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heterogenous n.【生,醫】異源的,異種的,異體的。

heterogony

Preferential selection mechanism of heterogenous idioms involves language elements of voice , structure , meaning , word , color and national psychology of convention , balance , accuracy , variation and so on , which is a dynamic and multiple standards and a static inter - regulated harmony and integration 一組通用?異體成語的優選機制涉及語音、結構、語義、文字、色彩等語言要素和通俗性、均衡性、準確性、變異性等民族心理,是動態的多元標準和靜態的內在規律的協調和整合。

However , its wide application in manufacture has always been restricted by such a question as low phytase - producing level of wild strains , so before the wild strains which can produce acidic phytase are widely used , their phytase activities must be improved by various means , in which using an efficient expression system to express heterogenous phytase is a main consideration 植酸酶主要存在于微生物和植物中,動物體內也有少量存在,但真正具有開發價值的主要是微生物產生的植酸酶,尤其是曲霉產生的酸性植酸酶。國外早在1991年就成功地利用dna重組技術獲得第一株酸性植酸酶的工程菌,并已投入商品化生產。

Quinic acid , used shikimate pathway in e . coli , it is necessary to extend metabolic pathway by introduction of a heterogenous gene qutb into the host cell . double specific enzyme genes arog , qutb or three ones arog , qutb , arob were co - expressed in a single plasmid pbv220 to improve the enzymes “ rate - limiting reactions . modifications of e . coli chromosome by both disruption of the arod gene and directed - site insertion of the arob gene resulted in the change of carbon flow redirected into the quinic acid biosynthesis branch 利用大腸桿菌莽草酸途徑合成新的代謝物奎尼酸,須在宿主細胞引入異源酶基因擴展代謝途徑;串聯表達酶基因,同時適量增加不同種屬的多個關鍵酶酶量,改善限速反應;利用同源重組進行基因整合和基因破壞,改造染色體結構定向改變微生物代謝途徑;目的是將碳代謝流最大程度的引向奎尼酸生成的方向。

Differentiated from the former markers , afm neither aims at some certain factors , nor tries to establish a precise mathematic model . on the contrary , afm follows a rule of result - oriented and reallocates the network resources in an adaptive manner , and thus gains high performance in the fairness of bandwidth sharing ; 3 ) the congestion control mechanisms of the current tcp have been proved to be effective for prevention of network collapse . however , with the development of network technologies , the insufficiencies of tcp are becoming increasingly severe , especially in the environment of heterogenous networks , the throughput performance of tcp is disappointing 與以往的標記算法不同的是,該算法并不針對具體某一個因素對公平性的影響,也不試圖建立一個精確的數學模型,而是按“結果導向”以一種自適應的方式來對可用的網絡資源進行重新分配,從而獲得很高的公平性; 3 ) tcp協議的擁塞控制機制已經被證明能有效地防止網絡崩潰的發生,但隨著網絡技術的發展, tcp協議的一些局限性也已經暴露出來了,尤其是在異構網絡環境下,其吞吐量性能表現令人堪憂。

Supported by national 863 / cims high tech program - semantic integration of enterprise heterogenous data source , this paper takes xml as a public model and studied the conversion technology among heterogeneous relational database systems by means of bidirectional reversible conversion between relational and xml 本文結合國家863 cims研究項目“基于語義與模型的企業異構數據源集成關鍵算法與實現技術” ,研究以xml為公共模型,通過關系數據庫與xml的可逆雙向轉換,建立異構關系數據源的統一轉換工具。

