This study investigated the effect of wrist abduction on force applied and response time while performing the distinct tasks using touch screen mobile phone. For this study, a questionnaire was designed and subjects were asked to answer the questions on the basis of daily use of their touch screen mobile phones. On the basis of survey, the two most frequently used postures (one- handed and two handed operation of touch screen mobile phone) were selected for this study. For each case (one handed and two handed posture), three levels of wrist abduction i.e. 00 (neutral posture), 100 , and 200 were taken. Human performance as force applied and motoraction response time was recorded using oscilloscope. These observations were taken for both postures (one handed and two handed). The experimental results were analysed using ANOVA and SPSS software. The ANOVA result shows that wrist abduction angle for both postures (one- handed and two handed) has a significant effect on performance of touch screen mobile phone users. Analysis of results indicates that the two handed posture with wrist abduction 0 o offers optimum performance in this environment
AGE BASED USER INTERFACE IN MOBILE OPERATING SYSTEMIJCSEA Journal
The mobile phones are becoming now an irreplaceable utility of every household. It serves as wall clock, alarm clock, calculator, calendar, timer and many more, but have this multi-functionality overloaded the interface of the new generation of the mobile phones. The youth have adapted well to these multiple functionalities graphical user interface, but the interface has now haunting effects for usage by the two age groups i.e. elderly and kids. The interface may end up leading the new generation mobiles in the market useless or of very little use to the elderly and kids. This leads towards the need of age based user interface in the mobile operating system which will consist of interface selection home screen which further directs to age oriented interfaces.
IJRET : International Journal of Research in Engineering and Technology is an international peer reviewed, online journal published by eSAT Publishing House for the enhancement of research in various disciplines of Engineering and Technology. The aim and scope of the journal is to provide an academic medium and an important reference for the advancement and dissemination of research results that support high-level learning, teaching and research in the fields of Engineering and Technology. We bring together Scientists, Academician, Field Engineers, Scholars and Students of related fields of Engineering and Technology.
Healthy Tips Associated To Computer UseWaqas Tariq
A Cross sectional survey design was used to conduct a study, on a sample of ninety students taken from a population of both part time Postgraduate and final year graduate students of Majan College. Non Probability convenience sampling technique was used to select the samples from the population. The exclusive criteria were students with IT major. The questionnaire consists of queries regarding the health effects of computers, ergonomic postures and the precautionary measures to be taken while using the computer. The knowledge level of the students was assessed using a predesigned questionnaire. The subjects were then exposed to a Self Instruction Module (SIM).The SIM included a power point presentation with multimedia clippings of demonstration of exercises regarding ergonomics of computer use. It was mainly related to the precautionary measures and the correct postures to be maintained to reduce health issues caused by use of computer. The results of the survey showed that the mean of the knowledge score = 7.37 and the standard deviation = 3.37. This proved the need for educating the students on the heath tips and ergonomic postures related to prolonged computer use. The investigators felt that a practical application of this SIM would create health awareness among them and thus improving the quality of work as well as studying environment. A similar study can be recommended on students and also employees of other organizations to educate them with the ergonomic guidelines used to prevent health related problems due to extensive use of computer . Keywords: Self Instruction Module, Computer Ergonomics.
Increasingly sophisticated biometric methods are being used for a
variety of applications in which accurate authentication of people is necessary.
Because all biometric methods require humans to interact with a device of some
type, effective implementation requires consideration of human factors issues.
One such issue is the training needed to use a particular device appropriately.
In this paper, we review human factors issues in general that are associated with
biometric devices and focus more specifically on the role of training.
Awareness of Construction Workers on Occupational Hazards, Illness and Injuri...iosrjce
IOSR Journal of Nursing and health Science is ambitious to disseminate information and experience in education, practice and investigation between medicine, nursing and all the sciences involved in health care. Nursing & Health Sciences focuses on the international exchange of knowledge in nursing and health sciences. The journal publishes peer-reviewed papers on original research, education and clinical practice.
By encouraging scholars from around the world to share their knowledge and expertise, the journal aims to provide the reader with a deeper understanding of the lived experience of nursing and health sciences and the opportunity to enrich their own area of practice. The journal publishes original papers, reviews, special and general articles, case management etc.
iPhone, Android and Tablets - Getting Clinical Value from Mobile DevicesCientis Technologies
The rapid adoption of mobile devices by clinicians and integration of apps into the clinical workflow has created significant opportunities for these devices to become primary tools in the diagnosis and management of disease. This presentation provides an overview of the drivers behind adoption, what clinicians are using and how one can drive more value from these tools. This data was presented at the Technology in Clinical Practice Cruise Conference - April 2013.
Ergonomic Evaluation of the Angle of Abduction in Laptops EnvironmentIJERA Editor
Laptops in 21st century are an integral part of every professional in vivid fields. Off late there has been
emergence of several ergonomic injuries such as repetitive strain injuries (RSIs) due to extensive usage of
laptops, which can be closely linked with applied force and postures. This study investigated the effect of
various angles of keyboard on the applied force and motor action plus response time while performing five
distinct tasks. On the basis of literature two different laptops were selected for performing different tasks. For
each case the three levels of platform angle were considered as 0°, 5°, and 10°. Male subjects were selected to
perform five distinct tasks for each platform angle for both laptops. The force applied (in milli-volts) and the
motor action plus response time (milli-seconds) were recorded using an oscilloscope. The data collected were
analyzed through ANOVA using MINITAB software. The abduction angle with the least mean response time
and applied force were considered as the best from ergonomics viewpoint. The ANOVA results showed that the
angle of abduction for both laptops (small and large) do have significant effect on applied force but not on motor
action plus response time. The analysis of results indicate that 10° angle of abduction in case of small laptops
should be applied to minimize musculoskeletal disorder and repetitive strain injuries.
Research relevance: This work suggests that those responsible for the function and operation of laptops would
have to redesign the system to reduce injuries, as far as musculoskeletal disorder, repetitive strain injuries and
other related problems are concerned. The present work can be quite useful for the system designers of
tomorrow.
AGE BASED USER INTERFACE IN MOBILE OPERATING SYSTEMIJCSEA Journal
The mobile phones are becoming now an irreplaceable utility of every household. It serves as wall clock, alarm clock, calculator, calendar, timer and many more, but have this multi-functionality overloaded the interface of the new generation of the mobile phones. The youth have adapted well to these multiple functionalities graphical user interface, but the interface has now haunting effects for usage by the two age groups i.e. elderly and kids. The interface may end up leading the new generation mobiles in the market useless or of very little use to the elderly and kids. This leads towards the need of age based user interface in the mobile operating system which will consist of interface selection home screen which further directs to age oriented interfaces.
IJRET : International Journal of Research in Engineering and Technology is an international peer reviewed, online journal published by eSAT Publishing House for the enhancement of research in various disciplines of Engineering and Technology. The aim and scope of the journal is to provide an academic medium and an important reference for the advancement and dissemination of research results that support high-level learning, teaching and research in the fields of Engineering and Technology. We bring together Scientists, Academician, Field Engineers, Scholars and Students of related fields of Engineering and Technology.
Healthy Tips Associated To Computer UseWaqas Tariq
A Cross sectional survey design was used to conduct a study, on a sample of ninety students taken from a population of both part time Postgraduate and final year graduate students of Majan College. Non Probability convenience sampling technique was used to select the samples from the population. The exclusive criteria were students with IT major. The questionnaire consists of queries regarding the health effects of computers, ergonomic postures and the precautionary measures to be taken while using the computer. The knowledge level of the students was assessed using a predesigned questionnaire. The subjects were then exposed to a Self Instruction Module (SIM).The SIM included a power point presentation with multimedia clippings of demonstration of exercises regarding ergonomics of computer use. It was mainly related to the precautionary measures and the correct postures to be maintained to reduce health issues caused by use of computer. The results of the survey showed that the mean of the knowledge score = 7.37 and the standard deviation = 3.37. This proved the need for educating the students on the heath tips and ergonomic postures related to prolonged computer use. The investigators felt that a practical application of this SIM would create health awareness among them and thus improving the quality of work as well as studying environment. A similar study can be recommended on students and also employees of other organizations to educate them with the ergonomic guidelines used to prevent health related problems due to extensive use of computer . Keywords: Self Instruction Module, Computer Ergonomics.
