plants
To make a meaningful contribution toward clean, reliable, and economical future energy systems, nuclear power plants (NPPs) must be cost and risk competitive with other low-carbon technologies within near-term timeframes. Recent new builds in the United States and western Europe have suffered from two phenomena. First, they are expensive in absolute and relative terms: the cost per MW installed, along with the size of the plant, makes them among the most expensive power plants of any type. Second, they have all been delivered overbudget and late, making the construction of an NPP a risky investment, which in turn increases the cost of borrowing money for new projects
Temperature dependence of surface stress across an order-disorder transition: p(1x2)O/W(110)
Strain relaxations of a p(1x2) ordered oxygen layer on W(110) are measured as
a function of temperature across the disordering transition using low-energy
electron diffraction. The measured strains approach values of 0.027 in the
[1-10] and -0.053 in the [001] direction. On the basis of the measured strain
relaxations, we give quantitative information on temperature-dependent surface
stress using the results of ab initio calculations. From the surface formation
energy for different strains, determined by first-principles calculations, we
estimate that surface stress changes from -1.1 for the ordered phase to -0.2N/m
for the disordered one along [1-10], and from 5.1 to 3.4 N/m along [001].
Moreover, our observation that the strains scale inversely with domain size
confirms that the strain relaxation takes place at the domain boundaries.Comment: 8 pages, 5 figure
Light filth method on semolina and pasta
Samples of semolina and pasta were collected from one mill and one pasta plant in Italy for six and four years respectively. They were analyzed by AOAC light filth method (225 g).
Altogether, 195 semolina were collected from 2007 to 2012. The mean number of insect fragments detected during this period was 4.9, and each year, a mean of one first instar larva of Stegobium paniceum (L.) was found. A single mite was detected in only one sample.
A total of 156 samples of pasta were analyzed during the period 2009 to 2012 and the mean number of fragments in these samples was 10.1. Mandibles of Sitophilus oryzae (L.) and Tribolium spp. were the most identified filths. Fragments were mainly derived from infestation prior to milling, both in semolina and pasta samples. In fact, fragment size was lower than the granulometry of semolina. Rodent hair was found in few samples
The Dark Side of Projects: Uncovering Slavery, Corruption, Criminal Organizations, and Other Uncomfortable Topics
- …