The Experts below are selected from a list of 94581 Experts worldwide ranked by ideXlab platform
Ben Shneiderman - One of the best experts on this subject based on the ideXlab platform.
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Finding Governmental Statistical Data on the Web: Three Empirical Studies of the FedStats Topics Page (2003)
2005Co-Authors: Irina Ceaparu, Ben ShneidermanAbstract:Governmental agencies provide statistical data on their web sites. These large collections of data need appropriate interfaces that would guide the general public, as well as the researchers, to easily and Successfully find information they seek. This paper summarizes the results of three empirical studies with 15 users in each group of the FedStats Topics web page. The evolution from 645 alphabetically organized links, to 549 categorically organized links, to 215 categorically organized links tied to portal pages produced a steady rise in Successful Task completion from 15% to 28% to 42%. User satisfaction also increased. We make recommendations based on these data and our observations of users.
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Finding governmental statistical data on the web: a study of categorically organized links for the FedStats topics page
Journal of the American Society for Information Science and Technology, 2004Co-Authors: Irina Ceaparu, Ben ShneidermanAbstract:More than 100 U.S. governmental agencies offer links through FedStats, a centralized Web site that facilitates access to statistical tables, reports, and agencies. This and similar large collections need appropriate interfaces to guide the general public to easily and Successfully find information they seek. This paper summarizes the results of 3 empirical studies of alternate organization concepts of the FedStats Topics Web page. Each study had 15 participants. The evolution from 645 alphabetically organized links, to 549 categorically organized links, to 215 categorically organized links tied to portal pages produced a steady rise in Successful Task completion from 15.6 to 24.4 to 42.2%. User satisfaction also increased. We make recommendations based on these data and our observations of users.
Irina Ceaparu - One of the best experts on this subject based on the ideXlab platform.
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Finding Governmental Statistical Data on the Web: Three Empirical Studies of the FedStats Topics Page (2003)
2005Co-Authors: Irina Ceaparu, Ben ShneidermanAbstract:Governmental agencies provide statistical data on their web sites. These large collections of data need appropriate interfaces that would guide the general public, as well as the researchers, to easily and Successfully find information they seek. This paper summarizes the results of three empirical studies with 15 users in each group of the FedStats Topics web page. The evolution from 645 alphabetically organized links, to 549 categorically organized links, to 215 categorically organized links tied to portal pages produced a steady rise in Successful Task completion from 15% to 28% to 42%. User satisfaction also increased. We make recommendations based on these data and our observations of users.
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Finding governmental statistical data on the web: a study of categorically organized links for the FedStats topics page
Journal of the American Society for Information Science and Technology, 2004Co-Authors: Irina Ceaparu, Ben ShneidermanAbstract:More than 100 U.S. governmental agencies offer links through FedStats, a centralized Web site that facilitates access to statistical tables, reports, and agencies. This and similar large collections need appropriate interfaces to guide the general public to easily and Successfully find information they seek. This paper summarizes the results of 3 empirical studies of alternate organization concepts of the FedStats Topics Web page. Each study had 15 participants. The evolution from 645 alphabetically organized links, to 549 categorically organized links, to 215 categorically organized links tied to portal pages produced a steady rise in Successful Task completion from 15.6 to 24.4 to 42.2%. User satisfaction also increased. We make recommendations based on these data and our observations of users.
Niek S. Klazinga - One of the best experts on this subject based on the ideXlab platform.
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Why a Successful Task substitution in glaucoma care could not be transferred from a hospital setting to a primary care setting: a qualitative study
Implementation science : IS, 2013Co-Authors: Kim M. Holtzer-goor, Thomas Plochg, Hans G. Lemij, Esther Van Sprundel, Marc A. Koopmanschap, Niek S. KlazingaAbstract:Background: Healthcare systems are challenged by a demand that exceeds available resources. One policy to meet this challenge is Task substitution-transferring Tasks to other professions and settings. Our study aimed to explore stakeholders’ perceived feasibility of transferring hospital-based monitoring of stable glaucoma patients to primary care optometrists. Methods: A case study was undertaken in the Rotterdam Eye Hospital (REH) using semi-structured interviews and document reviews. They were inductively analysed using three implementation related theoretical perspectives: sociological theories on professionalism, management theories, and applied political analysis. Results: Currently it is not feasible to use primary care optometrists as substitutes for optometrists and ophthalmic technicians working in a hospital-based glaucoma follow-up unit (GFU). Respondents’ narratives revealed that: the glaucoma specialists’ sense of urgency for Task substitution outside the hospital diminished after establishing a GFU that satisfied their professionalization needs; the return on investments were unclear; and reluctant key stakeholders with strong power positions blocked implementation. The window of opportunity that existed for Task substitution in person and setting in 1999 closed with the institutionalization of the GFU. Conclusions: Transferring the monitoring of stable glaucoma patients to primary care optometrists in Rotterdam did not seem feasible. The main reasons were the lack of agreement on professional boundaries and work domains, the institutionalization of the GFU in the REH, and the absence of an appropriate reimbursement system. Policy makers considering substituting Tasks to other professionals should carefully think about the implementation process, especially in a two-step implementation process (substitution in person and in setting) such as this case. Involving the substituting professionals early on to ensure all stakeholders see the change as a normal step in the professionalization of the substituting professionals is essential, as is implementing the Task substitution within the window of opportunity.
