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城市住宅 2007年第8期14卷 34-41页

作者： kenny ip 凯 Cats Interior Design

屋主与设计师的上一次合作，是打造一间以木材作主要装饰、具有浓厚泰国风情的安乐窝。在乔迁后，屋主希望拥有一间与之前完全不同感觉的新居，将更多不同的色彩，渗透于室内的每个角落。

关键词：四层复式单位室内装饰室内设计艺术风格

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泰式水晶屋

城市住宅 2005年第11期12卷 48-55页

作者： kenny ip Dick 崔佩贤 Cats Interid Design Co.Ltd

由于之前的居所是以白色为主的minimal设计风格，因此，设计师希望新居的作色能深一些，以展现屋主的品位与气派。但屋主喜欢的豪华并非金雕玉砌的那种，而是像泰式度假屋或五星级酒店的清雅舒适，

关键词：水晶五星级酒店设计风格设计师 minimal

Testing heteroscedasticity by wavelets in a nonparametric regression model

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Science China Mathematics 2006年第9期49卷 1211-1222页

作者： ip Waicheung Department of Applied Mathematics Hong Kong Polytechnic UniversityHong KongChina

In the nonparametric regression models, a homoscedastic structure is usually assumed. However, the homoscedasticity cannot be guaranteed a priori. Hence, testing the heteroscedasticity is needed. In this paper we propose a consistent nonparametric test for heteroscedasticity, based on wavelets. The empirical wavelet coefficients of the conditional variance in a regression model are defined first. Then they are shown to be asymptotically normal, based on which a test statistic for the heteroscedasticity is constructed by using Fan's wavelet thresholding idea. Simulations show that our test is superior to the traditional nonparametric test.

关键词： regression model, heteroscedasticity, significance test, wavelets.

Testing coeffcients of AR and bilinear time series models by a graphical approach

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Science China Mathematics 2008年第12期51卷 2304-2314页

作者： ip WaiCheung Department of Mathematics The Hong Kong Polytechnic University

AR and bilinear time series models are expressed as time series chain graphical models, based on which, it is shown that the coefficients of AR and bilinear models are the conditional correlation coefficients conditioned on the other components of the time series. Then a graphically based procedure is proposed to test the significance of the coeffcients of AR and bilinear time series. Simulations show that our procedure performs well both in sizes and powers.

关键词： AR model bilinear model graphical model

ON PROBLEMS OF FRACTURE OF MATERIALS IN COMPRESSION ALONG TWO INTERNAL PARALLEL CRACKS

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Applied Mathematics and Mechanics(English Edition) 1997年第6期18卷 517-528页

作者： Guz, AN Nazarenko, VM Starodubtsev, ip Natl Acad Sci Ukraine Inst Mech UA-252057 Kiev Ukraine

The fracture of materials under the action of compressive forces, directed along cracks which are parallel in plane can,lot be described within the framework of the linear fracture mechanics. The criteria of fracture of the Griffith-Irvin or COC type, used in classical linear fracture mechanics, are not applicable in this problem, since these forces have no influence on stress intensity coefficients and on values of cracks opening([1, 2]). The problems of such a class may be described only by using new approaches. One of possible approaches is presented by the first author, which involves using linearized relations, derived from exact non-linear equations of deformable solid body mechanics([3, 4, 5]). It should be remarked here that this approach has been widely used in problems of deformable bodies stability. As a criterion of the initiation of fracture the criterion of local instability near defects of the crack type is used. In these cases the process of loss of stability initiates the fracture process.

关键词： fracture internal parallel crack criterion of the initiation of fracture

Versatile guardians: regenerative regulatory T cells in Parkinson’s disease rodent models

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Signal Transduction and Targeted Therapy 2023年第12期8卷 5578-5580页

作者： Chi Wang ip Jörg Wischhusen Department of Neurology University Hospital of WürzburgWürzburgGermany Section for Experimental Tumor Immunology Department of Obstetrics and GynecologyUniversity Hospital of WürzburgWürzburgGermany

In a paper published in Nature,Park and colleagues have explored an innovative approach for improving adoptive neuron transfer,with possible implications for Parkinson´s Disease(PD)and other neurodegenerative diseases.1 By co-transplanting autologous regulatory T(Treg)cells,they managed to reduce surgical trauma-induced neuroinflammation,enhance the safety of cell replacement therapy by inhibiting proliferation of non-dopaminergic cells and improve therapeutic outcomes.

