入世"后过渡期"我国产业经济发展及其安全问题     

肖艳 《衡阳师范学院学报》2006,27(5):60-62

产业发展与安全是一国经济快速、平稳发展的基本前提,它对一国经济发展有着极为重大的意义。我国已进入入世“后过渡期”,相应地,此一期间我国产业发展与安全形势,包括面临的问题和适宜采取的应对措施也必将发生许多变化。本文在分析我国入世后过渡期内经济发展可能面临的严峻形势与挑战的基础上,重点阐述了在此期间我国产业发展与安全保护将要面临的一些主要问题,同时从多方面提出了应对这些问题的基本策略。  相似文献   

用逆投影法画工程截断体和相贯体的轴测图     

杨忠贤 《杨凌职业技术学院学报》2003,2(2):40-42,45

西轴测图的方法很多，有坐标法、叠加法、切割法和特征面法等，但这些方法对面工程截断体和相贯体的轴测图存在着作图烦锁，且必须在投影图中要先把交线求出来后方能作轴测图，不易于掌握，现提出用逆投影法西截断体和相贯体的轴测图，方法简单，作图便利。  相似文献   

伴随模式在反恐情报同步轨迹数据分析中的应用研究     

李勇男 《现代情报》2018,38(12):65-69

[目的/意义]对反恐情报中的时空轨迹数据进行伴随模式挖掘,可以发现涉恐群体的同时间段动态空间位置移动规律。[方法/过程]根据反恐情报数据的特点,修改经典伴随模式挖掘方法中的相似度度量方式和聚类方式,不断迭代完成"聚类和取交集"操作,将满足条件的涉恐活动时空轨迹伴随模式导出。[结果/结论]该方法能够挖掘涉恐群体的同步移动路径,定位重点活动地点,分析涉恐人员之间的亲近度,为打击暴恐活动提供数据参考。  相似文献   

Circadian rhythm effect on physical tennis performance in trained male players     

Álvaro López-Samanes  Diego Moreno-Pérez  José L. Maté-Muñoz  Raúl Domínguez  Jesús G. Pallarés  Ricardo Mora-Rodriguez 《Journal of sports sciences》2017,35(21):2121-2128

To determine the effect of circadian rhythm on neuromuscular responses and kinematics related to physical tennis performance, after a standardised warm-up, 13 highly competitive male tennis players were tested twice for serve velocity/accuracy (SVA), countermovement vertical jump (CMJ), isometric handgrip strength (IS), agility T-test (AGIL) and a 10-m sprint (10-m RUN). In a randomised, counter-balance order, tennis players underwent the test battery twice, either in the morning (i.e., AM; 9:00 h) and in the afternoon (i.e., PM; 16:30 h). Paired t-tests were used to analyse differences due to time-of-day in performance variables. Comparison of morning versus afternoon testing revealed that SVA (168.5 ± 6.5 vs. 175.2 ± 6.1 km · h^?1; P = 0.003; effect size [ES] = 1.07), CMJ (32.2 ± 0.9 vs. 33.7 ± 1.1 cm; P = 0.018; ES = 1.46), AGIL (10.14 ± 0.1 vs. 9.91 ± 0.2 s; P = 0.007; ES = 1.23) and 10-m RUN time (1.74 ± 0.1 vs. 1.69 ± 0.1 s; P = 0.021; ES = 0.67) were significantly blunted during the morning testing. However, IS was not affected by time-of-day (P = 0.891). Thus, tennis performance may be reduced when competing in the morning in comparison to early evening. Therefore, coaches and tennis players should focus on schedule the SVA, power, speed and agility training sessions in the afternoon.  相似文献   

Lifesource XL-18 pedometer for measuring steps under controlled and free-living conditions     

Sam Liu  Dina Brooks  Scott Thomas  Gunther Eysenbach  Robert Peter Nolan 《Journal of sports sciences》2015,33(10):1001-1006

