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Peer Reviewed
See detailProlegomena to a comparative history of small and minority literatures
Glesener, Jeanne UL

in Hitzke, Diana (Ed.) Dominanz und Innovation. Epistemologische und künsterliche Konzepte kleiner europäischer und nicht-westlicher Kulturen (2021)

Detailed reference viewed: 34 (1 UL)
See detailThe Markets in Crypto-Assets Regulation (MICA) and the EU Digital Finance Strategy
Zetzsche, Dirk Andreas UL; Arner; Buckley et al

in Capital Markets Law Journal (2021), 16(1),

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See detailRapport de recherche : Une histoire messine de la dynastie impériale des Luxembourg : les Chroniques de Jacques Dex (vers 1439)
Lazzari, Antoine UL

in Hemecht: Zeitschrift für Luxemburger Geschichte (2021), 73(2), 4

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See detailDemand-Based Adaptive Multi-Beam Pattern and Footprint Planning for High Throughput GEO Satellite Systems
Jubba Honnaiah, Puneeth UL; Maturo, Nicola; Chatzinotas, Symeon UL et al

in IEEE Open Journal of the Communications Society (2021)

The current broadband coverage area requisites and the expected user demand is satisfied by the state of the art satellite industry by using multiple spot beams of high throughput satellites with fixed ... [more ▼]

The current broadband coverage area requisites and the expected user demand is satisfied by the state of the art satellite industry by using multiple spot beams of high throughput satellites with fixed multi-beam pattern and footprint planning. However, in recent years, new mobile broadband users with dynamic traffic demand are requesting for services in remote geographical locations such as air (aeroplanes) and water (ships). Furthermore, the expected demand varies with time and geographical location of the users. Hence, a practical approach to meet such heterogeneous demand is to plan adaptive beams to the satellites equipped with beamforming capabilities. In this paper, we study the state of the art fixed multi-beam pattern and footprint plan and show its drawbacks to support the non-uniformly distributed user terminals and varying traffic demands. To end this, we propose an adaptive multi-beam pattern and footprint plan where we design spot beams with flexible size and position based on the spatial clustering of the users in order to increase the flexibility of the high throughput satellite system. Numerical simulations demonstrate the high system performance of the proposed methodology. [less ▲]

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See detailStochastic Thermodynamics of Nonlinear Electronic Circuits: A Realistic Framework for Computing Around kT
Freitas, Nahuel; Delvenne, Jean-Charles; Esposito, Massimiliano UL

in Physical Review X (2021), 11(3), 031064

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See detailDie literarische Reaktion auf den Angriff Johanns von Luxemburg auf Metz (1324) und deren Rezeption durch die lokale Geschichtsschreibung: Überlegungen zum Funktionalitätswandel spätmittelalterlicher Gelegenheitsdichtung
Lazzari, Antoine UL

in Dvořáčková, Dana; Solomon, Kristýna; Margue, Michel (Eds.) Über den Hof und am Hofe: Literatur und Geschichtsschreibung im Mittelalter (2021)

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See detailDevelopmental changes in neural letter-selectivity: A 1-year follow-up of beginning readers
van de Walle de Ghelcke, Alice; Rossion, Bruno; Schiltz, Christine UL et al

in Developmental science (2021), 24(1), 12999

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See detailOperationalisierungen von Beeinträchtigung und Behinderung bei Kindern und Jugendlichen – eine illustrative Replikation aus dem Teilhabebericht
Stöcker, Anne UL; Zurbriggen, Carmen UL

in Empirische Sonderpädagogik (2021), 13(4), 354-364

Der Kurzbeitrag repliziert die dem ersten Teilhabebericht (BMAS, 2013) zugrundeliegende Berechnung von Beeinträchtigung und Behinderung bei Kindern und Jugendlichen auf Basis der für Deutschland ... [more ▼]

Der Kurzbeitrag repliziert die dem ersten Teilhabebericht (BMAS, 2013) zugrundeliegende Berechnung von Beeinträchtigung und Behinderung bei Kindern und Jugendlichen auf Basis der für Deutschland repräsentativen „Studie zur Gesundheit von Kindern und Jugendlichen in Deutschland“ (KiGGS). Ausgangspunkt für die statistische Illustration unterschiedlicher Modelle von Beeinträchtigung ist der „Children with Special Health Care Needs (CSHCN) Screener“. Die Bandbreite der Anteile an Beeinträchtigung bei Kindern und Jugendlichen in Deutschland bewegt sich je nach Operationalisierung zwischen 9.3 % und 23.8 %, wobei die erste Angabe das im Teilhabebericht gewählte Modell darstellt. Der Anteil an Behinderung beläuft sich diesem entsprechend auf 2 %. Die Ergebnisse verdeutlichen die Bedeutsamkeit von Transparenz hinsichtlich der zugrundeliegenden theoretischen Modelle und Operationalisierungen bei statistischen Angaben zu Behinderung und Beeinträchtigung. [less ▲]

