bluuebunny/crossref_metadata_2025_split huggingface dataset:
Diversity and Democratic Politics: An Introduction
Authors: Harell Allison , Stolle Dietlind 
Published: May 2010

Abstract.In recent years, there has been increasing popular and academic debate about how ethnic and racial diversity affects democratic politics and social cohesion in industrialized liberal democracies. In this introduction, different interdisciplinary theoretical approaches for understanding the role of diversity for intergroup relations and social cohesion are reviewed and four extensions to the current literature are proposed. These include taking advantage of a comparative framework to understand how generalizable the consequences of diversity are. A comparative country approach also helps to reveal which policies might be able to mitigate any potential negative consequences of diversity. Most importantly, we propose that the research in this area should include other aspects of social cohesion beyond measures of generalized trust, such as solidarity, attitudes about the welfare state and redistributive justice, as well as political and social tolerance. Finally, research on the effects of diversity might gain more insights from taking less of a majority-centric approach to include the effects on various minority groups as well.Résumé.Ces dernières années ont procuré un sol fertile au débat populaire et universitaire autour des effets de la diversité ethnique et raciale sur la politique démocratique et sur la cohésion sociale dans les démocraties libérales industrialisées. Dans cette introduction, nous passons en revue diverses approches théoriques interdisciplinaires permettant de clarifier le rôle de la diversité dans les relations entre les groupes et dans la cohésion sociale et nous proposons quatre ajouts à la littérature courante. Nous suggérons, entre autres, de tirer profit d'un cadre comparatif pour comprendre à quel point les conséquences de la diversité sont généralisables. Une étude comparative des pays aide également à cerner les politiques qui pourraient atténuer les conséquences négatives potentielles de la diversité. Par-dessus tout, nous avançons que la recherche dans ce domaine devrait inclure d'autres aspects de la cohésion sociale à part les mesures de la confiance généralisée, des aspects tels que la solidarité, les attitudes envers l'État-providence et la justice redistributive, ainsi que la tolérance politique et sociale. Finalement, la recherche sur les effets de la diversité pourrait devenir plus instructive en adoptant une approche moins centrée sur la majorité afin d'inclure également les effets sur divers groupes minoritaires.
Does Diversity Damage Social Capital? A Comparative Study of Neighbourhood Diversity and Social Capital in the US and Britain
Authors: Fieldhouse Edward , Cutts David 
Published: May 2010

Abstract.A number of scholars have noted a negative relationship between ethnic diversity and social capital or social trust, especially in the US. Evidence from other countries has been more mixed and sometimes contradictory. In this paper we provide the first Anglo-American comparative analysis of the relationship between neighbourhood diversity and social capital, and show how this relationship varies across ethnic categories. We apply multilevel structural equation models to individual level data from the 2000 Citizen Benchmark Survey for the US and the 2005 Citizenship Survey for Great Britain. The findings suggest that while for attitudinal social capital among Whites the negative underlying relationship with diversity is apparent in both countries, the effect is much weaker or reversed for minority groups. For structural social capital the negative relationship is apparent for minorities but not Whites, but this is mainly attributable to other neighbourhood characteristics.Résumé.Un certain nombre d'universitaires ont noté une relation négative entre la diversité ethnique et le capital social ou la confiance sociale, surtout aux États-Unis. D'autres pays, par contre, offrent des constats plus mitigés et parfois contradictoires. Dans cet article, nous présentons la première analyse comparative anglo-américaine de la relation entre la diversité du voisinage et le capital social et nous démontrons comment cette relation varie selon les catégories ethniques. Nous appliquons des modélisations par équation structurelle à multiniveaux à des données de niveau individuel provenant duCitizen Benchmark Surveyde 2000 pour les États-Unis et duCitizenship Surveyde 2005 pour la Grande-Bretagne. Les résultats démontrent que si, pour le capital social attitudinal, la relation fondamentale négative avec la diversité est évidente parmi les Blancs dans les deux pays, l'effet est cependant beaucoup plus faible ou renversé pour les groupes minoritaires. En ce qui concerne le capital social structurel, la relation négative est évidente pour les minorités, mais pas pour les Blancs, mais cette situation est principalement attribuable à d'autres caractéristiques du voisinage.
Does Immigration Erode Social Capital? The Conditional Effects of Immigration-Generated Diversity on Trust, Membership, and Participation across 19 Countries, 1981–2000
Authors: Kesler Christel , Bloemraad Irene 
Published: May 2010

