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Is there an inverted U-shaped curve?Empirical analysis of the Environmental Kuznets Curve in agrochemicals

Fei LI,Suocheng DONG,Fujia LI,Libiao YANG

Frontiers of Environmental Science & Engineering 2016, Volume 10, Issue 2,   Pages 276-287 doi: 10.1007/s11783-014-0700-y

Abstract: cointegration, and panel-based dynamic ordinary least squares to investigate the Environmental Kuznets CurveThis relationship takes on the inverted U-shaped Environmental Kuznets Curve, and the value of the turning

Keywords: Environmental Kuznets Curve     agrochemical     China    

Analytical solutions of three-dimensional contaminant transport in uniform flow field in porous media: A library

Hongtao WANG, Huayong WU

Frontiers of Environmental Science & Engineering 2009, Volume 3, Issue 1,   Pages 112-128 doi: 10.1007/s11783-008-0067-z

Abstract: The purpose of this study is to present a library of analytical solutions for the three-dimensional contaminant transport in uniform flow field in porous media with the first-order decay, linear sorption, and zero-order production. The library is constructed using Green's function method (GFM) in combination with available solutions. The library covers a wide range of solutions for various conditions. The aquifer can be vertically finite, semi-infinitive or infinitive, and laterally semi-infinitive or infinitive. The geometry of the sources can be of point, line, plane or volumetric body; and the source release can be continuous, instantaneous, or by following a given function over time. Dimensionless forms of the solutions are also proposed. A computer code FlowCAS is developed to calculate the solutions. Calculated results demonstrate the correctness of the presented solutions. The library is widely applicable to solve contaminant transport problems of one- or multiple- dimensions in uniform flow fields.

Keywords: solution library     contaminant transport     analytical solution     dispersion and advection     porous media     typecurve     Green's function method (GFM)    

Learning curve of totally thoracoscopic pulmonary segmentectomy

Weibing Wu, Jing Xu, Wei Wen, Yue Yu, Xinfeng Xu, Quan Zhu, Liang Chen

Frontiers of Medicine 2018, Volume 12, Issue 5,   Pages 586-592 doi: 10.1007/s11684-017-0566-z

Abstract: However, data describing the learning curve of TTPS have yet to be obtained.TTPS between September 2010 and December 2013 were retrospectively analyzed to evaluate the learning curveCUSUMOT indicated that the learning curve of TTPS should be more than 72 cases.

Keywords: thoracoscopic     segmentectomy     learning curve     CUSUM    

Numerical investigation of circle defining curve for two-dimensional problem with general boundaries

Chung Nguyen VAN

Frontiers of Structural and Civil Engineering 2019, Volume 13, Issue 1,   Pages 92-102 doi: 10.1007/s11709-018-0472-8

Abstract: problem, boundary value problems domain with the domain completely described by a circular defining curveinvestigates the possibility of using exact geometry to form the exact description of the circular defining curveand the standard finite element shape function to approximate the defining curve.performance is found to be better than using standard linear element for the approximation defining curve

Keywords: exact geometry     circular defining curve     general boundaries     SBFEM    

New practice in semaglutide on type-2 diabetes and obesity: clinical evidence and expectation

Frontiers of Medicine 2022, Volume 16, Issue 1,   Pages 17-24 doi: 10.1007/s11684-021-0873-2

Abstract: Obesity is an important risk factor of type 2 diabetes (T2D), which has become an important factor threatening

Keywords: semaglutide     type 2 diabetes     obesity    

Learning Curve and Its Application in Production Operation al Research

Chen Zhixiang

Strategic Study of CAE 2007, Volume 9, Issue 7,   Pages 82-88

Abstract:

Learning curve is one character function that improves output by theLearning curve can be used to establish scientific cost plan, improve shop flow scheduling, labor quotaThis paper reviews the research literatures, introduces different forms of learning curve, analyzes theircharacters, and discusses the future directions of application of learning curve.

Keywords: learning curve     operational management     behaviors research    

Research on physical shape preserving curve reconstruction

TANG Kelun, ZHANG Xiangwei, CHENG Siyuan, XIONG Hanwei, ZHANG Hong

Frontiers of Mechanical Engineering 2007, Volume 2, Issue 3,   Pages 305-309 doi: 10.1007/s11465-007-0054-2

Abstract: A method of physical shape preserving curve reconstruction is proposed to better realize the data fusionFrom the principle of materials mechanics, the strain energy of the curve corresponding to the distortionis advanced as the internal energy, and the elastic potential energy of the curve is established, usingNumerical simulation indicates that there is an extremely good agreement between the new fitted curveand the actual curve.

Keywords: information     CMM     Numerical simulation     effective     coordinate measuring    

Interpolation of a spline developable surface between a curve and two rulings

Alicia CANTÓN,Leonardo FERNÁNDEZ-JAMBRINA

Frontiers of Information Technology & Electronic Engineering 2015, Volume 16, Issue 3,   Pages 173-190 doi: 10.1631/FITEE.14a0210

Abstract: paper we address the problem of interpolating a spline developable patch bounded by a given spline curveTo complete the boundary of the patch, a second spline curve is to be given.