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See detailHealth perception of French SME owners during the 2020 COVID-19 pandemic
Torrès, Olivier; Fisch, Christian UL; Mukerjee, Jinia et al

in International Review of Entrepreneurship (2021), 19(2), 151-168

The COVID-19 pandemic has immense impact on the conditions and behaviours of people and on those of small business owners in particular. Using two samples of some 3700 French business owners, collected ... [more ▼]

The COVID-19 pandemic has immense impact on the conditions and behaviours of people and on those of small business owners in particular. Using two samples of some 3700 French business owners, collected before and during the pandemic, this study finds that on average, health perceptions in terms of physical and mental health differ: while perceptions of good mental health declined, those of good physical health improved. We also find that the size of business and the growth of turnover are mechanisms that contributed to the decline of the total health score. This novel finding implies that during the pandemic, business size and growth of turnover are seen as liabilities rather than assets by business owners. The results of our study have strong implications both for business owners as well as for policy makers. [less ▲]

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See detailMotives and profiles of ICO investors
Fisch, Christian UL; Masiak, Christian; Vismara, Silvio et al

in Journal of Business Research (2021), 125(3), 564-576

Research on initial coin offerings (ICOs) is nascent and assesses ICOs from the perspectives of ventures and regulators. Little is known about the equally important group of investors who provide their ... [more ▼]

Research on initial coin offerings (ICOs) is nascent and assesses ICOs from the perspectives of ventures and regulators. Little is known about the equally important group of investors who provide their capital to ventures in ICOs. Using a primary dataset of 517 ICO investors, we identify and categorize the motivations to invest in ICOs using factor analysis. We find that investors are driven by ideological, technological, and financial motives. Regarding the relative importance of the motives, we find that technological motives are the most important motives to ICO investors, followed by financial and ideological motives. To further profile investors, we conduct a regression analysis to distinguish investors across different motives. For example, we show significant differences across motives with regard to investors' risk perception, sources of information, and demand for strict regulation. The implications of this study for both theory and practice are considerable. [less ▲]

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See detailAre behavioral and electrophysiological measures of impulsivity useful for predicting entrepreneurship?
Fisch, Christian UL; Franken, Ingmar; Thurik, Roy

in Journal of Business Venturing Insights (2021), 16

We examine the association between several behavioral and electrophysiological indices of impulsivity-related constructs and multiple entrepreneurial constructs. Specifically, we investigate if these ... [more ▼]

We examine the association between several behavioral and electrophysiological indices of impulsivity-related constructs and multiple entrepreneurial constructs. Specifically, we investigate if these behavioral and electrophysiological measures are more useful as predictors of entrepreneurship than self-reported measures of impulsivity. Our findings are based on two datasets (n = 133 and n = 142) and indicate that behavioral and electrophysiological impulsivity measures are not robustly associated with entrepreneurship constructs, in contrast to selfreported measures of impulsivity. Though disappointing at first, our findings pave the way for future research on the relevance of behavioral and electrophysiological measures for entrepreneurship. [less ▲]

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See detailBankruptcy regulation and self-employment entry: the moderating roles of income share, parenthood, and hybrid entrepreneurship
Schulz, Matthias; Schwens, Christian; Fisch, Christian UL

in Entrepreneurship: Theory and Practice (2021), 45(6), 1522-1549

We investigate how individual factors moderate the impact of bankruptcy exemption levels—that is, the amount of wealth individuals can keep in case of bankruptcy—on entry into self-employment ... [more ▼]

We investigate how individual factors moderate the impact of bankruptcy exemption levels—that is, the amount of wealth individuals can keep in case of bankruptcy—on entry into self-employment. Conceptually, we combine Prospect Theory’s axiom of diminishing sensitivity with insights from research on entrepreneurial failure. We hypothesize that individuals who face higher financial, social, or psychological costs because of bankruptcy will be less sensitive to higher exemption levels than will those who face lower costs across these dimensions. Our empirical results, which are based on a quasi-natural experiment in the United States, support our theoretical predictions. [less ▲]

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See detailEditorial comments for the special issue on digital innovation management
Pinkwart, Andreas; Block, Jörn; Proksch, Dorian et al

in International Journal of Innovation and Technology Management (2021), 18(2), 2002001

