iiinova — where your digital self keeps evolving

Ulrich Kaiser @ulrichkaiser.bsky.social · 05/09/2025

📣📣📣WE ARE HIRING AT UNI ZURICH📣📣📣 Want to work in a super attractive environment and you are an #innovation scholar? ⏩ Apply here: jobs.uzh.ch/job-vacancie.... (pic taken frommy office)

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Ulrich Kaiser @ulrichkaiser.bsky.social · 25/02/2025

♀️♀️♀️EPISODE 2♀️♀️♀️ of 🇨🇭🇨🇭 WOMEN STARTUPS AND WHERE TO FIND THEM 🇨🇭🇨🇭 In our last episode (lnkd.in/d5C7vHn9) we discussed where to find ♀️ startups (relative to ♂️ startups) in general so the next question to be answered is: WHERE DO WE FIND WOMEN GROWTH-ORIENTED VS WOMEN NON GROWTH-ORIENTED STARTUPS?

lnkd.in

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Ulrich Kaiser @ulrichkaiser.bsky.social · 24/02/2025

if such terms were unavailable, via Gender API (in combination with information of the country of origin). Manuel Bolz provided superb research assistence.

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Ulrich Kaiser @ulrichkaiser.bsky.social · 24/02/2025

Our data starts in March 2016 and ends December 2023. The figures shown are averaged across Swiss municipalities. We identified founders as female vs mal via gendered terms such as Staatsbürgerin (female citizen in German) and,

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Ulrich Kaiser @ulrichkaiser.bsky.social · 24/02/2025

Where's the data from? We downloaded it via the Zefix API in cooperation with Chiron Services and with financial support by Swiss National Science Foundation SNSF as well as Innosuisse.

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Ulrich Kaiser @ulrichkaiser.bsky.social · 24/02/2025

The ratio of women to men startups is 0.322 (i.e., for three men startups there is one women startup) across municipalities, similar to basically all other countries we tend to compare us with.

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Ulrich Kaiser @ulrichkaiser.bsky.social · 24/02/2025

So, where to find them? Mostly in the cantons of Basel city and Zurich but rarely in Appenzell-Innerhoden, Schaffhausen or Neuchatel. They are also more likely to be found in rural and "intermediate" areas than in cities (which offer better options in dependent employment).

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Ulrich Kaiser @ulrichkaiser.bsky.social · 24/02/2025

♀️♀️♀️ 🇨🇭🇨🇭🇨🇭 Women Startups and Where to Find Them 🇨🇭🇨🇭🇨🇭♀️♀️♀️: Well, what is a "women startup" in the first place? It's a new business registration on the Swiss Business Register (www.zefix.ch) which has more women founders than men founders.

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Ulrich Kaiser @ulrichkaiser.bsky.social · 15/02/2025

Ruf mal beim Gemeindeamt Deines letzten Wohnsitzes an. Das hat bei uns geklappt.

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Ulrich Kaiser @ulrichkaiser.bsky.social · 15/02/2025

At the same time, the journey was also super rewarding, we got really good comments from reviewers and editors, and I am really proud of this very elegant paper that I think is both relevant and rigorous.

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Ulrich Kaiser @ulrichkaiser.bsky.social · 15/02/2025

It's been a very long journey. It's been so long that two new kids arrived in the meantime (not in my household). And a pandemic. And my hair turned grey, at least the bit that remained.

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Ulrich Kaiser @ulrichkaiser.bsky.social · 15/02/2025

For instance, we were able to proxy investment in customer retention that is usually difficult to measure, via the number of game updates.

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Ulrich Kaiser @ulrichkaiser.bsky.social · 15/02/2025

This brought a new and very amazing coauthor, Reinhold Kesler (now Düsseldorf Institute for Competition Economics (DICE)) who pushed the empirical part to a very high level.

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Ulrich Kaiser @ulrichkaiser.bsky.social · 15/02/2025

The model derives empirically testable hypotheses that we... do no longer test using German magazine data. We use a nowadays much more relevant market instead, online games.

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Ulrich Kaiser @ulrichkaiser.bsky.social · 15/02/2025

The beauty of the model is that it cannot only explain phenomena observable in the real world, but it also arrives at conclusions that off-the shelf theory would not arrive at. E.g., the mapping between market value and product variety is inverted u-shaped.

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Ulrich Kaiser @ulrichkaiser.bsky.social · 15/02/2025

The model shows that both variables are substitutes. The mechanism here is that a firm can keep its existing consumers by investment in customer retention but can also attract switching consumers from rivals by a larger portfolio size.

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Ulrich Kaiser @ulrichkaiser.bsky.social · 15/02/2025

Standard micro theory can't really explain this phenomenon. Markus got back to me from Regensburg a few weeks later with a sketch of a theoretical model that featured the interplay between investing in portfolio size and investing in consumer retention.

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Ulrich Kaiser @ulrichkaiser.bsky.social · 15/02/2025

It all started with the question "Why do so many magazine publishers have multiple titles in the exact same segment?" (yes, magazine, it was 20169 that I asked one of my absolute favorite applied micro theorists, Markus Reisinger of Frankfurt School of Finance & Management.

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Ulrich Kaiser @ulrichkaiser.bsky.social · 15/02/2025

It all started at a meeting of the Industrial Economics field committee of the Verein für Socialpolitik e.V. meeting in Regensburg back in 2016 (superbly organized by Andreas Roider). And it's now accepted for publication in Management Science.

