勘探创造力的增强需要体制创新

建立一个与市场经济相适应的,对创造性劳动受到尊重、支持、鼓励的创新体制,是实现创造力持续增长的关键。为此就要在干部制度、分配奖励制度和资金管理制度上深入改革,进行制度创新,为培养造就综合素质强的复合型人才,使创造性工作能获得持久的动力与激励提供条件和保证。     

基于水印的图像认证和完整性保护技术

数字水印技术的发展为解决图像认证和完整性保护问题提供了新的思路。对用于篡改检测和图像认证的水印技术做了综述。数字水印技术根据其识别差错的能力分为四种类型:易损水印、半易损水印、混合水印和自嵌入水印。最后还对水印认证技术的安全性问题进行了讨论。     

与供应商的采购合作关系分析

对与供应商的采购合作关系进行了初步的分析，通过需求分析、选择供应商、正式建立合作关系、实施和加强合作关系4个过程展开，分别对筛选战略、供应管理计划流程、供应商的评估和选择、认证管理等关键问题进行初步分析，旨在使采购工作趋于完美。     

多臂井径成像测井技术

多臂井径成像测井技术同以往的40臂、X—Y井径等非成像工程测井相比具有较为明显的优势，不但可以做定量解释提供最大、最小、平均井径值，而且可以提供更为直观的18条或36务独立的测井曲线、磁井径，磁重量、井温、井壁立体图、井壁成像图、井壁截面图，为检测井下套管的完好性及修复提供了更为可靠直观的资料，满足了地质学家及时监测套管状况的要求，也为油井作业、大修提供全面、准确的套管全貌。文章介绍了18臂、36臂两种井径成像测井技术。并通过对测试资料实例的解释、分析、研究，总结了多臂井径成像测井技术的特点及应用效果。     

催化裂化汽油固体碱脱硫-固定床脱臭组合工艺的开发

在对活性剂、活化剂等对固体碱脱除硫化氢性能影响研究的基础上,对催化裂化汽油固体碱脱硫-固定床脱臭组合工艺进行了实验室小试,结果表明,固体碱完全可以取代液体碱而用于催化裂化汽油的精制.相对于液体碱洗-固定床脱臭工艺,无论再生前还是再生后,固体碱脱硫-固定床脱臭组合工艺使装置运转时间延长一倍以上.介绍了该组合工艺的流程设计和工业应用.     

浅谈如何有效学习计算机软件知识

计算机软件知识的学习并不是完全线性的，而是不断循环往复、迭代的过程。本对如何深入、广泛、有效地学习计算机软件知识做出了一些探讨。     

Image registration by "Super-curves"

We solve the 2-D affine image registration problem by curve matching and alignment. Our approach starts with a super-curve, which is formed by superimposing two affine related curves in one coordinate system. We use B-spline fusion technique to find a single B-spline approximation of the super-curve and a registration between the two curves simultaneously. This approach achieves superior accuracy and efficiency in curve matching and alignment. We then address the occlusion problem by finding partial match between the curves segmented using inflections and cusps, which are affine invariant. The combination of edge detection and curve alignment lead to accurate image registration.     

Noise-Assisted Signal Reception in Threshold Neuron

1IntroductionSometi mes,noise can i mprove signal transmission orsignal processing in a nonlinear system.This phe-nomenonis the so-called Stochastic Resonance(SR)[1].Most studies of SRinvolve asubthresholdsignal througha single nonlinear systemand the non…     

基于AT89C2051的单户可视对讲门铃室内分机的设计

本文介绍一种基于单片机AT89C2501的单户可视对讲门铃室内分机的工作原理及软、硬件的设计与实现方法。     

Inhibition of intratracheal lung cancer development by systemic delivery of E1A

Amplification or overexpression of HER-2/neu in human lung cancer has been correlated with poor prognosis and chemoresistance. We have previously reported that the adenovirus type 5 early region 1A (E1A) gene product can suppress HER-2/neu-mediated transformation phenotypes through inhibition of HER-2/neu expression. To find an efficient way to treat HER-2/neu-overexpressing lung cancer with E1A, a replication-deficient adenovirus containing the E1A gene, Ad.E1A(+), was used to transduce E1A into HER-2/neu-overexpressing and low expressing human lung cancer cell lines. Tumour cell growth in vitro and colony formation in soft agarose were greatly inhibited by Ad.E1A(+) transduction in HER-2/neu-overexpressing lung cancer cell lines. In HER-2/neu low expressing cell lines, E1A could not inhibit cell growth in vitro but could reduce the colony formation ability in soft agarose, indicating different effects of E1A in these two types of cancer cells. To test the therapeutic efficacy of E1A to lung cancer by systemic delivery in vivo, tumor-bearing mice were established by intratracheal injection of lung cancer cells and treated by i.v. tail injections of Ad.E1A(+). As a result, Ad.E1A(+) suppressed HER-2/neu overexpression and inhibited intratracheal lung cancer growth. However, no significant tumor suppression effect of Ad.E1A(+) was observed in mice bearing HER-2/neu low expressing cell line when the same therapeutic procedure was followed. Thus, we conclude that systemic delivery of Ad.E1A(+) can efficiently achieve therapeutic effect in HER-2/neu-overexpressing lung cancer in vivo.