models of water quality 中文意思是什麼

models of water quality 解釋
水環境生態學模型
  • models : 模特
  • of : OF ＝Old French 古法語。
  • water : n 1 水；雨水；露；〈常作 pl 〉 礦泉，溫泉；藥水。2 〈常 pl 〉水體；水域；水道；海；湖；河；海域；...
  • quality : n 1 質，質量；性質，特質；品質，品位。2 優質，美質，優點。3 才能，能力，技能，素養。4 品種。5 身...
  1. Finally, by analyzing the models, the paper puts forward the following measures to reduce the moral hazards of water quality management of water resources of east route of south to north water transfer, including : enhancing investment in water quality inspection ; perfecting supervision mechanism ; perfecting water right market ; making proper penalty clauses ; establishing water - use credit mechanisms of water users ; reducing information asymmetry ; adjusting industrial structure ; enhancing the development of social economy ; and improving sewage disposal techniques

    對兩個模型進行分析，並提出了降低南水北調東線水資源水質管理道德風險的措施：加強水質檢測投資，完善監督機制；完善水權市場；制定適當的懲罰條款；建立水用戶的用水信用機制，降低信息不對稱的程度；進行產業結構的調整，加強社會經濟的發展；提高污水治理技術水平。
  2. Zhang lixia ( water conservancy engineering ) supervised by professor shi kebin this paper mainly discussed a method for multi - goal network ' s optimization. since the network plan was brought forward, the criterion for evaluating network was time cost resource all along. in this paper, through massive study on achievements the predecessors had done the author posed a new criterion : quality, and set up the network ' s quality model ; simultaneously, the author established the network ' s multi - goal model by synthesizing the existing optimum models, also found the finite not bad solution of the model ; because the four goals was in contradiction with each other, using the multi - goal decision theory can optimize the network project scientifically and objectively

    本文在對前人關于網路計劃研究結論的總結分析的基礎上，探討了評價網路計劃優劣的各準則，提出一種新的評判準則：工程質量，並建立了網路計劃的工程質量模型；針對目前網路計劃多是單目標的優化，綜合網路計劃就各目標優化方法的研究理論，建立了網路計劃的多目標模型，並將工程質量模型融入其中，根據網路計劃的特點，解出該模型的有限個非劣解；由於各優化目標之間的矛盾性、不可公度性，用多目標決策理論的方法，科學而客觀地對網路計劃進行了多目標優化，從而避免了人為決策的盲目性、主觀性。
  3. In this paper, river water quality prediction is integrated with water pollution control measures. two parameters, water environmental capacity and pollution index are selected for pollution control measures. the objective is achieved after the development of simulation model using one - dimensional advection dispersion equation. the model algorithm and computer program is an improvement over the existing water quality models, since the model solution involves four point implicit upwind schemes for water quality prediction and pollution control measures at each grid point. model simulation results the assessment of water environmental capacity that yield the acceptable and realistic pollutants concentration in order to maintain water quality objectives. the pollution and overall pollution index of the river is suggested for integrating number of contaminants variables into one index. study provides the mathematical and scientific procedure for water quality management. the new approach is helpful for the water pollution control and to study the impacts of waste effluents on the river system for strategic planning purposes

    本文將水質預測及水污染控制措施有機地結合，選取水環境容量和污染指數作為水污染控制的參數.這樣，一維對流-擴散水質方程的求解除就是實現本研究目的的關鍵.本研究採用的模型在現有的水質模型基礎上有所改進，因為其採用四點隱格式對水質進行預測，推求可接納污染物的環境容量值及為保證水質而限定的污染物濃度值，從而制定相應的水污染控制措施.為整體考慮各種污染物的情況，建議採用河流的污染指數進而推求綜合污染指數.總之，本研究為水質保護提供了科學的計算方法，該法對水污染控制及污水對河道水質的影響是實用有效的
  4. Abstract : in this paper, river water quality prediction is integrated with water pollution control measures. two parameters, water environmental capacity and pollution index are selected for pollution control measures. the objective is achieved after the development of simulation model using one - dimensional advection dispersion equation. the model algorithm and computer program is an improvement over the existing water quality models, since the model solution involves four point implicit upwind schemes for water quality prediction and pollution control measures at each grid point. model simulation results the assessment of water environmental capacity that yield the acceptable and realistic pollutants concentration in order to maintain water quality objectives. the pollution and overall pollution index of the river is suggested for integrating number of contaminants variables into one index. study provides the mathematical and scientific procedure for water quality management. the new approach is helpful for the water pollution control and to study the impacts of waste effluents on the river system for strategic planning purposes

