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Hauptbeschreibung The analysis of cyclical macroeconomic phenomena is an important field of econometric research. In the recent past, research interests have de-emphasized quantitative forecasting exercises and have addressed the qualitative diagnosis of the relative stance of the economy regarding ""upswing"", ""recession"", or ""boom"" periods, i. e. the classification of the state of the economy into a limited number of discrete states. In this context the principal challenge is to reduce the multifaceted and sometimes abundant quantitative information about the business cycle to

Business cycles --- Statistics --- Economic cycles --- Economic fluctuations --- Cycles --- Makroökonomie --- Business Cycle --- Cluster

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This paper identifies and describes the key features of Australian business cycles during 1959-2000. In particular, we identify the chronologies in Australia's classical cycle (expansions and contractions in the level of output) and growth cycle (periods of above-trend and below-trend rates of economic growth). We find that while there are large asymmetries in the duration and amplitude of phases in Australia's classical cycle, on both measures the Australian growth cycle is much more symmetric. Further, our results indicate that over the sample period Australian (filtered) output and prices have moved in a counter-cyclical fashion, suggesting a dominance of shocks to aggregate supply affecting the Australian economy.

Macroeconomics --- Time-Series Models --- Dynamic Quantile Regressions --- Dynamic Treatment Effect Models --- Diffusion Processes --- State Space Models --- Business Fluctuations --- Cycles --- Prices, Business Fluctuations, and Cycles: General (includes Measurement and Data) --- Price Level --- Inflation --- Deflation --- Economic growth --- Business cycles --- Prices --- Australia

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Impacts of Climate Change on Rainfall Extremes and Urban Drainage Systems provides a state-of-the-art overview of existing methodologies and relevant results related to the assessment of the climate change impacts on urban rainfall extremes as well as on urban hydrology and hydraulics. This overview focuses mainly on several difficulties and limitations regarding the current methods and discusses various issues and challenges facing the research community in dealing with the climate change impact assessment and adaptation for urban drainage infrastructure design and management

Rainfall anomalies. --- Drainage --- Climatic changes --- Changes, Climatic --- Changes in climate --- Climate change --- Climate change science --- Climate changes --- Climate variations --- Climatic change --- Climatic fluctuations --- Climatic variations --- Global climate changes --- Global climatic changes --- Climatology --- Climate change mitigation --- Teleconnections (Climatology) --- Anomalies, Rainfall --- Fluctuations, Rainfall --- Rainfall fluctuations --- Precipitation anomalies --- Rain and rainfall --- Land drainage --- Agricultural engineering --- Hydraulic engineering --- Reclamation of land --- Sanitary engineering --- Sewerage --- Environmental aspects. --- Environmental aspects --- Global environmental change

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This paper develops an aggregation procedure using time-varying weights for constructing the common component of international economic fluctuations. The methodology for deriving time-varying weights is based on some stylized features of the data documented in the paper. The model allows for a unified treatment of cyclical and seasonal fluctuations and also captures the dynamic propagation of shocks across countries. Correlations of individual country fluctuations with the common component provide evidence of a “world business cycle” and a distinct European common component. The results suggest that macroeconomic fluctuations have become more closely linked across industrial economies in the post–Bretton Woods period.

Econometrics --- Macroeconomics --- Industries: General --- Business Fluctuations --- Cycles --- Model Construction and Estimation --- Prices, Business Fluctuations, and Cycles: Forecasting and Simulation --- Macroeconomics: Production --- Prices, Business Fluctuations, and Cycles: General (includes Measurement and Data) --- Classification Methods --- Cluster Analysis --- Principal Components --- Factor Models --- Industrial Organization: General --- Economic growth --- Econometrics & economic statistics --- Industrial production --- Production growth --- Business cycles --- Factor models --- Industrial sector --- Production --- Econometric analysis --- Economic sectors --- Industries --- Economic theory --- Econometric models --- United States

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This paper presents a "bridge model" for short-run (one or two quarters ahead) forecasting of Italian GDP, relying on industrial production and survey indicators as key variables that can help in providing a real-time first GDP estimate. For a one- to two-year horizon, it formulates and estimates a Bayesian VAR (BVAR) model of the Italian economy. Both the "bridge" and the BVAR model can be of great help in supplementing traditional judgmental or structural econometric forecasts. Given their simplicity and their good forecasting power, the framework may be usefully extended to other variables as well as to other countries.

Econometrics --- Macroeconomics --- Industries: General --- Bayesian Analysis: General --- Time-Series Models --- Dynamic Quantile Regressions --- Dynamic Treatment Effect Models --- Diffusion Processes --- State Space Models --- Business Fluctuations --- Cycles --- Prices, Business Fluctuations, and Cycles: Forecasting and Simulation --- Macroeconomics: Production --- Prices, Business Fluctuations, and Cycles: General (includes Measurement and Data) --- Forecasting and Simulation: Models and Applications --- Economic growth --- Econometrics & economic statistics --- Economic Forecasting --- Cyclical indicators --- Industrial production --- Vector autoregression --- GDP forecasting --- Production index --- Production --- Econometric analysis --- National accounts --- Business cycles --- Industries --- National income --- Economic theory --- United States