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in subjects: "Engineers"

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How training and experience affect the benefits of autonomy in a dirty-bomb experiment

A dirty-bomb experiment conducted at the INL is used to evaluate the effectiveness and suitability of three different modes of robot control. The experiment uses three distinct user groups to understand how participants’ background and training affect the way in which they use and benefit from autonomy. The results show that the target mode, which involves automated mapping and plume tracing together with a point and click tasking tool, provides the best performance for each group. This is true… more

Date: March 1, 2008

Creator: Bruemmer, David J.; Nielsen, Curtis W. & Gertman, David I.

Item Type: Article

Partner: UNT Libraries Government Documents Department

open access

Analysis of stress sensitivity and its influence on oil productionfrom tight reservoirs

This paper presents a study of the relationship betweenpermeability and effective stress in tight petroleum reservoirformations. Specifically, a quantitative method is developed to describethe correlation between permeability and effective stress, a method basedon the original in situ reservoir effective stress rather than ondecreased effective stress during development. The experimental resultsshow that the relationship between intrinsic permeability and effectivestress in reservoirs in genera… more

Date: August 28, 2007

Creator: Lei, Qun; Xiong, Wei; Yuan, Cui & Wu, Yu-Shu

Item Type: Article

Partner: UNT Libraries Government Documents Department

open access

Vortex Characterization for Engineering Applications

Realistic engineering simulation data often have features that are not optimally resolved due to practical limitations on mesh resolution. To be useful to application engineers, vortex characterization techniques must be sufficiently robust to handle realistic data with complex vortex topologies. In this paper, we present enhancements to the vortex topology identification component of an existing vortex characterization algorithm. The modified techniques are demonstrated by application to three… more

Date: January 30, 2008

Creator: Jankun-Kelly, M; Thompson, D S; Jiang, M; Shannahan, B & Machiraju, R

Item Type: Article

Partner: UNT Libraries Government Documents Department

open access

Nanocrystal Bioassembly: Asymmetry, Proximity, and Enzymatic Manipulation

Research at the interface between biomolecules and inorganic nanocrystals has resulted in a great number of new discoveries. In part this arises from the synergistic duality of the system: biomolecules may act as self-assembly agents for organizing inorganic nanocrystals into functional materials; alternatively, nanocrystals may act as microscopic or spectroscopic labels for elucidating the behavior of complex biomolecular systems. However, success in either of these functions relies heavily up… more

Date: May 1, 2008

Creator: Claridge, Shelley A

Item Type: Thesis or Dissertation

Partner: UNT Libraries Government Documents Department

open access

TOUGH Short Course for Scientists and Engineers

The TOUGH family of codes is a suite of computer programs for the simulation of multiphase fluid and heat flows in porous and fractured media with applications to geothermal reservoir engineering, nuclear waste disposal in geologic formations, geologic carbon sequestration, gas hydrate research, vadose zone hydrology, environmental remediation, oil and gas reservoir engineering, and other mass transport and energy transfer problems in complex geologic settings. TOUGH has been developed in the E… more

Date: August 1, 2006

Creator: Kowalsky, Michael B. & Finsterle, Stefan

Item Type: Report

Partner: UNT Libraries Government Documents Department

open access

Supporting Multiple Cognitive Processing Styles Using Tailored Support Systems

According to theories of cognitive processing style or cognitive control mode, human performance is more effective when an individual’s cognitive state (e.g., intuition/scramble vs. deliberate/strategic) matches his/her ecological constraints or context (e.g., utilize intuition to strive for a "good-enough" response instead of deliberating for the "best" response under high time pressure). Ill-mapping between cognitive state and ecological constraints are believed to lead to degraded task perfo… more

Date: August 1, 2007

Creator: Tran, Tuan Q.; Feigh, Karen M. & Pritchett, Amy R.

Item Type: Article

Partner: UNT Libraries Government Documents Department

open access

Mechanical considerations and design skills.

The purpose of the report is to provide experienced-based insights into design processes that will benefit designers beginning their employment at Sandia National Laboratories or those assuming new design responsibilities. The main purpose of this document is to provide engineers with the practical aspects of system design. The material discussed here may not be new to some readers, but some of it was to me. Transforming an idea to a design to solve a problem is a skill, and skills are similar … more

Date: March 1, 2008

Creator: Alvis, Robert L.

Item Type: Report

Partner: UNT Libraries Government Documents Department

open access

Benchmarking, Research, Development, and Support for ORNL Automated Image and Signature Retrieval (AIR/ASR) Technologies

This report describes the results of a Cooperative Research and Development Agreement (CRADA) with Applied Materials, Inc. (AMAT) of Santa Clara, California. This project encompassed the continued development and integration of the ORNL Automated Image Retrieval (AIR) technology, and an extension of the technology denoted Automated Signature Retrieval (ASR), and other related technologies with the Defect Source Identification (DSI) software system that was under development by AMAT at the time … more

Date: June 1, 2004

Creator: Tobin, K.W.

