步子極大地 的英文怎麼說
中文拼音 [bùzijídàde]
步子極大地
英文
in seven-league boots-
This article puts forward a solution named divide - assemble by deducing the size of bp neural network to overcome entering the local best point, the dividing process is that a big bp neural network is divided into several small bp neural networks, every small bp neural network can study alone, after all small bp neural networks finish their study, we can assemble all these small bp neural networks into the quondam big bp neural networks ; on the basis of divide - assemble solution, this article discusses the preprocessing of input species and how to deduce the size of bp neural network further to make it easy to overcome entering the local best point ; for the study of every small bp neural network, this article adopts a solution named gdr - ga algorithm, which includes two algorithms. gdr ? a algorithm makes the merits of the two algorithms makeup each other to increase searching speed. finally, this article discusses the processing of atm band - width distribution dynamically
本文從bp網的結構出發，以減小bp神經網路的規模為手段來克服陷入局部極小點，提出了bp神經網路的拆分組裝方法，即將一個大的bp網有機地拆分為幾個小的子bp網，每個子網的權值單獨訓練，訓練好以後，再將每個子網的單元和權值有機地組裝成原先的bp網，從理論和實驗上證明了該方法在解決局部極小值這一問題時是有效的；在拆分組裝方法基礎上，本文詳細闡述了輸入樣本的預處理過程，更進一步地減小了bp網路的規模，使子網的學習更加容易了；對于子網的學習，本文採用了最速梯度? ?遺傳混合演算法（即gdr ? ? ga演算法） ，使gdr演算法和ga演算法的優點互為補充，提高了收斂速度；最後本文闡述了用以上方法進行atm帶寬動態分配的過程。Abstract : based on the iterative bit - filling procedure, a computationally efficient bit and power allocation algorithm is presented. the algorithm improves the conventional bit - filling algorithms by maintaining only a subset of subcarriers for computation in each iteration, which reduces the complexity without any performance degradation. moreover, a modified algorithm with even lower complexity is developed, and equal power allocation is introduced as an initial allocation to accelerate its convergence. simulation results show that the modified algorithm achieves a considerable complexity reduction while causing only a minor drop in performance
文摘:基於迭代的比特和功率分配機制，提出了一種低復雜度的比特和功率分配演算法.與傳統的迭代分配演算法不同，該演算法在每次迭代中只需要比較幾個特定的子載波.該方法在保持傳統迭代演算法性能的前提下極大地減小了迭代分配演算法的復雜度.此外，通過選擇等功率分配方案作為初始方案加快了演算法的收斂速度，進一步降低了演算法復雜度.模擬結果表明，提出的改進演算法在基本不犧牲系統性能的前提下有效地降低了演算法復雜度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。With the development of electronic technology in the field of high - frequency and high - power, power mosfet is gradually enhancing its important status in semiconductor apparatus and is being widely applied in power converters as switch. with the increasing of the operating frequency ( > 200khz ), the energy loss caused by parasitic capacitance will affect the efficiency of power transforming in converters. especially in the applications of high frequency power supply using mosfet as main devices ( the unit of frequency is mhz ), the energy loss caused by the switch process will badly affect its efficiency
