background sample 中文意思是什麼

background sample 解釋
背景樣品
  • background : n 1 後景，背景；基本情況；（紡織品等的）底子；出身；經歷。2 隱蔽的[不引人注目的]地位；幕後。3 襯...
  • sample : n 1 樣品，貨樣。2 標本；榜樣，實例。3 【統計】典型取樣，抽檢查。4 【電訊】信號瞬時值。5 【冶金】 ...
  1. Furthermore the expressions of all the genes in a representative sample were examed by the recently developed method of hybridization to cdna arrays. this was intended to strengthen the theoretical background for the screening of norway spruce genotypes with low lignin content. the calli of the transformed sublines a78 - 3, a78 - 4, a78 - 5 and the untransformed control a95 : 88 : 22 were successfully induced to form mature embryos from which plantlets were established

    以轉基因亞系a78 - 3 、 a78 - 4 、 a78 - 5和未轉基因對照a95 : 88 : 22的細胞愈傷組織為實驗材料，以dkm和lp - m熟化培養基培養五周后，再以1 4sh萌發培養基培養四周，成功地誘導形成了胚胎，並再生成新的小植株，萌發成活率達到80 。
  2. Properties and applications of bh1216 two - sample low - background and scintillation counter

    測量儀性能研究及其應用
  3. This dissertation ' s problem just comes from this engineering background exactly. for this two kinds of cores, which were taken from the engineering place, this dissertation draws sample by computer and analyses the weight distributions, getting the weight curves, the middle weights, asymmetry coefficients and other physics characteristic indexes of them, and makes up the model samples which are similar to the factual weight distributions

    本文對施工現場採用的10 100kg和1 800kg重量范圍的堤心石進行了隨機抽樣和重量級配分析，得到了描述這兩種堤心石類別的重量級配曲線、中值重量、不均勻系數等物理特性指標，並由此制備重量級配相似的模型樣本。
  4. The content of this paper is arranged as foll owing : chapter 1 introduces the concept of credit, credit risk and credit assessment, as well as the history and development of credit assessment ; chapter 2 introduces the history of ai technology, and the background of expert system and neural network. characters and disadvantages of expert system and neural network are presented respectively and the necessity of combining expert system and neural network is lightened ; chapter 3 shows the process of dealing with sample data, including the treatment of exceptional data and factor analysis, and puts forward the concrete framework of the mixed - expert credit assessment system ; chapter 4 introduces concept of object - oriented technology, and constructs object model and functional model after analyzing the whole system. it also illustrates the implementation of concrete classes by an example of rule class and the inference algorithm in the form of pseudocode ; chapter 5 introduces the structure of the whole system, the major functional models and their interfaces, and the characteristic of the system is also generalized ; chapter 6 summarizes the whole work, and points out the remaining deficiencies as well as the prospective of this method

    本文具體內容安排如下：第一章介紹了信用、信用風險、信用評價的概念，回顧了信用評價的歷史、發展和現狀，並綜合各種信用評價模型，指出這些模型各自的優缺點：第二章簡單描述了人工智慧技術，著重介紹有關專家系統與神經網路的基礎知識，通過總結它們的優缺點，指出結合專家系統與神經網路構造混合型專家系統的必要性；本章還介紹了神經網路子模塊的概念，提出了混合型專家系統的一般框架與設計步驟：第三章對樣本數據進行處理，包括異常數據的剔除、因子分析等，提出了信用評價混合型專家系統的具體框架結構，介紹了系統知識庫的主要部分、基於優先級的正向推理機制的流程、以及基於事實的自動解釋機制的具體實現方法；第四章介紹了面向對象技術，進而採用面向對象對信用評價系統進行分析，建立了對象模型和功能模型，並在此基礎上，採用c + +語言以規則類為例說明系統中具體類的實現，用偽代碼的形式描述了推理的演算法；第五章描述了整個系統的結構，對系統主要功能模塊和界面進行了介紹，並總結系統的特點；第六章總結了全文，指出本文所構造系統存在的不足以及對將來的展望。
  5. Because the concentration of zirconium in uranium has large ranges, from 1. 50xlo ' 6 - 3. 8g / gu, not only how to decrease the remainder of uranium to eliminate its determinate effect but also how to acquire higher recovery of zirconium is considered, so the method of silica gel, the method of tbp levextrel resin chromatography, the method of tta chromatography and the method of tta extraction are compared. then tta extraction is chosen to acquire the ideal separation purpose. compared with icp - ms and icp - aes, xrf has characters of high repeatability, stability, low cost, high concentration elements analysis, the ability to determinate solid sample and having comprehensive practicability, but xrf has lower sensitivity, so how to increase the concentration of the sample to acquire better precision is a difficult problem, the optimum of operating condition : the integral time of spectral lines is 60s, the integral time of background lines is 20s, the voltage of xrf is 50kv, the electric current is 50ma

