Statistical Approach Based on POS for Chinese Time Word Disambiguity

Segmentation Ambiguity is an important factor influencing accuracy of Chinese auto-segmentation system. Time words include expressions both indicating exact time positions and those scattering in a treriod of time. On the foundations of modern Chinese corpus processing principles and certain type time word segmentation ambiguity, this paper proposes problem, a statistical language model and corresponding approach based on maximum likelihood to solve the ambiguous and it reaches a 90% accuracy which shows the effectiveness of the algorithm.     

A Statistical Model for Multi-paths Distribution under Mobile Environment

This paper presents the distribution function of multi paths by use of two stochastic processes. The first process which is a Poisson process presents the paths occurring, and the second one which is an exponential process presents the paths standing. If the maximal paths are infinite, the Poisson distribution can be concluded. The notable error exists between the Poisson model and the measurement result. So the Poisson model is modified depending on the fact that the arrival rate decreases and the standing time get longer with the increase of arrived paths. The numeric results verify the consistence between the modified model and measurement.     

基于SPSS的日照市小麦产量年景预测模型

摘 要：根据1979-2008年日照市气象资料和小麦产量资料,运用数理统计的方法进行筛选,采用SPSS统计软件对小麦产量有影响的气候因子进行相关性分析,筛选出2个相关性较高的因子,建立多元回归模型。并且对历年产量进行检验,计算表明小麦预测产量与实际产量拟合率较高,预测精度最高为100%,最低为82%,平均精度为90%。预测模型具有较高的信度和实用性,可作为小麦产量定量预报的有效工具之一,为农业生产管理和农产品流通贸易提供决策依据。     

基于R语言的冬小麦品种稳定性分析

旨在确定适宜的品种稳定性分析参数及其计算方法。利用冬小麦区域试验数据,通过R语言计算了14个稳定性参数,并采用秩相关和主成分分析,研究了参数的功效和相关性。结果表明,R语言可以方便、灵活的计算各类参数;相关分析表明,PCOA和产量极显著正相关,CV和Bi极显著正相关,Sigma.square和Si、Si2、Si3、ASV极显著正相关,ASV和Si6极显著正相关;主成分分析表明,14个稳定性参数可以分为3组,组1包含Bi,与多数参数负相关,与产量相关性不显著,组2包含YIELD、Pi、YSI、CV和PCOA,与产量显著正相关,组3包含Sigma.square、S.square、ASV、Si、Si2、Si3、Wi、Si6,与产量相关性不显著。研究表明,ASV和Si与其他参数间的相关性较好,PCOA模型能够同时评价品种产量及其稳定性,三者是单变量参数模型的有益补充。     

基于python语言的冬小麦品种稳定性分析

旨在挑选出适宜的冬小麦品种稳定性分析参数及其计算方法。利用冬小麦实验数据,首次通过python语言计算了5个稳定性参数,并采用秩相关性和主成分分析,研究了参数的相关性。结果表明,python语言可以方便、灵活的计算各类参数,计算相关性和进行主成分分析。相关分析表明,PCOA和产量显著正相关,CV和Bi和产量极显著负相关。研究表明,PCOA模型能够同时评价品种产量及其稳定性。多元统计方法是单变量参数模型的有益补充。     

A Statistical Model for Mobile Satellite Channel and Digital Transmission Analysis

The paper deals with the statistical characterization of mobile satellite channel, and introduces a statistical channel model-the Shadowing Rician Fading model for frequency nonselective land mobile satellite channel. The parameters contained in the model are given by means of trial and error. Based on the model, the BER(Bit Error Ratio)performance is analyzed for narrow-band modulation and wide-band spread -spectrum modulation of coherent PSK (Phase Shift Keying) signals. The results show that the multipath and fading phenomenon in the channels worsens the system bit error performance, while the use of wide band spread spectrum modulation can improve it efficiently. In addition, an analytical expression is derived for the irreducible probability of bit error of coherent PSK signals due to phase variations caused by fading and shadowing. At last, the numerical results are obtained and discussed.     

A Muti-Objective Network Planning Model for Project

Based on the network planning model developed by the author for an overhaul project of a rolling mill production line in a heavy steel plant, an new multiobjective network planning model is proposed in this paper. The formulations of network time parameters are derived. The optimization problem of multiobjective network planning is also discussed. And it has been found out that the fractional single-objctive network is only one of the cases in this model.     

