So this article introduces a kind of reasonable computing model, and applies it to calculating the sight distance that provided by crest vertical curves, moreover integrates it and method of PVSD to specify from quantity the principle of combining plane and vertical curves which belong to the freeway of plain district.
故本文引進(jìn)一種較為合理的計(jì)算模型,來(lái)計(jì)算凸豎曲線上所能提供的視距,并結(jié)合PVSD法來(lái)具體量化平原區(qū)高速公路平曲線和凸豎曲線的組合原則,以期得到視覺(jué)效果最佳的立體線形。
The evaluation indexes of psychological and physiological burden degrees are established based on experiment and statistics method by research sight distance on single curve.
以單曲線部行車(chē)視距為研究對(duì)象 ,用實(shí)驗(yàn)和數(shù)理統(tǒng)計(jì)的方法建立駕駛員心理生理上負(fù)擔(dān)程度的評(píng)價(jià)指標(biāo) ,評(píng)價(jià)現(xiàn)有公路的行車(chē)安全性和舒適性 ,并提出改進(jìn)方案。
In the aspects of viewshed,and the view distance as well as psychological experience of the viewer,the paper analyzed comparatively the changes in the landscape visual features of the comprehensive natural lands.
從空間視域、視距與觀景者視覺(jué)接收后所產(chǎn)生的心理體驗(yàn)等幾個(gè)方面,比較分析了長(zhǎng)江在三峽成庫(kù)前的常年洪水位、成庫(kù)后的145與175 m水位下沿江景觀視覺(jué)特征的變化。
By means of deciding view angle α, the view distance d is controlled, the vanishing points are adjusted and the view points is got automatically.
闡述了一種透視投影的方法，通過(guò)預(yù)定視角α，自動(dòng)控制視距ｄ和調(diào)整滅點(diǎn)，獲取視點(diǎn)，并重建三維信息，從而易于選擇視域，增加了直觀性，減少了透視圖形生成過(guò)程中的盲目性。
Visual range prediction for thermal imaging system by different static performance models;
基于不同靜態(tài)性能模型的熱成像系統(tǒng)視距估算
Based on the static performance of thermal imaging systems , a mathematical model for the visual range prediction adaptal for extended source target is studied.
從熱成象系統(tǒng)靜態(tài)性能出發(fā)，研究了熱成象系統(tǒng)對(duì)擴(kuò)展源目標(biāo)的視距估算模型。
Based upon the signal to noise ratio of the image and static performance of thermal imaging systems, the effect of scene radiant characteristics to the visual range prediction of thermal imaging systems is studied in the prisent paper.
從圖象信噪比及熱成象系統(tǒng)靜態(tài)性能出發(fā)，研究了景物輻射特性對(duì)熱成象系統(tǒng)視距的影響。
The design principles of classroom s tables and chairs with physical e ngineering are to hold physical backbones natural and sitting tight and good opt ic angle and to consciously hold learning stadia from the start of physical engi neering so as to avoid myopia and backbone damage.
人體工學(xué)課桌椅的設(shè)計(jì),從人體工學(xué)的原理出發(fā),通過(guò)保持人體脊椎的自然挺直及視覺(jué)角度,自覺(jué)地保持了學(xué)習(xí)的視距,從而有效地防止近視眼的發(fā)生,也有效地防止了脊椎勞損。