Applied Mechanics and Materials Vols. 284-287

Abstract: In this paper, we propose a method for multiple sequence alignment, LemK_MSA, which integrates Lempel-Ziv based sequence vectorization and k-means clustering analysis. LemK_MSA converts multiple sequence alignment into corresponding 10-dimensional vector alignment by 10 types of copy modes. Then it uses k-means algorithm and NJ algorithm to divide the sequences into several groups and calculate guide tree of each part with the vectors of the sequences. A complete guide tree for multiple sequence alignment could be constructed by merging guide tree of every group. Thus, the time efficiency of processing multiple sequence alignment, especially for large-scale sequences, can be improved. The high-throughput mouse antibody sequences are used to validate the proposed method. Compared to ClustalW, MAFFT and Mbed, LemK_MSA is more than ten times efficient while ensuring the alignment accuracy at the same time. LemK_MSA also provides an effective method to analyze the evolutionary relationship and structural features among high-throughput sequences.

Abstract: This paper designs a web-based Android supervisory control system. Android controller is used as a local controller to fit into a supervisory control framework. The framework includes a central server, a SMS device attached to the server, multiple local controllers, a remote control program and a ladder logic computer-aided design program. The Android controller contains an Android mobile phone, a Wi-Fi wireless access point, a switch hut (or NAT) and multiple data acquisition modules. The Android mobile phone enters TCP/IP LAN through the Wi-Fi access point. The data acquisition modules with TCP/IP interface are plugged into the LAN, and read/written by the Android mobile phone with Modbus TCP. The Android controller communicates with supervisory server with a specific m2m protocol which is based on http protocol. Once an Android controller is connected to the supervisory control framework, it can be monitored and controlled remotely with any browser. A web-based home security system is constructed to demonstrate the usage of the web-based Android supervisory control system. The control laws for the home security system are partially implemented with ladder logics designed with a computer-aided program in the framework. With a supervisory server serving multiple Android controllers, Cloud home security service is formed.

Abstract: This paper designs a web-based Arduino supervisory control system. Arduino controller is utilized as a local controller to fit into a supervisory control framework. The framework includes a central server, a SMS device attached to the server, multiple local controllers, a remote control program and a ladder logic computer-aided design program. The Arduino controller contains an Arduino USB board and an Ethernet shield. The USB board provides basic input/output and processing power, while the Ethernet shield provides TCP/IP connection capability. The Arduino controller communicates with supervisory server with a specific m2m protocol which is based on http protocol. In this paper, the http protocol and m2m protocol is fulfilled based on TCP connection in an Arduino controller. Once an Arduino controller is plugged into the supervisory control system, it can be monitored and controlled remotely with any browser. The web-based Arduino supervisory control system is used to provide remote supervisory control service of water pumping systems of multistorey buildings scattered in big Taipei area by a small company.

Abstract: 3D virtual store with an internet connection used at home can provide the elderly a new channel to buy something which they need. However, most virtual environments (VEs) more often lack subdued response to pleasantness. A further confounding factor is that some users exhibit symptoms that parallel those of classical motion sickness, called cybersickness, both during and after the VE experience. The study investigated the factors that contribute to cybersickness among the elderly when immersed into a 3D virtual store. The results of the first experiment showed that the rate of simulator sickness questionnaire (SSQ) scores increases significantly with navigational rotating speed and duration of exposure. In applying these findings, a warning system with fuzzy control for combating cybersickness was developed. The results of the second experiment showed that the proposed system can efficiently determine the level of cybersickness based on the associated subjective sickness estimates and combat cybersickness induced within a 3D virtual store.

Abstract: RFID (Radio Frequency Identification) is a new technology of auto identification. This paper just begins to introduce how to design a Smart Objects-search system by the use of the RF chip NRF24L01 on the basis of RFID. A method of hardware and software designation in RF wireless transceiver and a simple way of power supply are proposed. This paper also analyze the strongpoint and shortcoming of these methods, and point out the area for further improvement. In the end, this paper illustrates how the system works. The results show that modular design method is workable and reliable for RF Circuit designation.

Abstract: With advances in technology, 3D video technology becomes possible and attractive. However, there are still many pre-recorded 2D videos/images which need to get transferred to 3D. Hence this paper presents a high quality view synthesis algorithm and architecture for 2D-to-3D video conversion. During the process of view synthesis, the monocular depth information together with the intermediate view is synthesized to the left-eye and right-eye view. The proposed view synthesis algorithm consists of two parts: 3D image warping and inpainting (hole filling). 3D image warping transforms a 2D camera image plane to a 3D coordinate plane. However the integer grid points of the reference are warped to irregularly spaced points in the virtual view, resulting in occlusion problems. Thus inpainting is needed to fix the virtual images. The proposed algorithm shows an improved PSNR gain of 0.2~1.5dB. We adopt hardware/software co-design to accomplish the proposed view synthesis algorithm. For this we implemented the image inpainting on a FPGA device and the remaining algorithm in software.

Abstract: The main purpose of this paper is to study the application of IEC61850 in the smart grid. Smart grid is going through significant development due to the inclusion of microgrid in a view to increasing power capability and decreasing power losses and pollution. IEC61850 provides one feasible solution for integrating various functions of intelligent devices in the smart grid. The message interchange via IEC61850 is based on TCP/IP network protocol and the broadcasting mode. It is found that the information communication among Intelligent Electronic Devices (IEDs) can be achieved by the proposed network protocol based on IEC61850 and GOOSE application.

Abstract: In traditional clothing store, it’s necessary to try clothes before purchasing. But in many situations, people do not like to try it, which were caused in wearing on and off is considered as an inconvenient action. Besides, females’ make-up may stain the clothes while fitting. The proposed method provides a smart dressing system which can enhance the willingness to try dressing but also avoid staining the clothes when wears on and off. This system is composed with three stages: contour initialization, attaching the control points, and field morphing. The experimental results compare to those existing systems show that our system provides a convenient dressing system which can be widely adoptable by apparel stores.

Abstract: In large-scale smart camera networks, cooperation among devices is required for continuous tracking of targets and higher level reasoning. A large amount of multimedia data with derived metadata is generated and transferred among devices. In this paper, we design a large-scale surveillance system which consists of smart cameras. It complies with the standard specification to ensure interoperability among cameras and flexibility regarding integration of new devices and services. Surveillance data contained in them is integrated and structured according to the ontology, and useful context information can be derived. This paper introduces how to build surveillance knowledge base, import relevant data from other devices, and annotate data on interoperable framework which accommodates to the standard. The annotation process provides an impetus to the improvement of knowledge over time. We define a representative reasoning architecture that provides location-based context induction, and implemented in our test bed site to show superiority in large-scale surveillance.

Abstract: In this paper, the movement behavior of a virtual human based on realistically limited perception (RLP) is proposed to be human-like. As an interface between perception and movement-path generation, a mapping module is a fundamental component needed by a virtual human. Research of the mapping based on RLP was performed by Hill et al. However, their research was conducted using only a camera’s view point. In this present research, a virtual human’s integration with Hill et al’s mapping and other variables (e.g., enemy emergence) is considered in the context of a reconnaissance mission. The loci of the movement paths that were generated by human subjects and a virtual human based on RLP are compared with each other.