A New Handover Strategy between Femtocell and Macrocell for LTE-based Network

[[abstract]]The femtocell networks that use Home eNodeB (HeNB) and existing networks as backhaul connectivity can fulfill the upcoming demand of high data rate for wireless communication system as well as can extend the coverage area. We consider so me parameters which are interference, velocity, RSS and QoS level in handover. We propose a new handover strategy between femtocell and macrocell for LTE-based network in hybrid access mode. This strategy can avoid unnecessary handover and reduce handover failure. In this paper we analyzed three scenarios after handover decision strategy procedure: hand-in (CSG and non-CSG), hand-out.[[notice]]補正完畢[[conferencetype]]國際[[conferencedate]]20110703~20110704[[iscallforpapers]]Y[[conferencelocation]]Sao Paulo, Brazil[[countrycodes]]BR

Using syntactic rules to combine opinion elements in Chinese opinion mining systems

[[abstract]]Most Chinese opinion mining systems use the specific pattern and nearby approach to combine relevant opinion elements (feature words and opinion words) to express the opinion tendencies of authors. In this paper, we propose a rule-based ad hoc method to study the combination problem of Chinese opinion elements. We extracted the opinion elements of articles based on lexicons and then combined them with the different sentence patterns and grammars to analyze the authors’ opinions. Because the articles on the online communities such as blogs, wikis, online forums, etc. do not have a defined format, there are often opinion comments that do not refer to the topic, resulting in information loss and significantly reduced recall. Therefore, the “default topic” method is proposed to correct this type of problem. Additionally, there might be errors when using the nearby approach to combine opinion elements. Thus, we propose the concept of “clause priority” to increase precision. After 20 months of long-term tracking and analysis, the experimental result indicates that the method proposed in this paper had good precision, recall, and F1 of opinion tendency analysis for review articles.[[notice]]補正完畢[[journaltype]]國外[[ispeerreviewed]]Y[[booktype]]紙本[[booktype]]電子版[[countrycodes]]KO

A Channel Quality-aware Scheduling and Resource Allocation Strategy for Downlink LTE Systems

[[abstract]]Today, the main purpose of a scheduler for Long Term Evolution (LTE) is to provide the best system performance. However, it may decrease the system performance to have latency and starvation of lower priority connections in a resource allocation phase. There has been little research performed on LTE downlink scheduling and resource allocation. This paper proposes an efficient algorithm that includes scheduling strategies and resource allocation mechanisms, to avoid the latency or starvation of lower priority connections and to maintain system performance in downlinks of LTE. The algorithm discusses five levels of bandwidth request situations to assign priority and to allocate the bandwidth for each connection. Therefore, we design an LTE downlink scheduling scheme and a resource allocation strategy that not only aims to achieve the system’s highest performance but also avoids latency and starvation problems. As shown in the results of simulations, the proposed algorithm can provide proportional fairness and high system performance in downlinks of LTE systems.[[notice]]補正完畢[[journaltype]]國外[[incitationindex]]EI[[ispeerreviewed]]Y[[booktype]]紙本[[countrycodes]]US

The Sleep Control Strategy for Wireless Sensor Networks

[[abstract]]The sensor node in a wireless sensor network has the characteristics of low power consumption and a non-rechargeable sensor node. Therefore, power consumption is limited. Effectively controlling the power of the sensor node and extending the life time of the whole network become very important issues. In this paper, we offer the optimal sleep control for wireless sensor networks: randomly setting the sensor nodes in the entire network and determining the sleeping probability by the distance between the sensor node and sink. This method reduces the transmission frequency of the sensor nodes that are closer to the sink and effectively reaches the network's loading balance. However, the sensor nodes process their sleeping schedules according to their own residual power to save energy.[[notice]]補正完畢[[journaltype]]國外[[incitationindex]]EI[[ispeerreviewed]]Y[[booktype]]紙本[[countrycodes]]KO

Feng Shui: A Comparison of the Original Concept and Its Current Westernized Version

Feng Shui is an ancient art, science, and philosophy that originated in China 3000 years ago. Followers of Feng Shui believe that they can find a better place or create a better living environment through the Feng Shui principles. Feng Shui is not only popular in China and Asia; its popularity also has dramatically increased in Western countries. Architects, interior designers, and landscape architects in the West have used Feng Shui as a design guideline for pursuing a harmonious living environment for many years. However, the different cultural backgrounds, the lack of basic knowledge of its true principles, and the lack of scientific data have resulted in concerns over the application of Feng Shui in the West. The Black-Sect Tibetan Tantric School of Feng Shui (known as Modern Feng Shui or BTB Feng Shui) is a very common school of Feng Shui in Western culture. The purpose of Modern Feng Shui is to help the discipline become easier to adapt and more suitable for the West and to encourage the application of Feng Shui principles into daily life. However, by trying to simplify its principles, Modern Feng Shui is potentially deviating from the true core wisdom of Feng Shui. Since the popularity of Feng Shui is continuously growing and many different professionals are attempting to apply the discipline to their fields, it is important to understand what is meant by Traditional Feng Shui principles and their core concepts and how to incorporate them. The purpose of this thesis is, first, to discuss the principles and history of Feng Shui, and second, to provide a design metric that follows both the Traditional Feng Shui III principles and BTB Modern Feng Shui principles. Finally, using the Traditional Feng Shui principles and Modern Feng Shui design metrics on the same floor plan, the two different results are compared to understand why the application of Modern Feng Shui might be at risk of losing the core concepts of Traditional Feng Shui