基于作物模型的冬小麦气候适宜度算法研究

为了定量分析气象条件对作物生长的综合影响,利用WOFOST作物生长模型分析冬小麦各生育期的气候适宜度。通过对华北地区3个代表站点2007—2009年生长季的冬小麦进行生长模拟,并选取2007—2008年生长季的模拟结果作为标准,以其他年份同一生育期的生物量与标准的比值作为该生育期的气候适宜度,并与统计方法的结果进行对比。结果表明,用作物模型计算得到的适宜度与产量之间呈现出较好的正相关性,决定系数为0.603,且通过了0.05置信水平检验,可用该方法对冬小麦气候适宜度进行估算。     

Requirement Model Based on UML 2.0 for Equipment MIS

This paper introduces the modeling of Unified Modeling Language with use case diagram and active diagram based on Rational Unified Process for Equipment Managemet Information System. It discusses the modeling mechanism and character of UML and develops the Computer Equipment management Information System Based Web using Rational Rose of UML CASE Tool. First, it is describe the authors how to analyze the structure of organize and build the model of structure organize. Second, they abstract the workflow of main operation in organize and build workflow model by active diagram. Finally, they abstract actor, use case with case diagram and finish the requirement model.     

Information Organization Technique Based on Entity Linkage

In the course of Information Engineering of enterprises, because of the existence of unplanned system and information verification, enterprises have to change primary data model of the information system. But existing information organizing technique and theory can not solve the influence that unplanned system and information verification impact on preserve linkage and preserve dependency of the data model, and this has great effect on the process of Information Engineering. Aiming at solving the problem mentioned above, on the basis of Relation Data Theory and making use of E-R model, the paper puts forward an information organization technique based on entity linkage with well expandability and flexibility. The technique can adapt to information verification and adjustment of enterprise.     

基于Kano-QFD模型的家庭阳台微型水培装置设计

家庭阳台水培以观赏性强、整洁方便、绿色安全等特点拥有广阔的市场前景,以家庭阳台水培为设计目的、以用户需求为导向的家庭水培装置能够有效满足当前的市场需求。行为地图法与Kano模型的结合能够准确收集用户需求及重要度,QFD质量屋模型可将产品质量要素按照用户需求重要程度进行排序。据此进行方案优化,指导完成以用户需求为导向的装置设计。装置具有空间集约、造型美观、便于移动及固定、有效减轻水培液浪费污染、电线收纳便捷等优点,更适用于家庭水培。同时,新材料应用等也将成为装置未来提升的方向。     

玉米波杂饮料自然发酵工艺研究

以玉米粉为原料,在单因素试验的基础上,通过正交试验优化玉米波杂饮料的制作工艺。结果表明,玉米波杂饮料自然发酵的最佳工艺条件为:酶制剂添加量3.0%,煮制时间50 min,第2次发酵时间12 h,发酵温度35℃。此条件下制得的玉米波杂饮料总糖含量6.43 g/L,总酸含量2.73%,酒精含量2.60%(V/V),感官品质得分95分,饮料呈米黄色,泡沫洁白细腻,酒香味浓郁,有愉快的偏酸味和较强的杀口感。     

基于比较转录组的水稻苗期耐冷相关基因BGIOSGA032296 TALEN基因组编辑技术构建

为了挖掘水稻苗期耐冷基因,基于比较转录组分析,参考公共数据库中的基因序列信息设计靶位点,对冷胁迫条件下东乡野生稻苗期下调表达耐冷相关基因BGIOSGA032296进行TALEN基因组编辑技术构建,克隆酶切鉴定和序列比对结果表明,BGIOSGA032296 TALEN敲除植物表达载体1301TALEN-032296构建成功,利用农杆菌介导法将TALEN敲除植物表达载体1301TALEN-032296转入水稻受体品种TP309,获得了17株转基因水稻植株,经潮霉素抗性标记基因和Fok I基因特异引物PCR检测,表明获得的转基因植株皆为携带1301TALEN-032296的阳性植株。该研究为水稻BGIOSGA032296基因后续耐冷表型鉴定奠定了前期基础。     

基于Open L-System的植物生长模拟研究

为了真实地模拟植物生长发育过程,引入了Open L-System建模理论。在植物形态发生模型的基础上,根据植物生长时其形态特征及环境之间的相互作用,构建了综合考虑植物生长发育与环境影响的虚拟植物模型。     

