1,192 research outputs found
Tests with commercial classical gravimeters in preparation for tests of quantum prototype
Preliminary tests with commercial spring-mass gravimeters have been carried out on the outdoor test field at Ispra in order to establish a test-bed suitable for testing a cold-atom quantum gravimeter. In 2016, the background on a single device was measured. In 2017, a measurements of the field above a buried 5 ton lead mass were carried out, using two gravimeters mounted vertically one above the other. A clear indication of the gravitational field of the test mass with seen, with good signal-to-noise ratio. It was concluded that the general layout is satisfactory, given that the quantum prototype should have sensitivity similar to or better than the conventional instruments. Practical experience gained is helpful for understanding the requirements for mounting and positioning the quantum instrument.JRC.E.2-Technology Innovation in Securit
Can film offer an(other) authoritative source of development knowledge?
David Lewis, Dennis Rodgers, and Michael Woolcock discuss the depiction of development in film and outline some of the potential pitfalls associated with film as a representational medium for development concerns
The sounds of development: musical representations as (an)other source of development knowledge
The experience of development, as well as understandings of and responses to it, are uniquely rendered via popular culture generally, and popular music in particular. It has been a medium of choice through which marginalized populations all over the world convey their (frequently critical) views, while in the Global North music has also long played a prominent (if notorious) role in portraying the plight of the South’s ‘starving millions’ as an emotional pretext for soliciting funds for international aid. We discuss the overlap between music and development in five specific domains: the tradition of Western ‘protest’ music; musical resistance in the Global South; music-based development interventions; commodification and appropriation; and, finally, music as a globalised development vernacular. We present our analyses not as definitive or comprehensive but as invitations to broaden the range of potential contributions to development debates, and the communicative modalities in and through which these debates are conducted. Doing so may lead to key stakeholders of development such as the poor finding said debates, and possible responses to them, decidedly more open, authentic and compelling
Is development an art or a science?
Reflecting on nearly twenty years of transdisciplinary practice and research and the recent publication of their new book, New Mediums, Better Messages? How Innovations in Translation, Engagement, and Advocacy are Changing International Development, David Lewis, Dennis Rodgers and Michael Woolcock consider how the role of popular and vernacular knowledge is essential to international development
Bridging the gap: methods to improving financial feasibility in historic rehabilitation projects
Initially, the scope of this work centered on the completion of a project in a small city in North Carolina. Working with Preservation North Carolina, a leading statewide non-profit, the goal was the successful conversion of a 1920 apartment building in the downtown into 18 residential units. Making use of their 501(c)3 status, Preservation North Carolina had been able to acquire the building from the city at a reduced rate several years earlier. Unfortunately, due to past market conditions and other perceived barriers, no significant progress was made despite several proposals. Vacant for some years, the city desired a change on the property and included it in the Downtown Master Plan as ideally suited for rehabilitation. Accordingly, Preservation North Carolina and the city began talks of how to get the project off the ground. In a meeting with city officials, an experienced developer, and representatives of Preservation North Carolina, the initial proposal was to pursue the most common and obvious track: conversion into residential using the federal and state historic preservation tax credits. The requirements of these programs, which will be discussed later, mandate that the property remain an income-producing property for five years. In terms of residential properties, this translates to a minimum mandatory period of rental residential. Page 5 Unfortunately for the initial plans, this proposal was not amenable to the city officials. The city manager expressed a strong desire for owner-occupied housing in the downtown area, which did not fit the income-producing requirement of tax credits. The need for a replacement gap-reducing mechanism became the topic of discussion. On the city's suggestion, the group researched and considered changing the scope of the project to qualify for a grant through Housing and Urban Development's Neighborhood Stabilization Program. The first round of the Neighborhood Stabilization Program consisted of 19.6 million to obligate to projects based on a determination of need. North Carolina obligated 20 grants to eleven local governments, six non-profits, and three statewide organizations for a total of 2.1 million out of the 1.3 million went toward the rehabilitation of a building in a similar area to the project under consideration (North Carolina Department of Commerce, 2009).Master of City and Regional Plannin
Metabolic control for inflammatory cascades in monocytes in response to chronic disease stimuli
Abstract not currently available
Approximating grouped fixed effects estimation via fuzzy clustering regression
We propose a new, computationally efficient way to approximate the “grouped fixed effects” (GFE) estimator of Bonhomme and Manresa (2015), which estimates grouped patterns of unobserved heterogeneity. To do so, we generalize the fuzzy C‐means objective to regression settings. As the clustering exponent
approaches 1, the fuzzy clustering objective converges to the GFE objective, which we recast as a standard generalized method of moments problem. We replicate the empirical results of Bonhomme and Manresa (2015) and show that our estimator delivers almost identical estimates. In simulations, we show that our approach offers improvements in terms of bias, classification accuracy, and computational speed
Fibrinogen E fragment selectively disrupts the vasculature and inhibits the growth of tumours in a syngeneic murine model
We recently demonstrated that a fragment of human fibrinogen, fibrinogen E fragment, inhibits the migration and differentiation of human endothelial cells in vitro. Here we show that it exerts similar effects on murine endothelial cells in vitro, and selectively disrupts tumour endothelium in vivo, causing widespread intravascular thrombosis and retarding the growth of CT26 tumours in a syngeneic murine model
First Acetic Acid Survey with CARMA in Hot Molecular Cores
Acetic acid (CHCOOH) has been detected mainly in hot molecular cores
where the distribution between oxygen (O) and nitrogen (N) containing molecular
species is co-spatial within the telescope beam. Previous work has presumed
that similar cores with co-spatial O and N species may be an indicator for
detecting acetic acid. However, does this presumption hold as higher spatial
resolution observations become available of large O and N-containing molecules?
As the number of detected acetic acid sources is still low, more observations
are needed to support this postulate. In this paper, we report the first acetic
acid survey conducted with the Combined Array for Research in Millimeter-wave
Astronomy (CARMA) at 3 mm wavelengths towards G19.61-0.23, G29.96-0.02 and IRAS
16293-2422. We have successfully detected CHCOOH via two transitions toward
G19.61-0.23 and tentatively confirmed the detection toward IRAS 16293-2422 A.
The determined column density of CHCOOH is 2.0(1.0)
cm and the abundance ratio of CHCOOH to methyl formate (HCOOCH)
is 2.2(0.1) toward G19.61-0.23. Toward IRAS 16293 A, the
determined column density of CHCOOH is 1.6
cm and the abundance ratio of CHCOOH to methyl formate (HCOOCH)
is 1.0 both of which are consistent with abundance
ratios determined toward other hot cores. Finally, we model all known line
emission in our passband to determine physical conditions in the regions and
introduce a new metric to better reveal weak spectral features that are blended
with stronger lines or that may be near the 1-2 detection limit.Comment: 28 pages, 8 figures, accepted for publication in the ApJ; Revised
citation in session 2, references remove
- …