    由於鈾中鋯的含量范圍很廣，從1 . 50 10 ~ （ - 6 ） 3 . 8g / gu ，在分離和測量時，既要考慮盡量地減少鈾的殘留量以消除鈾對鋯測量產生的影響，又要獲得鋯的理想的回收率，因此本文在分離方法的選擇上比較了硅膠吸附分離法， cl - tbp萃取色層法， tta萃取色層法和tta萃取分離法的優缺點，認為tta萃取分離法可以達到理想的分離效果。
  6. Withal, basing on study on the domestic and foreign farmland appraisal, on introduction land resource use trait in outskirts hill chongqing, the thesis introduces firstly international all - purpose five principles of sustainable land use management, exerts delphy to accept or reject repeat index elected, manages ahp and dsr to demonstrate system with bishan of representative outskirts hill county chongqing as a sample, studies on farmland appraisal index system of outskirts hill chongqing, and looks forwards to favoring farmland appraisal work of chongqing and doing indeed southward hill zone. the central conclusion as follows : 1 in the background of town land appraisal constantly perfect in our country, the cultivated land value management, as the part of land market, is more and more important

    對此，本文在分析國內外農用地分等定級研究的基礎上，通過對重慶市近郊丘陵區土地資源利用特點的詳細介紹，引入國際上通用的持續土地利用管理的五大原則的基本框架，運用特爾斐法對所選指標進行多輪取捨，結合層次分析法、 「推動力?狀態?反應」法等數學方法，以重慶市典型的近郊丘陵縣? ?璧山縣為體系論證樣點進行體系論證，就重慶市近郊丘陵區農用地分等定級指標體系作以研究，以期對重慶市乃至南方丘陵地帶農用地分等定級工作的開展有所裨益。
  7. The purpose of this paper is to find out the characteristics of corporate restructuring and reorganizations under the background of strengthened supervision and improved accounting standards in 2001. using financial data on chinese public firms that had performed restructurings in 2001, this paper studies the impact of restructuring activities on firms " performance. it finds that performance of sample companies are better than the market average both before and after restructuring, but financial ratios does not improve obviously, what ' s more, the roe ratios even drop generally, which are very different from the characteristics during the past few years

    本文採用以財務數據為基礎進行評價的方法，對2001年上市公司資產重組進行研究發現，從資產重組的方式來看，收購兼并所佔比重最高，業績較好的公司偏向于選擇這種重組方式，而資產置換、股權轉讓仍為績差公司所青睞；從重組前後財務指標的變化來看，重組公司表現優於市場平均水平，但與往年重組公司當年業績即得到明顯提升不同， 2001年重組公司財務指標並未得到顯著提高，凈資產收益率更是全面下降，統計對比不支持上市公司利用資產重組調節公司績效的觀點。
  8. Applying the principle and research method of cultural anthropology, this paper analyzes natural and cultural background, settlemental model, prototype of architecture, character of prototype, identity of space through the hakka house of huang family in kengzi town as a sample which is typical of hakka local - style dwelling. then concludes that relations between settlemental model and social organization of the huang family and indicates that the surrounding house - form is typical not only as a unique dwelling form, but also embodies their social formation of " living in compact communities " of hakka architecture

    本論文以坑梓鎮黃氏宗族客家住屋這一客家民居為研究對象，應用文化人類學的基本理論和研究方法，通過分析其自然文化背景、聚落形態、建築型制、類型特徵、空間特性等因素，指出黃氏宗族聚落形態和社會組織間的關系，並表明其住屋典型類型? ?圍屋，不但在居住模式上表現出獨特的個性，還體現了客家建築「聚居」的社會形態內涵。
  9. Introduction to sample. 2. introduction to industry - wide background and company ' s current situation

