Reliability of a basketball specific testing protocol for footwear fit and comfort perception

2011 ◽  
Vol 3 (3) ◽  
pp. 151-158 ◽  
Author(s):  
Wing Kai Lam ◽  
Thorsten Sterzing ◽  
Jason Tak-Man Cheung
Keyword(s):  
Testing Protocol ◽  
Comfort Perception ◽  
Footwear Fit

An extended model of the ISO-2631 standard to objectify the ride comfort in autonomous driving

Work ◽  
2021 ◽  
Vol 68 (s1) ◽  
pp. S37-S45
Author(s):  
Georg Burkhard ◽  
Tobias Berger ◽  
Erik Enders ◽  
Dieter Schramm
Keyword(s):  
Ride Comfort ◽  
Autonomous Driving ◽  
Extended Model ◽  
Measuring Point ◽  
Significant Difference ◽  
Comfort Perception ◽  
Simulator Study ◽  
Iso 2631

BACKGROUND: With the development of autonomous driving, the occupants’ comfort perception and their activities during the drive are becoming increasingly the focus of research. Especially in one of the first applications, a drive on a motorway, vertical dynamics play a major role. OBJECTIVE: To be able to robustly objectify ride comfort, better models need to be developed. Initial studies have shown, that the current ISO-2631 standard creates good results in the objectification and can be regarded as benchmark. METHODS: To increase the accuracy in objectification, an extended model with the occupants’ head as additional measuring point is introduced. Instead of the known frequency filters, weighting (k-factors) is used to differentiate possible excitations. For comparing the model with the ISO-2631, a simulator study with 5 excitations and 50 inattentive subjects is carried out. RESULTS: Evaluating the study with the ISO-2631, 3 out of 5 excitations indicate a significant difference between the occupant’s impression and the calculated comfort value. In comparison the extended model has no significant difference. CONCLUSION: The results further show, that inattentive occupants move their heads significantly more. By measuring accelerations of the head, the extended model creates equivalent or more accurate comfort values than the ISO-2631.

scholarly journals The visual categorization of production automotive seats on descriptors of comfort

Work ◽  
2021 ◽  
Vol 68 (s1) ◽  
pp. S69-S85
Author(s):  
Tugra Erol ◽  
Cyriel Diels ◽  
James Shippen ◽  
Dale Richards
Keyword(s):  
Hierarchical Clustering ◽  
Clustering Analysis ◽  
The Other ◽  
Visual Design ◽  
Hierarchical Clustering Analysis ◽  
Card Sorting ◽  
Design Attributes ◽  
Comfort Perception ◽  
Automotive Production

BACKGROUND: The role of appearance of automotive seats on perceived comfort and comfort expectancy has been acknowledged in previous research but it has not been investigated in depth. OBJECTIVE: To identify the effects of the appearance of production automotive seats, based on the hypothesis that visual design differentiations are affective in creating comfort expectations. The significance of the descriptors Sporty, Luxurious and Comfortable and the associated visual design attributes was of interest. METHOD: Images from 38 automotive production seats were used in an image-based card sorting app (qCard) with a total of 24 participants. Participants were asked to categorize the different seat designs varying from 1: least, to 9: most for all three descriptors.The resulting data was analyzed using hierarchical clustering analysis. RESULTS: The results indicated that the perceived Sporty, Luxurious and Comfortable were descriptor items that significantly differentiated seats with certain design attributes. It was found that for the Sporty perception the integrated headrest design and angular shapes were key. On the other hand, the Comfort perception was characterised by seating with a separate headrest and rounded seat back/cushion shapes. CONCLUSIONS: For seat design processes, the method enables a practical way to identify elements conveying Sporty, Comfortable and Luxurious perception.

School combo-desk comfort assessment: A method for weighing postural factors that affect the overall perceived comfort

Work ◽  
2021 ◽  
Vol 68 (s1) ◽  
pp. S47-S57 ◽  
Author(s):  
Rosaria Califano ◽  
Marianeve Cecco ◽  
Giuseppina De Cunzo ◽  
Nicoletta Napolitano ◽  
Emanuela Rega ◽  
...  
Keyword(s):  
Test Procedure ◽  
Body Part ◽  
Analysis Method ◽  
Statistical Correlations ◽  
Subjective Perceptions ◽  
General Law ◽  
Human Modelling ◽  
Comfort Perception ◽  
Postural Analysis ◽  
Digital Human

BACKGROUND: In recent years, a growing interest in ergonomics and comfort perception in secondary schools and universities can be detected, to go beyond the UNI-EN regulations and understanding how practically improve students’ perceived comfort during lessons. OBJECTIVE: This study aimed to analyse the (dis)comfort perceived by students while sitting in a combo-desk during lessons; it proposed a method for understanding and weighing the influence of postural factors on overall (dis)comfort. METHODS: Twenty healthy students performed a random combination of three different tasks in two sessions - listening, reading on a tablet and writing. Subjective perceptions were investigated through questionnaires, in which the expected and the overall comfort were evaluated; postural angles were gathered by processing photos through Kinovea® software and were used for the virtual-postural analysis, using a DHM (Digital Human Modelling) software; statistical analysis was used to investigate the influence of subjective comfort of each body part on the overall perceived comfort. RESULTS: The statistical correlations were used to perform an optimization problem in order to create a general law to formulate the overall comfort function, for each task, as a weighted sum of the comfort perceived in each body part. The test procedure, additionally, evaluated the influence on comfort over time. The results showed how the upper back and the task-related upper limb are the most influencing factors in the overall comfort perception. CONCLUSIONS: The paper revealed a precise and straightforward analysis method that can be easily repeated for other design applications. Obtained results can suggest to designers easy solution to re-design the combo-desk.

