The extensive literature on the contact hypothesis reports a positive association between intergroup and outgroup attitudes, yet it remains unknown whether this reflects within-person (i.e., situational changes within individuals) or between-person stable differences effects. To investigate question, we applied (random-intercept) cross-lagged panel models in two studies featuring different samp...

Professor Chin-Thack Soh (M.D., D.M.Sc.) passed away on 31 October 2016. He was born on 30 January in 1921 in Iksan, Jeollabuk-do (Province), Korea and grew up there. He graduated from Severance Union Medical College (former Yonsei University College of Medicine) in 1941. He studied at Tokyo Imperial University in Japan on infectious diseases, including tuberculosis and typhoid fever until 1944...

C hapter 1 of Kelley’s famous book General Topology introduces the most fundamental concepts of a topological space. One such notion is defined as follows [1]: A topological space (X, τ) is connected if and ony if X is not the union of two nonvoid separated subsets, where A and B are separated in X if and only if A∩ B = œ and A∩ B = œ. As usual, Y denotes the closure of a subset Y of X. Kelley’...

The isolation of insulin by Banting and Best in 1921 and its rapid commercial exploitation revolutionized the treatment of diabetes. The story, frequently told as a romance of medicine, is that a young orthopaedic surgeon, Frederick Banting, went to the local Professor of Physiology, J J R Macleod, asking for facilities to try to isolate the internal secretion of the pancreas. Macleod was scept...

David Gale played a leading role in developing theory of fundamental importance to economic and operations research. He authored papers in game theory and mathematical programming that have had a lasting impact. In addition, he was renowned for his ability to present his results in short papers combining precision and rigor with elegant style. This memorial collects tributes and memories from f...

This chapter uses a simulation model to generate predictions about the effects of gerrymandering institutions on four different measures of voter welfare, with interactions for partisan tides and party polarization. Four representation norms are defined: policy median, compositional, personal, and discursive. The simulation generates three major predictions with respect to these norms: (a) bipa...

We investigate the feasibility of loosely-coupled distributed datacentre architectures colocated with and powered by renewable energy sources and interconnected using high-bandwidth low-latency data links. The design of these architectures advocates (i) variable machine availability: the number of machines accessible at a particular site at any given time is proportional to the amount of renewa...

Longitudinal models are becoming increasingly prevalent in the behavioral sciences, with key advantages including increased power, more comprehensive measurement, and establishment of temporal precedence. One particularly salient strength offered by longitudinal data is the ability to disaggregate between-person and within-person effects in the regression of an outcome on a time-varying covaria...