gradient direction 中文意思是什麼
gradient direction
解釋
漸變方向-
To corner feature, both gradient magnitude change and direction change of gradient vector are discontinuity in a local image neighborhood, hence gradient - direction variation and gradient magnitude are used as another decision rule of the corner detection to improve antinoise
為了提高抗噪聲，根據角特徵不僅灰度變化是不連續的，且相對周圍其他點的梯度方向也是不連續的，提出利用梯度角變化和梯度幅值作為角特徵檢測的另一個準則。 -
The temperature of surface concrete varies with environmental temperature, but the conductibility of inner concrete is very poor. as a result, a quick decrease of environmental temperature will lead to large temperature gradient and then tensile stress develop soon in the thick direction, which will probably occur on the entire cross - section
混凝土表面溫度隨外界溫度波動而波動，但內部的導溫性能很差，所以在外界溫度驟降時將引起很大的溫度梯度，從而在厚度方向上拉應力發展很快，這極易引起全斷面拉應力發生。 -
Let / be a function from rn to r. following the definitions of the generalized gradients proposed by clarke and xu yihong, respectively, we define the d - regular weak lipschitz function and propose a new generalized gradient as follows where d _ f ( x ; d ) is the directional derivative of / in the direction d at the point x, namely some properties are proposed
第二節引入基本定義和記號，在clarke和徐義紅提出的各自的廣義梯度的基礎上，定義了一類d正則弱l函數，且提出了一個新的廣義梯度。設f ： r ~ n r ，其廣義梯度為其中為f在處沿方向d的方向導數，即並給出了若干性質定理。 -
The authors put forwards a new method which select the terrain profile perpendicular to falling line ( opposite direction of gradient ) to determine the candidate points on ridge and valley
摘要利用有關數學原理從理論上對地形高程斷面極值法進行了分析和深入的研究，指出了該方法的不足。 -
According to the direction and damping characteristic of the torque produced by the magnetorquers, the three axis attitude control schemes of gravity gradient satellite and other satellite with damper is presented. the control coefficients are determined by the dynamic characteristics of geomagnetic intensity, so the attitude control precision is improved
根據磁力矩在地磁場中的定向阻尼特性，提出了磁控重力梯度衛星和攜帶阻尼器的非重力梯度姿態控制規律，根據地磁場強度變化規律選擇控制系數，提高衛星的姿態控制精度。 -
2. building the grid - framed dem of viet nam and the grid - layer chart with the properties of gradient and direction with geographical information system technology ( gis ) and contour line with rate of 1 : 500, 000
（ 2 ）採用地理信息系統技術，以及越南1 : 50萬比列尺的等高線資料，建立越南地區柵格結構的數字高程模型（ dem ） ，以及屬性為坡度和坡向的柵格圖層。 -
According to more effect, when the hore component is placed in a gradient field, at the same time the direction of the current is perpendicular to the direction of the voltage, then between the two parallel side face come out the hore voltage. when hore component is set in this kind of uni - gradient magnetic field and the electric current is unchanged, the voltage output of hore component will be proportional to the position of the hore component in the magnetic field. so we can use the hore component to measure the movement of hore component against magnetic field
根據霍爾效應可知，置於磁場中的霍爾元件若電流方向與磁場方向垂直，則在霍爾元件垂直於磁場和電流方向的兩個側面將產生電勢，將霍爾元件置於強度隨空間位置線性變化的磁場中，且控制電流恆定，輸出就正比于霍爾元件處于磁場中的位置，因此可以用霍爾元件來測量磁場與霍爾元件間的相對位移量。 -
The key to prediction of casting shrinkage / porosity lies in ascertaining the critical value of temperature gradient and niyama criterion. the thesis put forward two methods to ascertain the value, one is which is positive - direction and the other is negative - direction. we verify the realistic arithmetic of temperature gradient method and niyama criterion method by experiment, and we can draw a conclusion that the arithmetic is correct and reasonable in most cases and choice of developing tool is sound
臨界梯度值和新山判據臨界值的確定是實現縮孔縮松預測的關鍵，本文提出了確定臨界值的正向法和反向法，並以高鉻鑄鐵件縮孔縮松預測和鑄造工藝改進為研究對象，應用正向法，確定了溫度梯度法的臨界值為180 m 。 -
It has been deduced that the search direction remains the same but that the step length decreases in optimizing the improved cost function with the conjugate gradient algorithm from the gradient of the cost function that the fir filter apporaches the contrary point spread function ( psf ) more, and that the estimated image is closer to the original one
從代價函數的梯度入手推導出共軛梯度演算法，其搜索方向保持不變而搜索步長變小，使濾波系數更加退近於點擴展函數逆運算元，從而使估計圖像與原始圖像更加接近。 -
When water in the soil or in the xylem is put under tension, due to the evaporation of water from a particular site ( which creates a water potential gradient in the direction of the evaporation ), capillarity enables water to overcome the cohesive forces within the water and move against gravity in response to the water potential gradient
當土壤中或木質部中的水受到張力作用時，由於特定部分水的蒸發（沿著蒸發方向形成水勢梯度） ，毛細現象可以使水克服水分子之間的內聚力並同時沿著水勢梯度逆著重力作用移動。 -
The output of vector hydrophone contains the spatial direction information, in the other word, the output has different phase gradient to signal with different direction
它是利用了矢量水聽器四個陣元的輸出所蘊含的空間方位信息，通過對一個方向信號延遲的補償相減達到此方向信號的抵消的目的。 -