Item Type: Report

Partner: UNT Libraries Government Documents Department

open access

Investigation of the Richtmyer-Meshkov instability

The present program is centered on the experimental study of shock-induced interfacial fluid instabilities. Both 2-D (near-sinusoids) and 3-D (spheres) initial conditions are studied in a large, vertical square shock tube facility. The evolution of the interface shape, its distortion, the modal growth rates and the mixing of the fluids at the interface are all objectives of the investigation. In parallel to the experiments, calculations are performed using the Raptor code, on platforms made ava… more

Date: December 22, 2008

Creator: Bonazza, Riccardo; Anderson, Mark & Oakley, Jason

Item Type: Report

Partner: UNT Libraries Government Documents Department

open access

Rick Sawicki Interview for Dartmouth Engineer Magazine

In this issue Rick Sawicki answers the question--What is your role as chief engineer on this project? His reply is--There are two major roles for the Chief Engineer position: (1) to assure that the engineering that is being performed for the project is safely completed in full compliance with all federal, state and Lawrence Livermore National Laboratory policies, standards and procedures and (2) as needed, address special engineering issues as they arise assuring that their resolution is comple… more

Date: May 21, 2008

Creator: Sawicki, R

Item Type: Article

Partner: UNT Libraries Government Documents Department

open access

Vacuum Systems Consensus Guideline for Department of Energy Accelerator Laboratories

Vacuum vessels, including evacuated chambers and insulated jacketed dewars, can pose a potential hazard to equipment and personnel from collapse, rupture due to back-fill pressurization, or implosion due to vacuum window failure. It is therefore important to design and operate vacuum systems in accordance with applicable and sound engineering principles. 10 CFR 851 defines requirements for pressure systems that also apply to vacuum vessels subject to back-fill pressurization. Such vacuum vessel… more

Date: September 9, 2008

Creator: Casey,R.; Haas, E.; Hseuh, H. C.; Kane, S.; Lessard, E.; Sharma, S. et al.

Item Type: Report

Partner: UNT Libraries Government Documents Department

open access

Ge Interface Engineering with Ozone-oxidation for Low Interface State Density

Passivation of Ge has been a critical issue for Ge MOS applications in future technology nodes. In this letter, we introduce ozone-oxidation to engineer Ge/insulator interface. Interface states (D{sub it}) values across the bandgap and close to conduction bandedge were extracted using conductance technique at low temperatures. D{sub it} dependency on growth conditions was studied. Minimum D{sub it} of 3 x 10{sup 11} cm{sup -2} V{sup -1} was demonstrated. Physical quality of the interface was in… more

Date: June 2, 2008

Creator: Kuzum, Duygu; Krishnamohan, T.; Pethe, Abhijit J.; Okyay, Ali K.; Oshima, Yasuhiro; Sun, Yun et al.

Item Type: Article

Partner: UNT Libraries Government Documents Department

open access

Applying SE Methods Achieves Project Success to Evaluate Hammer and Fixed Cutter Grinders Using Multiple Varieties and Moistures of Biomass Feedstock for Ethanol Production

Applying basic systems engineering (SE) tools to the mission analysis phases of a 2.5-million dollar biomass pre-processing project for the U.S. Department of Energy directly assisted the project principal investigator understand the complexity and identify the gaps of a moving-target project and capture the undefined technical/functional requirements and deliverables from the project team and industrial partners. A creative application of various SE tools by non-aerospace systems engineers dev… more

Date: June 1, 2008

Creator: Zirker, Larry R.; Christopher T. Wright, PhD & Hamelin, R. Douglas

Item Type: Article

Partner: UNT Libraries Government Documents Department

open access

RH-TRU Waste Content Codes (RH-TRUCON)

The Remote-Handled Transuranic (RH-TRU) Content Codes (RH-TRUCON) document describes the inventory of RH-TRU waste within the transportation parameters specified by the Remote-Handled Transuranic Waste Authorized Methods for Payload Control (RH-TRAMPAC).1 The RH-TRAMPAC defines the allowable payload for the RH-TRU 72-B. This document is a catalog of RH-TRU 72-B authorized contents by site. A content code is defined by the following components: • A two-letter site abbreviation that designates th… more

Date: May 30, 2007

Creator: Solutions, Washington TRU

Item Type: Report

Partner: UNT Libraries Government Documents Department

open access

Certifying Industrial Energy Efficiency Performance: AligningManagement, Measurement, and Practice to Create Market Value

More than fifteen years after the launch of programs in theU.K. and U.S., industry still offers one of the largest opportunities forenergy savings worldwide. The International Energy Agency (IEA) estimatesthe savings potential from cost-optimization of industrial motor-drivensystems alone at 7 percent of global electricity use. The U.S. Departmentof Energy (USDOE) Industrial Technologies Program estimates 7 percentsavings potential in total US industrial energy use through theapplication of pro… more

Date: July 1, 2007

Creator: McKane, Aimee; Scheihing, Paul & Williams, Robert

Item Type: Article

Partner: UNT Libraries Government Documents Department

open access

Real Time RF Simulator (RTS) and control

The multi-cavity RTS allows LLRF algorithm development and lab testing prior to commissioning with real cavities and cryomodules. The RTS is a valuable tool since it models the functions, errors and disturbances of real RF systems. The advantage of a RTS over an off-line simulator is that it can be implemented on the actual LLRF hardware, on the same FPGA and processor, and run at the same speed of the LLRF control loop. Additionally the RTS can be shared by collaborators who do not have access… more

Date: October 1, 2008

Creator: Cancelo, G.; Armiento, C.; Treptow, K.; Vignoni, A. & Zmuda, T.

