New ways of analysing the history of varieties of English - an acoustic analysis of early pop music recordings from Ghana

I will present first results of an acoustic analysis of Ghanaian “Highlife” songs from the 1950s to 1960s. My results show that vowel subsystems in the 1950s and 1960s show a different kind of variation than in present-day Ghanaian English. Particularly the STRUT lexical set is realized as /a, ɔ/ in the Highlife-corpus. Today, it is realized with three different vowels in Ghanaian English, /a, ε, ɔ/ (Huber 2004: 849). A particular emphasis will also be on the way Praat (Boersma and Weenink 2011) can be used to analyze music recordings

Introduction: Towards an Ethics of Mind

This chapter locates our overall approach within the dialectic of contemporary philosophical debates and provides an overall framework for discussion. First, I introduce the problem of mental normativity. I show how this problem poses a prima facie threat to the common assumption in epistemology and metaethics that beliefs and other attitudes are governed by robust normative requirements. Secondly, I motivate philosophical inquiry about an ethics of mind by tracing this field back to recent debates in the ethics of belief. I characterize the ethics of mind as being concerned with two main questions: 1. How can we be responsible for our attitudes? 2. What attitudes should we have? Finally, I give an overview over the structure of the book and summarize the chapters

Optimal monetary and fiscal policy with a zero bound on nominal interest rates

I characterize optimal monetary and fiscal policy in a stochastic New Keynesian model when nominal interest rates may occasionally hit the zero lower bound. The benevolent policymaker controls the short-term nominal interest rate and the level of government spending. Under discretionary policy, accounting for fiscal stabilization policy eliminates to a large extent the welfare losses associated with the presence of the zero bound. Under commitment, the gains associated with the use of the fiscal policy tool remain modest, even though fiscal stabilization policy is part of the optimal policy mix

Responsibility for Attitudes, Object-Given Reasons, and Blame

I argue that the problem of responsibility for attitudes is best understood as a puzzle about how we are responsible for responding to our object-given reasons for attitudes – i.e., how we are responsible for being (ir)rational. The problem can be solved, I propose, by understanding the normative force of reasons for attitudes in terms of blameworthiness. I present a puzzle about the existence of epistemic and mental blame which poses a challenge for the very idea of reasons for attitudes. We are left with three options: denying that there are any reasons for attitudes, opting for pragmatism about reasons for attitudes, or arguing that the challenge rests on a misunderstanding of the normative force of reasons for attitudes. I finally suggest a version of the last strategy. We can understand the normative force of reasons for attitudes, and thereby solve the problem of mental responsibility, by acknowledging that the way we blame each other for failing to respond correctly to our reasons for attitudes is different from the way we blame each other when one failed to respond correctly to reasons for action

Dealing with a liquidity trap when government debt matters: optimal time-consistent monetary and fiscal policy

How does the need to preserve government debt sustainability affect the optimal monetary and fiscal policy response to a liquidity trap? To provide an answer, we employ a small stochastic New Keynesian model with a zero bound on nominal interest rates and characterize optimal time-consistent stabilization policies. We focus on two policy tools, the short-term nominal interest rate and debt-financed government spending. The optimal policy response to a liquidity trap critically depends on the prevailing debt burden. While the optimal amount of government spending is decreasing in the level of outstanding government debt, future monetary policy is becoming more accommodative, triggering a change in private sector expectations that helps to dampen the fall in output and inflation at the outset of the liquidity trap

The new keynesian approach to dynamic general equilibrium modeling: models, methods, and macroeconomic policy evaluation

This chapter aims to provide a hands-on approach to New Keynesian models and their uses for macroeconomic policy analysis. It starts by reviewing the origins of the New Keynesian approach, the key model ingredients and representative models. Building blocks of current-generation dynamic stochastic general equilibrium (DSGE) models are discussed in detail. These models address the famous Lucas critique by deriving behavioral equations systematically from the optimizing and forward-looking decision-making of households and firms subject to well-defined constraints. State-of-the-art methods for solving and estimating such models are reviewed and presented in examples. The chapter goes beyond the mere presentation of the most popular benchmark model by providing a framework for model comparison along with a database that includes a wide variety of macroeconomic models. Thus, it offers a convenient approach for comparing new models to available benchmarks and for investigating whether particular policy recommendations are robust to model uncertainty. Such robustness analysis is illustrated by evaluating the performance of simple monetary policy rules across a range of recently-estimated models including some with financial market imperfections and by reviewing recent comparative findings regarding the magnitude of government spending multipliers. The chapter concludes with a discussion of important objectives for on-going and future research using the New Keynesian framework

Dyson-Schwinger Equations and the Quark-Gluon Plasma

We review applications of Dyson-Schwinger equations at nonzero temperature, T, and chemical potential, mu, touching topics such as: deconfinement and chiral symmetry restoration; the behaviour of bulk thermodynamic quantities; the (T,mu)-dependence of hadron properties; and the possibility of diquark condensation.Comment: 13 pages, 1 figure, LaTeX, sprocl.sty, epsfig.sty. Summary of presentations by the authors at the Workshop "Understanding Deconfinement in QCD", ECT*, Trento, 1-13/March, 199

Dispersive regime of the Jaynes-Cummings and Rabi lattice

Photon-based strongly-correlated lattice models like the Jaynes-Cummings and Rabi lattices differ from their more conventional relatives like the Bose-Hubbard model by the presence of an additional tunable parameter: the frequency detuning between the pseudo-spin degree of freedom and the harmonic mode frequency on each site. Whenever this detuning is large compared to relevant coupling strengths, the system is said to be in the dispersive regime. The physics of this regime is well-understood at the level of a single Jaynes-Cummings or Rabi site. Here, we extend the theoretical description of the dispersive regime to lattices with many sites, for both strong and ultra-strong coupling. We discuss the nature and spatial range of the resulting qubit-qubit and photon-photon coupling, demonstrate the emergence of photon- pairing and squeezing, and illustrate our results by exact diagonalization of the Rabi dimer.Comment: 22 pages, 7 figures, 1 table, Published by NJP, Focus Issues "Focus on Quantum Microwave Field Effects in Superconducting Circuits