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Quad-Band Bandpass Filter Using Quad-Mode Stub-loaded Resonators
Haiwen Liu,Xiaomei Wang,YAN WANG,Shen Li,Yulong Zhao,Xuehui Guan 한국전자통신연구원 2014 ETRI Journal Vol.36 No.4
Compact multi-band bandpass filters using quad-mode stubloadedresonators are proposed in this letter. Firstly, a novelapproach about the mode-splitting characteristics of thequadruple-mode resonator is investigated, which can providedual-band behavior. Secondly, a quad-band filter is proposedand designed by cascading two quadruple-mode resonators;the upper one operates at 1.8/2.4 GHz (GSM- and WiMaxband)and the lower one at 1.57/2.1 GHz (GPS- and WCDMAband). Finally, the proposed filters have been fabricated. Respectable agreement between simulation and measurementverifies the validity of this design methodology.
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Novel Quasi-Elliptic Function Bandpass Filter Using Hexagonal Resonators with Capacitive Loading
Changtao Wang,Wenming Li,Feng Liu,Haiwen Liu 한국전자통신연구원 2008 ETRI Journal Vol.30 No.4
A novel and compact elliptic-function bandpass filter is proposed in this letter. The techniques of slot etching and the addition of open stubs are applied to enhance the self-inductance and self-capacitance of hexagonal openloop resonators. Thus, size reduction and improved transmission performance are obtained. Compared to the performance of the conventional design, the central frequency and insertion loss are reduced by 28% and 3.1 dB, respectively. Measurements show that the proposed filter has a fraction bandwidth of 23% at the central frequency of 1.84 GHz, and its insertion loss in the passband is less than -1.5 dB. The bandpass filter occupies only 12 mm×21.2 mm (approximately 0.24λg×0.14λg).
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FINITE ELEMENT MODELING FOR CONCRETE RANDOM PARTICLE MODEL
YanHui Yin,HaiWen Wang 한국멀티미디어학회 2006 한국멀티미디어학회 국제학술대회 Vol.2006 No.-
How to select the reasonable aggregate based on the engineering need and the actual condition of the locality and perform effectually computational simulation base on the type of the aggregate is important. This paper generalize the affection of all kinds of parameters of the aggregate to the concrete function base on the importance of concrete aggregate and lots of engineering background. The geometrical representation and finite element mesh of concrete random particle model are all generated automatically in this paper.
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BACKWARD EXTENSIONS OF BERGMAN-TYPE WEIGHTED SHIFT
Li, Chunji,Qi, Wentao,Wang, Haiwen Korean Mathematical Society 2020 대한수학회보 Vol.57 No.1
Let m ∈ ℕ<sub>0</sub>, p > 1 and $${\alpha}^{[m,p]}(x)\;:\;{\sqrt{x}},\;\{{\sqrt{\frac{(m+n-1)p-(m+n-2)}{(m+n)p-(m+n-1)}}}\}^{\infty}_{n=1}$$. In this paper, we consider the backward extensions of Bergman-type weighted shift W<sub>α<sup>[m,p]</sup></sub><sub>(x)</sub>. We consider its subnormality, k-hyponormality and positive quadratic hyponormality. Our results include all the results on Bergman weighted shift W<sub>α(x)</sub> with m ∈ ℕ and $${\alpha}(x)\;:\;{\sqrt{x}},\;{\sqrt{\frac{m}{m+1}},\;{\sqrt{\frac{m}{m+2}},\;{\sqrt{\frac{m+2}{m+3}},{\cdots}$$.
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RBPJ contributes to acquired docetaxel resistance in prostate cancer cells
Li Xue,Zhenlong Wang,Hecheng Li,Zhaolun Li,Qi Chen,Peng Zhang,Haiwen Chen,Ziming Wang,Tie Chong,T. Chong 대한독성 유전단백체 학회 2017 Molecular & cellular toxicology Vol.13 No.3
Our previous work has shown that depletion of recombination signal-binding protein J (RBPJ) results in reduced cell growth in prostate cancer cells. In this study, we aimed to investigate the function of RBPJ in the chemoresistance of prostate cancer. The expression of RBPJ was quantified in docetaxel-resistant and parental prostate cancer cells. Loss- and gainof- function experiments were conducted to explore the regulatory role of RBPJ in prostate cancer sensitivity to docetaxel. The pro-apoptotic effect of RBPJ silencing was checked in docetaxel-resistant prostate cancer cells. We found that docetaxel-resistant PC3-DR and DU145- DR cells expressed 3-5-fold high levels of RBPJ than parental PC3 and DU145 cells. Short hairpin RNAmediated knockdown of RBPJ inhibited cell proliferation and colony formation and reversed docetaxel resistance in docetaxel-resistant prostate cancer cells. In contrast, overexpression of RBPJ promoted cell growth, colony formation, and docetaxel resistance in parental prostate cancer cells. Downregulation of RBPJ induced apoptosis in docetaxel-resistant cells, which was accompanied by enhanced cleavage of caspase-3. In addition, RBPJ silencing or overexpression markedly modulated the expression of the Bcl-2 family members including Bcl-2, Bcl-xL, Mcl-1, Bax, and Bak. Altogether, RBPJ contributes to acquisition of docetaxel resistance in prostate cancer cells and may thus represent a potential target for overcoming chemotherapeutic resistance in this malignancy.
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Backward extensions of Bergman-type weighted shift
Chunji Li,Wentao Qi,Haiwen Wang 대한수학회 2020 대한수학회보 Vol.57 No.1
Let $m\in \mathbb{N}_{0}$, $p>1$ and $$\alpha ^{\left[ m,p\right] }\left( x\right) :\sqrt{x},\left\{ \sqrt{\frac{\left( m+n-1\right) p-\left( m+n-2\right) }{\left( m+n\right) p-\left( m+n-1\right) }}\right\} _{n=1}^{\infty }.$$ In this paper, we consider the backward extensions of Bergman-type weighted shift $W_{\alpha ^{\left[ m,p\right] }\left( x\right) }.$ We consider its subnormality, $k$-hyponormality and positive quadratic hyponormality. Our results include all the results on Bergman weighted shift $W_{\alpha \left( x\right) }$ with $m\in \mathbb{N}$ and $$\alpha \left( x\right) :\sqrt{x},\sqrt{\frac{m}{m+1}},\sqrt{\frac{m+1}{m+2}},\sqrt{\frac{ m+2}{m+3}},\ldots .$$
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Zhiqiang Zheng,Yongxin Liu,Haiwen Yuan,Qiusheng Wang 제어·로봇·시스템학회 2012 International Journal of Control, Automation, and Vol.10 No.3
This note developed a distributed fault detection and isolation scheme for a class of large-scale systems in discrete-time framework. The unstructured modeling uncertainty and abrupt and incipient faults are considered in this scheme. By using overlapping decompositions, the large-scale system is decomposed into a set of subsystems which are monitored by a network of local fault detectors (LFDs) and local fault isolation estimators (LFIEs). Specially, the LFIEs, corresponding the faults af-fecting the common components among different subsystems, may reach a cooperative (or consensus) isolation decision, based on the fact that they can exchange some knowledge about the local information of system by suitable communication links. As a result, for these LFIEs, the capability of isolating faults may be improved. Moreover, the derivation of rigorous analytical results for the detectability and isolability properties of the proposed scheme is given. Simulation results are provided to show the effectiveness of the presented scheme.
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