scholarly journals Design factors affecting relevance judgment behaviour in the context of metadata surrogates

2010 ◽  
Vol 36 (6) ◽  
pp. 780-797 ◽  
Author(s):  
Panos Balatsoukas ◽  
Ann O'Brien ◽  
Anne Morris
Keyword(s):  
Factors Affecting ◽  
Relevance Judgment ◽  
Design Factors

Understanding How Learners Use Massive Open Online Courses and Why They Drop Out

2016 ◽  
Vol 55 (5) ◽  
pp. 724-752 ◽  
Author(s):  
Ghada Refaat El Said
Keyword(s):  
Online Courses ◽  
Drop Out ◽  
Learning Activity ◽  
Massive Open Online ◽  
Factors Affecting ◽  
Massive Open Online Course ◽  
Semistructured Interviews ◽  
Independent Design ◽  
Design Factors ◽  
Self Learning

This article presents a qualitative study on Massive Open Online Course (MOOC) dropout in a developing world. Thematic analyses of semistructured interviews were conducted with 52 learners, eight weeks after their actual registration for a course of their choice as part of a self-learning activity. The results uncover novel design factors affecting MOOC retention. Among these factors are Learner Control, in which users can design their own long-term learning track from various course modules; Integrative Design, comprising learners’ own accounts on social media; and Independent Design, in which a course’s modules can be taught separately and learners need not complete an overall course but rather can select modules from various courses. Mobility and Language are identified as important decisive factors for users to drop out from or complete a MOOC Course. This research also highlights the importance of Diversity and Novelty for this type of application. The research reveals the Multitasking Behavior of users, leading to the need for Easy-to-Scan content. The findings provide a basis for improving the understanding toward reasons for MOOC drops and suggest a number of practical design recommendations for designers and providers. Furthermore, the completion rate observed in this study was slightly higher than was typically found in previous studies. This result might suggest that using a MOOC as a learning opportunity within the context of a university-accredited program would increase the likelihood of completion.

scholarly journals Analysis of Navigation Safety Regarding Tankers in Narrow Waterways

2018 ◽  
Vol 55 (1) ◽  
pp. 201-217
Author(s):  
Nermin Hasanspahić ◽  
Vlado Frančić ◽  
Igor Rudan ◽  
Lovro Maglić
Keyword(s):  
Loading Condition ◽  
Traffic Density ◽  
Related Factors ◽  
Factors Affecting ◽  
Bottom Type ◽  
Accident Probability ◽  
Assessment Matrix ◽  
Design Factors ◽  
Ship Speed ◽  
Important Objective

Sailing of tanker ships in specific navigation areas, such as narrow waterways, is a particularly delicate navigational venture, where one of the greatest related risks is grounding. Grounding of a tanker in a narrow waterway is an event that can cause many adverse consequences, the most important among them being environmental pollution, explosion or onboard fire damaging the ship, injuries and lost lives of crewmembers. Factors affecting the safety of tanker navigation in narrow waterways can be principally divided into geometric, traffic, meteorological and oceanological factors, ship design factors and marine equipment faults as well as human-related factors. With a view to minimizing the possibility of grounding or contact, the assessment of risks is to be considered indispensable and primarily aimed at influencing accident probability and/or consequence factors as its most important objective. The paper analyses the safety of tanker navigation in narrow waterways based on the assessment of risk of grounding. The event influential probability factors that are taken into consideration comprise the narrow waterway category, meteorological and oceanological conditions, traffic density and VTS coverage of the navigable area, while factors such as ship speed, bottom type, hull quality and loading condition are factors related to consequences. Using the risk assessment matrix, estimated values used for evaluation of the safety of tanker navigation in narrow waterways are assigned to probability factors and factors of consequences.

Individual differences in effective interview design: Factors affecting question choice

2020 ◽  
Vol 28 (3) ◽  
pp. 310-321
Author(s):  
Andrew B. Speer ◽  
Andrew P. Tenbrink ◽  
Michael G. Schwendeman ◽  
Lauren J. Wegmeyer
Keyword(s):  
Individual Differences ◽  
Factors Affecting ◽  
Design Factors

Factors affecting relevance judgment: a report from TREC Legal track

2011 ◽  
Vol 67 (2) ◽  
pp. 264-278 ◽  
Author(s):  
Heting Chu
Keyword(s):  
Short Term Memory ◽  
Human Beings ◽  
Short Term ◽  
Content Type ◽  
Factors Affecting ◽  
Relevance Judgment ◽  
Relevance Judgments ◽  
Interactive Task ◽  
Practical Implications ◽  
Made In

PurposeThis study intends to identify factors that affect relevance judgment of retrieved information as part of the 2007 TREC Legal track interactive task.Design/methodology/approachData were gathered and analyzed from the participants of the 2007 TREC Legal track interactive task using a questionnaire which includes not only a list of 80 relevance factors identified in prior research, but also a space for expressing their thoughts on relevance judgment in the process.FindingsThis study finds that topicality remains a primary criterion, out of various options, for determining relevance, while specificity of the search request, task, or retrieved results also helps greatly in relevance judgment.Research limitations/implicationsRelevance research should focus on the topicality and specificity of what is being evaluated as well as conducted in real environments.Practical implicationsIf multiple relevance factors are presented to assessors, the total number in a list should be below ten to take account of the limited processing capacity of human beings' short‐term memory. Otherwise, the assessors might either completely ignore or inadequately consider some of the relevance factors when making judgment decisions.Originality/valueThis study presents a method for reducing the artificiality of relevance research design, an apparent limitation in many related studies. Specifically, relevance judgment was made in this research as part of the 2007 TREC Legal track interactive task rather than a study devised for the sake of it. The assessors also served as searchers so that their searching experience would facilitate their subsequent relevance judgments.

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