Onion thrips (Thrips tabaci Lindeman (Thysanoptera: Thripidae)) can be a pest in organic onion production on Prince Edward Island. This study was to examine the effect of planting time and variety on infestation levels and damage by onion thrips on cabbage (Brassicae oleracea capitala (L.)). A field site was planted with 2 main and 8 lesser varieties of cabbage over 4 planting dates. Some varie...

We present an integrated activity-based discrete choice model system of an individualÕs activity and travel schedule, for forecasting urban passenger travel demand. A prototype demonstrates the system concept using a 1991 Boston travel survey and transportation system level of service data. The model system represents a personÕs choice of activities and associated travel as an activity pattern ...

Technology policy analysis and implementation relies on knowledge and understanding of the " adoption gap " in information technologies among different groups of consumers. Factors that explain the residential " digital divide " also need to be identified and quantified. Through the application of survey data we provide an enhanced understanding of the key factors involved in the choice of resi...

A survey of career choices were conducted for three batches of final year medical students at Universiti Sains Malaysia. A total of 241 students responded, giving a response rate of 76%, with 107 males (44.4%) and 134 females (55.6%). Surgery ranked highest among the male students while obstetrics and gynaecology ranked highest among female students. Internal medicine was the second choice for ...

In this paper, we extend the standard discrete choice modelling framework by allowing for random variation in the substitution patterns between alternatives across respondents, leading to increased model flexibility. The paper shows how such a Mixed Covariance model can be specified either with purely random variation or with a mixture between random and deterministic variation. Additionally, t...

Business processes are usually described by abstract workflow specifications. However, existing workflow descriptions are often too restricted to reflect the true nature of work. For instance tasks might be added or deleted during execution. The presently available workflow management systems insufficiently support the desired flexibility for workflows. In this article we present an approach, h...

Lexico-semantic knowledge of our native language provides an initial foundation for second language learning. In this paper, we investigate whether and to what extent the lexico-semantic models of the native language (L1) are transferred to the second language (L2). Specifically, we focus on the problem of lexical choice and investigate it in the context of three typologically diverse languages...

We put forward a brand choice model with unobserved heterogeneity that concerns responsiveness to marketing efforts. We introduce two latent segments of households. The first segment is assumed to respond to marketing efforts while households in the second segment do not do so. Whether a specific household is a member of the first or the second segment at a specific purchase occasion is describ...

Dematerialization, represented by declining consumption per GDP of energy or of goods, offers some hope for rising environmental quality with development. The declining proportion of income spent on staples as affluence grows, which income elasticity <1.0 measures, makes dematerialization widespread. Further, as learning improves efficiency of resource use, the intensity of environmental impact...