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肥胖儿童non-HDL-C、remnant cholesterol与亚临床动脉粥样硬化的关系 被引量:4
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作者 焦朝艳 刘戈力 +4 位作者 鲍鹏丽 魏莹 杨箐岩 郑荣秀 赵菁 《天津医科大学学报》 2014年第1期25-28,共4页
目的:了解non-HDL-C和remnant cholesterol与肥胖儿童亚临床动脉粥样硬化(AS)的关系。方法:根据甘油三酯(TG)水平将65例肥胖儿童(肥胖组)分为I组(TG≥2.3 mmol/L)32例,II组(TG<2.3 mmol/L)33例,与肥胖组儿童性别年龄相匹配的正常体... 目的:了解non-HDL-C和remnant cholesterol与肥胖儿童亚临床动脉粥样硬化(AS)的关系。方法:根据甘油三酯(TG)水平将65例肥胖儿童(肥胖组)分为I组(TG≥2.3 mmol/L)32例,II组(TG<2.3 mmol/L)33例,与肥胖组儿童性别年龄相匹配的正常体质量儿童30例为III组(对照组)。比较3组儿童血脂指标,对肥胖组各项血脂指标与血浆致动脉粥样硬化指数(AIP)进行相关性分析,肥胖患儿体质指数、血脂指标与颈动脉内径、内膜-中层厚度(c-IMT)、血流参数进行相关性分析。结果:I组、II组的TG、总胆固醇(TC)、低密度脂蛋白胆固醇(LDL-C)、non-HDL-C、remnant cholesterol、AIP均较对照组升高,高密度脂蛋白胆固醇(HDL-C)较对照组降低,且I组的remnant cholesterol、AIP均较II组升高。肥胖组儿童AIP与TG、non-HDL-C、remnant cholesterol呈正相关,与HDL-C呈负相关。37例行颈动脉超声检查的肥胖儿童的c-IMT较正常儿童的增厚。结论:non-HDL-C、remnant cholesterol在肥胖儿童亚临床AS中有重要作用,在肥胖儿童血脂异常的治疗中应关注non-HDL-C、remnant cholesterol的变化。 展开更多
关键词 儿童肥胖 亚临床动脉粥样硬化 non—HDL—C REMNANT CHOLESTEROL 血浆致动脉粥样硬化指数 颈动脉内膜-中层厚度
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EXISTENCE AND UNIQUENESS OF SOLUTIONS FOR NONLINEAR FRACTIONAL DIFFERENTIAL EQUATIONS WITH NON-SEPARATED TYPE INTEGRAL BOUNDARY CONDITIONS 被引量:6
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作者 Bashir Ahmad Juan J. Nieto Ahmed Alsaedi 《Acta Mathematica Scientia》 SCIE CSCD 2011年第6期2122-2130,共9页
In this paper, we study a boundary value problem of nonlinear fractional dif- ferential equations of order q (1 〈 q 〈 2) with non-separated integral boundary conditions. Some new existence and uniqueness results a... In this paper, we study a boundary value problem of nonlinear fractional dif- ferential equations of order q (1 〈 q 〈 2) with non-separated integral boundary conditions. Some new existence and uniqueness results are obtained by using some standard fixed point theorems and Leray-Schauder degree theory. Some illustrative examples are also presented. We extend previous results even in the integer case q = 2. 展开更多
关键词 fractional differential equations non-separated integral boundary conditions contraction principle Krasnoselskii's fixed point theorem LeraySchauder degree
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Shenqi Fuzheng injection combined with GP chemotherapy in the treatment of advanced non-small cell lung cancer: a meta-analysis 被引量:13
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作者 Qiang Zhang Yi-Huan Fan +2 位作者 Teng Zhang Xiao-Lan Qin Ji-Fang Song 《TMR Integrative Medicine》 2017年第2期68-78,共11页
Objective: To evaluate the clinical efficacy of Shenqi Fuzheng injection combined with gemcitabine plus cisplatin(GP) in the treatment of advanced non-small cell lung cancer (NSCLC). Methods: we performed a syst... Objective: To evaluate the clinical efficacy of Shenqi Fuzheng injection combined with gemcitabine plus cisplatin(GP) in the treatment of advanced non-small cell lung cancer (NSCLC). Methods: we performed a systematicsearch in the electronic databases such as Cochrane Library, Pubmed, Embase, Chinese Journal Full-text Database,Chinese Biomedical Literature Database, Chinese Science and Technology Periodical Full-text Database andWanfang Database up to 30 January 2017. Randomized controlled trials (RCT) of Shenqi Fuzheng Injectioncombined with GP chemotherapy in the treatment of advanced NSCLC were searched, and all the RCTs wereconducted on methodological quality assessment. Data extraction and data analysis were according to standards ofCochrane systematic review. Results: Eight trials were included including a total of 701 patients. Meta-analysisresults: Shenqi Fuzheng injection combined with GP chemotherapy could significantly improve