種群過密 的英文怎麼說
中文拼音 [zhǒngqúnguòmì]
種群過密
英文
overpopulation-
Studies by hargrave and geen estimated natural community graz - ing rates by measuring feeding rates of individual zooplankton species in the laboratory and then computing community grazing rates for field conditions using the known population density of grazers
由哈格雷夫（ hargrave ）和吉恩（ geen ）所進行的研究，對自然條件下的群落食草比例進行了估計，其手段是通過測量出實驗室內單獨的浮遊動物種類的結食比例，然後利用已知的食草動物種群密度，計算出實地狀況下的群落食草比例。Previous researchers have always determined the sp atial distribution patterns ( sdp ) of castanopsis kawakamii with a sample - dis tance method. however, the distribution patterns may be affected by the quadrat si ze and, in the course of analysis, the density differences among the cluster plots are not considered ; therefore, differences of cluster plot size and the dispersi on degree among individuals of cluster plots can not be known. authers of this pa per have determined the spatial distribution patterns of castanopsis kawakamii population in different habitats by means of non - quadrat distance method and a nalysed the pattern intensity and grain of the sdp. the pattern intensity is defi ned with the relative density differences and the pattern grain can embody the d ispersion degree of the individuals in the plots, and the dispersion degree among the plots. the determined results are as follows. the intensities of the species range in order from strong to week : litsea mollifolia p. kawakamii i. purpure a r. cochinchinensis c. kawakamii c. carlessii d. oldphamii s. superba. the gra ins of the species queue in order from coarse to close : s. superba = litsea mollif olia r. cohinchinensis c. kawakamii = i. purpurea c. carlessii p. racemosam d. oldp hamii. these determined results tally basiclly with the results authers of this paper have got in determining the same plots by means of aggregate index access ing method. in view of this, it is held that the sdp of c. kawakamii is closely related to the habitats and biological features
前人都是採用樣方方法對格氏栲種群數量的空間格局進行測定，而格局分佈有可能受樣方大小的影響，且分析過程中沒有涉及聚塊間密度差的問題，因而無法掌握種群的聚塊大小差別及聚塊內個體間的離散程度.本研究採用無樣方距離法，測定不同生境的格氏栲種群空間格局，分析格氏栲種群格局的強度和紋理.強度以聚塊和間隙的密度差來定義，紋理則是體現聚塊內個體間的離散程度與諸聚塊間的分離程度.測定結果表明，格氏栲種群格局強度從高到低排列次序為：木姜子蚊母樹冬青茜草樹格氏栲米櫧虎皮楠木荷；格局紋理從粗到細的順序是：木荷=木姜子茜草樹格氏栲=冬青米櫧蚊母樹虎皮楠.這一測定結果與作者採用聚集度指標測定相同樣地格氏栲種群空間格局的結果基本相符.因此，格氏栲空間格局類型及分佈與格氏栲生物學特性及生境的關系密切Meanwhile, the study also shows that the diversity of studied cave animals is inversely proportional to human population density and water quality ; and bio - diversity, to some extent, is proportional to soil fertility and amount of chemical fertilizer, but inversely when excessive ; the correlativity between bio - diversity and vegetation cover rate is not obvious, when ground vegetation is strongly interfered by human being ; the amount of diestrammena marmorata is proportional to the d iversity of plant, and inversely proportional to soil fertility, and in a way, to water quality ; and the correlativity between community and water quality and soil fertility, and between water quality and the amount of mosquito and fly, is not as good as expected. the author points out that diestrammena marmorata, bat, mosquito, fly, oreolalaxrhohostig metus ( or cudata ), and fish can be chosen as in
