closed population 中文意思是什麼

closed population 解釋
閉鎖群體
  • closed : adj. 1. 關閉著的，封閉著的；密閉著的；保密的。2. 〈美國〉準備好了的；定了契約的。3. 【語音】閉音節的。
  • population : n. 1. 人口；人口總數；全體居民；人口的聚居。2. 物的全體[總數]；【生物學】蟲口；種群（量）；群體；族，組，個數；【統計學】對象總體，全域。3. 【物理學】布居；密度。4. 〈罕用語〉殖民。
  1. Dynamics of sophora davidii population in a hilly region closed for thirty years in loess plateau

    黃土高原丘陵溝壑區封禁30年前後狼牙刺種群動態研究
  2. In terms of less population and properties affected, the frontier closed area may represent a potential area to fulfill the needs for housing and economic development in the longer term and could be development opportunities in scenario testing to meet a very high growth of populating job opportunities in the study timeframe. moreover, with the stronger economic relationship between shenzhen and hong kong than before in view of the growing cross - boundary activities, the frontier closed area may be potential location to promote spatial and economic linkage between the two places

    邊界禁區影響較少的人口及物業，該處或可滿足長遠的房屋及經濟發展需要。再者，該地區亦為不同方案中的發展機會，以應付高增長的人口，綜觀深港的跨界活動日趨頻繁，兩地的經濟關系益見密切，邊界禁區或會是一個理想地點，促進兩地在空間及經濟上的聯系。
  3. In chapter 2, we analyzed the effect of the driving field phase fluctuation on the gain and dispersion and population differences in an open v - type three - level non - inversion lasing system and then discussed the effects of the incoherent pumping rate, the ratio of the atomic injection rates, the atomic exit rate, the rabi frequency of the probe and driving fields and their corresponding detuning on the gain, dispersion and population differences of the system, and got some important conclusions different from those in closed or other open systems

    第二章討論了驅動場的相位漲落對開放的v型三能級無反轉激光系統的影響，根據解析解的數值計算結果討論了非相干泵浦速率、粒子注入速率之比、粒子退出速率、探測場和驅動場的rabi頻率和相應失諧對系統增益、色散和粒子數差的影響，得到了一些不同於封閉的v型系統及其他開放的無反轉激光系統的重要結論。
  4. In chapter 3, we studied the effect of gaussian transverse profile for the driving and laser fields on lasing without population inversion ( lwi ) in a closed v - type system and an open v - type system. moreover, we discussed also the effect of the unsaturated gain coefficient, the cavity - damping rate, the ratio of the atomic injection rates and atomic exit rate on the corresponding systems. in chapter 4, we mainly discussed the effect of doppler broadening on the gain, dispersion and the frequency up - conversion of the open v - type lwi system and compared the differences and the same between the open system and the corresponding closed system

    發現： （ 1 ）在考慮doppler展寬的情況下，通過選取合適的實驗室條件（比如合適的原子環境溫度等）可得到合適doppler展寬值，從而使系統獲得最佳增益； （ 2 ）要想實現系統的頻率上轉換，同時又要獲得足夠強的無反轉激光增益，則系統頻率轉換比不能選取的太大； （ 3 ）對于開放系統，比較小的粒子注入速率比與退出速率對產生無反轉激光是有利碩士學位論文摘要的： （ 4 ）由於dopp1oy展寬的存在，當探測場與驅動場的傳播方向相反時，增益在探測場失諧的某一段區域產生振蕩，且振蕩的振幅、頻率失諧范圍的大小與dopper展寬的取值有關。
  5. We got the spatial distribution map of population density by spatial interpolation, in which the population data are distributed on the grids. the results of the distribution of interpolated based on gis is closed to a real population distribution. the combination of the spatial interactive models and a shortest path algorithm for public transit network is analyzed by supermarket ' s accessibility based on pedestrianism and public transit. this methods may be used to investigate potential supermarket ' s locations. the quantitative analysis about the supermarket ' s market area is realized based on trade mode of lashmanan and hansen, which mainly includes spatial distribution of population, traffic accessibility and free competition between different firms

