1,356 research outputs found

    RELEVANCE OF ETHICAL GUIDELINES FOR ARTIFICIAL INTELLIGENCE – A SURVEY AND EVALUATION

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    Ethics for artificial intelligence (AI) is a topic of growing practical relevance. Many people seem to believe that AI could render jobs obsolete in the future. Others wonder who is in charge for the actions of AI systems they encounter. Providing and prioritizing ethical guidelines for AI is therefore an important measure for providing safeguards and increasing the acceptance of this technology. The aim of this research is to survey ethical guidelines for the handling of AI in the ICT industry and evaluate them with respect to their relevance. For this goal, first, an overview of AI ethics is derived from the literature, with a focus on classical Western ethical theories. From this, a candidate set of important ethical guidelines is developed. Then, qualitative interviews with experts are conducted for in-depth feedback and ranking of these guidelines. Furthermore, an online survey is performed in order to more representatively weight the ethical guidelines in terms of importance among a broader audience. Combining both studies, a prioritization matrix is created using the weights from the experts and the survey participants in order to synthesize their votes. Based on this, a ranked catalogue of ethical guidelines for AI is created, and novel avenues for research on AI ethics are presented

    The science behind the magic?. The relation of the Harry Potter “Sorting Hat Quiz” to personality and human values

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    The Harry Potter series describes the adventures of a boy and his peers in a fictional world at the “Hogwarts School of Witchcraft and Wizardry”. In the series, pupils get appointed to one of four groups (Houses) at the beginning of their education based on their personality traits. The author of the books has constructed an online questionnaire that allows fans to find out their House affiliation. Crysel, Cook, Schember, and Webster (2015) argued that being sorted into a particular Hogwarts House through the Sorting Hat Quiz is related to empirically established personality traits. We replicated their study while improving on sample size, methods, and analysis. Although our results are similar, effect sizes are small overall, which attenuates the claims by Crysel et al. The effect vanishes when restricting the analysis to participants who desired, but were not sorted into a particular House. On a theoretical level, we extend previous research by also analysing the relation of the Hogwarts Houses to Schwartz’s Basic Human Values but find only moderate or no relation

    Exploring Digital Transformation’s Impact on Organizational Identity with an Archetype Framework

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    Recently, IS scholars draw attention on the inter-relation between digital transformation and organiza-tional identity. However, little is known about how digital transformation processes affect organizations’ identity change. We assume to grasp this complex phenomenon by distinguishing different manifesta-tions of digital transformation related to organiza-tional structures and modes of value creation, expect-ing each to have distinctive effects on changing or-ganizational identity. We capture these differing ef-fects in an archetype framework as a heuristic for future research

    Potential and Limitations of Research Battery Cell Types for Electrochemical Data Acquisition

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    Developing new electrode materials and/or electrolytes for lithium-ion batteries requires reliable electrochemical testing thereof. For this purpose, in academic research typically hand-made coin-type cells are assembled. Their advantage is a rather cheap and facile assembly, and possibility to prepare full-cells as well as half-cells, meaning cathode-anode or electrode-elemental lithium configurations. Critical parameters for testing data quality and the potential and limitations of cell tests in half-cell configuration are discussed. Further, on the basis of a round robin test, using highly homogenous commercial electrodes, where graphite is used as anode and LiNi0.33Mn0.33Co0.33O2 (NMC111) as the cathode material, it is shown that data acquired is highly influenced by assembling parameters. Besides known variables such as the amount of electrolyte or electrode positioning, the proper height of the cell stack and the steel grade of the housing material are identified as decisive variables. Finally, it is demonstrated that under proper conditions coin cells can show a great cycle stability of >2200 cycles using 1C as dis-/charge rate while retaining a capacity of 80%. This performance is close to pouch-type cells containing the same electrodes and electrolyte, which were used as a benchmark system and showed >3500 cycles of lifetime

    Multistimuli‐Responsive [3]Dioxaphosphaferrocenophanes with Orthogonal Switches

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    Novel multistimuli-responsive phosphine ligands comprising a redox-active [3]dioxaphosphaferrocenophane backbone and a P-bound imidazolin-2-ylidenamino entity that allows switching by protonation are reported. Investigation of the corresponding metal complexes and their redox behaviour are reported and show the sensitivity of the system towards protonation and metal coordination. The experimental findings are supported by DFT calculations. Protonation and oxidation events are applied in Rh-catalysed hydrosilylations and demonstrate a remarkable influence on reactivity and/or selectivity

