2,727 research outputs found

    Non-Monotonic Decision Rules for Sensor Fusion

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    This article describes non-monotonic estimators of a location parameter from a noisy measurement Z = Ɵ + V when the possible values of e have the form (0, ± 1, ± 2,. . . , ± n}. If the noise V is Cauchy, then the estimator is a non-monotonic step function. The shape of this rule reflects the non-monotonic shape of the likelihood ratio of a Cauchy random variable. If the noise V is Gaussian with one of two possible scales, then the estimator is also a nonmonotonic step function. The shape this rule reflects the non-monotonic shape of the likelihood ratio of the marginal distribution of Z given Ɵ under a least-favorable prior distribution

    Sensor-Fusion With Statistical Decision Theory: A Prospectus of Research in the GRASP Lab

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    The purpose of this report is to describe research in sensor fusion with statistical decision theory in the GRASP Lab, Department of Computer and Information Science, University of Pennsylvania. This report is thus a tutorial overview of the general research problem, the mathematical framework for the analysis, the results of specific research problems, and directions of future research. The intended audience for this report includes readers seeking a self-contained summary of the research as well as students considering study in this area. The prerequisite for understanding this report is familiarity with basic mathematical statistics

    Dedication of the Palomar Observatory and the Hale Telescope

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    The dedication of the Palomar Observatory, if it were being held in England, would be accompanied by brilliant pageantry both of the state, with its knights, heralds, pursuivants, kings at arms, admirals and captains, and of the church with its bishops, priests and deacons, crucifiers and choirs; and I am sure that we feel the quality of religion in this ceremony. We would hear the choirs chanting in antiphony that great canticle which so delights the choir boys: Benedicite, omnia opera Domini

    Multivariate Data Fusion Based on Fixed-Geometry Confidence Sets

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    The successful design and operation of autonomous or partially autonomous vehicles which are capable of traversing uncertain terrains requires the application of multiple sensors for tasks such as: local navigation, terrain evaluation, and feature recognition. In applications which include a teleoperation mode, there remains a serious need for local data reduction and decision-making to avoid the costly or impractical transmission of vast quantities of sensory data to a remote operator. There are several reasons to include multi-sensor fusion in a system design: (i) it allows the designer to combine intrinsically dissimilar data from several sensors to infer some property or properties of the environment, which no single sensor could otherwise obtain; and (ii) it allows the system designer to build a robust system by using partially redundant sources of noisy or otherwise uncertain information. At present, the epistemology of multi-sensor fusion is incomplete. Basic research topics include the following task-related issues: (i) the value of a sensor suite; (ii) the layout, positioning, and control of sensors (as agents); (iii) the marginal value of sensor information; the value of sensing-time versus some measure of error reduction, e.g., statistical efficiency; (iv) the role of sensor models, as well as a priori models of the environment; and (v) the calculus or calculi by which consistent sensor data are determined and combined

    Surface Autonomous Vehicle for Emergency Rescue

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    The goal of this document is to clearly define the problem parameters and project objectives and to clearly describe the design process, planned final design, and manufacturing and testing procedures for the senior design project of Team 26: SAVER -- the Surface Autonomous Vehicle for Emergency Rescue. This is both for the purpose of project planning and for clear communication between all parties involved in the project. The objective of the SAVER project is to develop a proof of concept for an autonomous maritime search and rescue vehicle for aiding in man-overboard missions. To accomplish this goal, a list of specifications was developed based on background research and interviews with potential customers. These specifications, discussed later in this document, guided the design process, analysis, and testing plans, which are also covered. Based on this research and analysis, the SAVER team developed a final design consisting of a structural hull and frame made from fiberglass and MDF, respectively, which was to be waterproofed and filled with foam. An electronics system would monitor the relative positions of the vehicle and victim via GPS and actuate a thruster and rudder. This prototype was designed to be safe, reliable, and effective, and was expected to meet all specifications. By April 2020, due to the COVID-19 pandemic, the Cal Poly campus was shut down and all work was being carried out remotely. Without access to campus labs or shops, the team’s ability to complete work on this project was seriously limited. Through meetings with their sponsor and advisor, the project’s scope underwent major changes, and a new plan was established. The team was to focus on completing the mechatronics portion of the build and fully documenting all current and future design plans so that a future senior project team could complete the work at a later time. These scope changes as well as all manufacturing and testing work completed both before and after the scope change are discussed in this document as well. In order to make it possible for a future senior project team to complete work on this project, detailed plans for manufacturing, assembly, and testing of the device, as well as thorough documentation of the completed electronics build and device firmware are also included. Additionally, a “Guide for Future Team” is included as Appendix Q, which discusses a few of the biggest concerns and issues that the team has faced as well as some advice and references to assist future engineers with the continuation of this project

    Cushing\u27s Disease: Dilemmas of Diagnosis and Management

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    Determining the cause of Cushing\u27s disease and correcting the abnormality presents a continuing challenge to the clinician despite remarkable advances in diagnostic and therapeutic techniques. We present seven cases to illustrate 1) the classic disorder cured by pituitary adenomectomy: 2) persistence of the disease after adenomectomy: 3) Cushing\u27s disease manifesting in the puerperium and remitting with dopamine agonist therapy: 4) a patient whose disease relapsed at least five times during 20 years of treatment by adrenalectomy, pituitary radiation, mitotane, and pituitary adenomectomy; 5) the Nelson syndrome; 6) the ectopic adrenocorticotropic hormone (ACTH) syndrome in a patient with dexamethasone suppressible urinary cortisol who had a pituitary adenoma which stained positively for ACTH hut who was not cured by total hypophysectomy; and 7) a patient whose ACTH-secreting tumor proved fatal despite repeated surgical, radiologic, and pharmacologic measures

    Régimen Mype Tributario (D.L. N°1269) y su Incidencia en la Situación Financiera de la Empresa Idea Hogar E.I.R.L. Periodo 2016 – 2017

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    La presente tesis tuvo como objetivo determinar la incidencia del Régimen Mype Tributario (Decreto Legislativo N°1269) en la Situación Financiera de la empresa Idea Hogar EIRL. periodo 2016-2017. Teniendo como población y muestra a la empresa Idea Hogar EIRL, para ello se analizó el Régimen Mype Tributario, luego se analizó el estado de situación financiera de la empresa Idea Hogar y por último se hizo una comparación entre los resultados de los ratios del Régimen General y Régimen Mype Tributario. Además, es importante mencionar que la información se obtuvo a través de un análisis documental. Con el acogimiento al Régimen Mype Tributario la empresa Idea Hogar, tendrá un ahorro del Impuesto a la Renta de S/. 38,890.90. Esto se debe a que se aplica una menor tasa para la determinación de dicho impuesto
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