FNDNet – A deep convolutional neural network for fake news detection

With the increasing popularity of social media and web-based forums, the distribution of fake news has become a major threat to various sectors and agencies. This has abated trust in the media, leaving readers in a state of perplexity. There exists an enormous assemblage of research on the theme of Artificial Intelligence (AI) strategies for fake news detection. In the past, much of the focus has been given on classifying online reviews and freely accessible online social networking-based posts. In this work, we propose a deep convolutional neural network (FNDNet) for fake news detection. Instead of relying on hand-crafted features, our model (FNDNet) is designed to automatically learn the discriminatory features for fake news classification through multiple hidden layers built in the deep neural network. We create a deep Convolutional Neural Network (CNN) to extract several features at each layer. We compare the performance of the proposed approach with several baseline models. Benchmarked datasets were used to train and test the model, and the proposed model achieved state-of-the-art results with an accuracy of 98.36% on the test data. Various performance evaluation parameters such as Wilcoxon, false positive, true negative, precision, recall, F1, and accuracy, etc. were used to validate the results. These results demonstrate significant improvements in the area of fake news detection as compared to existing state-of-the-art results and affirm the potential of our approach for classifying fake news on social media. This research will assist researchers in broadening the understanding of the applicability of CNN-based deep models for fake news detection.     

民警社交媒体自我呈现对工作满意度的影响—积极情绪的中介作用

为探讨民警在社交媒体中自我呈现策略与工作满意度的关系,以及积极情绪的中介作用,采用积极情感消极情感量表、工作满意度量表以及自我呈现问卷对242名民警进行问卷调查,结果表明：（1）民警在社交媒体中的积极自我呈现和真实自我呈现分别与积极情绪、工作满意度两两之间显著正相关,积极自我呈现与积极情绪、工作满意度的相关性更高;（2）民警在社交媒体中的积极自我呈现和真实自我呈现对工作满意度有正向预测作用,并通过积极情绪的中介作用对工作满意度产生影响。     

工作场所社交媒体使用对员工工作绩效的影响：基于人际关系视角

基于社会交换理论和分心冲突理论,本研究探讨了社交媒体使用对员工工作绩效影响的作用机制。通过“领导者-下属”配对的问卷调查法对147名员工进行调查,采用Bootstrap检验对模型中的多重中介效应进行检验。结果发现：（1）社交相关的社交媒体使用与员工工作绩效各维度间显著正相关;（2）社交相关的社交媒体使用对工作绩效不同维度的影响存在显著差异,通过增加人际信任对工作奉献和任务绩效产生影响,通过缓解关系冲突对人际促进和任务绩效产生影响。     

The Internet is a scary place: How does evidence source and examinee race or ethnicity influence determinations of threat?

Violent rhetoric online is becoming increasingly relevant to the practice of forensic mental health assessment as examinee's virtual lives may transform into real-world acts of violence. With the rise of a diverse subculture of violent online communities, the aim of the present study was to inform how concerns with online sources of collateral data and racial/ethnic biases may influence determinations of violence potential. Using an experimental design, jury-eligible participants (N = 278) and forensic mental health experts (N = 78) were presented with mock Twitter (now referred to as X) posts that varied by data source (i.e., how information was accessed) and the examinee's race/ethnicity. Results showed no differences in participants' ratings of data credibility, how much weight they would place on the posts in a threat assessment, or how likely the examinee was to act violently against his intended target. Implications regarding the interpretation of social media evidence, relevant limitations, and future research are discussed.     

