Reading Influence of Letter Size, Display Quality, and Anticipation

1999 ◽  
pp. 379-382
Author(s):  
C. C. Krischer ◽  
J. Zihl ◽  
R. Meissen
Keyword(s):  
Display Quality ◽  
Letter Size ◽  
Size Display

Evaluation von Gesundheitsförderungsprogrammen - Methodische Stolpersteine und pragmatische Empfehlungen

2000 ◽  
Vol 8 (1) ◽  
pp. 18-24 ◽  
Author(s):  
Gert Kaluza ◽  
Hans-Henning Schulze
Keyword(s):  
Effect Size ◽  
Power Analysis ◽  
Prävention Und Gesundheitsförderung ◽  
Size Display ◽  
Methodische Probleme

Zusammenfassung. Die Evaluation von Interventionen zur Prävention und Gesundheitsförderung stellt ein zentrales Aufgabenfeld der gesundheitspsychologischen Forschung dar. Häufige methodische Probleme entsprechender Evaluationsstudien betreffen 1. Ausgangswert-Unterschiede bei nicht randomisierten Studiendesigns, 2. Abhängigkeit von Beobachtungen bei Gruppeninterventionsstudien, 3. Kapitalisierung von Irrtumswahrscheinlichkeiten aufgrund einer Vielzahl von abhängigen Variablen und 4. Beurteilung der praktischen Relevanz statistisch signifikanter Interventionseffekte. Zu deren pragmatischer Lösung werden u.a. 1. die Anwendung kovarianzanalytischer Auswertungsstrategien, 2. die Berechnung von Intraclass-Korrelationen und ggf. eine Datenauswertung auf der Ebene der Gruppenmittelwerte, 3. eine Reduktion der Anzahl der abhängigen Variablen mittels Hauptkomponentenanalyse sowie eine Alpha-Adjustierung unter Berücksichtigung der Teststärke (“compromise power analysis”) und 4. die Umrechnung gängiger Effektstärken in prozentuale Erfolgsraten (“binomial effect size display”) empfohlen.

scholarly journals Full-chain modeling and performance analysis of integral imaging three-dimensional display system

2020 ◽  
Vol 16 (1) ◽  
Author(s):  
Ying Yuan ◽  
Xiaorui Wang ◽  
Yang Yang ◽  
Hang Yuan ◽  
Chao Zhang ◽  
...  
Keyword(s):  
Optimization Design ◽  
Quality Evaluation ◽  
Light Field ◽  
Three Dimensional ◽  
Display System ◽  
3D Display ◽  
Performance Characterization ◽  
Integral Imaging ◽  
Characterization Model ◽  
Display Quality

Abstract The full-chain system performance characterization is very important for the optimization design of an integral imaging three-dimensional (3D) display system. In this paper, the acquisition and display processes of 3D scene will be treated as a complete light field information transmission process. The full-chain performance characterization model of an integral imaging 3D display system is established, which uses the 3D voxel, the image depth, and the field of view of the reconstructed images as the 3D display quality evaluation indicators. Unlike most of the previous research results using the ideal integral imaging model, the proposed full-chain performance characterization model considering the diffraction effect and optical aberration of the microlens array, the sampling effect of the detector, 3D image data scaling, and the human visual system, can accurately describe the actual 3D light field transmission and convergence characteristics. The relationships between key parameters of an integral imaging 3D display system and the 3D display quality evaluation indicators are analyzed and discussed by the simulation experiment. The results will be helpful for the optimization design of a high-quality integral imaging 3D display system.

47‐5: Distinguished Paper: Development of Reversed‐Dispersion Liquid‐Crystal Film to Improve the Display Quality of HDR‐IPS Panels

2021 ◽  
Vol 52 (1) ◽  
pp. 650-653
Author(s):  
Tatsuya Iwasaki ◽  
Yuki Nakamura ◽  
Toshikazu Sumi ◽  
Katsufumi Ohmuro ◽  
Masaaki Suzuki ◽  
...  
Keyword(s):  
Liquid Crystal ◽  
Crystal Film ◽  
Display Quality

scholarly journals Effects of Line Spacing on Reading Performance of Normally Sighted and Simulated Visually-Impaired Subjects: A Pilot Study Using Arabic Words