the functionalstatus of patients with NSCLC (OR = 3.44, 95% CI [2.26, 5.25], P 〈 0.0001) and clinical treatment efficacy (OR =(OR = 0.31, 95%CI [0.20, 0.47], P 〈 0.0001. The rate of leukopenia (OR = .31, 95%CI [0.20,0.47], P 〈 0.0001),thrombocytopenia (OR = 0.58, 95%CI [0.37, 0.91], P = 0.020), hemoglobin decline ((OR = 0.31, 95%CI [0.16,0.59], P = 0.0004) and incidence of gastrointestinal reactions (OR = 0.58,P 〈 0.05) could be reduced. Conclusion:Shenqi Fuzheng injection combined with GP chemotherapy in the treatment of advanced NSCLC obtainedsignificantly clinical efficacy. The quality of the literature incorporated is low, the conclusion requires high-qualityresearch to further prove. 展开更多
关键词 Shenqi Fuzheng GP chemotherapy Advanced non - small cell lung cancer Meta analysis
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New Fixed Point Results of Generalized g-Quasi-Contractions in Cone b-Metric Spaces Over Banach Algebras 被引量:1
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作者 Shaoyuan Xu Suyu Cheng +1 位作者 Suzana Aleksic Yongjie Piao 《Analysis in Theory and Applications》 CSCD 2017年第2期118-133,共16页
In this paper, we introduce the concept of generalized g-quasi-contractions in the setting of cone b-metric spaces over Banach algebras. By omitting the assump- tion of normality we establish common fixed point theore... In this paper, we introduce the concept of generalized g-quasi-contractions in the setting of cone b-metric spaces over Banach algebras. By omitting the assump- tion of normality we establish common fixed point theorems for the generalized g- quasi-contractions with the spectral radius r(λ) of the g-quasi-contractive constant vector λ satisfying r(λ) ∈[0,1) in the setting of cone b-metric spaces over Banach al- gebras, where the coefficient s satisfies s ≥ 1. The main results generalize, extend and unify several well-known comparable results in the literature. 展开更多
关键词 Cone b-metric spaces over Banach algebras non-normal cones c-sequences general-ized g-quasi-contractions fixed point theorems.
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Analysis of Numerical Results in High Temperature Congealment and Chemistry Non-equilibrium Flow Field
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作者 Hong-tao Zheng Zhi-yong Tan +2 位作者 Hai-ou Sun Chun-liang Zhou Zhi-ming Li 《Journal of Marine Science and Application》 2002年第1期26-34,共9页
Using the air plasma ignition technique, physicochemical process of burning can be accelerated; concentration limit ofretrofires both can be extended; reliability of retrofires and stability of burning can be improved... Using the air plasma ignition technique, physicochemical process of burning can be accelerated; concentration limit ofretrofires both can be extended; reliability of retrofires and stability of burning can be improved. In this paper, using internalequivalent heat area in place of electric are that created Ohm heat, the flow fields of thermodynamic equilibrium chemistry con-gealment and chemistry non-equilibrium in the plasma generator were simulated. The influences of the inlet prerotation angleof air, the inlet total pressure of air and the airflow compression angle of spray nozzle on the temperature on the surface of elec- 展开更多
关键词 plasma GENERATOR CHEMISTRY non - EQUILIBRIUM IGNITION technique numerical calculation
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Switching Regimes in Economics: The Contraction Mapping and the &omega;-Limit Set
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作者 Pascal Stiefenhofer Peter Giesl 《Applied Mathematics》 2019年第7期513-520,共8页
