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The function of smooth pursuit is to keep the fovea pointed at a small visual target that moves smoothly across a patterned background. Chemical lesions, single cell recordings, and behavioral measures have shown that the cortical motion processing pathways form the afferent limb for pursuit. Important areas include at least the striate cortex and the(More)
1. We have investigated the role of retinal and extraretinal signals in the initiation and maintenance of smooth-pursuit eye movements in trained rhesus monkeys. Visual targets were presented in open-loop conditions by using electronic feedback of eye position to form the command for target position. This allowed us to present stimuli that were stabilized(More)
You don't have to look far to become aware of the effect that service-oriented architecture (SOA) is having on software systems. Vendors are aggressively marketing hardware, software, tools, and services that support SOA implementation within organizations as diverse as the Department of Defense, banks, federal agencies, manufacturing companies, and health(More)
The ideas and findings in this report should not be construed as an official DoD position. It is published in the interest of scientific and technical information exchange. Use of any trademarks in this report is not intended in any way to infringe on the rights of the trademark holder. Internal use. Permission to reproduce this document and to prepare(More)
An effective way of leveraging the value of legacy systems is to expose their functionality, or subsets of it, as services. In the business world, this has become a very popular approach because it allows underlying systems to remain largely unchanged, while exposing functionality to a larger number of clients through well-defined service interfaces. The(More)
The ideas and findings in this report should not be construed as an official DoD position. It is published in the interest of scientific and technical information exchange. Use of any trademarks in this report is not intended in any way to infringe on the rights of the trademark holder. Internal use. Permission to reproduce this document and to prepare(More)
Standards have been instrumental in achieving the significant level of systems interoperability we rely on in almost every domain. Many organizations are betting on the ability of standards to provide unprecedented end-to-end systems interoperability with partner organizations. Our experience suggests that the expectation of what can be achieved with(More)
Service-oriented architecture (SOA) has become an increasingly popular mechanism for achieving business agility and reuse. However, organizations implementing SOA-based solutions are facing new implementation challenges related to validation and verification activities in an SOA environment, especially of runtime system quality attributes such as(More)
Technology to support system comprehension tends to reflect either a " bottom-up " or " top-down " approach. Bottom up approaches attempt to derive system models from source code, while top-down approaches attempt to map abstract " domain " concepts to concrete system artifacts. While both approaches have merit in theory, in practice the top-down approach(More)
Any opinions, findings and conclusions or recommendations expressed in this material are those of the author(s) and do not necessarily reflect the views of [Insert Sponsor(s) or] the United States Department of Defense. This material has been approved for public release and unlimited distribution except as restricted below. Internal use:* Permission to(More)