According to the definitions of bottleneck bandwidth , available bandwidth and bulk transfer capacity , we analyzed the algorithms which named vps ( variable packet size ) , pptd ( packet pair / train dispersion ) , slops ( self - loading periodic streams ) and topp ( trains of packet pairs ) ; based on the principle of sub - path bottleneck measurement , we developed the bottleneck measurement algorithm using heterogenous packet - pair train ; after designing the three child algorithms ( demarcating bandwidth range , approaching bandwidth value and predicting the trendency of available bandwidth fluctuation ) , we performed the algorithm called self - loading binary search ; applying the multi - home properties of sctp ( stream controltransmission protocol ) and measurement algorithm of available bandwidth , we presented a scheme to adjust the sctp transport path when there are network congestions or faults ; by the library of winsock and winpcap , we developed a measurement program to look for bottleneck bandwidth . in ns2 experiments , the algorithm based on heterogenous packet - pair train fitted well , and the algorithm of self - loading binary search worked quickly , and the sctp scheme improved the throughput effectively 本文根據瓶頸帶寬、可用帶寬和btc ( bulktransfercapacity )三類網絡帶寬定義,分析了vps ( variablepacketsize )和pptd ( packetpair / traindispersion )瓶頸帶寬測試算法, slops ( self - loadingperiodicstreams )和topp ( trainsofpacketpairs )可用帶寬測試算法;基于子路徑瓶頸測試原理,設計了異構包對序列的瓶頸測試算法;并結合三個子算法(界定帶寬范圍算法、接近帶寬值算法和帶寬變化趨勢判定算法) ,設計了自載流折半查找的可用帶寬測試算法;把上面的算法應用到sctp ( streamcontroltransmissionprotocal )的多宿性和可用帶寬測試,提出了一個網絡擁塞或故障時調整sctp傳輸路徑的方案;結合winsock和winpcap兩套網絡開發工具,設計了一個瓶頸帶寬測試程序;通過ns2仿真實驗,驗證了基于異構包對序列瓶頸測試算法的準確性、自載流折半查找算法的快速性,和sctp改進方案的有效性。

Although there are a lot of productions and prototypes of wfms , they lack the ability to ensure the correctness and reliability of the workflow execution in the presence of concurrency and failure . on the other hand , the original centralized homogeneous and desktop oriented technology has developed toward distributed heterogenous and network oriented technology 另一方面,隨著網絡的普及, internet的快速發展,工作流系統的外部環境發生了巨大的改變,原來集中式的、同質的、面向桌面的環境逐漸朝著分布的、異質的、面向網絡的方向發展。

With difference from the way that traditional methods perform by accumulating the frequency of keywords . we propose a new metrical function that employs the rs - based entropy by comparing function values to measure the feature of web pages . besides , according to the unstructured and heterogenous characteristics of www , the effect of hypertext tags to keywords “ weigh has been taken into account to obtain the most effective keywords for document classification 有別于傳統的對關鍵字頻度進行累加的方法,本文提出了基于信息熵的文本關鍵詞測度函數,通過對關鍵詞函數值進行比較,獲取對文本分類最具影響性的關鍵詞序列;同時,針對web上異質、非結構化信息的特點,該分類算法還考慮了超文本標記對關鍵詞權值的影響。

In field of electric system , data management system requests high performance in security 、 heterogenous 、 real - time 、 dynamic distribution and etc , and is in need of modifying original data management pattern , this problem can be resolved by data management technology under grid environment 在電力系統研究領域中,數據管理系統要求數據資源具備較高的安全性、異構性、實時性和動態分布等特性,需要改進原有的數據管理模式,網格環境下的數據管理技術可以解決這一問題。

In order to get the soluble recombinant eo protein and inspect the protein expression status convinently , the egfp and eo gene were ligated into baculovirus transfer vector . with the co - transfecting sf9 cells of baculovirus recombinant transfer vector and linearized viral dna , and plaque purification in the posttransfection procedure , the pure recombinant baculovirus were harvested , which infected the sf9 cells for amplifying to generate a p - l stock . . in the meantime , the fluorescence microscopy detection indicated expressed egfp protein to confirm the heterogenous protein expression of recombinant baculovirus . the pi - stock from a pure plaque was used to generate a high liter p - 2 stock , which was determined in liter as 1 . 14 107pfu / ml by performing a plaque assay . when a volume of p - 2 stock infected the sf9 cells with moi 5 - 10 for expression , the strong fluorescence was obeserved on the day 3 of postinfection 此外,為了得到可溶性重組eo蛋白并便于觀察重組蛋白的表達情況,我們將egfp基因與eo基因相連插入昆蟲桿狀病毒轉移載體中,與線性桿狀病毒dna共轉染sf9細胞后通過噬斑純化得到純的重組桿狀病毒,將其感染sf9細胞制備p1種子液,同時用熒光顯微鏡觀察綠色熒光蛋白的表達情況剔除表達效果差的重組桿狀病毒。再用p1種子液感染sf9細胞制備高效價的p2種子液。通過病毒液的梯度稀釋和噬斑測定,確定p2種子液的病毒滴度達1 . 14 10 ~ 7pfu ml 。

