Search results for "Information Systems"
showing 10 items of 1926 documents
Perspectives on Relevance : the Relevance Test in the Constructive Research Approach
2017
Abstract Interventionist research (IVR), such as the constructive research approach (CRA), has been suggested as a method to improve the relevance of management accounting (MA) research. Although literature identifies several perspectives on relevance, the current assessment of CRA focuses on practical relevance. Moreover, an overreliance on pragmatism in assessing CRA research in the form of CRA market tests has been criticized. This article analyses the challenges inherent in conducting and assessing CRA research, both conceptually and with a CRA case example. In order to overcome these possible CRA challenges, we suggest analyzing CRA relevance from multiple perspectives. The perspective…
Together We Stand, Divided We Fall : Analyzing Information Systems Acquisition as Service
2016
Information systems (IS) acquisition is not a widely studied topic in the literature. In particular, although the role and participation of different stakeholders such as business people, IT people, and external vendors and consultants is acknowledged, little is known about how they cooperate in an IS acquisition project. In this paper, we will apply a value co-creation framework taken from service research as a lens to study an IS acquisition project in an organization. The case organization intends to acquire their new IS as a cloud service. This approach is novel to all stakeholders, so they have to intensively cooperate for example under tight time constraints. The analysis reveals that…
Business continuity of business models : Evaluating the resilience of business models for contingencies
2019
Company business models are vulnerable to various contingencies in the business environment that may unexpectedly render their business logic ineffective. In particular, technological advancements, such as the Internet of things, big data, sharing economy and crowdsourcing, have enabled new forms of business models that can effectively and abruptly make traditional business models obsolete. By disrupting or even diminishing companies’ revenue streams, environmental contingencies may present a significant threat to business continuity (BC). Evaluating the resilience of business models against these contingencies should therefore be a core area of BC. However, existing BC approaches tend to f…
Co-Creation of Value for IT-Enabled Services : A Case of Geocaching
2013
This study explores how value is co-created in one particular IT-enabled service, geocaching. Consumer Information Systems (CIS) framework is used as a sensitizing framework to study experienced geocachers' (n=14) perceptions of what they value in geocaching. The following core values emerged that motivate people to co-create value in geocaching: challenging oneself and others, joy of success, learning, and social relations. The results reveal that geocaching is distinctively hedonic in nature, as people pursue happiness and utility via geocaching. Even support for the geocaching community was motivated by such values. In addition, the results reveal that the environment of geocaching and s…
A graph colouring model for assigning a heterogeneous workforce to a given schedule
1996
Abstract We analyze a heterogeneous workforce assignment problem in which the minimum number of workers required to carry out a machine load plan is calculated. The problem is formulated as a restricted vertex colouring problem and a branch and bound algorithm is presented. The special characteristics of the graph to be coloured allow an efficient implementation of the branch and bound. Computational results show that the algorithm can solve problems of 50 activities, 5, 10 and 15 machines and between 2 to 15 different types of workers in just a few seconds.
Prediction of Molecular Volume and Surface of Alkanes by Molecular Topology.
2003
Molecular volume and molecular surface are expressed as a function of topological degree in alkane graphs. This allows not only a straightforward approach to calculate such physicochemical magnitudes but also an interpretation of the role of the local vertex invariant (LOVI) or valence degree, delta, as well as the connectivity indices in the prediction of physicochemical properties. The interpretation is based on the concept of molecular accessibility (as introduced by Estrada, J. Phys. Chem. A 2002, 106, 9085) for which precise mathematical definitions are provided.
The PAPIA system
1991
In 1983 an Italian research program was begun for the design, simulation and construction of a multiprocessor image processing system. After a first phase devoted to the comparison of suggested and existing systems and to the definition of a set of benchmarks, a new system was defined. The structure of this new system is introduced here: it is based on a fine-grained pyramid of processors built up by means of a pyramidal cell implemented on a VLSI multiprocessor chip. The peculiarities and the capabilities of the processing element are highlighted. The complete hardware and software system has been fully designed and is described. A first working prototype has been built and is now operatio…
Discovering Homophily in Online Social Networks
2018
During the last ten years, Online Social Networks (OSNs) have increased their popularity by becoming part of the real life of users. Despite their tremendous widespread, OSNs have introduced several privacy issues as a consequence of the nature of the information involved in these services. Indeed, the huge amount of private information produced by users of current OSNs expose the users to a number of risks. The analysis of the users’ similarity in OSNs is attracting the attention of researchers because of its implications on privacy and social marketing. In particular, the homophily between users could be used to reveal important characteristics that users would like to keep hidden, hence …
Metaverse beyond the hype: Multidisciplinary perspectives on emerging challenges, opportunities, and agenda for research, practice and policy
2022
FNEGE 3, HCERES A, ABS 2; International audience; The metaverse has the potential to extend the physical world using augmented and virtual reality technologies allowing users to seamlessly interact within real and simulated environments using avatars and holograms. Virtual environments and immersive games (such as, Second Life, Fortnite, Roblox and VRChat) have been described as antecedents of the metaverse and offer some insight to the potential socio-economic impact of a fully functional persistent cross platform metaverse. Separating the hype and “meta…” rebranding from current reality is difficult, as “big tech” paints a picture of the transformative nature of the metaverse and how it w…
Task-based visual analytics for interactive multiobjective optimization
2020
We study how visual interaction techniques considered in visual analytics can be utilized when implementing interactive multiobjective optimization methods, where a decision maker iteratively participates in the solution process. We want to benefit from previous research and avoid re-inventing ideas. Our aim is to widen awareness and increase the applicability of interactive methods for solving real-world problems. As a concrete approach, we introduce seven high-level tasks that are relevant for interactive methods. These high-level tasks are based on low-level tasks proposed in the visual analytics literature. In addition, we give an example on how the high-level tasks can be implemented a…