风景旅游区游客流空间移动模式的实证研究

采用移动比率矩阵阈值分析法、景区选择顺序评分法，揭示了崀山旅游区游客流的移动模式：以最奇特景区为汇点、组合最美景区为意境中的终点，旅客旅游中预去的景区数与途中距离成正比，进入的方向影响到首位景区的选择等规律，并分析其成因，在此基础上对崀山旅游线路的优化提出初步建议。     

大理州儿童青少年先天性心脏病流行病学调查

目的:了解大理州儿童青少年先天性心脏病(先心病)流行病学特征,让先心病患者得到早期诊断避免失去手术治疗的机会。方法:对大理州12646名儿童青少年按初筛、复检、确诊三个阶段进行调查。结果:检出先心病15例,以室间隔缺损为最多见(40%,6/15),儿童青少年先心病患病率为1.19‰(15/12646),男性患病率为1.23‰(8/6519),女性患病率1.14‰(7/6127),白族患病率1.35‰(13/9655),略高于全国平均水平。结论:大理地区先心病以室间隔缺损为主,男女性患病率间的差异没有统计学意义。     

不同授粉方式对水稻手工杂交结实率的影响

水稻手工杂交中,采用当日授粉1次、当日隔时授粉2次和隔日授粉2次对杂交结实率的影响差异并不显著。不同授粉方式对穗颈以上2个节位枝梗上结实率的影响差异也不显著,且穗颈以上2个节位枝梗上的结实数与整穗结实无密切关系,可去除。     

不同浓度赤霉素处理对西瓜种子发芽的影响

试验表明,采用适宜浓度的GA3处理,可以显著提高西瓜种子的发芽率,其中400mg/L(30℃)GA3能显著提高小兰、新冠的发芽率,50—100mg/L(30℃)GA3能显著提高宝冠、新金兰的发芽率,而300mg/L(30℃)GA3能提高和平的发芽率。     

Mechanical characterization and strain-rate sensitivity measurement of Ti- 7333 alloy based on nanoindentation and crystal plasticity modeling

The relationship between crystal orientations and meso-mechanical properties of β phase Ti-7333 titanium was investigated through the combination of nanoindentation experiments and simulation. The crystal plasticity finite element(CPFE) model for nanoindentation of single body-centered cubic crystal was established based on the experimental data. And the crystal plasticity constitutive law was implemented to simulate the nanoindentation process, obtaining satisfied results with an acceptable error. From the simulated pileup morphology patterns with different crystal orientations, it was found that the β phase experienced a symmetrical and orientation-related deformation process. Meanwhile, the strain-rate sensitivity(SRS) of β phase was investigated through nanoindentation tests based on continuous stiffness measurement(CSM) under different strain rates,varying between 0.2, 0.05 and 0.01 s~(-1). Two grains with different orientations exhibited similar SRS exponents,m, calculated from the experimental results.     

坚持公益办馆，提高全民阅读力

随着计算机网络了的推广，人们的阅读偏好的改变，传统的图书馆面临着各种挑战。本文讨论了在图书阅读率持续下滑的情况下，公共图书馆更应坚持公益办馆，提高全民阅读力，提高全民素质。     

Cardiovascular development: towards biomedical applicability

Advances in our understanding of cardiac development have fuelled research into cellular approaches to myocardial repair of the damaged heart. In this collection of reviews we present recent advances into the basic mechanisms of heart development and the resident and non-resident progenitor cell populations that are currently being investigated as potential mediators of cardiac repair. Together these reviews illustrate that despite our current knowledge about how the heart is constructed, caution and much more research in this exciting field is essential. The current momentum to evaluate the potential for cardiac repair will in turn accelerate research into fundamental aspects of myocardial biology.     

随机现金流下的违约回收率模型

违约回收率是信用风险管理的基础变量,债务人的财务状况是影响违约回收率的重要因素之一。当公司遇到财务困难时现金流的不确定性非常高,本文利用连续时间资产定价理论,研究了债务人随机现金流情况下的违约回收率,违约回收率是公司现金流状况的内生变量。违约回收率与公司现金流压力,现金流漂移率,公司违约区间相对长度正相关,与现金流波动率负相关。用四川大额不良贷款数据验证了模型结果。     

人体运动心率的实时检测与分析

本文采用信号处理的方法,在对运动心率检测中各种有利条件和不利因素分析的基础上,提出了一种人体运动心率实时检测方法。此法已在我国一些优秀运动队的训练和比赛中运用。     

血液循环模拟教具的制作与教学效果

自制的人体血液循环模拟器能明确表示出人体一滴血的循环过程,心脏的跳动与血液流动的关系。经过课堂实际应用,收到了显著效果。