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81.
The route planning of time-sensitive air-cargo is becoming more important with the growing air-network congestion and delays. We consider a freight forwarder’s routing of a time-sensitive air-cargo in the presence of real-time and historical information regarding flight availability, departure delays and travel times. A departure delay estimation model is developed to account for real-time information inaccuracy. A novel Markov decision model is formulated and solved with online backward induction. Through synthetic experiments and case studies, we demonstrate that dynamic routing with real-time information can improve delivery reliability and reduce expected cost.  相似文献   
82.
任宁 《价值工程》2011,30(32):227-228
大学英语教学的大班化已经成为不可改变的趋势。但在大班课堂教学中,如何开展多维互动已成为制约英语教学效果的主要因素。本文旨在通过调查,强调实施合作学习从而寻找到英语大班授课的多维互动模式,为大班英语教学找出了新的路子。  相似文献   
83.
大科学时代,科技权力与政治权力日益成为对人类社会发展影响深刻和显著的两大权力系统。一方面,科技权力不仅作为生产力的手段推动着经济社会的发展,还推动着政治权力的变革和完善。另一方面,政治权力通过行政的、法律的等手段不同程度地影响和制约着科技权力的发展速度,规定和引导着科技权力的发展方向。认清科技权力和政治权力的二元互动关系,无论对于我国科技权力的发展还是政治权力的进步都具有一定的意义。  相似文献   
84.
A service orientation aims to provide professional and comprehensive service items to consumers in a sale or a non-sale situation, while an interaction orientation has the goal of creating good interaction ability with individual customers in order to maintain long-term, profitable customer relationships, and in the process obtaining valuable information about individual customers. These orientations build customer-centric operations and develop competitive advantages, thus enhancing firm performance and customer value. The main purpose of this study was to examine the relative and collective contributions of different strategic orientations on a firm's performance, with a focus on consumer–company identification. The structural equation model results indicate that (1) both service orientation and interaction orientation positively influence consumer–company identification and (2) interaction orientation results in higher perceived consumer identification.  相似文献   
85.
孟杰  刘艳 《价值工程》2012,31(7):31
为解决工厂长明灯现象,设计了一种声光双控节能电路供楼道照明灯用,其功能:夜间有人上下楼时,照明灯自动点亮,灯亮后延时2~3分钟,会自动熄灭;白天照明灯受人走动的控制,灯不会点亮。整个电路由电源电路,放大电路,处理电路(声控电路、光控电路)及延时电路等部分组成。  相似文献   
86.
We estimate the magnitude of social interaction effects in disability pension participation among older workers in Norway. The problem of omitted variable bias is addressed using the exposure of an individual's neighbors to plant‐downsizing events as an instrument for the disability entry rate among the individual's previously employed neighbors. Our instrumental variable (IV) estimates suggest that an increase of one percentage point in the participation rate of previously employed neighbors increased the subsequent four‐year entry rate of older workers by about 0.4 percentage points. Numerous robustness and specification tests appear to support the validity of the identifying assumption in our IV strategy.  相似文献   
87.
Purpose: In business markets, working with customers and users has become increasingly important to get knowledge about customer needs and to develop new products. The purpose of this article is twofold: (1) to develop a framework for analyzing customer involvement in product development in a business market context, and (2) to apply this framework to a particular company to describe and analyze how it practices customer involvement.

Methodology/approach: The article takes its main theoretical starting point in the industrial network approach, but also uses other literature from the innovation and product development field. The empirical study applies a qualitative case study approach and focuses on one company in the truck business.

Findings: The suggested framework deals with four key aspects of customer involvement: Why, when, how, and who. The observed pattern of the truck manufacturer shows how dealers, hauliers, and truck drivers are all part of the overall understanding of the customer. These actors are involved for different, typically very clear, purposes at different points in time through surveys, product clinics, and field testing. The pattern, referred to as mixed facilitative, is not one of close collaboration with individual customers, but one of broad involvement of several customers through business intelligence and direct involvement.

Research implications: First, the article provides researchers with a framework and method for studying customer involvement in product development. Second, the case study provides an illustrative example of the customer involvement pattern pursued by a leading company in a major industry. This enhances the understanding of the focal phenomenon, leads to managerial implications, and gives ideas for future research.

Practical implications: There are several managerial implications related to the why, when, how, and who questions. For example, it is pointed out that managers should consider involving customers more extensively than what seems to be common today—for example, by using customers as codevelopers, working with them throughout the entire development process (i.e., not only early and late), and including different types of users (with different requirements and wishes).

Originality/value/contribution of the article: The contribution lies in the development of a framework centered on the four key questions of customer involvement in

product development and using this framework for observing a pattern, and finding explanations and relating this pattern to how other firms are doing.  相似文献   
88.
Managers engaged in net-enabled business planning seek metrics to help them analyze the success of their e-business investments. Likewise, researchers require metrics to build analytical models and conduct empirical research on the impact of e-business strategies on firm performance. In this article, the authors develop a comprehensive E-Valuation Framework for identifying net-enabled applications and their resulting user-based functionalities for activities across the value chain. The authors propose that the real value from net-enabled applications can be found in functionality interactions, where one application enables or enhances functionality in another application. The comprehensive framework can be used to generate three types of metrics managers can use to evaluate their net-enabled strategic initiatives. Further, a classification of net-enabled organizations provides the basis for selecting applications critical to a firm's strategic thrusts. We make use of the resource-based view of the firm and real-options analysis to discuss how successful application deployment is based on the resources and assets the firm possesses as well as managing the rollout of an applications portfolio over time. The framework allows managers to map their organization's net-enabled initiatives into a coherent, easily understood visual representation and provides direction for researchers evaluating the efficacy of net-enabled business strategies.  相似文献   
89.
Abstract

Internationalization raises the issue of whether, and to what extent, the inherent culture of a country may have particular influence on the nature of service interactions, and on education (i.e., student-professor interactions) specifically. Thus the service encounter in the classroom becomes a subject of increasing importance and interest with respect to satisfactory and unsatisfactory outcomes, and also with respect to related behavioral outcomes such as word-of-mouth and repatronage. This paper investigates these issues in classrooms of higher education by utilizing the Individualism-Collectivism dimension of culture in four different samples: China, New Zealand, Poland, and the United States. Differences are identified with respect to the types of critical incidents reported, nature of the outcome, and behavioral responses to those encounters.  相似文献   
90.
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