    Modulation of Habit Formation by Levodopa in Parkinson's Disease

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    Dopamine promotes the execution of positively reinforced actions, but its role for the formation of behaviour when feedback is unavailable remains open. To study this issue, the performance of treated/untreated patients with Parkinson's disease and controls was analysed in an implicit learning task, hypothesising dopamine-dependent adherence to hidden task rules. Sixteen patients on/off levodopa and fourteen healthy subjects engaged in a Go/NoGo paradigm comprising four equiprobable stimuli. One of the stimuli was defined as target which was first consistently preceded by one of the three non-target stimuli (conditioning), whereas this coupling was dissolved thereafter (deconditioning). Two task versions were presented: in a ‘Go version’, only the target cue required the execution of a button press, whereas non-target stimuli were not instructive of a response; in a ‘NoGo version’, only the target cue demanded the inhibition of the button press which was demanded upon any non-target stimulus. Levodopa influenced in which task version errors grew from conditioning to deconditioning: in unmedicated patients just as controls errors only rose in the NoGo version with an increase of incorrect responses to target cues. Contrarily, in medicated patients errors went up only in the Go version with an increase of response omissions to target cues. The error increases during deconditioning can be understood as a perpetuation of reaction tendencies acquired during conditioning. The levodopa-mediated modulation of this carry-over effect suggests that dopamine supports habit conditioning under the task demand of response execution, but dampens it when inhibition is required. However, other than in reinforcement learning, supporting dopaminergic actions referred to the most frequent, i. e., non-target behaviour. Since this is passive whenever selective actions are executed against an inactive background, dopaminergic treatment could in according scenarios contribute to passive behaviour in patients with Parkinson's disease

    Differential Influence of Levodopa on Reward-Based Learning in Parkinson's Disease

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    The mesocorticolimbic dopamine (DA) system linking the dopaminergic midbrain to the prefrontal cortex and subcortical striatum has been shown to be sensitive to reinforcement in animals and humans. Within this system, coexistent segregated striato-frontal circuits have been linked to different functions. In the present study, we tested patients with Parkinson's disease (PD), a neurodegenerative disorder characterized by dopaminergic cell loss, on two reward-based learning tasks assumed to differentially involve dorsal and ventral striato-frontal circuits. 15 non-depressed and non-demented PD patients on levodopa monotherapy were tested both on and off medication. Levodopa had beneficial effects on the performance on an instrumental learning task with constant stimulus-reward associations, hypothesized to rely on dorsal striato-frontal circuits. In contrast, performance on a reversal learning task with changing reward contingencies, relying on ventral striato-frontal structures, was better in the unmedicated state. These results are in line with the “overdose hypothesis” which assumes detrimental effects of dopaminergic medication on functions relying upon less affected regions in PD. This study demonstrates, in a within-subject design, a double dissociation of dopaminergic medication and performance on two reward-based learning tasks differing in regard to whether reward contingencies are constant or dynamic. There was no evidence for a dose effect of levodopa on reward-based behavior with the patients’ actual levodopa dose being uncorrelated to their performance on the reward-based learning tasks

    Habitat diversity and type govern potential nitrogen loss by denitrification in coastal sediments and differences in ecosystem-level diversities of disparate N2O reducing communities

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    In coastal sediments, excess nitrogen is removed primarily by denitrification. However, losses in habitat diversity may reduce the functional diversity of microbial communities that drive this important filter function. We examined how habitat type and habitat diversity affects denitrification and the abundance and diversity of denitrifying and N2O reducing communities in illuminated shallow-water sediments. In a mesocosm experiment, cores from four habitats were incubated in different combinations, representing ecosystems with different habitat diversities. We hypothesized that habitat diversity promotes the diversity of N2O reducing communities and genetic potential for denitrification, thereby influencing denitrification rates. We also hypothesized that this will depend on the identity of the habitats. Habitat diversity positively affected ecosystem-level diversity of clade II N2O reducing communities, however neither clade I nosZ communities nor denitrification activity were affected. The composition of N2O reducing communities was determined by habitat type, and functional gene abundances indicated that silty mud and sandy sediments had higher genetic potentials for denitrification and N2O reduction than cyanobacterial mat and Ruppia maritima meadow sediments. These results indicate that loss of habitat diversity and specific habitats could have negative impacts on denitrification and N2O reduction, which underpin the capacity for nitrogen removal in coastal ecosystems

    Zentral und wartbar sollst Du sein! Der FDM-Bereich am DAI. Die Erstellung eines Informationshubs fĂŒr das Forschungsdatenmanagement

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    Am Deutschen ArchĂ€ologischen Institut (DAI) wurde ein digitaler Knotenpunkt fĂŒr die zentralen Informationen fĂŒr den Bereich Forschungsdatenmanagement (FDM) fĂŒr die Mitarbeitenden domĂ€nenspezifisch aufgearbeitet und prĂ€sentiert. Wenige Inhalte mussten hierfĂŒr neu erstellt werden, die Herausforderung lag in der Zusammenstellung, der Les- und Nutzbarkeit sowie der Reduktion der umfangreichen Inhalte. Zur Umsetzung wurde die Software Confluence verwendet. Konzeption, Aufbau, Struktur sowie verwendete Werkzeuge werden detailliert beschrieben sowie angewandte und erprobte Vorgehensweisen, um einem Veralten der Informationen weitestgehend entgegenzuwirken und eine Wartbarkeit zu ermöglichen. Der FDM-Bereich am DAI wurde in weniger als einem Jahr aufgebaut, in diesem Artikel werden Empfehlungen zur Umsetzung und Vereinfachung gegeben.At the German Archaeological Institute (DAI), a digital hub for all important information for the realm of research data management (RDM) was compiled for the researchers and presented in a domain-specific format. Little new content had to be created, the challenges lay in the compilation, readability and usability as well as the simplification of the extensive material. The Confluence software was used for implementation. The conception, layout, structure and tools used are described in detail. Applied and tested procedures to counteract the obsolescence of information as far as possible and to enable maintainability are presented. The RDM division at the DAI was set up in less than a year, and recommendations for implementation and streamlining are given
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