時變水文模型 的英文怎麼說

中文拼音 [shíbiànshuǐwénxíng]
時變水文模型 英文
time-variant hydrologic model
  • : shí]Ⅰ名1 (比較長的一段時間)time; times; days:當時at that time; in those days; 古時 ancient tim...
  • : 名詞1 (由兩個氫原子和一個氧原子結合而成的液體) water 2 (河流) river 3 (指江、河、湖、海、洋...
  • : Ⅰ名詞1 (字) character; script; writing 2 (文字) language 3 (文章) literary composition; wri...
  • : 模名詞1. (模子) mould; pattern; matrix 2. (姓氏) a surname
  • 水文 : hydrology水文測驗 hydrologic survey; 水文成因分析 hydrologicall genetic analysis; 水文地理學 hydr...
  • 模型 : 1 (仿製實物) model; pattern 2 (制砂型的工具) mould; pattern3 (模子) model set; mould patter...
  1. By hydraulic modeling, this paper describes studies on the stability of a floating bulkhead operating in standing water and flowing water, and it ' s hydrodynamic stability characteristics that distinguish in standing water from in flowing water ; and direct measurements of the forces acting on the model floating body during floating and sinking is taken. as a result, the rotation stress curves are produced and analyzed ; to provide data for optimum operation schedule analyses of the sluice, the relationship of the impact forces acting on the side wall of the gate and the running speed is studied ; the reasons of unstably uplifting of the bulkhead are discussed and the method to solve the problem is also given in this paper

    結合常州新閘防洪控制工程試驗,系統分析了浮箱門在靜和動中的穩定性及其影響因素,指出靜穩性和動穩性的不同特點;試驗測定了浮箱門動運行的受力情況,給出並分析了定位過程轉動力的化過程曲線;根據浮箱門啟閉速度與門體和岸墻之間撞擊力大小的關系,選擇合理的動力設備,為設計和工程實踐提供可靠依據;分析浮箱門難以穩定上浮的原因,並給出解決方案。
  2. Based on consider hereinbefore, this dissertation discusses several aspects on the problem of the sustainable and optimum exploitation of groundwater resources as follows : ( 1 ) reviewed entirely the origin and evolvement of the concept " sustainable development ", stated and commented the study status in queue on " sustainable development " around national and international range, thorough discussed the science connotation about the concept " sustainable development " ; ( 2 ) looked back and commented across - the aboard some furthest basic concept and proposition related to groundwater resources, put forward self opinions on a few existent mistake points of view and chaos understandings ; ( 3 ) expatiated entirely on the content and meaning of the theory of changeable groundwater resources system, contrast with the traditional methods of groundwater resources calculation and evaluation, combined example to show the application of this theory ; ( 4 ) thorough analyzed the difficult and complexity to forecast the groundwater resources, fully stated the traditional methods of groundwater resources forecasting, pointed out the characteristic and applying condition of these forecasting method, introduced the main ideas and methods of wavelet analysis developed recently, and the matlab software be known as the fifths era computer language, and its accessory wavelet analysis toolbox, applied these methods and tools to analyze the groundwater dynamic curve, adopted the b - j method and morte - carlo method, combined with the theory of changeable groundwater resources system, discussed the new view on the forecast of groundwater resources ; ( 5 ) synthetically analyzed the characteristics and limitations of the present all kind of groundwater manage model, combined mathematical programming mathematical statistics random process and the theory of variation system of groundwater resources on the unite optimum attempter of surface water and groundwater, emphasized how to make the model more nicety, more simple, more practicality ; ( 6 ) analyzed the inside condition and outside condition to assure the sustainable and optimum exploi tation of groundwater resources, the inside conditions are the follows : correct resources idea, scientific methods of resources calculation and evaluation, credible forecast methods of resources, exercisable measures of resources management, the outside conditions are the follows : the development idea of high layer, the transform of manage system, the matched policy and rule of law, the adjusted of economy lever, the improve of cultural diathesis, the boosting up of water - saving consciousness and detail measures, the control of population rising, the prevention and cure of water pollute, the renew and rebuild of ecology ; ( 7 ) scan the sustainable and optimum exploitation of groundwater resources from the high level of metagalaxy, earth system science, and philosophy ; lint out the more directions on groundwater resources

