4,045 research outputs found
China's indigenous innovation policy: Impact on multi-national R&D
Multinational corporations seeking access to China's burgeoning consumer markets and human resources are establishing R&D centers in the country and developing ways to thread a path through its complex innovation policies. © 1970-2012 IEEE
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
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
Public knowledge of how to use an automatic external defibrillator in out-of-hospital cardiac arrest in Hong Kong
published_or_final_versio
Management and outcome of antenatally diagnosed congenital cystic adenomatoid malformation of the lung
Objective: To review the management and outcome of babies with antenatally diagnosed congenital cystic adenomatoid malformation. Design: Retrospective cohort review. Setting: Tertiary neonatal care unit at Queen Mary Hospital and antenatal diagnostic centre at Tsan Yuk Hospital. Patients: Consecutive patients with antenatally suspected congenital cystic adenomatoid malformation in their concepti among antenatal patients attending Tsan Yuk Hospital from 1994 to 2002. Twenty-four of 33 cases were referred to Queen Mary Hospital for postnatal management and for whom comprehensive records were available for analysis in 23. Interventions: Postnatal interventions in their babies included investigational imaging for congenital cystic adenomatoid malformation and surgery. Main outcome measures: Antenatal and postnatal outcome, as well as pathology of the excised lesions. Results: Antenatal outcome: termination of pregnancy in two cases and spontaneous abortion in one; in-utero regression was documented in nine cases and in one hydropic change was apparent. Postnatal outcome: only eight of 20 babies born alive had symptoms in neonatal period. Two developed serious infective complications in infancy, one with documented in-utero regression. Pulmonary parenchymal abnormalities were detected on computed tomography of the thorax in six of seven cases with normal or non-specific chest radiograph findings. Among nine cases with in-utero regression, congenital cystic adenomatoid malformation was confirmed by operative histology in five and abnormal computed tomography findings in three. Fifteen babies underwent surgical excision, one of whom died because of severe pre-existing pulmonary hypoplasia and nine endured minor postoperative complications. A favourable outcome was documented at a mean follow-up of 22 months (range, 2 months-7 years). Conclusions: In-utero regression of congenital cystic adenomatoid malformation on antenatal ultrasound may not represent genuine resolution. Computed tomographic thorax should be considered in all newborns with antenatally diagnosed congenital cystic adenomatoid malformation, and if confirmed early operation before first hospital discharge is recommended.published_or_final_versio
Factors affecting long-term care use in Hong Kong
Key Messages:
1. Psychological factors play the most significant role in contributing to long-term care choices. Older people’s positive attitude towards community care services (CCS) and strong structural solidarity of the family are two key factors.
2. Stronger family structural solidarity is associated with the use of CCS, whereas family structural solidarity tends to be confined to nuclear families rather than intergenerational families, which implies that spouse and children caregivers have different needs. Caregiver support services targeting the elderly couple’s families and children as caregivers should be differentiated and more specifically targeted.
3. In general, CCS serve frail elders with acute rehabilitation needs, who are more likely to be cared for by family members and/or domestic helpers, whereas residential care services serve frail elders with a higher level of cognitive impairment.published_or_final_versio
Simplified seismic assessment of buildings using non-uniform Timoshenko beam model in low-to-moderate seismicity regions
In low-to-moderate seismicity regions, the limited seismic displacement demands could probably render tall buildings remaining nearly elastic during a maximum considered earthquake. Previous studies have shown the capability of the uniform Timoshenko beam, model in resembling the dynamic behaviors of regular buildings. This article describes response spectrum analyses on the non-uniform Timoshenko beam model, considering the first four vibration modes to assess the seismic demands on various building types, which encompass low-rise wall or frame buildings and high-rise shear wall buildings with or without transfer structures. Simplified design charts correlating the global seismic demands - spectral accelerations, maximum interstory drift ratios, roof drift ratios and required shear areas - to the fundamental translational period of each building are developed. The structural periods could be determined from in-situ dynamic tests, full frame models or an appropriate-period-height equation, the latter of which is provided here by calibrating from in-situ vibration tests of regional buildings constructed in compliance with British Standards. This simplified approach provides a fast track to seismic performance for both existing and new buildings, which could easily be comprehended by engineers without prior knowledge of seismic design
Roles of Education and IQ in Cognitive Reserve in Parkinson's Disease-Mild Cognitive Impairment.
Background/aimsThe role of cognitive reserve in Parkinson's disease (PD)-mild cognitive impairment (MCI) is incompletely understood.MethodsThe relationships between PD-MCI, years of education, and estimated premorbid IQ were examined in 119 consecutive non-demented PD patients using logistic regression models.ResultsHigher education and IQ were associated with reduced odds of PD-MCI in univariate analysis. In multivariable analysis, a higher IQ was associated with a significantly decreased odds of PD-MCI, but education was not.ConclusionThe association of higher IQ and decreased odds of PD-MCI supports a role for cognitive reserve in PD, but further studies are needed to clarify the interaction of IQ and education and the impact of other contributors such as employment and hobbies
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