同時，研究還表明：調查洞穴的物種多樣性與人口密度、水質成負相關；在一定范圍內，物種多樣性與化肥施用量、土壤肥力成正相關，超過一定的值則成負相關;在人類對地表植被的高強度作用下，物種多樣性與植被覆蓋率的相關性不明顯;蚊蠅數量與土壤肥力基本上呈正相關;斑灶馬數量與植物種數呈正相關，斑灶馬數量與在一定水質范圍內與水質呈負相關，與土壤肥力呈負相關;群落數與水質和土壤肥力、蚊蠅數量與水質都不能表現較好的相關性;研究認為，可以選擇斑灶馬、蝙蝠、蚊蠅、紅點囊蟾（或有尾類） 、魚類等作為指示動物對洞穴環境進行監測。Culture solution of hydrodictyon reticulatum has been separated with membrance of 0. 2um, 0. 45um, and then microalgae is cultured with the separated solution. the results show that the mechanism that hydrodictyon reticulatum restrains microalgae is closely related to the chemical interference to microalgae from biometabolism of hydrodictyon reticulatum besides their resource competition. we also find that there are two main functional substances in permeated solution with membrance of 0. 45um, one substance is beneficial to other algae, the other can restrain growth of algae
水體富營養化藻類資源竟爭與種群演替規律的初探中文提要通過用0 . 20以m ， 0 . 45林m膜對水網藻培養液的分離，再分別用分離液來馴化、培養微藻，結果發現，水網藻對微藻的抑制機理除與之進行資源競爭外，還與水網藻的生物代謝物對微藻的化學干預作用密切有關。Second, it must follow the principle of maximizing cost effectiveness to choose models of medical security system and to set priority of the system. third, medical security should be combined with public health that focuses on health prevention to fully utilize limited health resources for the best results. fourth, the establishment and promotion of medical security system should be in consistent with development of economy and level of income as well as the state financial ability
完善「一個制度」是指在堅持社會統籌和個人帳戶相結合的原則下，改革和完善現有的城鎮職工基本醫療保險制度，通過逐步擴大覆蓋范圍、合理調整繳費分擔比例、完善統籌基金支付政策、擴展個人帳戶使用范圍，將醫療保障制度與以預防保健為主的公共衛生服務體系緊密結合，逐步形成適應城鎮大多數人群的、多種形式的社會醫療保險制度。Labour union and government are in defending the people of the whole country is completely consistent on interest and working - class interest, regard working - class masses as constituent labour union, ought to support oneself government, assist a government to begin the work, uphold governmental authority ; the government ought to rely on the working class heart and soul, support labour union lawfully exercise right, through multiform strengthen the connection that is the same as labour union, to a few major problems, involve a worker especially the problem of personal interest, ought to listen to the opinion of labour union and broad worker masses seriously, in order to improve governmental work, close government is the same as the connection of worker masses
工會與政府在維護全國人民利益和工人階級利益上是完全一致的，作為工人階級群眾組織的工會，應當支持自己的政府，協助政府開展工作，維護政府權威；政府應當全心全意依靠工人階級，支持工會依法行使權利，通過各種形式加強同工會的聯系，對一些重大問題，非凡是涉及職工切身利益的問題，應當認真聽取工會和廣大職工群眾的意見，以改進政府的工作，密切政府同職工群眾的聯系。The system could move forwards at the speed of 1 m / a or the patches shifted their sites each other, which led to the clone population and maintained its stable state in even large area
同時，林緣擴散種群具有密度大、生產力高等特徵，但其生物量積累和自然稀疏過程與有性植物種群具有相同的規律。Under the leadership of loca i party committee, they organized and mobilized party members, cadres, members of youth league and the activists among the non - party members, in light of their respective working system, to establish a huge propagandistic body of the mass, with the propagandists and reporters as the backbone of the system. after receiving a brief training, th i s body f o i i owed some special procedures to go to all walks of life to do political mobilization and current affairs and production propaganda, to coordinate all the political movements
