Criteria of progress for information systems design theories

According to Kuhn, science and progress are strongly interrelated. In this paper, we define criteria of progress for design theories. A broad analysis of the literature on information systems design science reveals that there is no consensus on the criteria of progress for design theories. We therefore analyze different concepts of progress for natural science theories. Based on well-founded criteria stemming from the philosophy of science and referring to natural science theories, we develop a set of criteria of progress for design theories. In summary, our analysis results in six criteria of progress for design theories: A design theory is partially progressive compared to another if it is ceteris paribus (1) more useful, (2) internally more consistent, (3) externally more consistent, (4) more general, (5) simpler, or (6) more fruitful of further research. Although the measurement of these criteria is not the focus of this paper, the problem of measurement cannot be totally neglected. We therefore discuss different methods for measuring the criteria based on different concepts of truth: the correspondence theory of truth, the coherence theory of truth, and the consensus theory of truth. We finally show the applicability of the criteria with an exampl

Multivariate Copula Models at Work: Outperforming the desert island copula?

Since the pioneering work of Embrechts and co-authors in 1999, copula models enjoy steadily increasing popularity in finance. Whereas copulas are well-studied in the bivariate case, the higher-dimensional case still offers several open issues and it is by far not clear how to construct copulas which sufficiently capture the characteristics of financial returns. For this reason, elliptical copulas (i.e. Gaussian and Student-t copula) still dominate both empirical and practical applications. On the other hand, several attractive construction schemes appeared in the recent literature prom sing flexible but still manageable dependence models. The aim of this work is to empirically investigate whether these models are really capable to outperform its benchmark, i.e. the Student-t copula (which is termed by Paul Embrechts as "desert island copula" on account of its excellent fit to financial returns) and, in addition, to compare the fit of these different copula classes among themselves. --KS-copula,Hierarchical Archimedian,Product copulas,Pair-copula decomposition

Panel: A call for action in tackling environmental sustainability through green information technologies and systems

In parallel to widely accepted behavioural research, Design Research (DR) has emerged in Information Systems. Nonetheless, the debate about the scientificity of DR is still ongoing. In the course of this debate, the role of scientific progress has hardly been discussed. But, doubtlessly, scientific progress is regarded as one of the main aims of science; science can even be defined by scientific progress. Philosophy of science has therefore developed a variety of concepts for scientific progress mostly adapted to explanatory and/or predictive theories. Nonetheless, the output of DR differs from those theories; therefore, concepts developed cannot be applied to DR without further ado. In this paper, we propose a first concept for scientific progress of DR artefacts. Because of the complexity of the field we firstly restrict to the research question: What is scientific progress of DR artefacts? Progress is commonly defined as a transition from step A to B whereby B is “better” than A. The aim of our research is to identify criteria for concretizing what is “better” in the context of DR and to define criteria of progressive DR artefacts. We thereby identified the following five criteria: utility, internal consistency, external consistency, scope, and efficiency

Floating solar panel park

Treball desenvolupat dins el marc del programa 'European Project Semester'.This Final Report is the culmination of a four month long design study on floating solar panel park feasibility in Vaasa, Finland. The Floating Ideas Team was tasked with coming up with a design that would not only work, but also make a profit. The team focused a lot of time on initial research, an iterative design process, and experiments to gather information that could not be found during the research phase. In this report, one can expect to find the major findings from research in many different areas such as location, panel design, flotation design, cooling techniques, and efficiency adding techniques. The first takeaway is that implementing floating solar parks in Finland would require adding efficiency techniques such as mirrors or concentrators. Second, how the panels are placed means a lot in a location so far north. Placing the panels far away from each other and horizontally will reduce the negative impact of shadows. And third, the rotation of the structure is important in increasing efficiency. Multiple axis tracking is not necessary, but tracking in the vertical axis can add a 50% increase in power generated. This research then lead into the defining of four initial designs which were eventually paired down into one. The largest factors leading to the change in design were the combination of rotation and anchoring methods, the flotation structure, and the structure required hold the panel modules together. In the end, the final design is a modular circular design with panels and mirrors to help add efficiency, approximately 37%. From there, an economic and environmental feasibility study was done and for both, this design was deemed feasible for Finland. With the design, detailed in this report, it would be possible to implement this and make a profit off of it, leading the team to believe that this should be implemented in places looking for alternatives for renewable energy production

The Relationship between Personality Organization and Psychiatric Classification in Chronic Pain Patients