Keywords: Developable surfaces     Spline surfaces     Blossoms    

Principle and curve of planetary indexing cam mechanisms

LIU Ming-tao, ZHANG Ce, YANG Yu-hu

Frontiers of Mechanical Engineering 2006, Volume 1, Issue 4,   Pages 475-478 doi: 10.1007/s11465-006-0063-6

Abstract: A new type of planetary indexing cam mechanism called type !c is presented.The transmission principle of type !c is discussed.Based on the principle of formation of conjugate tooth contour, the equations of the cam s pitch curveThe continuity and symmetry of the cam s pitch curve are also analyzed.dead point and its phase angle is equal to (π - 2π/n); 3) The continuous condition of the cam s pitch curve

Keywords: continuity     planetary     average transmission     symmetry     intermittent    

Personalized medicine of type 2 diabetes

Weiping Jia

Frontiers of Medicine 2013, Volume 7, Issue 1,   Pages 1-3 doi: 10.1007/s11684-013-0241-y

Detection of void and metallic inclusion in 2D piezoelectric cantilever beam using impedance measurements

S. SAMANTA, S. S. NANTHAKUMAR, R. K. ANNABATTULA, X. ZHUANG

Frontiers of Structural and Civil Engineering 2019, Volume 13, Issue 3,   Pages 542-556 doi: 10.1007/s11709-018-0496-0

Abstract: current work is to improve the existing inverse methodology of void-detection based on a target impedance curveIn this work, mode-shape dependent shifting phenomenon of peaks of impedance curve with change in voiditeration starting from each initial guess, the difference between the computationally obtained impedance curveand the target impedance curve has been reduced.

Keywords: piezoelectricity     impedance curve     mode shapes     inverse problem     flaw detection     curve shifting    

Immunological and virological characteristics of human immunodeficiency virus type 1 superinfection:

Yang Gao, Wen Tian, Xiaoxu Han, Feng Gao

Frontiers of Medicine 2017, Volume 11, Issue 4,   Pages 480-489 doi: 10.1007/s11684-017-0594-8

Abstract:

Superinfection is frequently detected among individuals infected by human immunodeficiency virus type

Keywords: human immunodeficiency virus type I     superinfection     incidence     immune response    

Metabolomics in human type 2 diabetes research

Jingyi Lu, Guoxiang Xie, Weiping Jia, Wei Jia

Frontiers of Medicine 2013, Volume 7, Issue 1,   Pages 4-13 doi: 10.1007/s11684-013-0248-4

Abstract: current findings of metabolomic studies in human investigations with the most common form of diabetes, type

Keywords: metabolomics     type 2 diabetes     metabolic pathway     mass spectrometry     nuclear magnetic resonance (NMR)    

Modeling and Real-time Performance Analysis of Switched Ethernet by Network Calculus

Wang Xiaoxin,Liu Luyuan,Liu Jing,Ma Jinjue

Strategic Study of CAE 2006, Volume 8, Issue 6,   Pages 55-59

Abstract: proposed, in which the data flow is divided into real-time flow and non-real-time flow and the arrival curve, service curve, the max delay and max storage needed are got.

Keywords: network calculus     switch     arrival curve     service curve     delay    

Correction to: Effect of wood dust type on mechanical properties, wear behavior, biodegradability, and

Frontiers of Structural and Civil Engineering 2021, Volume 15, Issue 4,   Pages 1071-1071 doi: 10.1007/s11709-021-0736-6

Title Author Date Type Operation

Is there an inverted U-shaped curve?Empirical analysis of the Environmental Kuznets Curve in agrochemicals

Fei LI,Suocheng DONG,Fujia LI,Libiao YANG

Journal Article

Analytical solutions of three-dimensional contaminant transport in uniform flow field in porous media: A library

Hongtao WANG, Huayong WU

Journal Article

Learning curve of totally thoracoscopic pulmonary segmentectomy

Weibing Wu, Jing Xu, Wei Wen, Yue Yu, Xinfeng Xu, Quan Zhu, Liang Chen

Journal Article

Numerical investigation of circle defining curve for two-dimensional problem with general boundaries

Chung Nguyen VAN

Journal Article

New practice in semaglutide on type-2 diabetes and obesity: clinical evidence and expectation

Journal Article

Learning Curve and Its Application in Production Operation al Research

Chen Zhixiang

Journal Article

Research on physical shape preserving curve reconstruction

TANG Kelun, ZHANG Xiangwei, CHENG Siyuan, XIONG Hanwei, ZHANG Hong

Journal Article

Interpolation of a spline developable surface between a curve and two rulings

Alicia CANTÓN,Leonardo FERNÁNDEZ-JAMBRINA

Journal Article

Principle and curve of planetary indexing cam mechanisms

LIU Ming-tao, ZHANG Ce, YANG Yu-hu

Journal Article

Personalized medicine of type 2 diabetes

Weiping Jia

Journal Article

Detection of void and metallic inclusion in 2D piezoelectric cantilever beam using impedance measurements

S. SAMANTA, S. S. NANTHAKUMAR, R. K. ANNABATTULA, X. ZHUANG

Journal Article

Immunological and virological characteristics of human immunodeficiency virus type 1 superinfection:

Yang Gao, Wen Tian, Xiaoxu Han, Feng Gao

Journal Article

Metabolomics in human type 2 diabetes research

Jingyi Lu, Guoxiang Xie, Weiping Jia, Wei Jia

Journal Article

Modeling and Real-time Performance Analysis of Switched Ethernet by Network Calculus

Wang Xiaoxin,Liu Luyuan,Liu Jing,Ma Jinjue

Journal Article

Correction to: Effect of wood dust type on mechanical properties, wear behavior, biodegradability, and

Journal Article