    基於以上考慮,論主要從以下幾方面對地下資源可持續開發問題進行了比較深入的探討:全面回顧了「可持續發展」概念的由來與演,對國內外「可持續發展」的研究現狀進行了述評,並對「可持續發展」概念的科學內涵進行了深入探討;對涉及地下資源的一些最基本的概念和命題進行了全面的回顧和評述,對目前仍然存在的一些錯誤觀點和混亂認識提出了自己的見解;全面闡述了地下資源值系統理論的內容和意義,並與傳統的地下資源計算評價方法進行了對比分析,結合實例具體說明了方法的應用;深入分析了地下資源預測預報工作的極端重要性和復雜性,對傳統的地下資源動態預測方法進行了全面的評述,指出了各類預測預報方法的特點及適用條件,對最近二十多年剛發展起來的小波分析技術的主要思想和方法及其應用范圍,以及號稱第五代計算機語言的matlab軟體和附帶的小波分析工具箱進行了介紹,並應用於地下動態過程線的分析,採用間序列中的b ? j法,蒙特卡羅方法,與地下資源值系統理論相結合,探討了地下動態資料分析和地下資源預測預報的新思路;綜合分析了現今各類地下管理的特點及缺陷,將數學規劃、數理統計、隨機過程等與地下值系統理論相結合進行地表地下或多源的聯合優化調度,使更準確、更實用;對保證地下資源可持續開發的內部條件和外部條件進行了分析,內部河海人學博卜學位論前言、摘要、目錄條件主要是正確的資源觀,科學的資源計算與評價方法,可靠的資源預測預報技術,可操作的資源管理措施,外部條件主要是高層發展思路、管理體制的革、配套的政策法規、經濟杠桿的調節、人素質的提高、節意識的增強及具體節措施、人口增長的控制、體污染的防治、生態的恢復和重建等;從宇宙科學、地球系統科學及哲學的高度審視地下資源的可持續開發;指出了地下資源可持續開發的進一步研究方向。
  3. According to the least twin multiplication to calculating the sensitivity index in several water production functions. thus, the writer obtains the fitted the value of the sensitivity index and the varied rule. at the same time, the writer puts forward a new method named rag a ( real coding based accelerating genetic algorithm ) and combines raga with dpsa to calculating the best irrigation system under the non - sufficient irrigation of well irrigation rice in sanjiang plain

    根據《隨機學》理論中的間序列分析法,建立了適合三江平原井灌稻需量預報的非平穩序隨機;通過分析降雨隨機特性,選定季節性序隨機,建立了適合三江平原井灌稻降雨預報的月平均降雨;根據最小二乘法,計算出幾種常用分生產函數中的敏感指數及敏感系數,進而得到三江平原適宜採用的分生產函數漠中敏感指數的化規律;本提出遺傳動態規劃法( raga ? dp ) ,即採用改進的基於實數編碼的加速遺傳演算法( realcodingbasedacceleratinggeneticalgorithm ,簡稱raga )與動態規劃法( dpsa )相結合,推求非充分灌溉條件下三江平原井灌稻的最優灌溉制度。
  4. This paper develops a deterministic inventory model for perishable items with a mixture of back orders and lost sales under inflation and time discounting, where the backlogged demand rate is dependent on the negative inventory level during the stock out period. the main differences from the existing related models are that the present model takes the maximum present value of profit in a repeatable order cycle as the objective function and proposes a more practical constraint of maximum customer - waiting time to ensure a proper customer service level. then the existence and the uniqueness of the solution to relevant systems are examined and a solution algorithm is shown to find the optimal replenishment policy. at last, some numerical examples are presented to illustrate the applicatioh of the model

