Analyzing the impact of intermodal-related risk to the design and management of biofuel supply chain

This study presents a mathematical model that designs a reliable multi-modal transportation network for a biofuel supply chain system, where intermodal hubs are subject to site-dependent probabilistic disruptions. The disruption probabilities of intermodal hubs are estimated by using a probabilistic model which is developed using real world data. We developed an accelerated Benders decomposition algorithm to solve this challenging NP-hard problem. Numerical analysis show that the model selects to use intermodal hubs located in areas with low disruption probabilities. In case of a disaster, the reliable solution results in 6.21% savings over the minimum cost solution.     

IOS移动平台互动绘本的设计

绘本随着计算机软硬件的发展和无线网络技术的进步，正由纸质图书形式向数字化屏式过渡，其自身可以根据故事的画面与技术手段相结合，从而产生新的绘本形态---互动绘本。在这种应用背景的推动下，指出纸质绘本的优缺点，调查分析IOS移动平台互动绘本发展的前景与优势，从研究互动绘本的设计特征着手，探讨互动绘本设计在数字技术支撑下的设计要素与设计方法，可对互动绘本的设计与发展有所借鉴，并实现其艺术价值与市场应用价值。     

腾讯群在设计软件课教学中的应用——以《Rhino》课为例

腾讯群在大学生群体中的使用十分广泛,如何以此为依托拓展其在教学中的应用具有较高的现实意义.在总结了设计软件课教学特点的基础上,指出腾讯群各功能模块在设计软件课的教学中具有较高的应用价值,在课前预习、资源共享、作业布置、课后交流、作业提交以及作业评定环节均能深度契合,并以《RHINO》软件课的教学为例,具体阐述了腾讯群各功能在该软件教学流程中的应用.     

The logo matters: the effect of the logo type on the attitude towards co-products

ABSTRACT

This study investigates the effect of the type of logo used to promote co-products. In the case of an added logo, the logos of the constituent brands are lined up next to each other. An integrative logo is composed of the elements of both original brand logos. A novel logo does not contain any elements of the original brand logos. We found that the use of an integrative logo results in more favourable perceptions of brand cooperation, higher perceptions of co-product quality, more positive feelings and a more favourable attitude towards the co-product compared to the use of an added or novel logo. For a novel logo of co-products, consumers reported feelings of irritation and frustration and a less favourable attitude compared to an added logo.     

集群企业间知识溢出、研发竞争与集群主导设计形成的关系

考察了产业集群企业间的研发竞争和知识溢出对集群企业采纳潜在主导设计的影响。通过数理分析和实证检验,得到如下结论:集群企业间的研发竞争有利于主导设计的形成;集群企业间的知识溢出对主导设计的形成也有正向影响;企业间的研发竞争正向调节知识溢出与主导设计形成的关系。     

A one-sided many-to-many matching problem

This study discusses a one-sided many-to-many matching model wherein agents may not be divided into two disjoint sets. Moreover, each agent is allowed to have multiple partnerships in our model. We restrict our attention to the case where the preference of each agent is single-peaked over: (i) the total number of partnerships with all other agents, and (ii) the number of partnerships that the agent has with each of the other agents. We represent a matching as a multigraph, and characterize a matching that is stable and constrained efficient. Finally, we show that any direct mechanism for selecting a stable and constrained efficient matching is not strategy-proof.     

The impact of IT-enabled customer service systems on service personalization,customer service perceptions,and hotel performance

Customer service is a critical element of a hotel's strategy and an important lever for differentiation of the hotel's offer. Over the last two decades, information systems have contributed to the transformation of customer interactions, enabling an unprecedented scale and scope of service personalization in the tourism industry. This paper reports the results of a mixed method study in a hotel that offers three contributions to the development and refinement of IT-enabled service personalization theory. It explores the role of signifiers in the design of customer service systems, showing that they significantly increase customer preference elicitation during the learning phase of the service personalization process. It then demonstrates that improved preference elicitation translates into higher customer service evaluations and value perceptions of the hotel. Finally, our study shows that IT-enabled service personalization creates financial benefits for the hotel via revenue share-shift from costly intermediated to direct distribution channels.     

Designing successful temporary loyalty programs: An exploratory study on retailer and country differences

Retailers increasingly adopt temporary loyalty programs (TLPs), in which consumers have limited time, often less than half a year, to save stamps and redeem highly discounted rewards. These programs often run alongside the retailers’ permanent loyalty programs in an attempt to increase customer engagement. Despite the growing popularity of TLPs, the literature on the topic remains limited. We address this gap by looking at the redemption rate, the industry’s primary success indicator, of almost 900 TLPs across a broad set of grocery retailers in 45 countries. We study the effects of four key design characteristics (the duration of the program, the discount offered, the spending requirement before an award can be redeemed, and the reward depth) on the redemption rate, and explore how these effects vary across a broad range of retailer and country characteristics. In doing so, we control for both a retailer’s potential self-selection into running a TLP and the potential endogeneity of the subsequent design choices. We derive a set of actionable results on how to design successful TLPs and show that high redemption rates are not only beneficial for the program operator and reward manufacturer, but also translate into higher sales and profit for the retailer.     

A two-dimensional problem of revenue maximization

We consider the problem of finding the mechanism that maximizes the revenue of a seller of multiple objects. This problem turns out to be significantly more complex than the case where there is only a single object (which was solved by Myerson, 1981). The analysis is difficult even in the simplest case studied here, where there are two exclusive objects and a single buyer, with valuations uniformly distributed on triangular domains. We show that the optimal mechanisms are piecewise linear with either 2 or 3 pieces, and obtain explicit formulas for most cases of interest.     

全货运航空公司单分配严格枢纽航线网络优化设计

针对全货运航空公司，研究其货运航线网络的构建问题。基于单分配严格枢纽航线网络，对传统模型进行改进。以各航线上货物的委托运输成本和自有机队的运输成本，取代传统的单位运输成本和折扣因子，考虑枢纽点的中转成本和载运率对路径选择的影响。结合航空货运夜航的特征考虑各机队夜间可用时间的限制，以总成本最小为目标，构建数学模型，采用LINGO优化软件求解，验证模型的有效性，为全货运航空公司构建货运航线网络提供参考。