@article{HaileKalkuhlAlgierietal.2017, author = {Haile, Mekbib Gebretsadik and Kalkuhl, Matthias and Algieri, Bernardina and Gebreselassie, Samuel}, title = {Price shock transmission}, series = {Agricultural economics}, volume = {48}, journal = {Agricultural economics}, number = {6}, publisher = {Wiley}, address = {Hoboken}, issn = {0169-5150}, doi = {10.1111/agec.12373}, pages = {769 -- 780}, year = {2017}, abstract = {This study assesses the degree of vertical price transmission along the wheat-bread value chain in Ethiopia. This is pursued by applying a vector error correction model and an impulse response analysis using monthly price data for the period 2000-2015. Our analysis considers transmission of price shocks across different market levels, including from the international and domestic wheat grain markets at the upstream to the domestic wheat bread market at the downstream of the value chain. The empirical findings indicate that significant cointegration exists across prices of the different market stages. There is a transmission from international prices to domestic prices at downstream markets, in particular to flour and bread prices. Prices at upstream markets are largely influenced by the domestic wholesale market. In general, the speed of adjustment is quite slow with a half-life of about one year for restoring the equilibrium price relationship. As price margins between the different market stages in the value chain have substantially decreased in the last 15 years, higher transmission, and thus exposure to international market shocks, can be expected in the future. The results also show that causal relationships exist between prices at different market stageswith the wholesale market identified as the key market level where prices and price expectations are formed.}, language = {en} } @article{HauptBenderFabianetal.2018, author = {Haupt, Johannes and Bender, Benedict and Fabian, Benjamin and Lessmann, Stefan}, title = {Robust identification of email tracking}, series = {European Journal of Operational Research}, volume = {271}, journal = {European Journal of Operational Research}, number = {1}, publisher = {Elsevier}, address = {Amsterdam}, issn = {0377-2217}, doi = {10.1016/j.ejor.2018.05.018}, pages = {341 -- 356}, year = {2018}, abstract = {Email tracking allows email senders to collect fine-grained behavior and location data on email recipients, who are uniquely identifiable via their email address. Such tracking invades user privacy in that email tracking techniques gather data without user consent or awareness. Striving to increase privacy in email communication, this paper develops a detection engine to be the core of a selective tracking blocking mechanism in the form of three contributions. First, a large collection of email newsletters is analyzed to show the wide usage of tracking over different countries, industries and time. Second, we propose a set of features geared towards the identification of tracking images under real-world conditions. Novel features are devised to be computationally feasible and efficient, generalizable and resilient towards changes in tracking infrastructure. Third, we test the predictive power of these features in a benchmarking experiment using a selection of state-of-the-art classifiers to clarify the effectiveness of model-based tracking identification. We evaluate the expected accuracy of the approach on out-of-sample data, over increasing periods of time, and when faced with unknown senders. (C) 2018 Elsevier B.V. All rights reserved.}, language = {en} } @article{BalderjahnPeyerSeegebarthetal.2018, author = {Balderjahn, Ingo and Peyer, Mathias and Seegebarth, Barbara and Wiedmann, Klaus-Peter and Weber, Anja}, title = {The many faces of sustainability-conscious consumers}, series = {Journal of Business Research}, volume = {91}, journal = {Journal of Business Research}, publisher = {Elsevier}, address = {New York}, issn = {0148-2963}, doi = {10.1016/j.jbusres.2018.05.022}, pages = {83 -- 93}, year = {2018}, abstract = {Responding to the global call for a "sustainable economy" requires meaningful insights into sustainability-conscious consumers and their actual buying behaviors. Sustainable consumption is not an all-or-nothing phenomenon because it encompasses several distinct behavioral patterns and consumption types. Therefore, companies are well advised to recognize multiple types of sustainability-conscious consumers with different expectations, attitudes, and values and to implement targeting strategies that do not rest on the assumption of homogeneity. Thus, the objective of this study is to provide a more fine-grained picture of (un)sustainable consumer segments and their differentiated effects in different product markets. Based on three large datasets, we create a robust six-segment typology of consumer consciousness regarding sustainable consumption. By using panel data on actual purchases, the results show not only that sustainability concerns significantly positively influence actual sustainable purchases, as expected, but also that sustainable buying can occur independently of sustainability concerns.