    建立了一種考慮通貨膨脹與間價值的質性物品的庫存,在中允許短缺發生且拖后的需求速率與在缺貨期間已經發生的缺貨量有關.和已有相關的主要區別在於本把一個可重復的訂貨周期內的最大平均利潤的凈現值作為目標函數,且增加了在缺貨期間最長顧客等待間的限制,以確保庫存系統擁有較高的服務平.然後討論了最優解的存在性與唯一性,並提供了尋求整體最優解的演算法.最後用實例說明了此在實際中的應用
  5. In the positive analysis, the paper, firstly using the 1978 and 2001 data in ( time order ) and analyzing the total consumption and its structural characters of rural residents in liaoning province, including the basic tendency and structural change of rural their consumption, came to the conclusion that since the reform and opening up, the total consumption level of rural residents has been promoted and their consumption structure has been improved in liaoning ; secondly, using 2001 sectional data, econometrically analyzed the peasants " consumption structure by employing the by which in the analysis the author makes the assumptions as follows : all the consumers have the identical marginal budget share or the identical marginal propensity to consume when consuming certain goods

    本論首先利用1978 ? ? 2001年的序資料分析了遼寧省農民消費的總量狀況和結構特徵,包括農民消費的基本走勢及農民消費結構的遷。得出:改革開放以來,遼寧省農民總體消費平有了一定程度的提高,農民消費結構不斷改善;其次選擇2001年截面資料對遼寧省農民消費結構進行了計量分析,在這部分分析中,選用的是擴展的線性支出系統(簡稱eles) ,但採用擴展的線性支出系統進行分析和預測消費傾向中,暗含著如下假定: 「對某類消費品的邊際預算份額或邊際消費傾向,所有消費者都是相同的。 」
  6. In this article, firstly the background of the textile trade conflicts within sino - us or sino - euro are introduced, thus learn that how to discern and dodge the foreign trade risks, how to choose the appropriate investment projects have already become one of the most important questions for exporting companies on foreign trade affairs well - known as high investment and high risk. so the main text makes a risk analysis qualitatively and quantitatively on a textile - exporting trading company from three angles of statistic 、 game theory and portfolio theory, which is the main content that we studied. firstly, the statistic article adopts data of the transaction closing price of the textile clothing index in shenzhen stock exchange at the end of each quarter as well as several other kinds of data reflecting the macro - economic changes, performs an empirical analysis of these data according to the theory of co - integration test 、 granger cause test and impulse response function of time series in economitric, and learn that the impact to ti is more obvious by the economic index reflecting local commodity price level and economic prosperity degree home and abroad, as well as the impact degree and the time lag degree, and knows the macro - economic risks faced by textile business enterprises ; after that by the game theory angle we analyze exactly the managing risks faced by one textile export corporation named beauty. from the game expansion chart the system arrangement between censor ways by exportation goal countries and exporting strategies by the exporting enterprises has been analyzed. involving the benefit assignment between them both the limited rounds and infinite rounds negotiations of cooperation games have been studied, and then country responsibility and the enterprise managing risks on foreign trade affairs and so on have been analyzed exactly ; in order to realize the investment multiplication in the certain degree to disperse the risk, the

