Suboptimal design of linear regulator systems subject to computer storage limitations

Massachusetts Institute of Technology. Dept. of Electrical Engineering. Thesis. 1967. Ph.D.Vita.Bibliography: p. 170-172.by David Lee Kleinman.Ph.D

The DDD-III: A Tool for Empirical Research in Adaptive Organizations

Proceedings of the 1996 Command and Control Research and Technology Symposium: Command and Control in the Information AgeCurrent research involving adaptive archi tectures for Joint Command and Control (C2) seeks to examine the interactions between task (or mission) structure, and the way in which the organization charged with the mission is itself structured. In order to examine these interactions empirically, a flexible research paradigm is required with which to conduct controlled experiments in a laboratory environment. The 3rd-generation Distributed Dynamic Decision.making (DDD-111) paradigm was designed to meet this need by treating an air, sea and ground environment, a variety of task classes, and controllable platforms with subplatforms, sensors and weapons (resources). DDD-111 is implemented as a multi-player, real-time simulation running in a UNIX environment. The design of the DDD-111 focuses on the dynamic/execution phase of the mission and allows for manipulation of key structural variables in task and organizational dimen- sions. The DDD-111 has the ability to con- strain and/or to manipulate organizational structures such as authority, information, communication, resource ownership, task assignment, etc. This paper describes the new DDD-111 paradigm, its extensions beyond the DDD-11, the dimensions of task and organization structure considered, and how they are operationalized

Model-Based Organization Analysis and Design for an ESG Organization

11th Command and Control Research and Technology Symposium (CCRTS), June 20-22, 2006, San Diego, C

Congruence of Human Organizations and Missions: Theory versus Data

1999 Command and Control Research and Technology Symposium (CCRTS), June 29 - July 1, 1999, U.S. Naval War College, Rhode IslandIn this paper, we present a methodology for quantifying the degree of fit between a mission and an organization based on the closeness between the task structure (i.e., resource requirements and task interdependence) and the DM-asset allocation across the organization (i.e., amount and distribution of resource capabilities among DMs, and organizational processes). This closeness is based on three main characteristics of organizational performance: workload balance, communication requirements, and DM-DM dependence. These characteristics are affected, in turn, by the interactions and interdependencies of the organizational processes and the demands of the mission scenario. Invariably, coordination is essential to achieve good performance because the information required for decisionmaking is often distributed. However, excessive DM-DM communication and coordination are harmful to performance, since they increase the processing workload/overhead that delays task execution. Performance improvements can be obtained by changing the structure and processes of an organization to decrease the requisite coordination, while balancing the levels of workload across the organization and reducing inter DM dependence.This work was supported by the Office of Naval Research under contract # N00014-00-1-0101

Remote diagnosis server

A network-based diagnosis server for monitoring and diagnosing a system, the server being remote from the system it is observing, comprises a sensor for generating signals indicative of a characteristic of a component of the system, a network-interfaced sensor agent coupled to the sensor for receiving signals therefrom, a broker module coupled to the network for sending signals to and receiving signals from the sensor agent, a handler application connected to the broker module for transmitting signals to and receiving signals therefrom, a reasoner application in communication with the handler application for processing, and responding to signals received from the handler application, wherein the sensor agent, broker module, handler application, and reasoner applications operate simultaneously relative to each other, such that the present invention diagnosis server performs continuous monitoring and diagnosing of said components of the system in real time. The diagnosis server is readily adaptable to various different systems

Tricuspid valve disease with significant tricuspid insufficiency in the fetus: Diagnosis and outcome

