The ASEAN Center in Moscow and Its Gravitational Pull

2016 ◽  
Vol 62 (004) ◽  
pp. 29-38
Author(s):  
A. Torkunov
Keyword(s):  
Gravitational Pull

scholarly journals Error estimation on extracorporeal trajectory determination from body scans

2021 ◽  
Author(s):  
F. Riva ◽  
U. Buck ◽  
K. Buße ◽  
R. Hermsen ◽  
E. J. A. T. Mattijssen ◽  
...  
Keyword(s):  
Computed Tomography ◽  
Soft Tissue ◽  
Supine Position ◽  
Post Mortem ◽  
Surface Scanning ◽  
3D Data ◽  
Gravitational Pull ◽  
Scanned Images ◽  
Source Of Error ◽  
Trajectory Determination

AbstractThis study explores the magnitude of two sources of error that are introduced when extracorporeal bullet trajectories are based on post-mortem computed tomography (PMCT) and/or surface scanning of a body. The first source of error is caused by an altered gravitational pull on soft tissue, which is introduced when a body is scanned in another position than it had when hit. The second source of error is introduced when scanned images are translated into a virtual representation of the victim’s body. To study the combined magnitude of these errors, virtual shooting trajectories with known vertical angles through five “victims” (live test persons) were simulated. The positions of the simulated wounds on the bodies were marked, with the victims in upright positions. Next, the victims were scanned in supine position, using 3D surface scanning, similar to a body’s position when scanned during a PMCT. Seven experts, used to working with 3D data, were asked to determine the bullet trajectories based on the virtual representations of the bodies. The errors between the known and determined trajectories were analysed and discussed. The results of this study give a feel for the magnitude of the introduced errors and can be used to reconstruct actual shooting incidents using PMCT data.

scholarly journals I.—Secular Earth-Creep

1909 ◽  
Vol 6 (4) ◽  
pp. 145-148 ◽  
Author(s):  
E. H. L. Schwarz
Keyword(s):  
South Africa ◽  
Diurnal Variation ◽  
Royal Society ◽  
The Sun ◽  
Special Design ◽  
Important Paper ◽  
Preliminary Results ◽  
Gravitational Pull ◽  
Set Up ◽  
Horizontal Pendulum

Dr. J. R. Sutton has recently read a most important paper to the Royal Society of South Africa on the diurnal variation of level at Kimberley. The paper gave the preliminary results of observations made during the course of three years upon the variation of the level of the ground as recorded by a large horizontal pendulum of a special design made for the author by the Cambridge Instrument Company. It appeared from the results that the movements in the surface of the ground, which set up corresponding movements in the pendulum, were very great. The maximum westerly elongation of the extremity of the pendulum occurred about 5.30 a.m., the maximum easterly about 4.15 p.m., the medium positions a little before 11 a.m. and 9.30 p.m. Geometrically these movements may be represented on the hypothesis that the hemisphere facing the sun bulges out, forming a sort of meniscus to the geosphere. The rise and fall of the surface of the ground which such a supposition would postulate is enormous, and the very magnitude has led Dr. Sutton to hesitate in giving the figures. There can, however, be very little doubt that some rise and fall in the earth's surface is occasioned by the sun's gravitational pull, although the present figures may have to be lessened by taking into consideration other causes which contribute to the disturbance of the pendulum.

scholarly journals The Confined Atom: James Clerk Maxwell on the Fundamental Particles and the Limits of Scientific Knowledge

2021 ◽  
Vol 29 (2) ◽  
pp. 189-214
Author(s):  
Charis Charalampous
Keyword(s):  
Heat Conduction ◽  
Scientific Knowledge ◽  
Gas Diffusion ◽  
Mathematical Formalism ◽  
James Clerk Maxwell ◽  
Fundamental Particles ◽  
Free Particles ◽  
Gravitational Pull ◽  
Confined Atom

Abstract This paper distinguishes in Maxwell’s thought between “atomic molecules” and “ultimate atoms,” and arrives at a set of properties that characterize each type of atom. It concludes that Maxwell is a mathematical atomist, an approach that entails the notion that although it is impossible to observe the ultimate atoms as free particles, we can nevertheless study them as mathematical observables, on the caveat that mathematical formalism remains tied to phenomenalism and to theoretical interpretations of such phenomena as, for example, mass and force variations, gravitational pull, gas diffusion and viscosity, and heat conduction.

