Key User Research Articles

Anchored User Selection for Traffic Offloading Optimization in D2D-Aided Mobile-Edge Computing

Recently, integrated with the advanced communication technologies (e.g., 5G) and artificial intelligence (AI), mobile-edge intelligence (MEI) is regarded as the promising method to deal with the emerging challenges. Specifically, Device-to-Device (D2D) communications have been put forward to reduce the traffic pressure while extending cellular network capacity. However, the stability of the social network is important for the design of efficient and reliable traffic offloading strategy, which is often absent from the related work. Besides, most existing studies merely model the relation between a node pair as a binary or continuous value, neglecting the rich information between users. Moreover, many traditional models are conducted based on small-scale data sets or online Internet services, severely confining their applications in the D2D scenario. Thus, it is necessary to understand the network structure and select the key users to address the aforementioned challenges. In this article, we first propose a network representation model, named MPPT, to regard the multidimensional relations as a probability in a third-order (3-D) tensor space. Then, a mobile D2D social community is derived by integrating an edge base station (BS) and the nearby D2D users, and develop an anchored user selection algorithm to maintain the stability of multiple D2D social communities by choosing and retaining critical users adaptively under the limited network resources. Finally, we devise a probability-based onion layers anchored <inline-formula xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink"> <tex-math notation="LaTeX">$(k,r)$ </tex-math></inline-formula> -core (P-OLAK) algorithm to identify the anchor users. The large-scale data sets-based experimental results show the superiorities of the proposed methods.

Evaluation of Usability and Satisfaction of Two Online Tools to Guide Return to Work for Cancer Survivors on the Cancer and Work Website.

Prompt services and work-focused support systems are needed to aid cancer survivors returning to work or finding work. Purpose This knowledge translation and implementation project focused on the knowledge users' experience and need for refinement of three work-focused tools to support return to work and maintain work following cancer through their participation in a hands-on workshop. The tools assessed for their utility are a Job Analysis Tool (JAT), a Return to Work (RTW) tool, and a bilingual Canadian website on Cancer and Work. Methods Four workshops took place in three Canadian cities. Participants included cancer survivors, healthcare professionals, and employer representatives. Following an overview of the website and tools, workshop participants (N = 28) completed qualitative and quantitative satisfaction and usability questionnaires using the System Usability Scale and open-ended questions. Qualitative data was analyzed using content analyses from the think-aloud data and from the four open-ended questions collected during the users' use of the tools and website. Results Overall, most study participants reported high satisfaction with the JAT and RTW tools, the Cancer and work website and the workshop. Good usability scores were reported for the RTW planner (73.65 ± 12.61) and the website (74.83 ± 12.36), and only acceptable usability scores for the JAT (68.53 ± 11.90). Conclusion Overall, the study documented the value of the tools and the website to support the RTW process as assessed by several key knowledge user groups. The JAT is considered a helpful procedure to identify job demands in order to guide job accommodations. Given participants' responses that the tool is useful, the next steps are to implement the recommendations for improvement and knowledge dissemination to increase its uptake and the use of job analysis overall.

Development of the COVID-19 Real-Time Information System for Preparedness and Epidemic Response (CRISPER), Australia.

Accurate and current information has been highlighted across the globe as a critical requirement for the COVID-19 pandemic response. To address this need, many interactive dashboards providing a range of different information about COVID-19 have been developed. A similar tool in Australia containing current information about COVID-19 could assist general practitioners and public health responders in their pandemic response efforts. The COVID-19 Real-time Information System for Preparedness and Epidemic Response (CRISPER) has been developed to provide accurate and spatially explicit real-time information for COVID-19 cases, deaths, testing and contact tracing locations in Australia. Developed based on feedback from key users and stakeholders, the system comprises three main components: (1) a data engine; (2) data visualization and interactive mapping tools; and (3) an automated alert system. This system provides integrated data from multiple sources in one platform which optimizes information sharing with public health responders, primary health care practitioners and the general public.

