Abstract The production of the artificial 51 Cr neutrino source with activity > 3 MCi for experiment BEST is presented. This procedure consisted making a 50 target and irradiating it thermal neutrons in nuclear reactor SM-3. form disks thickness 4 mm diameter 84 88 included enrichment (to 96.5% Cr) natural chromium oxyfluoride by gas centrifugation, electrolytic reduction refining metallic c...

This paper formulates the 3D Container ship Loading Planning Problem (3D CLPP) and also proposes a new and compact representation to efficiently solve it. Containers on board a Container ship are placed in vertical stacks, located in different sections. The only way to access the containers is through the top of the stack. In order to unload a container at a given port j, it is necessary to rem...

A spot that flickers at 16 Hz between two luminance levels (on a grey surround) has an appearance of metallic lustre, which we call 'monocular lustre'. Binocular and monocular lustre were measured in comparable conditions by a rating procedure, and both were reported only when the light and dark values of the flickering (or binocularly fused) spot straddled the surround luminance, so that the s...

A positive response from a metal detector when run over an area of the body is a strong positive indicator of the presence of a metallic object. If there is a possibility of a buried metallic foreign body this positive finding should not be ignored.

In an Euclidean d-space, the container problem asks to pack n equally sized spheres into a minimal dilate of a fixed container. If the container is a smooth convex body and d ≥ 2 we show that solutions to the container problem can not have a “simple structure” for large n. By this we in particular find that there exist arbitrary small r > 0, such that packings in a smooth, 3-dimensional convex ...

This paper focuses on a fleet management problem that arises in container trucking industry. From the container transportation company perspective, the present and future operating costs to minimize can be divided in three components: the routing costs, the resource (i.e., driver and truck) assignment costs and the container repositioning costs (i.e., the costs of restoring a given container fl...

The last decade has seen tremendous investments in new container ports, vessels, and linked onshore transportation systems. Due to the high level of customer service requested and the complexity of logistic processes in seaport container terminals, many terminal operators have attempted to improve the performance of their terminals by applying new technologies including automated equipment, adv...

Most container terminals are still using a bar code system for gate passage of trucks and containers, and also using paper documents (slip) for the delivery of the information on storage location of container in a yard. For this reason, most trucks have to stop at the gate of the container terminals in order to perform several basic jobs. To enhance the productivity of gate management, this stu...

In the process of decommissioning contaminated facilities, and in the conduct of normal operations involving radioactive material, it is frequently required to measure radioactivity in large containers such as 200 liter drums. For solid material, it is quite unusual for the radioactivity to be homogeneously distributed throughout the container. One way to derive the concentration of radioactivi...