    文中應用空間內插技術實現了人口數據空間分佈化，將人口數據通過空間插值分佈於研究區域內，使人口空間分佈更接近實際；應用公交最短路徑演算法及空間相互作用模型實現了基於步行和公交出行的超市可達性，將交通對超市選址的影響定量化，方便了方案的比選；在綜合考慮人口空間分佈、超市交通可達性、現有零售商業競爭態勢的基礎上，基於拉、漢購物模式實現了超市商圈定量分析。
  6. With the declining vietnamese population, the new horizon vietnamese refugee departure centre was closed in march and the high island detention centre, hong kong s last vietnamese detention centre, formally closed in may

    隨著越南人人數不斷下降，新秀越南難民離港中心已於三月關閉，而本港最後一個越南船民羈留中心? ?萬宜羈留中心，也於五月正式關閉。
  7. There is closed relationship in the spatial distribution of roads, stations and population, so the author tries to reveal this relationship then build mathematical models according to the number of the per capita stations and the per capita roads length on the base of the analysis of distributing features of public traffic facilities and population

    而道路、站點與人口的空間分佈又存在著緊密的聯系，本文將在分析上海公交設施設置與人口分布特徵的基礎上，運用人均路長、人均站點數據揭示兩者關系，並最終建立相關模型。
  8. The current situation of the human resource in the area of northwest of china and the cause of its formation. when the quantity of the human resource, its culture quality and the efficiency of its use, as well as its condition of being distributed in different industries is analyzed, the typical characteristic of the human resource in the area of northwest of china has been discovered in the following : ( 1 ) the human resource is rich in quantity and has a higherich in quantity and has a higher ; ( 2 ) its labour force has a lower quality, and the resources about science, technology and education are inequality in this area ; ( 3 ) the problem of being short of talented people is serious ; ( 4 ) the talented people now available is inequality in different industry, and the labour force mainly depends on their physical strength, and then, the cause for this phenomenon has been discovered in the following : ( 1 ) because of the local population policy, the population in this area increased rapidly ; ( 2 ) the backward economy impacts the human resource on its education and employment level ; ( 3 ) for its poor natural conditions, a closed and backward idea is formed in some peasants and herdsman ; ( 4 ) the lack of the mechanism of encouraging competition in personnel policy and scientific research field resulted in the loss of the vast number of talented people and inefficient in its use

    西北地區人力資源開發現狀表現為：人力資源數量豐富，其中少數民族人口比例較高；人力資源文化素質水平較低；對現有人才資源使用效率不高；人力資源在產業間分佈不平衡，就業層次較低。造成問題的原因有：少數民族的人口政策是造成西北地區人力資源數量增長過快的重要原因；經濟發展水平制約了人力資源受教育的程度和就業層次；閉塞的自然環境，使人們難以突破封閉、陳舊的觀念；人事管理制度缺乏競爭、激勵機制，造成了人力資源使用效率不高。經過了理論分析和現狀調查之後，得出了人力資源開發的理性思考，即充分認識人力資源開發的戰略意義；發展教育是人力資源開發的前提條件；人力資源開發過程中要高度重視人才引進戰略的實施；人力資源開發要從本國（或本地區）實際出發，突出特色。
  9. A series of institutional changes have gradually closed the rift of urban and rural development under the traditional institutions since reform and opening up, which provide larger spaces for the development and space collection of non - agricultural industry and rural population entry into urban areas that push forward china ' s urbanization progress forcefully

    改革開放以來的一系列制度變革逐步彌合了傳統體制下城鄉發展的割裂狀態，為非農產業的發展與空間集聚以及鄉村人口進入城市提供了較大的空間，有力地推進了城市化進程。
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