AbstractThe echocardiographic studies and clinical course of 27 fetuses (mean gestationl age 26.9 weeks) diagnosed in utero with tricuspid valve disease and significant tricuspid regurgitation were reviewed. The diagnosis of Ebstein's anomaly was made in 17 of the fetuses, 7 had tricuspid valve dysplasia with poorly developed but normally attached leaflets and 2 had an unguarded tricuspid valve orifice with little or no identifiable tricuspid tissue. One fetus was excluded from data analysis because a more complex heart lesion was documented at autopsy. All fetuses had massive right atrial dilation and most who were serially studied had progressive right-sided cardiomegaly. Hydrops fetalis was found in six cases and atrial flutter in five.Associated cardiac lesions included pulmonary stenosis in five cases and pulmonary alresia in six. Four fetuses with normal forward pulmonary artery flow at the initial examination were found at subsequent study to have retrograde pulmonary artery and ductal flow in association with the development of pulmonary stenosis (n = 1) and pulmonary atresia (n = 3). On review of the clinical course of the 23 fetuses (excluding 3 with elective abortion), 48% of the fetuses died in utero and 35% who were liveborn died despite vigorous medical and, when necessary, surgical management, many of whom had severe congestive heart failure. Of the four infants who survived the neonatal period, three had a benign neonatal course, all of whom were diagnosed with mild to moderate Ebstein's anomaly; only one had pulmonary outflow obstruction. An additional finding at autopsy was significant lung hypoplasia documented in 10 of 19 autopsy reports.Tricuspid valve anomalies with tricuspid insufficiency can be identified echocardiographically in the fetus and should be searched for in the presence of right atrial enlargement. The prognosis for the fetus diagnosed in utero with significant tricuspid valve disease is extremely poor, with a prenatal course that includes progressive right heart dilation, with cardiac failure and lung hypoplasia in many and development of pulmonary stenose or pulmonary atresia later in gestation in some

An Investigation of ISR Coordination and Information Presentation Strategies to Support Expeditionary Strike Groups

12th ICCRTS, Adapting C2 to the 21st CenturyThis paper describes a planned experiment based on the combined research of the Adaptive Architectures for Command and Control (A2C2) and the Command-21 programs, both of which are sponsored by the Office of Naval Research. In line with the theme of this year’s symposium, “Adapting C2 to the 21st Century,” in this research we focus on the nexus of organizational design and information presentation strategies — both of which are undergoing dramatic changes in form and function within the US military. The formation of Expeditionary Strike Groups (ESGs) provides one example of the transformational vision provided in the Naval Operating Concept where Strike Groups offer the potential to revolutionize naval warfare in the littoral region. The ESG provides a flexible force package, capable of tailoring itself to accomplish a wide variety of mission sets. In this effort, we seek to explore how ESGs with alternative structures and processes, in this case specifically related to incorporation of an intelligence, surveillance, and reconnaissance (ISR) officer and different information presen-tation strategies, can affect performance and information flow in an information rich planning and execution environment

SDSS J092455.87+021924.9: an Interesting Gravitationally Lensed Quasar from the Sloan Digital Sky Survey

We report the discovery of a new gravitationally lensed quasar from the Sloan Digital Sky Survey, SDSS J092455.87+021924.9 (SDSS J0924+0219). This object was selected from among known SDSS quasars by an algorithm that was designed to select another known SDSS lensed quasar (SDSS 1226-0006A,B). Five separate components, three of which are unresolved, are identified in photometric follow-up observations obtained with the Magellan Consortium's 6.5m Walter Baade telescope at Las Campanas Observatory. Two of the unresolved components (designated A and B) are confirmed to be quasars with z=1.524; the velocity difference is less than 100 km sec^{-1} according to spectra taken with the W. M. Keck Observatory's Keck II telescope on Mauna Kea. A third stellar component, designated C, has the colors of a quasar with redshift similar to components A and B. The maximum separation of the point sources is 1.78". The other two sources, designated G and D, are resolved. Component G appears to be the best candidate for the lensing galaxy. Although component D is near the expected position of the fourth lensed component in a four image lens system, its properties are not consistent with being the image of a quasar at z~1.5. Nevertheless, the identical redshifts of components A and B and the presence of component C strongly suggest that this object is a gravitational lens. Our observations support the idea that a foreground object reddens the fourth lensed component and that another unmodeled effect (such as micro- or milli-lensing) demagnificates it, but we cannot rule out the possibility that SDSS0924+0219 is an example of the relatively rare class of ``three component'' lens systems.Comment: 24 pages, 6 figures, accepted by A