scholarly journals Effect of reading with a mobile phone and text on accommodation in young adults

2021 ◽  
Author(s):  
Xintong Liang ◽  
Shifei Wei ◽  
Shi-Ming Li ◽  
Wenzai An ◽  
Jialing Du ◽  
...  
Keyword(s):  
Young Adults ◽  
Mobile Phone ◽  
Mobile Phones ◽  
Decay Time ◽  
Task Groups ◽  
Significant Difference ◽  
Refractive Correction ◽  
The Mean ◽  
Accommodative Lag ◽  
Near Work

Abstract Purpose To investigate the effects of reading with mobile phone versus text on accommodation accuracy and near work-induced transient myopia (NITM) and its subsequent decay during near reading in young adults with mild to moderate myopia. Methods The refractions of 31 young adults were measured with an open-field autorefractor (WAM-5500, Grand Seiko) for two reading tasks with a mobile phone and text at 33 cm. The mean age of the young adults was 24.35 ± 1.80 years. The baseline refractive aspects were determined clinically with full distance refractive correction in place. The initial NITM and its decay time and accommodative lag were assessed objectively immediately after binocularly viewing a mobile phone or text for 40 min. Results The mean ± standard deviation (SD) initial NITM magnitude was greater for reading with text (0.23 ± 0.26 D) than for reading with mobile phone (0.12 ± 0.17 D), but there was no significant difference between the two reading tasks (p = 0.082). The decay time (median, first quartile, and third quartile) was 60 s (16, 154) and 70 s (32, 180) in the phone task and text task groups, respectively. There was also no significant difference in the decay time between the two reading types in general (p = 0.294). The accommodative lags of text tasks and mobile phones tasks were equivalent (1.27 ± 0.52 D vs 1.31 ± 0.64 D, p = 0.792). Conclusion There were no significant differences in accommodative lags and the initial NITM and its decay time between reading with a mobile phone and text in young adults.

OBSERVATIONS OF TOTAL SERUM BASE IN CHILDREN AND YOUNG ADULTS BY A CONDUCTIVITY METHOD

PEDIATRICS ◽  
1949 ◽  
Vol 4 (6) ◽  
pp. 805-809
Author(s):  
W. M. KELSEY ◽  
L. B. LEINBACH
Keyword(s):  
Young Adults ◽  
Total Serum ◽  
Age Group ◽  
Conductivity Method ◽  
Normal Children ◽  
Significant Difference ◽  
Children And Young Adults ◽  
The Mean ◽  
Standard Deviations

Values for total serum base in 96 normal children under 12 years of age as determined by the conductivity method fell between 143 to 160.5 mEq./l. The mean was 153. Standard deviations for each age group are given. The values in 73 normal persons above the age of 12 varied from 142 to 160.5 mEq./l. The mean was 147 mEq./l. A statistically significant difference between the total serum base in children and adults was found.

Exploring Personal Mobile Phones and Digital Display Systems to Support Indoor Navigation by Formative Study Methods

2010 ◽  
Vol 1 (3) ◽  
pp. 32-50 ◽  
Author(s):  
Faisal Taher ◽  
Keith Cheverst ◽  
Mike Harding
Keyword(s):  
Mobile Phone ◽  
Mobile Phones ◽  
Support Services ◽  
Digital Technology ◽  
Research Study ◽  
Indoor Navigation ◽  
Digital Display ◽  
Significant Difference ◽  
Display Systems ◽  
Access Services

A significant difference exists between wayfinding support services available in outdoor and indoor locations. Users in outdoor locations can access services like Google Maps via a mobile phone and in-car GPS, which allows them to examine unknown locations before arrival as well as receive assistance en-route. In contrast, there is relatively little digital wayfinding support for users in indoor locations, where users are limited to using in-building signage or asking for directions. However, advances in pervasive digital technology allow new possibilities and make this topic increasingly subject to research study. This paper describes three separate formative studies involving 24 participants using personal mobile phones, a situated display deployment and a Person Locator Kiosk. The authors present their findings by gaining feedback and insights from users to develop useful and usable wayfinding support for visitors in an in-building environment.

