Context information brings new opportunities for efficient and effective applications and services on mobile devices. Many existing work exploit the context dependency of mobile usage for specific applications, and show significant, quantified, performance gains by utilizing context. In order to be practical, such works often pay careful attention to the energy and processing costs of context awareness while attempting to maintain reasonable accuracy. These works also have to deal with the challenges of multiple sources of context, which can lead to a sparse training data set. Even with the abundance of such work, quantifying context-dependency and the relationship between context-dependency and performance achievements remains an open problem, and solutions to manage the and challenges of context awareness remain ad-hoc. To this end, this dissertation methodologically quantifies and measures the context dependency of three principal types of mobile usage in a methodological, application agnostic yet practical manner. The three usages are the websites the user visits, the phone numbers they call, and the apps they use, either built-in or obtained by the user from the App Store . While this dissertation measures the context dependency of these three principal types of mobile usage, its methodology can be readily extended to other context-dependent mobile usage and system resources. This dissertation further presents SmartContext, a framework to systematically optimize the energy cost of context awareness by selecting among different context sources, while satisfying the system designer’s cost-accuracy tradeoffs. Finally, this thesis investigates the collective effect of social context on mobile usage, by separating and comparing LiveLab users based on their socioeconomic groups. The analysis and findings are based on usage and context traces collected in real-life settings from 24 iPhone users over a period of one year. This dissertation presents findings regarding the context dependency of three principal types of mobile usage; visited websites, phone calls, and app usage. The methodology and lessons presented here can be readily extended to other forms of context and context-dependent usage and resources. They guide the development of context aware systems, and highlight the challenges and expectations regarding the context dependency of mobile usage.

This thesis discusses the future of smart business applications on mobile phones and the integration of voice interface across several business applications. It proposes a framework that provides speech processing support for business applications on mobile phones. The framework uses Gaussian Mixture Models (GMM) for low-enrollment speaker recognition and limited vocabulary speech recognition. Algorithms are presented for pre-processing of audio signals into different categories and for start and end point detection. A method is proposed for speech processing that uses Mel Frequency Cepstral Coeffcients (MFCC) as primary feature for extraction. In addition, optimization schemes are developed to improve performance, and overcome constraints of a mobile phone. Experimental results are presented for some prototype applications that evaluate the performance of computationally expensive algorithms on constrained hardware. The thesis concludes by discussing the scope for improvement for the work done in this thesis and future directions in which this work could possibly be extended.

This project includes an implementation of an intelligent voice recognition assistant for Android where functionality on current existing applications on other platforms is compared. Until this day, there has not been any good alternative for Android, so this project aims to implement a voice assistant for the Android platform while describing the difficulties and challenges that lies in this task.

This thesis discusses the future of smart business applications on mobile phones and the integration of voice interface across several business applications. It proposes a framework that provides speech processing support for business applications on mobile phones. The framework uses Gaussian Mixture Models (GMM) for low-enrollment speaker recognition and limited vocabulary speech recognition. Algorithms are presented for pre-processing of audio signals into different categories and for start and end point detection. A method is proposed for speech processing that uses Mel Frequency Cepstral Coeffcients (MFCC) as primary feature for extraction. In addition, optimization schemes are developed to improve performance, and overcome constraints of a mobile phone. Experimental results are presented for some prototype applications that evaluate the performance of computationally expensive algorithms on constrained hardware. The thesis concludes by discussing the scope for improvement for the work done in this thesis and future directions in which this work could possibly be extended.

ABSTRACT   Title: Mobile Marketing: Study of ICA – Correlation between mobile marketing and customer loyalty Level: Master Degree in Business Administration Authors: Bolor Amarsanaa and Joshua Anjorin Supervisor: Ernst Hollander Date: 2012 – January Aim: Having loyal customers is a key for successful organizations. There is increased complexity and competitiveness in the market place as regards to what companies need to do and how to do them in meeting the needs of customers. Is that why companies today are exploring the potentials of mobile phones to ultimately earn customers’ loyalty? However, there is not much research done in this area, especially in finding correlation between mobile marketing and customer loyalty. Thus, this research aims to examine correlation between mobile marketing and customer loyalty. Method: Data collection methods included literature reviews, a questionnaire and interviews. These were analysed by hypothesising, comparing with theories, and the use of descriptive analysis, correlation, and other methods presented as discussions, tables, and charts. Results & Conclusions: The theoretical and empirical research findings show that customer loyalty is positively related with mobile marketing. Use of mobile marketing such as mobile application, mobile web and SMS can perhaps enhance customer loyalty by meeting the demand of customers; increasing interaction and communication with customers; and increasing customer satisfaction. However, due to the research limitations and due to the fact that mobile marketing is a relatively new field of study, it needs some more time and more extensive research to make a general assumption about relationship between them and the strength of such relationship. Suggestions for future research: For further research, more extended research with broader samples is essential. It will be also crucial to investigate how much of an effect mobile marketing has on customer loyalty by scrutinizing company’s cost and profit measurements of mobile marketing besides opt-in and opt-out measurements of customers. Contribution of the thesis: We hope that this research has scratched the surface to this new field of study and made an addition to existing theory. It also stirs up interests in the emerging research on mobile marketing’s untapped potentials. Key words: Mobile Marketing, Customer loyalty, mobile phone, customer satisfaction, communication with customers.

