impact factor 中文意思是什麼
impact factor
解釋
沖壞數-
And the deficiencies are pointed out in present researches, such as highway capacity, level - of - service, influence factor of road alignments, etc. from these, it has confirmed that the thesis should be studied from rational analysis, quantitative analysis of level - of - service, impact on capacity of road alignments, setting - up simulation model, etc. the high - accuracy gps dynamic data acquisition appearance is proposed to be used for the first time to carry on the experiment of overtaking on two - lane highways, and experiment scheme is designed according to the driver ' s perceive to judge each overtaking course. based on the experiment data, it can get two important parameters of acceptant gap ? the critical gap of overtakable time headway and returnable time headway through data processing, which can offer the strong support to the research of two - lane highway capacity with qualitative and quantitative analysis. besides, the experiment methods is provided to observe overtaking ratio and to measure the
研究中首次提出了運用高精度gps動態數據採集儀對雙車道公路上的超車行為進行觀測，設計了根據駕駛員感受度來衡量超車過程的實驗方案，並通過後期數據處理得到了超車過程中兩個重要的可接受間隙參數-可超車車頭時距和可回車車頭時距的臨界間隙值，為定性和定量分析雙車道公路通行能力提供有力的數據支持;同時，還提出了觀測超車率的實驗方法以及測量加速度干擾的實驗方案，統一了計算加速度干擾的時間統計間隔，為雙車道公路的服務水平量化研究奠定基礎;最後還簡單介紹了駕駛員問卷調查法和模擬程序中模型參數標定和驗證的數據採集方法。 -
In this paper, based on land use maps of 1976, 1988, 2003, which were interpreted from the landsat mss / tm / etm imageries, and the map of main road, with the buffer analysis tool in arcgis 8, we studied the land use and land cover change on the two sides of the main roads in xishuangbanna, then we studied the impact of population density and the topographic factor on road effects. during the study both the comprehensive land use dynamic degree model and the land use degree comprehensive index model are taken into account, we put forward a compensatory model ? “ amendatory comprehensive land use dynamic degree model ”
由於人類活動干擾強度加大，公路效應深度不斷擴展， 1976年為5km ， 1988年為7km ， 2003年達到11km ;受自然、社會條件的影響，不同路段的公路效應存在較大差異，甚至同一路段兩側效應也各不相同。 1976年至2003年，距公路不同距離范圍內的人口密度都在增加，且距離公路越近，人口數量密度越大、增長越快，人口分布有向公路兩側聚集的趨勢。選取人口密度為大、中、小三個樣區分別分析公路效應的范圍表明，人口密度 -
On the basis of single factor experiment, 3 factors 3 levels orthogonal experiment was adopted to study impact of bean dregs powder, linseed oil, xylitol syrup on peel quality and tea powder, bean dregs powder, butterine on stuffing quality
實驗在單因素基礎上採用3因素3水平正交實驗研究了豆渣粉、亞麻油、木糖醇糖漿對月餅皮品質的影響以及茶粉、豆渣粉、人造奶油對月餅餡料品質的影響，並對其理化指標，營養素組成進行分析。 -
Impact of mifepristone on the serum and chorion epidermal growth factor and correlation hormone
米非司酮對血清及絨毛組織中表皮生長因子及相關激素的影響 -
Establishing an human spine dynamic model is an significan event to study spine injured biomechanics of pilot " s ejective injury, parachute opening, landing and study the endurance to impact loading on human spine. in this paper, the huston " s method of kane " s equations is developed so that it can be applied to the multibodysystem including translation between the bodyies. the dynamic model of human spine is provided basing on these theories, while the big movement of spine is considered. the deformation of vetebra is far smaller comparing with the intervetebra disc, so the spine is considered into multibodysystem including rigid bodies ( vetebra ) and the flexible bodies ( intervetebra disc ). the computer solution correspond with the results of the large scale human impact test. the rigid coefficient factors and the damping factor of intervetebra joints are obtained
