Destination Image Saturation

Offering travel information sources to potential tourists can be expensive, although the importance of the amount and variety of travel information sources has been stressed in many studies. Therefore, it would be useful to examine how much exposure to travel information would lead to optimal results. Effects of exposure time to travel information on destination image were examined in this study. Two hypotheses were suggested to account for the relationships between exposure time to travel information and destination image. Specifically, the first hypothesis was related to a linear trend, while the second one was related to a quadratic trend in the conceptual relationships. A posttest-only control group design was used, and 312 undergraduate students were recruited at six colleges. Multivariate analysis of variance and a series of quadratic regression analyses were used to test the two hypotheses. Results demonstrated that there were both linear and quadratic trends in the relationships between exposure time to travel information and destination image. Findings also provided empirical evidence for a saturation effect on perceived destination image formation. Therefore, an optimum level between information exposure and perceptions was suggested.     

公路隧道锚杆锚固质量检测技术与应用

基于锚固体系的锚杆动力学和波动理论,应用声频应力波在不同波阻抗面反射的能量和相位的变化原理,文章指出了锚杆锚固质量快速检测的应力波反射法,探讨了锚杆长度及注浆饱满度的判别方法,应用于湖南某高速公路隧道的系统锚杆检测试验。结果表明,应力波反射法检测隧道锚杆,检测结果与实际长度吻合,丰富了隧道围岩锚固质量检测方法,为隧道工程建设提供更好的质量保障。     

从饱和性分析逆周期政策选择

经济社会生活中日益表现出来频繁的经济波动以及非确定的经济发展周期,给经济社会的稳定发展带来了很大的影响。为了应对不断增强的不确定性和最大限度地降低经济波动对经济活动的消极影响,学者们从不同的角度对经济波动给予各种不同的解释和说明,进而提出了各种各样的应对政策与管理方法,逆向政策选择成为一种必要的应对措施。本文在经济学分析的框架之下,从效用的饱和性角度来说明经济波动的内在机制以及逆向政策选择的意义。     

睡眠呼吸分析系统的串行通信

对利用C++Builder实现睡眠呼吸分析系统的串行通信方法进行了较为详细的阐述和分析,重点介绍了C++Builder中通信控件MSComm的功能特点、常用属性设置,并给出了睡眠呼吸分析系统中PC机与单片机血氧饱和度模块间串行通信的实现方法。