dems 中文意思是什麼

The basic concept of terrain information content is proposed after an overall review of existing research achievement. applying a series of analysis and data processing method, like math - analysis, mathematical statistics, comparative, error visualizing, this paper carefully investigated the terrain information content characteristic of dems of 1 : 50000 map scale of loess plateau area

本文在對前人已有研究成果進行系統總結的基礎上，首先明確了dem地形信息容量的基本概念，並運用數學分析、數理統計、比較分析、誤差地圖等方法，以海拔高程與等高線為研究對象，以1 ： 1萬比例尺dem為參考真值，探討了黃土丘陵溝壑區1 ： 5萬dem的地形信息容量特徵。

Experiment results show : ? he theory and method of information content could play an important role in the case study on the accuracy and application of dem. ( 2 ) in the loess plateau area, there are much difference between 5m resolution dems of 1 : 10000 map scale and 25m resolution dems of 1 : 50000 map scale while gathering terrain characteristic information, and yet the spatial structure of dem error have discipline and measurability on statistics. ( ? the results could offer fundamentals and methods to people on their work to research the terrain information content of dems with different scale level

研究結果顯示： 1 、地形信息容量的理論與方法對于dem精度與應用適宜性的研究具有重要的作用； 2 、在黃土丘陵溝壑區，同1 ： 1萬比例尺5米解析度的dem相比， 1 ： 5萬比例尺25米解析度dem在提取地形特徵方面具有較大的差異，但誤差的量值與空間分佈具有統計上的規律性與可估算性； 3 、以上研究結果可望為其它各級比例尺dem地形信息容量的研究提供新的理論基礎與技術方法，也可為有關規范、標準的制定提供依據。

Applying the basic theories of spatial data mining and geomorphology, taking the loess plateau of north shaanxi province, china as the research area, this dissertation explored the theories and systematic structures of geomorphologic data mining and acknowledge discovery from dems, ascertained the systematic structures of topographic factors and synthetic topographic acknowledge, as well as systemically summarized mining algorithms from dems. the author pa id more attention also to analyze the principle and algorithm of flow length, curvature, relief, the earth ' s surface incision and gully density. in this research, the elementary constitutes and mining algorithms of regional character acknowledge in the loess plateau were probed

本研究在廣泛總結前人研究成果與研究經驗的基礎上，利用空間數據挖掘和地形地貌學的基本理論，以陜北黃土高原多地貌類型區為實驗樣區，以1 10000比例尺dem為樣本數據，探討了dem中地形地貌數據挖掘與知識發現的理論方法和體系結構；確定了宏觀和微觀地形因子、地形綜合特徵知識的體系結構；系統總結了dem基本地形因子的提取演算法，並重點對坡長、曲率、地形的起伏度、切割深度和溝壑密度因子提取的原理與演算法作了深入的分析；提出了黃土高原地區區域特徵知識的基本構成及其系統完整、科學可行的挖掘提取演算法；擴充了arcviewgis軟體平臺中dem空間分析的基本功能；實現了以delphi7 . 0為平臺的地形信息輔助挖掘系統的設計與開發；完成了對黃土高原多地貌類型區（樣區）地形信息空間分異特徵的分析。

Request the services of a competent person approved by the director of electrical and mechanical services ( dems ) to locate the alignment of all underground electricity cables in the area, irrespective of the excavation depth

不論挖掘深度為何，必須要求機電工程署署長認可的合資格人士測定工地范圍內所有地下電纜的準線。

A hybrid 3d data model based on multi - dems and qtpvs and its application in geological modeling

的混合數據模型及其在地質建模中的應用

After analyzed and compared characteristic of several common interface programs of database, mfc odbc interface of accessing database being abundant functions and operating easily, the thesis studies thoroughly the mechanism that mfc odbc is used to visit database. considering diversity of data formats in dems, file and source database transforming target database are sloved by mfc odbc

論文詳細分析與比較了幾種常用數據庫介面編程，考慮到mfcodbc數據庫介面功能豐富，操作相對簡便，深入分析mfcodbc訪問數據庫機理，針對分散式試驗與測試系統數據格式的多樣性，利用mfcodbc開發並實現了文件數據及odbc源數據庫轉換到目標數據庫過程。

It provides administrative guidelines to dems to take appropriate action to improve the performance of rew

這項制度提供了行政指引，讓機電工程署署長可以採取適當行動，促使注冊電業工程人員改善表現。

A review on the scale issue in dems and digital terrain analysis

及數字地形分析中尺度問題研究綜述

With the help of advanced remote sensing digital technique and on the data basis of the topography map data and some gps controlling points the dems in tiantai village xuanhan county sichuan province have been set up before and after the occurrence of superlarge landslide in on sept 5th. 2004

