Wyniki wyszukiwania - Biblioteka Nauki

1

Review of the Cross-strait Information Industry Cooperation Research

100%

Li Y.

Przegląd Elektrotechniczny

|

2012

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tom R. 88, nr 5b

68-71

EN

This paper reviews the results of the Cross-strait information industry cooperation research recently, and gives commands on some of the major achievements, with advice on the advantages and disadvantages of both sides. This paper gives purpose to attract more valuable comments for promoting the level of research on the Cross-strait information cooperation research, and offers advice to strengthen the cooperation.

PL

Przedstawiono możliwości przemysłu wykorzystującego techniki informacyjne typu cross-strait. Przedstawiono możliwości zastosowania tych technik w kooperacji przemysłowej.

2

Ishikawa iterative sequence with errors for k-subaccetive operators in arbitrary Banach spaces

100%

Li Y.

Demonstratio Mathematica

|

2006

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tom Vol. 39, nr 1

161-168

EN

In this paper, the iterative solution is studied for equation x+Tx =f with a Lipschitz K-subaccetive operator in arbitrary Banach spaces, some previously results are generalized.

3

Synthesis and Magnetic Properties of Binuclear Lanthanide(III) Complexes Bridged by mi-2-Chloroterephthalato Groups

100%

Li Y.

Polish Journal of Chemistry

|

2001

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tom Vol. 75, nr 9

1195-1202

EN

Ten new binuclear lanthanide(III) complexes described by the overall formula [Ln2(CTPHA)(Mephen)4(ClO4)2](ClO4)2 (Ln = La, Ce, Nd, Sm, Eu, Gd, Tb, Dy, Ho, Er), where Mephen stands for 5-methyl-1,10-phenanthroline, and CTPHA represents the 2-chloroterephthalate dianions, have been synthesized and characterized by elemental analyses, molar conductance measurements, IR, ESR and electronic spectra. It is proposed that these complexes present CTPHA-bridged structures consisting of two lanthanide( III) ions. The [Gd2(CTPHA)(Mephen)4(ClO4)2](ClO4)2 complex has been further characterized by variable-temperature magnetic susceptibilities (4~300 K), demonstrating a very weak antiferromagnetic spin-exchange interaction between Gd(III)-Gd(III) ions within the complex. Based on the spin Hamiltonian operator, _ _ _ H = 2JS S 1 2 _ _ , the exchange parameter (J) was evaluated as -0.16 cm-1.

4

Evaluation of irrigation-drainage scheme under water level regulation based on TOPSIS in Southern China

71%

Li Y. , Xiao M. , Zhu G. , Li Y.

Polish Journal of Environmental Studies

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2021

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tom 30

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nr 1

5

Improved dolphin swarm optimization algorithm based on information entropy

63%

Li Y. , Wang X.

Bulletin of the Polish Academy of Sciences. Technical Sciences

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2019

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tom Vol. 67, nr 4

679--685

EN

In order to overcome the shortcomings of the dolphin algorithm, which is prone to falling into local optimum and premature conver-gence, an improved dolphin swarm algorithm, based on the standard dolphin algorithm, was proposed. As a measure of uncertainty, information entropy was used to measure the search stage in the dolphin swarm algorithm. Adaptive step size parameters and dynamic balance factors were introduced to correlate the search step size with the number of iterations and fitness, and to perform adaptive adjustment of the algorithm. Simulation experiments show that, comparing with the basic algorithm and other algorithms, the improved dolphin swarm algorithm is feasible and effective.

6

Identification of heat-stable proteins in imbibed Cowpea (Vigna unguiculata) seeds

63%

Zhang Y. , Li Y.

Acta Physiologiae Plantarum

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2015

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tom 37

|

nr 02

EN

Heat-stable protein fraction in seeds is believed to enrich many proteins functioning in the acquisition of stress-tolerance of seeds. In this study, the composition of heat-stable protein fraction in imbibed cowpea (Vigna unguiculata) seeds was analyzed by SDS-PAGE and twodimensional gel electrophoresis coupled with mass spectrometry. The results indicated that approximately 12.4 % of seed soluble proteins were stable after heat treatment at 100 C for 10 min. Twenty-two putative heat-stable proteins were identified using MALDI-TOF/TOF MS. Most of these heat-stable proteins were late embryogenesis abundant proteins, and there were other stress-related proteins including Cu/Zn superoxide dismutase and 17.4 kDa Class I heat-shock protein. A cyclophilin protein, a cleavage and polyadenylation specificity factor and a Pumilio-family RNA binding protein were also present in the heat-stable fraction. The identified heat-stable proteins were more hydrophilic proteins and may accumulate to stabilize cellular components and maintain seed viability during seed development and germination.

