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Abstract : artificial neural networks has been applied to simultaneous determination of fluorene and acenaphthene by ultraviolet spectrophotometry. after compared the results of the synthetic samples obtained from the method above mentioned with those from partial least squares ultraviolet spectrophotometry, it shows that satisfied prediction can be obtained by them
文摘:用人工神經網路-紫外吸光光度法不經分離同時測定芴和苊,並與偏最小二乘-紫外吸光光度法比較.對合成樣品進行分析.結果表明,人工神經網路法同偏最小二乘法一樣能獲得滿意的分析結果Adsl is a new technology about connection to the net
摘要adsl是一種新的寬帶接入網技術。For a class of quadratic finite element diseretization systems of an elliptic boundary problem with jump coefficients under the unstructured quadrilateral grids, we are concerned with two kinds of quadratic lagrangian finite element equations, by analyzing the relationship between the linear finite element and quadratic finite element basis functions, a hew amg method is designed
摘要針對一類帶間斷系數的橢圓邊值問題,在非結構四邊形剖分下,討論了兩種二次拉格朗日有限元方程的代數多重網格法,通過利用雙線性元和二次元基函數之間的表示關系,給出了一種新的網格粗化演算法和構造提升運算元的代數途徑。The increasing proportion of distributed generation ( dg ) in power system will deeply affect the distribution network structure, the amperage, direction, and distribution of short - circuit current in the existing distribution network, and will thus affect the operation and control of the distribution network
摘要大量分散式發電的並網運行將深刻影響現有配電網路的結構、以及配電網中短路電流的大小、流向及分佈,由此給配電網的運行與控制帶來多方面的影響。Objective : to study the chordae and arachnoid granulations in the lumen of superior sagittal sinus and torcular herophili by endoscope and microscope
摘要目的:通過內窺鏡及顯微鏡觀察成年人上矢狀竇、竇匯竇腔及其內的纖維索、蛛網膜顆粒結構的解剖學形態特徵。Abstract : based on a numbers piled up for varies resources ( labor, materials, mechines ) in neuron plan, a composed distribution for various resources was obtained. then, using time difference and quantities of materials, the best selected work and time started as astrictive conditions, the best optimum distribution which satisfied variou resources in difference optimodel and astrictive conditions was got
文摘:將多種資源(人工、材料、機械)的數量同時在神經網路計劃技術上實行數字化疊加,從而獲得多資源疊加的合成分佈,再利用神經網路計劃技術中各個工作的不同時差和資源數量,按收斂條件選擇最佳開工工作和開工時間,滿足多種資源在優化模式中按收斂條件進行最優分佈Starting with the astronomic factors which induce the tide phenomenon, this paper introduces a method of nonharmonic analysis neural network to predict tide, and this method is used to calculate the real tide of 2002 at hongkong tide station and the result are compared to the observed data
摘要文章運用非調和法,直接從引起潮汐現象的天文因素入手,以2002年香港驗潮站實測資料為例,用神經網路對潮汐知識進行了學習模擬,對未知結果進行了預報。Celebrity blog began to exist in 2002, which didn ' t really get a hit until 2005 with the help of specialized channels offered by sina. com website and it formed a " battle group " in less than half a year
摘要名人博客雖然在2002年就已存在,但直到2005年藉助新浪網站提供的專門頻道才真正開始火暴,不到半年就形成了「集團作戰」的規模。This article describes practices in university of oklahoma libraries in usa, and comparing with situation in libraries in china to explain that cataloguers should apply traditional and modern cataloguing technologies to improve quality of online catalogues
摘要本文描述了美國俄克拉荷馬大學圖書館編目部門的實踐活動,對照國內圖書館的情形,闡明了在網路環境下,編目人員如何利用傳統和現代編目技術提升在線目錄質量,從而為讀者提供更加優質的檢索服務。The modeling of the growing status of the cauline of tomato in growing process is discussed, by using nn and genetic algorithm
摘要採用神經網路和遺傳演算法,對溫室栽培番茄生長過程中主要器官莖的生長過程進行了建模。The main causes which lead to tensile abnormal fracture of swrh82b steel rods are the network cementite sod the big brittle inclusion
