Position Fixing in Aircraft During Long Distance Flights Over the Sea

1920 ◽  
Vol 2 ◽  
pp. 3-24
Author(s):  
T. Y. Baker ◽  
L. N. G. Filon
Keyword(s):  
Dead Reckoning ◽  
Position Angle ◽  
Slide Rule ◽  
Long Distance ◽  
Astronomical Observations ◽  
Constant Altitude ◽  
Working Out

Air navigation has so far been only by dead reckoning; with long distance flights overseas such methods are no longer adequate.—Methods of position fixing by astronomical observations.—Difficulties of taking sights in the air.— Visibility of the horizon.—Cloud horizons.—“Dip.”—The Baker Air Sextant.— Gravity controlled vertical for sight taking.Difficulties of working out the observations in the air.—The navigation machine.—Curves of constant altitude and constant position angle.—The equations of their mercator projections.—The radii of curvature.—Error of declination treated as a correction to altitude.—Special slide rule.—Star curves.—Chronometers for air work.—Practical construction of altitude and position angle curves.—Checks upon the accuracy.Run between sights.—Theoretical case.

A Dead Reckoning Computer

1953 ◽  
Vol 6 (1) ◽  
pp. 59-62
Author(s):  
A. Blom-Bakke
Keyword(s):  
Dead Reckoning ◽  
Angle Measurement ◽  
Distance Measurement ◽  
Slide Rule ◽  
Straight Line ◽  
Measuring Scale ◽  
Distance Measuring

The procedures of dead reckoning require a number of different steps, amongst which are distance measurement, angle measurement, construction of straight-line tracks, the solution of the vector triangle and the process of multiplication and division. The navigator's plotting and dead reckoning instruments are designed to meet these needs. The ruler serves both as a distance-measuring scale and as a means of drawing a straight line track; the protractor measures angles; the dividers measure distances and the Dalton computer serves both as a method of solving the vector triangle and as a circular slide rule for multiplication and division.

Modern Nautical Tables

1956 ◽  
Vol 9 (4) ◽  
pp. 444-444
Keyword(s):  
Royal Navy ◽  
New Techniques ◽  
Astronomical Observations ◽  
Working Out ◽  
Nautical Almanac

With modern sight reduction tables, new techniques of working out astronomical observations and the recent changes in the Abridged Nautical Almanac, it has been found that many of the hitherto necessary mathematical tables included in the majority of the nautical tables are now no longer used in the Royal Navy. An analysis in the Royal Navy's navigation school, H.M.S. Dryad, has revealed that only about a third of the tables in each of the three most used books of nautical tables, Burton's, Inman's and Norie's, are used in the Royal Navy.

FCNC PROCESS IN B DECAY AND THE VECTOR MESON DOMINANCE

1999 ◽  
Vol 14 (25) ◽  
pp. 1701-1712
Author(s):  
SURATH KUMAR BISWAS ◽  
V. P. GAUTAM
Keyword(s):  
Vector Meson ◽  
Short Distance ◽  
Distance Effect ◽  
Vector Meson Dominance ◽  
Matrix Elements ◽  
Long Distance ◽  
Inclusive Decays ◽  
The Matrix ◽  
Working Out

We investigate how the vector meson dominance affects the O(αs) virtual corrections in addition to the bremsstrahlung correction while working out the matrix elements for b→sγ and b→ dγ decays. Long-distance effect alone is not appreciable but it is a good supplement to the short-distance contribution. We obtain better results for the inclusive decays.

scholarly journals KONFLIK KERJA-KELUARGA PADA ISTRI YANG BEKERJA & MENJALANI LONG DISTANCE MARRIAGE

MANASA ◽  
2020 ◽  
Vol 9 (2) ◽  
pp. 16-29
Author(s):  
Nanda Rossalia ◽  
Dwi Larasati ◽  
Mohammad Adi Ganjar Priadi
Keyword(s):  
Structure Interview ◽  
Future Research ◽  
Work Family Conflict ◽  
Long Distance ◽  
Marriage Satisfaction ◽  
Semi Structure Interview ◽  
Work Family ◽  
Parent Conflict ◽  
Age Of Marriage ◽  
Working Out

Every woman has a chance to work in any kind of job with any responsibilities, such as workingout of their domicile. For working wives, the differences between a husband’s and a wife’s rolesin the family make the working wive face a lot of conflicts due to their dual role as a worker anda homemaker. It also give effort of every women to make their life steady, even if they have multirole in their families. This can affect marriage satisfaction that it needs a good conflictmanagement to resolve the work-family conflict. This research aims to see the overview of workfamily conflict for wives who are working out of their domicile. This research is using qualitativemethod with semi-structure interview. Participants are wives who are working out of theirdomicile, as a vocal instructure (35), flight attendant (27), and geologist (44), having children anda working husband. Results show that all three participants have had different types of conflict ina various context and experience. Participants experienced job spouse conflict, job parent conflict,and job homemaker conflict. Future research should put focus on related variable with work familyconflict, such as age of marriage, conflict management, and so on.