7

Wastewater flocculation using a new hybrid copolymer: modeling and optimization by response surface methodology

63%

Dawood A. S. , Li Y.

Polish Journal of Environmental Studies

|

2014

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tom 23

|

nr 1

EN

A new hybrid inorganic-organic copolymer, aluminum chloride-poly(acrylamide-co-acrylic acid), was prepared using the free radical polymerization method and employed in this study. The hybrid copolymer was characterized by Fourier transform infrared spectroscopy (FTIR), scanning electron microscopy (SEM), and energy-dispersive x-ray spectroscopy (EDS). This hybrid copolymer was used in the flocculation of wastewater as a new flocculant. The design variables in the flocculation experiments were hybrid copolymer dosage and wastewater pH. The central composite design (CCD) for the response surface methodology (RSM) approach was used to develop a mathematical model and to optimize the parameters of the flocculation process in terms of optimal removal of chemical oxygen demand (COD), total suspended solids (TSS), and turbidity. After applying the analysis of variance (ANOVA) of all quadratic models, it was found that the obtained value of the correlation coefficient (R2) was more than 0.98 for all models. The optimum hybrid copolymer dosage was 125 mg/l and the optimum pH 7.55. Under these optimum values, the wastewater treatment achieved 97%, 98.6%, and 88.6% removal of turbidity, TSS, and COD, respectively.

8

Development of electricity trading strategies under neta using evolutionary algorithms and game theory

63%

Yin J. , Li Y.

Systems Science

|

2003

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tom Vol. 29, nr 3

139-151

EN

The energy crisis happening in California and problems emerging in other electricity power markets cross the world have led to more collusion and price tricks among energy companies and have motivated research into strategic gaming behaviors seen on power markets. Britain's power market trades physically and economically similar to that of California. Power generation companies in the U.K. make effort to attempt gaming strategies in trading. This paper explores a hybrid Game Theory and Evolutionary Computing method to study the possibility and impact of market manipulation in the U.K. power markets and hence to search for an optimal trading strategy for best profit.

9

Existence and uniqueness of anti-periodic solutions for a class of nonlinear n-th order functional differential equations

63%

Liu L. , Li Y.

Opuscula Mathematica

|

2011

|

tom Vol. 31, no. 1

61-74

10

Synthesis and Magnetic Studies of M-Iodanilato-Bridged Binuclear Oxovanadium(IV) Complexes

63%

Li Y. , Yan C.

Polish Journal of Chemistry

|

2000

|

tom Vol. 74, nr 8

1071-1077

11

Synthesis, Characterization and magnetic Properties of mi-2-Nitroterephthalato Binuclear Iron(II) Complexes

63%

Li Y. , Yan C. W.

Polish Journal of Chemistry

|

2002

|

tom Vol. 76 / nr 6

765-771

EN

Four new binuclear iron(II) complexes bridged by 2-nitroterephthalato groups (NTPHA) and ended with 4,4_-dimethyl-2,2_-bipyridine (Me2-bpy), 2,9-dimethyl-1,10-phenanthroline (Me2-phen), 5-chloro-1,10-phenanthroline (Cl-phen) or 5-bromo-1,10-phenanthroline (Br-phen), namely [Fe2(NTPHA)L4](ClO4)2 (L=Me2-bpy,Me2-phen, Cl-phen, Br-phen), have been synthesized and characterized. Based on elemental analyses, magnetic moments (at room temperature), molar conductance measurements, and spectroscopic studies, extended NTPHA-bridged structures consisting of two iron(II) ions, each in a distorted octahedral environment are proposed for these complexes. The variable temperature magnetic susceptibilities of complexes [Fe2(NTPHA)(Me2-bpy)4](ClO4)2 (1) and [Fe2(NTPHA)(Me2-phen)4](ClO4)2 (2) were measured over the range 4.2~300 K and the observed data were successfully simulated by the equation based on the spin Hamiltonian operator, _ _ _ H JS S _ _ _ 2 1 2, giving the exchange integrals J = -1.02 cm-1 for (1) and J = -1.96 cm-1 for (2). These results indicate the presence of a very weakly antiferromagnetic spin-exchange interaction between the iron(II) ions within each molecule. The influence of nitro substituent in the bridging ligand on magnetic interaction between the metal ions of this kind of complexes is also discussed.

