Standaert, Willem; Muylle, Steve; Basu, Amit (2016)
Telepresence is a technology that has emerged as a promising mode for conducting business meetings with distributed participants, since it enables an immersive lifelike experience. However, telepresence meetings are substantially more expensive than audio- and video-conferencing meetings. This paper examines the justification of using telepresence for meetings. Based on an extensive literature review, two research questions about the effectiveness of telepresence for achieving meeting objectives are formulated. These are then addressed in an empirical study consisting of two phases, conducted in a large multinational corporation in which telepresence is widely used. In Phase 1, a list of meeting objectives is compiled. In Phase 2, the effectiveness of telepresence is analyzed relative to audio-conferencing, video-conferencing, and face-to-face for these objectives, based on input from 392 meeting organizers. The results of the analysis indicate that although the effectiveness of telepresence is higher than the effectiveness of audio- and video-conferencing for several meeting objectives, it is not significantly different from the effectiveness of face-to-face for any objective.
Verleye, Katrien; Gemmel, Paul; Rangarajan, Deva (2016)
Purpose: - The purpose of this paper is to empirically test a theoretical model on how different customer engagement behaviors (CEBs), such as giving feedback and helping other customers, affect the role stress-job strain relationship among frontline employees. Design/methodology/approach: - Drawing from the job demands-resources model, this paper hypothesizes that some CEBs weaken the role stress-job strain relationship among frontline employees, whereas the opposite holds for other CEBs. To test these hypotheses, the study involved a survey among 279 frontline employees in 20 nursing home teams in Belgium. Findings: - The results reveal that the impact of role stress on job strain is stronger when frontline employees notice more helping behaviors among customers and weaker when frontline employees receive more customer feedback or notice that customers spread positive word-of-mouth about the nursing home. Originality/value This research contributes to the customer engagement and frontline employee literature by showing that CEBs can act as both job demands and job resources for frontline employees
In this paper, the extended Resource Renting Problem (RRP/extended) is presented. The RRP/extended is a time-constrained project scheduling problem, in which the total project cost is minimised. In the RRP/extended, this total project cost is determined by a number of extra costs, which are defined in this paper. These costs are based on the costs that are used in the traditional Resource Renting Problem and the Total Adjustment Cost Problem. Therefore, the RRP/extended represents a union of these two problems. To solve the RRP/extended, a scatter search is developed. The building blocks of this scatter search are specifically designed for the RRP/extended. We introduce two crossovers and an improvement method. The efficiency of these building blocks will be shown in the paper. Furthermore, a sensitivity analysis is presented in which the five costs have diverse values.
Simulation has played an important role in project-management studies of the last decades, but in order for them to produce practical results, a realistic distribution model for activity durations is indispensable. The construction industry often has needed historical records of project executions, to serve as inputs to the distribution models, but a clearly outlined calibration procedure is not always readily available, nor are their results readily interpretable. This study seeks to illustrate how data from the construction industry can be used to derive realistic input distributions. Therefore, the Parkinson simulation model with a lognormal core is applied to a large empirical dataset from the literature and the results are described. From a discussion of these results, an empirical classification of project executions is presented. Three possible uses are presented for the calibration procedure and the classification in project management simulation studies. These were validated using a case study of a construction company.
When scheduling projects under resource constraints, assumptions are typically made with respect to the resource availability. In resource scheduling problems important assumptions are made with respect to the resource requirements. As projects are typically labour intensive, the underlying (personnel) resource scheduling problems tend to be complex due to different rules and regulations. In this paper, we aim to integrate these two interrelated scheduling problems to minimise the overall cost. For that purpose, we propose an exact algorithm for the project staffing with resource scheduling constraints. Detailed computational experiments are presented to evaluate different branching rules and pruning strategies and to compare the proposed procedure with other optimisation techniques.
In response to diversifying music delivery modes, consumers increasingly combine various music platforms, both online and offline, legal and illegal, and free or paying. Based on survey data (N?=?685), the current study segments consumers in terms of the combination of music delivery modes they use. We identify four latent classes based on their usage frequency of purchasing CDs, copying CDs, streaming music, streaming music videos, peer-to-peer file sharing, and purchased downloading. All-round users (9.9 %) use most or all acquisition modes, but at a low frequency. Traditionalist (33.7 %) typically makes no use of any of the acquisition modes except buying CDs. Streamers-downloaders (20.7 %) use several acquisition modes intensively, especially streaming (video and/or music only) and downloading (legal and illegal). Light users (35.6 %) also use multiple acquisition modes, but less frequently. We draw theoretical and practical implications, discuss limitations, and suggest ideas for future research.
Appelhoff, Daniel; Mauer, René; Collewaert, Veroniek; Brettel, M. (2016)
While prior research has indicated the importance of conflicts between investors and entrepreneurs, little is known about their causes. We use theory on entrepreneurial decision-making to examine the impact of a founding team's causal versus effectual decision style on the level of perceived task conflict that founders experience with their venture capitalists. Based on a sample of 141 German ventures, we find that a founding team perceives fewer conflicts when following the causal principle of overcoming the unexpected and the effectual principle of affordable loss.
Charging schedules of plug-in electric vehicles (PEVs) coordinated by an aggregating agent may increase system efficiency of allocating generation, transmission and distribution resources. Decentralized self-scheduling and local charging control appear to be preferred by vehicle manufacturers and PEV drivers who are simultaneously concerned about the longevity and reliability of their energy storage systems. In such a setting, the aggregator would have to determine energy retail prices as means to indirect load control. This paper proposes a mathematical program with equilibrium constraints optimizing the aggregator's decisions. It endogenously determines the profit-optimal price level subject to the cost minimizing charging schedule of the final customers, who are reacting to a combination of retail price signals and distribution use-of-system network charges. This active response follows an affine demand-price relationship, which is individually parametrized for each vehicle by local information of vehicle characteristics and mobility pattern. The proposed program is applied to two cases: 1) a small case study with 3 vehicles, which highlights the model functionality with detailed hourly information per vehicle, 2) a large-scale fleet of 1000 vehicles provides insights on computational burden. Numerical results indicate that adequate competition in the retail market is necessary to limit the aggregator's monopolistic profitability. Finally, sensitivity runs show dependency on the individual's willingness to pay, the cost of alternative fueling opportunities and minimum state-of-charge requirements.
This study examines how angel investor–entrepreneur task conflicts are related to portfolio company innovativeness and how this relationship is moderated by the level of agreement on priorities, diversity of entrepreneurial experience, and the level of communication. Using survey data gathered from 54 teams of angels and entrepreneurs in Belgium and the United States, we show that the negative relationship between task conflict and innovativeness is more severe when the teams have lower levels of agreement on priorities, when there is less diversity of experience in the team, and when the teams communicate more frequently.
Luypaert, Mathieu; Van Caneghem, Tom; Van Uytbergen, Steve (2016)
This article examines financial statement filing lags among a sample of Belgian small firms. Our results indicate that around one-third of small firm financial statements are filed late (after the legal deadline), but that monetary sanctions could be an effective tool to encourage compliance with legal deadlines. Whereas the deadline and late filing sanctions are filing incentives, various factors, such as firm size and presence of an external financial statement audit, also affect financial statement filing lags. Evidence indicated that extremely late filings were associated with lower financial statement quality.
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