There has been an increasing interest in the evolution of urban forests. This research uses historic and digital aerial photography
to quantify changes in tree density in Los Angeles, California since the 1920’s. High-resolution geographic information system
analysis (4 to 6 time periods) of three regions (San Fernando Valley, Hollywood, Los Angeles Basin) of Los Angeles reveals
that there has not always been an increase in tree density with time. Tree densities on public and private land were highest
in the 1940’s in Hollywood, while the San Fernando Valley and Los Angeles Basin experienced a near linear increase in tree
density on both private and public land since the 1920’s. When historic tree density reconstructions were examined for the
15 Los Angeles city council districts from the 1920’s, 1950’s and 2006, most districts in Los Angeles have experienced a significant
increase in tree density, however, there has been wide variation in tree densities among city council districts. Trees densities
have generally been higher on private land since the 1920’s and currently tree densities on private land are significantly
higher than on public land. Results suggest the evolution of urban forests in Los Angeles mirrors the dynamics of urban forests
in desert and grassland cities. It is possible to reconstruct the development of urban forests in sections of cities using
historic and contemporary aerial photography. We estimated that Los Angeles averages approximately 104 trees per hectare (82
private land, 22 public land) based on 2006 imagery at 0.3 m resolution, however, field validation suggests that we identified
only 73% of trees. Although there is still space to plant trees on public land, private land owners will need to be heavily
involved in order to achieve the goals of Los Angeles’ Million Tree Initiative. 相似文献
In contemporary culture of Empire and its ‘cult of the self’, to be a young person means to be recognized, and the display of the self is read as a display of value. However, working-class girls who are economically oppressed, marked by a history of racialization, colonization, and stigmatization are assigned no value, thus remaining unrecognized. In this article, I explore the affective economies circulating for female youth who are navigating both marginal social conditions and experiences of long-standing exclusion in urban Canada. This article draws from a two-year long critical and visual ethnography conducted at a drop-in social service center for youth and the adjacent neighborhoods, where I explored the everyday gendered youth culture of a group of Canadian, working-class girls who are marked as ‘a problem’. Here I uncover the role of affect in working-class girls’ attempts to be recognized in various aspects of their everyday life. I also discuss how affective economies operate as the present expression of the girls’ collective histories to reveal the structures in place that produce the abject girl. 相似文献
Patterns of articles published in The Career Development Quarterly (CDQ) from 1990 to 2011 were reviewed in this metastudy. Author characteristics (e.g., gender, employment setting, nation of domicile) and article characteristics (e.g., topic, type, design, sample, sample size, participant type, statistical procedures and sophistication) were described and analyzed for trends over time. Significant changes were noted in increased proportions of female authors, international contributors, research articles, more sophisticated research designs, and decreased numbers of practitioner‐authors. These trends highlight a robust journal that continues to evolve to address changing career development and counseling challenges. 相似文献
The Analysis of Verbal Behavior - We evaluated the use of behavioral skills training (BST) to train caregivers to conduct procedures commonly associated with mand training. We trained two... 相似文献
Unlike the United Kingdom and other nations that mandate youth participation to some degree, U.S. policies instead tend to inhibit child participation rather than encourage it. Given these policy contexts, it can be challenging to locate spaces where robust opportunities for democratic participation and student voice exist. We use this article as an opportunity to examine the disciplinary, philosophical and methodological approaches that have framed youth participation in youth contexts. We conclude by identifying critical issues of citizenship and belonging that must be considered in participatory research. 相似文献
Viewing the popular process of making “scrapbooks” as a particular type of autobiographical occasion, I analyze interviews with scrapbookers and others who make up the scrapbooker's community, including industry workers and biographical others (i.e., family and friends). By considering scrapbooks within the autobiographical community in which they are created, I am able to scrutinize the structure of the narratives they contain, the role of the audience in their creation, and the emergence of norms of remembrance among scrapbookers. The narratives recorded in scrapbooks emerge from the bottom up and suggest that scrapbooking is a way to demonstrate the biographical stability necessary to craft an authenticity narrative. Further, I explore how scrapbookers “do autobiography” by uncovering their decision‐making process regarding what is worth memorializing. Scrapbookers work through a mnemonic checklist assessing special events and everyday life for its “scrapworthiness.” This paper's contribution centers on describing the process and the content of these atypical autobiographical occasions. 相似文献
ABSTRACTVery old adults are one of the fastest-growing age groups worldwide. Yet they rarely constitute a targeted group for public policies. Drawing on the results of the centenarian studies presented in this special issue, we highlight major challenges that arise from the increase of this population. We outline several promising approaches for policy makers and professionals to develop evidence-based policies and programs that are tailored to the needs of very old adults and their families. We focus our discussion on three key topics essential to life care: the importance of integrated care to meet the complex care needs of the very old; the balance between formal and informal care; and the development of suitable places for living. Besides more specific measures, we propose that policies promoting the social integration of very old adults in their communities would be particularly helpful, as these may benefit not only the very old and their families but also individuals of all ages. We conclude that the development of suitable policies addressing the needs of the very old will benefit from future investigation of cross-cultural similarities and differences in centenarians’ characteristics, available services, as well as life conditions they encounter in communities and institutional contexts. 相似文献
Since 2011, a new mobilization strategy has emerged in the Beijing anti-domestic violence (ADV) movement: performance art public interest advocacy, consisting of live performances in public places for public audiences (A CDB special report, 2013). Drawing on the social movement literature, particularly concepts of political opportunity and mobilizing structure, framing strategy, and tactical innovation (Political process and the development of black insurgency, 1930–1970, 2nd edn, 1999; Dynamics of contention, 2001), this article investigates the following questions: What was the rationale behind the introduction of performance art advocacy into the tactical repertoire of Beijing ADV organizations, and what impact has this tactic had on the Beijing ADV movement? Based on content analysis of 14 semi-structured interviews with ADV movement activists and media reports, it will illustrate that this innovative strategy relied heavily on professional Beijing ADV organizations; performance art public interest advocacy broadened and mobilized the Beijing ADV movement to work toward improved legal protections against DV, triggered nationwide responses, and improved citizens’ awareness of DV.
The issue of sexuality for young disabled women is not often talked about in society. Our study aimed to explore four young physically disabled women’s experiences and perspectives regarding sexuality and disability. We used PhotoVoice, a participatory action research method which uses photographs, to capture and convey our participants’ concerns. Through their photographs they showed that everyday interactions with others, particularly strangers or meeting people for the first time, were made difficult by how they were always seen as having a disability. Other parts of their identity were not recognised. The change the young women wanted was for people to see them as young women and not just as disabled. 相似文献