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A unified intrinsic functional expansion theory for solitary waves

Acta Mechanica Sinica 2005年第1期21卷 1-15页

作者： Theodore Yaotsu Wu John kao Jin E.Zhang California Institute of Technology Pasadena.CA 91125U.S.A.FellowInstitute of MechanicsChinese Academy of SciencesBeijing 100080China Warner Brothers GlendaleCA 91203.U.S.A. The university of Hong Kong.Pokfulam Road.Hong Kong SAR.China

A new theory is developed here for evaluating solitary waves on water, with results of high accuracy uniformly valid for waves of all heights, from the highest wave with a corner crest of 120 down to very low ones of diminishing height. Solutions are sought for the Euler model by employing a unified expansion of the logarithmic hodograph in terms of a set of intrinsic component functions analytically determined to represent all the intrinsic properties of the wave entity from the wave crest to its outskirts. The unknown coefficients in the expansion are determined by minimization of the mean-square error of the solution, with the minimization optimized so as to take as few terms as needed to attain results as high in accuracy as attainable. In this regard, Stokess formula, F2= tan , relating the wave speed (the Froude number F) and the logarithmic decrement of its wave field in the outskirt, is generalized to establish a new criterion requiring (for minimizing solution error) the functional expansion to contain a finite power series in M terms of Stokess basic term (singular in ), such that 2M is just somewhat beyond unity, i.e. 2M1. This fundamental criterion is fully validated by solutions for waves of various amplitude-to-water depth ratio =a/h, especially about 0.01, at which M=10 by the criterion. In this pursuit, the class of dwarf solitary waves, defined for waves with 0.01, is discovered as a group of problems more challenging than even the highest wave. For the highest wave, a new solution is determined here to give the maximum height hst=0.8331990, and speed Fhst=1.290890, accurate to the last significant figure, which seems to be a new record.

关键词： Solitary waves on water Unified intrinsic functional expansion theory Exact solutions High-accuracy computation of waves of arbitrary height Mass and energy transfer

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Rare anaplastic sarcoma of the kidney:A case report

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World Journal of Clinical Cases 2020年第8期8卷 1495-1501页

作者： Jsun-Liang kao Swei-Hsiung Tsung Chih-Chung Shiao Division of Nephrology Department of Internal Medicine Camillian Saint Mary's Hospital Luodong Yilan 26546 Taiwan. Department of Pathology Camillian Saint Mary's Hospital Luodong Yilan 26546 Taiwan.

BACKGROUND Anaplastic sarcoma of the kidney(ASK)is a rare and newly recognized renal *** tumor usually is extensive and cystic,characterized by pleomorphic spindle cells with marked atypia and associated with multinucleated *** date,only 27 cases have been reported in the *** authors present an additional case and summarize the relevant knowledge in the *** SUMMARY A 27-year-old previously healthy woman presented with a palpable mass over the abdomen and right flank soreness for one *** the computed tomography study,the patient underwent right radical nephrectomy obtaining a 1680-g tumor with a size of 18.4 cm×14.5 cm×11 *** tumor is chiefly composed of anaplastic spindle cells with marked nuclear atypia admixed with multinucleated *** evaluation of tumor cells exhibited diffuse positivity for CD56,p53,and vimentin,and focally positive for *** diagnosis of ASK was ***,a local tumor recurrence followed by a distant metastasis developed within *** patient died 26 months after the initial *** to the previously 27 cases of ASK,the current case had a relatively worse prognosis,which might be potentially associated with older patient age,larger tumor size,and the lack of en-bloc resection of adjacent organs during the initial radical *** This case points out the featured pathological findings for diagnosing ASK and suggests more aggressive management for patients with ASK.

关键词： Anaplastic sarcoma of the kidney En bloc resection Local recurrence Metastasis Mortality Radical nephrectomy Case report

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四边简支钢筋桁架混凝土叠合板抗火性能试验研究

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工程力学 2023年第6期40卷 122-130页

作者：赵考重魏欣任显山东建筑大学土木工程学院山东济南250101 山东建筑大学建筑结构加固改造与地下空间工程教育部重点实验室山东济南250101

钢筋桁架混凝土叠合楼板由预制混凝土底板、钢筋桁架及现浇混凝土后浇层组成。预制板块间设置混凝土现浇带,受力钢筋在现浇带处搭接连接,形成整体楼板。通过4块四边简支钢筋桁架混凝土叠合板抗火试验,研究了叠合板在火和荷载耦合作用下... 详细信息

