A possible mechanism of anomalous shift and asymmetric hysteresis behavior of ferroelectric thin films

Author name used in this publication: F. G. Shin2004-2005 > Academic research: refereed > Publication in refereed journalVersion of RecordPublishe

Modeling of anomalous hysteresis behavior of compositionally graded ferroelectric films at low fields

Author name used in this publication: C. K. WongAuthor name used in this publication: F. G. Shin2005-2006 > Academic research: refereed > Publication in refereed journalVersion of RecordPublishe

Electrical conductivity enhanced dielectric and piezoelectric properties of ferroelectric 0-3 composites

Author name used in this publication: C. K. WongAuthor name used in this publication: F. G. Shin2004-2005 > Academic research: refereed > Publication in refereed journalVersion of RecordPublishe

Who should be treated for Helicobacter pylori infection?

Helicobacter pylori infection affects approximately half of the worldԸ?s population. In Hong Kong, approximately 55% of the population is infected with this organism. But symptoms and clinical disease develop in only a minority of infected individuals during their lifetime. Treatment should thus be appropriately targeted. It is imperative that infected patients who have either a current or past history of peptic ulcer disease, with or without bleeding or a perforation complication, and those with low-grade gastric, mucosal-associated lymphoid tissue lymphoma should all have the organism eliminated. There is evidence that antiԸ?Helicobacter pylori therapy reduces the recurrence of gastric cancer after the successful removal of early gastric cancer lesions. Patients with non-ulcer dyspepsia, particularly those with severe symptoms, should also be considered for a trial of eradication therapy. Whether or not eradication therapy should be given to those who require long-term non-steroidal anti-inflammatory drug therapy, but who do not have a history of peptic ulcer disease is still not decided. The use of prophylactic eradication to stop the development of gastric cancer or peptic ulceration in H pylori--positive but asymptomatic individuals should be considered only in research settings.published_or_final_versio

Role of interfacial charge in the piezoelectric properties of ferroelectric 0-3 composites

Author name used in this publication: C. K. WongAuthor name used in this publication: F. G. Shin2004-2005 > Academic research: refereed > Publication in refereed journalVersion of RecordPublishe

A fast passivity test for descriptor systems via structure-preserving transformations of Skew-Hamiltonian/Hamiltonian matrix pencils

Passivity in a VLSI model is an important property to guarantee stable global simulation. Most VLSI models are naturally described as descriptor systems (DSs) or singular state spaces. Passivity tests for DSs, however, are much less developed compared to their non-singular state space counterparts. For large-scale DSs, the existing test based on linear matrix inequality (LMI) is computationally prohibitive. Other system decoupling techniques involve complicated coding and sometimes ill-conditioned transformations. This paper proposes a simple DS passivity test based on the key insight that the sum of a passive system and its adjoint must be impulse-free. A sidetrack shows that the proper (non-impulsive) part of a passive DS can be easily decoupled along the test flow. Numerical examples confirm the effectiveness of the proposed DS passivity test over conventional approaches. Copyright 2006 ACM.published_or_final_versio

Effect of inclusion deformation on the magnetoelectric effect of particulate magnetostrictive/piezoelectric composites

Author name used in this publication: C. K. WongAuthor name used in this publication: F. G. Shin2007-2008 > Academic research: refereed > Publication in refereed journalVersion of RecordPublishe

A Geochemical Study of Acid Mine Drainage at the Sia Mine, Cyprus

Abstract in http://www.lpi.usra.edu/meetings/gold2001/pdf/3540.pd

Modeling saturated and unsaturated ferroelectric hysteresis loops : an analytical approach

Author name used in this publication: C. H. TsangAuthor name used in this publication: C. K. WongAuthor name used in this publication: F. G. Shin2005-2006 > Academic research: refereed > Publication in refereed journalVersion of RecordPublishe

Explicit formulas for effective piezoelectric coefficients of ferroelectric 0-3 composites based on effective medium theory

Author name used in this publication: C. K. WongAuthor name used in this publication: Y. M. PoonAuthor name used in this publication: F. G. Shin2002-2003 > Academic research: refereed > Publication in refereed journalVersion of RecordPublishe