Reinhard Stoiber, S Fricker, M Jehle, Martin Glinz, Feature unweaving: refactoring software requirements specifications into software product lines, In: RE'10: 18th IEEE International Requirements Engineering Conference., 2010-09-27. (Conference or Workshop Paper published in Proceedings)
The design of the variability of a software product line is crucial to its success and evolution. Meaningful variable features need to be elicited, analyzed, documented and validated when an existing software or reference system evolves into a software product line. These variable features are the main discriminators between individual products and they need to reflect the needs of a large variety of stakeholders adequately. In this paper we present a novel approach, called feature unweaving, that supports the identification and extraction of variable features from a given graphical software requirements model. We have extended our aspect-oriented software product line modeling tool [9] [10] such that it supports feature unweaving: it takes a set of model elements that a domain requirements engineer considers to constitute a variable feature and automatically refactors the model into a semantically equivalent one in which the model elements belonging to this feature are grouped into an aspect. This allows the identification and modeling of variable features in an incremental style. It also substantially reduces both the intellectual and clerical effort required for constructing the variable parts of a software product line requirements model. |
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Martin Glinz, K Ryan, N Maiden, If you want innovative RE, never ask the users; a formal debate, In: 18th IEEE International Requirements Engineering Conference (RE'10), 2010-09-27. (Conference or Workshop Paper)
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Martin Glinz, Very lightweight requirements modeling, In: Requirements Engineering Conference (RE), 2010 18th IEEE International, 2010-09-27. (Conference or Workshop Paper published in Proceedings)
We argue for the creation and use of a very lightweight requirements modeling language as an alternative to textual and pictorial requirements specifications. |
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Reinhard Stoiber, Martin Glinz, Feature unweaving: efficient variability extraction and specification for emerging software product lines, In: 4th International Workshop on Software Product Management (IWSPM'10), 2010-09-27. (Conference or Workshop Paper published in Proceedings)
Successful software products frequently evolve into software product lines, whether intentionally or not. In such cases, product managers have to be involved in creating and specifying the commonality and variability of the evolving software product line in order to continuously assure a winning business case. In this paper we introduce feature unweaving, a novel approach that allows a product manager to efficiently evolve an integrated graphical requirements model into a product line model: when he or she has identified variable elements, feature unweaving automatically extracts these elements and refactors them into a feature, using an aspect-oriented approach. Feature unweaving significantly reduces the required effort for variability specification, both on a clerical and intellectual level. Furthermore, variability constraints can be added to capture more knowledge about the features and their interdependencies. We evaluate and validate our approach with two case studies. |
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Prashant Goswami, Y Zhang, Renato Pajarola, E Gobbetti, High quality interactive rendering of massive point models using multi-way kd-trees, In: Pacific Graphics, 2010-09-25. (Conference or Workshop Paper published in Proceedings)
We present a simple and efficient technique for out-of-core multiresolution construction and high quality visualization of large point datasets. The method introduces a novel hierarchical LOD data organization based on multi-way kd-trees that simplifies memory management and allows controlling the LOD tree’s height. The technique is incorporated in a full end- to-end system, which is evaluated on complex models made of hundreds of millions of points. |
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Dorothée Baumann-Pauly, Andreas Scherer, Anselm Jakob Schneider, Corporate citizenship and corporate governance – compensating for the democratic deficit of corporate political activity, In: 4th International CSR-Conference “CSR Challenges around the Globe”. 2010. (Conference Presentation)
In this paper we address the democratic deficit that emerges when private corporations engage with public policy, either by providing citizenship rights and global public goods (corporate citizenship) or by influencing the political system and lobbying for their economic interests (strategic corporate political activities). This democratic deficit is significant, especially when multinational corporations operate in locations where national governance mechanisms are weak or even fail, where the rule of law is absent and there is a lack of democratic control. This may lead to a decline in the social acceptance of the business firm and its corporate political activities and, thus, to a loss of corporate legitimacy. Under these conditions corporations may compensate the emerging democratic deficit and reestablish their legitimacy by internalizing democratic mechanisms within their organizations, in particular in their corporate governance structures and procedures. We analyze the available corporate governance models with the help of a typology and discuss the possible contributions of a new form of democratic corporate governance. |
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Jürg Syz, Green Buildings in China, In: Immo-Event. 2010. (Conference Presentation)
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Matthias Hert, G Reif, H C Gall, 'Semantic Web 2.0' - write-enabling the Web of Data, In: 6th Workshop on Semantic Web Applications and Perspectives, 2010-09-21. (Conference or Workshop Paper published in Proceedings)
The Semantic Web today is mainly a read-only Web of Data. Many of the data sets that contribute to the Semantic Web are not stored as native RDF, but generated on demand via wrappers. Despite the fact that user contribution is the key success factor in the Web 2.0, current wrapper approaches and standardization efforts still focus on read-only data access. In this paper, we argue that the Semantic Web should learn from the evolution of the Web 2.0 and consider write-enabled semantic data wrappers. |
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Lorenz Hilty, An Introduction to the Relationship between ICT and Sustainable Development, In: 9th Human Choice and Computers International Conference (HCC9) and the WCC 2010 Critical Infrastructure Protection Conference. 2010. (Conference Presentation)
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Jacques Berleur, Magda Hercheui, Lorenz Hilty, What Kind of Information Society? Introduction to the HCC9 Conference Proceedings, In: HCC9 Human Choice and Computers – What Kind of Information Society?, Springer, Berlin Heidelberg New York, 2010. (Conference or Workshop Paper)
