Evacuation Planning Based on the Contraflow Technique With Consideration of Evacuation Priorities and Traffic Setup Time

Evacuation planning with the contraflow technique is a complex planning problem. The problem is further complicated when more realistic situations such as evacuation priorities and the setup time for the contraflow operation are considered. Such a complex problem has yet to be discussed in the present literature. In this paper, we present a multipleobjective optimization model for this problem and a two-layer algorithm to solve this model. Experiments on three transportation networks with different network scales are presented to show the excellent performance of the proposed model and algorithm.published_or_final_versio

Characterization of cortex and white matter injury in a mild hypoxic-ischemic neonatal rat mode by diffusion tensor MR imaging

Animal Studies: Diffusion & Perfusion - Poster presentationWe evaluated hypoxic-ischemic (HI) induced cortex and white matter (WM) damage in a mild HI neonatal rat model at 24h post HI by diffusion tensor MR imaging (DTI) and correlated the DTI indices with histological evaluations. Results showed that significantly decreased FA and ¦Ë// reflected HI induced astrogliosis in the injured cortex, whereas significantly decreased FA with increased ¦Ë¡Í indicated dysmyelination in the WM. Our results demonstrated that early mild HI induced cortex and WM damage could be reflected by DTI indices and these may be potentially useful biomarkers to non-invasively monitor mild HI induced neonatal brain damage.published_or_final_versionThe 17th Scientific Meeting & Exhibition of the International Society of Magnetic Resonance in Medicine (ISMRM), Honolulu, HI., 18-24 April 2009. In Proceedings of ISMRM 17th Scientific Meeting & Exhibition, 2009, p. 359

The interactive bending wrinkling behaviour of inflated beams

ArticleA model is proposed based on a Fourier series method to analyse the interactive bending wrinkling behaviour of inflated beams. The whole wrinkling evolution is tracked and divided into three stages by identifying the bifurcations of the equilibrium path. The critical wrinkling and failure moments of inflated beam are then able to be predicted. The global-local interactive buckling pattern is elucidated by the proposed theoretical model and also verified by non-contact experimental tests. The effects of geometric parameters, internal pressure and boundary conditions on the buckling of inflated beams are investigated in the end. Results reveal that the interactive buckling characteristics of inflated beam under bending are more sensitive to the dimensions of the structure and boundary conditions. We find that beams which are simply supported at both ends or clamped and simply supported boundary conditions may prevent the wrinkling formation. The results provide significant support for our understanding of the bending-wrinkling behaviour of inflated beams.This work is supported by National Natural Science Foundation of China, 11172079 and 11572099; Program for New Century Excellent Talents in University, NCET-11-0807; Natural Science Foundation of Heilongjiang Province of China, A2015002; the Fundamental Research Funds for the Central Universities, HIT.BRETIII.201209 and HIT.MKSTISP.2016 29

Effect of initial conditions on interaction between a boundary layer and a wall-mounted finite-length-cylinder wake

Author name used in this publication: Y. ZhouAuthor name used in this publication: C. K. ChanAuthor name used in this publication: K. S. Lam2006-2007 > Academic research: refereed > Publication in refereed journalVersion of RecordPublishe

Study of malondialdehyde (MDA) content, superoxide dismutase (SOD) and glutathione peroxidase (GSH-Px) activities in chickens infected with avian infectious bronchitis virus

This study was carried out to investigate the changes of serum oxidative index in chickens infected with avian infectious bronchitis virus. Eighty (80) 15-day-old chickens were divided into two groups randomly: the control group and the experimental group. Birds in the experimental group were inoculated with infectious bronchitis virus, then the superoxide dismutase (SOD) and glutathione peroxidase (GSH-Px) activities and malondialdehyde (MDA) contents in the serum were detected in each group at days 1, 3, 6, 9, 12 post infection, respectively. Results showed that SOD and GSH-Px activities in the serum of the experiment group decreased after infection (P<0.05 or P<0.01). MDA contents of the experiment group increased after infection, and was significantly higher than those of the control group at days 6 and 9 post infection (P<0.01). The results implied that oxidative damage may regulate the occurrence and development of avian infectious bronchitis.Key words: Avian infectious bronchitis, superoxide dismutase (SOD), glutathione peroxidase (GSH-Px), malondialdehyde (MDA)

