37 research outputs found

    A Soft Budget Constraint Explanation for the Venture Capital Cycle

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    We explore why venture capital funds limit the amount of capital they raise and do not reinvest the proceeds. This structure is puzzling because it leads to a succession of several funds financing each new venture which multiplies the well known agency problems. We argue that an inside investor cannot provide a hard budget constraint while a less well informed outsider can. Therefore, the venture capitalist delegates the continuation decision to the outsider by ex ante restricting the amount of capital he has under management. The soft budget constraint problem becomes the more important the higher the entrepreneur’s private benefits are and the higher the probability of failure of a project is

    Predicting range shifts of African apes under global change scenarios

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    Aim: Modelling African great ape distribution has until now focused on current or past conditions, while future scenarios remain scarcely explored. Using an ensemble forecasting approach, we predicted changes in taxon-specific distribution under future scenarios of climate, land use and human populations for (1) areas outside protected areas (PAs) only (assuming complete management effectiveness of PAs), (2) the entire study region and (3) interspecies range overlap. Location: Tropical Africa. Methods: We compiled occurrence data (n = 5,203) on African apes from the IUCN A.P.E.S. database and extracted relevant climate-, habitat- and human-related predictors representing current and future (2050) conditions to predict taxon-specific range change under a best- and a worst-case scenario, using ensemble forecasting. Results: The predictive performance of the models varied across taxa. Synergistic interactions between predictors are shaping African ape distribution, particularly human-related variables. On average across taxa, a range decline of 50% is expected outside PAs under the best scenario if no dispersal occurs (61% in worst scenario). Otherwise, an 85% range reduction is predicted to occur across study regions (94% worst). However, range gains are predicted outside PAs if dispersal occurs (52% best, 21% worst), with a slight increase in gains expected across study regions (66% best, 24% worst). Moreover, more than half of range losses and gains are predicted to occur outside PAs where interspecific ranges overlap. Main Conclusions: Massive range decline is expected by 2050, but range gain is uncertain as African apes will not be able to occupy these new areas immediately due to their limited dispersal capacity, migration lag and ecological constraints. Given that most future range changes are predicted outside PAs, Africa\u27s current PA network is likely to be insufficient for preserving suitable habitats and maintaining connected ape populations. Thus, conservation planners urgently need to integrate land use planning and climate change mitigation measures at all decision-making levels both in range countries and abroad

    How Many Varieties of Capitalism? Comparing the Comparative Institutional Analyses of Capitalist Diversity

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    This essay reviews the development of approaches within the comparative capitalisms (CC) literature and points to three theoretical innovations which, taken together, define and distinguish these approaches as a group. First, national economies are characterized by distinct institutional configurations that generate a particular systemic 'logic' of economic action. Second, the CC literature suggests a theory of comparative institutional advantage in which different institutional arrangements have distinct strengths and weaknesses for different kinds of economic activity. Third, the literature has been interpreted to imply a theory of institutional path dependence. Behind these unifying characteristics of the literature, however, lie a variety of analytical frameworks and typologies of capitalism. This paper reviews and compares these different frameworks by highlighting the fundamental distinctions among them and drawing out their respective contributions and limitations in explaining economic performance and institutional dynamics. The paper concludes that the way forward for this literature lies in developing a more dynamic view of individual institutions, the linkages between domains, and the role of politics and power.In diesem Discussion Paper werden Ansätze der Comparative-Capitalism-Diskussion vorgestellt. Sie haben drei theoretische Innovationen gemein. Erstens: Nationale Ökonomien werden durch institutionelle Konfigurationen geprägt, die auf jeweils eigene "systemische Logiken" wirtschaftlichen Handelns hinwirken. Zweitens: Die Comparative-Capitalism-Literatur beinhaltet eine Theorie der komparativen institutionellen Vorteile, der zufolge institutionellen Konfigurationen spezifische Wettbewerbsvorteile zugeordnet werden können. Zudem, drittens, beinhaltet die Comparative-Capitalism-Literatur auch eine implizite Theorie der Pfadabhängigkeit. Trotz dieser Gemeinsamkeiten unterscheiden sich die Ansätze hinsichtlich analytischer Zugriffe und Vorschläge zur Typologisierung nationaler Kapitalismen. Beim Vergleich dieser Ansätze werden besonders deren Stärken und Schwächen bei der Analyse wirtschaftlicher Performanz und institutioneller Entwicklungsdynamiken hervorgehoben. Der Aufsatz kommt zu dem Schluss, dass die Comparative-Capitalism-Literatur in dreierlei Hinsicht der Weiterentwicklung bedarf: hinsichtlich einer dynamischeren Modellierung von Institutionen, einem besseren Verständnis der Interaktion institutioneller Domänen und der Berücksichtigung von Macht und Politik in der Analyse von Produktionsregimen

    Things We Do for No Reason: Routine Echocardiography in Hemodynamically Stable Patients with Acute Pulmonary Embolism

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    Diagnostic Failures in Asthma

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    Atrioventricular Heart Block and Syncope Coincident With Diagnosis of Systemic Lupus Erythematosus

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    We describe a 59-year-old woman with cardiac conduction abnormalities caused by lupus-induced myocardial damage. She had a history of arthralgias and antinuclear antibodies but no clinical history of systemic lupus erythematosus. She presented with syncope and Mobitz type II second-degree atrioventricular block. Anti-double-stranded DNA antibodies developed coincident with the identification of heart block. Cardiac magnetic resonance imaging showed late enhancing foci of gadolinium uptake that anatomically correlated with her conduction abnormalities. We conclude that her conduction disease represents an early and structural cardiac manifestation of systemic lupus erythematosus that is unusual in its presentation at the time of initial diagnosis
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