@techreport{HassSchoeler1996, type = {Working Paper}, author = {Hass, Dirk and Sch{\"o}ler, Klaus}, title = {Exportsubventionen im internationalen r{\"a}umlichen Oligopol}, url = {http://nbn-resolving.de/urn:nbn:de:kobv:517-opus-13547}, year = {1996}, abstract = {Inhalt - Einf{\"u}hrung - Ausnahmen und Grundmodelle - Wohlfahrtswirkungen von Exportsubventionen - Abschließende {\"U}berlegungen}, language = {de} } @techreport{Becker2004, type = {Working Paper}, author = {Becker, Ralf E.}, title = {Revisiting public investment}, issn = {0948-7549}, url = {http://nbn-resolving.de/urn:nbn:de:kobv:517-opus-9025}, year = {2004}, abstract = {The consumption equivalence method is the theoretical basis of public cost-benefit analysis. Consumption equivalence public capital prices are explicitly introduces in order to sufficiently care for the opportunity cost of public expenditure. This can solve the dispute about the social rate of discount within public cost-benefit analysis witch was generated on a criterion looking similar to the capital value formula, known as Lind's approach. The social rate of discount is liberated from opportunity costs considerations and the discounting away of the effects for future welfare vanishes. The corresponding question whether one should accept a positive value of the pure rate of social time preference is an old issue. Its current state between the prescriptive and descriptive view can also be interpreted as a consequence of the oversimplification of standard cost- benefit analysis. But apart from an economic self-process the pure rate of social time preference is also defined as a business-as-usual value of social distance discounting. Hence, a political choice has to be made about this rate which is free in principal.}, language = {en} } @techreport{Becker2004, type = {Working Paper}, author = {Becker, Ralf E.}, title = {General classification of social choice situations}, series = {Finanzwissenschaftliche Diskussionsbeitr{\"a}ge}, journal = {Finanzwissenschaftliche Diskussionsbeitr{\"a}ge}, number = {46}, issn = {0948-7549}, url = {http://nbn-resolving.de/urn:nbn:de:kobv:517-opus-9012}, year = {2004}, abstract = {An exhaustive and disjoint decomposition of social choice situations is derived in a general set theoretical framework using the new tools of the Lifted Pareto relation on the power set of social states representing a pre-choice comparison of choice option sets. The main result is the classification of social choice situations which include three types of social choice problems. First, we usually observe the common incompleteness of the Pareto relation. Second, a kind of non-compactness problem of a choice set of social states can be generated. Finally, both can be combined. The first problem root can be regarded as natural everyday dilemma of social choice theory whereas the second may probably be much more due to modeling technique implications. The distinction is enabled at a very general set theoretical level. Hence, the derived classification of social choice situations is applicable on almost every relevant economic model.}, language = {en} } @techreport{Drechsler2005, type = {Working Paper}, author = {Drechsler, Denis}, title = {Unemployment in Germany and the Eurosclerosis debate}, url = {http://nbn-resolving.de/urn:nbn:de:kobv:517-opus-9036}, year = {2005}, abstract = {Many European countries have experienced a significant increase of unemployment in recent years. This paper reviews several theoretical models that try to explain this phenomenon. Predominantly, these models claim a link between the poor performance of European labor markets and the high level of market regulation. Commonly referred to as the Eurosclerosis debate, prominent approaches consider insider-outsider relationships, search-models, and the influence of hiring and firing costs on equilibrium employment. The paper presents empirical evidence of each model and studies the relevance of the identified rigidities as a determinant of high unemployment in Europe. Furthermore, a case study analyzes the unemployment problem in Germany and critically discusses new reform efforts. In particular this section analyzes whether the recently enacted Hartz reforms can induce higher employment.