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Search Results: 1 - 10 of 47274 matches for " TAN Yong-jie "
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Uniqueness of Common Fixed Points for a Family of Mappings with Φ-Contractive Condition in 2-Metric Spaces  [PDF]
Yong-Jie Piao
Applied Mathematics (AM) , 2012, DOI: 10.4236/am.2012.31012
Abstract: In this paper, we will introduce a class of 5-dimensional functions Φ and prove that a family of self-mappings {Ti,j} iεN in 2-metric space have an unique common fixed point if 1) {Ti,j} iεN satisfies Φj-contractive condition, where ΦjεΦ, for each jεN ; 2) Tm,μ n,v for all m,n,μ,vεN with μ ≠ v . Our main result generalizes and unifies many known unique common fixed point theorems in 2-metric spaces.
Image scrambling degree evaluation method based on GRA
基于灰色关联分析的图像置乱程度评价方法

MA Miao,TAN Yong-jie,HE Xue-li,
马苗
,谭永杰,何雪莉

计算机应用研究 , 2009,
Abstract: In order to evaluate the image scrambling degree effectively, introducing the grey relation analysis theory, and then suggested a new method of image scrambling. The method firstly divided the scrambled image into several blocks, then computed the average of every line pixel values in the sub-images to static the gray information sequence of each blocks, and made these sequences be small samples sequences. Finally calculated the gray relevancy of every two sequences using gray relation analysis to evaluate the image scrambling degree. Experimental results show that the method can efficiently evaluate the scrambling effect of different scrambling transformation, running without the origin image involved. Compared with SNR, it can eva-luate the scrambling effect more objectively and be consistent with the perception of human visual system.
Diagnosis and surgical treatment of primary hepatic lymphoma
Xin-Wei Yang, Wei-Feng Tan, Wen-Long Yu, Song Shi, Yi Wang, You-Lei Zhang, Yong-Jie Zhang, Meng-Chao Wu
World Journal of Gastroenterology , 2010,
Abstract: AIM: To assess the benefits and limits of surgery for primary hepatic lymphoma (PHL), and probability of survival after postoperative chemotherapy.METHODS: A retrospective analysis was undertaken to determine the results of surgical treatment of PHL over the past 8 years. Only nine patients underwent such treatment. The detailed data of diagnosis, treatment, and prognosis were carefully studied.RESULTS: All patients were mistaken as having α-fetoprotein-negative hepatic cancer before pathological diagnosis. The mean delay time between initial symptoms and final diagnosis was 26.8 d (range: 14-47 d). Hepatitis B virus infection was noted in 33.3% of these patients. Most of the lesions were found to be restricted to a solitary hepatic mass. The surgical procedure performed was left hepatectomy in five cases, including left lateral segmentectomy in three. Right hepatectomy was performed in three cases and combined procedures in one. One patient died on the eighth day after surgery, secondary to hepatic insufficiency. The cumulative 6-mo, 1-year, and 2-year survival rates after hepatic surgery were, respectively, 85.7%, 71.4%, and 47.6%. One patient survived for > 5 years after surgery without any signs of recurrence until latest follow-up, who received routine postoperative chemotherapy every month for 2 years and then regular follow-up. By univariate analysis, postoperative chemotherapy was a significant prognostic factor that influenced survival (P = 0.006).CONCLUSION: PHL is a rare entity that is often misdiagnosed, and has a potential association with chronic hepatitis B infection. The prognosis is variable, with good response to early surgery combined with postoperative chemotherapy in strictly selected patients.
Distribution characteristics and influence factors of present geo-temperature field in Su-Lin mine area, Huaibei coalfield
淮北煤田宿临矿区现今地温场分布特征及其影响因素

TAN Jing-Qiang,JU Yi-Wen,HOU Quan-Lin,ZHANG Wen-Yong,Tan Yong-Jie,
谭静强
,琚宜文,侯泉林,张文永,谭永杰

地球物理学报 , 2009,
Abstract: 淮北煤田是我国华东地区最主要的能源供给基地之一,研究其现今地温场特征既是强烈的现实要求,也具有十分重要的理论意义.本文在淮北煤田宿临矿区区域地质研究的基础上,根据位于宿临矿区内不同构造单元中的8个主要煤矿井田及其邻近区域111个钻孔的测温数据,绘制了矿区现今地温一深度关系图、现今地温梯度一深度关系图以及不同构造单元的现今地温梯度分布图,分析了宿临矿区现今地温场的分布特征.研究表明,宿临矿区现今地温梯度分布范围介于1.50~3.80℃/hm,整个矿区平均现今地温梯度约为2.65℃/hm,与华北其他主要能源盆地相比有所差异.宿临矿区现今地温梯度在相同构造单元内分布具有褶皱隆起区高、断裂密集区域高的特点;不同构造单元中井田的平均现今地温梯度相比较则表现出由东部构造单元至西部构造单元逐步增高的趋势.分析表明,区内现今地温场主要受构造格局和岩性变化影响.
Nonstationarity Measure of Data Stream
数据流的非平稳性度量

DING Yi-Ming,FAN Wen-Tao,TAN Qiu-Heng,WU Ke-Kun,ZOU Yong-Jie,
丁义明
,范文涛,谭秋衡,吴克坤,邹永杰