Increasingly sophisticated biometric methods are being used for a
variety of applications in which accurate authentication of people is necessary.
Because all biometric methods require humans to interact with a device of some
type, effective implementation requires consideration of human factors issues.
One such issue is the training needed to use a particular device appropriately.
In this paper, we review human factors issues in general that are associated with
biometric devices and focus more specifically on the role of training.
Awareness of Construction Workers on Occupational Hazards, Illness and Injuri...iosrjce
IOSR Journal of Nursing and health Science is ambitious to disseminate information and experience in education, practice and investigation between medicine, nursing and all the sciences involved in health care. Nursing & Health Sciences focuses on the international exchange of knowledge in nursing and health sciences. The journal publishes peer-reviewed papers on original research, education and clinical practice.
By encouraging scholars from around the world to share their knowledge and expertise, the journal aims to provide the reader with a deeper understanding of the lived experience of nursing and health sciences and the opportunity to enrich their own area of practice. The journal publishes original papers, reviews, special and general articles, case management etc.
iPhone, Android and Tablets - Getting Clinical Value from Mobile DevicesCientis Technologies
The rapid adoption of mobile devices by clinicians and integration of apps into the clinical workflow has created significant opportunities for these devices to become primary tools in the diagnosis and management of disease. This presentation provides an overview of the drivers behind adoption, what clinicians are using and how one can drive more value from these tools. This data was presented at the Technology in Clinical Practice Cruise Conference - April 2013.
Ergonomic Evaluation of the Angle of Abduction in Laptops EnvironmentIJERA Editor
Laptops in 21st century are an integral part of every professional in vivid fields. Off late there has been
emergence of several ergonomic injuries such as repetitive strain injuries (RSIs) due to extensive usage of
laptops, which can be closely linked with applied force and postures. This study investigated the effect of
various angles of keyboard on the applied force and motor action plus response time while performing five
distinct tasks. On the basis of literature two different laptops were selected for performing different tasks. For
each case the three levels of platform angle were considered as 0°, 5°, and 10°. Male subjects were selected to
perform five distinct tasks for each platform angle for both laptops. The force applied (in milli-volts) and the
motor action plus response time (milli-seconds) were recorded using an oscilloscope. The data collected were
analyzed through ANOVA using MINITAB software. The abduction angle with the least mean response time
and applied force were considered as the best from ergonomics viewpoint. The ANOVA results showed that the
angle of abduction for both laptops (small and large) do have significant effect on applied force but not on motor
action plus response time. The analysis of results indicate that 10° angle of abduction in case of small laptops
should be applied to minimize musculoskeletal disorder and repetitive strain injuries.
Research relevance: This work suggests that those responsible for the function and operation of laptops would
have to redesign the system to reduce injuries, as far as musculoskeletal disorder, repetitive strain injuries and
other related problems are concerned. The present work can be quite useful for the system designers of
tomorrow.
Ergonomic Evaluation of the Angle of Abduction in Laptops EnvironmentIJERA Editor
Laptops in 21st century are an integral part of every professional in vivid fields. Off late there has been
emergence of several ergonomic injuries such as repetitive strain injuries (RSIs) due to extensive usage of
laptops, which can be closely linked with applied force and postures. This study investigated the effect of
various angles of keyboard on the applied force and motor action plus response time while performing five
distinct tasks. On the basis of literature two different laptops were selected for performing different tasks. For
each case the three levels of platform angle were considered as 0°, 5°, and 10°. Male subjects were selected to
perform five distinct tasks for each platform angle for both laptops. The force applied (in milli-volts) and the
motor action plus response time (milli-seconds) were recorded using an oscilloscope. The data collected were
analyzed through ANOVA using MINITAB software. The abduction angle with the least mean response time
and applied force were considered as the best from ergonomics viewpoint. The ANOVA results showed that the
angle of abduction for both laptops (small and large) do have significant effect on applied force but not on motor
action plus response time. The analysis of results indicate that 10° angle of abduction in case of small laptops
should be applied to minimize musculoskeletal disorder and repetitive strain injuries.
Research relevance: This work suggests that those responsible for the function and operation of laptops would
have to redesign the system to reduce injuries, as far as musculoskeletal disorder, repetitive strain injuries and
other related problems are concerned. The present work can be quite useful for the system designers of
tomorrow.
AGE BASED USER INTERFACE IN MOBILE OPERATING SYSTEMIJCSEA Journal
The mobile phones are becoming now an irreplaceable utility of every household. It serves as wall clock, alarm clock, calculator, calendar, timer and many more, but have this multi-functionality overloaded the interface of the new generation of the mobile phones. The youth have adapted well to these multiple functionalities graphical user interface, but the interface has now haunting effects for usage by the two age groups i.e. elderly and kids. The interface may end up leading the new generation mobiles in the market useless or of very little use to the elderly and kids. This leads towards the need of age based user interface in the mobile operating system which will consist of interface selection home screen which further directs to age oriented interfaces.
A Theoretical Framework of the Influence of Mobility in Continued Usage Inten...csandit
In the face of fierce competition in the mobile dev
ice market, the only way for smart mobile
device producers to maintain and expand their marke
t share is to design and develop products
that meet users’ expectations. With the increasing
importance of smart mobile devices in
people’s lives, mobility is likely to be a key feat
ure that addresses the needs of mobile phone
users. Therefore, this survey investigates mobility
in four essential aspects: spatiality,
temporality, contextuality, and social fluidity wit
h the purpose of finding mobile device
functions that users value highly. Special attentio
n is paid to how these constructs affect
continued usage intention (CUI) through two interme
diates: user confirmation and user
satisfaction.
SMARCOS Abstract Paper submitted to ICCHP 2012Smarcos Eu
This study is part of the European project "Smarcos" (http://www.smarcos-project.eu/) that includes among its goals the development of services which are specifically designed and accessible for blind users.
In this paper we present the prototype application designed to make the main phone features available in a way which is accessible for a blind user. The prototype has been developed to firstly evaluate the interaction modalities based on gestures, audio and vibro-tactile feedback.
(Crestani et al., 2004) The proliferation of mobile devices and thMargaritoWhitt221
(Crestani et al., 2004) The proliferation of mobile devices and the ubiquity of computing and networking technologies have revolutionized how we access information. Mobile and ubiquitous information access is now an essential issue in human-computer interaction, information retrieval, and computer-supported cooperative work.
The International Workshop on Mobile and Ubiquitous Information Access (MobileHCI) was held in Udine, Italy, on September 8, 2003. It included user interface design issues, novel interaction techniques, context-aware applications, collaborative systems, and social implications of mobile computing. They provide a snapshot of the state-of-the-art in this rapidly evolving field. They will interest researchers and practitioners in human-computer interaction, information retrieval, and computer-supported cooperative work.
The workshop was organized by Fabio Crestani, Mark Dunlop, and Stefano Mizzaro. It was in conjunction with the Ninth International Conference on Human-Computer Interaction (HCI International 2003).
(Bace et al.,2020) Part of this is that it's challenging to quantify visual attention in mobile HCI. In a recent paper, Bace et al. tried to address this challenge by quantifying how often and for how long users look at their mobile devices.
The researchers found that, on average, users look at their devices around 46 times per day. They also found that users spend more time looking at their instruments when using them for communication purposes, such as text messaging or phone calls. This suggests a need for further research into how mobile devices can be designed to capture better and hold users' attention.
