Filters: Collection: "ir_uspace"
| Creator | Title | Description | Subject | Date | ||
|---|---|---|---|---|---|---|
| 401 |
 |
Mattis, Daniel C. | Phonons and phase transitions of helium | We find a new collective shear-wave-like mode above Tλ, merging with the longitudinal acoustic mode at a higher critical temperature. The speed of the new sound wave is predicted to vanish near Tλ as s ∞ (T -Tλ)½ . | 1973-06 | |
| 402 |
 |
Phong-Tuong, Bui | Illimunation of computer generated images (CSTD-73-005) | This .report describes a new model for the shading of computer-generated images of objects in general and of polygonally descibed free-form curved surfaces in particular. The shading function is determined by a linear interpolation of the curvature of the surface. It takes into consideration the phy... | Computer animation | 1973-07 |
| 403 |
 |
Wessler, Barry David | Computer-assisted visual communication (CSTD-73-004) | The purpose of this research was to build an environment m which an author can create a visual communications vehicle (a film) which will convey his ideas and thoughts. The primary motivation for this effort was the powerful ability of film to combine instruction with entertainment. The entertainmen... | Computer animation | 1973-07 |
| 404 |
 |
Mattis, Daniel C. | Mobility gap and anomalous dispersion | It is shown that anomalous dispersion of quasiparticles leads to nonpropagating states. Therefore regions of anomalous dispersion define a sort of "mobility gap." Using the coherent-potential approximation, we calculate the conditions for obtaining such a mobility gap in a disordered binary alloy. J... | Mobility gap; Disordered media; Quasiparticles | 1973-09 |
| 405 |
 |
Capecchi, Mario R. | Altered enzymes in drug-resistant variants of mammalian tissue culture cells. | Two selective procedures are compared in an effort to isolate variants of mouse L cells containing structural gene mutations. Among the resulting variant cloned cell lines are found two types of alterations in theenzyme hypoxanthine phosphoribosyl transferase (EC 2.4.2.8.) (1): enzyme with altered ... | Drug Resistance; Azaguanine; Clone Cells; Hypoxanthines | 1973-11 |
| 406 |
 |
Pryor, T. Allan | A Computer Program for Stress Test Data Processing | Biomedical Informatics | 1974 | |
| 407 |
 |
Bennett, Donald R. | Current Status of EEG Telephone Telemetry | Biomedical Informatics | 1974 | |
| 408 |
 |
Warner, Homer R. | A Technique for the Detection of Asynergistic Motion in the Left Ventricle | Biomedical Informatics | 1974 | |
| 409 |
 |
Gardner, Reed M. | Eight-Channel Data Set for Clincal EEG Transmission Over Dial-Up Telephone Network | Biomedical Informatics | 1974 | |
| 410 |
 |
Boyer, Richard S. | Hypersensitivity Lung Disease in the Turkey Raising Industry | Biomedical Informatics | 1974 | |
| 411 |
 |
Warner, Homer R. | A Computer System for the Cardiovascular Laboratory | Biomedical Informatics | 1974 | |
| 412 |
 |
Warner, Homer R. | The HELP System for Medical Decision Making | Biomedical Informatics | 1974 | |
| 413 |
 |
Warner, Homer R. | Left Ventricular Videometry | Biomedical Informatics | 1974 | |
| 414 |
 |
Jameson, Kenneth P. | In-migration experience of Indiana's standard metropolitan statistical areas | THE 1970 Census, Fourth Count on Population, can be used to develop a very detailed description of in-migration patterns.1 The main results of such a description for the ten Indiana Standard Metropolitan Statistical Areas (SMSA's) can be summarized as follows.2 | In-migration | 1974 |
| 415 |
 |
Symko, Orest George | Background signals in SQUID magnetometers | Since a SQUID magnetometer is an extremely sensitive device capable of detecting minute magnetic flux changes in a sample, it will also detect unwanted signals from materials near the magnetometer. The presence of temperature dependent "background signals" limits the accuracy of measurements of ... | SQUID magnetometer; Background signals | 1974 |
| 416 |
 |
Warner, Homer R. | Computer Assisted Instruction for Teaching Clinical Decision-Making | Biomedical Informatics | 1974 | |
| 417 |
 |
Normann, Richard A. | Control of retinal sensitivity. I. Light and dark adaptation of vertebrate rods and cones | Rods and cones in Necturus respond with graded hyperpolarization to test flashes spanning about 3.5 log units of intensity. Steady background levels hyperpolarize the rods, and the rod responses become progressively smaller as background level is increased. In cones, higher background levels reduce... | Retina;Light and Dark Adaptation; Recepters; Bipolars; Ganglion Cells | 1974 |
| 418 |
 |
Mattis, Daniel C. | New wave-operator identity applied to the study of persistent currents in 1D | We show that a large class of backward-scattering matrix elements involving Δk ~ + 2k F vanish for fermions interacting with two-body attractive forces in one dimension. (These same matrix elements are finite for noninteracting particles and infinite for particles interacting with two-body repulsiv... | Persistent current; Supercurrents | 1974 |
| 419 |
 |
Gardner, Reed M. | Computerized Intensive Care Monitoring at LDS Hospital - Progress and Development | Biomedical Informatics | 1974 | |
| 420 |
 |
Miller, Neil Joseph | Removal of noise from a voice signal by synthesis | This report describes research into the problem of rectification of sound recordings made under adverse conditions and communicated and recorded with a great deal of noise. In the course of this research, a number of refinements have been made to the process of digital speech synthesis through new v... | Rectification; Homomorphic vocoder; Digital speech synthesis; Filtering device | 1974 |
| 421 |
 |
Colas-Baudelaire, Patrick | Digital picture processing and psychophysics: a study of brightness perception | A computer driven display system was used to study brightness contrast phenomena, in a project motivated by research in digital picture processing. The modeling approach was that of Stockham and Davidson: the visual system is modeled as the cascade of a linear system (eye optics) and a multiplicati... | Digital picture processing; Computer driven display system; Brightness contrast | 1974 |
| 422 |
 |
Boll, Steven F. | Selected methods for improving synthesis speech quality using linear predictive coding: system description, coefficient smoothing and streak | This report develops two generalizations of the standard Linear Predictive Coding (LPC) implementation of a narrow band speech compression system. The purpose of each method is to improve the speech quality that is available from a standard LPC system. | Linear Predictive Coding; LPC; Speech compression system; Pitch excited system | 1974 |
| 423 |
 |
Vickers, Donald Lee | Sorcerer's apprentice: head-mounted display and wand | Sorcerer's Apprentice is an interactive computer graphics system utilizing a head-mounted display and at three-dimensional wand. The system allows three-dimensional interaction with line drawings which are displayed in real time, that is about 20 frames per second. The display, worn like a pair of e... | Sorcerer's apprentice; Head-mounted display; Three-dimensional wand | 1974 |
| 424 |
 |
Warner, Homer R. | Can Automation Make Interactive Medical History Taking Feasbile and Acceptable? | Biomedical Informatics | 1974 | |
| 425 |
 |
Gardner, Reed M. | Indewlling Arterial Catheters (Letter) | Biomedical Informatics | 1974 |