This paper presents an enhanced merit order (EMO) and augmented Lagrange Hopfield network (ALHN) for unit commitment (UC). The EMO method is a merit order based heuristic search for unit scheduling and ALHN is a continuous Hopfield network based on augmented Lagrange relaxation for economic dispatch problem. First, generating units are sorted in ascending average production cost and committed t...

conclusions considering the personal and background characteristics of personnel and understanding their association with stress and stressful situations encompasses the ability to persevere and adapt to contextual stressors. patients and methods in this cross-sectional study, 3643 anonymous questionnaires were disseminated among nurses in different hospitals in tehran, iran, by utilizing multi...

medication errors account for about 78% of serious medical errors in intensive care unit (icu). so far no study has been performed in iran to evaluate all type of possible medication errors in icu. therefore the objective of this study was to reveal the frequency, type and consequences of all type of errors in an icu of a large teaching hospital. the prospective observational study was conducte...

The philosophy of efficient energy consumption is vitally crucial to profitable production cost in manufacturing industries. This is because the unit production cost is largely determined by the cost of unit energy supply; which is quite higher than the cost of raw materials in Nigeria. It has been established that the Nigerian industrial sector is responsible for 8.7% of the total energy consu...

0377-2217/$ see front matter 2012 Elsevier B.V. A http://dx.doi.org/10.1016/j.ejor.2012.09.047 ⇑ Corresponding author. E-mail addresses: [email protected] (K. Hausk Zhuang). 1 In economics, Cobb–Douglas or CES production special assumptions about the functional relations betw proved to be extremely useful for advancing our processes and economic growth. A company allocates a resource between...

agriculture as one of the major economic sectors of iran, has an important role in gross domestic production by providing about 14% of gdp. this study attempts to forecast the value of the agriculture gdp using periodic autoregressive model (par), as the new seasonal time series techniques. to address this aim, the quarterly data were collected from march 1988 to july 1989. the collected data w...

To sustainably contribute to food security of a growing and richer world population, livestock production systems are challenged to increase production levels while reducing environmental impact, being economically viable, and socially responsible. Knowledge about the sustainability performance of current livestock production systems may help to formulate strategies for future systems. Our stud...