浅谈中学作文教学

做人与作文密切相关,因此,在作文教学中根据学生的心理特性,充分发挥美育的作用,遵循美的规律,营造美的氛围,在审美化教学活动中实现做人,这才是作文教学的最终目的.为此,本文着重阐述了中学作文教学中的根本原则和具体原则.     

有期权条件下的易逝品订购策略研究

在现实生活中,有大量的易逝品存在.由于易逝品价值递减的特性和需求的不确定性,使易逝品的订购较为困难并可能在期末由于未能出售导致零售商蒙受巨大的损失.作者将期权引入了易逝品订购之中,以最大化期望收益为目标,给出了易逝品最优订购数量.     

Alterations in IGF-I affect elderly: role of physical activity

The growth hormone–insulin-like growth factor I (IGF-I) axis is an important physiological regulator muscle for development. Although there is evidence that aging muscle retains the ability to synthesize IGF-I, there is also evidence that aging may be associated with attenuation of the ability of exercise to induce an isoform of IGF-I that promotes satellite cell proliferation. However, it is clear that overexpression of IGF-I in the muscle can protect against age-related sarcopenia. Strength training appears to be the intervention of choice for the prevention and treatment of sarcopenia. IGF-I has been implicated in the loss of the muscle with age, and IGF-I expression levels change as a consequence of strength training in older adults. However, it seems that advancing age, rather than declining serum levels of IGF-I, appears to be a major determinant of life-time changes in body composition in women and men. We concluded that resistive exercise is a significant determinant of muscle mass and function. Elevated levels of IGF-I have been found in physically active compared to sedentary individuals. Recent work suggests that IGF-I as a mediator plays an important role in muscle hypertrophy and angiogenesis, both of which characterize the anabolic adaptation of muscles to exercise.     

双轴平动椭圆振动筛设计中的有关问题

本文在首次提出双轴惯性振动筛“力心”概念的基础上,对双轴惯性椭圆振动筛设计中的有关分析进行了讨论,列举了若干算例,编制了相应的计算机软件,可供振动筛研制设计时应用。根据本文所述方法,已经研制成功了具有平动椭圆运动轨迹的PTZS振动筛。     

高考试卷升级为国家绝密与反作弊手段的现代化

高考试卷今年升级为国家绝密，是高考反作弊工作的重要措施。随着科技的进步，作弊手段越来越现代化，而反作弊手段也必须相应地提高现代化的程度。只有这样，我们才能够有效地防止和反对高考过程中的作弊行为，并对作弊行为进行坚决的打击和处罚。     

《刘子》作者新证

《刘子》作者究竟为谁，自唐迄今，众说纷纭，莫衷一是。因其涉及《文心雕龙》的作者刘勰，故弄清事实真相不仅对《刘子》的研究十分重要，而且对“龙学”的研究也具有特殊意义。通过爬梳史料，原始以要终，辨析考证，认为《刘子》作者乃梁朝之刘遵。     

鄂西珍稀植物资源及其保护

对湖北西部103种珍稀植物的经济和科学研究价值进行了论述，并对如何保护这些珍稀植物提出了一些建议．     

Major-in-weight Efficiency and Major-in-weight Optimality of Multiple Criteria Decision Making

基于不同目标的权重不同，以“好目标的权重和越大，相应的方案越好”作为决策准则，提出了一种新的多目标决策有效性理论。其关键概念是β－较重有效解与β－较重最优解。文中证明了解的性质。讨论了该类解与Ｐａｒｅｔｏ－有效解的关系。     

TMS32010自适应均衡系统的开发与实现

本文使用新一代的高速信号处理片TMS32010设计出LMS算法的自适应均衡(AE)系统。在收敛性能、处理速度、小型化、使用灵活性及成本费用诸方面均优于或等于用模拟电路、专用数字电路及一般16位微机制成的AE系统。文中叙述了TMS32010 AE系统的设计思想,总体设计和硬、软件设计方法,结构框图,设计时需注意的各种问题以及试验結果。通过实验证明,系统是成功的,其性能与理论分析相符。本文所述方法除可用于LMS算法的AE设计外,也可用于其它AE算法的设计,且若适当改变程序及少量输出接口硬件,尚可用于其它数字信号处理,如调制解调、谱估计及声音控制等。