Engineering topics
Publications and source records attributed to Katz, J. L..
An initial definition of on-board processing requirements for an advanced satellite communications system to service domestic markets in the 1990's is presented. An exemplar system architecture with both RF on-board switching and demodulation/remodulation baseband processing was used to identify important issues related to system implementation, cost, and technology development.
Abstracts are presented of a literature survey of reports concerning the application of signal processing concepts. Approximately 300 references are included.
Recent determination of the elastic moduli of hydroxyapatite by ultrasonic methods permits a re-examination of the Voigt or parallel model of the elastic behavior of bone, as a two phase composite material. It is shown that such a model alone cannot be used to describe the behavior of bone. Correlative data on the elastic moduli of dentin, enamel and various bone samples indicate the existence of a nonlinear dependence of elastic moduli on composition of hard tissue. Several composite models are used to calculate the bounds on the elastic behavior of these tissues. The limitations of these models are described, and experiments to obtain additional critical data are discussed.
Experimental measurements of the isotropic elastic moduli on polycrystalline specimens of hydroxyapatite and fluorapatite are compared with elastic constants measured directly from single crystals of fluorapatite in order to derive a set of pseudo single crystal elastic constants for hydroxyapatite. The stiffness coefficients thus derived are given. The anisotropic and isotropic elastic properties are then computed and compared with similar properties derived from experimental observations of the anisotropic behavior of bone.
Elastic behavior of bone as two phase composite material, using ultrasonically measured hydroxyapatite moduli
Integrated Bragg X ray scattering intensities for monatomic crystalline lattices, considering thermal diffuse component contribution
Mean square atomic displacements variation with temperature in Zn, evaluating Debye temperature
X-ray Debye temperature thermal variation measurements of pure nickel and chromium
Crystal and molecular structure of ruthenium- ammonia coordination compounds
X-ray and infrared data on crystal and molecular structure of ruthenium-sulfur dioxide complexes
Crystal and molecular structure of chlorotetraammine /sulfur dioxide/ ruthenium chloride
X-ray scattering technique for study of elastic properties of nickel-iron alloy