EUNADICS-AV early warning system dedicated to supporting aviation in the case of a crisis from natural airborne hazards and radionuclide clouds

Abstract. The purpose of the EUNADICS-AV (European Natural Airborne Disaster Information and Coordination System for Aviation) prototype early warning system (EWS) is to develop the combined use of harmonised data products from satellite, ground-based and in situ instruments to produce alerts of airborne hazards (volcanic, dust, smoke and radionuclide clouds), satisfying the requirement of aviation air traffic management (ATM) stakeholders (https://cordis.europa.eu/project/id/723986, last access: 5 November 2021). The alert products developed by the EUNADICS-AV EWS, i.e. near-real-time (NRT) observations, email notifications and netCDF (Network Common Data Form) alert data products (called NCAP files), have shown significant interest in using selective detection of natural airborne hazards from polar-orbiting satellites. The combination of several sensors inside a single global system demonstrates the advantage of using a triggered approach to obtain selective detection from observations, which cannot initially discriminate the different aerosol types. Satellite products from hyperspectral ultraviolet–visible (UV–vis) and infrared (IR) sensors (e.g. TROPOMI – TROPOspheric Monitoring Instrument – and IASI – Infrared Atmospheric Sounding Interferometer) and a broadband geostationary imager (Spinning Enhanced Visible and InfraRed Imager; SEVIRI) and retrievals from ground-based networks (e.g. EARLINET – European Aerosol Research Lidar Network, E-PROFILE and the regional network from volcano observatories) are combined by our system to create tailored alert products (e.g. selective ash detection, SO2 column and plume height, dust cloud, and smoke from wildfires). A total of 23 different alert products are implemented, using 1 geostationary and 13 polar-orbiting satellite platforms, 3 external existing service, and 2 EU and 2 regional ground-based networks. This allows for the identification and the tracking of extreme events. The EUNADICS-AV EWS has also shown the need to implement a future relay of radiological data (gamma dose rate and radionuclides concentrations in ground-level air) in the case of a nuclear accident. This highlights the interest of operating early warnings with the use of a homogenised dataset. For the four types of airborne hazard, the EUNADICS-AV EWS has demonstrated its capability to provide NRT alert data products to trigger data assimilation and dispersion modelling providing forecasts and inverse modelling for source term estimate. Not all of our alert data products (NCAP files) are publicly disseminated. Access to our alert products is currently restricted to key users (i.e. Volcanic Ash Advisory Centres, national meteorological services, the World Meteorological Organization, governments, volcano observatories and research collaborators), as these are considered pre-decisional products. On the other hand, thanks to the EUNADICS-AV–SACS (Support to Aviation Control Service) web interface (https://sacs.aeronomie.be, last access: 5 November 2021), the main part of the satellite observations used by the EUNADICS-AV EWS is shown in NRT, with public email notification of volcanic emission and delivery of tailored images and NCAP files. All of the ATM stakeholders (e.g. pilots, airlines and passengers) can access these alert products through this free channel.

A secure cross-domain authentication scheme with perfect forward security and complete anonymity in fog computing

Nowadays, fog computing has become an emerging hot-topic for possessing the same advantages as cloud computing and the lower latency. Nevertheless, there are still many issues in fog computing that worth studying, the most importantly of which are key agreement and user authentication. In order to achieve secure communication among different entities, designing a secure key agreement and user authentication scheme becomes an urgent issue. Although many schemes have been investigated the key agreement and user authentication for cloud computing, these schemes cannot be directly applied to the fog computing due to efficiency and cost. To tackle this problem, we propose a secure and efficient key agreement and user authentication scheme for fog computing. Our scheme can establish secure sessions among different entities, and users can achieve cross-domain access to other fog server. Most importantly, Our scheme satisfies the perfect forward security and the complete anonymity. We prove that our scheme is secure in the random oracle model, and achieve formal security verification through the AVISPA tool. Finally, the performance analysis demonstrates that our scheme tends to be more efficient in comparison with similar schemes.

