Method for Dynamic Tasks Allocation in Automatic Shop Based-on the Idea of AM

A distributed scheduling method in a networked manufacturing enviroment is given. A allocation algorithm for dynamic tasks in distributed systems based on LAN information in factories is introduced. The design goal is to obtain some better comprehensive targets, such as cost price, load balance, waiting time and efficient of systems.     

Architecture of Networked Manufacturing Based on Supply Chain

The combinationof networked manufacturing and supply chain can integrate the design resource, intelligenceresource and manufacturing resource more efficaciously. Based on the compareand analysisof characteristics of the networked manufacturing and supply chain, the mode of networked manufacturing based on supply chain is brought forward, it combines and integrates supply chain and networked manufacturing to attain the effects of the complementarityof the dominanceof each other, and makes the reality of networked manufacturing more convenience, shortcutand efficiency. Based on the solution, the architecture and an operation mode of networked manufacturing based on supply chain are put forward. Finally, the applicationof networked manufacturing based on supply chain to ceramics industry is studied. Through the implementof the networked manufacturing which is based on the Supply chain dynamic allianceof ceramics industry, the process of from gaining demand information to putting products in the market is finished.     

A New Distributed Computing Platform-Jini and Its Application

With the development of network technology distributed computing has become more and more prevalent. Only that kind of distributed platforms which have the attributes of platform independence, dynamic, robustness, security and convenience are what users need. This article mainly discusses a distributed computing platform based on Java Technology--Jini, introduces its advantages compared to traditional distributed systems.Its basic principles and key concepts, system structures, programming patterns and protocols, the services it provides and service procedures are also proposed. In the end a introduction of its application on digital home net is given.     

An improved HEED clustering algorithm for Wireless Sensor Network

In wireless sensor network, routing protocols which based on clustering have the advantages of energy consumption, topology management and data fusion. The HEED protocol, which generates cluster heads based on distributed algorithm, drives up the rate of clustering and creates well distributed cluster heads. However, it does not consider the mobility of nodes in the network. When the distance between neighbor nodes has changed, the AMRP method which decides the node belongs to different cluster heads would cause problems such as high energy consumption, short lifetime of network and so on. Responding to these problems, the paper proposes the S HEED, a clustering algorithm based on stability, which chooses the stability as a parameter of nodes when choosing a cluster head. With S HEED algorithm, the high energy consumption problem among cluster nodes and cluster heads caused by the mobility is tackled. The simulation experiment demonstrates that the S HEED algorithm lower the energy consumption of cluster heads and prolongs the network lifetime.     

Multi-mode Running Architecture of Networked Manufacturing Platform and Its Implementation Technology

Adopting organizational mode of networked manufacturing platform is an effective way of improving enterprise's condition to implement networked manufacturing. This kind of mode can make the architecture of enterprise collaborative work change from complex network architecture to a simple linear architecture. Based on the organizational mode, a Multi-mode running architecture of networked manufacturing platform was proposed in this paper. The Multi-mode can make networked manufacturing platform to fit different requirement of enterprises and industry. Integrated technology and related standardization technology were studied on the basis of this Multi-mode architecture. It can constitute the technology and implementation basis for the networked manufacturing platform's running.     

Key Technologies and Application Study on Networked Roadway Design Project Management

Aiming at the urgent requirements of project management from roadway design enterprises, key technologies and application of networked roadway design project management are studied. First, requirements analysis and a general technology scheme are proposed for networked roadway design project management. Next, key technologies are studied systematically, including workflow analysis and improvement, networked and dynamic project monitoring and coordinating, and integrated project information management. Based on the key technologies, an application system of networked roadway design project management is developed and applied in some real projects of roadway engineering design. A case study is presented to illustrate the management process based on the networked project management system. The engineering applications show that the system can effectively improve the management efficiency, reasonably configure and optimize design resource, monitor and coordinate project plan and schedule, and accurately evaluate the performance of design team members.     

The compensation method for the random time-delay of the feedbackchannel and the forward channel in the networked control system

An improved predictive control method is presented to compensate the random time delay in the networked control system. The feedback time delay is compensated by predictive controller based on softened increment input strategy. The forward time delay is unknown for controller, so an extra feedback loop is added to compensate the delay by estimating the error between the actual control signal effected on plant and the output of controller in historical moment. For the controlled system with unknown or slowly varying parameters, the networked feedback correction algorithm is discussed based on a modified recursive least-squares identi cation algorithm. The system stability is analyzed and the simulation results show that the time delay in the networked control system can be accurately compensated. The excellent network performance is ensured with this strategy.     

