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851.
Meghan?L.?AvolioEmail author Diane?E.?Pataki Stephanie?Pincetl Thomas?W.?Gillespie G.?Darrel?Jenerette Heather?R.?McCarthy 《Urban Ecosystems》2015,18(1):73-86
Urban plant biodiversity is influenced by both the physical environment and attitudes and preferences of urban residents for specific plant types. Urban residents are assumed to be disconnected from their immediate environment, and cultural and societal factors have been emphasized over environmental factors in studies of landscaping choices. However, we postulate that local climatic and environmental factors can also affect preferences for plant attributes. Therefore, spatial and temporal patterns in urban tree biodiversity may be driven not only by the direct effect of environmental variables on plant function, but also by the effect of environmental variables on attitudes toward trees and associated choices about which types of trees to plant. Here, we tested the relative effects of socio-economic and local environmental factors on preferences toward tree attributes in five counties in southern California in and surrounding Los Angeles, based on 1,029 household surveys. We found that local environmental factors have as strong an effect on preferences for tree attributes as socio-economic factors. Specifically, people located in hotter climates (average maximum temperature 25.1 °C) were more likely to value shade trees than those located in cooler regions (23.1 °C). Additionally, people located in desert areas were less likely to consider trees to be important in their city compared with people located in naturally forested areas. Overall, our research demonstrates the inherent connections between local environmental factors and perceptions of nature, even in large modern cities. Accounting for these factors can contribute to the growing interest in understanding patterns of urban biodiversity. 相似文献
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854.
Anna E. Bargagliotti 《统计学通讯:模拟与计算》2015,44(2):533-550
We explore criteria that data must meet in order for the Kruskal–Wallis test to reject the null hypothesis by computing the number of unique ranked datasets in the balanced case where each of the m alternatives has n observations. We show that the Kruskal–Wallis test tends to be conservative in rejecting the null hypothesis, and we offer a correction that improves its performance. We then compute the number of possible datasets producing unique rank-sums. The most commonly occurring data lead to an uncommonly small set of possible rank-sums. We extend prior findings about row- and column-ordered data structures. 相似文献
855.
Joe Murphy Y. Patrick Hsieh Michael Wenger Annice E. Kim Rob Chew 《Information, Communication & Society》2019,22(5):622-636
ABSTRACTSocial media data are increasingly used by researchers to gain insights on individuals’ behaviors and opinions. Platforms like Twitter provide access to individuals’ postings, networks of friends and followers, and the content to which they are exposed. This article presents the methods and results of an exploratory study to supplement survey data with respondents’ Twitter postings, networks of Twitter friends and followers, and information to which they were exposed about e-cigarettes. Twitter use is important to consider in e-cigarette research and other topics influenced by online information sharing and exposure. Further, Twitter metadata provide direct measures of user’s friends and followers as opposed to survey self-reports. We find that Twitter metadata provide similar information to survey questions on Twitter network size without inducing recall error or other measurement issues. Using sentiment coding and machine learning methods, we find Twitter can elucidate on topics difficult to measure via surveys such as online expressed opinions and network composition. We present and discuss models predicting whether respondents’ tweet positively about e-cigarettes using survey and Twitter data, finding the combined data to provide broader measures than either source alone. 相似文献
856.
Tina Fitzgerald Alice Fothergill Kristin Gilmore Katherine Irwin Charlotte A. Kunkel Suzanne Leahy Joyce M. Nielsen Eve Passerini Mary E. Virnoche Glenda Walden 《Sociological Forum》1995,10(3):493-498
In the June issue ofSociological Forum, several authors addressed the question, What's Wrong with Sociology. Answers included increased fragmentation of the discipline, and the lack of an identifiable cumulative core of sociological knowledge. This paper examines many of the claims made by the contributors to the June 1994Sociological Forum, reframes their arguments, and by placing debates regarding the problems in sociology in a broader perspective, identifies many of the recent advances made by the discipline. Focusing on such notable contributions to the field as feminist and postmodern scholarship, we locate the positive side of multiple perspective research.Feminist Scholars in Sociology is a collective of researchers and teachers at the University of Colorado interested in exploring and sharing feminist theory and methodology. 相似文献
857.
