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The importance of measuring and simulating a radial pulsation is steadily increased in medical science area, because the radial pulsation is a surrogate maker to estimate a central aortic pressure waveform which is clinically imperative for predicting cardiovascular diseases. Due to technical limits, mathematical relationship between the central and radial pressures has not been reliably demonstrated...
Green technology for not only reducing energy consumption but also environmental pollution has become a critical factor in ICT industries. However, for the telecommunications sector in particular, most network elements are not usually optimized for power efficiency. In this work, we propose a green routing method in an IP network for the reduction of unnecessary energy consumption. In addition, it...
Recently, along with the development of ICT technology, there is a significant increase in Internet of Everything (IoE) more advanced than Internet of Things (IoT) is one of the technologies that not only connects people and things, data and services, but also provides users with more intelligent and smart services However, it is difficult to efficiently process data generated from various kinds of...
This paper proposes an energy-aware packet delivery operation through network node clustering for green communications. Energy consumption has become a key factor for the evaluation of performance index in telecommunication industry. In order to prevent a waste of energy in wired network, the proposed algorithm configures energy-aware cluster consisting of one header node and multiple member nodes...
This paper proposes an energy-aware packet delivery operation through network node clustering for green communications. Energy consumption has become a key factor for the evaluation of performance index in telecommunication industry. In order to prevent a waste of energy in wired network, the proposed algorithm configures energy-aware cluster consisting of one header node and multiple member nodes...
In the paper, we propose a navigation method using fuzzy line tracking and D∗Lite algorithm based on a QR code map. Path planning using D∗Lite is implemented on the server. Fuzzy line tracking is developed by using image processing technique. At first, we design a virtual map which is composed of QR code nodes. We generate an optimized path for navigation on the map. Accuracy of the navigation is...
Recently, many new services are being deployed on the cloud due to its flexibility of on-demand allocation and deallocation of computing resources. As the services require more advanced features such as fault-tolerance and high performance, much interest is focused on the multi-clouds. Hence, the needs for effectively managing the quality of services on multi-clouds emerge rapidly. Among the many...
We successfully fabricated an eco-friendly Cu-Zn wetting layer for Sn-Ag-Cu (SAC) solders by electroplating in a cyanide-free solution. The reliabilities of solder joints formed on the Cu-Zn solder wetting layer were evaluated through the drop impact test and thermal cycling (T/C) test. First, boardlevel drop impact test was performed with the SAC solder joints formed on electroplated Cu or Cu-Zn...
In this study, the interfacial reaction between Sn-3.0Ag-0.5Cu solder on Cu-35wt%Zn, Cu-20wt%Zn-15wt%Ni and Cu-25wt%Zn-10wt%Ni substrates were studied after reflow at 250°C for 90s and isothermal aging at 150°C for 50, 100, 250, and 500h. Addition of Zn or Ni into Cu wetting layer was effective to suppress the excessive growth of IMC and avoid the microvoids formation after thermal aging. In the initial...
In this paper, we propose DULEX-II, a wearable hand robot capable of assisting stroke survivors with hand function rehabilitation. DULEX-II is a robotic orthosis that has three degrees of freedom for assisting motions of the wrist, and all fingers, excluding the thumb. Each exoskeleton mechanism enclosing the wrist and fingers is designed to fit the user's motion trajectory. DULEX-II is actuated by...
We present a hand-held system for real-time, interactive acquisition of residential floor plans. The system integrates a commodity range camera, a micro-projector, and a button interface for user input and allows the user to freely move through a building to capture its important architectural elements. The system uses the Manhattan world assumption, which posits that wall layouts are rectilinear...
Since the eco-era is getting closer, the importance of noise reducing in the passenger cars of high-speed train is very important. The active noise is best choice to reduce low frequency noise because since the passive one too heavy for high speed trains where weight so critical. Also ANC able to reduce the ambient noise when the environmental-factor changes. To reduce a three-dimensional closed-space...
Expression has become one of important parts in human-robot interaction as an intuitive communication channel between humans and robots. However it is very difficult to construct robot's behaviors one by one. Developers consider how to make various motions of the robot easily. Therefore we propose an useful behavior expression method according to the sentence types and emotions. In this paper, robots...
Some applications require that the communication link between the master and slave transceivers be maintained for a certain lifetime and be recovered as soon as possible whenever the link is broken. In these cases especially for mobile applications, it is most important to reduce the power consumption for both communication. While the master and slave are in linked status, neither of the receivers...
We developed an Au/Ni-Zn/Ti under bump metallurgy (UBM) for Pb-free solders. Au/Ni-Zn/Ti and Au/Ni/Ti UBM stacks were deposited on SiO2/Si wafer using conventional magnetron sputtering and Sn solder was electroplated on UBM stacks. Then, Sn solder on UBM were reflowed at 260°C for 15 s and aged at 150°C up to 1000 h. The measurement of film stress using a curvature method showed Ni-Zn films having...
This paper presents a novel method to establish human-robot affective relationship for long-term interaction. At first, in order for a robot to estimate human intimacy, a fuzzy space model to formally represent human intimacy is proposed. Proxemic, tactile and oculesic behavioral features which are dominantly used for intimacy exchange in human-human communication are analyzed for developing a 3 dimensional...
In order to achieve a believable interaction between humans and robots, synthesizing the reasonable and natural emotion is important. Furthermore, improving the adjustability of parameters' values in the model is essential for the designer of a robot. In this paper we developed a hybrid emotion generation architecture and defined the generalized context inputs of emotion generation model for convenient...
Multi-view stereo methods frequently fail to properly reconstruct 3D scene geometry if visible texture is sparse or the scene exhibits difficult self-occlusions. Time-of-Flight (ToF) depth sensors can provide 3D information regardless of texture but with only limited resolution and accuracy. To find an optimal reconstruction, we propose an integrated multi-view sensor fusion approach that combines...
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