Elderhostelers and College Women Coping with Nuclear Threat: A Comparative Study of Thoughts and Actions about Nuclear War

1988 ◽  
Vol 62 (2) ◽  
pp. 619-625 ◽  
Author(s):  
S. Viterbo McCarthy
Keyword(s):  
Young Adults ◽  
College Women ◽  
World View ◽  
Adult Women ◽  
Nuclear War ◽  
Young Adult Women ◽  
Two Samples ◽  
Significant Difference ◽  
The Mean ◽  
Striking Contrast

To relate experiences to thoughts and actions about the nuclear predicament, 49 elderhostelers and 54 college women were compared on their responses to the Nuclear Activism Questionnaire and scores on five areas of the Survey of Feelings about Nuclear War. Tests were group-administered in 30 min. to 49 late adults and 54 young adult women who volunteered to participate and responded anonymously. Analysis showed a significant difference in the mean activism scores of the two groups; elderhostelers were significantly more antinuclear than the young adults. For the two samples, among many similarities on the survey was one striking contrast: if a difference in the tendency to deny threat to self and to project threat on others is indicative of defensiveness, then these elderhostelers were far less defensive than the young adults. From clues about coping strategies noted here, we recommend further inquiry about the paradigm, belief, or world view directing the mode of thought that accounts for activism scores, with larger groups of subjects.

scholarly journals Home Videos as a Cost-Effective Tool for the Diagnosis of Paroxysmal Events in Infants: Prospective Study (Preprint)

2018 ◽  
Author(s):  
Lu-Lu Huang ◽  
Yang-Yang Wang ◽  
Li-Ying Liu ◽  
Hong-Ping Tang ◽  
Meng-Na Zhang ◽  
...  
Keyword(s):  
Diagnostic Accuracy ◽  
Mobile Phone ◽  
Mobile Phones ◽  
Cost Savings ◽  
Cost Effective ◽  
Educational Background ◽  
Hospital Level ◽  
Home Videos ◽  
Online Consultation ◽  
The Mean

BACKGROUND The diagnosis of paroxysmal events in infants is often challenging. Reasons include the child’s inability to express discomfort and the inability to record video electroencephalography at home. The prevalence of mobile phones, which can record videos, may be beneficial to these patients. In China, this advantage may be even more significant given the vast population and the uneven distribution of medical resources. OBJECTIVE The aim of this study is to investigate the value of mobile phone videos in increasing the diagnostic accuracy and cost savings of paroxysmal events in infants. METHODS Clinical data, including descriptions and home videos of episodes, from 12 patients with paroxysmal events were collected. The investigation was conducted in six centers during pediatric academic conferences. All 452 practitioners present were asked to make their diagnoses by just the descriptions of the events, and then remake their diagnoses after watching the corresponding home videos of the episodes. The doctor’s information, including educational background, profession, working years, and working hospital level, was also recorded. The cost savings from accurate diagnoses were measured on the basis of using online consultation, which can also be done easily by mobile phone. All data were recorded in the form of questionnaires designed for this study. RESULTS We collected 452 questionnaires, 301 of which met the criteria (66.6%) and were analyzed. The mean correct diagnoses with and without videos was 8.4 (SD 1.7) of 12 and 7.5 (SD 1.7) of 12, respectively. For epileptic seizures, mobile phone videos increased the mean accurate diagnoses by 3.9%; for nonepileptic events, it was 11.5% and both were statistically different (P=.006 for epileptic events; P<.001 for nonepileptic events). Pediatric neurologists with longer working years had higher diagnostic accuracy; whereas, their working hospital level and educational background made no difference. For patients with paroxysmal events, at least US $673.90 per capita and US $128 million nationwide could be saved annually, which is 12.02% of the total cost for correct diagnosis. CONCLUSIONS Home videos made on mobile phones are a cost-effective tool for the diagnosis of paroxysmal events in infants. They can facilitate the diagnosis of paroxysmal events in infants and thereby save costs. The best choice for infants with paroxysmal events on their initial visit is to record their events first and then show the video to a neurologist with longer working years through online consultation.