12

Synthesis and Magnetic Studies of Binuclear Iron(II) Complexes Bridged by Tetracarboxylato Groups

63%

Li Y. , Yan C. W.

Polish Journal of Chemistry

|

2002

|

tom Vol. 76 / nr 12

1681-1687

EN

Four novel binuclear iron(II) complexes, namely [Fe2(PMTA)L4], where L denotes 4,4_-dimethyl-2,2_-bipyridine (Me2-bpy); 1,10-phenanthroline (phen); 5-chloro-1,10- phenanthroline (Cl-phen) or 5-bromo-1,10-phenanthroline (Br-phen), respectively, and PMTA stands for the tetraanion of pyromellitic acid, have been synthesized and characterized. Based on elemental analyses, magnetic moments at room-temperature and molar conductivity measurements, and spectroscopic (electronic and IR spectra) studies, extended PMTA-bridged structures consisting of two iron(II) ions, each in a distorted octahedral environment, are proposed for these complexes. The variable temperature magnetic susceptibilities (4_300 K) of the complexes [Fe2(PMTA)(Me2-bpy)4] (1) and [Fe2(PMTA)(phen)4] (2) were measured and the magnetic analysis was carried out by least-square method to the observed data with the susceptibility equation derived from the spin Hamiltonian operator, _ _ _ H 2JS S 1 2 _ _ _ , giving the exchange integrals J = _1.09 cm_1 for (1) and J = ___18 cm_1 for (2). The results indicate that there is a very weak antiferromagnetic spin-exchange interaction between the Fe(II) ions within each molecule.

13

Exploring carbon emissions in China’s electric power industry for low-carbon development: drivers, decoupling analysis and policy implications

63%

Li Y. , Wang Q.

Polish Journal of Environmental Studies

|

2019

|

tom 28

|

nr 5

EN

As an important single source to carbon emissions, China’s power industry should bear social responsibility for mitigating climate change. To explore what low-carbon development means for the industry, a novel approach that combines the extended multilevel LMDI model with Tapio algorithm was conducted to study the drivers of carbon emissions in the power industry and whether CO₂ emissions from power output is out of sync with economic development, covering the period from 1996 to 2016. Our results come to the following: 1. Carbon emissions from electricity output are characterized by increases and volatility, with an average annual growth rate of 7.05%. The carbon emission factor of electricity, facilitating to compute CO₂ data, shows a decline. 2. The positive driving factors are economic activity effect (169.53%), population scale effect (9.29%), fuel mix structure effect (0.41%), and electricity trade effect (1.05%); the negative driving factors are electricity intensity effect (-46.38%), power generation efficiency effect (-24.93%), and power generation structure effect (-8.97%). 3. Weak decoupling and expansive decoupling are the main status during the research period. The electricity intensity effect is the main force to promote the decoupling process. 4. The market-oriented reform in the power industry in 2003 has a significant effect. The generation-side competition mechanism successfully changes the historical developmental trend of the decoupling elastic index.

14

The prediction of hull gesture and flow around ship based on Taylor expansion boundary element method

63%

Gong J. , Li Y.

Polish Maritime Research

|

2019

|

tom 26

|

nr 2

EN

Based on the potential flow theory and traditional boundary element method (BEM), Taylor expansion boundary element method (TEBEM) is introduced in this paper for the prediction of the flow field around ship, as a result, hull gesture and pressure distribution on hull surface are obtained. By this method, dipole strength of every field point is expanded in Taylor expansion, so that approximately continuous hull and free surface boundary condition could be achieved. To close the new equation system, the boundary condition of tangent velocity in every control point is introduced. With the simultaneous solving of hull boundary condition and free surface condition, the disturbance velocity potential could be obtained. The present method is used to predict the flow field and hull gesture of Wigley parabolic hull, Series 60 and KVLCC2 models. To validate the numerical model for full form ship, the wave profile, the computed hull gesture and hull surface pressure of KVLCC2 model are compared with experimental results

15

Morphology and characterization of cockloft-like ZnO/morin hybrid

63%

Li Y. , Zou Y. L.