The researchers also found that users look at their devices more often in a social setting, such as a meeting or a party. This suggests that mobile devices may be distracting us from our social interactions.
In conclusion, the study provides valuable insights into how we can better understand and quantify visual attention in mobile HCI.
(Oulasvirta et al.,2005) Mobile HCI 2004 was a seminal conference on human-computer interaction with mobile technology. The meeting was highly successful, and its impact is still felt today.
The theme of the conference was "Experience and Reflection." This theme was reflected in the papers presented at the meeting, which covered a wide range of topics related to mobile HCI. The papers addressed user experience, design principles, interaction techniques, and evaluation methods in addition to these technical papers, keynote speeches, and panel discussions on various aspects of mobile HCI.
The Mobile HCI 2004 conference was an important event in the history of mobile HCI. It helped establish the field as a central research area, and its papers have significantly impacted how mobile HCI is conducted today.
(Jia, 2014) The limited display space of mobile devices is inadequate for simultaneously displaying all the information needed in context. This paper proposes a novel mobile ...
Touch is one of the most common forms of sign language used in oral communication. It is most commonly used by deaf and dumb people who have difficulty hearing or speaking. Communication between them or ordinary people. Various sign-language programs have been developed by many manufacturers around the world, but they are relatively flexible and affordable for end users. Therefore, this paper has presented software that introduces a type of system that can automatically detect sign language to help deaf and mute people communicate better with other people or ordinary people. Pattern recognition and hand recognition are developing fields of research. Being an integral part of meaningless hand-to-hand communication plays a major role in our daily lives. The handwriting system gives us a new, natural, easy-to-use communication system with a computer that is very common to humans. Considering the similarity of the human condition with four fingers and one thumb, the software aims to introduce a real-time hand recognition system based on the acquisition of some of the structural features such as position, mass centroid, finger position, thumb instead of raised or folded finger.
To See the Effectiveness of Smart Phone Applications Aided with Therapeutic H...ijtsrd
Hand therapy is the art and science of rehabilitation of the upper limb from shoulder to hand .It mainly involves non surgical management and comes under specialty with in Occupational therapy. It deals with evaluating and treatment of injuries and disorders of Hand. Hand therapist also treats other upper limb disorders that affect hand function. Hand therapy combines together techniques of occupational therapy which consist of scar management, retraining, splinting advice on activities of daily living, return to work process etc. Kunal Gaurav | Subha Arora | Dr. Sanjeev Kumar "To See the Effectiveness of Smart Phone Applications Aided with Therapeutic Hand Activities Treatment in Wrist Fracture on Hand Functions" Published in International Journal of Trend in Scientific Research and Development (ijtsrd), ISSN: 2456-6470, Volume-5 | Issue-2 , February 2021, URL: https://www.ijtsrd.com/papers/ijtsrd38278.pdf Paper Url: https://www.ijtsrd.com/medicine/other/38278/to-see-the-effectiveness-of-smart-phone-applications-aided-with-therapeutic-hand-activities-treatment-in-wrist-fracture-on-hand-functions/kunal-gaurav
Consumer Intention to Adopt Smartphone Apps: An Empirical Study of PakistanIOSRJBM
The paper investigates the relationship between the perceived usefulness, perceived ease of use, perceived enjoyment, social needs, subjective norms, self-efficacy and personal attitude with a mediating role of Intention to adopt smart phone apps and impact on the customer behavior. The current recognition of smart phones is a result of rapid development in smart phone apps that offer much kind of mobile persistent services. We used theory of planned behavior for consumer intention to adopt these apps. Our findings suggest that consumer intention is always based on these factors like perceived usefulness, perceived ease of use, perceived enjoyment, social needs, subjective norms, self-efficacy and personal attitude now a days and that intention to adopt apps will impact the consumer behavior
Leveraging the Power of Smartphones: Real Time Monitoring of Water PointsIJERA Editor
In recent years, the world has become more sophisticated. Different aspects of today’s life has been digitized, this include; business, education, health, communication and numerous community services. With the existing extended coverage of cellular networks, most services are constantly deployed to be accessed via mobile phones, as they are also the most pervasive pocket carried devices. Though, both regular and smartphone can be used to convey the basics of mobile based services such as mobile banking, calling and text messaging, smartphone goes extra mile. While regular phones are still the better choice for some, smartphones are tremendously taking over the cellphone market. Smartphones are powered by the vast amount of mobile apps available today which offer unprecedented features and functionalities and as well more advanced internet connectivity. To ensure reliable, sufficient and safe water supply to public, the installed water points need to be well monitored. Quality and quantity parameters of water produced from the water points are constantly tracked to determine if they are within the acceptable range. In case of acute condition, the identified parameters need to be instantly communicated to the District Water Engineer (DWE) for prompt intervention. In this paper we explore the popularity and advantages of smartphones and present a proposed prototype that exploit the power of smartphones in real time monitoring of water points.
Research Paper OutlineI. INTRODUCTIONa. Exploring mobile app.docxronak56
Research Paper Outline
I. INTRODUCTION
a. Exploring mobile applications.
b. People spend more time on mobile applications, than on their mobile web browser.
c. Discovering the diversity of mobile applications and preferred mobile operating system and economics among consumers.
II. MAIN TOPIC
a. Why mobile applications are growing and how it effects businesses.
b. Molding applications to different mobile devices.
c. Developers, applications, consumers, and expectations.
III. CONCLUSION
a. Recap on why consumers use mobile applications over web browsers.
b. Summarize the main topics on mobile applications growth, how each devices have different specification needs, and the expectations for developers and consumers.
c. Mobile applications are easy to use and fits the consumer needs. It eliminates unnecessary objects, rather condensed to a better view.
VI. REFERENCES
(All sources (information and graphics) are accurately documented in APA)
a. Henricksen, K., & Indulska, J. (2006). Developing context-aware pervasive computing applications: Models and approach. Pervasive and mobile computing, 2(1), 37-64.
b. Joorabchi, M. E., Mesbah, A., & Kruchten, P. (2013, October). Real challenges in mobile app development. In Empirical Software Engineering and Measurement, 2013 ACM/IEEE International Symposium on (pp. 15-24). IEEE.
c. Khalid, H., Shihab, E., Nagappan, M., & Hassan, A. E. (2015). What do mobile app users complain about?. IEEE Software, 32(3), 70-77.
Running head: MOBILE COMPUTING APPLICATIONS 1
MOBILE COMPUTING APPLICATIONS 2
Mobile Computing Applications
Name
School
Professor
Date
Mobile Computing Applications
Purpose statement
We live in a world of technology. Therefore, mobile devices have gained a multimedia communication legacy that will be hard to replace in the future. The mobile devices range from smartphones with a wide range of OS applications including Android, iPhone, BlackBerry and Windows among others of which there are some that are under development today. This study aims at exploring the diversity of mobile applications and preferred mobile operating system and economics among consumers. Are they enhancing lifestyle, more to business or killing business? The term app is a short form of software applications that have been popular listed as word of the year in 2010, by the American Dialect Society. Nowadays, the mobile devices can be purchased with several applications which are pre-installed like the web browser, and e-mail client among others. There are many options for mobile apps. The use depends on personal preference. For example, if consumers do not want to use pre-installed applications they can be removed by the use of a simple uninstall process to create space for more applications.
A mobile device user can get apps that are not pre-installed through the platforms like app stores where they are readily available. In the year 2008, these apps began to appear and are being operated ...