A process-oriented and stochastic simulation model for asparagus spear growth and yield

To obtain a better understanding of the factors affecting asparagus spear growth and yield, a process-oriented and stochastic model for asparagus (Asparagus officinalis L.) grown under soil ridges was developed and tested. This model describes a population of asparagus plants with a binomial distributed bud cluster number per plant. Each bud cluster starts to grow after exposure to an exponential distributed temperature sum. The length growth response of spears, which is mainly dependent on soil temperature and spear length, is affected by the soluble carbohydrate (CHO) concentration in the storage root system and the temperature gradient between the spear tip and the rhizome. The spear growth rate is assumed to be normally distributed, while a stochastic dependency to the required temperature sum for bud break is assumed. For each bud cluster, a broadly varied apical dominance relation between successive spears is described by an exponential distributed temperature sum for spear length growth induction. After removal of the dominating spear, the required temperature sum decreases exponentially. The time progression of spear diameter is a function of spear generation number within a bud cluster and the mean temperature during spear growth induction and can be used to derive the spear fresh weight. The change of soluble CHO concentrations in the storage root system is derived from maintenance and growth respiration requirements.Some of the model parameters are derived from independent measurements of spear growth. Regarding the tremendous variability of daily yields, the model performed well in the prediction of daily spear number, diameter and yield over the whole harvest season across two production sites with various soil temperatures induced by different types of ridge covering.The effects of soluble CHO concentration and soil temperature gradient on spear growth rate are regarded as preliminary and should be tested in further experiments. Due to the apical dominance relation between spears, asparagus is subject to endogenous rhythmic growth, which invalidates simple statistical yield forecast approaches. In its current state, our yield forecast model is well suited to test the impact of various plant traits on asparagus yield, and thus to guide early selection in crop improvement projects. Finally, the current model could be used to derive easier to handle yet physiological sound yield models to be useful for field-scale applications.     

Networked Optimal Cutting-stock System Based on Web Service

With the analysis of the problem in traditional optimal cutting-stock technology , this paper sets forth the significance of networked optimal cutting-stock . After that , a new kind of networked optimal cutting-stock system, based on Web Service technology , is presented .Then the constructing process , architecture and mechanism of this system are expatiated respectively. Centered onWeb Service , this system combines the networked multi-software optimal calculating model with cutting-stock system , by building updifferent granularity service and supporting multilayer service invocation .According to experiment , the system this paper discusses can effectively improve comprehensive optimal efficiency of cutting-stock.     

Genetic divergence in parental genotypes and its relation with heterosis, F1 performance and general combining ability (GCA) in opium poppy (Papaver somniferum L.)

Summary Genetic divergence in 110 population (20 parents and 90 F₁ hybrids) of opium poppy was studied by multivariate analysis. All the entries were grouped in 14 clusters. Out of 20 parents, ten were accumulated in one cluster and rest 10 distributed over seven clusters. Estimates of cluster distance showed that maximum intra-cluster distance was in -cluster IX (25.62) followed by cluster I (22.41), V (22.23) and IV (21.06). The inter cluster distances varied from 16.62 (between cluster XII and XIV) to 195.10 (between cluster IV and IX). The cluster analysis indicated substantial diversity among the parental genotypes, which had the potential to release considerable variation in their crosses. The first four principal components (PCs) with eigen values >1 accounted for 68% of variation among the population. The first and second components could account for 29 and 20% of the total morphological and alkaloidal variations, respectively. The PC1 was closely related to yield and yield related traits. The characters contributing greatest positive weight on PC1 were opium yield, plant height, stem diameter, capsule weight/plant and seed yield/plant. The possibilities of relationship between genetic divergence, F₁ performance, heterosis and GCA of parents have been explored.     

我国部分玉米自交系遗传关系和遗传结构解析

玉米自交系遗传关系和遗传结构的解析,对自交系类群划分和杂交组配具有重要的指导意义。本文选用玉米基因组的112个SSR标记对我国97个玉米自交系进行遗传关系和遗传结构分析,并评价了遗传距离聚类和模型聚类方法在玉米自交系遗传关系研究中的应用价值。结果表明,模型聚类方法更适于玉米自交系的遗传关系研究。解析自交系的遗传基础发现,各类群中均有大量自交系含有其他类群的遗传成分。根据模型聚类结果,97个自交系被划分为PB、Reid、塘四平头和旅大红骨4个类群。Reid群与旅大红骨群的遗传关系最近,与塘四平头群遗传关系最远。为了实现杂种优势模式的简化,4个类群可被简化为3大种质类群[A(旅大红骨群与Reid群)、B(PB群)、C(塘四平头群)],或2大种质类群[A(旅大红骨群、Reid群、PB群)、B(塘四平头群)]。研究结果为自交系的改良和利用及杂种优势模式确定提供了理论基础。     