Server - class linux machines are reliable , have excellent uptime , provide good system services including interoperability in heterogenous networks , host a range of high - quality fortran compilers , and have security that s at least comparable to other enterprise - ready systems 服務器級別的linux機器很可靠,能長時間正常運行,提供了良好的系統服務(包括異構網絡中的互操作性) ,主管各種高質量的fortran編譯器并且很安全(至少可與其它準備向企業提供的系統相比擬) 。

The merits and characteristics of xml such as platform - independent , easy to be expanded , interactive , strong semantic expression ability , and able to be formatted - make it easy to describe relational schema and serve as an intermediary in the conversion among heterogenous databases Xml本身所具有的與平臺無關、易于擴展、交互性好、語義性強、可格式化等特性和優點,使得其能夠方便地描述關系數據庫,并在異構關系數據庫之間的轉換過程中發揮橋梁作用。

In the same time , implement of qos mechanism will increase the management burden of ip network . it would be too difficult or even impossible to manually configure heterogenous devices with correct queue parameters and traffic processing mechanism to provide consistent qos service in a large scale network 隨著網絡規模的不斷擴大,通過傳統的網管方法配置設備的隊列參數、流量調節機制等來保證提供給網絡連續一致的qos服務非常困難,甚至是不可能的。

With the coming era of internet , the information that the users can gain includes various documents , which range from technique materials , business information to news reports and entertainment currents . these documents make up a huge heterogenous and open distributed database 隨著網絡時代的到來,用戶可獲得的信息包含了從技術資料、商業信息到新聞報道、娛樂資訊等多種類別和形式的文檔,構成了一個異常龐大的具有異構性、開放性的分布式數據庫。

Due to some relative independence between departments in enterprise , and short of consolidated plan and standard when designing application systems , there must be some information islands in the application systems , which are separate , heterogenous , obturated and unshared 在企業內部,由于部門間相對獨立,構建系統時缺乏統一的規劃和標準,所以造成了現有的應用系統是分散、異構、封閉的系統,相互之間不能共享信息,形成了一個個“信息孤島” 。

Now , there is relevant domestic and international research including construct and management , modeling method of the virtual enterprises and the joining of heterogenous workflow system but they do n ' t combine outsourcing business of virtual enterprises with workflow technology 目前對于虛擬企業構建與管理、虛擬企業工作流的建模方法、異構工作流的無縫連接,國內外都有相關的研究。但都未能把虛擬企業的外包活動與工作流技術明確的結合起來。

In a general frame , disp is platform - neutral and could achieve reliable and transparent data transmission , complex transaction processing and database replication between homogenous or heterogenous dbmss . as a consquence , the data consistency and integrity are realized 它能在統一框架下,完成不同操作系統以及不同或相同數據庫間數據透明可靠傳輸、復雜交易處理和數據庫復制的功能,從而實現分布式系統的數據一致性和完整性。

4 . the thesis combines the actual need of archives administration , studies how to integrate the heterogenous data into the database . the xml schema is established , the heterogenous data is integrated by the xml schema and web service . 5 結合檔案管理的實際情況,對異構數據的集成進行了系統的研究,并在此研究基礎上,設計了異構數據集成機制,利用xml建立全局數據模式以進行數據描述,采用web服務進行異構數據集成。

Xquery java api can also shied heterogenous data sources and supply users with a unified interface which can query a number of data sources . users can achieve query aims by writing xquery search strings . xquery itself does not implement such function Xqueryjavaapi還可以屏蔽數據源的異構性,提供給用戶一個使用多種數據源的統一接口,只要用戶提供滿足查詢要求的xquery查詢字符串,就可以使用該接口達到查詢目的。