In view of the fact that there is often a gradient in the external magnetic field in true magnetic separation equipment, and its direction is often not identical with that of magnetic field, a formula of the magnetic force exerting on the magnetic particles is deduced and the factors influencing the magnetic force are analysed
考慮實際磁選設備中外部磁場常有梯度，並且磁場梯度方向常與磁場方向不一致的情況，推導出了磁性礦粒所受磁力公式，分析了影響磁力的因素。 -
In this application, the lorentz force generated by the interaction between the current in the wire and the geomagnetic field produces an electro - dynamic drag leading to a fast orbital decay. in this paper, we make an intensive study of the process of de - orbiting using electro - dynamic tether system. the concrete work includes : firstly, i have studied the basic principle of how to generate the electro - dynamic drag, modeled via accuracy geomagnetism, made a concrete analysis of the de - orbiting duration, the magnitude and direction of electro - dynamic drag under the action of the dipole and accurate geomagnetic models, set up a counterbalance between electro - dynamic torque and gravity gradient torque, emulate the de - orbiting process of spacecraft, and compared the change of six orbital factors and the de - orbiting duration under the action of the dipole and accurate geomagnetic models
本文對基於電動力纜繩的航天器離軌過程進行了深入研究，具體工作如下:首先，本文研究了電動力纜繩產生電動力拉力的基本原理，建立了精確地磁場模型;分別在偶極子模型和精確地磁場模型作用下，對電動力拉力的大小、方向、離軌時間及電動力纜繩傾角的大小進行了計算分析;建立了電動力力矩與纜繩系統重力梯度力矩的平衡關系;分析了電動力力矩為系統提供能量的原理;最後分別在偶極子地磁場模型和精確地磁場模型作用下，對受電動力纜繩作用的航天器的離軌過程進行模擬，分析了在不同精度地磁場模型下，航天器離軌過程中各軌道參數的變化情況，並比較了不同模型對離軌時間的影響。 -
On the basis of the chavacteristic that the interferometric fringes have minimum gradient in the tangent direction, this paper employs the spin filtering with curved windows along the fringe tangent direction for interferometric phase images, and its feasibility and efficiency in keeping the fringe information, suppression the noise and improving the unwrapping precision are proved through comparing the different filtering methods and the corresponding phase unwrapping results
文中根據干涉條紋在切線方向變化最小的特點，利用沿切線方向的曲線窗口對干涉相位圖進行旋濾波降噪，並通過對比不同的濾波結果及相應相位解纏結果，證明了旋濾波在保持條紋結構信息，消除噪聲和提高相位解纏精度應用中的可行性和有效性。 -
The article analyzes the traditional ways for modeling the turning point and the gradient, then puts forwards the better ways for it by using model to set down the direction in turning point and measuring in the midline, thus enhancing the efficiency
摘要分析了轉點和坡度放樣的傳統方法，提出了採用模型放樣折線洞中線、在洞中線掛線上量測長度進行坡度放樣的簡易方法，提高了工作的效率。 -
The fem results indicated that as to the rough surfaces in sliding contact, the value of the contact pressure was very high which coursed a high value of the heat flow rate, meanwhile the sliding time was not enough for the frictional heat to transfer, thus the highest value of the body temperature occurred just on the sliding surfaces, which possessed a sharp thermal gradient in direction perpendicular to the sliding surface. so the great thermal stress was caused just by the sharp gradient and the thermal elastic distortion with which the contact pressure changed occurred simultaneously, thus this change of the contact pressure would affect the temperature distribution in return
對于相對滑動的粗糙表面，因實際接觸面積小而導致接觸壓力很大，這樣使得熱流密度會很大，同時由於滑動時間很短，熱來不及傳導，最高溫度發生在摩擦表面，在垂直於摩擦面的方向有很大的溫度梯度，使得熱應力很大，且最大應力發生在表面，同時產生熱彈性變形，這種變形使得接觸區域內的壓力分佈發生變化，這種變化又反過來影響了接觸區域的溫度分佈。 -
Observing that the newton direction is always a descent direction of the square norm of the gradient, even if it is not a descent direction of the objective function, which will result some linear research - such as armijo research or wolfe research - fail
因此，該演算法是頗受歡迎的演算法之一。然而，若問題的目標函數的hessian陣不正定，則不能保證演算法產生的方向是目標函數的下降方向。 -
To deblur edge after image magnifying, an adaptie edge sharpness presering image magnification is put forword, which can fit edges of any direction, gradient and amplitude, utilizing the gradient imgormation of the image and the properties of the hyperbolic tangent function haing reiewing the character of a typical edge
針對圖像放大后出現邊緣模糊的現象，論文考察了典型邊緣的特徵，利用圖像的梯度信息和雙曲正切函數的性質，提出了一種較好地擬合任意方向、陡度和幅度的邊緣，因此能夠保持邊緣銳度的自適應圖像放大演算法。 -
Then based on the gradient projection method, the gradient projection direction is deduced. the gradient direction is the base for sensitivity analysis
接著，根據投影梯度法，推導出了投影梯度方向，該梯度方向是靈敏度分析的基礎。 -
The method of bispectrum reconstruction detects fracture zones by learning the difference of frequency components because fracture can change the frequency components of seismic responses. the theory of time - frequency analysis computes the difference in the gradient direction of time - frequency spectrum
雙譜重構的方法就是根據裂縫會改變地震波頻率成分的基本想法，通過求取具有不同頻率成分的地震波的差異來實現對裂縫發育帶的檢測的。
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