Evaluationof Smartphone Accessibility Interface Practices for Older Adultsinventionjournals
ABSTRACT: Smartphone's can play a significant role in maintaining decent Quality of Life for elderly people. Key factor to Smartphone's usage success among elderly people depends on the accessibility of phone interface.Indeed, there is an exponential growth of the elderly population that suffers from age-related disabilities. Accessibility problems should be in mindfor developers. To address these issues in new smart phone devices there is no proper set of guidelines available that focus on this domain. So in this paper the work focuses on: (1) a set of guidelines to keep in mind in order to achieve accessibility in mobileinterfaces for older people. This checklist is the result of a review study of the literature, standards and best practices that are being performedin this area of knowledge, (2) use of this accessibility checklist aimed at elderly people, a survey of three mobile native Apps on androidplatform has been carried out, these Apps have as aim to modify the default interface for another more accessible one.
Examining the Usability of Message Reading Features on Smartwatchesinventionjournals
This study examined smart watch message reading features by considering the following assessment points: simplicity, comprehensibility, perceived usefulness, and overall satisfaction. Three smart watches (Pebble Watch, Samsung Galaxy Gear2, and Sony Smartwatch2) were subjected to user tests, and indepth user interviews were conducted. The results showed that 83.3% of participants experienced difficulty in checking and reading messages. Screen size, text size, and accessing messages were the top three factors causing inconvenience. The participants believed that the most useful feature of the smart watch was message notification, and message reading was also considered useful. The message notification function could be further developed for smartwatch design.
KuberTENes Birthday Bash Guadalajara - K8sGPT first impressionsVictor Morales
K8sGPT is a tool that analyzes and diagnoses Kubernetes clusters. This presentation was used to share the requirements and dependencies to deploy K8sGPT in a local environment.
Ergonomic Evaluation of the Angle of Abduction in Laptops EnvironmentIJERA Editor
Laptops in 21st century are an integral part of every professional in vivid fields. Off late there has been
emergence of several ergonomic injuries such as repetitive strain injuries (RSIs) due to extensive usage of
laptops, which can be closely linked with applied force and postures. This study investigated the effect of
various angles of keyboard on the applied force and motor action plus response time while performing five
distinct tasks. On the basis of literature two different laptops were selected for performing different tasks. For
each case the three levels of platform angle were considered as 0°, 5°, and 10°. Male subjects were selected to
perform five distinct tasks for each platform angle for both laptops. The force applied (in milli-volts) and the
motor action plus response time (milli-seconds) were recorded using an oscilloscope. The data collected were
analyzed through ANOVA using MINITAB software. The abduction angle with the least mean response time
and applied force were considered as the best from ergonomics viewpoint. The ANOVA results showed that the
angle of abduction for both laptops (small and large) do have significant effect on applied force but not on motor
action plus response time. The analysis of results indicate that 10° angle of abduction in case of small laptops
should be applied to minimize musculoskeletal disorder and repetitive strain injuries.
Research relevance: This work suggests that those responsible for the function and operation of laptops would
have to redesign the system to reduce injuries, as far as musculoskeletal disorder, repetitive strain injuries and
other related problems are concerned. The present work can be quite useful for the system designers of
tomorrow.
AGE BASED USER INTERFACE IN MOBILE OPERATING SYSTEMIJCSEA Journal
The mobile phones are becoming now an irreplaceable utility of every household. It serves as wall clock, alarm clock, calculator, calendar, timer and many more, but have this multi-functionality overloaded the interface of the new generation of the mobile phones. The youth have adapted well to these multiple functionalities graphical user interface, but the interface has now haunting effects for usage by the two age groups i.e. elderly and kids. The interface may end up leading the new generation mobiles in the market useless or of very little use to the elderly and kids. This leads towards the need of age based user interface in the mobile operating system which will consist of interface selection home screen which further directs to age oriented interfaces.
A Theoretical Framework of the Influence of Mobility in Continued Usage Inten...csandit
In the face of fierce competition in the mobile dev
ice market, the only way for smart mobile
device producers to maintain and expand their marke
t share is to design and develop products
that meet users’ expectations. With the increasing
importance of smart mobile devices in
people’s lives, mobility is likely to be a key feat
ure that addresses the needs of mobile phone
users. Therefore, this survey investigates mobility
in four essential aspects: spatiality,
temporality, contextuality, and social fluidity wit
h the purpose of finding mobile device
functions that users value highly. Special attentio
n is paid to how these constructs affect
continued usage intention (CUI) through two interme
diates: user confirmation and user
satisfaction.
SMARCOS Abstract Paper submitted to ICCHP 2012Smarcos Eu
This study is part of the European project "Smarcos" (http://www.smarcos-project.eu/) that includes among its goals the development of services which are specifically designed and accessible for blind users.
In this paper we present the prototype application designed to make the main phone features available in a way which is accessible for a blind user. The prototype has been developed to firstly evaluate the interaction modalities based on gestures, audio and vibro-tactile feedback.
(Crestani et al., 2004) The proliferation of mobile devices and thMargaritoWhitt221
(Crestani et al., 2004) The proliferation of mobile devices and the ubiquity of computing and networking technologies have revolutionized how we access information. Mobile and ubiquitous information access is now an essential issue in human-computer interaction, information retrieval, and computer-supported cooperative work.
The International Workshop on Mobile and Ubiquitous Information Access (MobileHCI) was held in Udine, Italy, on September 8, 2003. It included user interface design issues, novel interaction techniques, context-aware applications, collaborative systems, and social implications of mobile computing. They provide a snapshot of the state-of-the-art in this rapidly evolving field. They will interest researchers and practitioners in human-computer interaction, information retrieval, and computer-supported cooperative work.
The workshop was organized by Fabio Crestani, Mark Dunlop, and Stefano Mizzaro. It was in conjunction with the Ninth International Conference on Human-Computer Interaction (HCI International 2003).
(Bace et al.,2020) Part of this is that it's challenging to quantify visual attention in mobile HCI. In a recent paper, Bace et al. tried to address this challenge by quantifying how often and for how long users look at their mobile devices.
The researchers found that, on average, users look at their devices around 46 times per day. They also found that users spend more time looking at their instruments when using them for communication purposes, such as text messaging or phone calls. This suggests a need for further research into how mobile devices can be designed to capture better and hold users' attention.
The researchers also found that users look at their devices more often in a social setting, such as a meeting or a party. This suggests that mobile devices may be distracting us from our social interactions.
In conclusion, the study provides valuable insights into how we can better understand and quantify visual attention in mobile HCI.
(Oulasvirta et al.,2005) Mobile HCI 2004 was a seminal conference on human-computer interaction with mobile technology. The meeting was highly successful, and its impact is still felt today.
The theme of the conference was "Experience and Reflection." This theme was reflected in the papers presented at the meeting, which covered a wide range of topics related to mobile HCI. The papers addressed user experience, design principles, interaction techniques, and evaluation methods in addition to these technical papers, keynote speeches, and panel discussions on various aspects of mobile HCI.
The Mobile HCI 2004 conference was an important event in the history of mobile HCI. It helped establish the field as a central research area, and its papers have significantly impacted how mobile HCI is conducted today.
(Jia, 2014) The limited display space of mobile devices is inadequate for simultaneously displaying all the information needed in context. This paper proposes a novel mobile ...
Touch is one of the most common forms of sign language used in oral communication. It is most commonly used by deaf and dumb people who have difficulty hearing or speaking. Communication between them or ordinary people. Various sign-language programs have been developed by many manufacturers around the world, but they are relatively flexible and affordable for end users. Therefore, this paper has presented software that introduces a type of system that can automatically detect sign language to help deaf and mute people communicate better with other people or ordinary people. Pattern recognition and hand recognition are developing fields of research. Being an integral part of meaningless hand-to-hand communication plays a major role in our daily lives. The handwriting system gives us a new, natural, easy-to-use communication system with a computer that is very common to humans. Considering the similarity of the human condition with four fingers and one thumb, the software aims to introduce a real-time hand recognition system based on the acquisition of some of the structural features such as position, mass centroid, finger position, thumb instead of raised or folded finger.
