Evaluation of Local & Global Ductility Relationships for Low-Rise Masonry-Infilled Reinforced Concrete Frame Structures

The paper presents the findings on a parametric study of the period lengthening effects of low-rise masonryinfilled reinforced concrete frame buildings using an incremental dynamic analysis (IDA). Simplified 2D building models utilizing Bouc-Wen model for describing strength, stiffness degradation and pinching effect were subjected to some selected ground motion records ranging from far to near field earthquakes in low to high seismicity regions. Simple equations correlating local to global ductilities derived from pushover (PO) analysis for buildings under soft storey failure mechanism are proposed. The equations take into account the governing factors like critical interstorey drift and number of storeys. The applicability of the equations was verified up to 7-storey buildings from the results of IDA. Such simple ductility relationships are likely to facilitate mostly the coefficient-based method, in which the typical PO analysis may be bypassed and allows making intuitive insight into the seismic performance of buildings.published_or_final_versio

Electron acceleration associated with the magnetic flux pileup regions in the near-Earth plasma sheet: A multicase study

Using the Time History of Events and Macroscale Interactions during Substorms (THEMIS) observations, we study electron acceleration (<30 keV) in the magnetic flux pileup regions (FPRs) in the near-Earth plasma sheet (X ~ –10 RE). We present three cases of FRPs associated with dipolarization fronts and substorm dipolarization. Based on the characteristics of the magnetic field, we defined the magnetic field enhancement region (MFER) as the magnetic field with significant ramp that is usually observed near the dipolarization front boundary layer. On the other side, the increased magnetic field without a significant ramp is the rest of a FPR. Our results show that betatron acceleration dominates for 10–30 keV electrons inside the MFER, whereas Fermi acceleration dominates for 10–30 keV electrons inside the rest of the FPR. Betatron acceleration is caused by the enhancement of the local magnetic field, whereas Fermi acceleration is related to the shrinking length of magnetic field line. These accelerated electrons inside the FPRs in the near-Earth tail play a potentially important role in the evolution of the Earth's electron radiation belt and substorms

Electron irradiation effects in electrostrictive P(VDF-TrFE) copolymers

2000-2001 > Academic research: refereed > Refereed conference paperVersion of RecordPublishe

Dynamic routing model and solution methods for fleet management with mobile technologies

Author name used in this publication: K. L. ChoyAuthor name used in this publication: Wenzhong Shi2007-2008 > Academic research: refereed > Publication in refereed journalAccepted ManuscriptPublishe

Dielectric relaxation and electrical properties of 0.94Pb(Fe[sub ½]Nb[sub ½])O₃-0.06PbTiO₃ single crystals

Author name used in this publication: X. G. Tang2004-2005 > Academic research: refereed > Publication in refereed journalVersion of RecordPublishe

VICTour 1.1: Introducing virtual learning environments and gamification

Game engines are one of the few solutions to providing a true virtual campus tour experience. In this paper, we explore the evolution of the virtual campus tour and thereby the current and future work of game technology within virtual touring. An investigation is conducted into the application of objective-based gamification and its ability to encourage exploration of a virtual world. We also examine virtual campus tours as an alternate form of taught content via virtual learning environments (VLEs). An investigation into the use of head mounted displays to improve immersion is also explored

Growth and pyroelectric property of 0.2 mol % Fe-doped Pb(Mg[sub ⅓]Nb[sub ⅔])O₃-0.38PbTiO₃ single crystals measured by a dynamic technique

2003-2004 > Academic research: refereed > Publication in refereed journalVersion of RecordPublishe

Replication study of genetic loci influencing age at menopause in Southern Chinese women

Session - Ovarian AgeingThis journal issue contain Abstracts: 10th EMAS Congress 2015INTRODUCTION: Age at menopause is a highly heritable trait. Previous genome-wide meta-analysis in European and Northern Chinese identified 26 loci underlying age at menopause. OBJECTIVES: To validate these 26 genetic loci in Southern Chinese women. AIMS: To study genetic factors which may influence age at menopause in Southern Chinese. METHODS: This study was performed on 653 women who participated in the Hong Kong Osteoporosis Study, whose age at menopause was available. These women consented to have blood taken and archived for genotyping. DNA was extracted from the buffy coat, and genotyping was performed using Sequenom iPLEX. Age at menopause ...postprin

Effect of electron irradiation on poly(vinylidene fluoride-trifluoroethylene) copolymers

2000-2001 > Academic research: refereed > Publication in refereed journalVersion of RecordPublishe

Sensing characteristics of a novel NH 3-nitrided schottky-diode hydrogen sensor

A novel NHi-nitrided Schottky-diode hydrogen sensor has been successfully fabricated Measurements have been performed to investigate the sensitivity, stability and response speed of the sensor at different temperatures and hydrogen concentrations. It can respond to hydrogen variation very quickly and can give significant response ewn at low hydrogen concentration. The studied device exhibits high sensitivity of 350 % at 300 °C when 800 ppm IJ in N2 gas is introduced. The sensitivity is 15 times greater than that of the Pt-SiC sensor. The excellent hydrogen-sensing characteristics of this novel sensor make it very suitable for detecting hydrogen leakage in high-temperature environment. The effects of hydrogen adsorption on the barrier height and hydrogen reaction kinetics are also investigated. ©2004 IEEE.published_or_final_versio