钢筋桁架混凝土叠合楼板由预制混凝土底板、钢筋桁架及现浇混凝土后浇层组成。预制板块间设置混凝土现浇带,受力钢筋在现浇带处搭接连接,形成整体楼板。通过4块四边简支钢筋桁架混凝土叠合板抗火试验,研究了叠合板在火和荷载耦合作用下的火灾行为,试验中考虑了不同后浇叠合层厚度和不同预制板拼装方式。结果表明:钢筋桁架混凝土叠合板在高温-荷载耦合作用下,预制底板与叠合层未产生明显脱离现象,火灾时叠合板仍具有较好的整体工作性能;板上表面沿现浇带与预制板结合面及钢筋桁架将产生纵向裂缝,最终结合面形成贯通裂缝,楼板被烧穿达到耐火极限,试验板的耐火极限均达到3 h;火灾时现浇板带板底混凝土爆裂严重,现浇带处采用搭接方式连接的钢筋外露,失去作用,双向板受力机理发生变化,形成由预制板和现浇带组成的沿预制板跨方向的单向板带,承载力大幅降低,火灾时板的剩余承载力宜按单向板计算;后浇层厚度小,预制板宽大、拼缝少,耐火极限短;钢筋桁架对保证火灾时叠合层与预制层共同工作起到关键作用。

关键词：混凝土叠合板四边支承钢筋桁架抗火性能试验研究

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All roads lead to Rome——Direct cervical carotid artery access in carotid artery intervention

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Journal of Geriatric Cardiology 2007年第2期4卷 115-116页

作者： Hsien-Li kao National Taiwan University Hospital National Taiwan University Medical School 7 Chung-Shan South Road Taipei Taiwan China

　　Carotid artery stenting (CAS) is an alternative treatment for patients with severe carotid artery stenosis, especially those with prohibitively high surgical risks.……

关键词： Direct cervical carotid artery access in carotid artery intervention All roads lead to Rome

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Collision Tectonics between the Tarim Block(Basin)and the Northwestern Tibet Plateau:New Observations from a Multidisciplinary Geoscientific Investigation in the Western Kunlun Mountains

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Acta Geologica Sinica(English Edition) 2001年第2期75卷 126-132页

作者： XIAO Xuchang LIU Xun GAO Rui Houn kao LUO Zhaohua Institute of Geology Chinese Academy of Geological Sciences Institute of Earth Sciences Academia SinicaTaipeiChina China University of Geosciences

New results from deep seismic reflection profiling, wide-angle reflection-refraction profiling and broadband seismic experiments reveal that a series of south-dipping reflectors occur on the southern margin of the Tarim block (basin). However, it is these south-dipping structures that are intercepted by another series of north-dipping reflectors at depths from 30 to about 150 km beneath the foreland of the W Kunlun Mountains. No evidence from the above geophysical data as well as geochemical and surface geological data indicate the southward subduction of the Tarim block beneath the W Kunlun Mountains (NW Tibet plateau), forming the so-called “two-sided subduction” model for the Tibet plateau as proposed by previous studies. So the authors infer that the tectonic interaction between the Tarim block and the W Kunlun block was chiefly affected by a “horizontal compression in opposite directions”, which brought about “face-to-face contact” between these two lithospheric blocks and led to the thickening, shortening and densifying of the lithosphere. Hence a “delamination” was formed due to the gravitational instability created by the thickening and densifying; then alkaline basic volcanic rocks (mainly shoshonite series) was erupted along the northern margin of the Tibet plateau owing to the delamination. This inference for the formation of the alkaline basic volcanics has been confirmed by recent geochemical and petrological studies in Tibet, indicating that different contacts control different magmatic activities: the alkali basalts are always developed in the “horizontal shortening boundary (contact)” on the northern margin of the Tibet plateau, while the muscovite granite and two-mica granite (leucogranite) in the “subductional contact” on the southern margin of the Tibet plateau.

关键词： collision tectonics deep structure NW Tibet plateau

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A Multi Scale Method for Thermoelectric MHD in Dendritic Solidification

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Journal of Iron and Steel Research(International) 2012年第S1期19卷 317-321页

作者： A kao K Pericleous School of Computing and Mathematical Sciences University of GreenwichLondon SE10 9LSUK

A fully coupled transient 3-dimensional multi-scale model has been developed to predict the evolution of dendritic growth in *** motivation to use such a method is to both reduce computational costs and increase the size of the computational *** model consists of a mixture of finite volume and finite difference solvers integrated within a novel multi-scale method that solves the three sets of equations(electromagnetism,heat transfer/solidification and fluid dynamics)on appropriate length and time scales.A locus-based method,allows for mesh ref’mement in regions of interest localised around the interface,to improve accuracy without incurring significant computational *** method has facilitated modelling the evolution of complex 3-dimensional structures on a single processor within a reasonable amount of *** a demonstration,the model is applied to a super-cooled dendritic solidification problem,in the presence of a constant high magnetic field.