HIP-based Handover Mechanism under MIH Architecture in Heterogeneous Wireless Networks

[[abstract]]In this paper, we offers a HIP-based vertical handover scheme under MIH architecture in heterogeneous wireless network. Many diversity wireless access technologies are offering in Next Generation Wireless Networks (NGWN). In NGWN, the integration of wireless access network will be accomplished by seamless handover which contains many challenges i.e. service mobility, vertical handover, common authentication, unified accounting/billing, security mechanisms, QoS and service provisioning, etc. Toward this direction, our research aims to provide a complete integration of heterogeneous network architecture and support a fit mobility management for network to seamless handover. We focus on simulation about vertical handover execution for WiMAX to WiFi scenario. Our idea can modify defects of Mobile IP and SIP. And it provides internet users always best connection. Moreover, we hope to contribute our research to beyond 4G wireless networks.[[notice]]補正完畢[[conferencetype]]國際[[conferencedate]]20110621~20110623[[booktype]]紙本[[booktype]]電子版[[iscallforpapers]]Y[[conferencelocation]]Gyeongju, Korea[[countrycodes]]KO

A Novel Packet Scheduling Scheme for Downlink LTE System

[[abstract]]Long term evolution (LTE) is the next generation wireless system. There are not many researches for LTE downlink scheduling. It uses orthogonal frequency division multiple access (OFDMA) in downlink. Until now, the goal for the LTE scheduler is achieving the system highest performance, but it will cause to lower priority connection delay or starvation under limited bandwidth resources. Therefore, we design a LTE downlink scheduling scheme and resource allocation strategy which are not only to achieve the system highest performance, but also avoid latency and starvation problem.[[notice]]補正完畢[[conferencetype]]國際[[conferencedate]]20111014~20111016[[iscallforpapers]]Y[[conferencelocation]]Dalian, China[[countrycodes]]CH

Place Experience of Nursing Home Courtyards: a Holistic Approach to Understanding Institutional Outdoor Environments

This dissertation research investigates place experience of three nursing home courtyards. Based on systemic place theories, each nursing home courtyard is conceptualized as place or a system consisting of three major subsystems: physical settings, people and rules of place uses. Place experience as the center of conceptualization is the result of interactions between them. Place experience is thus characterized by objective, subjective and consensual qualities of people-environment relationships. The research design follows the premises of pragmatic case study methodology; a mixed research method is employed that includes archival research of floor plans, photo documentation, a physical setting checklist and instrumented measures for physical environments; staff interviews, surveys and auditing evaluations for organizational and staff contexts; and resident interviews and behavior mapping for individual contexts and place rules. Through synthesizing different sources of data into experiential descriptions, this study suggests that each courtyard is a compound of nine desired experiential attributes including 1) privacy, 2) social interactions, 3) accessible space and built features, 4) safety & security, 5) sensory stimulation, 6) information awareness and spatial orientation, 7) familiarity, 8) sense of ownership and 9) participation in meaningful activities. Each courtyard is unique in its distinct composition of these attributes and arrangements of the three subsystems. Experience of social interactions is the shared experiential quality across the cases. The three courtyards are programmed as a social space but are not meant to be a place to mark ownership, show identities and create meaningful engagement. The shared nature is incongruent with residents’ experience of home gardens and gardening collected from the interviews. A relatively successful case is selected; it is a place with more equal emphases on the nine attributes. Its patterns of the three subsystems may guide a less effective case to make future improvement. Implications of the findings are considered at three levels. First, this study applied a pragmatic approach, which offers a means to generate a holistic understanding of institutional outdoor environments; this study may complement the current research dominated by a positivist approach. Second, the approach recognizes and acknowledges the multifaceted phenomenon of the courtyards; it describes sets of variables or quality indicators that may help further theoretical construction or the development of quality measure. Third, this comparative research highlights the importance of establishing a database of cases reports. The accumulation of successful cases would help identify effective patterns of the three subsystems. Shared features emerging from successful cases may represent findings with high generalizability