Robust Multi-criteria Service Composition in Information Systems

Service compositions are used to implement business processes in a variety of application domains. A quality of service (QoS)-aware selection of the service to be composed involves multiple, usually conflicting and possibly uncertain QoS attributes. A multi-criteria solution approach is desired to generate a set of alternative service selections. In addition, the uncertainty of QoS-attributes is neglected in existing solution approaches. Hence, the need for service reconfigurations is imposed to avoid the violation of QoS restrictions. The researched problem is NP-hard. This article presents a heuristic multi-criteria service selection approach that is designed to determine a Pareto frontier of alternative service selections in a reasonable amount of time. Taking into account the uncertainty of response times, the obtained service selections are robust with respect to the constrained execution time. The proposed solution approach is based on the Non-dominated Sorting Genetic Algorithm (NSGA)-II extended by heuristics that exploit problem specific characteristics of the QoS-aware service selection. The applicability of the solution approach is demonstrated by a simulation study.     

Concurrent Ownership of Brands and Counterfeits: Conceptualization and Temporal Transformation from a Consumer Perspective

The aim of this paper is to shed light on consumers’ concurrent ownership of original and counterfeit versions of a brand, a phenomenon that is lively in the global market place but has thus far failed to attract adequate research attention. Using findings from eight focus group discussions, this paper investigates the relationships consumers have with brands and counterfeits when they own both at the same time, based on different object‐, self‐, and other‐centered engagements. Subsequently, three distinct consumer segments were identified that vary in their relationship trajectories over time. Along three established phases, a decline in purchasing of counterfeits can be observed; between Phases 1 and 2, this is due largely to negative emotional aspects, while making the transition to Phase 3 is always induced by a conflict with the social self. In all three segments the gap between the perceived and ideal social self widens, yet, once again, there are differences in the coping strategies.     

PORTFOLIO LIQUIDATION IN DARK POOLS IN CONTINUOUS TIME

We consider an illiquid financial market where a risk averse investor has to liquidate a portfolio within a finite time horizon [0, T] and can trade continuously at a traditional exchange (the “primary venue”) and in a dark pool. At the primary venue, trading yields a linear price impact. In the dark pool, no price impact costs arise but order execution is uncertain, modeled by a multidimensional Poisson process. We characterize the costs of trading by a linear‐quadratic functional which incorporates both the price impact costs of trading at the primary exchange and the market risk of the position. The solution of the cost minimization problem is characterized by a matrix differential equation with singular boundary condition; by means of stochastic control theory, we provide a verification argument. If a single‐asset position is to be liquidated, the investor slowly trades out of her position at the primary venue, with the remainder being placed in the dark pool at any point in time. For multi‐asset liquidations this is generally not the case; for example, it can be optimal to oversize orders in the dark pool in order to turn a poorly balanced portfolio into a portfolio bearing less risk.     

Analysis of the mechanism of injury in non-fatal vehicle-to-pedestrian and vehicle-to-bicyclist frontal crashes in Sweden

The aim of this paper is to analyse and compare injuries and injury sources in pedestrian and bicyclist non-fatal real-life frontal passengercar crashes, considering in what way pedestrian injury mitigation systems also might be adequate for bicyclists. Data from 203 non-fatal vehicle-to-pedestrian and vehicle-to-bicyclist crashes from 1997 through 2006 in a city in northern Sweden were analysed by use of the hospitals injury data base in addition to interviews with the injured. In vehicle-to-pedestrian crashes (n = 103) head and neck injuries were in general due to hitting the windscreen frame, while in vehicle-to-bicycle crashes (n = 100) head and neck injuries were typically sustained by ground impact. Abdominal, pelvic and thoracic injuries in pedestrians and thoracic injuries in bicyclists were in general caused by impacting the bonnet. In vehicle-to-pedestrian crashes, energy reducing airbags at critical impact points with low yielding ability on the car, as the bonnet and the windscreen frame, might reduce injuries. As vehicle-to-bicyclist crashes occurred mostly in good lighting conditions and visibility and the ground impact causing almost four times as many injuries as an impact to the different regions of the car, crash avoidance systems as well as separating bicyclists from motor traffic, may contribute to mitigate these injuries.     