scholarly journals Pengaruh Budaya dan Lokasi Terhadap Persepsi dan Penggunaan Telefon Bimbit di Tempat-Tempat Awam: Satu Analisis Perbandingan Antara Beberapa Negara

2017 ◽  
Vol 10 (1) ◽  
Author(s):  
Siti Harnani Amir Hushin ◽  
Hasrina Mustafa ◽  
Bahiyah Omar
Keyword(s):  
Social Interaction ◽  
University Students ◽  
Mobile Phone ◽  
Mobile Phones ◽  
Significant Influence ◽  
Public Transport ◽  
Interaction Theory ◽  
Public Places ◽  
Geographical Factors ◽  
Significant Difference

This study aims to compare the level of perception of using mobile phones at public places among users of four different countries; Malaysia, Indonesia, China and Iran from the perspective of Social Interaction Theory. A survey was conducted on 100 university students from each country that makes up a sample of 400 respondents.  The findings of the study show 1) a significant difference in the perception of mobile phone and SMS usage in public places among respondents from different countries. Unlike Malaysian, Indonesian and Chinese respondents, the results of the study show that Iranian respondents are not too disturbed by the usage of mobile phones at public places. 2) The study also finds that Malaysian and Indonesian respondents seldom use mobile phone in public places, and that Chinese respondents often use mobile phone in public transport (i.e: bus). Meanwhile, Iranian respondents use mobile phone the most in four identified places – the supermarket, bus, pedestrian walkway and restaurant. 3) Most of the respondents in each category, however, prefer to use mobile phone – for making calls and SMS – in multi focused gathering compared to fully focused ones. The study concludes that cultural and geographical factors exert significant influence on the usage and perception of using mobile phone at public places. 

scholarly journals An Experimental Investigation of the Impact of Electromagnetic Radiations Emitted from Mobile Phone on General Health, pH, Flow Rate and Electrolytes Concentrations of Saliva in Female Adults

2018 ◽  
Author(s):  
Etimad Alattar ◽  
Khitam Elwasife ◽  
Eqbal Radwan ◽  
Hadeer Abu Warda ◽  
Mohammed Abujami
Keyword(s):  
Mobile Phone ◽  
Mobile Phones ◽  
Flow Rate ◽  
General Health ◽  
Control Group ◽  
Inclusion Criteria ◽  
Group I ◽  
Significant Difference ◽  
The Impact ◽  
Electromagnetic Radiations

During the recent years, there has been a tremendous increase in use of mobile phones which resulted in an increase of the exposure to electromagnetic radiations in our life. Human saliva is considered as a potential source of biomarkers to monitor changes that occur under pathological conditions. The main objective of the current experiment was to determine the effect of mobile phone radiation on general health, electrolytes and salivary function among Islamic University students who use mobile phones. A questionnaire was designed and applied to 167 healthy and 36 deaf female students to select cases whose meeting the inclusion criteria. A total of 103 students who met the inclusion criteria were included to investigate the influence of mobile phone radiations on their general health. For assessment of salivary parameters, a total of 55 students were chosen and classified into three groups. Group I was the control group, which included 17 deaf students who did not use the mobile phone at all. Group II was healthy students who have mobile phone for less than 5 years. Group III was healthy students who have mobile phone for 5 years or more. Descriptive data that included mean, standard deviation, and percentages was calculated for each group. Multiple group comparisons were made by one-way analysis of variance (ANOVA) followed by Tukey test for pairwise comparisons. Categorical data were analyzed by Chi square (&chi;2) test. For all the tests, a P value of 0.05 or less was considered for statistical significance. The results showed that the participants who use mobile phone had several problems in their health including dry mouth, bad odor from mouth, drooling of saliva, as well as ear and eye pain. The majority of the participants who use mobile phone complained of headache, anxiety, insomnia and forgetfulness as compared to deaf participants. Also, the study showed that there was no significant difference between salivary pH in all tested groups. Regarding to salivary flow rate, the differences were no significant in all tested groups. In addition, this study has also shown that there was significant difference between the salivary Na+ and K+ levels of the three groups. Salivary level of Na+ and K+ were significantly lower in mobile phone users when compared to non users of mobile phone.

scholarly journals Is exposure to personal music players a confounder in adolescent mobile phone use and hearing health studies?

