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Search Results: 1 - 10 of 51679 matches for " JIN Yi "
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Research on the Relationship between Industrial Structure Evolution and Industry Income Gap in Hong Kong  [PDF]
Yi Jin
Modern Economy (ME) , 2018, DOI: 10.4236/me.2018.94044
Abstract: The widening industry income gap in Hong Kong has seriously hindered the balanced development of industry and sustained and healthy economic growth. Therefore, it is of great significance to explore the influence mechanism of industrial structure evolution on industry income gap and the relationship between them. This paper takes Hong Kong’s industrial structure evolution and industry income gap as the research object, and comprehensively uses statistical data and census data to analyze in detail the causal relationship between industrial structure evolution and industry income gap. Starting with the evolution of Hong Kong’s industrial structure, this paper follows the idea that the industrial structure determines the employment structure and thus affects the change of the industry income gap. Then we use agent variables which describe the nature of industrial structure evolution and industry income gap to conduct causality analysis and regression analysis to find the dynamic and quantitative relationship between them.
Improving Subwavelength Resolution of Multilayered Structures Containing Negative-Permittivity Layers by Flatting the Transmission Curves
Yi Jin
PIER , 2010, DOI: 10.2528/PIER10051309
Abstract: Multilayered structures consisting of alternating negative-permittivity and dielectric layers are explored to obtain high-resolution imaging of subwavelength objects. The peaks with the smallest || ( is the transverse wave vector) on the transmission curves, which come from the guided modes of the multilayered structures, can not be completely damped by material loss. This makes the amplitudes of the evanescent waves around these peaks inappropriate after transmitted through the imaging structures, and the imaging quality is not good. To solve such a problem, the permittivity of the dielectric layers is appropriately chosen to make these sharp peaks merge with their neighboring peaks, whose corresponding guiding modes in the multilayered structure are cutoff. Wide flat upheavals are then generated on the transmission curves so that evanescent waves in a large range are transmitted through the structures with appropriate amplitudes. In addition, it is found that the sharp peaks with the smallest || can be eliminated by adding appropriate coating layers and wide flat upheavals can also be obtained.
Editorial on research topic: aldo-keto reductases and role in human disease
Yi Jin
Frontiers in Pharmacology , 2013, DOI: 10.3389/fphar.2013.00065
Abstract:
The Dynamics of Developmental and Tumor Angiogenesis—A Comparison
Yi Jin,Lars Jakobsson
Cancers , 2012, DOI: 10.3390/cancers4020400
Abstract: The blood vasculature in cancers has been the subject of intense interest during the past four decades. Since the original ideas of targeting angiogenesis to treat cancer were proposed in the 1970s, it has become evident that more knowledge about the role of vessels in tumor biology is needed to fully take advantage of such strategies. The vasculature serves the surrounding tissue in a multitude of ways that all must be taken into consideration in therapeutic manipulation. Aspects of delivery of conventional cytostatic drugs, induction of hypoxia affecting treatment by radiotherapy, changes in tumor cell metabolism, vascular leak and trafficking of leukocytes are affected by interventions on vascular function. Many tumors constitute a highly interchangeable milieu undergoing proliferation, apoptosis, and necrosis with abundance of growth factors, enzymes and metabolites. These aspects are reflected by the abnormal tortuous, leaky vascular bed with detached mural cells (pericytes). The vascular bed of tumors is known to be unstable and undergoing remodeling, but it is not until recently that this has been dynamically demonstrated at high resolution, facilitated by technical advances in intravital microscopy. In this review we discuss developmental genetic loss-of-function experiments in the light of tumor angiogenesis. We find this a valid comparison since many studies phenocopy the vasculature in development and tumors.
MicroRNA in cell differentiation and development
Yi Shi,YouXin Jin
Science China Life Sciences , 2009, DOI: 10.1007/s11427-009-0040-5
Abstract: The regulation of gene expression by microRNAs (miRNAs) is a recently discovered pattern of gene regulation in animals and plants. MiRNAs have been implicated in various aspects of animal development and cell differentiation, such as early embryonic development, neuronal development, muscle development, and lymphocyte development, by the analysis of genetic deletions of individual miRNAs in mammals. These studies show that miRNAs are key regulators in animal development and are potential causes of human diseases. Here we review some recent discoveries about the functions of miRNAs in cell differentiation and development.
