Abstract: Disclosed are a system and method for providing wireless access to a network, such as the internet. The disclosed technique takes into account the inherent asymmetric and bursty characteristics of internet communication to obtain more efficiency in the communication between a user and an access provider. In doing so, the invention provides a technique that can be used to economically provide wireless access to the internet at data rates that are comparable to what a user would receive over ISDN lines.

Abstract: A method and apparatus for assessing the quality of a seed lot utilizes image analysis equipment to generate an indication of seed quality. In one method, the quality of the seed lot may be determined by generating an image of a plurality of seedlings grown from a plurality of seeds selected from the seed lot, determining the leaf surface area of each of the seedlings from the image, determining the total leaf surface area of the seedlings from the image, determining a surface area threshold relating to the leaf surface areas of a plurality of the seedlings, determining the proportion of the seedlings which have a leaf surface area that exceeds the surface area threshold, and generating an indication of seed quality based upon that proportion.

Abstract: A multi-configurable HSTL/LVCMOS/Open-Drain output driver circuit includes push-pull and open-drain transistors that are selectively enabled/disabled depending upon the desired mode of operation.

Abstract: A method and apparatus for assessing the quality of a seed lot utilizes image analysis equipment to generate an indication of seed quality. In one method, the quality of the seed lot may be determined by generating an image of a plurality of seedlings grown from a plurality of seeds selected from the seed lot, determining the leaf surface area of each of the seedlings from the image, determining the total leaf surface area of the seedlings from the image, determining a surface area threshold relating to the leaf surface areas of a plurality of the seedlings, determining the proportion of the seedlings which have a leaf surface area that exceeds the surface area threshold, and generating an indication of seed quality based upon that proportion.

Abstract: A cascode logic circuit provides a pair of differential output nodes that are pulled up by a pair of cross-coupled P-channel output transistors. The output nodes are connected to outputs of an N-channel combinatorial network that receives a differential input and functions to connect one of the output nodes to a positive supply and the other to ground, depending upon the differential input, thus providing a push-pull effect. The output nodes may be connected to the differential output of the combinatorial network by source-drain paths of separate N-channel transistors, with the gates of these transistors connected to the positive supply to capacitively isolate the output nodes from the combinatorial network; alternatively, the gates of these transistors may be clocked. A fully static latch is provided by adding cross-coupled N-channel transistors connecting the output nodes to ground, so the low side of the output is held down instead of being allowed to float.

Abstract: Amide and ester derivatives of substituted-4(1H)-oxocinnoline-3-carboxylic acids have antibacterial activity and are useful for inhibiting the growth of disease causing bacteria.

Abstract: VLB, 4'-deoxyleurosidine, leurosine and related 1-methyl vinca dimers are oxidized to vincristine-type compounds in tetrahydrofuran solution employing an aqueous chromate-sulfuric acid solution.

Abstract: A combustion air system for fireplaces capable of introducing outside air to the firebox of a fireplace in a position for efficient distribution within the firebox. The system includes both manual and thermostatic operation for controlling the quantity of combustion air reaching the firebox. The system employs the existing ash trap as the source of combustion air thereby allowing the installation of this improved combustion air system without structural modification of the firebox and without interference with the normal use of the ash trap. The system includes a domed chamber which is substituted for the ash trap door and a draft controlling damper for controlling the quantity of combustion air. The damper is controlled by a manual push rod extending from the exterior of the fireplace to the firebox and engages the same damper.

Abstract: Bridged vinca dimers in which two indole-dihydro-indole C-3 carboxamides are linked through the nitrogen atom of a carboxamide group, useful as oncolytic agents.

Abstract: C-3 Carboxamides of leurosine, leuroformine, 4-desacetylleurosine and 4-desacetylleuroformine, useful as antitumor agents.

Abstract: 5'-Hydroxyleurosine, 5'-hydroxyleuroformine and related compounds, useful in inhibiting the growth of experimental tumors.

Abstract: 5'-Hydroxyleurosine, 5'-hydroxyleuoformine and related compounds, useful in inhibiting the growth of experimental tumors.

Abstract: An automatic buttonholing device which uses a specially modified presser foot into which electrical contacts are inserted for actuating an electromechanical buttonholing assembly. The operator places small conductive markers on the fabric at the top and bottom of the desired buttonhole location. When the contacts on the presser foot ride over the markers, a circuit is completed and proper steps in the buttonholing sequence are initiated.

Abstract: An automatic buttonhole sizing device for sewing machines which includes a sensing wheel which by resting on the material being sewn, turns as the material is fed and has a rotatable setting ring which programs the size of the buttonhole. Incorporated in the sensing wheel are one fixed and one movable tab for holding any one of many buttons of various sizes therebetween, wherein the size of the button determines the position of the movable tab. The movable tab is so associated with the setting ring of the sensing wheel that when the two tabs are positioned touching opposite sides of a button by rotating the setting ring, the size of the buttonhole is automatically determined from the final positioning of the setting ring.

Abstract: In a sewing machine in which any one of a variety of stitch patterns, each of which may have a different number of successive needle penetrations, may be produced repetitively, an operator influenced control is disclosed capable of limiting the operation of the sewing machine to the stitching of a single execution of any selected stitch pattern. After the stitching of the single pattern has been completed, further operation of the sewing machine is inhibited by suspension of needle reciprocation, needle jogging and work feed motion.