    文摘:本文將水質預測及水污染控制措施有機地結合，選取水環境容量和污染指數作為水污染控制的參數.這樣，一維對流-擴散水質方程的求解除就是實現本研究目的的關鍵.本研究採用的模型在現有的水質模型基礎上有所改進，因為其採用四點隱格式對水質進行預測，推求可接納污染物的環境容量值及為保證水質而限定的污染物濃度值，從而制定相應的水污染控制措施.為整體考慮各種污染物的情況，建議採用河流的污染指數進而推求綜合污染指數.總之，本研究為水質保護提供了科學的計算方法，該法對水污染控制及污水對河道水質的影響是實用有效的
  5. Review of water quality models for sediment - induced pollution

    泥沙污染水質模型研究綜述
  6. Selection and systematic integration of numerical models for water quality forecast in three gorges reservoir

    三峽水庫水質模型的選取和系統集成
  7. Modeling water quality forecast models for integrate rebuilding of chuanzihe river

    常德市穿紫河綜合整治工程水質預測模型的建立
  8. But, when the total water quantity is reduced 30 % of present average amount in the 2010, the total salinity of groundwater will have significant increase in the different period ( pre - summer irrigation, post - summer irrigation, pre - autumn irrigation and pre - freezing up of soil four periods ). the water quality will be likely to deteriorate ; in addition, the prediction models of soil moisture and saline concentration are established

    通過試區土壤水分、鹽分的bp與rbf模型的模擬與檢驗，預測了2005年、 2010年夏灌前、夏灌后、秋澆前與封凍前的土壤水鹽狀況，得出上壤水分隨著灌水量的減少呈下降趨勢，而土壤鹽分在淺層與中層呈現出不同的結果： oa
  9. Associated with the project of numerical modeling of hydraulics and water quality in hongzehu river networks in the north of jiangsu province, which founded by the department of environment of jiangsu government, two models of water quantity and water quality are developed. on the basis of the results from the numerical simulation, the assimilation capacity of the hongzehu river networks are studied

    本文結合江蘇省環保廳的「江蘇省水環境容量研究」課題，對江蘇北部洪澤湖及周邊河網水系建立了河網與湖泊耦聯的水力?水質模型，並在湖泊水系的水量、水質數值模擬的基礎上，對該水系的水環境容量進行了研究。
  10. The partly gas stratum produce the water in the past logging interpretation method ca n ' t distinguish them easily. according to the logging and brothel logging shows and testing results, this thesis will utilize the cross - plot analysis technology to look for the qualification and quantity index of the containing water and gas by mutual comparison, triumphantly discern the containing gas and water quality in the store stratum ; using b - p network can recognize the reservoir ; the utilize the fuzzy cluster analysis technology to cluster analyze separately the water well section and water quality well in the store stratum, settle the type datum and central type distinctly and analyze fluidity ' s material quality and diversity in all models and others store stratum, triumphantly distinguish the diversity of the containing water and gas

    本次論文以鉆井錄井顯示和測試結果為依據，利用交會圖分析技術，相互對比尋找出區分含水與含氣的定性與定量指標，成功地對儲層含氣、水性質進行了識別；利用bp網路分析識別儲層類型，利用模糊聚類分析技術，將測試產水井段與產水井段數據分別作聚類分析，確定出各自的類數和類中心，建立起聚類模型，將所建模型對其它儲層段進行含流體性質及差異分析，成功地對含氣性差異進行了判別。
  11. There are many plants that have the character of time - varying, large delay, large inertia in the process of production of modern power station such as the superheated steam temperature, the reheated steam temperature, the water treatment of boiler and the load regulation. some of them have the strong character of nonlinear and some of them are multivariable coupling systems it is very difficult to obtain good effect of control by conventional pid control. it is necessary to set up the mathematics models of controlled plants if applying control means of modern control theory such as self - adaptive control, optimal control ， decoupling control and predictive control. and these control systems have large calculation and bad character of real time in general. these disadvantages make them be not able to meet the need of real production process and limit the application of them in modern power station. now the generator units are developing towards large capacity and high parameters. many new kinds of generating electricity means are coming into being. the characers of production units of power station become more and more complex but the demand to quality of control becomes more and more strict. the new control means are in bad need to control them effectively

    現代電站的生產過程中存在過熱汽溫、再熱汽溫、鍋爐水處理、負荷調節等許多大遲延、大滯后、特性時變的對象，它們中有些還是具有強非線性特性的對象或多變量耦合系統，採用常規的pid控制手段很難取得良好的控制效果。若應用現代控制理論中的自適應控制、最優控制、解耦控制、預測控制等控制手段，則需要建立被控對象的數學模型，而且往往控制系統的計算量大、實時性差。這些缺點使其很難滿足實際生產過程的需要從而極大地限制了其在現代電站中的應用。
  12. Based on tiansha river water diversion flow strengthen project in jiangmen, the hydraulics and water quality characteristics in tidal rive networks have been simulated numerically. zero - dimensional and one - dimensional hydraulic models have been applied. this paper presents the concept of roughness optimization