    2 、公司所處的行業背景介紹及公司基本情況介紹。
  10. Some foreign literatures use the samples of our capital market, but the data is before 2000. however, there is something new after 2000. there are fewer national literatures investigating the timeliness of the annual announcements. after the comparisons and estimations of the foreign and national literatures, our sample consists of announcements between 1997 and 2004 and we investigate the effects of audit opinions and unexpected earnings on the timeliness of annual announcements and the interaction effect between them. the sample consist the announcements after 2000 and we consider our special background too, so it is more applicable to the chinese environment

    本文研究發現在審計意見相同的情況下，有負的未預期盈餘的公司比有正的未預期盈餘的公司公布年報的時間要晚;而在未預期盈餘的性質相同的情況下，沒有得到標準審計報告的公司比得到標準審計報告的公司公布年報的時間要晚;而且不僅未預期盈餘的方向會影響公司公布年報的時間，未預期盈餘的大小也會影響公司公布年報的時間;未預期盈餘和審計意見的類型存在相關關系;公司的股權性質也會影響公司公布年報的時間。
  11. Clickonce background update technology sample

    > clickonce后臺更新技術示例
  12. The author of this article thinks it significant to choose to investigate into the rural family aged supporting pattern in southern mountain areas of anhui province as a sample to get detailed revealment of china ' s current aged security in rural communities where people once lived closely around their clan. most southern part of anhui once belonged to huizhou, a historical area with tight clan domination and a strong tradition to support old family members. taking the mountain village zhaitan located in jixi, one southern county of anhui, as a specific research example, the author tries to give a detailed analysis and description of the changing process of the family support pattern accompanied by conflicts and current possible policies to choose in rural communities of similar traditional background

    並以具有相同社區文化傳統，同時可耕地少、勞動力轉移程度較高、村民較為富裕的績溪宅坦古村社區為具體剖析個案，在借鑒已有相關研究成果的基礎上，主要運用人類學、現象學社會學的日常生活分析法和政治學的焦點事件分析法，詳細揭示皖南山區農村家庭養老模式的變遷過程及這一過程中的矛盾、沖突以及現階段所面臨的新選擇，並在尊重社區傳統的基礎上，就整合與建構現階段皖南山區宗族聚居農村社區新型家庭養老模式，提出自己的見解和對策。
  13. 7. the labeled sample was purified and hybridized with the self - made cdna microarray, which demonstrated low background and clear positive signals

    7 、標記的樣品純化后與晶元雜交，獲得的雜交結果背景低，陽性信號的界限清楚。
  14. According to these background, we have proposed 3 auto acoustic feedback suppressor schems : scheme i. two major algorithms - the wavelets or filter banks theories and the frequency sample filter theory have been implemented to make up the scheme a adaptive acoustic feedback suppressor

    分別是:第一，基於濾波器組和頻域采樣法設計濾波器的方案。利用小波分析和重構演算法對信號進行分解並最後重構，同時在頻域直接採用頻域采樣法設計濾波器對嘯叫的頻點進行陷波處理。
  15. Part two is preface, introduces the background to write the article and the significance of research. it includes the sample area, the aim, the technical line and the study summarization on land use insmall - towns

    第二部分為序言，簡要介紹了論文選題的背景、科學與現實意義、研究樣區、研究目標與技術路線及其小城鎮土地利用研究綜述。
  16. As a currency learning techniques introduced recent years, svms which handle small sample size problem have the features of good generalization ability, solid theoretical background, high accuracy, and getting global optimization. ho vever, it is a classifier for two - class originally and not suite for the multi - class problems and dealing with large data sets. on the other hand, rst has the features of handling and reducing large data sets while has lower classification accuracy than svms. in this paper, the data are classified in advance with the rst, and two methods of combination of the data to classify two - class problems are proposed

    但它是二值分類器，不適用於多值分類場合及處理海量數據。粗集理論則具有處理和約簡大數據量的優勢，但分類精度不如svm方法。本文利用粗集理論對數據進行預分類，在此基礎上提出兩種二值分類數據組合方法，然後，再利用svm兩兩分類。
  17. The influence of sample ' s matrix, analytical lines of spectra and the background on the test were discussed, and the optimal determination condition was confirmed

    討論了基體、分析譜線對測定結果的影響，並確定了最佳的測定條件。
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