Item Type: Article

Partner: UNT Libraries Government Documents Department

open access

Monthly report of activities: APRIL 1, 1969

This is the first of a series of monthly reports summarizing the status of the work of the National Accelerator Laboratory. This first report will cover developments since the publication of the Design Report in January. Authorization hearings were held before the Joint Committee on Atomic Energy on February 21, 1968. Dr. Wilson described the plans and designs of the Laboratory. The present plan of the Laboratory is that the Village of Weston will be utilized for office, laboratory, and shop sp… more

Date: April 1, 1968

Item Type: Report

Partner: UNT Libraries Government Documents Department

open access

RH-TRU Waste Content Codes (RH-TRUCON)

Date: August 1, 2007

Creator: Westinghouse TRU Solutions LLC

Item Type: Report

Partner: UNT Libraries Government Documents Department

open access

A Virtual Engineering Framework for Simulating Advanced Power System

In this report is described the work effort performed to provide NETL with VE-Suite based Virtual Engineering software and enhanced equipment models to support NETL's Advanced Process Engineering Co-simulation (APECS) framework for advanced power generation systems. Enhancements to the software framework facilitated an important link between APECS and the virtual engineering capabilities provided by VE-Suite (e.g., equipment and process visualization, information assimilation). Model enhancemen… more

Date: June 18, 2008

Creator: Bockelie, Mike; Swensen, Dave; Denison, Martin & Borodai, Stanislav

Item Type: Report

Partner: UNT Libraries Government Documents Department

open access

The Army Corps of Engineers' Nationwide Permits Program: Issues and Regulatory Developments

Permits issued by the U.S. Army Corps of Engineers authorize various types of development projects in wetlands and other waters of the United States. The Corps' regulatory process involves two types of permits: general permits for actions for private landowners that will likely have a minor effect on wetlands, and individual permits for more significant actions. Interest groups have a number of specific criticisms of the permits. For some time, there has been a stalemate in Congress over legisl… more

Date: August 21, 2008

Creator: Copeland, Claudia

Item Type: Report

Partner: UNT Libraries Government Documents Department

open access

Improvements in Measuring Sorption-Induced Strain and Permeability in Coal

Total worldwide CBM in-place reserves estimates are between 3500 Tcf and 9500 Tcf. Unminable coal beds have been recommended as good CO2 sequestration sites as the world prepares to sequester large amounts of greenhouse gases. In the U.S., these coal seams have the capacity to adsorb and sequester roughly 50 years of CO2 emissions from all the U.S. coal-fired power plants at today’s output rates. The amount and type of gas ad-sorbed in coal has a strong impact on the permeability of the coal se… more

Date: October 1, 2008

Creator: Robertson, Eric P.

Item Type: Article

Partner: UNT Libraries Government Documents Department

open access

Robotic Surveying

ZAPATA ENGINEERING challenged our engineers and scientists, which included robotics expertise from Carnegie Mellon University, to design a solution to meet our client's requirements for rapid digital geophysical and radiological data collection of a munitions test range with no down-range personnel. A prime concern of the project was to minimize exposure of personnel to unexploded ordnance and radiation. The field season was limited by extreme heat, cold and snow. Geographical Information Syste… more

Date: March 1, 2007

Creator: Cantor-McKinney, Suzy & Kruzic, Michael

Item Type: Article

Partner: UNT Libraries Government Documents Department

open access

Exact solutions in a model of vertical gas migration

This work is motivated by the growing interest in injectingcarbon dioxide into deep geological formations as a means of avoidingatmospheric emissions of carbon dioxide and consequent global warming.One of the key questions regarding the feasibility of this technology isthe potential rate of leakage out of the primary storage formation. Weseek exact solutions in a model of gas flow driven by a combination ofbuoyancy, viscous and capillary forces. Different combinations of theseforces and charact… more

Date: June 27, 2006

Creator: Silin, Dmitriy B.; Patzek, Tad W. & Benson, Sally M.

Item Type: Article

Partner: UNT Libraries Government Documents Department

open access

Carbon Dioxide Selective Supported Ionic Liquid Membranes: The Effect of Contaminants

The integrated gasification combined cycle (IGCC) is widely viewed as a promising technology for the large scale production of energy in a carbon constrained world. These cycles, which include gasification, contaminant removal, water-gas shift, CO2 capture and compression, and combustion of the reduced-carbon fuel gas in a turbine, often have significant efficiency advantages over conventional combustion technologies. A CO2 selective membrane capable of maintaining performance at conditions app… more

Date: April 1, 2008

Creator: Luebke, D. R.; Ilconich, J. B.; Myers, C. R. & Pennline, H. W.

Item Type: Article

Partner: UNT Libraries Government Documents Department