隨著電力電子技術進一步向高頻的大功率用電領域發展，功率mosfet在各種電力半導體器件中的重要地位日益顯著，使用功率mosfet作為開關器件的功率轉換電路也日益增多，但隨著器件開關頻率的提高（大於200khz ） ，由器件極間電容引起的能量損耗將會影響到功率轉換電路的能量傳輸效率，特別是在以mosfet作為開關器件的高頻感應加熱電源中（工作頻率可達兆赫） ， mosfet在開關過程中的能量損耗嚴重影響到電源的效率，因此如何減小開關器件的損耗提高高頻功率轉換線路的效率成為電力電子技術領域的重要研究課題之一。At one corner, where the foliage became so thick as almost to shut out day, a large stone bench and sundry rustic seats indicated that this sheltered spot was either in general favor or particular use by some inhabitant of the house, which was faintly discernible through the dense mass of verdure that partially concealed it, though situated but a hundred paces off
花園里有一角枝葉極其茂密，幾乎把陽光都關在了外面，這兒有一條大石凳和各種各樣農家風味的坐椅，表明這個隱秘的去處是一個聚會的地點，或是這大廈里某位主人翁所心愛的靜居處，大廈離這兒雖只有一百步左右，但從茂密的綠葉叢中望出去，卻只能看到一個極模糊的影子。Secondly, in the first phase, this paper solves the inventory supplement sub - problem through integer programming model, using the reduction of vehicle routes as the breakthrough to this problem, divides a whole distribution region into many customer subsets by radius - circle partitioning method, determines the optimal number of vehicle of service distribution region, applies two practice - oriented conclusions to reduce the number of routes on the basis of customer grouping, thus decreases considerably the variable scale of integer programming, and solves the problem through professional software to fix inventory supplement plan in plan period
其次，在第一階段使用整數規劃數學模型來規劃庫存補充計劃子問題，以減少車輛巡迴路線數目為求解該整數規劃的突破口，提出與固定劃分策略（ fpp ）相似的客戶分組思想，通過徑?環切割法把整個配送區域劃分成多個客戶子集，實現客戶分組並確定服務整個配送區域的最佳車輛數目。在客戶分組的基礎上建立了精簡路線的整數模型，然後通過運用兩條基於實際經驗的判斷來進一步減少巡迴路線數目，進而極大地減少了整數規劃的變量規模，並利用專業的求解軟體來求解該整數規劃問題，從而確定計劃期的庫存補充計劃。The authour investigate the dosing conditions and effect of the pac to the huanghe water - source, which includes the following four parts : the selection of the pac ; the confirmation of dosing scheme and effect of the pac ; the research of application of potassium permanganate in combination with pac ; the research of the pac ' s modification and the modified effectiveness. the experiment is mainly carried out on the pilot system in the jieyuan water plan of tianjin. the results of the reseach include the following : l ) the pac from zunhua plant is selected as the better carbon for the source water of tianjin through the experiment ; 2 ) through the pilot experiment we conclude that the pac ' s best adding point is the mixing tank and the better dose is 10mg / l, on which the codmn of filtered water can be decreased to 40 % and the effluent have no problem of odour and color ; 3the adsorbing experiment show that pac mainly adsorb the organic matters which molecular wt., distribution between 500 and 3000, and can adsorb organic matters whose molecular wt., distribution are bigger than 6000 if the dose of it is adequent ; 4 ) pac together with potassium permanganate can remove the organic matter more effectively than each of them alone, and reduce the rising trend of turbidity of the flotation ' s effluent due to adding pac ; 5 ) the thesis made a research on the surface properties and the adsorbing capability of the modified carbon by oxidizer : the modified carbon with 20 % h2o2 can remove more organic pollutants than the untreated one by 12 % when we add a higher dose of coagulant ; 6 ) the modification of reduction and loading metal ions are also sttldied, and drow the following conclusions : the modified carbon with 5 % ammonia can enhance the organic matter ' s removal effectiveness by 10 % to the tianjin source water than the untreated one, and the modified one with loading metal ion remove the organic matters from the tianjin source water better ( 8 % ) than the untreated one due to the strong affinity betwween the humic acid and copper ion