在各地黨委的領導下，以宣傳員和報告員為骨幹，組織動員廣大黨員、幹部、團員和非黨積極分子，按照各自的工作系統，從上到下，建立起一支龐大的群眾宣傳工作隊伍，經過短暫的訓練后，根據統一確定的宣傳方針、內容、任務和步驟，按各地區分工負責，分片包干，採取各種宣傳教育方式和途徑，深入到工廠、農村、街道、機關、學校，進行廣泛的政治動員和時事政策與生產宣傳，密切配合各項政治運動，開展深入細致的思想政治工作。It was found that high transplantation efficiency and stable production can be achieved by improving egg fertilization, and egg stocking pattern, by high density of fertilized eggs, and by fertilization and feeding
結果表明，通過控制受精卵的質量，選擇適宜的投卵方式，保持比較高的受精卵投放密度，並在形成較大種群時進行施肥，增加餌料生物量等方法，可提高移植增殖效果，獲得持續穩定的高產。The discussion of cultural construction mode in baibuting community is developed as following : the first part presents author ' s motivation in carrying out the research, defining some concepts and introducing a few common modes of cultural construction in urban communities. the second part is a detailed description of fundamental ideas and content, advocating the notion of " human oriented, moral centered, law abiding, trying to creating a modern community with the capacity of sustainable development ", introducing its unique homestead culture. the third part sets forth the innovation of community culture construction modes in baibuting community : in order to create a, human - oriented community culture, establish a peaceful and content environment for the socialism ideology, the baibuting community made innovation on community management system ; by the analysis of the occupational statistics and object groups, the author found out that most of residents come from the middle class ; then, the author gives the definition of middle class and its general features in a sociological perspective ; finally, the thesis analyses the characteristics of the community residents " pursuit of culture and the harmonious development of community culture in aspects like value system, consumption habits, cultural needs
本文通過理論學習，對百步亭花園社區文化建設的模式進行了探索研究，在現狀調查過程中，筆者發現百步亭的社區文化建設之所以成功，除了開發商和物業管理中心的組織建設外，還有小區居民的積極參與合作，三者密不可分，而這又與居民所屬的階層文化訴求密切相關，於是，本文就百步亭社區文化建設模式作了論述，思路如下：文章的第一部分：提出本文研究的緣起，並對一些與本文有關的概念作了界定，還介紹了幾種城市社區文化建設的一般模式；文章的第二部分：介紹百步亭花園社區文化建設模式的基本思想和內容，提出了「以人為本、以德為魂、以法為行，努力創造可持續發展的現代文明社區」的口號，並介紹了其獨具特色的家園文化；文章的第三部分：對百步亭社區文化建設模式的創新作了論述：百步亭社區為了營造以人為本的社區文化，構建社區安居樂業工程，為社會主義思想道德體系提供良好的社會文化環境，在社區管理體制上作了創新；還通過對百步亭社區居民的職業統計，來源群體，分析出其從屬的社會階層主要是社會的中間階層；再次，從社會學角度，定義了中間階層及一般特徵；最後從價值觀、認同感，消費觀念、文化需求等方面，分析了其文化訴求的特徵和與社區文化的協調發展；文章的第四部分：從整合功能和導向功能兩方面總結了百步亭社區文化建設的社會效應；並對百步亭社區文化建設模式的不足提出了意見和建議。The neglecting of the social contact activities in the design process will bring on a series of social problems, such as make the residents indifferent to each other, and the environments lack of spirits. in order to solve these existing problems, this thesis focus on the social contact space of neighborhood in the residential area, take the point of the architectural spatial view, and the study is based on the relationship between social contact activities and the environment. the study process is : first of all, the social contact space is divided into three levels, according to the territory and proximity of people, the communication ways which are different in space scale, and the attributes of the residents