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why a Successful Task substitution in glaucoma care could not be transferred from a hospital setting to a primary care setting a qualitative study
Implementation Science, 2013Co-Authors: Kim M Holtzergoor, Thomas Plochg, Hans G. Lemij, Esther Van Sprundel, Marc A. Koopmanschap, Niek S. KlazingaAbstract:Healthcare systems are challenged by a demand that exceeds available resources. One policy to meet this challenge is Task substitution-transferring Tasks to other professions and settings. Our study aimed to explore stakeholders’ perceived feasibility of transferring hospital-based monitoring of stable glaucoma patients to primary care optometrists. A case study was undertaken in the Rotterdam Eye Hospital (REH) using semi-structured interviews and document reviews. They were inductively analysed using three implementation related theoretical perspectives: sociological theories on professionalism, management theories, and applied political analysis. Currently it is not feasible to use primary care optometrists as substitutes for optometrists and ophthalmic technicians working in a hospital-based glaucoma follow-up unit (GFU). Respondents’ narratives revealed that: the glaucoma specialists’ sense of urgency for Task substitution outside the hospital diminished after establishing a GFU that satisfied their professionalization needs; the return on investments were unclear; and reluctant key stakeholders with strong power positions blocked implementation. The window of opportunity that existed for Task substitution in person and setting in 1999 closed with the institutionalization of the GFU. Transferring the monitoring of stable glaucoma patients to primary care optometrists in Rotterdam did not seem feasible. The main reasons were the lack of agreement on professional boundaries and work domains, the institutionalization of the GFU in the REH, and the absence of an appropriate reimbursement system. Policy makers considering substituting Tasks to other professionals should carefully think about the implementation process, especially in a two-step implementation process (substitution in person and in setting) such as this case. Involving the substituting professionals early on to ensure all stakeholders see the change as a normal step in the professionalization of the substituting professionals is essential, as is implementing the Task substitution within the window of opportunity.
John C. Gore - One of the best experts on this subject based on the ideXlab platform.
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An event-related functional MRI study comparing interference effects in the Simon and Stroop Tasks.
Brain research. Cognitive brain research, 2002Co-Authors: Bradley S. Peterson, Michael J. Kane, Gerianne M. Alexander, Cheryl Lacadie, Pawel Skudlarski, Hoi-chung Leung, James W. May, John C. GoreAbstract:The Stroop and Simon Tasks typify a class of interference effects in which the introduction of Task-irrelevant stimulus characteristics robustly slows reaction times. Behavioral studies have not succeeded in determining whether the neural basis for the resolution of these interference effects during Successful Task performance is similar or different across Tasks. Event-related functional magnetic resonance imaging (fMRI) studies were obtained in 10 healthy young adults during performance of the Stroop and Simon Tasks. Activation during the Stroop Task replicated findings from two earlier fMRI studies. These activations were remarkably similar to those observed during the Simon Task, and included anterior cingulate, supplementary motor, visual association, inferior temporal, inferior parietal, inferior frontal, and dorsolateral prefrontal cortices, as well as the caudate nuclei. The time courses of activation were also similar across Tasks. Resolution of interference effects in the Simon and Stroop Tasks engage similar brain regions, and with a similar time course. Therefore, despite the widely differing stimulus characteristics employed by these Tasks, the neural systems that subserve Successful Task performance are likely to be similar as well.
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Research report An event-related functional MRI study comparing interference effects in the Simon and Stroop Tasks
2002Co-Authors: Bradley S. Peterson, Michael J. Kane, Gerianne M. Alexander, Cheryl Lacadie, Pawel Skudlarski, Hoi-chung Leung, James W. May, John C. GoreAbstract:The Stroop and Simon Tasks typify a class of interference effects in which the introduction of Task-irrelevant stimulus characteristics robustly slows reaction times. Behavioral studies have not succeeded in determining whether the neural basis for the resolution of these interference effects during Successful Task performance is similar or different across Tasks. Event-related functional magnetic resonance imaging (fMRI) studies were obtained in 10 healthy young adults during performance of the Stroop and Simon Tasks. Activation during the Stroop Task replicated findings from two earlier fMRI studies. These activations were remarkably similar to those observed during the Simon Task, and included anterior cingulate, supplementary motor, visual association, inferior temporal, inferior parietal, inferior frontal, and dorsolateral prefrontal cortices, as well as the caudate nuclei. The time courses of activation were also similar across Tasks. Resolution of interference effects in the Simon and Stroop Tasks engage similar brain regions, and with a similar time course. Therefore, despite the widely differing stimulus characteristics employed by these Tasks, the neural systems that subserve Successful Task performance are likely to be similar as well. © 2002 Elsevier Science B.V. All rights reserved.
Gerd Hirzinger - One of the best experts on this subject based on the ideXlab platform.
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IROS - Workspace comparisons of setup configurations for human-robot interaction
2010 IEEE RSJ International Conference on Intelligent Robots and Systems, 2010Co-Authors: Franziska Zacharias, Ian S. Howard, Thomas Hulin, Gerd HirzingerAbstract:In virtual assembly verification or remote maintenance Tasks, bimanual haptic interfaces play a crucial role in Successful Task completion. This paper proposes a method for objectively comparing how well a haptic interface covers the reachable workspace of human arms. Two system configurations are analyzed for a recently introduced haptic device that is based on two DLR-KUKA light weight robots: the standard configuration, where the device is opposite the human operator, and the ergonomic configuration, where the haptic device is mounted behind the human operator. The human operator directly controls the robotic arms using handles. The analysis is performed using a representation of the robot arm workspace. The merits of restricting the comparisons to the most significant regions of the human workspace are discussed. Using this method, a greater workspace correspondence for the ergonomic configuration was shown.
