产品竞争力的分析方法

为了提高产品的市场竞争力，必须采取一定的方法对产品进行竞争力分析。本文提出了一种实用的、基于客户价值的产品竞争力分析方法，该方法通过产品量化的客户感知价值和客户感知成本的组合比较，确定了产品的相对竞争力。     

连续网络上的占线可恢复加拿大旅行者问题

针对堵塞完全在无法预知的情况下一个个出现，且堵塞恢复时间信息可以获取的占线可恢复加拿大旅行者问题，给出连续网络上的等待策略和移动策略以及相应策略下的竞争比，并对两种策略的执行效果进行分析和比较。     

非常返Markov链的比率极限

比率极限是Markov链理论中人们比较关心的问题之一．Doeblin‘s ratio定理给出了常返Markov链的比率极限limN→∞∑n=0^NPij^(n)/∑n=0^NPkh^(n)=1/gjh,本文对非常返Markov链，给出了用fij，gjh,fjh和fkh表示的比率极限，使这类问题的结果更趋于完备．     

高科技企业竞争的网络特征及其对策

本文从提高我国高科技企业持续创新能力的现实需要出发 ,在对高科技产业核心资源和市场特性分析的基础上 ,从网络效应角度具体分析了其竞争的网络特征 ,最后从培育核心能力 ,实施网络作战等方面提出了在网络竞争环境下 ,提升高科技企业竞争优势的具体对策。     

比值居民地指数在城镇信息提取中的应用

TM图像中由于裸地与城镇光谱特征相似，利用传统的分类方法难以区分二者，城镇提取精度很难令人满意针对这一问题，本文提出了一种新的方法即比值居民地指数（RRI）法用于城镇信息提取，同时与最大似然监督分类法作对比，研究结果表明，RRI法（精度达87.50％）优于最大似然分类法（精度为78．13％），是一种提取城镇居民地信息的理想方法，尤其适合裸地较多的干旱半干旱地区．     

竞技体育文化的几点内涵探析

竞技体育是一种特殊的体育文化现象,以竞技体育文化为内核的奥林匹克运动超越了一般体育文化的范畴,成为社会发展的主流文化,更说明了竞技体育文化的特殊性。随着现代社会的整体进步,竞技将更贴近人性,更能表现人类最原始、最本质的力量与价值,存在方式与独立尊严。此文从竞技体育的文化本质、竞技体育文化的民族精神、竞技体育文化的人本思想三个方面探讨了这种崭新并不断完善的文化体系,为更深入地分析竞技体育文化的内涵提供一些参考。     

甘孜州旅游产业竞争优势的构建

随着旅游业的发展，旅游业竞争不再是仅仅立足于旅游资源优势基础之上的低层次竞争，而是在旅游产品质量、品牌、服务等方面的综合和高层次竞争．区域旅游业的发展过程实质上就是区域旅游产业整体竞争力不断提高的过程．在介绍比较优势原理和产业竞争优势原理的基础上，分析甘孜州旅游产业构成要素所具有的优势和劣势，最后提出构建甘孜州旅游产业竞争优势的建议．     

Optical sensing of explosives in wastewater by competitive complexation

A facile strategy for optical sensing of explosives with the assistance of 1,3,5-Triazine-2,4,6-triamine(MEL) in aqueous solution is proposed. Upon exposure to MEL, the electron-sufficient amino group in MEL was prone to form complexes with electron-deficient nitro group in explosives. The interaction could be tuned by the amount of MEL to fully consumed nitro-contained explosives dissolved in wastewater, thus prevented the gold nanoparticles(GNPs) from combining with MEL. In comparison with common detection method, the dose-response curve procedure reported here was in good linear relationship from 0 μM to 80 μM with good correlation factor(R~2= 0.9871), and was satisfactorily agreed with the proposed theoretical model. The detection limit(Lo D) was1.1 μM by spectrometer, 3.0 μM visualized by naked eyes and 21.3 nM by calculation. The procedure described in this study could be finished within a few minutes and showed its effectiveness in explosive detection upright on the gold surface in real wastewater, making this proposed method a powerful tool in several sensing platforms.     

Population dynamics,age structure and sex ratio of the bromeliad-dwelling jumping spider,Psecas chapoda (Salticidae)

In this study, the population fluctuations, phenology and sex ratio of the bromeliad-dwelling jumping spider Psecas chapoda were investigated in an area of semi-deciduous forest in south-eastern Brazil. Psecas chapoda occurred and reproduced on Bromelia balansae (Bromeliaceae) throughout the year. The number of egg sacs increased at the beginning of the rainy season (September to December), but the population size and phenology were stable over time and correlated weakly with rainfall and temperature. The principal factor affecting the dynamics of P. chapoda was the blooming of B. balansae, which expelled spiders because of the drastic change in plant architecture. Male spiders were more frequent than females during the juvenile phase, whereas females were more frequent than males during the subadult and adult phases, suggesting a sex ratio that favoured males. The biotic and abiotic factors that influence the population dynamics and sex-dependent vulnerability determination are discussed.     

论艺术市场中多样化产品营销的优势

随着艺术市场竞争的加剧，市场营销的作用和价值与日俱增，市场营销的方式与手段也不断地推陈出新，多样化产品营销方式也越来越为各个艺文企业开疆拓土所倚重。