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H0LiCOW VII: cosmic evolution of the correlation between black hole mass and host galaxy luminosity
Ding, Xuheng,Treu, Tommaso,Suyu, Sherry H.,Wong, Kenneth C.,Morishita, Takahiro,Park, Daeseong,Sluse, Dominique,Auger, Matthew W.,Agnello, Adriano,Bennert, Vardha N.,Collett, Thomas E. Oxford University Press 2017 MONTHLY NOTICES- ROYAL ASTRONOMICAL SOCIETY Vol.472 No.1
PARK,H.J.,PARK,J.B.,LEE,H.J.,CHUNG,S.C.,WONG,E.K.,JONES,J.P.,MIN,B.I.,CHO,Z.H. WHO COLLABORATING CENTRE FOR TRADITIONAL MEDICINE 1998 東西醫學硏究所 論文集 Vol.1998 No.-
A preliminary study of the correlation between acupuncture points (acupoints) for the treatment of eye disorders suggested by ancient Oriental literature and the corresponding brain localization for vision described by Western medicine was performed by using functional MRI (fMRI). The vision-related acupoint (VAI) is located in the lateral aspect of the foot, and when acupuncture stimulation is performed there, activation of occipital lobes is seen by fMRI. Stimulation of the eye by directly using light results in similar activation in the occipital lobes by fMRI. The experiment was conducted by using conventional checkerboard 8-Hz light-flash stimulation of the eye and observation of the time-course data. This was followed by stimulation of the VA1 by using the same time-course paradigm as visual light stimulation. Results obtained with l2 volunteers yielded very clean data and very close correlations between visual and acupuncture stimulation. We have also stimulated nonacupoints 2 to 5 cm away from the vision-related acupoints on the foot as a control, and activation in the occipital lobes was not observed. The results obtained demonstrate the correlation between activation of specific areas of brain cortices and corresponding acupoint stimulation predicted by ancient acupuncture literature.
Monte Carlo Simulation of Hot Electron Induced Gate Current in MOSFET
Ng, H. C.,Wong, H.,Li, E. H.,Yu, P. K. N. 대한전자공학회 1991 ICVC : International Conference on VLSI and CAD Vol.2 No.1
In this work, hot electro induced gate current in MOSFET is investigated by using Monte Carlo simulation. The scattering mechanisms considered in this simulation include surface roughness scattering, Coulombic scattering, and acoustic phonon scattering. In order to simplify the random scattering channel selection, virtual scattering is introduced and variable total scattering gate technique is used to minimize the number of virtual scattering. The scattering angles are also randomized and are calculated based on the scattering properties. The electric field in the MOSFET is modeled by a semi-empirical equation for the fast computation. The simulation results, including gate and drain bias dependencies, agree well with the experimental ones.
Yap, Y S,Cornelio, G H,Devi, B C R,Khorprasert, C,Kim, S B,Kim, T Y,Lee, S C,Park, Y H,Sohn, J H,Sutandyo, N,Wong, D W Y,Kobayashi, M,Landis, S H,Yeoh, E M,Moon, H,Ro, J Nature Publishing Group 2012 The British journal of cancer Vol.107 No.7
<P><B>Background:</B></P><P>In Asia, large-scale studies on anti-HER2 treatment in HER2-positive breast cancer patients with brain metastases are limited. We studied the treatment patterns of these patients in Asia to evaluate the impact of anti-HER2 treatment on the time to occurrence of brain metastases (TTBM) and survival after brain metastasis (BM).</P><P><B>Methods:</B></P><P>A retrospective study of HER2-positive breast cancer patients diagnosed with BM between January 2006 and December 2008 in six Asian countries was conducted. Demographics, tumour characteristics, treatment details, and events dates were collected from medical records.</P><P><B>Results:</B></P><P>Data from 280 patients were analysed. Before BM, 63% received anti-HER2 treatment. These patients had significantly longer TTBM than those without anti-HER2 treatment (median 33 <I>vs</I> 19 months; <I>P</I><0.002). After BM, 93% received radiotherapy, 57% received chemotherapy, and 41% received anti-HER2 treatment (trastuzumab and/or lapatinib). Use of both anti-HER2 agents, primarily sequentially, after BM demonstrated the longest survival after BM and was associated with a significant survival benefit over no anti-HER2 treatment (median 26 <I>vs</I> 6 months; hazard ratio 0.37; 95% CI 0.19–0.72).</P><P><B>Conclusion:</B></P><P>Anti-HER2 treatment before BM was associated with longer TTBM. Anti-HER2 treatment after BM was associated with a survival benefit, especially when both trastuzumab and lapatinib were utilised.</P>
