On a new great theodolite to be used on the great trigonometrical survey of india, with a short note on the performance of a zenith-sector employed on the same work

1872 ◽  
Vol 20 (130-138) ◽  
pp. 372-374
Keyword(s):  
Short Note ◽  
Vertical Axis ◽  
Spare Parts ◽  
Total Weight ◽  
Vertical Circle ◽  
Horizontal Circle

Since my paper with the above title was read, it has occurred to me that some particulars as to the weight of the instrument might interest those engaged practically in Geodesical work. The following are the weights of the main parts as separated for carriage:— (1) Stand , with Levelling-apparatus complete ..... 108 (2) Iron Circle of Stand with 3 Centering-Screws ... 156 (3) Tribrach , with Horizontal Circle, Guard ditto, Vertical Axis, and Relieving-apparatus ....... 180 (4) Vertical-Axis Socket , with 5 Horizontal-Microscope arms, Elliptical Table, Pillars, 2 Azimuthal Levels, 2 Vertical ditto, 2 Vertical Microscopes, 2 Pointer ditto, Horizontal Tangent-Screw plates ........ 235 (5) Telescope , with Vertical Circle ........... 64 (6) Miscellaneous appliances and spare parts (about) ........ 130 Weight of Instrument ............................................ 873 (7) Aggregate weight of field packing-cases, assumed at 2/3 the weight of contents ... 582 Total weight of Instrument in field-cases ...................... 1455

I. On a new great theodolite to be used on the great trigo­nometrical survey of India, with a short note on the performance of a zenith-sector employed on the same work

1872 ◽  
Vol 20 (130-138) ◽  
pp. 317-328 ◽  
Keyword(s):  
Royal Society ◽  
Short Note ◽  
Secretary Of State ◽  
Astronomical Instruments ◽  
Horizontal Circle ◽  
Under Construction

On the 28th of February, 1867, I had the honour of submitting to the inspection of the Royal Society a Transit-Instrument and a Zenith-Sector made for the Great Trigonometrical Survey of India, to be used re­spectively for the determination of longitude and latitude on that work. These were one instalment of the following list of geodesical and astronomical instruments which the Secretary of State for India deputed me to design and superintend under construction :— One Great Theodolite,with a 3-feet Horizontal Circle. By Messrs, Troughton and Simms. Two Zenith-Sectors. By Messrs. Troughton and Simms. Two 5- feet Transit-Instruments. By Messrs. T. Cooke and Sons, York.

scholarly journals Lissajous-toric knots

2020 ◽  
Vol 29 (01) ◽  
pp. 2050003
Author(s):  
Marc Soret ◽  
Marina Ville
Keyword(s):  
Upper Bound ◽  
Representation Formula ◽  
Vertical Axis ◽  
Torus Knots ◽  
Torus Knot ◽  
Vertical Circle

A point in the [Formula: see text]-torus knot in [Formula: see text] goes [Formula: see text] times along a vertical circle while this circle rotates [Formula: see text] times around the vertical axis. In the Lissajous-toric knot [Formula: see text], the point goes along a vertical Lissajous curve (parametrized by [Formula: see text] while this curve rotates [Formula: see text] times around the vertical axis. Such a knot has a natural braid representation [Formula: see text] which we investigate here. If [Formula: see text], [Formula: see text] is ribbon; if [Formula: see text], [Formula: see text] is the [Formula: see text]th power of a braid which closes in a ribbon knot. We give an upper bound for the [Formula: see text]-genus of [Formula: see text] in the spirit of the genus of torus knots; we also give examples of [Formula: see text]’s which are trivial knots.

scholarly journals Effect of grater position on the size of grated sago (Metroxylon spp.)

Food Research ◽  
2018 ◽  
Vol 2 (6) ◽  
pp. 572-577
Author(s):  
Wan Mohd Fariz W.A. ◽  
Rosnah S. ◽  
Azman H. ◽  
Mohd Shahrir A. ◽  
Saiful Azwan A. ◽  
...  
Keyword(s):  
Size Distribution ◽  
Outer Layer ◽  
Fiber Orientation ◽  
Vertical Axis ◽  
Total Weight ◽  
Sago Starch ◽  
Sago Palm

The natural arrangement of sago palm’s fiber orientation is parallel to the vertical axis of the trunk. Extraction of the sago starch requires breaking of the trunk into fine sizes. The sago size is affected by the grater position which affects the of starch recovery. This study was conducted to evaluate grating efficiency through sago size produced at the different direction of grating (0° and 90° to roller teeth rotation). Sago palm trunks without outer layer were cut into square blocks of 100 mm3 . Each trunk block was placed on roller grater platform at a different position where the cutting spike was parallel to the vertical axis of sago trunk fiber orientation (grating at 0° direction) and perpendicular (grating at 90° direction). 100 g of dry grated sago was sifted to determine the size distribution with different sieve sizes i.e. 2.80 mm, 2.00 mm, 1.00 mm, 0.85 mm and 0.425 mm. A total weight of 1 kg of grated sago was mixed with water and squeezed to be extracted. The starch recovery produced by the grating process at 0° directionswas 10.30% higher than 900 directions. The present study showed that the direction of grating at 0° was able to produce finer grated sago with maximum starch recovery.

