Christopher Karlsson

BillerudKorsnäs (Sweden)

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Davud Rostam‐Afschar

University of Mannheim

Jannis Bischof

University of Mannheim

Fabian Eble

Escola Brasileira de Economia e Finanças

Johannes Voget

University of Mannheim

Dirk Simons

University of Mannheim

Philipp Dörrenberg

University of Mannheim

Laura Arnemann

University of Mannheim

Thomas Simon

Western Australia Police

Christophe Barbier

BillerudKorsnäs (Sweden)

Florian Buhlmann

Centre for European Economic Research

Cooperative Institutions

University of Mannheim

European School of Management and Technology

Humboldt-Universität zu Berlin

Paderborn University

Ludwig-Maximilians-Universität München

WHU – Otto Beisheim School of Management

Goethe University Frankfurt

Sahlgrenska University Hospital

Institut für Unternehmenskybernetik

Region Västra Götaland

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Vor den Landtagswahlen im Südwesten: Wie Unternehmen in Baden-Württemberg und Rheinland-Pfalz die Corona-Krise bewerten

Jannis Bischof Philipp Dörrenberg Fabian Eble Christopher Karlsson Clemens Lauer

10.52569/ojae6799

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Kostenstruktur und Unternehmensflexibilität in der COVID-19-Krise

Controlling & Management Review (2022)

Jannis Bischof Christopher Karlsson Davud Rostam‐Afschar Thomas Simon Dirk Simons

2019-20 coronavirus outbreak

10.1007/s12176-022-0497-7

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Wirkung und Zielgenauigkeit der staatlichen Hilfen für Unternehmen in der Krise

Jannis Bischof Dirk Simons Johannes Voget Philipp Dörrenberg Davud Rostam‐Afschar

10.52569/exwg1521

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Thermal Analysis of Flatness Measuring System for Rolling Applications

Christopher Karlsson

In rolling applications it is critical to be able to control the flatness of the metal strip. An uneven strip may in the most extreme cases lead to strip breaks. One of the systems used to measure ...

Flatness (cosmology)

STRIPS

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Followers or Ignorants? Inflation Expectations and Price Setting Behavior of Firms

SSRN Electronic Journal (2023)

Philipp Dörrenberg Fabian Eble Christopher Karlsson Davud Rostam‐Afschar Benjamin Tödtmann

Using a randomized survey experiment, we investigate how firms’ inflation expectations shape their price setting. We establish that firms fully pass through inflation expectations to prices in times of high inflation, consistent with Calvo pricing. When informed about central bank inflation forecasts, firms indicate significantly lower planned price increases than their untreated peers. Additionally, treated firms pass through less of their pre-treatment inflation expectations than control-group firms, even more so when additionally receiving central bank forecasts on energy and labor cost developments. Hence, communication of inflation forecasts can shift expectations and prices, and therefore serve as an effective policy tool.

Price setting

10.2139/ssrn.4520501

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A study of air leakage around window constructions

Andreas Borg Christopher Karlsson

Det finns flera kritiska punkter i en byggnad dar luft kan ta sig in, exempelvis genomforingar i klimatskalet for elror och vattenror, anslutningar i klimatskalet i form av dorrar och fonster samt ...

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Empirische Erkenntnisse zum zweiten Lockdown: Unternehmensgewinne gehen weiter zurück, Unzufriedenheit mit Staatshilfen steigt stark an

Laura Arnemann Jannis Bischof Philipp Dörrenberg Fabian Eble Christopher Karlsson

10.52569/ovof2322

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Narratives about Fiscal Policy: Are Firm Decision-Makers’ Tax Preferences Driven by Redistribution or Fiscal Consolidation Motives?

Laura Arnemann Philipp Dörrenberg Fabian Eble Davud Rostam‐Afschar Johannes Voget

Redistribution

Consolidation

10.2139/ssrn.5147248

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Total Sleep Deprivation Followed by Bright Light Therapy as Rapid Relief for Depression: A Pragmatic Randomized Controlled Trial

Frontiers in Psychiatry (2021)

Michael Ioannou Zoltán Szabó Mats Widmark-Jensen Georgios Vyrinis Christopher Karlsson

Background: Total sleep deprivation (TSD) combined with bright light therapy (BLT) has been suggested as a valuable add-on to standard treatment for rapid relief of depression. However, there is a lack of randomized controlled trials in real-life clinical settings. The aim of this pragmatic randomized clinical trial was to investigate the effectiveness, acceptance, and feasibility of TSD combined with BLT as add-on to standard treatment for depression in a real-life clinical setting. Methods: Thirty-three inpatients were randomly assigned to either: a) an intervention group receiving a single-night TSD followed by 6 days BLT (10.000 lux, 30 min/day) as add-on to standard treatment; or b) a control group receiving a short sleep-hygiene consultation in addition to standard treatment. The follow-up period was 1 week. Results: No statistical differences were found in response rates, reduction of depressive and insomnia symptoms, length of stay, readmission rate, and clinical improvement. Both groups reported positive experiences toward the received treatment with low drop-out rates. Conclusions: One-night TSD followed by BLT was not effective as a rapid relief for depression at 1-week follow-up; however, the treatment was feasible and well-tolerated.

Light therapy

Depression

Sleep hygiene

10.3389/fpsyt.2021.705090

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German Business Panel: Empirische Evidenz zu den Auswirkungen der Corona-Krise auf deutsche Unternehmen

Jannis Bischof Philipp Dörrenberg Fabian Eble Christopher Karlsson Davud Rostam‐Afschar

Das German Business Panel liefert zeitnahe Indikatoren, welche Auswirkungen der Verlauf der Corona-Krise auf deutsche Unternehmen hat und wie diese auf die wirtschaftlichen Herausforderungen reagieren. Die Daten belegen, dass das Jahr 2020 fur die Unternehmen erhebliche Belastungen von Umsatz und Gewinn gebracht hat. Die Verscharfung des Lockdowns im Dezember hat zwar insgesamt nur geringe zusatzliche Effekte gezeigt, dabei allerdings Gewinne innerhalb von Branchen umverteilt. In der zweiten Jahreshalfte ist die Zufriedenheit mit der Ausgestaltung der Staatshilfen leicht angestiegen. Durch deren verbesserte Ausgestaltung konnte zwar ein weiterer Gewinnruckgang aufgehalten werden. Der Ausblick auf die gesamtwirtschaftliche Entwicklung und Unternehmensausfalle im Jahr 2021 hat sich allerdings gleichzeitig deutlich verschlechtert.

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