关键词： multi-scale thermoelectric MHD dendritic growth

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Mechanism of Transfusion-induced HLA alloimmunization

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中国输血杂志 2010年第10期23卷 852-854页

作者： K.J.kao Koo Foundation SYS Cancer Center

Platelet transfusion therapy has allowed successful prevention and treatment of hemorrhagic complications associated with thrombocytopenia since its first use in the 1960'***, the use of platelets has increased at an ... 详细信息

关键词：输血治疗人类白细胞抗原血小板减少机制并发症出血性

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Investigation on a Small Oscillogram

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Chinese Chemical Letters 2005年第9期16卷 1249-1251页

作者： Hong Fang ZHANG Jian Bin ZHENG Hong Gang NI Hung kao Institute of Analytical Science/Shaanxi Provincial Key Lab of Electroanalytical Chemistry Northwest University Xi＇an 710069

A small oscillogram, one end of which was substituted by a bright point caused by the redox of an appropriate depolarizer and the other end of which was the redox of Hg or the redox of supporting electrolyte cation, was investigated in this paper. Experimental results of application of the small oscillogram to oscillographic determination of cefoperazone showed that the small osciUogram was more stable, sensitive, and less interference than classical oscillogram.

关键词： Electroanalysis oscillographic analysis oscillogram

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Stress Analysis of Printed Circuit Board with Different Thickness and Composite Materials Under Shock Loading

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Computer Modeling in Engineering & Sciences 2020年第2期122卷 661-674页

作者： Kuan-Ting Liu Chun-Lin Lu Nyan-Hwa Tai Meng-kao Yeh Department of Power Mechanical Engineering National Tsing Hua UniversityHsinchu30013Taiwan. Department of Materials Science and Engineering National Tsing Hua UniversityHsinchu30013Taiwan.

In this study,the deformation and stress distribution of printed circuit board(PCB)with different thickness and composite materials under a shock loading were analyzed by the finite element *** standard 8-layer PCB subjected to a shock loading 1500 g was evaluated ***,the finite element models of the PCB with different thickness by stacking various number of layers were *** addition to changing thickness,the core material of PCB was replaced from woven E-glass/epoxy to woven carbon fiber/epoxy for structural *** non-linear material property of copper foil was considered in the *** results indicated that a thicker PCB has lower stress in the copper foil in PCBs under the shock *** stress difference between the thicker PCB(2.6 mm)and thinner PCB(0.6 mm)is around 5%.Using woven carbon fiber/epoxy as core material could lower the stress of copper foil around 6.6%under the shock loading 1500 g for the PCB with 0.6 mm *** the other hand,the stress level is under the failure strength of PCBs with carbon fiber/epoxy core layers and thickness 2.6 mm when the peak acceleration changes from 1500 g to 5000 *** study could provide a reference for the design and proper applications of the PCB with different thickness and composite materials.

关键词： Stress analysis printed circuit board composite material finite element analysis shock loading.

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Optimization of multi-model ensemble forecasting of typhoon waves

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Water Science and Engineering 2016年第1期9卷 52-57页

作者： Shun-qi Pan Yang-ming Fan Jia-ming Chen Chia-chuen kao Hydro-environmental Research Centre School of Engineering Cardiff University Coastal Ocean Monitoring Center National Cheng Kung University Department of Hydraulic and Ocean Engineering National Cheng Kung University

Accurately forecasting ocean waves during typhoon events is extremely important in aiding the mitigation and minimization of their potential damage to the coastal infrastructure, and the protection of coastal communities. However, due to the complex hydrological and meteorological interaction and uncertainties arising from different modeling systems, quantifying the uncertainties and improving the forecasting accuracy of modeled typhoon-induced waves remain challenging. This paper presents a practical approach to optimizing model-ensemble wave heights in an attempt to improve the accuracy of real-time typhoon wave forecasting. A locally weighted learning algorithm is used to obtain the weights for the wave heights computed by the WAVEWATCH III wave model driven by winds from four different weather models （model-ensembles）. The optimized weights are subsequently used to calculate the resulting wave heights from the model-ensembles. The results show that the opti- mization is capable of capturing the different behavioral effects of the different weather models on wave generation. Comparison with the measurements at the selected wave buoy locations shows that the optimized weights, obtained through a training process, can significantly improve the accuracy of the forecasted wave heights over the standard mean values, particularly for typhoon-induced peak waves. The results also indicate that the algorithm is easy to imnlement and practieal for real-time wave forecasting.

关键词： Wave modeling Optimization Forecasting Typhoon waves WAVEWATCH III Locally weighted learning algorithm

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