針對這種情況，論文以居住小區鄰里交往行為與空間環境的關系為基礎，從建築空間角度對城市居住小區戶外鄰里交往空間進行系統研究，具體的研究過程是：首先，根據人們在鄰里交往空間中不同領域范圍交往活動的心理感受、交往方式、交往人群的差異，將居住小區戶外鄰里交往空間劃分為公共? ?半公共? ?半私密三個層層銜接的基本空間層次，即鄰里中心交往空間，宅前交往空間和戶前交往空間，以此作為論文研究的基本框架。Secondly, some encryption algorithms are introduced, with the analysis and comparison for these encryption algorithms, the author designs an appropriate project to accomplish the end - to - end encryption. thirdly, this paper accomplish the design of an encryption scheme which combining the strongpoint of the rsa algorithm and the idea algorithm. the main process is as following : first, input the digital signal to the encryption device, and then the digital signal exclusive or with the keying sequence which is generated by key stream generator ( ksg ) and the ksg is based on the idea encrypting and deciphering algorithm, the secret key synchronization is also studied
本課題主要研究的內容是數字集群通信系統加密機制的研究，首先介紹了數字集群通信系統的安全保密機制，講述了單向和雙向鑒權的過程、單呼和群呼的空中介面加密過程及其密鑰的選用和管理，特別介紹了端到端加密;然後介紹了幾種常用的加密演算法，通過分析其優劣，提出了端到端加密的解決方案;最後完成了基於rsa演算法和idea演算法的數字集群通信系統加密方案的設計，其具體過程為將經過數字信號送入加密器里，和以idea加密演算法為基礎設計的密碼流發生器（ ksg ）產生的密碼序列進行加解密運算，並且研究了此加密過程的密碼同步問題。The more wheat leaves the larvae encounter, which means more interference is met during predation, the lower the predation efficiency is observed. 4. in the situation of lack of prey, the average survival time of e. balteatus larvae, whose growth stages are 0 h, 24 h, 48 h and 72 h, are 1. 53 d, 2. 48 d, 3. 06 d and 3. 75 d respectively
首次通過饑餓試驗表明生長發育0h 、 24h 、 48h 、 72h的黑帶食蚜蠅幼蟲在完全饑餓條件下平均分別可以存活1 . 53d 、 2 . 48d 、 3 . 06d 、 3 . 75d ，耐饑餓能力強，在獵物密度比較低時，可以維持一定的種群數量。This thesis holds that the agricultural products exports assistant measures of the united states is characterized by global market strategy, many kinds of program, advanced management and perfect measures, highly beneficiary participation in decision - makings, good combination of function, power and responsibility, market - oriented decision - making and market competitive means in program application, carefully considering details in administering program
本文認為美國農產品出口支持措施具有以下特點：全球市場戰略；項目種類繁多；管理先進，措施完善；政策制定和執行過程中利益群體和公眾參與度高：政策執行部門職能、權力、責任相統一；政策制定和執行以市場為導向，在項目的申請中運塒市場競爭手段；項目執行的細節考慮很周密。In the same time we also use it to test the power of dc crossover. in this algorithm every element in the population a domination count is defined together with a neighborhood density measure based on a sharing function. those two parameters are then non - linear combined in order to define the individual ' s fitness
演算法通過計算種群中pareto優于某個個體的個體數目以及個體所在位置的密集度來定義適應度函數，多個算例的測試結果表明該演算法結合錯位交叉運算元具有較好的性能，能夠使演算法收斂到pareto概念下的比較均勻的一組非劣最優解。Firstly, the author analyses the external environment of the it enterprises in zhongguancun. secondly, combining the current situation of the it enterprises with timmons ' s theory of three key points, the author divides the it enterprises in zhongguancun into three management models - - - - - - family model, estimating large company and inner entrepreneurial model. through comparison to the three models and the deep analysis of the entrepreneurial company, the paper comes to a conclusion that management transformation must be carried out during the different period of development
