250 research outputs found
Addressing conflict through collective action in natural resource management
The food security crisis and international âland grabsâ have drawn renewed attention to the role of natural resource competition in the livelihoods of the rural poor. While significant empirical research has focused on diagnosing the links between natural resource competition and (violent) conflict, much less has focused on the dynamics of whether and how resource competition can be transformed to strengthen social-ecological resilience and mitigate conflict. Focusing on this latter theme, this review synthesizes evidence from cases in Africa, Asia, and Latin America. Building on an analytical framework designed to enable such comparative analysis, we present several propositions about the dynamics of conflict and collective action in natural resource management, and a series of recommendations for action. These propositions are: that collective action in natural resource management is influenced by the social-ecological and governance context, that natural resource management institutions affect the incentives for conflict or cooperation, and that the outcomes of these interactions influence future conflict risk, livelihoods, and resource sustainability. Action recommendations concern policies addressing resource tenure, conflict resolution mechanisms, and social inequalities, as well as strategies to strengthen collective action institutions in the natural resource sectors and to enable more equitable engagement by marginalized groups in dialogue and negotiation over resource access and use
Reconstructing the history of dark energy using maximum entropy
We present a Bayesian technique based on a maximum-entropy method to reconstruct the dark energy equation of state (EOS) w(z) in a non-parametric way. This Maximum Entropy (MaxEnt) technique allows to incorporate relevant prior information while adjusting the degree of smoothing of the reconstruction in response to the structure present in the data. After demonstrating the method on synthetic data, we apply it to current cosmological data, separately analysing Type Ia supernova measurement from the HST/GOODS programme and the first-year Supernovae Legacy Survey (SNLS), complemented by cosmic microwave background and baryonic acoustic oscillation data. We find that the SNLS data are compatible with w(z) = -1 at all redshifts 0 64 z 72 1100, with error bars of the order of 20 per cent for the most-constraining choice of priors. The HST/GOODS data exhibit a slight (about 1\u3c3 significance) preference for w > -1 at z 3c 0.5 and a drift towards w > -1 at larger redshifts which, however, is not robust with respect to changes in our prior specifications. We employ both a constant EOS prior model and a slowly varying w(z) and find that our conclusions are only mildly dependent on this choice at high redshifts. Our method highlights the danger of employing parametric fits for the unknown EOS, that can potentially miss or underestimate real structure in the data. \ua9 2007 RAS
How predictive is the MMSE for cognitive performance after stroke?
Cognitive deficits are commonly observed in stroke patients. Neuropsychological testing is time-consuming and not easy to administer after hospital discharge. Standardised screening measures are desirable. The Mini-Mental State Examination (MMSE) is the test most widely applied to screen for cognitive deficits. Despite its broad use, its predictive characteristics after stroke have not been exhaustively investigated. The aim of this study was to determine whether the MMSE is able to adequately screen for cognitive impairment and dementia after stroke and whether or not the MMSE can predict further deterioration or recovery in cognitive function over time. To this end, we studied 194 first-ever stroke patients without pre-stroke cognitive deterioration who underwent MMSEs and neuropsychological test batteries at 1, 6, 12, and 24Â months after stroke. The MMSE score 1Â month after stroke predicted cognitive functioning at later follow-up visits. It could not predict deterioration or improvement in cognitive functioning over time. The cut-off score in the screening for 1 cognitive disturbed domain was 27/28 with a sensitivity of 0.72. The cut-off score in the screening for at least 4 impaired domains and dementia were 26/27 and 23/24 with a sensitivity of 0.82 and 0.96, respectively. The results indicated that the MMSE has modest qualities in screening for mild cognitive disturbances and is adequate in screening for moderate cognitive deficits or dementia in stroke patients 1Â month after stroke. Poor performance on the MMSE is predictive for cognitive impairment in the long term. However, it cannot be used to predict further cognitive deterioration or improvement over time
Expressions 1982
This fifth edition of EXPRESSIONS is the culmination of student efforts in the 1982 Creative Writing Contest, Campus Chronicle Photography Contest, Art and Commercial Art courses at Des Moines Area Community College.
