论文部分内容阅读
本文通过大量的实例,论述了网络环境下用户信息需求的存在形式和特点.
网络环境下的用户信息需求分析
【摘 要】
：
本文通过大量的实例,论述了网络环境下用户信息需求的存在形式和特点.
【机 构】
：
云南大学图书馆,云南大学新闻中心
【出 处】
：
云南电大学报
【发表日期】
：
2004年期
其他文献
从选取真实的材料、把握科学的观点和采用恰当的论证方法三个方面,阐述了科学性这一科技论文的首要特征,认为把握科学性的特征是写好科技论文的第一前提,并就如何把握这一特
To develop new kinds of matrix resin of composite and utilize lignosulfonate in large scale and high value, a kind of lignosulfonate was modified into epoxide i
The electrochemical properties and microstructures of MlNi3.5Co0.75-xSixAl0.2Mn0.55 were systematically studied. In order to decrease the cost of electrodes, Co
A multi-tube air-lift loop reactor (MT-ALR) is presented in this paper.Based on the energy conservation, a mathematical model describing the liquidcirculation f
The effect of four kinds of rare earth elements on the depositing rate of Ni-based alloy brush plating coatings was investigated. The results indicate that all
The stretching and folding of fluid element during chaotic mixing field isstudied using numerical method. The chaotic mixing process is caused byperiodicseconda
The interface reaction between ultraviolet irradiated polypropylene(UV-PP) and an amino silane coupling agent, γ-aminopropyltrimethoxysilane (γ-APS) adsorbed
作为享誉世界的中国古典名著,《红楼梦》及其译本一直以来备受瞩目,而其中习语作为具有地域特色的文化元素,其翻译尤其值得关注。本文以德国功能主义目的论为指导,通过对比分
The behavior of monazite concentrate reduced by carbon, especially the decomposed procedure of rare earth phosphates, was investigated by X-ray diffraction , el
The mechanically stirred internal loop airlift reactors equipped with or without static mixersare devised for intensification of gas-liquid mass transfer rate.