关键词： inflammation inhibiting trauma

ARMILLARIA TRAPPING IN A PINUS KORAIENSIS PLANTATION IN NORTHEAST CHINA

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Journal of Northeast Forestry University 1992年第2期3卷 1-12页

作者： David Waigcck ip Forestry Canada Winnipeg Manitoba Canada R3C 1A6

Trap bags were used to assess the presence of an Armillaria species in a Pinus koraiensis plantation in Heilongjiang, China. 216 trap bags containing bark were placed in three plots at 2×2m spacing. After 10 weeks, the presence of Armillaria was determined from the growth of rhizomorphs in the trap bags. The trap bag method proved successful in determining the presence of viable Armillaria rhizomorphs where only a few dead trees showed signs of the disease. The distribution of positive traps corresponded generally with the presence of rhizomorphs in the soil taken from the trap holes. However, the trap bags were superior to soil samples for evaluating the presence of viable rhizomorphs. The fresh, abundant rhizomorphs were easily identified by persons inexperienced in the assessment of Armillaria root rot. Several practical problems need to be solved before the method is applicable in general forest management in China.

关键词： Armillaria,Disease management Northeast China Pinus koraiensis Plantation discase Trapping

AN OSCILLATION CRITERIA FOR SECOND ORDERFUNCTIONAL EQUATIONS

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Acta Mathematica Scientia 2002年第1期22卷 56-62页

作者：申建华 ip. Stavroulakis Hunan Normal Univ Dept Math Changsha 410081 Peoples R China Univ Ioannina Dept Math GR-45110 Ioannina Greece

This paper is concerned with the oscillation of second order linear functional equations of the form x(g(t)) = p(t)x(t) + Q(t)X(g(2)(t)), Where p, Q, g : [t(0), infinity) --> R+ = [0, infinity) are given real valued functions such that g(t) not equivalent to t, lim(t-->infinity) g(t) = infinity. It is proved here that when 0 less than or equal to m := lim inf(t-->infinity) Q(t)P(g(t)) less than or equal to 1/4 all solutions of this equation oscillate if the condition lim(t-->infinity) sup Q(t)P(g(t)) > (1 + root1 -4m/2)(2) (*) is satisfied. It should be emphasized that the condition (*) can not be improved in some sense.

关键词： oscillation nonoscillation functional equations

Field test of multi-hop image sensing network prototype on a city-wide scale

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Digital Communications and Networks 2019年第2期5卷 131-137页

作者： Xianhui Che Barry ip Zhuge Yan School of Computer Science University of HertfordshireALIO 9GHUK Robert Kennedy College Technoparkstrasse 18005 ZurichSwitzerland Department of Electrical and Electronic Engineering University of Nottingham Ningbo Campus315100NingboChina

Wireless multimedia sensor networks drastically stretch the horizon of traditional monitoring and surveillance systems. Most existing research has utilized Zigbee or WiFi as the communication technology. Both technologies use ultra-high frequencies (primarily 2.4 GHz) and suffer from a relatively short transmission range (i.e., 100 m line-of-sight). The objective of this study is to assess the feasibility and potential of transmitting image information using RF modules with lower frequencies (e.g., 433 MHz) to achieve a larger-scale deployment as in a city scenario. The Arduino platform is used because of its low cost and simplicity. Details of hardware properties are provided in this article, and we investigate optimum configurations for the system. After achieving an initial range test transmission distance of more than 2000 m line-of-sight, the prototype network is installed in a real life city plot for further examination of performance. A range of suitable applications is proposed and suggestions for future research are provided.

关键词： Image sensing Prototype Field test

Model Checking for a General Linear Model with Nonignorable Missing Covariates

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Acta Mathematicae Applicatae Sinica 2012年第1期28卷 99-110页

作者： Zhi-hua SUN Wai-Cheung ip Heung WONG School of Mathematical sciences Graduate University of Chinese Academy of SciencesBeijing 100049China Academy of Mathematics and Systems Science Chinese Academy of SciencesBeijing 100190China Department of Applied Mathematics Hong Kong Polytechnic UniversityHung HomKowloonHong KongChina

In this paper, we investigate the model checking problem for a general linear model with nonignorable missing covariates. We show that, without any parametric model assumption for the response probability, the least squares method yields consistent estimators for the linear model even if only the complete data are applied. This makes it feasible to propose two testing procedures for the corresponding model checking problem： a score type lack-of-fit test and a test based on the empirical process. The asymptotic properties of the test statistics are investigated. Both tests are shown to have asymptotic power 1 for local alternatives converging to the null at the rate n-r, 0 ≤ r 〈 1/2. Simulation results show that both tests perform satisfactorily.

关键词： general linear model model checking nonignorable missing covariates sensitivity analysis