Returns
Wissenschaftliche Fachliteratur
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Siham El Kihal
Product Return Management in Online Retailing
Electronic Commerce, Marketing & Finance
Online retailers are challenged by high return rates and the associated return costs. At the same time, they do not know whether their efforts should end with policy formulation, or if subsequent active return management has the potential to further improve profits. They also face several challenges when deciding on how to manage product returns, e.g., how to deal with abusive customers, or what to consider when implementing marketing activities and whether these could […]
Daniela Mast
Understanding and Predicting Demand Through Visual Characteristics and Neural Networks
Electronic Commerce, Marketing & Finance
Every season, online fashion retailers are confronted with the questions, which products to order and in what quantity. These questions are particularly important, because replenishment is difficult due to the short selling season and fashion products are perishable. Therefore, knowledge about typical product sales patterns and precise predictions can prevent costly over- or understocking for retailers.
From a theoretical perspective, fashion products are […]
Patrick Lehmann
Three Essays on the Returns of German Stocks and Mutual Funds
Das auf Englisch verfasste Buch beschäftigt sich mit zwei zentralen Themenfeldern der empirischen Kapitalmarktforschung. Zum einen mit der Frage, inwieweit es vorteilhaft ist, in deutsche Aktieninvestmentfonds zu investieren und zum anderen, ob das Capital Asset Pricing Model geeignet ist, die Renditen deutscher Aktien zu erklären. Die Ergebnisse der Forschungsarbeiten sind für langfristige Kapitalanleger, insbesondere für Altersvorsorgeüberlegungen, für Finanzmanager, […]
Thomas Topf
Care for the Elderly in Germany: Efficiency, Productivity and their Determinants
An Empirical Analysis for the Years 1999 to 2009
Schriftenreihe Gesundheitswissenschaften
By 2030 the number of persons of working age in Germany will drop by 7.5 million to 42.2 million, relative to the reference year 2008. Thus, the social security system in Germany faces a shrinking number of potential contributors while supporting a growing number of benefit recipients cared for by a shrinking number of potential nurses. One way to reduce the burden on the care insurance is to increase the efficiency and productivity of the production of elderly care […]
Manuel Schieler
Causal Inference in Empirical Applications Using Individual- and Aggregate-Level Data
Schriftenreihe volkswirtschaftliche Forschungsergebnisse
This thesis is structured in two main parts that contain our analyses using individualand aggregate-level data.
Our first part introduces a new dataset on the individual level, which we use to investigate economic questions in the fields of labor economics and economics of education. More specifically, it provides detailed information about graduates from a mid-size German university (Saarland University) and their respective careers. [...]
Manuel Weinmann
Earnings Forecast Modeling
A Systematic Approach
Equity analysts’ earnings forecasts, collected by the Institutional Brokers’ Estimate Service (IBES), Zacks and other news providers, serve as a central input in financial research. For example, Claus & Thomas (2001) use earnings forecasts to estimate the equity risk premium. The equity risk premium, defined as the excess of the expected return on the market over the risk-free rate, is most commonly estimated via historical averages of ex post realized returns due to the […]
Tobias Wickern
Multiple Testing Problems in the Context of Modern Portfolio Theory
A multiple testing problem occurs when two or more related null hypotheses are tested simultaneously. The classical significance level, which refers to the type I error of an individual test problem, is not suitable for testing a family of hypotheses. This is due to the fact that more than one true null hypothesis may erroneously be rejected. Several approaches to error control taking account of the multiplicity problem have been proposed. The focus of the present work is […]
Christoph Breig
Asset Pricing and Default Risk
Since several decades, the financial markets price large amounts of money held in securities that face systematic and idiosyncratic risk. Thus, many theoretical and empirical asset pricing papers have addressed issues around the relationship between stock markets and systematic risk. Among others the following research topics have been discussed: the predictability of stock markets, the impact of economy-wide risk factors on equity returns, the modeling of such risk […]
Jaba Ghonghadze
Essays on Micromotives and Macrobehavior, Expectation Formation, and Asset Price Dynamics
Schriftenreihe volkswirtschaftliche Forschungsergebnisse
This work collects the author’s recent investigations in interactions-based approaches in economics and finance that he undertook as a doctoral candidate in the program ‘‘Quantitative Economics‘‘ at the University of Kiel, Germany. The study is arranged in three parts and it contains seven chapters. The idea of the first part, a potential conflict between micromotives and macrobehavior, is reflected in two chapters. Chapter 1 is devoted to the formalization of Schelling‘s […]
Theo Berger
Dependency Modeling and Value-at-Risk Forecasts for Financial Portfolios
Forecasting Value-at-Risk (VaR) for financial portfolios is a staggering task in financial risk management. The turmoil in financial markets as observed since September 2008 called for more complex VaR models, as „standard“ VaR approaches failed to anticipate the collective market movements faced during the financial crisis. Hence, recent researchon portfolio management mainly focused on modeling return interdependencies via dynamic conditional correlations (DCC, Engle […]