Mobile Handset Technology

2017 ◽  
pp. 97-133
Keyword(s):  
Cell Phone ◽  
Cell Phones ◽  
Base Station ◽  
Text Messages ◽  
Full Duplex ◽  
Small Cells ◽  
Analog To Digital ◽  
Mp3 Players ◽  
Radio Equipment ◽  
A Cell

Wireless phones which receive their signals from towers. A cell is typically the area (several miles) around a tower in which a signal can be received. Cell phones provide array of functions. Depending on the type of mobile phone we can store contact information, keep track of appointments and set reminders, Use the built-in calculator for simple math, send or receive e-mail, get information (news, entertainment, stock quotes) from the internet, play games, watch TV, send text messages, integrate other devices such as PDAs, MP3 players and GPS receivers. A cell phone is a full-duplex device meaning that both people on the call can talk at once. Division of a city into small cells allows extensive frequency reuse across a city, so that millions of people can use cell phones simultaneously. Cell phones operate within cells, and they can switch cells as they move around. Cells give cell phones incredible range. Someone using a cell phone can drive hundreds of miles and maintain a conversation the entire time because of the cellular approach. Each cell has a base station that consists of a tower and a small building containing the radio equipment. The cell phones have evolved from Analog to Digital which has been described in the previous chapter. This chapter describes the two main standards for mobile phones i.e. GSM and WAP.

scholarly journals Cellular Telephone Use: A Survey Of College Business Students

2008 ◽  
Vol 5 (4) ◽  
Author(s):  
Kay H. Braguglia
Keyword(s):  
Cell Phone ◽  
Cell Phones ◽  
Business Students ◽  
Study Time ◽  
Text Messages ◽  
Classroom Learning ◽  
Cell Phone Use ◽  
Cellular Telephones ◽  
Class Time ◽  
A Cell

Whether it is hand held, in a pocket, on a backpack, clipped to a belt, or hidden in a brief case or purse, college students and cellular telephones go together.  Communication with fellow students, professors, parents, and everyone else is just a click away. While walking across campus and down the halls of academic buildings, cellular telephones are being used.  This research questions in what ways do students use cellular telephones and does this use interfere with or assist in learning and college life?  This paper reports the results of a survey of undergraduate business students addressing this question.  The objectives were to determine: (1) how much time is spent using a cell phone and which phone features are used most frequently, (2) what students believe concerning the impact of cell phones on learning in the classroom and during study, (3) how often students are in contact with parents on a cell phone, and (4) how much do students pay for cell phone services.  The results indicate that 100% of the students own a cell phone.  Sixty-six percent of the students use voice calls most frequently and 30% use text messages most often.  A total of 55.8% of students report that they spend 3 hours or less on their cell phone daily and 44.8% spend four or more hours daily on their cell phones.  Over half of the students report that they have some interaction with their cell phones during class time for every class.  Seventy-seven percent state that this cell phone use seldom or never interferes with classroom learning. All of the students (100%) believe that they should be able to receive emergency information over a cell phone during class time.  Seventy-six percent believe that cell phones seldom or never assist in classroom learning.  However, students report that cell phone use impacts on study time outside of class.  Cell phone distractions during study time outside class was reported by 34.6% of the students as happening often or always and an additional 43.5% are sometimes distracted by cell phones during study time. Bad or upsetting news received over a cell phone before class impacts academic performance of 14.2% of the students often or always.  Thirty-five percent of the students talk to parents more than once a day and another 23.7% have contact on a daily basis. Therefore, 59.5% report that they have contact with their parents at least once a day.    Fifteen percent of the students pay over $100 per month for cell phone service, 28% pay from $75 to $100, 34% spend $51 to $75, and 14% spend $26 to $50 per month.  More than 90% of the students report that they have text messaging, calculator, clock, calendar, and appointment reminder on their cell phone.  Over 70% have the internet and games.  Over 60% have a camera and email.  Only 13% have an MP3 music player and 7% have an FM radio.  

