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With fast-growing consumer demands and rapidly-developing mobile technologies, portable mobile devices are becoming a necessity of our daily lives. However, existing mobile devices rely on the wireless infrastructure to access Internet services provided by central application providers. This architecture is inefficient in many situations and also does not utilize abundant interdevice communication...
In this paper, the electromagnetic bandgap (EBG) structure is applied in a mobile phone to reduce its peak SAR. From simulation result with SEMCAD X, it can be seen that this type of EBG structure is a useful method to suppress peak SAR of mobile phone. With this method, the peak SAR suppression is not caused by total radiated power (TRP) decreasing but from the reduction of the radiation pattern...
Human rights at poor working condition is the severe problem in modern manufacturing system. The industrial dual-arm robot is being developed to meet these social issues fundamentally. The industrial dual-arm robot can assemble the complex product in such way human do. We arm developing the dual-arm robot which has the function of assembly of IT products such as the mobile phone and LCD/LED panel...
Recently, researches for activity recognition with sensor data have been increased by the spread of smart phones with 3-axis accelerometers and gyroscopes. However, collecting various sensor data from many people is difficult. To solve this problem, we developed activity collecting platform using various client software. Moreover, annotating continuous activity data is also an important task. However,...
Although recent studies show that both topological structures and human dynamics can strongly affect information spreading on social networks, the complicated interplay of the two significant factors has not yet been clearly described. In this work, we find a strong pair wise interaction based on analyzing the weighted network generated by the short message communication dataset within a Chinese tele-communication...
Several studies abound on electromagnetic field (EMF) radiation and its adverse impact on human health with majority of the conclusions resulting from these studies being positive. To this end, a number of sources have been identified to emit levels of EMF radiation such as power transmission lines, base transmitter stations (BTS), mobile phones and many household appliances, some of which have been...
CAPTCHAs are popularly used techniques to distinguish humans and automated applications. Such techniques are often useful in banking transactions, email creation, online surveys, data downloads etc. Starting from a very primitive stage of providing the users with a simple alphabetical string to asking using to do complex calculations, CAPTCHAs have come a long way in terms of sophistication of human-bot...
This paper analyzes the effects of electromagnetic (EM) absorption towards human head with variations of human head dielectric properties. The human head exposed to 900, 1800 and 1900 MHz operational frequencies. Specific absorption rate (SAR) was the parameter used to measure the interactions of EM waves towards human head. The mobile phone attached with helical antenna together with human head simulated...
By pooling together the processing power of mobile devices within a crowd to form a 'mobile cloud', these devices be efficiently utilized to help realize the full potential of mobile computing. However, the dynamic nature of mobile computing makes sharing and coordinating work non-trivial. Although never been used before in the mobile computing domain, the concept of work stealing possesses useful...
In modern life, people are involved in multiple online and offline social communities. Previous works on content sharing and information dissemination are single-community oriented. The complementary features as well as the joint-effect of distinct forms of social communities, however, has not been well explored. In this paper, we present hybrid social networking (HSN), which highlights the interweaving...
Crowd sourcing has become a term used to describe a broad variety of effective approaches that engage potentially large and open crowds of participants for the undertaking of a task. The emergence of Heterogeneous Networks (Het Nets) that brings about a significant expansion of existing mobile network capacity will enable and accelerate new forms of mobile and ubiquitous crowd sourcing. This paper...
Mobile Human Computer Games (HCGs) are applications that aim to generate useful computations as a byproduct of gameplay. As user participation in HCGs is critical for success, the game mechanics should engage users so that they remain motivated to contribute their time and effort. In this paper, we investigate user perceptions of engagement and information quality of a mobile HCG by comparing these...
Opportunistic networks, as opposed to classic ones, rely on human-carried devices. This leads to a high mobility of all the nodes in the network and a very dynamic topology. Developing good forwarding algorithms for optimum routing in opportunistic networks presents a specific set of challenges. The most notable forwarding solutions rely on social human mobility patterns. They depend on several key...
GPS is the premier method of localization and way finding in outdoor environments. Indoor environments prevent GPS from functioning properly or at all. RF-based solutions have been proposed using varieties of radio triangulation and spectral fingerprinting. Such technically attractive methods have not seen widespread adoption in places where the demand is greatest: supermarkets, shopping malls, airports,...
It is a fact that mobile devices have emerged as the core interaction platforms for Human-to-Machine communication. Mixed Reality has reached mobile devices indeed. However, there are still issues regarding its consumption beyond stand-alone applications, such as Layar and Wikitude. This article states the benefits of consuming and integrating Mixed Reality with mobile services through our tailored...
The paper deals with impact of selected types of electromagnetic fields on biological systems. Some effect of high-frequency EM field radiated by mobile phone are analyzed and experimentally investigated. Laser-tissue interactions in humans and the effects of soft lasers on the skin and plants are investigated.
Context-aware service provisioning for mobile phones is challenging because of diverse user contexts and mobile applications. The context recognition process generally reduces the device performance due to the competitive use of limited resources in the mobile phone. While extensive attempts have been made to provide appropriate services based on user context, previous work is limited to supporting...
Human Computation Games (HCGs) are applications that harness human intelligence to generate content using the element of fun. Originating in the Web environment, HCGs have now appeared on mobile devices with the advent of global positioning systems, wireless Internet access and multimedia capabilities. In this research, we study usability and playability factors that influence a mobile HCG, known...
Due to the concern of the negative effects on human health caused by excessive use of mobile phones, numerous research have been undertaken in this area. The effect of mobile phone generated electromagnetic fields (EMF) and Radio Frequency (RF) radiation is a popular research area. A brief overview of mobile phone generated EMF and its effect on humans is presented in this paper. Subsequently, a result...
In this paper, we present an augmented reality learning system that enables users to experience an interactive flower garden with the assistance of interactive agents in the augmented picture. We develop an interactive agent that generates problem-solving peer support to a user's action. We overlay virtual flower garden over a physical book and offer a collaborative environment that allows a learner...
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