    首先介紹了中美、中歐紡織品貿易爭端的來龍去脈,由此可知在涉外貿易這種以高投入、高風險著稱的行業里,如何甄別和規避外貿風險、如何選擇合適的投資項目已經成為外貿企業的首要問題。因此,正分別從統計學、博弈論和投資組合三種角度對涉外紡織品貿易公司風險進行了定性和定量的分析,這也是本的主要研究內容。首先,統計學篇選取了深圳證券交易所行業分類指數?紡織服裝指數( ti )每一季度末的交易收盤價和若干種反映宏觀經濟化的指標,利用計量經濟學中間序列的協整檢驗、 granger因果檢驗和脈沖反應函數等理論做實證分析,從而得知反映國內物價平和國內外經濟景氣程度的經濟指標對紡織板塊上市值的沖擊比較明顯,且可知沖擊程度和滯度,進而分析出涉外紡織企業所面臨的宏觀經濟風險;接著,從博弈論的角度具體分析一家紡織品出口公司( beauty )的外貿活動所面臨的各種經營風險,該篇從博弈擴展圖入手,分析了出口目的國審查方式與本企業出口策略之間的制度安排;並圍繞雙方的利益分配,研究了有限回合和無限回合合作談判博弈,然後具體論述了國家責任和企業涉外經營風險等問題;在一定程度上為了實現投資多元化來分散風險的目的,投資組合篇從經典的markowitz著手,在一些特定條件的限制下,給出了一個相應的投資組合
  7. Second, based on the characteristic of the receiving water studied in this paper, develope a dynamic one - dimension water quality model for nanbei river in zhangcha town of foshan city, and develope a program of water quality model based fortran powerstation. and then, calculate the concentration of codcr in receiving water using the simulation results of swmm and analyze the effect on the environment of receiving water by intercepting ratio. at last, the construction investment and operational and administrative expenses of intercepting trunk sewer 、 pumping station and sewage farm is calculated and the relation between them is discussed

    其次,本根據研究區受納體的特點,建立了佛山市張槎鎮南北大涌的一維非穩態,相應地開發了基於fortranpowerstation平臺的計算程序,並在swmm擬結果的基礎上,利用本編制的程序計算了不同截流倍數南北大涌codcr濃度的化過程,分析了截流倍數對河涌環境質量的影響。
  8. 4 in order to make. the decision adjust to the practice, and use the limited water resources more rationally. a multi - objective fuzzy decision method for irrigation district is presented considering fuzzy connection, then a method is given to get the changeable objective weight of each stage. this model can solve the decision in conjunctive use of ground and surface water

    4 、為合理利用資源,使渠井結合灌區的地表、地下聯合調度決策與實際結合更緊密,本在陳守煜建立的多指標糊關系優選決策理論基礎上,提出了考慮段指標權重的多指標糊關系優選決策方法,中各指標的權重隨作物所處生長階段的不同發生化,並將與演算法應用於實際例子中,取得了較為滿意的結果。
  9. To this area precipitation materials for many years, evaporate materials, surface flow materials, hydrometeorological materials, hydrogeological materials carry on exhaustive analysis, have analysed the state of water resource of the sand district, proceed from the heat of the earth ' s surface is balanced, water yield balanced basic theories, combine the amount of regional water resource set up of the materials, such as scene, hydrology, soil of the sand district, etc. and estimate models, have calculated the surface water, groundwater of this area, has carried on models to examine according to the real data, and has predicted to the state of water resource under different climate change scenes of future that analyse. have put forward the scheme that the water resource in this area utilized rationally, use the non - linear motive force model to predict the precipitation, utilize the materials of actual observation, the natural supply amount of calculating out groundwater of sand ground of balanced principle of the amount of water used at the same time, and can exploiting amount predict to groundwater, district of sand,

    以寧夏半乾旱地區鹽池縣沙地資源為研究對象,對該地區多年降資料、蒸發資料、徑流資料、氣象資料、地質資料進行了詳盡的分析,分析了沙區的資源狀況,從地表熱量平衡、量平衡的基本理論出發,結合沙區的氣象、、土壤等資料建立了區域資源量估算,計算了該地區的地表、地下,根據實際資料進行了檢驗,並對未來不同氣候化情景下的資源狀況進行了預測分析,提出了該地區資源合理利用的方案,運用非線性動力對降量進行預測,同利用實際觀測資料,運用量平衡原理計算出沙地地下的天然補給量,並對沙區地下可開采量進行預測。
  10. This paper, on the basis of yuelu - mountain high - tech park in changsha city, beginning with the investigation of diversiform transit - trip in the park, firstly analyzes and evaluates space - time change law of traffic flow and situation of traffic service level on actual road net - work in the park ; secondly, applying multi - statistical analysis method, taking investigated corporation as sample, using annual freight traffic volume produced by unit plant area of the corporation, with clustering analysis, obtains four sorts of the sample corporation, and establishes the predict models of freight traffic volume for every kind of corporation. with these models, actual or planning year ’ s day maximum freight traffic volume can be predicted. the third, this paper makes analysis research of trip law of employees in the park, and obtains the index of trip times, trip modes and trip development trend of the employees