Patient experience and satisfaction with telemedicine during COVID-19: a multi-institution experience (Preprint)

2021 ◽  
Author(s):  
Adrian Rodrigues ◽  
Jonathan S. Yu ◽  
Hriday Bhambhvani ◽  
Tyler Uppstrom ◽  
William Ricci ◽  
...  
Keyword(s):  
Patient Satisfaction ◽  
Cell Phone ◽  
Cell Phones ◽  
Multivariable Model ◽  
Assess Patient Satisfaction ◽  
High Satisfaction ◽  
Special Surgery ◽  
A Cell ◽  
Specific Factors ◽  
Hospital For Special Surgery

BACKGROUND The coronavirus disease 2019 (COVID-19) heralded an unprecedented increase in telemedicine utilization. OBJECTIVE Assess patient satisfaction with telemedicine during COVID-19 METHODS Telemedicine visit data were gathered from two separate institutions (Stanford Health Care (Stanford) and the Hospital for Special Surgery (HSS)). Patient satisfaction data from HSS were captured from a Press-Ganey questionnaire between April 19, 2020 and December 12, 2020, while the Stanford data was taken from a novel survey instrument that was distributed to all patients between June 22, 2020 and November 1, 2020. There were 60,550 telemedicine visits across 93 services at Stanford, each linked with a post-visit survey. At HSS, there were 66,349 total telemedicine visits with 7,348 randomly linked with a post-visit survey. The percentage of respondents who reported the highest possible likelihood to recommend score (“LTR top box percentage”) and mean overall visit scores were recorded. RESULTS Over 19 weeks, the LTR top box percentage at Stanford increased from 69.6% to 74.0% (p=.0002), and HSS showed no significant change across 35 weeks (p=.7100). LTR trend stability at Stanford was observed across 11 medical, four surgical, and five oncological services (p >.05). In the multivariable model, the use of a cell phone (aOR: 1.18; 95% CI: 1.12–1.23) and tablet (aOR: 1.15; 95% CI: 1.07–1.23) were associated with higher overall scores, while visits with interrupted connections (aOR: 0.49; 95% CI: 0.42–0.57) or help required to connect (aOR: 0.49; 95% CI: 0.42–0.56) predicted lower patient satisfaction. CONCLUSIONS We present the largest published description of patient satisfaction with telemedicine. We found high satisfaction with telemedicine encounters across multiple measures, and we identified a number of important telemedicine-specific factors that predict increased overall visit score. These include the use of cell phones or tablets, phone reminders, and connecting before the visit was scheduled to begin. Visits with poor connectivity, extended wait times, or difficulty being seen, examined, or understood by the provider were linked with reduced odds of high scores. Our results suggest that attention to connectivity and audio/visual definition will help optimize patient satisfaction with telemedicine encounters in the future. CLINICALTRIAL n/a

Design and Operation of a Cell Phone-Based Community Hazard Information Sharing System

2014 ◽  
pp. 211-225
Author(s):  
Mayayuki Shinohara ◽  
Akira Hattori ◽  
Shigenori Ioroi ◽  
Hiroshi Tanaka ◽  
Haruo Hayami ◽  
...  
Keyword(s):  
Information Sharing ◽  
Cell Phone ◽  
Local Community ◽  
Cell Phones ◽  
Information Service ◽  
Community System ◽  
A Cell ◽  
Local Residents ◽  
Conventional Cell ◽  
Conventional Systems

This paper presents a hazard/crime incident information sharing system using cell phones. Cell phone penetration is nearly 100% among adults in Japan, and they function as a telecommunication tool as well as a Global Positioning System (GPS) and camera. Open source software (Apache, Postfix, and MySQL) is installed on a system server, and together with the information service provided by Google Maps, are used to satisfy system requirements for the local community. Conventional systems deliver information to all people registered in the same block, even if an incident occurred far from their house. The key feature of the proposed system is that the distribution range of the hazard notification e-mail messages is determined by the geometrical distance from the incident location to the residence of each registered member. The proposed system applies not only to conventional cell phones but also smart phones, which are rapidly becoming popular in Japan. The new system functionality has been confirmed by a trial using members of the local community. System operation began after the successful trial and a training meeting for the local residents. System design, verification results, and operating status are described in this paper.

