The Collapse of the Soviet Union and the Productivity of American Mathematicians

It has been difficult to open up the black box of knowledge production. We use unique international data on the publications, citations, and affiliations of mathematicians to examine the impact of a large post-1992 influx of Soviet mathematicians on the productivity of their American counterparts. We find a negative productivity effect on those mathematicians whose research overlapped with that of the Soviets. We also document an increased mobility rate (to lower-quality institutions and out of active publishing) and a reduced likelihood of producing “home run” papers. Although the total product of the pre-existing American mathematicians shrank, the Soviet contribution to American mathematics filled in the gap. However, there is no evidence that the Soviets greatly increased the size of the “mathematics pie.” Finally, we find that there are significant international differences in the productivity effects of the collapse of the Soviet Union, and that these international differences can be explained by both differences in the size of the émigré flow into the various countries and in how connected each country is to the global market for mathematical publications.

Lexicalization and Grammar Development

In this paper we present a fully lexicalized grammar formalism as a particularly attractive framework for the specification of natural language grammars. We discuss in detail Feature-based, Lexicalized Tree Adjoining Grammars (FB-LTAGs), a representative of the class of lexicalized grammars. We illustrate the advantages of lexicalized grammars in various contexts of natural language processing, ranging from wide-coverage grammar development to parsing and machine translation. We also present a method for compact and efficient representation of lexicalized trees.Comment: ps file. English w/ German abstract. 10 page

Waiting Room words

Around the world we are coming to realise what Indigenous and First Nations peoples have long known: the creative arts are crucially important for our health and wellbeing. Today we have extensive evidence for how, in hospitals, the arts can help patients cope with serious illness, use less pain medication, stay fewer days in hospital, and rehabilitate much faster; how creative activity is often key to healing from trauma and mental illness; how the arts offer us pathways to death and through grief; how they bring communities together, preventing illness and keeping those with dementia and chronic ill health active, involved and flourishing for as long as possible. The Institute for Creative Health (ICH) is a national peak advocacy organisation that works to give all Australians more access to the creative arts, to support their health. In 2013 the ICH assisted both the Federal and State Health and Arts Ministers to endorse The National Arts and Health Framework, which stated that the Arts contribute to the health and wellbeing of Australian individuals and communities. This provides an ongoing policy commitment to including the Arts as a core component in supporting and improving the health of all Australians. BACKGROUND The Waiting Room Words Project is the Arts and Health Leadership Group NSW/ACT’s 2018 commitment to HAALP. It is our offering to the network of NSW Health and the Arts key contacts established by the NSW Health and the Arts Framework, to the Local Government Cultural Officers whose projects keep communities cohesive, to the doctors, nurses and allied health practitioners who include arts in wards and offices and clinics, to the patients and families and friends and carers and community who we serve. To further this momentum, the ICH designed the Health Arts Action Leadership Project (HAALP) 2017, which established Leadership Groups in Arts and Health in each state, who could undertake advocacy and lead efforts to consolidate principles and best practices in the sector. The University of Technology Sydney: Shopfront Community Program Graphic Design Students including Claudia Carroll, Daniel Giannone, Jessica Burdfield, Sylvia Zheng and Xinyue Wang Local Government Local Health Districts (LHD's) health and arts contact personnel, NSW Health Australia Council, Catalyst Grant The Institute for Creative Health Sydney Health Ethics, Sydney School of Public Health, University of Sydney The Making Space Conference, Belfast, Northern Ireland 2002 ‘Yes they said we would happy to be involved’ And we are a little amazed, and touched, - if not a little grateful and inspired! We wish to acknowledge everyone who has been involved in this project. We have contributors from rural, remote, regional and inner city areas of NSW - from an inner city Men’s Shed, Aboriginal and Torres Strait Islander art groups, an older women’s drumming group, community individuals, a year 5 class from a Sydney Public School and the staff, university students and lecturers, readers groups, artists, arts facilitators and the people from all walks of life who put their hand up to be involved

A Shred of Credible Evidence on the Long Run Elasticity of Labor Supply

The available estimates of the wage elasticity of male labor supply in the literature have varied between -0.2 and 0.2, implying that permanent wage increases have relatively small, poorly determined effects on labor supplied. The variation in existing estimates calls for a simple, natural experiment in which men can change their hours of work, and in which wages have been exogenously and permanently changed. We introduce a panel data set of taxi drivers who choose their own hours, and who experienced two exogenous permanent fare increases instituted by the New York City Taxi and Limousine Commission. Our preferred estimate suggests that their elasticity of labor supply is about -0.2.male labor supply, effect of wage rates, long run labor supply, public policies, taxation, social safety nets, and redistribution of income, New York City Taxi and Limousine Commission

CMBEASY:: an Object Oriented Code for the Cosmic Microwave Background

We have ported the cmbfast package to the C++ programming language to produce cmbeasy, an object oriented code for the cosmic microwave background. The code is available at www.cmbeasy.org. We sketch the design of the new code, emphasizing the benefits of object orientation in cosmology, which allow for simple substitution of different cosmological models and gauges. Both gauge invariant perturbations and quintessence support has been added to the code. For ease of use, as well as for instruction, a graphical user interface is available.Comment: 7 pages, 5 figures, matches published version, code at http://www.cmbeasy.or

US Metropolitan Area Resilience: Insights from dynamic spatial panel estimation

In this paper, we show that the economic crisis commencing in 2007 had different impacts across US Metropolitan Statistical Areas, and seek to understand why differences occurred. The hypothesis of interest is that differences in industrial structure are a cause of variations in response to the crisis. Our approach uses a state-of-the art dynamic spatial panel model to obtain counterfactual predictions of Metropolitan Statistical Area employment levels from 2008 to 2014. The counterfactual employment series are compared with actual employment paths in order to obtain Metropolitan Statistical Area-specific measures of crisis impact, which then are analysed with a view to testing the hypothesis that resilience to the crisis was dependent on Metropolitan Statistical Area industrial structure. </jats:p

Traction drive system design considerations for a lunar roving vehicle

Optimum design considerations of traction drive for lunar roving vehicl

4D, N = 1 Supersymmetry Genomics (I)

Presented in this paper the nature of the supersymmetrical representation theory behind 4D, N = 1 theories, as described by component fields, is investigated using the tools of Adinkras and Garden Algebras. A survey of familiar matter multiplets using these techniques reveals they are described by two fundamental valise Adinkras that are given the names of the cis-Valise (c-V) and the trans-Valise (t-V). A conjecture is made that all off-shell 4D, N = 1 component descriptions of supermultiplets are associated with two integers - the numbers of c-V and t-V Adinkras that occur in the representation.Comment: 53 pages, 19 figures, Report-II of SSTPRS 2008 Added another chapter for clarificatio