}, language = {en} } @phdthesis{Eydam2021, author = {Eydam, Ulrich}, title = {Essays on Macroeconomics}, school = {Universit{\"a}t Potsdam}, pages = {161}, year = {2021}, abstract = {This dissertation consists of four self-contained papers. Each paper deals with a specific macroeconomic question. The first paper assesses the distributional implications of environmental policies from a general equilibrium macroeconomic perspective. I develop a New-Keynesian model with several types of uncertainties and frictions that incorporates liquidity constrained households. The model is calibrated to match the German economy and the numerical results show that climate policy instruments can be associated with regressive welfare effects. Furthermore, the analysis shows that these effects can be mitigated through an appropriate revenue recycling scheme. The second paper deals with short-run inequality dynamics within a real business cycle model. An empirical evaluation shows that the cyclical components of income inequality, the capital share and real GDP are correlated. We develop tractable representation of common inequality indicators in the general equilibrium model and show that the observed pattern is driven by innovations in the capital share. A Bayesian estimation of the model for the United States with data for the period 1948 to 2017 indicates that the model provides a reasonable fit for the data and successfully replicates the observed pattern of cyclical correlations. The third paper empirically examines the effects of banking regulation on the risk-relationship between sovereigns and banks. Based on a comprehensive data set of the European banking sector, we find that the implementation of the novel European banking regulation framework significantly contributed to a weakening of the risk-link between sovereigns and banks.The fourth paper empirically examines the role of institutional experience for institutional development in transition economies. To capture institutional experience, we develop a novel index, based on historical country records. The results of cross-sectional and panel estimations suggest that institutional experience helps to explain the divergent economic and institutional development in transition economies after the dissolution of the Soviet Union.}, language = {de} } @article{ScheallSchumacher2018, author = {Scheall, Scott and Schumacher, Reinhard}, title = {Karl Menger as Son of Carl Menger}, series = {History of political economy}, volume = {50}, journal = {History of political economy}, number = {4}, publisher = {Duke Univ. Press}, address = {Durham}, issn = {0018-2702}, doi = {10.1215/00182702-7202512}, pages = {649 -- 678}, year = {2018}, abstract = {Relatively little is known about the relationship between Carl Menger, founder of the Austrian school of economics, and his son, Karl Menger, the mathematician, geometer, logician, and philosopher of science, whose mathematical colloquium at the University of Vienna was essential for the development of mathematical economics. Based on Karl Menger's diaries and correspondence, the present paper considers the development and struggles of the young Karl Menger, focusing on the years 1919-23, when Vienna was a vanquished city. We discuss the various relations within the Menger family and their significance for Karl Menger's intellectual development. Additionally, we consider his acquaintances with economists such as Knut Wicksell, David Davidson, and Eli Heckscher as well as the younger Menger's work in economics. We shed new light on his editorship of the second edition of his father's Grunds{\"a}tze der Volkswirtschaftslehre.}, language = {en} } @article{SchinkoethBrand2020, author = {Schink{\"o}th, Michaela and Brand, Ralf}, title = {Automatic associations and the affective valuation of exercise}, series = {German Journal of Exercise and Sport Research}, volume = {50}, journal = {German Journal of Exercise and Sport Research}, number = {654}, publisher = {Springer}, address = {Berlin ; Heidelberg}, issn = {2509-3150}, doi = {10.1007/s12662-020-00664-9}, pages = {366 -- 376}, year = {2020}, abstract = {The decision to exercise is not only bound to rational considerations but also automatic affective processes. The affective-reflective theory of physical inactivity and exercise (ART) proposes a theoretical framework for explaining how the automatic affective process (type‑1 process) will influence exercise behavior, i.e., through the automatic activation of exercise-related associations and a subsequent affective valuation of