The advance of mobile phone devices and wireless communication have dramatically change the way individuals do for their personal lives and businesses. Nowadays, people can not only talk with their peers located at different places, they can also get the desired information ubiquitously. Business strategies that are based on simple mobile phones have to be adapted to a complex mobile business ecosystem. The mobile phone market in Guatemala has almost saturated, and the mobile operators have to come up with creative ideas to increase their revenues. This thesis explores what the user¡¦s intentions toward mobile services in Guatemala. Understanding users¡¦ intension will allow entrepreneurs to create new business strategies that would fill an existing void that exists on the Guatemalan mobile market.

This paper proposes novel PIFA and monopole designs for dual-band or multi-band wireless communications, especially for mobile phones and CF (compact flash) card. The dual-frequency designs for mobile phone mainly utilize one or more metal branch strips to excite two resonant modes. By tuning the dimensions of branch strips, the ratio of the antenna¡¦s first two resonant frequencies can be achieved to be about 2.0, which makes it very promising for 900/1800 MHz operations. In addition, the broadband and quad-band (AMPS/GSM/DCS/PCS) designs for mobile phone application are also proposed. The broadband antenna design, unlike the above-mentioned dual-frequency designs for operating at two separate resonant modes, is more suitable to cover several nearby communication bands (DCS/PCS/UMTS/WLAN 2.45 GHz). The quad-band antenna design utilizes a £k-shape matching bridge to achieve a wider bandwidth both in lower and higher bands. For CF Card application, the triangular chip antenna having one longer and one shorter strip lines can generate the lower and higher modes covering the WLAN 2.4 and WLAN 5.2/5.8 GHz bands. All the antenna designs proposed are very promising to be concealed within the housing of the mobile phones or CF card.

In this dissertation, EMC antennas for mobile communication device applications are proposed. This kind of EMC antennas can overcome the problem that happens to the conventional antenna; in practical application, when electronic components are placed very close to the conventional antenna, large degradation of the antenna performance will occur. In the proposed EMC antennas, by adding a vertical antenna ground plane functioning as a shielding metal wall, EM coupling between the EMC antenna and nearby components can be reduced. Thus, it leads to no degradation or only negligible variations of the antenna performance. Also, the concept of EMC antennas can be applied to the monopole antenna. One of the examples suitable for the future thin (< 10 mm) mobile communication device is demonstrated. Further, the user¡¦s hand effects on EMC antenna performance are analyzed. Even when the mobile phone is hand-held at the bottom, large radiation efficiency drops are observed, especially for the GSM band.

In this thesis, the study mainly focuses on the terrestrial DTV signal reception antenna. These antennas are designed based on the use of planar dipole antenna, but with different techniques in order to overcome the narrow-bandwidth problem of conventional dipole antenna. In ¡§Broadband Three-arm Dipole Planar Antenna for DTV Signal Reception,¡¨ a metal plate is added for achieving wideband operation. In ¡§End-fed Modified Dipole Antenna for DTV Signal Reception,¡¨ two arms of different lengths are extended in the same direction to wideband operation. In ¡§Internal DTV Antenna for Folder-Type Mobile Phone,¡¨ two system ground planes are regarded as the two arms of the dipole. With the use of an internal matching circuit, good impedance matching can be obtained for receiving DTV signal over a wide bandwidth.

The applications of mobile phone provide limitless convenience to people¡¦s life. 3G mobile phone provides a great contribution to communications due to wide range bandwidth. 3G mobile phone is able to economize on communicating time and space. Therefore, it plays an important role in the currently mobile market. In addition the governments have devoted much resource on 3G mobile learning as the hardware and software. The study aims to examine the female consumers of 3G mobile phone and consider the market of mobile phone industry, mobile phone technology and further development of mobile phone. Related literatures are sourced from the develop background of the current mobile market, demand of the mobile phone market and consumer characteristics in order to filter out the priority setting of those six categories as follows: network connection, hardware design, safe internet, business model and the mobile service of convenient and appreciations. Beside this, it also presents that the priority setting might change as a matter of time. Research method is Analytic Hierarchy Process (AHP). In the project, questionnaire results provide the bulk of the data, with the interviews intended to provide a more contextual element to the work. The questionnaire was developed and sent out to female consumers of 3G mobile phone; and the interviews were carried out with some professors of 3G mobile leaning. The results of this study suggested that the main female consumers of 3G mobile phone are young ladies who have higher education and these consumers need to receive a lot of information to help them handle works. In addition it can help them to develop the commutations. In other words, 3G mobile phone can bring more convenient in life and work. Meanwhile, the key point to promote the 3G mobile phone is the service of applications; especially the service refers to the characteristics of 3G mobile phone. For female consumers, service design should focus on female characteristics of life and special demands. For example, the service of fixing and tracking design is better for married women who have children; the service of providing life information is suit for young business ladies. After developing the service of applications, users will be used to 3G mobile phone. Then, it could be successful to expand the 3G mobile phone market of the female consumers.