19 research outputs found
Path Dependencies and the Long-term Effects of Routinized Marketing Decisions
The purpose of this paper is to discuss a simulation of marketing budgeting rules that is based on a simplified version of the market share attraction model. The budgeting rules are roughly equivalent to those that may be used in practice. The simulation illustrates the concept of path dependence in dynamic marketing systems and shows how it might result from decision rules potentially applied by marketers and retailers. Path dependence results from positive feedback in dynamic systems that imparts momentum to market choices. Where the potential for path dependence exists, there are implications for defining and measuring long-term effects of marketing decisions in a way that is meaningful to managers and researchers. In the simulations presented we show that limited retails assortment may contribute to path dependence when firms use either percentage-of-revenue rules or "market learning" experiments to set budgets. While other budgeting procedures (e.g., matching competition) may stabilize market share, this stability in the share dimension comes at the cost of instability for budgets and profits.marketing decisions;path dependencies
Path Dependencies and the Long-term Effects of Routinized Marketing Decisions
The purpose of this paper is to discuss a simulation of marketing budgeting rules that is based on a simplified version of the market share attraction model. The budgeting rules are roughly equivalent to those that may be used in practice. The simulation illustrates the concept of path dependence in dynamic marketing systems and shows how it might result from decision rules potentially applied by marketers and retailers. Path dependence results from positive feedback in dynamic systems that imparts momentum to market choices. Where the potential for path dependence exists, there are implications for defining and measuring long-term effects of marketing decisions in a way that is meaningful to managers and researchers. In the simulations presented we show that limited retails assortment may contribute to path dependence when firms use either percentage-of-revenue rules or "market learning" experiments to set budgets. While other budgeting procedures (e.g., matching competition) may stabilize market share, this stability in the share dimension comes at the cost of instability for budgets and profits
Phylogeny and systematics of the genus Calonectria
Species of Calonectria are important plant pathogens, several of
which have a worldwide distribution. Contemporary taxonomic studies on these
fungi have chiefly relied on DNA sequence comparisons of the β-tubulin
gene region. Despite many new species being described, there has been no
phylogenetic synthesis for the group since the last monographic study almost a
decade ago. In the present study, the identity of a large collection of
Calonectria isolates from various geographic regions was determined
using morphological and DNA sequence comparisons. This resulted in the
discovery of seven new species; Ca. densa, Ca. eucalypti,
Ca. humicola, Ca. orientalis, Ca. pini, Ca.
pseudoscoparia and Ca. sulawesiensis, bringing the total number
of currently accepted Calonectria species to 68. A multigene
phylogeny was subsequently constructed for all available Calonectria
spp., employing seven gene regions, namely actin, β-tubulin, calmodulin,
histone H3, the internal transcribed spacer regions 1 and 2 and the 5.8S gene
of the ribosomal RNA, 28S large subunit RNA gene and translation elongation
1-alpha. Based on these data 13 phylogenetic groups could be distinguished
within the genus Calonectria that correlated with morphological
features. Dichotomous and synoptic keys to all Calonectria spp.
currently recognised are also provided
Product availability and market share in an oligopolistic market: the Dutch detergent market
The nonlinear distribution and market share curve as well as the push and pull model developed by Farris et at. (1989) have been investigated in the Dutch detergent market. The total detergent market as well as some of its market segments were studied: the data supported the push and pull model. The data also revealed that the detergent market is characterized by a specific market share configuration: extensions of the top brands quickly gain maximum distribution which might explain their higher market share. Implications for marketing management and marketing theory are discussed