Meter design-factors affecting consumer safety

Author(s):  
F.M. Gray
2010 ◽  
Vol 36 (6) ◽  
pp. 780-797 ◽  
Author(s):  
Panos Balatsoukas ◽  
Ann O'Brien ◽  
Anne Morris

2016 ◽  
Vol 55 (5) ◽  
pp. 724-752 ◽  
Author(s):  
Ghada Refaat El Said

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.


2018 ◽  
Vol 55 (1) ◽  
pp. 201-217
Author(s):  
Nermin Hasanspahić ◽  
Vlado Frančić ◽  
Igor Rudan ◽  
Lovro Maglić

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.


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

2012 ◽  
Vol 605-607 ◽  
pp. 34-37
Author(s):  
Ming Xiang Zang ◽  
Ting Wang ◽  
Chen Liu ◽  
Yong Rui Zhao

Currently, 3D multi-chip stack assembly is becoming the future development direction of advanced manufacturing process for printed circuit board. However, during the process of Components stacked packages, Warpage control of chips in the reflow soldering is particularly important. By Combining Taguchi method and injection molding simulation software – Moldflow, this paper studied FBGA and PBGA warpage deformation in the POP, setted four design factors, such as the mold temperature, melt temperature, injection pressure and injection time , find out the minimum warpage combination of design and critical design factors affecting the warpage. Then the factors are ranked according to the degree of the impact of the above experiments. The best combination of levels for these factors is getted, the stacked package parameter is optimized. Experiments show that the value of warpage decreased significantly.


Sign in / Sign up

Export Citation Format

Share Document