The gender paradox in suicidal behavior and its impact on the suicidal process
DL Schrijvers, J Bollen, BGC Sabbe - Journal of affective disorders, 2012 - Elsevier
BACKGROUND: An important gender difference has been reported regarding suicidal
behavior with an overrepresentation of females in nonfatal suicidal behavior and a …
behavior with an overrepresentation of females in nonfatal suicidal behavior and a …
A systematic review of measures of self-reported adherence to unsupervised home-based rehabilitation exercise programmes, and their psychometric properties
Background Adherence is an important factor contributing to the effectiveness of exercise-based
rehabilitation. However, there appears to be a lack of reliable, validated measures to …
rehabilitation. However, there appears to be a lack of reliable, validated measures to …
Co-benefits of climate change mitigation policies: literature review and new results
J Bollen, B Guay, S Jamet, J Corfee-Morlot - 2009 - oecd-ilibrary.org
… A few recent studies permit such an integrated analysis (Bollen et al. 2007; Reilly et al.
2007… change mitigation policies on outdoor local air pollution (Bollen et al. 2007), as well as to …
2007… change mitigation policies on outdoor local air pollution (Bollen et al. 2007), as well as to …
Twitter mood predicts the stock market
Behavioral economics tells us that emotions can profoundly affect individual behavior and
decision-making. Does this also apply to societies at large, ie can societies experience mood …
decision-making. Does this also apply to societies at large, ie can societies experience mood …
ChatGPT: five priorities for research
… Johan Bollen … Johan Bollen … Johan Bollen is a professor of informatics and cognitive
science, and a co-director of the Center for Social and Biomedical Complexity, at Indiana …
science, and a co-director of the Center for Social and Biomedical Complexity, at Indiana …
Co-authorship networks in the digital library research community
… the backlinking node, and w j,i corresponds to the edge weight between node j and i. The …
j,i with 1 C ( j ) in PageRank, in which C(j) is defined as the number of links going out of page j…
j,i with 1 C ( j ) in PageRank, in which C(j) is defined as the number of links going out of page j…
Modeling public mood and emotion: Twitter sentiment and socio-economic phenomena
We perform a sentiment analysis of all tweets published on the microblogging platform Twitter
in the second half of 2008. We use a psychometric instrument to extract six mood states (…
in the second half of 2008. We use a psychometric instrument to extract six mood states (…
Clinical factors associated with treatment resistance in major depressive disorder: results from a European multicenter study
…, P Oswald, I Massat, U Bailer, J Bollen… - Journal of Clinical …, 2007 - psychiatrist.com
Objectives: Very few studies have investigated clinical features associated with treatment-resistant
depression (TRD) defined as failure of at least 2 consecutive antidepressant trials. …
depression (TRD) defined as failure of at least 2 consecutive antidepressant trials. …
[HTML][HTML] A principal component analysis of 39 scientific impact measures
Background The impact of scientific publications has traditionally been expressed in terms
of citation counts. However, scientific activity has moved online over the past decade. To …
of citation counts. However, scientific activity has moved online over the past decade. To …
Journal status
J Bollen, MA Rodriquez, H Van de Sompel - Scientometrics, 2006 - Springer
… Self-citations were included contrary to an earlier report in BOLLEN et al. (2006). Not
surprisingly, a sparse matrix resulted with 5709 journals having non-zero citation counts. …
surprisingly, a sparse matrix resulted with 5709 journals having non-zero citation counts. …