2017 ◽  
Vol 9 (8) ◽  
pp. 84
Author(s):  
Abdullah Z. Alotaibi
Keyword(s):  
Visually Impaired ◽  
Low Vision ◽  
Reading Rate ◽  
Reading Performance ◽  
White Background ◽  
Significant Difference ◽  
Line Spacing ◽  
The Difference ◽  
Letter Size ◽  
Visually Impaired Persons

The study aims to evaluate the role of line spacing during reading in normal and visually-impaired persons. A total of 225 normally-sighted participants with mean age of 23.7 years were asked to read Arabic sentences in a randomized order. Each Arabic sentence contains 7 lines with and without simulated cataract. The words were printed with black letters on white background to enhance contrast and fonts were in Times New Roman and of N12 letter size. The reading pages were placed on reading stand situated 25 cm away from the subject’s eyes. The simulated cataract was created by using a Bernell Cling Patch Occluder. This reduced the visual acuity of all subjects to 20/60. Each line of the text was separated by different line spacing namely: single space, 1.5, 2.0, 2.5, 3.0 and 4.0 which represents, 0.5 cm, 0.8 cm, 1.1 cm, 1.4 cm, 1.7 cm and 2.0 cm, respectively. The sheets were presented randomly and participants’ voices were recorded as they read under a controlled time. The tape was analysed later and reading rate was calculated. There was a significant difference (p<0.0001) in reading rates between the normal sighted persons and the visually impaired persons for all line spacing. Modifying the spacing between lines in prints had a significant impact (p<0.0001) on the reading rate of the visually impaired but not in normally-sighted persons (p˃0.05). Intermediate line spacing (2 and 2.5) increased the reading rate of the visually impaired persons significantly more (p<0.001) than other line spacing, but smaller or larger line spacing slowed their reading rate, significantly (p<0.001). The visually-impaired persons reported that they felt the difference in reading prints with larger line spacing as compared with normal sighted participants who did not. It is beneficial to adequately modify the line spacing in prints commonly read by low vision persons. For Arab subjects the optimum line spacing to significantly improve reading in the visually impaired should range from 0.8 to 1.1 cm. This finding may be a useful for publishers of Arab prints targeting the visually impaired persons. Thus, the implication of the study in the field of health is that by establishing the least common line spacing visualized optimally among normal and simulated visually impaired persons would be fixed as default line spacing for Arab printing to achieve better reading performance.

scholarly journals Utilizing a Facebook closed group for EFL e-learning environment: Students’ views

2021 ◽  
Vol 8 (3) ◽  
pp. 1026-1044
Author(s):  
Martha Nandari Santoso
Keyword(s):  
Learning Environment ◽  
Foreign Language ◽  
Online Classes ◽  
Online Class ◽  
Face To Face ◽  
Closed Group ◽  
E Learning ◽  
Group A ◽  
Display Quality

This study was conducted out of the researcher’s teaching reflection while teaching English as a foreign language (EFL) online class during the pandemic of COVID-19, a time when face-to-face courses had to be converted to online classes. Her choice of educational tool for her EFL e-learning environment utilized a Facebook closed group. Her experiences in utilizing a Facebook closed group for her EFL e-learning environment and the students’ views were the main topics of this study. Eighteen EFL freshmen participants were selected in this study. The researcher used data from a questionnaire with some closed and open-ended questions. The findings indicated that the students found the Facebook closed group a comfortable, practical, and useful e-learning environment. The students’ familiarity with the interface helped them to immediately focus on the class activities instead of learning how to use the tool. Most students viewed the Facebook closed group as positive for class interactions, creative work, opinions, and express feelings. A few dislike voices were related to the display quality of Facebook, the asynchronous and silent communication on Facebook. Accordingly, utilizing a Facebook closed group might be worth considering for learners who have not been adequately prepared with the technology for joining an online class. 

scholarly journals Functional Results and Photic Phenomena with new Extended-Depth-of-Focus Intraocular Lens

