scholarly journals Modeling the spread of fake news on Twitter

PLoS ONE ◽  
2021 ◽  
Vol 16 (4) ◽  
pp. e0250419
Author(s):  
Taichi Murayama ◽  
Shoko Wakamiya ◽  
Eiji Aramaki ◽  
Ryota Kobayashi

Fake news can have a significant negative impact on society because of the growing use of mobile devices and the worldwide increase in Internet access. It is therefore essential to develop a simple mathematical model to understand the online dissemination of fake news. In this study, we propose a point process model of the spread of fake news on Twitter. The proposed model describes the spread of a fake news item as a two-stage process: initially, fake news spreads as a piece of ordinary news; then, when most users start recognizing the falsity of the news item, that itself spreads as another news story. We validate this model using two datasets of fake news items spread on Twitter. We show that the proposed model is superior to the current state-of-the-art methods in accurately predicting the evolution of the spread of a fake news item. Moreover, a text analysis suggests that our model appropriately infers the correction time, i.e., the moment when Twitter users start realizing the falsity of the news item. The proposed model contributes to understanding the dynamics of the spread of fake news on social media. Its ability to extract a compact representation of the spreading pattern could be useful in the detection and mitigation of fake news.

2020 ◽  
Vol 10 (2) ◽  
pp. 44-56
Author(s):  
Umar Farooq Gillani ◽  
Muhammad Ishfaq Khan ◽  
Manzar Waseem Ishaq ◽  
Kashif Aziz ◽  
Muhammad Nawas Akram

Despite the huge growth potential that has been predicted for purchase intention toward paid apps and the mobile game market, little is known about what motivates game players to make such purchases. The purpose of this article is to build a research model based on the satisfaction literature and studies of value theory to identify the antecedents of paid app purchase intention in the context of mobile games. The proposed model was empirically tested and uses data from 310 players of different games groups. Multiple regression, Process Macro, and moderation regression were used to measure the research model. The results tell that satisfaction to the mobile game has a significant influence on a player's intention to make paid app purchase. The perceived values of the game have a direct influence on the satisfaction of all players but appear to have relatively moderation impact of price have significant negative impact on the purchase intentions of players. Specifically, our study revealed a high price decrease the purchase intention of a satisfied player.


2021 ◽  
Vol 16 (1) ◽  
pp. 95-97
Author(s):  
Sarah Bartlett Schroeder

A Review of: Evanson, C., & Sponsel, J. (2019). From syndication to misinformation: How undergraduate students engage with and evaluate digital news. Communications in Information Literacy, 13(2), 228-250. https://doi.org/10.15760/comminfolit.2019.13.2.6 Abstract Objective – To determine how new undergraduate students access, share, and evaluate the credibility of digital news. Design – Asynchronous online survey and activity. Setting – A small private, liberal arts college in the southeastern United States of America. Subjects – Participants included 511 incoming first-year college students. Methods – Using the Moodle Learning Management System, incoming first-year students completed a mandatory questionnaire that included multiple choice, Likert scale, open-ended, and true/false questions related to news consumption. Two questions asked students to identify which news sources and social networking sites they have used recently, and the next two questions asked students to define fake news and rate the degree to which fake news impacts them personally and the degree to which it impacts society. The end of the survey presented students with screenshots of three news stories and asked them to reflect on how they would evaluate the claim in the story, their confidence level in the claim, and whether or not they would share this news item on social media. The three items chosen represent certain situations that commonly cause confusion for news consumers: (a) a heading that does not match the text of the article, (b) a syndicated news story, and (c) an impostor URL and fake news story. Researchers coded the student responses using both preset and emergent codes. Main Results – Eighty-two percent of students reported using at least one social media site to access political news in the previous seven days. Students reported believing that fake news is a worrying trend for society, with 86% labelling it either a “moderate” or “extreme” barrier to society’s ability to recognize accurate information. However, they expressed less concern about their own ability to navigate an information environment in which fake news is prevalent, with 51% agreeing that it has only somewhat of an effect on their own ability to effectively navigate digital information. Of the three news items presented to them, students expressed the least confidence (an average of 1.55/4) and least interest in sharing (12%) the first news item, in which the heading does not match the text. However, only 14% of respondents noted this mismatch. In evaluations of the second item, an AP news item on the Breitbart website, 35% of students noted the website on which the article was found, but fewer noted that the original source is the Associated Press. Student responses to the third article, a fake news item from a website masquerading as an NBC website, show that 37% of students believed the source to come from a legitimate NBC source. Only 7% of students recognized the unusual URL, and 24% of respondents indicated that they might share this news item on social media. Conclusion – The study finds that impostor URLs and syndicated news items might confuse students into misevaluating the information before them, and that librarians and other instructors should raise awareness of these tactics.


