Radio-Astronomy and Navigation

1958 ◽  
Vol 62 (575) ◽  
pp. 805-828 ◽  
Author(s):  
C. M. Cade
Keyword(s):  
Great Britain ◽  
Visual System ◽  
Radio Astronomy ◽  
Weather Conditions ◽  
The Sun ◽  
Adverse Weather Conditions ◽  
Adverse Weather ◽  
Practical Design ◽  
Design Factors ◽  
Made In

The difficulties of determining latitude and longitude under adverse weather conditions, when neither the Sun nor stars can be sighted, are well-known, and the advantages of a non-visual system of position finding which could operate through clouds or fog are too obvious to require emphasis.A Radio Sextant, which detects and locks-on to 8 mm. radiation from the Sun, has already been made and tested in America with reputedly excellent results. An analysis of both the theoretical and the practical design factors is given in the present paper, together with the results of successful experiments made in Great Britain.

scholarly journals Effects of 1988 Fires on Aquatic Systems of Yellowstone National Park

1989 ◽  
Vol 13 ◽  
pp. 200-205
Author(s):  
G. Minshall ◽  
Christopher Robinson
Keyword(s):  
National Park ◽  
Weather Conditions ◽  
Benthic Invertebrate ◽  
Reference Sites ◽  
Invertebrate Community ◽  
Adverse Weather Conditions ◽  
Adverse Weather ◽  
The Us ◽  
Benthic Invertebrate Community ◽  
Made In

Collections and measurements were made in September-October 1988 at 18 burn and four unburned reference sites (Table 1) and in March 1989 at 12 of the burn and one of the unburned sites under support from the National Science Foundation and the US Fish and Wildlife Service. These are being processed and analyzed as part of the present project. In addition, the original 22 burn and reference streams were examined again during August 1989 for comparison with conditions found just after the fire. With a few minor exceptions (e.g., the recording thermometers at a few sites were broken or missing) all of the information specified in our research proposal for September-October 1988 and August 1989 was obtained. Adverse weather conditions or "bear closures" prevented the assessment of all 22 sites in March but the data from the 12 sites that were sampled for invertebrates, periphyton, and organic matter appear to be sufficient to strongly suggest that changes in food quality due to the fire had an adverse effect on the benthic invertebrate community as we had hypothesized (see below).

scholarly journals Ship Handling in Unprotected Waters: A Review of New Technologies in Escort Tugs to Improve Safety

2021 ◽  
Vol 2 (1) ◽  
pp. 46-62
Author(s):  
Santiago Iglesias-Baniela ◽  
Juan Vinagre-Ríos ◽  
José M. Pérez-Canosa
Keyword(s):  
High Performance ◽  
New Technologies ◽  
Weather Conditions ◽  
Hull Form ◽  
Best Available Technologies ◽  
Adverse Weather Conditions ◽  
Adverse Weather ◽  
New Type ◽  
Technological Challenge ◽  
And Performance

It is a well-known fact that the 1989 Exxon Valdez disaster caused the escort towing of laden tankers in many coastal areas of the world to become compulsory. In order to implement a new type of escort towing, specially designed to be employed in very adverse weather conditions, considerable changes in the hull form of escort tugs had to be made to improve their stability and performance. Since traditional winch and ropes technologies were only effective in calm waters, tugs had to be fitted with new devices. These improvements allowed the remodeled tugs to counterbalance the strong forces generated by the maneuvers in open waters. The aim of this paper is to perform a comprehensive literature review of the new high-performance automatic dynamic winches. Furthermore, a thorough analysis of the best available technologies regarding towline, essential to properly exploit the new winches, will be carried out. Through this review, the way in which the escort towing industry has faced this technological challenge is shown.

Statistical analysis and critical review of navigational accidents in adverse weather conditions

2018 ◽  
Vol 163 ◽  
pp. 502-517 ◽  
Author(s):  
N.P. Ventikos ◽  
A.D. Papanikolaou ◽  
K. Louzis ◽  
A. Koimtzoglou
Keyword(s):  
Statistical Analysis ◽  
Critical Review ◽  
Weather Conditions ◽  
Adverse Weather Conditions ◽  
Adverse Weather

Gendered Experiences of Mobility

Transfers ◽  
2013 ◽  
Vol 3 (3) ◽  
pp. 79-98 ◽  
Author(s):  
Shahnaz Huq-Hussain ◽  
Umme Habiba
Keyword(s):  
Middle Class ◽  
Travel Behavior ◽  
Weather Conditions ◽  
Capital City ◽  
Mobility Patterns ◽  
Security Issues ◽  
Adverse Weather Conditions ◽  
Adverse Weather ◽  
The City ◽  
Detailed Picture

This article examines the travel behavior of middle-class women in Dhaka, the capital city of Bangladesh and one of the world's largest and most densely populated cities. In particular, we focus on women's use of non-motorized rickshaws to understand the constraints on mobility for women in Dhaka. Primary research, in the form of an empirical study that surveyed women in six neighborhoods of Dhaka, underpins our findings. Our quantitative and qualitative data presents a detailed picture of women's mobility through the city. We argue that although over 75 percent of women surveyed chose the rickshaw as their main vehicle for travel, they did so within a complex framework of limited transport options. Women's mobility patterns have been further complicated by government action to decrease congestion by banning rickshaws from major roads in the city. Our article highlights the constraints on mobility that middle-class women in Dhaka face including inadequate services, poorly maintained roads, adverse weather conditions, safety and security issues, and the difficulty of confronting traditional views of women in public arenas.

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