Abstract: A method for global navigation satellite system (GNSS)-based navigation may include retrieving terrain data for a geographical region and satellite orbit data for a GNSS comprising a plurality of satellites. Then, for of a plurality of time steps in a time period and for each of a plurality of lateral positions in the geographic region, a minimum height at which each satellite is visible from the lateral position at the time step may be determined. Unique combinations of satellites visible from the lateral position at the time step may be identified and error objects indicating GNSS performance quality corresponding to the unique combination of satellites may be generated. Performance quality information may be produced based on the one or more unique combinations of satellites and the respective one or more error objects. At least one aircraft may be operated based on this performance quality information.

Abstract: A support and display assembly for a plurality of thin, relatively lightweight objects such as floppy disks or diskettes, wherein a support frame has a plurality of holder structures rotatably mounted therein and annularly pivotal between two oppositely disposed angularly oriented positions wherein each of the holders and any object contained therein is disposed in a spaced apart, parallel relation to one another when in either of the two opposite positions and further wherein a braking structure is provided to restrict the pivotal movement of the holder structure such that such holder structures will not "automatically" successively travel between the aforementioned opposite positions by a forced displacement of one of such holders.

Abstract: An assembly for holding a planting pot and supplying water or liquid thereto by capillary action from a liquid reservoir maintained in an outer container disposed in surrounding and supporting relation to the planting pot on the interior thereof. The assembly incorporates a capillary container holding transfer medium which facilitates liquid flow therethrough by capillary action, such as dirt or soil similar to the material on the interior of the planting pot in which the root structure of the contained plant grows.

Abstract: A support assembly for a conventionally structured planting pot designed to position and support the planting pot on the interior of an outer liquid containing container wherein the support assembly includes an adjustable support structure for maintaining any one of a variety of planting pots above an existing level of water or irrigating liquid within the container and a positioning structure both fixedly and adjustably disposed to properly position the supported plant pot in a centered location within the outer container.

Abstract: A holder assembly for the storage of a plurality of cassette-type casings of the type normally associated with audio or video cassettes or casings for compact disks wherein the holder assembly incorporates an ejector structure comprising a plurality of springs positionable into biasing engagement with the retained casings such that each of the casings may be independently and selectively positioned between a retained and stored position within the housing of the holder and an ejected position defined by the casing extending out of an open face of the housing for removal thereof. Selective disposition of each casing between the aforementioned positions is accomplished by applying proper force to an exposed surface portion of the casing itself in opposition to the biasing force exerted thereon by the ejector spring structure.

Abstract: A readily assembled self-locking photographic print display frame which consists of a substantially U-shaped base member in which the web has a pair of spaced aligned vertical slots and respectively spaced therebehind are a pair of vertical T-slots, upstanding from and removably secured in the pair of T-slots is a backing frame member and upstanding from the first pair of slots is a transparent face plate member having a pair of depending angled leg members such that when disposed into the first pair of slots causes the face plate member to be angled relative to the backing plate member and have a pressure engagement therewith to secure therebetween a photographic print.

Abstract: A tea kettle structure wherein the improvement consists of said tea kettle having an outer body portion having an inner body portion comprising an annular side wall and a bottom in spaced relation to the side wall and bottom of said outer body portion forming a chamber therebetween and a member directing the passage of water from the spout of said outer body portion into said chamber for relatively quicker heating than otherwise of said water therein, said inner body portion having a chamber therein to receive the overflow of water from said first mentioned chamber for use of the full capacity of said tea kettle as may be desired.