Abstract.This article is an attempt to qualify existing evidence that increasing diversity is detrimental to a vibrant civil society. We focus specifically on immigration-generated diversity, and argue that while it may have negative effects on some specific civic and political outcomes in some contexts, these effects vary widely across advanced democracies. Our argument rests on analysis of a cross-national, cross-sectional time-series dataset that brings together individual-level World Values Survey data with country-level variables. With these data, we track within-country changes over time in trust and engagement. We show that immigration can have a negative effect on social trust, organizational membership and political engagement, but that institutional arrangements shape this relationship in systematic ways. In more economically equal societies and in more multicultural countries (where cultural minorities are recognized and accommodated), the negative effects of immigration on trust and engagement are mitigated or even reversed. We conclude that there is no general link between immigration-generated diversity and collective-mindedness. Rather, the direction and strength of the relationship depend on institutional and policy contexts.Résumé.Cet article vise à nuancer les preuves existantes que la diversité croissante porte préjudice à une société civile dynamique. Nous nous concentrons particulièrement sur la diversité produite par l'immigration. Nous soutenons que même si elle peut exercer une influence négative sur quelques indices dans certains contextes, ces effets varient considérablement selon le pays examiné parmi les démocraties avancées. Notre argument repose sur l'analyse d'un ensemble de données multinational, transversal et longitudinal qui rassemble des données au niveau individuel duWorld Values Surveyavec des variables au niveau des pays. Au moyen de ces données, nous examinons les changements survenus à l'intérieur des pays, au fil du temps, sur le plan de la confiance et de l'engagement. Nous montrons que l'immigration peut avoir un effet négatif sur la confiance sociale, l'adhésion à des organisations et l'engagement politique, mais que les arrangements institutionnels influencent cette relation de manières systématiques. Dans les sociétés plus économiquement égales et dans les pays plus multiculturels (où les minorités culturelles sont reconnues et accommodées), les effets négatifs de l'immigration sur la confiance et l'engagement sont atténués, voire inversés. Nous concluons qu'il n'y a aucun lien général entre la diversité produite par l'immigration et l'esprit collectif. La direction et la force de la relation entre les deux dépendent plutôt des politiques et des contextes institutionnels.
And Justice for Some: Race, Crime, and Punishment in the US Criminal Justice System
Authors: Hurwitz Jon , Peffley Mark 
Published: May 2010

Abstract.Criminal justice policy in the US has long been exceedingly responsive to public opinion. Unfortunately, public attitudes towards justice in the US are severely bifurcated along racial lines, such that Whites see a system that is “colour-blind” and Blacks perceive one that is severely biased against them. In this paper, we explore the magnitude of this racial cleavage and, more importantly, demonstrate how it impacts differential reactions to events (such as accusations of police brutality) and policies (such as capital punishment) in the justice domain. To the degree that elites base policies on (mainly White) majority preferences, such policies are unlikely to be responsive to the racial discrimination that is a part of the current criminal justice environment.Résumé.La politique pénale aux États-Unis répond énormément à l'opinion publique. Malheureusement, les positions populaires envers la justice américaine sont radicalement divisées suivant l'appartenance raciale. Aux yeux des Blancs, le système est essentiellement neutre envers les groupes raciaux différents, mais les Noirs le perçoivent comme étant fortement entaché de discrimination contre eux. Dans cet article, nous considérons l'étendue de cet écart racial et, surtout, nous démontrons comment ces perceptions entraînent des réactions différentes envers les événements (comme les accusations de brutalité policière) et envers les politiques publiques (comme la peine capitale) dans le domaine de la justice. Dans la mesure où les élites fondent les politiques sur les préférences de la majorité (surtout blanche), il est peu probable que ces politiques puissent remédier à la discrimination raciale qui fait partie du système pénal actuel.
Reduction in greenhouse gas emissions due to the use of bio-ethanol from wheat grain and straw produced in the south-eastern USA
Authors: PERSSON T. , GARCIA A. GARCIA Y , PAZ J. O. , FRAISSE C. W. , HOOGENBOOM G. 
Published: May 2010