The assessment of PO is a crucial issue for diagnosis and treatment planning in CPPs, since it represents a measure of structural impairment that is to a considerable extent independent of axis I and II diagnoses. Moreover, the STIPO dimensional rating focuses on the most salient dysfunctions at a given time. Copyright (C) 2010 S. Karger AG, BaselBackground: The present study investigated the relationship between psychiatric classification and personality organization (PO) in a secondary/tertiary clinical sample of chronic pain patients (CPPs). Sampling and Methods: Forty-three patients were administered the Structured Clinical Interview for DSM-IV (SCID I+II) and the Structured Interview of Personality Organization (STIPO). The prevalence of axis I and axis II disorders was correlated with the STIPO level of PO. The STIPO dimensional ratings of patients without personality disorder (PD) were compared to those of patients diagnosed with one or more PDs. Results: Axis I comorbidity was high (93%), and 63% of the patients met the criteria for at least one axis II diagnosis. Twenty-five patients (58%) were diagnosed as borderline PO, with high-level impairments in the dimensions `coping/rigidity', `primitive defenses' and `identity'. Higher axis I and axis II comorbidity corresponded with greater severity of PO impairment. No difference was found between the dimensional ratings of patients without PD and those of patients with one or more PDs. Conclusions

A FRAMEWORK FOR THE STRATEGIC POSITIONING OF INTRA-COMPANY ICT RESEARCH ORGANIZATIONS

By the early twentieth century, Schumpeter had already stressed the importance of innovation for a sustainable development of enterprises. Innovation is especially important for information and com-munication technology (ICT) companies as their business model is based on rapidly changing tech-nology. They therefore often profit from innovation developed in intra-company research organiza-tions. However, ICT research organisations often face a special challenge: the integration of research results into existing ICT architectures. This challenge has neither been analysed in literature on in-formation systems nor on innovation management. In order to gain a deeper understanding of this challenge, we analysed case studies in four intra-company research organisations, among them one in-depth case study. Our research shows that an intra-company ICT research organisation can make a decision based on three important strategic parameters: (a) the desired degree of innovativeness, (b) the desired degree of integrability into existing architecture, and (c) the desired degree of orientation towards prospective users’ needs. Based on our case study analysis, we argue that these three strate-gic goals are concurrent, i.e. to achieve one of them makes it difficult to achieve the others. Adhering to contingency theory, we believe that there is not one best strategic position, but that the quality of a strategic position depends on environmental contingency factors. In addition to the development of the framework, we consider contingency theory and formulate two hypothetical propositions. They de-scribe stable strategic positions of intra-company ICT research organisations in our framework, de-pendent on contingency factors. To the best of our knowledge, this is the first research publication dealing with the special requirements of intra-company ICT research organizations and the challenge of integration. Nevertheless, our research is limited by its exploratory nature and by the relatively small number of case studies taken. For generating more hypotheses, further explorative research in the field has to be done. Moreover, in order to confirm the assumptions our framework is based upon and the hypothetical propositions generated, further confirmative research is necessary

Current advances on ABC drug transporters in fish

Most members of the large ATP-binding cassette (ABC) gene family are transporters involved in substrate translocation across biological membranes. In eukaryotes, ABC proteins functioning as drug transporters are located in the plasma membrane and mediate the cellular efflux of a wide range of organic chemicals, with some transporters also transporting certain metals. As the enhanced expression of ABC drug transporters can confer multidrug resistance (MDR) to cancers and multixenobiotic resistance (MXR) to organisms from polluted habitats, these ABC family members are also referred to as MDR or MXR proteins. In mammals, ABC drug transporters show predominant expression in tissues involved in excretion or constituting internal or external body boundaries, where they facilitate the excretion of chemicals and their metabolites, and limit chemical uptake and penetration into "sanctuary" sites of the body. Available knowledge about ABC proteins is still limited in teleost fish, a large vertebrate group of high ecological and economic importance. Using transport activity measurements and immunochemical approaches, early studies demonstrated similarities in the tissue distribution of ABC drug transporters between teleosts and mammals, suggesting conserved roles of the transporters in the biochemical defence against toxicants. Recently, the availability of teleost genome assemblies has stimulated studies of the ABC family in this taxon. This review summarises the current knowledge regarding the genetics, functional properties, physiological function, and ecotoxicological relevance of teleostean ABC transporters. The available literature is reviewed with emphasis on recent studies addressing the tissue distribution, substrate spectrum, regulation, physiological function and phylogenetic origin of teleostean ABC transporters

THEORETICAL STABILITY OF INFORMATION SYSTEMS DESIGN THEORY EVALUATIONS BASED UPON HABERMAS’S DISCOURSE THEORY

A challenge in Information Systems Design Science Research (ISDSR) is the evaluation of constructed Information Systems Design Theories. March and Smith (1995, p. 254) state that “significant difficulties … result from the fact that artifact performance is related to the environment in which it operates.” Therefore, it is nearly impossible to achieve stable knowledge of the utility of ISDSR artifacts. This is a severe problem because—as in each scientific discipline—it should be able to show that there is progress in ISDSR. In this paper, we propose an approach for improving the stability of knowledge of the utility of ISDSR artifacts. We focus on instability resulting from the social setting of an evaluation context. By applying Habermas’s Discourse Theory, we show why a separation of stakeholder types is essential for gaining stable knowledge on the utility of ISDTs