Invited Talk: Jump Regressions Revisited

Prof. Mathias Vetter (Department of Mathematics, Kiel University) holds a talk on “Jump Regressions Revisited” on Thu. May 11, 2023 at 4:00pm in N.1.43. Guests welcome!

Abstract

A relevant question in the econometrics literature is whether a jump in one stochastic process Z triggers a jump in a related process Y. Starting with the work by Li, Todorov and Tauchen (2017), several papers have discussed this issue, typically in the situation where a jump in Z forces Y to have a jump as well, with the size of the jump in Y given as a function of the simultaneous jump in Z. Asymptotics are then derived in a high-frequency setting, often with the functional relation being linear and based on finite activity jumps in Y and Z. In this talk, we will discuss more realistic scenarios, including infinite activity jumps and a more classical regression assumption, namely that the jump sizes in Y are not given exactly by a function of the corresponding jump size in Z, but involving additional i.i.d. errors. We will sketch how asymptotical results can be obtained in two different situations.

Paul Schweinzer and Martin Wagner Awarded Title of Full Professor by University of Ljubljana

The School of Economics and Business (EF – Ekonomska Fakulteta) of the University of Ljubljana has awarded the two economics professors Paul Schweinzer and Martin Wagner the title of “full professor for economics” (redni profesor za področje ekonomija). This will contribute to establishing a firmer base for the existing cooperation, for instance with regard to teaching in the Doctoral Programme in Business and Economics of the EF. Martin Wagner has been teaching at the EF – with interruptions – for more than 20 years, mostly in the PhD programme. Paul Schweinzer has been holding the Microeconomics / Game Theory lecture in this programme since 2018. These courses are also open to PhD students at the AAU and many other partner universities via CESEENet. Intensifying the cooperation between EF and W&R is particularly relevant in view of the Double Degree Programme planned by the two faculties.

Vorstudie zur Bodenverdichtung und Sensibilisierung im Grünland in Kärnten (Südösterreich) von Glenda Garcia-Santos

In dieser Studie wurde der Einfluss unterschiedlicher Bewirtschaftungsstrategien in Bezug auf Vieh- und Maschineneinsatz auf die Lagerungsdichte und den Eindringwiderstand von Dauergrünland im Süden Österreichs (Kärnten) untersucht. Basis dafür waren die Nachweise von Bodenverdichtungen in zwei Grünlandflächen von Klinger et al. (2019).

Von Glenda Garcia-Santos1, Manjana Puff1, Martin Orel1 und Andreas Bohner2

1Universität Klagenfurt, Geographie, Klagenfurt, Österreich, 2HBLFA Raumberg-Gumpenstein, Österreich

https://meetingorganizer.copernicus.org/EGU23/EGU23-11647.html

 

New Publication! Special Issue “Infrastructures of Value in Agriculture”

Values—whether financial profit or moral and social values such as justice and sustainability—often appear as abstract and intangible. Infrastructure allows us to explore the materiality of seemingly immaterial value.

 

 

The special issue “Infrastructures of Value: New and Historical Materialities in Agriculture” (Ethnos – Journal of Anthropology), edited by Christof Lammer (Klagenfurt) and André Thiemann (Prague) shows how infrastructures and practices of infrastructuring shape value of agricultural matter. Ethnographic studies from Australia, China, Moldova, Serbia and Italy examine land’s financialization, terroir wine and its bottles, eco-certification and alternative food networks as well as the interaction between agronomics and cold chains. As material networks, infrastructures facilitate, channel, or hinder circulation—the metamorphoses as well as movement of objects, people, non-human beings and ideas. In doing so, they mediate value: they give actions and their products importance and relevance by materially integrating them into larger wholes. Thereby, this approach brings attention to materiality to David Graeber’s theory of value. The exploration of infrastructures of value thus offers new perspectives for thinking about the production, appropriation and distribution of material wealth.

Table of Contents

Introduction: Infrastructuring Value* by Christof Lammer & André Thiemann

Infrastructures of Farmland Valuation in Australia* by Sarah R. Sippel

Nature’s Value: Evidencing a Moldovan Terroir Through Scientific Infrastructures* by Daniela Ana 

Peasant in a Bottle: Infrastructures of Containment for an Italian Wine Cooperative* by Oscar Krüger

Valuing Organics: Labels, People, and the Materiality of Information Infrastructure in China* by Christof Lammer

Infrastructuring ‘Red Gold’: Agronomists, Cold Chains, and the Involution of Serbia’s Raspberry Country by André Thiemann

Infrastructuring Value Worlds: Connections and Conventions of Capitalist Accumulation by Edward F. Fischer

(Articles marked with * are open access.)

Christof Lammer is a social anthropologist and postdoctoral researcher at the Department of Science, Technology and Society Studies (STS) at the University of Klagenfurt.