2018 ◽  
Vol 46 (11) ◽  
pp. 4527-4534 ◽  
Author(s):  
Geza Benke ◽  
Christina Dimitriadis ◽  
Berihun M. Zeleke ◽  
Imo Inyang ◽  
Dean McKenzie ◽  
...  
Keyword(s):  
Mobile Phone ◽  
Mobile Phones ◽  
Pure Tone ◽  
Hearing Threshold ◽  
Pure Tone Audiometry ◽  
Mobile Phone Use ◽  
Hearing Thresholds ◽  
Significant Difference ◽  
Health Studies ◽  
The Difference

Objective This study was performed to determine whether exposure to personal music players (PMPs) in the immediate morning prior to hearing testing confounds the association between mobile phone use and hearing thresholds of adolescents. Design In this cohort study of cognitive function in year 7 students (median age 13 years, range 11–14), information regarding the weekly use of mobile phones and the use of PMPs was assessed by a questionnaire. Pure-tone audiometry was used to establish hearing thresholds for all participants. Results Among a cohort of 317 adolescents (60.9% females), 130 were unexposed to PMP use while 33 were exposed to PMP use in the morning prior to hearing testing. No statistically significant difference in hearing threshold shifts was found between adolescents who were and were not exposed to PMP use prior to hearing testing. Likewise, the difference in the use of mobile phones according to the PMP use status was not statistically significant. Conclusion Exposure to PMPs prior to hearing testing did not introduce confounding in the present study of mobile phone use and hearing loss among adolescents.

scholarly journals ACHIEVING CLOSE RANGE PHOTOGRAMMETRY WITH NON-METRIC MOBILE PHONE CAMERAS

2021 ◽  
Vol 47 (2) ◽  
pp. 71-79
Author(s):  
Joseph Olayemi Odumosu ◽  
Oluibukun Gbenga Ajayi ◽  
Victor Chukwuemeka Nnam ◽  
Samuel Ajayi
Keyword(s):  
Mobile Phone ◽  
Mobile Phones ◽  
Statistical Tests ◽  
Bundle Adjustment ◽  
Least Square ◽  
Adjustment Process ◽  
Current Increase ◽  
Close Range Photogrammetry ◽  
Significant Difference ◽  
Close Range

Close range photogrammetry (CRP) has gained increasing relevance over the years with its principles and theories being applied in diverse applications. Further supporting this trend, the current increase in the wide spread usage of mobile phones with high resolution cameras is expected to further popularize positioning by CRP. This paper presents the results of an experimental study wherein two (2) non-metric mobile phone cameras have been used to determine the 3-D coordinates of points on a building by using the collinearity condition equation in an iterative least square bundle adjustment process in MATLAB software environment. The two (2) mobile phones used were Tecno W3 and Infinix X509 phones with focal lengths of 5.432 mm and 8.391 mm respectively. Statistical tests on the results obtained shows that there is no significant difference between the 3-D coordinates obtained by ground survey and those obtained from both cameras at 99% confidence level. Furthermore, the study confirmed the capability of non-metric mobile phone cameras to determine 3D point positions to centimeter level accuracy (with maximum residuals of 11.8 cm, 31.0 cm, and 5.9 cm for the Tecno W3 camera and 14.6 cm, 16.1 cm and 1.8 cm for the Infinix X509 camera in the Eastings, Northings and Heights respectively).

scholarly journals Global Outreach of a Locally-Developed Mobile Phone App for Undergraduate Psychiatry Education

2015 ◽  
Vol 1 (1) ◽  
pp. e3
Author(s):  
Melvyn WB Zhang ◽  
Christopher CS Cheok ◽  
Roger CM Ho
Keyword(s):  
Mobile Phone ◽  
Mobile Phones ◽  
User Perspective ◽  
Web Based ◽  
Psychiatry Education ◽  
App Store ◽  
Significant Difference ◽  
Chi Squared ◽  
User Perspectives ◽  
Different Cultures