Mild hypoxic-ischemic injury in the neonatal rat brain: longitudinal evaluation of the white matter using diffusion tensor MR imaging

Session 75: Perfusion & Diffusion: Animal Models - Oral presentationWe evaluated longitudinally mild hypoxic-ischemic (HI) induced white matter (WM) damage in a neonatal rat model using DTI and correlated the DTI indices with histological evaluations. Results showed significantly decreased FA and increased ¦Ë¡Í in the injured WM reflected dysmyelination. The longitudinal changes of increasing FA, decreasing ¦Ë¡Í, and no change in ¦Ë// in both injured and control WM suggests continued myelination. Furthermore, differences in FA and ¦Ë¡Í between injured and control WM decreased longitudinally. Our results demonstrated that mild HI induced WM damage continues to mature with partial recovery post-HI, and this could be reflected by DTI in vivo.published_or_final_versionThe 17th Scientific Meeting & Exhibition of the International Society of Magnetic Resonance in Medicine (ISMRM), Honolulu, HI., 18-24 April 2009. In Proceedings of ISMRM 17th Scientific Meeting & Exhibition, 2009, p. 74

Mild hypoxic-ischemic injury in the neonatal rat brain: longitudinal evaluation of the white matter using diffusion tensor MR imaging

Session 75: Perfusion & Diffusion: Animal Models - Oral presentationWe evaluated longitudinally mild hypoxic-ischemic (HI) induced white matter (WM) damage in a neonatal rat model using DTI and correlated the DTI indices with histological evaluations. Results showed significantly decreased FA and increased ¦Ë¡Í in the injured WM reflected dysmyelination. The longitudinal changes of increasing FA, decreasing ¦Ë¡Í, and no change in ¦Ë// in both injured and control WM suggests continued myelination. Furthermore, differences in FA and ¦Ë¡Í between injured and control WM decreased longitudinally. Our results demonstrated that mild HI induced WM damage continues to mature with partial recovery post-HI, and this could be reflected by DTI in vivo.published_or_final_versionThe 17th Scientific Meeting & Exhibition of the International Society of Magnetic Resonance in Medicine (ISMRM), Honolulu, HI., 18-24 April 2009. In Proceedings of ISMRM 17th Scientific Meeting & Exhibition, 2009, p. 74

On domain modelling of the service system with its application to enterprise information systems

Information systems are a kind of service systems and they are throughout every element of a modern industrial and business system, much like blood in our body. Types of information systems are heterogeneous because of extreme uncertainty in changes in modern industrial and business systems. To effectively manage information systems, modelling of the work domain (or domain) of information systems is necessary. In this paper, a domain modelling framework for the service system is proposed and its application to the enterprise information system is outlined. The framework is defined based on application of a general domain modelling tool called function-context-behaviour-principle-state-structure (FCBPSS). The FCBPSS is based on a set of core concepts, namely: function, context, behaviour, principle, state and structure and system decomposition. Different from many other applications of FCBPSS in systems engineering, the FCBPSS is applied to both infrastructure and substance systems, which is novel and effective to modelling of service systems including enterprise information systems. It is to be noted that domain modelling of systems (e.g. enterprise information systems) is a key to integration of heterogeneous systems and to coping with unanticipated situations facing to systems.postprin

A note on isoparametric polynomials

We show that any homogeneous polynomial solution of |\nabla F(x)|^2=m^2|x|^(2m-2), m>1, is either a radially symmetric polynomial F(x)=\pm |x|^m (for even m's) or it is a composition of a Chebychev polynomial and a Cartan-M\"unzner polynomial.Comment: 6 page