Do trees flower longer in the city? A comparison of flowering eucalyptus trees in streets,remnants and continuous forest and their association with nectarivorous birds

Human-dominated environments are often subjected to increased nutrient and moisture regimes which have the potential to influence the flowering phenology of plants. Protracted flowering periods within urban landscapes may result in increased food resources, in the form of nectar, and this high resource availability may support a high density of nectarivorous birds within cities. In order to determine whether there was a difference in the productivity and flowering period associated with urbanisation, we compared the number of flowers produced and duration of flowering period for three species of native tree that were present in streetscapes, remnant vegetation and continuous forest. We also recorded the presence of nectarivorous parrots at flowering trees to determine if the presence of nectarivores was associated with flower productivity. All three species in streetscapes produced more flowers and flowered for longer than in remnants and continuous forest. The number of flowers per tree significantly predicted the presence of nectarivorous parrots in streetscapes. This study demonstrates that the flowering phenology of plants within streetscapes can differ from continuous forest, with remnants appearing to be intermediate. This increased flower productivity within urban landscapes may be partially responsible for the high abundance of nectarivorous parrots within some cities.     

Estimation of Acute Toxicity by Fitting a Dose-Time-Response Surface

In acute toxicity testing, organisms are continuously exposed to progressively increasing concentrations of a chemical and deaths of test organisms are recorded at several selected times. The results of the test are traditionally summarized by a dose-response curve, and the time course of effect is usually ignored for lack of a suitable model. A model which integrates the combined effects of dose and exposure duration on response is derived from the biological mechanisms of aquatic toxicity, and a statistically efficient approach for estimating acute toxicity by fitting the proposed model is developed in this paper. The proposed procedure has been computerized as software and a typical data set is used to illustrate the theory and procedure. The new statistical technique is also tested by a data base of a variety of chemical and fish species.     

ADOPTION:

In this article, we focus on how understandings of the past influence the process of integrating older special needs children into family life. We present the stories of two families who adopted older special needs children as they reconstructed the past, experinced the present, and projected the future. We draw upon social, pragmatic, and postmodern theories of the past to guide our interpretations and understandings of these families' adoption experiences. The dominant ideology of family influenced their story construction, and it was against this conception that their stories were evaluated. We followed the Litners and the Becks as they used the past to create stories that enabled and disabled their family life in the present and in the future. From the Litners' and the Becks' stories, we learned that when families are too limited by a cultural conception of an ideal adoptive family, their ability to use the past to create stories to help them live in the present and to project a shared future becomes restricted.
Our adoption failed because we understimated the past and overstimated our ability to create stories with happy endings. (Mrs. Beck)     

Gender role stereotypes in fine art: A content analysis of art history books

This paper reports findings from a content analysis of the gender role images in the works of Gothic, Renaissance, Baroque and Modern art in three major Western art history textbooks. Males were overrepresented as subjects; males and females were presented in stereotypic roles and activities; the Madonna and the idle nude were common female images; males were overrepresented in portraits. Fine art as presented in major art history books was found to embody the gender role stereotypes of the wider society.     

RELATIVE ADVANTAGE

A concept of relative advantage is outlined in this article. Based on an oppressed group's selective assessment of their circumstances or character or values in comparison with either those of another group or at different points of time for their own group, the consensual image that they are relatively better off or relatively superior in some way is constructed. Drawing on the experiences of three oppressed groups, it is suggested in this article that the reality construction process occurs in various circumstances, and that the shape of relative advantage is defined differently, possibly in accord with this. It is concluded that this perception might help to engender a sense of group honor and also serve as a strategic factor in the tamping down of discontent and in the maintenance of the oppressive social order.     

The impact of school furniture on fourth grade children's on-task and sitting behavior in the classroom: a pilot study

Schoolchildren spend much of their day sitting in classroom furniture that is often too large or too small. To assess the impact of the size and fit of school furniture on the sitting and task behaviors of schoolchildren, 63 fourth-graders were observed while seated in 2 different sizes, types, and arrangements of furniture in their classroom. A correlated group design was used to compare the sitting and task behaviors of the students while seated in their traditional classroom furniture consisting of tables and chairs, and while sitting in smaller, appropriately sized desks and chairs, arranged in clusters and then in rows. The results indicate that the children sat better and were on task more when seated in the smaller furniture, as indicated by a significant main effect for condition, F = 51.478 (4, 330), p<0.05. There was no difference in sitting and task behaviors with the new furniture arranged in clusters compared to rows. Girls showed a slightly greater improvement compared to boys, and there was a significant correlation between better sitting positions and being on-task (r = 0.549, p<0.01). These findings indicate that students would likely benefit from sitting in smaller furniture that fits their size better.     

Diagonal latent block model for binary data

This paper addresses the problem of co-clustering binary data in the latent block model framework with diagonal constraints for resulting data partitions. We consider the Bernoulli generative mixture model and present three new methods differing in the assumptions made about the degree of homogeneity of diagonal blocks. The proposed models are parsimonious and allow to take into account the structure of a data matrix when reorganizing it into homogeneous diagonal blocks. We derive algorithms for each of the presented models based on the classification expectation-maximization algorithm which maximizes the complete data likelihood. We show that our contribution can outperform other state-of-the-art (co)-clustering methods on synthetic sparse and non-sparse data. We also prove the efficiency of our approach in the context of document clustering, by using real-world benchmark data sets.     

Drinking places: Young people and cultures of alcohol consumption in rural environments

This paper focuses on the contemporary British moral panic about young people and the consumption of alcohol in public space. Most of this public debate has focused on binge drinking in urban areas as a social problem. Here, we consider instead the role of alcohol in rural communities, and in particular alcohol consumption in domestic and informal spaces, as well as the formal drinking landscape of pubs and bars. Drawing on empirical work (including a survey, interviews and participant observation) in rural Cumbria, UK we explore the specific socio-spatial nature of local attitudes to alcohol consumption and its regulation. In doing so, we reflect on the nature of rural lifestyles, community spaces and intergenerational relations. The paper concludes by highlighting some of the implications for health promotion professionals of the generally positive attitude towards young people's drinking in the rural area where the research was conducted. It also draws attention to the need for academics to pay closer attention to the ways that moral panics about binge drinking are implicitly producing a monolithic image of alcohol consumption in urban areas that fails to acknowledge the socio-spatially differentiated nature of practices of alcohol consumption and regulation.     

Factors Motivating Individuals to Take Precautionary Action for an Expected Earthquake in Istanbul

Istanbul is expected to experience an earthquake in the near future, but individuals show limited interest in preparing for it. This study aims to identify the factors associated with taking action to prepare for an earthquake and mitigate its effects at the individual level. A field survey was carried out in 2007 in two districts of Istanbul with different levels of earthquake risk. Within these districts, three socioeconomic levels were considered. A total of 1,123 people were interviewed face to face. Analysis indicated that the educational level of the respondents was the leading factor associated with taking at least three measures, followed by living in a higher earthquake risk area, having participated in rescue and solidarity activities in previous earthquakes, a higher level of knowledge about earthquakes, home ownership, a higher score for action‐stimulating attitudes, being younger, and a higher general safety score, in that order. The findings pointed to the role of knowledge about earthquakes and possible mitigation/preparedness measures, and thus the importance of developing effective awareness programs. Such programs should also consider the characteristics of different groups in the population. Motivated individuals, such as those who have participated in rescue and solidarity activities in previous earthquakes, could be involved in reaching other people.