| 1. |
- Johannesson, Paul, 1959-, et al.
(författare)
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Design principles for process modelling in enterprise application integration
- 2001
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Ingår i: Information Systems. - : Elsevier Science. - 0306-4379 .- 1873-6076. ; 26:3, s. 165-184
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Tidskriftsartikel (refereegranskat)abstract
- There is a growing need for Enterprise Application Integration (EAI) technologies, which align the applications of an organisation to its business processes. Such technologies require an adequate methodological support so that well structured and easily understandable models can be constructed. In this paper, such a methodological support is proposed by introducing principles for the design, validation and presentation of process models and associated data models. By applying these principles, we obtain different views of the models, and thereby facilitate the use of common models for different stakeholders, e.g. business managers, designers and operators.
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| 2. |
- Franke, Ulrik, et al.
(författare)
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Characterization of trade-off preferences between non-functional properties
- 2018
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Ingår i: Information Systems. - : Elsevier BV. - 0306-4379 .- 1873-6076. ; 74, s. 86-102
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Tidskriftsartikel (refereegranskat)abstract
- Efficient design and evolution of complex software intensive systems rely on the ability to make informed decisions as early as possible in the life cycle. Such informed decisions should take both the intended functional and non-functional properties into account. Especially regarding the latter, it is both necessary to be able to predict properties and to prioritize them according to well-defined criteria. In this paper we focus on the latter problem, that is to say how to make trade-offs between non-functional properties of software intensive systems. We provide an approach based on the elicitation of utility functions from stake-holders and subsequent checks for consistency among these functions. The approach is exploitable through an easy-to-use GUI, which is also presented. Moreover, we describe the setup and the outcome of our two-fold validation based on exploratory elicitations with students and practitioners
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| 3. |
- Huber, Stefan, et al.
(författare)
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A comparative study on the energy consumption of Progressive Web Apps
- 2022
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Ingår i: Information Systems. - : Elsevier Ltd. - 0306-4379 .- 1873-6076. ; 108
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Tidskriftsartikel (refereegranskat)abstract
- Progressive Web Apps (PWAs) are a promising approach for developing mobile apps, especially when developing apps for multiple mobile systems. As mobile devices are limited with respect to battery capacity, developers should keep the energy footprint of a mobile app as low as possible. The goal of this study is to analyze the difference in energy consumption of PWAs compared to other mobile development approaches. As mobile apps are primarily interactive in nature, we focus on UI rendering and interaction scenarios. For this, we implemented five versions of the same app with different development approaches and examined their energy footprint on two Android devices with four execution scenarios. Additionally, we extended our research by analyzing multiple real-world mobile apps to include a more practical perspective. Regarding execution environments, we also compared the energy consumption of PWAs executed in different web-browsers. The results based on sample and real-world apps show that the used development approach influences the energy footprint of a mobile app. Native development shows the lowest energy consumption. PWAs, albeit having a higher energy consumption than native apps, are a viable alternative to other mobile cross-platform development (MCPD) approaches. The experiments could not assert an inherent technological disadvantage of PWAs in contrast to other MCPD approaches when considering UI energy consumption. Moreover, the web-browser engine used to execute the PWA has a significant influence on the energy footprint of the app. © 2022 Elsevier Ltd
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| 4. |
- Lagerström, Robert, 1981-, et al.
(författare)
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Preface to the EDOC 2017/2018 Special Issue
- 2021
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Ingår i: Information Systems. - : Elsevier BV. - 0306-4379 .- 1873-6076. ; 101, s. 101802-
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Tidskriftsartikel (övrigt vetenskapligt/konstnärligt)
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| 5. |
- Pop, P., et al.
(författare)
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The FORA Fog Computing Platform for Industrial IoT
- 2021
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Ingår i: Information Systems. - : Elsevier Ltd. - 0306-4379 .- 1873-6076. ; 98
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Tidskriftsartikel (refereegranskat)abstract
- Industry 4.0 will only become a reality through the convergence of Operational and Information Technologies (OT & IT), which use different computation and communication technologies. Cloud Computing cannot be used for OT involving industrial applications, since it cannot guarantee stringent non-functional requirements, e.g., dependability, trustworthiness and timeliness. Instead, a new computing paradigm, called Fog Computing, is envisioned as an architectural means to realize the IT/OT convergence. In this paper we propose a Fog Computing Platform (FCP) reference architecture targeting Industrial IoT applications. The FCP is based on: deterministic virtualization that reduces the effort required for safety and security assurance; middleware for supporting both critical control and dynamic Fog applications; deterministic networking and interoperability, using open standards such as IEEE 802.1 Time-Sensitive Networking (TSN) and OPC Unified Architecture (OPC UA); mechanisms for resource management and orchestration; and services for security, fault tolerance and distributed machine learning. We propose a methodology for the definition and the evaluation of the reference architecture. We use the Architecture Analysis Design Language (AADL) to model the FCP reference architecture, and a set of industrial use cases to evaluate its suitability for the Industrial IoT area.
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| 6. |
- Ralyté, Jolita, et al.
