Observation of Hyperfine Transitions in Trapped Ground-State Antihydrogen

This paper discusses the first observation of stimulated magnetic resonance transitions between the hyperfine levels of trapped ground state atomic antihydrogen, confirming its presence in the ALPHA apparatus. Our observations show that these transitions are consistent with the values in hydrogen to within 4~parts~in~$10^3$. Simulations of the trapped antiatoms in a microwave field are consistent with our measurements

Method and apparatus for telemetry adaptive bandwidth compression

Methods and apparatus are provided for automatic and/or manual adaptive bandwidth compression of telemetry. An adaptive sampler samples a video signal from a scanning sensor and generates a sequence of sampled fields. Each field and range rate information from the sensor are hence sequentially transmitted to and stored in a multiple and adaptive field storage means. The field storage means then, in response to an automatic or manual control signal, transfers the stored sampled field signals to a video monitor in a form for sequential or simultaneous display of a desired number of stored signal fields. The sampling ratio of the adaptive sample, the relative proportion of available communication bandwidth allocated respectively to transmitted data and video information, and the number of fields simultaneously displayed are manually or automatically selectively adjustable in functional relationship to each other and detected range rate. In one embodiment, when relatively little or no scene motion is detected, the control signal maximizes sampling ratio and causes simultaneous display of all stored fields, thus maximizing resolution and bandwidth available for data transmission. When increased scene motion is detected, the control signal is adjusted accordingly to cause display of fewer fields. If greater resolution is desired, the control signal is adjusted to increase the sampling ratio

Trade Policies and Export growth - employment and poverty impact in Tanzania

This report focuses on trade and exchange rate policies in Tanzania. The composition of Tanzanian exports has changed dramatically since early 2000. In examining the determinants of trade with a particular focus on Tanzanian exports, we found that changes in the real exchange rate did not have a significant impact on exports. However, supply-side effects and trading partner economic performance are more important, as is the distance to market (or transport cost). The second part of this report discusses the impact of trade reforms on employment and poverty in the Tanzanian economy. In the long-term scenarios poorer households seem to gain more from trade liberalisation compared to the richer household groups. In the short-term, trade liberalisation would be beneficial to female workers and poor households, if labour is able to move between sectors. If wages are rigid, trade liberalisation will lead to unemployment and wages for casual labour will drop significantly. A nominal wage increase during liberalisation can have a significant impact on unemployment, driving casual workers’ wages down further. If the trade union adjusts worker premiums during trade reform, this would not only save some of the jobs of members, but also benefit non-unionised workers in other sectors as well. The alternative option of a reduction in export taxes would have a stronger impact on export supply, poor households would gain more than with liberalisation..Trade liberalisation; labour markets; poverty; Tanzania

Role of social organizers in assisting farmer-managed irrigation systems: Proceedings of a regional workshop of the Farmer-Managed Irrigation Systems Network held at Khon Kaen, Thailand from 15-20 May 1989

Farmer managed irrigation systemsRural sociologySocial participationOrganizations

Range and range rate system

A video controlled solid state range finding system which requires no radar, high power laser, or sophisticated laser target is disclosed. The effective range of the system is from 1 to about 200 ft. The system includes an opto-electric camera such as a lens CCD array device. A helium neon laser produces a source beam of coherent light which is applied to a beam splitter. The beam splitter applies a reference beam to the camera and produces an outgoing beam applied to a first angularly variable reflector which directs the outgoing beam to the distant object. An incoming beam is reflected from the object to a second angularly variable reflector which reflects the incoming beam to the opto-electric camera via the beam splitter. The first reflector and the second reflector are configured so that the distance travelled by the outgoing beam from the beam splitter and the first reflector is the same as the distance travelled by the incoming beam from the second reflector to the beam splitter. The reference beam produces a reference signal in the geometric center of the camera. The incoming beam produces an object signal at the camera

Supporting Dynamic Languages on the Java Virtual Machine

In this note, I propose two extensions to the Java virtual machine (or VM) to allow dynamic languages such as Dylan, Scheme and Smalltalk to be efficiently implemented on the VM. These extensions do not affect the performance of pure Java programs on the machine. The first extension allows for efficient encoding of dynamic data; the second allows for efficient encoding of language-specific computational elements