In this paper we investigate and compare multi-objective and weighted single objective approaches to a real world workforce scheduling problem. For this difficult problem we consider the trade off in solution quality versus population diversity, for different sets of fixed objective weights. Our real-world workforce scheduling problem consists of assigning resources with the appropriate skills ...

While solution methods are well-known for optimization problems with a single objective function, there are many common real world scenarios in which a single function does not suffice. Multiobjective or multicriteria optimization is the branch of optimization that deals with the case of two or more objective functions. An important example is the biobjective problem that arises in portfolio op...

In this paper, the effects of uncertainty on multiple-objective linear programming models are studied using the concepts of fuzzy set theory. The proposed interactive decision support system is based on the interactive exploration of the weight space. The comparative analysis of indifference regions on the various weight spaces (which vary according to intervals of values of the satisfaction de...

BACKGROUND Estimates of energy intake (EI) in humans have limited validity. OBJECTIVE The objective was to test the accuracy and precision of the intake-balance method to estimate EI during weight gain induced by overfeeding. DESIGN In 2 studies of controlled overfeeding (1 inpatient study and 1 outpatient study), baseline energy requirements were determined by a doubly labeled water study ...

The aim of the presented study is to optimize different classes high-temperature superconducting (HTS) DC cables for improving their performances in a cryo-electric aircraft considering weight, peak temperature during faults, and ratio current passing through each tape critical HTS tapes. These terms were interpreted into three objective functions, multi-objective optimization algorithm known a...

BACKGROUND Receiving information about one's weight, Body Mass Index (BMI) and other indicators of health risk may prompt behaviour change. This study investigated men's reactions to receiving information on indicators of health risk prior to taking part in a men-only weight management programme, Football Fans in Training (FFIT). It also investigated the extent to which the information was repo...