2021 ◽  
Vol 13 (6) ◽  
pp. 51-59
Author(s):  
Adel Angali ◽  
◽  
Musa Mojarad ◽  
Hassan Arfaeinia

Rumor is an important form of social interaction. However, spreading harmful rumors can have a significant negative impact on social welfare. Therefore, it is important to examine rumor models. Rumors are often defined as unconfirmed details or descriptions of public things, events, or issues that are made and promoted through various tools. In this paper, the Ignorant-Lurker-Spreader-Hibernator-Removal (ILSHR) rumor spreading model has been developed by combining the ILSR and SIHR epidemic models. In addition to the characteristics of the lurker group of ILSR, this model also considers the characteristics of the hibernator group of the SIHR model. Due to the complexity of the complex network structure, the state transition function for each node is defined based on their degree to make the proposed model more efficient. Numerical simulations have been performed to compare the ILSHR rumor spreading model with other similar models on the Sina Weibo dataset. The results show more effective ILSHR performance with 95.83% accuracy than CSRT and SIR-IM models.


2021 ◽  
Author(s):  
Sean Treacy ◽  
Shane O Donnell ◽  
Blanaid Gavin ◽  
Tamara Schloemer ◽  
Etain Quigley ◽  
...  

Background: The COVID-19 Pandemic had a significant negative impact on the mental health of healthcare workers. Evidence-based interventions that could be used to mitigate this impact are lacking in the literature. This review aims to evaluate psychological interventions used for employees following previous disasters and assess the transferability of these interventions to a healthcare setting during the COVID-19 pandemic. Methods: Intervention information from a previously published systematic review of the literature published up to 2015 was extracted, and an additional search of studies published from 2015-2020 was conducted. Studies were assessed for transferability using a checklist derived from the PIET-T process model. Results: Interventions from eighteen studies were assessed for transferability (including three studies identified in an updated literature search). Interventions established as most transferable included resilience training, meditation/mindfulness interventions, and cognitive behavioural therapy. Psychological debriefing was transferable but as it is contrary to current recommendations is not deemed appropriate for adoption. Implications: Several existing interventions have the potential to be utilised within the COVID-19 context/pandemic. More research needs to be undertaken in this area to assess these interventions upon transfer.


2020 ◽  
Author(s):  
Philip Boakye

The acceptance of electronic laboratory information system (LIS) is gradually increasing in developing countries. However, the issue of time effectiveness due to computerization is less clear as there is fewer accessible information. One of the key issues for laboratorians is their indecision with LISs’ would-be effect of time on their work. A polyclinic in Ghana was in the process of implementing electronic LIS. Several of the laboratorians did not have knowledge and skill in computing and there were disagreeing views on the time effectiveness of the LIS after implementation. The management of the polyclinic laboratory was concerned to assess time advantageousness of recording data when using the electronic LIS compared with paper-based LIS. <div><br></div><div>Five randomly selected laboratorians were provided two sheets of paper with tables to document the time they spent for both paper-based and electronic LIS. Data were collected for a total of 230 records,115 electronic LIS and 115 paper-based LIS. The t-test (mean-comparison test) was computed to compare the means of both electronic and paperbased LIS times. </div><div><br></div><div>There was a statistical significant difference in the time spent between electronic and paper-based LIS. The time spent between paper-based and electronic LIS was 0.41 minutes (95% CI 0.15 to 0.66) longer than in electronic LIS. </div><div><br></div><div>LIS can be adopted in polyclinics without having significant negative impact on time spent between electronic and paper-based LIS. More time–motion studies that include laboratorians are however necessary in order to get a more complete picture of time spent between electronic and paper-based LIS. </div>


Author(s):  
Ekaterina Maksimova ◽  
Ekaterina Maksimova ◽  
Vladimir Zhigulsky ◽  
Vladimir Zhigulsky ◽  
Vladimir Shuisky ◽  
...  

The macrophyte thicket ecosystems of higher aquatic vegetation in the Neva Bay (NB) and Eastern Gulf of Finland (EGoF) perform many important roles, including acting as the habitats, nesting sites and migration sites for aquatic and semi-aquatic birds, creating the specific conditions necessary for the spawning and growth of many species of fish, and taking part in the self-purification of the aquatic ecosystems. Many anthropogenic disturbances, hydraulic works in particular, have a significant negative impact on these macrophyte thicket ecosystems. In recent years, the active growth of a new type of macrophyte thicket has been observed in the NB. This is due to the aftereffects of the construction of the Saint Petersburg Flood Prevention Facility Complex (FPFC). It is quite likely that the total macrophyte thicket area in these waters is currently increasing. In the future, it will be necessary to assess the environmental impacts of the hydraulic works on the macrophyte thicket of the NB and EGoF, taking into account the background processes of the spatiotemporal dynamics of the reed beds in the waters in question. To do this, it will be necessary to carry out a comprehensive study of these ecosystems and identify patterns in their spatial and temporal dynamics. The program of the study has been developed and is currently being implemented by Eco-Express-Service, a St. Petersburg eco-design company.


