scholarly journals A hierarchical network-oriented analysis of user participation in misinformation spread on WhatsApp

2022 ◽  
Vol 59 (1) ◽  
pp. 102757
Author(s):  
Gabriel Peres Nobre ◽  
Carlos H.G. Ferreira ◽  
Jussara M. Almeida
2020 ◽  
Author(s):  
Alex Akinbi ◽  
Ehizojie Ojie

BACKGROUND Technology using digital contact tracing apps has the potential to slow the spread of COVID-19 outbreaks by recording proximity events between individuals and alerting people who have been exposed. However, there are concerns about the abuse of user privacy rights as such apps can be repurposed to collect private user data by service providers and governments who like to gather their citizens’ private data. OBJECTIVE The objective of our study was to conduct a preliminary analysis of 34 COVID-19 trackers Android apps used in 29 individual countries to track COVID-19 symptoms, cases, and provide public health information. METHODS We identified each app’s AndroidManifest.xml resource file and examined the dangerous permissions requested by each app. RESULTS The results in this study show 70.5% of the apps request access to user location data, 47% request access to phone activities including the phone number, cellular network information, and the status of any ongoing calls. 44% of the apps request access to read from external memory storage and 2.9% request permission to download files without notification. 17.6% of the apps initiate a phone call without giving the user option to confirm the call. CONCLUSIONS The contributions of this study include a description of these dangerous permissions requested by each app and its effects on user privacy. We discuss principles that must be adopted in the development of future tracking and contact tracing apps to preserve the privacy of users and show transparency which in turn will encourage user participation.


2020 ◽  
Vol 961 (7) ◽  
pp. 2-7
Author(s):  
A.V. Zubov ◽  
N.N. Eliseeva

The authors describe a software suite for determining tilt degrees of tower-type structures according to ground laser scanning indication. Defining the tilt of the pipe is carried out with a set of measured data through approximating the sections by circumferences. They are constructed using one of the simplest search engine optimization methods (evolutionary algorithm). Automatic filtering the scan of the current section from distorting data is performed by the method of assessing the quality of models constructed with that of least squares. The software was designed using Visual Basic for Applications. It contains several blocks (subprograms), with each of them performing a specific task. The developed complex enables obtaining operational data on the current state of the object with minimal user participation in the calculation process. The software suite is the result of practical implementing theoretical developments on the possibilities of using search methods at solving optimization problems in geodetic practice.


Nanomaterials ◽  
2021 ◽  
Vol 11 (3) ◽  
pp. 747
Author(s):  
Mahashanon Arumugam ◽  
Chee Keong Goh ◽  
Zulkarnain Zainal ◽  
Sugeng Triwahyono ◽  
Adam F. Lee ◽  
...  

Solid acid catalyzed cracking of waste oil-derived fatty acids is an attractive route to hydrocarbon fuels. HZSM-5 is an effective acid catalyst for fatty acid cracking; however, its microporous nature is susceptible to rapid deactivation by coking. We report the synthesis and application of hierarchical HZSM-5 (h-HZSM-5) in which silanization of pre-crystallized zeolite seeds is employed to introduce mesoporosity during the aggregation of growing crystallites. The resulting h-HZSM-5 comprises a disordered array of fused 10–20 nm crystallites and mesopores with a mean diameter of 13 nm, which maintain the high surface area and acidity of a conventional HZSM-5. Mesopores increase the yield of diesel range hydrocarbons obtained from oleic acid deoxygenation from ~20% to 65%, attributed to improved acid site accessibility within the hierarchical network.


1999 ◽  
Vol 20 (1) ◽  
pp. 4 ◽  
Author(s):  
Monica Divitini ◽  
Babak A. Farshchian ◽  
Tuomo Tuikka

2020 ◽  
Vol 30 (Supplement_5) ◽  
Author(s):  
◽  

Abstract Patient information material (PIM) is omnipresent in healthcare. It is used to convey information or to familiarize potential end-users to offers of support. PIM recaps or elaborates on relevant information and offers recommendation for action. However, the quality of available PIM varies. When the formal and content-related quality of PIM is suboptimal, it not only fails to be effective but can also lead to uncertainty, misunderstandings, resistance or ignorance (e.g. of a support offer). Highly complex information requires much attention on the quality of the PIM, especially with respect to end-users (e.g. vulnerable groups). Excellent communication through the use of PIM is thus essential within complex interventions. Checklists, such as 'Discern' or 'PEMAT', as well as criteria catalogues or evidence-based patient information standards, may assist in the development, quality assessment and optimization of PIM. The inclusion of the end-users is recommended but for various reasons does not often take place. The innovative “integrated, cross-sectional Psycho-Oncology” (isPO) programme, offers needs-driven, professional support to all adult, newly diagnosed cancer patients early in their sickness trajectory. IsPO was developed in 2018. It was implemented and a formative evaluated in 2019. When developing this programme, different PIM were created top-down by the programme designers. During implementation, it became evident that these PIM materials required further improvement. A testing and optimization process started using the participatory health research (PHR) approach and was completed in a five-month period. A PIM-optimisation team was founded, which included the project partners involved in the network support, self-help organisations and the external evaluation institute. A practical instrument (PIM-checklist) for optimising the isPO-PIM was designed, piloted and used for testing by end-users, isPO service providers, and experts. Based on the recommendations in the checklist, the material was revised accordingly. Additionally, the PIM was completed with the design of two new components. Four optimisation rounds were conducted. The optimized PIM was tested on its comprehensibility (for end-users) and its usability (for service providers). During the presentations, the audience is invited to comment on critical questions that may appear during optimization (e.g. timing). Afterwards, there will be a skill building part with a focus on collaborative learning (45 minutes). First, we will focus on the requirements for a practical instrument that is handy for end-users, service providers and experts (mind mapping exercise). Finally, participants will be able to explore the following topics “World Café” discussion: (1) how to plan, conduct and communicate the development of optimization of PIM in a CI program, (2) what needs to be considered for the optimization (e.g. team composition, resources), and (3) how to continuously achieve end-userś participation. Key messages Excellent PIM are essential for a complex interventiońs success in practice and must include information and foster actionability. the iterative PIM design processes benefits from high user participation.


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