SUMMARYBiofuels can reduce greenhouse gas (GHG) emissions by replacing fossil fuels. However, the energy yield from agronomic crops varies due to local climate, weather and soil variability. A variation in the yield of raw material used (feedstock) could also cause variability in GHG reductions if biofuels are used. The goal of the present study was to determine the net reduction of GHG emissions if ethanol from wheat produced in different regions of the south-eastern USA is used as an alternative to gasoline from fossil fuel sources. Two scenarios were investigated; the first included ethanol produced from grain only, and the second included ethanol produced from both grain and wheat straw. Winter wheat yield was simulated with the Cropping System Model (CSM)-CERES-Wheat model for climate, soil and crop management representing six counties in the following USA states: Alabama, Florida and Georgia. Ethanol production was determined from the simulated grain and straw yields together with fixed grain and straw yield ethanol ratios. Subsequently, net reductions in GHG emissions were determined by accounting for the emissions from the replaced gasoline, and by animal feed and electricity that were replaced by ethanol processing co-products. Greenhouse gases that were emitted in the ethanol production chain were also taken into account. Across all locations, the reduction in GHG emissions was 187 g CO2-equivalents/km in the grain-only scenario and 208 g CO2-equivalents/km in the grain and straw scenario. The reductions in GHG emissions varied significantly between locations and growing seasons within the two scenarios. Similar approaches could be applied to assess the environmental impact of GHG emissions from other biofuels.
Effects of betaine supplementation on rumen fermentation, lactation performance, feed digestibilities and plasma characteristics in dairy cows
Authors: WANG C. , LIU Q. , YANG W. Z. , WU J. , ZHANG W. W. , ZHANG P. , DONG K. H. , HUANG Y. X. 
Published: May 2010

SUMMARYThe objective of the present study was to evaluate the effects of betaine supplementation on rumen fermentation, lactation performance and plasma characteristics in dairy cows. Twenty multiparous Holstein dairy cows (597±11·8 kg body weight (BW), 88±4·5 days in milk (DIM) and average daily milk production of 26·3±0·5 kg/cow) were used in a replicated 4×4 Latin square experiment. The treatments were: control (without betaine), low-betaine (LB), medium-betaine (MB) and high-betaine (HB) with 0, 50, 100 and 150 g supplemental anhydrous betaine/cow/day, respectively. Betaine was hand-mixed into the top one-third of the daily ration at feeding. Experimental periods were 30 days with 15 days of adaptation and 15 days of sampling. Dry matter (DM) intake was not affected with increasing the betaine supplementation. There were linear increases in milk yield and fat-corrected milk yield (corrected to 40 g fat/kg) and a linear and quadratic increase in milk fat concentration with increasing the betaine supplementation, whereas the proportion and yield of milk protein and lactose, and feed efficiency, were not affected. Ruminal pH and ammonia N linearly decreased, whereas total volatile fatty acid (VFA) concentration linearly and quadratically increased with increasing the betaine supplementation. The ratio of acetate to propionate (A:P) linearly increased from 3·06 to 3·53 as betaine supplementation increased. Digestibility of DM linearly increased, whereas digestibilities of organic matter (OM), crude protein (CP), neutral detergent fibre (NDF) and acid detergent fibre (ADF) in the total tract were quadratically increased with increasing the betaine supplementation. Plasma concentrations of non-esterified fatty acids (NEFA) and β-hydroxybutyrate (BHBA) were lower for betaine supplementation than for control, and were linearly decreased by betaine supplementation. The results indicate that supplementation of mid-lactation dairy cow diets with betaine increased milk yield through increased feed digestion. Betaine supplementation may benefit lactation performance when methionine supply is limiting.
‘I didn't like just sittin’ around all day’: Facilitating Social and Community Participation Among People with Mental Illness and High Levels of Psychiatric Disability
Authors: MUIR KRISTY , FISHER KAREN R , ABELLO DAVID , DADICH ANN 
Published: May 2010

