1,720,973 research outputs found
Going Beyond Counting First Authors in Author Co-citation Analysis
Get PDFThe present study examines one of the fundamental aspects of author co-citation analysis (ACA) - the way co-citation
counts are defined. Co-citation counting provides the data on which all subsequent statistical analyses and mappings
are based, and we compare ACA results based on two different types of co-citation counting - the traditional type that
only counts the first one among a cited work's authors on the one hand and a non-traditional type that takes into
account the first 5 authors of a cited work on the other hand. Results indicate that the picture produced through this non-traditional author co-citation counting contains more coherent author groups and is therefore considerably clearer. However, this picture represents fewer specialties in the research field being studied than that produced through the traditional first-author co-citation counting when the same number of top-ranked authors is selected and analyzed. Reasons for these effects are discussed
Variations on the Author
Get PDF“Variations on the Author” discusses two of Eduardo Coutinho’s recent films (Um Dia na Vida, from 2010, and Últimas Conversas, posthumously released in 2015) and their contribution to the general question of documentary authorship. The director’s filmography is characterized by a consistent yet self-effacing form of authorial self-inscription: Coutinho often features as an interviewer that rather than express opinions propels discourses; an interviewer that is good at listening. This mode of self-inscription characterizes him as an author who is not expressive but who is nonetheless markedly present on the screen. In Um Dia na Vida, however, Coutinho is completely absent form the image, while Últimas Conversas, on the contrary, includes a confessional prologue that moves the director from the margins to the center of his films. This article examines the ways in which these works stand out in the filmography of a director who offers new insights into the notion of cinematic authorship
Appropriate Similarity Measures for Author Cocitation Analysis
Get PDFWe provide a number of new insights into the methodological discussion about author cocitation analysis. We first argue that the use of the Pearson correlation for measuring the similarity between authors’ cocitation profiles is not very satisfactory. We then discuss what kind of similarity measures may be used as an alternative to the Pearson correlation. We consider three similarity measures in particular. One is the well-known cosine. The other two similarity measures have not been used before in the bibliometric literature. Finally, we show by means of an example that our findings have a high practical relevance.information science;Pearson correlation;cosine;similarity measure;author cocitation analysis
Serotonergic Regulation of Adult Neurogenesis in the Dentate Gyrus
Get PDFNeurogenesis is the process through which adult neural stem cells (ANSCs) produce new neurons and glial cells. The number of neurons generated from neurogenesis can affect learning, memory, mood, and the onset of several mental illnesses. For example, the neurogenesis hypothesis of depression states that decreased neurogenesis increases an individual’s vulnerability to depression. Other factors, such as stress, precipitate many mental illnesses, as well as trigger a decrease in neurogenesis. Many neurotransmitters, such as serotonin, regulate neurogenesis; however, it is unclear exactly how serotonin inputs may be regulating the developmental stages of neurogenesis. We believe that the 5HT1a receptor (5ht1ar) is integral to serotonergic regulation of neurogenesis and hypothesize that administration of selective serotonin reuptake inhibitors (SSRIs) will increase rates of neurogenesis in a wild type model, but not in a conditional knockout model. Using in situ hybridization and gene trap reporter mice, we first confirmed the presence of 5htr1a in ANSC cells. In our pilot experiment, we administered fluoxetine (a commonly administered SSRI) to a cohort of male and female mice over a period of 2 weeks and observed an increase in stem cell proliferation. We then took a functional genetic approach of conditionally deleting Htr1a (the gene encoding for 5ht1ar) using CreER drivers specifically in ANSCs and immunohistochemistry to determine how stem cells react to loss of Htr1a. This experiment showed a difference in morphology and developmental stage of stem cell progenitors between the wild-type and conditional knockouts mice. The presence of the 5htr1a receptor shows a differential response in ANSCs to varying levels of serotonin. Our data provides evidence for a significant push towards stem cell differentiation and progenitor cell maturation when ANSCs expressed 5ht1ar and were in the presence of fluoxetine. Further knowledge on how serotonin and the 1a receptor modulate adult neurogenesis can help us have a better understanding of diseases, especially depression, that arise from serotonin deficiency.Bachelor of Scienc