Multiparameter Continuous Physiological Monitoring Technologies in Neonates Among Health Care Providers and Caregivers at a Private Tertiary Hospital in Nairobi, Kenya: Feasibility, Usability, and Acceptability Study.

BackgroundContinuous physiological monitoring technologies are important for strengthening hospital care for neonates, particularly in resource-constrained settings, and understanding user perspectives is critical for informing medical technology design, development, and optimization.ObjectiveThis study aims to assess the feasibility, usability, and acceptability of 2 noninvasive, multiparameter, continuous physiological monitoring technologies for use in neonates in an African health care setting.MethodsWe assessed 2 investigational technologies from EarlySense and Sibel, compared with the reference Masimo Rad-97 technology through in-depth interviews and direct observations. A purposive sample of health care administrators, health care providers, and caregivers at Aga Khan University Hospital, a tertiary, private hospital in Nairobi, Kenya, were included. Data were analyzed using a thematic approach in NVivo 12 software.ResultsBetween July and August 2020, we interviewed 12 health care providers, 5 health care administrators, and 10 caregivers and observed the monitoring of 12 neonates. Staffing and maintenance of training in neonatal units are important feasibility considerations, and simple training requirements support the feasibility of the investigational technologies. Key usability characteristics included ease of use, wireless features, and reduced number of attachments connecting the neonate to the monitoring technology, which health care providers considered to increase the efficiency of care. The main factors supporting acceptability included caregiver-highlighted perceptions of neonate comfort and health care respondent technology familiarity. Concerns about the side effects of wireless connections, electromagnetic fields, and mistrust of unfamiliar technologies have emerged as possible acceptability barriers to investigational technologies.ConclusionsOverall, respondents considered the investigational technologies feasible, usable, and acceptable for the care of neonates at this health care facility. Our findings highlight the potential of different multiparameter continuous physiological monitoring technologies for use in different neonatal care settings. Simple and user-friendly technologies may help to bridge gaps in current care where there are many neonates; however, challenges in maintaining training and ensuring feasibility within resource-constrained health care settings warrant further research.International Registered Report Identifier (IRRID)RR2-10.1136/bmjopen-2019-035184

Scottish Burden of Disease (SBOD) study: a population health surveillance system for meaningful action

Abstract In 2012, planning began to launch the Scottish Burden of Disease (SBOD) study. The aim was to create a population health surveillance system to assess the impact of over 100 causes of disease and injury, and risks, measured by disability-adjusted life years (DALYs). The study has become a mainstay over the last five years as a tool to aid strategic and proportionate decision-making. In 2017, its scope expanded to highlight the extent of inequalities in DALYs by socioeconomic status. Additionally, it now provides comprehensive estimates for 14 regional Health Boards, which are responsible for protecting and improving the health of their local populations. It also provides estimates for 32 local government regions, which provide services related to the broader determinants of health, such as: education, social care and housing. To help turn findings from the SBOD study into action, push, pull and integrated efforts are used. Push efforts involve working together with publishing and communications leads to share key findings. These are commonly in the form of plain English and academic reports, summary briefings, social media messages and infographics. Key messages are also shared through television, radio and newsprint. Pull efforts have recently been improved to house estimates within interactive R Shiny dashboards, which contain user-friendly charts and easy to download data. Integrated approaches involve working with relevant national and local stakeholders, to help shape national and local priority setting. Findings from the study are being used by national and local government and health institutions. Third sector organisations are also key users of SBOD findings, particularly for health conditions that generate high-levels of ill-health, rather than mortality. In 2021, the study will publish an update, and increase capacity on integrated efforts to further embed the SBOD in national and local strategic planning.

