8,420 research outputs found
Certification Systems as Tools for Natural Asset Building: Potential, Experiences to Date, and Critical Challenges
Certification systems are becoming important tools to encourage and reward social and environmental responsibility. This paper explores whether these systems, which generally have not been designed for the explicit aim of poverty reduction, can assist poor people, either individually or in community-based and small-to-medium production units, to build their natural assets as a basis for sustainable livelihoods. The paper examines two leading certification systems -- the Forest Stewardship Council(TM); and the Fair Trade Certified(TM); system -- and emerging systems in tourism and mining. The results to date have been mixed. In the forestry sector, poverty reduction benefits of certification have been modest relative to its environmental benefits. In the agricultural commodity trade, where certification systems have been designed with a stronger focus on reducing poverty, the benefits have been greater. The long-term challenge is to ensure that the rapid global uptake and 'mainstreaming' of certification systems does not create new hurdles for low-income individuals and communities
Can Advocacy-Led Certification Systems Transform Global Corporate Practices? Evidence, and Some Theory
There is emerging evidence that globalization is beginning to provide new opportunities for global coalitions of advocacy groups to bring market-based pressures to bear upon major transnational firms in a way that promotes higher standards of social and environmental responsibility in production processes and trade relations. This can be seen as successful citizen-led attention to the “production and process methods” which the Uruguay Round of trade negotiations explicitly chose to omit. More broadly it may reflect the increased importance of global branding, improved awareness in both consumer and financial markets of the social and environmental practices of firms, and collaboration on the part of producers to reduce their risk of brand-damaging attacks on the social and environmental responsibility of their practices. The emergence and growth of the Forest Stewardship Council as the “gold standard” for sustainable forest management, and the expensive attempts by the forest products industry to create industry-driven substitute standards, may be the pivotal example of this phenomenon. The further growth of certified Fair Trade practices under Transfair USA is another example. Both cases provide important lessons as to the elements of present and future success for this movement. They may also represent creative new solutions for problems of persistent poverty by using the leverage of markets in the global North to improve the ability of workers, farmers, and other producers in the global South to build natural assets in ways that generate socially and environmentally sustainable livelihoods.
Certification Systems as Tools for Natural Asset Building: Potential, Experiences to Date, and Critical Challenges
Certification systems are becoming important tools to encourage and reward social and environmental responsibility. This paper explores whether these systems, which generally have not been designed for the explicit aim of poverty reduction, can assist poor people, either individually or in community-based and small-to-medium production units, to build their natural assets as a basis for sustainable livelihoods. The paper examines two leading certification systems – the Forest Stewardship Council™ and the Fair Trade Certified™ system – and emerging systems in tourism and mining. The results to date have been mixed. In the forestry sector, poverty reduction benefits of certification have been modest relative to its environmental benefits. In the agricultural commodity trade, where certification systems have been designed with a stronger focus on reducing poverty, the benefits have been greater. The long-term challenge is to ensure that the rapid global uptake and ‘mainstreaming’ of certification systems does not create new hurdles for low-income individuals and communities.certification, social responsibility, environmental responsibility, povery reduction, natural assets, sustainable livelihoods, Forest Stewardship Council™, Fair Trade Certified™, tourism, mining, forestry, agriculture, globalization
Physics Of Eclipsing Binaries. II. Towards the Increased Model Fidelity
The precision of photometric and spectroscopic observations has been
systematically improved in the last decade, mostly thanks to space-borne
photometric missions and ground-based spectrographs dedicated to finding
exoplanets. The field of eclipsing binary stars strongly benefited from this
development. Eclipsing binaries serve as critical tools for determining
fundamental stellar properties (masses, radii, temperatures and luminosities),
yet the models are not capable of reproducing observed data well either because
of the missing physics or because of insufficient precision. This led to a
predicament where radiative and dynamical effects, insofar buried in noise,
started showing up routinely in the data, but were not accounted for in the
models. PHOEBE (PHysics Of Eclipsing BinariEs; http://phoebe-project.org) is an
open source modeling code for computing theoretical light and radial velocity
curves that addresses both problems by incorporating missing physics and by
increasing the computational fidelity. In particular, we discuss triangulation
as a superior surface discretization algorithm, meshing of rotating single
stars, light time travel effect, advanced phase computation, volume
conservation in eccentric orbits, and improved computation of local intensity
across the stellar surfaces that includes photon-weighted mode, enhanced limb
darkening treatment, better reflection treatment and Doppler boosting. Here we
present the concepts on which PHOEBE is built on and proofs of concept that
demonstrate the increased model fidelity.Comment: 60 pages, 15 figures, published in ApJS; accompanied by the release
of PHOEBE 2.0 on http://phoebe-project.or
Achievement goals, self-handicapping, and performance: A 2 × 2 achievement goal perspective
Elliot and colleagues (2006) examined the effects of experimentally induced achievement goals, proposed by the
trichotomous model, on self-handicapping and performance in physical education. Our study replicated and extended the
work of Elliot et al. by experimentally promoting all four goals proposed by the 262 model (Elliot & McGregor, 2001),
measuring the participants’ own situational achievement goals, using a relatively novel task, and testing the participants in a group setting. We used a randomized experimental design with four conditions that aimed to induce one of the four goals advanced by the 262 model. The participants (n¼138) were undergraduates who engaged in a dart-throwing task. The results pertaining to self-handicapping partly replicated Elliot and colleagues’ findings by showing that experimentally promoted performance-avoidance goals resulted in less practice. In contrast, the promotion of mastery-avoidance goals did
not result in less practice compared with either of the approach goals. Dart-throwing performance did not differ among the four goal conditions. Personal achievement goals did not moderate the effects of experimentally induced goals on selfhandicapping and performance. The extent to which mastery-avoidance goals are maladaptive is discussed, as well as the interplay between personal and experimentally induced goals
Halpha and 4000 Angstrom Break Measurements for ~3500 K-selected Galaxies at 0.5<z<2.0
We measure spectral features of ~3500 K-selected galaxies at 0.5<z<2.0 from
high quality medium-band photometry using a new technique. First, we divide the
galaxy sample in 32 subsamples based on the similarities between the full
spectral energy distributions (SEDs) of the galaxies. For each of these 32
galaxy types we construct a composite SED by de-redshifting and scaling the
observed photometry. This approach increases the signal-to-noise ratio and
sampling of galaxy SEDs and allows for model-independent stellar population
studies. The composite SEDs are of spectroscopic quality, and facilitate -- for
the first time -- Halpha measurement for a large magnitude-limited sample of
distant galaxies. The linewidths indicate a photometric redshift uncertainty of
dz<0.02x(1+z). The composite SEDs also show the Balmer and 4000 Angstrom
breaks, MgII absorption at ~2800 Angstrom, the dust absorption feature at 2175
Angstrom, and blended [OIII]+Hbeta emission. We compare the total equivalent
width of Halpha, [NII], and [SII] (W_Halpha+) with the strength of the 4000
Angstrom break (D(4000)) and the best-fit specific star formation rate, and
find that all these properties are strongly correlated. This is a reassuring
result, as currently most distant stellar population studies are based on just
continuum emission. Furthermore, the relation between W_Halpha+ and Dn(4000)
provides interesting clues to the SFHs of galaxies, as these features are
sensitive to different stellar ages. We find that the correlation between
W_Halpha+ and D(4000) at 0.5<z<2.0 is similar to z~0, and that the suppression
of star formation in galaxies at z<2 is generally not abrupt, but a gradual
process.Comment: Accepted for publication in ApJ; high-resolution version can be
downloaded at https://www.cfa.harvard.edu/~mkriek/papers
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