A study of digital techniques for signal processing

Analysis and definition of digital techniques for signal processin

A study of digital techniques for signal processing Semiannual status report, 1 Feb. - 30 Jun. 1968

Recursive techniques for digital signal processing, data smoothing and compression, and computer simulation of low error rate communicatio

A study of digital techniques for signal processing Final status report, 1 Jul. 1968 - 31 Jan. 1969

Digital signal processing, data smoothing, and computer simulatio

A study of digital techniques for signal processing Semiannual status report, 1 Feb. - 31 Jul. 1970

Adaptive array processing, dynamic programming, digital data transmission, recursive adaptive equalizers, and finite memory communication system

The evolving maintenance of certification process: update on the financial status of the medical boards

Medical board organizations have accumulated large asset balances, in part due to the monetization of physician board recertification, as well as capital gains in positive investment conditions. Physicians across the country have raised concerns regarding the effectiveness and efficiency of existing recertification processes, to which the American Board of Medical Specialties and independent accreditation boards have responded with newly instituted changes. The present article analyzes the publicly available F990 tax forms of the medical boards in an effort to provide data to the ongoing debate. Although some boards have begun to mobilize assets in recent years, many continue to accumulate wealth. It remains to be seen whether the new recertification programs will bring about change or perpetuate organizational wealth

The structure of Herbig-Haro object 43 and Orion dark cloud extinction

New ultraviolet and optical observations of Herbig-Haro Object No. 43 are reported. Continuum and emission line fluxes in the range 1250 A equal to or less than lambda equal to less than 7350A have been measured. The continuum fluxes are best matched by an enhanced H two photon component added to H free bound emission, assuming theta Ori extinction curve with E(B-V) = 0.2, R = 5. The strucutre and dynamics of three components within the object are discussed. The object has a radiative output of equal to or greater than 0.23 infrared luminosity in ultraviolet and optical radiation combined. The energy requirements are discussed in terms of the production of shock waves by a collimated, supersonic mass outflow from a nearby infrared source

The ionization of hydrogen and of hydrogenic positive ions by electron impact

Ionization of hydrogen and hydrogenic positive ions by electron impac

Mood, motility and 17-hydroxycorticoid excretion - a polyvariable case study

Mood, motility, and 17-hydroxycorticoid excretion in cyclic manic-depressive patien

Large-Scale Advanced Prop-Fan (LAP) pitch change actuator and control design report

In recent years, considerable attention has been directed toward improving aircraft fuel consumption. Studies have shown that the high inherent efficiency previously demonstrated by low speed turboprop propulsion systems may now be extended to today's higher speed aircraft if advanced high-speed propeller blades having thin airfoils and aerodynamic sweep are utilized. Hamilton Standard has designed a 9-foot diameter single-rotation Large-Scale Advanced Prop-Fan (LAP) which will be tested on a static test stand, in a high speed wind tunnel and on a research aircraft. The major objective of this testing is to establish the structural integrity of large-scale Prop-Fans of advanced construction in addition to the evaluation of aerodynamic performance and aeroacoustic design. This report describes the operation, design features and actual hardware of the (LAP) Prop-Fan pitch control system. The pitch control system which controls blade angle and propeller speed consists of two separate assemblies. The first is the control unit which provides the hydraulic supply, speed governing and feather function for the system. The second unit is the hydro-mechanical pitch change actuator which directly changes blade angle (pitch) as scheduled by the control