}, language = {en} } @techreport{Eberhardt2005, type = {Working Paper}, author = {Eberhardt, Bj{\"o}rn}, title = {Public pensions in the U.S.}, url = {http://nbn-resolving.de/urn:nbn:de:kobv:517-opus-9058}, year = {2005}, abstract = {Contents: The Public Old Age Insurance of the U.S. -Historical overview -Technical details -Individual equity and social adequacy The Economic Problem of Old Age -Risks and economic security -Old age, retirement, and idividual precaution -Insurance markets, market failures, and social insurance -Options for public pension systems The Problems of Social Security -The financial balance of OASDI -Causes of the long-run problems -Rates of return -Conclusion - The case for Social Security reform Proposed Remedies -Full, partial, or no privatization? -The President's Commission to Strengthen Social Security -Kotlikoff's Personal Security System -The Diamond-Orszag Three-Part plan}, language = {en} } @techreport{Nastansky2019, type = {Working Paper}, author = {Nastansky, Andreas}, title = {Topologische Datenanalyse}, series = {Statistische Diskussionsbeitr{\"a}ge}, journal = {Statistische Diskussionsbeitr{\"a}ge}, number = {53}, doi = {10.25932/publishup-43142}, url = {http://nbn-resolving.de/urn:nbn:de:kobv:517-opus4-431420}, pages = {38}, year = {2019}, abstract = {Bei der Analyse von h{\"o}herdimensionalen Daten kann deren Gestalt wichtige Informationen {\"u}ber den Datensatz liefern. Bei einer gegebenen Punktwolke, die aus einem unbekannten topologischen Raum ausgew{\"a}hlt wurde, versucht die Topologische Datenanalyse (TDA) den urspr{\"u}nglichen Raum zu rekonstruieren. Dieser Beitrag soll eine Einf{\"u}hrung in die Topologische Datenanalyse geben und konzentriert sich dabei auf zwei wichtige Aspekte: die Persistente Homologie und den Mapper. Dabei werden zuerst die notwendigen theoretischen Grundlagen vorgestellt und anschließend wird die Methodik bei der Visualisierung von Daten eingesetzt. Die Persistente Homologie ist eines der Standardwerkzeuge in der TDA. Sie findet ihre Anwendung beispielsweise in den Bereichen Formerkennung und -beschreibung. Der Mapper als zweites wichtiges Konzept der TDA wandelt umfangreiche, h{\"o}herdimensionale Datens{\"a}tze in Simplizialkomplexe um und kann dadurch geometrische und topologische Eigenschaften der Daten bestimmen. Des Weiteren ist die Mapper-Methode ein brauchbares Werkzeug zur Visualisierungen von mehrdimensionalen Daten, woran statistische Verfahren scheitern.}, language = {de} } @techreport{MuellerWrohlich2019, type = {Working Paper}, author = {M{\"u}ller, Kai-Uwe and Wrohlich, Katharina}, title = {Does subsidized care for toddlers increase maternal labor supply?}, series = {CEPA Discussion Papers}, journal = {CEPA Discussion Papers}, number = {9}, issn = {2628-653X}, doi = {10.25932/publishup-42772}, url = {http://nbn-resolving.de/urn:nbn:de:kobv:517-opus4-427727}, pages = {50}, year = {2019}, abstract = {Expanding public or publicly subsidized childcare has been a top social policy priority in many industrialized countries. It is supposed to increase fertility, promote children's development and enhance mothers' labor market attachment. In this paper, we analyze the causal effect of one of the largest expansions of subsidized childcare for children up to three years among industrialized countries on the employment of mothers in Germany. Identification is based on spatial and temporal variation in the expansion of publicly subsidized childcare triggered by two comprehensive childcare policy reforms. The empirical analysis is based on the German Microcensus that is matched to county level data on childcare availability. Based on our preferred specification which includes time and county fixed effects we find that an increase in childcare slots by one percentage point increases mothers' labor market participation rate by 0.2 percentage points. The overall increase in employment is explained by the rise in part-time employment with relatively long hours (20-35 hours per week). We do not find a change in full-time employment or lower part-time employment that is causally related to the childcare expansion. The effect is almost entirely driven by mothers with medium-level qualifications. Mothers with low education levels do not profit from this reform calling for a stronger policy focus on particularly disadvantaged groups in coming years.