Engineering Computations: Volume 31 Issue 2

Mathematical performance analysis for HCoP-B reactive fast handover mechanisms for the nested mobile networks

Ing-Chau Chang, Ciou-Song Lu, Sheng-Chih Wang

In the past, by adopting the handover prediction concept of the fast mobile IPv6, the authors have proposed a cross-layer architecture, which was called the proactive fast HCoP-B…

Monte-Carlo analysis of a new 6-T full-adder cell for power and propagation delay optimizations in 180 nm process

G. Ramana Murthy, C. Senthilpari, P. Velrajkumar, Lim Tien Sze

Demand and popularity of portable electronic devices are driving the designers to strive for higher speeds, long battery life and more reliable designs. Recently, an overwhelming…

Design of a six-speed transmission hub with an integrated brushless permanent-magnet motor used for electric bicycles

Yi-Chang Wu, Bo-Wei Lin

The electric motor and multi-speed transmission hub are essential components for an electric bicycle. Traditionally, these two devices have been designed and manufactured…

A tubular linear machine with dual Halbach array

Liang Yan, Lei Zhang, Zongxia Jiao, Hongjie Hu, Chin-Yin Chen, I-Ming Chen

Force output is extremely important for electromagnetic linear machines. The purpose of this study is to explore new permanent magnet (PM) array and winding patterns to increase…

Micro-drilling process control by using adaptive sliding controller

Hung-Yi Chen

Recently, the micro-positioning technology has become more important for achieving the requirement of precision machinery. The piezo-actuator plays a very important role in this…

Developing a sensor-based learning concentration detection system

Yen-Ning Su, Chia-Cheng Hsu, Hsin-Chin Chen, Kuo-Kuang Huang, Yueh-Min Huang

This study aims to use sensing technology to observe the learning status of learners in a teaching and learning environment. In a general instruction environment, teachers often…

Evaluating image quality using consistent grey relational grade

Yen-Ching Chang, Chun-Ming Chang, Liang-Hwa Chen, Tung-Jung Chan

Assessing image quality is a difficult task. Different demands need distinct criteria, so it is not realistic to decide which contrast enhancement method is better only through…

Experiments of iterative learning control system using particle swarm optimization by new bounded constraints on velocity and positioning

Yi-Cheng Huang, Ying-Hao Li

This paper utilizes the improved particle swarm optimization (IPSO) with bounded constraints technique on velocity and positioning for adjusting the gains of a…

Computing the power flow and mechanical efficiency of in-hub bicycle transmissions

Yi-Chang Wu, Chia-Ho Cheng

The analysis of power flow and mechanical efficiency constitutes an important phase in the design and analysis of gear mechanisms. The aim of this paper is to present a systematic…

A multiple sequence alignment method with sequence vectorization

Guoli Ji, Yong Zeng, Zijiang Yang, Congting Ye, Jingci Yao

The time complexity of most multiple sequence alignment algorithm is O(N2) or O(N3) (N is the number of sequences). In addition, with the development of biotechnology, the amount…

Robot mapping using local invariant feature detectors

Yin-Tien Wang, Chen-Tung Chi, Ying-Chieh Feng

To build a persistent map with visual landmarks is one of the most important steps for implementing the visual simultaneous localization and mapping (SLAM). The corner detector is…

Combining a chaos system with an Arnold cat map for a secure authentication scheme in wireless communication networks

Young-Long Chen, Chung-Ming Cheng

Wu et al.'s scheme has a security problem that is related to anonymity: attackers can determine by interception the identity of a legal user. This paper aims to propose a new…

Extraction of elementary siphons in a class of generalized Petri nets using graph theory

YiFan Hou, ZhiWu Li, Mi Zhao, Ding Liu

Siphon-based deadlock control in a flexible manufacturing system (FMS) suffers from the problems of computational and structural complexity since the number of siphons grows…

Analytical model for predicting the interfacial stresses of carbon nanotubes-reinforced nanocomposites

Shiuh-Chuan Her, Shou-Jan Liu

Carbon nanotubes (CNTs) with exceptional mechanical, thermal and electrical properties are considered to be ideal for reinforcing high-performance structures. The interfacial…

Special issue on Advanced Computational Methods in Engineering Design and Analysis

Wen-Hsiang Hsieh