964 resultados para real business cycles


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Mode of access: Internet.

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Binder's title.

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This doctoral thesis originates from an observational incongruence between the perennial aims and aspirations of economic endeavour and actually recorded outcomes, which frequently seem contrary to those intended and of a recurrent, cyclical type. The research hypothesizes parallel movement between unstable business environments through time, as expressed by periodically fluctuating levels of economic activity, and the precipitation rates of industrial production companies. A major problem arose from the need to provide theoretical and empirical cohesion from the conflicting, partial and fragmented interpretations of several hundred historians and economists, without which the research question would remain unanswerable. An attempt to discover a master cycle, or superimposition theorem, failed, but was replaced by minute analysis of both the concept of cycles and their underlying data-bases. A novel technique of congregational analysis emerged, resulting in an integrated matrix of numerical history. Two centuries of industrial revolution history in England and Wales was then explored and recomposed for the first time in a single account of change, thereby providing a factual basis for the matrix. The accompanying history of the Birmingham area provided the context of research into the failure rates and longevities of firms in the city's staple metal industries. Sample specific results are obtained for company longevities in the Birmingham area. Some novel presentational forms are deployed for results of a postal questionnaire to surviving firms. Practical demonstration of the new index of national economic activity (INEA) in relation to company insolvencies leads to conclusions and suggestions for further applications of research into the tempo of change, substantial Appendices support the thesis and provide a compendium of information covering immediately contiguous domains.

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The authors conduct a systematic investigation into the cyclical sensitivity of advertising expenditures in 37 countries, covering four key media: magazines, newspapers, radio, and television. They show that advertising is considerably more sensitive to business-cycle fluctuations than the economy as a whole. Advertising behaves less cyclically in countries high in long-term orientation and power distance, but it is more cyclical in countries high in uncertainty avoidance. Furthermore, advertising is more sensitive to the business cycle in countries characterized by significant stock market pressure and few foreign-owned multinational corporations. The authors provide initial evidence on the long-term social and managerial losses incurred when companies tie ad spending too tightly to business cycles. Countries in which advertising behaves more cyclically exhibit slower growth of the advertising industry. Moreover, private-label growth is higher in countries characterized by more cyclical advertising spending, implying significant losses for brand manufacturers. Finally, an examination of 26 global companies shows that stock price performance is lower for companies that exhibit stronger procyclical advertising spending patterns.

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A dolgozat alapja egy olyan Leontief-típusú gazdaság, ahol minden egyes ágazatban egy vállalat termel, tehát monopóliumokból áll a gazdaság. A vállalatok termelnek, és a termékeiket a piacon értékesítik. A gazdaság mozgásegyenleteit a vállalati mérleg összefüggések, valamint a piaci csere után a gazdaságban, a termékek készletváltozása írja le. Az így létrejött mozgásegyenletekből arra következtethetünk, hogy a ciklusok egy ilyen modellben szükségszerűen kialakulnak, tehát az üzleti ciklus a gazdaság működéséhez hozzátartozik. Journal of Economic Literature (JEL) kód: D46, E32. = The aim of the paper is to analyze a Leontief-type economy, i.e. all firms produce only one product and only one technology. The firms sell the products on a monopolistic market. The move of this economy is controlled by the balance sheet expressions and the inventory level fluctuations. The differential equations of the move of this economy show a cyclical movement of the economy along the balanced growth path. Journal of Economic Literature (JEL) kód: D46, E32.

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Il presente elaborato esplora l’attitudine delle organizzazioni nei confronti dei processi di business che le sostengono: dalla semi-assenza di struttura, all’organizzazione funzionale, fino all’avvento del Business Process Reengineering e del Business Process Management, nato come superamento dei limiti e delle problematiche del modello precedente. All’interno del ciclo di vita del BPM, trova spazio la metodologia del process mining, che permette un livello di analisi dei processi a partire dagli event data log, ossia dai dati di registrazione degli eventi, che fanno riferimento a tutte quelle attività supportate da un sistema informativo aziendale. Il process mining può essere visto come naturale ponte che collega le discipline del management basate sui processi (ma non data-driven) e i nuovi sviluppi della business intelligence, capaci di gestire e manipolare l’enorme mole di dati a disposizione delle aziende (ma che non sono process-driven). Nella tesi, i requisiti e le tecnologie che abilitano l’utilizzo della disciplina sono descritti, cosi come le tre tecniche che questa abilita: process discovery, conformance checking e process enhancement. Il process mining è stato utilizzato come strumento principale in un progetto di consulenza da HSPI S.p.A. per conto di un importante cliente italiano, fornitore di piattaforme e di soluzioni IT. Il progetto a cui ho preso parte, descritto all’interno dell’elaborato, ha come scopo quello di sostenere l’organizzazione nel suo piano di improvement delle prestazioni interne e ha permesso di verificare l’applicabilità e i limiti delle tecniche di process mining. Infine, nell’appendice finale, è presente un paper da me realizzato, che raccoglie tutte le applicazioni della disciplina in un contesto di business reale, traendo dati e informazioni da working papers, casi aziendali e da canali diretti. Per la sua validità e completezza, questo documento è stata pubblicato nel sito dell'IEEE Task Force on Process Mining.