数学物理学报(A辑) , 2010,
Abstract: We study the nonstationarity measure for data streams by integration ideas from ergodic theory, coarse grain and information theory. We introduce nonstationarity measure for data streams. An effective approximation algorithm is designed for implementation. The nonstationarity measure is a real number between 0 and 1. The nonstationarity measure is smaller for a more stationary data stream. We apply the nonstationarity measure to model selection, and propose a criterion for model selection which requires least nonstationarity measure for residual sequence. Numerical experiments are performed to test our approximation algorithm and to validate the least nonstationarity measure as a criterion for model selection. The numerical results indicate that the nonstationarity measure is a sound index to compare the level of nonstationarity among data streams. By comparing the nonstationarity measure, we can distinguish trend-stationary process and difference-stationary process effectively, and discern i.i.d. sequence, white noise sequence and martingale difference sequence.
Fixed Points and Variational Inequalities |with Lower and Upper Bounds in Topological Spaces
拓扑空间上不动点和具有上下界的变分不等式

PIAO Yong-Jie,
朴勇杰

数学物理学报(A辑) , 2012,
Abstract: Based on an KKM type theorem and a Fan-Browder type fixed point theorem on generalized convex space, some new fixed point theorems for a Φ-map and a weak Φ-map defined on topological spaces without any convex and linear structure and any compact setting are obtained. As applications, some existence problems of solutions for variational inequalities with lower and upper bounds were discussed in non-compact topological spaces.
Unique Common Fixed Point |for a Family of Quasi-contractive Type Maps in Metrically Convex Spaces
度量凸空间上拟收缩型映射族的唯一公共不动点

PIAO Yong-Jie,
朴勇杰

数学物理学报(A辑) , 2010,
Abstract: Existence and uniqueness theorem on a common fixed point for a family of non-self mappings satisfying a quasi-contractive condition on complete metrically convex metric space is given,and from which,more general unique common fixed point theorems are obtained.The main results generalize and improve many fixed point theorems of the same type in references.
1-(4-Chlorophenyl)-3-phenyl-1H-pyrazol-5(4H)-one
Yong-Jie Ding,Chun-Xiang Zhao
Acta Crystallographica Section E , 2010, DOI: 10.1107/s1600536809055263
Abstract: In the crystal of the title compound, C15H11ClN2O, the molecules are linked by C—H...O and weak C—H...π interactions. The chlorophenyl and phenyl rings are twisted with respect to the central pyrazolone ring, making dihedral angles of 18.23 (8) and 8.35 (8)°, respectively. The N—N and C=O bond lengths are comparable to those reported for pyrazolone compounds.
catena-Poly[[[aqua(5-nitrobenzene-1,2,3-tricarboxylato-κO1)copper(II)]-di-μ-aqua-[diaquasodium]-di-μ-aqua] tetrahydrate]
Yong-Jie Ding,Chun-Xiang Zhao
Acta Crystallographica Section E , 2010, DOI: 10.1107/s1600536810000401
Abstract: In the heteronuclear coordination polymer, {[CuNa(C9H2NO8)(H2O)7]·4H2O}n, the CuII atom is coordinated by six O atoms from five water molecules and one 5-nitrobenzene-1,2,3-tricarboxylate ligand in a slightly distorted octahedral geometry. The Na+ cation is surrounded by six water molecules in an irregular trigonal-prismatic geometry. The Cu and Na atoms are connected by water bridges, forming an infinite chain. O—H...O hydrogen bonds involving the coordinated and uncoordinated water molecules connect the chains into a three-dimensional network.
Expression profile and prognostic role of sex hormone receptors in gastric cancer
Gan Lu,He Jian,Zhang Xia,Zhang Yong-Jie
BMC Cancer , 2012, DOI: 10.1186/1471-2407-12-566
Abstract: Background Increasing interest has been devoted to the expression and possible role of sex hormone receptors in gastric cancer, but most of these findings are controversial. In the present study, the expression profile of sex hormone receptors in gastric cancer and their clinicopathological and prognostic value were determined in a large Chinese cohort. Methods The mRNA and protein expression of estrogen receptor alpha (ERα), estrogen receptor beta (ERβ), progesterone receptor (PR), and androgen receptor (AR) in primary gastric tumors and corresponding adjacent normal tissues from 60 and 866 Chinese gastric cancer patients was detected by real-time quantitative PCR and immunohistochemistry method, respectively. The expression profile of the four receptors was compared and their associations with clinicopathological characteristics were assessed by using Chi-square test. The prognostic value of the four receptors in gastric cancer was evaluated by using univariate and multivariate Cox regression analysis. Results The presence of ERα, ERβ, PR, and AR in both gastric tumors and normal tissues was confirmed but their expression levels were extremely low except for the predominance of ERβ. The four receptors were expressed independently and showed a decreased expression pattern in gastric tumors compared to adjacent normal tissues. The positive expression of the four receptors all correlated with high tumor grade and intestinal type, and ERα and AR were also associated with early TNM stage and thereby a favorable outcome. However, ERα and AR were not independent prognostic factors for gastric cancer when multivariate survival analysis was performed. Conclusions Our findings indicate that the sex hormone receptors may be partly involved in gastric carcinogenesis but their clinicopathological and prognostic significance in gastric cancer appears to be limited.
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