UNT Libraries Government Documents Department - 279,198 Matching Results

Search Results

Copyright Protection of Digital Television: The "Broadcast Flag"

Description: This report addresses the adoption of a “broadcast flag” system by the Federal Communications Commission (FCC) to protect digital television (DTV) broadcasts from unauthorized redistribution. The report also addresses the recent decision of the United States Court of Appeals for the District of Columbia Circuit reversing and vacating the FCC’s broadcast flag report and order.
Date: May 11, 2005
Creator: Welborn, Angie A.

The Copyright Registration Requirement and Federal Court Jurisdiction: A Legal Analysis of Reed Elsevier, Inc. v. Muchnick

Description: In New York Times Co. v. Tasini, six freelance authors who had contributed articles to several publications, including The New York Times, Newsday, and Time, sued when the publishers licensed rights to copy and sell the articles to electronic databases such as Lexis/Nexis. Shortly after the Court decided Tasini, three preexisting class action infringement suits, which had been suspended pending the decision, were activated and consolidated in the U.S. District Court for the Southern District of New York. A fourth, nearly identical action was coordinated with that consolidated action. Together, these claims comprise the litigation discussed in this report.
Date: March 18, 2010
Creator: Yeh, Brian T.

Copyright Term Extension: Eldred v. Ashcroft

Description: This report examines the U.S. Supreme Court’s decision in Eldred v. Ashcroft. Plaintiffs/Petitioners challenged the constitutionality under the Copyright Clause of a law adding 20 years to the terms of existing and future copyrights. The law was upheld by both the U.S. district court and the court of appeals considering it. Among the questions before the Supreme Court was whether Congress may retrospectively extend the term of copyright for existing copyrights; and, what role and impact, if any, does the First Amendment have in determining the validity of a congressional extension of copyright terms.
Date: February 14, 2003
Creator: Jeweler, Robin

Copyright Term Extension: Estimating the Economic Values

Description: This report considers proposals to extend the duration of copyrights by 20 years (as in H.R. 2589 and other bills) and related proposals to charge a fee to the owners in order to receive the extension. The method of analysis is economic rather than legal. The report reviews the basic economic principals involved in copyright law and gives rough estimates of the value of copyrights on books, music, and movies produced in the 1920s and 1930s — those that would be most immediately affected by an extension of copyright terms.
Date: May 11, 1998
Creator: Rappaport, Edward

Copyright Term Extension: Estimating the Economic Values

Description: This report considers proposals to extend the duration of copyrights by 20 years (as in H.R. 2589 and other bills) and related proposals to charge a fee to the owners in order to receive the extension. The method of analysis is economic rather than legal. The report reviews the basic economic principals involved in copyright law and gives rough estimates of the value of copyrights on books, music, and movies produced in the 1920s and 1930s — those that would be most immediately affected by an extension of copyright terms.
Date: May 11, 1998
Creator: Rappaport, Edward B

Coral Reef Genomics: Developing tools for functional genomics ofcoral symbiosis

Description: Symbioses between cnidarians and dinoflagellates in the genus Symbiodinium are widespread in the marine environment. The importance of this symbiosis to reef-building corals and reef nutrient and carbon cycles is well documented, but little is known about the mechanisms by which the partners establish and regulate the symbiosis. Because the dinoflagellate symbionts live inside the cells of their host coral, the interactions between the partners occur on cellular and molecular levels, as each partner alters the expression of genes and proteins to facilitate the partnership. These interactions can examined using high-throughput techniques that allow thousands of genes to be examined simultaneously. We are developing the groundwork so that we can use DNA microarray profiling to identify genes involved in the Montastraea faveolata and Acropora palmata symbioses. Here we report results from the initial steps in this microarray initiative, that is, the construction of cDNA libraries from 4 of 16 target stages, sequencing of 3450 cDNA clones to generate Expressed Sequenced Tags (ESTs), and annotation of the ESTs to identify candidate genes to include in the microarrays. An understanding of how the coral-dinoflagellate symbiosis is regulated will have implications for atmospheric and ocean sciences, conservation biology, the study and diagnosis of coral bleaching and disease, and comparative studies of animal-protest interactions.
Date: March 1, 2005
Creator: Schwarz, Jodi; Brokstein, Peter; Manohar, Chitra; Coffroth, MaryAlice; Szmant, Alina & Medina, Monica

CORBA-Based Distributed Software Framework for the NIF Integrated Computer Control System