Felicity Copeland Hannah G. Dahlen Caroline S.E. Homer 《Women and birth : journal of the Australian College of Midwives》2014,27(2):126-131
IntroductionThis study seeks to explore midwives’ perceptions about childbirth and in particular their beliefs about normality and risk. In the current climate of increasing interventions during labour, it is important to understand the thought processes that impact on midwifery care in order to examine whether these beliefs influence midwifery clinical decision-making.Method12 Midwives who worked in a variety of metropolitan hospitals in Sydney, Australia were interviewed about how they care for women during labour. The study utilised an inductive qualitative design using photo elicitation during the interview process.ResultsSix themes emerged from the data that clearly indicated midwives felt challenged by working in a system dominated by an obstetric model of care that undermined midwifery autonomy in maintaining normal birth. These themes were: desiring normal, scanning the environment, constructing the context, navigating the way, relinquishing desire and reflecting on reality. Most midwives felt they were unable to practice in the manner they were philosophically aligned to, that is, promoting normal birth, as the medical model restricted their practice.DiscussionThe polarised views of childbirth held by midwives and obstetricians do little to enhance normal birth outcomes. Midwives in this study expressed frustration that they were unable to practice midwifery in a way that reflected their belief in normal birth. This, they cite is a result of the oppressive obstetric model prevalent in maternity care facilities in Sydney and the over use of technological interventions during childbirth. 相似文献
858.
Keith J. Horvath Alex Iantaffi Rebecca Swinburne-Romine Walter Bockting 《Journal of homosexuality》2014,61(8):1117-1130
The aim of this study was to compare the mental health, substance use, and sexual risk behaviors of rural and non-rural transgender persons. Online banner advertisements were used to recruit 1,229 self-identified rural and non-rural transgender adults (18+ years) residing in the United States. Primary findings include significant differences in mental health between rural and non-rural transmen; relatively low levels of binge drinking across groups, although high levels of marijuana use; and high levels of unprotected sex among transwomen. The results confirm that mental and physical health services for transgender persons residing in rural areas are urgently needed. 相似文献
859.
The theory of basic human value developed by Shalom Schwartz has held a dominant place in the field of value studies for at least two decades. Despite of some modest adaptations, the theory has maintained its original form. Still, an increasing number of critical discussions have recently been published throwing doubt upon universality of its inner structure (e.g. Mohler and Wohn in Persönliche Wertorientierungen im European Social Survey, ZUMA-Arbeitsbericht, 2005; Clercq 2006; Perrinjaquet et al. in J Res Pers 41:820–840, 2007; Davidov and Schmidt in Measuring meaningful data in social research, Acco, Leuven, pp 373–386, 2007; Davidov et al. in Public Opin Quart 72:420–445, 2008; Davidov in Surv Res Methods 2:33–46, 2008; Knoppen and Saris in Surv Res Methods 3:91–103, 2009a; Knoppen and Saris 2009b; Fischer et al. in J Cross Cult Psychol 41:135–151, 2010). Most of these studies have proposed that the shortcomings of that model can be improved through unification of some adjacent value types (e.g. Davidov and Schmidt in Measuring meaningful data in social research, Acco, Leuven, pp 373–386, 2007; Davidov et al. in Public Opin Quart 72:420–445, 2008; Davidov in Surv Res Methods 2:33–46, 2008). However, Knoppen and Saris (Surv Res Methods 3:91–103, 2009a; Knoppen and Saris 2009b) have showed that the given grouping of factors was a consequence of misspecifications in the model and proposed an alternative structure with 19 value types, which has been largely confirmed by several recent papers (Cieciuch and Schwartz in J Pers Assess 94:321–328, 2012; Beierlein et al. in Surv Res Methods 6:25–36, 2012). Current study will also test the new model, but contrarily to cited papers, a representative national sample is used, which raises the robustness of findings. The data is from Estonia and collected in late 2008. Due to the existence of large ethnic minority in Estonian society, the sample allows additionally testing the equivalence of the measurement in the two subpopulations. This study shows that the alternative value-structure, proposed by Knoppen and Saris, applies well to the representative Estonian data. 相似文献
860.
Debates about genomic science have raised questions about the implications for ethics and accountability. Accountability has external and internal aspects. Whereas ethical review, including attention to appropriate consent procedures, has been central to 'giving an account' externally, there are also issues internal to the practice of science itself. The pursuit of truth is central to the scientific endeavour, but truths can sometimes be 'inconvenient', leading to complex questions of accountability that go beyond the issues of consent. This is illustrated by the case of the Havasupai. 相似文献