Field-based usability evaluation methodology for mobile geo-applications

An important aspect of a Dutch research project into usable (and well scaled) mobile maps for consumers is presented: the development of an appropriate field-based usability evaluation methodology for the prototype of a geo-mobile application that will be the result of a user centred design approach. Automatic generalisation, required for the user's orientation in space, but also for progressive data transfer, will be an important aspect of the prototype. What is reported here is an effective and technically unique user research methodology, based on a combination of video observation, thinking aloud and semi-structured interviewing. The experiments that have led to this outcome revealed some interesting usability issues that deserve further investigation

Testing the Usability of OpenStreetMap's iD Tool

The objective of this study is to investigate the usability of the iD editor of OpenStreetMap (OSM). To this end a usability test with 18 participants has been conducted. The participants were given mapping tasks to complete using iD and observed with the thinking aloud method as well as screen recording and mouse/keyboard logging. Additionally, the test persons were interviewed after each test. The data gathered were analysed with regard to key usability criteria such as learnability, efficiency, error tolerance, and subjective user satisfaction. The outcome of this study is the identification of usability issues from which possible improvements of the tool have been derived. The study shows that iD is an overall usable tool for novice users, but still shows opportunities for improvement especially in terms of learnability and error handling

User studies in cartography: opportunities for empirical research on interactive maps and visualizations

The possibility of digital interactivity requires us to reenvision the map reader as the map user, and to address the perceptual, cognitive, cultural, and practical considerations that influence the user’s experience with interactive maps and visualizations. In this article, we present an agenda for empirical research on this user and the interactive designs he or she employs. The research agenda is a result of a multi-stage discussion among international scholars facilitated by the International Cartographic Association that included an early round of position papers and two subsequent workshops to narrow into pressing themes and important research opportunities. The focus of our discussion is epistemological and reflects the wide interdisciplinary influences on user studies in cartography. The opportunities are presented as imperatives that cross basic research and user-centered design studies, and identify practical impediments to empirical research, emerging interdisciplinary recommendations to improve user studies, and key research needs specific to the study of interactive maps and visualizations. La possibilité de l’interactivité numérique nous pousse à revoir le lecteur de cartes comme un utilisateur de cartes et à traiter les considérations perceptuelles, cognitives, culturelles et pratiques qui influencent l’expérience d’un utilisateur de cartes et de visualisations interactives. Dans cet article nous présentons un agenda de recherche empirique sur cet utilisateur et sur les conceptions interactives qu’il ou elle réalise. L’agenda de recherche proposé est le résultat d’une discussion en plusieurs étapes menée par des spécialistes internationaux, facilitée par l’association cartographique internationale selon un processus comprenant un premier ensemble de papiers de positions, suivi de deux ateliers dont les objectifs étaient de se concentrer autour de thèmes prioritaires et d'opportunités de recherche majeures. L’objet de la discussion était épistémologique et reflète les larges influences interdisciplinaires des études portant sur les utilisateurs en cartographie. Les opportunités sont présentées comme des impératifs qui associent les recherches fondamentales aux études de conception centrées utilisateurs. Elles permettent d’identifier les obstacles pratiques aux recherches empiriques, les recommandations interdisciplinaires émergeantes pour améliorer les études des utilisateurs et les besoins de recherche prioritaires spécifiques à l’étude des cartes et visualisations interactives

User studies in cartography: A collaborative research agenda

The possibility of digital interactivity requires us to reenvision the map reader as the map user, and to address the new perceptual, cognitive, cultural, and practical considerations that now influence the user's experience with interactive maps and visualizations. Here, we present an agenda for empirical research on these users and the interactive designs they employ. This is one of several research agendas resulting from a multi-stage discussion among international scholars facilitated by the International Cartographic Association, which included an early round of position papers and two subsequent workshops to narrow into pressing themes and important research opportunities. The focus of this agenda is epistemological and reflects the wide interdisciplinary influences on user studies in cartography. The opportunities are presented as imperatives that cross basic research and user-centered design studies, and include practical impediments to empirical research, emerging interdisciplinary recommendations to improve user studies, and key research needs regarding the specific study of interactive maps and visualizations. This presentation is based on the article available at http://dx.doi.org/10.1080/23729333.2017.1288534

National surveillance pilot study unveils a multicenter, clonal outbreak of VIM-2-producing Pseudomonas aeruginosa ST111 in the Netherlands between 2015 and 2017

Verona Integron-encoded Metallo-beta-lactamase (VIM) is the most frequently-encountered carbapenemase in the healthcare-related pathogen Pseudomonas aeruginosa. In the Netherlands, a low-endemic country for antibiotic-resistant bacteria, no national surveillance data on the prevalence of carbapenemase-producing P. aeruginosa (CPPA) was available. Therefore, in 2016, a national surveillance pilot study was initiated to investigate the occurrence, molecular epidemiology, genetic characterization, and resistomes of CPPA among P. aeruginosa isolates submitted by medical microbiology laboratories (MMLs) throughout the country. From 1221 isolates included in the study, 124 (10%) produced carbapenemase (CIM-positive); of these, the majority (95, 77%) were positive for the blaVIM gene using PCR. Sequencing was performed on 112 CIM-positive and 56 CIM-negative isolates (n = 168), and genetic clustering revealed that 75/168 (45%) isolates were highly similar. This genetic cluster, designated Group 1, comprised isolates that belonged to high-risk sequence type ST111/serotype O12, had similar resistomes, and all but two carried the blaVIM-2 allele on an identical class 1 integron. Additionally, Group 1 isolates originated from around the country (i.e. seven provinces) and from multiple MMLs. In conclusion, the Netherlands had experienced a nationwide, inter-institutional, clonal outbreak of VIM-2-producing P. aeruginosa for at least three years, which this pilot study was crucial in identifying. A structured, national surveillance program is strongly advised to monitor the spread of Group 1 CPPA, to identify emerging clones/carbapenemase genes, and to detect transmission in and especially between hospitals in order to control current and future outbreaks