This paper considers a dynamical system defined by a set of ordinary autonomous differential equations with discontinuous right-hand side. Such systems typically appear in economic modelling where there are two or mor... This paper considers a dynamical system defined by a set of ordinary autonomous differential equations with discontinuous right-hand side. Such systems typically appear in economic modelling where there are two or more regimes with a switching between them. Switching between regimes may be a consequence of market forces or deliberately forced in form of policy implementation. Stiefenhofer and Giesl [1] introduce such a model. The purpose of this paper is to show that a metric function defined between two adjacent trajectories contracts in forward time leading to exponentially asymptotically stability of (non)smooth periodic orbits. Hence, we define a local contraction function and distribute it over the smooth and nonsmooth parts of the periodic orbits. The paper shows exponentially asymptotical stability of a periodic orbit using a contraction property of the distance function between two adjacent nonsmooth trajectories over the entire periodic orbit. Moreover it is shown that the ω-limit set of the (non)smooth periodic orbit for two adjacent initial conditions is the same. 展开更多
关键词 non-SMOOTH Periodic ORBIT Differential Equation contractION Mapping Economic Regimes non-SMOOTH DYNAMICAL System
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Turbulent Flow Action of Pulp in Wet - Laid Non - Woven Processes
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作者 程隆棣 黄秀宝 于修业 《Journal of China Textile University(English Edition)》 EI CAS 2000年第3期57-59,共3页
The paper deals with the fluid field of web forming in wet-laid non-woven production.The influence of the turbulent flow on blending fiber and occluded fluid produced in pulp flow has been discussed in theory and prac... The paper deals with the fluid field of web forming in wet-laid non-woven production.The influence of the turbulent flow on blending fiber and occluded fluid produced in pulp flow has been discussed in theory and practice.The suitable use of the imported velocity of pulp is very important in producing wet-laid products of good quality. 展开更多
关键词 WET - laid non - woven fiber PULP FLOW TURBULENT FLOW layer FLUID occluded FLUID .
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CYFRA 21-1 as an early predictor of first line chemotherapy response in advanced non small cell lung cancer
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作者 Kashif Iqbal 《The Chinese-German Journal of Clinical Oncology》 CAS 2007年第3期250-253,共4页
Objective: In an era of ever evolving, promising new therapies for advanced non small cell lung cancer (NSCLC), early predictors of response to therapy, are needed. We evaluated early variations in CYFRA 21-1 serum... Objective: In an era of ever evolving, promising new therapies for advanced non small cell lung cancer (NSCLC), early predictors of response to therapy, are needed. We evaluated early variations in CYFRA 21-1 serum levels of patients with advanced NSCLC receiving first line chemotherapy and correlated the results with objective tumor response. Methods: 29 consecutive, previously untreated, patients of advanced non small cell lung cancer, with measurable disease on CT scan were evaluated. All patients were treated with conventional systemic chemotherapy, although the choice of chemotherapy was left to the discretion of the treating physicians. Serum samples were obtained immediately before the start of 1st and 2nd cycles of chemotherapy. CYFRA 21-1 was measured with an electrochemiluminescense immunoassay on an automatic analyzer (Elecsys 2000; Roche Diagnostics). Response was evaluated using Response evaluation criteria in solid tumors (RECIST) criteria. Results: 10 patients had partial response, 9 patients had stable disease and 9 had progressive disease. None of the patients had complete response. 