論文首先對影響中關村it企業創業及成長密切相關的區域、行業、政策、人才、資本、與技術環境進行分析，其次通過中關村it企業群現狀的分析指出目前中關村所面臨的最大問題是企業長不大，繼而通過提摩三要素對其創業管理模式進行歸類分析，在結合中關村創業發展階段和當前創業趨勢的情況下，指出中關村當前主要存在「泛家族」 、 「大公司模仿」 、和「內創業」三種管理模式。Labor intensive industries adapting to local situation should be developed and enhanced, such as township enterprises, for providing off - farm opportunities to on - spot labor transferring, along with the rural industrialization and urbanization. at the same time, relevant departments should pay more attention on human resources investment, through enhancing farmers education and their quality for improving the capacities of farmers to choose and find jobs. another important solution is to organize the labor transferring, from transferring without plan and purposes to transferring with confirmed purposes, to increase the transferring efficient and transferring ratio
在以上分析的基礎上，提出本文的建議：應該大力發展和鞏固適應農村特點的勞動密集型二、三產業，尤其是鄉鎮企業，在推進農村工業化和城鎮化的同時，增加大量非農就業機會，促進勞動力的就地轉移；同時，從人力資本投資角度出發，通過多種多樣的形式，加強農民的教育，逐步提高農民的素質，幫助他們掌握一技之長，增強農村勞動力自主擇業和從業的能力；同樣重要的是，加強農村勞動力轉移的組織，從嘗試盲目的轉移到有目的的轉移，提高農村勞動力的轉移效率，從而促進轉移比例的提高；對于不同的社區，推進勞動力轉移的進程中，要注意對一些特殊群體? ?比如女性勞動力的轉移採取一系列的促進工作。According to the recent practice of towns concentrated areas in zhejiang, this paper analyzes the problems existing in the " zhejiang mode ". based on the historical background and new tendency of urban economy development, it points out that the " sub - center concentration " area is a typical evolvement mode of urban group space
本研究針對目前省內城鎮密集地區發展的實踐熱潮，通過對「浙江模式」的分析與總結，提出「亞中心極化」地區演化模式是在歷史背景和新的城市經濟發展趨勢下所產生的一種典型的城鎮群體空間演化模式。For the parallel analysis, several interfaces have been developed, on one hand, in order to parallelize the existing serial fea codes and make the system practical, some parallel solver library has been integrated into ooparafea ; on the other hand, ooparafea can also integrate self - developed module into its analysis kernel, in fact, it has already integrated parallel cg solver and parallel pcg solver up to now. in webfea, just like other parts in netfeaf, the class hierarchy ( including two dimension fea class library, three dimension fea class library, internet based fem computer aided instruction and so on ) is introduced first, and the control center which integrated httpserver ( used for building internet project web site ) and computingserver ( dealing with different computing tasks ) takes charge of the whole system. netgrawcad is the application of netfeaf in civil engineering, which offers civil engineers a network based works
論文還開發了全新用途的網路服務中心，包括http服務器、計算服務器，以及各種用途的計算客戶端：利用java語言的網路通信、界面處理能力結合集群的密集并行計算能力一起完成特定的計算任務，從而使集群計算與web計算很好的集成在一起； webfea作為一種應用客戶端，配合netfeaf集成系統的各個計算組成部分，可以實現一個比較全面的有限元分析方法的計算機輔助課件；當前基於web的各種應用越來越廣泛，但將基於網路的工程設計與有限元分析系統的面向對象構建其引入有限元分析以及土木工程設計領域還不多，基於netfeaf系統，作者又利用面向對象的方法實現了基於網路的重力式碼頭cad集成系統，以從根本上改變傳統的工程分析設計軟體的運行思路，使網路變成土木工程師的日常工作中心，系統部分成果通過鑒定（文通部鑒定為「國內領先，可以大大提高設計效率，建議在水運行業內盡快推廣使用」 ）推出后的良好試用效果，使面向對象的方法在土木工程分析設計軟體系統研製中的優勢得到進一步驗證。Software development is a cooperative process of group, which requires the members to undertake the work mutually, cooperate closely and finish the common tasks interactively
軟體開發是一種群體協作過程，要求團隊成員在開發活動中相互分工、緊密協作，成員通過扮演角色交互的完成共同任務。分享友人