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Existence of Nondecreasing and Continuous Solutions of an Integral Equation with linear Modification of the Argument

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Acta Mathematica Sinica,English Series 2007年第9期23卷 1719-1728页

作者： J.CABAllERO B.lóPEZ K.SADARANGANI Departamento de Matemáticas Universidad de Las Palmas de Gran CanariaCampus de Tafira Baja35017 Las Palmas de Gran CanariaSpain

We use a technique associated with measures of noncompactness to prove the existence of nondecreasing solutions to an integral equation with linear modification of the argument in the space C[0, 1]. In the last thirty years there has been a great deal of work in the field of differential equations with a modified argument. A special class is represented by the differential equation with affine modification of the argument which can be delay differential equations or differential equations with linear modifications of the argument. In this case we study the following integral equation x（t） = a（t）＋（Tx）（t） ∫0^σ（t） u（t, s, x（s）, x（λs））ds 0 〈 λ 〈 1 which can be considered in connection with the following Cauchy problem x＇（t） = u（t, s, x（t）, x（λt））, t ∈ [0, 1], 0 〈 λ 〈 1 x（0） = u0.

关键词： measure of noncompactness fixed point theorem nondecreasing solutions

Effects of Paper Mill Sludge on Potassium, Sodium, Calcium, and Magnesium Concentrations in Different Soybean Cultivars

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Pedosphere 2005年第1期15卷 84-94页

作者： YANXiang-Kui K.W.CHANG H.l.XU NationalInstituteforAgro-EnvironmentalSciences Tsukuba-shi305-8506Japan／／GansuAgriculturalUniversityLanzhou730070China AgrochemistryDepartment ChungnamNationalUniversityKung-DongTaejon305-764Korea InternationalNatureFarmingResearchCenter 5632HataNagano390-1401（Japan）

A field experiment was conducted on a sandy loam soil at an Experimental Farm in Taejon, South Korea, to determine the effects of paper mill sludge compost application rates on K, Na, Ca and Mg concentrations of soybean (Glycine max (l.) Merr.) aboveground tissues and the genotypic effects on the concentrations of these elements. Sludge compost treatments of 0, 75, and 150 t ha-1 were applied to 30 diverse soybean cultivars. Concentrations of K, Na, Ca, and Mg in aboveground tissues harvested 69 days after …

关键词： calcium magnesium paper mill sludge potassium sodium soybean

Dynamic Event-Triggered Consensus Control for Input Constrained Multi-Agent Systems With a Designable Minimum Inter-Event Time

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Transport through a quantum dot coupled to two Majorana bound states

自动化学报（英文版） 2024年第3期

作者： Meilin li Yue long Tieshan li Hongjing liang C.l.Philip Chen

来源：博看期刊评论

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Frontiers of physics 2017年第4期12卷 131-141页

作者： Qi-Bo Zeng Shu Chen l. You Rong lu Department of Physics and State Key laboratory of low-Dimensional Quantum Physics Tsinghua University Beijing 100084 China Beijing National laboratory for Condensed Matter Physics Institute of Physics Chinese Academy of Sciences Beijing 100190 China Collaborative Innovation Center of Quantum Matter Beijing 100084 China

We investigate electron transport inside a ring system composed of a quantum dot （QD） coupled to two Majorana bound states confined at the ends of a one-dimensional topological superconductor nanowire. By tuning the magnetic flux threading through the ring, the model system we consider can be switched into states with or without zero-energy modes when the nanowire is in its topological phase. We find that the Fano profile in the conductance spectrum due to the interference between bound and continuum states exhibits markedly different features for these two different situations, which consequently can be used to detect the Majorana zero-energy mode. Most interestingly, as a periodic function of magnetic flux, the conductance shows 2π periodicity when the two Majorana bound states are nonoverlapping （as in an infinitely long nanowire） but displays 4π periodicity when the overlapping becomes nonzero （as in a finite length nanowire）. We map the model system into a QD-Kitaev ring in the Majorana fermion representation and affirm these different characteristics by checking the energy spectrum.

关键词： quantum dot Majorana bound states Fano profile QD Kitaev ring topologically trivial and nontrivial

Shennan Road and the modernization of Shenzhen architecture

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Frontiers of Architectural Research 2020年第2期9卷 437-449页

作者： Cong Sun Charlie Q.l.Xue Department of Architecture and Civil Engineering City University of Hong KongHong KongChina

Shenzhen exemplifies the rapid development of urban planning and construction in *** the last 40 years,many representative urban spaces and buildings have been built on Shennan Road,the city’s main eastewest thoroughfare,which has witnessed the formation of a multicenter structural layout and the miraculous expansion of the *** iconic buildings were designed by Hong Kong or foreign *** continuous development along Shennan Road not only symbolizes the fruits of the reform and opening up policies of Shenzhen and even China,but also reflects the modern architectural history in *** study uses historical research methods to review the changes in the urban fabric and the design trends,as seen in representative buildings along Shennan Road in different *** addition to the transition path of the city center,the unique role of streets and buildings in the development of the urban structure is analyzed,and other urban functions and symbolic meanings are *** work contributes to the history and theory of the modernization of contemporary Chinese architecture.