scholarly journals Aplicación de técnicas de SIG en la planificación del transporte en Extremadura (España)

Finisterra ◽  
2012 ◽  
Vol 38 (75) ◽  
Author(s):  
Julian Mora Aliseda ◽  
José Nogales Galán ◽  
José Gutierréz Gallego ◽  
Tomás Cortés Ruíz
Keyword(s):  
Information Systems ◽  
Geographical Information Systems ◽  
Road Transport ◽  
Geographical Information ◽  
Future Trends ◽  
Social Perspectives ◽  
Straight Line ◽  
Highway Transportation ◽  
Regional Community ◽  
Gravitational Pull

GIS IN ROAD TRANSPORT PLANNING IN EXTREMADURA (SPAIN). Increasingly more importance is given to the role played by infrastructures as an element that shapes the landscape. New highways modify conditions of access, which consequently influences potential regional development. In this sense, Geographical Information Systems (GIS) are suitable tools for the calculation of accessibility levels and the implementation of cartographical outputs and results. In the light of these premises, this work is aimed at designing a GIS transportation model in the Regional Community of Extremadura in order to make an inventory and to plan and analyse regional infrastructures from economic and social perspectives. It is also our aim to evaluate the effects derived from infrastructure changes on the landscape by considering the highway transportation systems.In this sense, the calculation of shorter pathways is of great importance in order to achieve realistic accessibility GIS models. These models need calculations of the distance between couples of objects. By means of the calculation of the shortest pathways, distances can be precisely measured through the network that monitors the movements instead of using straight-line distances. By using GIS, models can be created that allow us to predict future trends. In order to study the potential of the designed model, different indicators have been determined showing the communication levels in different areas of Extremadura. Indicators calculated for the different population centres and areas are accessibility in absolute and relative terms, times of minimum access and the gravitational pull in comparison with the most significant populated areas. Maps are then generated with the results obtained from each of the indicators.

scholarly journals Looking towards the detection of exoearths with SuperWASP

2006 ◽  
Vol 5 (3) ◽  
pp. 183-186
Author(s):  
R.A. Street ◽  
D.J. Christian ◽  
W.I. Clarkson ◽  
A.C. Cameron ◽  
B. Enoch ◽  
...  
Keyword(s):  
South African ◽  
Field Survey ◽  
Astronomical Observatory ◽  
Wide Field ◽  
La Palma ◽  
Automated Algorithm ◽  
First Results ◽  
Gravitational Pull ◽  
Low Amplitude ◽  
Host Stars

The WASP consortium is conducting an ultra-wide field survey of stars between 8–15 mag from both hemispheres. Our primary science goal is to detect extra-solar ‘hot-Jupiter’-type planets that eclipse (or transit) bright host stars and for which further detailed investigation will be possible. We summarize the design of the SuperWASP instruments and describe the first results from our northern station SW-N, sited in La Palma, Canary Islands. Our second station, which began operations this year, is located at the South African Astronomical Observatory. Between April and September, 2004, SW-N continuously observed ~6.7 million stars. The consortium's custom-written, fully automated data reduction pipeline has been used to process these data, and the information is now stored in the project archive, held by the Leicester database and archive service (LEDAS). We have applied a sophisticated, automated algorithm to identify the low-amplitude (~0.01 mag), brief (~few hours) signatures of transiting exoplanets. In addition, we have assessed each candidate in the light of all available catalogue information in order to reject data artefacts and astrophysical false positive detections. The highest priority candidates are currently being subjected to further observations in order to select the true planets. Once the exoplanets are confirmed, a host of exciting opportunities are open to us. In this paper, we describe two techniques that exploit the transits in order to detect other objects within the same system. The first involves determining precise epochs for a sequence of transit events in order to detect the small timing variations caused by the gravitational pull of other planets in the same system. The second method employs ultra-high precision photometry of the transits to detect the deviations caused by the presence of exoplanetary moons. Both of these techniques are capable of detecting objects the size of terrestrial planets.

