沃尔什函数复制理论与正交用表

本文首次将沃尔什函数复制理论引入到正交试验技术的数学工具－正交试验用表中，用复制理论复制生成了正交用表，这是设计制作正交用表的另一新的有效途径，这不仅开拓了沃尔什函数复制理论应用的新领域，而且，也改变了半个多世纪来只能由数学家们设计和制作正交试验用表的局面，同时也将为正交试验方法的推广和应用产生积极的促进作用。     

东芝e-STUDIO2500c彩色数码复合机的故障及解决方法

分析了东芝e-STUDIO2500c彩色数码复合机使用中出现的故障,并提出了相应的解决方法。     

会计信息失真原因辨析及防范措施探讨

针对当前一些单位会计信息质量不高，甚至伙同审计部门联合作假的现象，从客观实际出发分析会计信息失真的各种原因，并提出消灭会计造假、提高会计信息质量的具体措施。     

疑古是解决历史谜团的一把钥匙

廿世纪以古史辨派为代表的疑古思潮有功也有过，应一分为二看待；疑古思潮应该走出，疑古精神必须发扬；以“前四史”为例，可信的正史也有许多舛误之处；“乡”、“亭”及“三老”考证及推断，最能显示疑古在历史研究方面的推动作用；疑古必有据，为疑而疑，势必走向反面，就会得出一些遗笑大方的结论     

Study of the Twist Distribution inside Rotor

In this paper, the kinematics and dynamics of the yarn on the navel were studied. A series of twist distribution curves were obtained by numerical calculation. The results show that the navel is essential to the false twist development on the yarn arm. The fiber surface properties, yarn linear density, rotor speed and diameter, navel design are all the parameters having remarkable effects on the false twist level inside rotor.     

现阶段国有企业操纵损益的动因分析及危害研究

企业操纵损益的动因分析入手，提出抑制或杜绝操纵损益的方法不是会计本身所能做到的，须从更为广阔的领域，采用系统综合治理的方法方为有效。     

"绉嬬懢渚涜瘝"鑰冭京鈥斺€斿吋涓庨┈鑷瘏鍏堢敓鍟嗘Ψ

绉嬬懢姝诲墠娌℃湁渚涜瘝鏄鐟惧啢妗堢殑涓€涓劍鐐?鏃惰繃鐧惧勾,椹嚜姣呭厛鐢熷嵈璁や负绉嬬懢鐣欐湁渚涜瘝.閫氳繃鑰冨療鍙叉枡,椹嚜姣呭厛鐢熺殑鍥涚偣鐞嗙敱鏄€煎緱鍟嗘Ψ鐨?     

栗园套种紫穗槐的生态经济效益分析

在辽宁丹东栗园进行了紫穗槐套种，并对其生态经济效益进行了研究，结果表明：栗园套种紫穗槐可以明显提高土壤含氮量，三年中提高幅度为17．3％;明显减少地表土壤流失，三年中减少幅度为38．9％；对地表径流有明显的降低作用，明显地改善了栗园的生态环境．     

分布式数据库同步更新的实现方法

把分支机构的数据库作为出版者和分发者,把上级中心的数据库作为订阅者,首先在分发者数据库中对表建立快照代理、日志阅读代理、分发代理．和存储过程的复制事物,并在数据库中记录同步状态信息,然后分发者连接出版者,阅读出版物的事务日志,搜索出带有复制标志的INSERT、UPDATE、DELETE语句和其他更新事务提交给订阅者．当分支机构数据发生更新,日志读取代理即时将更新信息推到上级单位中心的数据库中,实现分发者和订阅者数据库数据两者数据的一致性,从而实现分布式数据库数据的同步更新。     

Integration and inheritance stability of foreignBt toxin gene in the bivalent insect-resistant transgenic cotton plants

Genetic and expressional stability of Bt toxin gene is crucial for the breeding of insect-resistant transgenic cotton varieties and their commercialization. Genomic Southern blot analysis of R₃, R₄ and R₅ generations of bivalent transgenic insect-resistant cotton plants was done in order to determine the integration, the copy number and the inheritance stability of Bt toxin gene in the transgenic cotton plants. The results indicated that there was a 4.7 kb positive band in the Southern blot when the genomic DNA of the bivalent transgenic insect-resistant cotton plants and the positive control (the plasmid) were digested with HindⅢ respectively. This result proved that the Bt toxin gene had been integrated into the genome of the cotton in full length. There is only one XhoⅠ restriction site in the Bt toxin gene. Southern blot analysis indicated that many copies of Bt toxin gene had been integrated into the genome of the cotton when the genomic DNA of transgenic plants was digested with XhoⅠ. Among them, there were four copies (about 17.7, 8, 5.5 and 4.7 kb in size) existing in all the tested plants of ₃, R₄ and R₅ generations. The preliminary conclusion was that there were more than four copies of Bt toxin gene integrated into the genome of the cotton, among them, more than one copy can express and inherit steadily. This result provides a scientific basis for the breeding of the bivalent insect-resis- tant transgenic cotton plants and its commercialization.