本文的實驗主要是在天津芥園水廠的中試系統上完成的，論文的成果和結論主要包括： 1 ）通過靜態實驗選定河北遵化活性炭廠生產的煤質炭為適合天津原水的炭種； 2 ）中試實驗確定粉末活性炭的較佳投加點為混合池投加，較佳投加量為10mg l ，此時可使濾后水的cod _ （ mn ）降低40 ，且可較好地控制濾后水的嗅味和色度； 3 ）初步確定粉末活性炭對原水中有機物的吸附主要集中在分子量在500 - 3000范圍內，投量增大時可吸附部分分子量大於6000的有機物4 ）中試實驗表明：粉末活性炭與高錳酸鉀聯用可取得較兩者單獨應用時對有機物更好的去除效果，且對因投加粉末活性炭而造成的氣浮出水濁度升高有一定的改善作用； 5 ）研究並初步確定氧化改性對粉末活性炭表面性質和有機物的去除效果的影響：粉末活性炭的氧化改性會使其表面的酸性官能團大量增強，表面極性增加；經20的過氧化氫改性的活性炭在增大混凝劑投加量（ fecl _ 3投量為15mg l ）時對有機物的總體去除效果較原活性炭提高12 ， 1次氯酸鈉改性活性炭對有機物的去除效果較原活性炭提高6 ； 6 ）研究並初步確定還原改性、負載金屬離子對原水中有機物的去除效果的影響：經5氨水改性的活性炭可提高天津源水中有機物的去除率達到10 ；負載銅離子后的活性炭可提高對腐殖酸類物質的去除能力，一般可提高8左右。During its operation, the rotor of the machine is always under the great suppression of centrifugal force. the surface of rotor is the most important part to enduring the forces and thermal energy. so the windings of rotor are in a common problem of happening one - point to earth short fault, two - point to earth short fault, or turn - to - turn short fault
汽輪發電機是一種高速隱極式同步電機，在其運行時，轉子受到強大的離心力的作用，而轉子表面是承受機械應力和發熱的最關鍵的部件，因此汽輪發電機轉子繞組容易發生一點接地、匝間短路和兩點接地短路故障。Anybody may blame me who likes, when i add further, that, now and then, when i took a walk by myself in the grounds ; when i went down to the gates and looked through them along the road ; or when, while adele played with her nurse, and mrs. fairfax made jellies in the storeroom, i climbed the three staircases, raised the trap - door of the attic, and having reached the leads, looked out afar over sequestered field and hill, and along dim sky - line - that then i longed for a power of vision which might overpass that limit ; which might reach the busy world, towns, regions full of life i had heard of but never seen - that then i desired more of practical experience than i possessed ; more of intercourse with my kind, of acquaintance with variety of character, than was here within my reach
我想再說幾句，誰要是高興都可以責備我，因為當我獨個兒在庭園里散步時，當我走到大門口並透過它往大路望去時，或者當阿黛勒同保姆做著游戲，費爾法克斯太太在儲藏室製作果子凍時，我爬上三道樓梯，推開頂樓的活動天窗，來到鉛皮屋頂，極目遠望與世隔絕的田野和小山，以及暗淡的地平線。隨后，我渴望自己具有超越那極限的視力，以便使我的目光抵達繁華的世界，抵達那些我曾有所聞，卻從未目睹過的生氣勃勃的城鎮和地區。隨后我渴望掌握比現在更多的實際經驗，接觸比現在范圍內更多與我意氣相投的人，熟悉更多類型的個性。The explicit method is widely used for its simpleness and little memory consumed with local time step and variable coefficients implicit residual smooth to accelerate the convergence procedure. according to yoon and jameson ' s ideas, an efficient implicit lu - sgs algorithm is carefully constructed by combing the advantages of lu factorization and symmetric - gauss - seidel technique in such a way to make use the l and u operators scalar diagonal matrices, thus the numeric algorithm requires only scalar inversion. the computational efficiency is greatly improved with this scheme
顯式方法具有簡單，消耗內存小等優點，並採用當地時間步長、變系數隱式殘值光順等加速收斂措施，在定常流動的模擬中得到了廣泛的應用;根據yoon和jameson提出的簡化正、負矩陣分裂，構造的l 、 u運算元只需進行標量對角陣求逆，極大提高了流場數值求解過程的計算效率;採用newton類型的偽時間子迭代技術使時間推進精度提高至二階。分享友人