Reliability of the electronic early treatment diabetic retinopathy study testing protocol in children 7 to <13 years old

2003 ◽  
Vol 136 (4) ◽  
pp. 655-661 ◽  
Author(s):  
Susan A Cotter ◽  
Raymond H Chu ◽  
Danielle L Chandler ◽  
Roy W Beck ◽  
Jonathan M Holmes ◽  
...  
Keyword(s):  
Diabetic Retinopathy ◽  
Early Treatment ◽  
Testing Protocol

Specifications and testing of self-consolidating mortar designated for annular space grouting

2011 ◽  
Vol 38 (4) ◽  
pp. 422-432 ◽  
Author(s):  
Soo-Duck Hwang ◽  
Kamal H. Khayat ◽  
Richard Morin
Keyword(s):  
High Stability ◽  
Fine Sand ◽  
Underground Water ◽  
Experimental Program ◽  
Testing Protocol ◽  
Slump Flow ◽  
Nominal Size ◽  
Repair Mortars ◽  
Passing Ability ◽  
Good Filling

An experimental program was undertaken to evaluate the performance of self-consolidating mortar designed for filling small annular spaces for the rehabilitation of underground water line or sewage pipelines. The study also intended to establish a testing protocol to validate the workability of repair grout. All the investigated mixtures had good filling and passing ability with adequate retention of workability over 3 h. The repair mortars exhibited high stability with bleeding lower than 0.3% compared to 3% bleeding in the case of the reference neat cement grout. The reference grout had a lower plastic viscosity and higher slump flow values than the sanded repair grouts. A V-funnel with 30 mm × 30 mm overture and a flow cone with 12.7 mm overture are recommended for mortar made with concrete sand with a 5 mm nominal size and micro mortar with fine sand with a nominal size up to 3 mm, respectively.

Early Detection of Ototoxicity Using 1/6th-Octave Steps

2003 ◽  
Vol 14 (08) ◽  
pp. 444-450 ◽  
Author(s):  
Stephen A. Fausti ◽  
Wendy J. Helt ◽  
David S. Phillips ◽  
Jane S. Gordon ◽  
Gene W. Bratt ◽  
...  
Keyword(s):  
Early Detection ◽  
Early Identification ◽  
High Frequency ◽  
Detection Rate ◽  
Frequency Range ◽  
Test Protocol ◽  
Hearing Results ◽  
Testing Protocol ◽  
Initial Work ◽  
Auditory Research

The National Center for Rehabilitative Auditory Research has developed a protocol to provide early identification of ototoxicity for patients receiving ototoxic medications. The initial work involved patients with relatively good high-frequency hearing and resulted in the use of an individualized, sensitive frequency range separated by 1/16th-octave intervals. This protocol tested puretone frequencies at 1/6th-octave steps above 9 kHz, but only conventional audiometric frequencies were tested below 9 kHz. More recently, the testing protocol was expanded to include 1/6th-octave testing below 9 kHz. The primary question of interest was to determine whether adding 1/16th-octave test frequencies below 9 kHz would increase the ototoxicity detection rate for patients with poorer hearing. Results indicated 76 of the 210 (36.2%) ears that demonstrated initial ototoxic hearing change would have been missed or detected later if only conventional frequency testing was conducted. Therefore, for individuals with poorer hearing, expanding the use of the 1/16th-octave test protocol provides earlier identification of ototoxicity.

The Two-Point Discrimination Test – Time For a Re-Appraisal?

2004 ◽  
Vol 29 (5) ◽  
pp. 418-422 ◽  
Author(s):  
G. LUNDBORG ◽  
B. ROSÉN
Keyword(s):  
Nerve Repair ◽  
Test Time ◽  
Discrimination Test ◽  
Testing Technique ◽  
Testing Protocol

The two-point discrimination (2PD) test is the most frequently used test for the assessment of the sensory outcome after nerve repair. Here we focus on factors which explain the enormous and implausible variability in reported 2PD levels after nerve repair. We conclude that the 2PD testing technique is not at all standardized and that its use as the sole test for tactile gnosis recovery should be seriously questioned. Reports of 2PD results should always be accompanied by a detailed description of how the test was performed, especially with reference to the pressure applied and the testing protocol.

TB testing protocol

In Practice ◽  
2010 ◽  
Vol 32 (8) ◽  
pp. 414-415
Keyword(s):  
Testing Protocol
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