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Institution

University of Konstanz

EducationKonstanz, Baden-Württemberg, Germany
About: University of Konstanz is a education organization based out in Konstanz, Baden-Württemberg, Germany. It is known for research contribution in the topics: Population & Visualization. The organization has 12115 authors who have published 27401 publications receiving 951162 citations. The organization is also known as: University of Constance & Universität Konstanz.


Papers
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Journal ArticleDOI
TL;DR: This article collects examples of visualizations with ‘best-in-class’ interaction and uses them to extract practical design guidelines for future designers and researchers to address the issue of interaction in visualization.
Abstract: Despite typically receiving little emphasis in visualization research, interaction in visualization is the catalyst for the user's dialogue with the data, and, ultimately, the user's actual understanding and insight into these data. There are many possible reasons for this skewed balance between the visual and interactive aspects of a visualization. One reason is that interaction is an intangible concept that is difficult to design, quantify, and evaluate. Unlike for visual design, there are few examples that show visualization practitioners and researchers how to design the interaction for a new visualization in the best manner. In this article, we attempt to address this issue by collecting examples of visualizations with 'best-in-class' interaction and using them to extract practical design guidelines for future designers and researchers. We call this concept fluid interaction, and we propose an operational definition in terms of the direct manipulation and embodied interaction paradigms, the psychological concept of 'flow', and Norman's gulfs of execution and evaluation.

234 citations

Posted Content
TL;DR: In this article, a methodology for modeling time series of realized covariance matrices in order to forecast multivariate risks is proposed, which allows for flexible dynamic dependence patterns and guarantees positive definiteness of the resulting forecasts without imposing parameter restrictions.
Abstract: This paper proposes a methodology for modelling time series of realized covariance matrices in order to forecast multivariate risks. The approach allows for flexible dynamic dependence patterns and guarantees positive definiteness of the resulting forecasts without imposing parameter restrictions. We provide an empirical application of the model, in which we show by means of stochastic dominance tests that the returns from an optimal portfolio based on the model’s forecasts second-order dominate returns of portfolios optimized on the basis of traditional MGARCH models. This result implies that any risk-averse investor, regardless of the type of utility function, would be better-off using our model.

234 citations

Journal ArticleDOI
TL;DR: The authors integrate research on child simultaneous bilingual (2L1) acquisition more directly into the heritage language acquisition literature and offer an epistemological discussion related to incomplete acquisition, highlighting the descriptive and theoretical inaccuracy of the term.
Abstract: This paper integrates research on child simultaneous bilingual (2L1) acquisition more directly into the heritage language (HL) acquisition literature. The 2L1 literature mostly focuses on development in childhood, whereas heritage speakers (HSs) are often tested at an endstate in adulthood. However, insights from child 2L1 acquisition must be considered in HL acquisition theorizing precisely because many HSs are the adult outcomes of child 2L1 acquisition. Data from 2L1 acquisition raises serious questions for the construct of incomplete acquisition, a term broadly used in HL acquisition studies to describe almost any difference HSs display from baseline controls (usually monolinguals). We offer an epistemological discussion related to incomplete acquisition, highlighting the descriptive and theoretical inaccuracy of the term. We focus our discussion on two of several possible causal factors that contribute to variable competence outcomes in adult HSs, input (e.g., Sorace, 2004; Rothman, 2007; Pascual y Cabo & Rothman, 2012) and formal instruction (e.g., Kupisch, 2013; Kupisch et al., 2014) in the HL. We conclude by offering alternative terminology for HS outcomes.

234 citations

Journal ArticleDOI
TL;DR: Northern blot analysis demonstrated that upregulation of carotenogenesis in the transgenics is accompanied by substantial higher phytoene synthase transcript levels in 6-week-old tubers and a very slight increase of the beta-carotene hydroxylase transcript and the amount of the deoxyxylulose 5-phosphate synthase mRNA was very similar in wild type and transformed tubers.

233 citations

Journal ArticleDOI
TL;DR: The 1980s regime shift represented a major change in the Earth's biophysical systems from the upper atmosphere to the depths of the ocean and from the Arctic to the Antarctic, and occurred at slightly different times around the world.
Abstract: Despite evidence from a number of Earth systems that abrupt temporal changes known as regime shifts are important, their nature, scale and mechanisms remain poorly documented and understood. Applying principal component analysis, change-point analysis and a sequential t-test analysis of regime shifts to 72 time series, we confirm that the 1980s regime shift represented a major change in the Earth's biophysical systems from the upper atmosphere to the depths of the ocean and from the Arctic to the Antarctic, and occurred at slightly different times around the world. Using historical climate model simulations from the Coupled Model Intercomparison Project Phase 5 (CMIP5) and statistical modelling of historical temperatures, we then demonstrate that this event was triggered by rapid global warming from anthropogenic plus natural forcing, the latter associated with the recovery from the El Chichon volcanic eruption. The shift in temperature that occurred at this time is hypothesized as the main forcing for a cascade of abrupt environmental changes. Within the context of the last century or more, the 1980s event was unique in terms of its global scope and scale; our observed consequences imply that if unavoidable natural events such as major volcanic eruptions interact with anthropogenic warming unforeseen multiplier effects may occur.

233 citations


Authors

Showing all 12272 results

NameH-indexPapersCitations
Robert E. W. Hancock15277588481
Lloyd J. Old152775101377
Andrew White1491494113874
Stefanie Dimmeler14757481658
Rudolf Amann14345985525
Niels Birbaumer14283577853
Thomas P. Russell141101280055
Emmanuelle Perez138155099016
Shlomo Havlin131101383347
Bruno S. Frey11990065368
Roald Hoffmann11687059470
Michael G. Fehlings116118957003
Yves Van de Peer11549461479
Axel Meyer11251151195
Manuela Campanelli11167548563
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Performance
Metrics
No. of papers from the Institution in previous years
YearPapers
202360
2022202
20211,361
20201,299
20191,166
20181,082