21/29 (72%) patients had an elevated baseline value of CYFRA 21-1.62% patients (18/29) had a decrease in CYFRA 21-1 after 1 cycle of chemotherapy. The average reduction in the 2nd reading was irrespective of whether baseline value was normal or not. The average reduction was statistically significant (P = 0.002; 95% CI, from 0.8369 to 3.49464; t test). 8 out of 10 (80%) patients with partial response had a reduction in their 2nd reading of. CYFRA (P = 0.019; 95% CI, from 0.81965 to 7.20035; t test) which was significant. We also observed that 6/9 (66%) patients whose disease remains stable also had a decrease in their subsequent reading (P = 0.0106; 95% CI, from -0.44942 to 3.82720; t test), though it was not significant statistically. Although 5 out of 9 (55%) patients, who had an increase in their CYFRA 21-1 level, had progressive disease, but it was not statistically significant (P = 0.537; 95% CI, from -1.20021 to 2.13354; ttest). 14 out of 19 (73%) who either had partial response or had stable disease, had a reduction in their 2nd value of CYFRA 21-1 and was significant statistically (P = 0.004; 95% CI, from 0.74792 to 3.50208; t test). We also observed that except for 1 patient, all patients who had a decrease of 42% or more in their subsequent CYFRA 21-1 level, were those who had either responded to chemotherapy or had stable disease (P = 0.001), which was statistically significant. Conclusion: We can conclude that monitoring of serum marker CYFRA 21-1, early dudng first-line chemotherapy may be a useful prognostic tool for evaluation of early tumor response in patients with advanced NSCLC. 展开更多
关键词 CYFRA 21-1 non small cell lung cancer CHEMOTHERAPY RESPONSE
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A STUDY OF THE SPECIMEN SIZE OF STRIP TENSILE TEST FOR NEEDLE-PUNCHED NON-WOVEN GEOTEXTILES
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作者 储才元 《Journal of China Textile University(English Edition)》 EI CAS 1993年第1期33-39,共7页
In this paper,the failure features of strip tensile specimen were observed and analysed for need-le-punched non-woven geotextiles.A mechanical model which expresses the relation between thetensile modulus,the strip sp... In this paper,the failure features of strip tensile specimen were observed and analysed for need-le-punched non-woven geotextiles.A mechanical model which expresses the relation between thetensile modulus,the strip specimen size,contraction factor and the tensile strength of non-wovenfabric was derived.The theoretical prediction showed that the main factor influencing tensilestrength of non-woven geotextile specimens with different size is the contraction factor of specimenor the specimen aspect ratio(width/length).The larger the aspect ratio,the higher the tensilestrength test value of geotextiles,but the experiments showed that the specimen tensile strength isnot increased with increasing the width of specimen.The reason was discussed and it seemed thatthe deviation could be served as an indication of the degree of imperfectness of the non-wovenstructure. 展开更多
关键词 TENSILE strength non-woven FABRICS specimens ASPECT ratio failure mechanical model GEOTEXTILE contractION factor
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New Necessary Conditions for a Fixed-Point of Maps in Non-Metric Spaces
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作者 Ivan Raykov 《Advances in Pure Mathematics》 2022年第10期561-564,共4页