The relationship between unmet need for home and community-based services and health and community living outcomes

BackgroundFew studies have examined user-reported perspectives about the quality and sufficiency of home and community-based services (HCBS) and their relationship to key health and community living outcomes. ObjectiveTo examine the association between unmet need for HCBS and health and community living outcomes in a multi-state, multi-program sample of Medicaid HCBS users. MethodsWe used data from the 2017–2018 National Core Indicators-Aging and Disability (NCI-AD) survey, collected among older adults and adults with physical disabilities who were receiving Medicaid HCBS across 13 states (N = 10,263). We conducted descriptive analysis on the demographic, functional, and health characteristics of the sample, and examined the prevalence of unmet need for HCBS across five domains: 1) assistance with daily activities, 2) assistive technology, 3) home modifications, 4) transportation, and 5) sufficiency of services for meeting user needs and goals. We used logistic regressions to estimate adjusted odds ratios for the association between unmet need for HCBS and health care utilization (ED visits, hospital/rehab stays, preventative care) and community living outcomes (active in the community, interacting with family/friends, satisfaction, control). ResultsAcross the five domains, prevalence of unmet need ranged from 21% (unmet need for assistance with self-care or other daily activities) to 54% (unmet need for assistive technology). Individuals who experienced unmet need had consistently worse health and community living outcomes than those who reported no unmet need, after adjusting for key user demographic, functional, and social characteristics (p < 0.05). ConclusionsUnmet need for HCBS is consistently and significantly associated with poor health and community living outcomes among Medicaid users.

Perception and Experience of Transcultural Care of Stakeholders and Health Service Users with a Migrant Background: A Qualitative Study.

Introduction: While European health policies do frequently take into consideration the ideas and experiences of their users, the voices of minority and marginalized communities are not often heard. European healthcare services must address this issue as the number of healthcare users with an MM background increases. Aim: To explore the perspectives of key stakeholders and healthcare users with an MM background on transcultural care in four European countries. Design: Qualitative phenomenological study. Methods: Semi-structured, individual interviews were conducted with stakeholders and MM users. Interviews were translated and transcribed verbatim and were carried out from February to May 2021. Descriptive statistics was used to describe the characteristics of the sample; qualitative data were analyzed thematically following Braun and Clarke’s phases, resulting in 6 themes and 18 subthemes. Results: For stakeholders and MM users with long-established residence in their respective countries, cultural differences involve different family and community norms, religious beliefs, lifestyles, and habits. These components are perceived as in tension with healthcare norms and values, and they mediate in two key and related aspects of the relationship between MM users and healthcare providers: accessibility and communication. Conclusions: Communication and access to healthcare are key to MM health service users, and they are the most frequent sources of misunderstanding and conflict between them and healthcare professionals. Impact: It is important to extend the investigation of cultural issues in healthcare to stakeholders and MM users. There is no doubt that healthcare professionals should be trained in cultural competence; however, cultural competence training is not the only area for improvement. There should be a change in paradigm in healthcare services across Europe: from individual to organizational integration of culture and diversity.

Multistakeholder knowledge levels and perspectives of human papillomavirus and its vaccination: An exploratory qualitative study.

This qualitative study was an integral part in the development of a multidisciplinary team-led school-based human papillomavirus vaccination health-promotion programme (MDL-SHPVP) aiming to increase HPV vaccine uptake in Hong Kong. Study findings will inform the design of the MDL-SHPVP by drawing on interview data regarding the expectations and needs of key stakeholders and potential programme users. Eight mother-daughter dyads, four secondary school teachers, two school principals, three social workers and one school nurse were interviewed. All interviews were audio-recorded and transcribed verbatim for thematic analysis. Most participants had misconceptions about HPV and the vaccine. Alhough there was no immediate perceived need for the vaccination, most participants had favourable attitudes towards HPV inoculation and vaccines in general. Factors affecting vaccine uptake included perceptions about risk of infection, vaccine availability, and cost. Participants were largely open to suggested MDL-SHPVP components (videos, digital game, and group discussions). Findings have highlighted knowledge gaps among potential users and key stakeholders and will be used to inform the design of the MDL-SHPVP to ensure that their needs and expectations are addressed. Study findings may also aid future HPV vaccine promotion efforts and boost HPV vaccine uptake among youth in the city.