I. H. Ibrahim,E. Y. K. Ng,K. Wong,R. Gunasekaran 대한기계학회 2008 JOURNAL OF MECHANICAL SCIENCE AND TECHNOLOGY Vol.22 No.10
Intake geometries result in unwanted secondary flows and formations of vortices which affect the engine performance. This paper investigates the effects of the curvature and cross-sectional shape transitioning of the actual F-5 duct. Two additional different geometries were set up to isolate each parameter; a circular cross-sectional duct with similar centerline configuration and a straight duct with similar cross-sectional transitioning as the F-5 duct. To measure the efficiency of duct flow, the distortion index (DC (60)) and pressure recovery are used. It is found that the straight duct with similar cross-sectional transitioning as the F-5 intake resulted in a 2.1% increase in pressure recovery and an 86% decrease in distortion when compared with the baseline intake. Also, the baseline intake resulted in a 0.5% increase in pressure recovery and a 15% decrease in distortion compared to the constant circular cross-sectional duct.
Intraoperative Cerebrospinal Fluid Leak in Extradural Spinal Tumor Surgery
Alexander E. Ropper,Kevin T. Huang,Allen L. Ho,Judith M. Wong,Stephen V. Nalbach,John H. Chi 대한척추신경외과학회 2018 Neurospine Vol.15 No.4
Objective: Patients with extradural spine tumors are at an increased risk for intraoperative cerebrospinal fluid (CSF) leaks and postoperative wound dehiscence due to radiotherapy and other comorbidities related to systemic cancer treatment. In this case series, we discuss our experience with the management of intraoperative durotomies and wound closure strategies for this complex surgical patient population. Methods: We reviewed our recent single-center experience with spine surgery for primarily extradural tumors, with attention to intraoperative durotomy occurrence and postoperative wound-related complications. Results: A total of 105 patients underwent tumor resection and spinal reconstruction with instrumented fusion for a multitude of pathologies. Twelve of the 105 patients (11.4%) reviewed had intraoperative durotomies. Of these, 3 underwent reoperation for a delayed complication, including 1 epidural hematoma, 1 retained drain, and 1 wound infection. Of the 93 uncomplicated index operations, there were a total of 9 reoperations: 2 for epidural hematoma, 3 for wound infection, 2 for wound dehiscence, and 2 for recurrent primary disease. One patient was readmitted for a delayed spinal fluid leak. The average length of stay for patients with and without intraoperative durotomy was 7.3 and 5.9 days, respectively, with a nonsignificant trend for an increased length of stay in the durotomy cases (p=0.098). Conclusion: Surgery for extradural tumor resections can be complicated by CSF leaks due to the proximity of the tumor to the dura. When encountered, a variety of strategies may be employed to minimize subsequent morbidity.
Risk Ranking for Tunnelling Construction Projects in Malaysia
Ghazali, F.E. Mohamed,Wong, H.C. Korea Institute of Construction Engineering and Ma 2014 Journal of construction engineering and project ma Vol.4 No.1
Tunnelling has become a preferred method of construction for road and highway projects in countries with a lot of hilly slope geological conditions such as found in Malaysia. However the construction works of a tunnelling project are usually complicated and costly, which consequently impose great risks to the parties involved. This paper identifies the key significant risks and sub-risks for tunnelling construction projects in Malaysia through a case study. Interview has been used as the solitary means to determine the significant risks from contractor's eleven key project personnel who were directly involved in the tunnelling construction such as consultant, construction manager and tunnel engineers. The importance of the risks identified is then prioritised and ranked via the Analytic Hierarchy Process (AHP)'s pairwise comparison approach to determine their criticality towards a successful delivery of project. As a result, three key risks have been identified as significant for the tunnelling case study project, namely health and safety, cost overrun in construction and time overrun in construction. Two sub-risks each of the latter categories, which are cost underestimation and unforeseen events (cost overrun in construction) as well as plant and machinery failure and delay in material delivery (time overrun in construction), have occupied the top five overall risk ranking.