Our purpose is to introduce new necessary conditions for a fixed point of maps on non-metric spaces. We use a contraction map on a metric topological space and a lately published definition of limit of a function betw... Our purpose is to introduce new necessary conditions for a fixed point of maps on non-metric spaces. We use a contraction map on a metric topological space and a lately published definition of limit of a function between the metric topological space and the non-metric topological space. Then we show that we can create a function h on the non-metric space Y, h :Y →Y and present necessary conditions for a fixed point of this map on this map on Y. Therefore, this gives an opportunity to take a best conclusion in some sense, when non-metrizable matter is under consideration. 展开更多
关键词 Topological Space Compact Metric Space Fixed Point contraction Map non-Metric Space
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MiR-16-5p plays an inhibitory role in human non-small cell lung cancer through Fermitin family member 2
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作者 JUNQI GUO YUN YANG +6 位作者 WEI ZHAO ZHONGHAI YAN XIA YANG YUNFEI YAN RUIMIN HAO JINXIA HU FEI JIAO 《BIOCELL》 SCIE 2021年第3期627-638,共12页
Increasing evidence indicates that aberrant expressions of some microRNAs are associated with cancer progression.However,the roles and biological mechanisms of miRNA-16-5p in human non-small cell lung cancer(NSCLC)are... Increasing evidence indicates that aberrant expressions of some microRNAs are associated with cancer progression.However,the roles and biological mechanisms of miRNA-16-5p in human non-small cell lung cancer(NSCLC)are not to be well studied.Here,we validated that the expression of miR-16-5p was decreased significantly in NSCLC samples and cell lines.The correlation between the clinicopathological features of NSCLC and the miR-16-5p expression showed that the expression of miR-16-5p in non-small cell lung cancer was linked with the advanced TNM stage,positive lymph node metastasis,with short overall survival(OS).Also,a negative correlation between miR-16-5p and Fermitin family member 2(FERMT2)was observed,implying there may be a potential link about their regulation.The hypothesis was further confirmed by in-silico analysis and dual-luciferase reporter assay.Moreover,we demonstrated that the transfections of miR-16-5p mimics could alter some biological characteristics of NSCLC cells remarkably accomplished by the expression variance of FERMT2 in vitro and in vivo assays.Summarily,this study demonstrated that miR-16-5p,as a tumor suppression factor in NSCLC by targeting FERMT2,could serve as one promising biomarker in the prediction for NSCLC patients. 展开更多
关键词 miR-16-5p non–small-cell lung cancer(NSCLC) Fermitin family member 2(FERMT2) APOPTOSIS INVASION Overall survival(OS)
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间断递增负荷条件下肌肉活动的力-电关系 被引量:10
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作者 宋超 王健 方红光 《体育科学》 CSSCI 北大核心 2006年第3期50-52,共3页
目的:探讨非疲劳状态下肱二头肌在静态间断性递增负荷下sEMG信号的线性和非线性指标变化规律;方法:记录19名被试肱二头肌在10%、20%、40%、60%、80%MVC负荷水平下sEMG信号,分析线性时、频指标AEMG、MPF、MF和非线性指标C(N)、DET%的变... 目的:探讨非疲劳状态下肱二头肌在静态间断性递增负荷下sEMG信号的线性和非线性指标变化规律;方法:记录19名被试肱二头肌在10%、20%、40%、60%、80%MVC负荷水平下sEMG信号,分析线性时、频指标AEMG、MPF、MF和非线性指标C(N)、DET%的变化规律;研究结果:在负荷水平从10%上升到80%MVC过程中,线性分析指标AEMG、MPF和MF均呈单调递增性改变。非线性分析指标DET%呈单调递减性改变,C(N)基本保持稳定;结论:以上sEMG信号变化的原因可能与递增负荷运动过程中型肌纤维募集比例和数量的增加有关。 展开更多
关键词 非疲劳状态 肱二头肌 间断递增负荷 SEMG
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n-Banach空间中压缩映射与非扩张映射下的不动点(英文) 被引量:6
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作者 樊增平 苏雅拉图 《内蒙古师范大学学报(自然科学汉文版)》 CAS 2010年第4期351-355,共5页