Description: The National Ignition Facility (NIF), currently under construction at the Lawrence Livermore National Laboratory, is a stadium-sized facility containing a 192-beam, 1.8 Megajoule, 500-Terawatt, ultra-violet laser system together with a 10-meter diameter target chamber with room for nearly 100 experimental diagnostics. The NIF is operated by the Integrated Computer Control System (ICCS) which is a scalable, framework-based control system distributed over 800 computers throughout the NIF. The framework provides templates and services at multiple levels of abstraction for the construction of software applications that communicate via CORBA (Common Object Request Broker Architecture). Object-oriented software design patterns are implemented as templates and extended by application software. Developers extend the framework base classes to model the numerous physical control points and implement specializations of common application behaviors. An estimated 140 thousand software objects, each individually addressable through CORBA, will be active at full scale. Many of these objects have persistent configuration information stored in a database. The configuration data is used to initialize the objects at system start-up. Centralized server programs that implement events, alerts, reservations, data archival, name service, data access, and process management provide common system wide services. At the highest level, a model-driven, distributed shot automation system provides a flexible and scalable framework for automatic sequencing of work-flow for control and monitoring of NIF shots. The shot model, in conjunction with data defining the parameters and goals of an experiment, describes the steps to be performed by each subsystem in order to prepare for and fire a NIF shot. Status and usage of this distributed framework are described.
Date: November 20, 2007
Creator: Stout, E A; Carey, R W; Estes, C M; Fisher, J M; Lagin, L J; Mathisen, D G et al.

A CORBA-based manufacturing environment

Description: A CORBA-based distributed object software system was developed for Sandia`s Agile Manufacturing Testbed (SAMT). This information architecture supports the goals of agile manufacturing: rapid response to changing requirements; small lot machining; reduction in both time and cost of the product realization process; and integration within a heterogeneous, wide-area networked enterprise. Features of the resulting software-controlled manufacturing environment are: (1) Easy plug-and-play of manufacturing devices. (2) Support for both automated and manual operations. (3) Information flow both into and out of manufacturing devices. (4) Dynamic task sequencer. Each of the heterogeneous physical objects (lathe, milling machine, robot arm, etc.) has a corresponding software object that supports a common IDL interface called IDevice. This interface provides operations for material processing, material movement, status monitoring, and other administrative tasks. CORBA objects allow for the encapsulation of a machine tool, its controller, and the network interface to the controller. Both manual and automated operations are supported by the software system. If an IDevice object receives a request for a non-automated operation, it uses an associated Console object to affect the operation by communications with a human machinist. A design goal of the Console object for a machine is to provide an information-intensive environment for the machinist, rather than just the transmittal of instructions to be carried out. In addition to the flow of information into manufacturing devices (e.g., control and NC code), the software architecture supports the easy extraction of data (e.g., sensor data or inspection reports) back out of the machine and into the broader information processing environment The task sequencer object dynamically locates devices, accepts jobs, and dispatches tasks in the manufacturing cell. A job script captures setup operations, material movement, and processing.
Date: August 1, 1996
Creator: Pancerella, C.M.; Whiteside, R.A. & Klevgard, P.A.

Corbit reference manual

Description: Corbit is a general-purpose, command-line program to implement orbit correction for the Advanced Photon Source. Its main purpose is to correct the orbit using a file containing the inverse of a response matrix and the names of the monitors and correctors. It will also: Calculate the response matrix from lattice data; calculate the singular value decomposition of the response matrix; remove singular values from the singular value decomposition; calculate the inverse from the singular value decomposition; use only a subset of the monitors or the correctors; preview the corrected orbit; match a desired orbit; calibrate the response matrix from excitation curve data for the correctors; apply an overall calibration to the response matrix; and compensate for the value of B*Rho.
Date: September 1, 1995
Creator: Evans, K. Jr.

Core Analysis for the Development and Constraint of Physical Models of Geothermal Reservoirs

Description: Effective reservoir exploration, characterization, and engineering require a fundamental understanding of the geophysical properties of reservoir rocks and fracture systems. Even in the best of circumstances, spatial variability in porosity, fracture density, salinity, saturation, tectonic stress, fluid pressures, and lithology can all potentially produce and/or contribute to geophysical anomalies. As a result, serious uniqueness problems frequently occur when interpreting assumptions based on a knowledge base founded in validated rock physics models of reservoir material.
Date: December 14, 2003
Creator: Boitnott, Greg N.