棉花双隐性核不育系杂交制种高产栽培技术研究

为了探索其制种高产栽培技术,充分挖掘该系列不育系的制种产量潜力,采用四元二次正交旋转回归设计,研究了氮（N）、磷（P）、钾（K）及密度对棉花双隐性核不育系2095-2A杂交制产量的综合效应。试验结果表明：（1）氮肥、密度、磷肥三因素对产量存在显著的影响,氮肥>密度>磷肥>钾肥;（2）最佳高产方案为：N 293.56~332.76 kg/hm2、P2O5 141.05~172.84 kg/hm2、K2O 130.05~188.99 kg/hm2、密度为2.6426~2.9382万株/hm2;（3）K和单铃重的相关系数为0.518,制种生产中应重视钾肥的施用量以提高种子质量;（4）公顷铃数与籽棉产量的相关性达极显著,因此,应把提高公顷铃数作为提高制种产量的主攻方向。     

Recommending Trust Model Based on Behavior for Distributed CA in MANET

Mobile Ad Hoc Networks(MANET) is a multi-ho Pand instant self-organized autonomous system of a collection of wireless mobile nodes.A multi-domain full-distributed Certification Authorities system model was proposed founding on its trait of territorial communication.The thesis researched this model and proposes a new model for the interoperability between virtual Certification Authorities named extended recommending trust model based on behavior.It can improve the system's security,retractility and robustness by dynamic trust chain maintenance with feedback information in the actual course.     

Fast Algorithm of Loads Equalization for Distribution Networks Based on Partition-hierarchical Model

Along with enlargement of scope of distribution, algorithms of reconfiguration for distribution networks become difficult to satisfy real-time require of engineering applications. This paper provides a new algorithm a fast algorithm based on partition-hierarchical model. It is found that partition of loads is relation of the smallest load of vertex that is bigger than average and the biggest load of vertex that is smaller than average. The method reduces the numbers of switches combination by searching smallest load of vertex that is bigger than average and the biggest load of vertex that is smaller than average and realize a fast algorithm of the loads global optimal equalization for distribution networks by transferring the loads. Results of test show that the method presented is applicable and efficient.     

应用近红外光谱技术分析稻米蛋白质含量

以稻谷、米粒、米粉3种形态的样品，应用近红外光谱技术(NIRS)和偏最小二阶乘法(PLS)，建立了6个稻米蛋白质含量近红外光谱数学模型，并对模型预测结果的准确性进行了评价。结果表明，糙米蛋白质含量的稻谷、糙米粒和糙米粉近红外光谱预测模型校正决定系数(R_C²)分别为0.893、0.971和0.987，校正标准差(RMSEC)分别为0.507、0.259和0.183；精米蛋白质含量的稻谷、精米粒和精米粉近红外光谱预测模型R_C²分别为0.897、0.984和0.986，RMSEC分别为0.497、0.186和0.190。模型内部交叉验证分析表明，预测糙米蛋白含量的稻谷、糙米粒和糙米粉模型内部交叉验证决定系数(R_CV²)分别为0.865、0.962和0.984，内部验证标准差(RMSECV)分别为0.557、0.290和0.205；预测精米蛋白含量的稻谷、精米粒和精米粉的模型R_CV²分别为0.845、0.951和0.979，RMSECV分别为0.594、0.316和0.233。模型外部验证分析表明，预测糙米蛋白含量的稻谷、糙米粒和糙米粉近红外光谱模型外部验证决定系数(R_V²)分别为0.683、0.801和0.939，外部验证标准差(RMSEV)为0.962、0.799和0.434；预测精米蛋白含量的稻谷、精米粒和精米粉近红外光谱的模型R_V²分别为0.673、0.921和0.959，RMSEV为0.976、0.513和0.344。用米粉建立的近红外光谱预模型准确性最高，米粒次之，基于稻谷的预测模型准确性相对较低；内部交叉验证和外部验证表明，近红外光谱分析技术与化学分析方法一致性较好，且能保证样品的完整性，在水稻优质育种和稻米品质分析中具有广泛的应用价值。     

基于R语言的GGE双标图在玉米品种区域试验中的应用

为了鉴定高产稳产玉米新品种以及为玉米高产栽培提供理论依据,通过基于R语言的GGE双标图法分析了10个玉米新组合在四川省甘孜州高海拔地区生态条件下的丰产、稳产性和适应性,同时分析了5个试验点对参试组合的辨别力和代表性。结果表明：‘康玉试0903’和CH327 2个组合高产且稳产;而SZ694较高产,但稳产性稍差,在海螺沟试验点有特殊适应性。综合各试验点的区分力和代表性,丹巴、九龙和海螺沟较好：九龙和海螺沟的区分能力强,丹巴试验点的代表性最佳。