在n-赋范空间中引进非扩张映射、压缩映射以及序列紧集等概念.首先,证明了n-Banach空间中压缩映射下的两个不动点定理;其次,讨论了非扩张映射满足一定条件时,不动点的存在性问题与不动点集的一个结构;最后,通过非扩张映射定义了另外一... 在n-赋范空间中引进非扩张映射、压缩映射以及序列紧集等概念.首先,证明了n-Banach空间中压缩映射下的两个不动点定理;其次,讨论了非扩张映射满足一定条件时,不动点的存在性问题与不动点集的一个结构;最后,通过非扩张映射定义了另外一族映射,并讨论了它的不动点集结构. 展开更多
关键词 扩张映射 压缩映射 n-Banach空间 序列紧集
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N.A.Menger PM-空间中非单调压缩算子方程组解的连续性及其应用 被引量:2
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作者 陈汝栋 王长庆 《辽宁师范大学学报(自然科学版)》 CAS 1992年第2期94-100,共7页
在引入非单调压缩函数的前提下,在非阿基米德概率度量空间中,讨论了一类非单调压缩算子方程组解的存在性、唯一性及关于参数的连续性.作为应用,讨论了一类乘积空间中映像对的不动点的存在性.
关键词 N.A.Menger PM-空间 不动点 非单调压缩算子
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连续递增负荷条件下肌肉活动的力-电关系 被引量:4
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作者 宋超 王健 楼兰萍 《中国应用生理学杂志》 CAS CSCD 北大核心 2010年第1期97-101,共5页
目的:观察非疲劳状态下肱二头肌在静态连续递增负荷下sEMG信号的线性和非线性指标变化规律,探讨非疲劳状态下肌肉活动的力-电关系。方法:记录11名男性受试者肱二头肌在完成为时5s连续递增负荷等长收缩过程中的sEMG信号,观察线性分析指标... 目的:观察非疲劳状态下肱二头肌在静态连续递增负荷下sEMG信号的线性和非线性指标变化规律,探讨非疲劳状态下肌肉活动的力-电关系。方法:记录11名男性受试者肱二头肌在完成为时5s连续递增负荷等长收缩过程中的sEMG信号,观察线性分析指标AEMG、MPF、MF与非线性分析指标C(N)和DET%的变化规律。结果:AEMG由第1s的112.14μV逐渐上升到第5s的1277.18μV,与负荷水平呈明显线性相关;DET%从第1s的74.95下降到第5s的46.78,呈单调递减变化;MPF、MF和C(N)在本试验条件下未发生明显改变。结论:在连续递增收缩过程中,线性分析指标AEMG呈线性递增性变化,而MPF和MF无显著改变;非线性分析指标DET%随用力程度的连续递增而递减,而C(N)则保持相对稳定。 展开更多
关键词 -电关系 连续递增负荷 肱二头肌 非疲劳收缩
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“准合同”概念之外延考--对我国《民法典》第985条的理论与实证分析 被引量:3
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作者 李永军 《政治与法律》 CSSCI 北大核心 2022年第5期80-95,共16页
在我国《民法典》中,准合同被规定在合同编中,但是,如果说无因管理与合同还有某些关联,不当得利就距离合同太远了。无因管理在我国《民法典》上从“没有义务”的视角来定义存在巨大的漏洞,以“无委托合同而有代理权”的情况下所谓的行... 在我国《民法典》中,准合同被规定在合同编中,但是,如果说无因管理与合同还有某些关联,不当得利就距离合同太远了。无因管理在我国《民法典》上从“没有义务”的视角来定义存在巨大的漏洞,以“无委托合同而有代理权”的情况下所谓的行为不构成无因管理,就可以击穿这一概念。因此应当如大部分国家民法典那样从“无权限”的角度来界定更合适。在法国法上不当得利被严格区别于“非债清偿”,这与德国法上区分“给付型”与“非给付型”不当得利,在效果上几乎一致。我国民法典上仅仅用“没有法律根据取得不当利益”来界定不当得利,造成与民法体系中的其他请求权难以区分,不利于民法体系的精确性与规范正确使用。应当在制定法律解释时,像我国学理通说主张的那样,区分类型。这不仅是制度构建的需要,而且是法律规范适用的需要。 展开更多
关键词 准合同 无因管理 不当得利 请求权基础 合同 非债清偿
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非压缩动力系统及其Perron-Frobenius算子 被引量:1
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作者 叶远灵 《华南师范大学学报(自然科学版)》 CAS 2005年第3期100-107,共8页
讨论了一维非压缩动力系统以及由其所定义的Perron-Frobenius算子.给出了所论算子具有Perron-Frobenius性质的一个充分条件.
关键词 Perron-Frobenius算子 非压缩动力系统 Dini连续 函数迭代系统 PERRON-FROBENIUS性质
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Hilbert空间中κ-严格伪压缩的强收敛定理(英文) 被引量:1
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作者 杨莉 《电子科技大学学报》 EI CAS CSCD 北大核心 2009年第4期546-548,563,共4页
在无穷维Hilbert空间中,即使对非扩张映像Mann,迭代算法仅有弱收敛。为了得到强收敛定理,该文利用Hilbert空间中闭凸子集的一个序列和一个给定向量作适当的凸组合修改Mann迭代算法,在Hilbert空间中给出了一个新的κ-严格伪压缩修正的Man... 在无穷维Hilbert空间中,即使对非扩张映像Mann,迭代算法仅有弱收敛。为了得到强收敛定理,该文利用Hilbert空间中闭凸子集的一个序列和一个给定向量作适当的凸组合修改Mann迭代算法,在Hilbert空间中给出了一个新的κ-严格伪压缩修正的Mann迭代算法——似Ishikawa迭代算法,并且建立了该算法的强收敛定理。推广和改进了一些最新的结果。 展开更多
关键词 收敛定理 迭代算法 距离投影 非扩张映像 κ-严格伪压缩
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长期雇佣的经济解释--解读《劳动合同法》中的无固定期限劳动合同
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作者 孙杰 黄金芳 《贵州财经学院学报》 CSSCI 2008年第4期97-100,共4页
经济理论表明长期雇佣是维持和谐、稳定劳动关系的重要条件。在长期雇佣条件下雇佣双方通常会理性地选择对双方都有激励和约束作用的报酬后置的支付模式,但考虑到这种支付模式是双方的隐性协议以及我国劳动力市场中雇佣双方力量悬殊的... 经济理论表明长期雇佣是维持和谐、稳定劳动关系的重要条件。在长期雇佣条件下雇佣双方通常会理性地选择对双方都有激励和约束作用的报酬后置的支付模式,但考虑到这种支付模式是双方的隐性协议以及我国劳动力市场中雇佣双方力量悬殊的现实情况,不可避免地会出现用人单位单方面发生道德风险的可能性,而《劳动合同法》中无固定期限劳动合同的出台有效地保护了劳动者尤其是资深劳动者的合法权益。 展开更多
关键词 长期雇佣 劳动合同法 无固定期限劳动合同
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非压缩动力系统的Perron-Frobenius算子具有PF性质的几个充分条件
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作者 刘卉 《嘉应学院学报》 2008年第3期26-28,共3页
讨论了n维非压缩动力系统及其所定义的Perron-Frobenius算子。通过建立n维非压缩动力系统的PF算子与非膨胀函数迭代系统的Ruelle算子之间的联系,给出了所论算子具有Perron-Frobe-nius性质的几个充分条件。
关键词 非压缩动力系统 函数迭代系统 Dini连续 Perron—Frobenius算子 Perron—Frobenius性质
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