scholarly journals Automation and Software of the Wanschaff Vertical Circle at Goloseevo

1986 ◽  
Vol 109 ◽  
pp. 463-464
Author(s):  
A.S. Kharin ◽  
L.A. Kukharskij ◽  
P.F. Lazorenko ◽  
N.F. Minyajlo ◽  
M.L. Tsesis
Keyword(s):  
Vertical Axis ◽  
Automatic Machine ◽  
The Other ◽  
Vertical Circle ◽  
Other Information ◽  
Set Up

The Wanschaff vertical circle, set up at Goloseevo in 1949 was built in 1914. The instrument was originally equiped with four visual microscopes for reading the circle, with a visual eyepiece micrometer, and with two levels for the determination of the inclination of the vertical axis. After the instrument had been installed in a new pavilion in 1972, the visual microscopes were replaced by photographic devices, and a semi-automatic machine for measuring the circle readings with output on punched tape was developed. In 1973,the eyepiece micrometer was equiped with a precision potentiometer of the type which together with an automatic voltmeter of the type the digitizer micrometer readings punches them on tape. The other information is punched on cards by the operator at the data desk.

Fundamental observations made at Breslau in 1922-1925

1978 ◽  
Vol 48 ◽  
pp. 433-435
Author(s):  
F. Schmeidler
Keyword(s):  
The Sun ◽  
Vertical Circle ◽  
Right Ascension

Meridian observations of fundamental stars were made at Breslau Observatory in 1922 to 1925. The observations in right ascension were made by W.Rabe with the 6-inch transit instrument, whereas the declinations were observed by A.Wilkens with the vertical circle. In both coordinates, observations of the Sun were also made.

Spatial Representations as an Emergent Feature of Perceptual Processing

2010 ◽  
Vol 24 (3) ◽  
pp. 161-172 ◽  
Author(s):  
Edmund Wascher ◽  
C. Beste
Keyword(s):  
Common Ground ◽  
Event Related Potentials ◽  
Vertical Axis ◽  
Relevant Information ◽  
Sources Of Information ◽  
Integrated Network ◽  
Perceptual Maps ◽  
Emergent Feature ◽  
Related Potentials ◽  
Selection Of

Spatial selection of relevant information has been proposed to reflect an emergent feature of stimulus processing within an integrated network of perceptual areas. Stimulus-based and intention-based sources of information might converge in a common stage when spatial maps are generated. This approach appears to be inconsistent with the assumption of distinct mechanisms for stimulus-driven and top-down controlled attention. In two experiments, the common ground of stimulus-driven and intention-based attention was tested by means of event-related potentials (ERPs) in the human EEG. In both experiments, the processing of a single transient was compared to the selection of a physically comparable stimulus among distractors. While single transients evoked a spatially sensitive N1, the extraction of relevant information out of a more complex display was reflected in an N2pc. The high similarity of the spatial portion of these two components (Experiment 1), and the replication of this finding for the vertical axis (Experiment 2) indicate that these two ERP components might both reflect the spatial representation of relevant information as derived from the organization of perceptual maps, just at different points in time.

Introduction

2018 ◽  
Author(s):  
Peter Hopkins
Keyword(s):  
Final Section ◽  
Short Note ◽  
Current Situation ◽  
Research Projects ◽  
Everyday Lives ◽  
Early Settlement ◽  
The Everyday ◽  
Initial Research

The chapters in this collection explore the everyday lives, experiences, practices and attitudes of Muslims in Scotland. In order to set the context for these chapters, in this introduction I explore the early settlement of Muslims in Scotland and discuss some of the initial research projects that charted the settlement of Asians and Pakistanis in Scotland’s main cities. I then discuss the current situation for Muslims in Scotland through data from the 2011 Scottish Census. Following a short note about the significance of the Scottish context, in the final section, the main themes and issues that have been explored in research about Muslims in Scotland.

Calculating the aerodynamics of vertical axis wind turbines

2012 ◽  
Vol 34 (3) ◽  
pp. 169-184 ◽  
Author(s):  
Hoang Thi Bich Ngoc
Keyword(s):  
Wind Turbine ◽  
Incidence Angle ◽  
Vertical Axis ◽  
Rotor Blades ◽  
Vertical Axis Wind Turbine ◽  
Horizontal Axis Wind Turbine ◽  
Velocity Triangle ◽  
Relationship Of ◽  
The Relationship

Vertical axis wind turbine technology has been applied last years, very long after horizontal axis wind turbine technology. Aerodynamic problems of vertical axis wind machines are discussible. An important problem is the determination of the incidence law in the interaction between wind and rotor blades. The focus of the work is to establish equations of the incidence depending on the blade azimuth, and to solve them. From these results, aerodynamic torques and power can be calculated. The incidence angle is a parameter of velocity triangle, and both the factors depend not only on the blade azimuth but also on the ratio of rotational speed and horizontal speed. The built computational program allows theoretically selecting the relationship of geometric parameters of wind turbine in accordance with requirements on power, wind speed and installation conditions.

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