    以長沙市嶽麓山高科技園區為依託,從調查園區內的各類交通出行開始,首先分析評價了園區內現狀道路網上的交通流化規律及道路網上的交通服務平狀況;其次是應用多元統計分析方法,以調查企業為樣品,以企業單位車間面積所產生的年貨運交通量為量,通過聚類分析,獲得了樣本企業的四個類別,並建立了各類企業貨運交通量的預測,應用這些,可預測園區內現狀或規劃年的日最大貨運交通量;第三是對園區內企業員工的出行規律做了分析研究,獲得了企業員工的出行次數、出行方式及出行發展趨勢等等特性指標;最後是對園區內小區居民的出行狀況進行了分析,獲得了居民出行的諸如高峰段、高峰出行量等等的特徵數據。
  11. Abstract : digital basinis made from digital elevation model considering spatial variability within a catchment. on the basis of digital basin, the digital approach to describing hydrological processes within a catchment is investigated. digital hydrological model is regarded as a modern physically - based modeling technique that includes a large amount of information. the case study on the shiguanhe catchment in the huaihe river basin, intensified observation field of gewex asian monsoon experiment project, has shown that the digital mode lperforms very well not only in simulating runoff processes at any specific site, but also in simulating spatial distribution and temporal variation of hydrological elements and state variable ( especially soil moisture ), if compared with traditional hydrological models. that provides solid foundation for full use of now available observation in formation and in - depth mining of hydrological data

    摘:考慮流域下墊面空間異性,基於數字高程構建了數字流域,並在此基礎上對描述流域物理過程的數字方法進行了探討.章認為,數字是一種有物理基礎的包含大容量信息的現代擬技術.史灌河流域實例研究表明,數字可以十分方便地輸出要素和狀態量的空間分佈與間序列,這對充分利用現有觀測信息進行信息的深層挖掘創造了條件
  12. In order to grasp the urban system processes and evolution pattern of hunan province comprehensively, this article has made further discussion on its structure characteristic : through regression analysis, graph analysis and statistics analysis of the time series data and cross sections data, by combining with the fractal theory, we induce the following conclusion : the hierarchical size structure presents the law of the primate city, the rank - size rule and pyramid structure characteristic, but it also has the insufficient development problem of the high hierarchical size city. by using the gravitation model, we found out that the economy relation intensity among those main cities is weak while the structure is loose. based on the urban layer system of economic development level and industrial structure evolution of the cities in hunan province, this article then induces the function combination among the five urban agglomerations in hunan province

    為全面把握湖南城市體系的運演規律,本對其結構特徵作了進一步的探討:通過序數據和截面數據的回歸分析、圖表分析和統計分析,結合分形理論,得出了其等級規結構分佈呈現出首位分佈、位序?規分佈和金字塔結構特徵,以及存在著高層次城市發展不足的問題;運用場引力發現該省主要城市間的經濟聯系強度較弱、結構鬆散,在歸納出該省城市經濟發展平的層次體系、產業結構演的基礎上,導出了該省城市體系的五大城市群職能組合;結合空間結構體系、路網交通條件和經濟發展狀況,對該省城市空間分佈狀態進行了定性分析,研究表明該省總體上處于極化階段,各個具體區域,分佈階段不一,差異較大。
  13. The model is mainly for assessing the effects of climate change on hydrology and water resources. the huaihe river basin with the area of 270, 000 km2 is selected as the research area