Managing conflicting goals in pig farming: farmers' strategies and perspectives on sustainable pig farming in Sweden

Industrial meat production has several negative environmental effects. Governments’ agricultural policies aim for cost efficiency combined with high environmental and animal welfare, which puts farmers in a difficult situation trying to navigate between sometimes contradictory requirements. This paper studies how Swedish pig farmers resolve or cope with conflicting goals in pig farming. We have analysed the regulations governing EU and Swedish pig farming. We have also interviewed five Swedish pig farmers about their views of the different goals of pig farming and strategies for resolving conflicts between the goals of low environmental impact, high animal welfare and enough profitability to continue farming. The greatest divide was between the conventional farmers, who emphasized natural resource efficiency, and the organic farmers who stressed animal welfare, multifunctionality and ecosystem service delivery. We suggest four strategies to contribute to resolving some of the conflicting goals: improve communication about different types of pig farming; use public procurement as a driver towards more sustainable pork production; work towards improving the Common Agricultural Policy, perhaps by implementing payments for ecosystem services or multifunctionality; and finally, decrease the total production of pork to lower the emissions per land unit.     

Reversed servitization paths: a case analysis of two manufacturers

The literature on service business in manufacturing companies posits that manufacturers “servitize” by increasing the proportion of services offered. This study presents two paths that are contrary to such forward-unidirectional servitization, indicating “reversed servitization.” In the first case, a capital goods manufacturer lost visibility to its installed base due to evolving product technology. We use the case of photocopier manufacturer Xerox to support our findings; a regulation change forced Xerox to move from a service-based toward a product-based business model. We thus propose that influencing environmental factors need to be researched and that the literature of organizational ecology may serve as a complementary perspective.     

The evolution of service innovation research: a critical review and synthesis

The number of service innovation articles has increased dramatically in the past 25 years. By reviewing 128 articles published between 1986 and 2010, primarily in leading marketing and innovation journals, this study analyzes the progression of service innovation research according to topicality and perspective. The authors summarize prior research by clustering it into three evolutional phases and drawing parallels with the evolution of the wider services marketing field. Overall, the view of service innovation has evolved, from a complement of traditional product innovation to a multidimensional, all-encompassing notion that entails several functions, both within and outside the firm.     

The Conceptualization of Nonprofit Marketing Orientation: A Critical Reflection and Contributions Toward Closing the Practice–Theory Gap

In this article three generations of research addressing the marketing construct in nonprofit organizations are critically analyzed: (a) market orientation in nonprofit organizations, (b) societal orientation, and (c) research contributions aiming to close the existing practice–theory gap on this topic. A qualitative study among 24 nonprofit marketers is conducted in Canada and Germany to develop a construct labeled nonprofit marketing orientation. It includes the dimensions of brand orientation, supporters’ orientation, commercial orientation, and service orientation. Furthermore, the authors describe the nomological net of nonprofit marketing orientation to present interconstruct relationships and to inform future research.     

Advertising and Economic Development

In this article it is argued that West Germany has developed into the largest advertising market with the highest productivity per employee in Western Europe. We observe a continuous increase of net advertising turnover during the 1970s. Some extraordinary characteristics of the German advertising market (such as the structure of the TV advertising market and the printed media industry), which set it into sharp contrast to other European advertising markets, are discussed. Furthermore, we analyse the relationship between advertising and the business cycle movement (procyclical v. anticyclical advertising strategies) and we find that the majority of German business firms still pursue a procyclical advertising strategy although evidence seems to prove that an anticyclical advertising policy adopted during recessions will result in higher market shares and strengthened market positions of advertised brands.     

Relationship Quality—Relationship Value and Power Balance in Business Relationships: Descriptives and Propositions

Purpose: The objective of this study is to develop understanding of the interplay between the perceptions of power balance, relationship value, and relationship quality between retail distributors and their suppliers.

Methodology: The authors applied a phenomenological approach in both qualitative and quantitative data collections and analyses. Key informants in 27 of the dominant retail distributors within 5 Norwegian industries and 50 of their most important suppliers were interviewed.

Findings: The power balance seems to favor the retail distributors. Retail distributors and suppliers tell of somewhat different characteristics pertaining to “best” and “worst” relationships relating to economic-, capability-, and integration-based values as perceived between retail distributors and their suppliers.

Research limitations/implications: The empirical findings indicate the complexity in assessing relationship quality and show a rich basis for further research, thereby contributing to knowledge and insights in characterizing relationship quality when power is asymmetrically distributed between distributors and their suppliers. However, personal interviews may reveal answers at rational, cognitive, and even emotional levels, thus complicating subjective analysis.

Practical implications: The results of the study are important for both researchers and practitioners on both sides of retail distributor–supplier relationships.

Originality/value: This study advances the work on what characterizes relationship quality in asymmetric power business relationships.