基于遗传算法的人工神经网络优化设计

提出遗传算法新的编码方案，用于全局优化神经网络拓扑结构和权值参数，解决了神经网络拓扑结构的难确定性和权值训练的长时性问题，并且在遗传操作中采用自适应代沟的替代策略，改善其求解效率，获得了良好的优化结果。通过仿真实验显示了该算法的快速性和有效性。     

基于嵌入式操作系统的应用软件设计

介绍了如何在嵌入式的实时多任务操作系统上设计应用软件，给出了实现多任务操作的具体步骤，并用该方法进行了热敏打印机应用软件的设计，从而提高了应用软件的实时性，增强了其可移植性，缩短了软件开发周期。     

入侵检测技术原理剖析及其应用实例

从入侵检测技术的基本原理出发，描述了入侵检测系统(IDS)的组成，论述了IDS的主要功能，并给出了它在网络系统中的实际应用方法。     

纳米Ni-Al2O3金属陶瓷粉末热压致密化过程

采用粒径小于100 nm,金属Ni包覆Al2O3得到的纳米Ni-Al2O3化学包覆粉为原料,将Ni含量不同的几种纳米Ni-Al2O3(粒径约为38 nm)金属陶瓷复合粉末首先采取模压成形方式压制成直径为30 mm的圆片,然后放在石墨模具中在热压机上进行热压,研究热压(HP)温度和Ni含量对致密化过程的影响.研究结果表明:当Ni含量为20%和热压温度为1 400℃时,制品密度和显微硬度最高;在1 400℃热压2 h,Al2O3-Ni2O烧结体的相对密度最高,达到99.6%,Al2O3-Ni5的显微硬度HV达到1 690.9kg/mm2;随着Ni含量的增加,制品硬度降低,当Ni含量超过20%时,硬度降低非常显著,Ni含量为50%时HV降至1 316.7 kg/mm2;烧结体中Ni颗粒均匀分布在基体中,且大部分位于三角晶界处,有效地阻止了Al2O3基体晶粒的长大.     

利用网络、多媒体手段建构高级英语教学模式

着重研究、分析如何利用网络等多媒体手段进行综合英语的课件制作和教学，并通过调查分析说明根据教学实际，在建构主义理论指导下利用网络等多媒体手段进行综合英语教学有利于培养出兼备语言能力和言语能力的人才。     

侦查中强制到案措施的不足与整合

在我国的侦查中强制侦查到案措施包括：拘传、拘留、逮捕，立法的不足在于这样三个方面，第一，没有明确强制到案措施与羁押的分离，混淆了羁押防范措施与强制到案措施之间的关系；第二，拘留所附带的关押期限太长，而使其变成一种准羁押的诉讼防范措施；第三，没有明确公安机关的无证强制到案措施，不能满足侦查实践的需要，从而导致本属警察法所规范的留置盘问措施在侦查中滥用，成为刑事诉讼法规定的强制到案措施体系之外，被最为广泛运用的强制到案措施。要解决这些问题，需要：第一，建立羁押与强制到案措施分离的刑事诉讼强制措施体系；第二，缩短拘留所附带的监禁期限；第三，整合留置盘问与其他强制到案措施之间的关系，在刑事诉讼法中明确将留置盘问作为紧急情形下的侦查强制到案措施。     

略论唐朝治桂政策实施的背景

唐朝以前，桂东地区的封建庄园经济。土地私有制已有所发展，而桂西地区大体上仍停留在前封建制阶段，社会经济相当落后，尤其是农业经济与桂东有着相当大的差距。唐朝统治者审时度势，根据当时广西社会发展的变化，调整了其治桂政策，在桂东地区设立正州正县，而在桂西地区则继续沿袭前代的的羁縻政策。     

Early Cambrian protoconodonts and conodont-like fossils from China: Taxonomic revisions and stratigraphic implications

Tooth likephosphaticprotoconodontsand“con odont likefossils”arecharacteristiccomponentsoftheEarlyCambriansmallshellyfossils (SSF )withaworldwidedistribution .Theyarerepresentedexclu sivelybyisolatedscleritesandareoften presentinaceticacid etchedresiduesfromLowerCambriancar bonates .SincethefirstreportofProtohertzinaMis sarzhevsky 1973fromthebasalCambrianoftheYangtzePlatformin 1977[1] ,andalongwithenthusi asticresearchactivitiesonthesmallshellyfossilsandcandidatesectionsforaglobalPrecamb…     

Symmetrical directional cloning: An efficient method to prepare hairpin RNA interference constructs

RNA interference (RNAi) is a loss-of-function approach by which double-stranded RNA (dsRNA) initiates degradation of homologous mRNAs in a sequence specific manner. The dsRNA molecules can be produced in vitro or in vivo, and can be introduced to cells in a number of ways. Here we report a more efficient method for the cloning of inverted repeat DNA fragments into expression vectors that can be transcribed into effective dsRNA molecules in vivo or in vitro. This method, named Symmetrical Directional Cloning (SDC), takes the advantage of compatible non-palindromic restriction enezyme sites, which allow one to directionally clone a single PCR product in both the sense and antisense orientations together into a vector. SDC allows for the directional cloning of inverted repeats using a single PCR product; it requires only one cut site on each side of the loop. Hence this method is more cost effective and less time-consuming. At least 21 commercially available restriction endonucleases can be used as cloning sites for the SDC method. The efficacy of dsRNA expression vectors prepared by SDC has been demonstrated by targeting a negative regulator of the signaling pathway mediating the response of cells to phytohormone, gibberellins (GA), in the aleurone cells.     

Detection of the translational oscillations of the Earth''''s solid inner core based on the international superconducting gravimeter observations

Before about 100 years, the layered structures of the Earths body and the existence of the liquid core had been found, then the solid inner core and detailed structures in the interior of the Earth are demonstrated, it proves that the satisfied achievements had been obtained in recogni-tion of the Earths interior structures. In recent years, with the increasing requirements of the basic sciences and space techniques to geodynamics of the Earths interior, the theoretical study and practical de…