人體脊柱動力學模型的建立對研究飛行員彈射救生、傘兵跳傘開傘、著陸等脊柱損傷的生物力學以及研究人體脊柱耐受沖擊載荷的極限問題都具有重要意義.首先發展了凱恩方程的休斯頓方法，使其可應用於變形體連接的多體系統，並以此理論為依據建立人體整椎脊柱沖擊動力學模型，此時考慮脊柱的大位移運動，每個椎骨的變形相對椎間盤的變形小得多，把脊柱看成由剛體（椎骨）和變形體（椎間盤）組成的多體系統.並以大型真人坐姿沖擊實驗結果進行了擬合，最後得到腰椎間關節剛度系數因子和阻尼系數因子 -
But with wind power capacity enlarging constantly and stochastic and incontrollable wind energy, wind asynchronous generator " s frequent startup will take inverse impact to wind power system stability, which is one of the most important restricting factor on wind power " s large - scale development
然而，隨著風電裝機容量的不斷擴大，風能的隨機性和不可控性，使得相對頻繁起動的風力異步發電機，對風電系統穩定性的影響也愈來愈大，成為制約風力發電規模發展的主要因素之一。 -
On the base of summarizing and evaluating chinese soil erosion models, this paper brings forward future developing directions that the soil erosion models should pay attention to : ( 1 ) paying attention to the theory researches of soil erosion models, consummating from erosion factors basis erosion prediction to erosion processes quantity and theory researches, studying each erosion factor and its interaction impact on erosion processes, and sediment dispersion, transportation and deposition action on complex slopeland, as well as different catchments scales ; ( 2 ) reinforcing the study of gravitation erosion and cave erosion mechanism, and big and middle scale catchments erosion models ; and ( 3 ) making the best of advanced rs and gis technology, providing plentiful datum for erosion models researches, making and for soil erosion models checkout
在總結和評價中國土壤侵蝕模型的基礎上，提出了今後土壤侵蝕模型應該注重的發展方向： （ 1 ）注重土壤侵蝕模型的理論研究，將從以侵蝕因子為基礎的侵蝕預報向侵蝕過程的量化研究和理論完善，研究各侵蝕因子及其交互作用對侵蝕過程的影響，泥沙在復雜坡面以及不同流域尺度間的分散、輸移和沉積作用； （ 2 ）加強對重力侵蝕、洞穴侵蝕機制的研究，加強對大中流域侵蝕模型的研究； （ 3 ）充分利用先進的rs 、 gis技術，為侵蝕模型的研究提供大量的數據源，以利於對土壤侵蝕模型的檢驗。 -
To mould rate in china, there is not an authoritative and applicable calculation of mould price. because of the large impact of human factor, the price of mould is very confusable
就目前我國模具價格而言，缺少權威性強、適用性廣的的模具價格計算方法，人為因素影響很大，這些都造成了我國模具的價格的混亂。 -
Abstract : the environmental economic cost - benefit analysis is discussed in this essay, including identification and screening qualification of impact factor, the calculation and impact of economic cost - benefit
文摘:建設項目環境影響評價工作中的環境經濟損益分析通常採用費用? ?效益法。 -
The research about efficient learning " impact factor and inter procedure is a hot field which educational psychologists are interested in. the theory of achievement goal orientation, which integrates motivation research and cognition research that were once separate from each other, is now becoming the outstanding representative of social cognitive theory in the field of motivation, and has deepened our understand of learning * inter procedure in micro - concept as well
研究有效學習的影響因素和內在機制，一直是國內外教育心理學家感興趣的課題。成就目標定向理論在社會認知的框架中，整合了曾經分離的動機和認知研究，它在更微觀的層面上加深了我們對學習內在機制的理解。 -
This paper points out the limitations of the impact factor ( if ) in the evaluation of scitech periodicals so as to objectively recognize the evaluating function of if via analyzing their various restricting factors. meanwhile, it analyzes the current status of lower if and higher self - cited rate in the scitech periodicals of china and puts forward some suggestions for improving the if value
通過對制約影響因子的各種因素進行分析，提出其在科技期刊評價中的局限，以期客觀認識影響因子的評價功能;並對目前國內期刊影響因子較低、自引率較高的現狀進行了剖析，同時提出一些針對性的建議和意見。 -