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Employing an endogenous growth model with human capital, this paper explores how productivity shocks in the goods and human capital producing sectors contribute to explaining aggregate fluctuations in output, consumption, investment and hours. Given the importance of accounting for both the dynamics and the trends in the data not captured by the theoretical growth model, we introduce a vector error correction model (VECM) of the measurement errors and estimate the model’s posterior density function using Bayesian methods. To contextualize our findings with those in the literature, we also assess whether the endogenous growth model or the standard real business cycle model better explains the observed variation in these aggregates. In addressing these issues we contribute to both the methods of analysis and the ongoing debate regarding the effects of innovations to productivity on macroeconomic activity.

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We construct and calibrate a general equilibrium business cycle model with unemployment and precautionary saving. We compute the cost of business cycles and locate the optimum in a set of simple cyclical fiscal policies. Our economy exhibits productivity shocks, giving firms an incentive to hire more when productivity is high. However, business cycles make workers' income riskier, both by increasing the unconditional probability of unusuallylong unemployment spells, and by making wages more variable, and therefore they decrease social welfare by around one-fourth or one-third of 1% of consumption. Optimal fiscal policy offsets the cycle, holding unemployment benefits constant but varying the tax rate procyclically to smooth hiring. By running a deficit of 4% to 5% of output in recessions, the government eliminates half the variation in the unemployment rate, most of the variation in workers'aggregate consumption, and most of the welfare cost of business cycles.

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This paper examines whether the introduction of government consumptionexpenditure in a standard one good model of the international real businesscycle is sufficient to reconcile the theory with the existing pattern ofinternational consumption and output correlations. I calibrate the model totwo different pairs of countries and generate the simulated distribution ofconsumption and output correlations implied by several specifications of themodel. It is shown that the model can account for existing internationalconsumption correlations only under very specific assumptions about the sizeof effect of government expenditure on agents' utility or the variabilityof government expenditure shocks. Crucial parameters are identified and thesensitivity of the results discussed.

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El presente trabajo desarrolla un modelo macroeconómico de equilibrio general dinámico y estocástico (DSGE), con el fin de analizar los efectos macroeconómicos que se derivan de simular un choque positivo al componente estocástico de la productividad del sector minero-energético. Este hecho genera un aumento generalizado de los salarios en el sector formal y en el recaudo tributario, incrementando el consumo total de los miembros del hogar. Esto genera un incremento del precio de los bienes no transables relativo al precio de los bienes transables, disminuyendo la tasa de cambio real (apreciación) y provocando un desplazamiento de los recursos productivos, desde el sector transable (manufacturero) al no-transable, seguido de un aumento en el PIB y empleo formal de la economía. Esto hace que el sector formal agregado absorba trabajadores desde el sector informal a través del subsector formal no-transable, lo que disminuye el PIB informal. En consecuencia, el consumo neto de los miembros informales disminuye, lo que incentiva a que algunos miembros del hogar no se empleen en el sector informal y prefieran quedarse desempleados. Por lo tanto, el resultado final sobre el mercado laboral es una disminución de los trabajadores informales, de los cuales una parte se encuentra en el sector formal, y la parte restante está en condición de desempleo.

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O objetivo deste trabalho é testar modelos clássicos de real business cycles para a economia brasileira. Em um primeiro estágio busca-se fatos estilizados, o que foi feito através da escolha de séries adequadas e da separação dos componetes cíclicos e da análise dos ciclos resultantes. Os parâmetros dos diversos modelos foram estimados utilizando o Método Generalizado dos Momentos (MGM). Estes parâmetros foram utilizados para construir diversas economias artificiais que, após simulação, foram confrontadas com os dados da economia brasileira. Entre todos testados, o modelo que melhor se adequou aos dados foi de cash in advance com taxação distorciva. Entretanto, alguns fatos estilizados importantes, como por exemplo o excesso de volatilidade do consumo, não foram adequadamente reproduzidos pelos modelos testados.

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We study relative price behavior in an international business cyclemodel with specialization in production, in which a goods marketfriction is introduced through transport costs. The transporttechnology allows for flexible transport costs. We analyze whetherthis extension can account for the striking differences betweentheory and data as far as the moments of terms of trade and realexchange rates are concerned. We find that transport costs increaseboth the volatility of the terms of trade and the volatility of thereal exchange rate. However, unless the transport technology isspecified by a Leontief technology, transport costs do not resolvethe quantitative discrepancies between theory and data. Asurprising result is that transport costs may actually lower thepersistence of the real exchange rate, a finding that is in contrastto much of the emphasis of the empirical literature.

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This paper analyses the empirical interdependences among assetreturns, real activity and inflation from a multicountry and internationalpoint of view. We find that nominal stock returns are significantly relatedto inflation only in the US, that the US term structure of interest ratespredicts both domestic and foreign inflation rates while foreign termstructures do not have this predictive power and that innovations in inflationand exchange rates induce insignificant responses of real and financialvariables. An interpretation of the dynamics and some policy implicationsof the results are provided.