摘要通過對swrh82b盤條的拉伸斷口進行分析,認為網狀滲碳體和大顆粒脆性夾雜物等缺陷是引起斷口異常的主要原因。An epoxy anti - corrosive paint was prepared with polyaniline doped sulfosalicylic iii abstract acid as anti - corrosive agent. the phase texture of fracture surface on the coating was observed by sem. the results showed that granulated polyaniline formed crossing network in the coating, so the coating is well conductible
採用磺基水楊酸摻雜聚苯胺與環氧樹脂共混制備防腐塗料,掃描電鏡研究結果摘要表明,聚苯胺是以連續的網狀結構在復合物中形成導電通路,從而保證塗層具有良好的導電能力。In a series of 30 cases of retinitis pigmentosa, pigment epithelial alterations included mottling of the macula in 8 eyes ( 13. 3 % ), bull ' s - eye pattern in 24 eyes ( 40 % ) and atrophy or hypopigmentation in 56 eyes ( 93. 3 % ) ; macular edema with retinal thickening was present in 30 eyes ( 50 % ), cystoid macular edema in 18 eyes ( 30 % ) ; broadening or loss of foveal reflex was present in 60 eyes ( 100 % ), preretinal membrane noticed in 58 eyes ( 96. 7 % ) and macular hemorrhage in one eye ( 1. 7 % )
摘要對網膜色素變性癥的病例30例60眼探討其黃斑部病灶的情形,網膜色素上皮層變化中的雜色斑點病變見於8眼,頻率為13 . 3 % ,牛眼樣病灶見於24眼( 40 % ) ,網膜脫色素病灶為56眼( 93 . 3 % ) ;黃斑部浮腫之網膜增厚為30眼( 50 % ) ,類囊胞浮腫為18眼( 30 % ) ;其它變化包括中心窩反射消失或增寬為60眼( 100 % ) ,網膜前纖維膜為58眼( 96 . 7 % ) ,黃斑部出血和疑似網膜下新生血管各為1眼( 1 . 7 % ) 。Using the split steps finite element method, the varied - boundary two - dimensional numerical model of diurnal tide and tidal current in the luoyuan bay is constructed
摘要採用不規則三角形網格的分步雜交法,建立羅源灣海域二維變邊界全日潮汐和潮流數值模型。Fish samples captured by drift net from xiamen eastern seawaters from july 2003 to june 2004 were analyzed
摘要2005年7月至2006年6月對廈門東海域的流刺網漁獲魚類的種類組成及其多樣性進行采樣分析。Based on the analysis of the fishing capture monitoring data, which obtained from 5 deep water drift net fishery resources investigation boats from april 1998 to march 2001, the results indicated that the psenopsis anomala which took accounted for 8. 68 % ~ 27. 16 % of the total catch, was one of the three preponderant species in the northern part of the east china sea and southern part of the yellow sea. ( branchiostegidac ranked first, followed by the psenopsis anomala or argyrosonus altetnate ). the yearly quantity distribution concentrated in summer and autumn, and reached the peak in latter summer to early autumn
摘要根據對5艘深水流網資源信息船1998年8月~ 2001年3月連續漁撈調查資料進行分析研究,結果表明:刺鯧是本海域深水流網漁業的三大優勢種之一(方頭魚占首位,刺鯧和白姑魚年間變動量相互交替) ,占年總漁獲量的8 . 68 % ~ 27 . 16 % ;周年數量分佈集中在夏、秋季,全年數量最高值出現在夏末初秋。A binary tree - based and dyadic indicated codification method is proposed in the digital watershed model ( dwm )
摘要在數字流域模型中提出了一種基於二叉樹理論,並以二元形式表示的河網編碼方法。Based on the relative independence of mathematical cover and physical grid, and considering the action of truely existent various equilibrant force in system for system balance, a method of simulation for excavation unloading using numerical manifold method in geotechnical engineering is proposed
摘要基於數值流形方法數學覆蓋與物理網格的相對獨立性,考慮任一時刻體系中真實存在的各平衡力項對體系平衡的作用,提出用數值流形方法模擬巖土工程開挖卸荷的方法。Cms designed for the semantic web, with wysiwyg page editing, rdf summaries of profiles and news, and countless other quality features you expect to find in a cms
一個動態網站的文件管理系統,帶有wysiwyg頁面編輯器, rdf網摘,以及其他許多你所期望的功能。A cms designed for the semantic web, with wysiwyg page editing, rdf summaries of profiles and news, and countless other quality features you expect to find in a cms
一個動態網站的文件管理系統,帶有wysiwyg頁面編輯器, rdf網摘,以及其他許多你所期望的功能。分享友人