China,More than Self-Sufficient

At the moment,the whole world faces the most severe inflation in food prices in history,as grain and soybean prices climb to all-time highs.Although some observers blame the weather for the decrease in crop yields and that the growing demand for cereals used for bio-fuel production has conspired toward continuous price rises on world grain ma ket;others regard it simply as a matter of demand outpacing supply.In seven of the last eight years,world grain production has fallen behind rates of consumption.     

中美大豆竞争力分析

与美国相比,中国大豆竞争力持续走低的原因,一是我国大豆的间接成本远高于美国;二是美国政府 的大豆补贴政策导致了中美不公平竞争。再者,美国规模化、现代化的生产和高度专业化和社会化的服务体系, 也增强了其大豆产品在国际市场上的竞争力。     

世界大豆贸易格局的演变及对我国的启示

20世纪80年代以后,世界大豆出口市场上形成美国、巴西与阿根廷的寡头垄断格局,我国由1996年前的净出口国和最大生产国之一转为如今世界最大的净进口国。本文对这种贸易格局的演变和原因以及这些寡头的策略行为进行了分析,并针对我国长期与短期策略选择进行了探讨。     

中国大豆外贸依存度影响因素分析

本文利用年度数据,测算了1988—2007年中国大豆外贸依存度,并对中国大豆外贸依存度的变化趋势特征进行了分析。在此基础上,构建了中国大豆外贸依存度实证模型,定量分析了中国大豆外贸依存度的影响因素。研究结果表明:国内大豆压榨需求和大豆关税税率的变化对中国大豆外贸依存度具有显著影响;而国内外大豆价格差、外汇储备以及实施转基因安全管理条例等因素对中国大豆外贸依存度的影响不显著。     

Egypt’s digital activism and the Dictator’s Dilemma: An evaluation

In recent years academics have used the term Dictator’s Dilemma to describe the impact of the Internet on undemocratic societies. The Dilemma says that if dictatorial rulers permit increased Internet penetration, they risk overthrow; if they do not, they isolate themselves from the global information economy, causing economic decline. Since Internet penetration world-wide has deepened, the Dilemma implies that dictatorships are bound to fall one by one. But how good is the Dilemma as an analytical device? Not very, this essay argues, using the Egyptian uprising of January 2011 as a case study. By examining the state’s Internet politics before 2011, the use of the Internet by Egyptian resistance activists, and the power relations that existed after the overthrow of the Dictator, this essay argues that the Dictator’s Dilemma blinds scholars to what really happens on the ground.     

Origin 8软件在弹簧振子和惯性秤中的应用

采用Origin软件研究了惯性称和弹簧振子的振动周期T2和质量m的关系以及不同形状的弹簧修正系数C的关系。通过Origin软件拟合可以得到符合实验要求的光滑曲线,使得实验结果处理更加直观和简便。实验结果表明,弹簧的修正系数C和弹簧的形状有关,不具有普适性。     

先进制造技术在汽车零部件上的应用

文章以实际产品为例,说明先进制造技术在汽车零部件生产过程中的重要意义。先进制造技术的应用,提高了产品质量及生产效率,降低了成本,实现了多样产品共线生产,大大提高了产品在市场上的竞争力。     

国际市场对我国大豆进口的垄断力研究

美国、巴西和阿根廷是我国三大大豆主要进口来源国,文章运用勒纳指数和GK模型测定我国大豆进口的需求弹性并分时期检验这三国对我国大豆进口的垄断程度。研究结果表明:三国基本掌握了我国大豆供给市场,美国始终对我国大豆进口存在显著的市场垄断力,巴西和阿根廷对我国大豆进口的市场垄断力在逐渐增强。因此,在面对强势的国际垄断情形下,有必要对我国国内大豆供给市场进行整合,形成强有力的国内寡头供应市场以降低国际市场垄断力,为我国大豆产业提供广阔的发展空间。     

内蒙古大豆产业发展现状及对策分析

内蒙古的大豆产业具有自然条件优越、种植区域集中、发展速度快等特点,是我国高油大豆的重点发展区域。但优质品种少、覆盖面积小、生产成本高,基础设施及技术力量薄弱等问题制约了内蒙古大豆产业的发展。应采取提高大豆单产、加强农业基础设施建设、推广大豆规范化生产、成立大豆产业协会等措施,促进内蒙古大豆产业的发展。     

Assessing visitors' experiences at hot spring recreation areas in Taiwan

This study assessed the recreational experiences of tourists and aims to discuss the sustainable development of hot spring recreation areas in Taiwan. The study employed questionnaires that included variables measuring importance, satisfaction, sustainable development, and demographic and recreational characteristics. The rate of repeat visits was extremely high. Moreover, tourists strongly agreed that hot spring recreation areas should develop ecotourism programmes. This study concludes that hot spring recreation areas could utilise their natural landscapes, hot spring quality, hotel service quality and proximity to neighbouring destinations to develop themselves. Copyright © 2009 John Wiley & Sons, Ltd.