(författare)
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A knowledge-based approach to manage information systems interoperability
- 2008
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Ingår i: Information Systems. - : Elsevier B.V.. - 0306-4379 .- 1873-6076. ; 33:7-8, s. 754-784
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Tidskriftsartikel (refereegranskat)abstract
- Interoperability is a key property of enterprise applications, which is hard to achieve due to the large number of interoperating components and semantic heterogeneity. The inherent complexity of interoperability problems implies that there exists no silver bullet to solve them. Rather, the knowledge about how to solve wicked interoperability problems is hidden in the application cases that expose those problems. The paper addresses the question of how to organise and use method knowledge to resolve interoperability problems. We propose the structure of a knowledge-based system that can deliver situation-specific solutions, called method chunks. Situational Method Engineering promotes modularisation and formalisation of method knowledge in the form of reusable method chunks, which can be combined to compose a situation-specific method. The method chunks are stored in a method chunk repository. In order to cater for management and retrieval, we introduce an Interoperability Classification Framework, which is used to classify and tag method chunks and to assess the project situation in which they are to be used. The classification framework incorporates technical as well as business and organisational aspects of interoperability. This is an important feature as interoperability problems typically are multifaceted spanning multiple aspects. We have applied the approach to analyse an industry case from the insurance sector to identify and classify a set of method chunks.
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| 7. |
- Rao, J. H., et al.
(författare)
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Composition of semantic web services using linear logic theorem proving
- 2006
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Ingår i: Information Systems. - : Elsevier BV. - 0306-4379 .- 1873-6076. ; 31:05-4, s. 340-360
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Tidskriftsartikel (refereegranskat)abstract
- This paper introduces a method for automatic composition of Semantic Web services using Linear Logic (LL) theorem proving. The method uses a Semantic Web service language (DAML-S) for external presentation of Web services, while, internally, the services are presented by extralogical axioms and proofs in LL. LL, as a resource conscious logic, enables us to capture the concurrent features of Web services formally (including parameters, states and non-functional attributes). We use a process calculus to present the process model of the composite service. The process calculus is attached to the LL inference rules in the style of type theory. Thus, the process model for a composite service can be generated directly from the complete proof. We introduce a set of subtyping rules that defines a valid dataflow for composite services. The subtyping rules that are used for semantic reasoning are presented with LL inference figures. We propose a system architecture where the DAML-S Translator, LL Theorem Prover and Semantic Reasoner can operate together. This architecture has been implemented in Java.
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| 8. |
- Sari, Anny Kartika, et al.
(författare)
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An approach for sub-ontology evolution in a distributed health care enterprise
- 2013
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Ingår i: Information Systems. - : Elsevier. - 0306-4379 .- 1873-6076. ; 38:5, s. 727-744
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Tidskriftsartikel (refereegranskat)abstract
- In response to the changing nature of health issues, standardized health ontologies such as SNOMED CT and UMLS incline to change more frequently than most other domain ontologies. Yet, semantic interoperability shared among institutions within a distributed health care enterprise relies heavily on the availability of a valid and up-to-date standardized ontology. In this paper, we propose the creation and preservation of sub-ontologies to deal with the frequent changes in health ontologies. Our approach focuses on the nature and characteristics of standard health ontologies, however it can also be applied to other domain ontologies with similar characteristics. Our sub-ontology evolution approach defines ways to create valid sub-ontologies for each specific health application, and to effectively develop a series of propagation mechanism when the main ontology changes. Our approach will (i) isolate the required change propagation to the relevant health applications that utilized the changing concepts only, and (ii) optimize the propagation mechanism to include the minimum number of operations only. Since a sub-ontology should be a valid ontology by itself, the change propagation approach used in this process should contain the rules to assure the validity of the produced sub-ontology while keeping the consistency of the sub-ontology to the evolved base ontology. A change identification process, which considers the nature of the health ontology change logs, is conducted to identify the semantics of the changes. From the evaluation, it is shown that the content of the evolved sub-ontologies produced using our approach is consistent to the evolved base ontology. Moreover, the propagation process can be performed more efficiently because the number of operations required for our change propagation method is lower than the number of operations required for direct re-extraction from the evolved base ontology.
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| 9. |
- Zdravkovic, Jelena, et al.
(författare)
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Preface to CAISE 2015
- 2016
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Ingår i: Information Systems. - : Elsevier BV. - 0306-4379 .- 1873-6076. ; 62, s. 169-169
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Tidskriftsartikel (övrigt vetenskapligt/konstnärligt)
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| 10. |
- Gustas, Remigijus, 1996-
(författare)
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Defining visions in context : Models, processes and tools for requirements engineering
- 1996
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Ingår i: Information Systems. - UK : Elsevier Science. - 0306-4379. ; 21:6, s. 515-547
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Tidskriftsartikel (refereegranskat)abstract
- Requirements Engineering is an ill-defined, but growing area of research which addresses a critical problem, that of designing the right thing. This paper reports research on the ESPRIT project NATURE (Novel Theories Underlying Requirements Engineering). A framework for RE research is introduced which covers overall conceptions of the modelling and process views of requirements engineering. Within this framework, current modelling techniques can be reused but are augmented by generic models supporting the reuse of domain knowledge for requirements analysis and validation, and by an enterprise modelling structure emphasising the role of user objectives in requirements engineering. The basic understanding of RE as establishing visions in context leads into the NATURE process model that formalises RE activities as freely composable process chunks linked to contexts. The process model is then used to develop roadmaps of pathways for RE activities within the enterprise model structure. This structure also requires a broader definition of viewpoints and their resolution in the RE process. The last part of the paper presents the NATURE Computer Aided Requirements Engineering (CARE) environment, integrated via the ConceptBase repository. It comprises tools for viewpoint and repository management, process guidance, traceability support, and matching tools for reuse, viewpoint integration and validation using similarity and analogical reasoning mechanisms. The tools section also reports critiquing and validation facilities, and schema integration tools. The paper concludes with a review of related work in conceptual modelling and other aspects of Requirements Engineering.
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