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Ulrich Kaiser @ulrichkaiser.bsky.social · 06/02/2025

Vielleicht müssen wir dann auch alle um 5 Uhr aufstehen, gerade wir faulen Städter.

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Reposted by Ulrich Kaiser

Open Data Kanton Zürich @opendatazh.bsky.social · 06/02/2025

Das Delta zwischen Besuchenden (in unserem Katalog) und Downloads zeigt schön, wie wichtig Multiplikatoren wie data.europa.eu sind. Und wie unnötig Kantonsgrenzen für Daten sind.

data.europa.eu

The official portal for European data | data.europa.eu

Discover the single point of access to open data from European countries, EU institutions, agencies and bodies and other European countries.

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Ulrich Kaiser @ulrichkaiser.bsky.social · 03/02/2025

Full disclosure: no, Franziska and I do *not* share a common family heritage. She is, however, a member of my academic family heritage - she was supervised by Christian Peukert, who was a post-doc at the chair many years ago.

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Ulrich Kaiser @ulrichkaiser.bsky.social · 03/02/2025

There is a new Kaiser in the house, and it is Franziska Kaiser, our new post-doctoral student who is joining us from HEC Lausanne. Welcome Franziska!

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Pedro Sant’Anna @pedrosantanna.bsky.social · 03/01/2025

I've decided to collect my DiD materials in a single place. psantanna.com/did-resources There, you will find - 14 lectures of my comprehensive DiD course - Shorter lectures/talks I have given on DiD - My DiD R/Stata/Python packages - Some DiD checklists - DiD materials from my friends Enjoy!

psantanna.com

Pedro H. C. Sant’Anna

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Ulrich Kaiser @ulrichkaiser.bsky.social · 06/01/2025

Thanks to Christian Ehring and Rheinische Post, I've had my four seconds of fame this morning.

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Ulrich Kaiser @ulrichkaiser.bsky.social · 13/12/2024

Glückwunsch! Du kommst ja gut rum, und erst noch für einen Bayern. @imkereimers.bsky.social ist schon da und sicher parat für Outdoor activities.

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Ulrich Kaiser @ulrichkaiser.bsky.social · 07/12/2024

Oh, this is likely not good news for me.

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Ulrich Kaiser @ulrichkaiser.bsky.social · 06/12/2024

Grenzen werden schnell grenzwertig unübersichtlich, das stimmt.

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Ulrich Kaiser @ulrichkaiser.bsky.social · 06/12/2024

Das Irre an dem enormen Druck auf GymischülerInnen in der 🇨🇭 ist: sitzen sie dann erst einmal in der Vorlesung, dann sie im Durchschnitt ganz genau so gut vorbereitet wie meine Studierenden in 🇩🇰 und 🇩🇪 - sie wirken mir dafür auch deutlich orientierungsloser. www.tagesanzeiger.ch/langzeit-gym...

tagesanzeiger.ch

Mein Sohn geht ins Gymi, es ist der Himmel – und die Hölle

Mein 12-jähriges Kind geniesst die neu gewonnenen Freiheiten. Gleichzeitig leidet es unter dem enormen Druck. In der Familie gibt es eigentlich nur noch ein Thema.

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Ulrich Kaiser @ulrichkaiser.bsky.social · 06/12/2024

As a high-skilled immigrant from one of Switzerland's neighboring countries and now a Swiss citizen and voter I might be biased - but this is such an intersting and excellent study where relevance meets rigor. May the journalists take notice!

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Lukas Haffert @lhaffert.bsky.social · 06/12/2024

Mal wieder herausragender Datenjournalismus bei @zeit.de : www.zeit.de/politik/2024... Übrigens gibt es zu fast jeder hier untersuchten Grenze auch akademische Studien (kleiner Thread):

zeit.de

Phantomgrenzen: Wo die alten deutschen Grenzen sichtbar werden

Preußen und das deutsche Kaiserreich beeinflussen noch immer, wie Menschen heute in der EU wählen. Absurd, oder? Wir zeigen erstmals fünf Phantomgrenzen Europas.

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Ulrich Kaiser @ulrichkaiser.bsky.social · 06/12/2024

Bitte so einen Thread auch für Schweizer Phantomgrenzen jenseits des Röstigrabens.

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Reposted by Ulrich Kaiser

Igor Letina @igorletina.bsky.social · 05/12/2024

arXiv is, imo, the best place for publishing working papers and we should recognize the work that volunteers do to provide this public good to us. Here is the list of current arXiv moderators for economics:

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Ulrich Kaiser @ulrichkaiser.bsky.social · 04/12/2024

Ups, den Link hatte ich nicht gesehen, danke.

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Ulrich Kaiser @ulrichkaiser.bsky.social · 04/12/2024

Wie sieht das flow chart für Twitter aus (zum Vergleich)?

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Ulrich Kaiser @ulrichkaiser.bsky.social · 23/11/2024

How is your skitouring season coming along?

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Reposted by Ulrich Kaiser

Anna Goeddeke @annagoeddeke.bsky.social · 21/11/2024

Hi #EconSky, Not sure if the Starter Pack party's over, but I've made an Econ Starter Pack of Starter Packs! 😄 It's a work in progress, so I may have missed some. Let me know if there's anything to add—DMs are open! Thanks for support @economista.bsky.social! docs.google.com/spreadsheets...

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