A dermatology E-learning programme is perceived as a valuable learning tool in postgraduate general practice training.

ObjectivesThis study aims to explore GP residents' knowledge retention and residents' and clinical teachers' perception on the learning value of a dermatology E-learning programme. MethodsThe study used a mixed-method design with a convergent parallel collection of data. GP residents (n=21) were selected through purposive sampling and were randomized to an E-learning group (n=12) or a traditional teaching methods group (n=9). The pre-and post-intervention knowledge tests of the E-learning group were compared using paired-samples t-tests. Post-knowledge tests scores of both groups were compared using independent t-tests. Cronbach's coefficient α was used to calculate the internal consistency of the questions used in the knowledge tests. Individual semi-structured interviews and clinical teachers (n=16) were conducted and analyzed using King's template analysis. ResultsThe E-learning group showed a significant increase in mean knowledge test scores from 58.92% (SD=9.55%) to 64.92% (SD=13.65%) (t(11)=2.258, p=0.045, Cohen’s d=0.51). The pre-knowledge test consisted of 46 items (Alpha=0.78), and the post-knowledge tests consisted of 45 items (Alpha=0.90). Interview data showed that the E-learning programme aided GP trainees' learning process and favoured a mixed-method teaching design, in which E-learning is used in parallel to the traditional teaching methods. ConclusionsA dermatology E-learning programme appeared an effective strategy in resident's knowledge acquiring. The key users' perceptions, both residents and clinical teachers, indicated that E-learning was feasible and helpful for learning processes. Further research is required to evaluate the implementation of E-learning programmes in parallel to regular teaching programs.

Digital platformization of strategic management of Ukrainian economy

The aim of the study is to substantiate the role and capabilities of the national digital strategy platform in the institutionalization of the strategic management process in Ukraine. The organizational and structural logic of the study is based on the ascent from the abstract (digital economy as an uncontested target image of the future and strategic management as a universal tool for organizing economic activity) to the concrete (the state of digitalization and strategic management in Ukraine), as well as on the dialectical triad (thesis, antithesis, synthesis). As a thesis, a positive analysis is given and the historical conditionality (determinism) of the digitalization of the economy is substantiated. It shows its local efficiency at the entrepreneurial level, as well as the fundamental role of goal-setting and strategizing from the standpoint of economic theory. At the stage of antithesis, a number of contradictions were revealed: (1) between the historically conditioned nature of digital platformization within the framework of economic laws and the modern basis of digitalization in the form of credit expansion; (2) between the effectiveness of digitalization at the micro level and the absence of its positive impact on social and economic development at the national level; (3) between the weak, but growing, platform economy of Ukraine and the dominance of vertical integration of national business in traditional spheres, which lead to the existence of orders of limited access and extractive institutions; (4) between the digitalization of the “public sector”, on the one hand, and the business and consumer (household) sectors, on the other; (5) between a theoretically grounded model of the strategizing process and its current position in Ukraine; (6) between a higher level of digitalization of the control object and the predominantly pre-digital level of the control subject. At the stage of synthesis, the potential of partial removal of these contradictions by improving the process of strategizing the development of the Ukrainian economy and its institutionalization using the national digital platform of strategizing is justified. The requirements for the architecture of the national digital strategy platform are substantiated, its blocks, key users and their roles are determined.

