1,914 research outputs found
The existence of ground state solutions for semi-linear degenerate Schrödinger equations with steep potential well
In this article, we study the following degenerated Schrödinger equations: −∆γu + λV(x)u = f(x, u) in RN, u ∈ Eλ , where λ > 0 is a parameter, ∆γ is a degenerate elliptic operator, the potential V(x) has a potential well with bottom and the nonlinearity f(x, u) is either super-linear or sub-linear at infinity in u. The existence of ground state solution be obtained by using the variational methods
Thermal diffusion in fabrics and a graphics algorithm for apparel pattern reconstruction
This paper proposes a new apparel pattern-reconstruction method, which breaks sets of patterns into multiple parts according to special thermal characteristics in different parts of human body
An Empirical Study on the Determinants of Corporate Cash Holdings – Evidence from China
This study investigates the determinants of corporate cash holdings in Chinese market. After examining a panel data set obtained from 207 Chinese listed companies over the period 2004 to 2015, we find evidence that firms paying dividends prefer to accumulate more cash. At the same time, larger firms, firms with larger net working capital, firms with greater capital expenditures and firms with higher level of leverage tend to hold less cash. On the other hand, the relationship between cash holdings and growth opportunities is ambiguous, so does the relationship between cash holdings and cash flow. Our findings are generally in support of the trade-off theory. Both transaction and precautionary motives play important roles in explaining the determinants of cash holdings for Chinese listed companies
Solitary wave of ground state type for a nonlinear Klein–Gordon equation coupled with Born–Infeld theory in R2
In this paper we prove the existence of nontrivial ground state solution for a nonlinear Klein–Gordon equation coupled with Born–Infeld theory in involving unbounded or decaying radial potentials. The approach involves variational methods combined with a Trudinger–Moser type inequality and a symmetric criticality type result
Multi-Fields Modulation of Physical Properties of Oxide Thin Films
Oxide thin films exhibit versatile physical properties such as magnetism,
ferroelectricity, piezoelectricity, metal-insulator transition (MIT),
multiferroicity, colossal magnetoresistivity, switchable resistivity, etc. More
importantly, the exhibited multifunctionality could be tuned by various
external fields, which has enabled demonstration of novel electronic devices.
In this article, recent studies of the multi-fields modulation of physical
properties in oxide thin films have been reviewed. Some of the key issues and
prospects about this field are also addressed.Comment: review article, 56 pages, 18 figure
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