Journalism students did the design, typography and lay-out work necessary to bring these efforts together in this 1982 edition of EXPRESSIONS.https://openspace.dmacc.edu/expressions/1004/thumbnail.jp
Recommended from our members
1961
My Ideal Course, Underwater, U.S.A. (page 1) From the Editor (3) Turf Management Club News (3) Quotes from 1961 Seniors (4) The United States Most Western Owned Golf Course: Armed Forces Golf Course, Guam (5) Turf Majors Participate in Horticultural Show (7) Picture - G.C.S.A Scholarships Awarded to Three Turf Seniors (8) Picture - Stockbridge - Majors in turf Management (9) Opportunity and Education (10) The Most Outstanding Turf Senior for the Year - 1961 (11) How We Prepare Our Greens Before Topdressing (12) An Inexpensive Cure for Weeds and Poa Annua (13) Watering (14) Picture - Honorary Members of the Turf Management Club (16) Picture - Graduates of Winter School for Turf Managers - 1961 (17) Welcome Speech by Narry Sperandio (A-1) Handle with Care by Dr. Ellsworth H. Wheeler (A-2) Current Ideas on Green Construction - Panel Discussion (A-4) Automatic Systems for Watering by Robert F. Harper (A-14) History of Golf Course Architecture by Geoffrey S. Cornish (A-22) Effect of Nutrition on Turf Diseases by Dr. Houston B. Couch Turf Disease Control and Use of Fungicides by Dr. R. J. Lukens Trees and Tree Care by Gordon S. King (A-38) Arsenical Toxicity by Dr. C. R. Skogley (A-41) Soil Reaction to Arsenical Compounds by Joseph E. Steckel Brush Control For the Golf Course by Dr. William I. Boyd (A-51) Massachusetts Highway Herbicide Program by Joseph L. Beasley (A-54) General Turf (Alternate Session): Observations on Highway Turf Establishment & Maintenance by E.F. Button (A-62) Pre-emerge Chemicals for the Control of Crabgrass by Dr. John R. Havis, John M. Zak & Joseph Troll (A-70) Root Growth of Turf Grasses as Affected by Different heights of Cut and Nutrient Levels by Evangel J. Bredakis (A-71) The Use of Sod by Daniel Pellegrino (A-72
Adjunctive therapies for Kawasaki disease
Kawasaki disease (KD) is the most common cause of acquired heart disease in children in developed countries.(1,2) The primary goal of treatment is to prevent coronary artery aneurysms (CAA). Between 10 and 20% of KD patients are resistant to treatment with intravenous immunoglobulin (IVIG) and have an almost nine-fold increased risk of developing CAA.(3) In addition, approximately 80-90% of patients who go on to develop CAA have abnormal coronary artery dimensions on their first echocardiogram and can therefore be identified as high-risk patients. These two subsets of KD patients are candidates for adjunctive therapy, in addition to IVIG. Understanding the mechanism of action of IVIG may provide insight into IVIG resistance and guidance for choosing adjunctive therapies in KD. Therapeutic options in the treatment of refractory KD and patients with early CAA include additional IVIG, glucocorticoids, tumor necrosis factor inhibitors, calcineurin inhibitors and interleukin-1 (IL-1) blockers.(3-10) Animal studies suggest that the anti-inflammatory properties of statins may also be beneficial in blocking CAA progression.(6) It is unlikely that these therapies will be studied in large, randomized controlled trials in the future due to required sample size and funding constraints. Thus, data from the research laboratory may be helpful in guiding selection of the most promising adjunctive therapies
Shadows and light: diversity management as phantasmagoria
 Within the field of critical diversity studies increasing reference is made to the need for more critically informed research into the practice and implementation of diversity management. This article draws on an action research project that involved diversity practitioners from within the UK voluntary sector. In their accounts of resistance, reluctance and a lack of effective organizational engagement, participants shared a perception of diversity management as something difficult to concretize and envisage; and as something that organizational members associated with fear and anxiety; and with an inability to act. We draw on the metaphor of the phantasmagoria as a means to investigate this representation. We conclude with some tentative suggestions for alternative ways of doing diversity.