Materials Science Poland

|

2010

|

tom Vol. 28, No. 3

741--748

EN

Morin modified multilayer ZnO with a cockloft-like morphology was fabricated in alcohol solution, using hydrothermally synthesized ZnO nanodisks and morin as the precursors. The samples were characterized by field emission scanning electron microscopy, X-ray diffractometry, Fourier transform infrared spectroscopy and fluorescence spectroscopy. The results show that the cockloft-like ZnO hybrid, having hexangular morphology with the diameter of 1.5-2 žm and the thickness of ca. 1 žm, is composed of a multilayer flatform stacked by numerous ZnO nanodisks in its middle and a meshlike muffle made up of countless morin nanoparticles with the diameter of ca. 40 nm. The UV emission of the as-fabricated product is obviously attenuated by morin nanoparticles assembling on the surface of the ZnO nanodisks.

16

Oxidation of activated carbon fibre and its adsorption of amylase

63%

Li Y. , Hu S.

Materials Science Poland

|

2009

|

tom Vol. 27, No. 2

453--461

EN

Activated carbon fibre was oxidized by combustion of nitrocellulose and oxidation with nitric acid to introduce the nitrogen and oxygen groups on its surface. The pore structure and chemical groups were investigated by nitrogen adsorption and FTIR. The result showed that the pore structure and surface morphology were not much affected but amide and hydroxyl groups could be introduced after oxidation. The adsorption capacity of amylase was markedly increased, and the hydrolysis activity of starch was maintained after 3 runs.

17

A new nonlinear Lagrangian method for nonconvex semidefinite programming

63%

Li Y. , Zhang L.

Journal of Applied Analysis

|

2009

|

tom Vol. 15, nr 2

149-172

EN

We study convergence properties of a new nonlinear Lagrangian method for nonconvex semidefinite programming. The convergence analysis shows that this method converges locally when the penalty parameter is less than a threshold and the error bound of solution is proportional to the penalty parameter under the constraint nondegeneracy condition, the strict complementarity condition and the strong" second order sufficient conditions. The major tools used in the analysis include the second implicit function theorem and differentials of Lowner operators.

18

Numerical and experimental study on seakeeping performance of a high-speed trimaran with T-foil in head waves

63%

Li A. , Li Y.

Polish Maritime Research

|

2019

|

tom 26

|

nr 3

EN

The longitudinal motion characteristics of a slender trimaran equipped with and without a T-foil near the bow are investigated by experimental and numerical methods. Computational fluid dynamics ( CFD) method is used in this study. The seakeeping characteristics such as heave, pitch and vertical acceleration in head regular waves are analyzed in various wave conditions. Numerical simulations have been validated by comparisons with experimental tests. The influence of large wave amplitudes and size of T-foil on the longitudinal motion of trimaran are analyzed. The present systematic study demonstrates that the numerical results are in a reasonable agreement with the experimental data. The research implied that the longitudinal motion response values are greatly reduced with the use of T-foil

19

Influential factor analysis and projection of industrial CO2 emissions in China based on extreme learning machine improved by genetic algorithm

63%

Li Y. , Hu H.

Polish Journal of Environmental Studies

|

2020

|

tom 29

|

nr 3

20

Synthesis and Magnetism of mi-Oxamido-bridged Cu2 II Ln III -type Heterotrinuclear Complexes (Ln=Ce, Nd, Sm, Eu, Gd, Tb, Dy, Er)

63%

Li Y. , Yan C. W.

Polish Journal of Chemistry

|

2001

|

tom Vol. 75, nr 3

355-362

EN

Eight new Cu2 IILnIII-type (Ln = Ce, Nd, Sm, Eu, Gd, Tb, Dy, Er) heterotrinuclear complexes bridged by N,N_-bis(2-aminopropyl)oxamidocopper(II) [Cu(oxdn)], namely Cu2(oxdn)2Ln(NO3)3, have been synthesized and characterized by elemental analyses, molar conductivity measurements and spectroscopic (IR, UV, ESR) studies. Magnetic susceptibility measurements (4.2~300 K) and studies of Cu2(oxdn)2Gd(NO3)3 complex have revealed that the central gadolinium(III) and terminal copper(II) ions are ferromagnetically coupled with the exchange integral J(Cu-Gd) = +2.98 cm-1, while an antiferromagnetic coupling is detected between the terminal copper(II) metal ions with the exchange integral J(Cu Cu) ' _ = _0.75 cm-1, on the basis of the spin Hamiltonian operator [H 2J(S S S S ) 2J'(S S Cu1 Gd Cu2 Gd Cu1 Cu2