2020 ◽  
Vol 26 (4) ◽  
pp. 397-406
Author(s):  
T. E. Chekanova

The presented study examines the problems of integration of the national banking systems of the member states of the Eurasian Economic Union (EAEU).Aim. The study aims to examine the major differences in various aspects of functioning of banking systems in the EAEU member states in terms of their impact on integration processes.Tasks. The author identifies the most prominent features of the banking systems of the EAEU states; reveals the depth of the existing differences through a comparative analysis of various indicators of national banking systems; outlines ways of overcoming integration problems associated with differences in the banking sectors of the Union states.Methods. This study is based on universal general scientific methods and elements of comparative, functional, and economic analysis within the framework of a systems approach. The author uses regulatory documents and banking reports of the EAEU states, statistical and analytical materials of the Eurasian Economic Commission (EEC), and data of Moody’s international rating agency.Results. The study identifies a number of aspects that contain the major differences in the functioning of banking systems in the EAEU member states; highlights the disproportions in the scale, level of development, financial stability, and risks of the banking spheres of the Union states; comparatively analyzes the proportion of banking and non-banking structures in the system and the share of the government and non-resident companies in the capital of banks; marks the difference in the pricing of banking services; determines differences in the existing approaches to banking regulation and the established standards; analyzes the major differences in the legislative acts of the central banks and governments of the EAEU member states and in the terms and definitions used. According to the results of the study, the major factors hindering the development of integration processes between the banking systems of the EAEU states are identified.Conclusions. The existing differences between the banking systems of the EAEU countries are diverse and multifaceted. The author states that the aspects addressed in this study have a significant negative impact on the further development of integration processes, describing the major directions and actions of the member states aimed at minimizing the exiting differences, which are required to facilitate the convergence of the states and the transition towards a common financial market.


Relay Journal ◽  
2019 ◽  
Author(s):  
Sam Morris

Teachers and advisors involved in the emotional business of language education feel frustrated from time to time, and if such emotions are not managed healthily, they may lead to negative outcomes such as stress and burnout. One important system for taking control of frustration is emotion regulation, the cognitive and behavioural strategies through which individuals manage their emotions. In this short article, I define frustration and discuss its negative impact on the language classroom. I then introduce a structured reflective journaling tool, built upon Gross’s Process model of emotion regulation (Gross, 2014, 2015) which may help teachers and advisors develop greater awareness and control over experiences of frustration.


2019 ◽  
pp. 105-107
Author(s):  
A. S. Busygin ◽  
А. V. Shumov

The paper considers a method for simulating the flight of a multistage rocket in Matlab using Simulink software for control and guidance. The model takes into account the anisotropy of the gravity of the Earth, changes in the pressure and density of the atmosphere, piecewise continuous change of the center of mass and the moment of inertia of the rocket during the flight. Also, the proposed model allows you to work out various targeting options using both onboard and ground‑based information tools, to load information from the ground‑based radar, with imitation of «non‑ideality» of incoming target designations as a result of changes in the accuracy of determining coordinates and speeds, as well as signal fluctuations. It is stipulated that the design is variable not only by the number of steps, but also by their types. The calculations are implemented in a matrix form, which allows parallel operations in each step of processing a multidimensional state vector of the simulated object.


Neurosurgery ◽  
2019 ◽  
Vol 86 (1) ◽  
pp. 132-138
Author(s):  
Christopher D Shank ◽  
Nicholas J Erickson ◽  
David W Miller ◽  
Brittany F Lindsey ◽  
Beverly C Walters

Abstract BACKGROUND Neurosciences intensive care units (NICUs) provide institutional centers for specialized care. Despite a demonstrable reduction in morbidity and mortality, NICUs may experience significant capacity strain with resulting supraoptimal utilization and diseconomies of scale. We present an implementation study in the recognition and management of capacity strain within a large NICU in the United States. Excessive resource demand in an NICU creates significant operational issues. OBJECTIVE To evaluate the efficacy of a Reserved Bed Pilot Program (RBPP), implemented to maximize economies of scale, to reduce transfer declines due to lack of capacity, and to increase transfer volume for the neurosciences service-line. METHODS Key performance indicators (KPIs) were created to evaluate RBPP efficacy with respect to primary (strategic) objectives. Operational KPIs were established to evaluate changes in operational throughput for the neurosciences and other service-lines. For each KPI, pilot-period data were compared to the previous fiscal year. RESULTS RBPP implementation resulted in a significant increase in accepted transfer volume to the neurosciences service-line (P = .02). Transfer declines due to capacity decreased significantly (P = .01). Unit utilization significantly improved across service-line units relative to theoretical optima (P &lt; .03). Care regionalization was achieved through a significant reduction in “off-service” patient placement (P = .01). Negative externalities were minimized, with no significant negative impact in the operational KPIs of other evaluated service-lines (P = .11). CONCLUSION Capacity strain is a significant issue for hospital units. Reducing capacity strain can increase unit efficiency, improve resource utilization, and augment service-line throughput. RBPP implementation resulted in a significant improvement in service-line operations, regional access to care, and resource efficiency, with minimal externalities at the institutional level.


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