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See detailA comprehensive review of the global development of initial coin offerings (ICOs) and their regulation
Bellavitis, Cristiano; Fisch, Christian UL; Wiklund, Johan

in Journal of Business Venturing Insights (2021), 15(6), 00213

Initial coin offerings (ICOs) represent an innovative and new funding mechanism for new technology ventures. In our comprehensive review of the industry’s evolution, we show that despite its short history ... [more ▼]

Initial coin offerings (ICOs) represent an innovative and new funding mechanism for new technology ventures. In our comprehensive review of the industry’s evolution, we show that despite its short history, there have been dramatic changes and shifts in the number of ICOs, the amount of money raised, the geographic distribution of ICOs, and their regulation. This dynamism calls into question current research practices and findings. We propose that scholars sort out and differentiate supply of vs. demand for ICO funding, taking geography and regulation into account with a global perspective. [less ▲]

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See detailLearning from invention failure among research organizations: the role of top management team founding experiences and exposure to US culture
Semrau, Thorsten; Fisch, Christian UL; Klingbeil, Caren

in Industry and Innovation (2021), 28(6), 704-724

Building on organisational failure learning and upper echelons theory, we examine the link between top management team (TMT) prior experiences and invention failure learning among research organisations ... [more ▼]

Building on organisational failure learning and upper echelons theory, we examine the link between top management team (TMT) prior experiences and invention failure learning among research organisations. Specifically, we develop theoretical arguments to suggest that TMT founding experience and exposure to US culture facilitate organisational learning from failure. We test our theoretical reasoning using a longitudinal data set comprising 550 organisation-year observations of the patenting activities conducted by 39 research institutes in Germany. In support of our theoretical arguments, we find that TMT founding experience and TMT exposure to US culture positively moderate the link between prior invention failure and subsequent invention performance. Pointing to TMT experiences as a crucial contingency for whether organisations learn from failure, the present study contributes to the literature on organisational failure learning and upper echelons. [less ▲]

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See detailHow does entrepreneurial failure change an entrepreneur’s digital identity? Evidence from Twitter data
Fisch, Christian UL; Block, Jörn

in Journal of Business Venturing (2021), 36(1), 106015

We assess whether and how entrepreneurs' digital identities change in response to entrepreneurial failure based on a sample of 760 entrepreneurs who experienced failure. We analyze a longitudinal dataset ... [more ▼]

We assess whether and how entrepreneurs' digital identities change in response to entrepreneurial failure based on a sample of 760 entrepreneurs who experienced failure. We analyze a longitudinal dataset of Twitter messages before, during, and after a business failure with a language-based method of computerized text analysis. The results of our explorative research indicate that the financial, social, and psychological consequences of failure are reflected in entrepreneurs' Tweets and lead to changes in their digital identities. Among others, entrepreneurs' language decreases in emotional tone and indicates increased psychological distress. Simultaneously, we observe higher levels of self-assurance and reflection after failure. We conclude by outlining the potential of using Twitter-generated digital footprints in future entrepreneurship research. [less ▲]

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See detailArtificial neural network to predict the weld status in laser welding of copper to aluminum
Mathivanan, Karthik UL; Plapper, Peter UL

in Procedia CIRP (2021)

Laser welding of copper to aluminum is challenging due to the formation of complex intermetallic phases. More Al (~18.5 at. %) can be dissolved in Cu, in contrast to Cu (~2.5 at. %) in Al. Therefore ... [more ▼]

Laser welding of copper to aluminum is challenging due to the formation of complex intermetallic phases. More Al (~18.5 at. %) can be dissolved in Cu, in contrast to Cu (~2.5 at. %) in Al. Therefore, welding from copper side, large melting of Al can be achieved. However optimum Cu and Al must be melted for a strong joint. Finding the right amount is difficult and time consuming by tradition analysis technique like inspection by weld cross-sections. Considering the speed of the welding process and complexity of analysis involving with metallography cross-sections, alternative rapid method to qualify the welds are necessary. The acoustic emission during laser welding can give proportional information of the Al, Cu melted. With such an approach the weld status can be obtained in real time. In this paper the acoustic welding signal using an airborne sensor in the audible range of 20 Hz to 20 kHz, is correlated to the weld strength and material mixing (Al, Cu melt). Finally, the weld status is predicted by an artificial neural network based on the acquired signal. [less ▲]

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See detailOnion Routing with Replies
Kuhn, Christiane; Hofheinz, Dennis; Rupp, Andy UL et al

in Advances in Cryptology - ASIACRYPT 2021 - 27th International Conference on the Theory and Application of Cryptology and Information Security Singapore, December 6-10, 2021, Proceedings, Part II (2021)

Detailed reference viewed: 22 (3 UL)