Book review: urban revolution now: Henri Lefebvre in social research and architecture

More than half of the world’s population now live in cities – but how has this transformation in how we live occurred? Urban Revolution Now: Henri Lefebvre in Social Research and Architecture uses the work of Lefebvre to critically understand the process of urbanisation and to offer practical answers to the problems facing urbanised society. Do Young Oh praises the book’s collection of case studies as being useful for showing how Lefebvrian ideas can be used for research and practice across the disciplines of the social sciences

Book review: urban neighborhoods in a new era: revitalization politics in the postindustrial city edited by Clarence N. Stone and Robert P. Stoker

In the edited collection Urban Neighborhoods in a New Era: Revitalization Politics in the Postindustrial City, Clarence N. Stone and Robert P. Stoker investigate how North American cities have developed neighbourhood-level policies aimed at challenging urban deprivation through case studies of cities including Baltimore, Chicago and Los Angeles. Although the book does not fully tackle the root causes of structural inequality, it does offer clear proposals that predict a positive future for deprived urban communities, writes Do Young Oh

The university and East Asian cities: the variegated origins of urban universities in colonial Seoul and Singapore

This essay explores and compares the development of colonial urban universities in Seoul and Singapore for the purpose of examining the multifaceted and scaled socio-political relationships in colonial cities. The colonial universities were a contested space where different interests crossed. The pattern of these intersections was different because Seoul and Singapore experienced different colonial powers – Japan and Britain, respectively. In this regard, this essay focuses on how different colonial experiences affected universities as well as urban environments in Seoul and Singapore. The findings show that the university campus development trends of colonial universities in Seoul and Singapore are important to understanding the urbanization processes of both cities. The varied colonial interests, global and local, shaped universities and their surrounding urban environments in different ways. Understanding these differences helps us understand the development trajectory of East Asian urbanization

Developmentalist cities? Interrogating urban developmentalism in East Asia

Developmentalist cities? Interrogating urban developmentalism in East Asia, editedby Jamie Doucette and Bae-Gyoon Park, Leiden, Brill, 2018, 364 pp., $198 (hardback), ISBN: 978900438360

Early science with Korean VLBI network: the QCAL-1 43GHz calibrator survey

This paper presents the catalog of correlated flux densities in three ranges of baseline projection lengths of 637 sources from a 43 GHz (Q-band) survey observed with the Korean VLBI Network. Of them, 623 sources have not been observed before at Q-band with VLBI. The goal of this work in the early science phase of the new VLBI array is twofold: to evaluate the performance of the new instrument that operates in a frequency range of 22-129 GHz and to build a list of objects that can be used as targets and as calibrators. We have observed the list of 799 target sources with declinations down to -40 degrees. Among them, 724 were observed before with VLBI at 22 GHz and had correlated flux densities greater than 200 mJy. The overall detection rate is 78%. The detection limit, defined as the minimum flux density for a source to be detected with 90% probability in a single observation, was in a range of 115-180 mJy depending on declination. However, some sources as weak as 70 mJy have been detected. Of 623 detected sources, 33 objects are detected for the first time in VLBI mode. We determined their coordinates with the median formal uncertainty 20 mas. The results of this work set the basis for future efforts to build the complete flux-limited sample of extragalactic sources at frequencies 22 GHz and higher at 3/4 of the celestial sphere.Comment: Accepted for publication by the Astronomical Journal; 6 pages. Machine-readable Table 3 and Table 4 can be accessed by downloading and uncompressing source code of the pape

A New Hardware Correlator in Korea: Performance Evaluation using KVN observations

We report results of the performance evaluation of a new hardware correlator in Korea, the Daejeon correlator, developed by the Korea Astronomy and Space Science Institute (KASI) and the National Astronomical Observatory of Japan (NAOJ). We conducted Very Long Baseline Interferometry (VLBI) observations at 22~GHz with the Korean VLBI Network (KVN) in Korea and the VLBI Exploration of Radio Astrometry (VERA) in Japan, and correlated the aquired data with the Daejeon correlator. For evaluating the performance of the new hardware correlator, we compared the correlation outputs from the Daejeon correlator for KVN observations with those from a software correlator, the Distributed FX (DiFX). We investigated the correlated flux densities and brightness distributions of extragalactic compact radio sources. The comparison of the two correlator outputs show that they are consistent with each other within $<8\%$, which is comparable with the amplitude calibration uncertainties of KVN observations at 22~GHz. We also found that the 8\% difference in flux density is caused mainly by (a) the difference in the way of fringe phase tracking between the DiFX software correlator and the Daejeon hardware correlator, and (b) an unusual pattern (a double-layer pattern) of the amplitude correlation output from the Daejeon correlator. The visibility amplitude loss by the double-layer pattern is as small as 3\%. We conclude that the new hardware correlator produces reasonable correlation outputs for continuum observations, which are consistent with the outputs from the DiFX software correlator.Comment: 13 pagee, 9 figures, 3 tables, to appear in JKAS (received February 9, 2015; accepted March 16, 2015