The primary aim was to examine the criterion and construct validity and test–retest reliability of the Lifesource XL-18 pedometer (A&D Medical, Toronto, ON, Canada) for measuring steps under controlled and free-living activities. The influence of body mass index, waist size and walking speed on the criterion validity of XL-18 was also explored. Forty adults (35–74 years) performed a 6-min walk test in the controlled condition, and the criterion validity of XL-18 was assessed by comparing it to steps counted manually. Thirty-five adults participated in the free-living condition and the construct validity of XL-18 was assessed by comparing it to Yamax SW-200 (YAMAX Health & Sports, Inc., San Antonio, TX, USA). During the controlled condition, XL-18 did not significantly differ from criterion (P > 0.05) and no systematic error was found using Bland–Altman analysis. The accuracy of XL-18 decreased with slower walking speed (P = 0.001). During the free-living condition, Bland–Altman analysis revealed that XL-18 overestimated daily steps by 327 ± 118 than Yamax (P = 0.004). However, the absolute percent error (APE) (6.5 ± 0.58%) was still within an acceptable range. XL-18 did not differ statistically between pant pockets. XL-18 is suitable for measuring steps in controlled and free-living conditions. However, caution may be required when interpreting the steps recorded under slower speeds and free-living conditions.  相似文献   

基于Flash的冒泡排序算法的演示实现     

邱秀荣  赵莉苹  蔡镔 《安阳工学院学报》2011,10(6):48-49,63

本文利用简单易用的Flash和ActionScript技术,实现了仿真较高的冒泡排序算法的实现过程,具有直观,易于接受,逼真等特点,这对研究冒泡排序算法来说,具有一定的意义。  相似文献   

VB冒泡排序的四种算法实现     

胡绪英 《人天科学研究》2014,(11):43-45

排序是数据处理中很重要的技术之一,冒泡排序是实现排序功能诸多方法中的一种。根据冒泡排序算法思想,讨论了4种算法,并在Visual Basic环境中实现。  相似文献   

论中国语境下Disinformation概念的对接、转换与重新阐释     

彭知辉 《情报理论与实践》2022,45(1):1-10

[目的/意义]针对中西方理解与应用Disinformation概念存在较大差异这一现状,提出中国语境下这一概念的对接、转换与重新阐释,为围绕中国问题开展Disinformation研究创造条件,进而在我国开辟新的研究领域。[方法/过程]梳理分析中西方理解Disinformation概念的差异,然后基于这一概念的3种基本属性,提出Disinformation概念进入中国语境的基本路径,即"对接→转换→重新阐释"。[结果/结论]"信息""误导""意图"3种属性及施众、受众两个要素,是中西方Disinformation概念对接、转换的基础和依据;从"信息"和"信息活动"两个角度,提出中国语境下Disinformation概念的两种定义,Disinformation则译为"误导性信息"或"信息误导与反误导"。Disinformation概念经重新阐释,可应用于研究中国社会现象,解决中国现实问题。  相似文献   

三菱可编程序控制器中高速计数器的研究与应用     

马汉伟  邓军 《科教文汇》2014,(21):56-56

本文就电气自动化领域广泛使用的可编程序控制器的高速计数器的应用作了详细的说明。由于高速计数器计数频率高,并能跳出可编程序控制器的循环扫描周期,在实际应用中使用价值很高。本文通过举例详细说明了高速计数器与编码器的匹配、最高频率的选取、相关指令与中断的组合运用。  相似文献   

论构建中国特色的网络文化     

谢英霞 《黄河科技大学学报》2003,5(4):130-132,148

在互联网时代，一个国家、一个社会如果不想被世界潮流抛得太远的话，就得借助网络的形式，去传播、弘扬本民族和本社会的优秀文化，去建设本民族、本社会新的文明。在“三个代表”重要思想的指导下，构建中国特色的网络文化，正是代表中国先进文化前进方向的具体行动。  相似文献