Rome’s orbit

2018 ◽  
pp. 59-87
Author(s):  
Kriston R. Rennie
Keyword(s):  
Middle Ages ◽  
Religious Life ◽  
Early Medieval ◽  
Early Middle Ages ◽  
Gravitational Pull

A monastery’s relationship with Rome raises fundamental questions about its origins and nature. Exemption privileges form an important part of this story – a connecting link between the centre in Rome and the Christian periphery. This chapter questions the monastery’s impetus for seeking special exemption from Rome by examining the practice’s development from the papal perspective. It seeks to understand the gravitational pull of ‘Rome’s orbit’, which reveals the precedent, pragmatism, and vision of early medieval popes in the organization and governance of religious life. Formulating the popes’ attitude towards, and involvement in, western monasteries, this chapter explains why the granting of monastic exemptions became so pronounced a feature of papal government in the early Middle Ages.

3. The Moon’s influence on us

2015 ◽  
pp. 46-59
Author(s):  
David A. Rothery
Keyword(s):  
Human Behaviour ◽  
Day Length ◽  
The Moon ◽  
Ocean Water ◽  
Ocean Tides ◽  
Human Culture ◽  
The Future ◽  
Solar Tide ◽  
Gravitational Pull ◽  
Length Changes

The Moon’s presence in the sky has long pervaded human culture in many ways. ‘The Moon’s influence on us’ considers the influence on timekeeping and how the orbits of the Moon and Earth are the origin of our calendar. Ocean tides are caused by the gravitational pull of the Moon and Sun on ocean water with the Moon’s influence being twice as strong as the solar tide. The elliptical nature of the Moon’s orbit affects lunar and solar eclipses; these are explained along with orbital recession and day-length changes. The Moon’s influence on human behaviour and wildlife is also considered, along with the potential of a more sustained lunar presence in the future.

Stories of a Certain Gravity

2021 ◽  
pp. 11-35
Author(s):  
Gianfranco Bertone
Keyword(s):  
General Relativity ◽  
Short Stories ◽  
Amniotic Fluid ◽  
Gravitational Waves ◽  
Human Condition ◽  
Universal Gravitation ◽  
History Of ◽  
Gravitational Pull ◽  
The Moment ◽  
Fundamental Forces

Before delving into gravitational waves, I illustrate, with nine short stories, the fascinating history of gravity, shedding light on the actual lives and contributions of leading scientists and astronomers, from Tycho Brahe’s adventurous life and grotesque death, to Johannes Kepler’s intuitions and passionate prose. And from Newton’s resolution to cut the Gordian knot of the origin of gravity with his theory of universal gravitation, to Einstein’s heroic struggle to derive the equations of general relativity. Gravity is the weakest of the fundamental forces in nature, yet it subjugates us from the moment we are born. After nine months floating in the womb, suspended in the enveloping heat of the amniotic fluid, we are suddenly confronted with the gravitational pull of our planet. Gravity thus manifests itself as weight, and forces our helpless bodies to the ground, establishing a universal and defining aspect of the human condition.

Negotiating Underwater Space: The Sensorium, the Body and the Practice of Scuba-diving

2011 ◽  
Vol 11 (3) ◽  
pp. 215-234 ◽  
Author(s):  
Stephanie Merchant
Keyword(s):  
Lived Experiences ◽  
Visual Cues ◽  
Scuba Diving ◽  
Verbal Communication ◽  
The Body ◽  
The Everyday ◽  
Gravitational Pull ◽  
Ways Of Being ◽  
And Training ◽  
Shed Light

The desire to escape from land-based bodily constraints, to become enchanted by the spectacle of technicolour reefs, sunken ships and otherworldly creatures, is growing in popularity despite the expense and training required to explore the ocean depths. This dense water world, where a person’s resistance to gravitational pull results in differing feelings of weightlessness, where sound travels about five times faster yet more unevenly than in air, and where verbal communication is impractical such that visual cues are necessary, calls for a different ‘way of being’ to the everyday spaces of the home or the workplace. It is these different ways of being and feeling that I explore in this paper. To do this I present a sensual phenomenology that pays particular attention to the reorganization of the sensoria of a group of novice divers as they start to gain an awareness of the different perceptual means by which they move through and sense underwater space. The paper concludes by highlighting that phenomenological accounts of tourist space can shed light on the intricacies of tourists’ lived experiences, which in turn could prove useful in the structure and organization of tourist activities.

Sign in / Sign up

Export Citation Format

Share Document