Compared with farmland, the spatial distribution of orchard expressed very different characteristics. under continuous scale, distribution of orchard showed a regular pattern such as unevenness small scale : side length of the box was shorter than 8 cells - evenness small and moderate scale : the length was among 8 and 50 cells - unevenness moderate scale : the length was among 50 and 200 cells - evenness moderate and large scale : the length was longer than 200 cells ; human landscape transformation was the major impact factor of landscape changing, and a kind of moderate scale impact factor. the terrain was only a background impact factor ; during domestic landscape transforming in the working area, because the ecological maintenance value of two agricultural elements were not considered, their structural and functional equilibrium decreased gradually
果園在中尺度區間的空間分佈與農田相比表現出顯著的差異，連續尺度的空間分佈表現出不均勻小尺度：滑箱邊長小於8個像元均勻中小尺度：邊長在850個像元之間不均勻中尺度：邊長在50200個像元之間均勻中大尺度：邊長大於200個像元的變化規律4人為改造作用是景觀動態變化的主要驅動力來源，並且表現為一種中尺度影響過程，地形因子則為背景性影響因素5景觀改造活動由於未能兼顧農業組分在區域生態穩定性維護方面的價值，兩種組分的整體結構和功能穩定性有所降低。 -
Based on experience from production and study of vanilla bean extract over ten years, the process and application of vanilla bean extract in tobacco, food and flavor industries were introduced in this paper, especially the impact factor on quality of vanilla bean extract and identification of adulteration were also included
摘要本文主要敘述了作者在十多年來香莢蘭豆萃取物的生產研究和學習心得，在我國卷煙、食品、香料香精工業中對香莢蘭豆萃取物的加工及應用日益增多的今天，具有一定的參考和借鑒作用。 -
Authors used auto - correlation method and took longhua area, shenzhen city, as working area to study the spatial structure characteristics of landscape pattern and their contributing factors. the results indicated that all the landscape structure variables, which were used in the analysis process, expressed good structure features. it means that the landscape pattern of working area was formed by some kinds of driving forces which could not only cover the whole area, but also had good continuity. detailed analysis resulted that the elevation differences were only the background impact factor of the landscape spatial pattern, but the intensive artificial landscape reforming of the fast urbanization process was the main contributing factor, which made the significant differences of landscape structure between 1988 and 1996. since 1990, the landscape of working area has gradually changed to a landscape dominated by human impact
利用空間自相關分析方法，以深圳市華地區為例，對快速城市化景觀的空間結構特徵及其成因進行了研究。參與分析的景觀結構變量均表現出較好的結構性，表明該地區景觀是在一種既可以覆蓋全區，又具有良好連續性的驅動機製作用下形成的。進一步詳細分析結果表明，工作區內的地形條件差異是景觀空間分佈格局成因的背景性因素，而快速城市化過程中人類活動的強烈改造作用，是導致1988年和1996年景觀結構特徵發生顯著差異的根本性影響因素。 -
The influences of random material parameters and dimensional parameters on the performance of a micro - gyroscope were quantitatively described by a so - called impact factor based on the probability theory
通過所提出的影響因子這一概念反映了微陀螺參數變異對性能變異的敏感度。 -
Improving impact factor of university journals via open access
利用開放存取提高高校自然科學學報的影響力 -
High impact factor journal
收錄的高影響因子細胞生物學期刊 -
Establishment of the impact factor system for land price of the urban fringe based on d - s - r model
太原市萬柏林區城鄉結合部的土地利用變化 -
Scientific publication ; sci ; impact factor ; peking university
科技論文sci影響因子北京大學 -
Rerecognization of the impact factor of the scitech periodicals of china
再識國內科技期刊的影響因子
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