Protocol for investigating genetic determinants of posttraumatic stress disorder in women from the Nurses' Health Study II
<p>Abstract</p> <p>Background</p> <p>One in nine American women will meet criteria for the diagnosis of posttraumatic stress disorder (PTSD) in their lifetime. Although twin studies suggest genetic influences account for substantial variance in PTSD risk, little progress has been made in identifying variants in specific genes that influence liability to this common, debilitating disorder.</p> <p>Methods and design</p> <p>We are using the unique resource of the Nurses Health Study II, a prospective epidemiologic cohort of 68,518 women, to conduct what promises to be the largest candidate gene association study of PTSD to date. The entire cohort will be screened for trauma exposure and PTSD; 3,000 women will be selected for PTSD diagnostic interviews based on the screening data. Our nested case-control study will genotype1000 women who developed PTSD following a history of trauma exposure; 1000 controls will be selected from women who experienced similar traumas but did not develop PTSD.</p> <p>The primary aim of this study is to detect genetic variants that predict the development of PTSD following trauma. We posit inherited vulnerability to PTSD is mediated by genetic variation in three specific neurobiological systems whose alterations are implicated in PTSD etiology: the hypothalamic-pituitary-adrenal axis, the locus coeruleus/noradrenergic system, and the limbic-frontal neuro-circuitry of fear. The secondary, exploratory aim of this study is to dissect genetic influences on PTSD in the broader genetic and environmental context for the candidate genes that show significant association with PTSD in detection analyses. This will involve: conducting conditional tests to identify the causal genetic variant among multiple correlated signals; testing whether the effect of PTSD genetic risk variants is moderated by age of first trauma, trauma type, and trauma severity; and exploring gene-gene interactions using a novel gene-based statistical approach.</p> <p>Discussion</p> <p>Identification of liability genes for PTSD would represent a major advance in understanding the pathophysiology of the disorder. Such understanding could advance the development of new pharmacological agents for PTSD treatment and prevention. Moreover, the addition of PTSD assessment data will make the NHSII cohort an unparalleled resource for future genetic studies of PTSD as well as provide the unique opportunity for the prospective examination of PTSD-disease associations.</p
Water vapor toward starless cores: the Herschel view
SWAS and Odin provided stringent upper limits on the gas phase water
abundance of dark clouds (x(H2O) < 7x10^-9). We investigate the chemistry of
water vapor in starless cores beyond the previous upper limits using the highly
improved angular resolution and sensitivity of Herschel and measure the
abundance of water vapor during evolutionary stages just preceding star
formation. High spectral resolution observations of the fundamental ortho water
(o-H2O) transition (557 GHz) were carried out with Herschel HIFI toward two
starless cores: B68, a Bok globule, and L1544, a prestellar core embedded in
the Taurus molecular cloud complex. The rms in the brightness temperature
measured for the B68 and L1544 spectra is 2.0 and 2.2 mK, respectively, in a
velocity bin of 0.59 km s^-1. The continuum level is 3.5+/-0.2 mK in B68 and
11.4+/-0.4 mK in L1544. No significant feature is detected in B68 and the 3
sigma upper limit is consistent with a column density of o-H2O N(o-H2O) <
2.5x10^13 cm^-2, or a fractional abundance x(o-H2O) < 1.3x10^-9, more than an
order of magnitude lower than the SWAS upper limit on this source. The L1544
spectrum shows an absorption feature at a 5 sigma level from which we obtain
the first value of the o-H2O column density ever measured in dark clouds:
N(o-H2O) = (8+/-4)x10^12 cm^-2. The corresponding fractional abundance is
x(o-H2O) ~ 5x10^-9 at radii > 7000 AU and ~2x10^-10 toward the center. The
radiative transfer analysis shows that this is consistent with a x(o-H2O)
profile peaking at ~10^-8, 0.1 pc away from the core center, where both
freeze-out and photodissociation are negligible. Herschel has provided the
first measurement of water vapor in dark regions. Prestellar cores such as
L1544 (with their high central densities, strong continuum, and large
envelopes) are very promising tools to finally shed light on the solid/vapor
balance of water in molecular clouds.Comment: Accepted for publication in Astronomy and Astrophysics (HIFI first
results issue
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