exercise. This study aimed to empirically test this assumption of the ART with data from 69 study participants. A single-measurement study, including within-subject experimental variation, was conducted. Automatic associations with exercise were first measured with a single-target implicit association test. The somato-affective core of the participants' automatic valuation of exercise-related pictures was then assessed via heart rate variability (HRV) analysis, and the affective valence of the valuation was tested with a facial expression (FE; smile and frown) task. Exercise behavior was assessed via self-report. Multiple regression (path) analysis revealed that automatic associations predicted HRV reactivity (β = -0.24, p = .044); the signs of the correlation between automatic associations and the smile FE score was in the expected direction but remained nonsignificant (β = -0.21, p = .078). HRV reactivity predicted self-reported exercise behavior (β = -0.28, p = .013) (the same pattern of results was achieved for the frown FE score). The HRV-related results illustrate the potential role of automatic negative affective reactions to the thought of exercise as a restraining force in exercise motivation. For better empirical distinction between the two ART type‑1 process components, automatic associations and the affective valuation should perhaps be measured separately in the future. The results support the notion that automatic and affective processes should be regarded as essential aspects of the motivation to exercise.}, language = {en} } @article{SchosserStroebele2019, author = {Schosser, Josef and Str{\"o}bele, Heiko}, title = {What is the value of Facebook?}, series = {Journal of risk finance}, volume = {20}, journal = {Journal of risk finance}, number = {3}, publisher = {Emerald Group Publishing Limited}, address = {Bingley}, issn = {1526-5943}, doi = {10.1108/JRF-05-2018-0069}, pages = {267 -- 290}, year = {2019}, abstract = {On May 17, 2012, the social networking company Facebook Inc. fixes its initial public offering (IPO) price at \$38.00 a share. Over the next couple of months, contrary to expectations raised by previous IPOs, the stock price crashes more than 50 per cent. Immediately, the question arises whether the issuer's or the stock market's pricing of the share are in line with the firm's fundamentals. Thus, the purpose of this paper is to determine the company value in close proximity to the date of IPO.}, language = {en} } @phdthesis{Diab2020, author = {Diab, Sarah}, title = {Der Einfluss von nachhaltigem Konsumbewusstsein auf Luxuskonsum unter Ber{\"u}cksichtigung verschiedener Moderatoren}, school = {Universit{\"a}t Potsdam}, pages = {259}, year = {2020}, abstract = {Das Ziel der vorliegenden Dissertation war es herauszuarbeiten, ob Nachhaltigkeitsbewusstsein den Konsum von Luxusg{\"u}tern beeinflusst und ob verschiedene Moderatoren einen Einfluss auf diesen Zusammenhang aus{\"u}ben. Das Nachhaltigkeitsbewusstsein wurde dabei basierend auf dem von Balderjahn et al. (2013) entwickelten Consciousness-for-sustainable-consumption-Modell durch die {\"o}kologische, soziale und die {\"o}konomische Nachhaltigkeit sowie erg{\"a}nzend durch das Tierschutzbewusstsein und Bewusstsein f{\"u}r lokale Produktion repr{\"a}sentiert. Als Moderatoren dienten das Streben nach sozialer Anerkennung und Prestige, Materialismus, Hedonismus und Traditionsbewusstsein. F{\"u}r die Aufdeckung m{\"o}glicher Zusammenh{\"a}nge zwischen den verschiedenen Dimensionen der Nachhaltigkeit und Luxuskonsum wurde eine Pr{\"a}diktorenanalyse durchgef{\"u}hrt. Moderatorenanalysen offenbarten zus{\"a}tzlich, ob ein Einfluss der verschiedenen Moderatoren auf die einzelnen Zusammenh{\"a}nge vorlag. Die Untersuchung zeigte, dass jeweils das Umweltbewusstsein, das Bewusstsein f{\"u}r gen{\"u}gsamen Konsum sowie das Bewusstsein f{\"u}r schuldenfreien Konsum als Teil der {\"o}konomischen Nachhaltigkeit und das Tierschutzbewusstsein einen Einfluss auf den Luxuskonsum aus{\"u}ben. Dar{\"u}ber hinaus konnten insgesamt sieben Einfl{\"u}sse durch die verschiedenen Moderatorvariablen auf die unterschiedlichen Zusammenh{\"a}nge zwischen den Nachhaltigkeitsdimensionen und Luxuskonsum aufgedeckt werden.}, language = {de} } @misc{MeierMetteHolzendorf2018, author = {Meier, Bernd and Mette, Dieter and Holzendorf, Ulf}, title = {Startklar! - Sekundarstufe I}, editor = {Holzendorf, Ulf}, edition = {differenzierende Ausgabe, 1. Auflage, 2. Druck}, publisher = {Oldenburg-Schulbuchverlag}, address = {M{\"u}nchen}, isbn = {978-3-637-02245-4}, pages = {184}, year = {2018}, language = {de} } @book{Juchler2020, author = {Juchler, Ingo}, title = {Die DDR im Jahr 1989}, publisher = {Landeszentrale f{\"u}r politische Bildung Th{\"u}ringen}, address = {Erfurt}, isbn = {978-3-948643-07-2}, pages = {152}, year = {2020}, language = {de} }