To See the Effectiveness of Smart Phone Applications Aided with Therapeutic H...ijtsrd
Hand therapy is the art and science of rehabilitation of the upper limb from shoulder to hand .It mainly involves non surgical management and comes under specialty with in Occupational therapy. It deals with evaluating and treatment of injuries and disorders of Hand. Hand therapist also treats other upper limb disorders that affect hand function. Hand therapy combines together techniques of occupational therapy which consist of scar management, retraining, splinting advice on activities of daily living, return to work process etc. Kunal Gaurav | Subha Arora | Dr. Sanjeev Kumar "To See the Effectiveness of Smart Phone Applications Aided with Therapeutic Hand Activities Treatment in Wrist Fracture on Hand Functions" Published in International Journal of Trend in Scientific Research and Development (ijtsrd), ISSN: 2456-6470, Volume-5 | Issue-2 , February 2021, URL: https://www.ijtsrd.com/papers/ijtsrd38278.pdf Paper Url: https://www.ijtsrd.com/medicine/other/38278/to-see-the-effectiveness-of-smart-phone-applications-aided-with-therapeutic-hand-activities-treatment-in-wrist-fracture-on-hand-functions/kunal-gaurav
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Leveraging the Power of Smartphones: Real Time Monitoring of Water PointsIJERA Editor
In recent years, the world has become more sophisticated. Different aspects of today’s life has been digitized, this include; business, education, health, communication and numerous community services. With the existing extended coverage of cellular networks, most services are constantly deployed to be accessed via mobile phones, as they are also the most pervasive pocket carried devices. Though, both regular and smartphone can be used to convey the basics of mobile based services such as mobile banking, calling and text messaging, smartphone goes extra mile. While regular phones are still the better choice for some, smartphones are tremendously taking over the cellphone market. Smartphones are powered by the vast amount of mobile apps available today which offer unprecedented features and functionalities and as well more advanced internet connectivity. To ensure reliable, sufficient and safe water supply to public, the installed water points need to be well monitored. Quality and quantity parameters of water produced from the water points are constantly tracked to determine if they are within the acceptable range. In case of acute condition, the identified parameters need to be instantly communicated to the District Water Engineer (DWE) for prompt intervention. In this paper we explore the popularity and advantages of smartphones and present a proposed prototype that exploit the power of smartphones in real time monitoring of water points.
Research Paper OutlineI. INTRODUCTIONa. Exploring mobile app.docxronak56
Research Paper Outline
I. INTRODUCTION
a. Exploring mobile applications.
b. People spend more time on mobile applications, than on their mobile web browser.
c. Discovering the diversity of mobile applications and preferred mobile operating system and economics among consumers.
II. MAIN TOPIC
a. Why mobile applications are growing and how it effects businesses.
b. Molding applications to different mobile devices.
c. Developers, applications, consumers, and expectations.
III. CONCLUSION
a. Recap on why consumers use mobile applications over web browsers.
b. Summarize the main topics on mobile applications growth, how each devices have different specification needs, and the expectations for developers and consumers.
c. Mobile applications are easy to use and fits the consumer needs. It eliminates unnecessary objects, rather condensed to a better view.
VI. REFERENCES
(All sources (information and graphics) are accurately documented in APA)
a. Henricksen, K., & Indulska, J. (2006). Developing context-aware pervasive computing applications: Models and approach. Pervasive and mobile computing, 2(1), 37-64.
b. Joorabchi, M. E., Mesbah, A., & Kruchten, P. (2013, October). Real challenges in mobile app development. In Empirical Software Engineering and Measurement, 2013 ACM/IEEE International Symposium on (pp. 15-24). IEEE.
c. Khalid, H., Shihab, E., Nagappan, M., & Hassan, A. E. (2015). What do mobile app users complain about?. IEEE Software, 32(3), 70-77.
Running head: MOBILE COMPUTING APPLICATIONS 1
MOBILE COMPUTING APPLICATIONS 2
Mobile Computing Applications
Name
School
Professor
Date
Mobile Computing Applications
Purpose statement
We live in a world of technology. Therefore, mobile devices have gained a multimedia communication legacy that will be hard to replace in the future. The mobile devices range from smartphones with a wide range of OS applications including Android, iPhone, BlackBerry and Windows among others of which there are some that are under development today. This study aims at exploring the diversity of mobile applications and preferred mobile operating system and economics among consumers. Are they enhancing lifestyle, more to business or killing business? The term app is a short form of software applications that have been popular listed as word of the year in 2010, by the American Dialect Society. Nowadays, the mobile devices can be purchased with several applications which are pre-installed like the web browser, and e-mail client among others. There are many options for mobile apps. The use depends on personal preference. For example, if consumers do not want to use pre-installed applications they can be removed by the use of a simple uninstall process to create space for more applications.
A mobile device user can get apps that are not pre-installed through the platforms like app stores where they are readily available. In the year 2008, these apps began to appear and are being operated ...
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Terzaghi's soil bearing capacity theory, developed by Karl Terzaghi, is a fundamental principle in geotechnical engineering used to determine the bearing capacity of shallow foundations. This theory provides a method to calculate the ultimate bearing capacity of soil, which is the maximum load per unit area that the soil can support without undergoing shear failure. The Calculation HTML Code included.
An Approach to Detecting Writing Styles Based on Clustering Techniquesambekarshweta25
An Approach to Detecting Writing Styles Based on Clustering Techniques
Authors:
-Devkinandan Jagtap
-Shweta Ambekar
-Harshit Singh
-Nakul Sharma (Assistant Professor)
Institution:
VIIT Pune, India
Abstract:
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Introduction:
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Methodology:
The system includes data collection, preprocessing, feature extraction, dimensional reduction, machine learning models for clustering, and performance comparison using silhouette scores. Feature extraction focuses on lexical features, vocabulary richness, and readability scores. The study uses a small dataset of texts from various authors and employs algorithms like k-means, k-means++, hierarchical clustering, and DBSCAN for clustering.
Results:
Experiments show that the system effectively identifies writing styles, with silhouette scores indicating reasonable to strong clustering when k=2. As the number of clusters increases, the silhouette scores decrease, indicating a drop in accuracy. K-means and k-means++ perform similarly, while hierarchical clustering is less optimized.
Conclusion and Future Work:
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We used HTML/PHP as front end and MYSQL as back end for developing our project. HTML is primarily a visual design environment. We can create a android application by designing the form and that make up the user interface. Adding android application code to the form and the objects such as buttons and text boxes on them and adding any required support code in additional modular.
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6th International Conference on Machine Learning & Applications (CMLA 2024)ClaraZara1
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Hybrid optimization of pumped hydro system and solar- Engr. Abdul-Azeez.pdffxintegritypublishin
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Effect of wrist abduction on force applied and response time during touch screen mobile phone use
1. Imtiaz Ali Khan. Int. Journal of Engineering Research and Application www.ijera.com
ISSN : 2248-9622, Vol. 7, Issue 6, ( Part -5) June 2017, pp.01-10
www.ijera.com DOI: 10.9790/9622-0706050110 1 | P a g e
Effect of wrist abduction on force applied and response time
during touch screen mobile phone use
Imtiaz Ali Khan ,
Kumar Prateek and Shahnawaz Mohsin
Department of Mechanical Engineering, Aligarh Muslim University, Aligarh (U.P.)202002, India.
Abstract
This study investigated the effect of wrist abduction on force applied and response time while performing the
distinct tasks using touch screen mobile phone. For this study, a questionnaire was designed and subjects were
asked to answer the questions on the basis of daily use of their touch screen mobile phones. On the basis of
survey, the two most frequently used postures (one- handed and two handed operation of touch screen mobile
phone) were selected for this study. For each case (one handed and two handed posture), three levels of wrist
abduction i.e. 00
(neutral posture), 100
, and 200
were taken. Human performance as force applied and motor-
action response time was recorded using oscilloscope. These observations were taken for both postures (one
handed and two handed). The experimental results were analysed using ANOVA and SPSS software. The
ANOVA result shows that wrist abduction angle for both postures (one- handed and two handed) has a
significant effect on performance of touch screen mobile phone users. Analysis of results indicates that the two
handed posture with wrist abduction 0o
offers optimum performance in this environment.
