Origin-destination demand, trip patterns, pricing and transport networks alone cannot explain passenger demand for public transport modes. Other factors of convenience and service quality play a key role in influencing demand and mode choice but they are often more complex and harder to define,...

Many organizations in the developing world (e.g., NGOs), include digital data collection in their workflow. Data collected can include information that may be considered sensitive, such as medical or socioeconomic data, and which could be affected by computer security attacks or unintentional...

This study offers a historical review of the monetary policy reform of October 6, 1979, and discusses the influences behind it and its significance. We lay out the record from the start of 1979 through the spring of 1980, relying almost exclusively upon contemporaneous sources, including the...

Geldpolitik und Deregulierung der Finanzmärkte in den USA Diese Studie untersucht, ob die kontinuierliche Innovation und Deregulierung der Finanzmärkte in den Vereinigten Staaten von Amerika Ende der siebziger und zu Beginn der achtziger Jahre eine potentielle Quelle beachtlicher...

This paper investigates whether investors are compensated for taking on commonality risk in equity portfolios. A large literature documents the existence and the causes of commonality in illiquidity, but the implications for investors are less well understood. In a more than fifty year long...

We develop the principal component analysis (PCA) approach to systematic liquidity measurement by introducing moving and expanding estimation windows. We evaluatethese methods along with traditional estimation techniques (full sample PCA and market average) in terms of ability to explain (1)...

This paper investigates whether investors are compensated for taking on commonality risk in equity portfolios. A large literature documents the existence and the causes of commonality in illiquidity, but the implications for investors are less understood. We find a return premium for commonality...

This note introduces the concept of the replication paradigm, a framework that can (and should) be followed in every replication attempt. The paradigm expands, in part, on Bruce McCullough's well-known paraphrase of Berkeley computer scientist Jon Claerbout's insight - "An applied economics...