Choice of pre-processing pipeline influences clustering quality of scRNA-seq datasets

BackgroundSingle-cell RNA sequencing (scRNA-seq) has quickly become one of the most dominant techniques in modern transcriptome assessment. In particular, 10X Genomics’ Chromium system, with its high throughput approach, turn key and thorough user guide made this cutting-edge technique accessible to many laboratories using diverse animal models. However, standard pre-processing, including the alignment and cell filtering pipelines might not be ideal for every organism or tissue. Here we applied an alternative strategy, based on the pseudoaligner kallisto, on twenty-two publicly available single cell sequencing datasets from a wide range of tissues of eight organisms and compared the results with the standard 10X Genomics’ Cell Ranger pipeline.ResultsIn most of the tested samples, kallisto produced higher sequencing read alignment rates and total gene detection rates in comparison to Cell Ranger. Although datasets processed with Cell Ranger had higher cell counts, outside of human and mouse datasets, these additional cells were routinely of low quality, containing low gene detection rates. Thorough downstream analysis of one kallisto processed dataset, obtained from the zebrafish pineal gland, revealed clearer clustering, allowing the identification of an additional photoreceptor cell type that previously went undetected. The finding of the new cluster suggests that the photoreceptive pineal gland is essentially a bi-chromatic tissue containing both green and red cone-like photoreceptors and implies that the alignment and pre-processing pipeline can affect the discovery of biologically-relevant cell types.ConclusionWhile Cell Ranger favors higher cell numbers, using kallisto results in datasets with higher median gene detection per cell. We could demonstrate that cell type identification was not hampered by the lower cell count, but in fact improved as a result of the high gene detection rate and the more stringent filtering. Depending on the acquired dataset, it can be beneficial to favor high quality cells and accept a lower cell count, leading to an improved classification of cell types.

Translating knowledge in new entrepreneurial ventures: the role of business plan development

PurposeThis paper aims to analyse the role of business plan development as a knowledge translation tool, especially for the creation of start-ups. In a complex knowledge ecosystem populated by multiple diverse and autonomous actors (such as potential entrepreneurs, local companies, local public entities and business consultants) bonded together by a joint search for valuable knowledge, business plan development can work as a powerful enabler for the translation of knowledge.Design/methodology/approachThe study uses a qualitative multi-case study approach by examining the results of a public programme devoted to the creation of new entrepreneurial ventures. The authors analysed 418 complete business plans and followed up with all the participants with an interview. In total, 40 cases were investigated more in detail.FindingsResults show how business plan development can function as a bridge between academic, theoretical and general knowledge on start-up creation on the one hand and practical contextualised activities of potential entrepreneurs on the other.Practical implicationsThe process of knowledge translation is crucial to ensure that relevant knowledge coming from both the inside (the entrepreneur) and outside (the stakeholders) of the organisation is effectively applied. To facilitate the translation process, key knowledge users should be supported in contextualising and making sense of the research knowledge. Initiatives carried out by local entities and other actors, gathering several stakeholders to develop business plans, can become valuable opportunities to facilitate the translation process for start-up development.Originality/valueThe paper contributes to knowledge management and knowledge translation literature by demonstrating the role of business plan development as an effective knowledge translation enabler. It also adds to the understanding of innovation management and entrepreneurial education by proving the relevance of the translation of knowledge for the creation of new business ventures.

Evaluation and Refinement of a Bank of SMS Text Messages to Promote Behavior Change Adherence Following a Diabetes Prevention Program: Survey Study.