Keywords: Touch screen; Mobile phone; Wrist angle of abduction; Response time; Force applied; MANOVA
I. INTRODUCTION
At the beginning of mobile phone
development, touch panel technology was frequently
used in public places, and it has become popular in
individuals’ everyday lives. For example, touch
panels are often used in museums or as exhibition
navigation guides and to display or sell goods in
department stores. After the successive launches of
i-Phone mobile in 2007 and the i-Pad in 2010, touch
panels have begun to be implemented in applications
for personal use. Moreover, in 2013, 10% of all
population in the India own a touch screen mobile
phone; almost thrice the 3.5% figure from 2012.
Given the popularity of the touch screen mobile
phone, many studies have analyzed touch screen
mobile phone usability, including studies comparing
the performance of operating tasks, one- and two-
hand gestures, differently sized touch panels,
different age groups, and the design considerations
for touch-screen interfaces of mobile phones. With
the convenience of touch screen mobile phones
increasing their frequency and duration of use, the
design characteristics of these phones give rise to
concerns regarding their impact upon body
mechanics and the musculoskeletal system. The
nature of cell phone use may facilitate the potential
for the development of musculoskeletal symptoms.
With more and more people owning Smartphone and
spending greater amounts of time texting, tweeting,
emailing, e-reading and surfing the net,
physiotherapists have seen a significant increase in
mobile phone and hand-held device related injuries.
In addition to the common overuse and posture
related injuries, there is also the risk of acute injuries
sustained from using mobile phones in at risk
situations (requiring full attention), such as whilst
driving or walking (particularly on uneven surfaces).
It is important to be aware of the risks associated
with using a mobile phone or hand-held device and
to take healthy steps and safety measures to avoid
potential injury.
In over 40% of our observations, a user was
interacting with a mobile phone without inputting
any data via key or screen. Figure 1.10 provides a
visual breakdown of the data from our observations
Figure-1.1 Summary of how people hold and
interact with mobile phones (average usage time)
RESEARCH ARTICLE OPEN ACCESS
2. Imtiaz Ali Khan. Int. Journal of Engineering Research and Application www.ijera.com
ISSN : 2248-9622, Vol. 7, Issue 6, ( Part -5) June 2017, pp.01-10
www.ijera.com DOI: 10.9790/9622-0706050110 2 | P a g e
Text entry is a fairly complex process,
involving visual, tactile, motion, memory, learning,
and other cognitive functions. Moreover, they
belong to different levels of cognitive processing.
The process of text entry is subject to the
biomechanical constraints of the hand. Whether
perceptual and cognitive concepts are suitable will
dominantly affect the user’s final performance, such
as the response time and accuracy rate (Khan
2014a; Khan 2014b; Khan; 2014c; Khan 2014d;
Khan and Asghar 2011; Khan and Asghar 2010).
Therefore, if a new input method is to be designed,
ergonomically designed operation and cognitive
compatibility must be emphasized. According to
Fitts’ law concerning motion execution (Fitts, 1954),
the keyboard layout should be arranged so that a
finger travels the minimum distance necessary,
allowing text entry efficiency to be improved.
Realizing that the procedural memory has a subtle
effect on users, many researchers have employed the
transfer effect of learning to conduct relevant
designs or studies (Carey, 2001; Jacob and Brad,
2008; Liang and Chang, 2009). Further, according to
the findings regarding the stimulus-response
compatibility effect (SRC effect), different hand
postures will affect encoding patterns, which will
vary with the relationship between visual stimulus
and finger reaction (Ehrenstein et al., 1989; Khan et
al., 2016; Lyons et al., 2004; Lyons et al., 2006).
Input accuracy is critical to usability of mobile
devices because people frequently use them for a
variety of purposes such as personal information
organizers, communicators, business appliances, and
entertainment devices. High input accuracy enables
users to finish their tasks quickly with few errors. In
large touch screen environments such as automatic
teller machines (ATMs) and information kiosks, a
number of studies have been conducted to
investigate usable touch key designs in terms of
input accuracy. Understanding the typing postures of
how users operate their mobile phones is crucial for
developing new ways of interaction for text entry
chording methods. Based on the observation by
(Gold et al., 2012; Mackenzie, 2002; Mackenzie et
al., 2009), three postures were found to occur most
often by mobile phone users: holding the phone in
one hand while using the index finger of another
hand, holding the phone in the palm of the hand
while using the thumb of the same hand, and using
both hands to hold the phone and typing with both
thumbs. Furthermore, this study tried to analyze the
relationship between the typing postures and phones
with different typing methods. Therefore, in this
stage, the main purpose was to observe the postures
when using phones with different typing methods.
However, to determine which of the above three
operating postures is suitable for the new chording
methods can be compared via the two perspectives.
First, the operating posture needs to avoid the
occlusion problem (fat finger problem) (Paul and
Donna, 1994; Taeil et al., 2013; Wigdor., 2004)
where the user’s finger is too big and induces the
error of touching neighbouring keys. Different hand
anthropometries were measured for mobile phone
and keypad design factors. Users with small hands
might find it difficult to hold large mobile phones
and users with large hands might find it difficult to
hold small mobile phones, thus hand breadth was
measured to test if it affects users` satisfaction
towards mobile phone design factors. Hand breadth
was measured at the distal ends of the metacarpal
bones (the joints of index finger to the little finger)
with the hand held straight and flat. Thumb length
might affect users` reach ability of the keys whereas
users with large thumbs might find it cumbersome
keying in messages via the tiny keys (Balakrishnan
and Yeow, 2008). Work-related Musculo-Skeletal
Disorders (WMSDs) result in considerable costs to
industry annually (Khan 2012). Various studies
shows that risks of WMSDs are associated with
certain jobs and certain work related factors
compared with other population groups not exposed
to risk factors. It is necessary to study repetitive
exertions combined with tapping force for wrist
abduction angle. So, the present study was designed
to look at the effects of repetitive force exertion for
abducted wrist postures.
II. PROBLEM FORMULATION
Based on the literature surveyed and
responses through questionnaire, it was observed
that the population was using touch screen mobile
phone with single handed and two handed posture
most of the time. Cradled form of holding was
found to be least applied by users. So, we have
selected one handed and two handed posture for our
study and experimental investigations.
In the past, ergonomists studied the
different postures while using the mobile phones that
are suitable as well as comfortable to fit the body
and the mind of the users. In the present study, it
was observed that wrist angle of abduction is the
important parameter that affect the performance of
mobile users. In this work, two sets of study were
undertaken on one handed and two handed postures.
First study explored the effect of wrist angle of
abduction (0o
, 5o
and 10o
) on two parameters
namely, response time and force applied and the
second study explored the effect of three distinct
tasks on the two parameters.
For developing an ergonomic database, the
study has been formulated for both one hand and
two hand postures as follows:
i. The angle of abduction has a significant effect
on mobile users’ performance in terms of
response time.
3. Imtiaz Ali Khan. Int. Journal of Engineering Research and Application www.ijera.com
ISSN : 2248-9622, Vol. 7, Issue 6, ( Part -5) June 2017, pp.01-10
www.ijera.com DOI: 10.9790/9622-0706050110 3 | P a g e
ii. The angle of abduction has a significant effect
on mobile users’ performance in terms of force
applied.
