期刊文献+
共找到2篇文章
< 1 >
每页显示 20 50 100
冰火两重天2014年中国打印耗材市场回顾 被引量:1
1
《办公自动化》 2015年第9期30-,共1页
IDC最新的《中国打印耗材市场季度跟踪报告》显示,2014年全年中国打印机耗材总出货量接近1.16亿支,其中喷墨耗材5933.5万支,环比2013年下降了8.7%,激光耗材5651.6万支。环比2013年大增24.8%。销售额方面,2014年喷墨耗材销售额为4.26亿美... IDC最新的《中国打印耗材市场季度跟踪报告》显示,2014年全年中国打印机耗材总出货量接近1.16亿支,其中喷墨耗材5933.5万支,环比2013年下降了8.7%,激光耗材5651.6万支。环比2013年大增24.8%。销售额方面,2014年喷墨耗材销售额为4.26亿美元,环比2013年下降10.5%;而2014年激光耗材销售额则环比增长8.3%,达到17.8亿美元。在此消彼长的背后究其原因。 展开更多
关键词 打印耗材 打印机耗材 喷墨打印机 黑白打印 购买需求 多功能一体机 霍原 主流厂商 环保概念 系列产
下载PDF
Existence of solutions for a critical fractional Kirchhoff type problem in(49)R^N 被引量:10
2
作者 XIANG MingQi ZHANG BinLin QIU Hong 《Science China Mathematics》 SCIE CSCD 2017年第9期1647-1660,共14页
This paper concerns with the existence of solutions for the following fractional Kirchhoff problem with critical nonlinearity:where (-△)s is the fractional Laplacian operator with 0 〈 s 〈 1, 2s* = 2N/(N - 2s)... This paper concerns with the existence of solutions for the following fractional Kirchhoff problem with critical nonlinearity:where (-△)s is the fractional Laplacian operator with 0 〈 s 〈 1, 2s* = 2N/(N - 2s), N 〉 2s, p ∈ (1,2s*), θ∈ [1, 2s*/2), h is a nonnegative function and A is a real positive parameter. Using the Ekeland variational principle and the mountain pass theorem, we obtain the existence and multiplicity of solutions for the above problem for suitable parameter A 〉 0. Furthermore, under some appropriate assumptions, our result can be extended to the setting of a class of nonlocal integro-differential equations. The remarkable feature of this paper is the fact that the coefficient of fractional Laplace operator could be zero at zero, which implies that the above Kirchhoff problem is degenerate. Hence our results are new even in the Laplacian case. 展开更多
关键词 fractional Laplacian Kirchhoff problem mountain pass theorem Ekeland variational principle
原文传递
上一页 1 下一页 到第
使用帮助 返回顶部