AbstractPeople with mental illness can be profoundly disabled and at risk of social exclusion. Transitional models of supported housing have limited effectiveness in improving community participation. Stable, individualised psychosocial housing support programmes have been found to assist in improving mental health and decreasing hospitalisations, but little is understood about whether or how these programmes facilitate social and community participation. This article argues that, if certain supports are available, supported housing models can assist people with high levels of psychiatric disability to participate meaningfully in the community. To make this case, the article uses findings of a longitudinal evaluation of a supported housing model in Australia: the Housing and Accommodation Support Initiative Stage One (HASI). HASI is a partnership between the New South Wales Government Departments of Health and Housing and non-government organisations. It is a coordinated approach that provides clients with housing and community-based clinical support, as well as support with daily living skills and community participation. An analysis of questionnaire, database, interview and clinical data is used to demonstrate how HASI contributes to increased social and community participation. The article concludes with policy implications for supported housing models that aim to facilitate meaningful community participation for people with mental illness.
Linguistic cleanliness is next to godliness: taboo and purism
Authors: Burridge Kate 
Published: May 2010

This paper explores popular perceptions of language, in particular linguistic prescription. It focuses not on formal acts of censorship such as might be carried out by a language academy, but on the attitudes and activities of ordinary people in, say, letters to newspapers or comments on radio. In these contexts, language users act as self-appointed censors and take it upon themselves to condemn those words and constructions that they feel do not measure up to the standards they perceive should hold sway.People's concerns about language and the kind of linguistic censorship and puristic activities that accompany them belong to our tabooing behaviour generally. Prescriptive practices are part of the human struggle to control unruly nature – in this case, to define language and to force the reality of ‘the boundless chaos of a living speech’ (as Samuel Johnson put it in his Preface) into neat classificatory systems. As with tabooing practices generally, linguistic purists see a very clear distinction between what is clean and what is dirty – in this case, what is desirable and undesirable in a language. Linguists who challenge these prescriptions are challenging their ‘cherished classifications’. Small wonder there is often such a schism between linguistics and the wider community.
Do Neotropical peccary species (Tayassuidae) function as ecosystem engineers for anurans?
Authors: Beck Harald , Thebpanya Paporn , Filiaggi Melissa 
Published: May 2010

Abstract:The concept of ecosystem engineering has catalysed novel approaches and models for non-trophic species interactions and ecosystem functions. Ecosystem engineers physically modify abiotic and biotic environments, thereby creating new habitats that can be colonized by a new suite of species. In the Peruvian Amazonas, we tested whether peccaries (Tayassuidae) function as ecosystem engineers by creating and maintaining wallows. Such wallows could be critical aquatic habitats and breeding sites for anuran species during dry seasons. We compared hydroperiods of 21 peccary wallows and 13 naturally formed ponds across three dry seasons and found that wallows had a consistently higher mean water surface area than ponds. We also examined the pH, dissolved oxygen and temperature, and found no significant differences in these parameters between water bodies. Wallows had a significantly higher density of tadpoles, metamorphs and adult anurans, as well as higher β-diversity and species richness than ponds. This study not only provides the first systematic evidence of the ecosystem engineering processes of peccaries, but also reveals the positive consequences of such for anuran species.
Prey composition of the pitcher plantNepenthes madagascariensis
Authors: Rembold Katja , Fischer Eberhard , Wetzel Markus A. , Barthlott Wilhelm 
Published: May 2010