Assessing Climate Change Impacts on Streamflow in South Carolina\u27s River Basins
No full text2012 S.C. Water Resources Conference - Exploring Opportunities for Collaborative Water Research, Policy and Managemen
Journalism for a sustainable future - Defining the principles and exploring the role of human centric stories
No full textSustainability is a multifaceted concept that encompasses the interdependent dimensions of environmental stewardship, economic development, and social equity. Effectively communicating this complexity to the public requires nuanced, context-sensitive storytelling that accounts for historical actions, current consequences, and future mitigation strategies. However, sustainability often does not align easily with conventional journalistic practices. This research-creation thesis developed and tested a pragmatic guide aimed at integrating sustainability principles into journalistic work. The guide is informed by participatory action research and a qualitative survey conducted with members of Concordia University’s sustainability community. These insights helped identify key elements necessary for meaningful communication about sustainability in journalism. The guide was then applied in the field through the creation of audio and visual stories featuring two Concordia initiatives: Cultivation and Hive Free Meals.
While Bonfadelli (2010) observes that sustainable journalism remains marginal due to the often invisible nature of sustainability issues, this thesis argues that many tangible, solution-oriented initiatives exist and deserve greater visibility. Journalists have a responsibility to bring these efforts to the forefront, enabling public engagement and collective action. Our future depends on present decisions, and through intentional storytelling, journalism can play a transformative role in shaping a more sustainable society
HARNESSING THE EMERGING PUBLIC REALM: Tactical Urbanism at the Crossroads of Grassroots Activism and Strategic Spatial Planning
No full textCities across the globe face escalating challenges driven by rapid population growth, socio-economic disparities, underfunded infrastructure, and environmental crises, compounded by the unpredictability of modern urban dynamics. Nowhere are these issues more pronounced than in struggling urban communities, where surging costs of living—particularly for essentials like food, housing, and transportation—intensify existing inequities and jeopardize the ability of residents to sustain a decent quality of life. Traditional urban planning models often fall short in addressing these layered issues, overlooking the diverse and evolving needs of urban populations.
In response to these systemic pressures, Tactical Urbanism has emerged as a promising approach. Defined by its "short-term, low-cost, and scalable interventions," it offers grassroots, community-scale solutions that resist systems prioritizing capital accumulation over communal welfare. These practices foster a collective vision of cities that celebrate shared spaces, cultural liberation, and the common good, acting as foundational steps toward addressing entrenched urban inequalities. However, as Tactical Urbanism becomes integrated into formal planning processes and increasingly intersects with privatization, concerns arise about its co-optation by neoliberal agendas, potentially diluting its transformative potential.
This research critically examines the evolution of Tactical Urbanism through interviews with Chicago-based practitioners, exploring its impacts on stakeholder dynamics, its negotiation within institutional frameworks, and its role in either challenging or perpetuating existing power structures. By analyzing these developments, the study investigates Tactical Urbanism’s broader implications for urban equity, resilience, and the future of inclusive city-making
Dispelling the Myths Behind First-author Citation Counts
Get PDFWe conducted a full-scale evaluative citation analysis study of scholars in the XML research field to explore just how different from each other author rankings resulting from different citation counting methods actually are, and to demonstrate the capability of emerging data and tools on the Web in supporting more realistic citation counting methods. Our results contest some common arguments for the continued
use of first-author citation counts in the evaluation of scholars, such as high correlations between author rankings by first-author citation counts and other citation
counting methods, and high costs of using more realistic citation counting methods that are not well-supported by the ISI databases. It is argued that increasingly available digital full text research papers make it possible for citation analysis studies to go beyond what the ISI databases have directly supported and to employ more
sophisticated methods
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