    所建主要供評價氣候化對資源影響之用,同也為陸氣耦合所要求的式作初步探討。
  14. The super entropy produce criterion is a good tool to judge the system ' s abrupt change from a lower grade to a higher one. in this paper the entropy of the urban resource - environment system was defined, and in an example of its application the super entropy produce criterion of the urban resource - environment system reflected the real developmental process of the whole system. furthermore, in this paper, a new model for the grid size optimization of the finite element method ( applied to the water quality modeling of the topographically complicated river ) was brought forward based on the maximum information entropy theory in condition that the length of gird was given

    超熵產生判據為我們提供了判斷系統從低級有序向高級有序突過程的工具,本提出了城市資源與環境系統熵的定義,在實例中的應用證明城市資源與環境系統的超熵產生判據較好地反映了整個系統的演化情況;另外,本針對在城市復雜河道情況下,利用有限單元法求解河流網格單元大小難確定的問題,引入網格信息熵的概念,提出了有限單元法求解河流的網格優化方法。
  15. Although economic and population specialists and scholars both in abroad and at home have made extreme progress on research the question of rural labor since they studied it very long ago, as far as china is concerned, based on the following three aspects, firstly, the national condition of our country determined that the foreign theory such as lewis theory might instruct us but we ca n ' t use these theories without rectification ; secondly, in china, our research about this question prefer the qualitative analysis to the quantitative analysis ; thirdly, the research on the labor utilization and shift in this specific area, that is, in the mountainous rural area which covers 69 % of our mainland and occupies 56 % of population is absolutely scarce in present ? to make up for the three deficiencies, this paper selects the econometrics analysis, uses investigation data and by virtue of tsp software, establishes a model where shift labor is the dependent variable and the citilization ratio, industrial structure, the income gap between city and country, the rural infrastructure construction, the labor ' s aptitude and the population ' s natural growth ratio are the variableso through economic, statistical and econometrical test, the conclusion is attained : the income gap between city and country and the citilization ratio are the two most important fectors which affect the labor ' s utilization and shift in mountainous rural area -, the rural infrastructure construction and the labor ' s aptitude are the two relative important factors which affect the labor ' s utilization and shift in mountainous rural area while the rural industrial structure and the population ' s natural growth ratio are the two least important factors according to this, this paper puts forward several suggestions that the income gap between city and country, citilization ratio, rural education, rural industrial structure and agricultural mechanization should be carefully treated with on studying the question of labor utilization and shift in mountainous rural area. finally, this paper points to several suspending problems about this research in order to get the concern of specialist and scholars

    盡管國內外經濟和人口學方面的專家與學者很早就開始了對農村勞動力問題的研究並取得了極大的進展,但是,我國在研究農村勞動力問題,基於三點:其一,我國國情決定了國外的理論例如劉易斯理論,雖然對研究我國的農村勞動力問題具有指導意義,但卻不能照搬這些理論;其二,從國內看,我國對該問題的研究重視定性分析而定量分析明顯不足;其三,缺乏對我國占國土面積69 、人口56的山區農村這一特殊區域內的勞動力開發利用及轉移的專門性研究。為了彌補這三個缺憾,論採用經濟計量學的數量分析方法,利用實際調查資料,藉助tsp軟體,建立了以外出勞動力數量為被解釋量,城市化率、農村產業結構、城鄉收入差距、農村社會基礎設施建設、農村勞動力素質以及人口自然增長率六個量為解釋量的,通過對該進行經濟學、統計學、經濟計量學三個方面的檢驗,得出如下結果:城鄉收入差距和城市化率是影響山區農村勞動力開發利用及轉移的最重要的兩個因素;農村社會基礎設施建設和農村勞動力素質是較為重要的兩個影響因素;而農村產業結構和人口自然增長率相對來說是較不顯著的影響因素。據此,本提出了在研究山區農村勞動力開發利用及轉移問題,應慎重對待城鄉收入差距、城市化平、農村勞動力素質、農村產業結構、農業機械化五個問題。
  16. The objectives of this study are : ( 1 ) collect the basis data about soil physical properties, soil moisture, infiltration and evapotranspiration in the catchment scale for developing a catchment hydrological model, based on the dtm, ( 2 ) provide the hydrological information in the catchment scale for developing agricultural production, vegetation rehabilitation, and reasonable land using in this region. the main conclusions drawn from this study are : ( 1 ) the soil physical properties, including bulk density, saturated soil moisture, field capacity, and wilting moisture, were measured at 56 plots across the catchment