Design and Operation of a Cell Phone-Based Community Hazard Information Sharing System

2011 ◽  
Vol 6 (4) ◽  
pp. 35-50
Author(s):  
Mayayuki Shinohara ◽  
Akira Hattori ◽  
Shigenori Ioroi ◽  
Hiroshi Tanaka ◽  
Haruo Hayami ◽  
...  
Keyword(s):  
Information Sharing ◽  
Cell Phone ◽  
Local Community ◽  
Cell Phones ◽  
Information Service ◽  
Community System ◽  
A Cell ◽  
Local Residents ◽  
Conventional Cell ◽  
Conventional Systems

This paper presents a hazard/crime incident information sharing system using cell phones. Cell phone penetration is nearly 100% among adults in Japan, and they function as a telecommunication tool as well as a Global Positioning System (GPS) and camera. Open source software (Apache, Postfix, and MySQL) is installed on a system server, and together with the information service provided by Google Maps, are used to satisfy system requirements for the local community. Conventional systems deliver information to all people registered in the same block, even if an incident occurred far from their house. The key feature of the proposed system is that the distribution range of the hazard notification e-mail messages is determined by the geometrical distance from the incident location to the residence of each registered member. The proposed system applies not only to conventional cell phones but also smart phones, which are rapidly becoming popular in Japan. The new system functionality has been confirmed by a trial using members of the local community. System operation began after the successful trial and a training meeting for the local residents. System design, verification results, and operating status are described in this paper.

scholarly journals ICAT: Development of an Internet-Based Data Collection Method for Ecological Momentary Assessment Using Personal Cell Phones

2013 ◽  
Vol 29 (2) ◽  
pp. 140-148 ◽  
Author(s):  
Emmanuel Kuntsche ◽  
Florian Labhart
Keyword(s):  
Cell Phone ◽  
Large Scale ◽  
Cox Regression ◽  
Retention Rate ◽  
Cell Phones ◽  
Text Messages ◽  
Ease Of Use ◽  
Retention Rates ◽  
Baseline Assessment ◽  
Pilot Studies

Rapid advances in mobile data-transfer technologies offer new possibilities in the use of cell phones to conduct assessments of a person’s natural environment in real time. This paper describes features of a new Internet-based, cell phone-optimized assessment technique (ICAT), which consists of a retrospective baseline assessment combined with text messages sent to the participants’ personal cell phones providing a hyperlink to an Internet-stored cell phone-optimized questionnaire. Two participation conditions were used to test variations in response burden. Retention rates, completion rates, and response times in different subgroups were tested by means of χ² tests, Cox regression, and logistic regression. Among the 237 initial participants, we observed a retention rate of 90.3% from the baseline assessment to the cell-phone part, and 80.4% repeated participation in the 30 daily assessments. Each day, 40–70% of the questionnaires were returned, a fourth in less than 3 minutes. Qualitative interviews underscored the ease of use of ICAT. This technique appears to be an innovative, convenient, and cost-effective way of collecting data on situational characteristics while minimizing recall bias. Because of its flexibility, ICAT can be applied in various disciplines, whether as part of small pilot studies or large-scale, crosscultural, and multisite research projects.

scholarly journals DESIGN AND PERFORMANCE OF MOBILE PHONE JAMMER

2020 ◽  
Vol 6 (12) ◽  
pp. 1-5
Author(s):  
Priti Y. Umratkar ◽  
Harshali Chalfe ◽  
S. K. Totade
Keyword(s):  
Mobile Phone ◽  
Mobile Phones ◽  
Mobile Communication ◽  
Cell Phone ◽  
Base Station ◽  
Cellular Phones ◽  
Coverage Area ◽  
Medical Centers ◽  
A Cell ◽  
And Performance