Truthfulness,Beneficence, and Vulnerability as Key Concepts in Communication Ethics

This article presents the major stages of the approaches to the ethics of communication and the respective ethical principle of each one. The first stage, centred on the principle of truthfulness, was born at the beginning of the 20th century, at the same time as the first great development of the press and journalism. The second stage, which began at the end of the 20th century, centred on the principle of beneficence and developed from the growing influence of the mass media on all fields and aspects of social life. There is also the need for a further principle for communication ethics: the principle of vulnerability: to give voice to those affected by a situation, especially to those in a situation of vulnerability. The article then considers whether the huge impact of the Internet and social media at the beginning of the 21st century implies a new stage in the ethics of communication or rather the need to extend the scope and effectiveness of existing ethical principles and norms. The article tends toward the second option, insisting on the role of self-regulation and media literacy in tackling the current challenges in media and social media communications.     

Prolonged exposure in patients with chronic PTSD: predictors of treatment outcome and dropout

The present study investigated predictors of treatment outcome and dropout in two samples of PTSD-patients with mixed traumas treated using prolonged imaginal exposure. Possible predictors were analysed in both samples separately, in order to replicate in one sample findings found in the other. The only stable finding across the two groups was that patients who showed more PTSD-symptoms at pre-treatment, showed more PTSD-symptoms at post-treatment and follow-up. Indications were found that benzodiazepine use was related to both treatment outcome and dropout, and alcohol use to dropout. Demographic variables, depression and general anxiety, personality, trauma characteristics, feelings of anger, guilt, and shame and nonspecific variables regarding therapy were not related to either treatment outcome or dropout, disconfirming generally held beliefs about these factors as contra-indications for exposure therapy. It is concluded that it is difficult to use pre-treatment variables as a powerful and reliable tool for predicting treatment outcome or dropout. Clinically seen, it is therefore argued that exclusion of PTSD-patients from prolonged exposure treatment on the basis of pre-treatment characteristics is not justified.     

Moral imperatives,professional interventions and resilience,and educational action in chaotic situations: the souls of children amidst the horror of war

Drawing from the research on children of war in Bogota, Beirut and Bosnia, this paper serves as a framework for dialogue about the criminalization of children by armed conflict and other forms of violence. Furthermore, it addresses the aching question of how best to care for these children so that they have every chance to become illuminated and not carbonized (Restrepo, 1999 Restrepo, L. 1999. La novia oscura [The dark bride], New York: HarperCollins.  [Google Scholar], p. 209) by the tragic circumstances of their environments. The author posits that educators everywhere bear a moral imperative to provide opportunities for children to reclaim hope, reintegrate socially, learn well, reflect deeply, and act justly. Specifically, this essay reflects on varied approaches aimed at fostering resilience, as well as cognitive and moral growth and development in children who are witness and/or victims of social, political, and violent struggles.     

At Both Ends of the Gun: Testing the Relationship Between Community Violence Exposure and Youth Violent Behavior

Much psychological inquiry has focused on understanding the contribution that exposure to urban violence makes to violent behavior among youth. However, other ways in which these variables may be related have been largely overlooked. This study compared four alternative social–ecological models of the link between community violence exposure and violent behavior to determine the degree to which (1) community violence exposure contributes to violent behavior, (2) violent behavior contributes to community violence exposure, (3) both are consequences of common antecedents, and (4) both are manifestations of the same higher order construct. Two hundred and seventy-seven adolescent offenders were interviewed about family, neighborhood, cognitive, and peer characteristics, in addition to violent behavior and community violence exposure. Results suggest that a plausible way to understand the association between community violence exposure and youth violent behavior is to consider both as representations of a general involvement in violence.     

Changing systems by changing individuals: the incubation approach to systems change

This article describes and evaluates the implementation of an innovative approach to systems change, the incubation approach, which was developed on a systems change project designed to increase the capacity of multiple systems (e.g., law enforcement, child protection, domestic violence, mental health, early education) to respond to children’s exposure to violence. The incubation approach encourages change agents to collaborate with project staff to gently nurture, or “incubate,” feasible and warranted change in target systems. Project staff gain concrete commitment from motivated and accessible change agents and collaborate with those agents to implement change actions. This approach works well with committed, executive-level change agents in target systems, with stable systems that have low turnover and well-integrated subsystems, and when seed funds are provided to key organizations.