A Case Study of Applied Co-Design in 3D Virtual Space for Facilitating Bicycle Use on Light Rail Systems

Cycling is highly recommended by experts concerned with environmental and public health. Cycling does not produce CO2 emissions, can be economical, and can improve physical fitness. However, the barriers to cycling remain significant to many. Combined with a light rail system the bicycle offers a compelling alternative to automobiles; yet, bicycles are denied access on certain rail systems because they can take too much space away from pedestrians who share the light rail interior. To help solve this problem, Co-Design in 3D virtual space is proposed as an effective means of creating an innovative design solution. The digital questionnaires and virtual 3D modeling research/design method used in this study gives the participant the ability to offer insights and express ideas through digital means and in 3D virtual space. This method, Co-Design in Virtual Space (CoDeViS), was developed by the author. CoDeViS methods are an outgrowth of physical co-design methods such as 2D collages and 3D Velcro modeling, developed by those featured in The International Journal of CoCreation in Design and the Arts. Physical 3D methods have been widely accepted in the new product development industry as effective ways to involve people outside a design team in the research and design process. CoDeViS methods offer promise to those seeking to make the principles of co-design available to larger groups of people in discrete locations around the world at lower cost. Historical developments, current technology, and the abilities of everyday people make CoDeViS possible.</p

The transportation of Narain Sing: punishment, honour and identity from the Anglo–Sikh Wars to the Great Revolt

This paper examines fragments from the life of Narain Sing as a means of exploring punishment, labour, society and social transformation in the aftermath of the Anglo–Sikh Wars (1845–1846, 1848–1849). Narain Sing was a famous military general who the British convicted of treason and sentenced to transportation overseas after the annexation of the Panjab in 1849. He was shipped as a convict to one of the East India Company's penal settlements in Burma where, in 1861, he was appointed head police constable of Moulmein. Narain Sing's experiences of military service, conviction, transportation and penal work give us a unique insight into questions of loyalty, treachery, honour, masculinity and status. When his life history is placed within the broader context of continuing agitation against the expansion of British authority in the Panjab, we also glimpse something of the changing nature of identity and the development of Anglo–Sikh relations more broadly between the wars of the 1840s and the Great Indian Revolt of 1857–1858

Technologies for aerobraking

Aerobraking is one of the largest contributors to making both lunar and Mars missions affordable. The use of aerobraking/aeroassist over all propulsive approaches saves as much as 60 percent of the initial mass required in low earth orbit (LEO); thus, the number and size of earth to orbit launch vehicles is reduced. Lunar transfer vehicles (LTV), which will be used to transport personnel and materials from LEO to lunar outpost, will aerobrake into earth's atmosphere at approximately 11 km/sec on return from the lunar surface. Current plans for both manned and robotic missions to Mars use aerocapture during arrival at Mars and at return to Earth. At Mars, the entry velocities will range from about 6 to 9.5 km/sec, and at Earth the return velocity will be about 12.5 to 14 km/sec. These entry velocities depend on trajectories, flight dates, and mission scenarios and bound the range of velocities required for the current studies. In order to successfully design aerobrakes to withstand the aerodynamic forces and heating associated with these entry velocities, as well as to make them efficient, several critical technologies must be developed. These are vehicle concepts and configurations, aerothermodynamics, thermal protection system materials, and guidance, navigation, and control systems. The status of each of these technologies are described, and what must be accomplished in each area to meet the requirements of the Space Exploration Initiative is outlined

GRAVITATION, FORCE, AND TIME

Gravitation is described as a uniquely geometric phenomenon, incompatible with the concept of force, and only analogically comparable with force by means of mathematical formalisms. Two thought experiments are employed to demonstrate that the association of gravitation with force is irreconcilable with the geometric interpretation, and without theoretical foundation or empirical support. Motion in time is identified as the dynamic source of what has been attributed as the energetic component of gravitational phenomena

TIME AS THE DYNAMIC ASPECT OF THE CONTINUUM

The Minkowski diagram, by which the concept of spacetime has been graphically represented and interpreted, is shown to have a pre-relativistic flaw: It depicts the relative motion of a body moving in time as-if it is moving along with the observer’s clock, not as it is actually observed, according to its own proper time. An alternative diagram provides an accurate representation of relativistic relationships and enables heuristic insights into the nature of relativistic effects, and of time, light, and gravitation

The “Twin Paradox” Resolved

The so-called “Twin Paradox”, wherein a relativistic effect is hypothesized to produce verifiably different clock rates between bodies, has not been resolved to the satisfaction of many theorists. There has been an abiding difficulty with determining how arbitrary periods of uniform motion, when both twins will observe the other’s clock to move more slowly, can be resolved upon their reunion. Spacetime diagrams are used here to demonstrate visually and mathematically that there is a nonparadoxical explanation for the supposed discrepancy that has not been previously proposed

Baryon Number Violating Transitions in String Backgrounds

We construct field configurations that interpolate between string background states of differing baryon number. Using these configurations we estimate the effect of the background fields on the energy barrier separating different vacua. In the background of a superconducting GUT string the energy barrier is increased, while in an electroweak string background or the electroweak layer of a non-superconducting string the energy barrier is reduced. The energy barrier depends sensitively on both the background gauge and scalar fields.Comment: 27 pages. Texing problems fixe