The Human Choice and Computers (HCC) conferences organized by the IFIP Technical Committee 9 (TC9) have been important fora for discussing the impact of Information and Communication Technology (ICT) on society, ranging from the way ICT affect our lives at home and at the workplace to the impact that they have in institutions and communities. These conferences have permitted scholars and practitioners to discuss technology from a social perspective: once we understand that artefacts are not neutral, it becomes necessary to explore their economic, political, cultural, and social implications. In this introduction we recount briefly the history of the HCC conferences, in order to contextualise the contribution made by the HCC9 and the papers published in this book, a topic discussed in section 2. |
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Jörg-Uwe Kietz, Floarea Serban, Abraham Bernstein, Simon Fischer, Data mining workflow templates for intelligent discovery assistance and auto-experimentation, In: Proc of the ECML/PKDD'10 Workshop on Third Generation Data Mining: Towards Service-oriented Knowledge Discovery (SoKD'10), 2010-09-20. (Conference or Workshop Paper published in Proceedings)
Knowledge Discovery in Databases (KDD) has grown a lot during the last years. But providing user support for constructing workflows is still problematic. The large number of operators available in current KDD systems makes it difficult for a user to successfully solve her task. Also, workflows can easily reach a huge number of operators(hundreds) and parts of the workflows are applied several times. Therefore, it becomes hard for the user to construct them manually. In addition, workflows are not checked for correctness before execution. Hence, it frequently happens that the execution of the workflow stops with an error after several hours runtime. In this paper we present a solution to these problems. We introduce a knowledge-based representation of Data Mining (DM) workflows as a basis for cooperative interactive planning. Moreover, we discuss workflow templates, i.e. abstract workflows that can mix executable operators and tasks to be refined later into sub-workflows. This new representation helps users to structure and handle workflows, as it constrains the number of operators that need to be considered. Finally, workflows can be grouped in templates which foster re-use further simplifying DM workflow construction. |
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Eya Ben Charrada, Martin Glinz, An automated hint generation approach for supporting the evolution of requirements specifications, In: Joint ERCIM Workshop on Software Evolution (EVOL) and International Workshop on Principles of Software Evolution (IWPSE), 2010-09-20. (Conference or Workshop Paper published in Proceedings)
Updating the requirements specification during software evolution is a manual and expensive task. Therefore, software engineers usually choose to apply modifications directly to the code and leave the requirements unchanged. This leads to the loss of the knowledge contained in the requirements documents and thus limits the evolvability of a software system. In this paper, we propose to employ the co-evolution of the code and its test suite to preserve or restore the alignment between implementation and requirements: when a change has been applied to the code, subsequent changes in the test suite as well as failing tests are analyzed and used to automatically generate hints about the affected requirements and how they should be changed. These hints support the engineer in maintaining the requirements specification and thus ease the further evolution of the software system. |
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Enrico De Giorgi, Thorsten Hens, Marc Oliver Rieger, Financial Market Equilibria with Cumulative Prospect Theory, Journal of Mathematical Economics, Vol. 46 (5), 2010. (Journal Article)
The paper first shows that financial market equilibria need not to exist if agents possess cumulative prospect theory preferences with piecewise-power value functions. This is due to the boundary behavior of the cumulative prospect theory value function, which might cause an infinite short-selling problem. But even when a nonnegativity constraint on final wealth is added, non-existence can occur due to the non-convexity of CPT preferences, which might cause discontinuities in the agents' demand functions. This latter observation also implies that concavification arguments which has been used in portfolio allocation problems with CPT preferences do not apply to our general equilibrium setting with finite many agents. Existence of equilibria is established when non-negativity constraints on final wealth are imposed and there is a continuum of agents in the market. However, if the original prospect theory is used instead of cumulative prospect theory, then other discontinuity problems can cause non-existence of market equilibria even in this case. |
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Lorenz Hilty, Magda Hercheui, ICT and Sustainable Development, In: HCC9 Human Choice and Computers – What Kind of Information Society?, Springer, Berlin Heidelberg New York, 2010. (Conference or Workshop Paper)
We discuss various views and conceptual frameworks put forward in the discussion of ICT and sustainable development: An optimistic and a pessimistic view of ICT with regard to sustainability, the three-pillar approach to sustainable development, the three-level approach to ICT impacts, the claim of human, social and ecological compatibility of ICT and the plain use of ICT for development. We show that each of these approaches has its problems and limitations and conclude with formulating the challenges of finding an analytical approach which will effectively support decision-makers in using ICT in the service of sustainable development. |
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Christopher Wickert, Stephan Schaefer, Towards Critical Performativity in Corporate Social Responsibility Research - A Critically-Reflective Approach to Practice, In: Journal of Management Studies Research Conference. 2010. (Conference Presentation)
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Christopher Wickert, Conceptualising the Role of SMEs as Private Actors in Global Governance, In: Journal of Management Studies Research Conference. 2010. (Conference Presentation)
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Dorothée Baumann-Pauly, Christopher Wickert, Andreas Scherer, Laura Spence, The Role of Private Businesses in Global Governance: Do SMEs Differ from Large MNCs?, In: 4th International Conference on Corporate Social Responsibility. 2010. (Conference Presentation)
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Stefania Lottanti von Mandach, Der optimale Lohn des Geschäftsführers, In: Neue Zürcher Zeitung, 217, p. 79, 18 September 2010. (Newspaper Article)
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Andreas Scherer, Private Self-regulation: Temporal Neoliberal Bubble or Modern Governance?, In: invited contribution to the final roundtable of the conference “The Role of Business in Global Governance”, Concluding Workshop. 2010. (Conference Presentation)
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Daniel Fasnacht, Neuer «Swissness»-Ansatz hilft punkten, In: Handelszeitung, p. 56, 15 September 2010. (Newspaper Article)
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