Filters: Collection: "ir_uspace"
| Creator | Title | Description | Subject | Date | ||
|---|---|---|---|---|---|---|
| 426 |
 | 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 |
| 427 |
 | 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 |
| 428 |
 | 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 |
| 429 |
 | 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 |
| 430 |
 | 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 |
| 431 |
 | Cole, Edwin Randolph | The removal of unknown image blurs by homomorphic filtering | This report describes a homomorphic method for the estimation and removal of unknown image blurs, which are presumed to have been caused by a linear stationary system. Previous methods have required a more or less perfect a priori knowledge of the identity of the blur. the method described here requ... | Homomorphic filtering; Removal; Image blurs; Blurred image | 1974 |
| 432 |
 | Warner, Homer R. | The HELP System for Medical Decision Making | Biomedical Informatics | 1974 | |
| 433 |
 | Warner, Homer R. | A Computer System for the Cardiovascular Laboratory | Biomedical Informatics | 1974 | |
| 434 |
 | Gardner, Reed M. | Computerized Intensive Care Monitoring at LDS Hospital - Progress and Development | Biomedical Informatics | 1974 | |
| 435 |
 | Mattis, Daniel C. | Conductivity of one-dimensional interacting fermions* | Using an exactly soluble model, the decay rate of a current-carrying state of one-dimensional fermions is calculated in the presence of random scatterers at finite temperature and the dc conductivity thereby inferred. For interacting fermions it is modified by a factor (T/T + θ)g, where g is a posi... | Fermi gas | 1974-04 |
| 436 |
 | Cannon, Thomas Michael | Digital image deblurring by nonlinear homomorphic filtering (CSTD-74-004) | This report is concerned with the digital estimation of the frequency response of a two-dimensional linear system through which images have been passed and blurred. Almas t no a priori Knowledge concerning the system is required, and only one blurred image is necessar\d for a successful estimation. ... | Computer animation | 1974-08 |
| 437 |
 | Mattis, Daniel C. | Effect of band structure on ferromagnetism* | We extend Nagaoka's study of the ferromagnetism of nearly half-filled bands in the infinite-repulsion limit of the Hubbard model by including next-nearest-neighbor tight-binding overlap matrix elements K2. Particles can now get past one another, even in one dimension. We find corroboration of Nagaok... | Eigenstates; Spin waves | 1974-08 |
| 438 |
 | Clark, James Henry | 3-D Design of free-form B-Spline surfaces (CSTD-74-005) | This report describes an experimental system for designing free-form B-spline surfaces using a head-mounted display. In this system, the interaction with the surfaces takes place in three dimensions as the designed object's shape Is updated in real-time. The report also examines some of the problems... | Computer animation | 1974-09 |
| 439 |
 | Mattis, Daniel C. | Dynamic properties of a nonsuperfluid Bose liquid in the random-phase approximation | The dynamic structure factor S(k,w) of a nonideal Bose liquid is calculated within the random-phase approximation and compared with neutron scattering data by Cowley and Woods for liquid helium in the temperature range Tλ<T≤4.2°K, with the conclusion that the model is wholly inadequate. A low-f... | Bose liquid; Random-phase approximation; Overdamping | 1974-11 |
| 440 |
 | Catmull, Edwin | A subdivision algorithm for computer display of curved surfaces (CSTD-74-006) | This report presents a method for producing computer shaded pictures of curved surfaces. Three-dimensional curved patches are used, as contrasted with conventional methods using polygons. The method subdivides a patch into successively smaller subpatches until a subpatch is as small as a raster-elem... | Computer animation | 1974-12 |
| 441 |
 | Capecchi, Mario R. | Selective degradation of abnormal proteins in mammalian tissue culture cells. | The degradation rates of several missense mutants of hypoxanthine-guanine phosphoribosyltransferase (EC 2.4.2.8) in mouse L cells are compared to those of the wild-type enzyme. Although the rates of total protein breakdown in the mutant cell lines are identical to that of the parental L cell line, ... | Gene Expression Regulation; Mice, Transgenic; Microscopy, Fluorescence | 1974-12-01 |
| 442 |
 | Warner, Homer R. | HELP - A Computer System for Medical Decision Making | Biomedical Informatics | 1975 | |
| 443 |
 | Warner, Homer R. | On Confiding in Computers | Biomedical Informatics | 1975 | |
| 444 |
 | Warner, Homer R. | Assessment of Ventricular Function in Coronary Artery Disease Using Nitroglycerin and Computerized Analysis of Left Ventriculograms | Biomedical Informatics | 1975 | |
| 445 |
 | Gardner, Reed M. | Computerized Blood Gas Interpretation and Reporting System | Biomedical Informatics | 1975 | |
| 446 |
 | Hawkes, Kristen | Binumarien color categories | This paper has two aims. The first is to describe an ethnographically new system of color classification, Binumarien, a non-Austronesian or Papuan language of the Eastern Central Highlands of New Guinea2. In this connection we are particularly interested in relating our data to the Berlin and Kay (1... | Binumarien; binumariens | 1975 |
| 447 |
 | Gesteland, Raymond F.; Atkins, John F. | Origin and destiny of adenovirus proteins | Lytic infection of human cells by adenovirus proceeds by a temporal expression of genes. Classically two phases have been defined: an early phase, which includes events occurring before the onset of DNA synthesis (8 hours), and a late phase, including events whose existence depends on the onset of... | Protein Biosynthesis; DNA, Viral; Adenoviridae; RNA, Viral; Time Factors | 1975 |
| 448 |
 | Flynn, John J. | Distributive justice: some institutional implication of Rawls' Theory of Justice | Distributive justice combines Philosophy;, economics, and jurisprudence in an attempt to establish the fundamental theory by which wealth and resources are allocated among the members of a society. The need for a rationally based distributive system to allocate resources in an organized society aris... | Justice, theory; Philosophy;, Law; Jurisprudence; Economics | 1975 |
| 449 |
 | Firmage, Edwin B. | Vladivostok and beyond: SALT I and the propects for SALT II | The tortuously constricted boundaries within which the Vladivostok agreement can be considered as an advance toward the goal of arms reduction and stability remind us once again that technology unconstrained by law inexorably limits that arena within which we enjoy the capacity to control our own f... | Arms control; SALT I; SALT II; Atomic negotiations | 1975 |
| 450 |
 | Firmage, Edwin B. | Utah Supreme Court and the rule of law: Phillips and the Bill of Rights in Utah | The Utah Supreme Court in State v. Phillips denied the applicability of the freedom of speech provisions of the fist amendment (and by dicta any other provision of the Bill of Rights) as a protection of individual rights against state governments by way of the due process clause of the fourteenth am... | Utah Law; Utah Supreme Court; Free speech | 1975 |