Time and Latitude in South Africa

1972 ◽  
Vol 1 ◽  
pp. 27-38
Author(s):  
J. Hers
Keyword(s):  
South Africa ◽  
Cape Town ◽  
Astronomical Observations ◽  
Royal Observatory ◽  
The Republic ◽  
Astronomical Determination ◽  
Limited Accuracy ◽  
Better Than

In South Africa the modern outlook towards time may be said to have started in 1948. Both the two major observatories, The Royal Observatory in Cape Town and the Union Observatory (now known as the Republic Observatory) in Johannesburg had, of course, been involved in the astronomical determination of time almost from their inception, and the Johannesburg Observatory has been responsible for the official time of South Africa since 1908. However the pendulum clocks then in use could not be relied on to provide an accuracy better than about 1/10 second, which was of the same order as that of the astronomical observations. It is doubtful if much use was made of even this limited accuracy outside the two observatories, and although there may – occasionally have been a demand for more accurate time, it was certainly not voiced.

The Role of VLBI in the Establishment of Coordinate Systems

1975 ◽  
Vol 26 ◽  
pp. 293-295 ◽  
Author(s):  
I. Zhongolovitch
Keyword(s):  
General Solution ◽  
Future Development ◽  
Rational Approach ◽  
Radio Telescopes ◽  
Coordinate Systems ◽  
Tectonic Plates ◽  
Astronomical Observations ◽  
Optical Instruments ◽  
Fundamental Polyhedron

Considering the future development and general solution of the problem under consideration and also the high precision attainable by astronomical observations, the following procedure may be the most rational approach:1. On the main tectonic plates of the Earth’s crust, powerful movable radio telescopes should be mounted at the same points where standard optical instruments are installed. There should be two stations separated by a distance of about 6 to 8000 kilometers on each plate. Thus, we obtain a fundamental polyhedron embracing the whole Earth with about 10 to 12 apexes, and with its sides represented by VLBI.

The Fine Structure of Phloem Cells

1985 ◽  
Vol 43 ◽  
pp. 632-635
Author(s):  
James Cronshaw
Keyword(s):  
Structural Studies ◽  
High Concentration ◽  
Long Distance ◽  
Phloem Tissue ◽  
Sieve Elements ◽  
Long Distance Transport ◽  
P Protein ◽  
Companion Cells ◽  
Electron Microscopical ◽  
Distance Transport

Long distance transport in plants takes place in phloem tissue which has characteristic cells, the sieve elements. At maturity these cells have sieve areas in their end walls with specialized perforations. They are associated with companion cells, parenchyma cells, and in some species, with transfer cells. The protoplast of the functioning sieve element contains a high concentration of sugar, and consequently a high hydrostatic pressure, which makes it extremely difficult to fix mature sieve elements for electron microscopical observation without the formation of surge artifacts. Despite many structural studies which have attempted to prevent surge artifacts, several features of mature sieve elements, such as the distribution of P-protein and the nature of the contents of the sieve area pores, remain controversial.

Popliteal entrapment syndrome and age

VASA ◽  
2012 ◽  
Vol 41 (4) ◽  
pp. 262-268 ◽  
Author(s):  
Schweizer ◽  
Hügli ◽  
Koella ◽  
Jeanneret
Keyword(s):  
Risk Factors ◽  
Leg Pain ◽  
Walking Distance ◽  
Therapeutic Approaches ◽  
Long Distance ◽  
Entrapment Syndrome ◽  
Long Distance Running ◽  
Popliteal Entrapment ◽  
Popliteal Entrapment Syndrome ◽  
Atherosclerotic Risk Factors

On the occasion of diagnosing a popliteal entrapment syndrome in a 59-year old man with no cardiovascular risk factors, who developed acute ischemic leg pain during long distance running, we give an overview on this entity with emphasis on patients’age. The different types of the popliteal artery compression syndrome are summarized. The diagnostic and therapeutic approaches are discussed. The most important clinical sign of a popliteal entrapment syndrome is the lack of atherosclerotic risk factors in patients with limited walking distance. Not only in young athletes but also in patients more than 50 years old the popliteal entrapment syndrome has to be taken into account.

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