Externe referierte Aufsätze

The Impact of Private Hosting on the Integration of Ukrainian Refugees in Germany

Amid the Ukrainian displacement crisis, private hosting of refugees in Europe has surged, yet its impact on integration remains understudied. This research examines the short- to medium-term effects of private hosting on Ukrainian refugee integration in Germany. Using data from one of the largest non-profit platforms that matches private hosts with refugees, we compare the multidimensional integration ...

Stock Market Participation, Work from Home, and Inequality

Stock market participation among working household heads jumped upwards in 2020 - in Germany by about 25 %. A major cause is the required use of work from home (WfH). We show this by adding WfH to a large set of explanatory variables. Moreover, we implement an instrumental variables estimation based on industry-specific levels of WfH-capacity. The transmission channels seem to work via increased available ...

EU Power Market Reform Toward Locational Pricing: Rewarding Flexible Consumers for Resolving Transmission Constraints

The ongoing expansion of wind and solar electricity generation alongside increasing electrification is leading to a considerable strain on transmission capacities and grid bottlenecks in the EU. Coping with this challenge requires increasing system flexibility, e.g. by exploiting the potential for demand-side flexibility. However, in the current market design, demand-side flexibility responds to zonal ...

The Educational Wealth Divide in Europe: Post-Secondary Enrollment Gaps Across Parental Wealth Components and Countries

Parental wealth is a crucial dimension of socioeconomic status (SES) and plays a significant role in the intergenerational transmission of educational advantage. Previous research on the topic has been limited to a small number of countries, and findings on the relationship between parental wealth and educational attainment are hardly comparable across institutional contexts. Furthermore, the specific ...

Complementary Funding: How Location Links Crowdfunding and Venture Capital

While Equity Crowdfunding (ECF) platforms are a virtual space for raising funds, geography remains relevant. To determine how location matters for entrepreneurs using equity crowdfunding (ECF), we analyze the spatial distribution of successful ECF campaigns and the spatial relationship between ECF campaigns and traditional investors, such as banks and venture capitalists (VCs). Using data from the ...

Mapping Life Satisfaction Over the First Years of Cohabitation Among Former Singles Living Alone in UK and Germany

Objective: As social norms and relationship dynamics evolve, it is important to examine how transitions from singlehood to partnership, cohabitation, and marriage relate to well-being Method: Using data from two large panel studies in the UK and Germany (1984–2019), we identified N = 27,459 individuals who reported being single and living alone at least once. Analyses focused on a subset (N = 1103; ...

Support for Everyone or Selection of Some? Self-Selection and Assignment Into a Large-Scale Refugee Mentoring Program in Germany

Mentoring has become a popular support strategy for recently arrived immigrants and refugees, offering access to valuable information and resources. However, little is known about selection processes into mentoring programs—who chooses to enrol, who receives support, and whether these patterns are systematic. Such selection affects not only program evaluations but also broader issues of refugee integration ...

Wettbewerbspolitik und Industriepolitik unter einem Hut

Handelskonflikte, geopolitische Spannungen, digitale Disruption und Klimakrise stellen Deutschland und Europa vor große Herausforderungen. Wie beispielsweise im Draghi-Bericht gefordert, können die Staaten in Reaktion darauf industriepolitische Maßnahmen ergreifen, um die Ökonomie neu auszurichten und damit die Wettbewerbsfähigkeit zu steigern und die Resilienz zu stärken. In diesem Beitrag weisen ...

Buyer Power and the Effect of Vertical Integration on Innovation

Our article investigates the impact of vertical integration (without foreclosure) on innovation. We compare cases where either (i) two manufacturers or (ii) a manufacturer and a vertically integrated retailer invest. Then, the independent manufacturer(s) and the retailer bargain over nonlinear contracts before selling to consumers. We show that vertical integration always increases the incentives to ...

Utilisation of Reactive Ionic Liquids for Energy Storage and Regulation of the Power Grid

Chlorine is an essential feedstock for polymers and pharmaceuticals, with annual production exceeding 100 Mt. Nearly all Cl2 is obtained by chlor–alkali electrolysis, which consumes about 2.58 MWh of electricity per tonne. Renewable energies such as wind and solar would lower CO2 emissions, but electrolysers would then have to adopt to fluctuating, renewable energies while downstream processes still ...

Effects of Changing the Incentive Strategy on Panel Performance: Experimental Evidence From a Probability-Based Online Panel of Refugees

This study investigated how changing the mode of incentive administration between two panel waves, spaced six months apart, affected longitudinal survey response. A split-ballot incentive experiment was used to compare shifting from an unconditional pre-paid incentive mode in the first wave to a conditional post-paid mode in the second wave, versus consistently using a conditional post-paid mode across ...

Post-Migration Stress Mediates Associations Between Potentially Traumatic Peri-Migration Experiences and Mental Health Among Middle Eastern Refugees in Germany

Background On their way to host countries, refugees are often exposed to severe adversity, including cumulative experiences of fraud, extortion, robbery, detention, and shipwrecks, as well as prolonged, life-threatening small boat crossings. However, little research has examined the long-term impact of such peri-migration stressors on subsequent stress and mental health after arrival. This study explored ...

Determinants of Stock Market Participation

The low degree of stock market participation (SMP) is one of the big puzzles in finance. Numerous determinants have been proposed. We put these determinants into a structure that is derived from a standard static portfolio model. Then we discuss arguments put forward regarding specific SMP determinants and the empirical evidence that has been provided. The focus of our survey is on the identification ...

Asylum Seekers and Host Country Mental Health: Evidence from Germany and Switzerland

Due to recent conflicts and humanitarian issues, millions of people have sought asylum in countries in Europe. The influx of asylum seekers has sparked debates about the impacts of such migratory flows on resident populations. We study how the recent migration of these forcibly displaced people into Europe affects the mental health of the receiving country residents in Switzerland and Germany. We exploit ...

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Solar Prosumage Under Different Pricing Regimes: Interactions with the Transmission Grid

Residential electricity consumers equipped with photovoltaic (PV) systems and battery storage, also referred to as solar prosumers, are transforming electricity markets. While previous research has dealt with various aspects of solar prosumage, dedicated analyses of their interactions with the transmission grid under varying tariff designs are sparse. We explore the influence of different pricing regimes ...

Flexible Nuclear Power and Fluctuating Renewables? An Analysis for Decarbonized Multi-Vector Energy Systems

Many governments consider new nuclear power plants to promote decarbonization. On the one hand, dispatchable nuclear plants can complement fluctuating generation from wind and PV. On the other hand, escalating construction costs and times raise economic concerns. This paper investigates the economic threshold at which nuclear plants are an efficient decarbonization option. Building on an extensive ...

Exploring Integration and Migration Dynamics: The Research Potentials of a Large-Scale Longitudinal Household Study of Refugees in Germany

Education Bias in Probability-Based Surveys in Germany: Evidence and Possible Solutions

This paper outlines two studies on education bias in German probability-based surveys. Study 1 reviews data from 67 surveys across 19 survey programs conducted in Germany from 2000 to 2023. We found a consistent underrepresentation of individuals with a low level of formal education. We also found that the transition to self-administered modes due to rising survey costs may exacerbate this bias in ...

Does the Impact of Pupil Absences on Achievement Depend on Their Timing?

Using linked data from the Millennium Cohort Study and National Pupil Database (N = 8,139), this study examined how the timing of school absences (years 1 to 11 between 2006 and 2017) affects achievement at the end of compulsory schooling in England. Absences during any school year are harmful to student achievement. However, absences in years 1 and 6 (the final year of primary school), and between ...