scholarly journals A random-dot kinematogram for web-based vision research

2017 ◽  
Author(s):  
Sivananda Rajananda ◽  
Hakwan Lau ◽  
Brian Odegaard

AbstractWeb-­based experiments using visual stimuli have become increasingly common in recent years, but many frequently-used stimuli in vision research have yet to be developed for online platforms. Here, we introduce the first open access random-dot kinematogram (RDK) for use in web browsers. This fully customizable RDK offers options to implement several different types of noise (random position, random walk, random direction) and parameters to control aperture shape, coherence level, the number of dots, and other features. We include links to commented JavaScript code for easy implementation in web-based experiments, as well as an example of how this stimulus can be integrated as a plugin with a JavaScript library for online studies (jsPsych).

2021 ◽  
Vol 5 ◽  
pp. 96-104
Author(s):  
Didier Haid Alvarado Acosta

In March of 2020, the COVID-19 outbreak forced people to lock themselves inside their homes and begin the process of transitioning from face-to-face activities at work, schools and universities to a 100 % virtual method. Even when Communication Technologies (ICT) and online platforms have seen growth over the past two decades, including various virtual libraries developed by database publishers or web-based training programs that appear to shorten the learning curve (Lee, Hong y Nian, 2002), many people were unprepared for this transition and all of them are now dedicated to entering the new reality. In this order of ideas, the activities that have traditionally required the assistance of the staff have had to adapt with the use of new tools, which meet daily needs. A clear example is the field work collection tasks. In this group, there are different types such as surveys, photographs, reviews or on-site inspections. The current work presents the use of tools for collecting, validating, analysing and presenting data remotely and in real time. All of them based on the ArcGIS Online platform.


2021 ◽  
Author(s):  
Younes Strittmatter ◽  
Markus Spitzer ◽  
Andrea Kiesel

One of the recent major advances in cognitive psychology and neuroscience research has been the option of web-based in addition to lab-based experimental research. This option fosters experimental research by increasing the pace and size of collecting data sets. Importantly, web-based research profits heavily from integrating tasks that are frequently applied in cognitive psychology and neuroscience into open access software. For instance, an open access random-dot kinematogram (RDK) plugin has recently been integrated into the jsPsych software for web-based research. This plugin allows researchers to implement experimental tasks with varying coherence levels (with that varying task difficulty) of moving dots or varying signal to noise ratios of colored dots. Here, we introduce the random-object kinematogram (ROK) plugin for the jsPsych software which, among other new features, enables researchers to include oriented objects (e.g., triangles or arrows) instead of dots as stimuli. This permits experiments with feature congruency (e.g., upwards moving triangles pointing upwards) or incongruency (e.g., upwards moving triangles pointing downwards), allowing to induce gradual degrees of stimulus interference, in addition to gradual degrees of task difficulty. We elaborate on possible set-ups with this plugin in two experiments examining participants' RTs and error rates on different combinations of coherence and congruency levels. Results showed increased RTs and error rates on trials with lower coherence percentages, and on trials with lower congruency levels. We discuss other new features of the ROK plugin and conclude that the possibility of gradually varying the coherence level and congruency level independently from each other, offers novel possibilities when conducting web-based experiments.


2016 ◽  
Vol 12 (07) ◽  
pp. 18 ◽  
Author(s):  
Zhongcheng Lei ◽  
Wenshan Hu ◽  
Hong Zhou

<div class="WordSection1"><p><span style="font-size: 10px;">With the recent achievements in Internet and communication technology and its utilization in online laboratory, remote learning and online laboratory are made possible in the last few decades. This not only provides learning opportunities for people living in rural areas of developing countries, but also offers simple alternatives for those who are already able to access educational resources. The evolution of Web technologies makes it relatively easy to facilitate laboratory deployments, thus, more and more different online laboratory platforms emerge. However, the use of Hyper Text Mark-up Language (HTML5) and related standards such as WebGL and CSS3 in experimental platform, which is future trends and provides full-featured environment, is rare so far. This paper introduces a new HTML5 version of Networked Control System Laboratory (NCSLab), which has been developing for over 10 years since 2006. The 3D version of NCSLab has been developing for almost 5 years in Wuhan University (WHU), whose rendering solution is changed from Flash 3D engine to HTML5 recently. Therefore, Flash player plug-in is eliminated to provide better user experience for users since most of the mainstream web browsers are compatible with HTML5.</span></p></div>


2019 ◽  
Vol 2 ◽  
pp. 1-8
Author(s):  
Jan Wilkening ◽  
Keni Han ◽  
Mathias Jahnke

<p><strong>Abstract.</strong> In this article, we present a method for visualizing multi-dimensional spatio-temporal data in an interactive web-based geovisualization. Our case study focuses on publicly available weather data in Germany. After processing the data with Python and desktop GIS, we integrated the data as web services in a browser-based application. This application displays several weather parameters with different types of visualisations, such as static maps, animated maps and charts. The usability of the web-based geovisualization was evaluated with a free-examination and a goal-directed task, using eye-tracking analysis. The evaluation focused on the question how people use static maps, animated maps and charts, dependent on different tasks. The results suggest that visualization elements such as animated maps, static maps and charts are particularly useful for certain types of tasks, and that more answering time correlates with less accurate answers.</p>


2013 ◽  
Vol 28 (2) ◽  
pp. 248-258 ◽  
Author(s):  
Carrie M. Carretta ◽  
Ann W. Burgess

This study reports the findings of an anonymous web-based survey to test differences in symptom presentation (depression, anxiety, posttraumatic stress disorder [PTSD]) among women who experienced different types of sexual trauma (forcible, pressured, sex stress). The study used a descriptive cross-sectional design with an online convenience sample of 243 adult females living primarily in the United States. The findings revealed that there was a statistically significant difference among type of sexual trauma groups for depression (p = .013) and PTSD (p = .044) but not for anxiety (p = .183). Post hoc analysis of the overall difference in depression revealed that the multiple rape type group (p = .010) and the forcible sex group (p = .016) had higher levels of depression.


