Nobody downloaded yet

Effects of flicker on reading comfort (part 2) - Essay Example

Comments (0) Cite this document
Summary
Effects of Flicker on Reading Comfort Abstract Objective: The purpose of this study is to investigate the effects of moderate rate frequency of flicker from LEDs light on reading comfort. The study hypothesises that when a reading material is illuminated by LEDs lamp powered on AC, produced flicker may influence reading comfort…
Download full paperFile format: .doc, available for editing
GRAB THE BEST PAPER98.3% of users find it useful
Effects of flicker on reading comfort (part 2)
Read TextPreview

Extract of sample "Effects of flicker on reading comfort (part 2)"

Download file to see previous pages Two types of questionnaire, an initial questionnaire to identify the previous experience of discomfort and a symptom questionnaire were used. Results: The results indicated insignificant difference between discomforts caused by sustained reading and using computer. The condition of 50 Hz induced the greatest impact on reading comfort compared to DC. The most affected symptoms of discomfort were vision discomfort followed by eyestrain, blurred vision and headache. The mean difference of 75 Hz, 100 Hz and 140 Hz compared to DC lighting situation was not significant. Conclusion: The study shows that reading under 100 Hz LEDs light has no different effects on comfort than reading under LEDs light powered on DC. In addition, the study shows insignificant difference between discomfort induced by reading and by computer use in terms of incidence and nature. Further studies are required with larger and balanced sample size, different direction of illumination and longer period of reading time to address the possible limitations of this experiment. Methods Participants Students of the University of New South Wales (UNSW) were invited by posters and emails to participate in the experiment. Participants who completed the experiment received a nominal reward. The inclusion criteria were good binocular vision, lack of ocular and systemic abnormalities that possibly influence reading ability, and age had to be between 19 to 30 years old since light sensitivity often higher at this age group. The exclusion criteria were any known case of migraine or photosensitive epilepsy. A total number of 18 students were recruited (2 male and 16 female), all signed an informed consent form prior commencing the study. Ethics and the study protocol were reviewed and approved by the UNSW Human Research Ethics Advisory (UNSW HREA) Panel. Design and Procedure In a double masked randomized crossover study, discomfort symptoms were self-reported by using two types of questionnaires; an initial questionnaire and symptoms questionnaire. The participants had to attend five reading sessions under LED light, but with different rate of flicker in each session. They were randomly assigned to the sessions by Latin squares, and the reading sessions had to be separated by at least one day. At the beginning of the first session, the initial questionnaire had to be completed, whereas symptom questionnaire had to be filled immediately at the beginning and at the end of every session to evaluate reading discomfort. During the reading sessions, the ambient light was turned off, and the room was completely dark, so the only light source was that installed in lighting booth. The booth was positioned on a table, and a “twilight” novel was placed inside the booth directly under the light. Each subject had to read a part from the book on every session for 30 minutes with the habitual glasses. Comfortable sitting was enhanced by providing an adjustable chair placed in front of the booth to read with habitual reading posture. Questionnaires Two types of questionnaires were used in the study: the initial questionnaire and the symptom questionnaire. The initial questionnaire was designed to examine the previous experience of discomfort related to reading and computer use and to detect unknown cases of photosensitive epilepsy or migraine. The first part of the questionnaire was ...Download file to see next pagesRead More
Cite this document
  • APA
  • MLA
  • CHICAGO
(“Effects of flicker on reading comfort (part 2) Essay”, n.d.)
Retrieved from https://studentshare.org/family-consumer-science/1404799-effects-of-flicker-on-reading-comfort-part
(Effects of Flicker on Reading Comfort (part 2) Essay)
https://studentshare.org/family-consumer-science/1404799-effects-of-flicker-on-reading-comfort-part.
“Effects of Flicker on Reading Comfort (part 2) Essay”, n.d. https://studentshare.org/family-consumer-science/1404799-effects-of-flicker-on-reading-comfort-part.
  • Cited: 0 times
Comments (0)
Click to create a comment or rate a document

CHECK THESE SAMPLES OF Effects of flicker on reading comfort (part 2)

Part 2

...will caused these impairments for a reason that is too profound…to understand…but it is for the best” (qtd. in Ecker, 2010, p.12). In some parts of the South-East Asia, particularly the Philippines, autism, or any other disability, is regarded as a “blessing in disguise.” The differences in cultural views regarding autism influences how each culture diagnose and aim to intervene with the disorder. References Autism Research Institute. (n.d.). Available at http://www.autism.com/ Autism Society. (n.d.). Available at http://www.autism-society.org/ Ecker, J. (2010). Cultural belief systems in autism and the effects on families. Retrieved from Columbia University AcademicCommons....
3 Pages(750 words)Term Paper

PART 2

...if her husband’s HIV status is known by the public. In some parts of the world, certain medical conditions are regarded as a taboo and punishment from God hence may lead to discrimination (Cordess, 2001). In a nutshell, breach of patient’s medical records or information may have negative effects to the health care provider, patient, as well as other family members. References Banker, E. A. (2006). Institutional Review Board: Management and Function. New York, USA: Jones and Bartlett Learning. Cordess, C. (2001). Confidentiality and Mental Health. New York, USA: Jessica Kingsley Publishers. Assignment 2 Potential causes of breach of confidentiality and assessment Confidentiality of...
4 Pages(1000 words)Term Paper

