An analogue of Bauer’s theorem for closed orbits of skew products

In this article we prove an analogue of Bauer’s theorem from algebraic number theory in the context of hyperbolic systems

Configurations Driving NPD Performance Fit with Market Demands and Time Constraints

The research reported in this paper is aimed at developing knowledge on organizing NPD systems to optimize their contribution to performance. To this end, a systems approach to fit is used to explain the context-structure-performance relationships for NPD performance, specifically in terms of fit with market demands of the product concept and fit with time constraints of the development process. From a sample of 164 US firms, the top 15 % performers in terms of both fit with market demands and fit with time constraints have been identified. An optimized ‘Ideal Profile’ for the organization of NPD systems, formed by a consistent pattern of: NPD Process, NPD Project Structure and Management, Innovation Climate, and NPD Goal Setting and Portfolio Management, followed from the analysis of the NPD configuration of these top performers. For the calibration sample (the other 85%) significant deviation from the ideal profile on all elements of the configuration was found, the correlations between NPD Performance Fit with Market Demands and Fit with Time Constraints and total Euclidean distance are also significant. Overall, these results provide evidence for the proposition that (1) new product success is a function of a set of NPD development system decisions and (2) to truly understand the impact of those decisions, they must be considered as a holistic system.\ud The contribution of this research is in the empirical validation of the internal consistency of an ideal organizational profile for NPD systems achieving both a high NPD performance in terms of market acceptance of their new products as well in terms of the satisfactory level of the development times of those products. By also examining ideal profiles for each of these NPD performance dimensions separately, the conflicting demands created by multiple performance metrics are highlighted as well as the organizational trade-offs necessary for optimal performance. In terms of managerial implications, this also gives direction for organizational redesign to firms either wanting to maximize their product concept (Fit with Market Demands) or development process (Fit with Time Constraints) performance

Escape rates for Gibbs measures

In this paper we study the asymptotic behaviour of the escape rate of a Gibbs measure supported on a conformal repeller through a small hole. There are additional applications to the convergence of the Hausdorff dimension of the survivor set

Understanding the Costs and Benefits of Deepwater Oil Drilling Regulation

The purpose of this paper is to provide a conceptual framework for understanding how analysis of costs and benefits might be incorporated into an assessment of regulatory policies affecting deepwater drilling. We begin by providing a framework for analyzing the life-cycle impacts of oil drilling and its alternatives, including onshore drilling and importing oil from abroad. We then provide background estimates of the different sources of oil supplied in the United States, look at how other oil supply sources might respond to regulations on deepwater drilling, and consider the economic costs of these regulations. After providing a comprehensive description of the potential costs and benefits from various types of drilling—including, when possible, estimates of the magnitude of these benefits and costs—we discuss the extent to which these costs and benefits may already be taken into account (or reinforced) through the legal, regulatory, and tax systems and through market mechanisms. We conclude by presenting a framework and simple example of how a cost–benefit analysis might be used to inform regulation of deepwater drilling, and sum up the policy implications of our work.catastrophic oil spill, cost-benefit analysis, government regulation, liability

Why e-readers succeeded as a disruptive innovation in the US, but not in Japan

Amazon is part of the answer: in Japan no one offered a large selection of e-books to feed the devices, write Mark E. Parry and Tomoko Kawakam

Information, Promotion, and the Addoption of Innovative Consumer Durables

The diffusion of innovative new products is critically dependent on the transmission of relevant information to potential adopters. Existing research indicates that the relative effectiveness of different communication tools depends on the type of information being communicated. Written and verbal communication tools can be effective when consumers make adoption decisions based on search attributes. However, when adoption depends on experience attributes, marketers must find ways to effectively expose consumers to these attributes. In this paper the authors explore the effectiveness of promotional incentives in motivating consumers to engage in behaviors that should increase their understanding of an innovation's experience attributes. To the authors' knowledge, the research described here is the first published study of the relative effectiveness of different promotional vehicles in stimulating adoption of a consumer durable. The empirical analysis is based on data collected in a real-world experiment involving 614 households. Just over half of these households received a free DVD movie disc as an incentive to participate in the study. The authors assigned the participating households to four treatment groups of 100 households each and a control group of 214 households. The households in the treatment groups received one of four promotional offers that featured some form of a $50 monetary incentive. These promotional offers differed in the degree to which they encouraged behavior that exposed consumers to the experience attributes of a DVD player. After one month the authors surveyed these households again to determine how many purchased a DVD player in the preceding month. An analysis of this experimental data reveals that all four monetary promotions significantly enhanced the probability of adoption. In particular, the average adoption rate among the households receiving one of the monetary incentives was 41%. In contrast, none of the households in the control group reported purchasing a DVD player. Promotions that paid consumers for specific behaviors that precede purchase were no less effective than a coupon that reduces the purchase price by an equivalent amount. In addition, promotions that directly exposed consumers to experience attributes were more effective than promotions that simply provided consumers with the opportunity to learn about experience attributes. Finally, the gift of a free complementary product (a DVD movie) enhanced the effectiveness of three of the four monetary promotions. The authors close with a discussion of managerial implications and directions for future search

Gender Roles/Styles in Crisis: The Experiences of Fathers of Children with Cancer

http://deepblue.lib.umich.edu/bitstream/2027.42/51341/1/577.pd

The case for internalising externalities in a sustainable rail asset base

Although the concept of sustainability and Sustainable development has tended to be mostly associated with the management of natural resources and the consequent environmental impact, the most accepted definition draws together its social, economic and environmental dimensions. The rail industry, as provider of a low carbon transport system, is well placed to have a significant role to play in promoting an environmental, economic and social balance that can be sustained and afforded for the foreseeable future. The paper suggests that a more comprehensive perspective on the scope of a sustainable intervention in rail infrastructure assets is needed, arguing that the necessary whole life evaluation process should include an additional positive externality: the uplift in knowledge, skill and expertise that comes about as a result of participation in projects and programmes. The inclusion of this benefit would provide a more accurate representation of value to support investment decision making and strengthen the case for a broader funding base. And that the demonstration of the correlation between participation in projects and programmes and the consequent uplift in skill, knowledge and expertise could be used to shift the emphasis in rail project planning