2019 ◽  
pp. 130-148
Author(s):  
Laurel Northouse ◽  
Clayton Shuman ◽  
Moira Visovatti ◽  
Bonnie Dockham ◽  
Marita Titler

This chapter describes the development and testing of the FOCUS program with patient-caregiver dyads (i.e., pairs) as the unit of care. The chapter reviews studies that examined (1) the efficacy of the FOCUS program when tested in randomized clinical trials, (2) the effectiveness of the program when implemented in Cancer Support Community affiliates in three states, and (3) outcomes when translated to a tailored, web-based program. Results indicate that FOCUS consistently produced positive outcomes for cancer patients and their caregivers in these studies. The program also improved patient and caregiver outcomes when delivered to patients with different types and stages of cancer, to spousal and nonspousal family caregivers, and in various intervention doses (three-, five-, and six-session programs). The chapter concludes with plans for further implementation of FOCUS and existing dissemination activities.


2018 ◽  
Vol 13 (1) ◽  
pp. 24-26 ◽  
Author(s):  
Richard Hayman

A Review of: Chang, Y-W. (2017). Comparative study of characteristics of authors between open access and non-open access journals in library and information science. Library & Information Science Research, 39(1), 8-15. http://dx.doi.org/10.1016/j.lisr.2017.01.002   Abstract  Objective – To examine the occupational characteristics and publication habits of library and information science (LIS) authors regarding traditional journals and open access journals. Design – Content analysis. Setting – English language research articles published in open access (OA) journals and non-open access (non-OA) journals from 2008 to 2013 that are indexed in LIS databases. Subjects – The authorship characteristics for 3,472 peer-reviewed articles. Methods – This researcher identified 33 total journals meeting the inclusion criteria by using the LIS categories within 2012 Journal Citation Reports (JCR) to find 13 appropriate non-OA journals, and within the Directory of Open Access Journals (DOAJ) to identify 20 appropriate OA journals. They found 1,665 articles by 3,186 authors published in the non-OA journals, and another 1,807 articles by 3,446 authors within the OA journals. The researcher used author affiliation to determine article authors’ occupations using information included in the articles themselves or by looking for information on the Internet, and excluded articles when occupational information could not be located. Authors were categorized into four occupational categories: Librarians (practitioners), Academics (faculty and researchers), Students (graduate or undergraduate), and Others. Using these categories, the author identified 10 different types of collaborations for co-authored articles. Main Results – This research involves three primary research questions. The first examined the occupational differences between authors publishing in OA journals versus non-OA journals. Academics (faculty and researchers) more commonly published in non-OA journals (58.1%) compared to OA journals (35.6%). The inverse was true for librarian practitioners, who were more likely to publish in OA journals (53.9%) compared to non-OA journals (25.5%). Student authors, a combined category that included both graduate and undergraduate students, published more in non-OA journals (10.1%) versus in OA journals (5.0%). The final category of “other” saw only a slight difference between non-OA (6.3%) and OA (5.5%) publication venues. This second research question explored the difference in the proportion of LIS authors who published in OA and non-OA journals. Overall, authors were more likely to publish in OA journals (72.4%) vs. non-OA (64.3%). Librarians tended to be primary authors in OA journals, while LIS academics tend to be primary authors for articles in non-OA publications. Academics from outside the LIS discipline but contributing to the disciplinary literature were more likely to publish in non-OA journals. Regarding trends over time, this research showed a decrease in the percentage of librarian practitioners and “other” authors publishing in OA journals, while academics and students increased their OA contributions rates during the same period.  Finally, the research explored whether authors formed different types of collaborations when publishing in OA journals as compared to non-OA journals. When examining co-authorship of articles, just over half of all articles published in OA journals (54.4%) and non-OA journals (53.2%) were co-authored. Overall the researcher identified 10 types of collaborative relationships and examined the rates for publishing in OA versus non-OA journals for these relationships. OA journals saw three main relationships, with high levels of collaborations between practitioner librarians (38.6% of collaborations), between librarians and academics (20.5%), and between academics only (18.0%). Non-OA journals saw four main relationships, with collaborations between academics appearing most often (34.1%), along with academic-student collaborations (21.5%), practitioner librarian collaborations (15.5%), and librarian-academic collaborations (13.2%). Conclusion – LIS practitioner-focused research tends to appear more often in open access journals, while academic-focused researcher tends to appear more often in non-OA journals. These trends also appear in research collaborations, with co-authored works involving librarians appearing more often in OA journals, and collaborations that include academics more likely to appear in non-OA journals.


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