喀斯特植物叶片草酸钙与抗坏血酸的相关性分析

草酸钙晶体是一种典型的植物生物矿物,在植物的生长发育和抗逆性方面起着重要的作用。本研究以贵州喀斯特生境中适生草本、灌木和乔木植物为材料,通过光学显微成像观察草酸钙晶体的形态和分布特征。同时,分析抗坏血酸和草酸钙含量之间的相关性,探究抗坏血酸与草酸钙之间的关系。结果表明,植物叶片中草酸钙主要有簇晶和棱晶两种形态,簇晶主要分布在叶肉组织中,而棱晶主要分布在叶脉组织中。在草本和灌木物种中,草酸钙含量与抗坏血酸和脱氢抗坏血酸均表现为正相关关系;然而,在乔木物种中,草酸钙含量与抗坏血酸含量正相关,与脱氢抗坏血酸含量相关性不明显。研究发现,贵州喀斯特适生植物叶片主要以叶肉簇晶和叶脉棱晶的方式富集草酸钙晶体,植物抗坏血酸和草酸钙之间表现为正相关,这为进一步研究草酸钙晶体的合成和生物学功能提供了科学数据。     

应用ISSR分子标记分析裸大麦的遗传多样性

为研究裸大麦的遗传多样性,利用筛选得到的16条ISSR引物对收集的国内外102份裸大麦材料和1份皮大麦材料进行了遗传多样性分析,并分析了裸大麦地理分布与遗传多样性的关系。结果表明,16条ISSR引物共扩增出133条条带,大小在100~2000bp。不同引物扩增的条带数在3?15条,平均每条引物扩增出8.31条,多态性条带为113条,多态性的平均百分率为85.1%,103份材料的遗传相似系数(GS)在0.2817~6,提示裸大麦的遗传多样性较高。利用NTsys 2.1软件进行聚类分析,103份材料分为四大类,第一大类只分布在中国青海,第二大类分布在亚洲、欧洲、北美洲和非洲,第三大类分布在亚洲、北美洲和南美洲,第四大类仅分布在亚洲和北美洲,表明亚洲,尤其中国地区具有较高的遗传多样性。裸大麦的遗传多样性与其地理来源的相关性,为进一步研究裸大麦尤其是青稞起源提供了参考。     

Design Approach to the Total Automation Systems of City Light Rail Transit

The design approach to the total automation systems of city light rail transit (LRT) is discussed, according to the specialty of city transport systems. Based on the operation modes and basic functions of LRT, the scheme of automation systems by using of the networked PLC systems is introduced. The general analysis for each sub automation systems is given, and the redundancy and fault tolerant function are emphasized.     

Regional development platforms as incubators of business ecosystems. Case study: The Lahti urban region,Finland

This paper combines three major concepts: regional development platforms, business ecosystems and competitiveness policy. The framework of business and innovation ecosystems is gaining ground in the discussion of competitiveness and innovation policy. The framework challenges competitiveness and innovation policies because ecosystems are seen as highly self-organising and self-renewing systems. Is there still room for innovation and competitiveness policies? This paper focuses on ecosystem-facilitating competitiveness policy at the regional level and argues that the emergence, growth and renewal of business ecosystems can be facilitated by a competitiveness policy focused on related variety platforms embedded in a regional innovation ecosystem. As a case illustrating this point, we present the strategic themes and development platforms in the Lahti urban region, which are constructed following the ecosystem theory. This paper contributes to the previous literature on regional development and innovation policy by presenting a policy framework for a modern competitiveness policy that is based on constructed competitiveness, development platforms and business and innovation ecosystem theory. For policy practice, this paper provides a real-life example of a regional competitiveness strategy and the construction of a strategy that is based on the ecosystem frame.     

