The vector bin packing problem (VBP) is a generalization of bin packing with multiple constraints. In this problem we are required to pack items, represented by p-dimensional vectors, into as few bins as possible. The multiple-choice vector bin packing (MVBP) is a variant of the VBP in which bins have several types and items have several incarnations. We present an exact method, based on an arc...

Avenerable supposition of American survey research is that the vast majority of voters have incoherent and unstable preferences about political issues, which in turn have little impact on vote choice. We demonstrate that these findings are manifestations of measurement error associated with individual survey items. First, we show that averaging a large number of survey items on the same broadly...

Promotions are a critical decision for supermarket managers, who must decide the price promotions large number of items. Retailers often use to boost sales different items by leveraging cross-item effects. We formulate promotion optimization problem multiple as nonlinear integer program. Our formulation includes several business rules constraints. demand models can be estimated from data and ca...

proper sequencing of multiple choice test items is a matter of concern for many constructors. in this study we compared the variances of three different pharmacology test formats for nursing students. the aim of the study is to see if changing the order of questions will have any effect on the grades of the students. one way analysis of variance (anova) was used to compare the mean score of the...

Aberrations in eating patterns constitute a substantial public health burden. Computer-based paradigms that measure responses to images of foods are potentially useful tools for assessing food attitudes and characteristics of eating behavior. In particular, food choice tasks attempt to directly probe aspects of individuals' decisions about what to eat. In the Food Choice Task participants rate ...