    採用零維及一維水力模型，結合江門市天沙河引水增流工程項目，對感潮河網的水力水質特性進行了數值模擬，提出河道糙率優化概念，為感潮河網的納潮沖污，改善水環境提供了理論依據。
  13. Qiandaohu lake was very famous for its clean water quality. but in recent years the water body has become seriously eutrophic especially during summer months in some areas of the lake and came to the attention of national, provincial and city environment protection agency. the main objective of this study involved the following : sampling and monitoring water from the lake ; water quality assessment and biological assessment ; ascertain the limiting factors for phytoplankton growth ; fuzzy cluster analyse of water pollution of all sampling points ; predicting total phosphorus concentration in the lake by using static models ; setting up regression models and their application ; setting up an eco - dynamic model and its simulation

    本研究根據1998 - 2000年連續監測數據，對千島湖進行了水質評價和生物評價；分析了千島湖水體富營養化的限制性因子；同時根據千島湖各個取樣點的污染狀況，對千島湖進行水環境質量區劃；利用前人的經驗統計模型預測了千島湖現有的磷濃度水平及治理所需要削減的污染物負荷量；並且組建了多個回歸統計模型，運用這些模型預測千島湖水體中的總磷濃度；最後根據多年水質、底質、生物等方面的監測數據以及千島湖流域的氣象和社會經濟狀況的資料組建機理性的千島湖富營養化模擬模型。
  14. Second, on the basis of studying and analyzing some common water quality models, a new method which use bp - nn is proposed, and related algorithms and simulation results, which use the actual data from the automation monitor station of dong jiang, are given

    對水質預測模型進行了重點研究。在了解、分析一些常規水質模型的基礎上，提出了用bp神經網路進行智能建模的新方法，並結合東江自動監測站的實測水質數據進行了初步的探索，給出了模擬結果。
  15. Models using nonlinear optimization methods for the recognition of water quality classes by zoobenthos are proposed

    把非線性最優化模式的模型用於過底棲生物來確定水質級別的方法被提出來了。
  16. Models of water quality

    水環境生態學模型
  17. The targets of reasonable allocation of water resources are analyzed, the models are established that are water quantity analysis model, water quality analysis model, economy analysis model, water demand of eco - environment model. then based on the models, by the use of the theory of system analysis, large - scale systems and multiobjective decision - making, based on water quantity and quality, the multiobjective reasonable allocation model is established

    剖析了水資源合理配置的目標，建立了水量分析模型、水質分析模型、經濟分析模型、生態環境用水模型，並在此基礎上，利用大系統和多目標決策理論，建立了基於量與質的考慮經濟發展和生態環境保護的多目標水資源合理配置模型。
  18. The mathematic models of them are founded and computed with the new working pairs tfe / tegdme. the effects of heat source temperature, temperature drop of heat source in systems, output temperature, temperature of cooling water, concentration range of cycle on the quantity and quality of recovered heat are analyzed in the paper. the results show that in the three cycles, in the concerned range of parameters, cop of the high - low cycle ranges between 0. 32 and 0. 34, coe ranges between 0

    計算結果顯示，在所計算的三種方式的循環中、在所研究的參數變化范圍內，高低型循環的cop大體維持在0 . 32 0 . 34的范圍內、 coe大體維持在0 . 53 0 . 6的范圍內，並聯型循環的cop大體維持在0 . 29 0 . 32的范圍內、 coe大體維持在0 . 48 0 . 53的范圍內，而低高型循環的cop與溫升是一對很尖銳的矛盾：溫升在60左右時， cop只有0 . 1左右，而要達到較高的cop時，溫升只能達到很低的30 40 。
  19. Based on the water quality models available and the practical data of some water quality monitoring spot, and the principle of least square, this paper establishesd a water quality ( targeting an surplus chlorine ) project condition rechecking model and extracts it with the modified ga

    摘要在已有水質模型和部分水質監測點實測數據的基礎上，根據最小二乘原理，建立了給水管網水質（以余氯為對象）工況復核模型，並用改進遺傳演算法對其求解。
  20. A lot of achievements in the field of the research on the water quality model have been made in america, among which many models have their own unique purposes and features

    摘要美國在水質模型領域取得了大量的研究成果，很多模型都有其特有的使用條件和特徵。
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