語系:
繁體中文
English
說明(常見問題)
圖資館首頁
登入
回首頁
切換:
標籤
|
MARC模式
|
ISBD
Influence of pavement reflection on target visibility.
紀錄類型:
書目-電子資源 : Monograph/item
正題名/作者:
Influence of pavement reflection on target visibility.
作者:
Gibbons, Ronald Bruce.
面頁冊數:
240 p.
附註:
Advisers: W. K. Adrian; G. Hepplar.
附註:
Source: Dissertation Abstracts International, Volume: 59-09, Section: B, page: 4976.
Contained By:
Dissertation Abstracts International59-09B.
標題:
Engineering, Civil.
電子資源:
http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=NQ30612
ISBN:
0612306127
Influence of pavement reflection on target visibility.
Gibbons, Ronald Bruce.
Influence of pavement reflection on target visibility.
[electronic resource] - 240 p.
Advisers: W. K. Adrian; G. Hepplar.
Thesis (Ph.D.)--University of Waterloo (Canada), 1998.
An investigation of the surface roughness of the sample was also undertaken to investigate the possibility of relating the reflection properties to the physical properties of the pavement. No relationship was found to the reflection data but the roughness was used towards the development of an analytical model of the reflection properties.
ISBN: 0612306127Subjects--Topical Terms:
212394
Engineering, Civil.
Influence of pavement reflection on target visibility.
LDR
:04230nmm 2200349 450
001
154974
005
20021105151509.5
008
230530s1998 ||||||||||||||||| ||eng d
020
$a
0612306127
035
$a
00087499
035
$a
154974
040
$a
UnM
$c
UnM
100
0
$a
Gibbons, Ronald Bruce.
$3
212558
245
1 0
$a
Influence of pavement reflection on target visibility.
$h
[electronic resource]
300
$a
240 p.
500
$a
Advisers: W. K. Adrian; G. Hepplar.
500
$a
Source: Dissertation Abstracts International, Volume: 59-09, Section: B, page: 4976.
502
$a
Thesis (Ph.D.)--University of Waterloo (Canada), 1998.
520
#
$a
An investigation of the surface roughness of the sample was also undertaken to investigate the possibility of relating the reflection properties to the physical properties of the pavement. No relationship was found to the reflection data but the roughness was used towards the development of an analytical model of the reflection properties.
520
#
$a
The influence of the reflected light calculation on the design weighted Visibility Level of the roadway is very small. The impact was calculated for differing road surfaces and installation types and very little influence was found. The impact of the reflected light is very significant to individual target locations. (Abstract shortened by UMI.)
520
#
$a
The pavement reflection data which currently exists is valid for a one degree observation angle only and can be used only for the background pavement luminance. It is not valid for the target luminance calculation. This research is the investigation of the surface reflection properties in order to fully describe the scatter of reflected light in all directions. Using samples of several pavement types, the reflection properties of the surfaces were measured. These measurements were then analyzed in terms of the surface characteristics.
520
#
$a
The properties of light reflecting from pavement surfaces have been studied for several years in both Europe and North America.
520
#
$a
This reflection data has been used in the development of a computer program which calculates the pavement luminance, the target luminance and the visibility level. The visibility level for several installations has been calculated. These test installations which have been studied by other researchers, have provided actual target luminance and background luminance measurements. The results of the calculations have then been compared to the data provided. It was found that the calculated contribution of the reflected light to the target luminance follows the same trend as the measured results. This verifies both the calculation methodology and the nature of the reflection data.
520
#
$a
To calculate the visibility of objects on the pavement, a model of visual sensitivity is used to calculate the required contrast of an object to its background. The required contrast, called the contrast threshold, is then compared to the actual contrast of the object. The ratio of these two values is called the visibility level. The average of this visibility level, calculated for several points on the roadway, is then established as the criteria for the quality of the roadway lighting design. In order to calculate the contrast threshold and the actual contrast, both the background luminance of the target and the target luminance must be calculated. The background luminance of the target is based on a calculation which has been established for several years. The target luminance, however, is not as simple. It is calculated from both the direct light from the luminaires and the indirect light reflected from the pavement surface. Both of these calculations, the background and target luminance, require knowledge of the reflection properties of pavement surfaces.
590
$a
School code: 1141.
650
# 0
$a
Engineering, Civil.
$3
212394
650
# 0
$a
Urban and Regional Planning.
$3
212416
690
$a
0543
690
$a
0999
710
0 #
$a
University of Waterloo (Canada).
$3
212557
773
0 #
$g
59-09B.
$t
Dissertation Abstracts International
790
$a
1141
790
1 0
$a
Adrian, W. K.,
$e
advisor
790
1 0
$a
Hepplar, G.,
$e
advisor
791
$a
Ph.D.
792
$a
1998
856
4 0
$u
http://libsw.nuk.edu.tw/login?url=http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=NQ30612
$z
http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=NQ30612
筆 0 讀者評論
全部
電子館藏
館藏
1 筆 • 頁數 1 •
1
條碼號
館藏地
館藏流通類別
資料類型
索書號
使用類型
借閱狀態
預約狀態
備註欄
附件
000000000070
電子館藏
1圖書
電子書
EB
一般使用(Normal)
在架
0
1 筆 • 頁數 1 •
1
多媒體
多媒體檔案
http://libsw.nuk.edu.tw/login?url=http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=NQ30612
評論
新增評論
分享你的心得
Export
取書館別
處理中
...
變更密碼
登入