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Vierteljahrshefte zur Wirtschaftsforschung 4 / 2023
Die Arbeitsformen in der Plattformökonomie stellen etablierte Akteure und Institutionen der Arbeitsbeziehungen vor große Herausforderungen. Plattformarbeit bricht mit zentralen Merkmalen regulärer Beschäftigung, da sie jenseits arbeitsvertraglicher Bindungen und physischer Betriebe geleistet wird und volatil in individuelle Erwerbsarrangements eingebettet ist. Während die bisherige Forschung vor allem ...
2023| Fabian Beckmann, Fabian Hoose
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Forschungsprojekt
In diesem Projekt werden die mittel- bis langfristigen Wirkungen des Deutschland-Tickets, mit dem für 49€ je Monat deutschlandweit der ÖPNV genutzt werden kann, erforscht. Anders als beim temporär gültigen 9€-Ticket handelt es sich beim Deutschland-Ticket um eine langfristig angelegte Ticketpreissenkung, um eine dauerhafte Veränderung des Mobilitätsverhaltens hin zum umweltfreundlichen ÖPNV auch...
Aktuelles Projekt| Energie, Verkehr, Umwelt, Sozio-oekonomisches Panel
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Referierte Aufsätze Web of Science
Online panel surveys are often criticized for their inability to cover the offline population, potentially resulting in coverage error. Previous research has demonstrated that non-internet users in fact differ from online individuals on several sociodemographic characteristics. In attempts to reduce coverage error due to missing the offline population, several probability-based online panels equip ...
In:
Journal of Survey Statistics and Methodology
12 (2024), 1, S. 80-93
| Ruben Bach, Carina Cornesse, Jessica Daikeler
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Konferenz
Heike Schweitzer, one of the panelists invited to speak at the conference, died suddenly a few days before the conference on June 11. The academic world has lost a brilliant legal scholar and intellectual leader in competition law. Our thoughts are with her family and friends.
Imagine there is a conference in Berlin on June 14, 2004 and you have been invited. The invitation arrives in the mail....
14.06.2024| Joanna Bryson (Hertie School Berlin), Alena Buyx (Chair of German Ethics Council), Oren Bar-Gill (Harvard University), Brando Benifei (European Parliament), Francesca Bria (UCL), Emilio Calvano (Luiss University), Flavio Calvino (OECD), Joshua Gans (University of Toronto), Moritz Hardt (Max Planck Institute for Intelligent Systems, Tübingen), Amba Kak (AI Now Institute), Maximilian Kasy (Oxford University), Hannes Ullrich
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Referierte Aufsätze Web of Science
We analyse variation in firm performance as a function of the international diversification of ICT imports by firms. Drawing on administrative data from 2010 and 2014 on nearly 4000 German manufacturing firms, we find that firms with ICT sourcing that is diversified across multiple countries perform better than similar, less-diversified firms. This finding holds true for two performance metrics (value ...
In:
Economics of Innovation and New Technology
34 (2025), 1, S. 94-116
| Alexander Schiersch, Irene Bertschek, Thomas Niebel
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Diskussionspapiere 2091 / 2024
Tracking online user behavior is essential for targeted advertising and is at the heart of the business model of major online platforms. We analyze tracker-specific web browsing data to show how the prediction quality of consumer profiles varies with data size and scope. We find decreasing returns to the number of observed users and tracked websites. However, prediction quality increases considerably ...
2024| Hannes Ullrich, Jonas Hannane, Christian Peukert, Luis Aguiar, Tomaso Duso
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Brown Bag Seminar Industrial Economics
This paper studies the impact of generative AI technology on the demand for online freelancers using a large dataset from a leading global freelancing platform. We focus on how the release of generative AI tools affects various freelance jobs that require different skills or software. Our findings indicate a 21 percent decrease following the ChatGPT introduction in the number of job posts for...
17.01.2024| Jonas Hannane, DIW Berlin
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Diskussionspapiere 2087 / 2024
Freelancers face cold-start problems in online labor markets: getting hired is very difficult without ratings, while obtaining a rating is impossible unless already having been hired. According to economic theory and empirical evidence, advertising can serve as a signal of product quality for experience goods. As such, advertising might help skilled new freelancers without reputation on a platform ...
2024| Jonas Hannane
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DIW Weekly Report 9 / 2025
The price of cryptocurrency Bitcoin has risen sharply over the past ten years, with many investors adding Bitcoin to their portfolios, benefitting from price increases and diversifying their investments. But is Bitcoin suitable for this purpose? This Weekly Report examines the extent to which Bitcoin, like gold, can contribute to the diversification of an investment portfolio. To achieve this, we have ...
2025| Alexander Kriwoluzky, Christoph Schneider
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DIW Wochenbericht 9 / 2025
Der Kurs der Kryptowährung Bitcoin ist in den vergangenen zehn Jahren enorm gestiegen. Viele Anleger*innen haben inzwischen Bitcoin in ihr Portfolio aufgenommen, um von dem Kursanstieg zu profitieren und ihre Anlagen zu diversifizieren. Doch eignet sich die Kryptowährung dazu? Dieser Wochenbericht untersucht, inwiefern Bitcoin ähnlich wie Gold zur Diversifikation und Absicherung eines Anlageportfolios ...
2025| Alexander Kriwoluzky, Christoph Schneider