浅谈计算机网络会计在网络财务中所起的作用

通过与传统会计信息系统的比较，分析了计算机网络会计信息系统及网络财务所具有的特点，阐述了计算机网络会计信息系统在网络财务管理中所起的作用。     

圆柱蜗杆与蜗轮的加工测量

给出了圆柱蜗杆及蜗轮轮齿在任意半径处弦齿厚计算的精确公式，采用了圆球法测量蜗轮直径方向的两齿间距，为了计算上的需要，引进了蜗轮弦齿厚计算斜齿轮的概念和斜齿轮测量圆棒跨距法。     

我国青贮玉米的研究现状及市场前景

青贮玉米作为饲料玉米既能大幅度地提高饲料产量，同时具有较高的营养价值，在国民经济和人民生活中占有越来越重要的地位。在借鉴欧美等发达国家对青贮玉米研究成果的基础上，分析了我国发展青贮玉米的优势和潜力，提出了青贮玉米的育种策略、育种目标和主要用于家畜饲养业的有效利用途径。     

Reach Envelope of Human Extremities

Significant attention in recent years has been given to obtain a better understanding of human joint ranges, measurement, and functionality, especially in conjunction with commands issued by the central nervous system. While researchers have studied motor commands needed to drive a limb to follow a path trajectory, various computer algorithms have been reported that provide adequate analysis of limb modeling and motion. This paper uses a rigorous mathematical formulation to model human limbs, understand their reach envelope, delineate barriers therein where a trajectory becomes difficult to control, and help visualize these barriers. Workspaces of a typical forearm with 9 degrees of freedom, a typical finger modeled as a 4-degree-of-freedom system, and a lower extremity with 4 degrees of freedom are discussed. The results show that using the proposed formulation, joint limits play an important role in distinguishing the barriers.     

Homozygous HOXA1 mutations disrupt human brainstem, inner ear, cardiovascular and cognitive development

We identified homozygous truncating mutations in HOXA1 in three genetically isolated human populations. The resulting phenotype includes horizontal gaze abnormalities, deafness, facial weakness, hypoventilation, vascular malformations of the internal carotid arteries and cardiac outflow tract, mental retardation and autism spectrum disorder. This is the first report to our knowledge of viable homozygous truncating mutations in any human HOX gene and of a mendelian disorder resulting from mutations in a human HOX gene critical for development of the central nervous system.     

醌类化合物修饰电极催化强化酸性红B电解脱色研究

考察了4种结构相似的醌类化合物(AQ,1,5-AQ,1,8-AQ和1,4,5,8-AQ)修饰电极对酸性红B电解脱色的催化强化作用。结果表明,酸性红B电解脱色的最佳条件:电解时间为4h,溶液pH值为3,电流密度为16mA/cm2;在此实验条件下,4种醌类化合物修饰电极提高酸性红B电解脱色效率为1.05~1.19倍,其大小顺序为1,8-AQ>1,5-AQ>AQ>1,4,5,8-AQ;通过测定1,8-AQ修饰电极电解酸性红B的脱色过程的UV谱图,发现其并未改变酸性红B脱色降解路径。     

浅议大跨度连续梁悬臂浇注的施工

随着大跨度连续梁的普及，混凝土悬臂浇注技术日趋成熟。文章较全面地介绍了挂篮施工的重点工序，包括墩项段O^n块、中间段、合拢段施工，并对挂篮施工中的几个重要参数的控制做了简要阐述。     

电子废物处置的主体责任

为了有效解决电子废物处置难题,需合理地划分主体之间的责任。在电子废物处置体系中,"主体的责任划分"直接关系到电子产品厂商、销售商以及消费者的利益。应在坚持"利益分配"理论和"产品受益者与义务承担者一致"原则的前提下,采用细分各主体之间责任的方法加以解决。在电子废物处置过程中,生产者具有预防责任、网点建设责任,消费者须承担绿色消费、积极选购环境友好产品的责任,政府有政策上鼓励支持回收处理企业的义务和制订相关法规标准与监管的责任。     

信息管理与信息资源管理及知识管理的关系

分别对IM(信息管理)、IRM(信息资源管理)、KM(知识管理)的概念及内涵进行了阐述，比较了三者的联系与区别，进而就三者的关系进行了探讨。