User Groups and Different Levels of Control in Recommender Systems

2017 ◽  
pp. 308-323
Author(s):  
Christine Mendez ◽  
Vlatko Lukarov ◽  
Christoph Greven ◽  
André Calero Valdez ◽  
Felix Dietze ◽  
...  
Keyword(s):  
Recommender Systems ◽  
User Groups ◽  
Different Levels ◽  
Levels Of Control

Criterion and Construct Validity and Reliability of the Pediatric IV Difficulty Score

2020 ◽  
Author(s):  
Jane H. Hartman ◽  
James F. Bena ◽  
Shannon L. Morrison ◽  
Nancy M. Albert
Keyword(s):  
Construct Validity ◽  
Vascular Access ◽  
Pediatric Patients ◽  
Peripheral Vascular ◽  
Validity And Reliability ◽  
User Groups ◽  
Validity Criteria ◽  
Placement Success ◽  
Difficulty Score ◽  
Different Levels

Highlights Abstract Background: In pediatric patients, intravenous placement success may be related to predetermined vascular access difficulty. The study purpose was to examine validity and reliability of the 6-item Pediatric Intravenous Difficulty Score. Methods: We determined if a tool that assesses pediatric intravenous difficulty was associated with clinical outcomes of peripheral attempts (criterion validity), hypotheses regarding patients’ age, race, and medical diagnosis (construct validity), and reliability of difficulty levels. Results: In 596 episodes of peripheral intravenous attempts, first-attempt success, overall success, and number of staff attempting access were associated with level of intravenous access difficulty by tool score. The tool met hypothesized construct validity criteria, and in multivariable modeling, the tool was reliable based on difficulty levels of 2 user groups. Conclusions: The 6-item Pediatric Intravenous Difficulty Score has criterion and construct validity and is reliable over time among clinicians with different levels of expertise in peripheral vascular access.

USING RESTRICTED RANDOM WALKS FOR LIBRARY RECOMMENDATIONS AND KNOWLEDGE SPACE EXPLORATION

2007 ◽  
Vol 21 (02) ◽  
pp. 355-373 ◽  
Author(s):  
MARKUS FRANKE ◽  
ANDREAS GEYER-SCHULZ
Keyword(s):  
User Interface ◽  
Random Walks ◽  
Recommender Systems ◽  
Space Exploration ◽  
Knowledge Space ◽  
Online Catalog ◽  
Different Levels ◽  
Cluster Level ◽  
Do So

Implicit recommender systems provide a valuable aid to customers browsing through library corpora. We present a method to realize such a recommender especially for, but not limited to, libraries. The method is cluster-based, scales well for large collections, and produces recommendations of good quality. The approach is based on using session histories of visitors of the library's online catalog in order to generate a hierarchy of nondisjunctive clusters. Depending on the user's needs, the clusters at different levels of the hierarchy can be employed as recommendations. Using the prototype of a user interface we show that, if, for instance, the user is willing to sacrifice some precision in order to gain a higher number of documents during a specific session, he or she can do so easily by adjusting the cluster level via a slider.

scholarly journals Different levels of control prevent interferon-γ-inducible HLA-class II expression in human neuroblastoma cells

Oncogene ◽  
2003 ◽  
Vol 22 (49) ◽  
pp. 7848-7857 ◽  
Author(s):  
Michela Croce ◽  
Alessandro De Ambrosis ◽  
Maria V Corrias ◽  
Vito Pistoia ◽  
Marzia Occhino ◽  
...  
Keyword(s):  
Neuroblastoma Cells ◽  
Class Ii ◽  
Interferon Γ ◽  
Hla Class Ii ◽  
Human Neuroblastoma Cells ◽  
Human Neuroblastoma ◽  
Different Levels ◽  
Levels Of Control

The Legislative Effects of Presidential Partisan Powers in Post-Communist Russia

2008 ◽  
Vol 43 (3) ◽  
pp. 424-453 ◽  
Author(s):  
Paul Chaisty
Keyword(s):  
Political Systems ◽  
Policy Effects ◽  
Short Period ◽  
The Law ◽  
Party Support ◽  
Distribution Of Power ◽  
Different Levels ◽  
Law Making ◽  
Levels Of Control

CURRENT SCHOLARSHIP ON PRESIDENTIAL POLITICAL SYSTEMS FINDS that the distribution of power between presidents and assemblies can vary significantly from one presidential polity to the next, and can even change within the same presidential regime over a relatively short period of time. Presidents are shown to exercise different levels of control over the law-making process according to the de jure legislative powers at their disposal – initiation, veto, veto override, budgetary and decree powers– and their de facto partisan power – the level of disciplined party support that they command within assemblies. Different combinations of these powers can have strikingly different institutional, behavioural and policy effects. Indeed, such variation has led some analysts to question the usefulness of models of executive–legislative relations that are based solely on the traditional distinction between presidential and parliamentary political systems.