    為此,本以黃土高原溝壑區典小流域?王東溝為研究對象,通過大量的野外測定和室內分析,系統研究了流域土壤容重、土壤飽和含量、田間持量、萎蔫濕度、土壤入滲性能、土壤含量和蒸散量的空間異性,以期為該區農業生產、植被恢復和土地合理利用等提供科學的依據,同為建立基於數字高程( dtm )為基礎的流域積累基礎資料。
  17. It also puts forward logical explanations to a few facts that are still unable to be explained, up to now, by the classical consumption models. however, for the scholars in china, the cognition of the buffer - stock theory still remains at a superficial level of only providing simple theoretical introduction to it. a finer depiction and empirical application of it will not only facilitate studies on the related theories in china but also do great benefit to the development of the buffer - stock theory itself because china is admittedly one of the

    本論的主要發現及創新包括:在理解和刻畫我國居民的預防性儲蓄行為,緩沖儲備要優于以儲蓄平量作為被解釋量的;核密度估計方法對不確定性的描述更準確;從儲蓄率化率的角度進行的格蘭傑因果關系檢驗證實了我國的居民存款儲蓄對經濟增長有推動作用;養老金的化對我國居民儲蓄行為具有顯著影響,而我國現有的醫療保障體系沒有發揮其應該能夠發揮出的作用。
  18. On the basis of analyzing historical water consumption in shenzhen, hourly water demand, daily water demand and annual water demand are studied using non - linear regression model, time series model, artificial neural network, gray model and compounding model, etc. by anglicizing merits and demerits of every model in different forecasts, time series model is appropriate to hourly water demand forecast ; compound forecasting model of time series and regress analysis is appropriate to daily water demand forecast ; gray model and regress analysis model is appropriate to annual water demand forecast

    通過分析深圳特區用量的化規律,採用非線性回歸分析、間序列、人工神經網路、灰色和組合預測分別對量、日需量、年需量進行了研究。通過比較分析各種在不同預測類中的優缺點,量預測較適合採用間序列;日需量預測較適合採用序?回歸分析組合預測;年需量預測較適合灰色、回歸分析;提出了指導選擇城市需量預測的方法。
  19. Understanding the feedbacks and dominant controlling mechanisms among vegetation, hydrology, erosion, and nutrient dynamics is the key to scaling research results at multiple scales integration of landscape ecophysiological processes and hydrological processes in spatially distributed, physically - based hydrological modeling is the key to understanding the vegetation - hydrology - soil erosion and sediment yield processes

    ,作為有效的研究工具,今後的發展應更加註重耦合植被生理生態過程以及景觀生態過程,從流域徑流泥沙對多尺度植被響應的過程與機制入手,為植被恢復與重建、改善流域資源狀況和流域生態環境奠定基礎。
  20. Using stable heat transferring theory, a thermo hydraulic model has been built, which has considered the influence of the core temperature and cooling hydrogen temperature. and bring forward a modifying method, which let the model can be used in the varying winding current condition

    在此基礎上本提出了溫度傳遞延的修正方法,使基於穩態傳熱的溫度可以應用到定子電流發生化的情況,解決了定子電流精度差的問題。
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