Background Over the past decade, there have been massive developments in both Web-based and mobile phone technologies. Mobile phones are well accepted by students, trainees, and doctors. A review of the current literature has identified the following specialties that have used mobile phones in education: pediatrics, ophthalmology, nephrology, plastic surgery, orthopedics, pharmacology, and urology. However, to date, there are no published papers examining the application of the latest mobile phone technologies for psychiatry education internationally. Objectives The main objectives of this study are (1) to determine the feasibility and receptiveness of a locally-developed psychiatry mobile phone app and user perspectives (both quantitative and qualitative) towards it, and (2) to determine the receptiveness of a locally-developed app for psychiatry education internationally. Methods A Web-based app that contained textbook contents, videos, and quizzes was developed using HTML5 technologies in 2012. Native apps were subsequently developed in 2013. Information about the apps was disseminated locally to Singaporean medical students, but the respective native apps were made available on the app stores. A user perspective survey was conducted locally to determine student’s perception of the app. Results From the inception of the app until the time of preparation of this manuscript, there have been a cumulative total of 28,500 unique visits of the responsive HTML5 Web-based mobile phone app. There have been a cumulative total of 2200 downloads of the Mastering Psychiatry app from the Apple app store and 7000 downloads of the same app from the Android app store. The initial user perspective survey conducted locally highlighted that approximately a total of 95.2% (177/186) of students felt that having a psychiatry mobile phone app was deemed to be useful. Further chi-squared analysis demonstrated that there was a significant difference between males and females in their perception of having textbook contents in the mobile phone app (χ24=12.9, P=.0012). Conclusions To the best of our knowledge, this is the first study to demonstrate the feasibility and global acceptance of a local, self-designed educational app for psychiatry education. Whilst the current research has managed to demonstrate the feasibility and acceptance of such an app, future studies would be warranted to look, in-depth, into whether there are cultural differences in terms of perceptions towards having such an app in psychiatry and what contents different cultures and cohorts of students might want within an app.

scholarly journals Does the Excessive use of Mobile Phones in Young Adults Reflect an Emerging Behavioral Addiction?

2012 ◽  
Vol 46 (4) ◽  
pp. 177-182 ◽  
Author(s):  
Debasish Basu ◽  
Natasha Kate ◽  
Ritu Nehra ◽  
Sandeep Grover ◽  
Nitasha Khehra
Keyword(s):  
Young Adults ◽  
Mobile Phone ◽  
Mobile Phones ◽  
Substance Dependence ◽  
Behavioral Addiction ◽  
Modern Life ◽  
Mobile Phone Use ◽  
Item Questionnaire ◽  
Icd 10 ◽  
Cage Questionnaire

ABSTRACT Background and objective Mobile phones have become an essential part and parcel of modern life. Some of the studies have shown potentially adverse consequences of excessive mobile phone use. Aim of this study was to explore the pattern of mobile phone use among young adults and evaluate the mobile phone use pattern on the substance dependence criteria and assess the adverse consequences of mobile phone use. Materials and methods A 46-item questionnaire based on the ICD-10 substance dependence syndrome criteria, CAGE questionnaire and keeping the possible adverse consequences of excessive use in mind was given to the participants. Results A total of 212 young adults with a mean age of 21.6 years participated in the study. About one-third of the participants met three or more of the ICD-10 diagnostic criteria for substance dependence and more than half (57.1%) fulfilled two or more items on the CAGE questionnaire. Those who fulfilled the dependence criteria spent more time per day on the mobile phone and more frequently had harmful consequences on various aspects of life. Conclusion Excessive mobile phone use is associated with adverse consequences in different spheres of life and some subjects use it in dependent pattern. How to cite this article Nehra R, Kate N, Grover S, Khehra N, Basu D. Does the Excessive use of Mobile Phones in Young Adults Reflect an Emerging Behavioral Addiction? J Postgrad Med Edu Res 2012;46(4):177-182.

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