Abstract:Nepenthes madagascariensisis a carnivorous plant which captures its prey in pitcher-like leaves. It is endemic to Madagascar where it occurs along the eastern coast. Altogether 94.3% of its prey animals belong to three taxa: Formicidae (80.2%), Diptera (9.7%) and Coleoptera (4.4%). The prey compositions of the dimorphic lower and upper pitcher types differ significantly, especially in the markedly higher proportion of ants in lower pitchers and the higher number of flying insects in upper pitchers. A comparison concerning the trap frequency of taxa with literature data from AsianNepenthesspecies showed that the upper pitchers ofN. madagascariensiscontained much higher proportions of Coleoptera, Diptera and Lepidoptera; these differences may partly be due to seasonal reasons. No significant correlation could be established between the numbers of prey items with pitcher size. This paper is the first characterization of the prey composition of the little knownN. madagascariensis.
Population structure, growth rates and spatial distribution of two dioecious tree species in a wet forest in Puerto Rico
Authors: Forero-Montaña Jimena , Zimmerman Jess K. , Thompson Jill 
Published: May 2010

Abstract:Dioecious plants often exhibit male-biased sex ratios and sexual differences in life history traits such as plant size, growth rate and frequency of flowering, which arise from the different costs of reproduction for male and female plants. In tropical dioecious species sexual differences in reproductive costs have been demonstrated for several subcanopy species, but few canopy dioecious trees have been studied. We recorded the sexual expression of c. 2600 trees of Cecropia schreberiana and Dacryodes excelsa, two canopy dioecious species, during several censuses over 2 y in a 16-ha plot located in ‘subtropical wet forest’ in the Luquillo Mountains, Puerto Rico. There were similar numbers of male and female trees of C. schreberiana but D. excelsa had a female-biased population. Cecropia schreberiana showed no differences in male and female diameter distributions or growth rates, suggesting that reproductive maturation and longevity are similar for both sexes. This lack of differences in size and growth rate in C. schreberiana may result from mechanisms to compensate for the higher cost of reproduction in females, no resource limitation related to its pioneer life-history, or similar male and female reproductive costs. In contrast, D. excelsa males were larger than females, probably because males grow slightly faster than females. This sexual difference in D. excelsa may reflect a higher cost of reproduction in females than in males. Spatial segregation of males and females into different habitats is not common in tropical forest and neither C. schreberiana nor D. excelsa males and females exhibited significant spatial segregation. The contrasting results for these two canopy species reflect their different life history strategies in this hurricane-affected forest.
Aerial surveillance by a generalist seed predator: food resource tracking by Meyer's parrotPoicephalus meyeriin the Okavango Delta, Botswana
Authors: Boyes Rutledge S. , Perrin Michael R. 
Published: May 2010

Abstract:As a proven food resource generalist, Meyer's parrot (Poicephalus meyeri) was expected to track the availability of all significant food resources in its diet over time. Here we recorded all feeding activity during 366 standardized road transects for correlation with an index of relative food resource abundance over 18 mo. As expected, Meyer's parrot made food resource decisions according to relative abundance at landscape level. Feeding activity on food resources available throughout the year (e.g. ripeKigelia africanafruit) or not visible from the air (e.g. unripeDiospyros lycoidesfruit), however, did not correlate significantly with fluctuations in their relative resource abundance. In addition, over 70% of all feeding bouts were in the high canopy and over 70% of all food items consumed formed bi-coloured displays. The influence of estimated protein and energy acquisition rates from different food resources was insignificant. Therefore, important selection criteria for utilization by Meyer's parrot include relative abundance and visibility from the air (i.e. food resources with the highest probability of encounter when dispersing from a central roost). Sensitivity to fluctuations in resource abundance at landscape level demonstrates the relative importance of maximizing net gain per unit foraging time by minimizing foraging flight distance.