摘要2004年9月5日，四川省宣漢縣天臺鄉的義和村發生特大型滑坡災害后，利用先進的數字遙感技術，結合地形圖資料和野外所則的gps控制點，製作出研究區滑坡前後的數字高程模型（ dem ） 。

When the adp against a rew has reached the first pre - set limit ( 10 or above ), notification letter will be issued by dems to give him a warning for him to improve his performance

當某注冊電業工程人員的平均扣分達到第一階段的預設界限（ 10分或以上

When the adp against a rec has reached the first pre - set limit ( 18 or above ), a notification letter will be issued by dems to give him a warning for him to improve his performance

當某注冊電業承辦商的平均扣分達到第一階段的預設界限（ 18分或以上） ，機電工程署署長便會向他發出通知書，警告他須改善表現。

Conflict in iraq dems bow to bush on funds for war

亞洲時報在?中文版

A registered electrical contractor shall carry on hisher business as an electrical contractor only at and from each business address registered with dems

注冊電業承辦商只限在已向機電工程署署長注冊的各營業地址從事或開展電業承辦商業務。

If evidence shows that he has violated the regulations during the on - site inspections, dems will take disciplinary or prosecution action against him, depending on the evidence collected

如果在實地檢查時發現證據，顯示他違反規例內所述的規定，機電工程署署長會視乎所得證據施行紀律處分或提出檢控。

Where the director of electrical and mechanical services ( dems ) considers that an electrical product does not meet the prescribed safety requirements, he may prohibit its use andor supply under section 25 of the eo

根據電力條例第25條的規定，倘機電工程署署長認為某一電氣產品不符合訂明安全規格，可禁止使用及或供應該產品。

Nowadays, dems at four map - scale levels of have been constructed in china. faced on the huge quantity information saved in the databases, we believe that a careful researching and mastering the theories and techniques of spatial data mining from dems have vital significance

目前，我國測繪部門已基本上完成了4級比例尺dem建設，面對海量的信息，研究與掌握基於dem空間數據挖掘的理論與方法，對于指導dem及其相關空間數據的應用具有及其重要的意義。

The regulation empowers the director of electrical & mechanical services ( dems ) to require the supplier of any electrical product, which is found not complying with the applicable safety requirements, to notify those to whom he has supplied the product of the hazardous defects in the product, to accept a return of the product, to refund the purchasers, and to notify the public of the matter through television, newspapers and other effective means

該規例賦予機電工程署署長權力，可規定供應不符合適用的安全規格的電氣產品的供應商，回收該電氣產品，包括將有關產品中可能產生危險的不妥善之處通知購買者，接受該產品的退貨，付還購買者就該產品所支付的任何款項。署長亦可要求供應商透過電視、報章及其他有效方法公布有關事宜。

Section 11 of the epsr further empowers dems to serve on the supplier of the electrical product concerned a written notice requiring the supplier to notify the purchasers about the hazardous defects in the product, accept a return of the product and refund the purchasers any sum paid for the product subject that a receipt for the product is surrendered. a person who is served with such a mandatory recall notice and fails or refuses to comply with it commits an offence

電氣產品（安全）規例第11條更授權機電工程署署長可將一份書面通知送達有關電氣產品供應商，規定該供應商將產品中可能產生危險的不妥善之處通知購貨人、接受該產品的退貨，以及當購貨人出示產品收據時，付還購貨人就該產品支付的任何款項。

Real _ time requirement and time sequence consistency are important symbols in dems, the paper analyses thoroughly factors that system real _ time is restricted, and merits that main memory is used as a storage medium. in order to satisfy system real _ time and openness, distributed database in experiment & measurement system unites real _ time main memory database and sql server 2000. the paper discusses the time sequence consistency in dems and introduces the concept of absolute time sequence consistency and relative time sequence consistency

實時性及時序一致性是試驗與測試系統分佈數據庫性能的重要標志，論文深入分析了制約系統實時性的因素及以內存為存儲介質的優點，為滿足系統的實時性與開放性，引用了實時內存數據庫與sqlserver2000相結合的試驗與測試系統分佈數據庫設計思想；時序一致性表現為絕對時序一致性和相對時序一致性兩方面，結合試驗與測試系統自身特點，利用優先級解決絕對時序一致性和用數據視圖解決相對時序一致性問題。