OBJECTIVE Our goal was to assess the impact of "Baby-Friendly" hospital practices and other maternity-care practices experienced by mothers on breastfeeding duration. METHODS This analysis of the Infant Feeding Practices Study II focused on mothers who initiated breastfeeding and intended prenatally to breastfeed for >2 months, with complete data on all variables (n = 1907). Predictor variabl...

  Selecting an effective project plan is a significant area in the project management. The present paper introduces a technique to identify the project plan efficient frontier for assessing the alternative project plans and selecting the best plan. The efficient frontier includes two criteria: the project cost and the project time. Besides, the paper presents a scheme to incorporate Directed Ac...

OBJECTIVE To examine mortality in a representative nationwide sample of homeless and marginally housed people living in shelters, rooming houses, and hotels. DESIGN Follow-up study. SETTING Canada 1991-2001. PARTICIPANTS 15 100 homeless and marginally housed people enumerated in 1991 census. MAIN OUTCOME MEASURES Age specific and age standardised mortality rates, remaining life expectan...

PURPOSE The aim of the study was to assess the expected and received informative support in lactation in hospitalized lying-in women. Such variables as the number of deliveries and participation in antenatal classes were taken into consideration. MATERIAL AND METHODS The research was conducted from May to September 2005, and involved 202 lying-in women staying in maternity wards in Chair and ...

a vast number of organizational projects as well as complexity of decision making process can cause particular challenges for project management and its leadership. in order to use organization assets and opportunities efficiently, it is necessary that manager implement a comprehensive multidimensional project portfolio management system that considers economic, social and technical details of ...

during pre-project planning as an essential phase of a project, fundamental decisions that lead to project success or failure will make. this phase of a project is more important essentially in oil, gas and petrochemical mega projects that tremendous amount of resources should consume. uncertainty in the initial phases of the project is at the highest level and therefore major project decisions...

Projects scheduling by the project portfolio selection, something that has its own complexity and its flexibility, can create different composition of the project portfolio. An integer programming model is formulated for the project portfolio selection and scheduling.Two heuristic algorithms, genetic algorithm (GA) and simulated annealing (SA), are presented to solve the problem. Results of cal...