中国三系杂交稻恢复系资源的遗传多样性

以来自全国6个稻区16个省（市、自治区）及外引的128份三系杂交稻恢复系为试验材料，采用均匀分布于水稻12条染色体的36对SSR引物及9个表型性状标记进行遗传多样性分析。根据SSR标记检测结果，基于遗传距离的Neibor-jointing聚类显示128份恢复系可分为6个类群，籼亚种（83.2%）和野败型（82.6%）大多数分布于类群1和类群2，粳亚种（81.5%）和BT型（78.6%）大部分聚在类群3，红莲型（75%）相对集中于类群1。系谱分析显示，含有IR24血缘的材料分布于4个聚类群，而明恢63及其衍生系则分布非常集中。36对SSR引物在128份恢复系中共检测出281个等位变异，平均每个位点8.0个，平均遗传多样性指数(He)为0.6190，其中籼亚种（0.5770）略高于粳亚种（0.5656），但未达显著水平。按恢保类型，BT型(0.5816)>野败型(0.5705)>红莲型(0.4989)，野败型与BT型无显著差异，但二者均显著高于红莲型。按不同地理来源，He呈现南方稻区大于北方稻区，以华中双单季稻稻区(0.6057)最高，与其他稻区差异极显著差异；其次为西南高原单双季稻稻区(0.5326)；华北单季稻稻区(0.3902)最小，与其他稻区也差异极显著。表型性状检测的标记表明，平均Shannon-Weiner多样性指数为1.3980，其中籼、粳亚种分别为1.3746和1.3789，未达显著差异；不同恢保类型表现为BT型(1.4026)>野败型(1.3567)>红莲型(1.1732)。表型性状与SSR标记结果表现出一致性，相关系数分别为0.9981*（按亚种）、0.9418（按恢保类型）和0.8835**（按稻区）。     

Genetic diversity and population structure of Indian soybean [<Emphasis Type="Italic">Glycine max</Emphasis> (L.) Merr.] revealed by simple sequence repeat markers

Genetic diversity in 90 Indian soybean cultivars was assessed using 45 SSR markers distributed on 20 soybean chromosomes. Forty-five SSR markers generated 232 alleles with an average of five alleles/locus. The observed frequencies of the 232 alleles ranged from 0.01 to 0.94 with an average of 0.19. The polymorphic information content (PIC) value of the SSR markers varied from 0.10 to 0.83 with an average of 0.61 and about 71% markers have a PIC value of >0.5. In this study, 54 rare alleles including 19 genotype specific alleles were also identified. The observed hetrozygosity for SSR markers ranged from 0 to 0.11 with a mean of 0.10. Cluster analysis grouped the 90 soybean cultivars into three major clusters and principal coordinates analysis (PCoA) results were similar to those of the cluster analysis. A combination of eight SSR markers successfully differentiated all 90 soybean cultivars. The population structure analysis distributed the 90 soybean genotypes into two populations with mean alpha (α) value of 0.1873. In AMOVA analysis, proportion of variation within population was high (88%), whereas only 12% occurred among populations. In cluster and structure analyses, most of the genotypes with similar pedigree were grouped together. Soybean cultivars DS228, MACS-13, LSb-1, Hardee, Improved Pelican, and Pusa-24 were the six most genetically distinct cultivars identified. The study reported a moderate genetic diversity in Indian soybean cultivars and findings would be useful to the soybean breeders in selecting genetically distinct parents for a soybean improvement program.     

A networked sharing application system for reverse engineering

A networked sharing application system for reverse engineering is proposed. It is targeted at a wide distribution of small and medium manufacturing enterprises and the technology complexity of reverse product design. Making full use of modern information     

Development and Application of Automotive Engine CAE System Based on Internet

CAE system of networked collaborative is communication of the related information in the period of CAE analysis and developed design.The research of automotive engine CAE system is introduced.The results of(developed) design,FEA(Finite Element Analysis),static/dynamical and distortion analysis,and calculation of radiant noise for the engine cylinder is showed the importance to the developed design of engine.The analyses and design of the product is developed for the development and application of CAE system,and the analysis ability of engineer is improved.     

广西大石围天坑群风景旅游区爬行动物的调查研究

为掌握广西大石围天坑群风景旅游区爬行动物资源现状,加强野生动物资源保护。2008年7月-2011年7月,采用样线调查、样方调查与访问调查相结合的方法对该景区的爬行动物进行了调查研究。结果表明：该景区爬行动物物种多样性较为丰富,现已记录爬行动物42种,隶属2目、12科、32属,占广西现已记录的165种爬行动物的25.5%。其中,东洋界种类有38种,广布种4种,无古北界物种分布。区系组成上明显地以东洋界物种特别是华中区和华南区共有种为主。数量优势种有中国壁虎、中国石龙子、铜蜓蜥、南草蜥、渔游蛇、环纹华游蛇6种。最后对风景区爬行动物资源现状进行了分析,并提出了5条保护建议。