BackgroundSMS text messaging is a low-cost and far-reaching modality that can be used to augment existing diabetes prevention programs and improve long-term diet and exercise behavior change adherence. To date, little research has been published regarding the process of SMS text message content development. Understanding how interventions are developed is necessary to evaluate their evidence base and to guide the implementation of effective and scalable mobile health interventions in public health initiatives and in future research.ObjectiveThis study aims to describe the development and refinement of a bank of SMS text messages targeting diet and exercise behavior change to be implemented following a diabetes prevention program.MethodsA bank of 124 theory-based SMS text messages was developed using the Behaviour Change Wheel and linked to active intervention components (behavior change techniques [BCTs]). The Behaviour Change Wheel is a theory-based framework that provides structure to intervention development and can guide the use of evidence-based practices in behavior change interventions. Once the messages were written, 18 individuals who either participated in a diabetes prevention program or were a diabetes prevention coach evaluated the messages on their clarity, utility, and relevance via survey using a 5-point Likert scale. Messages were refined according to participant feedback and recoded to obtain an accurate representation of BCTs in the final bank.Results76/124 (61.3%) messages were edited, 4/124 (3.2%) were added, and 8/124 (6.5%) were removed based on participant scores and feedback. Of the edited messages, 43/76 (57%) received minor word choice and grammar alterations while retaining their original BCT code; the remaining 43% (33/76, plus the 4 newly written messages) were recoded by a reviewer trained in BCT identification.ConclusionsThis study outlines the process used to develop and refine a bank of SMS text messages to be implemented following a diabetes prevention program. This resulted in a bank of 120 theory-based, user-informed SMS text messages that were overall deemed clear, useful, and relevant by both individuals who will be receiving and delivering them. This formative development process can be used as a blueprint in future SMS text messaging development to ensure that message content is representative of the evidence base and is also grounded in theory and evaluated by key knowledge users.

Survey on economic considerations and decisions of key geodata providers and users in Czech public administration

This paper presents the results of an empirical economic data-based survey of the costs and revenues of geographical data and Web services across public administration in Czechia. The survey was composed of questionnaires and interviews. The data was collected from the 19 biggest public producers of geographical information and 25 organizations that use geographical information. The results focus on the economic consequences of data opening, splitting finances within public administration bodies, the prioritization of activities related to geographical information, licensing issues and life cycle planning etc. We also consider user opinions on the restrictions on the (re)use of geographical information of public administration, including open data.

Evaluation of a Digital Health Initiative in Illicit Substance Use: Cross-sectional Survey Study.

BackgroundThe Cracks in the Ice (CITI) community toolkit was developed to provide evidence-based, up-to-date information and resources about crystal methamphetamine to Australians. Given the high rates of internet use in the community and the potential for misinformation, CITI has the potential to play an important role in improving knowledge and challenging misconceptions surrounding crystal methamphetamine.ObjectiveThis study aims to determine (1) whether the CITI toolkit is achieving its aim of disseminating evidence-based information and resources to people who use crystal methamphetamine, their family and friends, health professionals, and the general community and (2) examine the association between the use of CITI and the knowledge and attitudes about crystal methamphetamine.MethodsA cross-sectional web-based survey, open to Australian residents (aged ≥18 years), was conducted from November 2018 to March 2019. People who had previously visited the website (referred to as “website visitors” in this study) and those who had not (“naïve”) were recruited. At baseline, knowledge, attitudes, and demographics were assessed. CITI website visitors then completed a series of site evaluation questions, including the System Usability Scale (SUS), and naïve participants were asked to undertake a guided site tour of a replicated version of the site before completing the evaluation questions and repeating knowledge and attitude scales.ResultsOf a total 2108 participants, 564 (26.7%) reported lifetime use of crystal methamphetamine, 434 (20.6%) were family/friends, 288 (13.7%) were health professionals, and 822 (38.9%) were community members. The average SUS score was 73.49 (SD 13.30), indicating good site usability. Health professionals reported significantly higher SUS scores than community members (P=.02) and people who used crystal methamphetamine (P<.001). Website visitors had significantly higher baseline knowledge than naïve participants (P<.001). Among naïve participants, knowledge scores increased following exposure to the website (mean 15.2, SE 0.05) compared to baseline (mean 14.4, SE 0.05; P<.001). The largest shifts in knowledge were observed for items related to prevalence, legal issues, and the effects of the drug. Stigmatizing attitude scores among the naïve group were significantly lower following exposure to CITI (mean 41.97, SE 0.21) compared to baseline (mean 44.3, SE 0.21; P<.001).ConclusionsThis study provides an innovative evaluation of a national eHealth resource. CITI is achieving its aim of disseminating evidence-based, nonstigmatizing, and useful information and resources about crystal methamphetamine to key end user groups and has received good usability scores across its target groups. Interaction with CITI led to immediate improvements in knowledge about crystal methamphetamine and a decrease in stigmatizing attitudes. CITI demonstrates the important role of digital information and support platforms for translating evidence into practice and improving knowledge and reducing stigma.