The Home Environment and its Effect on the Older People

...and it is the task of an occupational therapist as well as other healthcare services personnel to ensure that as much as possible, the older individuals in a community should be able to sustain the best quality of life and occupational performance that can possibly be achieved. The effective design of housing, modifications of existing dwellings to support the elderly and the use of assistive aids generally do enhance the occupational performance of older individuals. A so called supportive home environment for the older persons will have the right levels of ambient lighting that does not flicker or produce glare that can interfere with the occupational activities of a senior person (Andes, 2004,...
41 Pages(10250 words)Dissertation

Holistic Comfort

...should just not be geared towards the treatment of the physical ailment but should also understand the physiological needs of a patient. From the medical literature there are several modes of intervention where by the nurses suppress the adverse effects of discomforts such as nausea, fatigue, and pain (Katherine, 1992. pp 2) but they need to be open minded and know how to deal with distress from the patients perspective. There are four key areas in which patients need to experience comfort. The first area constitutes of the environment around them which includes the temperature, presence or absence of noise, and other external factors (Watson, 2002. pp 30). The environment if...
5 Pages(1250 words)Essay

Prof 2 part 2

...there are so-called risk factors to DS incidences. DS is a condition that needs to be extensively studied not only so that it can be totally eliminated but also to help those born with this genetic defects live the closest to normal existence as possible. The purpose of this paper is to study the causes and effects of Down syndrome including its medical consequences and the accepted appropriate clinical, sociological, nutritional and psychological approaches in dealing with DS victims. References Used For This Study In undertaking the study of this paper, the writer used several books, articles and other references to meet its objective, which is to understand the causes of Down syndrome, anticipate its medical...
10 Pages(2500 words)Essay

Effects of flicker on reading comfort

...Effects of Flicker on Reading Comfort Background 1. Reading and Visual Discomfort A number of studies investigated visual discomfort, which interchanges sometimes with visual fatigue. Lambooij, Ijsselsteijn, and Heynderickx1 pointed out that although both terms are linked; visual discomfort is often corresponded with subjective symptoms such as headache and sore eyes, while visual fatigue usually refers to the declined in the visual system performance that can be measured objectively. They enclosed both terms in a single diagnostic term ‘asthenopia’. Asthenopia can be perceived as localised pain around the eyes, or diffuse like headache and neck ache....
16 Pages(4000 words)Essay

Part 2

...Part 2 What was life like in America during Prohibition? What groups did prohibition affect most, and why? The prohibition was a nationwide ban on the manufacture and sale of alcohol. It took place between 1919 and 1933 and its main aim was to make the citizens of US stop using money for alcohol but invest it elsewhere like in dairy products. Life during this period became somewhat chaotic because crime started rising and use of narcotics and other hard drugs also increased. Families started inculcating wrong values to their children since the parents used to drink alcohol and the drugs in their homes infront of their children. America became even worse with the ban in place. 2. Describe...
1 Pages(250 words)Essay

DISCUSSION BOARD PART 2-2

...three challenges earlier stated, reducing any bias in the study. A successful student doctoral study chair relationship is critical. Building a relationship with the chair requires a student first to communicate regularly through emails, especially during the first few weeks after approval. Checking with the chair with the preferred means of communication early will spare the student form frustrations in the future. Good communication will result from understanding the best means and actually communicating through it. For instance, acknowledging receipt to emails or to assignments promptly will motivate the lecturer to work with the student. The students need to build up knowledge about the chair through reading his...
2 Pages(500 words)Essay

Unit 2 Part 2

... that do happen occur in the right way at the stipulated time. All the controls laid in a firm ensures that all the objectives are clear, and the necessitated resources are available to achieve the objectives in good time. Additionally, it declines wastage of resources. Feedback controls aid in improving the plans since the areas of weakness are detected easily. In the end, it improves the efficiency and effectiveness of the organization, acting as a basis of future operations. Reference Seal, W., & Mattimoe, R. (2014). Controlling strategy through dialectical management. Management Accounting Research. ... Process and Strategic Management Affiliation Controlling and strategic planning The controlling function of management entails four...
1 Pages(250 words)Admission/Application Essay

Part 2

...Pat 2 Introduction Expansive middle residents with a palate for extravagance and beauty occupied Antioch, which was a vital agricultural and commercial center of the Roman Empire and economic success. Villas, in this region, were often opulently decorated with spectacular wall frescoes and floor mosaics like the medallion of the wine god Bacchus (the Greek Dionysos). This piece of art, even though currently displayed on the Museum’s wall, was initially displayed at the entrance hall of a Roman villa as part of a much larger floor pavement. At first, I thought that the Floor Mosaic Fragment Depicting Bacchus was merely created through stitch or other form of material, but I discovered that this...
5 Pages(1250 words)Essay
sponsored ads
We use cookies to create the best experience for you. Keep on browsing if you are OK with that, or find out how to manage cookies.

Let us find you another Essay on topic Effects of flicker on reading comfort (part 2) for FREE!

Contact Us