Description: OAK-B135 Recent results from DIII-D address critical internal transport barrier (ITB) research issues relating to sustainability, impurity accumulation and ITB control, and have also demonstrated successful application of general profile control tools. In addition, substantial progress has been made in understanding the physics of the Quiescent Double Barrier (QDB) regime, increasing the demonstrating operating space for the regime and improving performance. Highlights include: (1) a clear demonstration of q-profile modification using electron cyclotron current drive (ECCD); (2) successful use of localized profile control using electron cyclotron heating (ECH) or ECCD to reduce central high-Z impurity accumulation associated with density peaking; (3) theory-based modeling codes are now being used to design experiments; (4) the operating space for Quiescent H-mode (QH-mode) has been substantially broadened, in particular higher density operation has been achieved; (5) absolute ({beta} 3.8%, neutron rate S{sub n} {le} 5.5 x 10{sup 15} s{sup -1}) and relative ({beta}{sub N}H{sub 89} = 7 for 10 {tau}{sub E}) performance has been increased; (6) with regard to sustainment, QDB plasmas have been run for 3.8 s or 26 {tau}{sub E}. These results emphasize that it is possible to produce sustained high quality H-mode performance with an edge localized mode (ELM)-free edge, directly addressing a major issue in fusion research, of how to ameliorate or eliminate ELM induced pulsed divertor particle and heat loads.
Date: March 1, 2003

Core and Refueling Design Studies for the Advanced High Temperature Reactor

Description: The Advanced High Temperature Reactor (AHTR) is a design concept for a central generating station type [3400 MW(t)] fluoride-salt-cooled high-temperature reactor (FHR). The overall goal of the AHTR development program is to demonstrate the technical feasibility of FHRs as low-cost, large-size power producers while maintaining full passive safety. This report presents the current status of ongoing design studies of the core, in-vessel structures, and refueling options for the AHTR. The AHTR design remains at the notional level of maturity as important material, structural, neutronic, and hydraulic issues remain to be addressed. The present design space exploration, however, indicates that reasonable options exist for the AHTR core, primary heat transport path, and fuel cycle provided that materials and systems technologies develop as anticipated. An illustration of the current AHTR core, reactor vessel, and nearby structures is shown in Fig. ES1. The AHTR core design concept is based upon 252 hexagonal, plate fuel assemblies configured to form a roughly cylindrical core. The core has a fueled height of 5.5 m with 25 cm of reflector above and below the core. The fuel assembly hexagons are {approx}45 cm across the flats. Each fuel assembly contains 18 plates that are 23.9 cm wide and 2.55 cm thick. The reactor vessel has an exterior diameter of 10.48 m and a height of 17.7 m. A row of replaceable graphite reflector prismatic blocks surrounds the core radially. A more complete reactor configuration description is provided in Section 2 of this report. The AHTR core design space exploration was performed under a set of constraints. Only low enrichment (<20%) uranium fuel was considered. The coated particle fuel and matrix materials were derived from those being developed and demonstrated under the Department of Energy Office of Nuclear Energy (DOE-NE) advanced gas reactor program. The coated particle volumetric packing ...
Date: September 1, 2011
Creator: Holcomb, David Eugene; Ilas, Dan; Varma, Venugopal Koikal; Cisneros, Anselmo T; Kelly, Ryan P & Gehin, Jess C

Core and shielding analysis of the SCM-100.

Description: It is widely accepted that an intense neutron source can be produced in a suitable target by spallation neutrons generated by a high-current high-energy proton beam. Typical beam energy for such an accelerator is 400 to 2000 MeV. A conventional critical reactor can readily be replaced by a ''sub-critical reactor'' driven by this source. A 5 MW proton beam at 600 MeV can drive a sub-critical reactor to 100 MWt. The accelerator and the associated plant support equipment at these design specifications are complex systems, but they are well within recent technology. The purpose of this study was to examine core design and shielding design issues for a 100 MWt sodium-cooled fast-spectrum Sub-Critical Multiplier (SCM-100) based on LMFBR technology, but driven by an intense neutron source created by spallation reactions. SCM-100 is a component of the Accelerator Driven Test Facility. In this report we provide an overview of the SCM-100 concept. Two designs were investigated: (1) a vertical entry for the beam on the axial centerline; and (2) an inclined entry design where the core is ''C'' shaped and the beam enters the side of the target at an angle of 32 degrees. A brief overview of relevant shielding design data from EBR-II is also provided. The key result of this report is that the inclined entry design cannot achieve design objectives for radial power peaking. Consequently it cannot achieve design objectives for peak neutron flux. Axial power peaking factors are controlled by the axial fuel height and the axial reflector properties. These dimensions and compositions are very similar in SCM-100 to those of EBR-II. EBR-II had an axial power peaking factor of 1.093, and a radial power peaking factor of about 1.46. The radial power peaking of SCM-100 with the inclined entry is too extreme at 2.15, and cannot ...
Date: February 11, 2002
Creator: Olson, A. P.