scholarly journals Users Attitudes Toward Movie-Related Websites And E-Satisfaction

2011 ◽  
Vol 2 (3) ◽  
Author(s):  
Yoon Cho ◽  
Joseph Ha
Keyword(s):  
Customer Satisfaction ◽  
Web Sites ◽  
Consumer Satisfaction ◽  
Ease Of Use ◽  
Perceived Ease Of Use ◽  
Uses And Gratification ◽  
Uses And Gratification Theory ◽  
Positive Attitudes ◽  
User Groups ◽  
Different Levels

Numerous websites provide information, sell products, and offer services. However, not many websites have focused on usability issues, such as ease of use, usefulness, and customer satisfaction. Therefore, in this paper, the authors first consider what factors affect ease of use and usefulness and then how ease of use and usefulness affect attitudes toward websites and customer satisfaction. This study classified four different user groups based on their degree of involvement to measure different levels of perceived ease of use and usefulness. Uses and gratification theory (Herzog 1944; McGuire 1974; Luo 2002) has been applied in this study to explain users’ attitudes toward movie-related web sites and consumer satisfaction. This study found that online users’ positive attitudes towards movie-related websites impact their satisfaction, while their positive attitudes do not significantly lead to the actual purchase of tickets online. The findings of the study contribute to the development of the uses and gratification theory by applying it to the online users’ attitudes toward movie-related sites. Further, this study provides implications and offers suggestions to e-businesses dealing with movie-related products and services.

Usability evaluation of a library website with different end user groups

2018 ◽  
Vol 52 (1) ◽  
pp. 75-90 ◽  
Author(s):  
Katja Kous ◽  
Maja Pušnik ◽  
Marjan Heričko ◽  
Gregor Polančič
Keyword(s):  
Usability Testing ◽  
Testing Procedure ◽  
End Users ◽  
End User ◽  
Specific Domain ◽  
Measurement Framework ◽  
Significant Difference ◽  
Different Types ◽  
User Groups ◽  
Different Levels

To ensure a certain degree of usability, a library website should be carefully designed, especially since end users constitute a multitude of people with different needs and demands. The focal objective of this research was to investigate how different types of end users (i.e. pupils, students, the working population, seniors and researchers) respond to a library website in terms of its effectiveness, efficiency and satisfaction, which together represent its usability. The answers were obtained by performing formal usability testing, including think-aloud protocol, log analysis and questionnaires. The results of the statistical analysis show that different groups of end users achieve different levels of effectiveness and efficiency, while there is no significant difference between groups in satisfaction level. The results also indicate that participants did not achieve the threshold for a usable website. Based on the identified weaknesses, researchers present recommendations for improving a website’s usefulness, especially for non-experienced users. This research has two main contributions: (1) the connection between the theoretical definition and practical use of ISO 9241-11 attributes and (2) a usability testing procedure with a measurement framework applicable for different types of users in a specific domain, which could be applied to other domains.

scholarly journals MalLo March: A Live Sonified Performance With User Interaction

2016 ◽  
Author(s):  
KatieAnna E. Wolf ◽  
Reid Oda
Keyword(s):  
Real Time ◽  
Interaction Design ◽  
Web Application ◽  
User Interaction ◽  
Audience Member ◽  
Percussion Instrument ◽  
Web App ◽  
Different Levels ◽  
The Web ◽  
Levels Of Control

In this extended abstract we present a new performance piece titled MalLo March that uses MalLo, a predictive percussion instrument, to allow for real-time sonification of live performers. The piece consists of two movements where in the first movement audience members will use a web application and headphones to listen to a sonification of MalLo instruments as they are played live on stage. During the second movement each audience member will use an interface in the web app to design their own sonification of the instruments to create a personalized version of the performance. We present an overview of the hardware and interaction design, highlighting various listening modes that provide audience members with different levels of control in designing the sonification of the live performers.

scholarly journals Modelling the Potential Health Impact of the COVID-19 Pandemic on a Hypothetical European Country

2020 ◽  
Author(s):  
Nick Wilson ◽  
Lucy Telfar Barnard ◽  
Amanda Kvalsvig ◽  
Ayesha Verrall ◽  
Michael Baker ◽  
...  
Keyword(s):  
Simulation Model ◽  
European Country ◽  
Health Impact ◽  
Potential Health ◽  
Link Type ◽  
Different Levels ◽  
Levels Of Control

AbstractA SEIR simulation model for the COVID-19 pandemic was developed (http://covidsim.eu) and applied to a hypothetical European country of 10 million population. Our results show which interventions potentially push the epidemic peak into the subsequent year (when vaccinations may be available) or which fail. Different levels of control (via contact reduction) resulted in 22% to 63% of the population sick, 0.2% to 0.6% hospitalised, and 0.07% to 0.28% dead (n=6,450 to 28,228).

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