III. METHODOLOGY
The stated hypothesis was tested through a set of
experimental investigations. The experimental set up
and its design are summarized as follows:
3.1 Experimental set-up
Experimental investigations were conducted in an
isolated environment. The set up as shown in figure
3.1 comprised of the following sub-systems:
i. Touch screen mobile phone(4.5” size touch
screen)
ii. Oscilloscope
iii. Mica plate
iv. Touch sensors
v. Goniometer
vi. Lux meter
vii. Group of subjects
The 4.5” screen size of touch mobile phone
used in our experiments was selected on the basis of
users responses collected through questionnaire
based survey. All the experimental observations
were taken on Nokia Lumia 520 touch screen mobile
phone with screen size 4.5”. Performance of each
subject was measured through oscilloscope on the
basis of response variables namely, force applied
and motor action time. A working platform
comprising Mica plate and piezoelectric sensors
attached with oscilloscope was used to hold the
mobile phone and record the user performance for
analysis. Goniometer was used to maintain the
variable angle of Abduction. Lux meter was used to
measure the light intensity of the isolated
environment in which the experiments were
performed. Group of subjects for the study was
selected through stratified sampling.
Figure-3.1 Experimental set-up
3.2 Experiment design
To evaluate the touch screen mobile phone
users’ performance, the response variable was taken
as force applied and motor action response time. The
three distinct tasks (T1, T2 and T3) and three wrist
abduction angles (0o
, 5o
and 10o
) were taken as fixed
independent variables. The 6 x 3 combinations were
considered to conduct the full experiment. The
various tasks performed at different angle of
abductions during the experiment are shown in
figures 3.2 through 3.10. The figure 3.11 shows the
response time and applied force measurements
through a two-channel oscilloscope.
A. Three selected tasks
i. Task 1(T1)(Bluetooth icon)
Figure-3.2 Initial position for Task (T1)
Figure-3.3 Final position for Task (T1)
ii. Task 2(T2)(Settings icon)
Figure-3.4 Initial position for Task (T2)
4. Imtiaz Ali Khan. Int. Journal of Engineering Research and Application www.ijera.com
ISSN : 2248-9622, Vol. 7, Issue 6, ( Part -5) June 2017, pp.01-10
www.ijera.com DOI: 10.9790/9622-0706050110 4 | P a g e
Figure-3.5 Final position for Task (T2)
iii. Task 3 (T3)(Contacts icon)
Figure-3.6 Initial position for Task (T3)
Figure-3.7 Final position for Task (T3)
B. Three selected wrist angle of abductions
i. Wrist angle of abduction(0o
)
Figure-3.8 Experimental set up for 0o
wrist angle of
abduction
ii. Wrist angle of abduction(5o
)
Figure-3.9 Experimental set up for 5o
wrist angle of
abduction
iii. Wrist angle of abduction(10o
)
Figure-3.10 Experimental set up for 10o
wrist angle
of abduction
Figure- 3.11 Oscilloscope – Force applied on Y-axis
and Response time on X-axis
5. Imtiaz Ali Khan. Int. Journal of Engineering Research and Application www.ijera.com
ISSN : 2248-9622, Vol. 7, Issue 6, ( Part -5) June 2017, pp.01-10
www.ijera.com DOI: 10.9790/9622-0706050110 5 | P a g e
3.3 Procedure
To evaluate the touch screen mobile phone users’
performance in context with wrist angle of abduction
for both one hand and two hand postures,
experimental investigations were carried out as
follows:
i. Vary the wrist angle of abduction by varying the
inclination angle of mica plate and confirm the
wrist abduction angle of subject by goniometer.
ii. Provide the touch screen mobile phone above
the sensor point connected on the mica plate.
iii. Subject was asked to hold the mobile with the
pre-defined posture for one hand and two hands
and keep the finger on the reference point.
iv. Voice signal was given to each subject in terms
of words “start and press the concerned icon”.
v. As soon as the task was completed by pressing
icon, the force applied and motor action time
were recorded through the oscilloscope.
vi. The performance of each subject was recorded
in terms of force applied and response time by
changing the wrist abduction angle for three
distinct tasks for both one hand and two hands
postures.
vii. Each subject was imparted instructions so as to
get complete familiarity with the tasks and
posture for using touch screen mobile phone by
one hand and two hand postures.
3.4 Analysis
The collected data through the experimental
investigations as shown in tables 1 through 6 were
analyzed by MANOVA (Multi Variate Analysis of
Variance) using SPSS statistical software.
IV. EXPERIMENTATION AND RESULTS
4.1 Experimental Observations
i. Touch screen mobile phone used by single
hand
a. Wrist Angle of Abduction (0O
)
Table 1 -Experimental observations for 0o
angle of
abduction by single hand for three different tasks
Subject
Force applied
(mean)
( in milli-volts)
Motor action
response time (mean)
(in milli-seconds)
1 546.6 520.0
2 493.3 533.3
3 440.0 453.3
4 493.3 493.3
5 480.0 533.3
6 506.6 453.3
7 466.6 533.3
8 480.0 453.3
9 480.0 480.0
10 506.6 506.6
Mean 489.3 496.0
b. Wrist Angle of Abduction (5O
)
Table 2-Experimental observations for 5o
angle of
abduction by single hand for three different tasks
Subject
Force applied
(mean)
( in milli-volts)
Motor action response
time (mean)
(in milli-seconds)
1 520.0 493.3
2 573.3 493.3
3 493.3 546.6
4 493.3 493.3
5 520.0 546.6
6 506.6 520.0
7 493.3 506.6
8 533.3 480.0
9 533.3 546.6
10 506.6 520.0
Mean 517.3 514.6
c. Wrist Angle of Abduction (10O
)
Table 3-Experimental observations for 10 angle of
abduction by single hand for three different tasks
ii. Touch screen mobile phone used by two
hands
a. Wrist Angle of Abduction (0O
)
Table 4-Experimental observations for 0o
angle of
abduction by two hands for three different tasks
Subject
Force applied
(mean)
( in milli-volts)
Motor action response time
(mean)
(in milli-seconds)
1 280.0 373.3
2 226.6 320.0
3 213.3 373.3
4 240.0 293.3
5 253.3 306.6
6 240.0 320.0
7 253.3 293.3
8 186.6 306.6
9 240.0 306.6
10 240.0 306.6
Mean 237.3 320.0
Subject
Force applied
(mean)
( in milli-volts)
Motor action response
time (mean)
(in milli-seconds)
1 493.3 626.6
2 500.0 600.0
3 640.0 560.0
4 520.0 520.0
5 413.3 533.3
6 573.3 573.3
7 493.3 466.6
8 466.6 546.6
9 600.0 493.3
10 586.6 453.3
Mean 528.6 537.3
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b. Wrist Angle of Abduction (5O
)
Table 5-Experimental observations for 5o
angle of
abduction by two hands for three different tasks
Subject
Force applied
(mean)
( in milli-volts)
Motor action response
time (mean)
(in milli-seconds)
1 253.3 320.0
2 293.3 360.0
3 226.6 333.3
4 253.3 346.6
5 266.6 360.0
6 253.3 320.0
7 253.3 320.0
8 240.0 346.6
9 226.6 360.0
10 266.6 400.0
Mean 253.3 346.6
c. Wrist Angle of Abduction (10O
)
Table 6-Experimental observations for 10o
angle of
abduction by two hands for three different tasks
Subject
Force applied
(mean)
( in milli-volts)
Motor action response
time (mean)
(in milli-seconds)
1 266.6 440.0
2 226.6 400.0
3 280.0 360.0
4 293.3 346.6
5 253.3 346.6
6 320.0 400.0
7 226.6 386.6
8 280.0 413.3
9 346.6 440.0
10 280.0 360.0
Mean 277.3 389.3
4.2 Results and Analysis
The MANOVA (Multi Variate Analysis of
Variance) is done to know the significant effect of
angle of abduction for both single hand and two
hands over force applied and reaction time while
using the touch screen mobile phone. For analysis by
MANOVA the force applied and response time is
taken as response variables and the three
independent tasks and conditions were selected as
follows. The three fixed (independent) tasks were to
press Bluetoooth, contacts, and settings icons on the
touch screen mobile phone and the three conditions
were the wrist angle of abductions (00
, 50
and 100
)
for both single-hand and two hand while using touch
screen mobile phone. The results are presented in
tables 7 through 12 and in figures 4.1 through 4.4.