Trouble in programmer’s paradise: gender-biases in sharing and recognising technical knowledge on Stack Overflow

ABSTRACT This paper examines gender-biases on Stack Overflow, the world’s largest question-and-answer forum of programming knowledge. Employing a non-binary gender identification built on usernames, I investigate the role of gender in shaping users’ experience in technical forums. The analysis encompasses 11-years of activity, across levels of expertise, language, and specialism, to assess if Stack Overflow is really a paradise for programmers. I first examine individual users, asking if there are gender differences in key user metrics of success, focusing on reputation points, user tenure, and level of activity. Second, I test if there are gender-biases in how technical knowledge is recognised in the question-answer format of the platform. Third, using social network analysis I investigate if interaction on Stack Overflow is organised by gender. Results show that sharing and recognising technical knowledge is dictated by users’ gender, even when it is operationalised beyond a binary. I find that feminine users receive lower scores for their answers, despite exhibiting higher effort in their contributions. I also show that interaction on Stack Overflow is organised by gender. Specifically, that feminine users preferentially interact with other feminine users. The findings emphasise the central role of gender in shaping interaction in technical spaces, a necessity for participation in the masculine-dominated forum. I conclude the study with recommendations for inclusivity in online forums.

Epidemic Intelligence for the Crowd, by the Crowd

Tracking Twitter for public health has shown great potential. However, most recent work has been focused on correlating Twitter messages to influenza rates, a disease that exhibits a marked seasonal pattern. In the presence of sudden outbreaks, how can social media streams be used to strengthen surveillance capacity? In May 2011, Germany reported an outbreak of Enterohemorrhagic Escherichia coli (EHEC). It was one of the largest described outbreaks of EHEC worldwide and the largest in Germany. In this work, we study the crowd's behavior in Twitter during the outbreak. In particular, we report how tracking Twitter helped to detect key user messages that triggered signal detection alarms before MedISys and other well established early warning systems. We also introduce a personalized learning to rank approach that exploits the relationships discovered by: (i) latent semantic topics computed using Latent Dirichlet Allocation (LDA), and (ii) observing the social tagging behavior in Twitter, to rank tweets for epidemic intelligence. Our results provide the grounds for new public health research based on social media.

Monitoring sound levels in the intensive care unit: A mixed-methods system development project to optimize design features for a new electronic interface in the healthcare environment

BackgroundIntensive care units (ICU) are busy round the clock and it is difficult to maintain low sound levels that support patient rest. To help ICU staff manage activities we developed a visual display that monitors and reports sound levels in real-time. This facilitates immediate feedback, encouraging proactive behavior change to limit disturbances. MethodsFollowing the principles of user-centered design practices we created our ‘user persona’ to understand the needs and goals of potential users of the system. We then conducted iterative user testing with current members of the ICU team, primarily using the ‘think aloud’ method to refine the design and functionality of our novel system. Ethnography evaluated team use of the display. ResultsThe final design was simple, clear, and efficient, and both functional and aesthetically pleasing for the key user demographic. We identified challenges in the implementation and adoption process that were separate from the ‘usability’ of the system itself. ConclusionsEmbedding the design process within the core user demographic ensured the final product delivered relevant information for key users, and that this information was intuitive to interpret. Initiating sustainable change is not straightforward. It requires recognition of cultural practices within teams, departments, professions, organizations, and strategies to maximize engagement.