Robert J. Jensen

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T he recognition that better use of existing internal knowledge could enhance survival chances of organizations has spawned substantial interest in the transferability of routinized, experiential learning to additional settings within the organization. Previous research has established that trustworthiness of the source enhances such knowledge transfer.(More)
We present a framework for geometric warps and deformations. The framework provides a conceptual and mathematical foundation for analyzing known warps and for developing new warps, and serves as a common base for many warps and deformations. Our framework is composed of two components: a generic modular algorithm for warps and deformations; and a concise,(More)
Platelets are highly reactive components of the circulatory system with well-documented hemostatic function. Recent studies extend platelet function to modulation of local inflammatory events through the release of chemokines, cytokines, and a number of immunomodulatory ligands, including CD154. We hypothesized that platelet-derived CD154 modulates adaptive(More)
A variety of recent experiments has resolved the way in which signals are transmitted from rod photoreceptors to ganglion cells in the mammalian retina. Rods connect to a single class of rod bipolar cell, which depolarize in response to light. Rod bipolar cells are not connected directly to ganglion cells: they synapse onto rod amacrine cells, which excite(More)
We investigated the effects of dopamine and its agonists and antagonists on the receptive field properties of ganglion cells in the isolated eyecup preparation of the rabbit. In general, dopamine (20-250 microM) reduced the overall sensitivity of ganglion cells to light stimuli while increasing the spontaneous activity of off-center cells and decreasing the(More)
1. Extracellular recordings were made from ON-OFF directionally selective ganglion cells in superfused rabbit retinas in order to examine the effects of voltage-activated Ca2+ channel blockers on the response of these ganglion cells to a moving bar of light. 2. Bath application of Cd2+ (67-110 microM) abolished directional selectivity in the ganglion cells.(More)
Starburst amacrine cells in the rabbit retina were labeled following an intraocular injection of the fluorescent dye, 4,6,diamidino-2-phenylindole (DAPI). From each eye a strip of retina was removed, mounted on a platform beneath an epifluorescence microscope, and superfused with a physiological solution. The tip of a tungsten microelectrode (for(More)
Although mounting evidence indicates that platelets participate in the modulation of both innate and adaptive immunity, the mechanisms by which platelets exert these effects have not been clearly defined. The study reported herein uses a previously documented adoptive transfer model to investigate the ability of platelet-derived membrane vesicles to(More)
The effects of dopamine antagonists on the extracellularly recorded activity of ON- and OFF-center brisk ganglion cells and ON-OFF directionally selective ganglion cells in the rabbit retina were investigated. Haloperidol, fluphenazine, and cis-flupenthixol, infused in the arterial system supplying the eye, produced similar effects. In general, these drugs(More)