Abstract: An electromagnetic structure is fabricated by additive manufacturing having at least one channel traversing the structure. In one embodiment, at least one form contains apertures and/or holes forming the channel and a liquid metal traverses the structure by the channel. Electrodes are provided to apply or extract electrical voltage or power to and/or from the liquid metal as well as a mechanism for propelling a portion of the liquid metal through the form. In an alternative embodiment, both the electrically insulating and the electrically conductive materials are solid and the channel is used for conducting a coolant instead of the liquid metal.

Abstract: An information-theoretic method clusters and merges bi-variate normal data or ‘error ellipses’ lying in a plane. Two or more error ellipses are clustered and then merged into a single error ellipse if the information lost in the merging process is sufficiently small. This criterion is numerically implemented and tested in a code developed for this purpose.

Abstract: A network-enabled method and system for polling individuals about attributes of features that may be present on an image is provided. The system enables a user to indicate a region-of-interest, or to otherwise graphically indicate the location and extent of a feature, on an image. Information relating to the user's choice of location of the feature then appears in a dynamic questionnaire, thus permitting the user to efficiently describe the attributes of each feature, while recording the location and extent of the feature that the user is describing. The content of the user's responses to the questionnaire, and the record of location and extent of the features that the user has referenced, are transmitted to a server for recording and later analysis.

Abstract: A handheld gamma camera or PET system with a disposable detector head is provided. This system includes a configuration of a gamma camera or PET scanner in which optical fibers or bundles of optical fibers are coupled to a scintillator or array of scintillators and the other end of the optical fibers or bundles of optical fibers are coupled to a light-sensitive camera, such as a photomultiplier. The system may further include a mechanism to rapidly couple and/or decouple the optical fiber or fibers from the light sensitive camera or from the scintillator or array of scintillators so that the detector can be disposed of or sterilized without damaging the light-sensitive camera. A method for image reconstruction and image simulation is also provided. The method includes an application of deterministic sampling using Gaussian quadrature parameters to construct a transition matrix for purposes of image reconstruction.

Abstract: An information-theoretic method clusters and merges bi-variate normal data or ‘error ellipses’ lying in a plane. Two or more error ellipses are clustered and then merged into a single error ellipse if the information lost in the merging process is sufficiently small. This criterion is numerically implemented and tested in a code developed for this purpose.

Abstract: A method for clustering large datasets in which a number N of data instances with a number n fields is linearly weighted to an n-dimensional mesh with (for example) m grid points per dimension, a number of “intelligent agents” is placed randomly on the mesh. These agents move along the grid according to special rules that cause them to find grid points that have the largest weight. All clusters can be determined in this fashion and the clusters can be ranked in “strength”, these maxima are then used as the “centroid” of each cluster. If desired, the mesh can be gridded finer around these “centroids” to obtain finer scaling, and all data points within a certain specified distance of these centroids are considered to form a cluster.

Abstract: A method and computer program product are described that allow accurate and extremely fast pricing of financial derivatives, such as options or futures. The method and computer program have accuracy and speed advantages over Monte-Carlo simulations. Other applications of the method include valuations of mortgage-backed securities, exchange rates, and insurance and credit risk valuations.

Abstract: A handheld gamma camera or PET system with a disposable detector head is provided. This system includes a configuration of a gamma camera or PET scanner in which optical fibers or bundles of optical fibers are coupled to a scintillator or array of scintillators and the other end of the optical fibers or bundles of optical fibers are coupled to a light-sensitive camera, such as a photomultiplier. The system may further include a mechanism to rapidly couple and/or decouple the optical fiber or fibers from the light sensitive camera or from the scintillator or array of scintillators so that the detector can be disposed of or sterilized without damaging the light-sensitive camera. A method for image reconstruction and image simulation is also provided. The method includes an application of deterministic sampling using Gaussian quadrature parameters to construct a transition matrix for purposes of image reconstruction.

Abstract: This invention consists of a coating applied to the metal surface which reduces the field emission levels of the surface. This coating could also decrease the secondary electron coefficient of the surface. The preferred embodiment described below is a hybrid coating consisting of two layers. However, a single-layer coating may also be used so long as it decreases field emission. Likewise, any number of coating layers may be used, so long as the resultant coating reduces field emission. The coating may also alter the properties of the interface between the metal surface and any macroparticle debris, in order to reduce field emission levels, but this is not essential, so long as the field emission from the surface is reduced. The invention is a coating which is not harmful to dc and rf vacuum system components, as for example, coatings which contain halogen atoms, such as CaF [J. N. Smith, Jr., J. Appl. Phys. 59, 283 (1986)].