retrieval 中文意思是什麼

The design and application of water environment sample retrieval system based on aaf framework

論可視化信息檢索系統研究

Retrieval of the land surface albedo over arid oasis of northwest china from eos - modis data

西北乾旱區內陸綠洲農業特徵及發展認識

The remote sensing quantitative retrieval model for the appraisable factors of desertification monitoring are founded. in naiman country, inner mongolia, the experimental area, the hyperspectral imaging spectrometer data in plant growth seasons are collected by state - produced airborne hyperspectral imaging spectrometer omis - i, and the etm + image is also obtained. meanwhile, ground investigation and measurement are made, which include the measurement on reflection feature of different kinds of geo - targets and the ground investigation data necessary for spectral rebuilding and retrieval models of the appraisable factors of desertification monitoring

本研究以內蒙古奈曼旗作為研究試驗區，採用我國自行研製的機載高光譜成像光譜儀omis - ，在植被生長季節取得高光譜解析度成像光譜儀數據和etm ~ +圖像，並進行了同步的地面調查及量測，包括不同類型地物反射特性量測和光譜重建以及荒漠化監測評價因子定量反演模型所必需的地面樣方調查數據。

And understanding and studying the spectral features and variation rules of geo - targets in the experimental area, raising that it is the basis of geo - targets information collection with imaging spectrometer data to understand spectral features and variation rules of geo - targets, realizing that in a great extent spectral - integrated - form - based classification method can remove the phenomenon of " different spectrum with same objects " resulted from reflection ratio curve translation because of the angle change among sensor, targets and observation direction, and the average and variance images can be introduced to solve the problem of two kinds of geo - target with similar spectral forms and much different values of whole reflection ratio. it is suggested that " red edge " range bands of vegetation, which has close relationship with vegetation cover and biomass, is the main characteristic bands and important basis for careful vegetation classification and quantitative retrieval, and pixel - based derivative spectral analysis is very useful for removing the effects of soil background values and quantitatively retrieving vegetation biomass and cover. the remote sense quantitative retrieval model is developed for main appraisable factors of desertification monitoring assessment with imaging spectrometer data and then the applicability of model is analyzed

研究結果如下：首先針對荒漠化地區的地物特徵，對高光譜數據不同波段的數據質量、波段組合進行了評價，提出了適用於荒漠化監測的基本波段選擇集；初步了解和掌握了研究地區的地物光譜特性及變異規律，進一步明確了掌握地物光譜特徵和變異規律是用成像光譜儀數據提取地物信息的基礎；發現了基於光譜整體形狀的分類方法在很大程度上能夠消除由於傳感器、地物目標觀測方向之間的角度變化引起的反射率曲線整體平移的「同物異譜」現象，對于譜形相似而整體反射率的值相差較大的兩類地物，通過引入均值和方差圖像參與分類得到解決；研究還表明在植被「紅邊」范圍內的波段是進行荒漠化監測的主要特徵波段，這些波段與植被生物量和蓋度都有密切的關系，是開展精細植被分類研究和植被定量反演的重要基礎；像元的導數光譜分析可以消除土壤背景的影響，是進行植被生物量和蓋度定量反演的有力工具；建立了荒漠化監測主要評價因子的定量反演模型，並分析了模型的適用性。

Motivated by this observation, this paper studies the problem of efficiently processing k nn k - ge 1 search on r - tree - like structures storing historical information about moving object trajectories. two algorithms are developed based on best - first traversal paradigm, called bfp k nn and bft k nn, which handle the k nn retrieval with respect to the static query point and the moving query trajectory, respectively. both algorithms minimize the number of node access, that is, they perform a single access only to those qualifying nodes that may contain the final result

例如，若已知動物的軌跡，則動物學家可能提出如下兩種查詢： i在時間區間ti ， tj內找到離一個給定的靜態點譬如食物源實驗室等最近的k條動物軌跡ii在時間區間ti ， tj內找到離一條預先指定的動物軌跡最近的k條動物軌跡。

In order to improve the existing methodology of carpool information retrieval, on the basis of the region to region algorithm and by the use of the graph theory, an algorithm based on traffic network and its complexity analysis were presented

低效率的信息交流方式制約了合乘出行方式的發展，針對現有合乘信息檢索方式的不足，在區域區域匹配演算法的基礎上，引入圖的概念，提出了一個基於交通路網的路徑匹配演算法，並給出了演算法復雜度分析。

Conclusions the three retrieval periodicals have their special features, they are complemental to each other and cannot be replaced

結論《中文科技期刊數據庫》不能取代3種檢索刊物； 3種檢索刊物各具特色，它們之間互相補充，不可相互取代。

Quality control experiment of gms - 5 retrieval of rh field by using 1 - dvar technique

5反演濕度場的一維變分質量控制試驗

The beagle 2 lander of mars express is equipped with a hong kong designed and produced space tool - the mars rock corer for retrieval of samples from inside of rocks

火星快車上的獵犬2號登陸器，載有由香港科研人員研製的巖芯取樣器，負責探取火星土質樣本。

Report ucb csd - 01 - 1141, university of california, berkeley, usa, 2001. 8 cuenca - acuna f m, nguyen t d. text - based content search and retrieval in ad hoc p2p communities

本文針對上述問題，提出對等數據系統中的摘要索引結構及建立在此基礎上的基於內容的近似查詢處理方法。

User - definable article categories for easy grouping and retrieval

用戶定義文章分類，可以容易地進行分組和整理。

Automatic retrieval under the process dissociation procedure

過程分離程序下的自動化提取

A fors ( floricultural document tentative ontology - based retrieval system ) has been firstly developed in china in order to validate the reusability of fom. fors was based on chinese agricultural scientific & technological document database

進而為了驗證花卉學本體模型的可用性，論文還在國內首次設計並構建了一個具有一定推理功能的花卉學文獻試驗性本體檢索系統。

Besides its supplementary value for the patients with cardiopulmonary diseases contraindicated to the pneumoperitoneum, it also possesses distinctive value to both gasless laparoscopic gastrointestinal surgery with an inherent incision or an incision for specimen retrieval and hand - assisted gasless laparoscopic hepatobiliary and pancreatic surgery

它對因氣腹禁忌而失去常規腹腔鏡手術機會的患者具有重要的補充價值，對某些本需在腹壁造口或需擴大切口取標本的腹腔鏡胃腸手術、以及手助肝、膽、胰手術具有獨特的應用價值。

With the rapid development of internet technology and then the surpassing increase of all kinds of information characterized by geometric progression, the intellectualized information retrieval has become a major research topic, for the traditional information retrieval ca n ' t meet the requirements of users

隨著因特網技術的迅速發展，因特網上信息成幾何級數增長，傳統的信息檢索服務已不能滿足用戶的檢索需求，因此智能信息檢索成為重要的研究課題。

The effect of haptic cues on the learning and retrieval of nonsense syllables

觸動覺對詞匯學習和回憶的作用

Fuzzy histogram approaches for color image retrieval

彩色圖象檢索中的模糊直方圖技術

Building relevant illative mechanism according to the current way of knowledge expression and the characteristic of scheduling in or out warehouse in automatic storage / retrieval system

4 、根據已有的知識表示方式和自動化立體倉庫出入庫調度的特點，構建了相應的推理機制。

The preliminary interfusion of the paper writing into the teaching of the undergraduate literature retrieval course

初步融入到本科文獻檢索課教學中的實踐

Vegetation indexes retrieval of entironment using landsat tm in xi ' an

西安市生態環境植被信息的遙感反演