A simple approach to describe hadron production rates in $e^+ e^-$ annihilation
Yi-Jin Pei
Physics , 1996, DOI: 10.1007/s002880050221
Abstract: We show that, based on the idea of string fragmentation, the production rates of light flavored mesons and baryons originating from fragmentation can be described by the spin, the binding energy of the particle, and a strangeness suppression factor. Apart from a normalization factor, $e^+ e^-$ data at different center-of-mass energies can be described simultaneously. Applying to the heavy flavor production, we find that our predictions are in good agreement with data.
High-subwavelength-resolution imaging of multilayered structures consisting of alternating negative-permittivty and dielectric layers with flattened transmission curves
Yi Jin,Sailing He
Physics , 2008,
Abstract: Multilayered structures consisting of alternating negative-permittivity and dielectric layers are explored to obtain high-resolution imaging of subwavelength objects. The peaks with the smallest |ky| (ky is the transverse wave vector) on the transmission curves, which come from the guided modes of the multilayered structures, can not be completely damped by material loss. This makes the amplitudes of the evanescent waves around these peaks inappropriate after transmitted through the imaging structures, and the imaging quality is not good. To solve such a problem, the permittivity of the dielectric layers is appropriately chosen to make these sharp peaks merge with their neighboring peaks. Wide flat upheavals are then generated on the transmission curves so that evanescent waves in a large range are transmitted through the structures with appropriate amplitudes. In addition, it is found that the sharp peaks with the smallest |ky| can be eliminated by adding appropriate coating layers and wide flat upheavals can also be obtained.
Enhanced transmission of transverse electric waves through subwavelength slits in a thin metallic film
Yuqian Ye,Yi Jin
Physics , 2009, DOI: 10.1103/PhysRevE.80.036606
Abstract: y coating a cover layer with metallization of cut wire array, the transmission of transverse electric waves (TE; the electric field is parallel to the slits) through subwavelength slits in a thin metallic film is significantly enhanced. An 800-fold enhanced transmission is obtained compared to the case without the cut wires. It is demonstrated that a TE incident wave is highly confined by the cut wires due to the excitation of the electric dipole-like resonance, and then effectively squeezed into and through the subwavelength slits.
A simple approach to describe hadron production rates in inelastic pp and p$\bar{p}$ collisions
Yi-Jin Pei
Physics , 1997,
Abstract: We show that the production rates of light-flavoured mesons and baryons in inelastic pp and p$\bar{p}$ collisions can be described by a simple approach used to describe data obtained in $e^{+}e^{-}$ annihilation. Based on the idea of string fragmentation, the approach describes the production rates of light-flavoured mesons and baryons originating from fragmentation in terms of the spin, the binding energy of the particle, and a strangeness suppression factor. Apart from a normalization factor and the additional sea quark contribution in inelastic pp and p$\bar{p}$ collisions, pp, p$\bar{p}$ and $e^{+}e^{-}$ data at various centre-of-mass energies are described simultaneously.
Color and Kinematic Interference Influence on the Probability of Color Singlet Chain States
Yi Jin,Qubing Xie
Physics , 2001,
Abstract: In popular event generators of high energy reaction, the large Nc, the number of color approximation is implied, which reduces the possible interference effects, and the probability of color singlet chain reaches to about 100%. In $Nc=3$ real world, we show that not only the color interference decreases this probability to 83%, 77%, 72%, $...$, respectively to $n=2$, 3, 4, $...$, {in the process of}$e^+e^-{\longrightarrow}q\bar {q}+ng$ final state, but also the accompanying kinematic interference exists, which decreases this probability to about 67%, 58%, $...$, further. In the meanwhile, we fin d that the kinematic interference makes the probability of color separate singlet states increases synchronously. Combing and analyzing above facts, we infer that the probability of color singlet chain states in high energy ${e^+e^-}{\longrightarrow}{h's}$ reaction would be much smaller than 100%, which is commonly accepted. And the fraction of other color connec tion states, $e.g.$, color separate singlet states should be significant.
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