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排序方式: 共有6949条查询结果,搜索用时 15 毫秒
21.
Francisco Muñoz Leiva Francisco Javier Montoro Ríos Teodoro Luque Martínez 《Quality and Quantity》2006,40(4):519-537
In the process of coding open-ended questions, the evaluation of interjudge reliability is a critical issue. In this paper,
using real data, the behavior of three coefficients of reliability among coders, Cohen’s K, Krippendorff’s α and Perreault and Leigh’s I
r
are patterned, in terms of the number of judges involved and the categories of answer defined. The outcome underlines the
importance of both variables in the valuations of interjudge reliability, as well as the higher adequacy of Perreault and
Leigh’s I
r
and Krippendorff’s α for marketing and opinion research. 相似文献
22.
23.
This work draws on consumer and psychology research to explain sociocognitive aspects of product-market dynamics at a higher
level of specificity than prior research. The authors extend the field’s understanding of market-shaping shared knowledge
through a theory-informed discussion of how shared product knowledge comes to exist and how it changes as product markets
develop. They define shared knowledge as the aspects of product representations that are common across the minds of market
actors, making it possible for them to understand one another. The authors also discuss ways to track shared knowledge content
that is expressed in market narratives. As the characteristics of shared knowledge are explained and linked to stages of product-market
development, the authors develop a set of researchable propositions to guide future research. The theoretical arguments and
propositions in this article complement extant marketing strategy research by integrating individual-level consumer theory
with market evolution models.
José Antonio Rosa (jose.rosa@case.edu; Ph.D., University of Michigan) is an assistant professor of marketing at Case Western Reserve University.
His research interests include product markets as sociocognitive phenomena, embodied knowledge in consumer and managerial
sensemaking, consumer illiteracy and coping, commitment and motivation among members of network marketing organizations, and
buying group satisfaction. His research has been published in marketing and management publications, including theJournal of Marketing and theAcademy of Management Journal. Before entering academia, he worked in the automotive and information systems industries.
Jelena Spanjol (jspanjol@tamu.edu; Ph.D., University of Illinois) is an assistant professor of marketing at Texas A&M University. Her research
interests include product market dynamics, product portfolio management, innovation, sensemaking, and organizational and managerial
cognition in marketing strategy. Her research has been published in marketing and management publications, including theJournal of Marketing and several book chapters. Before academia, she worked in the scientific software industry. 相似文献
24.
Anthony Bellotti Damiano Brigo Paolo Gambetti Frédéric Vrins 《International Journal of Forecasting》2021,37(1):428-444
We compare the performance of a wide set of regression techniques and machine-learning algorithms for predicting recovery rates on non-performing loans, using a private database from a European debt collection agency. We find that rule-based algorithms such as Cubist, boosted trees, and random forests perform significantly better than other approaches. In addition to loan contract specificities, predictors that refer to the bank recovery process — prior to the portfolio’s sale to a debt collector — are also shown to enhance forecasting performance. These variables, derived from the time series of contacts to defaulted clients and client reimbursements to the bank, help all algorithms better identify debtors with different repayment ability and/or commitment, and in general those with different recovery potential. 相似文献
25.
We analyze the impact of product diversification on performance. This topic has been discussed in the literature, and there
is no consensus so far as to the significance or the direction of the impact. Performance is measured using Tobin's q for
a sample of 103 large, non-financial Spanish firms (1992–1995). Diversification is measured by means of a categorical variable,
as suggested by Varadarajan. The principal results indicate that the firms with intermediate levels of product diversification
have the highest performance, while the firms with low and high levels of diversification show significantly lower performance,
which performance is not significantly different between them. 相似文献
26.
Anne-Sophie Crépin 《Environmental and Resource Economics》2003,26(4):625-646
Recent research in natural sciences shows that the dynamics in boreal forests are much more complex than what many models
traditionally used in forestry economics reflect. This essay analyzes some challenges of accounting for such complexity. It
shows that the optimal harvesting strategy for forest owners is history dependent and for some states of the forest, more
than one strategy may be optimal.This paper confirms earlier literature on shallow lakes and coral reefs and shows that this
kind of phenomena seem much more common than previously thought. They are valid for a wide range of ecosystems that cover
large surfaces and they do not depend on the choice of some specific function to model the non-linearity. There are also indications
that theses results could be obtained even for resources with concave growth if at least one species with non-linear growth
affects their dynamics. 相似文献
27.
28.
Frédéric Lordon 《Journal of Evolutionary Economics》1997,7(1):1-21
The slow and endogenous twist of economic macro-structure makes up an important evolutionary feature of capitalist economies,
and may be at the root of structural crisis. In this line, a Goodwinian growth model with increasing returns and profit-sharing
that tries to picture a simple scenario of the seventies crisis is considered. It is shown that the exhaustion of the Kaldor-Verdoorn
“productivity law” can entail, in a nonlinear framework, a “catastrophic” bifurcation from a “high” to a “low” growth path.
Slow/fast dynamical systems then allow one to formalize a multiple time-scales dynamics where the growth path is shaped by
the structural framework in which it takes place, but has also a long -un feedback. Structural change and crisis appear as
long term and endogenous outcomes. 相似文献
29.
A new framework is presented for the study of the existence and uniqueness of solutions to the Koopmans’ equation in the unbounded
case, that is based on the contraction mapping approach. In the bounded below case with bounded consumption streams, uniqueness
of the solution in the whole class of weak-star continuous utility functions is obtained. When the aggregator is unbounded
below and/or consumption streams are unbounded, existence of a weak-star continuous solution is shown, and a simple criterium
to check the sufficient conditions for existence is provided.
Juan Pablo Rincón-Zapatero and Carlos Rodríguez-Palmero gratefully acknowledge financial support by the Ministerio de Educación y Ciencia and FEDER funds under Research Projects MTM2005-06534 and SEJ2005-08709/ECON, respectively, and by Consejería de Educación de la Junta de Castilla y León under Research Projects VA99/04 and VA017B05, respectively. This paper has substantially benefited from the comments of an
anonymous referee. Particular and special thanks are due to Robert Becker for his very helpful comments and valuable suggestions. 相似文献
30.
This paper presents a model of the interactions between natural resources and physical capital in the evolution of a tourist destination. The projected trajectory of the number of tourists approaches the classical lifecycle pattern. The post-stagnation phase is analyzed within the model, obtaining different patterns which depend on the impacts of physical capital on both demand and environmental degradation. The magnitudes of these impacts are determined by the type of tourism. An empirical application to the case of the tourist industry in the Canary Islands (Spain) is presented, showing that the model can represent the general characteristics of the post-stagnation phase of a tourist destination. 相似文献