Table 7-Between-Subjects Factors
N
Condition 1_H_0 30
1_H_10 30
1_H_5 30
2_H_0 30
2_H_10 30
2_H_5 30
Tasks 1 60
2 60
3 60
Table 8- Summary of MANOVA Tests of Between-Subjects Effects
Source
Depend
ent
Variabl
e
Type III Sum
of Squares df
Mean
Square F Sig.
Corrected
Model
Force_
applied
4213317.778a
17 247842.
222
72.794 .000
Reactio
n_time
1680720.000b
17 98865.8
82
40.282 .000
Intercept Force_
applied
26526722.222 1 265267
22.222
7791.2
27
.000
Reactio
n_time
33904080.000 1 339040
80.000
13814.
037
.000
Conditio
n
Force_
applied
2992917.778 5 598583.
556
175.81
1
.000
Reactio
n_time
1309413.333 5 261882.
667
106.70
3
.000
Case Force_
applied
838751.111 2 419375.
556
123.17
6
.000
Reactio
n_time
331360.000 2 165680.
000
67.505 .000
Conditio
n * Case
Force_
applied
381648.889 10 38164.8
89
11.210 .000
Reactio
n_time
39946.667 10 3994.66
7
1.628 .103
Error Force_
applied
551560.000 162 3404.69
1
Reactio
n_time
397600.000 162 2454.32
1
Total Force_
applied
31291600.000 180
Reactio
n_time
35982400.000 180
Corrected
Total
Force_
applied
4764877.778 179
Reactio
n_time
2078320.000 179
a. R Squared = .884 (Adjusted R Squared = .872)
b. R Squared = .809 (Adjusted R Squared = .789)
4.2.1. Profile plots
i. Force applied
Figure 4.1- Line Diagram between the conditions
for the force applied for three different tasks
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ii. Reaction time
Figure 4.2- Line Diagram between the conditions
for the response time for three different tasks
4.2.2. Bar graphs
i. Applied force
Figure 4.3- Bar graph between the conditions for the
force applied for three different tasks
ii. Reaction time
Figure 4.4- Bar graph between the conditions for the
response time for three different tasks
4.2.3. POST-HOC Tests
i. Post- Hoc test between the conditions for
the:
a. Force applied
Table 9-Post- Hoc test between the conditions for
the force applied
Condition N
Subset
1 2 3 4
Tukey HSD
2_H_0 30 237.3333
2_H_5 30 253.3333
2_H_10 30 277.3333
1_H_0 30 489.3333
1_H_5 30 517.3333
1_H_10 30 528.6667
Sig. .090 .101
Means for groups in homogeneous subsets are
displayed.
Based on observed means.
The error term is Mean Square (Error) = 3404.691.
a. Uses Harmonic Mean Sample Size = 30.000.
b. The group sizes are unequal. The harmonic
mean of the group sizes is used. Type I error levels
are not guaranteed.
c. Alpha = .05.
b. Reaction time
Table 10-Post – hoc test between the conditions for
reaction time
Conditio
n
N
Subset
1 2 3 4 5
Tuke
y
HSD
2_H_0
3
0
320.000
0
2_H_5
3
0
346.666
7
2_H_10
3
0
389.333
3
1_H_0
3
0
496.000
0
1_H_5
3
0
514.666
7
514.666
7
1_H_10
3
0
537.333
3
Sig. .300 1.000 .691 .487
Means for groups in homogeneous subsets are
displayed.
Based on observed means.
The error term is Mean Square (Error) = 2454.321.
a. Uses Harmonic Mean Sample Size = 30.000.
b. The group sizes are unequal. The harmonic mean
of the group sizes is used. Type I error levels are not
guaranteed.
c. Alpha = .05.
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ii. Post- Hoc test between the tasks for the:
a. Force applied
Table 11-Post- hoc test between the tasks for force
applied
Tasks N
Subset
1 2
Tukey HSD
3 60 332.0000
2 60 339.3333
1 60 480.3333
Sig. .771 1.000
Means for groups in homogeneous subsets are
displayed.
Based on observed means.
The error term is Mean Square (Error) = 3404.691.
a. Uses Harmonic Mean Sample Size = 60.000.
b. The group sizes are unequal. The harmonic
mean of the group sizes is used. Type I error levels
are not guaranteed.
c. Alpha = .05.
b. Reaction time
Table 12-Post- hoc test between the tasks for the
reaction time
Tasks N
Subset
1 2
Tukey HSD
3 60 402.6667
2 60 404.6667
1 60 494.6667
Sig. .973 1.000
Means for groups in homogeneous subsets are
displayed.
Based on observed means.
The error term is Mean Square (Error) = 2454.321.
a. Uses Harmonic Mean Sample Size = 60.000.
b. The group sizes are unequal. The harmonic
mean of the group sizes is used. Type I error levels
are not guaranteed.
c. Alpha = .05.
4.2.4. Results from MANOVA (Multi Variate
Analysis of Variance) Test
Angle of Abduction has significant effect over
force applied and reaction time (p<0.05).
Tasks have significant effect over force applied
and reaction time (p<0.05).
Interaction was found to be significant between
angle of abduction and task for the dependent
variable force applied. But there was no
interaction found for the case of reaction
time(p<0.05).
4.2.5. Results from POST-HOC Test
To further investigate where the
significance lies for the angle of abduction and tasks
over force applied and reaction time, Post-Hoc
analysis was conducted (Tukey’s Post-Doc
Analysis). The following general conclusions are
drawn:
Two handed cases were significantly different
from the single handed case; however the angle
of abduction may be significant (p<0.05).
Reaction time was significantly different for 0
and 10 degree angle of abduction for both the
single handed and double handed conditions.
(p<0.05).
Task 1 was found to be significantly different
from Task 2 and Task 3(p<0.05).
V. CONCLUSION
Results obtained by experimental
observations and analysis indicates that the touch
screen mobile phone should be used by the mobile
user by two hands at 0o
wrist angle of abduction for
optimum performance, ergonomically. The less
motor action response time will help the mobile user
to response fast in an efficient manner and less
applied force will give the less discomfort and more
ergonomically correct posture and task execution
while using the touch screen mobile phone. The
results of this work can be directly applied to the
practical field. By applying the correct posture, one
can enhance the users’ performance with less
response time and less discomfort while using the
touch screen mobile for longer hours of time.
Through the present experimental analysis
and results, an attempt has been made to develop a
better understanding of human performance in the
context of using the touch screen mobile phone by
using one hand and two hand postures at different
wrist angle of abductions. One of the two studies
explored the effect of wrist angle of abduction on
two performance parameters that is, response time
and force applied for both one hand and two hand
postures. The second study explored the effect of
three distinct tasks on two performance parameters
response time and force applied.
On the basis of the results obtained, following
concluding remarks were drawn:-
i. Wrist abduction angle have a significant effect
over force applied and reaction time.
ii. Different tasks have significant effect over force
applied and reaction time.
iii. Two handed posture was significantly different
from the single handed posture for different
wrist abduction angles used by the mobile users.
iv. For both the postures that is; single hand and
two hands while using the touch screen mobile
phone, the performance parameters, response
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time and force applied was found to be least for
00
wrist angle of abduction.
v. For all the three distinct tasks, the least response
time and force applied was found for the two
hand posture for 0o
wrist angle of abduction.
vi. Analysis of results indicates that the touch
screen mobile phone should be used by the
mobile user by two hands at 0o
wrist angle of
abduction for optimum performance,
ergonomically. This will also help to reduce the
musculoskeletal injuries in mobile phone users.
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