}, language = {en} } @techreport{AmannRzepka2021, type = {Working Paper}, author = {Amann, Erwin and Rzepka, Sylvi}, title = {The Effect of Goal-Setting Prompts in a Blended Learning Environment}, series = {CEPA Discussion Papers}, journal = {CEPA Discussion Papers}, number = {25}, issn = {2628-653X}, doi = {10.25932/publishup-49347}, url = {http://nbn-resolving.de/urn:nbn:de:kobv:517-opus4-493476}, pages = {22, vi}, year = {2021}, abstract = {We investigate how inviting students to set task-based goals affects usage of an online learning platform and course performance. We design and implement a randomized field experiment in a large mandatory economics course with blended learning elements. The low-cost treatment induces students to use the online learning system more often, more intensively, and to begin earlier with exam preparation. Treated students perform better in the course than the control group: they are 18.8\% (0.20 SD) more likely to pass the exam and earn 6.7\% (0.19 SD) more points on the exam. There is no evidence that treated students spend significantly more time, rather they tend to shift to more productive learning methods. The heterogeneity analysis suggests that higher treatment effects are associated with higher levels of behavioral bias but also with poor early course behavior.}, language = {en} } @techreport{MarcusSiedlerZiebarth2021, type = {Working Paper}, author = {Marcus, Jan and Siedler, Thomas and Ziebarth, Nicolas R.}, title = {The Long-Run Effects of Sports Club Vouchers for Primary School Children}, series = {CEPA Discussion Papers}, journal = {CEPA Discussion Papers}, number = {34}, issn = {2628-653X}, doi = {10.25932/publishup-50897}, url = {http://nbn-resolving.de/urn:nbn:de:kobv:517-opus4-508978}, pages = {72}, year = {2021}, abstract = {Starting in 2009, the German state of Saxony distributed sports club membership vouchers among all 33,000 third graders in the state. The policy's objective was to encourage them to develop a long-term habit of exercising. In 2018, we carried out a large register-based survey among several cohorts in Saxony and two neighboring states. Our difference-in-differences estimations show that, even after a decade, awareness of the voucher program was significantly higher in the treatment group. We also find that youth received and redeemed the vouchers. However, we do not find significant short- or long-term effects on sports club membership, physical activity, overweightness, or motor skills.}, language = {en} } @techreport{LudolphŠedova2021, type = {Working Paper}, author = {Ludolph, Lars and Šedov{\´a}, Barbora}, title = {Global food prices, local weather and migration in Sub-Saharan Africa}, series = {CEPA Discussion Papers}, journal = {CEPA Discussion Papers}, number = {26}, issn = {2628-653X}, doi = {10.25932/publishup-49494}, url = {http://nbn-resolving.de/urn:nbn:de:kobv:517-opus4-494946}, pages = {53}, year = {2021}, abstract = {In this paper, we study the effect of exogenous global crop price changes on migration from agricultural and non-agricultural households in Sub-Saharan Africa. We show that, similar to the effect of positive local weather shocks, the effect of a locally-relevant global crop price increase on household out-migration depends on the initial household wealth. Higher international producer prices relax the budget constraint of poor agricultural households and facilitate migration. The order of magnitude of a standardized price effect is approx. one third of the standardized effect of a local weather shock. Unlike positive weather shocks, which mostly facilitate internal rural-urban migration, positive income shocks through rising producer prices only increase migration to neighboring African countries, likely due to the simultaneous decrease in real income in nearby urban areas. Finally, we show that while higher producer prices induce conflict, conflict does not play a role for the household decision to send a member as a labor migrant.}, language = {en} }