关键词： Shenzhen architecture Shennan road Contemporary Chinese architecture Foreign design Rapid urbanization

Resonant Effects of FPl and SPP for light Transmitting through Subwavelength Metallic Gratings

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Communications in Theoretical Physics 2011年第10期56卷 727-732页

作者：马佑桥周骏何苗 l.Petti P.Mormile Department of Physics Faculty of ScienceNingbo University Photonics Research Centre School of Electronic and Communications EngineeringDublin Institute of Technology Institute of Optoelectronic Materials & Technology South China Normal University Institute of Cybernetics of CNR Via Campi Flegrei 3480072-PozzuoliItaly

A new model is proposed to explain the physical mechanism of the extraordinary transmission enhancement in subwavelength metallic *** extraordinary transmission enhancement is described by the co-operation of Fabry-Perot-like(FPl) resonance and the surface plasmon polariton(SPP) *** rigorous coupled-wave analysis(RCWA) and the finite difference time domain(FDTD) method are employed to illustrate the model by calculating the transmission and the field distributions in the subwavelength metallic grating,*** the numerical calculations show that transmission enhancement is achieved when the coupling resonance of the incident light,the surface plasmon polariton mode and the Fabry-Perot-like mode is happened,which are in good agreement with the proposed model.

关键词： gratings subwavelength structures optics at surfaces surface plasmons

Iterative Factors Favoring Collaboration for Interorganizational Resilience:The Case of the Greater Montréal Transportation Infrastructure

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International Journal of Disaster Risk Science 2015年第1期6卷 75-86页

作者： Marie-Christine Therrien Stéphane Beauregard Anais Valiquette-l'Heureux National School of Public Administration(ENAP) University of Montréal

Between members of a network, interorganizational resilience is favored by effective collaboration and coordination during a crisis. The quality of that collaboration depends on various iterative factors present between these organizations before the occurrence of a *** find that these factors are iterative since collaboration factors follow a mutually reinforcing cycle: collaboration within a crisis management network is conditioned by a general agreement, which is in turn conditioned by the extent to which the institutions coordinate themselves prior to crisis. We evaluated the factors that promote collaboration between public and private organizations that manage the Greater Montréal transportation *** factors are based on adaptive management processes such as mutual agreements, common organizational culture, knowledge and financial resources, levers of power,regulations, and pressure. Crisis management coordination represents the ability to build and assess the effectiveness of common response plans to risks to which they are exposed. We show how these processes vary depending on the links between private and public organizations.

关键词： Adaptive management Collaborative management Interorganizational resilience Montréal Transportation infrastructure

Effects of Irradiance and Temperature on the Photosynthesis and Vegetative Propagation of Caulerpa serrulata

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Journal of Integrative Plant Biology 2009年第2期51卷 147-154页

作者： Demao li Guangce Wang limei Chen Fang lü Zonggen Shen Key laboratory of Experimental Marine Biology Institute of Oceanology the Chinese Academy of Sciences Qingdao 266071 China College of Marine Science and Engineering Tianjin University of Science and Technology Tianjin 300457 China Department of Food Science Institute of Agriculture Liaocheng University Liaocheng 252059 China Graduate School the Chinese Academy of Sciences BeijJng 100039 ChJna College of Biology and Food Science Changshu Institue of Technology Changshu 215500 China

The photosynthetic oxygen evolution of Caulerpa serrulata was determined with oxygen electrodes. The effects of light and temperature on the growth and regeneration of fragmented C. serrulata thalli were analyzed. The regenerating rate and establishment of different sizes and portions of C. serrulata were studied. The results showed that the light saturation point of C. serrulata was 200 μmol photons/m^2 per s and the optimum growth temperature was 25-30 ℃. Under these conditions, the maximum photosynthetic oxygen evolution rate was 15.1 ± 0.29 mg O2/mg Chl alh, the growth rate and elongation rate reached the highest values, 4.67 ±0.09 mg FW/d and 0.78± 0.01 mm/d, respectively. The fragmented C. serrulata thalli was regenerated at 20-35℃ and survived at 15℃ and 200 μmol photons/m^2 per s. A different survival rate was detected according to fragment size. All of these results indicated that C. serrulata was a candidate to become an invasive species if introduced into a new place. Therefore, we should pay more attention to C. serrulata for its potential threat to marine ecosystem when it is sold for aquarium use.

关键词： Caulerpa serrulata fragment regeneration invasive species photosynthesis.

Generalized Coherent States of a Particle in a Time-Dependent linear Potential

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Chinese Physics letters 2009年第7期26卷 36-39页

作者： l. Krache M. Maamache Y. Saadi A. Beniaiche lab PQSD Faculté des Sciences Université Ferhat Abbas de Sétif Sétif 19000 Algeria lab SPONl Faculté des Sciences de l'Ingénieur Université Ferhat Abbas de Sétif Sétif 19000 Algeria

We derive, with an invariant operator method and unitary transformation approach, that the Schr6dinger equation with a time-dependent linear potential possesses an infinite string of shape-preseving wave-packet states 1φ,λ （t） having classical motion. The qualitative properties of the invariant eigenvalue spectrum （discrete or continuous） are described separately for the different values of the frequency ω of a harmonic oscillator. It is also shown that, for a discrete eigenvalue spectrum, the states 1φ,λ （t） could be obtained from the coherent state 1φ,λ （t）.

关键词： Mathematical physics Quantum information and quantum mechanics