2019 ◽  
Author(s):  
Bert C. Giers ◽  
Ramin Khoramnia ◽  
Dorottya Varadi ◽  
Hannah Wallek ◽  
Hyeck Soo Son ◽  
...  
Keyword(s):  
Intraocular Lens ◽  
Functional Results ◽  
High Rate ◽  
Patient Questionnaire ◽  
Depth Of Focus ◽  
Reading Acuity ◽  
Extended Depth Of Focus ◽  
Electronic Reading ◽  
Letter Size ◽  
Reading Distance

Abstract Background: Evaluation of clinical and functional results of a new extended depth of focus intraocular lens (EDOF-IOL). Methods: Fourteen cataract patients (twenty-eight bilateral implantations) were assessed for uncorrected (UDVA) and corrected (CDVA) distance visual acuities; uncorrected (UNVA), distance-corrected (DCNVA) and best corrected (CNVA) near visual acuities; and uncorrected (UIVA) and distance-corrected (DCIVA) intermediate visual acuities - as well as binocular defocus curves. Photopic and mesopic contrast sensitivity was recorded. Reading acuity was evaluated using an electronic reading desk at fixed distances and at the patient’s preferred near and intermediate distances. Visual symptoms were assessed with a halo and glare simulator plus a patient questionnaire which also recorded quality of life. Results: Median postoperative monocular UDVA was 0.13logMAR (range -0.08 to 0.42logMAR), median CDVA was -0.01logMAR (range -0.20 to 0.22logMAR), median UIVA at 80 cm was -0.05logMAR (range -0.18 to 0.58logMAR) and median UNVA at 40 cm was 0.14logMAR (range -0.10 to 0.64logMAR). Binocular uncorrected reading acuity was 0.10logMAR at 40 cm and 0.11logMAR at 80 cm. Patients preferred a median intermediate reading distance of 62.8 cm over the predetermined 80 cm, which allowed them to read smaller letter size but did not improve reading acuity. Patients reported a high rate of spectacle independence and satisfaction in everyday life and little to no dysphotopsia. Conclusion: The Mini WELL Ready IOL provided good postoperative functional results at far and intermediate distances and improved the visual and reading acuity at reading distance. The lens caused little to no dysphotopsia.

Immersive reading in virtual and augmented reality environment

2021 ◽  
Vol ahead-of-print (ahead-of-print) ◽  
Author(s):  
Pei-Luen Patrick Rau ◽  
Jian Zheng ◽  
Zhi Guo
Keyword(s):  
Augmented Reality ◽  
Liquid Crystal Display ◽  
Reading Speed ◽  
Reading Performance ◽  
Multiple Choice Questions ◽  
Content Type ◽  
Head Mounted Displays ◽  
Virtual And Augmented Reality ◽  
Display Quality ◽  
Speed And Accuracy

Purpose This study aims to investigate “immersive reading,” which occurs when individuals read text while in a virtual reality (VR) or augmented reality (AR) environment. Design/methodology/approach In Experiment 1, 64 participants read text passages and answered multiple-choice questions in VR and AR head-mounted displays (HMDs) compared with doing the same task on liquid crystal display (LCD). In Experiment 2, 31 participants performed the same reading tasks but with two VR HMDs of different display quality. Findings Compared with reading on LCD as the baseline, participants reading in VR and AR HMDs got 82% (VR) and 88% (AR) of the information accurately. Participants tended to respond more accurately and faster, though not statistically significant, with the VR HMD of higher pixel density in the speed-reading task. Originality/value The authors observed the speed and accuracy of reading in VR and AR environments, compared with the reading speed and accuracy on an LCD monitor. The authors also compared the reading performance on two VR HMDs that differed in display quality but were otherwise similar in every way.

Influence of pixel electrode coupling capacitance on the display quality in TFT-LCD

2019 ◽  
Vol 34 (5) ◽  
pp. 459-464
Author(s):  
赵重阳 ZHAO Chong-yang ◽  
苏秋杰 SU Qiu-jie ◽  
缪应蒙 MIAO Ying-meng ◽  
高玉杰 GAO Yu-jie ◽  
王永垚 WANG Yong-yao ◽  
...  
Keyword(s):  
Coupling Capacitance ◽  
Display Quality
Sign in / Sign up

Export Citation Format

Share Document