The continuously use of mobile phone can be attributed to it can use in any places and thus have become one of the most widely used devices in mobile communication which makes it so important in our lives. The convenience and portability of cellphones has made it possible to be carried everywhere. e.g Churches, lecture halls, medical centers etc. Its benefit can create disturbance in some places when there is continuous beeping or ringtones of cell phones which becomes annoying when such noise is disturbance in areas where silence is required or the use or of mobile phone is restricted or prohibited like Libraries and Study rooms A mobile phone jammer is an instrument used to prevent cellular phones from receiving signals from base station. It is a device that transmit signal on the same frequency at which the GSM system operates, the jamming success when the mobile phones in the area where the jammer is located are disabled. The mobile phone jammer unit is intended for blocking all mobile phone types within designated indoor areas. The mobile Phone Jammer is a 'plug and play' unit, its installation is quick and its operation is easy. Once the mobile Phone Jammer is operating, all mobile phones present within the jamming coverage area are blocked, and cellular activity in the immediate surroundings (including incoming and outgoing calls, SMS, pictures sending, etc.) is jammer. This paper focuses on the design of a cell phone jammer to prevent the usage of mobile communication in restricted areas without interfering with the communication channels outside its range.

Do Cell Phones Cause Brain Cancer?

2016 ◽  
Author(s):  
Geoffrey C. Kabat
Keyword(s):  
Health Effects ◽  
Mobile Phones ◽  
Brain Cancer ◽  
Cell Phone ◽  
Cell Phones ◽  
Cellular Communications ◽  
Regulatory Bodies ◽  
A Cell ◽  
The Subject ◽  
Positive Results

The possibility that using a cell phone could cause brain cancer first arose in the early 1990s and has been the subject of research since then. Radiofrequency waves used in cellular communications are far too weak to induce cancer by any known mechanism, and most scientific and regulatory bodies have found the evidence for health effects from use of mobile phones to be unconvincing. Nevertheless, positive results, largely from a single group of researchers, and an ambiguous assessment from single agency have kept the controversy alive. New studies are in progress.

“Can You Hear Me Now?” or the Need for Clear Messages

2003 ◽  
Vol 18 (2) ◽  
pp. 45-46
Author(s):  
Alice G Brandfonbrener
Keyword(s):  
Cell Phone ◽  
Cell Phones ◽  
Poor Quality ◽  
Performing Artists ◽  
Subsequent Issue ◽  
A Cell ◽  
Phone Service ◽  
And Performance ◽  
The Many ◽  
Clear Information

Television viewers would agree that the level of creativity is often higher in the commercials than in the programming. My current favorite promotes Sprint by poking fun at a user of a cell phone service with a poor-quality signal, who places an order for 200 head of oxen and receives instead 200 dachshunds, viewed stampeding around the corral. This has less to do with my admiration for Sprint and more with my personal devotion to dachshunds. The lesson on the importance of clear messages can be used in a larger context than cell phones, however. When messages are unclear, for whatever reason, behaviors based on or motivated by them cannot be expected to have the desired results. In this editorial, I examine the importance of providing clear information to parents who are making even the first decisions concerning their children’s study of music and dance. In a subsequent issue of MPPA, we will critique the relative clarity of communication about health and performance of a different sort, that from the many recent performing artists turned authors addressing their colleagues.

Student Ethics in an Era of Personal Entitlement

2012 ◽  
Vol 110 (1) ◽  
pp. 144-148
Author(s):  
Marvin Karlins ◽  
Edyth Hargis ◽  
Alan Balfour
Keyword(s):  
Cell Phone ◽  
Cell Phones ◽  
Business Leaders ◽  
Policy Implications ◽  
Metal Detector ◽  
A Cell ◽  
To Come ◽  
Future Business ◽  
Viable Business

397 students arriving to take an exam in a junior level Principles of Management course were clearly warned on several occasions to keep cell phones outside the testing area or receive a failing test grade if the policy was violated. Just before the examination was administered, with all students sitting in their assigned seats, the professor made a final announcement that anyone still in possession of a cell phone would have one last opportunity to come forward and place it in a box at the front of the testing room. After eight students accepted this final “opportunity,” the professor produced a handheld metal detector, demonstrated how it could detect cell phones placed inside clothing, and informed the class that random screening of students would be conducted as they handed in their examinations. He then added that, as a special favor, he would allow a two-minute amnesty period during which any student could bring a cell phone to the front of the room for storage during the test. 38 students responded by turning in cell phones they had retained in direct violation of course policy. Implications of this cell phone dishonesty for creating viable business ethics and the role of perceived entitlement in shaping the behavior of these future business leaders were discussed.

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